Description:TECHNICAL FIELD OF THE INVENTION
The present invention relates to pneumatic Sample Transmission System to enhancement of productivity Of Steel Melting Shop-III, and more particularly, to the capsule for Pneumatic Sample Transmission System to enhancement of productivity Of Steel Melting Shop-III.

BACKGROUND OF THE INVENTION
Steel melting shop-3 is having one Express laboratory for chemical analysis of the various sample received from the Convertor ,Secondary Refining Unit And Caster to facilitate appropriate decision making for the operation to finish desired chemistry of steel according to different grade being produced. During the steel making process for every heat at least two to three times samples sent for the analysis through pneumatic sample conveying system to the express lab. Sample analysis is displayed through the online computer system for the operation personnel for taking any corrective measures if required depending on the steel grade being made.
Timely feedback of the sample analysis is of vital importance and affects the quality, duration of the heat to be tapped.
Sample taken from bath is kept in a cylindrical steel capsule and pushed by the pressurized compressed air at 6 kg / cm2 to the Lab through the pipelines of sample conveying system installed at 'Ladle Furnace 1 and RH . It takes around 45 to 60 sec to reach at the lab end of the system and capsule has to travel around 2.3 KM from LF1 & 2.5 km from RH respectively.
The existing capsule often got stucked in pipe line of 2.5 km long at various bends provided at different elevations, it is difficult to locate and time taken for normalize the system hence delay in sample analysis is given adversely affect the SMS 3 production.
The present process delay in steel refining due to delay in sample analysis.
sample taken from liquid steel at various time intervals for analysis of chemistry of steel. This sample is then send to the laboratory for analysis, pneumatic sample conveying system is used for conveying of sample.
Frequent sample capsule stucking problem observed which delays in sample analysis eventually delays to catch the caster heat sequence which ultimately resulting in production loss of SMS3.

OBJECT OF THE INVENTION
It is an object of the present invention to overcome the shortcomings of the prior art.
It is an object of the present invention to reduce the delay in sample analysis of liquid steel which arises due to delay in arriving of sample. The sample arriving delay contains following delays:
1. Delay due to stucking of sample capsule in conveying pipe line.
2. Delay due to unabling of opening of capsule cap.

SUMMARY OF THE INVENTION
The following disclosure presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the present invention. It is not intended to identify the key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concept of the invention in a simplified form as a prelude to a more detailed description of the invention presented later.

In one aspect of the present invention there is provided a method of transporting steel capsule in Pneumatic Sample Transmission System; said method comprising;
keeping the heat sample in a cylindrical steel capsule;
pushing said cylindrical steel capsule to the Lab through the pipelines of a conveying system;
wherein the body and cover of said capsule is connected in a zig-zag locking arrangement.

In another aspect of the present invention there is provided a system of transporting steel capsule in Pneumatic Sample Transmission System; said system comprising;
a convertor;
a secondary Refining Unit;
a caster; and
a sample conveying system configured to push cylindrical steel capsule to the Lab;
wherein the body and cover of said capsule is connected in a zig-zag locking arrangement.

Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The above and other aspects, features and advantages of the embodiments of the present disclosure will be more apparent in the following description taken in conjunction with the accompanying drawings, in which:

Figure 1 is a Pneumatic sample transmission system according to the invention
Figure 2 is an old Sample Capsule according to the invention
Figure 3 is a according to the invention
Figure 3 is a heat sample taken from Ladle furnace during steel processing according to the invention
Fig. 4 is a Capsule transmission by 2.5 km pipe line according to the invention
Fig. 5 is a Conveying Line at 10, 30 & 36 meters elevation according to the invention
Fig. 6 is a SMS-3 EXPRESS LABORATORY according to the invention
Fig, 7 is a CAPSULE RECEIVED AT LAB END BUT UNABLE TO OPEN THE CAP DUE TO ITS BRASS SQUARE THREAD DAMAGE according to the invention
Fig. 8 is a CAPSULE GETTING STUCK IN PIPE LINE AND NOT RECEIVED AT LAB END according to the invention
Fig 9 is a Capsule Receiving Area Lab side according to the invention
Fig. 10 is a DELAY IN REMOVING THE STUCKED CAPSULE according to the invention
Fig. 11 is a CAPSULE CAP OPEN & STUCK IN PIPE LINE according to the invention
Fig. 12 is a CAPSULE STUCK PLACE NOT IDENTIFIED according to the invention
Fig. 13 is a CONVERTOR Lab area according to the invention
Fig. 14 is a Inspection chamber located at various interval throughout the line according to the invention
Fig. 15 is a Pic showing passing of ball for locating stucked capsule according to the invention
Fig. 16 is a Above pics shows location of one of the stucked capsule body at I row column at an elevation of 36 meter level
Fig. 17 is a location of one of the stucked capsule cap at Torpedo bay (DE) elevation of 10 meter level according to the invention
Fig 18 is a Stucked Capsule is being removed by poking according to the invention
Fig. 19 is a EXISTING SAMPLE CAPSULE according to the invention
Fig 20 is a Making a zig-zag locking arrangement sample capsule with the help of spare available cutting pipe and its weight is less than existing capsule according to the invention
Fig. 21 is a modify capsule according to the invention
Fig 22 is a Existing Capsule with cap according to the invention
Fig. 23 is a Modified Capsule with cap according to the invention
Fig, 24 is a Before modification heat sample send through capsule as shown according to the invention
Fig, 25 is a AFTER MODIFICATION heat sample send through as shown according to the invention
Fig 26 is a Ladle Furnace according to the invention
Fig 27 is a Bloom and Billet Caster according to the invention
Fig 28 is a Modified sample capsule according to the invention

Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may not have been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure. Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

DETAILED DESCRIPTION OF THE PRESENT INVENTION
The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding, but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments belong. Further, the meaning of terms or words used in the specification and the claims should not be limited to the literal or commonly employed sense but should be construed in accordance with the spirit of the disclosure to most properly describe the present disclosure.

The terminology used herein is for the purpose of describing particular various embodiments only and is not intended to be limiting of various embodiments. As used herein, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising" used herein specify the presence of stated features, integers, steps, operations, members, components, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, members, components, and/or groups thereof.

The present disclosure will now be described more fully with reference to the accompanying drawings, in which various embodiments of the present disclosure are shown.

In one embodiment present invention describes a method of transporting steel capsule in Pneumatic Sample Transmission System; said method comprising Keeping the heat sample in a cylindrical steel capsule; pushing said cylindrical steel capsule to the Lab through the pipelines of a conveying system; wherein the body and cover of said capsule is connected in a zig-zag locking arrangement.

According to one implementation of the present invention, Hot metal sample taking from ladle kept in cylindrical capsule (Body and cover) & pushed in pneumatic conveying line through compressed air at 6 kg/cm2 to send lollypop sample in chemical laboratory from LF#1& LF#2. It takes around 45 sec to 60 sec to reach at the lab end of the system and capsule has to travel around 2.3KM from LF1 & 2.5 km from LF 2 respectively. Due to long distance and multiple number of bends located at different elevations in the line there is a tendency of capsule to rotate which resulted in opening of cap of capsule and it finally leads to stacking of capsule in sample conveying line. Also constant usage of capsule leads to damage of thread of its cap which make it unable to open for sample removing for analysis.

According to one implementation of the present invention, the Location and removal of stucked capsule from the sample conveying line which is 2.5 km in length is a very hard and tedious job. In order to locate the exact location, inspection chambers installed at various interval are open one by open and then the tennis ball from one side (either from Lab side or from LF side) is being passed to identify the exact location of stucked capsule. As this line is 2.5 Kms long having so many bends at various levels where there is no proper approach, thereby making it extremely unsafe for the people involved in this job. Insufficient illumination at various location only exaggerates the problem. Once the location is identified then from that inspection chamber either steel wire rope or lancing pipe is being inserted through this stucked capsule is being pushed manually to the nearest Inspection chamber.

According to one implementation of the present invention, in house modification of sample capsule is done with the help of used pipes and used conveyor belt. The locking system of capsule body and cover is also modified with zig-zag locking arrangement. The zig-zag locking arrangement easy to opening and closing of capsule and eliminated the possibility of stucking the capsule cap and body in conveying pipe line. After problem analysis emerge with the idea to modify the pneumatic sample conveyor unit system capsule with in house resources like scrape pipe, washer, bolt etc, both the end of capsule bolted with rubber buffer. this rubber buffer frequently damage due to long running of capsule in the supply of rubber buffer and new capsule is affected which resulted to sample analysis delay .so that making rubber buffer with used conveyor belt as shown in fig. Capsule cap and body fixed with three bolts during transmission this bolts opened in pipe line and stucked the capsule. it is modified with single big size ms washer and bolt locked with welding which resulted to increase the life of buffer and solved the bolt opening problem in pipe line.

In an another embodiment the present invention describes to a system of transporting steel capsule in Pneumatic Sample Transmission System; said system comprising; a convertor; a secondary Refining Unit; a caster; and a sample conveying system configured to push cylindrical steel capsule to the Lab; wherein the body and cover of said capsule is connected in a zig-zag locking arrangement.

According to another implementation of present invention, the new generated ideas transmission capsule developed and tested but it will not effectively work so that we further developed new capsule. Develop a new capsule which is easy to operate and which do not open during travelling in conveying line. the length of the capsule body as well as cap of capsule is increased to avoid the turning of capsule in the bend area and pipe line. This design will eliminate the turning of cap as well as body of capsule even if it gets open during transmission and it can be easily taken out from line with the help of air pressure.

According to one implementation of present invention, the modified sample capsule tested in conveyor system from last two years and found that capsule cap easy to remove in lab end for the heat sample chemical analysis and the problem of capsule stucked in pipe line of 2.5 km is eliminated. if capsule stucked in pipe line easy to release with air pressure, this modification help us to fast chemical analysis of heat which resulting into enhance the production and productivity of SMS-3.

According to one implementation of present invention, the modified capsule found satisfactory in multiple trials, team members decided to produce more modified capsules. Team member decided to fabricate the buffer rubber in-house from used conveyor belt with single bigger diameter washer in place of multiple smaller. After modification of capsule, sample analysis of heat put in to the capsule and send to lab from Ladle furnace -2 .it will reach to lab side successfully within 45 seconds this trail taken in no of times and handed over to operation by explaining the all resistance, during the modification we are minimize the weight of capsule from 1000gm to 800gm so that easy to travel in pneumatic sample conveyor pipe line with air pressure. Both side of capsule rubber buffer bolted with single MS washer and nut locked with welding that is help to smooth operation of system.

According to one implementation of present invention, the COST OF IMPLEMENTATION OF THIS SUGGESTION

Sl.
No. Material used Quantity (No.) Cost in Rs.
1 Cut pipe Ø 50mm 1 In house
2 Cut pipe Ø 40mm 1 In house
3 Rubber buffer 2 In house
4 Bolt and washer 10mm 2 In house

BENEFITS (TANGIBLE & INTANGIBLE):

TANGIBLE:-
1. Annual requirement of capsule is reduced to greater extent.
2. System availability increased resulted in increase in production.
3. Timely availability of sample results in maintains the desired quality of steel.

INTANGIBLE:-
1. Facilitates quality steel making
2. Better & Safe working system
3. Reduced down time of equipment
4. Optimum resource utilization
5. Reduces the noise pollution in the shop floor
6. Process safety increased
7. Man-hour saved
8. System availability increased

SAFETY: heat holding due to sample analysis is minimize so that again Arcing is not required and saved human body with harm full gases and dust. ladle life increased due to no leakage. Easy to remove stucked capsule from line with air pressure.
ENVIRONMENT: Modify capsule help us with air pollution and heat radiation causes bad effect on working environment and housekeeping. With the introduction of this mechanism helped in keeping pollution and housekeeping under control.
WORK INTENSITY: removing of stucked in pipe line is laborious and tedious. Introduction of this modify capsule has helped in avoiding the additional job and process pressure.
MORE AVAILABILITY OF Ladle Furnace: Smooth and uninterrupted operation of LF1 and LF2 has increased the availability of cranes, furnace, etc. with the introduction of this modified sample capsule.
HIGH MORALE OF MAN POWER: Reducing the capsule stucked problem has sky rocketed the morale and tempo of working personnel.

According to one implementation of present invention, after addition and arcing process temperature and sample taken from heat this sample send to laboratory for chemical analysis of heat. In Sms3 there is a pneumatic sample conveyor system .in this system sample of heat kept in capsule and travels through 2.5 km pipe line by air pressure and send to express laboratory. For this transmission of capsule less than one minute taken to reach express laboratory and after fast analysis of sample production reach to target. If any problems comes in sample transmission system resultant to delay in production or effected the whole production cycle of SMS 3 and BF 8. Location and removal of stucked capsule from the sample conveying line which is 2.5 kms in length is a very hard and tedious job. In order to locate the exact location, inspection chambers installed at various interval are open one by open and then the tennis ball from one side (either from Lab side or from LF side) is being passed to identify the exact location of stucked capsule. As this line is 2.5 Kms long having so many bends at various levels where there is no proper approach, thereby making it extremely unsafe for the people involved in this job. Insufficient illumination at various location only exaggerates the problem. Once the location is identified then from that inspection chamber either steel wire rope or lancing pipe is being inserted through this stucked capsule is being pushed manually to the nearest Inspection chamber. For this rectification of job some times more than 48 hrs required to locate the thestucked capsule in between time sample manually send to other sample system unit, this will take time and delay in heat chemical analysis or some time make confusion in analysis in heat sequence.

Usefulness of the Invention:
The pneumatic sample conveyor system capsule operation mechanism is a very user friendly, easy to operate and maintain, which can be used in any steel industries and as well as in chemical industries and various other industries for the similar type of application

Industrial Applicability:
 Metallurgical industry (Aluminium) - Transport of hot samples, powders to the laboratory in large plants.
 Cement plants- Transfer of cement samples to laboratories.
 Pharmaceuticals- transfer of sterile samples to laboratories.
 Hospital- Transfer of medial/pathology samples, emergency samples, reports in large hospitals.

 Retail- Transfer of case from remote collection points to secured centralized locations for processing.
 Warehouses- Sending paperwork (delivery dockets, receipts) to the office from stores for billing.
 Airport maintenance/ workshop- Spare parts transfer from stores to shop.

There is no alternate method to send the Heat sample to the lab except by manually . During that duration heat will remain hold in secondary refining unit and effected the SMS-3 production cycle. After problem analysis group has emerge with the idea to modify the pneumatic sample. conveyor system capsule with in house resources like scrape pipe, washer ,bolt etc , both the end of capsule bolted with rubber buffer .this rubber buffer frequently damage due to long running of capsule ,it will change every day .in this pedyamic year or due to lock down the supply of rubber buffer and new capsule is affected which resulted to sample analysis delay . the team members are making rubber buffer with used conveyor belt as shown in fig .and capsule cap and body fixed with three nos of bolts ,which is during transmission this bolts opened and stucked the capsule . the group members modify it with single big size ms washer and bolt locked with welding so that rubber buffer strengthen and increase the life of buffer.

Develop a new capsule which is easy to operate and which do not open during travelling in conveying line. the length of body as well as cap of capsule is increased to avoid the turning of capsule in the bend area and pipe line . this design will eliminate the turning of cap as well as body of capsule even if it gets open during transmission and it can be easily taken out from line with the help of air pressure.

Data After Developing new Capsule
S.
No. Description Unit Heats Remarks
Before After
1 Heat Diversion Nos. 28 2 Heat diversion due to other reason
2 Production Delay Nos. 13 0
3 Ladle preparation Delay Nos. 10 0
4 Capsule Purchase Nos. 500 0 In house Developed
5 Buffer rubber purchase Nos. 1000 0 In house Developed

, Claims:
1. A method of transporting steel capsule in Pneumatic Sample Transmission System; said method comprising;
Keeping the heat sample in a cylindrical steel capsule;
pushing said cylindrical steel capsule to the Lab through the pipelines of a conveying system;
wherein the body and cover of said capsule is connected in a zig-zag locking arrangement.

2. The method as claimed in claim 1, wherein said cylindrical steel capsule is pushed by pressurized compressed air at 6 kg / cm2.

3. The method as claimed in claim 1, wherein the weight of capsule is upto 800 gm.

4. A system of transporting steel capsule in Pneumatic Sample Transmission System; said system comprising;
a convertor;
a secondary Refining Unit;
a caster; and
a sample conveying system configured to push cylindrical steel capsule to the Lab;
wherein the body and cover of said capsule is connected in a zig-zag locking arrangement.

5. The system as claimed in claim 1, wherein said cylindrical steel capsule is pushed by pressurized compressed air at 6 kg / cm2.

6. The system as claimed in claim 1, wherein the weight of capsule is upto 800 gm.