Sampling conversion device for coal spontaneous combustion temperature programming experiment

Abstract

The utility model discloses a sampling conversion device for a coal spontaneous combustion temperature programming experiment. The sampling conversion device comprises a pagoda joint, a PVC (Polyvinyl Chloride) hose I, a reducing straight joint and a PVC hose II which are connected in sequence, the inner diameter of the first PVC hose is 2 mm, and the outer diameter of the first PVC hose is 4 mm. The second PVC hose is a PVC hose with the inner diameter being 4 mm and the outer diameter being 6 mm. According to the utility model, the gas in the mine gas sampling ball bladder can be efficiently extracted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of simulation coal spontaneous combustion programmed temperature rising experimental device, especially to a kind of sampling conversion device for coal spontaneous combustion programmed temperature rising experiment. BACKGROUND

[0002] In the simulation coal spontaneous combustion programmed temperature rising experimental process, use vertical type tube type coal powder sintering furnace or programmed temperature rising box to heat experimental coal sample, collect gas under different temperature changes and analyze by gas chromatography. According to the design structure of experimental equipment, usually use mine gas sampling ball bladder in the gas outlet of vertical type tube type coal powder sintering furnace or programmed temperature rising box to collect the gas generated by heated coal sample. 50ml of gas in mine gas sampling ball bladder is extracted by 60ml syringe and injected into GC4008A gas chromatograph for analysis. The syringe is 60ml standard port, its outlet length is 1ml, outlet inner diameter is 2mm, outer diameter is 4mm, the inner diameter of ball bladder rubber tube is about 6mm, and the outer diameter is 9mm, which is much larger than the inner diameter of syringe, so that the gas in ball bladder cannot be effectively extracted into syringe. SUMMARY

[0003] In order to overcome the above technical problems, the purpose of the utility model is to provide a kind of sampling conversion device for coal spontaneous combustion programmed temperature rising experiment, which can efficiently extract gas in mine gas sampling ball bladder.

[0004] The technical scheme adopted by the utility model is:

[0005] A kind of sampling conversion device for coal spontaneous combustion programmed temperature rising experiment, including the connection of pagoda joint 4, PVC hose one 3, variable diameter straight connector 2 and PVC hose two 1 in proper order;

[0006] The PVC hose one 3 is PVC hose with inner diameter of 2mm and outer diameter of 4mm.

[0007] The PVC hose two 1 is PVC hose with inner diameter of 4mm and outer diameter of 6mm.

[0008] The pagoda joint 4 is inserted into the rubber tube of mine gas sampling ball bladder with inner diameter of 6mm, and the tail end of the joint is inserted into PVC hose with inner diameter of 2mm and outer diameter of 4mm.

[0009] The variable diameter straight connector 2 is inserted into PVC hose with inner diameter of 2mm and outer diameter of 4mm and PVC hose with inner diameter of 4mm and outer diameter of 6mm at both ends respectively.

[0010] Preferably, the pagoda joint 4 is 8mm pagoda joint.

[0011] Preferably, the variable diameter straight connector 2 is 4mm to 6mm joint.

[0012] The utility model discloses beneficial effect:

[0013] The utility model discloses through different joint, pipe fitting are connected in proper order, and the good air tightness of tight joint between each component can use the syringe to extract the gas in the ball bladder quickly, and the experimental operation is convenient. DRAWINGS

[0014] Figure 1 It is the structure schematic diagram of the utility model. CONCRETE IMPLEMENTING METHOD

[0015] The technical scheme in the embodiment of the utility model will be clearly and completely described in combination with the drawings in the embodiment of the utility model, and apparently, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor belong to the range of the utility model protection.

[0016] As Figure 1 Indicated, a kind of for coal spontaneous combustion program temperature experiment's sampling conversion device, including the connection in proper order of pagoda joint 4, PVC hose one 3, variable diameter straight connector 2 and PVC hose two 1;

[0017] The PVC hose one 3 is the PVC hose with 2mm inner diameter and 4mm outer diameter.

[0018] The PVC hose two 1 is the PVC hose with 4mm inner diameter and 6mm outer diameter.

[0019] The pagoda joint 4 is 8mm pagoda joint.

[0020] The variable diameter straight connector 2 is 4mm variable 6mm connector.

[0021] The pagoda joint 4 is inserted into the rubber tube of 6mm inner diameter mine gas sampling ball bladder, and the tail end of connector is inserted into the PVC hose with 2mm inner diameter and 4mm outer diameter.

[0022] The variable diameter straight connector 2 is inserted into the PVC hose with 2mm inner diameter and 4mm outer diameter and the PVC hose with 4mm inner diameter and 6mm outer diameter respectively.

[0023] Embodiment 1

[0024] As shown in the attached Figure 1 Indicated, in the process of carrying out coal spontaneous combustion program temperature experiment, after using mine gas sampling ball bladder and collecting the gas generated by heated coal sample in the gas outlet of vertical tube type coal powder sintering furnace or program temperature box, using water stop clamp to hold ball bladder rubber tube, the utility model uses, and one end of pagoda joint 4 is inserted into the rubber tube of mine gas collection ball bladder.

[0025] All the gas in the syringe is expelled and a PVC hose with an internal diameter of 4 mm and an external diameter of 6 mm is inserted into one end.

[0026] The water stop clamp on the rubber tube of the mine gas collection bladder is opened.

[0027] The gas in the bladder is extracted using a syringe.

Claims

1. A sampling and conversion device for a coal spontaneous combustion programmed heating experiment, characterized in that, It includes a pagoda connector (4), PVC hose one (3), reducing straight connector (2) and PVC hose two (1) connected in sequence; The PVC hose 1 (3) is a PVC hose with an inner diameter of 2 mm and an outer diameter of 4 mm; The PVC hose 2 (1) is a PVC hose with an inner diameter of 4mm and an outer diameter of 6mm.

2. The sampling and conversion device for a coal spontaneous combustion programmed heating experiment according to claim 1, characterized in that, The pagoda connector (4) is inserted into the rubber tube of the mining gas sampling bulb with an inner diameter of 6mm, and the tail end of the connector is inserted into a PVC hose with an inner diameter of 2mm and an outer diameter of 4mm.

3. The sampling and conversion device for a coal spontaneous combustion programmed heating experiment according to claim 1, characterized in that, The reducing straight connector (2) has two PVC hoses with an inner diameter of 2mm and an outer diameter of 4mm inserted into its two ends, and a PVC hose with an inner diameter of 4mm and an outer diameter of 6mm inserted into its two ends, respectively.

4. The sampling and conversion device for a coal spontaneous combustion programmed heating experiment according to claim 1, characterized in that, The pagoda connector (4) is an 8mm pagoda connector.

5. A sampling and conversion device for a coal spontaneous combustion programmed heating experiment according to claim 1, characterized in that, The reducing straight connector (2) is a 4mm to 6mm connector.

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