Gas conveying device

Abstract

The utility model discloses a gas conveying device which comprises a plurality of conveying pipes which are connected in sequence, each conveying pipe comprises a contraction joint, a middle pipe section and an expansion joint which are connected in sequence, the contraction joints of the conveying pipes are inserted into the expansion joints of the adjacent conveying pipes, and the outer sides of the butt joint positions of the conveying pipes are connected in a fastened mode through clamp joints. Each conveying pipe is provided with a leak detector, a concentration detector and an automatic powder spraying explosion suppression device. The leak detector is arranged at the end, close to the expansion connector, of the conveying pipe. The leak detector is arranged at the butt joint position of the conveying pipe, the leak detector can find the leakage problem in time, overhaul and maintenance are convenient, conveying safety is guaranteed in multiple aspects, explosion risk factors are avoided, in addition, by arranging the automatic powder spraying explosion suppression device, when an accident occurs, a Sauss explosion propagation chain can be blocked, the accident is prevented from being further expanded, and the safety of the conveying pipe is improved. Therefore, the conveying safety is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas transportation, in particular to a gas transportation device. Background Art

[0002] In the tunnels or mining of coal mines, in order to avoid accidents such as gas explosions, it is necessary to discharge the gas in the tunnels. For the convenience of construction, the gas delivery pipe currently used is composed of multiple gas pipes connected in series. As for the gas delivery device, in the prior art, after searching, the utility model patent with Chinese patent publication number CN214425319U discloses a mining gas delivery pipe, such as Figure 1 As shown, it mainly includes a plurality of pipes a, each of which is provided with an intermediate layer and an inner layer in sequence, and adjacent pipes are connected by connectors b.

[0003] In the prior art, gas delivery devices similar to the above-mentioned technical solutions have areas for improvement during actual implementation: no leakage detection device is provided at the joints of adjacent pipelines. Although the probability of leakage at the joints of the delivery pipes is low, if a special leakage occurs, it is not easy to detect the gas leakage, thereby posing a certain risk of gas explosion or other safety threats. Utility Model Content

[0004] In view of the deficiencies and defects in the prior art, the purpose of the utility model is to provide a gas delivery device to solve the problem in the prior art that it is not easy to find gas leakage at the joints of adjacent delivery pipes, thereby posing a certain risk of gas explosion or other safety threats.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a gas conveying device, comprising a plurality of conveying pipes connected in sequence, each of which is provided with an intermediate layer and an inner layer in sequence on the inner side, each of which comprises a contraction joint, an intermediate pipe section and an expansion joint connected in sequence, the contraction joint of the conveying pipe is inserted into the expansion joint of the adjacent conveying pipe, and the conveying pipes are fastened to each other at the outer side of the joint by a clamp joint, a plurality of spiral conveying strips are spirally arranged on the inner wall of the intermediate pipe section, each conveying pipe is provided with a leak detector, a concentration detector and an automatic powder spraying explosion suppression device, and the leak detector is arranged at one end of the conveying pipe close to the expansion joint.

[0006] As a further improvement of the utility model, the clamp joint comprises two detachably connected semi-circular half joints, a rubber layer is provided on the inner side of the clamp joint, and the rubber layer is interference-connected with the delivery pipe.

[0007] As a further improvement of the utility model, two butt joint plates are provided on the butt joint side of the two half joints, and the butt joint plates on the two half joints are detachably connected by bolts.

[0008] As a further improvement of the utility model, a sealing rubber ring is arranged on the inner side of the expansion joint of each of the delivery pipes, and the sealing rubber ring is interference-connected with the inner wall of the expansion joint.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] 1. By installing a leak detector at the joint of the conveying pipe, when the conveying pipe leaks, the leak detector can detect the leakage problem in time, which is convenient for inspection and maintenance, thereby ensuring the safety of transportation in many aspects and avoiding the risk of explosion. In addition, by installing an automatic powder spray explosion suppression device, when the gas catches fire or explodes, the automatic powder spray explosion suppression device can form an explosion suppression barrier with a specific flame retardant medium, block the SARS explosion transmission chain, and avoid further expansion of the accident, thereby ensuring the safety of transportation. In addition, by installing a concentration detector, the reaction gas concentration can be detected, which is convenient for the staff to observe intuitively, and when the gas concentration is high, it is convenient for the staff to take timely measures.

[0011] 2. By arranging a sealing rubber ring on the inner side of the expansion joint on the delivery pipe, the sealing performance of the delivery pipe at the joint is improved to reduce or avoid gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings:

[0013] Figure 1 It is a structural schematic diagram of the prior art;

[0014] Figure 2 It is a schematic diagram of the structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the clamp;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure in the middle pipe section;

[0017] In the figure: 1. conveying pipe; 11. contraction joint; 12. intermediate pipe section; 13. expansion joint; 2. clamp joint; 21. half joint; 22. rubber layer; 23. docking plate; 3. leak detector; 4. concentration detector; 5. automatic powder spraying explosion suppression device; 6. sealing rubber ring; 7. spiral conveying strip. DETAILED DESCRIPTION

[0018] The following is combined with Figure 2-4 The utility model is further described in detail. For a clearer illustration, only the structure related to the utility model is shown in the figure.

[0019] For the convenience of description, the coordinate system is defined as Figure 2As shown, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0020] The utility model discloses a gas delivery device. Figure 2 A gas delivery device comprises a plurality of delivery pipes 1 connected in sequence, wherein each delivery pipe 1 is provided with an intermediate layer and an inner layer in sequence, and the above arrangement is the same as the prior art. In the present application, each of the delivery pipes 1 comprises a shrink joint 11, an intermediate pipe section 12 and an expansion joint 13 connected in sequence, and the shrink joint 11 of the delivery pipe 1 is inserted into the expansion joint 13 of the adjacent delivery pipe 1, and the delivery pipes 1 are fastened and connected at the outside of the butt joint by a clamp joint 2, such as Figure 3 As shown, the clamp joint 2 comprises two detachably connected semicircular half joints 21, the inner side of the clamp joint 2 is provided with a rubber layer 22, and the rubber layer 22 is interference-connected with the delivery pipe 1. Two half joints 21 are provided with two butt joint plates 23 on the butt joint side, and the butt joint plates 23 on the two half joints 21 are detachably connected by bolts. Figure 4 As shown, a plurality of spiral conveying strips 7 are spirally arranged on the inner wall of the middle pipe section 12, thereby facilitating the conveyance of gas.

[0021] Each conveying pipe 1 is provided with a leak detector 3, a concentration detector 4 and an automatic powder spray explosion suppression device 5, which are all existing technology products. The leak detector 3 is arranged at one end of the conveying pipe 1 close to the expansion joint 13.

[0022] In addition, a sealing rubber ring 6 is provided on the inner side of the expansion joint 13 of each of the delivery pipes 1. The sealing rubber ring 6 is interference-connected with the inner wall of the expansion joint 13 to improve the sealing performance of the delivery pipe 1 at the joint and reduce or avoid gas leakage.

[0023] The utility model sets a leak detector 3 at the joint of the delivery pipe 1. Therefore, when the delivery pipe 1 leaks, the leak detector 3 can detect the leakage problem in time, which is convenient for inspection and maintenance, thereby ensuring the transportation safety in many aspects and avoiding the risk of explosion. In addition, by setting an automatic powder spray explosion suppression device 5, when the gas catches fire or explodes, the automatic powder spray explosion suppression device 5 can form an explosion suppression barrier with a specific flame retardant medium, block the SARS explosion transmission chain, avoid further expansion of the accident, and ensure transportation safety. In addition, by setting a concentration detector 4, the reaction gas concentration can be detected, which is convenient for the staff to observe intuitively, and when the gas concentration is high, it is convenient for the staff to take timely measures.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. It should be understood that the specific implementation methods described herein are only used to understand the present utility model, and are not used to limit the present utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present utility model.

Claims

1. A gas delivery device, comprising a plurality of delivery pipes connected in sequence, each delivery pipe having an intermediate layer and an inner layer arranged in sequence on the inner side thereof, characterized in that: Each of the conveying pipes includes a contraction joint, an intermediate pipe section and an expansion joint which are connected in sequence. The contraction joint of the conveying pipe is inserted into the expansion joint of the adjacent conveying pipe, and the conveying pipes are fastened together at the outside of the butt joint by a clamp joint. A plurality of spiral conveying strips are spirally arranged on the inner wall of the intermediate pipe section. Each conveying pipe is provided with a leak detector, a concentration detector and an automatic powder spraying explosion suppression device. The leak detector is arranged at one end of the conveying pipe close to the expansion joint.

2. A gas delivery device according to claim 1, characterized in that: The clamp joint comprises two detachably connected semicircular half joints, and a rubber layer is arranged on the inner side of the clamp joint, and the rubber layer is interference-connected with the delivery pipe.

3. A gas delivery device according to claim 2, characterized in that: Two butt joint plates are provided on the butt joint side of the two half joints, and the butt joint plates on the two half joints are detachably connected by bolts.

4. A gas delivery device according to any one of claims 1 to 3, characterized in that: A sealing rubber ring is arranged on the inner side of the expansion joint of each of the delivery pipes, and the sealing rubber ring is interference-connected with the inner wall of the expansion joint.

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