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Pressure relief valve with overpressure protection function and corresponding mining layered pressure relief air bag retaining wall

A technology of overpressure protection and pressure relief valves, which is applied in the direction of ventilation valves, safety valves, balance valves, etc., and can solve problems such as inconvenient transportation, easy displacement, and additional air storage tanks

Pending Publication Date: 2021-05-18
兖矿能源集团股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second method needs to carry an additional gas storage tank, which is inconvenient to transport
[0006] After the existing airbag is inflated, the weight is too light, and it is easy to shift under the impact of external force

Method used

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  • Pressure relief valve with overpressure protection function and corresponding mining layered pressure relief air bag retaining wall
  • Pressure relief valve with overpressure protection function and corresponding mining layered pressure relief air bag retaining wall
  • Pressure relief valve with overpressure protection function and corresponding mining layered pressure relief air bag retaining wall

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] Implementation mode one: if Figure 1-4 As shown, the pressure relief valve with overpressure protection includes a valve seat 1, a fastening nut 2, a valve core 3, a coil spring 4 and an adjustable nut 5, and the valve seat 1 includes a tapered hole seat 101 and a solenoid 102, the inner end of the valve seat 1 is provided with a base plate 103, and the inside and outside of the screw tube 102 are respectively provided with internal threads and external threads, and the fastening nut 2 is screwed on the external thread of the screw tube 102, and the adjustable nut 5 is screwed on the inner thread of the spiral tube 102.

[0028] Described spool 3 comprises conical frustum 301 and guide post 302, and the conical center angle of the outer conical surface of described conical frustum 301 is identical with the conical central angle of the inner conical surface of described conical hole seat 101, and described guide post 302 is fixed On the large end axis of the cone trunc...

Embodiment approach 2

[0031] Implementation mode two: if Figure 5-6 As shown, the mine-used layered pressure-relief airbag retaining wall includes an airbag body 11, which is provided with an inflation valve 12 and a pressure relief valve 13, and the inner space of the airbag body 11 is divided into an upper air chamber 14 and a lower airbag body. The air chamber 15 is characterized in that: the upper air chamber 14 and the lower air chamber 15 are respectively provided with an inflation valve 12 and a pressure relief valve 13, and the pressure relief valves 13 of the upper air chamber 14 and the lower air chamber 15 are both described in the first embodiment Pressure relief valve with overpressure protection.

[0032] A water filling chamber 16 is also provided below the lower air chamber 15, and the water filling chamber 16 is provided with a water filling valve 17 and a pressure relief valve 13. pressure relief valve. Fixing holes 18 are respectively arranged on the sides of the upper air cha...

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Abstract

The invention relates to a pressure relief valve with an overpressure protection function and a corresponding mining layered pressure relief air bag retaining wall. In order to overcome the defects in the prior art, the pressure relief valve with the overpressure protection function comprises a valve seat, a fastening nut, a valve element, a spiral spring and an adjustable nut, wherein a blind hole is formed in the center of the outer surface of the valve element, a pressure relief hole is formed in the center of the blind hole, the inner end of the pressure relief hole is expanded to form a horn mouth, a plugging core is arranged in the pressure relief hole, the inner diameter of the plugging core is smaller than that of the pressure relief hole, the inner end of the plugging core is connected to the small end of an inverted-frustum-shaped plug, and the inverted-frustum-shaped plug can plug the horn mouth. The invention further relates to the corresponding mining layered pressure relief air bag retaining wall. The pressure relief valve with the overpressure protection function and the corresponding mining layered pressure relief air bag retaining wall are simple in structure, convenient to manufacture and use and suitable for emergency rescue sealing operation in water permeation and gas leakage accidents of various large mine roadways.

Description

technical field [0001] The invention relates to a pressure relief valve with overpressure protection and a corresponding mine layered pressure relief airbag retaining wall. Background technique [0002] In order to reduce the air leakage from both ends of the coal mining face to the gob at the back and prevent spontaneous combustion of the coal seam, all mines in Yankuang now use manual stomping to build broken coal bag walls to seal the ends. Manually building broken coal bag walls at both ends of the working face has long construction time and requires a lot of labor. In addition, there are risk factors such as incomplete roofs and unstable toxic and harmful gases during construction at the ends, which seriously threaten on-site construction personnel. safety and mine safety. [0003] The 3rd issue of "Coal Mine Safety" published in March, 1998, the 45th-47th page discloses a kind of air bag type fast sealing technology, and it discloses that a kind of air bag is divided ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/04F16K17/06F16K17/164F16K24/04E21F17/107
CPCE21F17/107F16K17/044F16K17/06F16K17/164F16K24/04
Inventor 王洪权高维强李志勇刘星乐辛民上官良良刘伟孙庆锋徐光杜廷斌苏丽君
Owner 兖矿能源集团股份有限公司
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