A nitrogen injection control device for a gob

Abstract

The utility model discloses a kind of underground goaf nitrogen injection regulation and control devices.Underground goaf nitrogen injection regulation and control device, comprising: nitrogen injection pipeline;The nitrogen injection pipeline includes multiple three-way pipes and connecting pipes;Guiding assembly, switch assembly and steel wire rope are arranged in the three-way pipe;The guiding assembly includes ring pipe, guide wheel, two connecting rods are installed between the guide wheel and the ring pipe, the ring pipe is fixed in one end of the three-way pipe, multiple guide holes are opened on the ring pipe.The underground goaf nitrogen injection regulation and control device provided by the utility model is set by nitrogen injection pipeline including multiple three-way pipes and connecting pipes, and guiding assembly including ring pipe, guide wheel and guide hole is installed in three-way pipe, so that multiple steel wire ropes in nitrogen injection pipeline can pass through guide hole and guide wheel, and then connected with switch assembly, effectively guide multiple steel wire ropes in nitrogen injection pipeline, reduce the possibility of winding steel wire rope.

Description

Technical Field

[0001] This utility model relates to the technical field of nitrogen injection control devices for goaf areas, and in particular to a nitrogen injection control device for goaf areas underground. Background Technology

[0002] Fire is one of the major hazards affecting safe coal mining, and injecting nitrogen into the goaf is a common method to prevent mine fires. Currently, most coal mines use nitrogen injection pipelines buried in the goaf to prevent fires from occurring there.

[0003] A document with publication number CN218509548U discloses a long-distance nitrogen injection pipeline control device for goaf areas, belonging to the field of coal mine fire prevention and extinguishing technology. This device includes an opening / closing assembly and a fastening assembly. The opening / closing assembly includes a sealing section and a traction section. The traction section is located on the sealing section. In use, the steel wire rope is released, and the baffle is in the open state. At this time, the first set of traction sections is close to the outside of the goaf area. The steel wire rope is fastened, the first set of baffles closes, and nitrogen is injected. The nitrogen flows into the goaf area within a 0-30 meter range through the second set of baffles. This cycle continues, ensuring that nitrogen is injected into the goaf area at 30-meter intervals. Installing this long-distance nitrogen injection pipeline control device ensures equidistant nitrogen injection into the goaf area, while reducing the need for one trip to lay the nitrogen injection pipeline, significantly saving workers' time in laying pipelines, reducing labor intensity, and also saving some investment capital.

[0004] As is well known, the goaf is quite long, requiring multiple steel wire ropes to control the opening and closing of each baffle. Nitrogen is then replenished as needed at monitoring locations in the goaf. However, the steel wire ropes lack effective positioning and guidance measures within the pipeline, and multiple steel wire ropes may become entangled within the pipeline, causing the baffles to malfunction and making it impossible to control the normal emission of nitrogen.

[0005] Therefore, it is necessary to provide a nitrogen injection control device for underground goaf areas to solve the above-mentioned technical problems. Summary of the Invention

[0006] In response to the above situation and to overcome the shortcomings of existing technology, this utility model provides a nitrogen injection control device for underground goaf areas that can guide the orderly arrangement of wire ropes and reduce the possibility of wire rope entanglement.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The underground goaf nitrogen injection control device includes: a nitrogen injection pipeline, which includes multiple tee pipes and connecting pipes. A guide assembly, a switch assembly, and a wire rope are installed inside the tee pipes. The guide assembly includes a ring pipe and a guide wheel. Two connecting columns are installed between the guide wheel and the ring pipe. The ring pipe is fixed to one end of the tee pipe. Multiple guide holes are opened on the ring pipe. The guide holes are set to avoid the position of the guide wheel. After the wire rope passes through the guide holes, it turns after passing through the guide wheel and is connected to the switch assembly.

[0008] Preferably, both ends of the tee pipe have embedded grooves, and an embedded ring is fixedly installed on the outside of the ring pipe.

[0009] Preferably, the switch assembly includes a fixed plate, a sealing plate, a connecting rod, and a spring. The fixed plate is fixed inside the tee pipe by threaded installation or welding. The connecting rod is fixedly connected to the sealing plate and passes through the fixed plate. The spring is sleeved on the connecting rod. The end of the connecting rod away from the spring is connected and fixed to the wire rope. The diameter of the sealing plate is smaller than that of the fixed plate.

[0010] Preferably, a limiting block is fixedly installed at one end of the connecting rod.

[0011] Preferably, multiple vent holes are provided on the fixing plate, and a sealing ring is fixedly installed on one side of the fixing plate.

[0012] Preferably, a connecting ring is fixedly installed at the top of the connecting rod, and the connecting ring is connected to the wire rope.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) This utility model sets up a nitrogen injection pipe including multiple tee pipes and connecting pipes, and installs a guiding component including a ring pipe, a guide wheel and a guide hole in the tee pipe, so that multiple steel wire ropes in the nitrogen injection pipe can pass through the guide hole and the guide wheel and connect to the switch component, which effectively guides the multiple steel wire ropes in the nitrogen injection pipe and reduces the possibility of steel wire ropes getting tangled. (2) By setting an embedding groove and an embedding ring, this utility model can facilitate the installation and disassembly of the components; (3) By setting a switch assembly including a fixing plate, a sealing plate, a connecting rod and a spring, this utility model can conveniently control the emission of nitrogen and effectively improve the service life of the wire rope; (4) By fixing a limiting block at one end of the connecting rod, this utility model can effectively prevent the spring from falling off the connecting rod; (5) By setting a vent and a sealing ring, this utility model can conveniently control the injection or stop of nitrogen; (6) By installing a connecting ring at the top of the connecting rod, the present invention can facilitate the connection between the connecting rod and the wire rope. Attached Figure Description

[0014] Figure 1 A schematic diagram of the nitrogen injection pipeline in the underground goaf nitrogen injection control device provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the internal structure of the three-way pipe in the nitrogen injection control device for the underground goaf area shown; Figure 3 for Figure 1 The diagram shows the structure of the guide component in the nitrogen injection control device for the downhole goaf. Figure 4 for Figure 1 The diagram shows the structure of the switching assembly in the nitrogen injection control device for the underground goaf. Figure 5 for Figure 1 The diagram shows the usage of the switching components in the nitrogen injection control device for the underground goaf.

[0015] The corresponding names of the reference numerals in the attached drawings are: 1-Tee pipe, 2-Connecting pipe, 11-Switch assembly, 111-Fixing plate, 1111-Ventilation hole, 1112-Sealing ring, 112-Sealing plate, 113-Connecting rod, 114-Spring, 115-Limiting block, 116-Connecting ring, 12-Guide assembly, 121-Ring pipe, 122-Guide wheel, 123-Guide hole, 124-Connecting post, 125-Embedded ring, 13-Wire rope. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments. Example

[0017] like Figure 1-5As shown, the nitrogen injection control device for underground goaf areas provided by this utility model includes: a nitrogen injection pipeline, the farthest end of which is closed, and the near end which can be set at a suitable position to connect with a nitrogen injection control device (control device body). The nitrogen injection control device injects nitrogen into the nitrogen injection pipeline. The nitrogen injection pipeline includes multiple T-pipes 1 and connecting pipes 2. Connecting pipes 2 are installed between the T-pipes 1. There are multiple connecting pipes 2, so that the spacing between the T-pipes 1 is 30m. A guide component 12, a switch component 11 and a steel wire rope 13 are set in the T-pipe 1. The switch component 13 can adopt the structure disclosed in CN218509548U, which will not be described in detail here. A control device body is installed at a position far away from the goaf area. The control device body is located at one end of the connecting pipe 2. One end of the steel wire rope 13 is connected to the switch component 11 and is guided and arranged by the guide component 12 before being connected to the control device body. The control device body is used to control the pulling and releasing actions of the steel wire rope 13. Specifically, the guiding component 12 includes a ring pipe 121 and a guiding wheel 122. Two connecting posts 124 are installed between the guiding wheel 122 and the ring pipe 121. The ring pipe 121 is fixed to one end of the three-way pipe 1, so that the guiding wheel 122 is located in the middle of the three-way pipe 1, that is, above the switching component 11. Multiple guiding holes 123 are opened on the ring pipe 121. The guiding holes 123 should be set to avoid the position of the guiding wheel 122. After the steel wire rope 13 passes through the guiding holes 123, it turns after passing through the guiding wheel 122 and connects to the switching component 11. The port of the switching component 11 is the nitrogen exhaust port. In use, the remote control device body of the goaf area controls the opening and closing state of the switching component 11 by pulling the steel wire rope 13, thereby controlling the injection or stopping of nitrogen into the goaf area. The multiple steel wire ropes 13 located inside the nitrogen injection pipeline are basically arranged in parallel after passing through the guide holes 123 corresponding to their respective positions. This makes it less likely for them to become entangled inside the pipeline. When pulling and releasing the steel wire ropes 13, they are less likely to interfere with other steel wire ropes 13, which can effectively reduce the possibility that the switch assembly 11 cannot be effectively controlled.

[0018] By setting up a nitrogen injection pipeline including multiple T-pipes 1 and connecting pipes 2, and installing a guiding assembly 12 including a ring pipe 121, a guide wheel 122 and a guide hole 123 in the T-pipe 1, multiple steel wire ropes 13 in the nitrogen injection pipeline can pass through the guide hole 123 and the guide wheel 122 and connect to the switch assembly 11, which effectively guides the multiple steel wire ropes 13 in the nitrogen injection pipeline and reduces the possibility of entanglement. Example

[0019] like Figure 2-3As shown, embedding grooves 14 are provided at both ends of the tee pipe 1, and an embedding ring 125 is fixedly installed on the outside of the ring pipe 121. The embedding ring 125 can be integrally formed with the ring pipe 121. During installation, the ring pipe 121 is inserted into one end of the tee pipe 1, so that the embedding ring 125 enters the embedding groove 14. Then, the tee pipe 1 is connected to the connecting pipe 2 (a sealing gasket should be installed), and the ring pipe 121 is pressed tightly inside the tee pipe 1. This design facilitates the installation and removal of the guide assembly 12.

[0020] By setting the embedding slot 14 and the embedding ring 121, the installation and removal of the component 12 can be easily guided. Example

[0021] like Figure 2 and Figure 4 As shown, the switch assembly 11 includes a fixed plate 111, a sealing plate 112, a connecting rod 113, and a spring 114. The fixed plate 111 is fixed inside the tee pipe 1 by threaded installation or welding. The connecting rod 113 is fixedly connected to the sealing plate 112 and passes through the fixed plate 111. The spring 114 is sleeved on the connecting rod 113. The end of the connecting rod 113 away from the spring 114 is connected and fixed to the wire rope 13. The diameter of the sealing plate 112 is smaller than that of the fixed plate 111. In use, pulling the wire rope 13 moves the sealing plate 112 away from the fixed plate 111. The fixed plate 111 is compressed and the spring 114 is compressed, which opens the gas passage on the fixed plate 111. Nitrogen gas in the pipe is discharged after passing through the fixed plate 111. The wire rope 13 is released, and under the action of the spring 114, the sealing plate 112 is pressed against the top of the fixed plate 111, which closes the gas passage of the fixed plate 111 and prevents nitrogen gas in the pipe from being discharged. This structural design ensures that the wire rope 13 is only in a taut state when nitrogen gas needs to be discharged. The nitrogen gas discharge time is short, and the switch assembly 11 is in a closed state for a long time, which can effectively improve the service life of the wire rope 13.

[0022] By setting up a switch assembly 11 including a fixing plate 111, a sealing plate 112, a connecting rod 113 and a spring 114, the emission of nitrogen can be easily controlled and the service life of the wire rope 13 can be effectively improved. Example

[0023] like Figure 4 As shown, in this embodiment, a limiting block 115 is fixedly installed at one end of the connecting rod 113. The limiting block 115 can effectively prevent the spring 114 from falling off the connecting rod 113.

[0024] By fixing a limiting block 115 to one end of the connecting rod 113, the spring 114 can be effectively prevented from falling off the connecting rod 113. Example

[0025] like Figure 5As shown, in this embodiment, multiple ventilation holes 1111 are opened on the fixed plate 111, and a sealing ring 1112 is fixedly installed on the side of the fixed plate 111 facing the sealing plate 112. In use, when the sealing plate 112 is away from the fixed plate 111, nitrogen can be discharged through the ventilation holes 1111 and injected into the goaf. When the sealing plate 112 is attached to the fixed plate 111 and the sealing ring 1112 is pressed, nitrogen cannot be discharged through the ventilation holes 1111.

[0026] By setting the vent 1111 and the sealing ring 1112, the injection or stop of nitrogen can be easily controlled. Example

[0027] like Figure 2 and Figure 4 As shown, in this embodiment, a connecting ring 116 is fixedly installed at the top of the connecting rod 113, and the buckle (similar to a key ring) at the end of the wire rope 13 is connected to the connecting ring 116.

[0028] By installing a connecting ring 116 at the top of the connecting rod 113, it is easy to connect the connecting rod 113 to the wire rope 13.

[0029] Working principle: During use, the control device body controls the opening and closing state of the switch assembly 11 by pulling the steel wire rope 13, thereby controlling the injection or cessation of nitrogen injection into the goaf. The multiple steel wire ropes 13 located inside the nitrogen injection pipeline are essentially parallel after passing through the guide holes 123 corresponding to their respective positions, making it less prone to tangling within the pipeline. When pulling and releasing the steel wire ropes 13, interference with other steel wire ropes 13 is unlikely, effectively reducing the possibility of the switch assembly 11 failing to provide effective control.

Claims

1. A nitrogen injection control device for underground goaf areas, characterized in that, include: Nitrogen injection pipeline; The nitrogen injection pipeline includes multiple tee pipes (1) and connecting pipes (2); The three-way pipe (1) is provided with a guide assembly (12), a switch assembly (11) and a steel wire rope (13); The guiding assembly (12) includes a ring tube (121) and a guide wheel (122). Two connecting posts (124) are installed between the guide wheel (122) and the ring tube (121). The ring tube (121) is fixed to one end of the three-way pipe (1). Multiple guide holes (123) are opened on the ring tube (121). After the wire rope (13) passes through the guide holes (123), it turns after passing through the guide wheel (122) and is connected to the switch assembly (11).

2. The nitrogen injection control device for underground goaf areas according to claim 1, characterized in that, Both ends of the three-way pipe (1) are provided with embedding grooves, and the outer side of the ring pipe (121) is fixedly installed with an embedding ring (125).

3. The nitrogen injection control device for underground goaf areas according to claim 1, characterized in that, The switch assembly (11) includes a fixing plate (111), a sealing plate (112), a connecting rod (113), and a spring (114). The fixing plate (111) is fixed inside the tee pipe (1). The connecting rod (113) is fixedly connected to the sealing plate (112). The connecting rod (113) passes through the fixing plate (111). The spring (114) is sleeved on the connecting rod (113). The end of the connecting rod (113) away from the spring (114) is connected and fixed to the wire rope (13). The diameter of the sealing plate (112) is smaller than that of the fixing plate (111).

4. A nitrogen injection control device for underground goaf areas according to claim 3, characterized in that, A limiting block (115) is fixedly installed at one end of the connecting rod (113).

5. A nitrogen injection control device for underground goaf areas according to claim 3, characterized in that, Multiple ventilation holes (1111) are provided on the fixing plate (111), and a sealing ring (1112) is fixedly installed on one side of the fixing plate (111).

6. A nitrogen injection control device for underground goaf areas according to claim 3, characterized in that, A connecting ring (116) is fixedly installed at the top of the connecting rod (113), and the connecting ring (116) is connected to the wire rope (13).

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