CN112196606A

CN112196606A - Automatic explosion suppression device for gas

Info

Publication number: CN112196606A
Application number: CN202010907691.9A
Authority: CN
Inventors: 翟治国
Original assignee: Quanzhou Quanrun Jiming Technology Co ltd
Current assignee: Quanzhou Quanrun Jiming Technology Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-01-08

Abstract

The invention discloses an automatic explosion suppression device for gas, and belongs to the technical field of explosion suppression equipment. The technical scheme of the invention is as follows: the gas automatic explosion suppression device comprises a shell, wherein a plugging cap sliding sleeve is arranged in the shell, a piston plugging cap is arranged in the plugging cap sliding sleeve, one end of the piston plugging cap is positioned in the plugging cap sliding sleeve, and the other end of the piston plugging cap is positioned outside the plugging cap sliding sleeve and is used for plugging an exhaust port of the gas automatic explosion suppression device; the outer side of the piston plug cap is provided with a limiting mechanism, one end of the limiting mechanism is a triggering end, the other end of the limiting mechanism is a limiting end, the triggering end is connected with the shock wave sensing device to trigger the action of the limiting end, and the working state of the starting triggering device is changed by the limiting end through the contact with the piston plug cap or not; the technical scheme of the invention has the characteristics of simple structure, easy processing, sensitive and reliable action and the like, is suitable for severe environment, and greatly reduces the maintenance amount in use.

Description

Automatic explosion suppression device for gas

Technical Field

The invention belongs to the technical field of explosion suppression equipment, and particularly relates to an automatic explosion suppression device for gas.

Background

Coal mine gas, also called coal bed gas, is mixed gas consisting of methane, carbon dioxide, nitrogen and the like escaping from coal and surrounding rocks, exists under a coal mine, is a harmful factor in coal mine production, not only pollutes air, but also causes explosion when encountering fire when the content of the gas in the air is 5-16 percent, thereby causing accidents. In order to ensure the safe production of the coal mine, strict explosion suppression measures must be adopted under the coal mine.

The national coal mine safety regulation requires that a method for restraining gas and coal dust explosion underground is generally to hang an explosion-proof water bag on a roadway support frame, and the method is simple but has poor effect. The working principle of the automatic explosion-proof device is that when gas and coal dust explosion occurs, the flame sensor detects that a flame signal is transmitted to the controller, the controller starts a signal for the explosion suppressor after operation and discrimination, the explosion suppressor generates high-temperature and high-pressure gas instantly, the high-pressure gas is subjected to fire extinguishing and cooling, and the dry powder extinguishing agent pressurized to the container of the explosion suppressor is sprayed instantly with an explosion suppression medium to prevent explosion.

Due to the factors of severe underground environmental conditions, instability of electrical elements and the like, the automatic explosion-proof device for self-generating gas is easy to cause misoperation, and the explosion suppression effect is not ideal due to the short residence time of the fire extinguishing agent in the air and the like.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the invention aims to provide an automatic gas explosion suppression device which has the characteristics of simple structure, easiness in processing, sensitive and reliable action and the like, is suitable for severe environments, and greatly reduces the maintenance amount during use.

In order to solve the technical problems, the invention adopts the following technical scheme:

an automatic gas explosion suppression device comprises a shell, wherein a plugging cap sliding sleeve is arranged inside the shell, a piston plugging cap is arranged in the plugging cap sliding sleeve, one end of the piston plugging cap is positioned inside the plugging cap sliding sleeve, and the other end of the piston plugging cap is positioned outside the plugging cap sliding sleeve and is used for plugging an exhaust port of the automatic gas explosion suppression device; the outer side of the piston plug cap is provided with a limiting mechanism, one end of the limiting mechanism is a trigger end, the other end of the limiting mechanism is a limiting end, the trigger end is connected with the shock wave sensing device to trigger the action of the limiting end, and the working state of the trigger device is changed by the fact that the limiting end is in contact with the piston plug cap or not.

The limiting mechanism comprises a cam, a tripping plate and a ball, the cam is positioned at the triggering end, and the ball is positioned at the limiting end; the outer side of the plugging cap sliding sleeve is symmetrically provided with a mounting plate, the tripping plate is rotatably mounted on the mounting plate, and a tension spring is arranged above the joint of the tripping plate and the mounting plate and connected between the tripping plate and the shell; the cam sets up and is corresponding the position on dropout board top and be located between the trip plate of stifled cap sliding sleeve both sides, and when the bellying of cam supported the dropout board of both sides, the bottom of dropout board will the ball supports in the recess on piston stifled cap lateral wall.

And a tripping bearing is arranged at one end of the tripping plate matched with the cam.

The cam is installed on the cam shaft, bearing seats for installing the cam shaft are respectively arranged on the shell corresponding to the two ends of the cam shaft, the cam shaft extends out of the shell at one end, and a handle is arranged at one end of the cam shaft extending out of the shell.

The middle part of the cam is circular, the two sides of the cam are symmetrically provided with bulges, and the bulges at the two sides of the cam respectively support the tripping plates at the two sides in a daily state.

The shock wave induction device comprises a cam, a shock wave induction device and a cam, wherein a cam pull rod is arranged on the cam, one end of the cam pull rod is fixedly connected with the cam, and the other end of the cam pull rod is provided with a through hole used for being connected with a pull wire of the shock wave induction device.

The inner side of the shell is provided with a support, the support is arranged on the side wall of the shell adjacent to the shock wave induction device, and the support is provided with a guide wheel set.

Wherein, the inside of stifled cap sliding sleeve top surface is provided with the blotter.

The air inlet is connected with a high-pressure explosion suppression medium air source, one end of the piston plugging cap, which is positioned outside the plugging cap sliding sleeve, is plugged between the air inlet and the air outlet, and whether the air inlet is communicated with the air outlet or not is controlled by the movement of the piston plugging cap.

Further, a detection air passage is arranged below the exhaust port and is communicated with the air inlet, and a check valve for avoiding air leakage and a pressure gauge for detecting air pressure in the air flow passage are arranged at the tail end of the detection air passage; the exhaust ports are uniformly distributed in the circumferential direction below the housing.

Compared with other methods, the method has the beneficial technical effects that:

1. according to the automatic gas explosion suppression device, the automatic gas explosion suppression device is triggered through the transmission of displacement actions among components, no electric element is adopted, the phenomenon that the electric element is unstable to cause misoperation due to severe underground environment conditions is avoided, operation and identification are not needed, compared with the conventional automatic explosion suppression device which is formed by structures such as a power box, a controller flame sensor, an explosion suppression device assembly and the like, the automatic gas explosion suppression device is simpler in structure, easier to process, suitable for severe environments and greatly reduced in maintenance amount in the using process.

The tripping bearing is arranged at the matching end of the tripping plate and the cam, so that the relative movement of the tripping plate and the cam is smoother, the action is more sensitive, the friction between the tripping plate and the cam is reduced, and the maintenance amount in the use process is further reduced.

In the device, one end of the cam shaft extending out of the shell is provided with the handle, and the handle is convenient for driving the cam shaft to rotate so as to drive the cam to rotate, so that the device is more convenient and labor-saving to operate; the cam is circular in the middle, and symmetrical structures with symmetrical bulges are arranged on two sides of the cam, so that mechanical balance is achieved, and misoperation is prevented; the cam is provided with a cam pull rod which is convenient to be connected with a pull wire of the shock wave induction device, and the installation is convenient.

The device is provided with the guide wheel set, the stay wire of the shock wave induction device is connected with the trigger component after passing through the guide wheel set, and the action transmission is smoother and more accurate; the inboard of stifled cap sliding sleeve top surface is provided with the blotter, and when the stifled cap top was reachd after the release of piston stifled cap, the blotter can effectively cushion the impact of piston stifled cap to stifled cap sliding sleeve, extension fixture's life.

The device is provided with the detection air passage, so that the pressure in the air passage is detected in real time, the normal work of the explosion suppression device is ensured, and the reliability of the explosion suppression device is improved.

Drawings

FIG. 1 is a schematic view of the device of the present invention in its daily configuration;

FIG. 2 is a schematic structural view of the apparatus of the present invention in an operating state;

FIG. 3 is a top cross-sectional view of the apparatus of the present invention;

1. a valve body; 2. a pressure gauge; 3. a seal ring; 4. a ball bearing; 5. a piston plug cap; 6. a cushion pad; 7. a plugging cap sliding sleeve; 8. tripping the bearing; 9. a cam lever; 10. a cam; 11. a camshaft; 12. a cover plate; 13. a guide wheel set; 14. a pull wire; 15. a housing; 16. a releasing plate; 17. an exhaust port; 18. a one-way valve; 19. an air inlet; 20. a tension spring; 21. a bearing seat; 22. a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The words "upper", "lower", "left" and "right" when used herein are merely intended to designate corresponding upper, lower, left and right directions in the drawings, and do not limit the structure thereof.

As shown in fig. 1-3, an automatic gas explosion suppression device provided in an embodiment of the present invention includes a housing 15, a plugging cap sliding sleeve 7 is disposed inside the housing 15, a piston plugging cap 5 is disposed inside the plugging cap sliding sleeve 7, one end of the piston plugging cap 5 is located inside the plugging cap sliding sleeve 7, and the other end of the piston plugging cap 5 is located outside the plugging cap sliding sleeve 7 and is used for plugging an exhaust port 17 of the automatic gas explosion suppression device; and a limiting mechanism is arranged on the outer side of the piston plugging cap 5, one end of the limiting mechanism is a triggering end, the other end of the limiting mechanism is a limiting end, the triggering end is connected with the shock wave sensing device to trigger the action of the limiting end, and the working state of the starting triggering device is changed by the limiting end through whether the limiting end is in contact with the piston plugging cap or not.

In the embodiment, the limiting mechanism comprises a cam 10, a tripping plate 16 and a ball 4, wherein the cam 10 is positioned at the triggering end, and the ball 4 is positioned at the limiting end; the outer side of the plugging cap sliding sleeve 7 is symmetrically provided with a mounting plate, a tripping plate 16 is rotatably mounted on the mounting plate, a tension spring 20 is arranged above the connection part of the tripping plate 16 and the mounting plate, and the tension spring 20 is connected between the tripping plate 16 and the shell 15; the cam 10 is arranged at a position corresponding to the top end of the tripping plate 16 and is positioned between the tripping plates 16 on two sides of the plugging cap sliding sleeve 7, and when the convex part of the cam 10 props against the tripping plates 16 on two sides, the bottom end of the tripping plate 16 props the ball 4 in the groove on the outer side wall of the piston plugging cap 5; specifically, the ball 4 is a steel ball.

The tripping bearing 8 is arranged at one end, matched with the cam 10, of the tripping plate 16, the relative movement of the tripping plate 16 and the cam 10 is smoother due to the tripping bearing 8, the action is more sensitive, and the friction between the tripping plate and the cam is reduced.

The cam 10 is installed on the camshaft 11, bearing blocks 21 for installing the camshaft 11 are respectively arranged on the shell 15 corresponding to the two ends of the camshaft 11, the camshaft 11 extends out of the shell 15 at one end, and a handle 22 is arranged at one end of the camshaft 11 extending out of the shell 15.

The middle part of the cam 10 is circular, the two sides are symmetrically provided with bulges, and the bulges at the two sides respectively support the tripping plates 16 at the two sides under the daily state, in this embodiment, the tripping bearing 8 is arranged, so the tripping bearing 8 is supported.

The cam 10 is provided with a cam pull rod 9, one end of the cam pull rod 9 is fixedly connected with the cam 10, and the other end of the cam pull rod 9 is provided with a through hole used for being connected with a pull wire 14 of the shock wave induction device. The through hole is a long round hole or a rectangular hole.

The inside of casing 15 is provided with the support, the support sets up on casing 15 and the adjacent lateral wall of shock wave induction system, is provided with direction wheelset 13 on the support. The support is L-shaped, guide wheels are respectively arranged at the top end and the inner side of a vertical plate of the support, and a stay wire 14 passes through a guide wheel set 13 and then is connected with the cam pull rod 9.

The inboard of 7 top surfaces of blanking cap sliding sleeve is provided with blotter 6, and is concrete, adopts the buffering cushion.

The valve body 1 is installed to the below of casing 15, is provided with airflow channel in the valve body 1, airflow channel is last to be provided with air inlet 19 and gas vent 17, high pressure explosion suppression medium air supply is connected to air inlet 19, the piston blanking cap 5 is located the outside one end shutoff of blanking cap sliding sleeve 7 and is in between air inlet 19 and the gas vent 17, through whether the removal of piston blanking cap 5 controls air inlet 19 and gas vent 17 and communicates.

The below of gas vent 17 is provided with detects the air flue, detect the air flue and communicate with air inlet 19, the end of detecting the air flue is installed and is avoided gas leakage's check valve 18 and the manometer 2 of the interior gas pressure of detection air flue.

The exhaust ports 17 are evenly distributed in the circumferential direction under the housing 15 to facilitate even spraying of the explosion-suppressing medium.

In this embodiment, the housing 15 includes a side wall and a cover plate 12 at the top end, the bottom end of the side wall is mounted on the valve body 1, and the top end is sealed by the cover plate 12, which facilitates the assembly of the device. Two sides of the side wall of the shell 15 are respectively provided with a bearing seat 21, the camshaft 11 is arranged on the bearing seats 21, one end of the camshaft 11 is closed, the other end of the camshaft 11 extends out of the shell 15, a handle 22 is arranged at the end extending out of the shell 15, the cam 10 is arranged in the middle of the camshaft 11, and two convex surfaces of the cam 10 are respectively contacted with tripping bearings 8 arranged at the upper ends of two tripping plates 16; the concave surface of the cam 10 is provided with a cam pull rod 9, and the upper end of the cam pull rod 9 is provided with a through hole. One end of the pull wire 14 penetrates through the side wall of the shell 15, passes through the guide wheel set 13 and is connected with and fixed in the through hole of the cam pull rod 9.

The upper end of the tripping plate 16 is provided with a shaft hole for installing the tripping bearing 8, the lower end is a convex end surface, the middle of the upper middle part of the tripping plate 16 is provided with a round shaft hole, and a round hole is arranged at a certain distance from the middle of the shaft hole for installing the tripping bearing 8 to the outer side edge of the tripping plate 16; a fixed seat with a round hole is arranged on the wall of the shell 15 which has a certain distance with the symmetrical plane of the central line of the round hole, and hooks at two ends of the tension spring 20 are respectively hooked in the two round holes; the action of the spring is to apply a certain pulling force outwards to the upper end of the tripping plate 16, and the convex surface of the lower end of the tripping plate 16 applies a certain pushing force to the ball 4, so that the ball 4 is tightly contacted with the wall of the piston plugging cap 5.

The cam surface of the cam 10 is tightly contacted with the tripping bearing 8, the convex surface at the lower end of the tripping plate 16 provides the maximum thrust for the ball 4, so that a small part of one side surface of the ball 4 enters the groove of the piston plugging cap 5 and the other part of the side surface is contacted with the circular hole of the cylinder wall of the piston plugging cap of the valve body 1. The function of the piston plug cap is to reliably lock the piston plug cap 5 from moving upwards, and control the air inlet 19 to be sealed and separated from the exhaust hole 17.

The camshaft 11 controls the contact and disconnection of two convex surfaces of the cam 10 and the tripping bearing 8 arranged at the upper end of the two tripping plates 16 through the left-right rotation angle of the cam pull rod 9.

The piston plug cap 5 and the valve body 1 are matched, and a sealing ring 3 is arranged at the position, specifically, the sealing ring 3 is an O-shaped sealing ring.

The specific working principle of the device of the invention is as follows:

the air inlet 19 is communicated with high-pressure explosion suppression medium gas, and under the normal condition, as shown in figure 1, the ball 4 is simultaneously clamped in the groove on the side wall of the piston plugging cap 5 and the circular hole on the cylinder on the outer side of the piston plugging cap 5 sleeved on the valve body 1, so that the piston plugging cap 5 is positioned at the position for plugging the air outlet 17. When the shock wave induction device is subjected to gas and coal dust explosion shock waves, the pull wire 14 of the shock wave induction device generates displacement to pull the cam pull rod 9, as shown in fig. 2, in the rotating process of the cam pull rod 9, the cam shaft 11 and the cam 10, the trip plate 16 and the trip bearing 8 are separated from the convex surface of the cam 10 to reach the concave surface of the cam 10, the trip plate 16 releases the balls 4, meanwhile, the piston plugging cap 5 moves upwards under the pushing of high-pressure explosion suppression medium gas in the air inlet 19, the balls 4 are separated from the groove on the side wall of the piston plugging cap 5, the piston plugging cap 5 leaves the air outlet 17 to enter the plugging cap sliding sleeve 7, and the high-pressure explosion suppression medium gas in the air inlet 19 sprays the explosion suppression medium outwards through the air outlet 17, so that automatic explosion suppression. The explosion suppression medium gas can adopt inert gas.

The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.

Claims

1. The automatic gas explosion suppression device comprises a shell (15) and is characterized in that a plugging cap sliding sleeve (7) is arranged inside the shell (15), a piston plugging cap (5) is arranged in the plugging cap sliding sleeve (7), one end of the piston plugging cap (5) is positioned inside the plugging cap sliding sleeve (7), and the other end of the piston plugging cap (5) is positioned outside the plugging cap sliding sleeve (7) and is used for plugging an exhaust port (17) of the automatic gas explosion suppression device; the outer side of the piston plugging cap (5) is provided with a limiting mechanism, one end of the limiting mechanism is a triggering end, the other end of the limiting mechanism is a limiting end, the triggering end is used for being connected with the shock wave sensing device to trigger the action of the limiting end, and the working state of the starting triggering device is changed by the fact that whether the limiting end is in contact with the piston plugging cap (5) or not.

2. The automatic gas explosion suppression device according to claim 1, wherein the limiting mechanism comprises a cam (10), a trip plate (16) and a ball (4), the cam (10) is located at the trigger end, and the ball (4) is located at the limiting end; mounting plates are symmetrically arranged on the outer side of the plugging cap sliding sleeve (7), a tripping plate (16) is rotatably mounted on the mounting plates, a tension spring (20) is arranged above the joint of the tripping plate (16) and the mounting plates, and the tension spring (20) is connected between the tripping plate (16) and the shell (15); cam (10) set up corresponding the position on dropout board (16) top and lie in between the dropout board (16) of stifled cap sliding sleeve (7) both sides, when the bellying of cam (10) supports dropout board (16) of both sides, the bottom of dropout board (16) will ball (4) support in the recess on piston stifled cap (5) lateral wall.

3. An automatic gas explosion suppression device according to claim 2, wherein the end of the trip plate (16) which is matched with the cam (10) is provided with a trip bearing (8).

4. An automatic gas explosion suppression device according to claim 2, wherein the cam (10) is mounted on a cam shaft (11), bearing seats (21) for mounting the cam shaft (11) are respectively arranged on the housing (15) corresponding to the two ends of the cam shaft (11), the cam shaft (11) extends out of the housing (15) at one end, and a handle (22) is arranged at one end of the cam shaft (11) extending out of the housing (15).

5. The automatic gas explosion suppression device according to claim 2 or 4, wherein the cam (10) is circular in middle, and protrusions are symmetrically arranged on two sides of the cam, and the protrusions on two sides respectively abut against the trip plates (16) on two sides in a daily state.

6. An automatic gas explosion suppression device according to claim 2, wherein a cam pull rod (9) is arranged on the cam (10), one end of the cam pull rod (9) is fixedly connected with the cam (10), and the other end of the cam pull rod (9) is provided with a through hole for connecting with a pull wire (14) of the shock wave induction device.

7. An automatic gas explosion suppression device according to claim 1, wherein a bracket is arranged on the inner side of the housing (15), the bracket is arranged on the side wall of the housing (15) adjacent to the shock wave induction device, and a guide wheel set (13) is arranged on the bracket.

8. An automatic gas explosion suppression device according to claim 1, wherein a buffer pad (6) is arranged on the inner side of the top surface of the plug cap sliding sleeve (7).

9. The automatic gas explosion suppression device according to claim 1, wherein an air flow channel is arranged below the housing (15), an air inlet (19) and an air outlet (17) are arranged on the air flow channel, the air inlet (19) is connected with a high-pressure explosion suppression medium air source, one end of the piston plugging cap (5) positioned outside the plugging cap sliding sleeve (7) is plugged between the air inlet (19) and the air outlet (17), and whether the air inlet (19) is communicated with the air outlet (17) or not is controlled by the movement of the piston plugging cap (5); the gas pressure measuring device is characterized in that a detection gas channel is arranged below the gas outlet (17), the detection gas channel is communicated with the gas inlet (19), a check valve (18) for avoiding gas leakage and a pressure gauge (2) for detecting gas pressure in the gas channel are arranged at the tail end of the detection gas channel.