CN214699252U

CN214699252U - Piston type multistage high-pressure gas switch

Info

Publication number: CN214699252U
Application number: CN202120619597.3U
Authority: CN
Inventors: 刘增粮
Original assignee: Henan Huilong Precision Equipment Manufacturing Co ltd
Current assignee: Henan Huilong Precision Equipment Manufacturing Co ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-11-12
Anticipated expiration: 2031-03-26

Abstract

The utility model relates to an unmanned air vehicle's technical field especially relates to a multistage high-pressure gas switch of piston, slide case, the fixed valve gap that sets up in the valve body top that sets up in the valve body including valve body, matching, the inner wall of case and valve body sealed cooperation, the upper end of case be equipped with the valve pocket, the valve gap on be connected with the intercommunication on the valve pocket and control on the multistage gas control switch of valve pocket pressure release. The utility model discloses when using, improved the control valve through multistage gas control switch to emitter's transmission control precision, when atmospheric pressure in the gas holder reaches 20MPa to 25MPa, the multistage high-pressure gas switch of piston can be quick accurate control gas receiver and the intercommunication and the wall of launch canister, open in the twinkling of an eye, reaction rate is very fast, the multistage high-pressure gas switch of piston can effectual control to the transmission of fire extinguishing bomb, great improvement emitter's transmission control.

Description

Piston type multistage high-pressure gas switch

Technical Field

The utility model relates to a fire extinguishing bomb launcher's technical field especially relates to a multistage high-pressure gas switch of piston.

Background

Current fire extinguishing bomb launcher fills high-pressure air conditioning to the air receiver when the transmission, when pressure reached the default in the air receiver, stopped to aerify the air receiver, when will launching the fire extinguishing bomb, switched on air receiver and launch canister. The gas in the gas storage cylinder enters the control valve through the gas inlet and enters the launching cylinder from the gas outlet, so that high pressure is formed in the launching cylinder, the fire extinguishing bomb is ejected from the launching cylinder under the pushing of high-pressure cold gas, and the takeoff operation of the fire extinguishing bomb is completed. However, the existing launching device has the problems that the launching range is more and more far, the air pressure of the air storage tank is continuously increased along with the increase of the launching range, and when the air pressure of the air storage tank is larger than 10Mpa, a common electromagnetic valve is insensitive to control and cannot be normally opened sometimes, so that the launching control of the launching device is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, a intercommunication has multistage gas control switch in valve gap upper end, has improved the transmission control precision to emitter through multistage gas control switch, and when atmospheric pressure in the gas holder reached 20MPa to 25MPa, the multistage high-pressure gas switch of piston can be in the twinkling of an eye opened, and reaction rate is very fast, great improvement to emitter's transmission control.

In order to solve the above problem, the utility model discloses the technical scheme who takes is:

the utility model provides a multistage high-pressure gas switch of piston, includes the valve body, matches the case that slides and set up in the valve body, the fixed valve gap that sets up in the valve body top, the inner wall of case and valve body sealed cooperation, the upper end of case be equipped with the valve pocket, the valve gap on be connected with the intercommunication on the valve pocket and control on the multistage gas control switch of valve pocket pressure release.

The valve body in set up and vertically link up and be provided with the air vent, the lateral wall in the middle of the valve body on be provided with the air inlet that is linked together with the air vent, the case match to slide and set up in the air vent, the air vent be the echelonment, the diameter of upper end air vent and lower extreme air vent is great, the diameter of middle air vent is less, the case match to slide and set up in the upper end air vent, the air inlet set up on the lateral wall of the valve body at upper end air vent place.

The ladder surface of the upper end of the middle air duct is provided with an annular convex edge protruding upwards, and the convex edge is used for separating the lower end air duct from the air inlet when being in airtight fit with the lower end of the valve core.

The lower end face of the valve core is provided with a groove, a first sealing gasket is arranged in the groove in a matching mode, a pressing plate used for fixing the first sealing gasket is arranged below the first sealing gasket, and the first sealing gasket and the convex edge are matched in a sealing mode to separate a lower end air passage and an air inlet.

The valve core is a stepped shaft, the diameter of the upper end valve core is larger, the diameter of the lower end valve core is smaller, a gap is formed between the lower end valve core and the inner wall of the upper end air channel, the upper end of the valve core is provided with a first blind hole, a first elastic component for resetting the valve core is arranged between the first blind hole and the valve cover, the side wall of the lower end valve core is transversely provided with a first through hole, and the first through hole is communicated with the first blind hole.

The first elastic component is a first spring.

Multistage gas control switch include with valve gap upper end fixed connection's connector, match and slide the piston that sets up in the connector and set up the solenoid valve in the connector upper end, the valve gap on be provided with the air vent, air vent and last valve chamber be linked together, the valve gap on install the macropore release valve, the intercommunication between piston control macropore release valve and the air vent.

The lower end of the connecting body is provided with a piston hole, the piston is arranged in the piston hole in a matching sliding way, a second stepped blind hole is formed in the upper end of the piston, a second elastic component for resetting the piston is arranged between the second stepped blind hole and the upper end of the connecting body, the lower end of the piston is provided with an L-shaped air hole, the lower end of the L-shaped air hole is communicated with an upper end air passage, the L-shaped air holes are communicated with the step-shaped blind holes, the upper end of the connecting body is longitudinally provided with a first air outlet and a second air outlet, the first air outlet hole is communicated with the step-shaped blind hole, the electromagnetic armature of the electromagnetic valve is used for controlling the opening and closing of the second air outlet hole, when the second air outlet is opened, the first air outlet is communicated with the second air outlet, and the upper end of the valve cover 3 is provided with a circle of protrusions 26.

The second elastic component is a second spring.

And a circle of sealing ring is arranged between the valve core and the valve body in a matching way.

The utility model discloses an gain effect is:

the utility model discloses when using, improved the control valve through multistage gas control switch to emitter's transmission control precision, when atmospheric pressure in the gas holder reaches 20MPa to 25MPa, the multistage high-pressure gas switch of piston can be quick accurate control gas receiver and the intercommunication and the wall of launch canister, open in the twinkling of an eye, reaction rate is very fast, the multistage high-pressure gas switch of piston can effectual control to the transmission of fire extinguishing bomb, great improvement emitter's transmission control.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

Referring to fig. 1, the numbering: the valve comprises a valve body 1, a valve core 2, a valve cover 3, an upper valve cavity 4, an air channel 5, an air inlet 6, a convex edge 7, a groove 8, a sealing gasket I9, a pressing plate 10, a blind hole I11, a spring I12, a connector 13, a piston 14, an electromagnetic valve 15, an air vent 16, a piston hole 17, an L-shaped air hole 18, a stepped blind hole II 19, an air outlet I20, an air outlet II 21, a spring II 22, an electromagnetic armature 23, a large-hole air release valve 24, a through hole I25, a protrusion 26 and an upper cavity 27.

The utility model relates to a multistage high-pressure gas switch of piston, including valve body 1, through the valve gap 3 of bolt fixed mounting in 1 top of valve body, slide and set up case 2 in valve body 1, case 2 and valve body 1's inner wall seal cooperation, the upper end of case 2 is equipped with the valve pocket, valve gap 3 on be connected with the intercommunication on valve pocket 4 and the control on the multistage gas control switch of valve pocket pressure release.

The working principle is as follows: the utility model discloses a multistage gas control switch carries out pressure release control to last valve chamber 4, and in the time of the pressure release, the gas of going up in the valve chamber 4 falls through multistage gas control switch, and case 2 upwards slides, and the gas outlet of 1 lower extreme of valve body is opened, makes gas holder and launching tube be linked together, and when multistage gas control switch made last valve chamber 4 stop the pressure release, case 2 moves down, makes the gas outlet of 1 lower extreme of valve body close, makes gas holder and launching tube separate.

In this embodiment, the valve body 1 is longitudinally provided with a vent passage 5, the vent passage 5 is in a step shape, the diameter of the middle vent passage is minimum, the diameter of the lower vent passage is maximum, the diameter of the upper vent passage is smaller than that of the lower vent passage, but the diameter of the upper vent passage is larger than that of the middle vent passage, the side wall of the valve body 1 of the upper vent passage is transversely provided with an air inlet 6, one end of the air inlet 6 is communicated with an air storage tank of the launching device, the valve core 2 is in a step shaft, the diameter of the upper valve core is larger, the diameter of the lower valve core is smaller, the valve core 2 is arranged in the upper vent passage in a sliding manner, the inner walls of the valve bodies corresponding to the upper and upper vent passages are in sealing fit, a gap is arranged between the inner walls of the valve bodies corresponding to the lower and upper vent passages, and a gap between the other end of the air inlet 6 and the inner walls of the valve bodies corresponding to the upper vent passage is communicated, the upper end of the valve core 2 is provided with a first blind hole 11, a first elastic part for resetting the valve core 2 is arranged between the first blind hole 11 and the valve cover, the first elastic part is always in a compression state, the first elastic part is a first spring 12, the first spring 12 is always in the compression state, the elastic force of the first spring 12 to a piston is far smaller than the force of air pressure to the valve core, the side wall of the lower valve core is transversely provided with a first through hole 25, the first through hole 25 is communicated with the first blind hole 11, the first through hole 25 and the gap between the lower valve core and the inner wall of the corresponding valve body of the upper vent channel are also communicated, meanwhile, the cross-sectional area of the first blind hole 11 is larger than the area difference of the cross-sectional area of the upper valve core minus the cross-sectional area of the lower valve core, a circle of convex edge 7 which protrudes upwards is arranged on the step surface of the upper end of the middle vent channel, the lower end surface of the valve core is provided with a groove 8, and a first sealing gasket 9 is arranged in the groove 8 in a matching way, a pressing plate 10 used for fixing the first sealing gasket 9 is arranged below the first sealing gasket 9, the pressing plate 10 fixedly installs the first sealing gasket 9 on the lower end face of the valve core 2 through bolts, the convex edge 7 is used for separating the lower end air passage and the air inlet 6 when being hermetically matched with the lower end of the valve core 2, and the cross section area of the convex edge 7 is arc-shaped.

The outer wall of the upper end valve core is provided with three grooves, guide belts are arranged in the grooves on the upper side and the grooves on the lower side in a matching mode, a sealing ring is arranged in the middle groove in a matching mode to play a role in gas sealing, and the sealing ring enables the sealing matching effect of the inner wall of the valve body corresponding to the upper end valve core and the upper end air duct to be better.

In this embodiment, the multi-stage gas control switch includes a connector 13 fixedly connected to the upper end of the valve cap 3 through a bolt, a piston 14 slidably disposed in the connector 13 in a matching manner, and an electromagnetic valve 15 disposed on the upper end of the connector 13, a vent hole 16 is disposed on the valve cap 3, the lower end of the vent hole 16 is communicated with the upper valve cavity 4, a piston hole 17 is disposed at the lower end of the connector 13, the piston 14 slidably disposed in the piston hole 17 in a matching manner, the outer wall of the piston 14 is in sealing fit with the inner wall of the connector 13, the piston 14 is stepped, the diameter of the piston at the upper end is greater than that of the piston at the lower end, the outer wall of the piston at the upper end is in sealing fit with the inner wall of the connector 13, a gap is formed between the outer wall of the piston at the lower end and the inner wall of the connector 13, a protrusion 26 is disposed at the upper end of the valve cap 3, a large-hole air release valve 24 is mounted on the valve cap 3, and the piston 14 controls the communication between the large-hole air release valve 24 and the vent hole 16 on the valve cap, the valve cover 3 is provided with a hole which is vertically and downwards arranged in the middle of the protrusion and communicated with the large-hole air release valve 24, when the protrusion 26 is tightly matched with the lower-end piston, the large-hole air release valve 24 is not communicated with the vent hole 16, when the piston 14 moves upwards, the protrusion 26 is separated from the lower-end piston, the large-hole air release valve 24 is communicated with the vent hole 16, the upper end of the piston 17 is provided with a step-shaped blind hole II 19, an elastic component II used for resetting the piston 14 is arranged between the step-shaped blind hole II 19 and the upper end of the connecting body 13, the elastic component II is always in a compressed state and is a spring II 22, the lower end of the spring II 22 is propped against the step of the step-shaped blind hole II 19, the spring II 22 is always in a compressed state, the downward elastic force of the spring II relative to the piston 14 is far smaller than the acting force of air pressure on the piston 14, the cross-sectional area of the step-shaped blind hole II 19 is larger than the area obtained by subtracting the cross-sectional area of the piston at the lower-end from the cross-sectional area of the piston at the upper-end, the lower end of the piston 14 is provided with an L-shaped air hole 18, the lower end of the L-shaped air hole 18 is communicated with the upper valve cavity 4 through an air vent 16, the upper end of the L-shaped air hole 18 is communicated with the step-shaped blind hole II 19, the upper end of the connecting body 13 is longitudinally provided with an air outlet hole I20 and an air outlet hole II 21, the lower end of the air outlet hole I20 is communicated with the step-shaped blind hole II 19, the upper end of the connecting body 13 is provided with an upper cavity 27, the upper end of the air outlet hole I20 is communicated with the upper cavity 27, the electromagnetic valve 15 is installed on the upper cavity 27, an electromagnetic armature 23 of the electromagnetic valve 15 is used for controlling the connection between the air outlet hole II 21 and the upper cavity 27, when the electromagnetic valve 15 is opened, the electromagnetic armature 23 moves upwards, the air outlet hole II 21 is communicated with the air outlet hole I20 through the upper cavity 27, and the other end of the air outlet hole II 21 is communicated with the atmosphere.

The working process is as follows:

when the electromagnetic valve is opened, the electromagnetic armature 23 moves upwards, the large-hole air release valve 24 is opened simultaneously, the second air outlet hole 21 is communicated with the first air outlet hole 20 through the upper cavity 27, the other end of the second air outlet hole 21 is communicated with the atmosphere, the first air outlet hole 20 and the step-shaped blind hole 19 are also communicated with the atmosphere, gas in the step-shaped blind hole 19 is discharged, the piston only receives upward acting force of air pressure in the cavity at the lower end of the piston on the piston, the piston rapidly moves upwards under the acting force of the air pressure in the cavity at the lower end, the piston at the lower end is separated from the protrusion 26, the vent hole 16 is communicated with the large-hole air release valve 24, the gas in the upper valve cavity 4 is rapidly communicated with the large-hole air release valve 24 through the hole vertically arranged downwards in the middle of the protrusion of the valve cover 3, the gas in the upper valve cavity 4 is rapidly discharged through the large-hole air release valve 24, and meanwhile, the gas in the upper valve cavity 4 sequentially passes through the vent hole 16 arranged on the valve cover, The L-shaped air hole 18, the stepped blind hole II 19, the air outlet hole I20, the upper cavity 27 and the air outlet hole II 21 on the piston are exhausted to the atmosphere, the air pressure in the upper valve cavity 4 and the blind hole I11 is relieved, the valve core 2 only bears upward force of the air pressure in the cavity at the lower end of the valve core to the valve core 2 at this time, the force is far greater than downward elastic force of the spring I12 to the valve core 2, the valve core 2 moves upwards rapidly, the lower end valve core is separated from the convex edge 7, the lower end air channel is communicated with the air inlet 6, and air in the air storage tank is conveyed into the launching cylinder.

When the emission is finished, when the electromagnetic valve 15 is closed, the large-hole air release valve 24 is closed, the electromagnetic armature is positioned below, at the moment, the air inlet 6 and the cavity between the lower end valve core and the inner wall of the corresponding valve body of the upper end air passage are communicated with the atmosphere, the valve core 2 is not forced upwards by the start in the gap between the lower end valve core and the inner wall of the corresponding valve body of the upper end air passage to the valve core 2 any more, at the moment, the elastic force of the spring I12 enables the valve core 2 to move downwards to abut against the convex edge 7, so that the lower end air passage is not communicated with the air inlet 6, the gas in the gas storage tank is not conveyed into the emission cylinder, the gas in the gas storage tank enters the blind hole I11 through the air inlet 6, the gap between the lower end valve core and the inner wall of the corresponding valve body of the upper end air passage and the through hole I25, and the gas pressure in the cavity at the upper end of the valve core is equal to the gas pressure in the cavity at the lower end cavity, but the force bearing area of the upper end valve core is larger than that of the lower end valve core, so that the downward force of the air pressure to the valve core is larger than the upward force of the air pressure to the valve core, the valve core 2 is totally subjected to a downward force of the air pressure to the valve core, the downward elastic force of the first spring 12 is added to enable the lower end valve core to tightly abut against the convex edge 7, the electromagnetic armature is positioned below the electromagnetic armature, one end of the second air outlet 21 is blocked, the first air outlet 20 and the second air outlet 21 are not communicated, at the moment, the air in the first air outlet 20 is not discharged to the atmosphere, the air pressure in the cavity at the upper end of the piston is equal to the air pressure in the cavity at the lower end of the piston, at the moment, the force bearing area at the upper end of the piston is equal to the force bearing area at the lower end of the piston, at the moment, under the downward elastic force of the two pairs of springs 14, the piston moves downwards until the piston abuts against the bulge 26, the air release valve 24 is not communicated with the vent 16, and as the air pressure in the cavity at the upper end of the piston is equal to the lower end of the cavity, however, after the lower end of the piston abuts the projection 26, the force area of the upper end of the piston is greater than the force area of the lower end of the piston, so that the downward force of the air pressure on the piston is greater than the upward force of the air pressure on the piston, and the piston is generally forced downward by the air pressure on the piston, so that the piston abuts the projection 26 tightly.

Install 16 simultaneously amortization mechanism and dustproof mechanism on the valve gap 3 big hole snuffle valve 24, big hole snuffle valve 24 has the effect of amortization simultaneously, can the noise abatement, and the noise prevention is too big, prevents simultaneously that the dust from getting into in the air flue, avoids the air flue to block up or the gas flow is unsmooth.

The utility model discloses a solenoid valve 15 and case 2 and piston 14 form tertiary buffering, and when atmospheric pressure in the gas holder reached 20MPa to 25MPa, the multistage high-pressure gas switch of piston can be quick accurate control gas receiver and the intercommunication and the wall of launch canister, open in the twinkling of an eye, and reaction rate is very fast, and the multistage high-pressure gas switch of piston can effectual control to the transmission of the bullet of putting out a fire, great improvement emitter's transmission control.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a multistage high-pressure gas switch of piston, includes the valve body, matches the case of slip setting in the valve body, the fixed valve gap that sets up in the valve body top, its characterized in that: the valve core is in sealing fit with the inner wall of the valve body, an upper valve cavity is arranged at the upper end of the valve core, and a multi-stage gas control switch which is communicated with the upper valve cavity and controls the upper valve cavity to release pressure is connected to the valve cover.

2. A piston-type multi-stage high-pressure gas switch according to claim 1, wherein: the valve body in set up and vertically link up and be provided with the air vent, the lateral wall in the middle of the valve body on be provided with the air inlet that is linked together with the air vent, the case match to slide and set up in the air vent, the air vent be the echelonment, the diameter of upper end air vent and lower extreme air vent is great, the diameter of middle air vent is less, the case match to slide and set up in the upper end air vent, the air inlet set up on the lateral wall of the valve body at upper end air vent place.

3. A piston-type multi-stage high-pressure gas switch according to claim 2, wherein: the ladder surface of the upper end of the middle air duct is provided with an annular convex edge protruding upwards, and the convex edge is used for separating the lower end air duct from the air inlet when being in airtight fit with the lower end of the valve core.

4. A piston-type multi-stage high-pressure gas switch according to claim 3, wherein: the lower end face of the valve core is provided with a groove, a first sealing gasket is arranged in the groove in a matching mode, a pressing plate used for fixing the first sealing gasket is arranged below the first sealing gasket, and the first sealing gasket and the convex edge are matched in a sealing mode to separate a lower end air passage and an air inlet.

5. A piston-type multi-stage high-pressure gas switch according to claim 1, wherein: the valve core is a stepped shaft, the diameter of the upper end valve core is larger, the diameter of the lower end valve core is smaller, a gap is formed between the lower end valve core and the inner wall of the upper end air channel, the upper end of the valve core is provided with a first blind hole, a first elastic component for resetting the valve core is arranged between the first blind hole and the valve cover, the side wall of the lower end valve core is transversely provided with a first through hole, and the first through hole is communicated with the first blind hole.

6. A piston-type multi-stage high-pressure gas switch according to claim 5, wherein: the first elastic component is a first spring.

7. A piston-type multi-stage high-pressure gas switch according to claim 1, wherein: multistage gas control switch include with valve gap upper end fixed connection's connector, match and slide the piston that sets up in the connector and set up the solenoid valve in the connector upper end, the valve gap on be provided with the air vent, air vent and last valve chamber be linked together, the valve gap on install the macropore release valve, the intercommunication between piston control macropore release valve and the air vent.

8. A piston-type multi-stage high-pressure gas switch according to claim 7, wherein: the lower end of the connecting body is provided with a piston hole, the piston is arranged in the piston hole in a matching sliding way, a second stepped blind hole is formed in the upper end of the piston, a second elastic component for resetting the piston is arranged between the second stepped blind hole and the upper end of the connecting body, the lower end of the piston is provided with an L-shaped air hole, the lower end of the L-shaped air hole is communicated with an upper end air passage, the L-shaped air holes are communicated with the step-shaped blind holes, the upper end of the connecting body is longitudinally provided with a first air outlet and a second air outlet, the first air outlet hole is communicated with the step-shaped blind hole, the electromagnetic armature of the electromagnetic valve is used for controlling the opening and closing of the second air outlet hole, when the second air outlet is opened, the first air outlet is communicated with the second air outlet, and the upper end of the valve cover 3 is provided with a circle of protrusions 26.

9. A piston-type multi-stage high-pressure gas switch according to claim 8, wherein: the second elastic component is a second spring.

10. A piston-type multi-stage high-pressure gas switch according to claim 1, wherein: and a circle of sealing ring is arranged between the valve core and the valve body in a matching way.