Opposite punching piece and pressure reducing valve with same

Abstract

The invention relates to an opposite flushing part and a pressure reducing valve with the opposite flushing part, and belongs to the technical field of pressure reducing valves. The opposite flushing part comprises a column body, an opposite flushing cavity is formed in the column body, and a plurality of inflow channels and a plurality of outflow channels are formed in the outer wall of the column body in the radial direction of the column body; the multiple inflow channels and the multiple outflow channels are distributed in the circumferential direction of the column body at intervals in a staggered mode and communicate with the opposite flushing cavity. A plurality of inflow channels and a plurality of outflow channels are arranged on the outer wall of the column body in the circumferential direction at intervals in a staggered mode, and then the inflow channels and the outflow channels are communicated with the opposite flushing cavity in the column body. When the high-pressure gas or the high-pressure liquid flows out from the plurality of flow outlet channels, the pressure of the high-pressure gas or the high-pressure liquid is greatly reduced, the high-pressure gas or the high-pressure liquid is prevented from impacting a hedging piece at high pressure, and the service life of the hedging piece is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure reducing valves, and in particular to a pressure reducing valve. Background Art

[0002] A pressure reducing valve is a valve that automatically reduces the working pressure of a pipeline. It can accurately and stably reduce the higher gas or liquid pressure (such as 35 / 70MPa) of the pipeline before the valve to the required level (such as 0.5 to 1MPa) of the pipeline after the valve.

[0003] At present, the commonly used pressure reduction methods are generally throttling pressure reduction, hedging pressure reduction or expansion pressure reduction, which is actually to cause a certain amount of energy loss in the process of pressure reduction. However, ① in the process of pressure reduction, a large amount of energy is absorbed by the internal structure of the valve, and the internal structure bears a large pressure and impact, resulting in a significant reduction in the service life of the pressure reducing valve; ② due to the complexity of the working conditions (high temperature, low temperature, high pressure, supersonic speed, etc.), the unstable nature of gas or liquid (part of the gas or liquid undergoes phase change and compression under high temperature and high pressure, which is prone to explosion) and the irregular operation of workers, the pressure reducing valve may not be able to reach the target pressure after reducing the pressure of high-pressure gas or high-pressure liquid, and the pressure after pressure reduction will still be greater than the rated outlet pressure; ③ insufficient pressure reduction capacity; ④ insufficient pressure stabilization effect, it is difficult to achieve accurate pressure reduction under high pressure and maintain the stability of outlet pressure and flow.

[0004] Therefore, how to design a pressure reducing component with strong pressure reducing capability, high pressure stabilizing capability, long service life and high safety factor and a pressure reducing valve having the same are problems that technical personnel in this field need to solve urgently. Summary of the invention

[0005] The invention provides a pressure reducing valve, which solves the technical problems of the existing pressure reducing valves, such as short service life, insufficient pressure reducing capacity, poor pressure stabilizing effect and low safety factor.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: a counter-impact part, comprising: a column, a counter-impact cavity is provided inside the column, and a plurality of inlet channels and a plurality of outlet channels are provided on its outer wall along its radial direction, the plurality of inlet channels and the plurality of outlet channels are staggeredly distributed along the circumferential intervals of the column and are all connected to the counter-impact cavity, so that multiple streams of high-pressure gas or multiple streams of high-pressure liquid rushing in from the multiple inlet channels at the same time can be focused in the counter-impact cavity to complete the counter-impact decompression.

[0007] The beneficial effects of the present invention are: innovatively designed impact parts, firstly, multiple inlet channels and multiple outlet channels are staggered along the circumferential intervals on the outer wall of the column, and then the multiple inlet channels and the multiple outlet channels are connected to the impact cavity inside the column. Since the multiple inlet channels and the multiple outlet channels are arranged along the radial direction of the machine column, when multiple streams of high-pressure gas or multiple streams of high-pressure liquid flow in from the multiple inlet channels at the same time, they will first be impacted and decompressed in the impact cavity, and then flow out from the multiple outlet channels, thereby greatly reducing the pressure of the high-pressure gas or high-pressure liquid, preventing the high-pressure gas or high-pressure liquid from high-pressure impacting the impact parts, and extending the service life of the impact parts.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the counter-pressure chamber, the plurality of inlet channels and the plurality of outlet channels form a counter-pressure unit, the plurality of the counter-pressure units are distributed at intervals along the axial direction of the column, the plurality of outlet channels and the plurality of inlet channels of the adjacent counter-pressure units are arranged opposite to each other, the outer wall of the column is provided with a plurality of connecting grooves, the outlets of the adjacent and opposite outflow channels and the inlets of the inflow channels are both arranged in the same connecting groove, so as to connect the adjacent and opposite outflow channels and the inlet channels after the column is inserted into the inlet channel in the valve body of the pressure reducing valve.

[0010] The further beneficial effects of adopting the above are:

[0011] 1. Designing multiple impact units distributed along the axial direction on the column can reduce the pressure of high-pressure gas or high-pressure liquid step by step and multiple times, greatly reducing the impact force of high-pressure gas or high-pressure liquid on the column;

[0012] 2. A further beneficial effect of the above method is that the relatively connected outflow channel and inflow channel are arranged at the bottom of the same connecting groove, so that the relatively connected inflow channel and outflow channel can be easily connected to each other.

[0013] Furthermore, a plurality of inlet connecting channels are opened along the axial direction at the first end of the column, and a plurality of outflow connecting channels are opened along the axial direction at the second end. The plurality of inlet connecting channels are respectively connected one by one with the plurality of adjacent inlet channels, so that after the column is inserted into the inlet channel, the axially flowing high-pressure gas or high-pressure liquid is converted into radial flow, and the plurality of connecting outflow channels are respectively connected one by one with the plurality of adjacent outflow channels, so that after the column is inserted into the inlet channel, the radially flowing high-pressure gas or high-pressure liquid is converted into axial flow.

[0014] A further beneficial effect of adopting the above is: by respectively arranging multiple connecting inlet channels and multiple connecting outflow channels at both ends of the column, since the multiple connecting inlet channels are relatively connected with the multiple adjacent inlet channels, and since the multiple connecting outflow channels are relatively connected with the multiple adjacent outflow channels, after the column is inserted into the inlet channel, the axial flow of high-pressure gas or high-pressure liquid can be converted into radial flow first, which is convenient for offset, and then the radial flow of high-pressure gas or high-pressure liquid can be converted into axial flow, which is convenient for subsequent flow.

[0015] Furthermore, the diameters of the plurality of outflow channels and the diameters of the plurality of inflow channels increase sequentially from the direction close to the counter-entry cavity to the direction away from the counter-entry cavity.

[0016] A further beneficial effect of adopting the above method is that the diameters of the multiple outflow channels and the diameters of the multiple inflow channels are successively increased from close to the counter-pressure cavity to away from the counter-pressure cavity, which can increase the flow rate of the high-pressure gas or high-pressure liquid and enhance the counter-pressure effect of the high-pressure gas or high-pressure liquid.

[0017] In addition, a pressure reducing valve is provided, comprising: the valve body, the pressure reducing assembly and the two impact members, the valve body is provided with a valve cavity inside and the outer wall thereof is provided with the inlet channel and the pressure reducing valve hole, the inlet channel and the pressure reducing valve hole are both communicated with the valve cavity and a pressure reducing outlet hole is provided on the hole wall of the pressure reducing valve hole; the two columns are respectively placed in the inlet channel and the pressure reducing outlet hole; the pressure reducing assembly is detachably connected to the pressure reducing valve hole, and can discharge high-pressure gas or high-pressure liquid in the valve cavity that is higher than a predetermined pressure from the pressure reducing outlet hole.

[0018] A further beneficial effect of adopting the above method is that by placing multiple columns in the inlet channel and the pressure reducing outlet hole respectively, the impact force of the high-pressure gas or high-pressure liquid can be greatly reduced, avoiding the high-pressure gas or high-pressure liquid from impacting the valve body, the impact piece, the pressure reducing valve cover, the pressure reducing spring or the pressure reducing valve core, thereby extending the service life of the pressure reducing valve.

[0019] Furthermore, the pressure reducing assembly includes a pressure reducing valve cover, a pressure reducing spring and a pressure reducing valve core, the pressure reducing valve cover is detachably connected to the pressure reducing valve hole; the pressure reducing spring is placed in the pressure reducing valve hole and one end of the pressure reducing spring is in contact with the pressure reducing valve cover; the pressure reducing valve core is inserted into the valve cavity and seals and slides in the pressure reducing valve hole; the other end of the pressure reducing spring is in contact with the pressure reducing valve core, so as to push the pressure reducing valve core to slide under the impact of the high-pressure gas or high-pressure liquid in the valve cavity, squeeze and compress the pressure reducing spring, make the valve cavity communicate with the pressure reducing outlet hole, and complete the pressure reduction and discharge of the high-pressure gas or high-pressure liquid in the valve cavity.

[0020] A further beneficial effect of adopting the above method is that when the pressure of the high-pressure gas or high-pressure liquid in the valve cavity is too high, it will push the pressure reducing valve core to slide, squeeze the compression spring, and cause the pressure reducing valve core to slide away from the pressure reducing outlet hole, connecting the valve cavity and the pressure reducing outlet hole, thereby completing the pressure reducing discharge of the high-pressure gas or high-pressure liquid.

[0021] Further, the pressure reducing valve hole is divided into a pressure reducing hole section and a pressure stabilizing hole section in sequence from the direction close to the valve cavity to the direction away from the valve cavity, the pressure reducing hole section is communicated with the valve cavity, and the pressure reducing outlet hole is arranged on the hole wall of the pressure stabilizing hole section; the pressure reducing valve core comprises a core block, a valve stem and a valve plate, the core block is sealed and fixed in the pressure reducing hole section and a through hole is arranged in the middle thereof; the valve stem is penetrated in the valve cavity and a gap passes through the through hole, so as to define a pressure reducing channel between the outer wall of the valve stem and the inner wall of the through hole; the valve plate is sealed and slides in the pressure stabilizing hole section and one side of the plate surface thereof can contact the core block; the other end of the pressure reducing spring contacts the other side of the plate surface of the valve plate, so as to push the valve plate to slide under the impact of the high-pressure gas or high-pressure liquid in the valve cavity, squeeze and compress the pressure reducing spring, so that the valve plate is away from the core block to open the through hole, and complete the pressure reducing and discharge of the high-pressure gas or high-pressure liquid in the valve cavity.

[0022] The further beneficial effects of adopting the above are:

[0023] 1. The high-pressure gas or high-pressure liquid that flows into the valve cavity through the inlet channel will reduce its pressure again after passing through the pressure-reducing channel.

[0024] 2. When the pressure of the high-pressure gas or high-pressure liquid flowing out through the pressure reducing channel is still too high, the valve plate will be pushed to slide and squeeze the compression spring, so that the valve plate is away from the through hole of the core block, connecting the valve cavity, the pressure reducing channel, the through hole and the pressure reducing outlet hole, and completing the pressure reducing discharge of the high-pressure gas or high-pressure liquid.

[0025] Furthermore, the valve plate includes a support ring, a push rod and a spring seat, the support ring seal slides in the pressure reducing hole section; the push rod seal slides in the support ring and one end of the push rod can contact the core block; the spring seat is fixed to the other end of the push rod; the other end of the pressure reducing spring contacts the spring seat, so as to push the push rod to slide under the impact of the high-pressure gas or high-pressure liquid in the valve cavity, squeeze and compress the pressure reducing spring, and make the push rod move away from the core block to open the through hole, thereby completing the pressure reduction and discharge of the high-pressure gas or high-pressure liquid in the valve cavity.

[0026] Furthermore, it also includes a pressure relief assembly, wherein the valve body is provided with a pressure relief valve hole connected to the valve cavity and the hole wall of the pressure relief valve hole is provided with a pressure relief outlet hole; the pressure relief assembly is detachably connected to the pressure relief valve hole and can discharge high-pressure gas or high-pressure liquid in the valve cavity that is higher than a predetermined pressure from the pressure relief outlet hole.

[0027] Furthermore, the pressure relief assembly includes a pressure relief valve cover, a pressure relief spring and a pressure relief valve core, the pressure relief valve cover is detachably connected to the pressure relief valve hole; the pressure relief spring is placed in the pressure relief valve hole and one end of the pressure relief spring is in contact with the pressure relief valve cover; the pressure relief valve core seals and slides in the pressure relief valve hole; the other end of the pressure relief spring is in contact with the pressure relief valve core, so as to push the pressure relief valve core to slide under the impact of the high-pressure gas after the impact or the high-pressure liquid after the impact, squeeze and compress the pressure relief spring, so that the valve cavity is connected with the pressure relief outlet hole, and the pressure relief and discharge of the high-pressure gas or high-pressure liquid in the valve cavity are completed.

[0028] A further beneficial effect of adopting the above method is that when the pressure in the valve cavity is too high, the pressure relief valve core can be pushed to slide and squeeze the compressed pressure relief spring, connecting the valve cavity and the pressure relief outlet hole, completing the pressure relief and discharge of high-pressure gas or high-pressure liquid, avoiding excessive pressure in the valve cavity and damaging the pressure reducing valve, thereby improving the safety of the use of the pressure reducing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural schematic diagram of a pressure reducing valve of the present invention;

[0030] Figure 2 It is a front view structural schematic diagram of a pressure reducing valve of the present invention;

[0031] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure in the AA direction;

[0032] Figure 4 for Figure 3 A schematic diagram of the local enlarged structure at point B;

[0033] Figure 5 It is a side view structural schematic diagram of a pressure reducing valve of the present invention;

[0034] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure at CC;

[0035] Figure 7 It is a three-dimensional structural schematic diagram of a counter-punch component of the present invention;

[0036] Figure 8 The figure is a schematic diagram of the internal structure of a punching piece of the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 1. Column, 11. Counter-pressure chamber, 12. Inlet channel, 13. Outlet channel, 14. Connecting groove, 15. Connecting inlet channel, 16. Connecting outlet channel, 2. Valve body, 21. Valve chamber, 22. Inlet channel, 23. Pressure reducing valve hole, 231. Pressure reducing hole section, 232. Pressure stabilizing hole section, 24. Pressure reducing outlet hole, 25. Pressure relief valve hole, 26. Pressure relief outlet hole, 3. Pressure reducing assembly, 31. Pressure reducing valve cover, 32. Pressure reducing spring, 33. Pressure reducing valve core, 331. Core block, 332. Valve stem, 333. Valve plate, 3331. Support ring, 3332. Push rod, 3333. Spring seat, 4. Pressure relief assembly, 41. Pressure relief valve cover, 42. Pressure relief spring, 43. Pressure relief valve core. DETAILED DESCRIPTION

[0039] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0040] like Figure 7 and Figure 8 As shown, a counter-impact part comprises: a column 1, an interior of which is provided with a counter-impact cavity 11 and an outer wall of which is provided with a plurality of inlet channels 12 and a plurality of outlet channels 13 arranged along its radial direction, the plurality of inlet channels 12 and the plurality of outlet channels 13 are staggeredly distributed along the circumferential intervals of the column 1 and are all connected with the counter-impact cavity 11, so that multiple streams of high-pressure gas or multiple streams of high-pressure liquid rushing in from the multiple inlet channels 12 at the same time are focused in the counter-impact cavity 11 to complete the counter-impact decompression.

[0041] like Figure 7 and Figure 8 As shown, in some specific embodiments, the hedging cavity 11, multiple inlet channels 12 and multiple outflow channels 13 form a hedging unit, and the hedging units are multiple and distributed along the axial direction of the column 1. The multiple outflow channels 13 and the multiple inflow channels 12 of the adjacent hedging units are arranged one by one. A plurality of connecting grooves 13 are provided on the outer wall of the column 1, and the outlets of the adjacent and opposite outflow channels 13 and the inlets of the inflow channels 12 are correspondingly located in the same connecting groove 13, so that after the column 1 is inserted into the inlet channel 22 in the valve body 2 of the pressure reducing valve, the adjacent and opposite outflow channels 13 and inlet channels 12 are connected.

[0042] like Figure 7 and Figure 8As shown, in some specific embodiments, a first end of the column 1 is provided with a plurality of inlet connecting channels 15 along its axial direction, and a second end is provided with a plurality of outflow connecting channels 16 along its axial direction. The plurality of inlet connecting channels 15 are respectively connected one by one with the adjacent plurality of inlet channels 12, so that after the column 1 is inserted into the inlet channel 22, the axial flow of high-pressure gas or high-pressure liquid is converted into radial flow. The plurality of connecting outflow channels 16 are respectively connected one by one with the adjacent plurality of outflow channels 13, so that after the column 1 is inserted into the inlet channel 22, the radial flow of high-pressure gas or high-pressure liquid is converted into axial flow.

[0043] like Figure 7 and Figure 8 As shown, in some specific embodiments, the diameters of the multiple outflow channels 13 and the diameters of the multiple inflow channels 12 increase sequentially from the direction close to the counter-entrapment cavity 11 to the direction away from the counter-entrapment cavity 11 .

[0044] In addition, if Figure 1 and Figure 2 As shown, a pressure reducing valve is provided, comprising: a valve body 2, a pressure reducing assembly 3 and two counter-acting parts, wherein a valve cavity 21 is provided inside the valve body 2 and an inlet channel 22 and a pressure reducing valve hole 23 are provided on the outer wall thereof, the inlet channel 22 and the pressure reducing valve hole 23 are both communicated with the valve cavity 21 and a pressure reducing outlet hole 24 is provided on the hole wall of the pressure reducing valve hole 23; two cylinders 1 are respectively disposed in the inlet channel 22 and the pressure reducing outlet hole 24; the pressure reducing assembly 3 is detachably connected to the pressure reducing valve hole 23, and can discharge high-pressure gas or high-pressure liquid in the valve cavity 21 that is higher than a predetermined pressure from the pressure reducing outlet hole 24.

[0045] like Figure 3 and Figure 4 As shown, in some specific embodiments, the pressure reducing assembly 3 may include a pressure reducing valve cover 31, a pressure reducing spring 32 and a pressure reducing valve core 33, the pressure reducing valve cover 31 is detachably connected to the pressure reducing valve hole 23; the pressure reducing spring 32 is placed in the pressure reducing valve hole 23 and one end of the pressure reducing spring 32 is in contact with the pressure reducing valve cover 31; the pressure reducing valve core 33 is penetrated through the valve cavity 21 and seals and slides in the pressure reducing valve hole 23; the other end of the pressure reducing spring 32 is in contact with the pressure reducing valve core 33, so that under the impact of the high-pressure gas or high-pressure liquid in the valve cavity 21, the pressure reducing valve core 33 is pushed to slide, squeeze and compress the pressure reducing spring 32, so that the valve cavity 21 is connected to the pressure reducing outlet hole 24, and the pressure reducing and discharge of the high-pressure gas or high-pressure liquid in the valve cavity 21 is completed.

[0046] like Figure 3 and Figure 4As shown, in some specific embodiments, the pressure reducing valve hole 23 is divided into a pressure reducing hole section 231 and a pressure stabilizing hole section 232 in a direction from close to the valve cavity 21 to away from the valve cavity 21, the pressure reducing hole section 231 is communicated with the valve cavity 21, and the pressure reducing outlet hole 24 is arranged on the hole wall of the pressure stabilizing hole section 232; the pressure reducing valve core 33 includes a core block 331, a valve stem 332 and a valve plate 333, the core block 331 is sealed and fixed in the pressure reducing hole section 231 and a through hole is arranged in the middle thereof; the valve stem 332 is penetrated in the valve cavity 21 and a gap passes through the through hole, A pressure reducing passage is defined between the outer wall of the valve stem 332 and the inner wall of the through hole; the valve plate 333 slides in a sealed manner in the pressure stabilizing hole section 232 and one side surface of the valve plate 333 can contact the core block 331; the other end of the pressure reducing spring 32 contacts the other side surface of the valve plate 333, so that under the impact of the high-pressure gas or high-pressure liquid in the valve cavity 21, the valve plate 333 is pushed to slide, the pressure reducing spring 32 is squeezed and compressed, and the valve plate 333 is moved away from the core block 331 to open the through hole, thereby completing the pressure reducing and discharge of the high-pressure gas or high-pressure liquid in the valve cavity 21.

[0047] like Figure 3 and Figure 4 As shown, in some specific embodiments, the valve plate 333 may include a support ring 3331, a push rod 3332 and a spring seat 3333, the support ring 3331 sealingly slides in the pressure reducing hole section 231; the push rod 3332 sealingly slides in the support ring 3331 and one end of it can contact the core block 331; the spring seat 3333 is fixed to the other end of the push rod 3332; the other end of the pressure reducing spring 32 contacts the spring seat 3333, so that under the impact of the high-pressure gas or high-pressure liquid in the valve cavity 21, the push rod 3332 is pushed to slide, squeeze and compress the pressure reducing spring 32, and the push rod 3332 is moved away from the core block 331 to open the through hole, thereby completing the pressure reduction and discharge of the high-pressure gas or high-pressure liquid in the valve cavity 21.

[0048] like Figure 5 and Figure 6 As shown, in some specific embodiments, a pressure relief assembly 4 may also be included, the valve body 2 is provided with a pressure relief valve hole 25 connected to the valve cavity 21, and the hole wall of the pressure relief valve hole 25 is provided with a pressure relief outlet hole 26; the pressure relief assembly 4 is detachably connected to the pressure relief valve hole 25 and can discharge high-pressure gas or high-pressure liquid in the valve cavity 21 that is higher than a predetermined pressure from the pressure relief outlet hole 26.

[0049] like Figure 5 and Figure 6As shown, in some specific embodiments, the pressure relief assembly 4 includes a pressure relief valve cover 41, a pressure relief spring 42 and a pressure relief valve core 43, the pressure relief valve cover 41 is detachably connected to the pressure relief valve hole 25; the pressure relief spring 42 is placed in the pressure relief valve hole 25 and one end of the pressure relief spring 42 is in contact with the pressure relief valve cover 41; the pressure relief valve core 43 seals and slides in the pressure relief valve hole 25; the other end of the pressure relief spring 42 is in contact with the pressure relief valve core 43, so that under the impact of the high-pressure gas after the impact or the high-pressure liquid after the impact, the pressure relief valve core 43 is pushed to slide, squeeze and compress the pressure relief spring 42, so that the valve cavity 21 is connected with the pressure relief outlet hole 26, and the pressure relief and discharge of the high-pressure gas or high-pressure liquid in the valve cavity 21 is completed.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A counter-attacking component, characterized in that: include: A column (1), wherein a counter-pressure chamber (11) is provided inside the column (1) and a plurality of inlet channels (12) and a plurality of outlet channels (13) are provided on the outer wall thereof and are arranged along the radial direction thereof; the plurality of inlet channels (12) and the plurality of outlet channels (13) are staggeredly distributed along the circumference of the column (1) and are all connected to the counter-pressure chamber (11), so that a plurality of high-pressure gases or a plurality of high-pressure liquids rushing in simultaneously from the plurality of inlet channels (12) are focused in the counter-pressure chamber (11) to complete counter-pressure reduction.

2. A counter-punch according to claim 1, characterized in that: The counter-pressure chamber (11), the plurality of inlet channels (12) and the plurality of outlet channels (13) form a counter-pressure unit. The counter-pressure units are multiple and spaced apart along the axial direction of the column (1). The plurality of outlet channels (13) and the plurality of inlet channels (12) of the counter-pressure units adjacent to each other are arranged opposite to each other. The outer wall of the column (1) is provided with a plurality of connecting grooves (13). The outlets of the adjacent and opposite outlet channels (13) and the inlets of the inlet channels (12) are correspondingly located in the same connecting groove (13), so that after the column (1) is inserted into the inlet channel (22) in the valve body (2) of the pressure reducing valve, the adjacent and opposite outlet channels (13) and the inlet channels (12) are connected.

3. A counter-punch according to claim 2, characterized in that: The first end of the column (1) is provided with a plurality of inlet connection channels (15) along its axial direction, and the second end is provided with a plurality of outlet connection channels (16) along its axial direction. The plurality of inlet connection channels (15) are respectively connected one by one with the plurality of adjacent inlet channels (12) so as to convert the axial flow of high-pressure gas or high-pressure liquid into radial flow after the column (1) is inserted into the inlet channel (22). The plurality of outlet connection channels (16) are respectively connected one by one with the plurality of adjacent outlet channels (13) so as to convert the radial flow of high-pressure gas or high-pressure liquid into axial flow after the column (1) is inserted into the inlet channel (22).

4. A counter-punch according to claim 2, characterized in that: The diameters of the plurality of outflow channels (13) and the diameters of the plurality of inflow channels (12) increase in sequence from a direction close to the counter-impact cavity (11) to a direction away from the counter-impact cavity (11).

5. A pressure reducing valve, characterized in that: include: The valve body (2), the pressure reducing assembly (3) and the two impact members as described in any one of claims 1 to 4, the valve body (2) is provided with a valve cavity (21) inside and the outer wall thereof is provided with the inlet channel (22) and the pressure reducing valve hole (23), the inlet channel (22) and the pressure reducing valve hole (23) are both connected to the valve cavity (21) and the hole wall of the pressure reducing valve hole (23) is provided with a pressure reducing outlet hole (24); the two columns (1) are respectively placed in the inlet channel (22) and the pressure reducing outlet hole (24); the pressure reducing assembly (3) is detachably connected to the pressure reducing valve hole (23), and can discharge high-pressure gas or high-pressure liquid in the valve cavity (21) that is higher than a predetermined pressure from the pressure reducing outlet hole (24).

6. A pressure reducing valve according to claim 5, characterized in that: The pressure reducing assembly (3) comprises a pressure reducing valve cover (31), a pressure reducing spring (32) and a pressure reducing valve core (33); the pressure reducing valve cover (31) is detachably connected to the pressure reducing valve hole (23); the pressure reducing spring (32) is placed in the pressure reducing valve hole (23) and one end of the pressure reducing spring is in contact with the pressure reducing valve cover (31); the pressure reducing valve core (33) is inserted into the valve cavity (21) and seals and slides in the pressure reducing valve hole (23); the other end of the pressure reducing spring (32) is in contact with the pressure reducing valve core (33) so that under the impact of the high-pressure gas or high-pressure liquid in the valve cavity (21), the pressure reducing valve core (33) is pushed to slide, squeeze and compress the pressure reducing spring (32), so that the valve cavity (21) communicates with the pressure reducing outlet hole (24), and the pressure reducing and discharge of the high-pressure gas or high-pressure liquid in the valve cavity (21) is completed.

7. A pressure reducing valve according to claim 6, characterized in that: The pressure reducing valve hole (23) is divided into a pressure reducing hole section (231) and a pressure stabilizing hole section (232) in a direction from close to the valve cavity (21) to far away from the valve cavity (21); the pressure reducing hole section (231) is communicated with the valve cavity (21); the pressure reducing outlet hole (24) is arranged on the hole wall of the pressure stabilizing hole section (232); the pressure reducing valve core (33) comprises a core block (331), a valve stem (332) and a valve plate (333); the core block (331) is sealed and fixed in the pressure reducing hole section (231) and a through hole is arranged in the middle thereof; the valve stem (332) is inserted into the valve cavity (21) and a gap passes through the through hole, so as to A pressure reducing passage is defined between the outer wall of the valve stem (332) and the inner wall of the through hole; the valve plate (333) seals and slides in the pressure stabilizing hole section (232) and one side surface of the valve plate can contact the core block (331); the other end of the pressure reducing spring (32) contacts the other side surface of the valve plate (333) so as to push the valve plate (333) to slide under the impact of the high-pressure gas or high-pressure liquid in the valve cavity (21), squeeze and compress the pressure reducing spring (32), and move the valve plate (333) away from the core block (331) to open the through hole, thereby completing the pressure reducing and discharge of the high-pressure gas or high-pressure liquid in the valve cavity (21).

8. A pressure reducing valve according to claim 7, characterized in that: The valve plate (333) comprises a support ring (3331), a push rod (3332) and a spring seat (3333); the support ring (3331) is sealingly slidable in the pressure reducing hole section (231); the push rod (3332) is sealingly slidable in the support ring (3331) and one end of the push rod can contact the core block (331); the spring seat (3333) is fixed to the other end of the push rod (3332); the other end of the pressure reducing spring (32) is in contact with the spring seat (3333), so as to push the push rod (3332) to slide under the impact of the high-pressure gas or high-pressure liquid in the valve cavity (21), squeeze and compress the pressure reducing spring (32), and make the push rod (3332) move away from the core block (331) to open the through hole, thereby completing the pressure reducing and discharge of the high-pressure gas or high-pressure liquid in the valve cavity (21).

9. A pressure reducing valve according to claim 5, characterized in that: The valve body (2) is provided with a pressure relief valve hole (25) which is in communication with the valve cavity (21), and a pressure relief outlet hole (26) is provided on the hole wall of the pressure relief valve hole (25); the pressure relief component (4) is detachably connected to the pressure relief valve hole (25) and can discharge high-pressure gas or high-pressure liquid in the valve cavity (21) which is higher than a predetermined pressure from the pressure relief outlet hole (26).

10. A pressure reducing valve according to claim 9, characterized in that: The pressure relief assembly (4) comprises a pressure relief valve cover (41), a pressure relief spring (42) and a pressure relief valve core (43); the pressure relief valve cover (41) is detachably connected to the pressure relief valve hole (25); the pressure relief spring (42) is placed in the pressure relief valve hole (25) and one end of the pressure relief spring (42) is in contact with the pressure relief valve cover (41); the pressure relief valve core (43) is sealingly slid in the pressure relief valve hole (25); the other end of the pressure relief spring (42) is in contact with the pressure relief valve core (43) so as to push the pressure relief valve core (43) to slide under the impact of the high-pressure gas or high-pressure liquid after the impact, squeeze and compress the pressure relief spring (42), so that the valve cavity (21) is connected with the pressure relief outlet hole (26), and the pressure relief and discharge of the high-pressure gas or high-pressure liquid in the valve cavity (21) is completed.

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