CN107806524B - Axial-flow type water control pressure reducing valve - Google Patents
Axial-flow type water control pressure reducing valve Download PDFInfo
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- CN107806524B CN107806524B CN201711041546.1A CN201711041546A CN107806524B CN 107806524 B CN107806524 B CN 107806524B CN 201711041546 A CN201711041546 A CN 201711041546A CN 107806524 B CN107806524 B CN 107806524B
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- pressure
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 238000007789 sealing Methods 0.000 claims description 88
- 210000004907 gland Anatomy 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention provides an axial-flow type water control pressure reducing valve which comprises a valve body, a water inlet, a water outlet, a first valve seat, a pressure relief body, a pressure relief valve, a piston ring and a piston, wherein the water inlet and the water outlet are arranged at two ends of the valve body; when the pressure release valve is opened, the pressure release lower cavity is communicated with the inner cavity of the piston, so that the control precision of opening and closing the piston can be improved, and cavitation and vibration suffered by parts in the valve body can be weakened.
Description
Technical Field
The invention relates to the field of valves, in particular to an axial-flow type water control pressure reducing valve.
Background
The hydraulic control valve is a valve which uses the pressure of pipeline medium as power to open and close and regulate. The current hydraulic control valve consists of a main valve, an attached pilot valve and the like. The pilot valve acts along with the change of the liquid level and the pressure of the medium, and can be singly used or used in combination due to various types of the pilot valve, so that the main valve can obtain the functions of singly and compositely adjusting the water level, the water pressure, the flow and the like.
The hydraulic control valve is divided into a diaphragm type and a piston type, the working principle is the same, the pressure difference between the upstream and the downstream is used as power, and the pilot valve is used for controlling, so that the diaphragm (piston) is hydraulically operated in a differential mode, and the hydraulic control valve is completely and automatically regulated by the hydraulic force, so that the valve clack of the main valve is completely opened or completely closed or is in a regulating state.
The existing hydraulic control valve has a complex structure and large volume, so that the use space is increased, and the miniaturization is not facilitated. The combined control of the additional pilot valve can result in a longer control stroke of the main valve, and the control is not direct and not sensitive enough. The biggest problem of the current hydraulic control valve is that cavitation occurs in devices in the valve after long-term use. Cavitation is the phenomenon that the rear end of a throttling device is rapidly reduced due to pressure under the throttling action of fluid, so that liquid is vaporized, and then strong impact is caused on the microscopic surface of the device in the process of annihilation of bubbles, so that noise, vibration and corrosion are generated. Therefore, the current hydraulic control valve has short service life and high cost.
In view of this, it is necessary to design an axial flow type water control pressure reducing valve to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the technical problems that: an axial flow type water control pressure reducing valve capable of improving control accuracy and controlling cavitation and vibration is provided.
In order to achieve the above purpose, the present invention provides the following technical solutions: the axial flow type water control pressure reducing valve comprises a valve body, a water inlet, a water outlet, a first valve seat, a piston ring, a piston cavity, a pressure relief body and a pressure relief valve, wherein the water inlet and the water outlet are arranged at two ends of the valve body, the first valve seat is arranged at the water outlet, the piston ring is arranged in the valve body, the piston ring is arranged in the piston ring and is in sealing fit with the first valve seat, the piston and the piston ring form a piston cavity, the pressure relief body is arranged in the valve body, the pressure relief valve is arranged in the pressure relief body, the piston ring is provided with a pressure guide pipe and a water inlet needle valve, the pressure relief valve divides the pressure relief body into a pressure relief upper cavity and a pressure relief lower cavity, the water inlet is communicated with the piston cavity through the water inlet needle valve, the water outlet is communicated with the pressure relief lower cavity through the pressure guide pipe, and when the pressure relief valve is closed, the pressure relief upper cavity is communicated with the piston cavity; when the pressure release valve is opened, the pressure release lower cavity is communicated with the inner cavity of the piston.
Further, the pressure release body is equipped with the installation passageway of installation relief valve, the relief valve is including installing second disk seat, sealing seat and the connecting pipe of connecting valve body and the pressure release body in proper order in the installation passageway, the relief valve still includes with second disk seat and sealing seat all sealing fit's pressure release case, supports the elastomeric element of pressure release case top and supports the regulation pole of pressure in the elastomeric element top.
Further, a partition plate is arranged between the installation channel and the pressure relief lower cavity, the installation channel is provided with a horizontal through hole and a vertical through hole which are communicated with the partition plate and the pressure relief body, and a communication hole which is communicated with the pressure relief body, the horizontal through hole is communicated with the sealing seat and divides the sealing seat into an upper sealing seat and a lower sealing seat, the pressure relief valve core is respectively in sealing fit with the upper sealing seat and the lower sealing seat, and the horizontal through hole is communicated with the pressure relief lower cavity and the pressure guide pipe; the pressure relief valve core penetrates out of the vertical through hole and enters the pressure relief lower cavity when being far away from the second valve seat; the pressure relief upper cavity is surrounded by the lower sealing seat, the second valve seat and the pressure relief valve core, and the communication hole is communicated with the pressure relief upper cavity and the inner cavity of the piston.
Further, the first sealing ring which is in sealing fit with the second valve seat and the sealing cover for fixing the first sealing ring are arranged at the lower end of the pressure relief valve core, the first sealing ring comprises a fixing part and a contact part which is formed by extending from the fixing part, and the cross section of the contact part is in a right triangle or an obtuse triangle.
Further, the pressure relief body and the valve body are integrally formed and are hemispherical, and the piston ring is fixed on the pressure relief body in a sealing mode through a plurality of bolts.
Further, one end of the piston ring is provided with an assembling port for installing a piston, and the assembling port is abutted against the first valve seat; the other end of the piston ring is provided with a mounting hole, and the impulse pipe is inserted into the piston ring from the mounting hole and penetrates through the piston to extend to the water outlet; the side wall of the piston ring is provided with a plurality of opening and closing ports, and the opening and closing ports are close to the assembly ports.
Further, the piston is provided with an annular surface in sealing fit with the first valve seat, a groove opposite to the annular surface and a perforation penetrating through the piston, the groove and the piston ring form the inner cavity of the piston, and the impulse pipe penetrates through the perforation.
Further, install gland and cover and establish in the gland outside and restrict the rand of first disk seat motion on the first disk seat, first disk seat and gland form the seal groove, install in the seal groove with piston seal cooperation second sealing washer, leave the clearance between seal groove and the second sealing washer.
Further, the water inlet needle valve comprises a conical part formed by extending an adjusting part and a self-adjusting part, the adjusting part is arranged on the valve body and penetrates out of the valve body, and the conical part is arranged on the piston ring and is inserted into the piston ring.
Further, a spring positioned in the inner cavity of the piston is sleeved on the pressure guide pipe.
Compared with the prior art, the invention has at least the following advantages:
1. the axial-flow type piston structure has good medium flow state, and the acting force of the medium can not directly act on the piston, so that the problems of cavitation, vibration and the like are avoided in the decompression process;
2. the piston type differential control structure ensures that the opening and closing stroke of the piston is more accurate, the jumping phenomenon is not generated when the pressure is fluctuated, and the pressure regulating time of the pressure reducing valve can be controlled by regulating the opening of the water inlet needle valve;
3. the control system is totally built-in, has no piping and no external pilot valve, has fewer fault points, compact structure, small installation space and lower manufacturing cost, and the control system built in the center of the valve body never worries about icing, frost cracking and other problems.
Drawings
Fig. 1 is a schematic structural view of an axial flow type water control pressure reducing valve according to the present invention.
Fig. 2 is a partially enlarged view of a portion a of the axial flow type water control pressure reducing valve shown in fig. 1.
Fig. 3 is a partially enlarged view of a portion B of the axial flow water control pressure reducing valve shown in fig. 1.
Detailed Description
The structure and summary of the axial flow water control pressure reducing valve of the present invention are described below with reference to fig. 1 to 3.
The utility model provides an axial-flow water accuse relief pressure valve, includes valve body 1, sets up water inlet 2 and delivery port 3 at valve body 1 both ends, installs at the first disk seat 4 of delivery port 3, sets up at valve body 1 inside and be close to the pressure release body 5 of water inlet, installs the relief valve 50 in the pressure release body 5, installs the piston ring 6 on the pressure release body 5 and installs in piston ring 6 and with first disk seat 4 sealing fit's piston 7.
And the valve body 1 is provided with pressure measuring holes 11 at positions corresponding to the water inlet 2 and the water outlet 3. And a pressure measuring instrument is arranged on the pressure measuring hole 11.
The first valve seat 4 is mounted on the water outlet 3 of the valve body 1 in a sealing manner. The first valve seat 4 is provided with a gland 41 and a collar 42 sleeved outside the gland 41 and limiting the movement of the first valve seat 4. The gland 41 is fixed to the first valve seat 4 by means of a number of bolts. An annular clamping groove is concavely formed in the inner side of the water outlet 3. The collar 42 is partially located in the slot. The portion of the collar 42 protruding from the catch limits movement of the first valve seat 4 side. The other side of the first valve seat 4 is limited in movement by a piston ring 6. The first valve seat 4 and the gland 41 are combined to form a sealing groove 43. A second sealing ring 44 is arranged in the sealing groove 43 and is in sealing fit with the piston 7. And a gap is reserved between the sealing groove 43 and the second sealing ring 44 to form a self-sealing structure, so that the sealing performance is improved. The pressure measuring hole 11 sequentially penetrates through the first valve seat 4 and the gland 41, so that the pressure measuring hole 11 can be communicated with the interior of the valve body 1.
The pressure relief body 5 and the valve body 1 are integrally formed, and a plurality of supporting ribs (not shown) are arranged between the pressure relief body and the valve body. The pressure relief body 5 is hemispherical and is arranged near the water inlet 2. The pressure relief body comprises a vertical surface and an arc surface. The circular arc of the pressure relief body 5 faces the water inlet 2, and the pressure relief body 5 is small in size and can reduce water loss. The pressure relief body 5 is internally provided with a mounting channel for mounting the pressure relief valve 50. The pressure relief valve 50 divides the pressure relief body 5 into a pressure relief upper chamber 51 and a pressure relief lower chamber 52. A partition 53 is arranged between the mounting channel and the pressure relief lower cavity 52. The cross section of the partition 53 is L-shaped. The installation channel 51 is provided with a horizontal through hole 54 penetrating the partition plate 53 and the vertical surface of the pressure relief body 5, a vertical through hole 55 penetrating the partition plate 53 and the circular arc surface of the pressure relief body 5, and a communication hole 56 penetrating the vertical surface of the pressure relief body.
The pressure release valve 50 comprises a second valve seat 500, a sealing seat 501 and a connecting pipe 502 for connecting the valve body 1 and the pressure release body 5, which are sequentially and hermetically installed in the installation channel. The second valve seat 500, the sealing seat 501 and the connecting pipe 502 are integrally connected with each other in an abutting manner. The relief valve 50 further comprises a relief valve core 503 in sealing fit with the second valve seat 500 and the sealing seat 501, an elastic member 504 abutting against the relief valve core 503, and an adjusting rod 505 abutting against the elastic member 504.
The second valve seat 500 is annular and is provided with a pressure relief opening through which the pressure relief valve core 503 passes. The second valve seat 500 is disposed below the mounting channel and on a horizontal shoulder of the diaphragm 53. The horizontal through hole 54 penetrates the seal holder 501 and divides the seal holder 501 into an upper seal holder 5010 and a lower seal holder 5011. The upper sealing seat 5010 is cylindrical; the cross section of the lower seal 5011 is in an inverted L shape. One end of the connecting pipe 502 is inserted into the vertical through hole 55 of the installation channel; the other end passes through the valve body 1 and is communicated with the outside of the valve body 1. A valve cover 506 is mounted on the connecting tube 502. The valve cover 506 is fixed to the valve body 1 by bolts.
The pressure relief valve core 503 includes a first sealing portion 5030 in sealing engagement with the upper sealing seat 5010, a second sealing portion 5031 extending from the first sealing portion 5030 and in sealing engagement with the lower sealing seat 5011, and a third sealing portion 5032 extending from the second sealing portion 5031 and passing through the communication hole 56 and the pressure relief port of the second valve seat 500 in order. The first sealing portion 5030, the second sealing portion 5031 and the third sealing portion 5032 are cylindrical and have diameters decreasing in sequence. The second seal 5031 is partially located in the upper seal housing 5010 and the horizontal through hole 54. The second sealing portion 5031 forms an annular flow passage with the horizontal through hole 54. The lower end of the third sealing portion 5032 is further provided with an annular boss 5033 located below the second valve seat 500, a first sealing ring 5034 in sealing fit with the second valve seat 500, and a sealing cover 5035 for fixing the first sealing ring 5034. The sealing cover 5035 is fixed to the lower end of the third sealing part by a screw. The first seal ring 5034 is sleeved on the free end of the third seal portion 5032 and covers the annular boss 5033 through the seal cover 5035. The extrusion force of the annular boss 5033 on the first sealing ring 5034 can be changed through the adjusting screw, so that the ductility of the first sealing ring 5034 is increased, and the problem that the sealing performance of the first sealing ring 5034 is reduced due to abrasion can be solved. The first seal ring 5034 includes a fixing portion 5036 and a contact portion 5037 extending from the fixing portion 5036. The cross section of the contact portion 5037 is right triangle or obtuse triangle, so that the sealing performance of the first sealing ring 5034 can be improved. The annular boss 5033 of the third seal 5032 passes out of the vertical through hole 55 into the relief lower chamber 52 when being away from the second valve seat 500. The pressure relief upper chamber 51 is surrounded by a lower seal 5011, a second valve seat 500, and a second seal 5031 of the pressure relief valve core 503. The third seal 5032 forms an annular chamber with the relief upper chamber 51. The pressure relief lower cavity 52 is defined by an arc surface of the pressure relief body 5 and a partition plate 53.
The elastic member 504 is a spring, and one end of the spring is pressed against the first sealing portion 5030 of the pressure release valve core 503. A pressing plate 507 is provided between the other end of the elastic member 504 and the adjusting lever 505.
One end of the adjusting rod 505 is propped against the propping plate 507; the other end extends out of valve cover 506 and mounts an adjustment nut. The adjusting nut can adjust the length of the adjusting rod 505 extending into the connecting pipe 502, thereby changing the compression amount of the elastic member 504.
The piston ring 6 is fixed on the vertical surface of the pressure relief body 5 in a sealing way through a plurality of bolts. The piston ring 6 is cylindrical. One end of the piston ring 6 is provided with an assembly opening 60 for mounting the piston 7. The fitting opening 60 rests against the first valve seat 4. The other end of the piston ring 6 is provided with a mounting hole 61 communicating with the horizontal through hole 54 of the pressure relief body 5 and a connecting hole 62 communicating with the communication hole 56 of the pressure relief body 5. The side wall of the piston ring 6 is provided with a plurality of opening and closing ports 63. The opening and closing port 63 is close to the assembly port 60. The piston ring 6 is provided with a pressure guide pipe 64 and a water inlet needle valve 65. The impulse pipe 64 is inserted from the mounting hole 61 into the piston ring 6 and extends through the piston 7 to the water outlet 3. The horizontal through hole 54 is communicated with the pressure relief lower cavity 52 and the pressure guide pipe 64, namely the water outlet 3 is communicated with the pressure relief lower cavity 52 through the pressure guide pipe 64. The water inlet needle valve 65 includes an adjusting portion 651 and a tapered portion 652 formed by extending the adjusting portion 651. The adjusting portion 651 is mounted on the valve body 1 and penetrates the valve body 1. An adjusting nut is also mounted on the adjusting portion 651. The water inflow amount of the water inflow needle valve 65 is also adjusted by an adjusting nut. The tapered portion 652 is mounted on the piston ring 6 and is inserted into the piston ring 6.
The piston 7 is cylindrical and has an annular surface 70 at one end for sealing engagement with the first valve seat 4. The annular surface 70 may be formed by rounding or chamfering one end of the piston 7. The invention is formed by providing an annular step at one end of the piston 7. The other end of the piston 7 is provided with a recess 71. The other end of the piston 7 and the piston ring 6 form a piston cavity 72. I.e. the recess 71 forms with the piston ring 6 the piston inner chamber 72. The water inlet 2 is communicated with the piston inner cavity 72 through a water inlet needle valve 65. The pressure release upper chamber 51 and the piston inner chamber 72 communicate with each other through the communication hole 56 and the connection hole 62. The piston 7 is further provided with a through hole 73 penetrating along the axial direction of the piston 7. The impulse pipe 64 passes through the perforations 73. The impulse tube 64 is sleeved with a spring 74 positioned within the piston bore 72. The mounting hole 61 of the piston ring 6 protrudes inward to form a first spring seat 66. One end of the spring 74 is positioned within the first spring seat 66. The recess 71 of the piston 7 is further provided with a second spring seat 75. The other end of the spring 74 is located within a second spring seat 75. The spring 74 can ensure that the piston 7 is in sealing fit with the first valve seat 4 when the water inlet 2 and the water outlet 3 are not pressurized, and the valve is closed.
When the pressure relief valve is closed, the pressure relief upper cavity 51 is communicated with the piston inner cavity 72; when the relief valve is open, the relief lower chamber 52 communicates with the piston inner chamber 72.
The working principle of the invention is as follows:
as shown in fig. 1, the medium flows, the upstream pressure P1 and the downstream pressure P2 are delimited at the region between the piston 7 and the first valve seat 4, the upstream pressure P1 slowly entering the piston interior 72 via the inlet needle 65, and the downstream pressure P2 entering the horizontal through-hole 54 and the pressure relief lower chamber 52 via the pressure conduit 64. Whether the relief spool 503 is open or not, provided that the downstream pressure P2 entering the horizontal through hole 54 overcomes the elastic force of the elastic member 504 or not. If the downstream pressure P2 rises, the generated thrust is greater than the spring force, the pressure release valve core 503 moves upwards, the pressure release opening is closed, at the moment, the piston inner cavity 72 is communicated with the upstream only through the water inlet needle valve 65, the pressure of the piston inner cavity 72 rises, and the piston 7 performs closing action; when the piston 7 is closed, the downstream pressure P2 starts to decrease, when the pressure P2 decreases to be smaller than the spring force, the pressure release valve core 503 is opened, the downstream pressure P2 enters the pressure release upper chamber 51, at this time, the piston inner chamber 72 is connected to the pressure release upper chamber 52, and since the pressure release opening is far larger than the caliber of the water inlet needle valve, the pressure of the piston inner chamber 72 starts to decrease, the piston 7 performs the opening action (because the acting pressure of the annular surface 70 of the piston 7 is P1, when the pressure of the piston inner chamber 72 is P2, the piston force is right at this time, that is, the piston 7 performs the valve opening action), therefore, when the elastic force of the elastic member 504 is constant, the piston 7 is in a dynamic balance state, and the downstream pressure P2 is ensured to reach the set value, thereby achieving the purpose of pressure reduction.
In summary, the above is only a preferred embodiment of the present invention, and should not be used to limit the scope of the present invention. All simple and equivalent changes and modifications made in accordance with the claims and the specification should be considered as falling within the scope of the present invention.
Claims (8)
1. The utility model provides an axial-flow water accuse relief pressure valve, includes the valve body, sets up water inlet and delivery port at the valve body both ends, installs at the first disk seat of delivery port, installs at the inside piston ring of valve body and installs in the piston ring and with first disk seat sealing fit's piston, piston and piston ring constitute piston inner chamber, its characterized in that: the axial-flow type water control pressure reducing valve further comprises a pressure relief body arranged in the valve body and a pressure relief valve arranged in the pressure relief body, the piston ring is arranged on the pressure relief body, a pressure guide pipe and a water inlet needle valve are arranged on the piston ring, the pressure relief valve divides the pressure relief body into a pressure relief upper cavity and a pressure relief lower cavity, the pressure relief body is provided with a mounting channel for mounting the pressure relief valve, the pressure relief valve comprises a second valve seat, a sealing seat and a connecting pipe for connecting the valve body and the pressure relief body, which are sequentially arranged in the mounting channel, the pressure relief valve further comprises a pressure relief valve core, an elastic component and an adjusting rod, wherein the pressure relief valve core is in sealing fit with the second valve seat and the sealing seat, the elastic component is abutted against the pressure relief valve core, the adjusting rod is abutted against the elastic component, a partition plate is arranged between the mounting channel and the pressure relief lower cavity, the mounting channel is provided with a horizontal through hole and a vertical through hole which is communicated with the partition plate and the pressure relief body, the horizontal through hole is communicated with the sealing seat and the pressure relief body, the pressure relief valve is divided into an upper sealing seat and a lower sealing seat, and the pressure relief valve seat, the pressure relief valve is respectively communicated with the upper sealing seat and the pressure relief valve, and the pressure relief valve is respectively; the pressure relief valve core penetrates out of the vertical through hole and enters the pressure relief lower cavity when being far away from the second valve seat; the pressure relief upper cavity is formed by enclosing a lower sealing seat, a second valve seat and a pressure relief valve core, the communication hole is communicated with the pressure relief upper cavity and the piston inner cavity, the water inlet is communicated with the piston inner cavity through a water inlet needle valve, the water outlet is communicated with the pressure relief lower cavity through a pressure guide pipe, and when the pressure relief valve is closed, the pressure relief upper cavity is communicated with the piston inner cavity; when the pressure release valve is opened, the pressure release lower cavity is communicated with the inner cavity of the piston.
2. The axial flow water control pressure reducing valve according to claim 1, wherein: the pressure relief valve core lower extreme install with second disk seat sealing fit's first sealing washer and the sealed lid of fixed first sealing washer, first sealing washer includes fixed part and extends the contact portion that forms from fixed part, the cross section of contact portion becomes right angled triangle or obtuse triangle.
3. The axial flow water control pressure reducing valve according to claim 1, wherein: the pressure relief body and the valve body are integrally formed and are hemispherical, and the piston ring is fixed on the pressure relief body in a sealing mode through a plurality of bolts.
4. The axial flow water control pressure reducing valve according to claim 1, wherein: one end of the piston ring is provided with an assembly port for installing a piston, and the assembly port is abutted against the first valve seat; the other end of the piston ring is provided with a mounting hole, and the impulse pipe is inserted into the piston ring from the mounting hole and penetrates through the piston to extend to the water outlet; the side wall of the piston ring is provided with a plurality of opening and closing ports, and the opening and closing ports are close to the assembly ports.
5. The axial flow water control pressure reducing valve according to claim 1, wherein: the piston is provided with an annular surface in sealing fit with the first valve seat, a groove opposite to the annular surface and a perforation penetrating through the piston, the groove and the piston ring form an inner cavity of the piston, and the impulse pipe penetrates through the perforation.
6. The axial flow water control pressure reducing valve according to claim 1, wherein: the sealing device is characterized in that a gland and a clamping ring which is sleeved on the outer side of the gland and limits the movement of the first valve seat are arranged on the first valve seat, the first valve seat and the gland form a sealing groove, a second sealing ring which is matched with the piston in a sealing mode is arranged in the sealing groove, and a gap is reserved between the sealing groove and the second sealing ring.
7. The axial flow water control pressure reducing valve according to claim 1, wherein: the water inlet needle valve comprises an adjusting part and a conical part formed by extending the adjusting part, the adjusting part is arranged on the valve body and penetrates out of the valve body, and the conical part is arranged on the piston ring and is inserted into the piston ring.
8. The axial flow water control pressure reducing valve according to claim 1, wherein: and a spring positioned in the inner cavity of the piston is sleeved on the pressure guide pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711041546.1A CN107806524B (en) | 2017-10-31 | 2017-10-31 | Axial-flow type water control pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711041546.1A CN107806524B (en) | 2017-10-31 | 2017-10-31 | Axial-flow type water control pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107806524A CN107806524A (en) | 2018-03-16 |
| CN107806524B true CN107806524B (en) | 2023-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711041546.1A Active CN107806524B (en) | 2017-10-31 | 2017-10-31 | Axial-flow type water control pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107806524B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111558939B (en) * | 2020-05-06 | 2022-04-08 | 珠海格力智能装备有限公司 | Valve body assembling method, system, device, storage medium and processor |
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| RU2009133491A (en) * | 2009-09-07 | 2011-03-20 | Евгений Николаевич Бокач (RU) | AXIAL FLOW VALVE FOR ENERGY OBJECTS |
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| CN202972062U (en) * | 2012-11-19 | 2013-06-05 | 福建高中压阀门科技有限公司 | Direct-flow piston type adjustable pressure relief valve |
| CN203036023U (en) * | 2012-11-23 | 2013-07-03 | 凯泰阀门(集团)有限公司 | Fusiform adjustable check valve |
| CN204420135U (en) * | 2015-01-28 | 2015-06-24 | 江南阀门有限公司 | Flow-rate adjustment piston type axial flow modulating valve |
| CN207514241U (en) * | 2017-10-31 | 2018-06-19 | 安徽红星阀门有限公司 | A kind of axial-flow type water control relief valve |
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2017
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|---|---|---|---|---|
| CN2581762Y (en) * | 2002-09-28 | 2003-10-22 | 季能平 | Straight-flow liquid control valve |
| RU2267680C1 (en) * | 2004-05-28 | 2006-01-10 | Общество с ограниченной ответственностью Научно-производственный центр "Анод" | Axial flow valve |
| RU2009133491A (en) * | 2009-09-07 | 2011-03-20 | Евгений Николаевич Бокач (RU) | AXIAL FLOW VALVE FOR ENERGY OBJECTS |
| CN102927338A (en) * | 2012-11-19 | 2013-02-13 | 福建高中压阀门科技有限公司 | Inlet/outlet throttling pressure differential self-powered opening-closing device and application thereof |
| CN202972062U (en) * | 2012-11-19 | 2013-06-05 | 福建高中压阀门科技有限公司 | Direct-flow piston type adjustable pressure relief valve |
| CN203036023U (en) * | 2012-11-23 | 2013-07-03 | 凯泰阀门(集团)有限公司 | Fusiform adjustable check valve |
| CN204420135U (en) * | 2015-01-28 | 2015-06-24 | 江南阀门有限公司 | Flow-rate adjustment piston type axial flow modulating valve |
| CN207514241U (en) * | 2017-10-31 | 2018-06-19 | 安徽红星阀门有限公司 | A kind of axial-flow type water control relief valve |
| CN207514322U (en) * | 2017-10-31 | 2018-06-19 | 安徽红星阀门有限公司 | A kind of axial-flow type water control pressure reducing valve |
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| Publication number | Publication date |
|---|---|
| CN107806524A (en) | 2018-03-16 |
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Denomination of invention: An axial flow water control pressure reducing valve Granted publication date: 20231226 Pledgee: China Construction Bank Corporation Tongling Development Zone Branch Pledgor: ANHUI REDSTAR VALVE Co.,Ltd. Registration number: Y2024980012362 |