CN108278396B - Ultra-high pressure fluid safety valve - Google Patents
Ultra-high pressure fluid safety valve Download PDFInfo
- Publication number
- CN108278396B CN108278396B CN201810087455.XA CN201810087455A CN108278396B CN 108278396 B CN108278396 B CN 108278396B CN 201810087455 A CN201810087455 A CN 201810087455A CN 108278396 B CN108278396 B CN 108278396B
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- China
- Prior art keywords
- valve
- valve body
- ultra
- high pressure
- pressure fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000012530 fluid Substances 0.000 title claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 230000006837 decompression Effects 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention provides an ultrahigh-pressure fluid safety valve, and belongs to the technical field of safety valves. The valve comprises a valve body, a valve seat which is positioned in the valve body and is in sealing connection with the valve body, a valve rod is screwed outside the valve body, an elastic piece is arranged in the valve rod, a guide shaft which is in sealing connection with the valve body and can move forwards and backwards along the valve body is arranged in the valve body, the guide shaft is positioned between the elastic piece and the valve seat, one end, close to the valve seat, of the guide shaft is provided with an annular sealing clamping table, the sealing clamping table is clamped into the valve seat and is in sealing connection with the valve seat, a flow increasing cavity is formed between the bottom of the guide shaft and the top of the valve seat, the flow increasing cavity surrounds the sealing clamping table, and a flow guide hole penetrating through the valve body is formed in the valve body. According to the invention, when the hydraulic end is overpressured, the safety valve can rapidly respond to pressure relief, and the hydraulic end can be operated under lower pressure after the pressure relief, so that the system safety is ensured.
Description
Technical Field
The invention belongs to the technical field of safety valves, and relates to an ultrahigh-pressure fluid safety valve.
Background
The safety valve is a special valve which is in a normally closed state under the action of external force and prevents the medium pressure in the pipeline or the equipment from exceeding a specified value by discharging the medium to the outside of the system when the medium pressure in the equipment or the pipeline rises to exceed the specified value. The safety valve belongs to automatic valves, and is mainly used for boilers, pressure vessels and pipelines, and the control pressure does not exceed a specified value, so that the safety valve plays an important role in protecting personal safety and equipment operation.
The function of the relief valve is particularly important in ultra-high pressure hydraulic systems. The existing ultrahigh pressure safety valve is slower in response action, and after the safety valve is opened, the hydraulic end still has large pressure, so that potential safety hazards of a hydraulic system are caused.
Disclosure of Invention
The invention aims to solve the problems and provide an ultrahigh-pressure fluid safety valve.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides an ultra-high pressure fluid relief valve, including the valve body, be located the valve body and with valve body sealing connection's disk seat, the external spiro union of valve has the valve rod, be equipped with the elastic component in the valve rod, be equipped with in the valve body with valve body sealing connection and can follow the guiding axle of valve body axial back-and-forth movement, the guiding axle is located between elastic component and the disk seat, be equipped with one in the one end that the guiding axle is close to the disk seat and be annular sealed block, sealed block go into in the disk seat with disk seat sealing connection, form between guiding axle bottom and the disk seat top and increase the flow chamber and encircle sealed block, be equipped with the water conservancy diversion hole that runs through the valve body on the valve body.
In the ultrahigh pressure fluid safety valve, a buffer ring is sleeved outside the valve body, and the buffer ring is positioned outside the diversion hole and corresponds to the diversion hole in position.
In the ultrahigh pressure fluid safety valve, a steel ball is arranged in the sealing clamping table, a decompression groove is formed in the guide shaft, a decompression flow passage is formed in the valve seat, and the steel ball is pressed on the decompression flow passage.
In the above ultra-high pressure fluid safety valve, there are two guide shafts, and each pressure reducing groove is provided along the circumferential direction of the guide shaft.
In the ultrahigh-pressure fluid safety valve, a first leakage hole is formed in one end, close to the valve seat, of the valve body, a second leakage hole is formed in one end, close to the guide shaft, of the valve rod, and the first leakage hole and the second leakage hole penetrate through the valve body and the valve rod respectively.
In the ultra-high pressure fluid safety valve, the first leakage hole is communicated with a gap between the valve seat and the valve body, and the second leakage hole is communicated with a gap between the guide shaft and the valve rod.
In the ultra-high pressure fluid safety valve, the diversion hole is obliquely arranged from inside to outside of the valve body from top to bottom.
In the above ultra-high pressure fluid safety valve, the first leakage hole is inclined from the inside to the outside of the valve body.
In the ultra-high pressure fluid safety valve, the elastic piece comprises a disc spring, a pressure regulating nut is screwed in the valve rod, and two ends of the elastic piece respectively tightly prop against the guide shaft and the pressure regulating nut.
In the above ultra-high pressure fluid safety valve, two lug grooves on the same straight line are arranged at one end of the pressure regulating nut far away from the elastic piece.
Compared with the prior art, the invention has the advantages that:
1. when the hydraulic end is overpressured, the safety valve can rapidly respond to pressure relief, and the hydraulic end can be operated under lower pressure after the pressure relief, so that the safety of the system is ensured.
2. The safety valve is suitable for protecting the pressure of the hydraulic end within the pressure range of 0-150 MPa.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic structural view of the pressure regulating nut.
In the figure, a valve body 1, a valve seat 2, a valve rod 3, an elastic piece 4, a guide shaft 5, a sealing clamping table 6, a flow increasing cavity 7, a flow guiding hole 8, a buffer ring 9, a steel ball 10, a decompression groove 11, a decompression flow passage 12, a first leakage hole 13, a second leakage hole 14, a pressure regulating nut 15, an ear groove 16, a connecting rod 100 and an end cover 101.
Detailed Description
As shown in fig. 1, an ultrahigh-pressure fluid safety valve comprises a valve body 1, a valve seat 2 which is positioned in the valve body 1 and is in sealing connection with the valve body 1, a valve rod 3 is in threaded connection with the outside of the valve body 1, an elastic piece 4 is arranged in the valve rod 3, a guide shaft 5 which is in sealing connection with the valve body 1 and can move forwards and backwards along the axial direction of the valve body 1 is arranged in the valve body 1, the guide shaft 5 is positioned between the elastic piece 4 and the valve seat 2, one end, close to the valve seat 2, of the guide shaft 5 is provided with an annular sealing clamping table 6, the sealing clamping table 6 is clamped into the valve seat 2 and is in sealing connection with the valve seat, a flow increasing cavity 7 is formed between the bottom of the guide shaft 5 and the top of the valve seat 2, the flow increasing cavity 7 surrounds the sealing clamping table 6, and a flow guide hole 8 penetrating through the valve body 1 is arranged on the valve body 1.
In this embodiment, the sealing connection may be a sealing ring, and the sealing manner is in the prior art, which is not described herein.
When the pressure end is over-pressurized, the liquid with pressure pushes the sealing clamping table 6, the fluid enters the flow increasing cavity 7, when the fluid fills the flow increasing cavity, the acting area of the fluid with pressure on the guide shaft is far larger than the acting area of the fluid with pressure on the sealing clamping table 6 before, so that the guide shaft can be quickly pushed to act, when the flow increasing cavity 7 is communicated with the flow guiding hole 8, the pressure end pressure can be released, when the acting force of the flow pressure on the guide shaft and the acting force of the elastic piece on the guide shaft are balanced, a stable leakage amount is formed between the guide shaft and the flow guiding hole, the hydraulic value for maintaining the balance of the guide shaft is far smaller than the overpressure hydraulic value of the hydraulic end before, and the pressure end is continuously decompressed, so that the safety of the system is effectively ensured.
The elastic piece 4 comprises a disc spring, a pressure regulating nut 15 is screwed in the valve rod 3, and two ends of the elastic piece 4 respectively tightly prop against the guide shaft 5 and the pressure regulating nut 15. The top of the valve rod 3 is provided with an end cover 101 for shielding the pressure regulating nut 15, the bottom of the valve body is connected with a connecting rod 100 in a threaded manner, and the connecting rod 100 is convenient to connect with pressure relief equipment.
The valve body 1 is sleeved with a buffer ring 9, and the buffer ring 9 is positioned outside the diversion hole 8 and corresponds to the diversion hole 8. The design of the buffer ring enables high-pressure fluid to be sprayed on the buffer ring when being sprayed through the diversion holes, so that most of pressure can be released, and potential safety hazards possibly caused are avoided. 3. Two decompression grooves are designed on the guide shaft, when the sealing element fails, the leaked fluid can release certain pressure when passing through the decompression grooves, and the impact of the fluid on the parts after leakage is avoided, so that the impacted parts are damaged.
The steel ball 10 is arranged in the sealing clamping table 6, and is used as a valve head, so that a complex valve head processing technology is omitted, the steel ball is used as a standard part, the specification is many, the shape selection is convenient, the price is economical and practical, and the spherical surface sealing is more reliable. The guide shaft 5 is provided with a decompression groove 11, the valve seat 2 is provided with a decompression flow passage 12, and the steel ball 10 is pressed on the decompression flow passage 12.
It will be appreciated by those skilled in the art that the steel ball 10 is adapted to the shape and size of the sealing chuck 6 during design, and that the steel ball just blocks the outlet of the pressure relief flow passage 12 when the sealing chuck 6 is engaged with the valve seat 2. Thus, when the ball moves upward, the pressure relief flow passage 12 is opened.
Preferably, there are two decompression grooves 11, each of which is provided along the circumferential direction of the guide shaft. When the sealing element fails, the leaked fluid can release certain pressure when passing through the pressure reducing groove, so that the impact of the leaked fluid on the part is avoided, and the impacted part is damaged.
The valve body 1 is close to the one end of disk seat 2 and is equipped with first leakage hole 13, and the one end that the valve rod 3 is close to guiding axle 5 is equipped with the second leakage hole 14, first leakage hole 13 and second leakage hole 14 run through valve body 1 and valve rod 3 respectively.
When the corresponding first leakage hole or second leakage hole starts to leak, the corresponding sealing element in the safety valve can be effectively judged to be invalid, and the complicated checking process is avoided.
The first leakage hole 13 communicates with the space between the valve seat 2 and the valve body 1, and the second leakage hole 14 communicates with the space between the guide shaft 5 and the valve stem 3.
The diversion hole 8 is arranged obliquely from the inside to the outside of the valve body 1 from top to bottom.
The first leakage hole 13 is provided obliquely from the inside to the outside of the valve body 1 from the bottom to the top.
Referring to fig. 2, the end of the pressure regulating nut 15 remote from the elastic member 4 is provided with two lug grooves 16 on the same straight line. The design of the ear groove 16 makes the pressure regulating nut 1 rotate by a special tool, and prevents non-professional personnel from regulating the set pressure value of the safety valve. The design of the double lug grooves on the pressure regulating nut enables the pressure regulating nut and the special tool to bear large moment.
The working principle of the invention is as follows:
when the hydraulic end is overpressured, the pressurized liquid pushes the steel ball 10 to separate from the valve seat 2. When the steel ball is opened, fluid with pressure enters the space between the valve seat 2 and the guide shaft 5, namely the flow increasing cavity 7, and after the flow increasing cavity 7 is filled with the fluid, the pressure of the fluid is still a pressure value pushing the steel ball to act, however, the acting area of the fluid with pressure on the guide shaft is far larger than the acting area of the fluid with pressure on the steel ball before, so that the guide shaft can be pushed to act rapidly, and the guide shaft moves in a direction away from the valve seat. When the sealed space is communicated with the diversion hole 8 on the valve body 1, the safety valve can release the pressure of the pressure end. When the acting force of the fluid pressure on the guide shaft and the acting force of the elastic piece 4 on the guide shaft are balanced, a stable leakage amount is formed between the guide shaft and the guide hole, and the hydraulic value for maintaining the balance of the guide shaft is far smaller than the overpressure hydraulic value of the previous hydraulic end, so that stable pressure relief is maintained, and the safety of the system is effectively ensured. When the pressure of the pressure end is smaller than that of the elastic piece, the guide shaft 5 returns, and the steel ball blocks the pressure release flow channel 12.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although terms of the valve body 1, the valve seat 2, the valve stem 3, the elastic member 4, the guide shaft 5, the sealing chuck 6, the flow increasing chamber 7, the flow guiding hole 8, the buffer ring 9, the steel ball 10, the decompression groove 11, the decompression flow passage 12, the first leakage hole 13, the second leakage hole 14, the pressure adjusting nut 15, the ear groove 16, the connecting rod 100, the end cover 101, etc. are used more herein, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the nature of the invention and should be construed in a manner consistent with their spirit and scope.
Claims (8)
1. The utility model provides an ultra-high pressure fluid relief valve, including valve body (1), be located valve body (1) and with valve body (1) sealing connection's disk seat (2), valve body (1) external screw connection has valve rod (3), be equipped with elastic component (4) in valve rod (3), characterized in that, be equipped with in valve body (1) with valve body (1) sealing connection and can follow valve body (1) axial back and forth movable guiding axle (5), guiding axle (5) are located between elastic component (4) and disk seat (2), be equipped with one at guiding axle (5) be close to disk seat (2) one end and be equipped with one and be annular sealing clamping platform (6), sealing clamping platform (6) card is gone into in disk seat (2) with disk seat sealing connection, form between guiding axle (5) bottom and disk seat (2) top and increase and flow chamber (7) around sealing clamping platform (6), be equipped with on valve body (1) and run through valve body (1) guiding hole (8),
the valve body (1) overcoat be equipped with a buffer ring (9), buffer ring (9) are located water conservancy diversion hole (8) outside and position and water conservancy diversion hole (8) correspond, valve body (1) be close to the one end of disk seat (2) and be equipped with first leakage hole (13), valve rod (3) are close to the one end of guiding axle (5) and are equipped with second leakage hole (14), first leakage hole (13) and second leakage hole (14) run through valve body (1) and valve rod (3) respectively.
2. The ultra-high pressure fluid safety valve according to claim 1, wherein a steel ball (10) is arranged in the sealing clamping table (6), a decompression groove (11) is arranged on the guide shaft (5), a decompression flow passage (12) is arranged on the valve seat (2), and the steel ball (10) is pressed on the decompression flow passage (12).
3. The ultra-high pressure fluid safety valve according to claim 2, wherein there are two pressure reducing grooves (11), each of which is provided along the circumferential direction of the guide shaft.
4. Ultra-high pressure fluid safety valve according to claim 1, characterized in that the first leakage hole (13) communicates with the gap between the valve seat (2) and the valve body (1), and the second leakage hole (14) communicates with the gap between the pilot shaft (5) and the valve stem (3).
5. The ultra-high pressure fluid safety valve according to claim 1, wherein the diversion hole (8) is arranged obliquely from the inside to the outside of the valve body (1).
6. The ultra-high pressure fluid safety valve according to claim 1, wherein the first leakage hole (13) is inclined from the inside to the outside of the valve body (1).
7. The ultra-high pressure fluid safety valve according to claim 1, wherein the elastic member (4) comprises a disc spring, a pressure regulating nut (15) is screwed in the valve rod (3), and two ends of the elastic member (4) are respectively abutted against the guide shaft (5) and the pressure regulating nut (15).
8. The ultra-high pressure fluid safety valve according to claim 7, wherein the pressure regulating nut (15) has two lug grooves (16) on the same straight line at the end far away from the elastic member (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810087455.XA CN108278396B (en) | 2018-01-30 | 2018-01-30 | Ultra-high pressure fluid safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810087455.XA CN108278396B (en) | 2018-01-30 | 2018-01-30 | Ultra-high pressure fluid safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108278396A CN108278396A (en) | 2018-07-13 |
| CN108278396B true CN108278396B (en) | 2024-01-16 |
Family
ID=62805656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810087455.XA Active CN108278396B (en) | 2018-01-30 | 2018-01-30 | Ultra-high pressure fluid safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108278396B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677924A (en) * | 2020-06-30 | 2020-09-18 | 上海捷氢科技有限公司 | Plug-in type pressure relief safety valve |
| CN113638930A (en) * | 2021-10-13 | 2021-11-12 | 山东泰丰智能控制股份有限公司 | Split overflow valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201159310Y (en) * | 2007-12-27 | 2008-12-03 | 承德高中压阀门管件有限公司 | Check valve |
| CN101319731A (en) * | 2008-07-08 | 2008-12-10 | 中国船舶重工集团公司第七○二研究所 | Ultra-high pressure seawater safety valve |
| CN101865316A (en) * | 2010-06-30 | 2010-10-20 | 张银根 | Pulse safety valve |
| CN202100783U (en) * | 2011-05-25 | 2012-01-04 | 上海浦东汉威阀门有限公司 | Safety relief valve |
| CN102434691A (en) * | 2011-08-31 | 2012-05-02 | 常州天泰矿山设备制造有限公司 | Ultrahigh-pressure safety valve |
| CN207906530U (en) * | 2018-01-30 | 2018-09-25 | 浙江大农实业股份有限公司 | Super high pressure fluid safety valve |
-
2018
- 2018-01-30 CN CN201810087455.XA patent/CN108278396B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201159310Y (en) * | 2007-12-27 | 2008-12-03 | 承德高中压阀门管件有限公司 | Check valve |
| CN101319731A (en) * | 2008-07-08 | 2008-12-10 | 中国船舶重工集团公司第七○二研究所 | Ultra-high pressure seawater safety valve |
| CN101865316A (en) * | 2010-06-30 | 2010-10-20 | 张银根 | Pulse safety valve |
| CN202100783U (en) * | 2011-05-25 | 2012-01-04 | 上海浦东汉威阀门有限公司 | Safety relief valve |
| CN102434691A (en) * | 2011-08-31 | 2012-05-02 | 常州天泰矿山设备制造有限公司 | Ultrahigh-pressure safety valve |
| CN207906530U (en) * | 2018-01-30 | 2018-09-25 | 浙江大农实业股份有限公司 | Super high pressure fluid safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108278396A (en) | 2018-07-13 |
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