CN110541955B - High-temperature high-pressure safety valve - Google Patents
High-temperature high-pressure safety valve Download PDFInfo
- Publication number
- CN110541955B CN110541955B CN201910947064.5A CN201910947064A CN110541955B CN 110541955 B CN110541955 B CN 110541955B CN 201910947064 A CN201910947064 A CN 201910947064A CN 110541955 B CN110541955 B CN 110541955B
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- China
- Prior art keywords
- valve
- adjusting
- spring
- plate
- sleeve
- 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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- 238000000034 method Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 15
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 210000004907 gland Anatomy 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
- F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to a high-temperature high-pressure safety valve, which comprises a valve body, a valve seat, a valve clack, a guide sleeve, a valve cover, a valve rod and a spring pressure setting device, wherein the valve body is provided with a valve seat; the method is characterized in that: the spring pressure setting device consists of a rough adjusting device and a fine adjusting device; the rough adjusting device comprises a belleville spring, an adjusting sleeve, a guide plate and an annular adjusting plate, and the belleville spring is arranged between the lower end of the adjusting sleeve and a lower spring seat on the valve rod; the fine adjustment device comprises a cylindrical spring and an adjusting screw sleeve, wherein the adjusting screw sleeve is installed in a screw hole in the upper end face of the adjusting sleeve through external threads, the lower end of the cylindrical spring is installed on a radial step of a valve rod through a spring seat, and the upper end of the cylindrical spring is pressed at the lower end of the adjusting screw sleeve through a spring pressing cover. The valve rod clamping device has the advantages of good sealing performance, accurate setting pressure, flexible valve rod movement, reliable valve clack opening and closing and the like by adjusting the vertical position of the annular adjusting plate and adjusting the compression amount of the belleville spring, setting the valve clack setting pressure, and having no abrasion to the sealing surfaces of the valve clack and the valve seat when the setting pressure is adjusted.
Description
Technical Field
The invention relates to a safety valve, in particular to a spring type safety valve. The invention is suitable for the safety valve of the high-temperature high-pressure vessel.
Background
The spring type safety valve is characterized in that a spring is used for setting a set pressure value, acting force generated by compression of the spring is transmitted to a downward acting force of a valve clack through a valve rod, the compression amount of the spring is adjusted to adjust the sealing specific pressure between a sealing surface of the valve clack and a sealing surface of a valve seat, so that the set pressure value can be preset. The defects are that: because the spring size is great, the effort is great, drives the spring easily and produces torsional force when adjusting the spring to drive valve rod and valve clack rotation easily, valve clack sealing surface and valve seat sealing surface produce wearing and tearing destruction, influence the accuracy of leakproofness and setting pressure value, simultaneously, the spring is crooked easily when compressing, drives the valve rod slope, and the valve rod excircle produces friction or card with the direction position easily and dies, influences the flexibility that the valve rod reciprocated and the reliability that the valve opened and close.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the high-temperature high-pressure safety valve which has the advantages of good tightness, accurate setting pressure, flexible valve rod movement and reliable valve clack opening and closing.
The technical scheme of the invention comprises a valve body, a valve seat, a valve clack, a guide sleeve, a valve cover, a valve rod and a spring pressure setting device, wherein the valve seat is arranged at the inlet end of the valve body, the upper end of the valve seat extends into the inner cavity of the valve body, the upper end of the guide sleeve is fixedly arranged between the valve cover and the valve body, the valve clack is arranged in the guide sleeve, the outer round surface of the valve clack is in movable fit with the inner hole wall of the guide sleeve, the lower end of the valve clack is provided with a valve clack sealing surface which forms a seal with the valve seat sealing surface, and the lower end of the valve rod extends into the guide sleeve and is connected with the center of the back surface of the valve clack; the method is characterized in that: the spring pressure setting device consists of a rough adjusting device and a fine adjusting device; the coarse adjustment device comprises a disc spring, an adjusting sleeve, a guide plate and an annular adjusting plate, wherein the lower end of the disc spring is arranged on the upper end face of a lower spring seat, the lower end face of the lower spring seat is pressed on a radial step of a valve rod, the lower end of the adjusting sleeve penetrates through a guide hole of the guide plate to be fixedly connected with the upper end of the disc spring, the guide plate is fixedly arranged on a valve cover through an installing rod, a plurality of adjusting studs are fixedly arranged on the upper end face of the guide plate, a plurality of installing holes are formed in an annular plane of the annular adjusting plate, the installing holes are arranged on the adjusting studs through adjusting nuts, and an inner annular face of the lower end of the annular adjusting plate is pressed on the upper end face of the adjusting sleeve; the fine adjustment device comprises a cylindrical spring and an adjusting screw sleeve, wherein the adjusting screw sleeve is installed in a screw hole in the upper end face of the adjusting sleeve through external threads, the lower end of the adjusting screw sleeve stretches into an inner cavity of the adjusting sleeve, the lower end of the cylindrical spring is installed on a radial step of a valve rod through a spring seat, the upper end of the cylindrical spring is pressed at the lower end of the adjusting screw sleeve through a spring pressing cover, and the outer circular surface of the upper end of the valve rod is in movable fit with the inner hole of the adjusting screw sleeve.
In the technical scheme, the inner ring surface at the lower end of the annular adjusting plate is provided with a radial annular step, the annular table surface of the radial annular step is pressed on the upper end surface of the adjusting sleeve, and the inner ring wall is in movable fit with the outer ring surface of the adjusting sleeve.
In the above technical scheme, the valve gap up end is equipped with manual pressure relief device, manual pressure relief device includes: wrench, lifting rod, lifting plate and lifting nut, lifting plate one end is through hinged connection in the valve gap top, and lifting nut installs on the valve rod of lifting plate top, and the lifting rod passes through hinged mounting on the valve cap of lifting plate other end below, and the vertical fixed mounting of wrench is at the other end of lifting rod.
In the above technical scheme, set up the locating plate between lower spring holder and lifting nut, this locating plate passes through the bracing piece and installs on the valve gap, locating hole and the valve rod movable fit in locating plate center.
In the above technical scheme, an upper locating ring is arranged between the locating plate and the valve rod, and a lower locating ring is arranged between the valve rod and the valve rod.
The invention has the advantages that: the spring pressure setting device comprises a rough adjusting device and a fine adjusting device, the structure of the rough adjusting device comprises a butterfly spring, an adjusting sleeve, a guide plate and an annular adjusting plate, the compression amount of the butterfly spring is adjusted through adjusting the upper and lower positions of the annular adjusting plate, the valve clack setting pressure is set, the adjusting force is the pressure in the axial direction of a valve rod, the valve rod has no rotating torsion during the setting pressure adjustment, the valve clack and a valve seat sealing surface are not worn, the butterfly spring cannot be pressed to bend to cause valve rod blocking, the fine adjusting device realizes fine adjustment of the setting pressure, the precision of the setting pressure is improved, the spring force is small, the rotating torsion generated during adjustment is small, the rotating friction and the radial blocking phenomenon of the valve rod cannot be generated on the valve clack, the sealing performance is good, the setting pressure is accurate, the valve rod moves flexibly, and the valve clack is opened and closed reliably.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The high-temperature high-pressure safety valve shown in fig. 1 comprises a valve body 2, a valve seat 1, a valve clack 4, a guide sleeve 6, a valve cover 8, a valve rod 19 and a spring pressure setting device, wherein a lower adjusting ring 3 is arranged on the outer side of a sealing surface of the valve seat 1, an upper adjusting ring 5 is arranged on the outer circular surface of the lower end of the guide sleeve 6, the lower end of the valve body 2 is an inlet side, a middle flange is arranged at the upper end of the valve body, an outlet flange is arranged in the middle of the upper end of the valve body, the valve seat 1 is arranged at the inlet end of the valve body 2, the upper end of the valve seat 1 stretches into an inner cavity of the valve body 2, the upper end of the guide sleeve 6 is fixedly arranged between the valve cover 8 and the valve body 2, the valve clack 4 is arranged in the guide sleeve 6, the outer circular surface of the valve clack is in movable fit with the inner hole wall of the guide sleeve 6, the lower end of the valve clack 4 is provided with a sealing surface which forms a sealing with the valve clack, and the lower end of the valve rod 19 stretches into the guide sleeve 6 and is connected with the center of the back of the valve clack 4; the method is characterized in that: the spring pressure setting device consists of a rough adjusting device and a fine adjusting device; the coarse adjustment device comprises a belleville spring 17, an adjusting sleeve 22, a guide plate 21 and an annular adjusting plate 23, wherein the lower end of the belleville spring 17 is arranged on the upper end face of a lower spring seat 16, the lower end face of the lower spring seat 16 is pressed on a radial step of a valve rod 19, the lower end of the adjusting sleeve 22 penetrates through a guide hole of the guide plate 21 to be fixedly connected with the upper end of the belleville spring 17, the guide plate 21 is fixedly arranged on a valve cover 8 through an installing rod 18, a plurality of adjusting studs 24 are fixedly arranged on the upper end face of the guide plate 21, a plurality of installing holes are formed in an annular plane of the annular adjusting plate 23, the installing holes are arranged on the adjusting studs 24 through adjusting nuts, and an inner annular face of the lower end of the annular adjusting plate 23 is pressed on the upper end face of the adjusting sleeve 22; through adjusting the axial position of annular adjusting plate 23 on adjusting stud 24, promote adjusting sleeve 22 compression belleville spring 17, reach the setting to sealed vice setting pressure, only axial pressure in the adjustment process, avoid prior art adjustment process to produce rotation torsion to the wearing and tearing of valve clack sealing face and the crooked great radial force that produces the valve rod of spring, increase valve rod and remove frictional force and even lead to the valve rod to block the dead phenomenon. The fine tuning device comprises a cylindrical spring 20 and an adjusting screw sleeve 25, wherein the adjusting screw sleeve 25 is installed in a screw hole on the upper end face of the adjusting sleeve 22 by adopting external threads, the lower end of the adjusting screw sleeve stretches into an inner cavity of the adjusting sleeve 22, the lower end of the cylindrical spring 20 is installed on a radial step of a valve rod 19 through a spring seat, the upper end of the cylindrical spring is pressed at the lower end of the adjusting screw sleeve 25 through a spring gland, and the outer circular face of the upper end of the valve rod 19 is in movable fit with an inner hole of the adjusting screw sleeve 25. By adjusting the position of the adjusting screw sleeve 25 on the adjusting sleeve 22, the compression force of the cylindrical spring 20 is adjusted, so that fine adjustment of the pressure setting value is realized, and the accuracy of the setting pressure value is provided.
The inner ring surface of the lower end of the annular adjusting plate 23 is provided with a radial annular step, the annular table surface of the radial annular step is pressed on the upper end surface of the adjusting sleeve 22, the inner circular wall is in movable fit with the outer circular surface of the adjusting sleeve 22, and the radial positioning of the adjusting sleeve 22 is increased.
The valve gap 8 up end is equipped with manual pressure relief device, manual pressure relief device includes wrench 9, lifting rod 10, lifting plate 11 and lifting nut 12, and lifting plate 11 one end is passed through the hinge and is connected on the stand of valve gap 8 top, and lifting nut 12 fixed mounting is on the valve rod 19 of lifting plate 11 top, and lifting rod 10 one end is installed on valve gap 8 of lifting plate 11 other end below through the hinge, and its up end is in contact with lifting plate 11 lower terminal surface top, and wrench 9 vertical fixed mounting is at the other end of lifting rod 10. When the valve clack is required to be opened manually for pressure relief, the lifting rod 10 is driven to drive the lifting plate 11 to move upwards, the lifting plate 11 applies upward acting force to the lifting nut 12 and the valve rod 19, and the valve clack 4 is opened by overcoming the elasticity of the belleville spring 17 and the cylindrical spring 20.
A positioning plate 14 is arranged between the lower spring seat 16 and the lifting nut 12, the positioning plate 14 is arranged on the valve cover 8 through a supporting rod 13, a positioning hole in the center of the positioning plate 14 is in movable fit with the valve rod 19, and radial positioning and guiding of the valve rod 19 are improved.
An upper positioning ring 15 is arranged between the positioning plate 14 and the valve rod 19, a lower positioning ring 7 is arranged between the valve cover 8 and the valve rod 19, and the upper positioning ring 15 and the lower positioning ring 7 are in movable fit with the outer circular surface of the valve rod 19.
In the present embodiment, the guide plate 21 is fixedly mounted on the positioning plate 14 through the mounting rod 18 and then mounted on the valve cover 8 through the support rod 13, as in the case where the guide plate 21 is directly fixedly mounted on the valve cover 8 through the mounting rod 18.
Claims (5)
1. The utility model provides a high temperature high pressure relief valve, including valve body (2), disk seat (1), valve clack (4), uide bushing (6), valve gap (8), valve rod (19), spring pressure setting device, valve seat (1) are installed at valve body (2) entrance point, valve seat (1) upper end stretches into valve body (2) inner chamber, uide bushing (6) upper end fixed mounting is between valve gap (8) and valve body (2), valve clack (4) set up in uide bushing (6), its outer disc and uide bushing (6) inner hole wall movable fit, valve clack (4) lower extreme is equipped with the valve clack sealed face that forms sealedly with the disk seat sealed face, valve rod (19) lower extreme stretches into in uide bushing (6) and connects valve clack (4) back center department. The method is characterized in that: the spring pressure setting device consists of a rough adjusting device and a fine adjusting device; the coarse adjustment device comprises a disc spring (17), an adjusting sleeve (22), a guide plate (21) and an annular adjusting plate (23), wherein the lower end of the disc spring (17) is installed on the upper end face of a lower spring seat (16), the lower end face of the lower spring seat (16) is pressed on a radial step of a valve rod (19), the lower end of the adjusting sleeve (22) penetrates through a guide hole of the guide plate (21) to be fixedly connected with the upper end of the disc spring (17), the guide plate (21) is fixedly installed on a positioning plate (14) through an installing rod (18), the positioning plate (14) is fixedly installed on a valve cover (8) through a supporting rod (13), a plurality of adjusting studs (24) are fixedly installed on the upper end face of the guide plate (21), a plurality of installing holes are formed in an annular plane of the annular adjusting plate (23), the installing holes are installed on the adjusting studs (24) through adjusting nuts, and the inner annular face of the lower end of the annular adjusting plate (23) is pressed on the upper end face of the adjusting sleeve (22). The fine adjustment device comprises a cylindrical spring (20) and an adjusting screw sleeve (25), wherein the adjusting screw sleeve (25) is installed in a screw hole on the upper end face of the adjusting sleeve (22) through external threads, the lower end of the adjusting screw sleeve extends into an inner cavity of the adjusting sleeve (22), the lower end of the cylindrical spring (20) is installed on a radial step of a valve rod (19) through a spring seat, the upper end of the cylindrical spring is pressed at the lower end of the adjusting screw sleeve (25) through a spring pressing cover, and the outer circular face of the upper end of the valve rod (19) is in movable fit with an inner hole of the adjusting screw sleeve (25).
2. The high temperature and high pressure relief valve according to claim 1 wherein: the inner annular surface of the lower end of the annular adjusting plate (23) is provided with a radial annular step, the annular table surface of the radial annular step is pressed on the upper end surface of the adjusting sleeve (22), and the inner circular wall is in movable fit with the outer circular surface of the adjusting sleeve (22).
3. The high temperature and high pressure relief valve according to claim 1 or 2, wherein: the valve gap (8) up end is equipped with manual pressure relief device, manual pressure relief device includes wrench (9), lifting rod (10), lifting plate (11) and lifting nut (12), lifting plate (11) one end is passed through hinge connection on the stand of valve gap (8) top, lifting nut (12) fixed mounting is on valve rod (19) of lifting plate (11) top, lifting rod (10) one end is installed on valve gap (8) of lifting plate (11) other end below through hinge type, its up end and lifting plate (11) lower terminal surface top touch, the other end of wrench (9) vertical fixed mounting at lifting rod (10).
4. A high temperature high pressure relief valve according to claim 3 wherein: a positioning plate (14) is arranged between the lower spring seat (16) and the lifting nut (12), the positioning plate (14) is arranged on the valve cover (8) through a supporting rod (13), and a positioning hole in the center of the positioning plate (14) is in movable fit with the outer circular surface of the valve rod (19).
5. The high temperature and high pressure relief valve according to claim 4 wherein: an upper positioning ring (15) is arranged between the positioning plate (14) and the valve rod (19), a lower positioning ring (7) is arranged between the valve cover (8) and the valve rod (19), and the upper positioning ring (15) and the lower positioning ring (7) are in movable fit with the outer circular surface of the valve rod (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910947064.5A CN110541955B (en) | 2019-10-08 | 2019-10-08 | High-temperature high-pressure safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910947064.5A CN110541955B (en) | 2019-10-08 | 2019-10-08 | High-temperature high-pressure safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110541955A CN110541955A (en) | 2019-12-06 |
| CN110541955B true CN110541955B (en) | 2024-01-26 |
Family
ID=68715246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910947064.5A Active CN110541955B (en) | 2019-10-08 | 2019-10-08 | High-temperature high-pressure safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110541955B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576768B (en) * | 2020-12-21 | 2023-01-20 | 纽威石油设备（苏州）有限公司 | Adjustable pressure release valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53144535U (en) * | 1977-04-20 | 1978-11-14 | ||
| JPH08261345A (en) * | 1995-03-24 | 1996-10-11 | Toyota Auto Body Co Ltd | Relief valve |
| US6691512B1 (en) * | 2002-04-03 | 2004-02-17 | Hydro-Gear Limited Partnership | Hydraulic transmission with combination check valve and pressure release valve |
| CN203641612U (en) * | 2013-12-12 | 2014-06-11 | 浙江派沃自控仪表有限公司 | Self-operated metallic bellows regulating valve |
| CN107143678A (en) * | 2017-05-15 | 2017-09-08 | 永嘉县信诚科技服务有限公司 | High-temperature safety valve |
| CN108644434A (en) * | 2018-04-28 | 2018-10-12 | 北京机械设备研究所 | A kind of screw thread inserting type buffering pressure limiting valve |
| CN210770474U (en) * | 2019-10-08 | 2020-06-16 | 永一阀门集团有限公司 | High-temperature high-pressure spring type safety valve |
-
2019
- 2019-10-08 CN CN201910947064.5A patent/CN110541955B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53144535U (en) * | 1977-04-20 | 1978-11-14 | ||
| JPH08261345A (en) * | 1995-03-24 | 1996-10-11 | Toyota Auto Body Co Ltd | Relief valve |
| US6691512B1 (en) * | 2002-04-03 | 2004-02-17 | Hydro-Gear Limited Partnership | Hydraulic transmission with combination check valve and pressure release valve |
| CN203641612U (en) * | 2013-12-12 | 2014-06-11 | 浙江派沃自控仪表有限公司 | Self-operated metallic bellows regulating valve |
| CN107143678A (en) * | 2017-05-15 | 2017-09-08 | 永嘉县信诚科技服务有限公司 | High-temperature safety valve |
| CN108644434A (en) * | 2018-04-28 | 2018-10-12 | 北京机械设备研究所 | A kind of screw thread inserting type buffering pressure limiting valve |
| CN210770474U (en) * | 2019-10-08 | 2020-06-16 | 永一阀门集团有限公司 | High-temperature high-pressure spring type safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110541955A (en) | 2019-12-06 |
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