CN108869819B - High-temperature accurate double-regulation safety valve - Google Patents
High-temperature accurate double-regulation safety valve Download PDFInfo
- Publication number
- CN108869819B CN108869819B CN201811018413.7A CN201811018413A CN108869819B CN 108869819 B CN108869819 B CN 108869819B CN 201811018413 A CN201811018413 A CN 201811018413A CN 108869819 B CN108869819 B CN 108869819B
- Authority
- CN
- China
- Prior art keywords
- valve
- balancing weight
- seat
- sliding sleeve
- sealing
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 59
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims description 32
- 230000009467 reduction Effects 0.000 claims description 17
- 125000006850 spacer group Chemical group 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000002035 prolonged effect Effects 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
- F16K17/12—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side weight-loaded
-
- 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
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a high-temperature accurate double-regulation safety valve which comprises a valve body, a valve cover and a medium channel, wherein the valve cover is covered on the valve body, the medium channel is arranged in the valve body, a valve seat is arranged in the valve body, a valve rod extending into the valve body is fixedly arranged on the inner wall of the valve cover, a sliding sleeve sliding along the axial direction of the valve rod is sleeved on the valve rod, a valve core matched with the valve seat to realize sealing is fixedly arranged at one end of the sliding sleeve facing the valve seat, a first balancing weight for pressing the valve core is sleeved on the sliding sleeve, and at least one first balancing weight is arranged along the axial direction of the valve rod. The invention has the following advantages and effects: the invention can prolong the service life and reduce the potential safety hazard.
Description
Technical Field
The invention relates to a valve, in particular to a high-temperature accurate double-regulation 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 safety valve in the prior art comprises a spring type safety valve, and the spring type safety valve adopts spring direct load, when the safety valve is used under a low-pressure working condition, the rigidity of the spring is low and the working stability is poor, especially when the temperature of a medium rises, the rigidity of the spring can be reduced along with the rise of the temperature, so that the change of a positive fixed pressure value is obvious, adverse effects are easy to generate, great influence is brought to the use safety, and great potential safety hazards exist.
Disclosure of Invention
The invention aims to provide a high-temperature accurate double-regulation safety valve, which can reduce potential safety hazards.
The technical aim of the invention is realized by the following technical scheme: the utility model provides a high temperature accurate double control relief valve, includes valve body, lid locate the valve gap of valve body and set up in the inside medium passageway of valve body, be equipped with the disk seat in the valve body, the valve rod that extends into the valve body is interior has set firmly to the valve gap inner wall, the cover is equipped with the sliding sleeve that slides along the valve rod axial on the valve rod, the one end of sliding sleeve towards the disk seat has set firmly the case that the cooperation disk seat realized sealedly, the cover is equipped with the first balancing weight of holding the case on the sliding sleeve, the axial of valve rod is provided with at least one along first balancing weight.
By adopting the technical scheme, the valve core is driven by the sliding sleeve to slide on the valve rod and matched with the valve seat to realize on-off of a medium, and the first balancing weight arranged on the sliding sleeve applies gravity to the valve core, so that the valve core is sealed on the valve seat; when the pressure in the medium channel is greater than the gravity applied by the first balancing weight to the valve core, the medium pushes the valve core to be far away from the valve seat, so that the conduction of the medium is realized, and the set value of the valve is changed by changing the gravity applied to the valve core through changing the number of the first balancing weights sleeved on the sliding sleeve. The setting mode is not influenced by the spring stiffness and the medium temperature, and can realize accurate and stable control and reduce potential safety hazards. Vibration caused by a medium in the flowing process can influence the service life of the spring, and the compressed spring can generate extremely large rebound force, and the rebound force drives the valve core to act on the valve seat, so that the sealing performance of the valve core and the valve seat in cooperation is greatly influenced; the setting of this scheme can not receive the influence of medium vibration, has better life, and is less to the effort that the case applyed in sealed in-process, can offset the gravity of case in whereabouts in-process through the buoyancy of medium to make this kind of setting mode can reach better sealed effect.
Further provided is that: the sliding sleeve is sleeved with a pressing plate which is arranged above the first balancing weight and used for pressing the first balancing weight, the sliding sleeve is sleeved with a nut which is arranged above the pressing plate and used for pressing the pressing plate, and the nut is connected with the sliding sleeve through threads.
Through adopting above-mentioned technical scheme, the stepless regulation is realized to the threaded connection mode between nut and the sliding sleeve, and the nut passes through the pressure disk and carries out the application of force to first balancing weight, and the case that the cooperation set up again locks first balancing weight, reduces the vibration that first balancing weight produced under the impact effect of medium, promotes stability.
Further provided is that: the valve is characterized in that a gap is formed between the inner peripheral wall of the sliding sleeve and the outer peripheral wall of the valve rod, annular protrusions surrounding the center of the valve rod are fixedly arranged on the outer peripheral wall of the valve rod, at least two annular protrusions are arranged at intervals along the axial direction of the valve rod, the annular protrusions are in contact with the inner peripheral wall of the sliding sleeve, and vent holes for communicating the inner space of the valve body are formed in the position, located between the valve core and the valve rod, of the sliding sleeve.
By adopting the technical scheme, the two annular protrusions contact the inner peripheral wall of the sliding sleeve, limit the moving sliding sleeve, and ensure the moving stability of the sliding sleeve; the arrangement reduces the contact area between the two, thereby improving the smoothness of the sliding sleeve movement.
Further provided is that: the valve core is equipped with the first sealed face of inwards sunk towards the one side of disk seat, be equipped with the first guide inclined plane of transition between the peripheral wall of first sealed face and valve core, the terminal surface of disk seat towards the valve core is equipped with the second sealed face that outwards protrudes and cooperates first sealed face to realize sealing, be equipped with the second guide inclined plane of transition between the peripheral wall of second sealed face and disk seat, when the sealed second sealed face of first sealed face, be formed with the clearance between first guide inclined plane and the second guide inclined plane.
Through adopting above-mentioned technical scheme, the fluid medium acts on sealed first sealed face through the disk seat, and when the fluid medium drive first sealed face breaks away from the second sealed face, the fluid medium is towards the even outward-shot diffusion all around under the effect of first guide inclined plane for the effort that fluid medium applyed the case can concentrate the centre of a circle position of case, prevents that the case from taking place the slope phenomenon at the removal in-process, carries out further protection to the case that opens. And this kind of setting can make the sliding sleeve in sliding receive even drive power, prevents to take place partial wear between sliding sleeve and the valve rod, promotes life.
Further provided is that: the valve core is sleeved with an annular sealing seat which axially slides along the valve rod and is matched with the valve seat to realize sealing, one surface of the sealing seat back to the valve seat extends to be provided with a limiting ring for limiting the valve core to be separated from the sealing seat, the inner peripheral wall of the sealing seat is provided with a water outlet hole communicated with a medium channel, when the valve core abuts against the limiting ring, the water outlet hole is communicated with the medium channel, a first balancing weight is sleeved with a second balancing weight used for pressing the sealing seat, and at least one second balancing weight is arranged along the axial direction of the valve rod.
By adopting the technical scheme, the valve is provided with two preset values by the arrangement of the first balancing weight and the second balancing weight, and when the pressure of the fluid medium is greater than the fixed value of the first balancing weight and less than the fixed value of the second balancing weight, the fluid medium drives the valve core to separate from the valve seat, so that the fluid medium flows out through the water outlet; when the pressure of the fluid medium is larger than the fixed value added by the first balancing weight and the second balancing weight, the fluid medium drives the valve core to prop against the limiting ring, and the valve core moves the sealing seat to be separated from the valve seat through the limiting ring, so that the flow rate of the fluid medium is increased, and the fluid medium has better flowing force. Through the arrangement, resonance on the valve body when the pressure of the fluid medium is overlarge can be prevented, so that the service life of the valve is prolonged; the valve control range can be further improved by the aid of the valve control device, and the valve control device is better in practicability.
Further provided is that: a spacer bush is arranged between the first balancing weight and the second balancing weight, the spacer bush extends along the axial direction of the valve rod and is fixedly connected with the limiting ring, and an elastic ring for abutting against the spacer bush is fixedly arranged on one face, facing the spacer bush, of the second balancing weight.
By adopting the technical scheme, the arrangement of the spacer bush prevents interference between the first balancing weight and the second balancing weight in the moving process, so that accurate regulation and control of a fluid medium are ensured; the elastic ring is arranged to compress the second balancing weight and the spacer bush, and the second balancing weight is locked.
Further provided is that: the valve body is fixedly provided with a convex ring which contacts the peripheral wall of the sealing seat and is in sliding fit with the sealing seat.
Through adopting above-mentioned technical scheme, the setting of bulge loop carries out further spacing to the sealing seat in moving, ensures the stability of removal.
Further provided is that: the sealing seat inner peripheral wall is located the orthographic projection position between the first guide inclined plane and the second guide inclined plane and is fixedly provided with a noise reduction ring, a plurality of noise reduction channels are distributed on the noise reduction ring, one end of each noise reduction channel faces the position between the first guide inclined plane and the second guide inclined plane, the other end of each noise reduction channel faces the valve cover, and the middle section of each noise reduction channel faces the inner peripheral wall of the sealing seat and is bent.
Through adopting above-mentioned technical scheme, when the pressure of fluid medium is greater than the fixed value of first balancing weight and is less than the fixed value of second balancing weight, fluid medium flows from first guide inclined plane and second guide inclined plane, and partly enters into the passageway of making an uproar falls, flows in the passageway of making an uproar from making an uproar and flows through the apopore for reduce the noise that fluid medium produced in the flow process, and this kind of setting can reduce the impact that fluid medium caused to the sealing seat, promotes the leakproofness between sealing seat and the disk seat two.
Further provided is that: the first balancing weight and the second balancing weight are both wrapped with corrosion-resistant jackets.
Through adopting above-mentioned technical scheme, the setting of corrosion-resistant clamp cover makes the material of first balancing weight and second balancing weight need not special metal counter weight material to make for reduce the manufacturing cost of enterprise.
In summary, the invention has the following beneficial effects: the invention can prolong the service life and reduce the potential safety hazard.
Drawings
FIG. 1 is a cross-sectional view of an embodiment;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is an enlarged view of a portion B in fig. 1.
In the figure: 1. a valve body; 2. a valve cover; 3. a media channel; 4. a valve seat; 5. a valve stem; 6. a sliding sleeve; 7. a valve core; 8. a first balancing weight; 9. a pressure plate; 10. a nut; 11. an annular protrusion; 12. a vent hole; 13. a first sealing surface; 14. a first guide slope; 15. a second sealing surface; 16. a second guide slope; 17. a sealing seat; 18. a limiting ring; 19. a water outlet hole; 20. a second balancing weight; 21. a spacer bush; 22. an elastic ring; 23. a convex ring; 24. a noise reduction ring; 25. a noise reduction channel; 26. corrosion-resistant jacket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 3, a high-temperature precise double-regulation safety valve comprises a valve body 1, a valve cover 2 covered on the valve body 1 and a medium channel 3 arranged in the valve body 1, wherein a bolt penetrates through the valve cover 2 to be in threaded connection with the valve body 1, so that the valve cover 2 is fixed on the valve body 1; the top position of valve gap 2 inner wall is integrative to be provided with the valve rod 5 that extends into valve body 1, and the fixed disk seat 4 that is provided with of being located under valve rod 5 in the medium passageway 3, and the cover is equipped with sliding sleeve 6 on the valve rod 5, and sliding sleeve 6 realizes sliding along the axial of valve rod 5, and the fixed case 7 that realizes sealedly that cooperates disk seat 4 that is provided with of lower extreme of sliding sleeve 6, the diameter of case 7 is greater than the diameter of sliding sleeve 6. The sliding sleeve 6 is sleeved with an annular first balancing weight 8, the bottom of the first balancing weight 8 is abutted against the upper surface of the valve core 7, and at least one first balancing weight 8 is arranged along the axial direction of the valve rod 5; an annular pressure plate 9 is sleeved on the sliding sleeve 6 above the first balancing weight 8, a nut 10 is sleeved on the sliding sleeve 6 above the pressure plate 9, and the nut 10 is in threaded connection with the sliding sleeve 6.
One surface of the valve core 7 facing the valve seat 4 is recessed inwards to form a first sealing surface 13, a first guide inclined surface 14 is formed by transition between the first sealing surface 13 and the peripheral wall of the valve core 7, one end surface of the valve seat 4 facing the valve core 7 is outwardly protruded to form a second sealing surface 15, and the second sealing surface 15 is matched with the first sealing surface 13 to realize sealing; the second sealing surface 15 and the peripheral wall of the valve seat 4 are transitionally provided to form a second guiding inclined surface 16, and when the first sealing surface 13 abuts against the second sealing surface 15, a gap is formed between the first guiding inclined surface 14 and the second guiding inclined surface 16.
The valve core 7 is sleeved with a sealing seat 17 with an annular cross section, the valve core 7 slides in the inner circle of the sealing seat 17, and the lower end surface of the sealing seat 17 is matched with the valve seat 4 to realize sealing; the upper end of the sealing seat 17 is integrally provided with an inwards-contracted limiting ring 18, when the valve core 7 moves towards the limiting ring 18, the upper end face of the valve core 7 is abutted against the lower end face of the limiting ring 18, the inner peripheral wall of the sealing seat 17 is provided with a water outlet 19 communicated with the medium channel 3, and when the valve core 7 is abutted against the limiting ring 18, the water outlet 19 is communicated with the medium channel 3. The inner peripheral wall of the sealing seat 17 is provided with a noise reduction ring 24, the noise reduction ring 24 is fixedly welded with the valve seat 4, a plurality of noise reduction channels 25 are distributed on the noise reduction ring 24, one end of each noise reduction channel 25 faces to the position between the first guide inclined plane 14 and the second guide inclined plane 16, and the other end of each noise reduction channel faces to the valve cover 2; the middle section of the noise reduction channel 25 is bent towards the inner peripheral wall direction of the sealing seat 17 to form a bent arc section, the valve body 1 is integrally provided with a convex ring 23 which contacts the outer peripheral wall of the sealing seat 17, and the sealing seat 17 slides on the convex ring 23.
A gap is formed between the inner peripheral wall of the sliding sleeve 6 and the outer peripheral wall of the valve rod 5, annular protrusions 11 surrounding the circle center of the valve rod 5 are integrally arranged on the outer peripheral wall of the valve rod 5, at least two annular protrusions 11 are arranged at intervals along the axial direction of the valve rod 5, the annular protrusions 11 are in contact with the inner peripheral wall of the sliding sleeve 6, and vent holes 12 communicated with the inner space of the valve body 1 are arranged below the lower end surface of the valve rod 5 on the inner peripheral wall of the sliding sleeve 6. The upper end face of the limiting ring 18 is integrally provided with a spacer 21 which extends towards the valve cover 2 and is sleeved on the periphery of the first balancing weight 8.
The spacer bush 21 is sleeved with a ring-shaped second balancing weight 20, the lower end face of the second balancing weight 20 is abutted against the upper end face of the sealing seat 17, and at least one second balancing weight 20 is arranged along the axial direction of the spacer bush 21; the elastic ring 22 abutting against the spacer 21 is fixedly adhered to one surface of the second balancing weight 20 facing the spacer 21, the elastic ring 22 can be made of a corrosion-resistant rubber material, particularly fluororubber, the first balancing weight 8 and the second balancing weight 20 are wrapped with a corrosion-resistant jacket 26, and the corrosion-resistant jacket 26 can be made of polytetrafluoroethylene plastic.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (5)
1. The utility model provides a high temperature accurate double control relief valve, includes valve body (1), lid locate valve gap (2) of valve body (1) and set up in inside medium passageway (3) of valve body (1), be equipped with disk seat (4), its characterized in that in valve body (1): the valve is characterized in that a valve rod (5) extending into the valve body (1) is fixedly arranged on the inner wall of the valve cover (2), a sliding sleeve (6) sliding along the axial direction of the valve rod (5) is sleeved on the valve rod (5), a valve core (7) matched with the valve seat (4) to realize sealing is fixedly arranged at one end of the sliding sleeve (6) facing the valve seat (4), a first balancing weight (8) for pressing the valve core (7) is sleeved on the sliding sleeve (6), and at least one first balancing weight (8) is arranged along the axial direction of the valve rod (5);
the sliding sleeve (6) is sleeved with a pressing plate (9) which is positioned above the first balancing weight (8) and used for pressing the first balancing weight (8), the sliding sleeve (6) is sleeved with a nut (10) which is positioned above the pressing plate (9) and used for pressing the pressing plate (9), and the nut (10) is in threaded connection with the sliding sleeve (6);
a gap is formed between the inner peripheral wall of the sliding sleeve (6) and the outer peripheral wall of the valve rod (5), annular protrusions (11) surrounding the center of the valve rod (5) are fixedly arranged on the outer peripheral wall of the valve rod (5), at least two annular protrusions (11) are arranged at intervals along the axial direction of the valve rod (5), the annular protrusions (11) are in contact with the inner peripheral wall of the sliding sleeve (6), and vent holes (12) which are communicated with the inner space of the valve body (1) are formed in the sliding sleeve (6) and are positioned between the valve core (7) and the valve rod (5);
one surface of the valve core (7) facing the valve seat (4) is provided with a first sealing surface (13) which is concave inwards, a first guiding inclined surface (14) which is in transition is arranged between the first sealing surface (13) and the peripheral wall of the valve core (7), the end surface of the valve seat (4) facing the valve core (7) is provided with a second sealing surface (15) which is convex outwards and matched with the first sealing surface (13) to realize sealing, a second guiding inclined surface (16) which is in transition is arranged between the second sealing surface (15) and the peripheral wall of the valve seat (4), and when the first sealing surface (13) seals the second sealing surface (15), a gap is formed between the first guiding inclined surface (14) and the second guiding inclined surface (16);
the valve core (7) is sleeved with an annular sealing seat (17) which axially slides along the valve rod (5) and is matched with the valve seat (4) to realize sealing, one surface of the sealing seat (17) opposite to the valve seat (4) extends to be provided with a limiting ring (18) for limiting the valve core (7) to be separated from the sealing seat (17), the inner peripheral wall of the sealing seat (17) is provided with a water outlet (19) communicated with a medium channel (3), when the valve core (7) is abutted against the limiting ring (18), the water outlet (19) is communicated with the medium channel (3), a first balancing weight (8) is sleeved with a second balancing weight (20) for pressing the sealing seat (17), and at least one second balancing weight (20) is arranged along the axial direction of the valve rod (5).
2. The high temperature precise double-regulation safety valve according to claim 1, wherein: spacer bush (21) is arranged between the first balancing weight (8) and the second balancing weight (20), the spacer bush (21) extends along the axial direction of the valve rod (5) and is fixedly connected with the limiting ring (18), and an elastic ring (22) used for propping against the spacer bush (21) is fixedly arranged on one surface of the second balancing weight (20) facing the spacer bush (21).
3. The high temperature precise double-regulation safety valve according to claim 1, wherein: a convex ring (23) which is contacted with the peripheral wall of the sealing seat (17) and is in sliding fit with the sealing seat is fixedly arranged on the valve body (1).
4. The high temperature precise double-regulation safety valve according to claim 1, wherein: the front projection position that the inner peripheral wall of sealing seat (17) is located between first guide inclined plane (14) and second guide inclined plane (16) has set firmly noise reduction ring (24), noise reduction ring (24) are last to be distributed have a plurality of passageway (25) of making an uproar that fall, the one end of passageway (25) of making an uproar falls towards the position between first guide inclined plane (14) and second guide inclined plane (16) both, the other end sets up towards valve gap (2), the middle section of passageway (25) of making an uproar falls towards the crooked setting of inner peripheral wall direction of sealing seat (17).
5. The high temperature precise double-regulation safety valve according to claim 1, wherein: the first balancing weight (8) and the second balancing weight (20) are both wrapped with a corrosion-resistant jacket (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811018413.7A CN108869819B (en) | 2018-09-03 | 2018-09-03 | High-temperature accurate double-regulation safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811018413.7A CN108869819B (en) | 2018-09-03 | 2018-09-03 | High-temperature accurate double-regulation safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108869819A CN108869819A (en) | 2018-11-23 |
| CN108869819B true CN108869819B (en) | 2023-10-31 |
Family
ID=64323100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811018413.7A Active CN108869819B (en) | 2018-09-03 | 2018-09-03 | High-temperature accurate double-regulation safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108869819B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220875A (en) * | 2008-01-28 | 2008-07-16 | 李家聪 | Flux information valve |
| CN201412565Y (en) * | 2009-06-04 | 2010-02-24 | 王卫平 | Dead weight two-way check valve |
| CN106151606A (en) * | 2016-07-01 | 2016-11-23 | 徐州江宏阀门有限公司 | A kind of check-valves |
| CN206738647U (en) * | 2017-04-18 | 2017-12-12 | 宁波凯鑫泵阀制造有限公司 | A kind of Vertical Lift Check Valves structure |
| CN208859016U (en) * | 2018-09-03 | 2019-05-14 | 唐工阀门集团有限公司 | The accurate double regulation safety valves of high temperature |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10060311A1 (en) * | 2000-12-04 | 2002-06-13 | Richter Chemie Tech Itt Gmbh | safety valve |
-
2018
- 2018-09-03 CN CN201811018413.7A patent/CN108869819B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220875A (en) * | 2008-01-28 | 2008-07-16 | 李家聪 | Flux information valve |
| CN201412565Y (en) * | 2009-06-04 | 2010-02-24 | 王卫平 | Dead weight two-way check valve |
| CN106151606A (en) * | 2016-07-01 | 2016-11-23 | 徐州江宏阀门有限公司 | A kind of check-valves |
| CN206738647U (en) * | 2017-04-18 | 2017-12-12 | 宁波凯鑫泵阀制造有限公司 | A kind of Vertical Lift Check Valves structure |
| CN208859016U (en) * | 2018-09-03 | 2019-05-14 | 唐工阀门集团有限公司 | The accurate double regulation safety valves of high temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108869819A (en) | 2018-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201547254U (en) | High-pressure cage adjusting valve | |
| CN108869819B (en) | High-temperature accurate double-regulation safety valve | |
| CN112555469B (en) | Constant specific pressure large flow safety valve | |
| CN202158200U (en) | Strong corrosion resistant single-seat adjusting valve | |
| KR20190139947A (en) | Valve body for annular valve and annular valve | |
| KR101856161B1 (en) | Water Hammer Arrester | |
| US2817545A (en) | Valve stem seal | |
| CN107917162B (en) | Adjustable oil pressure buffer with automatic compensation function | |
| CN210738974U (en) | Overflow valve of difficult leakage | |
| CN102305289A (en) | Gap seal hydraulic cylinder based on deformable piston ring | |
| CN208859016U (en) | The accurate double regulation safety valves of high temperature | |
| CN208919381U (en) | Split type metal soft sealing ball valve | |
| CN203098960U (en) | Forged anti-collision check valve | |
| CN210716072U (en) | Fixed ball valve | |
| RU181157U1 (en) | Valve with seal for pump | |
| RU181151U1 (en) | Valve seat for pump | |
| CN201382193Y (en) | Valve seat for ball valve and ball valve using same | |
| CN217784308U (en) | One-way valve with novel structure | |
| CN220980352U (en) | Safety valve with filler | |
| CN203718069U (en) | Ammonia bellows safety valve | |
| CN205479466U (en) | Unsteady ball valve seating structure | |
| CN210343902U (en) | Hydraulic valve with steel ball positioning structure | |
| CN210687124U (en) | Stop check valve | |
| CN204922081U (en) | Ball valve is adjusted to two way seal V type | |
| CN219139952U (en) | Compact pilot-operated safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |