CN110985729A - Ultrahigh pressure overflow valve - Google Patents
Ultrahigh pressure overflow valve Download PDFInfo
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- CN110985729A CN110985729A CN202010016174.2A CN202010016174A CN110985729A CN 110985729 A CN110985729 A CN 110985729A CN 202010016174 A CN202010016174 A CN 202010016174A CN 110985729 A CN110985729 A CN 110985729A
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- main valve
- valve
- guide sleeve
- disc spring
- seat
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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
- F16K17/02—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
- F16K17/044—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 more than one spring
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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
- F16K17/02—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
- F16K17/048—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 combined with other safety valves, or with pressure control devices
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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
- F16K17/02—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
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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
- F16K17/02—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
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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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
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
An ultrahigh-pressure overflow valve is characterized in that a main valve seat is assembled in a valve body and is tightly pressed by a main valve core guide sleeve, a main valve bonnet fixes the main valve core guide sleeve on the main valve seat through threaded connection, the main valve core is matched with the main valve seat, a lower disc spring seat is positioned above the main valve core, a disc spring assembly is positioned above the lower disc spring seat, an upper disc spring seat is arranged above the disc spring assembly, the upper disc spring seat is fixed through a main valve adjusting handle in threaded connection with the main valve bonnet, a disc spring guide sleeve is arranged outside the disc spring assembly, the disc spring guide sleeve is tightly pressed on the lower disc spring seat through a disc spring guide sleeve reset spring, a safety valve bonnet fixes the safety valve core guide sleeve on the safety valve seat through threaded connection, a safety valve core is matched with the safety valve seat, a spring is arranged on the right side of the safety valve core, a spring seat is arranged on the, the safety pressure of the system can be adjusted by adjusting the safety valve adjusting handle.
Description
Technical Field
The invention relates to a hydraulic element technology, in particular to an ultrahigh pressure overflow valve technology.
Background
The application of superhigh pressure technique has increased gradually, the overflow valve is widely used as system pressure regulating element, the pressure that relates in the engineering application is below 40MPa usually, consequently in the superhigh pressure field technique not mature yet, ordinary design is not suitable for superhigh pressure operational environment, in actual work, the pressure regulating spring and the pressure regulating spring outside part of superhigh pressure overflow valve easily produce friction and jamming phenomenon, and the friction and the jamming phenomenon of pressure regulating spring cause the unstability of system pressure easily, the phenomenon such as pressure rises violently appears, seriously influence user's security.
The prior published patent is searched to find that the research on the aspect of the ultra-high pressure overflow valve comprises the following steps: [1] an ultrahigh-pressure overflow valve (P) CN106286918A, 2017-01-04, which is a structure of the ultrahigh-pressure overflow valve.
The related data provides a useful reference for the design of the ultrahigh pressure overflow valve, but the design has the following defects: a leakage hole is not arranged at the high-pressure inlet joint, so that potential safety hazards exist; the force application component is a spring, and the rigidity of the spring is not easy to control under the condition of ultrahigh pressure; the main valve core is not provided with a return spring; the adjusting screw is in surface contact with the spring seat; the outer side of the pressure regulating spring is not provided with a guide sleeve; leakage water generated by sealing failure cannot be discharged; a solution to infinitely adjust the maximum pressure; no oil filler hole is provided for lubricating the parts with relative motion.
Disclosure of Invention
The invention aims to provide the ultrahigh pressure overflow valve with higher safety coefficient and wider working pressure range.
The invention relates to an ultrahigh pressure overflow valve, which comprises a main valve, a safety valve and a valve body 1, wherein the main valve comprises a main valve seat 2, a main valve spool guide sleeve 3, a main valve spool 4, a main valve reset spring 5, a lower disc spring seat 6, a disc spring assembly 7, a main valve bonnet 8, a disc spring guide sleeve reset spring 9, a main valve adjusting handle 10, a main valve adjusting handle limit nut 11, an upper disc spring seat 12 and a disc spring guide sleeve 13, and the safety valve comprises a safety valve seat 14, a safety valve spool guide sleeve 15, a safety valve spool 16, a safety valve adjusting handle 17, a safety valve bonnet 18, a spring seat 19, a spring 20 and a sealing part; the safety valve core 16 is arranged in the safety valve core guide sleeve 15, the safety valve core 16 is matched with the safety valve seat 14, high-pressure sealing is realized through a hard sealing structure, and the high-pressure inlet 1c and the safety overflow outlet 1e are separated; a main valve reset spring 5 is arranged between the main valve core 4 and the main valve core guide sleeve 3; the main valve core 4 is arranged in the main valve core guide sleeve 3, the main valve core 4 is matched with the main valve seat 2, high-pressure sealing is realized through hard sealing, and a high-pressure inlet 1c and a low-pressure outlet 1a are separated; the main valve seat 2 is assembled in the valve body 1, the main valve spool guide sleeve 3 tightly presses the main valve seat 2, the main valve bonnet 8 is connected with the valve body 1 through threads and tightly presses the main valve spool guide sleeve 3, and an oil injection hole 8a is formed in the main valve bonnet 8; the relief valve cover 18 is provided with a through-hole 18 a.
The invention has the advantages that: the main valve seat of the invention is assembled in the valve body and is pressed by a main valve core guide sleeve, a main valve bonnet fixes the main valve core guide sleeve on the main valve seat through threaded connection, the main valve core is matched with the main valve seat, a lower disc spring seat is positioned above the main valve core, a disc spring assembly is positioned above the lower disc spring seat, an upper disc spring seat is arranged above the disc spring assembly, the upper disc spring seat is fixed through a main valve adjusting handle which is connected with the main valve bonnet through threads, a disc spring guide sleeve is arranged outside the disc spring assembly, the disc spring guide sleeve is pressed tightly on the lower disc spring seat through a disc spring guide sleeve reset spring, the working pressure of the system can be adjusted through adjusting the main valve adjusting handle, the safety valve seat is assembled in the valve body and is pressed by the safety valve core guide sleeve, the safety valve bonnet fixes the safety valve core guide sleeve on the safety valve seat through threaded connection, the safety valve core is matched, the spring seat is installed on the right side of the spring and fixed through a safety valve adjusting handle in threaded connection with a safety valve cover, and the safety pressure of the system can be adjusted through adjusting the safety valve adjusting handle. The reliability and the safety of the work of the ultrahigh pressure overflow valve are obviously improved by arranging a leakage hole on the valve body, arranging an oil injection hole on the valve cover of the main valve, installing a disc spring guide sleeve and installing a main valve reset spring.
Drawings
Fig. 1 is a schematic structural view of the present invention, fig. 2 is a schematic structural view of a valve body 1, fig. 3 is a schematic structural view of a main valve bonnet 8, fig. 4 is a schematic structural view of a disc spring guide sleeve 13, and fig. 5 is a schematic structural view of a safety valve bonnet 18; reference numerals and corresponding names: 1-valve body, 1 a-low pressure outlet, 1 b-first leakage hole, 1 c-high pressure inlet, 1 d-second leakage hole, 1 e-safety overflow outlet, 1 f-third leakage hole, 2-main valve seat, 3-main valve spool guide sleeve, 4-main valve spool, 5-main valve return spring, 6-lower disc spring seat, 7-disc spring assembly, 8-main valve bonnet, 8 a-oil hole, 9-disc spring guide sleeve return spring, 10-main valve adjusting handle, 11-main valve adjusting handle limit nut, 12-upper disc spring seat, 13-disc spring guide sleeve, 13 a-vent groove, 14-safety valve seat, 15-safety valve spool guide sleeve, 16-safety valve spool, -17-safety valve adjusting handle, 18-safety valve cover, 18 a-through hole, 19-spring seat and 20-spring.
Detailed Description
As shown in fig. 1 to 5, the invention relates to an ultrahigh pressure relief valve, which comprises a main valve, a safety valve and a valve body 1, wherein the main valve comprises a main valve seat 2, a main valve core guide sleeve 3, a main valve core 4, a main valve return spring 5, a lower disc spring seat 6, a disc spring assembly 7, a main valve bonnet 8, a disc spring guide sleeve return spring 9, a main valve adjusting handle 10, a main valve adjusting handle limit nut 11, an upper disc spring seat 12 and a disc spring guide sleeve 13, and the safety valve comprises a safety valve seat 14, a safety valve core guide sleeve 15, a safety valve core 16, a safety valve adjusting handle 17, a safety valve bonnet 18, a spring seat 19, a spring 20 and a sealing part; the safety valve core 16 is arranged in the safety valve core guide sleeve 15, the safety valve core 16 is matched with the safety valve seat 14, high-pressure sealing is realized through a hard sealing structure, and the high-pressure inlet 1c and the safety overflow outlet 1e are separated; a main valve reset spring 5 is arranged between the main valve core 4 and the main valve core guide sleeve 3; the main valve core 4 is arranged in the main valve core guide sleeve 3, the main valve core 4 is matched with the main valve seat 2, high-pressure sealing is realized through hard sealing, and a high-pressure inlet 1c and a low-pressure outlet 1a are separated; the main valve seat 2 is assembled in the valve body 1, the main valve spool guide sleeve 3 tightly presses the main valve seat 2, the main valve bonnet 8 is connected with the valve body 1 through threads and tightly presses the main valve spool guide sleeve 3, and an oil injection hole 8a is formed in the main valve bonnet 8; the relief valve cover 18 is provided with a through-hole 18 a.
As shown in fig. 1 and 2, the high-pressure inlet 1c is sealed by a conical surface, the matching conical surface is tightly pressed and sealed by threads, and a first leakage hole 1b is formed at the internal thread tool withdrawal groove of the high-pressure inlet 1 c; the valve body 1 is provided with a second leakage hole 1d and a third leakage hole 1 f.
As shown in fig. 1, a lower disc spring seat 6 is installed at the upper end of the main valve core 4; the contact position of the main valve core 4 and the lower disc spring seat 6 is ball point contact.
As shown in fig. 1 and 4, the main valve adopts a disc spring assembly 7 as a main valve pressure regulating spring; a disc spring guide sleeve 13 is arranged on the outer side of the disc spring component 7; the upper part of the disc spring guide sleeve 13 is provided with a disc spring guide sleeve reset spring 9; the disc spring guide sleeve 13 is provided with a through flow groove 13 a; the dish spring uide bushing 13 is located dish spring seat 6 top down, and dish spring uide bushing 13 outer wall cooperates with main valve gap 8 internal face, and dish spring subassembly 7 has been placed to dish spring uide bushing 13 inside, and dish spring seat 12 is installed on dish spring subassembly 7 upper end.
As shown in fig. 1, the main valve adjusting handle 10 is connected with the main valve bonnet 8 through a thread, the lower end of the main valve adjusting handle 10 is in contact with the upper disc spring seat 12, and the main valve adjusting handle limit nut 11 is installed on the main valve adjusting handle 10; the main valve adjusting handle 10 is in ball-end circumferential contact with the upper disc spring seat 12.
As shown in fig. 1, the spring 20 is installed between the safety valve spool 16 and the spring seat 19, the spring seat 19 is installed in the safety valve cover 18, and the minimum value of the safety pressure regulation range is limited by the inner step of the safety valve cover 18.
The highest working pressure of the ultrahigh pressure overflow valve reaches 200 MPa.
As shown in fig. 1, a safety valve seat 14 is assembled in a valve body 1, a safety valve core guide sleeve 15 is tightly pressed by the safety valve seat 14, a safety valve core guide sleeve 15 is tightly pressed by a safety valve cover 18, and the safety valve cover 18 is in threaded connection with the valve body 1.
As shown in fig. 1, the safety valve adjusting handle 17 is connected with the safety valve cover 18 by screw threads.
As shown in fig. 1 and 2, for a system with a higher working pressure, a high-pressure inlet 1c of the ultrahigh-pressure overflow valve is sealed by a conical surface, a matching surface is tightly sealed by a screw thread, and a first leakage hole 1b is formed in a tool withdrawal groove in the internal thread of the high-pressure inlet 1c, so that leakage caused by the uncompacted sealing conical surface is discharged from the first leakage hole 1b, and the safety is obviously improved.
As shown in fig. 1 and 2, because the working pressure is high, the second leakage hole 1d is formed in the valve body 1 of the ultrahigh-pressure relief valve, so that leakage caused by sealing failure between the main valve spool guide sleeve 3 and the valve body 1 is discharged from the second leakage hole 1d, and the safety is remarkably improved.
As shown in fig. 1, 2 and 3, because the working pressure is high, the main valve bonnet 8 of the ultrahigh-pressure relief valve of the invention is provided with the oil hole 8a, which not only can discharge the leakage caused by the failure of the seal between the main valve spool guide sleeve 3 and the main valve spool 4 from the oil hole 8a, but also can inject oil into the disc spring assembly 7 and the disc spring guide sleeve 13 through the oil hole 8a, thereby playing a role in lubrication, reducing the friction between the disc spring assembly 7 and the disc spring guide sleeve 13, and between the disc spring guide sleeve 13 and the main valve bonnet 8, preventing the clamping stagnation and remarkably improving the safety.
As shown in fig. 1 and 5, because the working pressure is high, the valve cover 18 of the safety valve of the ultra-high pressure relief valve is provided with the through hole 18a, so that leakage caused by sealing failure between the valve core guide sleeve 15 and the valve core 16 of the safety valve is led out from the through hole 18a, and the safety is obviously improved.
As shown in fig. 1, 2 and 5, because the working pressure is high, the valve body 1 of the ultrahigh-pressure relief valve of the invention is provided with the third leakage hole 1f, which not only enables leakage caused by sealing failure between the valve core guide sleeve 15 of the relief valve and the valve body 1 to flow out from the third leakage hole 1f, but also enables leakage led out from the through hole 18a to flow out, thereby remarkably improving the safety.
As shown in figure 1, because the working pressure is high, the ultrahigh pressure overflow valve is provided with a main valve and a safety valve, the pretightening force of the disc spring assembly 7 is adjusted by a main valve adjusting handle 10, the system pressure is further adjusted, the pretightening force of a spring 20 is adjusted by a safety valve adjusting handle 17, the system safety pressure is further adjusted, and the safety is remarkably improved.
As shown in fig. 1, because the working pressure is high and the stiffness of the disc spring assembly 7 is high, the main valve return spring 5 is installed between the main valve spool 4 and the main valve spool guide sleeve 3 of the ultra-high pressure relief valve, which can offset the stiffness of the disc spring assembly 7 to a certain extent, thereby improving the pressure regulation resolution, and can overcome the friction force of the sealing part between the main valve spool 4 and the main valve spool guide sleeve 3 on the main valve spool 4 during pressure relief, so that the main valve spool 4 moves upwards, thereby remarkably improving the safety.
As shown in figure 1, because the working pressure is high, the disc spring assembly 7 is adopted in the ultrahigh-pressure overflow valve for pressure regulation, and the disc spring assembly 7 can generate large deformation during pressure regulation, so that a disc spring guide sleeve 13 is installed on the outer side of the disc spring assembly 7, and the disc spring guide sleeve 13 moves along with the movement of the lower disc spring seat 6, so that the friction between the disc spring assembly 7 and the disc spring guide sleeve 13 is reduced, the clamping stagnation is prevented, and the safety is obviously improved.
As shown in fig. 1, 3 and 4, a flow through groove 13a is formed in the outer side of the disc spring guide sleeve 13, so that the lubricating oil entering from the oil injection hole 8a can flow downwards, the friction force between the disc spring guide sleeve 13 and the main valve bonnet 8 is reduced, the clamping stagnation is prevented, and the safety is remarkably improved.
As shown in fig. 1, the contact position of the main valve spool 4 and the lower disc spring seat 6 is ball point contact, and the contact position of the main valve adjusting handle 10 and the upper disc spring seat 12 is ball circumference contact, so that the influence of adverse conditions such as inclination of the main valve spool 4 caused by machining errors on the working performance is reduced, and the working performance is remarkably improved.
As shown in fig. 1, the spring mass system composed of the disc spring assembly 7, the main valve return spring 5 and the disc spring guide sleeve return spring 9 improves the response of the main valve spool 4 and improves the working performance.
The working process of the invention is as follows: as shown in fig. 1 and 2, a high-pressure medium flows in from a high-pressure inlet 1c, the high-pressure medium acts on a main valve spool 4 to generate an upward acting force, the main valve spool 4 is further subjected to a pretightening force of a disc spring assembly 7, an acting force of a main valve return spring 5, a friction force of a sealing part and a hydraulic force, when the upward acting force applied to the main valve spool 4 is larger than the downward acting force, the main valve spool 4 is opened, and an adjusting handle 10 of the main valve can change the pretightening force of the disc spring assembly 7, so that the opening pressure of the main valve spool 4 is changed, and the pressure of a working system is adjusted by using the ultrahigh-pressure overflow.
The high-pressure medium flows in from the high-pressure inlet 1c, the high-pressure medium acts on the safety valve spool 16 to generate a rightward acting force, the safety valve spool 16 is further subjected to the acting force of the spring 20, the friction force and the hydraulic force of the sealing part, when the rightward acting force applied to the safety valve spool 16 is larger than the leftward acting force, the safety valve spool 16 is opened, the pretightening force of the spring 20 can be changed by adjusting the safety valve adjusting handle 17, the opening pressure of the safety valve spool 16 is changed, and the effect of adjusting the safety pressure of the system is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and variations may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents, and it is intended that all such modifications, equivalents and improvements as fall within the true spirit and scope of the invention be embraced therein.
Claims (8)
1. The ultrahigh-pressure overflow valve comprises a main valve, a safety valve and a valve body (1), and is characterized in that the main valve comprises a main valve seat (2), a main valve core guide sleeve (3), a main valve core (4), a main valve reset spring (5), a lower disc spring seat (6), a disc spring assembly (7), a main valve bonnet (8), a disc spring guide sleeve reset spring (9), a main valve adjusting handle (10), a main valve adjusting handle limit nut (11), an upper disc spring seat (12) and a disc spring guide sleeve (13), and the safety valve comprises a safety valve seat (14), a safety valve core guide sleeve (15), a safety valve core (16), a safety valve adjusting handle (17), a safety valve bonnet (18), a spring seat (19), a spring (20) and a sealing part; the safety valve core (16) is arranged in the safety valve core guide sleeve (15), the safety valve core (16) is matched with the safety valve seat (14), high-pressure sealing is realized through a hard sealing structure, and the high-pressure inlet (1 c) and the safety overflow outlet (1 e) are separated; a main valve return spring (5) is arranged between the main valve core (4) and the main valve core guide sleeve (3); the main valve core (4) is arranged in the main valve core guide sleeve (3), the main valve core (4) is matched with the main valve seat (2), high-pressure sealing is realized through hard sealing, and a high-pressure inlet (1 c) and a low-pressure outlet (1 a) are separated; the main valve seat (2) is assembled in the valve body (1), the main valve spool guide sleeve (3) tightly presses the main valve seat (2), the main valve bonnet (8) is connected with the valve body (1) through threads and tightly presses the main valve spool guide sleeve (3), and an oil filling hole (8 a) is formed in the main valve bonnet (8); the safety valve cover (18) is provided with a through hole (18 a).
2. The ultra-high pressure relief valve according to claim 1, characterized in that: the high-pressure inlet (1 c) is sealed by adopting a conical surface, the matched conical surface is compressed and sealed by threads, and a first leakage hole (1 b) is formed in the internal thread tool withdrawal groove of the high-pressure inlet (1 c); a second leakage hole (1 d) and a third leakage hole (1 f) are formed in the valve body (1).
3. The ultra-high pressure relief valve according to claim 1, characterized in that: the upper end of the main valve core (4) is provided with a lower disc spring seat (6); the contact position of the main valve core (4) and the lower disc spring seat (6) is ball point contact.
4. The ultra-high pressure relief valve according to claim 1, characterized in that: the main valve adopts a disc spring component (7) as a main valve pressure regulating spring; a disc spring guide sleeve (13) is arranged on the outer side of the disc spring component (7); the upper part of the disc spring guide sleeve (13) is provided with a disc spring guide sleeve reset spring (9); a through flow groove (13 a) is formed in the disc spring guide sleeve (13); dish spring uide bushing (13) are located dish spring seat (6) top down, and dish spring uide bushing (13) outer wall cooperates with main valve gap (8) internal face, and dish spring subassembly (7) have been placed to dish spring uide bushing (13) inside, and dish spring seat (12) are installed to dish spring subassembly (7) upper end.
5. The ultra-high pressure relief valve according to claim 1, characterized in that: the main valve adjusting handle (10) is connected with the main valve bonnet (8) through threads, the lower end of the main valve adjusting handle (10) is in contact with the upper disc spring seat (12), and the main valve adjusting handle limiting nut (11) is installed on the main valve adjusting handle (10); the main valve adjusting handle (10) is in ball head circumferential contact with the upper disc spring seat (12).
6. The ultra-high pressure relief valve according to claim 1, characterized in that: the spring (20) is arranged between the safety valve spool (16) and the spring seat (19), the spring seat (19) is arranged in the safety valve cover (18), and the minimum value of the safety pressure adjusting range is limited by the internal step of the safety valve cover (18).
7. The ultra-high pressure relief valve according to claim 1, characterized in that: the highest working pressure of the ultrahigh pressure overflow valve reaches 200 MPa.
8. The ultra-high pressure relief valve according to claim 1, characterized in that: the safety valve is characterized in that a safety valve seat (14) is assembled in the valve body (1), a safety valve core guide sleeve (15) is tightly pressed by the safety valve seat (14), the safety valve core guide sleeve (15) is tightly pressed by a safety valve cover (18), and the safety valve cover (18) is in threaded connection with the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010016174.2A CN110985729A (en) | 2020-01-08 | 2020-01-08 | Ultrahigh pressure overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010016174.2A CN110985729A (en) | 2020-01-08 | 2020-01-08 | Ultrahigh pressure overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110985729A true CN110985729A (en) | 2020-04-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010016174.2A Pending CN110985729A (en) | 2020-01-08 | 2020-01-08 | Ultrahigh pressure overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110985729A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550586A (en) * | 2020-05-12 | 2020-08-18 | 成都海申科技有限公司 | Spring blasting relief valve can reset |
| CN112524113A (en) * | 2020-11-30 | 2021-03-19 | 重庆红江机械有限责任公司 | Hydraulic pressure stabilizing valve |
| CN112879634A (en) * | 2021-02-09 | 2021-06-01 | 国家石油天然气管网集团有限公司华南分公司 | Blade motor direct-drive and manual double-control electromagnetic pilot type Y-shaped water hammer relief valve |
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| JP2007057086A (en) * | 2005-07-27 | 2007-03-08 | Bosch Rexroth Corp | Pressure control valve |
| CN102042432A (en) * | 2010-12-10 | 2011-05-04 | 北京工业大学 | Direct-acting water pressure overflow valve with damping piston |
| CN201908828U (en) * | 2010-12-17 | 2011-07-27 | 苏州黑猫(集团)有限公司 | Unloading valve |
| CN103122884A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN202851494U (en) * | 2012-09-27 | 2013-04-03 | 西南交通大学 | Pilot-operated type overflow valve |
| CN204344557U (en) * | 2014-10-23 | 2015-05-20 | 西华大学 | A kind of ultrahigh pressure pilot operated compound relief valve |
| CN204459330U (en) * | 2015-03-12 | 2015-07-08 | 中国石油大学(华东) | A kind of leading type overflow pressure-stabilizing valve |
| CN105114382A (en) * | 2015-07-28 | 2015-12-02 | 华中科技大学 | Pilot operated type overflow valve |
| CN205478626U (en) * | 2016-03-25 | 2016-08-17 | 安徽理工大学 | Novel combined valve |
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