CN213177025U - High-temperature high-pressure temperature and pressure reducing regulating valve - Google Patents
High-temperature high-pressure temperature and pressure reducing regulating valve Download PDFInfo
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- CN213177025U CN213177025U CN202021720491.4U CN202021720491U CN213177025U CN 213177025 U CN213177025 U CN 213177025U CN 202021720491 U CN202021720491 U CN 202021720491U CN 213177025 U CN213177025 U CN 213177025U
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Abstract
The utility model belongs to the technical field of regulating equipment, specifically provide a high temperature high pressure temperature and pressure reduction governing valve, including valve body, valve barrel, upper valve gap, valve rod, case, disk seat, nozzle, one-level orifice plate and second grade orifice plate, upper valve gap is connected to the top of valve body, valve barrel, valve seat, one-level orifice plate and second grade orifice plate are connected in proper order from top to bottom to the middle part inboard of valve body, the case is connected in the upper portion inboard of valve seat, the inboard nozzle that connects in bottom of valve seat, the valve rod passes upper valve gap from top to bottom and the bottom of valve rod is connected with the case; the left part of the valve body is provided with the air inlet, the valve sleeve is provided with the primary throttling hole, the valve core is provided with the throttling groove and the valve core throttling hole, the problems that the front and back pressure difference of the pressure reducing valve is large, leakage, noise and cavitation are easy to generate, and automatic control can also fail are solved.
Description
Technical Field
The utility model belongs to the technical field of adjusting device, concretely relates to high temperature high pressure temperature and pressure reduction governing valve.
Background
The temp. and pressure reducing regulating valve is a special high-pressure difference regulating valve with novel structure, and has the functions of starting regulating valve, pressure reducing by-pass valve and safety valve. The valve can realize quick automatic tracking overpressure protection, and a boiler safety valve is omitted.
The valve can be quickly started in a short time, and a control system of the electric actuating mechanism adapts to the parameter operation of different working conditions by adjusting steam pressure. An additional desuperheating water conditioning system may be used for the high pressure bypass valve design. Can greatly reduce the temperature and the pressure, and reduce huge temperature and pressure reducing systems and equipment of the power plant. The valve is one of the important regulating valves of the bypass system of the high-capacity unit reheating unit. In a temperature and pressure reducing system, the pressure difference between the front and the back of a key equipment pressure reducing valve is large, leakage, noise and cavitation are easy to generate, and automatic control also fails.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high temperature high pressure temperature and pressure reduction governing valve purpose is overcome among the prior art in the pressure reduction system that reduces the temperature, and pressure differential is big around the key equipment relief pressure valve, easily produces leakage, noise and cavitation, and automatic control also can the problem that became invalid.
Therefore, the utility model provides a high temperature high pressure temperature and pressure reduction governing valve, which comprises a valve body, the valve barrel, go up the valve gap, the valve rod, the case, the disk seat, the nozzle, first order orifice plate and second grade orifice plate, the upper connection of valve body goes up the valve gap, the cavity has been seted up from top to bottom in the middle part of valve body, the inside of cavity connects gradually the valve barrel from top to bottom, the disk seat, first order orifice plate and second grade orifice plate, the case is connected in the upper portion inboard of disk seat and the case is located the valve barrel inside, the bottom inboard of disk seat connects the nozzle and the inboard intercommunication cavity in disk seat bottom, the valve rod passes the upper valve gap from; the left part of the valve body is provided with an air inlet from left to right, the valve sleeve is provided with a primary throttling hole, the primary throttling hole is communicated with the air inlet, and the valve core is sequentially provided with a throttling groove and a valve core throttling hole from top to bottom.
Furthermore, the valve sleeve is a suspension type valve sleeve.
Furthermore, the valve core is provided with a valve core cavity from bottom to top, the upper part of the valve core is provided with a balance hole, and the balance hole, the inner side of the upper part of the valve sleeve and the valve core cavity are communicated.
Further, the vertical setting of balancing hole and quantity are a plurality of, and a plurality of balancing holes use the valve rod to distribute as centre of a circle equidistant circumference.
Furthermore, the valve seat further comprises a self-sealing ring, and the self-sealing ring is sleeved on the outer side of the upper portion of the valve seat.
Further, the valve seat also comprises a fastener, the fastener is connected between the valve seat and the valve body, and the lower surface of the fastener is connected with a self-sealing ring.
Furthermore, a plurality of annular throttling seal grooves are formed in the outer side of the lower portion of the valve seat.
Further, a nozzle orifice is arranged on the nozzle.
Furthermore, the first-stage orifice plate and the second-stage orifice plate are both provided with a plurality of small orifices.
The utility model has the advantages that:
1) the utility model provides a high temperature high pressure temperature and pressure reduction governing valve, steam passes through valve body and disk seat earlier, pressure reduction is partly, the nozzle upwards spouts high-speed cooling water, the cooling water is by the in-process of high-pressure steam atomizing and mixing in the disk seat bottom, carry out abundant heat exchange, thereby make high temperature steam accomplish the cooling process in the disk seat bottom, then flow through the disk seat bottom, rethread one-level orifice plate and second grade orifice plate, reduce steam pressure to rated requirement, because the decompression of steam is all accomplished in same valve body, so the system does not set up special desuperheater in addition, the noise is low;
2) the high-temperature high-pressure temperature and pressure reducing and pressure regulating valve provided by the utility model adopts the self-sealing structure of the self-sealing ring and the fastener, the sealing ring generates downward force through the pressure sealing ring in the fastener, and plays a role of auxiliary sealing for the valve body 1, and the sealing is reliable and can prevent steam from leaking inwards;
3) the utility model provides a high temperature high pressure temperature and pressure reduction regulating valve, the valve seat sealing surface is a conical surface, there is little angular difference between two conical surfaces of valve seat, case, and design the multiple ring-shaped throttle seal groove on the sealing surface, make the face-to-face seal approximate to line-to-line seal, increase the sealed specific pressure, make the metal take place elastic deformation more easily, fill up the microcosmic clearance of the sealed contact surface, really accomplish zero leakage;
4) the high-temperature high-pressure temperature and pressure reducing regulating valve provided by the utility model adopts the suspended valve sleeve to prevent the valve from being blocked in the operation process, thereby ensuring the reliable operation of the valve;
5) the high-temperature high-pressure temperature and pressure reducing regulating valve provided by the utility model has the advantages that the throttling surface is separated from the sealing surface, the sealing surface is effectively protected, and the sealing performance is good;
6) the high-temperature high-pressure temperature and pressure reducing regulating valve provided by the utility model has the advantages that high-temperature steam enters from two sides, the concentricity of the valve rod, the valve core and the valve seat is well ensured, the sealing performance of the valve core and the valve seat is improved, and the service life of the valve is prolonged;
7) the utility model provides a high temperature high pressure temperature and pressure reduction governing valve, simple structure, novel in design is reasonable, easily installs, and the operational reliability is high, reduces vibration and noise, has prolonged life, excellent in use effect, convenient to popularize and use.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a front view of a high-temperature high-pressure temperature and pressure reducing regulating valve;
FIG. 2 is a front view of the cartridge structure;
FIG. 3 is a top view of the valve cartridge structure;
FIG. 4 is a front view of the nozzle structure;
FIG. 5 is a top view of the nozzle structure;
FIG. 6 is a front view of the self-sealing structure;
FIG. 7 is a top view of a primary orifice plate structure;
FIG. 8 is a front view of a primary orifice plate structure;
FIG. 9 is a top view of a two-stage orifice plate structure;
FIG. 10 is a front view of a two-stage orifice plate structure.
Description of reference numerals: 1. a valve body; 2. a valve housing; 3. an upper valve cover; 4. a valve stem; 5. a bonnet fastener; 6. a valve core; 7. a primary orifice; 8. a fastener; 9. a self-sealing ring; 10. a valve seat; 11. an annular throttling seal groove; 12. a nozzle orifice; 13. a nozzle; 14. a first-stage orifice plate; 15. a secondary orifice plate; 16. a small orifice; 17. a valve core cavity; 18. an inner flange; 19. an outer flange; 20. a nut fastener; 21. a bolt fastener; 22. a cavity; 23. a spool orifice; 24. a valve core sealing ring; 25. a balance hole; 26. a throttling groove; 1-1 and an air inlet.
Detailed Description
Example 1:
as shown in fig. 1-2, a high-temperature high-pressure temperature and pressure reducing regulating valve comprises a valve body 1, a valve sleeve 2, an upper valve cover 3, a valve rod 4, a valve core 6, a valve seat 10, a nozzle 13, a primary orifice plate 14 and a secondary orifice plate 15, wherein the upper surface of the valve body 1 is connected with the upper valve cover 3, a cavity 22 is formed in the middle of the valve body 1 from top to bottom, the interior of the cavity 22 is sequentially connected with the valve sleeve 2, the valve seat 10, the primary orifice plate 14 and the secondary orifice plate 15 from top to bottom, the valve core 6 is connected to the inner side of the upper part of the valve seat 10, the valve core 6 is positioned in the valve sleeve 2, the inner side of the bottom of the valve seat 10 is connected with the nozzle 13; the left part of the valve body 1 is provided with an air inlet 1-1 from left to right, the valve sleeve 2 is provided with a primary throttle hole 7, the primary throttle hole 7 is communicated with the air inlet 1-1, and the valve core 6 is sequentially provided with a throttle groove 26 and a valve core throttle hole 23 from top to bottom.
The utility model provides a high temperature high pressure temperature and pressure reduction governing valve, steam with pressure P1 temperature T1 nature gets into in the valve body 1 from air inlet 1-1 of valve body 1, through the one-level orifice 7 of valve barrel 2, after the throttle groove 26 throttle of back through case 6, carry out the secondary throttle through case orifice 23, steam passes through valve barrel 2 and case 6 earlier, pressure reduces partly, nozzle 13 upwards spouts the high speed has pressure P3 temperature T3 cooling water, the cooling water is in-process by high-pressure steam atomizing and mixing in the bottom center of valve seat 10, carry out abundant heat exchange, thereby make to have pressure P1 temperature T1 high-temperature steam and accomplish the cooling process in valve seat 10 bottom center, loop through one-level orifice plate 14 and second grade orifice plate 15 again at last, reduce to the export pressure P1 temperature T1 steam pressure and have pressure P2 temperature T2 rated requirement, because the decompression of steam subtracts the temperature and all accomplishes in same valve body, so the system does not establish special desuperheater in addition, simple structure, and novel in design is reasonable, easily installs, and the operational reliability is high, reduces vibration and noise, has prolonged life, excellent in use effect, convenient to popularize and use.
Example 2:
on the basis of embodiment 1, further, the valve housing 2 is a suspension type valve housing. The valve is prevented from being blocked in the operation process, and the operation reliability of the valve is ensured.
As shown in fig. 3, the valve core 6 further has a valve core cavity 17 formed therein from bottom to top, the upper portion of the valve core 6 has a balance hole 25, and the balance hole 25 and the inner side of the upper portion of the valve housing 2 are communicated with the valve core cavity 17. The balance hole 25 enables the pressure of the valve core 6 to be balanced up and down, and the valve is opened quickly and runs smoothly.
Further, the valve core 6 is provided with a valve core sealing ring 24, and the valve core sealing ring 24 is made of composite materials, so that the valve is sealed reliably.
Furthermore, the throttling groove 26 is an annular throttling groove which can perform annular throttling and has a good throttling effect.
Further, the balance holes 25 are vertically arranged and are distributed in a plurality of numbers, and the balance holes 25 are distributed at equal intervals in the circumferential direction by taking the valve rod 4 as a circle center. The pressure balance is realized quickly, so that the valve is opened quickly and runs smoothly.
As shown in fig. 6, further, the valve seat 10 further includes a self-sealing ring 9, and the self-sealing ring 9 is sleeved outside the upper portion of the valve seat 10. The sealing ring 9 can play a good sealing role for the valve body.
Further, the valve seat 10 further comprises a fastening member 8, the fastening member 8 is connected between the valve seat 10 and the valve body 1, and a self-sealing ring 9 is connected below the fastening member 8. The fastener is the disk seat clamping ring, and self-sealing ring 9 presses the self-sealing ring through fastener 8 and produces decurrent power, plays supplementary sealed effect to valve body 1, improves the leakproofness.
Further, a plurality of annular throttling seal grooves 11 are formed in the outer side of the lower portion of the valve seat 10. The sealing surface of the valve seat 10 is a conical surface, a small angle difference exists between the two conical surfaces of the valve seat 10 and the valve core 6, and a plurality of annular throttling sealing grooves 11 are designed on the sealing surface, so that the surface-surface sealing is approximate to line-line sealing, the sealing specific pressure is increased, the metal is easy to elastically deform, the microscopic gap of the sealing contact surface is filled, and zero leakage is really realized.
As shown in fig. 4 to 5, the nozzle 13 is further provided with a nozzle orifice 12. The cooling water is fully heat exchanged, and the high-temperature steam with pressure and temperature is cooled.
As shown in fig. 7-10, further, the primary orifice plate 14 and the secondary orifice plate 15 are both provided with a plurality of small orifice holes 16. The plurality of throttling apertures 16 reduce steam temperature and pressure to meet outlet rating requirements.
Further, the valve rod 4 adopts a thin valve rod structure, so that the friction force of the filler is reduced, and the adjusting precision is improved.
Furthermore, the components in the high-temperature and high-pressure temperature and pressure reducing regulating valve have high wear resistance and long service life, and the hardness of the components reaches HRC70 or so after surface hardening treatment.
Furthermore, the left part of the valve body 1 is provided with an air inlet 1-1 from left to right, high-temperature steam enters from two sides, the concentricity of the valve rod, the valve core and the valve seat is well ensured, the sealing performance of the valve core and the valve seat is improved, and the service life of the valve is prolonged.
Further, the valve body 1 and the valve sleeve 2 are connected through a valve cover fastener, the left end of the nozzle 13 is connected to the inner side of the bottom of the valve seat 10, the right end of the nozzle 13 is connected to the valve body 1 through an inner flange 18, an outer flange 19, a nut fastener 20 and a bolt fastener 21, the connection is detachable, the structure is simple, and the installation and the detachment are convenient.
In the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", etc., it is based on the orientation or positional relationship shown in the drawings, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the terms describing the positional relationship in the drawings are for illustrative purposes only and are not to be construed as limiting the present invention.
The above examples are merely illustrative of the present invention and do not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (9)
1. The utility model provides a high temperature high pressure temperature and pressure reduction governing valve which characterized in that: the valve comprises a valve body (1), a valve sleeve (2), an upper valve cover (3), a valve rod (4), a valve core (6), a valve seat (10), a nozzle (13), a primary throttle orifice plate (14) and a secondary throttle orifice plate (15), wherein the upper surface of the valve body (1) is connected with the upper valve cover (3), the middle part of the valve body (1) is provided with a cavity (22) from top to bottom, the inside of the cavity (22) is sequentially connected with the valve sleeve (2), the valve seat (10), the primary throttle orifice plate (14) and the secondary throttle orifice plate (15) from top to bottom, the valve core (6) is connected to the inner side of the upper part of the valve seat (10), the valve core (6) is positioned in the valve sleeve (2), the inner side of the bottom of the valve seat (10) is connected with the nozzle (13), the inner side of the bottom of the valve seat (10) is communicated with; an air inlet (1-1) is formed in the left portion of the valve body (1) from left to right, a primary throttle hole (7) is formed in the valve sleeve (2) and communicated with the air inlet (1-1), and a throttle groove (26) and a valve core throttle hole (23) are sequentially formed in the valve core (6) from top to bottom.
2. A high-temperature high-pressure temperature-reducing pressure-reducing regulator valve as defined in claim 1, wherein: the valve sleeve (2) is a suspension type valve sleeve.
3. A high-temperature high-pressure temperature-reducing pressure-reducing regulator valve as defined in claim 1, wherein: the valve core (6) is provided with a valve core cavity (17) from bottom to top, the upper part of the valve core (6) is provided with a balance hole (25), the balance hole (25) and the inner side of the upper part of the valve sleeve (2) are communicated with the valve core cavity (17).
4. A high-temperature high-pressure temperature-reducing pressure-reducing regulator valve according to claim 3, wherein: balance hole (25) vertical setting and quantity are a plurality of, and a plurality of balance hole (25) use valve rod (4) to distribute as centre of a circle equidistant circumference.
5. A high-temperature high-pressure temperature-reducing pressure-reducing regulator valve as defined in claim 1, wherein: the valve seat (10) further comprises a self-sealing ring (9), and the self-sealing ring (9) is sleeved on the outer side of the upper portion of the valve seat (10).
6. The high-temperature, high-pressure, temperature-reducing, pressure-reducing regulator valve of claim 5, wherein: the valve seat (10) further comprises a fastener (8), the fastener (8) is connected between the valve seat (10) and the valve body (1), and a self-sealing ring (9) is connected below the fastener (8).
7. A high-temperature high-pressure temperature-reducing pressure-reducing regulator valve as defined in claim 1, wherein: and a plurality of annular throttling sealing grooves (11) are formed in the outer side of the lower part of the valve seat (10).
8. A high-temperature high-pressure temperature-reducing pressure-reducing regulator valve as defined in claim 1, wherein: the nozzle (13) is provided with a nozzle orifice (12).
9. A high-temperature high-pressure temperature-reducing pressure-reducing regulator valve as defined in claim 1, wherein: the primary throttle orifice plate (14) and the secondary throttle orifice plate (15) are both provided with a plurality of throttle orifices (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021720491.4U CN213177025U (en) | 2020-08-18 | 2020-08-18 | High-temperature high-pressure temperature and pressure reducing regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021720491.4U CN213177025U (en) | 2020-08-18 | 2020-08-18 | High-temperature high-pressure temperature and pressure reducing regulating valve |
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| Publication Number | Publication Date |
|---|---|
| CN213177025U true CN213177025U (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021720491.4U Active CN213177025U (en) | 2020-08-18 | 2020-08-18 | High-temperature high-pressure temperature and pressure reducing regulating valve |
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| CN (1) | CN213177025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060528A (en) * | 2022-01-17 | 2022-02-18 | 艾肯（江苏）工业技术有限公司 | Be used for steam system atomizing integral type pressure relief device that reduces temperature |
-
2020
- 2020-08-18 CN CN202021720491.4U patent/CN213177025U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060528A (en) * | 2022-01-17 | 2022-02-18 | 艾肯（江苏）工业技术有限公司 | Be used for steam system atomizing integral type pressure relief device that reduces temperature |
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