CN202884084U - Temperature and pressure reducer adjusting valve - Google Patents
Temperature and pressure reducer adjusting valve Download PDFInfo
- Publication number
- CN202884084U CN202884084U CN 201220578871 CN201220578871U CN202884084U CN 202884084 U CN202884084 U CN 202884084U CN 201220578871 CN201220578871 CN 201220578871 CN 201220578871 U CN201220578871 U CN 201220578871U CN 202884084 U CN202884084 U CN 202884084U
- Authority
- CN
- China
- Prior art keywords
- valve
- seal ring
- temperature
- pressure reducer
- valve body
- 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.)
- Expired - Fee Related
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 11
- 229910000863 Ferronickel Inorganic materials 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 23
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
Disclosed is a temperature and pressure reducer adjusting valve. A valve sleeve is arranged on a valve seat of a horizontal section of a valve body. A vent hole is formed in the valve sleeve. A valve deck is arranged on a vertical section of the valve body. A valve core arranged above the valve sleeve and connected with a valve rod is arranged inside the valve body. Two seal grooves are formed in the surface of the outer periphery of the valve core. An upper seal ring is arranged inside the upper seal groove. A lower seal ring made of ferronickel is arranged inside the lower seal groove. Due to the fact that the ferronickel ring is arranged inside the lower seal groove in the surface of the outer periphery of the valve core, capable of resisting high temperature, corrosion, and stable in property under steam of 400 DEG C after trial use of two years, the temperature and pressure reducer adjusting valve is good in tightness, and capable of prolonging service life of the seal ring due to the lower seal ring, prolonging replacement cycle of the seal ring, lowering production cost and being used as a circulation valve of a high temperature steam pipe.
Description
Technical field
The utility model belongs to the technology of instrument and meter field, is specifically related to a kind of temperature-decreased pressure reducer modulating valve.
Background technique
Power station temperature-decreased pressure reducer modulating valve is power station defeated medium pressure steam pressure control valve outward, the pressure of control medium pressure steam, and modulating valve directly affects the safety and steady production of large-scale unit on the control of medium pressure steam, so play a very important role aborning.
The temperature-decreased pressure reducer modulating valve has the two seals ring at valve, seal ring in modulating valve except being used for sealed steam, the effect that keeps in addition the spool balance, because modulating valve is usually operated under the rugged environment of High Temperature High Pressure, modulating valve is up and down frequently at work, cause seal ring and valve pocket very easily to wear and tear and produce scratch or groove, affect the Security of valve arrangement, and the inside and outside pressure difference of valve also easily damages valve arrangement.Used teflon seal ring, graphite-seal ring, high temperature ferronickel seal ring etc. in the existing equipment, adopt teflon seal ring, because the non-refractory of teflon material own, deliquescing can't be played the sealing process of seal ring under 400 ℃ steam, graphite-seal ring can high temperature resistantly use, but because the crisp easy-rupturing of graphite can't use for a long time, high temperature ferronickel seal ring can satisfy high temperature and durable requirement, but cost is high, increase the device fabrication cost, because its defective separately.All be not suitable for using for a long time on the temperature-decreased pressure reducer modulating valve.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defective that existing seal ring exists, provide a kind of high temperature resistant, toughness is high, product cost is low, effectively protect the temperature-decreased pressure reducer modulating valve of modulating valve.
Solving the problems of the technologies described above the technological scheme that adopts is: the valve seat of horizontal segment is provided with valve pocket in valve body, be processed with vent on the valve pocket, vertical section upper end at valve body is provided with valve gap, be provided with in the valve body and be positioned at the spool that connects with valve rod directly over the valve pocket, be processed with the two seals groove on the external peripheral surface of spool, above be provided with upper sealing ring in the road sealing groove, below be provided with lower seal in the road sealing groove.Lower sealing ring of the present utility model is the ferronickel seal ring.
In the road sealing groove lower sealing ring is installed below the external peripheral surface of the utility model employing spool, lower sealing ring is the ferronickel seal ring, and the ferronickel seal ring has high temperature resistant, decay resistance, in 400 ℃ steam ambient, its performance does not change, on probation through 2 years, have good sealability, the lower sealing ring of this structure, prolonged the working life of seal ring, prolong the replacement cycle of seal ring, reduced cost of production, can be used as the circulation valve on the high temperature steam pipeline.
Description of drawings
Fig. 1 is an embodiment's of the utility model structural representation.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but the utility model is not limited to these embodiments.
Embodiment 1
In Fig. 1, the temperature-decreased pressure reducer modulating valve of the present embodiment is made of valve rod 1, valve gap 2, spool 3, upper sealing ring 4, lower sealing ring 5, valve pocket 6, valve seat 7, valve body 8 connections.
The valve body 8 of the present embodiment is made of the vertical section of horizontal segment with mutual UNICOM, in valve body 8 vertical sections upper ends with the screw threads for fastening coupling valve gap 2 that has been fixedly connected, on horizontal segment in the valve body 8 and the vertical section crossover location valve seat 7 valve pocket 6 is installed, be processed with vent on the valve pocket 6, steam flows out through valve pocket 6, and the internal diameter of valve pocket 6 is identical with the internal diameter of valve body vertical section.Spool 3 is installed in the vertical section of valve body 8, spool 3 be positioned at valve pocket 6 directly over, the external diameter of spool 3 is less than the internal diameter of valve pocket 6, between spool 3 and the valve pocket 6 for movingly, spool 3 can move up and down in valve pocket 6, the central position of spool 3 is equipped with valve rod 1 by scyewed joint, and valve rod 1 links with solenoid valve, has solenoid valve to promote valve rod and moves.Be processed with the two seals groove on the external peripheral surface of spool 3, above upper sealing ring 4 is installed in the road sealing groove, upper sealing ring 4 is packing_seal rings, below lower sealing ring 5 is installed in the road sealing groove, lower sealing ring 5 is the ferronickel seal ring, the ferronickel seal ring has high temperature resistant, decay resistance, in 400 ℃ steam ambient, its performance does not change, and is on probation through 2 years, has good sealability, the lower sealing ring 5 of this structure, prolong the working life of seal ring, prolonged the replacement cycle of seal ring, reduced cost of production.During use, promote valve rod 1 so that spool 3 moves down enters in the valve pocket 6 by solenoid valve, high-temperature steam can not flow through from the horizontal segment of valve body 8; Poppet-valve bar 1 on the solenoid valve is so that spool 3 moves up leaves in the valve pocket 6, and high-temperature steam can flow through from the horizontal segment of valve body 8.
Claims (1)
1. temperature-decreased pressure reducer modulating valve, the valve seat (7) of horizontal segment is provided with valve pocket (6) in valve body (8), valve pocket is processed with vent on (6), vertical section upper end at valve body (8) is provided with valve gap (2), be provided with in the valve body (8) and be positioned at the spool (3) that connects with valve rod (1) directly over the valve pocket (6), be processed with the two seals groove on the external peripheral surface of spool (3), above be provided with upper sealing ring (4) in the road sealing groove, below be provided with lower sealing ring (5) in the road sealing groove, it is characterized in that: described lower sealing ring (5) is the ferronickel seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578871 CN202884084U (en) | 2012-11-05 | 2012-11-05 | Temperature and pressure reducer adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578871 CN202884084U (en) | 2012-11-05 | 2012-11-05 | Temperature and pressure reducer adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202884084U true CN202884084U (en) | 2013-04-17 |
Family
ID=48075514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220578871 Expired - Fee Related CN202884084U (en) | 2012-11-05 | 2012-11-05 | Temperature and pressure reducer adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202884084U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062611A (en) * | 2012-12-27 | 2013-04-24 | 潍坊天瑞重工凿岩机械有限公司 | Oil feeder capable of adjusting oil quantity automatically |
| CN103615557A (en) * | 2013-12-05 | 2014-03-05 | 四川锦宇化机有限公司 | Boiler feed water regulating valve |
| CN103644307A (en) * | 2013-12-07 | 2014-03-19 | 四川锦宇化机有限公司 | High-temperature and high-pressure temperature and pressure reducing valve |
| CN105003734A (en) * | 2015-06-24 | 2015-10-28 | 何小平 | Flow diversion pressure reducing valve |
-
2012
- 2012-11-05 CN CN 201220578871 patent/CN202884084U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062611A (en) * | 2012-12-27 | 2013-04-24 | 潍坊天瑞重工凿岩机械有限公司 | Oil feeder capable of adjusting oil quantity automatically |
| CN103062611B (en) * | 2012-12-27 | 2014-04-02 | 潍坊天瑞重工凿岩机械有限公司 | Oil feeder capable of adjusting oil quantity automatically |
| CN103615557A (en) * | 2013-12-05 | 2014-03-05 | 四川锦宇化机有限公司 | Boiler feed water regulating valve |
| CN103644307A (en) * | 2013-12-07 | 2014-03-19 | 四川锦宇化机有限公司 | High-temperature and high-pressure temperature and pressure reducing valve |
| CN105003734A (en) * | 2015-06-24 | 2015-10-28 | 何小平 | Flow diversion pressure reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20191105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |