CN101440888A - High-temperature high-pressure pressure-reducing valve - Google Patents
High-temperature high-pressure pressure-reducing valve Download PDFInfo
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- CN101440888A CN101440888A CNA200810164000XA CN200810164000A CN101440888A CN 101440888 A CN101440888 A CN 101440888A CN A200810164000X A CNA200810164000X A CN A200810164000XA CN 200810164000 A CN200810164000 A CN 200810164000A CN 101440888 A CN101440888 A CN 101440888A
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Abstract
The invention discloses a high temperature high pressure reducing valve, comprising a lever, an upper valve cover, a valve stem, a valve body, a valve seat and a lower valve cover. The top of the valve body is connected with the upper valve cover. The bottom of the valve body is equipped with a lower valve cover. The upper part of the inner cavity of the valve body is a high-pressure admission chamber communicated with the inlet. The lower part of the valve body inner cavity is a low pressure steam chamber communicated with the outlet. A valve seat is arranged on the circulation channel between the high-pressure admission chamber and the low pressure steam chamber. A flap matched with the valve seat is arranged inside. The cross section of the flap is a streamlined structure. When the valve stem moves up and down, the valve seat and flap form a streamlined steam flow path. One end of the flap is connected with one end of the valve stem and the other end of the valve stem is connected with the level. The invention adopts single seat plunger and porous throttling cover two stage pressure reducing structure, reduces the valve leakage rate, increases pressure reducing amplitude and simultaneously the porous throttling cover can reduce noises.
Description
Technical field
The present invention relates to the power station valve field, mainly is a kind of High Temperature High Pressure reduction valve.
Background technique
The High Temperature High Pressure reduction valve is the core valve of power station High Temperature High Pressure reducing-and-cooling plant, also is the main valve of high pressure turbine by, is the important corollary equipment of " thermoelectric cold " three coproduction.There is certain problem in traditional High Temperature High Pressure decompressor aspect safe and reliable and the adjusting function.A new generation's High Temperature High Pressure reduction valve is from structural design, reduces that aspects such as noise, reliability and saving cost all are significantly improved and perfect.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned prior art, provides a kind of structure to form rationally the High Temperature High Pressure reduction valve that energy consumption and cost are lower.
The present invention solves the technological scheme that its technical problem adopts: this High Temperature High Pressure reduction valve, mainly form by lever, bonnet, valve rod, valve body, valve seat and bottom flange, the top of valve body is connected with bonnet, the valve body bottom is equipped with bottom flange, the top of described body cavity is the high pressure admission chamber, the high pressure admission chamber is connected with import, and the bottom of body cavity is the low pressure steam chest, and the low pressure steam chest is connected with outlet; Circulation road between high pressure admission chamber and the low pressure steam chest is provided with valve seat, be provided with the flap that is mated in the valve seat, the cross section of flap is streamline structure, when valve rod moves up and down, form streamline steam flow passage between valve seat and flap, one end of flap is connected with valve rod one end, and the other end of valve rod is connected with lever.
Be provided with the throttling cover in the described valve body mesolow steam chest, the throttling cover is the porous flow linear structure, and import is connected with outlet with flap formation streamline steam flow passage, the inner chamber of throttling cover, the throttle orifice on the throttling cover by high pressure admission chamber, valve seat.
Described valve body is the double spherical structure, and the top pellet shapes is the high pressure admission chamber, and the big spheroid in bottom is the low pressure steam chest.
Described bottom flange is provided with hydrophobic.
Described valve seat and valve body adopt welding connection structure, and valve seat is provided with the welding deformation groove.
Described outlet passage area is greater than inducer flow area.
The effect that the present invention is useful is: the present invention adopts single seat plunger and porous throttling cover second depressurized structural type, has both reduced the valve leak amount, increases the decompression amplitude again, and porous throttling cover can also reduce noise simultaneously; Porous throttling cover adopts streamlined structure, avoids the alternating stress of material, improves safety reliability; Relief valve body adopts two spherical, and voltage endurance capability is strong, and the High Temperature High Pressure that reduces medium is simultaneously washed away and the material alternating stress that produces.Be provided with hydrophobicly at the valve lowest part, avoided the impact of water hammer of various operating modes, for preventing the influence of welding deformation to sealing surface of seat, be provided with the welding deformation groove on valve seat, it is bigger than inducer flow area that the outlet passage area design becomes, and guarantees not produce big noise.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an I part partial enlarged drawing of the present invention.
Description of reference numerals: lever 1, bonnet 2, valve rod 3, valve body 4, flap 5, valve seat 6, throttling cover 7, throttle orifice 7-1, bottom flange 8, hydrophobic 9, import 10, outlet 11, welding deformation groove 12, high pressure admission chamber 13, low pressure steam chest 14.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
Shown in Fig. 1-2, this High Temperature High Pressure reduction valve mainly is made up of lever 1, bonnet 2, valve rod 3, valve body 4, valve seat 6 and bottom flange 8, and the top of valve body 4 is connected with bonnet 2, and valve body 4 bottoms are equipped with bottom flange 8.It is hydrophobic 9 that bottom flange 8 is provided with, and avoided the impact of water hammer of various operating modes.Described valve body 4 is the double spherical structure, and the top pellet shapes is high pressure admission chamber 13, and the big spheroid in bottom is a low pressure steam chest 14, high pressure admission chamber 13 is connected with import 10, low pressure steam chest 14 is connected with outlet 11, exports 11 aisle spares greater than import 10 aisle spares, guarantees not produce big noise.Circulation road between high pressure admission chamber 13 and the low pressure steam chest 14 is provided with valve seat 6, and the valve seat of stating 6 adopts welding connection structure with valve body 4, and for preventing the influence of welding deformation to valve seat 6 sealing surfaces, valve seat 6 is provided with welding deformation groove 12.Be provided with the flap 5 that is mated in the valve seat 6, the cross section of flap 5 is streamline structure, and when valve rod 5 moved up and down, 5 of valve seat 6 and flaps formed streamline steam flow passage, can prevent to occur in the valve strong vibration.One end of flap 5 is connected with valve rod 3 one ends, and the other end of valve rod 3 is connected with lever 1.Be provided with throttling cover 7 in the described valve body 4 mesolow steam chests 14, throttling cover 7 is the porous flow linear structure, and it can avoid the direct spary valve body 4 of post-decompression steam, also works to be decompressed to simultaneously outlet 11 desired pressure and noise-decreasings.Import 10 is connected with outlet 11 with flap 5 formation streamline steam flow passages, the inner chamber of throttling cover 7, the throttle orifice 7-1 on the throttling cover 7 by high pressure admission chamber 13, valve seat 6.
Installation process: bottom flange 8 and throttling cover 7 are soldering group components, in the valve body 4 of packing into after the combination.Pack into valve seat 6 of throttling cover 7 is made guiding and is freely stretched.In order to prevent welding deformation, valve seat 6 is provided with welding deformation groove 12, and valve seat 6 is welded in the valve body 4.Pack into after flap 5 and valve rod 3 combinations in the assembly parts of bottom flange 8 and throttling cover 7, the lower end is guiding.Selfsealings bonnet 2 upper end in the valve body 4 of packing into, lever 1 part such as grade is contained on the valve body 4, is connected with final controlling element to realize control automatically.
Working principle: high pressure steam enters high pressure admission chamber, top 13 by the top admission line, when valve rod 3 moves up and down, makes steam pass through the streamline passage and discharges to the bottom, enters low pressure steam chest 14, by the once decompression of variation realization of Flow area; Steam through decompression flows out by curvilinerar figure porous throttling cover 7, realizes the secondary decompression.Outlet 11 aisle spares of steam behind decompression and expansion are designed to bigger than import 10 aisle spares, guarantee not produce big noise.The actuator of configurable electronic, electric liquid of this valve and pneumatic control, flap 5 has good adjusting molded lines, can do Flow characteristicss such as linear LN, equal percentage EP% and parabola.Valve seat 6 has good sealing surface, good seal performance with flap 5.Both can make modulating valve, can make cut-off valve again, and also can make safety valve and use.
In addition to the implementation, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (6)
1, a kind of High Temperature High Pressure reduction valve, mainly form by lever (1), bonnet (2), valve rod (3), valve body (4), valve seat (6) and bottom flange (8), the top of valve body (4) is connected with bonnet (2), valve body (4) bottom is equipped with bottom flange (8), it is characterized in that: the top of described valve body (4) inner chamber is high pressure admission chamber (13), high pressure admission chamber (13) is connected with import (10), the bottom of valve body (4) inner chamber is low pressure steam chest (14), and low pressure steam chest (14) is connected with outlet (11); Circulation road between high pressure admission chamber (13) and the low pressure steam chest (14) is provided with valve seat (6), be provided with the flap (5) that is mated in the valve seat (6), the cross section of flap (5) is streamline structure, when valve rod (5) when moving up and down, form streamline steam flow passage between valve seat (6) and flap (5), one end of flap (5) is connected with valve rod (3) one ends, and the other end of valve rod (3) is connected with lever (1).
2, High Temperature High Pressure reduction valve according to claim 1, it is characterized in that: be provided with throttling cover (7) in described valve body (4) the mesolow steam chest (14), throttling cover (7) is the porous flow linear structure, and import (10) is connected with outlet (11) with flap (5) formation streamline steam flow passage, the inner chamber of throttling cover (7), the throttle orifice (7-1) on the throttling cover (7) by high pressure admission chamber (13), valve seat (6).
3, High Temperature High Pressure reduction valve according to claim 1 and 2 is characterized in that: described valve body (4) is the double spherical structure, and the top pellet shapes is high pressure admission chamber (13), and the big spheroid in bottom is low pressure steam chest (14).
4, High Temperature High Pressure reduction valve according to claim 1 is characterized in that: described bottom flange (8) is provided with hydrophobic (9).
5, High Temperature High Pressure reduction valve according to claim 1 is characterized in that: described valve seat (6) adopts welding connection structure with valve body (4), and valve seat (6) is provided with welding deformation groove (12).
6, High Temperature High Pressure reduction valve according to claim 1 is characterized in that: described outlet (11) aisle spare is greater than import (10) aisle spare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810164000XA CN101440888A (en) | 2008-12-30 | 2008-12-30 | High-temperature high-pressure pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810164000XA CN101440888A (en) | 2008-12-30 | 2008-12-30 | High-temperature high-pressure pressure-reducing valve |
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| Publication Number | Publication Date |
|---|---|
| CN101440888A true CN101440888A (en) | 2009-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810164000XA Pending CN101440888A (en) | 2008-12-30 | 2008-12-30 | High-temperature high-pressure pressure-reducing valve |
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| CN (1) | CN101440888A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434693A (en) * | 2011-12-02 | 2012-05-02 | 杭州华惠阀门有限公司 | Pressure reducing valve |
| CN102563203A (en) * | 2012-03-07 | 2012-07-11 | 杭州华惠阀门有限公司 | Pressure reducing valve and temperature-reducing and pressure-reducing device |
| CN102777670A (en) * | 2012-06-28 | 2012-11-14 | 汉纬尔机械(上海)有限公司 | Lever valve |
| CN107448616A (en) * | 2017-09-02 | 2017-12-08 | 泰州市博圣机械配件厂 | A kind of improved lever valve valve body structure peculiar to vessel |
| CN107504237A (en) * | 2017-09-25 | 2017-12-22 | 泰州市博圣机械配件厂 | A kind of special automatic quick lever valve arrangement peculiar to vessel |
| CN109099166A (en) * | 2018-10-19 | 2018-12-28 | 江苏高特阀业有限公司 | A kind of big pressure-difference valve of high temperature and pressure |
| CN109162669A (en) * | 2018-11-02 | 2019-01-08 | 大庆市天德忠石油科技有限公司 | A kind of oil field high pressure well valve |
| CN113864461A (en) * | 2021-11-02 | 2021-12-31 | 立强阀门有限公司 | Forged steel stop valve that cushioning nature is high |
| CN114352728A (en) * | 2020-10-12 | 2022-04-15 | 浙江盾安人工环境股份有限公司 | Flow regulating valve |
-
2008
- 2008-12-30 CN CNA200810164000XA patent/CN101440888A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434693A (en) * | 2011-12-02 | 2012-05-02 | 杭州华惠阀门有限公司 | Pressure reducing valve |
| CN102563203A (en) * | 2012-03-07 | 2012-07-11 | 杭州华惠阀门有限公司 | Pressure reducing valve and temperature-reducing and pressure-reducing device |
| CN102777670A (en) * | 2012-06-28 | 2012-11-14 | 汉纬尔机械(上海)有限公司 | Lever valve |
| CN107448616A (en) * | 2017-09-02 | 2017-12-08 | 泰州市博圣机械配件厂 | A kind of improved lever valve valve body structure peculiar to vessel |
| CN107504237A (en) * | 2017-09-25 | 2017-12-22 | 泰州市博圣机械配件厂 | A kind of special automatic quick lever valve arrangement peculiar to vessel |
| CN109099166A (en) * | 2018-10-19 | 2018-12-28 | 江苏高特阀业有限公司 | A kind of big pressure-difference valve of high temperature and pressure |
| CN109162669A (en) * | 2018-11-02 | 2019-01-08 | 大庆市天德忠石油科技有限公司 | A kind of oil field high pressure well valve |
| CN109162669B (en) * | 2018-11-02 | 2019-05-03 | 大庆市天德忠石油科技有限公司 | A kind of oil field high pressure well valve |
| CN114352728A (en) * | 2020-10-12 | 2022-04-15 | 浙江盾安人工环境股份有限公司 | Flow regulating valve |
| CN113864461A (en) * | 2021-11-02 | 2021-12-31 | 立强阀门有限公司 | Forged steel stop valve that cushioning nature is high |
| CN113864461B (en) * | 2021-11-02 | 2022-07-05 | 立强阀门有限公司 | Forged steel stop valve that cushioning nature is high |
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Open date: 20090527 |