CN111022667A - High-performance single-clack double-seal pneumatic regulating valve for nuclear power - Google Patents
High-performance single-clack double-seal pneumatic regulating valve for nuclear power Download PDFInfo
- Publication number
- CN111022667A CN111022667A CN201911265748.3A CN201911265748A CN111022667A CN 111022667 A CN111022667 A CN 111022667A CN 201911265748 A CN201911265748 A CN 201911265748A CN 111022667 A CN111022667 A CN 111022667A
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- CN
- China
- Prior art keywords
- valve
- clack
- cover
- core shaft
- nuclear power
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- 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.)
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Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
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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
- F16K27/12—Covers for housings
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to a high-performance single-petal double-seal pneumatic regulating valve for nuclear power, which comprises a valve body, a valve cover, a valve seat and a valve clack assembly, wherein the valve cover is arranged on the valve body to form a valve cavity; the valve clack assembly comprises a valve clack and a valve clack, the valve clack is opposite to a valve seat and is in sealing fit to form external seal, a circular groove is formed in the top of the valve clack, a circular hole is formed in the bottom of the circular groove, a valve clack cover is covered on the valve clack, the valve core shaft sequentially penetrates through a valve cover, a valve cavity and the valve clack cover along the vertical direction to extend into the circular groove, a circular bulge is formed in the valve core shaft, the lower end of the valve core shaft is opposite; the valve core shaft is also sleeved with a spring, and two ends of the spring are respectively fixed on the annular convex and the valve clack. The sealing performance is good, the operating torque is small, the service life is long, the cost is reduced and increased, and the use working condition of the nuclear power unit is met.
Description
Technical Field
The invention relates to a valve, in particular to a high-performance single-clack double-seal pneumatic regulating valve for nuclear power.
Background
The traditional opening and closing piece has large damage of media to a valve core shaft and a valve clack at the opening and closing moment of a valve, and the opening and closing moment of the regulating valve is large, so that the traditional opening and closing piece is not suitable for opening or closing control of a nuclear power unit.
Disclosure of Invention
In order to solve the problems, the invention provides the high-performance single-clack double-seal pneumatic regulating valve for the nuclear power, which is suitable for the opening or closing control of the nuclear power unit and has the advantages of good sealing performance, small operating torque and long service life.
The technical scheme of the invention is as follows:
a high-performance single-flap double-seal pneumatic regulating valve for nuclear power comprises a valve body, a valve cover, a valve seat and a valve flap assembly, wherein the valve cover is arranged on the valve body to form a valve cavity; the valve clack assembly comprises a valve clack and a valve clack, the valve clack is opposite to a valve seat and is in sealing fit to form external seal, a circular groove is formed in the top of the valve clack, a circular hole is formed in the bottom of the circular groove, a valve clack cover is covered on the valve clack, the valve core shaft sequentially penetrates through a valve cover, a valve cavity and the valve clack cover along the vertical direction to extend into the circular groove, a circular bulge is formed in the valve core shaft, the lower end of the valve core shaft is opposite; the valve core shaft is also sleeved with a spring, and two ends of the spring are respectively fixed on the annular convex and the valve clack.
When the valve is opened, the valve core shaft is lifted firstly, the spring in the inner cavity of the valve clack is expanded to prop against the valve core shaft to move upwards, and the valve core shaft is small in stress area and easy to open; when the valve is closed, the valve core shaft is firstly descended to drive the valve clack to move downwards, so that the outer sealing surface of the valve clack and the sealing surface of the replaceable valve seat form sealing, and the valve core shaft continues to move downwards, so that the sealing surface of the valve core shaft and the sealing surface of the inner cavity of the valve clack form sealing. The structure reduces the damage of the medium to the valve core shaft and the valve clack at the moment of opening and closing the valve, avoids the defect of large opening and closing moment of the regulating valve, and reduces the moment and the manufacturing cost of the actuator.
Furthermore, the inlet is communicated with the upper part of the valve cavity, the outlet is communicated with the bottom of the valve cavity, and the valve seat is positioned at the joint of the outlet and the valve cavity; a cover column is also arranged in the valve cavity, is fixedly arranged on the valve body, is sleeved on the valve clack assembly and is in sliding sealing contact with the valve clack assembly; a plurality of unloading holes are uniformly distributed on the periphery of the cover column; a winding gasket is arranged between the cover and the valve body; the valve core shaft is high in inlet and low in outlet, and in the lifting process of the valve core shaft, a medium passes through the unloading hole in the cover column, so that the pressure difference at two ends of the valve is gradually reduced, the pressure and the flow of the medium are controlled, the opening moment of the valve is relatively reduced, the size of the valve core shaft can be relatively reduced, the specification of an operating device can be reduced, the material is saved, and the cost is reduced.
Furthermore, a packing pressing sleeve, a packing and a packing pad are sequentially arranged between the valve cover and the valve core shaft from top to bottom, and a plurality of disc springs are arranged between the packing pressing sleeve and the packing; the upper end of the valve cover is sleeved with a locking nut, and the locking nut is opposite to the packing pressing sleeve; the packing pressing sleeve is provided with a plurality of belleville springs, so that the packing pressing sleeve always acts on larger pressure on the packing, the leakage caused by the loose threads on the packing pressing sleeve or the loose packing can be prevented, and the packing load is always kept constant.
Furthermore, a pneumatic actuator is installed on the regulating valve, the pneumatic actuator is connected with the valve core shaft in a driving mode, and the valve core shaft is driven to drive the valve clack assembly to move up and down.
Furthermore, a sewage draining hole is also formed in the adjusting valve.
The invention has the advantages of simple structure, reasonable design, good sealing performance, small operating torque, long service life, reduced cost and increased volume, and can meet the use working condition of the nuclear power unit.
Drawings
FIG. 1 is a schematic structural diagram of a high-performance single-clack double-seal pneumatic control valve for nuclear power.
Fig. 2 is a schematic view of a unitary valve spool construction.
In the figure, a valve body 1, a valve cover 2, a valve seat 3, a valve cavity 4, an inlet 6, an outlet 7, a valve core shaft 8, a valve clack 4-1, a valve clack 4-2, a spring 9, a cover column 10, an unloading hole 10-1, a winding gasket 11, a packing pressing sleeve 12, a packing 13, a packing pad 14, a belleville spring 15 and a sewage discharge hole 17 are arranged in a disc-.
Detailed Description
As shown in fig. 1-2, a high-performance single-flap double-seal pneumatic regulating valve for nuclear power comprises a valve body 1, a valve cover 2, a valve seat 3 and a valve flap assembly 4, wherein the valve cover 2 is installed on the valve body 1 to form a valve cavity 5, an inlet 6 and an outlet 7 are respectively arranged at two ends of the valve body 1, the inlet 6 is communicated with the upper part of the valve cavity 5, the outlet 7 is communicated with the bottom of the valve cavity 5, the valve seat 3 is horizontally arranged in the valve cavity 5 and is detachably connected with the valve body 1 and is positioned at the joint of the outlet 7 and the valve cavity 5, the valve flap assembly 4 is arranged on the valve seat 3 and is driven by a valve core shaft 8 to move up; the valve clack assembly 4 comprises a valve clack 4-1 and a valve clack 4-2, the valve clack 4-1 is opposite to a valve seat 3 and is in sealing fit to form outer seal, a circular groove is formed in the top of the valve clack 4-2, a circular hole is formed in the bottom of the circular groove, a valve clack cover 4-1 is covered on the valve clack 4-2, the valve core shaft 8 sequentially penetrates through the valve cover 2, the valve cavity 5 and the valve clack cover 4-1 along the vertical direction and extends into the circular groove, a ring bulge 8-1 is arranged on the valve core shaft, the lower end of the valve core shaft 8 is opposite; the valve core shaft 8 is also sleeved with a spring 9, and two ends of the spring 9 are respectively fixed on the annular protrusion 8-1 and the valve clack 4-2; a cover column 10 is also arranged in the valve cavity 5, and the cover column 10 is fixedly arranged on the valve body 1, sleeved on the valve clack assembly 4 and in sliding sealing contact with the valve clack assembly 4; a plurality of unloading holes 10-1 are uniformly distributed on the peripheral side of the cover column 10; a winding gasket 11 is arranged between the cover 10 and the valve body 1; a packing pressing sleeve 12, a packing 13 and a packing pad 14 are sequentially arranged between the valve cover 2 and the valve core shaft 8 from top to bottom, and a plurality of disc springs 15 are arranged between the packing pressing sleeve 12 and the packing 13; the upper end of the valve cover 2 is sleeved with a locking nut 16, and the locking nut 16 is opposite to the packing pressing sleeve 12; the regulating valve is provided with a pneumatic actuator, the pneumatic actuator is in driving connection with the valve core shaft 8, and the valve core shaft 8 is driven to drive the valve clack assembly 4 to move up and down; and a sewage draining hole 17 is also formed in the regulating valve.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (5)
1. A high-performance single-flap double-seal pneumatic regulating valve for nuclear power comprises a valve body, a valve cover, a valve seat and a valve flap assembly, wherein the valve cover is arranged on the valve body to form a valve cavity; the valve core assembly is characterized by comprising a valve clack and a valve clack, wherein the valve clack is opposite to a valve seat and is in sealing fit to form external seal; the valve core shaft is also sleeved with a spring, and two ends of the spring are respectively fixed on the annular convex and the valve clack.
2. The high-performance single-clack double-seal pneumatic regulating valve for nuclear power as claimed in claim 1, wherein the inlet is communicated with the upper part of the valve cavity, the outlet is communicated with the bottom of the valve cavity, and the valve seat is positioned at the joint of the outlet and the valve cavity; a cover column is also arranged in the valve cavity, is fixedly arranged on the valve body, is sleeved on the valve clack assembly and is in sliding sealing contact with the valve clack assembly; a plurality of unloading holes are uniformly distributed on the periphery of the cover column; and a winding gasket is arranged between the cover and the valve body.
3. The high-performance single-clack double-seal pneumatic regulating valve for nuclear power as claimed in claim 1, wherein a packing pressing sleeve, a packing and a packing pad are sequentially arranged from top to bottom between the valve cover and the valve core shaft, and a plurality of disc springs are further arranged between the packing pressing sleeve and the packing; the upper end of the valve cover is sleeved with a locking nut, and the locking nut is opposite to the packing pressing sleeve.
4. The high-performance single-clack double-sealing pneumatic regulating valve for the nuclear power as claimed in claim 1, wherein a pneumatic actuator is mounted on the regulating valve, the pneumatic actuator is connected with a valve core shaft in a driving mode, and the valve core shaft is driven to drive the valve clack assembly to move up and down.
5. The high-performance single-clack double-seal pneumatic regulating valve for nuclear power as claimed in claim 1, wherein a sewage draining hole is further formed in the regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911265748.3A CN111022667A (en) | 2019-12-11 | 2019-12-11 | High-performance single-clack double-seal pneumatic regulating valve for nuclear power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911265748.3A CN111022667A (en) | 2019-12-11 | 2019-12-11 | High-performance single-clack double-seal pneumatic regulating valve for nuclear power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111022667A true CN111022667A (en) | 2020-04-17 |
Family
ID=70205765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911265748.3A Pending CN111022667A (en) | 2019-12-11 | 2019-12-11 | High-performance single-clack double-seal pneumatic regulating valve for nuclear power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111022667A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503201A (en) * | 2020-11-27 | 2021-03-16 | 江苏盐阜电站阀门辅机制造有限公司 | Supercritical high-pressure bivalve pressure-relief sewage-discharge type pneumatic flow regulating valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2727734A1 (en) * | 1994-12-06 | 1996-06-07 | Control Valves Sarl | Control valve with two flow characteristic, used in industrial and heating purposes |
| CN202852408U (en) * | 2012-10-13 | 2013-04-03 | 南通国电电站阀门有限公司 | Ultra-supercritical non-spinning spherical steam trap valve |
| CN105042092A (en) * | 2015-07-03 | 2015-11-11 | 南通国电电站阀门有限公司 | Supercritical high-pressure double-flap pressure relief sewage discharge type pneumatic flow regulating valve |
-
2019
- 2019-12-11 CN CN201911265748.3A patent/CN111022667A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2727734A1 (en) * | 1994-12-06 | 1996-06-07 | Control Valves Sarl | Control valve with two flow characteristic, used in industrial and heating purposes |
| CN202852408U (en) * | 2012-10-13 | 2013-04-03 | 南通国电电站阀门有限公司 | Ultra-supercritical non-spinning spherical steam trap valve |
| CN105042092A (en) * | 2015-07-03 | 2015-11-11 | 南通国电电站阀门有限公司 | Supercritical high-pressure double-flap pressure relief sewage discharge type pneumatic flow regulating valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503201A (en) * | 2020-11-27 | 2021-03-16 | 江苏盐阜电站阀门辅机制造有限公司 | Supercritical high-pressure bivalve pressure-relief sewage-discharge type pneumatic flow regulating valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200417 |
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| RJ01 | Rejection of invention patent application after publication |