CN109578594B - Sodium medium regulating valve - Google Patents
Sodium medium regulating valve Download PDFInfo
- Publication number
- CN109578594B CN109578594B CN201811541202.1A CN201811541202A CN109578594B CN 109578594 B CN109578594 B CN 109578594B CN 201811541202 A CN201811541202 A CN 201811541202A CN 109578594 B CN109578594 B CN 109578594B
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- valve
- clack
- sodium
- rod
- rectangular cavity
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims abstract description 49
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 49
- 239000011734 sodium Substances 0.000 title claims abstract description 49
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 39
- 238000013461 design Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 240000001085 Trapa natans Species 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 235000009165 saligot Nutrition 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- 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
-
- 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
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- 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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
-
- 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
- F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention belongs to the field of reactor engineering, and particularly relates to a sodium medium regulating valve, which comprises a valve body with a valve cavity, wherein a sodium medium inlet and a sodium medium outlet are arranged on the valve body; a temperature sensor is arranged at the outer side of the valve body; the upper end of the valve body is fixedly and hermetically connected with a valve cover; the upper part of the valve cover is fixedly connected with a rectangular cavity bracket, and the upper end of the rectangular cavity bracket is fixedly and hermetically connected with a valve electric device; a valve core assembly is arranged in the valve cavity, wherein the valve core assembly consists of a valve rod, a valve clack and a corrugated pipe; therefore, the sodium medium regulating valve can reduce the height of the regulating valve, increase the shock resistance and improve the regulating precision.
Description
Technical Field
The disclosure belongs to the field of reactor engineering, and in particular relates to a sodium medium regulating valve.
Background
The first loop, the second loop and the auxiliary system of the sodium-cooled fast reactor all adopt liquid metal sodium as coolant, and a large number of sodium valves are required to be arranged on the pipelines of the sodium system, so that the sodium valves not only have the characteristics of common electric valves, but also have the characteristics of high working temperature, need to be provided with electric heating equipment, strict sealing requirements and the like due to the active chemical property and atypical metal physical property of sodium.
The sodium medium regulating valve is a fast reactor sodium valve, has the characteristics of frequent action, high regulating precision, bad use conditions and the like besides the characteristics of the sodium valve, and is widely applied to a sodium purifying system, a sodium analysis monitoring system and other systems of an exemplary fast reactor.
The current sodium medium regulating valves used on the test fast reactor all adopt throttling valve clacks, the regulating precision is poor, the repeatability is poor, the non-regulating area is large, and the throttling valve clacks are severely eroded under high temperature and high flow rate. In order to remedy the defects, the invention improves and innovates partial structures and has good application effect.
The current sodium medium regulating valves used on the test fast reactor all adopt throttle valve clacks, the valve clacks have poor regulating precision, poor repeatability and large non-regulating area; meanwhile, the regulating valve adopts a fin heat dissipation structure, so that the height of the regulating valve is too high, and poor anti-seismic performance is caused; therefore, a sodium medium regulating valve capable of reducing the height of the regulating valve, increasing the shock resistance and improving the regulating precision is needed.
Disclosure of Invention
Object of the invention
In order to overcome the defects of the prior art, the present disclosure provides a sodium medium regulating valve which can reduce the height of the regulating valve, increase the shock resistance and improve the regulating precision.
(II) technical scheme
A sodium medium regulating valve comprises a valve body with a valve cavity, wherein a sodium medium inlet and a sodium medium outlet are arranged on the valve body; a temperature sensor is arranged at the outer side of the valve body; the upper end of the valve body is fixedly and hermetically connected with a valve cover;
the upper part of the valve cover is fixedly connected with a rectangular cavity bracket, and the upper end of the rectangular cavity bracket is fixedly and hermetically connected with a driving device;
a valve core assembly is arranged in the valve cavity, wherein the valve core assembly consists of a valve rod, a valve clack and a corrugated pipe;
the outer wall of the valve rod is sleeved with a corrugated pipe, and the corrugated pipe is positioned between the valve cover and a corrugated pipe adjusting nut of the valve rod;
the lower end of the valve rod is fixedly connected with the valve clack, the outer wall of the valve rod is sleeved with a corrugated pipe assembly, and the upper end of the valve rod sequentially penetrates through the valve cover and the rectangular cavity bracket to be connected with the driving device;
the valve clack in the valve core component adopts a claw-type valve clack, and the claw-type valve clack comprises a valve clack cap and a valve clack body, wherein the valve clack cap is of a cylindrical structure, and the valve clack cap is fixedly connected with the valve rod; the valve clack body is the tubular structure, and the pipe wall is provided with the hole that runs through, the design of the hole shape of valve clack body pipe wall can make the variable quantity of sodium medium governing valve's flow and claw valve clack's travel distance linear relation.
And a packing seal is adopted between the valve rod and the valve cover.
And a limit pin of the valve rod is arranged on the sealing assembly between the rectangular cavity bracket and the driving device.
The water caltrop on the outer surface of the valve body adopts arc transition.
The upper part of the valve body is provided with a connecting flange.
A lip seal welding structure is arranged at the connecting flange at the upper part of the valve body.
The valve cover is welded with the valve body and is matched with a double-end stud connection and a double-lug stop washer.
The rectangular cavity bracket is connected with the valve cover through studs, and is matched with a double-lug stop washer.
The valve body, the valve cover, the valve rod and the valve clack are all made of F316H stainless steel materials.
The driving device is a valve electric device.
(III) beneficial effects
The rectangular cavity bracket is adopted to replace the original fin heat dissipation mode, so that the heat conduction sectional area is reduced, the contact area with air is increased, and the heat dissipation effect is improved; the height of the valve is reduced to the maximum extent, and the natural frequency of the valve is greatly improved; the reduction of the valve height improves the overall anti-seismic performance of the valve.
The sodium medium regulating valve disclosed by the invention is characterized in that a claw-shaped valve clack is designed to replace an original throttling valve clack, and comprises a valve clack cap and a valve clack body after the claw-shaped valve clack is adopted, wherein the valve clack cap is of a cylindrical structure, and the valve clack cap is fixedly connected with a valve rod; the valve clack body is of a circular tube type structure, the tube wall is provided with a through hole, and the design of the hole shape of the tube wall of the valve clack body can enable the variable quantity of the flow of the sodium medium regulating valve to be in a linear relation with the moving distance of the claw-type valve clack; therefore, the relation between the flow area and the valve opening is more similar to that of the equal straight line adjustment, the adjustable range is larger, and the adjustment precision control of the sodium medium adjusting valve is facilitated.
Drawings
FIG. 1 is a schematic diagram of a sodium media regulator valve in one embodiment of the present disclosure;
fig. 2 is a schematic diagram of a rectangular cavity bracket structure of the sodium media control valve of fig. 1:
FIG. 3 is a schematic diagram of the valve clack structure of the sodium mediator regulating valve of FIG. 1;
wherein the valve is electrically arranged at 1, the rectangular cavity bracket 3, the valve cover 4, the valve rod 5, the corrugated pipe 6, the adjusting nut 7, the valve clack 8, the valve body 9, the temperature sensor 10, the thermowell 11, the packing seal 12, the valve clack cap 13 and the valve clack body 14 are provided with holes
Detailed Description
In order to better explain the technical scheme of the disclosure, the following description is made with reference to specific embodiments:
the embodiment of the disclosure adopts a DN80 sodium regulating valve, the regulating valve comprises a valve body 8 with a valve cavity, and a sodium medium inlet and a sodium medium outlet are arranged on the valve body 8; the outer side of the valve body 8 is provided with a temperature sensor 9; the upper end of the valve body 8 is fixedly and hermetically connected with a valve cover 3;
the upper part of the valve cover 3 is fixedly connected with a rectangular cavity bracket 2, and the upper end of the rectangular cavity bracket 2 is fixedly and hermetically connected with a valve electric device 1; a valve core assembly is arranged in the valve cavity, wherein the valve core assembly consists of a valve rod 4, a valve clack 7 and a corrugated pipe 5; the outer wall of the valve rod 4 is sleeved with a corrugated pipe 5, and the corrugated pipe 5 is positioned between the valve cover 3 and a corrugated pipe adjusting nut 6 of the valve rod 4; the lower end of the valve rod 4 is fixedly connected with the valve clack 7, the outer wall of the valve rod 4 is sleeved with a corrugated pipe 5, and the upper end of the valve rod 4 sequentially passes through the valve cover 3 and the rectangular cavity bracket 2 to be connected with the valve electric device 1; wherein a claw-type valve clack 7 is adopted as a valve clack 7 in the valve core assembly, the claw-type valve clack 7 comprises a valve clack cap 12 and a valve clack body 13, the valve clack cap 12 is of a cylindrical structure, and the valve clack cap 12 is fixedly connected with the valve rod 4; the valve clack body 13 is of a circular tube type structure, the tube wall is provided with a through hole 14, and the design of the shape of the hole 14 of the tube wall of the valve clack body 13 can enable the flow variable quantity of the sodium medium regulating valve to be in linear relation with the moving distance of the claw-type valve clack. A packing seal 11 is adopted between the valve rod 4 and the valve cover 3. A limit pin of the valve rod 4 is arranged on the sealing component between the rectangular cavity bracket 2 and the valve electric device 1. The water caltrop on the outer surface of the valve body 8 adopts arc transition. The upper part of the valve body 8 is provided with a connecting flange. A lip seal welding structure is arranged at the upper connecting flange of the valve body 8. The valve cover 3 is welded with the valve body 8 and is matched with a double-end stud connection and a double-lug stop washer. The rectangular cavity bracket 2 and the valve cover 3 and the rectangular cavity bracket 2 and the valve electric device 1 are connected by stud bolts and are matched with double-lug stop washers. The valve body 8, the valve cover 3, the valve rod 4 and the valve clack 7 are all made of F316H stainless steel materials. The design of the rectangular cavity bracket 2 replaces the original fin heat dissipation mode, so that the heat conduction sectional area is reduced, the contact area with air is increased, and the heat dissipation effect is improved; the height of the valve is reduced to the maximum extent, and the natural frequency of the valve is greatly improved; the reduction of the valve height improves the overall anti-seismic performance of the valve.
The valve is electrically operated by an operator, and the valve rod 4 drives the valve clack 7 to move up and down, so that the flow control requirement of the valve is met.
The valve rod 4 and the valve rod nut adopt trapezoidal threads as thread transmission pairs, and the trapezoidal threads have self-locking performance, so that the valve opening does not need to be worried about automatic change of the valve opening due to the acting force of a medium.
The claw-shaped valve clack 7 is adopted by the regulating valve, the original throttling valve clack 7 is effectively replaced, the structure of the claw-shaped valve clack 7 is better than that of a flow field of the throttling valve clack 7 in incompressible fluid, the flow is controlled more obviously, and therefore the regulating precision of the regulating valve is greatly improved. In the embodiment, for the four hollowed holes 14 in a shape like a Chinese character 'ji' designed on the valve clack body 13 of the DN80 regulating valve, the flow area of the holes 14 is in linear relation with the axial distance of the valve clack body 13, so that the linear relation between the variable quantity of the flow of the sodium medium regulating valve and the moving distance of the claw-type valve clack 7 is ensured; therefore, the relation between the flow area and the valve opening is more similar to that of the equal straight line adjustment, the adjustable range is larger, and the adjustment precision control of the sodium medium adjusting valve is facilitated.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present disclosure without departing from the spirit or scope of the disclosure. Thus, the present disclosure is intended to include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof. The foregoing examples or embodiments are merely illustrative of the present disclosure, which may be embodied in other specific forms or with other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the present disclosure should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims are intended to be encompassed within the scope of the present disclosure.
Claims (9)
1. A sodium medium regulating valve comprises a valve body (8) with a valve cavity, wherein a sodium medium inlet and a sodium medium outlet are arranged on the valve body (8); a temperature sensor (9) is arranged at the outer side part of the valve body (8); the upper end of the valve body (8) is fixedly and hermetically connected with a valve cover (3); it is characterized in that the method comprises the steps of,
the upper part of the valve cover (3) is fixedly connected with a rectangular cavity bracket (2), and the upper end of the rectangular cavity bracket (2) is fixedly and hermetically connected with a driving device;
a valve core assembly is arranged in the valve cavity, wherein the valve core assembly consists of a valve rod (4), a valve clack (7) and a corrugated pipe (5);
the outer wall of the valve rod (4) is sleeved with a corrugated pipe (5), and the corrugated pipe (5) is positioned between the valve cover (3) and a corrugated pipe adjusting nut (6) of the valve rod (4); a limit pin of the valve rod (4) is arranged on the sealing component between the rectangular cavity bracket (2) and the driving device;
the lower end of the valve rod (4) is fixedly connected with the valve clack (7), the outer wall of the valve rod (4) is sleeved with a corrugated pipe (5), and the upper end of the valve rod (4) sequentially penetrates through the valve cover (3) and the rectangular cavity bracket (2) to be connected with a driving device;
the valve clack (7) in the valve core assembly adopts a claw-type valve clack (7), the claw-type valve clack (7) comprises a valve clack cap (12) and a valve clack body (13), the valve clack cap (12) is of a cylindrical structure, and the valve clack cap (12) is fixedly connected with the valve rod (4); the valve clack body (13) is of a circular tube type structure, the tube wall is provided with a through hole (14), the design of the shape of the hole (14) of the tube wall of the valve clack body (13) can enable the flow variable quantity of the sodium medium regulating valve to be in linear relation with the moving distance of the claw-type valve clack, and the hole (14) is a hollow hole in a shape like a Chinese character 'ji'.
2. A sodium media regulator valve according to claim 1, characterized in that a packing seal (11) is used between the valve stem (4) and the valve cap (3).
3. A sodium medium regulating valve according to claim 1, characterized in that the water caltrops of the outer surface of the valve body (8) all adopt circular arc transition.
4. A sodium media regulator valve according to claim 1, characterized in that the upper part of the valve body (8) is provided with a connecting flange.
5. A sodium media regulator valve according to claim 4, characterized in that the upper connecting flange of the valve body (8) is provided with a lip seal welding structure.
6. A sodium media regulator valve according to claim 1, characterized in that the valve cap (3) is welded to the valve body (8) and is fitted with a stud connection and a binaural stop washer.
7. A sodium media control valve according to claim 1, characterized in that studs are used between the rectangular cavity bracket (2) and the valve cover (3) and between the rectangular cavity bracket (2) and the driving device, and a double-lug stop washer is fitted.
8. The sodium medium regulating valve according to claim 1, wherein the valve body (8), the valve cover (3), the valve rod (4) and the valve clack (7) are all made of F316H stainless steel materials.
9. A sodium mediator control valve according to claim 1, characterised in that the actuating means is a valve electrical device (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811541202.1A CN109578594B (en) | 2018-12-17 | 2018-12-17 | Sodium medium regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811541202.1A CN109578594B (en) | 2018-12-17 | 2018-12-17 | Sodium medium regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578594A CN109578594A (en) | 2019-04-05 |
| CN109578594B true CN109578594B (en) | 2023-09-29 |
Family
ID=65929730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811541202.1A Active CN109578594B (en) | 2018-12-17 | 2018-12-17 | Sodium medium regulating valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN109578594B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202020105473U1 (en) * | 2020-09-24 | 2020-11-11 | Samson Aktiengesellschaft | Yoke for connecting a drive and electrical and / or mechatronic components to a control valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2358290Y (en) * | 1999-01-25 | 2000-01-12 | 黄作兴 | Bidirectional metal sealing ball valve |
| CN201531621U (en) * | 2009-09-28 | 2010-07-21 | 株洲华清阀门机械制造有限公司 | Energy-saving balance corrugated pipe valve |
| CN202927062U (en) * | 2012-11-05 | 2013-05-08 | 浙江中泰阀门有限公司 | Corrugated pipe stop valve |
| CN108167462A (en) * | 2018-02-08 | 2018-06-15 | 江苏金晟元特种阀门股份有限公司 | Corrugated pipe chlorine dedicated regulation valve |
| CN108361423A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | The electronic bellows angle type stop check valve of core level-one heavy caliber |
-
2018
- 2018-12-17 CN CN201811541202.1A patent/CN109578594B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2358290Y (en) * | 1999-01-25 | 2000-01-12 | 黄作兴 | Bidirectional metal sealing ball valve |
| CN201531621U (en) * | 2009-09-28 | 2010-07-21 | 株洲华清阀门机械制造有限公司 | Energy-saving balance corrugated pipe valve |
| CN202927062U (en) * | 2012-11-05 | 2013-05-08 | 浙江中泰阀门有限公司 | Corrugated pipe stop valve |
| CN108167462A (en) * | 2018-02-08 | 2018-06-15 | 江苏金晟元特种阀门股份有限公司 | Corrugated pipe chlorine dedicated regulation valve |
| CN108361423A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | The electronic bellows angle type stop check valve of core level-one heavy caliber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109578594A (en) | 2019-04-05 |
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