CN108561563B - Corrugated pipe guide type stop check valve for nuclear power island core - Google Patents
Corrugated pipe guide type stop check valve for nuclear power island core Download PDFInfo
- Publication number
- CN108561563B CN108561563B CN201810545787.8A CN201810545787A CN108561563B CN 108561563 B CN108561563 B CN 108561563B CN 201810545787 A CN201810545787 A CN 201810545787A CN 108561563 B CN108561563 B CN 108561563B
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- China
- Prior art keywords
- valve
- clack
- corrugated pipe
- cavity
- groove cavity
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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
- F16K1/02—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 with screw-spindle
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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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
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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
- F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a corrugated pipe guide type stop check valve for nuclear power island cores in the field of high-temperature pipeline equipment, which comprises a valve body, a valve seat, a valve cover, a valve clack cover, a valve rod, a middle head gasket, a filler pad, a pressing plate, a pressing sleeve, a gear head, a guide plate, a corrugated pipe, a valve clack guide ring, a screw plug and an opening and closing position indicator, wherein the two ends of the valve body are an inlet and an outlet of the valve body, the valve body is provided with a low-groove cavity and a high-groove cavity, the inlet and the outlet of the valve body are on the low-groove side, the valve seat is arranged between the low-groove cavity and the high-groove cavity, the valve seat is provided with the valve clack guide ring below, the valve seat is provided with the valve cover for stopping liquid flow between the low-groove cavity and the high-groove cavity, the valve cover is, the valve rod moves up and down along the cavity, the corrugated pipe is an elastic pipe body, and the corrugated pipe enables the valve clack to rise through the valve clack cover.
Description
Technical Field
The invention relates to a corrugated pipe guide type stop check valve for a nuclear power island core, belonging to the field of high-temperature pipeline equipment.
Background
The function of the traditional stop valve is to stop or connect the medium in the pipeline; the function of the check valve is to control the media backflow. The stop check valves adopted in China at present have the defects of high manufacturing requirements, easy leakage, short service life and the like. The corrugated pipe guide type stop check valve has reasonable sealing structure and corrosion resistance, long service life, less maintenance times and reduced operation cost. The bellows seal design, which is robust, ensures zero leakage of the valve stem, providing a maintenance free condition. The valve has small opening and closing torque and reduces the labor intensity. The outer seal of the valve adopts bellows seal and graphite, stainless steel gasket seal, the sealing is reliable, and the sealing filler can not be replaced after long-term use. The design and manufacture strictly adopt the foreign advanced standards. The corrugated pipe guide type stop check valve has multiple functions, high use frequency and easy abrasion of a sealing surface of the valve, and a detachable valve seat is required to be designed, so that the maintenance is convenient. And the wear resistance of the sealing surface of the valve is improved by adopting the STL hard alloy material.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the corrugated pipe guide type stop check valve for the nuclear power island core, which has the advantages of good sealing property, corrosion resistance, long service life and reduced operation cost.
The invention is realized by the following technical scheme:
the utility model provides a nuclear power island heart is with bellows direction formula stop check valve, includes valve body, disk seat, valve gap, valve clack lid, valve rod, well first gasket, packs, packing pad, clamp plate, presses cover, gear head, deflector, bellows, valve clack guide ring, plug screw and opens and close position indicator, its characterized in that: the both ends of valve body be the exit of valve body, the valve body is equipped with low groove cavity and high groove cavity, the import of valve body is low groove side, the exit of valve body is high groove side, be equipped with the disk seat between low groove cavity and high groove cavity, the disk seat has the valve clack guide ring, be equipped with the valve clack on the disk seat, the valve clack is by the liquid flow between low groove cavity and high groove cavity, be equipped with the valve clack lid on the valve clack, the valve clack has the guide bar, the valve rod is located the cavity of valve clack lid and bellows, the valve rod reciprocates along the cavity, the bellows is the elasticity body, the bellows makes the valve clack. The original valve clack cover plays a role in guiding the valve rod, and the corrugated pipe guide type stop check valve has multiple functions and higher use frequency; the technical scheme is further explained as follows: the inlet and the outlet of the valve body are connected with a pipeline in a welding mode; the technical scheme is further explained as follows: the bottom of the valve body is provided with a sewage discharge hole, so that dirt can be conveniently removed; the technical scheme is further explained as follows: the valve rod is lifted by a rotary nut, the valve rod is in small-pitch thread transmission, micro-adjustment of flow can be realized, and a closed position indicator is arranged at the upper end of the valve rod and used for controlling the opening and closing stroke of the valve; the technical scheme is further explained as follows: and the sealing surface between the valve seat and the valve clack is made of STL hard alloy material, so that the wear resistance of the sealing surface of the valve is improved.
The invention has the characteristics of good sealing, corrosion resistance, long service life and the like.
Drawings
FIG. 1 is a schematic structural view of a bellows guide type stop check valve for a nuclear power island core.
In the figure: the valve comprises a valve body 1, a valve seat 2, a valve cover 3, a valve clack cover 4, a valve rod 5, a valve body cover 6, a packing 7, a packing pad 8, a pressing plate 9, a pressing sleeve 10, a guide plate 11, a gear head 12, a nut 13, a corrugated pipe 14, a valve clack guide ring 15, a screw plug 16, a sewage discharge hole 17, a middle head pad 18 and an opening and closing position indicator 19.
Detailed Description
The invention will be further explained with reference to the accompanying drawings:
the structure of the corrugated pipe guide type stop check valve for the nuclear power island core is shown in the figure, and comprises a valve body 1, a valve seat 2, a valve cover 3, a valve clack cover 4, a valve rod 5, a valve body cover 6, a filler 7, a filler pad 8, a pressing plate 9, a pressing sleeve 10, a guide plate 11, a gear head 12, a nut 13, a corrugated pipe 14, a valve clack guide ring 15, a plug screw 16, a sewage discharge hole 17, a middle head pad 18 and an opening and closing position indicator 19.
The invention aims to provide a valve which adopts a corrugated pipe guide type structure, has a detachable valve seat and is convenient to maintain. The corrugated pipe guide type stop check valve for the nuclear power island core meets the use working condition by solving the problem of a multi-purpose structure of a valve.
Design scheme
(1) User research → determination of technical requirements and technical conditions of projects → design calculation, determination of technical parameters such as wall thickness of a valve pressure-bearing part → design of a valve.
(2) The product structure is as follows: the nuclear power island core is a corrugated pipe guide type stop check valve.
(3) Consists of the following components: the valve comprises a valve body, a valve seat, a valve cover, a valve clack cover, a valve rod, a middle head gasket, a filler pad, a pressing plate, a pressing sleeve, a gear head, a guide plate, a corrugated pipe, a valve clack guide ring, a plug screw, an opening and closing position indicator and the like.
(4) The connection mode is as follows: the inlet and outlet are welded.
Improved scheme
(1) The original valve clack cover is used for connecting the valve rod with the valve clack, and is connected with the valve clack instead to play a role in guiding the valve rod.
(2) The original valve seat is welded on the body and is not easy to disassemble. The valve seat is changed into a detachable valve seat, so that the maintenance is convenient.
(3) When the medium enters from the low groove, the medium is a stop valve; when the medium enters from the high groove, the check valve is used for multiple purposes.
(4) Adding a sewage discharge hole to remove sewage; and an opening and closing position indicator is added to control the opening and closing stroke of the valve.
(5) The valve rod adopts the small-pitch thread transmission, and the micro-adjustment of the flow can be realized.
(6) The valve rod of the original stop valve rotates the valve rod nut and does not rotate. The valve rod is not rotated, the valve rod nut is rotated, and the valve rod nut moves up and down linearly.
Method of implementation
1. The method comprises the steps of user research → determination of technical requirements and technical conditions of projects → design calculation, determination of technical parameters such as wall thickness of a valve pressure-bearing part → overall design of a valve scheme → design review → selection of a qualified supplier according to the technical requirements and technical conditions of design → purchase of raw materials required for product production → detection and acceptance according to standards and technical requirements → organization and production according to design patterns → assembly → detection and test of various performances of a valve prototype according to the technical requirements and design → delivery to a national approved authority department → after detection is qualified, the process and production department makes a suitable mass production process → organization of mass production.
2. The process route is as follows:
outside cooperation casting blank → inspection → rough machining → fine machining → valve seat installation → fine turning of sealing surface → colored flaw detection of sealing surface → drilling → grinding of sealing surface.
Claims (1)
1. The utility model provides a nuclear power island heart is with bellows direction formula stop check valve, includes valve body, disk seat, valve gap, valve clack lid, valve rod, well first gasket, packs, packing pad, clamp plate, presses cover, gear head, deflector, bellows, valve clack guide ring, plug screw and opens and close position indicator, its characterized in that: the valve body is provided with a low-groove cavity and a high-groove cavity, the inlet of the valve body is on the low-groove side, the inlet and the outlet of the valve body are on the high-groove side, a valve seat is arranged between the low-groove cavity and the high-groove cavity, a valve clack is arranged on the valve seat, the valve clack stops the liquid flow between the low-groove cavity and the high-groove cavity, a valve clack cover is arranged on the valve clack, a corrugated pipe is arranged outside the valve rod and connected with the valve clack cover to form a cavity, the valve rod moves up and down in the cavity and along the cavity, and the corrugated pipe; a valve clack guide ring is arranged below the valve seat, and a guide rod is arranged below the valve clack; the corrugated pipe enables the valve clack to ascend through the valve rod;
the inlet and the outlet of the valve body are connected with a pipeline in a welding mode;
a sewage draining hole is formed in the bottom of the valve body;
the valve rod is lifted by rotating the nut, the valve rod is driven by small-pitch threads, and a closed position indicator is arranged at the upper end of the valve rod;
and the sealing surface between the valve seat and the valve clack is made of STL hard alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810545787.8A CN108561563B (en) | 2018-05-31 | 2018-05-31 | Corrugated pipe guide type stop check valve for nuclear power island core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810545787.8A CN108561563B (en) | 2018-05-31 | 2018-05-31 | Corrugated pipe guide type stop check valve for nuclear power island core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108561563A CN108561563A (en) | 2018-09-21 |
| CN108561563B true CN108561563B (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810545787.8A Active CN108561563B (en) | 2018-05-31 | 2018-05-31 | Corrugated pipe guide type stop check valve for nuclear power island core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108561563B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202252179U (en) * | 2011-10-14 | 2012-05-30 | 南通市电站阀门有限公司 | Stop check valve for high-pressure bellows |
| CN203146835U (en) * | 2013-03-15 | 2013-08-21 | 胡相兰 | Corrugated pipe sealing stop valve with handwheel |
| CN203348565U (en) * | 2013-07-15 | 2013-12-18 | 南通国电电站阀门有限公司 | Angle high-pressure double-acting valve |
| CN105508720A (en) * | 2016-01-14 | 2016-04-20 | 北京市阀门总厂股份有限公司 | Corrugated pipe stop valve for photo-thermal electricity generation fused salt |
| CN107314116A (en) * | 2017-06-23 | 2017-11-03 | 南通国电电站阀门股份有限公司 | A kind of overcritical pneumatic cut-off throttle valve of heavy caliber pressure-releasing type |
| CN208311476U (en) * | 2018-05-31 | 2019-01-01 | 南通国电电站阀门股份有限公司 | Nuclear power island heart bellows guide type screw down nonreturn valve |
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2018
- 2018-05-31 CN CN201810545787.8A patent/CN108561563B/en active Active
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| Publication number | Publication date |
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| CN108561563A (en) | 2018-09-21 |
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Effective date of registration: 20210222 Address after: 226500 No.1 Guodian Road, Chengnan street, Rugao City, Nantong City, Jiangsu Province Patentee after: Nantong Guodian Valve Technology Co.,Ltd. Address before: 226500 Taoyuan West Road 1, Chengnan street, Rugao City, Nantong, Jiangsu Patentee before: NANTONG STATE ELECTRIC POWER VALVE Co.,Ltd. |