CN208311476U - Nuclear power island heart bellows guide type screw down nonreturn valve - Google Patents
Nuclear power island heart bellows guide type screw down nonreturn valve Download PDFInfo
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- CN208311476U CN208311476U CN201820830617.XU CN201820830617U CN208311476U CN 208311476 U CN208311476 U CN 208311476U CN 201820830617 U CN201820830617 U CN 201820830617U CN 208311476 U CN208311476 U CN 208311476U
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Abstract
The utility model discloses a kind of nuclear power island heart of high-temperature pipe apparatus field bellows guide type screw down nonreturn valves, including valve body, valve seat, valve deck, flap, valve clack cover, valve rod, middle head gasket, filler, Packing seat, pressing plate, pressing sleeve, gearhead, guide plate, bellows, flap guide ring, plug screw and opening and closing position indicator, the both ends of the valve body are the inlet and outlet of valve body, valve body is equipped with low groove cavity and high groove cavity, the import of valve body is low groove side, the inlet and outlet of valve body are high groove side, valve seat is equipped between low groove cavity and high groove cavity, valve seat has flap guide ring, valve seat is equipped with valve deck, valve deck ends the flowing of the liquid between low groove cavity and high groove cavity, valve deck is equipped with valve clack cover, valve deck has guide rod, valve clack cover is connect with bellows, valve rod is located at valve clack cover and bellows Cavity in, valve rod is moved up and down along cavity, and bellows is elastic tube body, and bellows rises flap by valve clack cover.
Description
Technical field
The utility model relates to a kind of nuclear power island heart of high-temperature pipe apparatus field bellows guide type screw down nonreturn valves.
Background technique
The function of traditional shut-off valve is off or connects the medium in pipeline；The function of check-valves is that control medium is flow backwards.
The screw down nonreturn valve used domestic at present all there is manufacture require it is high, be easy leakage, service life is short the disadvantages of.Bellows is led
To formula screw down nonreturn valve have reasonable sealing structure and corrosion resistance, long service life, maintenance frequency is few, reduce manage at
This.Robust sylphon seal design, guarantees the zero leakage of valve rod, provides the condition of Maintenance free.Valve opening and closing torque
It is small, reduce labor intensity.The external seal of valve is sealed using sylphon seal and graphite, stainless steel gasket, sealed reliable, for a long time
Using can not have to replace airtight and watertight padding.It is upper stringent using foreign advanced standard designing and manufacturing.Bellows guide type stops
Valve is returned, multi-purpose valve, frequency of use is higher, and valve sealing face is prone to wear, it is necessary to detachable valve seat is designed, it is easy to maintenance.It adopts
With STL cemented carbide material, valve sealing face wearability is improved.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide one kind be sealed, be corrosion-resistant, long service life
With the nuclear power island heart bellows guide type screw down nonreturn valve for reducing operating cost.
The utility model is achieved through the following technical solutions:
A kind of nuclear power island heart bellows guide type screw down nonreturn valve, including valve body, valve seat, valve deck, flap, valve clack cover,
It valve rod, middle head gasket, filler, Packing seat, pressing plate, pressing sleeve, gearhead, guide plate, bellows, flap guide ring, plug screw and opens
Closed position indicator, it is characterised in that: the both ends of the valve body are the inlet and outlet of valve body, and valve body is equipped with low groove cavity and height
Groove cavity, the import of valve body are low groove side, and the inlet and outlet of valve body are high groove side, between low groove cavity and high groove cavity
Flap guide ring is had equipped with valve seat, valve seat, valve seat is equipped with flap, and flap ends between low groove cavity and high groove cavity
Liquid flowing, flap is equipped with valve clack cover, and flap has guide rod, and valve rod is located in the cavity of valve clack cover and bellows,
Valve rod is moved up and down along cavity, and bellows is elastic tube body, and bellows rises flap by valve rod.Former valve clack cover plays valve rod
Guiding role, bellows guide type screw down nonreturn valve, multi-purpose valve, frequency of use are higher；Above-mentioned technical proposal is made further
Explanation: the described valve body inlet and outlet both ends welded type is connect with pipeline；Above-mentioned technical proposal is further described: described
Body base be equipped with mudhole, facilitate removal dirt；Above-mentioned technical proposal is further described: being that the valve rod is logical
Rotating nuts promotion is crossed, valve rod uses fine pitch screw-driven, it can be achieved that trace regulation to flow, valve rod upper end are equipped with and close position
Set indicator, the stroke of control valve opening and closing；Above-mentioned technical proposal is further described: close between the valve seat and flap
Cover uses STL cemented carbide material, improves valve sealing face wearability.
The utility model has the characteristics that be sealed, corrosion-resistant and long service life.
Detailed description of the invention
Fig. 1 is nuclear power island heart bellows guide type screw down nonreturn valve structural schematic diagram.
In figure: valve body 1, valve seat 2, valve deck 3, valve clack cover 4, valve rod 5, body cap 6, filler 7, Packing seat 8, pressing plate 9, pressing sleeve
10, guide plate 11, gearhead 12, nut 13, bellows 14, flap guide ring 15, plug screw 16, mudhole 17, middle head gasket 18
With opening and closing position indicator 19.
Specific embodiment
The content of the utility model is further described with reference to the accompanying drawing:
As shown be nuclear power island heart bellows guide type screw down nonreturn valve structural schematic diagram, including valve body 1, valve seat 2,
Valve deck 3, valve clack cover 4, valve rod 5, body cap 6, filler 7, Packing seat 8, pressing plate 9, pressing sleeve 10, guide plate 11, gearhead 12, nut
13, bellows 14, flap guide ring 15, plug screw 16, mudhole 17, middle head gasket 18 and opening and closing position indicator 19.
The purpose of this utility model is valve using bellows guide type structure, and valve seat is detachable, easy to maintenance.Solve one
The multi-purpose structure of valve, meets applying working condition, designs a kind of nuclear power island heart bellows guide type for meeting applying working condition and stops
Return valve.
Design scheme
(1) technical requirements and technical conditions that user investigates → identifies project → design calculate, and determine valve pressure part
The technical parameters such as wall thickness → design valve.
(2) product structure: nuclear power island heart bellows guide type screw down nonreturn valve.
(3) it forms: valve body, valve seat, valve deck, flap, valve clack cover, valve rod, middle head gasket, filler, Packing seat, pressing plate, pressure
The compositions such as set, gearhead, guide plate, bellows, flap guide ring, plug screw, opening and closing position indicator.
(4) connection type: inlet and outlet both ends welded type.
Improvement project
(1) effect of former valve clack cover is the connection of valve rod and flap, is now changed to connect with flap, plays guiding to valve rod and makees
With.
(2) former valve seat welds on the body, bad disassembly.It is now changed to detachable valve seat, it is easy to maintenance.
(3) valve is off when medium enters from low groove；It is check-valves, multi-purpose valve way when medium enters from high groove.
(4) increase a mudhole, remove dirt；Increase an opening and closing position indicator, the stroke of control valve opening and closing.
(5) valve rod uses fine pitch screw-driven, it can be achieved that trace regulation to flow.
(6) former shut-off valve valve rod rotary valve rod nut does not rotate.It is now changed to without spin, valve rod does not rotate, valve stem nut rotation
Turn, moves along a straight line up and down.
Implementation method
1. technical requirements and technical conditions that user investigates → identifies project → design calculate, the wall of valve pressure part is determined
The technical parameters such as thickness → valving scheme master-plan → design review → selected according to the technical requirements and technical conditions of design
The raw material → checking and accepting by standard and technical requirements detection → that qualified supplier → product purchasing production needs press detail of design group
It knits production → assembly → properties detection and test are carried out to valve model machine by standard and the technical requirements of design → and send country
The authoritative department of approval detect → detect qualification after, technique, production division formulate technique → tissue suitable for mass production
Batch production.
2. process route:
External coordination cast blank → inspection → roughing → finishing → dress valve seat → smart car sealing surface → sealing face colouring is visited
Wound → drilling → grinding seal surface.
Claims (5)
1. a kind of nuclear power island heart bellows guide type screw down nonreturn valve, including valve body, valve seat, valve deck, flap, valve clack cover, valve
Bar, middle head gasket, filler, Packing seat, pressing plate, pressing sleeve, gearhead, guide plate, bellows, flap guide ring, plug screw and opening and closing
Position indicator, it is characterised in that: the both ends of the valve body are the inlet and outlet of valve body, and valve body is equipped with low groove cavity and Gao Po
Mouth cavity, the import of valve body are low groove side, and the inlet and outlet of valve body are high groove side, are set between low groove cavity and high groove cavity
There are valve seat, valve seat to have flap guide ring, valve seat is equipped with flap, and flap ends between low groove cavity and high groove cavity
Liquid flowing, flap are equipped with valve clack cover, and flap has guide rod, and valve rod is located in the cavity of valve clack cover and bellows, valve
Bar is moved up and down along cavity, and bellows is elastic tube body, and bellows rises flap by valve rod.
2. nuclear power island according to claim 1 heart bellows guide type screw down nonreturn valve, it is characterised in that: the valve
Body inlet and outlet both ends welded type is connect with pipeline.
3. nuclear power island according to claim 1 heart bellows guide type screw down nonreturn valve, it is characterised in that: the valve
Body bottom is equipped with mudhole.
4. nuclear power island according to claim 1 heart bellows guide type screw down nonreturn valve, it is characterised in that: be described
Valve rod is promoted by rotating nuts, and valve rod uses fine pitch screw-driven, and valve rod upper end is equipped with closed position indicator.
5. nuclear power island according to claim 1 heart bellows guide type screw down nonreturn valve, it is characterised in that: the valve seat
Sealing surface between flap uses STL cemented carbide material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820830617.XU CN208311476U (en) | 2018-05-31 | 2018-05-31 | Nuclear power island heart bellows guide type screw down nonreturn valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820830617.XU CN208311476U (en) | 2018-05-31 | 2018-05-31 | Nuclear power island heart bellows guide type screw down nonreturn valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208311476U true CN208311476U (en) | 2019-01-01 |
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ID=64715798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820830617.XU Active CN208311476U (en) | 2018-05-31 | 2018-05-31 | Nuclear power island heart bellows guide type screw down nonreturn valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN208311476U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561563A (en) * | 2018-05-31 | 2018-09-21 | 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 |
-
2018
- 2018-05-31 CN CN201820830617.XU patent/CN208311476U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561563A (en) * | 2018-05-31 | 2018-09-21 | 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210302 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. |