CN208764389U - A kind of extraction check valve - Google Patents
A kind of extraction check valve Download PDFInfo
- Publication number
- CN208764389U CN208764389U CN201821519390.3U CN201821519390U CN208764389U CN 208764389 U CN208764389 U CN 208764389U CN 201821519390 U CN201821519390 U CN 201821519390U CN 208764389 U CN208764389 U CN 208764389U
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- CN
- China
- Prior art keywords
- magnet
- valve
- sealing
- fixedly connected
- connecting plate
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of extraction check valves, including valve, the inner ring of valve is welded with connecting plate, the outer surface of connecting plate offers circular hole, the inner ring of circular hole is connected with sealing-plug, the side of sealing-plug is bonded with sealing plate, the top of sealing plate is hinged with articulation piece, the side of articulation piece and the outer surface of connecting plate are welded, the side of sealing plate, which is fixedly connected with, pushes back spring, the one end for pushing back spring is fixedly connected with the inner wall of valve, the bottom end of sealing plate is welded with link block, the side of link block is fixedly connected with the first magnet, the other side of connecting plate outer surface is fixedly connected with the second magnet, and first magnet and the second magnet be anisotropic setting.By setting sealing-plug, sealing plate, articulation piece, push back spring, the first magnet and the second magnet, in the case where pushing back the magnetic fields of spring the first magnet of cooperation and the second magnet, and then substantially increase valve and return the speed closed, make security performance when using which raises valve.
Description
Technical field
The utility model relates to valve technology field more particularly to a kind of extraction check valves.
Background technique
In thermal power plant, steam turbine generator is the heart of power plant.Exhaust check valve is the mating production of Turbo-generator Set
Product.It is the dedicated quick closing valve valve for protecting Turbo-generator Set, effect is to prevent Steam Turbine steam turbine in unexpected removal of load
Internal pressure reduces suddenly, and steam, which blows back into steam turbine, in extraction steam pipe and various hot devices causes to turn high speed rotation more than per minute 3000
Turbine blade unexpected reverse-starting braking operation operating, and cause to smash turbine blade, damage the serious accident of steam turbine generator, and
Prevent heater system pipe leakage from water being made to enter in steam turbine from bleed steam pipework and water hammer accident occurs.
But existing extraction check valve, when closing, time pass speed is slower, causes to be easy there is security risk
Contingency occurs, so making improvements in response to this problem.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of extraction check valve, solves non-return valve and returns pass speed
Degree leads to the presence of security risk slowly.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of extraction check valve, including valve, the inner ring of the valve are welded with connecting plate, the outer surface of the connecting plate
Offer circular hole, the inner ring of the circular hole is connected with sealing-plug, the side of the sealing-plug extend to the outer surface of connecting plate and
It is bonded with sealing plate, the top of the sealing plate is hinged with articulation piece, and the side of the articulation piece and the outer surface of connecting plate are welded
It connecing, the side of the sealing plate, which is fixedly connected with, pushes back spring, and described one end for pushing back spring is fixedly connected with the inner wall of valve,
The bottom end of the sealing plate is welded with link block, and the side of the link block is fixedly connected with the first magnet, outside the connecting plate
The other side on surface is fixedly connected with the second magnet, and the first magnet and the second magnet are anisotropic setting, and the first magnet and the
Bar is provided between two magnet.
Preferably, one end of the valve is fixedly connected with air inlet pipe, and the other end of the valve is fixedly connected with outlet
Pipe.
Preferably, the side of the air inlet pipe and an air outlet pipe opens up grooved hole, is fixedly connected at the top of the valve
Connecting pipe.
Preferably, it is welded with disk at the top of the connecting pipe, is provided with top cover at the top of the disk.
Preferably, it is provided with equally distributed screw at the top of the top cover, and passes through screw spiral shell between disk and top cover
Line connection.
Preferably, the side of second magnet offers circular groove, and one end of the bar passes through circular groove and and connecting plate
Outer surface welding, the other end of the bar is in contact with the first magnet.
Compared with prior art, the utility model has the beneficial effects that
1, by the way that sealing-plug is arranged, sealing plate, articulation piece, pushes back spring, the first magnet and the second magnet, thus being evacuated
When completion, in the case where pushing back the magnetic fields of spring the first magnet of cooperation and the second magnet, sealing-plug is rapidly performed by
Rebound, seals up it by circular hole, and then substantially increases valve and return the speed closed, and makes safety when using which raises valve
Performance reduces security risk.
2, by setting bar to play the role of stop limit, make which prevent sealing plate around articulation piece to the left
The case where rotating, and then preventing gas backstreaming generation, further reduces the generation of fortuitous event.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model valve cross-sectional view；
Fig. 3 is the second magnet of the utility model main view.
In figure: 1 valve, 101 air inlet pipe, 102 escape pipes, 103 slots, 104 connecting pipes, 105 disks, 106 top covers,
107 screws, 2 connecting plates, 3 circular holes, 4 sealing-plugs, 5 sealing plates, 6 articulation pieces, 7 push back spring, 8 link blocks, 9 first magnet, 10
Second magnet, 11 bars, 12 circular grooves.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig.1-3, a kind of extraction check valve, including valve 1, one end of valve 1 are fixedly connected with air inlet pipe 101, valve
The other end of door 1 is fixedly connected with escape pipe 102, and the side of air inlet pipe 101 and escape pipe 102 opens up grooved hole 103, valve
The top of door 1 is fixedly connected with connecting pipe 104, and the top of connecting pipe 104 is welded with disk 105, and the top of disk 105 is set
It is equipped with top cover 106, the top of top cover 106 is provided with equally distributed screw 107, and passes through spiral shell between disk 105 and top cover 106
Nail 107 is threadedly coupled, and the inner ring of valve 1 is welded with connecting plate 2, and the outer surface of connecting plate 2 offers circular hole 3, the inner ring of circular hole 3
It is connected with sealing-plug 4, by setting sealing-plug 4, sealing plate 5, articulation piece 6, pushes back spring 7, the first magnet 9 and the second magnet
10, thus when being evacuated completion, in the case where pushing back the magnetic fields of the first magnet 9 of cooperation of spring 7 and the second magnet 10, so that sealing
Plug 4 can be rapidly performed by rebound, seal up it by circular hole 3, the side of sealing-plug 4 extend to the outer surface of connecting plate 2 and
It is bonded with sealing plate 5, the top of sealing plate 5 is hinged with articulation piece 6, and the side of articulation piece 6 and the outer surface of connecting plate 2 are welded,
The side of sealing plate 5, which is fixedly connected with, pushes back spring 7, and the one end for pushing back spring 7 is fixedly connected with the inner wall of valve 1, sealing plate 5
Bottom end be welded with link block 8, the side of link block 8 is fixedly connected with the first magnet 9, and the other side of 2 outer surface of connecting plate is solid
Surely it is connected with the second magnet 10, and the first magnet 9 and the second magnet 10 are anisotropic setting, when pumping blows close on sealing-plug 4
Sealing plate 5 is rotated to the right around articulation piece 6, is pushed back spring 7 to squeeze, is pushed back the elasticity of spring 7 again after the completion of pumping
Under effect, so that sealing plate 5 carries out reset rotation, while the second magnet 10 adsorbs the first magnet 9 and generates suction, and then at two
Sealing-plug 4 is allowed quickly again with 3 clamping of circular hole, and then to substantially increase valve 1 and go back to pass under the mating reaction of power
Speed makes security performance when using which raises valve 1, reduces security risk, and the first magnet 9 and the second magnet 10 it
Between be provided with bar 11, by setting bar 11 to play the role of stop limit, make which prevent sealing plate 5 around hinge
Fitting 6 turns left, and then generation the case where prevent gas backstreaming, further reduces the generation of fortuitous event, and second
The side of magnet 10 offers circular groove 12, and one end of bar 11 passes through circular groove 12 and welds with the outer surface of connecting plate 2, bar
11 other end is in contact with the first magnet 9.
Working principle: the sealing plate 5 blown on sealing-plug 4 when pumping is rotated to the right around articulation piece 6, to squeeze
Spring 7 is pushed back, is pushed back under the elastic reaction of spring 7 again after the completion of pumping, so that sealing plate 5 carries out reset rotation, while the
Two magnet 10 adsorb the first magnet 9 and generate suction, and then under the mating reaction of two power sealing-plug 4 are quickly weighed
Newly with 3 clamping of circular hole.
In conclusion the extraction check valve, by setting sealing-plug 4, sealing plate 5, articulation piece 6, pushes back spring 7, first
Magnet 9 and the second magnet 10, thus when being evacuated completion, in the magnetic field for pushing back spring 7 cooperation the first magnet 9 and the second magnet 10
Under effect, sealing-plug 4 is allowed to be rapidly performed by rebound, seal up it by circular hole 3, and then substantially increased valve 1 and return
The speed of pass makes security performance when using which raises valve 1, reduces security risk, is risen by setting bar 11
The effect for stopping limit has been arrived, has made which prevent sealing plates 5 to turn left around articulation piece 6, and then prevent gas backstreaming
It happens, further reduces the generation of fortuitous event, solve non-return valve and return and close speed and lead to that there are security risks slowly
The problem of.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of extraction check valve, including valve (1), which is characterized in that the inner ring of the valve (1) is welded with connecting plate (2),
The outer surface of the connecting plate (2) offers circular hole (3), and the inner ring of the circular hole (3) is connected with sealing-plug (4), the sealing
The side of plug (4) extends to the outer surface of connecting plate (2) and is bonded with sealing plate (5), and the top of the sealing plate (5) is hinged with
Articulation piece (6), the side of the articulation piece (6) and the outer surface of connecting plate (2) are welded, and the side of the sealing plate (5) is fixed
It is connected with and pushes back spring (7), described one end for pushing back spring (7) is fixedly connected with the inner wall of valve (1), the sealing plate (5)
Bottom end be welded with link block (8), the side of the link block (8) is fixedly connected with the first magnet (9), the connecting plate (2)
The other side of outer surface is fixedly connected with the second magnet (10), and the first magnet (9) and the second magnet (10) they are anisotropic setting, and
Bar (11) are provided between first magnet (9) and the second magnet (10).
2. a kind of extraction check valve according to claim 1, which is characterized in that one end of the valve (1) is fixedly connected
Have air inlet pipe (101), the other end of the valve (1) is fixedly connected with escape pipe (102).
3. a kind of extraction check valve according to claim 2, which is characterized in that the air inlet pipe (101) and escape pipe
(102) side opens up grooved hole (103), is fixedly connected with connecting pipe (104) at the top of the valve (1).
4. a kind of extraction check valve according to claim 3, which is characterized in that weld at the top of the connecting pipe (104)
It is connected to disk (105), is provided with top cover (106) at the top of the disk (105).
5. a kind of extraction check valve according to claim 4, which is characterized in that be provided at the top of the top cover (106)
Equally distributed screw (107), and be threadedly coupled between disk (105) and top cover (106) by screw (107).
6. a kind of extraction check valve according to claim 1, which is characterized in that the side of second magnet (10) opens up
Have circular groove (12), one end of the bar (11) passes through circular groove (12) and welds with the outer surface of connecting plate (2), the bar
(11) the other end is in contact with the first magnet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821519390.3U CN208764389U (en) | 2018-09-17 | 2018-09-17 | A kind of extraction check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821519390.3U CN208764389U (en) | 2018-09-17 | 2018-09-17 | A kind of extraction check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208764389U true CN208764389U (en) | 2019-04-19 |
Family
ID=66135914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821519390.3U Expired - Fee Related CN208764389U (en) | 2018-09-17 | 2018-09-17 | A kind of extraction check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208764389U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792835A (en) * | 2019-12-02 | 2020-02-14 | 大唐郓城发电有限公司 | Device beneficial to driving pipeline valve to rotate |
| CN111824016A (en) * | 2020-06-24 | 2020-10-27 | 江永县元杰科技有限公司 | Automobile light alarm device |
-
2018
- 2018-09-17 CN CN201821519390.3U patent/CN208764389U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792835A (en) * | 2019-12-02 | 2020-02-14 | 大唐郓城发电有限公司 | Device beneficial to driving pipeline valve to rotate |
| CN110792835B (en) * | 2019-12-02 | 2024-06-07 | 大唐郓城发电有限公司 | Device for driving pipeline valve to rotate |
| CN111824016A (en) * | 2020-06-24 | 2020-10-27 | 江永县元杰科技有限公司 | Automobile light alarm device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190419 Termination date: 20210917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |