CN207229876U - A kind of solenoid valve for extra-supercritical unit main steam system - Google Patents
A kind of solenoid valve for extra-supercritical unit main steam system Download PDFInfo
- Publication number
- CN207229876U CN207229876U CN201721192567.9U CN201721192567U CN207229876U CN 207229876 U CN207229876 U CN 207229876U CN 201721192567 U CN201721192567 U CN 201721192567U CN 207229876 U CN207229876 U CN 207229876U
- Authority
- CN
- China
- Prior art keywords
- valve
- coil
- casing
- head
- permanent magnet
- 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.)
- Active
Links
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a kind of solenoid valve for extra-supercritical unit main steam system, including valve casing, valve seat, valve head, permanent magnet, valve rod and coil, the valve casing is straight tube shape, valve seat is fixedly installed in valve casing, bellmouth is provided with the valve seat, the valve head of activity is provided with the bellmouth, the valve head is connected with valve rod, the other end of the valve rod is provided with permanent magnet, is embedded with coil in the valve casing, the position of coil is corresponding with the position of permanent magnet.After coil is powered, the magnetic field of generation, can give the power of one axial direction of permanent magnet, so as to drive valve head to move by valve rod, achieve the purpose that to be turned on and off valve.The valve casing is non-metallic material, and coil is embedded into valve casing, and coil can't steam contact in valve chamber, it is possible to reduce abrasion, opposite contact control, can save the sealing part of control element and valve casing, so as to simplify structure, improve stability and durability.
Description
Technical field
It the utility model is related to a kind of valve, specifically a kind of electromagnetism for extra-supercritical unit main steam system
Valve.
Background technology
The critical parameters of water are：Tc=374.15 DEG C, Pc=22.129MPa., will in critical point and supercriticality
Invisible Evaporation Phenomenon, water are directly changed steam state in the case where keeping single-phase from liquid.Pressure is generally more than critical point Pc
Scope be known as supercritical region, scope of the pressure less than Pc is known as close-to-critical range.Generally when steam pressure brings up to 25MPa,
It is known as ultra supercritical.
With the rapid growth in recent year power station market, the requirement for efficiency of plant and environment protection emission is more and more tighter
Lattice, ultra supercritical have been the preferred steam inlet conditions of domestic more than 600MW steam turbines, and China has put into operation nearly hundred 600 DEG C at present
The extra-supercritical unit of grade.In order to further improve unit efficiency, a new generation that research steam parameter is up to 700 DEG C is high
Parameter extra-supercritical unit will be one of developing direction of following coal-fired power generator set.
The existing valve for extra-supercritical unit main steam system, the control of generally use valve rod, valve rod pass through valve casing,
So the problem of must take into consideration valve rod and penalizing the sealing between shell, and due to being flexibly connected between valve rod and valve casing, and in valve chamber
For high temperature and high pressure steam, so the sealing between valve rod and valve casing is extremely difficult, the abrasion during use, can directly influence
Leakproofness.So that valve easily breaks down.
Utility model content
The purpose of this utility model is to provide a kind of solenoid valve for extra-supercritical unit main steam system, solves existing
The problem of sealing in technology between valve rod and valve casing is difficult.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of solenoid valve for extra-supercritical unit main steam system, including valve casing, valve seat, valve head, permanent magnet, valve rod
And coil, the valve casing are straight tube shape, and valve seat is fixedly installed in valve casing, bellmouth, the cone are provided with the valve seat
The valve head of activity is provided with shape hole, the valve head is connected with valve rod, and the other end of the valve rod is provided with permanent magnet, described
Valve casing is embedded with coil, and the position of coil is corresponding with the position of permanent magnet.After coil is powered, the magnetic field of generation, can give forever
The power of one axial direction of magnet, so as to drive valve head to move by valve rod, achievees the purpose that to be turned on and off valve.The valve casing is
Non-metallic material, the coil are embedded into valve casing, coil can't steam contact in valve chamber, belong to non-contact control.Can be with
Abrasion is reduced, is controlled with respect to contact, the sealing part of control element and valve casing can be saved, so as to simplify structure, is improved
Stability and durability.
In the prior art, for the ease of control, usually valve casing is designed L-shaped, valve casing is straight barrel type in the utility model,
Steam can be reduced and pass through the resistance formed during valve body, in addition connected for pipeline also more convenient.
The valve head is taper, is equipped with the bellmouth being adapted with valve head in the valve seat, the maximum radius of valve head is more than
The least radius of valve seat bellmouth.When i.e. valve head card such as arrives the bellmouth of valve seat, the conical surface of valve head and the hole wall of valve seat bellmouth
In sealing contact, the pressure positive correlation between sealing effect and valve head and valve seat can be by way of improving the two pressure, to carry
High sealing effect.
Flange is provided at both ends with the valve casing, is respectively used to connect with jet chimney, the mode of the opposite welding of flange
It is more flexible.
In order to improve its durability, the valve casing, valve seat, valve head, the material of valve rod are nickel-base alloy.
The beneficial effects of the utility model are：
The utility model can save the sealing part of control element and valve casing by contactless Electromagnetic Control, so that
Structure is simplified, improves stability and durability.Valve casing is straight tube shape, is provided at both ends with connecting flange, with respect to L-shaped valve, is fitted
It is wider with scope, using flexible, and steam can be reduced and pass through the resistance run into during valve body.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is sectional view along A-A in Fig. 1.
Fig. 3 is structure diagram when the utility model is used as normally opened valve.
In figure：1-valve casing；2-valve seat；3-valve head；4-permanent magnet；5-valve rod；6-coil；7-- flanges.
Embodiment
As illustrated in fig. 1 and 2, a kind of solenoid valve for extra-supercritical unit main steam system, including valve casing 1, valve seat 2,
Valve head 3, permanent magnet 4, valve rod 5 and coil 6, the valve casing 1 are straight tube shape, and valve seat 2, the valve are fixedly installed in valve casing 1
Bellmouth is provided with seat, the valve head 3 of activity is provided with the bellmouth, the valve head 3 is connected with valve rod 5, the valve rod 5
The other end be provided with permanent magnet 4, be embedded with coil 6 in the valve casing 1, the position of coil 6 is opposite with the position of permanent magnet 4
Should.
After coil 6 is powered, the magnetic field of generation can give the power of 4 one axial directions of permanent magnet, so as to drive valve by valve rod 5
Head movement, achievees the purpose that to be turned on and off valve.The valve casing 1 is non-metallic material, and the coil 6 is embedded into valve casing 1,
Coil 6 can't steam contact in valve chamber, belong to non-contact control.Abrasion can be reduced, controls, can save with respect to contact
The sealing part of control element and valve casing, so as to simplify structure, improves stability and durability.
In the prior art, for the ease of control, usually valve casing is designed L-shaped, valve casing 1 is straight tube in the utility model
Type, it is possible to reduce steam passes through the resistance formed during valve body, is in addition connected for pipeline also more convenient.
The valve head 3 is taper, and the bellmouth being adapted with valve head 3, the maximum radius of valve head 3 are equipped with the valve seat 2
More than the least radius of 2 bellmouth of valve seat.When i.e. the card of valve head 3 such as arrives the bellmouth of valve seat 2, the conical surface and the valve seat taper of valve head 3
The hole wall in hole is in sealing contact, the pressure positive correlation between sealing effect and valve head and valve seat, can be by improving the two pressure
Mode, to improve sealing effect.
Flange 7 is provided at both ends with the valve casing 1, is respectively used to connect with jet chimney, the side of the opposite welding of flange
Formula is more flexible.
In order to improve its durability, the valve casing 1, valve seat 2, valve head 3, the material of valve rod 5 are nickel-base alloy.
In Fig. 1, close to one end of valve head access air inlet, i.e., used as normal closed gate, under the effect of valve chamber pressure, meeting
The valve head 3 made is pressed in valve seat 2, and valve is closed, and at this time without external force, or is given less electric current and is allowed forever
Magnet is subject to a less power, you can and valve is closed, when needing Open valve, coil 6 is powered, permanent magnetism
Body stress, by valve rod 5, pulls out valve seat 2, valve is in opening by valve head 3.
As shown in figure 3, when air inlet is accessed in one end away from valve head, will be used as normally opened valve, in valve chamber pressure
Under the action of, valve is in opening, opening, without electric power or other external force, closing course and closure state
Need by electric power, after coil 6 is powered, permanent magnet stress, by valve rod 5, valve head 3 is pressed in valve seat 2, and valve, which is in, to close
Closed state.
Disclosed above is only specific implementation of the patent example, but this patent is not limited to this, for the general of this area
For logical technical staff, on the premise of the utility model principle is not departed from, the deformation made should be regarded as belonging to the utility model
Protection domain.
Claims (4)
1. a kind of solenoid valve for extra-supercritical unit main steam system, including valve casing (1), valve seat (2), valve head (3), it is special
Sign is：Permanent magnet (4), valve rod (5) and coil (6) are further included, the valve casing (1) is straight tube shape, fixed in valve casing (1) to set
Valve seat (2) is equipped with, bellmouth is provided with the valve seat, the valve head (3) of activity, the valve head are provided with the bellmouth
(3) valve rod (5) is connected with, the other end of the valve rod (5) is provided with permanent magnet (4), and coil is embedded with the valve casing (1)
(6), the position of coil (6) is corresponding with the position of permanent magnet (4).
A kind of 2. solenoid valve for extra-supercritical unit main steam system according to claim 1, it is characterised in that：Institute
It is taper to state valve head (3), and the bellmouth being adapted with valve head (3) is equipped with the valve seat (2), and the maximum radius of valve head (3) is big
In the least radius of valve seat (2) bellmouth.
A kind of 3. solenoid valve for extra-supercritical unit main steam system according to claim 1, it is characterised in that：Institute
That states valve casing (1) is provided at both ends with flange (7).
4. a kind of solenoid valve for extra-supercritical unit main steam system according to claim 1 or 2, its feature exist
In：The valve casing (1), valve seat (2), valve head (3), the material of valve rod (5) are nickel-base alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721192567.9U CN207229876U (en) | 2017-09-18 | 2017-09-18 | A kind of solenoid valve for extra-supercritical unit main steam system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721192567.9U CN207229876U (en) | 2017-09-18 | 2017-09-18 | A kind of solenoid valve for extra-supercritical unit main steam system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207229876U true CN207229876U (en) | 2018-04-13 |
Family
ID=61862522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721192567.9U Active CN207229876U (en) | 2017-09-18 | 2017-09-18 | A kind of solenoid valve for extra-supercritical unit main steam system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207229876U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017396A (en) * | 2019-05-22 | 2019-07-16 | 杭州沃凌的机电有限公司 | A kind of magnet fluid sealing valve |
| CN110094523A (en) * | 2019-05-22 | 2019-08-06 | 杭州沃凌的机电有限公司 | A kind of magnetic fluid valve |
-
2017
- 2017-09-18 CN CN201721192567.9U patent/CN207229876U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017396A (en) * | 2019-05-22 | 2019-07-16 | 杭州沃凌的机电有限公司 | A kind of magnet fluid sealing valve |
| CN110094523A (en) * | 2019-05-22 | 2019-08-06 | 杭州沃凌的机电有限公司 | A kind of magnetic fluid valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207229880U (en) | Solenoid valve for extra-supercritical unit | |
| CN207229876U (en) | A kind of solenoid valve for extra-supercritical unit main steam system | |
| CN204493843U (en) | A kind of normally open solenoid valve of piston structure | |
| CN104763839A (en) | Slowly-closed pilot type electromagnetic valve | |
| CN204573277U (en) | Slow pass pilot-type solenoid valve | |
| CN106969175A (en) | A kind of direct acting guide electromagnetic valve | |
| CN206299871U (en) | Disconnecting link formula HTHP zero leakage magnetic valve | |
| CN204114184U (en) | A kind of bellows selfsealings Magnetic Cooperate Globe Valves | |
| CN205173535U (en) | Electromagnetic drive's sealing gate valve | |
| CN208011035U (en) | Ball-cock assembly and its pipeline detecting system | |
| CN202691258U (en) | Electromagnetic valve | |
| CN207229800U (en) | For extra-supercritical unit high-temperature high pressure valve | |
| CN108980384A (en) | A kind of closed type water-saving valve | |
| CN104696575B (en) | Cryogenic pipe magnetic valve | |
| CN207598945U (en) | A kind of solenoid valve that valve dynamic sealing is made to be in outlet chamber | |
| CN208252789U (en) | One kind is to folder butterfly valve | |
| CN208397402U (en) | A kind of electromagnetic valve | |
| CN207634725U (en) | A kind of anti-wear gate valve | |
| CN211475017U (en) | Large-opening-degree electromagnetic control valve of low-temperature boosting system | |
| CN104712826A (en) | Electromagnetic valve | |
| CN206246751U (en) | A kind of magnetic valve of integrated unidirectionally controlled function | |
| CN205956404U (en) | Stop valve | |
| CN2916300Y (en) | Automatic water cut-off valve | |
| CN204852439U (en) | Ball valve is fixed to forged steel formula | |
| CN218935454U (en) | Remote control pilot-operated stop valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |