CN215861826U - Floating self-sealing gate valve for nuclear power station - Google Patents
Floating self-sealing gate valve for nuclear power station Download PDFInfo
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- CN215861826U CN215861826U CN202121996790.5U CN202121996790U CN215861826U CN 215861826 U CN215861826 U CN 215861826U CN 202121996790 U CN202121996790 U CN 202121996790U CN 215861826 U CN215861826 U CN 215861826U
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Abstract
The utility model relates to a floating self-sealing gate valve for a nuclear power station, which comprises a valve body, a valve seat and a gate plate, wherein two grooves are arranged in the valve body, one of the two grooves is positioned at an inlet side, the other groove is positioned at an outlet side, a closed pressure cabin is formed between the valve body and the valve seat at the inlet side by the groove at the inlet side, namely the pressure cabin at the inlet side, and the other closed pressure cabin is formed between the valve body and the valve seat at the outlet side by the groove at the outlet side, namely the pressure cabin at the outlet side; the pressure bin is connected with the inlet, the medium enters from the inlet and is filled in the pressure bin, and the extrusion valve seat floats and is in sealing contact with the flashboard. Reasonable in design, think about ingeniously, establish inclosed pressure chamber between valve body and disk seat to utilize the medium to be full of the pressure chamber, extrude the disk seat, make disk seat and flashboard sealing contact, pressure is big, and its sealed effect is better, and need not additionally to increase the component, its spoilage greatly reduced, life has obtained great promotion.
Description
Technical Field
The utility model relates to a gate valve, in particular to a gas floating type self-sealing gate valve for a nuclear power station.
Background
The common gate valve has the working principle that the gate plate moves up and down to be matched with the left valve seat and the right valve seat to open and close the valve, so that the sealing between the gate plate and the left valve seat and the sealing between the gate plate and the right valve seat cannot be well guaranteed; there are two general solutions to solve the above problems, one is to design the gate plate to float, and the other is to design the valve seat to float, for both of them, the spring is generally used to drive the float, which is unstable, and the spring material and precision are very high, and we are generally customized.
Such as the patent: 201020114183.7 anti-lock flat gate valve, i.e. adopting spring structure.
Of course, the connection adopts a hinge structure, such as the following patents: 201320315329.8 expansion flat gate valve, the structure is complicated.
And above-mentioned two kinds of structures, for nuclear power station this kind, high temperature and high pressure environment no matter be spring, also hinge structure, its life all greatly reduced.
Disclosure of Invention
In order to solve the problems, the utility model provides a gas floating type self-sealing gate valve for a nuclear power station aiming at the high-temperature and high-pressure environment of the nuclear power station.
The technical scheme of the utility model is as follows:
a floating self-sealing gate valve for a nuclear power station comprises a valve body, valve seats and a gate plate, wherein an inlet and an outlet are respectively arranged at two ends of the valve body, the two valve seats are arranged in the valve body, one valve seat is positioned at the inlet side and connected with the inlet, the other valve seat is positioned at the outlet side and connected with the outlet, and the gate plate is arranged in the valve body and positioned between the two valve seats; the gate plate moves up and down, the valve is closed when the gate plate is positioned at the upper limit, the valve is opened when the gate plate is positioned at the lower limit, and the through holes in the gate plate are respectively connected with the two valve seats; the valve seat is connected with the valve body in a sliding fit manner, a gap for the valve seat to float is reserved between the inlet or the outlet and the flashboard, and the valve seat and the flashboard reciprocate at the inlet or the outlet, namely float; two grooves are arranged in the valve body, one of the two grooves is positioned at the inlet side, the other groove is positioned at the outlet side, a closed pressure cabin, namely a pressure cabin at the inlet side, is formed between the valve body and the valve seat at the inlet side by the groove at the inlet side, and the other closed pressure cabin, namely a pressure cabin at the outlet side, is formed between the valve body and the valve seat at the outlet side by the groove at the outlet side; the pressure bin is connected with the inlet, the medium enters from the inlet and is filled in the pressure bin, and the extrusion valve seat floats and is in sealing contact with the flashboard.
The pressure chamber at the inlet side is connected with the inlet, and the pressure chamber at the outlet side is connected with the pressure chamber at the inlet side through a pipe arranged at the position of the valve body or a hole groove arranged in the valve body.
A slide way is arranged in the valve body, and the valve seat is arranged in the slide way and floats in the slide way.
The groove is a ring groove.
The slide on which the inlet-side valve seat floats constitutes the inlet-side groove.
The gate valve also comprises a valve rod, the valve rod is vertically arranged on the valve body, the upper end of the valve rod extends out of the valve body and is connected with the driving structure, the lower end of the valve rod extends into the valve body and is connected with the gate plate, and the driving structure drives the valve rod to move up and down to drive the gate plate to move up and down; the driving structure comprises a hand wheel, a nut is arranged between the valve rod and the valve body, the nut is fixedly connected to the valve body and sleeved on the valve rod to be in threaded connection with the valve rod, and the hand wheel is installed at the upper end of the valve rod.
The gate valve also comprises a guide rod, the guide rod is vertically arranged in the valve body, and the upper end of the guide rod is connected with the gate plate and moves up and down along with the gate plate; the valve body is connected with the guide rod in a sliding fit mode.
The medium is a gas.
The valve seat is characterized in that a plurality of annular sealing grooves are uniformly distributed on the peripheral surface of the valve seat, and sealing rings are arranged in the annular sealing grooves to seal the valve seat and the valve body.
The utility model has the advantages that the design is reasonable, the concept is ingenious, the closed pressure bin is constructed between the valve body and the valve seat, the pressure bin is filled with the medium to extrude the valve seat, the valve seat is in sealing contact with the flashboard, the pressure is high, the sealing effect is better, no additional component is needed, the damage rate is greatly reduced, and the service life is greatly prolonged.
Drawings
Fig. 1 is a schematic structural view (valve open) of a floating self-sealing gate valve for nuclear power plants.
Fig. 2 is a partially enlarged schematic view of fig. 1.
Fig. 3 is a schematic medium flow diagram.
In the figure, a valve body 1, an inlet 1-1, an outlet 1-2, a hole groove 1-3, a valve seat 2, a flashboard 3, a pressure chamber 4 at the inlet side, a pressure chamber 5 at the outlet side, a valve rod 6, a hand wheel 7, a nut 8, a guide rod 9 and a sealing ring 10 are arranged.
Detailed Description
As shown in fig. 1-3, the air floating type self-sealing gate valve for the nuclear power station comprises a valve body 1, a valve seat 2 and a gate plate 3, wherein an inlet 1-1 and an outlet 1-2 are respectively arranged at two ends of the valve body 1, the two valve seats 2 are arranged in the valve body 1, one of the two valve seats is positioned at the inlet side and connected with the inlet 1-1, the other valve seat is positioned at the outlet side and connected with the outlet 1-2, and the gate plate 3 is arranged in the valve body 1 and positioned between the two valve seats 2; the gate plate 3 moves up and down, the valve is closed when the gate plate 3 is positioned at the upper limit, the valve is opened when the gate plate 3 is positioned at the lower limit, and the through holes 3-1 on the gate plate 3 are respectively connected with the two valve seats 2; the valve seat 2 is connected with the valve body 1 in a sliding fit manner, a gap for floating the valve seat 2 is reserved between the inlet 1-1 or the outlet 1-2 and the gate plate 3, and the valve seat 2 reciprocates, namely floats, at the inlet 1-1 or the outlet 1-2 and the gate plate 3; two grooves are arranged in the valve body 1, one of the two grooves is positioned at an inlet side, the other groove is positioned at an outlet side, a closed pressure cabin, namely an inlet side pressure cabin 4, is formed between the valve body 1 and the valve seat 2 at the inlet side by the groove at the inlet side, and another closed pressure cabin, namely an outlet side pressure cabin 5, is formed between the valve body 1 and the valve seat 2 at the outlet side by the groove at the outlet side; the pressure bin 4 and the pressure bin 5 are connected with an inlet, a medium enters from the inlet and fills the pressure bin 4 and the pressure bin 5, and the extrusion valve seat 2 floats and is in sealing contact with the flashboard 3; the pressure chamber 4 at the inlet side is connected with the inlet 1-1, and the pressure chamber 5 at the outlet side is connected with the pressure chamber 5 at the inlet side through the hole groove 1-3 arranged in the valve body 1; a slide way is arranged in the valve body 1, and the valve seat 2 is arranged in the slide way and floats in the slide way; the groove is a ring groove; the slideway for floating the valve seat 2 at the inlet side forms a groove at the inlet side; the gate valve also comprises a valve rod 6, the valve rod 6 is vertically arranged on the valve body 1, the upper end of the valve rod 6 extends out of the valve body 1 and is connected with a driving structure, the lower end of the valve rod extends into the valve body 1 and is connected with the gate plate 3, and the driving structure drives the valve rod 6 to move up and down to drive the gate plate 3 to move up and down; the driving structure comprises a hand wheel 7, a nut 8 is arranged between the valve rod 6 and the valve body 1, the nut 8 is fixedly connected to the valve body 1 and sleeved on the valve rod 6 to be in threaded connection with the valve rod 6, and the hand wheel 7 is installed at the upper end of the valve rod 6; the gate valve further comprises a guide rod 9, the guide rod 9 is vertically arranged in the valve body 1, the upper end of the guide rod 9 is connected with the gate plate 3, and the guide rod moves up and down along with the gate plate 3; the valve body 1 is connected with the guide rod 9 in a sliding fit manner; the medium is a gas; the peripheral face of the valve seat 2 is uniformly distributed with a plurality of annular sealing grooves, and sealing rings 10 are arranged in the annular sealing grooves to seal the valve seat 2 and the valve body 1.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. A floating self-sealing gate valve for a nuclear power station comprises a valve body, valve seats and a gate plate, wherein an inlet and an outlet are respectively arranged at two ends of the valve body, the two valve seats are arranged in the valve body, one valve seat is positioned at the inlet side and connected with the inlet, the other valve seat is positioned at the outlet side and connected with the outlet, and the gate plate is arranged in the valve body and positioned between the two valve seats; the gate plate moves up and down, the valve is closed when the gate plate is positioned at the upper limit, the valve is opened when the gate plate is positioned at the lower limit, and the through holes in the gate plate are respectively connected with the two valve seats; the valve seat is connected with the valve body in a sliding fit manner, a gap for the valve seat to float is reserved between the inlet or the outlet and the flashboard, and the valve seat and the flashboard reciprocate at the inlet or the outlet, namely float; the pressure control valve is characterized in that two grooves are arranged in the valve body, one of the two grooves is positioned at an inlet side, the other one of the two grooves is positioned at an outlet side, a closed pressure cabin, namely a pressure cabin at the inlet side, is formed between the valve body and a valve seat at the inlet side by the groove at the inlet side, and the other closed pressure cabin, namely a pressure cabin at the outlet side, is formed between the valve body and the valve seat at the outlet side by the groove at the outlet side; the pressure bin is connected with the inlet, the medium enters from the inlet and is filled in the pressure bin, and the extrusion valve seat floats and is in sealing contact with the flashboard.
2. The floating self-sealing gate valve for nuclear power plant as claimed in claim 1, wherein the inlet side pressure chamber is connected to the inlet port, and the outlet side pressure chamber is connected to the inlet side pressure chamber through a pipe provided at a valve body portion or a hole groove built in the valve body.
3. The floating self-sealing gate valve for nuclear power plant as claimed in claim 1, wherein a slide way is provided in said valve body, and said valve seat is disposed in said slide way and floats in said slide way.
4. The floating self-sealing gate valve for nuclear power plant as claimed in claim 1, wherein said groove is a ring groove.
5. The floating self-sealing gate valve for nuclear power plant as claimed in claim 3, wherein the inlet side groove is formed by a slide rail for floating the inlet side valve seat.
6. The floating type self-sealing gate valve for the nuclear power station as claimed in claim 1, wherein the gate valve further comprises a valve rod, the valve rod is vertically installed on the valve body, the upper end of the valve rod extends out of the valve body and is connected with a driving structure, the lower end of the valve rod extends into the valve body and is connected with the gate plate, the driving structure drives the valve rod to move up and down to drive the gate plate to move up and down; the driving structure comprises a hand wheel, a nut is arranged between the valve rod and the valve body, the nut is fixedly connected to the valve body and sleeved on the valve rod to be in threaded connection with the valve rod, and the hand wheel is installed at the upper end of the valve rod.
7. The floating self-sealing gate valve for nuclear power plants as claimed in claim 1, wherein the gate valve further comprises a guide rod, the guide rod is vertically installed in the valve body, and the upper end of the guide rod is connected with the gate plate and moves up and down along with the gate plate; the valve body is connected with the guide rod in a sliding fit mode.
8. The floating self-sealing gate valve for nuclear power plant as claimed in claim 1, wherein said medium is a gas.
9. The floating self-sealing gate valve for nuclear power plants as claimed in claim 1, wherein a plurality of annular sealing grooves are uniformly distributed on the outer peripheral surface of the valve seat, and sealing rings are arranged in the annular sealing grooves to seal the valve seat and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121996790.5U CN215861826U (en) | 2021-08-24 | 2021-08-24 | Floating self-sealing gate valve for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121996790.5U CN215861826U (en) | 2021-08-24 | 2021-08-24 | Floating self-sealing gate valve for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861826U true CN215861826U (en) | 2022-02-18 |
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ID=80241852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121996790.5U Active CN215861826U (en) | 2021-08-24 | 2021-08-24 | Floating self-sealing gate valve for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215861826U (en) |
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2021
- 2021-08-24 CN CN202121996790.5U patent/CN215861826U/en active Active
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