CN214466365U - Preset safety device for gate valve generating boiler effect - Google Patents
Preset safety device for gate valve generating boiler effect Download PDFInfo
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- CN214466365U CN214466365U CN202023336628.9U CN202023336628U CN214466365U CN 214466365 U CN214466365 U CN 214466365U CN 202023336628 U CN202023336628 U CN 202023336628U CN 214466365 U CN214466365 U CN 214466365U
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- gate valve
- safety device
- nut
- boiler
- discharge pipe
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Abstract
The utility model belongs to the technical field of valve manufacturing, in particular to a safety device for presetting a gate valve when a boiler effect occurs, which comprises a discharge pipe, a body, a spring, a locking nut, a sealing gasket and an end cap nut; the discharge pipe is connected with the locking nut, the spring is arranged between the locking nut and the body, the spring is compressed to enable the discharge pipe to be attached and sealed with the body, the sealing gasket is arranged on the end face of the body, and the body is connected with and fastened with the end cover nut. The utility model discloses eliminate the boiler effect that steam conduit gate valve often takes place, under the condition of guaranteeing that the system does not stop, eliminate boiler effect, guarantee system normal operating.
Description
Technical Field
The utility model belongs to the technical field of the valve is made, concretely relates to preset is used for gate valve to take place safety device when boiler effect.
Background
The defect that the valve cannot be opened or the valve rod is broken due to the effect of the boiler effect frequently occurs in the operation process of the gate valve of the steam system of the power plant, and the function of the gate valve is seriously influenced by the boiler effect. To eliminate this drawback, the system is shut down, and the gate valve is opened slightly in advance to eliminate the upper chamber pressure, or a hole is made in the side gate plate to eliminate the upper chamber pressure. These measures all can cause very big economic benefits loss, and the flashboard is punched and also can reduce the intensity of flashboard, influences the life-span of gate valve.
Therefore, it is desirable to provide a safety device for a gate valve to eliminate boiler effect in time when boiler effect occurs in the gate valve, so as to ensure smooth opening of the gate valve
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a preset safety device that is used for when gate valve takes place boiler effect, eliminate the boiler effect that steam conduit gate valve often takes place, under the condition of guaranteeing that the system does not shut down, eliminate boiler effect, guarantee system normal operating.
Realize the utility model discloses the technical scheme of purpose:
a safety device for a gate valve during boiler effect generation is preset, and the device comprises a discharge pipe, a body, a spring, a locking nut, a sealing gasket and an end cover nut;
the discharge pipe is connected with the locking nut, the spring is arranged between the locking nut and the body, the spring is compressed to enable the discharge pipe to be attached and sealed with the body, the sealing gasket is arranged on the end face of the body, and the body is connected with and fastened with the end cover nut.
The discharge pipe is provided with a discharge hole.
The discharge pipe is connected with the locking nut through threads.
The body and the forced opening nut are connected through threads.
The lower part of the forced opening nut is attached to the locking nut.
The sealing gasket is placed on the upper end face of the body.
The body is connected and fastened with the end cover nut, and the sealing gasket is compressed to realize sealing.
The discharge pipe is attached to the body in a sealing manner to form a sealing surface.
The utility model has the advantages of:
(1) according to the principle and the position of boiler effect generation, the utility model designs a special connecting pipe on the upper cavity shell of the gate valve, which can provide the relief function;
(2) the boiler effect can be recovered again after being eliminated, and the safe and reliable operation of the valve is ensured;
(3) the device simple structure, convenient operation can solve the problem of handling that the boiler effect takes place for the gate valve in service, does not need the boiler effect that the shut down system can handle the gate valve.
Drawings
FIG. 1 is a schematic structural view of a safety device for a gate valve to generate boiler effect according to the present invention;
in the figure: 1-a discharge pipe; 2-sealing surface; 3-body; 4-a spring; 5-locking the nut; 6-a forced open nut; 7-a sealing gasket; 8-end cap nut; 9-bleed hole.
Detailed Description
In order to make those skilled in the art better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be apparent that the embodiments described below are only some, but not all embodiments of the present invention. Based on the embodiments recorded in the present invention, all other embodiments obtained by those skilled in the art without creative efforts are all within the scope of the present invention.
As shown in figure 1, the utility model provides a preset safety device that is used for when gate valve takes place boiler effect, the device is including letting out pipe 1, sealed face 2, body 3, spring 4, lock nut 5, strong nut 6, seal gasket 7, end cap nut 8 and bleed hole 9.
The discharge pipe 1 is connected with the locking nut 5 through threads;
the compression spring 4 makes the discharge pipe 1 and the body 3 fit to realize sealing through the elasticity of the spring 4.
The discharge pipe 1 is jointed with the body 3 in a sealing way to form a sealing surface 2.
The forced opening nut 6 is connected with the body 3 through threads;
the lower part of the forced opening nut 6 is attached to the locking nut 5.
The sealing gasket 7 is arranged on the end surface of the body 3;
the end cover nut 8 is connected and fastened with the body 3 by the thread;
the end cap nut 8 compresses the sealing gasket 7 to realize sealing.
A method of using a safety device preset for use in a gate valve boiler event, the method comprising the steps of:
step 1, when the gate valve has boiler effect, taking down an end cover nut 8 and a sealing gasket 7;
a strong opening nut 6 is rotated downwards by using an inner hexagonal wrench, the sealing surface of the discharge pipe 1 is separated from the sealing surface 2 of the body 3, and high-pressure steam on the upper cavity of the gate valve is discharged upwards through a discharge hole 9;
discharging the valve body through a release hole in the forcible opening nut 6, and eliminating high pressure of a gate valve cavity so that the gate valve can be opened;
and 2, after the effect of the gate valve boiler is eliminated and when the effect needs to be recovered, the internal hexagonal wrench is used for upwards rotating the forced opening nut 6, the sealing surface of the discharge pipe 1 is in contact and pressing with the sealing surface of the body 3 under the action of the spring 4, sealing is realized, the sealing gasket 7 is installed, and the end cover nut 8 is fastened, so that double sealing is realized.
In the prior art, the defects that a valve cannot be opened or a valve rod is broken due to the effect of a boiler effect frequently occur in the operation process of a gate valve of a steam system of a power plant, and the function of the gate valve is seriously influenced by the boiler effect. To eliminate this drawback, the system is shut down, and the gate valve is opened slightly in advance to eliminate the upper chamber pressure, or a hole is made in the side gate plate to eliminate the upper chamber pressure. These measures all can cause very big economic benefits loss, and the flashboard is punched and also can reduce the intensity of flashboard, influences the life-span of gate valve.
The utility model provides a pair of preset safety device that is used for when gate valve generator boiler response adds man-hour at the gate valve, replaces original epicoele hydrostatic test takeover, with body 3 and valve epicoele welded connection, accomplishes the installation of this device.
The utility model discloses fine using value has been produced:
the utility model eliminates the boiler effect which often occurs in the steam pipeline gate valve, eliminates the boiler effect under the condition of ensuring that the system does not stop running, and ensures the normal running of the system;
the utility model designs a special connecting pipe on the upper cavity shell of the gate valve according to the principle and position of boiler effect generation, which can provide relief function;
the utility model can recover again after the boiler effect is eliminated, and the safe and reliable operation of the valve is ensured;
the device of the utility model has simple structure and convenient operation;
the utility model discloses can solve the processing problem that boiler effect takes place for the gate valve in service, not need the boiler effect that the gate valve can be handled to the system of stopping transport.
The present invention has been described in detail with reference to the drawings and examples, but the present invention is not limited to the above examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. The present invention can adopt the prior art for the content which is not described in detail in the present invention.
Claims (8)
1. The utility model provides a preset safety device that is used for when gate valve emergence boiler effect which characterized in that: the device comprises a discharge pipe (1), a body (3), a spring (4), a locking nut (5), a sealing gasket (7) and an end cover nut (8);
wherein, let out pipe (1) and lock nut (5) and be connected, spring (4) are put between lock nut (5) and body (3), and compression spring (4) make and let out pipe (1) and body (3) laminating sealed, and seal gasket (7) are placed in the terminal surface of body (3), and body (3) are connected and are fastened with end cover nut (8).
2. The safety device for the pre-set of a gate valve for boiler applications of claim 1, wherein: the discharge pipe (1) is provided with a discharge hole (9).
3. The safety device for the pre-set of a gate valve for boiler applications of claim 2, wherein: the discharge pipe (1) is connected with the locking nut (5) through threads.
4. A safety device for pre-setting a gate valve for boiler applications according to claim 3, wherein: the body (3) is connected with the forced opening nut (6) through threads.
5. The safety device of claim 4, wherein the safety device is adapted to be used in the event of a boiler effect on a gate valve, and further comprises: the lower part of the forced opening nut (6) is attached to the locking nut (5).
6. The safety device of claim 5, wherein the safety device is adapted to be used in the event of a boiler effect on a gate valve, and further comprises: the sealing gasket (7) is placed on the upper end face of the body (3).
7. The safety device of claim 6, wherein the safety device is adapted to be used in the event of a boiler effect on a gate valve, and further comprises: the body (3) is connected and fastened with an end cover nut (8), and a sealing gasket (7) is compressed to realize sealing.
8. The safety device of claim 7, wherein the safety device is adapted to be used in the event of a boiler effect on a gate valve, and further comprises: the discharge pipe (1) is attached to the body (3) in a sealing manner to form a sealing surface (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023336628.9U CN214466365U (en) | 2020-12-31 | 2020-12-31 | Preset safety device for gate valve generating boiler effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023336628.9U CN214466365U (en) | 2020-12-31 | 2020-12-31 | Preset safety device for gate valve generating boiler effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214466365U true CN214466365U (en) | 2021-10-22 |
Family
ID=78110549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023336628.9U Active CN214466365U (en) | 2020-12-31 | 2020-12-31 | Preset safety device for gate valve generating boiler effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214466365U (en) |
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2020
- 2020-12-31 CN CN202023336628.9U patent/CN214466365U/en active Active
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