CN210716047U - Self sealss stop valve for power station - Google Patents
Self sealss stop valve for power station Download PDFInfo
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- CN210716047U CN210716047U CN201921468440.4U CN201921468440U CN210716047U CN 210716047 U CN210716047 U CN 210716047U CN 201921468440 U CN201921468440 U CN 201921468440U CN 210716047 U CN210716047 U CN 210716047U
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Abstract
The utility model relates to the technical field of stop valves, in particular to a self-sealing stop valve for a power station, which comprises a valve body, an upper adjusting rod and a sealing block, wherein the valve body comprises an upper bracket, a valve port, a liquid inlet, a liquid outlet and a bottom groove; the center of the bracket is positioned right above the center of the valve port, the upper adjusting rod penetrates through the center of the bracket and is connected with the bracket in a threaded connection mode, and the upper adjusting rod is inserted into the valve port; the lower end of the upper adjusting rod is provided with a valve block, the upper adjusting rod penetrates through the center of the sealing block, and the top end of the upper adjusting rod is provided with an adjusting handle; the upper adjusting rod is provided with a pressing block, the upper adjusting rod penetrates through the center of the pressing block and is connected in a threaded connection mode, and the pressing block is used for pressing the sealing block. The stop valve has the advantages of simple structure, high temperature and high pressure resistance of the used material, corrosion resistance and suitability for use in a power plant.
Description
Technical Field
The utility model relates to a stop valve technical field, concretely relates to self sealss stop valve for power station.
Background
The stop valve is an extremely important cut-off valve, and a valve rod of the stop valve drives a valve clack to vertically move along a vertical central line of a valve body, so that a sealing surface of the valve clack is tightly attached to a sealing surface of the valve body, and a medium is prevented from leaking along a gap between the sealing surfaces. The stop valve is applied to various system pipelines of a fire power station, and the medium circulating in the stop valve is non-corrosive medium such as high-temperature and high-pressure water, steam and the like, and has good self-sealing performance. At present, self sealss stop valve mainly is wood's formula self sealss structure, including four ring openings, wedge from the sealing washer, when the pressure load of medium is used on the valve gap, the valve gap jack-up upwards exerts pressure to the wedge is sealed to fill up, realizes the valve gap and closely laminates with wedge self sealss circle under the effect of blockking of four ring openings, realizes the stop valve self sealss promptly. However, when the wood type self-sealing structure is used for the small diameter stop valve, in order to reserve a sufficient space for installing and removing the four-open ring, the small diameter stop valve inevitably increases the valve body space, and accordingly increases the weight and cost of the stop valve.
In the existing stop valve, in order to achieve the purpose of sealing and easy adjustment, the stop valve designed by a designer is too complex in structure, so that the manufacturing cost and the maintenance cost are increased, and the stop valve is too heavy, practical and inconvenient.
Therefore, a stop valve with simple structure, good sealing performance, high temperature and pressure resistance and corrosion resistance needs to be designed.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the prior art, the utility model provides a self sealss stop valve for power station, specific technical scheme is as follows:
a stop valve for a self-sealing power station comprises a valve body, an upper adjusting rod and a sealing block,
the valve body comprises an upper bracket, a valve port, a liquid inlet, a liquid outlet and a bottom groove;
the center of the bracket is positioned right above the center of the valve port, the upper adjusting rod penetrates through the center of the bracket and is connected with the bracket in a threaded connection mode, and the upper adjusting rod is inserted into the valve port;
the lower end of the upper adjusting rod is provided with a valve block,
the upper adjusting rod penetrates through the center of the sealing block, and the top end of the upper adjusting rod is provided with an adjusting handle;
the upper adjusting rod is provided with a pressing block, the upper adjusting rod penetrates through the center of the pressing block and is connected in a threaded connection mode, and the pressing block is used for pressing the sealing block.
The sealing block has a trapezoidal longitudinal section with a wide upper part and a narrow lower part.
The upper adjusting rod is provided with a gasket, and the gasket is positioned between the pressing block and the sealing block. Liquid is prevented from leaking through the gap between the sealing block and the upper adjustment rod in the event of excessive pressure.
The diameter of the valve block is 0.5-1.5 cm larger than that of the valve port.
The bottom of the valve block is matched with the bottom groove.
The pressing block is provided with an adjusting handle.
The valve block and the sealing block are both made of compressible, corrosion-resistant, high-temperature and high-pressure resistant materials.
When the stop valve is closed, the upper adjusting rod is screwed downwards by rotating the adjusting handle, so that the valve block is driven to move downwards, the liquid inlet is sealed, the adjusting rod is continuously screwed downwards, and the liquid outlet is further sealed until the valve block enters the bottom groove; and then, the pressing block is screwed down to press the pressing block against the sealing block, so that the valve port is further sealed, and fluid is prevented from leaking from the valve port due to poor sealing performance of the valve block. When manual adjustment is difficult, a motor-driven handle may be used to adjust the opening and closing of the shut-off valve.
The utility model has the advantages that: the utility model provides a stop valve is provided with sealed piece and gasket to the diameter of valve piece is greater than the valve port diameter, and the sealing fluid that can be fine prevents that the fluid from leaking, and the fluidic flow in fine regulation pipeline. In addition, the stop valve has the advantages of simple structure, high temperature and high pressure resistance of the used material, corrosion resistance and suitability for being used in a power plant.
Drawings
Fig. 1 is the utility model discloses a self sealss cut-away view of stop valve for power station.
The valve comprises a valve body 1, a support 101, a valve port 102, a liquid inlet 103, a liquid outlet 104, a bottom groove 105, an upper adjusting rod 2, a valve block 201, a sealing block 3, a pressing block 4, a gasket 5 and a handle 6.
The specific implementation mode is as follows:
in order to deepen understanding of the present invention, the following detailed description is made on the embodiments of the present invention with reference to the accompanying drawings.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve.
Examples
With reference to figure 1 of the drawings,
a stop valve for a self-sealing power station comprises a valve body 1, an upper adjusting rod 2 and a sealing block 3,
the valve body comprises an upper bracket 101, a valve port 102, a liquid inlet 103, a liquid outlet 104 and a bottom groove 105;
the center of the bracket 101 is positioned right above the center of the valve port 102, the upper adjusting rod 2 penetrates through the center of the bracket 101 and is connected with the bracket 101 in a threaded connection mode, and the upper adjusting rod 2 is inserted into the valve port;
the lower end of the upper adjusting rod 2 is provided with a valve block 201,
the upper adjusting rod 2 penetrates through the center of the sealing block 3, and the top end of the upper adjusting rod 2 is provided with an adjusting handle 6;
the upper adjusting rod 2 is provided with a pressing block 4, the upper adjusting rod 2 penetrates through the center of the pressing block 4 and is connected in a threaded connection mode, and the pressing block 4 is used for pressing the sealing block 3.
The sealing block 3 has a trapezoidal longitudinal section with a wide top and a narrow bottom.
The upper adjusting rod 2 is provided with a gasket 5, and the gasket 5 is positioned between the pressing block 4 and the sealing block 3, so that liquid is prevented from leaking through a gap between the sealing block and the upper adjusting rod under the condition of overlarge pressure.
The diameter of the valve block 201 is 0.5-1.5 cm larger than that of the valve port 102.
The bottom of the valve block 201 fits into the bottom groove 105.
The pressing block 4 is provided with an adjusting handle 6.
The valve block and the sealing block are both made of compressible, corrosion-resistant, high-temperature and high-pressure resistant materials.
The use process comprises the following steps: when the stop valve is closed, the upper adjusting rod 2 is screwed downwards by rotating the adjusting handle 6, so that the valve block 201 is driven to move downwards, the liquid inlet 103 is sealed, the upper adjusting rod 2 is screwed downwards continuously, and the liquid outlet 104 is further sealed until the valve block enters the bottom groove 105; then, the pressing block is screwed down, so that the pressing block 4 is pressed against the sealing block 3, the valve port 102 is further sealed, and fluid is prevented from leaking from the valve port 102 due to the poor sealing performance of the valve block 201.
The utility model provides a stop valve is provided with sealed piece and gasket to the diameter of valve piece is greater than the valve port diameter, and the sealing fluid that can be fine prevents that the fluid from leaking, and the fluidic flow in fine regulation pipeline. In addition, the stop valve has the advantages of simple structure, high temperature and high pressure resistance of the used material, corrosion resistance and suitability for being used in a power plant.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme consisting of the equivalent replacement of the technical features. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.
Claims (6)
1. A stop valve for a self-sealing power station is characterized by comprising a valve body, an upper adjusting rod and a sealing block,
the valve body comprises an upper bracket, a valve port, a liquid inlet, a liquid outlet and a bottom groove;
the center of the bracket is positioned right above the center of the valve port, the upper adjusting rod penetrates through the center of the bracket and is connected with the bracket in a threaded connection mode, and the upper adjusting rod is inserted into the valve port;
the lower end of the upper adjusting rod is provided with a valve block,
the upper adjusting rod penetrates through the center of the sealing block, and the top end of the upper adjusting rod is provided with an adjusting handle;
the upper adjusting rod is provided with a pressing block, the upper adjusting rod penetrates through the center of the pressing block and is connected in a threaded connection mode, and the pressing block is used for pressing the sealing block.
2. The shut-off valve of claim 1, wherein the sealing block has a trapezoidal longitudinal section with a wide top and a narrow bottom.
3. The shut-off valve of claim 1, wherein a gasket is mounted on the upper adjustment rod and is positioned between the pressure block and the sealing block.
4. The shut-off valve of claim 1, wherein the diameter of the valve block is 0.5-1.5 cm greater than the diameter of the valve port.
5. The shut-off valve of claim 1, wherein the bottom of said valve block is flush with said bottom groove.
6. The shut-off valve of claim 1, wherein said pressure block is provided with an adjustment knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921468440.4U CN210716047U (en) | 2019-09-05 | 2019-09-05 | Self sealss stop valve for power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921468440.4U CN210716047U (en) | 2019-09-05 | 2019-09-05 | Self sealss stop valve for power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210716047U true CN210716047U (en) | 2020-06-09 |
Family
ID=70966886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921468440.4U Active CN210716047U (en) | 2019-09-05 | 2019-09-05 | Self sealss stop valve for power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210716047U (en) |
-
2019
- 2019-09-05 CN CN201921468440.4U patent/CN210716047U/en active Active
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