Special pressure reducing valve for temperature and pressure reducer

Abstract

The utility model provides a special pressure reducing valve for a temperature and pressure reducer, and relates to the technical field of special pressure reducing valves for temperature and pressure reducers, the special pressure reducing valve comprises a valve body, a filter box, a water pipe, air pipes, connecting pieces and a filter assembly, the air pipes are arranged on the two sides of the valve body, the connecting pieces are arranged on the two sides of the valve body, and the water pipe is arranged on the connecting pieces. A filter box is arranged on the water pipe, a filter assembly is arranged in the filter box, and the end, away from the valve body, of the filter box is connected with a water supply mechanism. According to the pressure reducing valve special for the temperature and pressure reducer, cooling water entering the valve body can be prevented from containing impurities and blocking a cooling water vaporific spraying opening in the valve body, so that the temperature reducing effect of the pressure reducing valve special for the temperature and pressure reducer can be guaranteed, and the error-tolerant rate of operation of the pressure reducing valve special for the temperature and pressure reducer can be reduced by arranging a two-strand cooling water injection mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of a special pressure reducing valve for a temperature and pressure reducing device, and more specifically, relates to a special pressure reducing valve for a temperature and pressure reducing device. Background Art

[0002] A pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through regulation, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From the perspective of fluid mechanics, a pressure reducing valve is a throttling element with variable local resistance, that is, by changing the throttling area, the flow velocity and the kinetic energy of the fluid are changed, resulting in different pressure losses, thereby achieving the purpose of pressure reduction; then, relying on the regulation of the control and regulation system, the fluctuation of the valve outlet pressure is balanced with the spring force, so that the valve outlet pressure is kept constant within a certain error range; the high-temperature and high-pressure gas generated in the steam turbine of a power plant usually requires a desuperheater and pressure reducer. The pressure reducing valve is usually installed in the pipeline of the desuperheater and pressure reducer, and is mainly used to stabilize the outlet pressure within a set range to ensure that the outlet pressure does not change due to changes in the inlet pressure.

[0003] Based on the above, the inventors have discovered the following problems: the current special pressure reducing valve for temperature reducing and pressure reducing device generally uses cooling water to achieve the cooling effect. The method is to spray mist cooling water into the high-temperature gas pipeline to achieve the cooling effect of the high-temperature gas in the pipeline. However, if the cooling water contains impurities and blocks the mist injection port, it will affect the cooling effect of the special pressure reducing valve for temperature reducing and pressure reducing device.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a special pressure reducing valve for a temperature and pressure reducing device is provided, in order to achieve the purpose of having more practical value. Utility Model Content

[0005] The purpose and effect of the utility model of a special pressure reducing valve for a temperature and pressure reducing device are achieved by the following specific technical means:

[0006] A pressure reducing valve specially used for a temperature and pressure reducing device comprises a valve body, a filter box, a water pipe, an air pipe, a connector and a filter assembly. Air pipes are provided on both sides of the valve body, connectors are provided on both sides of the valve body other than the air pipe, water pipes are provided on the connectors, a filter box is provided on the water pipe, a filter assembly is provided in the filter box, and a water supply mechanism is connected to the end of the filter box away from the valve body.

[0007] Furthermore, the filter assembly includes a sealing cover, a filter plate and a snap-fit ​​assembly. The filter box is provided with a filter plate, snap-fit ​​assemblies are provided on both sides of the upper end of the filter plate, and a sealing cover is provided on the upper end of the filter plate.

[0008] Furthermore, the locking assembly includes a locking piece, a locking slot, a connecting block, a handle, a telescopic sealing strip, a spring and a chamber. Chambers are opened on both sides of the filter plate, a spring is provided in the chamber, one end of the spring is connected to a connecting block, one end of the connecting block is provided with a locking piece, the locking piece passes through the side of the filter plate and extends out of the filter plate to engage with the locking slot, a handle is provided on the side of the connecting block, the handle passes through the outside of the chamber and is connected to a telescopic sealing strip, and the non-handle side of the telescopic sealing strip is connected to the filter plate.

[0009] Furthermore, the telescopic sealing strip is made of rubber.

[0010] Furthermore, one end of the sealing cover is connected to one side of the filter box through a hinge seat, and the other end of the sealing cover is connected to the other side of the filter box through a bolt.

[0011] Furthermore, a sealing layer is provided at the lower end of the sealing cover.

[0012] Furthermore, cooling water is provided in the water pipe.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the utility model, the design of the snap-fit ​​assembly allows the filter plate to be conveniently installed in the filter box, thereby allowing the filter plate to be quickly removed and installed. When the filter plate needs to be removed, the water supply mechanism is first closed, the sealing cover is opened, and then the handle is turned to drive the connecting block to move, squeeze the spring, and drive the card to disengage from the card slot, so that the filter plate can be simply removed from the filter box.

[0015] The design of the filter assembly can prevent the cooling water entering the valve body from containing impurities and clogging the cooling water mist injection port in the valve body, thereby ensuring the cooling effect of the pressure reducing valve for the desuperheater and pressure reducer. In addition, the design of two cooling water injections can reduce the fault tolerance of the operation of the pressure reducing valve for the desuperheater and pressure reducer.

[0016] The sealing effect of the sealing cover can be enhanced by providing a sealing layer at the lower end of the sealing cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a special pressure reducing valve for a temperature and pressure reducing device of the utility model.

[0018] Figure 2 The utility model is a schematic diagram of a special pressure reducing valve filter assembly for a temperature and pressure reducing device.

[0019] Figure 3 This utility model is a special pressure reducing valve for temperature and pressure reducing device. Figure 2 Schematic diagram of point A.

[0020] Figure 4It is a cross-sectional schematic diagram of a special pressure reducing valve engaging assembly for a temperature and pressure reducing device of the utility model.

[0021] Figure 5 This utility model is a special pressure reducing valve for temperature and pressure reducing device. Figure 2 Schematic diagram of point B.

[0022] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0023] 1. Valve body; 2. Filter box; 3. Air pipe; 4. Connector; 5. Filter plate; 6. Water pipe; 7. Sealing cover; 8. Slot; 9. Clamp; 10. Connector block; 11. Telescopic sealing strip; 12. Chamber; 13. Spring; 14. Handle. DETAILED DESCRIPTION

[0024] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] Example:

[0028] As attached Figure 1 To the attached Figure 5 As shown:

[0029] The utility model provides a special pressure reducing valve for a temperature and pressure reducing device, comprising a valve body 1, a filter box 2, a water pipe 6, an air pipe 3, a connector 4 and a filter assembly, wherein the air pipe 3 is provided on both sides of the valve body 1, and connectors 4 are provided on both sides of the valve body 1 other than the air pipe 3, the connector 4 is provided with a water pipe 6, the water pipe 6 is provided with a filter box 2, the filter assembly is provided in the filter box 2, and the end of the filter box 2 away from the valve body 1 is connected to a water supply mechanism.

[0030] The filter assembly includes a sealing cover 7, a filter plate 5 and a snap-fit ​​assembly. The filter box 2 is provided with a filter plate 5. The filter plate 5 has snap-fit ​​assemblies on both sides of its upper end. The filter plate 5 has a sealing cover 7 on its upper end.

[0031] Through the design of the filter component, it is possible to prevent the cooling water entering the valve body 1 from containing impurities and clogging the cooling water mist injection port in the valve body 1, thereby ensuring the cooling effect of the special pressure reducing valve for the temperature and pressure reducing device. In addition, by setting up a design of two cooling water injections, the fault tolerance rate of the operation of the special pressure reducing valve for the temperature and pressure reducing device can be reduced.

[0032] The clamping assembly includes a clamping member 9, a clamping slot 8, a connecting block 10, a handle 14, a telescopic sealing strip 11, a spring 13 and a chamber 12. The filter plate 5 is provided with a chamber 12 on both sides. A spring 13 is provided in the chamber 12. One end of the spring 13 is connected to the connecting block 10. One end of the connecting block 10 is provided with a clamping member 9. The clamping member 9 passes through the side of the filter plate 5 and extends out of the filter plate 5 to engage with the clamping slot 8. A handle 14 is provided on the side of the connecting block 10. The handle 14 passes through the outside of the chamber 12 and is connected to the telescopic sealing strip 11. The side of the telescopic sealing strip 11 other than the handle 14 is connected to the filter plate 5.

[0033] Through the design of the snap-fit ​​assembly, the filter plate 5 can be conveniently installed in the filter box 2, so that the filter plate 5 can be quickly disassembled and installed. When the filter plate 5 needs to be disassembled, the water supply mechanism is first closed, the sealing cover 7 is opened, and then the handle 14 is turned to drive the connecting block 10 to move, squeeze the spring 13, and drive the clamping member 9 to disengage the clamping slot 8, so that the filter plate 5 can be simply removed from the filter box 2.

[0034] Wherein, the telescopic sealing strip 11 is made of rubber;

[0035] By designing the retractable sealing strip 11 to be made of rubber, the sealing effect when the engaging assembly is engaged can be enhanced.

[0036] One end of the sealing cover 7 is connected to one side of the filter box 2 through a hinge seat, and the other end of the sealing cover 7 is connected to the other side of the filter box 2 through a bolt;

[0037] The design that the other end of the sealing cover 7 is connected to the other side of the filter box 2 by bolts makes the installation of the sealing cover 7 more secure.

[0038] Wherein, a sealing layer is provided at the lower end of the sealing cover 7;

[0039] The sealing effect of the sealing cover 7 can be enhanced by providing a sealing layer at the lower end of the sealing cover 7 .

[0040] Wherein, cooling water is provided in the water pipe 6 .

[0041] The specific usage and function of this embodiment are as follows:

[0042] In the present invention, the design of the snap-fit ​​assembly allows the filter plate 5 to be conveniently installed in the filter box 2, thereby allowing the filter plate 5 to be quickly removed and installed. When the filter plate 5 needs to be removed, the water supply mechanism is first closed, the sealing cover 7 is opened, and then the handle 14 is turned to drive the connecting block 10 to move, squeezing the spring 13 to drive the clamping member 9 out of the clamping slot 8, thereby allowing the filter plate 5 to be simply removed from the filter box 2.

[0043] The design of the filter assembly can prevent the cooling water entering the valve body 1 from containing impurities and clogging the cooling water mist injection port in the valve body 1, thereby ensuring the cooling effect of the pressure reducing valve for the temperature and pressure reducing device. In addition, the design of providing two cooling water injections can reduce the fault tolerance of the operation of the pressure reducing valve for the temperature and pressure reducing device.

[0044] The sealing effect of the sealing cover 7 can be enhanced by providing a sealing layer at the lower end of the sealing cover 7 .

[0045] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A pressure reducing valve for a temperature and pressure reducing device, comprising a valve body (1), a filter box (2), a water pipe (6), an air pipe (3), a connector (4) and a filter assembly, characterized in that: Air pipes (3) are provided on both sides of the valve body (1), and connecting pieces (4) are provided on both sides of the valve body (1) other than the air pipes (3). A water pipe (6) is provided on the connecting piece (4), and a filter box (2) is provided on the water pipe (6). A filter assembly is provided in the filter box (2), and a water supply mechanism is connected to the end of the filter box (2) away from the valve body (1).

2. A pressure reducing valve for a temperature and pressure reducing device according to claim 1, characterized in that: The filter assembly comprises a sealing cover (7), a filter plate (5) and a snap-fit ​​assembly; the filter box (2) is provided with a filter plate (5); snap-fit ​​assemblies are provided on both sides of the upper end of the filter plate (5); and the upper end of the filter plate (5) is provided with a sealing cover (7).

3. A pressure reducing valve for a temperature and pressure reducing device according to claim 2, characterized in that: The clamping assembly comprises a clamping member (9), a clamping slot (8), a connecting block (10), a handle (14), a telescopic sealing strip (11), a spring (13) and a chamber (12). The filter plate (5) is provided with a chamber (12) on both sides. A spring (13) is provided in the chamber (12). One end of the spring (13) is connected to the connecting block (10). One end of the connecting block (10) is provided with a clamping member (9). The clamping member (9) passes through the side of the filter plate (5) and extends out of the filter plate (5) to engage with the clamping slot (8). The side of the connecting block (10) is provided with a handle (14). The handle (14) passes through the chamber (12) and is connected to the telescopic sealing strip (11). The side of the telescopic sealing strip (11) other than the handle (14) is connected to the filter plate (5).

4. A pressure reducing valve for a temperature and pressure reducing device as claimed in claim 3, characterized in that: The telescopic sealing strip (11) is made of rubber.

5. A pressure reducing valve for a temperature and pressure reducing device as claimed in claim 4, characterized in that: One end of the sealing cover (7) is connected to one side of the filter box (2) via a hinge seat, and the other end of the sealing cover (7) is connected to the other side of the filter box (2) via a bolt.

6. A pressure reducing valve for a temperature and pressure reducing device as claimed in claim 5, characterized in that: The lower end of the sealing cover (7) is provided with a sealing layer.

7. A pressure reducing valve for a temperature and pressure reducing device according to claim 6, characterized in that: Cooling water is provided in the water pipe (6).

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