High-temperature and high-pressure valve energy dissipation device

Abstract

The utility model discloses a high-temperature and high-pressure valve energy dissipation device. Belongs to the technical field of high-temperature high-pressure valves. According to the technical key points, the device comprises a mounting seat, a fluid channel communicated with a valve pipeline is arranged in the mounting seat, and joints connected with the valve pipeline are arranged at the two ends of the mounting seat; an energy dissipation core is arranged in the fluid channel, and a plurality of layers of energy dissipation plates are arranged in the energy dissipation core at intervals in the axial direction of the fluid channel. Every two adjacent layers of energy dissipation plates are matched to form an energy dissipation cavity, and energy dissipation channels are arranged between every two adjacent layers of energy dissipation cavities in a staggered mode. The high-temperature and high-pressure valve energy dissipation device is simple in structure and capable of greatly reducing cavitation erosion. The device is used for high-temperature and high-pressure valve fluid energy dissipation and pressure

Description

Technical Field

[0001] The utility model relates to a valve energy dissipation device, and more specifically, to a high-temperature and high-pressure valve energy dissipation device. Background Art

[0002] Due to the high temperature and high pressure difference parameter steam-water valves with frequent opening and closing times, high temperature and pressure of the steam-water medium, and harsh operating conditions, it is very easy for the sealing surfaces of the high temperature and high pressure difference parameter steam-water valves to be damaged by cavitation and leakage, affecting the safe and economical operation of the equipment. In addition, the valves are difficult to repair after being damaged and can only be replaced. The service life of the valves is short, the replacement workload is large, and the cost is high. Utility Model Content

[0003] The purpose of the present invention is to address the deficiencies of the prior art and to provide a high-temperature and high-pressure valve energy dissipation device with a simple structure that can significantly reduce cavitation erosion.

[0004] The technical solution of the present utility model is achieved as follows: a high-temperature and high-pressure valve energy dissipation device includes a mounting seat, a fluid channel connected to the valve pipeline is provided in the mounting seat, and joints connected to the valve pipeline are provided at both ends of the mounting seat; an energy dissipation core is provided in the fluid channel, and a plurality of layers of energy dissipation plates are provided in the energy dissipation core at intervals along the axial direction of the fluid channel; energy dissipation cavities are formed between adjacent two layers of energy dissipation plates, and energy dissipation channels are staggered between each layer of energy dissipation cavities.

[0005] In the above-mentioned high-temperature and high-pressure valve energy dissipation device, the energy dissipation channel includes a plurality of through holes uniformly distributed along the circumferential direction on the side walls of each energy dissipation cavity, and the corresponding through holes on two adjacent layers of energy dissipation cavities are connected through a long hole.

[0006] In the above-mentioned high-temperature and high-pressure valve energy dissipation device, the several layers of energy dissipation plates are an energy dissipation column integrally formed in the energy dissipation core, the through holes are connected to the interior of the energy dissipation column to form energy dissipation channels, and the energy dissipation channels are connected and cooperated to form an energy dissipation cavity.

[0007] In the above-mentioned high-temperature and high-pressure valve energy dissipation device, the mounting seat includes a sleeve, and a mounting step that matches the energy dissipation core is provided inside the sleeve; the joints are detachably provided at both ends of the sleeve.

[0008] After the utility model adopts the above structure, when the high-temperature and high-pressure fluid passes through the fluid channel, it collides with the energy dissipation core and enters the energy dissipation channel. When the fluid passes through the energy dissipation cavity along the staggered energy dissipation channels, it collides with each layer of energy dissipation plates in turn and decelerates, which can greatly reduce the cavitation erosion of the sealing surface of the high-temperature and high-pressure difference parameter steam-water valve and extend the service life of the high-temperature and high-pressure valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention will be further described in detail below with reference to the embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.

[0010] Figure 1 It is a structural diagram of the utility model;

[0011] Figure 2 It is a structural diagram of the energy dissipation core of the utility model;

[0012] Figure 3 It is a schematic cross-sectional structural diagram of the energy dissipation core of the utility model.

[0013] In the figure: 1. Mounting seat; 1a. Sleeve; 1b. Mounting step; 2. Fluid channel; 3. Connector; 4. Energy dissipation core; 5. Energy dissipation plate; 6. Energy dissipation cavity; 7. Energy dissipation channel; 7a. Through hole; 7b. Long hole; 8. Energy dissipation column. DETAILED DESCRIPTION

[0014] See Figure 1-3 As shown, the utility model provides a high-temperature and high-pressure valve energy dissipation device, comprising a mounting seat 1, wherein a fluid channel 2 communicating with the valve pipeline is provided in the mounting seat 1, and joints 3 connected to the valve pipeline are provided at both ends of the mounting seat 1; an energy dissipation core 4 is provided in the fluid channel 2, and a plurality of energy dissipation plates 5 are provided in the energy dissipation core 4 along the axial direction of the fluid channel 2; an energy dissipation cavity 6 is formed between two adjacent layers of energy dissipation plates 5, and energy dissipation channels 7 are staggered between each layer of energy dissipation cavity 6. The mounting seat 1 is installed before or after a high-temperature and high-pressure differential parameter steam-water valve through a joint and connected in series with the high-temperature and high-pressure differential valve. When the high-temperature and high-pressure fluid passes through the fluid channel, it collides with the energy dissipation core and enters the energy dissipation channel. When the fluid passes through the energy dissipation cavity along the staggered energy dissipation channel, it collides with each layer of energy dissipation plates in turn and decelerates. This can significantly reduce cavitation erosion on the sealing surface of the high-temperature and high-pressure differential parameter steam-water valve and extend the service life of the high-temperature and high-pressure differential valve.

[0015] In this embodiment, preferably, the energy dissipation channel 7 includes a plurality of through holes 7a uniformly distributed along the circumferential direction on the side walls of each energy dissipation cavity 6, and the corresponding through holes 7a on two adjacent layers of energy dissipation cavities 6 are connected by long holes 7b. When the high-temperature and high-pressure fluid collides with the energy dissipation plate, it flows toward the through holes and collides with the inner wall of the fluid channel outside the energy dissipation core. The fluid then flows along the long holes to the next layer of through holes, and turns on the energy dissipation plate of the next layer to flow toward the staggered long holes and continue to flow to the next layer. In the process of passing through each layer of energy dissipation plate, the fluid needs to undergo three collisions and turns, which can effectively consume the kinetic energy of the fluid and reduce cavitation erosion.

[0016] Further preferably, the plurality of energy dissipation plates 5 are integrally formed as energy dissipation columns 8 within the energy dissipation core 4. The through holes 7a extend into the interior of the energy dissipation columns 8 to form energy dissipation channels 7. The energy dissipation channels 7 are connected and cooperate to form energy dissipation cavities 6. With this structure, fluid in each through hole first collides at the center of the energy dissipation cavity before diffusing to the through holes of the next layer of energy dissipation cavities, further dissipating the fluid's kinetic energy and reducing cavitation erosion.

[0017] In this embodiment, the mounting base 1 includes a sleeve 1a, within which is a mounting step 1b that mates with the energy dissipation core 4. The connectors 3 are detachably mounted at both ends of the sleeve 1a. This structure facilitates removal of the connectors for replacement of the energy dissipation core, as wear of the energy dissipation core over time can affect its effectiveness, or as impurities in the fluid can clog the energy dissipation channel.

[0018] During operation, the energy dissipation core is placed on the installation step and the joints are installed at both ends of the sleeve. The joints are connected in series with the high-temperature and high-pressure differential valve pipeline. When the high-temperature and high-pressure fluid passes through the fluid channel, it collides with the energy dissipation plate and flows into the through holes around it to enter the next layer of energy dissipation cavity. When the fluid collides and decelerates after passing through the multiple layers of energy dissipation cavities, it flows back to the fluid channel and returns to the valve pipeline.

[0019] The above embodiments are preferred implementation methods of the present invention and are only used to facilitate the explanation of the present invention. They are not intended to limit the present invention in any form. Any person with ordinary knowledge in the technical field can, without departing from the scope of the technical features of the present invention, make partial changes or modifications to the technical contents disclosed in the present invention and make equivalent embodiments without departing from the technical features of the present invention. These modifications still fall within the scope of the technical features of the present invention.

Claims

1. A high-temperature and high-pressure valve energy dissipation device, comprising a mounting seat (1), characterized in that: The mounting seat (1) is provided with a fluid channel (2) in communication with the valve pipeline, and joints (3) connected to the valve pipeline are provided at both ends of the mounting seat (1); an energy dissipation core (4) is provided in the fluid channel (2), and a plurality of layers of energy dissipation plates (5) are provided in the energy dissipation core (4) at intervals along the axial direction of the fluid channel (2); two adjacent layers of energy dissipation plates (5) cooperate to form an energy dissipation cavity (6), and energy dissipation channels (7) are respectively arranged alternately between the layers of energy dissipation cavities (6).

2. A high temperature and high pressure valve energy dissipation device according to claim 1, characterized in that: The energy dissipation channel (7) comprises a plurality of through holes (7a) uniformly distributed along the circumferential direction on the side walls of each energy dissipation cavity (6), and the corresponding through holes (7a) on two adjacent layers of energy dissipation cavities (6) are conductively connected via a long hole (7b).

3. A high temperature and high pressure valve energy dissipation device according to claim 2, characterized in that: The plurality of layers of energy dissipation plates (5) are an energy dissipation column (8) integrally formed in the energy dissipation core (4); the through hole (7a) is connected to the interior of the energy dissipation column (8) to form an energy dissipation channel (7); and the energy dissipation channels (7) are connected and cooperated to form an energy dissipation cavity (6).

4. A high-temperature and high-pressure valve energy dissipation device according to claim 1, characterized in that: The mounting seat (1) comprises a sleeve (1a), and a mounting step (1b) matching the energy dissipation core (4) is provided inside the sleeve (1a); the joints (3) are detachably provided at both ends of the sleeve (1a).

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