Valve capable of rapidly adjusting pressure difference

Abstract

The utility model discloses a valve capable of rapidly adjusting differential pressure, and relates to the technical field of pipeline valves. The valve capable of rapidly adjusting the pressure difference comprises a valve body, the valve body is provided with an adjusting pipe connected with a main pipeline, the adjusting pipe is provided with a mounting groove, valve clacks are arranged in the mounting groove, a spring is arranged between the two valve clacks, the two valve clacks are provided with first throttling through holes aligned with each other, and the first throttling through holes are communicated with the main pipeline. The first throttling through hole is detachably connected with a blocking piece. The detachable connection mode of the blocking piece is convenient to operate, the flow area of the adjusting pipe can be rapidly changed according to actual needs, and therefore rapid adjustment of the pressure difference is achieved. The valve capable of rapidly adjusting the pressure difference has the advantages of being high in adjusting speed and good in using effect.

Description

Technical Field

[0001] This utility model relates to the field of pipeline valve technology, specifically to a valve for rapid differential pressure adjustment. Background Technology

[0002] In thermal power generating units, to adjust the pressure difference between the superheater desuperheating water and superheated steam, ensure that the desuperheating water can be injected normally into the superheater for desuperheating, and prevent the superheater from overheating, a feedwater pressure relief valve is usually installed on the main feedwater pipeline. The feedwater pressure relief valve is activated by the elasticity of an internal spring. When the pressure in the main feedwater pipeline is lower than the set pressure of the feedwater pressure relief valve, the valve core blocks the pipeline under the action of the spring force; when the pressure in the main feedwater pipeline is higher than the set pressure, the valve core compresses the spring, the pipeline is opened, and liquid flows through the feedwater pressure relief valve.

[0003] Currently, there are instances where the original pressure differential setting of the pressure-retaining valve does not match the actual operating conditions. This results in insufficient desuperheating water pressure to meet the superheater's desuperheating requirements, or excessively high superheater desuperheating water pressure, shortening equipment lifespan. Furthermore, after the problem occurs, existing technology cannot quickly adjust the pressure differential of the feedwater pressure-retaining valve to meet actual operational needs.

[0004] Therefore, existing technologies need to be improved. Utility Model Content

[0005] The technical problem to be solved by this utility model is that existing water supply pressure relief valves cannot quickly adjust the pressure difference. The purpose is to provide a valve for rapid pressure difference adjustment, which adopts corresponding technical means and has the advantages of fast adjustment speed and good performance.

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model provides a valve for rapid differential pressure adjustment, comprising a valve body, an adjusting pipe connected to a main pipeline, an adjusting pipe having a mounting groove, a valve disc having a valve disc having a spring having a spring having a first flow hole having a mutual alignment between the two valve discs, and a plug having a detachably connected first flow hole having a plug. This detachable connection of the plug facilitates operation and allows for rapid adjustment of the flow area of ​​the adjusting pipe according to actual needs, thereby achieving rapid differential pressure adjustment.

[0008] Furthermore, in this utility model, the first flow hole is configured as a threaded hole, and the plugging component is configured as a threaded plug.

[0009] Furthermore, in this utility model, the valve disc mentioned above includes a sealing section and a connecting section, the sealing section being connected to the groove wall of the mounting groove, and the connecting section being connected to the spring.

[0010] Furthermore, in this invention, the sealing section described above is provided with a second flow hole.

[0011] Furthermore, in this utility model, the connecting segment described above is provided with receiving holes to accommodate both ends of the spring.

[0012] Furthermore, in this utility model, a guide sleeve is provided inside the aforementioned receiving hole, and the spring is disposed inside the guide sleeve.

[0013] Furthermore, in this utility model, the mounting groove described above is provided with a sealing ring, and the sealing section is connected to the sealing ring.

[0014] Furthermore, in this utility model, the side wall of the connecting section is provided with an annular groove, and the valve body is provided with a limiting member that inserts into the annular groove.

[0015] Furthermore, in this invention, the apertures of the plurality of first flow holes are the same.

[0016] Furthermore, in this invention, the regulating tube described above is configured as a straight tube, with the first flow hole facing the opening of the regulating tube.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] 1. Rapid differential pressure adjustment: By removing or installing a blocking component, the flow area of ​​the valve for rapid differential pressure adjustment can be quickly changed, thereby achieving rapid adjustment of the fluid differential pressure in the pipeline. The operation is simple and convenient.

[0019] 2. Excellent sealing performance: The design of the sealing ring and the tight fit between the valve disc sealing section and the mounting groove effectively improve the sealing performance of the valve with rapid differential pressure adjustment and reduce the risk of fluid leakage.

[0020] 3. High operational stability: The spring extends and retracts within the guide sleeve, and the limiting component restricts the movement of the valve disc, ensuring the stability of the valve with rapid differential pressure adjustment during operation. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a partial cross-sectional schematic diagram of the valve for rapid differential pressure adjustment according to this utility model;

[0023] Figure 2 This is a schematic diagram of the valve disc of this utility model;

[0024] Figure 3for Figure 1 Enlarged diagram of point A in the middle.

[0025] The markings and corresponding component names in the attached diagram are as follows: 1-valve body, 101-limiting component, 2-regulating pipe, 201-mounting groove, 202-sealing ring, 3-valve disc, 301-first section flow hole, 302-connecting section, 303-sealing section, 304-accommodating hole, 305-annular groove, 306-second section flow hole, 4-blocking component, 5-spring, 6-guide sleeve. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only for explaining the present utility model and are not intended to limit the present utility model. The following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the present utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Example

[0029] This embodiment provides a valve for rapid differential pressure adjustment, such as... Figures 1-3 As shown, the specific structure is described below.

[0030] Combination Figure 1 As shown, the differential pressure quick adjustment valve of this utility model embodiment mainly includes five parts: valve body 1, regulating pipe 2, valve disc 3, spring 5, and plug 4. The regulating pipe 2 is used to connect to the main water supply pipeline, and the valve body 1 cooperates with the valve disc 3 to control the opening and closing of the water circuit.

[0031] In this embodiment, combined with Figure 1As shown, a circumferential mounting groove 201 is formed along the inner wall of the regulating pipe 2 in the middle, facilitating the placement of the two valve discs 3 within the mounting groove 201. Combined with... Figure 2 As shown, the valve disc 3 comprises two parts: a connecting section 302 and a sealing section 303, which are integrally formed. The diameter of the sealing section 303 is larger than that of the connecting section 302. After installation, the edge of the sealing section 303 extends into the mounting groove 201, while the connecting section 302 is located outside the mounting groove 201.

[0032] Furthermore, in combination Figure 1 and Figure 2 As shown, multiple first-section flow holes 301 are provided on the valve disc 3, which pass through the connecting section 302 and the sealing section 303. The diameter of the first-section flow holes 301 is the same, which facilitates accurate adjustment of the flow area. The first-section flow holes 301 on the left and right valve discs 3 are horizontally aligned. The plug 4 is connected to the first-section flow holes 301 in a detachable manner, which is very convenient to use.

[0033] It should be noted that the first flow hole 301 is a threaded hole, and the plug 4 is a threaded plug. The threaded connection makes the sealing effect good and the installation and disassembly are also relatively convenient.

[0034] In this embodiment, combined with Figure 1 and Figure 3 As shown, a receiving hole 304 is provided on the end face of the connecting section 302 of the valve disc 3. The receiving holes 304 of the left and right valve discs 3 are horizontally aligned. The spring 5 is placed into the guide sleeve 6, the guide sleeve 6 is placed into the receiving hole 304, and the assembled valve disc 3 is placed into the mounting groove 201. Under the action of the spring 5, the sealing section 303 is brought into close contact with the sealing ring 202 on the side wall of the mounting groove 201.

[0035] In this embodiment, combined with Figure 1 and Figure 2 As shown, a second flow hole 306 is provided on the sealing section 303. The second flow hole 306 only penetrates the sealing section 303 and does not penetrate the connecting section 302. When the valve disc 3 is not pushed, the second flow hole 306 allows fluid to pass through.

[0036] Furthermore, in combination Figure 2 and Figure 3 As shown, an annular groove 305 is provided on the outer wall of the connecting section 302. The valve body 1 above is provided with two limiting members 101 that are respectively inserted into the two annular grooves 305. The limiting members 101 are plate-shaped, and the bottom end is arc-shaped to fit the bottom of the annular groove 305. The limiting members 101 restrict the movement of the valve disc 3, ensuring the stability of the valve with rapid differential pressure adjustment during operation.

[0037] The working principle of the differential pressure rapid adjustment valve of this utility model is as follows:

[0038] Because the regulating pipe 2 is configured as a straight pipe, and the first flow hole 301 is directly opposite the inlet of the regulating pipe 2, before installing the valve for rapid differential pressure adjustment, a suitable number of plugs 4 can be directly installed into the first flow hole 301 without disassembling the valve disc 3. This allows for faster adjustment and is very convenient to operate. Increasing the number of plugs 4 installed in the first flow hole 301 reduces the flow area of ​​the valve disc 3, thereby increasing the resistance of the fluid passing through the valve disc 3 and thus increasing the pressure exerted by the fluid on the valve disc 3. Conversely, removing some of the plugs 4 increases the flow area of ​​the valve disc 3, thereby reducing the resistance of the fluid passing through the valve disc 3 and thus reducing the pressure exerted by the fluid on the valve disc 3. The valve for rapid differential pressure adjustment can be quickly adjusted according to actual operating conditions, matching the differential pressure to the actual operating conditions and extending the service life of the equipment.

[0039] In summary, this utility model provides a valve for rapid differential pressure adjustment, comprising a valve body 1, an adjusting pipe 2 connected to a main pipeline, an installation groove 201, a valve disc 3 within the installation groove 201, a spring 5 between two valve discs 3, and two valve discs 3 having aligned first-section flow holes 301, with a plug 4 detachably connected to the first-section flow holes 301. The first-section flow holes 301 are threaded holes, and the plug 4 is a threaded plug. The valve disc 3 includes a sealing section 303 and a connecting section 302. The sealing section 303 is connected to the groove wall of the installation groove 201, and the connecting section 302 is connected to the spring 5. The sealing section 303 has a second-section flow hole 306. The connecting section 302 has receiving holes 304 for accommodating both ends of the spring 5. A guide sleeve 6 is provided within the receiving holes 304, and the spring 5 is disposed within the guide sleeve 6. The installation groove 201 has a sealing ring 202, and the sealing section 303 is connected to the sealing ring 202. The side wall of the connecting section 302 is provided with an annular groove 305, and the valve body 1 is provided with a limiting member 101 that inserts into the annular groove 305. Multiple first-section flow holes 301 have the same diameter. The regulating pipe 2 is configured as a straight pipe, with the first-section flow holes 301 directly facing the opening of the regulating pipe 2. The differential pressure quick-adjustment valve provided by this utility model has the advantages of fast adjustment speed and good performance.

[0040] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A valve for rapid differential pressure adjustment, characterized in that, The valve body (1) includes a regulating pipe (2) connected to the main pipeline. The regulating pipe (2) is provided with an installation groove (201). A valve disc (3) is provided in the installation groove (201). A spring (5) is provided between the two valve discs (3). The two valve discs (3) are provided with first flow holes (301) aligned with each other. A plug (4) is detachably connected to the first flow hole (301).

2. The valve for rapid differential pressure adjustment according to claim 1, characterized in that, The first flow hole (301) is configured as a threaded hole, and the plug (4) is configured as a threaded plug.

3. The valve for rapid differential pressure adjustment according to claim 1, characterized in that, The valve disc (3) includes a sealing section (303) and a connecting section (302). The sealing section (303) is connected to the groove wall of the mounting groove (201), and the connecting section (302) is connected to the spring (5).

4. The valve for rapid differential pressure adjustment according to claim 3, characterized in that, The sealing section (303) is provided with a second flow hole (306).

5. The valve for rapid differential pressure adjustment according to claim 3, characterized in that, The connecting section (302) is provided with receiving holes (304) for accommodating both ends of the spring (5).

6. The valve for rapid differential pressure adjustment according to claim 5, characterized in that, A guide sleeve (6) is provided inside the receiving hole (304), and the spring (5) is provided inside the guide sleeve (6).

7. The valve for rapid differential pressure adjustment according to claim 6, characterized in that, The mounting groove (201) is provided with a sealing ring (202), and the sealing section (303) is connected to the sealing ring (202).

8. The valve for rapid differential pressure adjustment according to claim 7, characterized in that, The side wall of the connecting section (302) is provided with an annular groove (305), and the valve body (1) is provided with a limiting member (101) that is inserted into the annular groove (305).

9. The valve for rapid differential pressure adjustment according to claim 1, characterized in that, The diameter of multiple first-section flow holes (301) is the same.

10. The valve for rapid differential pressure adjustment according to any one of claims 1-9, characterized in that, The regulating tube (2) is configured as a straight tube, and the first section of the flow hole (301) is directly opposite the opening of the regulating tube (2).

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