Hydrostatic test plug valve for preventing rotation of flow guide sleeve

Abstract

The utility model discloses a water pressure test plug valve capable of preventing a flow guide sleeve from rotating, and relates to the technical field of valves. The hydraulic pressure test plug valve capable of preventing the flow guide sleeve from rotating comprises a plug valve body, the plug valve body is provided with the flow guide sleeve and a fixing sleeve, the fixing sleeve is located on the upper side of the flow guide sleeve, the top of the flow guide sleeve is provided with a pressing plane, and the fixing sleeve is provided with a pressing plate abutting against the pressing plane. According to the hydraulic pressure test plug valve capable of preventing the flow guide sleeve from rotating, the pressing plate is arranged to abut against the pressing plane at the top of the flow guide sleeve, rotation of the flow guide sleeve in the hydraulic pressure test process is effectively prevented, the sealing performance and stability of the plug valve are improved, and then the accuracy of hydraulic pressure test data is ensured.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a water pressure test plug valve that prevents the flow guide sleeve from rotating. Background Technology

[0002] The hydrostatic test plug valve is used in the main steam pipeline of thermal power generating units to seal the test medium in the pipeline during the overall hydrostatic test of the unit. It is installed on the steam pipelines at the boiler superheater outlet and reheater inlet and outlet as an isolation device for static hydrostatic testing. After the hydrostatic test, the internal plug plate and support plate are removed, and a flow guide sleeve is installed to allow the pipeline to enter normal use. When a hydrostatic test is required again, the flow guide sleeve is removed, and the plug plate and support plate are reinstalled.

[0003] When the water pressure test plug valve is operating normally, a flow guide sleeve needs to be installed. The flow guide sleeve is equivalent to a pipeline. Steam runs smoothly after passing through the flow guide sleeve. The existing method of clamping the flow guide sleeve is to use a pressure plate to clamp and fix it at the top of the flow guide sleeve. This can prevent the flow guide sleeve from moving up and down, but it cannot prevent the flow guide sleeve from rotating in a circle. If the flow guide sleeve rotates in a circle, it will produce abnormal noise and affect the operation of the equipment.

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

[0005] The technical problem to be solved by this utility model is that the existing fixing method cannot prevent the guide sleeve from rotating. The purpose is to provide a water pressure test plug valve that prevents the guide sleeve from rotating. By adopting the corresponding technical means, it can prevent the guide sleeve from rotating circumferentially and ensure the normal operation of the equipment.

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

[0007] This utility model provides a water pressure test plug valve to prevent the flow guide sleeve from rotating. It includes a plug valve body, which is provided with a flow guide sleeve and a fixing sleeve. The fixing sleeve is located on the upper side of the flow guide sleeve. The top of the flow guide sleeve is provided with a pressing plane, and the fixing sleeve is provided with a pressing plate that abuts against the pressing plane.

[0008] Furthermore, in this utility model, a pressing boss is provided at the center of the bottom surface of the pressing plate described above.

[0009] Furthermore, in this utility model, the aforementioned clamping plate is provided with a screw connected to the valve blocker body, and the valve blocker body is provided with a screw hole adapted to the screw.

[0010] Furthermore, in this invention, the two rows of screws are arranged symmetrically with respect to the center of the clamping plate.

[0011] Furthermore, in this utility model, a valve cover is provided inside the aforementioned fixing sleeve.

[0012] Furthermore, in this utility model, an annular groove is provided on the side of the valve cover, and a sealing ring is fitted into the annular groove.

[0013] Furthermore, in this invention, the bottom of the aforementioned annular groove is configured as an inclined surface, and the bottom of the sealing ring is configured as an inclined portion.

[0014] Furthermore, in this utility model, the top of the valve cover is provided with four opening rings, and the top of the four opening rings is provided with a cover plate.

[0015] Furthermore, in this utility model, the cover plate described above is provided with two screws that connect to the valve cover.

[0016] Furthermore, in this utility model, the aforementioned valve body and the fixing sleeve are integrally formed.

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

[0018] 1. The water pressure test plug valve of this utility model prevents the guide sleeve from rotating by setting a clamping plate to abut against the clamping plane on the top of the guide sleeve, which effectively prevents the guide sleeve from rotating during the water pressure test, improves the sealing performance and stability of the plug valve, and thus ensures the accuracy of the water pressure test data.

[0019] 2. The clamping boss at the center of the bottom surface of the clamping plate and the two rows of screws arranged symmetrically enhance the clamping force and uniformity of the force on the guide sleeve, further improving the anti-rotation effect.

[0020] 3. The sealing ring fitted inside the annular groove on the side of the valve cover, as well as the inclined design of the bottom of the annular groove and the sealing ring, significantly improves the sealing performance between the valve cover and the fixed sleeve, reducing the possibility of liquid leakage. 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 schematic diagram of the internal structure of a water pressure test plug valve for preventing the flow guide sleeve from rotating, according to an embodiment of this utility model.

[0023] The attached diagram shows the markings and corresponding component names: 1-valve body, 2-guide sleeve, 201-pressing plane, 3-fixing sleeve, 4-pressing plate, 5-screw one, 6-valve cover, 601-ring groove, 7-sealing ring, 8-four-open ring, 9-cover plate, 10-screw two. Detailed Implementation

[0024] 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. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the utility model product is in use. These are merely for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Additionally, the appearance of terms such as "horizontal" and "vertical" does not mean that the component is required to be absolutely horizontal or vertical, but rather that it can be slightly tilted. For example, "horizontal" merely means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. 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," "connect," and "link" 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.

[0026] Example

[0027] This embodiment 1 provides a water pressure test plug valve to prevent the flow guide sleeve from rotating, such as Figure 1 As shown, the specific structure is described below.

[0028] Combination Figure 1As shown, the anti-rotation water pressure test plug valve of this embodiment mainly includes four parts: plug valve body 1, flow guide sleeve 2, fixing sleeve 3, and pressure plate 4. The plug valve body 1 and fixing sleeve 3 are integrally formed, so during installation, only the overall position needs to be ensured to be accurate; there is no need for complex connection operations between the plug valve body 1 and fixing sleeve 3, reducing installation time and potential installation errors.

[0029] The flow guide sleeve 2 is located inside the valve body 1. When installing the flow guide sleeve 2, ensure that the pressing plane 201 of the flow guide sleeve 2 faces upward and is located below the fixing sleeve 3.

[0030] Combination Figure 1 As shown, install the clamping plate 4. The bottom surface of the clamping plate 4 must be tightly abutted against the clamping plane 201 of the guide sleeve 2. Then, use screws 5 to pass through the mounting holes on the clamping plate 4 and screw them into the corresponding screw holes on the valve body 1. Tighten the two rows of screws 5 in a symmetrical manner to ensure that the clamping force of the clamping plate 4 on the guide sleeve 2 is evenly distributed, effectively restricting the rotation of the guide sleeve 2.

[0031] It should be noted that a boss is provided at the bottom of the pressure plate 4. The bottom surface of the boss abuts against the pressure plane 201, which has a better effect on the pressure plane 201 and a better effect on preventing the guide sleeve 2 from rotating.

[0032] Furthermore, in combination Figure 1 As shown, when installing the valve cover 6 and related components, first, fit the sealing ring 7 into the annular groove 601 on the side of the valve cover 6, ensuring that the inclined part at the bottom of the sealing ring 7 fits tightly against the inclined surface at the bottom of the annular groove 601. Then, install the valve cover 6 into the fixing sleeve 3. Next, install the four-opening ring 8 on the top of the valve cover 6. Finally, place the cover plate 9 on top of the four-opening ring 8, and use screws 10 to pass through the mounting holes on the cover plate 9 and screw them into the corresponding screw holes on the valve cover 6 to fix the cover plate 9 onto the valve cover 6, thus completing the installation of the entire valve.

[0033] The working principle of the water pressure test plug valve for preventing the rotation of the guide sleeve of this utility model is as follows:

[0034] In industries such as petrochemicals and power generation, hydrostatic tests are frequently required for industrial pipelines transporting various media to assess their strength and sealing performance. For example, in newly constructed boiler hot water pipeline projects, hydrostatic tests are conducted in sections after pipeline installation. In this case, the anti-rotation hydrostatic test plug valve of this invention is installed at both ends of the pipeline or at interfaces requiring closure. During the test, as the water pressure increases, the flow guide sleeve 2 is effectively restricted by the pressure plate 4 and cannot rotate, ensuring the sealing of the connection between the anti-rotation hydrostatic test plug valve and the pipeline, and accurately detecting any leaks or other problems in the pipeline.

[0035] In summary, this utility model provides a water pressure test plug valve to prevent the rotation of the guide sleeve. It includes a plug valve body 1, which has a guide sleeve 2 and a fixing sleeve 3. The fixing sleeve 3 is located above the guide sleeve 2. The top of the guide sleeve 2 has a pressing plane 201, and the fixing sleeve 3 has a pressing plate 4 that abuts against the pressing plane 201. A pressing boss is provided at the center of the bottom surface of the pressing plate 4. The pressing plate 4 has screws 5 that connect to the plug valve body 1, and the plug valve body 1 has screw holes that fit the screws 5. Two rows of screws 5 are arranged symmetrically with respect to the center of the pressing plate 4. A valve cover 6 is provided inside the fixing sleeve 3. An annular groove 601 is provided on the side of the valve cover 6, and a sealing ring 7 is fitted into the annular groove 601. The bottom of the annular groove 601 is an inclined surface, and the bottom of the sealing ring 7 is an inclined portion. A four-ring 8 is provided on the top of the valve cover 6, and a cover plate 9 is provided on the top of the four-ring 8. The cover plate 9 is provided with screws 10 that connect to the valve cover 6. The valve body 1 and the fixing sleeve 3 are integrally formed.

[0036] Therefore, the water pressure test plug valve for preventing the guide sleeve from rotating has the beneficial effect of preventing the guide sleeve 2 from rotating circumferentially and ensuring the normal operation of the equipment.

[0037] 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 hydrostatic test plug valve for preventing rotation of a fairing, characterized by, The application relates to a stop valve body (1) which is provided with a flow guide sleeve (2) and a fixing sleeve (3), the fixing sleeve (3) is located on the upper side of the flow guide sleeve (2), the top of the flow guide sleeve (2) is provided with a pressing plane (201), and the fixing sleeve (3) is provided with a pressing plate (4) which abuts against the pressing plane (201).

2. The hydrostatic test plug valve of claim 1, wherein, The bottom surface center of the pressing plate (4) is provided with a pressing convex platform.

3. The hydrostatic test plug valve of claim 1, wherein, The pressing plate (4) is provided with a screw (5) which is connected with the stop valve body (1), and the stop valve body (1) is provided with a screw hole which is matched with the screw (5).

4. The hydrostatic test plug valve of claim 3, wherein, Two rows of the screws (5) are symmetrically arranged compared with the center of the pressing plate (4).

5. The hydrostatic test plug valve of claim 1, wherein, The fixing sleeve (3) is provided with a valve cover (6).

6. The hydrostatic test plug valve of claim 5, wherein, The side edge of the valve cover (6) is provided with a ring groove (601), and the ring groove (601) is sleeved with a sealing ring (7).

7. The hydrostatic test plug valve of claim 6, wherein, The bottom of the ring groove (601) is provided with an inclined surface, and the bottom of the sealing ring (7) is provided with an inclined part.

8. The hydrostatic test plug valve of claim 6, wherein, The top of the valve cover (6) is provided with a four-open ring (8), and the top of the four-open ring (8) is provided with a cover plate (9).

9. The hydrostatic test plug valve of claim 8, wherein, The cover plate (9) is provided with a screw (10) which is connected with the valve cover (6).

10. The hydrostatic test plug valve of claim 1, wherein, The stop valve body (1) is integrally formed with the fixing sleeve (3).

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