High-pressure valve for power station

Abstract

The utility model discloses a high-pressure valve for a power station, which belongs to the technical field of valves and comprises a pipeline body, a valve main body is arranged on one side of the pipeline body, a valve switching mechanism is arranged at the upper end of the valve main body, a connecting channel is arranged in the valve main body, and an external pipeline body is arranged on the other side of the pipeline body. The pipeline body is fixedly connected with the external pipeline body through an external pipeline connecting mechanism; the valve opening and closing mechanism comprises a sealing plate structure, a telescopic rod, a screw rod, a rotating handle and a limiting assembly, the screw rod is arranged in the valve body, and the rotating handle is arranged at the upper end of the screw rod. The stability of the screw rod in the rotating process can be improved, and the sealing performance after the valve is closed can be improved by arranging a sealing plate structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a high-pressure valve for power stations. Background Art

[0002] High-pressure valves for power stations are valves designed to meet the special requirements of power facilities such as thermal power stations. They can withstand extremely high pressures and temperatures.

[0003] Chinese patent application No. 202220979717.5 discloses a high-pressure valve for power stations, wherein the valve cover is provided with an oil storage plate for placing lubricating oil, and the lubricating oil can lubricate the valve stem along the oil channel opened on the valve cover, and a slide plate slidably mounted on the oil storage plate is slidably connected to the valve stem, and a first elastic member is provided at the lower part of the slide plate, and a pressure plate slidably mounted to the valve stem is provided at the movable end of the first elastic member, and a handwheel is detachably connected to the valve stem. The beneficial effects of the utility model are as follows: the handwheel is turned, and the handwheel drives the valve stem to rotate, and the handwheel is driven downward during the rotation of the valve stem, and the handwheel drives the first elastic member downward through the slide plate, and the first elastic member drives the pressure plate downward, and the pressure plate applies pressure to the lubricating oil, so that the lubricating oil flows faster, so that the valve stem can be lubricated quickly and well, and the efficiency of lubricating the valve stem is improved.

[0004] Although the above-mentioned patent realizes the use of the valve, the overall fixed sealing of the valve closing structure is relatively poor, and the stability of the adjustment process is relatively poor; the connection sealing between the valve and the external pipeline is relatively poor. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a high-pressure valve for a power station, which has the characteristics of being easy to open and close the valve and having better sealing performance between the valve and the external pipeline.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure valve for a power station, comprising a pipeline body, a valve body is arranged on one side of the pipeline body, a valve switch mechanism is arranged on the upper end of the valve body, a connecting channel is opened inside the valve body, an external pipeline body is arranged on the other side of the pipeline body, and the pipeline body and the external pipeline body are fixedly connected by the external pipeline connecting mechanism; the valve switch mechanism comprises a sealing plate structure, a telescopic rod, a screw, a turning handle and a limit assembly, a screw is arranged inside the valve body, a turning handle is arranged on the upper end of the screw, a limit assembly is arranged on the upper end surface of the screw, a telescopic rod is threadedly connected to the lower end of the screw, and a sealing plate structure is arranged at the lower end of the telescopic rod.

[0007] Preferably, the sealing plate structure includes a sealing gasket, a sealing plate body and screws, the sealing plate body is provided at the lower end of the telescopic rod, sealing gaskets are provided on both sides of the sealing plate body, and the sealing gasket and the sealing plate body are fixedly connected by screws.

[0008] Preferably, the valve switch mechanism further comprises a limit groove and a limit block, the inner wall of the valve body is provided with a limit block, and the side of the telescopic rod is provided with a limit groove corresponding to the limit block.

[0009] Preferably, the limit assembly includes a mounting block, a supporting oblique rod, a rotating groove and a rotating block, a supporting oblique rod is provided at the upper end of the valve body, a mounting block is provided at the upper end of the supporting oblique rod, a rotating block is provided inside the mounting block on the surface of the screw rod, and a rotating groove corresponding to the rotating block is opened inside the mounting block.

[0010] Preferably, the external pipe connection mechanism includes a sealing ring, a sealing groove, flange one, bolts and flange two. Flange one is provided on the other side of the pipe body, and flange two is provided on the other side of the external pipe body. The connection between flange one and flange two is fixedly connected by bolts, a sealing ring is provided at the connection between flange one and flange two, and sealing grooves corresponding to the sealing rings are provided on the sides of flange one and flange two.

[0011] Preferably, the external pipe connection mechanism further comprises an annular protrusion and a through hole, a plurality of groups of annular protrusions are arranged on the surface of the sealing ring, and a through hole is opened inside the annular protrusion.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a valve switch mechanism, which can facilitate the opening and closing of the valve so as to use the valve. By providing a limit position component, the stability of the screw rotation process can be improved. By providing a sealing plate structure, the sealing performance of the valve after closing can be improved.

[0014] 2. The utility model is provided with an external pipe connection mechanism, which can facilitate the connection and fixation between the pipe body and the external pipe body, and the overall sealing after fixation is relatively poor. By providing an annular protrusion on the side of the sealing ring, the reliability of the sealing ring after installation can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a cutaway view of the valve switch mechanism of the utility model;

[0017] Figure 3 It is an enlarged view of the limit assembly of the utility model;

[0018] Figure 4 It is a three-dimensional diagram of the sealing plate structure of the utility model;

[0019] Figure 5 It is a three-dimensional diagram of the external pipeline connection mechanism of the utility model;

[0020] In the figure: 1. pipeline body; 2. external pipeline body; 3. external pipeline connection mechanism; 31. sealing ring; 32. sealing groove; 33. flange one; 34. bolt; 35. annular protrusion; 36. through hole; 37. flange two; 4. valve body; 5. valve switch mechanism; 51. sealing plate structure; 511. sealing gasket; 512. sealing plate body; 513. screw; 52. limiting groove; 53. telescopic rod; 54. limiting block; 55. screw; 56. turning handle; 57. limiting assembly; 571. mounting block; 572. supporting diagonal rod; 573. rotating groove; 574. rotating block; 6. connecting channel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figure 1-5 The utility model provides the following technical solutions: a high-pressure valve for a power station, comprising a pipeline body 1, a valve body 4 is arranged on one side of the pipeline body 1, a valve switch mechanism 5 is arranged on the upper end of the valve body 4, a connecting channel 6 is opened inside the valve body 4, an external pipeline body 2 is arranged on the other side of the pipeline body 1, and the pipeline body 1 and the external pipeline body 2 are fixedly connected by an external pipeline connecting mechanism 3; the valve switch mechanism 5 comprises a sealing plate structure 51, a telescopic rod 53, a screw 55, a turning handle 56 and a limiting assembly 57, a screw 55 is arranged inside the valve body 4, a turning handle 56 is arranged on the upper end of the screw 55, a limiting assembly 57 is arranged on the upper end surface of the screw 55, a telescopic rod 53 is threadedly connected to the lower end of the screw 55, and a sealing plate structure 51 is arranged on the lower end of the telescopic rod 53.

[0024] Specifically, the sealing plate structure 51 includes a sealing gasket 511, a sealing plate body 512 and screws 513. The sealing plate body 512 is disposed at the lower end of the telescopic rod 53, and sealing gaskets 511 are disposed on both sides of the sealing plate body 512. The sealing gasket 511 and the sealing plate body 512 are fixedly connected by screws 513.

[0025] By adopting the above technical solution, when the valve body 4 is closed, the handle 56 is turned, and the rotation of the handle 56 drives the screw 55 to rotate, and the rotation of the screw 55 drives the telescopic rod 53 to descend, and the descent of the telescopic rod 53 drives the sealing plate structure 51 to descend, thereby blocking the connecting channel 6, thereby achieving the sealing work of the valve body 4, and at the same time, the sealing gasket 511 is installed on the side of the sealing plate body 512 by the screw 513, thereby improving the sealing effect of the connecting channel 6.

[0026] Specifically, the valve switch mechanism 5 further includes a limit groove 52 and a limit block 54. The limit block 54 is disposed on the inner wall of the valve body 4, and a limit groove 52 corresponding to the limit block 54 is provided on the side of the telescopic rod 53.

[0027] By adopting the above technical solution, when the screw rod 55 descends, the limiting block 54 slides inside the limiting groove 52 on the side of the telescopic rod 53, thereby improving the stability of the telescopic rod 53 during the sliding process.

[0028] Specifically, the limit assembly 57 includes a mounting block 571, a supporting inclined rod 572, a rotating groove 573 and a rotating block 574. The upper end of the valve body 4 is provided with a supporting inclined rod 572, and the upper end of the supporting inclined rod 572 is provided with a mounting block 571. The surface of the screw rod 55 is located inside the mounting block 571 and a rotating block 574 is provided. The mounting block 571 is provided with a rotating groove 573 corresponding to the rotating block 574.

[0029] By adopting the above technical solution, after the mounting block 571 is installed and fixed by supporting the inclined rod 572, when the rotating screw 55 rotates, it will drive the rotating block 574 to rotate inside the rotating groove 573, thereby improving the stability of the screw 55 during rotation.

[0030] When the present embodiment is in use, when the valve body 4 is closed, the turning handle 56 is turned, and the turning handle 56 drives the screw 55 to rotate, and the screw 55 drives the telescopic rod 53 to descend, and the telescopic rod 53 descends and drives the sealing plate structure 51 to descend, thereby blocking the connecting channel 6, thereby achieving the sealing work of the valve body 4, and at the same time, the sealing gasket 511 is installed on the side of the sealing plate body 512 by the screw 513, so as to improve the sealing effect of the connecting channel 6, and when the screw 55 descends, the limit block 54 will slide inside the limit groove 52 on the side of the telescopic rod 53, thereby improving the stability of the sliding process of the telescopic rod 53, and after the mounting block 571 is installed and fixed by the supporting inclined rod 572, when the screw 55 is rotated, it will drive the rotating block 574 to rotate inside the rotating groove 573, thereby improving the stability of the rotation process of the screw 55.

[0031] Example 2

[0032] The difference between this embodiment and the embodiment 1 is that: the external pipe connection mechanism 3 includes a sealing ring 31, a sealing groove 32, a flange 1 33, bolts 34 and a flange 2 37, the other side of the pipe body 1 is provided with a flange 1 33, the other side of the external pipe body 2 is provided with a flange 2 37, the connection between the flange 1 33 and the flange 2 37 is fixedly connected by bolts 34, the connection between the flange 1 33 and the flange 2 37 is provided with a sealing ring 31, and the sides of the flange 1 33 and the flange 2 37 are provided with sealing grooves 32 corresponding to the sealing ring 31,

[0033] By adopting the above technical solution, the sealing ring 31 is placed inside the side of the sealing groove 32, and then the flange 1 33 and the flange 2 37 are connected and fixed by bolts 34, thereby improving the connection sealing between the pipeline body 1 and the external pipeline body 2.

[0034] Specifically, the external pipe connection mechanism 3 further includes an annular protrusion 35 and a through hole 36. The surface of the sealing ring 31 is provided with a plurality of annular protrusions 35, and the interior of the annular protrusion 35 is provided with a through hole 36.

[0035] By adopting the above technical solution, an annular protrusion 35 is provided on the side of the sealing ring 31 , and a through hole 36 is opened inside the annular protrusion 35 , thereby improving the firmness of the sealing ring 31 after installation.

[0036] When this embodiment is in use, the sealing ring 31 is placed inside the side of the sealing groove 32, and then the flange 1 33 and the flange 2 37 are connected and fixed by bolts 34, thereby improving the connection sealing between the pipeline body 1 and the external pipeline body 2. By providing an annular protrusion 35 on the side of the sealing ring 31 and opening a through hole 36 inside the annular protrusion 35, the firmness of the sealing ring 31 after installation is improved.

[0037] The working principle and use process of the utility model are as follows: when the utility model is used, when the valve body 4 is closed, the turning handle 56 is turned, and the turning handle 56 rotates to drive the screw rod 55 to rotate, and the screw rod 55 rotates to drive the telescopic rod 53 to descend, and the telescopic rod 53 descends to drive the sealing plate structure 51 to descend, thereby blocking the connecting channel 6, thereby achieving the sealing work of the valve body 4, and at the same time, the sealing gasket 511 is installed on the side of the sealing plate body 512 through the screw 513, thereby improving the sealing effect of the connecting channel 6, and when the screw rod 55 descends, the limit block 54 slides inside the limit groove 52 on the side of the telescopic rod 53, thereby improving the telescopic rod 53. In order to improve the stability of the sliding process of the retractable rod 53, after the mounting block 571 is installed and fixed by supporting the inclined rod 572, the rotating screw 55 will drive the rotating block 574 to rotate inside the rotating groove 573, thereby improving the stability of the screw 55 during rotation; the sealing ring 31 is placed inside the side of the sealing groove 32, and then the flange 1 33 and the flange 2 37 are connected and fixed by bolts 34, thereby improving the connection sealing between the pipeline body 1 and the external pipeline body 2, and by providing an annular protrusion 35 on the side of the sealing ring 31 and opening a through hole 36 inside the annular protrusion 35, the firmness of the sealing ring 31 after installation is improved.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure valve for a power station, comprising a pipeline body, characterized in that: A valve body is arranged on one side of the pipeline body, a valve switch mechanism is arranged on the upper end of the valve body, a connecting channel is opened inside the valve body, an external pipeline body is arranged on the other side of the pipeline body, and the pipeline body and the external pipeline body are fixedly connected by the external pipeline connecting mechanism; the valve switch mechanism includes a sealing plate structure, a telescopic rod, a screw, a turning handle and a limit assembly, a screw is arranged inside the valve body, a turning handle is arranged on the upper end of the screw, a limit assembly is arranged on the upper end surface of the screw, a telescopic rod is threadedly connected to the lower end of the screw, and a sealing plate structure is arranged at the lower end of the telescopic rod.

2. A high pressure valve for power station according to claim 1, characterized in that: The sealing plate structure comprises a sealing gasket, a sealing plate body and screws. The sealing plate body is arranged at the lower end of the telescopic rod, and sealing gaskets are arranged on both sides of the sealing plate body. The sealing gasket and the sealing plate body are fixedly connected by screws.

3. A high pressure valve for power station according to claim 1, characterized in that: The valve switch mechanism also includes a limit groove and a limit block. The limit block is arranged on the inner wall of the valve body, and the side of the telescopic rod is provided with a limit groove corresponding to the limit block.

4. A high pressure valve for power station according to claim 1, characterized in that: The limit assembly includes a mounting block, a supporting oblique rod, a rotating groove and a rotating block. The upper end of the valve body is provided with a supporting oblique rod, the upper end of the supporting oblique rod is provided with a mounting block, the surface of the screw rod is located inside the mounting block and a rotating block is provided inside the mounting block, and a rotating groove corresponding to the rotating block is opened inside the mounting block.

5. A high pressure valve for power station according to claim 1, characterized in that: The external pipe connection mechanism includes a sealing ring, a sealing groove, a flange plate 1, bolts and a flange plate 2. Flange plate 1 is arranged on the other side of the pipe body, and flange plate 2 is arranged on the other side of the external pipe body. The connection between flange plate 1 and flange plate 2 is fixedly connected by bolts. A sealing ring is arranged at the connection between flange plate 1 and flange plate 2. Sealing grooves corresponding to the sealing ring are opened on the sides of flange plate 1 and flange plate 2.

6. A high pressure valve for power station according to claim 5, characterized in that: The external pipe connection mechanism also includes an annular protrusion and a through hole. The surface of the sealing ring is provided with multiple groups of annular protrusions, and the interior of the annular protrusion is provided with a through hole.

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