CN214119140U

CN214119140U - Valve online maintenance structure

Info

Publication number: CN214119140U
Application number: CN202022526347.3U
Authority: CN
Inventors: 李习洪; 彭阳超; 詹小华; 马志祥
Original assignee: WUHAN DAYU VALVE CO Ltd
Current assignee: WUHAN DAYU VALVE CO Ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-09-03
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses an online maintenance structure of valve. The valve comprises a valve body and a valve shaft, wherein a sealing assembly is arranged between the valve body and the valve shaft, the valve further comprises a lengthening shaft connected with the valve shaft and a lengthening barrel sleeved outside the valve shaft, the bottom end of the lengthening barrel is detachably connected with the top end of the valve body, a driving assembly is arranged at the top end of the lengthening barrel, and the driving assembly is detachably connected with the lengthening barrel. When the valve breaks down, the valve can be detached and installed on line under the condition of not stopping water. The novel valve has the advantages of simple structure, economic process, good maintenance effect and wide application range, and all valves with valve shafts extending out of the valve body can be installed.

Description

Valve online maintenance structure

Technical Field

The utility model belongs to the technical field of the pipeline valve, concretely relates to online maintenance structure of valve axle head is applicable to the valve that all valve shafts stretch out the valve body.

Background

During operation of the valve, vibration can cause the shaft end seal to wear quickly, and leakage is caused. During maintenance, the valve is usually overhauled before being closed, then the valve is disassembled from the pipeline, and then the shaft end seal is disassembled for replacement. However, such a maintenance method requires a lot of manpower and material resources, and has many disadvantages and risks.

The traditional valve shaft end maintenance mode has the defects of water cut-off, difficulty in disassembly and assembly, high site requirement, high cost and the like.

Disclosure of Invention

The utility model aims at providing a dismantle with simple to operate, during the maintenance do not cut off water, the place requires low, low cost, long service life's valve on-line maintenance structure.

In order to realize the above-mentioned purpose, the utility model discloses a valve maintains structure on line, including valve body, valve shaft, the valve body with be provided with seal assembly between the valve shaft, valve maintains structure on line still including connecting the extension of valve shaft and the extension section of thick bamboo that the outside cover of valve shaft was established, extension bobbin end with the connection can be dismantled on the valve body top, extension bobbin top is provided with drive assembly, drive assembly with can dismantle the connection between the extension section of thick bamboo, during the valve maintains on line, dismantle and simple to operate.

Furthermore, the lengthening cylinder is I-shaped, a check ring is arranged between the driving assembly and the lengthening cylinder, a first cylinder sealing ring is arranged between the check ring and the lengthening cylinder, and a second cylinder sealing ring is arranged between the lengthening cylinder and the valve body.

Furthermore, the lengthening cylinder is connected with the retainer ring through a first connecting bolt, the lengthening cylinder is connected with the driving assembly through a second connecting bolt, and the lengthening cylinder is connected with the valve body through a third connecting bolt. If the cylinder sealing ring is worn and needs to be replaced, the online disassembly and assembly are convenient.

Furthermore, the lengthened shaft comprises a shaft section and a coaxial sleeve connected to the lower portion of the shaft section, a key groove is formed in the upper portion of the shaft section, and a radial groove is formed in the lower portion of the shaft section.

Furthermore, the lower part of the shaft section and the retainer ring at the outer side are sealed by a long shaft sealing ring arranged at the radial groove.

Therefore, a new sealing assembly is formed between the lengthening cylinder and the upper end surface and the lower end surface of the lengthening shaft, and the valve can be continuously and normally used.

Further, the upper part of the shaft section is connected with the driving assembly through a key arranged at the key slot. The driving component drives the lengthening shaft to rotate through the key, and then drives the valve to rotate.

Furthermore, a drain hole and a plug are further arranged on the lengthened cylinder, and the plug is matched with the drain hole. When in on-line maintenance, water leaked from the shaft end can be drained out in time through the drain hole. In order to avoid the water pressure at the shaft end from obstructing the installation of parts, the plug is finally installed on the drain hole after all other parts are installed.

Compare with current valve shaft end structure, the utility model has the advantages of as follows: the designed extension shaft not only replaces the function of the valve shaft in the valve, but also extends the valve shaft, so that a new sealing assembly is formed between the valve shaft and the extension barrel. Compared with the original sealing assembly, the novel sealing assembly is convenient to detach, replace and install, saves time and labor, can be detached, replaced and installed on line, does not need to stop water, greatly improves the maintenance work efficiency, and saves a large amount of manpower and material resources.

Drawings

Fig. 1 is a schematic structural diagram of an on-line valve maintenance structure.

Fig. 2 is a schematic view of the front view structure of the extension shaft of the present invention.

Fig. 3 is a schematic top view of the extension shaft of the present invention.

In the figure: the valve comprises a valve body 1, a valve shaft 2, a sealing assembly 3, an extension shaft 4 (a shaft section 4-1, a coaxial sleeve 4-2, a key groove 4-3 and a radial groove 4-4), an extension cylinder 5, a driving assembly 6, a retainer ring 7, a first cylinder sealing ring 8, a second cylinder sealing ring 9, a first connecting bolt 10, a second connecting bolt 11, a third connecting bolt 12, a long shaft sealing ring 13, a key 14, a water drainage hole 15 and a plug 16.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

Referring to fig. 1-3, an online valve maintenance structure includes a valve body 1, a valve shaft 2, a sealing assembly 3 disposed between the valve body 1 and the valve shaft 2, an extension shaft 4 connected to the valve shaft 2, and an extension tube 5 sleeved outside the valve shaft 2, wherein the bottom end of the extension tube 5 is detachably connected to the top end of the valve body 1, the top end of the extension tube 5 is provided with a driving assembly 6, and the driving assembly 6 is detachably connected to the extension tube 5.

The lengthening cylinder 5 is I-shaped, a check ring 7 is arranged between the driving component 6 and the lengthening cylinder 5, a first cylinder sealing ring 8 is arranged between the check ring 7 and the lengthening cylinder 5, and a second cylinder sealing ring 9 is arranged between the lengthening cylinder 5 and the valve body 1. The lengthening cylinder 5 is connected with the retainer ring 7 through a first connecting bolt 10, the lengthening cylinder 5 is connected with the driving assembly 6 through a second connecting bolt 11, and the lengthening cylinder 5 is connected with the valve body 1 through a third connecting bolt 12. When the cylinder sealing ring is worn, water does not need to be cut off, the valve only needs to be closed, the connecting bolt of the online maintenance structure is disassembled, the worn sealing ring is replaced, and the valve can be continuously used by reassembling the online maintenance structure.

The lengthened shaft 4 comprises a shaft section 4-1 and a coaxial sleeve 4-2 connected to the lower portion of the shaft section 4-1, a key groove 4-3 is formed in the upper portion of the shaft section 4-1, and a radial groove 4-4 is formed in the lower portion of the shaft section 4-1. The lower part of the shaft section 4-1 and the retaining ring 7 at the outer side are sealed by a long shaft sealing ring 13 arranged at the radial groove 4-4. The upper part of the shaft section 4-1 is connected with the driving component 6 through a common flat key 14 arranged at the key groove 4-3. The driving component 6 drives the lengthened shaft 4 to rotate through a common flat key 14, and then drives the whole valve to rotate. The designed extension shaft 4 extends the valve shaft 2, and replaces the function of the valve shaft 2. A new sealing assembly is formed between the lengthening cylinder 5 and the upper end surface and the lower end surface of the lengthening shaft 4, and the valve can be continuously used normally.

The lengthened cylinder 5 is also provided with a drain hole 15 with threads and a plug 16, and the plug 16 is matched with the drain hole 15, so that water leaking from the shaft end can flow out conveniently during online maintenance.

When the valve is installed, the steps are as follows:

the first step is as follows: a long shaft 4 is sleeved on the valve shaft 2, and a long shaft sealing ring 13 is installed;

the second step is that: a second cylinder sealing ring 9 and the lengthening cylinder 5 are sequentially installed, and the bottom end of the lengthening cylinder 5 is fixed with the valve body 1 through a third connecting bolt 12;

the third step: a first cylinder sealing ring 8 is arranged in the cylinder, is pressed by a retainer ring 7, and the upper left end of the lengthened cylinder 5 is fixed with the retainer ring 7 by a first connecting bolt 10;

the fourth step: a common flat key 14 is arranged at the upper part of the shaft section 4-1, a driving component 6 is arranged, and the upper right end of the lengthening cylinder 5 is fixed with the driving component 6 by a second connecting bolt 11;

the fifth step: in order to avoid the water pressure at the shaft end from obstructing the installation of the parts, after all the parts are installed, the plug 16 is finally installed on the drain hole 15.

The utility model discloses the difficult problem that need cut off the water when can solving the valve maintenance realizes dismantling on line, changing and installing, need not to cut off the water, has greatly improved maintenance work efficiency, has reduced maintenance duration, has saved a large amount of manpowers, material resources. And simultaneously, the utility model discloses simple structure, technology economy, maintenance are effectual, and application scope is wide, is suitable for the valve that all valve shafts stretched out the valve body.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides an online maintenance structure of valve, includes valve body (1), valve shaft (2), valve body (1) with be provided with seal assembly (3) between valve shaft (2), its characterized in that: the valve on-line maintenance structure further comprises a lengthening shaft (4) connected with the valve shaft (2) and a lengthening tube (5) sleeved outside the valve shaft (2), the bottom end of the lengthening tube (5) is detachably connected with the top end of the valve body (1), a driving assembly (6) is arranged at the top end of the lengthening tube (5), and the driving assembly (6) is detachably connected with the lengthening tube (5).

2. The valve on-line servicing structure of claim 1, wherein: the extension cylinder (5) is I-shaped, a check ring (7) is arranged between the driving assembly (6) and the extension cylinder (5), a first cylinder sealing ring (8) is arranged between the check ring (7) and the extension cylinder (5), and a second cylinder sealing ring (9) is arranged between the extension cylinder (5) and the valve body (1).

3. The valve on-line servicing structure of claim 2, characterized in that: the valve is characterized in that the lengthening cylinder (5) is connected with the retainer ring (7) through a first connecting bolt (10), the lengthening cylinder (5) is connected with the driving assembly (6) through a second connecting bolt (11), and the lengthening cylinder (5) is connected with the valve body (1) through a third connecting bolt (12).

4. The valve on-line servicing structure of claim 1, wherein: the lengthened shaft (4) comprises a shaft section (4-1) and a coaxial sleeve (4-2) connected to the lower portion of the shaft section (4-1), a key groove (4-3) is formed in the upper portion of the shaft section (4-1), and a radial groove (4-4) is formed in the lower portion of the shaft section (4-1).

5. The valve on-line servicing structure of claim 4, characterized in that: the lower part of the shaft section (4-1) is sealed with the retaining ring (7) at the outer side through a long shaft sealing ring (13) arranged at the radial groove (4-4).

6. The valve on-line servicing structure of claim 4, characterized in that: the upper part of the shaft section (4-1) is connected with the driving component (6) through a key (14) arranged at the key groove (4-3).

7. The valve on-line servicing structure of any one of claims 1-6, wherein: the lengthening cylinder (5) is also provided with a drain hole (15) and a plug (16), and the plug (16) is matched with the drain hole (15).