CN219854393U - Accident distributing valve flip-chip tool - Google Patents

Abstract

The utility model provides an accident pressure distribution valve inverted tool which comprises a transfer rail, a jacking device and a clamping sleeve device, wherein the transfer rail is arranged on an accident pressure distribution valve support, the jacking device comprises a supporting plate, a through hole matched with a tool screw is formed in the supporting plate, an avoidance hole is formed in the center of the supporting plate, the tool screw comprises a screw head, one end of the screw head is provided with a screw rod, an external thread is arranged on the outer side of the screw head, the screw rod penetrates through the through hole of the supporting plate and is fixed through a limiting nut, the clamping sleeve device comprises a clamping sleeve nut in split arrangement, a clamping groove matched with the screw head is formed in the inner side of the clamping sleeve nut, and the clamping sleeve nut is connected through a bolt. The tool can be used for dismounting the valve core and the end cover from the lower part under the condition that the main oil supply pipeline is not dismounted, so that the lifting and turning operation is avoided, and the dismounting efficiency is improved.

Description

Accident distributing valve flip-chip tool

Technical Field

The utility model relates to the field of disassembly and assembly of accident pressure distribution valves, in particular to an accident pressure distribution valve flip-chip tool.

Background

The accident distributing valve is a core component of a speed regulator of a hydroelectric generating set of a hydropower station, plays roles of controlling accident shutdown, closing guide vanes forcedly and avoiding accident expansion in the set, and the maintenance quality directly influences whether the set can normally operate.

The accident pressure distribution valve of a certain power station is of an inverted structure and mainly comprises a valve body, a valve core, an end cover and a spring, wherein the valve body, the valve core, the end cover and the spring are arranged on a bracket (see fig. 1 and 2) which is about 1.5m away from the ground, and the end cover and the valve core are required to be disassembled and assembled during maintenance so as to replace the seal between the valve core and the valve body.

The traditional overhaul mode is as follows: setting up an accident pressure distribution valve maintenance scaffold, dismantling a main oil supply pipeline connected with the accident pressure distribution valve, dismantling the whole accident pressure distribution valve to be lifted to the ground, turning over the whole accident pressure distribution valve, disassembling and maintaining the accident pressure distribution valve, and reversely and sequentially returning to the installation. The scaffold operation belongs to high-altitude operation, the lifting and turning operation of the accident distributing valve belongs to high-risk operation, and the main oil supply pipeline is disassembled and assembled to increase the workload and quality risk of the operation; meanwhile, if the unit operates, the accident distributing valve is required to be salvaged when faults occur, and the traditional operation mode is more in disassembling parts, so that the risk of prolonging the construction period is necessarily brought. Therefore, an accident distributing valve flip-chip tool is needed to avoid the problems.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an accident distributing valve flip-chip tool, which can detach and mount a valve core and an end cover from the lower part under the condition of not detaching and mounting a main oil supply pipeline, so that lifting and turning operations are avoided, and the detaching and mounting efficiency is improved.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an accident distributing valve flip-chip instrument, includes transportation track, jacking device and cutting ferrule device, and transportation track sets up on accident distributing valve support, and jacking device includes the layer board, is equipped with on the layer board with tool screw rod complex through-hole, and the layer board center is equipped with dodges the hole, and tool screw rod includes the screw rod head, and screw rod head one end is equipped with the screw rod, and the screw rod head outside is equipped with the external screw thread, and the screw rod passes through the stop nut after passing the through-hole of layer board and fixes, cutting ferrule device includes the cutting ferrule nut of split setting, and the cutting ferrule nut inboard is equipped with the clamping groove with screw rod head adaptation, and the cutting ferrule nut passes through the bolt and connects.

In the preferred scheme, transfer track includes first track and second track, connects through connecting plate and bolt between first track and the second track, and second track tip is equipped with vertical pole, and vertical pole inserts in the support frame.

In the preferred scheme, be equipped with the mounting bracket on the accident distributing valve support, transport the track setting on the mounting bracket, first track both ends downside is equipped with spacing horizontal pole.

In the preferred scheme, the layer board bottom is equipped with two sets of limit stop, and limit stop sets up in transfer track both sides.

In the preferred scheme, be equipped with a plurality of arc holes on the layer board, the arc hole is followed and is dodged the hole and distribute.

In the preferred scheme, one end of the screw far away from the screw head is provided with a square head.

In the preferred scheme, screw head and screw rod pass through threaded connection, and the screw head lower extreme is equipped with countersunk head hexagonal groove.

In the preferred scheme, anti-skid patterns are arranged in the clamping grooves.

The utility model provides an accident pressure distribution valve flip-chip tool, which has the following beneficial effects:

1. the tool can be used for disassembling and assembling the valve core and the end cover from the lower part under the condition that a large number of oil supply pipelines are not disassembled and assembled, so that the construction period, the manpower resource waste and the oil leakage risk caused by disassembling and assembling the main oil supply pipeline are avoided.

2. The fixture can avoid the scaffold from being assembled and disassembled, reduce the demands on the scaffold of special operators, and avoid the risk of high-altitude operation.

3. By using the tool, lifting and turning operations can be avoided, and high risks brought by lifting operations are avoided.

Drawings

The utility model is further described below with reference to the accompanying drawings and examples of implementation:

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the installation of a transfer rail;

FIG. 3 is a schematic view of the structure of the tool screw;

FIG. 4 is a schematic structural view of a pallet;

FIG. 5 is a schematic view of the ferrule arrangement;

FIG. 6 is a schematic view of a first track;

FIG. 7 is a schematic view of a second track;

FIG. 8 is a schematic structural view of a connection plate;

in the figure: the transfer rail 1, the accident distributing valve support 2, the supporting plate 3, the tool screw 4, the limit nut 5, the clamping sleeve nut 6, the supporting frame 7, the mounting frame 8, the end cover 9, the spring 10, the valve body 11, the valve core 12, the first rail 101, the second rail 102, the connecting plate 103, the vertical rod 104, the limit cross rod 105, the through hole 301, the avoiding hole 302, the limit stop 303, the arc-shaped hole 304, the screw head 401, the screw 402, the square head 403, the countersunk hexagonal groove 404 and the clamping groove 601.

Detailed Description

As shown in fig. 1-5, an accident distributing valve flip-chip tool comprises a transfer rail 1, a jacking device and a clamping sleeve device, wherein the transfer rail 1 is arranged on an accident distributing valve bracket 2, and the transfer rail 1 is used for transferring an end cover and a valve core out and in.

In this embodiment, as shown in fig. 6 to 8, the transferring rail 1 includes a first rail 101 and a second rail 102, where the first rail 101 is set into two groups, the specific number of the first rails is determined according to the installation required length, the first rails 101 and the second rails 102 are connected by a connecting plate 103 and bolts, a vertical rod 104 is disposed at an end of the second rail 102, and the vertical rod 104 is inserted into the supporting frame 7.

Be equipped with mounting bracket 8 on the accident distributing valve support 2, transfer track 1 sets up on mounting bracket 8, and transfer track 1 wholly places on mounting bracket 8, accomplishes the installation of transferring track 1, and the vertical pole 104 of second track 102 tip inserts in the support frame 7, realizes the tip support to transferring track 1.

The lower sides of the two ends of the first track 101 are provided with limiting crossbars 105. The transfer rail 1 can be prevented from moving at will on the mounting frame 8 by the provision of the limit rail 105.

The jacking device comprises a supporting plate 3, a through hole 301 matched with a tool screw 4 is formed in the supporting plate 3, an avoidance hole 302 is formed in the center of the supporting plate 3, and the avoidance hole 302 is used for avoiding a pipe joint below an end cover, an indication rod on a valve core and an adjusting screw. The supporting plate 3 can be used for supporting and lifting an end cover and a valve core, removing the valve core and transferring the end cover and the valve core.

Preferably, two groups of limit stops 303 are arranged at the bottom of the supporting plate 3, and the limit stops 303 are arranged at two sides of the transfer rail 1. By providing the limit stopper 303, the pallet 3 can be prevented from moving left and right on the transfer rail 1, and can be moved in the longitudinal direction of the transfer rail 1.

Preferably, the supporting plate 3 is provided with a plurality of arc holes 304, and the arc holes 304 are distributed along the avoiding holes 302. The arcuate aperture 304 is used to pull the valve spool from the valve body using a lead screw when the valve spool cannot fall by its own weight,

the tool screws 4 are arranged into four groups and used for disassembling and assembling the end cover and the valve core. The tool screw 4 comprises a screw rod 402 arranged at one end of a screw rod head 401, external threads are arranged on the outer side of the screw rod head 401, the screw rod head 401 is matched with an installing bolt hole of an end cover of an accident pressure distribution valve, the tool screw 4 can be fixed on the valve body 11, the screw rod 402 penetrates through a through hole 301 of the supporting plate 3 and then is fixed through a limit nut 5, the limit nut 5 is a hexagon nut, and the limit nut 5 is arranged on the lower side of the supporting plate 3 and supports the supporting plate 3.

Preferably, the end of the screw 402 away from the screw head 401 is provided with a square head 403. Facilitating the screwing in and unscrewing of the screw 402.

Preferably, the screw head 401 is connected with the screw 402 through threads, and a countersunk hexagonal groove 404 is formed in the lower end of the screw head 401. By providing the countersunk hexagonal grooves 404, the screw head 401 is convenient to install.

The clamping sleeve device comprises a clamping sleeve nut 6 which is arranged in a split mode, a clamping groove 601 which is matched with the screw head 401 is formed in the inner side of the clamping sleeve nut 6, and the clamping sleeve nut 6 is connected through bolts. When the valve core is used for dismantling the end cover, the valve core is prevented from falling.

Anti-skid patterns are arranged in the clamping groove 601. When the ferrule nut 6 is fastened to the outside of the screw head 401, the connection strength of the ferrule nut 6 and the screw head 401 is improved.

The disassembly process of the accident distributing valve comprises the following steps:

1) The first rail 101 and the second rail 102 are installed on the accident distributing valve bracket 2, the middle is connected with the accident distributing valve bracket by using a connecting plate 103 and bolts, the supporting frame 7 is installed at the tail end of the second rail 102, and the installation of the transferring rail is completed.

2) Symmetrically removing two of the bolts of the end cover of the accident pressure distribution valve, installing a supporting plate 3, a tool screw 4 and a limit nut 5, removing the remaining two of the bolts of the end cover of the accident pressure distribution valve, and installing the other two sets of tool screws 4; the end cover 9 is slowly dropped by about 50mm by using the limit nut 5, and the clamping sleeve nut 6 is arranged on the screw head 401 between the end cover 9 and the valve core 12 to prevent the valve core from dropping.

3) And (5) continuing loosening the limit nut, slowly dropping the end cover until the end cover is connected with the supporting plate 3 to fall onto the transfer track 1 together, and taking out the spring 10.

4) The screw 402 of the tool screw 4 is removed, the screw head 401 remains stationary, the end cap is carried out together with the pallet 3 through the transfer rail 1,

5) Reinstalling the pallet 3 and the screw 402 of the tool screw 4 on the screw head 401, removing the clamping sleeve nut 6, and dropping the valve core on the pallet 3; if the valve core can not fall down by self weight, an M10 screw rod is arranged between the supporting plate 3 and the valve core 12 to pull out the valve core 12.

6) The limit nut 5 is loosened continuously, the valve core 12 is slowly dropped down until the valve core 12 is connected with the supporting plate 3 and falls onto the transfer track 1 together.

7) The screw 402 of the tool screw 4 is removed, the screw head 401 remains stationary, and the valve cartridge is carried out together with the pallet 3 through the transfer rail 1.

The process of resetting the accident pressure distribution valve comprises the following steps:

1) The valve core 12 is placed on the supporting plate 3, the valve core 12 is conveyed to the position right below the accident distributing valve through the transferring track 1, the screw 402 and the limit nut 5 are installed, the valve core 12 is slowly pressed into the valve body 11 through rotating the limit nut 5, and whether the O-shaped sealing ring is cut or not is checked.

2) Installing a clamping sleeve nut 6 to prevent the valve core 12 from falling, and dismantling the screw 402 and the supporting plate 3;

3) The end cover 9 is placed on the supporting plate 3, the end cover 9 is conveyed to the position right below the accident distributing valve through the transferring track 1, the spring 10 is installed back, the screw 402 is installed, the end cover 9 is slowly lifted up through rotating the limit nut 5 until the distance between the upper side of the end cover 9 and the valve body 11 is about 50mm, at the moment, the valve core 12 cannot automatically fall down due to compression of the spring 10, and the clamping sleeve nut 6 is detached; the limit nut 5 is continuously rotated to press the end cover 9 and the O-shaped sealing ring into the valve body 11, and whether the O-shaped sealing ring is cut or not is checked.

4) After the end cover 9 is installed in place, removing the two symmetrical tool screws 4, reinstalling end cover bolts, removing the rest tool screws 4, and reinstalling all end cover bolts; if the screw head 401 is not taken out well, the inner hexagonal wrench is used for loosening;

5) The transfer rail 1 is removed.

The tool can be used for disassembling and assembling the valve core and the end cover from the lower part under the condition of not moving the main oil supply pipeline, so that the construction period, the manpower resource waste and the oil leakage risk caused by disassembling and assembling the main oil supply pipeline are avoided; the fixture can avoid the construction of a scaffold, reduce the demands on the construction of the scaffold by special operators, and avoid the risk of high-altitude operation; by using the tool, lifting and turning operations can be avoided, and high risks caused by lifting operations are avoided.

Claims (8)

1. An accident distributing valve flip-chip instrument which characterized in that: including transporting track (1), jacking device and cutting ferrule device, transport track (1) sets up on accident distributing valve support (2), and jacking device includes layer board (3), is equipped with on layer board (3) with tool screw rod (4) complex through-hole (301), layer board (3) center is equipped with dodges hole (302), tool screw rod (4) including screw head (401), screw head (401) one end is equipped with screw rod (402), and screw head (401) outside is equipped with the external screw thread, and screw rod (402) pass behind through-hole (301) of layer board (3) and pass through stop nut (5) fixed, cutting ferrule device is including cutting ferrule nut (6) that the split set up, cutting ferrule nut (6) inboard be equipped with screw head (401) adaptation clamping groove (601), cutting ferrule nut (6) are connected through the bolt.

2. The accident pressure valve flip-chip tool according to claim 1, wherein: the transfer rail (1) comprises a first rail (101) and a second rail (102), the first rail (101) and the second rail (102) are connected through a connecting plate (103) and bolts, a vertical rod (104) is arranged at the end part of the second rail (102), and the vertical rod (104) is inserted into the supporting frame (7).

3. An accident pressure valve flip-chip tool according to claim 2, wherein: the emergency pressure distribution valve is characterized in that an installation frame (8) is arranged on the emergency pressure distribution valve support (2), the transfer rail (1) is arranged on the installation frame (8), and limiting cross bars (105) are arranged at the lower sides of two ends of the first rail (101).

4. The accident pressure valve flip-chip tool according to claim 1, wherein: two groups of limit stops (303) are arranged at the bottom of the supporting plate (3), and the limit stops (303) are arranged on two sides of the transfer track (1).

5. The accident pressure valve flip-chip tool according to claim 1, wherein: a plurality of arc-shaped holes (304) are formed in the supporting plate (3), and the arc-shaped holes (304) are distributed along the avoiding holes (302).

6. The accident pressure valve flip-chip tool according to claim 1, wherein: one end of the screw rod (402) far away from the screw rod head (401) is provided with a square head (403).

7. The accident pressure valve flip-chip tool according to claim 1, wherein: the screw head (401) is connected with the screw (402) through threads, and a countersunk hexagonal groove (404) is formed in the lower end of the screw head (401).

8. The accident pressure valve flip-chip tool according to claim 1, wherein: anti-skid patterns are arranged in the clamping grooves (601).