CN205009164U - Novel trade valve ware - Google Patents

Abstract

The utility model discloses a novel valve changer, which comprises an adapting device, a blocking device and a driving device; Adaptive connection with the valve that needs to be replaced; the blocking device includes an upper support cylinder, a lower support cylinder, a rubber cylinder, a screw, a support cylinder upper cover, a tray, a support claw and a pin shaft, and the blocking device is used to seal the valve that needs to be replaced The upstream gas branch pipe; the driving device includes an inner rod, an outer rod and a wrench rod, and the driving device is used to drive the blocking device to complete the blocking and unblocking actions. The novel valve changer of the utility model can effectively save the longitudinal length inside the plugging device, and is suitable for the operation of replacing the valve when the gas branch pipe is relatively short.

Description

A new type of valve changer

technical field

The utility model relates to a device for replacing and/or maintaining valves in gas pipelines, in particular to a valve changing device suitable for replacing and/or maintaining valves on shorter gas branch pipes.

Background technique

The utility model is a Chinese patent application number 201520328923.X, and the name is a further improvement of a valve changer.

In the above-mentioned patent application, the supporting claws for supporting in the natural gas pipeline are located on the upper part of the rubber tube, and this structure requires that the length of the gas pipeline that needs to be replaced and/or repaired should be long enough (to be able to accommodate the total length of the supporting claws and the rubber tube) prevail), so it is not suitable for gas pipelines, especially short gas branch pipes.

Utility model content

In order to overcome the technical defect that the supporting claws of the above-mentioned patent application are located on the upper part of the rubber cylinder, causing the plugging device to be too long, it is not suitable for replacing and/or maintaining the valve when the gas branch pipe is short, the utility model provides a new type of valve replacement The supporting claw of the new valve changer is located at the lower end of the rubber tube, and the supporting claw of the new valve changing device can be supported on the bottom wall or side wall of the gas branch pipe, so the space inside the gas branch pipe is saved.

A novel valve changer, including an adapter device, a blocking device and a driving device;

The adapter device includes an outer cylinder, an upper cover of the outer cylinder and an adapter connector. The upper end of the outer cylinder is sealed and connected to the upper cover of the outer cylinder. A first through hole is opened in the middle of the upper cover of the outer cylinder. Connecting piece, the adapter connecting piece is used to adapt and connect with the valve that needs to be replaced;

The blocking device includes an upper support cylinder, a lower support cylinder, a rubber cylinder, a lead screw, a support cylinder upper cover, a tray, a support claw and a pin shaft; the upper support cylinder and the lower support cylinder are slidingly connected and the lower support cylinder is located on the upper support Inside the tube, there is a boss on the upper support tube and the lower support tube. The top end is fixedly connected to the upper cover of the support tube. There is a second through hole in the middle of the upper cover of the support tube. The second through hole is a threaded hole; the screw is located directly below the second through hole, and a square hole is left on the upper part of the screw. The lower part of the leading screw is threaded, and the lower part of the leading screw is threadedly connected with the tray; at least two windows are arranged on the side wall of the lower supporting tube below the boss of the lower supporting tube, and on the vertical side wall of each window Both are fixedly connected to a pin shaft, and the supporting claws are rotatably arranged on the pin shaft;

The driving device includes an inner rod, an outer rod and a wrench rod; the bottom of the outer rod has a screw thread suitable for the second through hole, and the outer rod passes through the first through hole and is threadedly connected with the second through hole; the inner rod is worn inside the outer rod And can rotate freely relative to the outer rod; there is a key at the bottom of the inner rod that matches the square hole left on the upper end of the screw, and when the inner rod rotates, it can drive the screw to rotate; the inner rod is connected to a wrench rod, and the outer rod is also connected to a wrench The wrench rod is used to drive the inner rod or the outer rod to rotate.

It should be noted that the boss of the upper support cylinder is the bottom wall of the upper support cylinder, and the boss of the lower support cylinder is formed by extending outward from the bottom of the lower support cylinder, and the extension distance is subject to not contacting the outer cylinder. The blocking device can be arranged inside the outer cylinder.

In order to make the utility model adaptable to more gas pipelines that need to replace valves, in view of the fact that most current gas pipelines use flanges to connect valves, the preferred technical solution is that the adapter connector is a flange.

In order to prevent the lower support cylinder from slipping from the inside of the upper support cylinder, and also to prevent the rubber cylinder from being too large on the outer wall of the lower support cylinder and making it difficult to operate, the preferred technical solution is that the utility model also includes a fixed gasket; the upper support There is a boss on the inner wall of the cylinder, a flange is left on the upper part of the fixed gasket, and the flange is lapped on the boss on the inner wall of the upper support cylinder, and the lower part of the fixed gasket is fixedly connected with the lower support cylinder by threads. The middle part of the fixed gasket has a hole, and the leading screw can pass through the hole in the middle part of the fixed gasket.

In order to prevent excessive up and down travel of the lead screw, or to fix the position where the square hole is left on the upper part of the lead screw, the preferred technical solution is that the utility model also includes an anti-drop gasket; it is located on the inner wall of the upper support cylinder above the fixed gasket Also be provided with a boss that is used to accept anti-lost pad, the middle part opening of anti-drop pad, aperture is slightly larger than the external diameter of leading screw middle part, is smaller than the external diameter of leading screw top.

In order to ensure the safety during the sealing of the gas pipeline by the sealing device, that is to prevent the air and gas in the adapter from being mixed and exploded when encountering an open flame, the preferred technical solution is to also include a release valve arranged on the side wall of the outer cylinder. After the release valve is unscrewed, the air mixed in the outer cylinder can be discharged by relying on the gas pressure in the gas pipeline, so as to avoid the occurrence of explosion.

In order to prevent the tray from falling from the lead screw after the number of rotations of the lead screw increases, the preferred technical solution is to set a number of eye screws through the side wall of the lower support tube, and the eye screws penetrate into the end of the lower support tube for Stop the raised part on the tray to prevent the tray from falling off the lead screw.

In order to prevent the anti-fall gasket from vibrating and jumping in the upper support cylinder, the preferred technical solution is to arrange an elastic spacer between the upper cover of the support cylinder and the anti-fall gasket.

The supporting claw of the utility model is arranged at the lower part of the plugging device. When in use, the supporting claw leans against the bottom wall or side wall of the gas branch pipe where the valve needs to be replaced. The length is suitable for the operation of replacing the valve when the gas branch pipe is short.

Description of drawings

Fig. 1 is a sectional view of the utility model structure.

Reference signs are explained as follows: 10-outer cylinder; 11-upper cover of outer cylinder; 12-adaptive connector; 13-release valve; 21-upper support cylinder; 22-lower support cylinder; 23-rubber cylinder; 24-wire Bar; 25-support cylinder upper cover; 26-tray; 27-pin shaft; 28-support claw; 31-inner rod; 32-outer rod; 33-wrench rod; 201-elastic spacer; ; 203-Fixing gasket; 204-Engage screws.

detailed description

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the utility model is not limited thereto.

A novel valve changer, including an adapter device, a blocking device and a driving device;

The adapter device includes an outer cylinder 10, an outer cylinder upper cover 11 and an adapter connector 12. The upper end of the outer cylinder 10 is sealed and connected to the outer cylinder upper cover 11, and the middle part of the outer cylinder upper cover 11 has a first through hole (in the figure not shown), the lower end of the outer cylinder 10 is fixedly connected to the adapter 12, and the adapter 12 is used to be adapted to the valve that needs to be replaced;

The blocking device comprises an upper support cylinder 21, a lower support cylinder 22, a rubber cylinder 23, a screw 24, a support cylinder upper cover 25, a tray 26, a support claw 28 and a pin shaft 27; and the lower support tube 22 is located inside the upper support tube 21. Both the upper support tube 21 and the lower support tube 22 have a boss. The rubber tube 23 is sleeved on the outer side wall of the lower support tube 22 and is located between the boss and the boss of the lower support tube 22; the top of the upper support tube 21 is fixedly connected to the support tube loam cake 25, and the middle part of the support tube loam cake 25 has a second through hole (not shown), the first The two through holes are threaded holes; the leading screw 24 is located directly below the second through hole, and the top of the leading screw 24 has a square hole (not shown), the bottom of the leading screw 24 is threaded, and the leading screw 24 The bottom is threaded with the tray 26; the side wall of the lower support tube 22 below the boss of the lower support tube 22 has at least two windows, and a pin shaft 27 is fixedly connected on the vertical side wall of each window. The supporting claw 28 is rotatably arranged on the pin shaft 27;

The driving device includes an inner rod 31, an outer rod 32 and a wrench rod 33; the bottom of the outer rod 32 has a screw thread suitable for the second through hole, and the outer rod 32 passes through the first through hole and is threadedly connected with the second through hole; The rod 31 is worn inside the outer rod 32 and can rotate freely relative to the outer rod 32; the bottom of the inner rod 31 has a key matching the square hole left on the upper end of the lead screw 24, and the inner rod 31 can drive the lead screw 24 to rotate when it rotates; The rod 31 is connected with a spanner rod 33 , and the outer rod 32 is also connected with a spanner rod 33 , and the spanner rod 33 is used to drive the inner rod 31 or the outer rod 32 to rotate.

Further, the fitting connector 12 is a flange.

The preferred technical solution is that the utility model also includes a fixed gasket 203; the inner side wall of the upper support tube 21 is provided with a boss, and a flange is left on the top of the fixed gasket 203, and the flange is lapped on the top of the upper support tube 21. On the boss on the inner wall, the bottom of the fixed gasket 203 is screwed and fixedly connected with the lower support tube 22, the middle part of the fixed gasket 203 is perforated, and the leading screw 24 can pass through the hole in the middle of the fixed gasket 203.

Preferred technical scheme also has, and the utility model also comprises anti-lost pad 202; Be positioned at the upper support tube 21 inner wall above fixed pad 203 and also be provided with a boss that is used to accept anti-drop pad 202, anti-drop pad The middle part of 202 is perforated, and the aperture is slightly larger than the outer diameter of the leading screw 24 middle part, and smaller than the outer diameter of the leading screw 24 tops.

The preferred technical solution also includes a release valve 13 arranged on the side wall of the outer cylinder 10 .

In a preferred technical solution, several eyebolts 204 are arranged through the side wall of the lower support cylinder 22 .

In a preferred technical solution, an elastic spacer 201 is provided between the upper cover 25 of the support cylinder and the anti-fall gasket 202 .

Example

First put the blocking device inside the adapter device, connect the outer rod 32 to the upper cover 25 of the support tube by rotating the wrench lever 33, connect the adapter connector 12 to the valve that needs to be replaced, close the release valve 13, open the valve that needs to be replaced Push down the knob of the valve (ball valve) to lower the outer rod 32 by pushing down the wrench rod 33 connected to the outer rod 32 and drive the entire blocking device to move down. When the rubber cylinder 23 is completely located below the valve to be replaced, stop Decentralization;

Then quickly open the release valve 13 and close it to exhaust the air, and lower the inner rod 31 through the wrench rod 33 connected with the inner rod 31, so that the key at the bottom of the inner rod 31 is inserted into the square hole on the upper end of the lead screw 24, and through the rotation The wrench rod 33 connected with the inner rod 31 is used to drive the screw 24 to rotate, and the screw 24 drives the tray 26 to move up, so that the bottom of the tray 26 pushes the support claw 28 with an inclined plane inside to open, and the support claw 28 opens The arc of the arc increases, and the supporting claw 28 gradually abuts against the bottom wall or side wall of the gas branch pipe that needs to be replaced (increasing the friction force and making the blockage safer), and the inner rod 31 continues to rotate, and the screw 24 further lifts the tray 26 , until the support claws 28 stop opening, the tray 26 moves up with the lower support cylinder 22, the lower support cylinder 22 slides upward in the upper support cylinder 21, and the extrusion of the respective bosses of the upper support cylinder 21 and the lower support cylinder 22 Next, the rubber tube 23 radially expands to complete the plugging.

Remove the adapter device and drive device, replace the valve, connect the adapter device and drive device, rotate the inner rod 31 in the reverse direction (relative to the blocking step), loosen the rubber tube 23 and the supporting claw 28, and pull the outer rod 32, Pull the blocking device to a position above the newly replaced valve, close the new valve, and complete the operation.

The utility model is not limited to the above-mentioned embodiments. Without departing from the essential content of the utility model, any deformation, improvement and replacement conceivable by those skilled in the art all fall within the scope of the utility model.

Claims (7)

1. A novel valve changer, comprising an adapter device, a blocking device and a driving device; it is characterized in that: The adapter device includes an outer cylinder, an upper cover of the outer cylinder and an adapter connector. The upper end of the outer cylinder is sealed and connected to the upper cover of the outer cylinder. A first through hole is opened in the middle of the upper cover of the outer cylinder. Connecting piece, the adapter connecting piece is used to adapt and connect with the valve that needs to be replaced; The blocking device includes an upper support cylinder, a lower support cylinder, a rubber cylinder, a lead screw, a support cylinder upper cover, a tray, a support claw and a pin shaft; the upper support cylinder and the lower support cylinder are slidingly connected and the lower support cylinder is located on the upper support Inside the tube, there is a boss on the upper support tube and the lower support tube. The top end is fixedly connected to the upper cover of the support tube. There is a second through hole in the middle of the upper cover of the support tube. The second through hole is a threaded hole; the screw is located directly below the second through hole, and a square hole is left on the upper part of the screw. The lower part of the leading screw is threaded, and the lower part of the leading screw is threadedly connected with the tray; at least two windows are arranged on the side wall of the lower supporting tube below the boss of the lower supporting tube, and on the vertical side wall of each window Both are fixedly connected to a pin shaft, and the supporting claws are rotatably arranged on the pin shaft; The driving device includes an inner rod, an outer rod and a wrench rod; the bottom of the outer rod has a screw thread suitable for the second through hole, and the outer rod passes through the first through hole and is threadedly connected with the second through hole; the inner rod is worn inside the outer rod And can rotate freely relative to the outer rod; there is a key at the bottom of the inner rod that matches the square hole left on the upper end of the screw, and when the inner rod rotates, it can drive the screw to rotate; the inner rod is connected to a wrench rod, and the outer rod is also connected to a wrench The wrench rod is used to drive the inner rod or the outer rod to rotate. 2. The novel valve changer according to claim 1, characterized in that: the matching connecting piece is a flange. 3. The new valve changer according to claim 2, characterized in that: it also includes a fixed gasket; a boss is provided on the inner wall of the upper support cylinder, and a flange is left on the upper part of the fixed gasket, and the flange overlaps On the boss on the inner side wall of the upper support cylinder, the bottom of the fixed gasket is screwed and fixedly connected with the lower support cylinder, the middle part of the fixed gasket has a hole, and the leading screw can pass through the hole in the middle of the fixed gasket. 4. The new valve changer according to claim 3, characterized in that: it also includes an anti-drop gasket; the inner wall of the upper support cylinder above the fixed gasket is also provided with a boss for receiving the anti-drop gasket, The middle part of the anti-drop gasket has a hole, and the hole diameter is slightly larger than the outer diameter of the middle part of the leading screw, and smaller than the outer diameter of the upper part of the leading screw. 5. The novel valve changer according to claim 4, characterized in that it further comprises a relief valve arranged on the side wall of the outer cylinder. 6. The new valve changer according to claim 5, characterized in that: several eyebolts are set through the side wall of the lower support cylinder, and the eyebolts penetrate into the end of the lower support cylinder to prevent the protrusions on the tray position to prevent the pallet from falling off the screw. 7. The new valve changer according to claim 6, characterized in that: an elastic spacer is provided between the upper cover of the support cylinder and the anti-fall gasket.