Online repairing and positioning device for valve seat of gate valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to an online repairing and positioning device for a gate valve seat. Comprising a positioning block, a valve seat, a connecting rod, a limiting block, a connecting plate, a sliding hammer, a handle and a valve body, the positioning block is connected with the connecting rod, the limiting block is fixed to the connecting rod, the connecting plate is installed on the connecting rod, the sliding hammer is installed on the connecting rod and located above the connecting plate, and the handle is connected with the connecting rod. The utility model has the beneficial effects that the valve seat sealing surfaces on the two sides are positioned through the wedge surfaces on the two sides of the positioning block, and the positioning is simple and reliable. And the occupied valve body space is small, and follow-up valve seat online welding is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field, and specifically relates to a gate valve seat on -line repair positioning device. BACKGROUND

[0002] The gate valve is a control element for isolating equipment and pipe systems, regulating flow, preventing backflow, regulating and discharging pressure in nuclear power plants, and plays an important role in the pipe system. When the gate valve is severely damaged, it needs to be replaced. In order to save operating costs and reduce the number of high-priced whole valve spare parts, the valve seat is repaired by online replacement.

[0003] When the valve seat is replaced online, the gate valve is connected to the pipeline at both ends, and can only be repaired through the gate valve flange. After the damaged valve seat is removed, the new valve seat needs to be installed before the subsequent welding process can be carried out. Due to the small space of the valve body cavity, in order not to affect the subsequent welding process of the valve seat, a gate valve seat on-line repair positioning device with small space occupation is needed. The technical scheme in the prior art of a single gate plate wedge type gate valve seat welding tool (patent No. CN216462702U) occupies most of the valve body space, which is not conducive to the subsequent welding of the valve seat. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a gate valve seat on-line repair positioning device, which can reduce the occupied space and is simple to operate.

[0005] The technical scheme of the utility model is as follows: a gate valve seat on-line repair positioning device, comprising a positioning block, a valve seat, a connecting rod, a limiting block, a connecting plate, a sliding hammer, a handle and a valve body, the positioning block is connected with the connecting rod, the limiting block is fixed on the connecting rod, the connecting plate is installed on the connecting rod, the sliding hammer is installed on the connecting rod and located above the connecting plate, and the handle is connected with the connecting rod.

[0006] The positioning block is in contact with the sealing surface of the two valve seats through the wedge surfaces on both sides of the positioning block, so as to ensure the installation accuracy of the two valve seats.

[0007] The sliding hammer is connected with the connecting rod in a sliding manner, and is used for hammering the connecting plate during installation, so that the positioning block is pressed against the valve seat.

[0008] The connecting rod is provided with a wrench interface at both ends, which is used for tightening the connecting rod and the handle when the positioning device is installed.

[0009] The limiting block is matched with the inner wall of the valve body, and is used for preventing the positioning device from rotating during installation.

[0010] The connecting plate is used for increasing rigidity of the device, and preventing the positioning device from rotating when the slide hammer strikes the connecting plate.

[0011] The limiting block is fixed on the connecting rod by fasteners.

[0012] The connecting plate is installed on the connecting rod by fasteners.

[0013] The beneficial effect of the utility model lies in: the utility model positions two valve seat sealing surfaces through the wedge surfaces on two sides of the positioning block, and positioning is simple and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the gate valve seat online repair positioning device.

[0015] In the figure: 1 positioning block, 2 valve seat, 3 connecting rod, 4 limiting block, 5 connecting plate, 6 slide hammer, 7 handle, 8 valve body. DETAILED DESCRIPTION

[0016] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0017] As Figure 1 shown, a gate valve seat online repair positioning device comprises a positioning block 1, a valve seat 2, a connecting rod 3, a limiting block 4, a connecting plate 5, a slide hammer 6, a handle 7 and a valve body 8. The positioning block 1 is connected with the connecting rod 3 through screw threads, the limiting block 4 is fixed on the connecting rod 3 through fasteners, the connecting plate 5 is installed on the connecting rod 3 through fasteners, the slide hammer 6 is installed on the connecting rod 3 and located above the connecting plate 5, and the handle 7 is connected with the connecting rod 3 through screw threads.

[0018] The positioning block 1 contacts the sealing surfaces of the two valve seats 2 through the wedge surfaces on both sides of the positioning block 1, thereby ensuring the installation accuracy of the two valve seats.

[0019] The slide hammer 6 is connected on the connecting rod 3 in a sliding mode and is used for striking the connecting plate 5 during installation, so that the positioning block 1 is pressed against the valve seat 2.

[0020] The connecting rod 3 has a wrench interface at both ends and is used for tightening the connecting rod 3 and the handle 7 when the positioning device is installed.

[0021] The limiting block 4 cooperates with the inner wall of the valve body 8 and is used for preventing the positioning device from rotating during installation of the positioning device.

[0022] The connecting plate 5 is used for increasing rigidity of the device, and preventing the positioning device from rotating when the slide hammer 6 strikes the connecting plate 5.

[0023] In use, the operator carries the positioning device above the valve body, slowly places the positioning device into the valve body through the handle 7, and makes the wedge surface of the positioning block 1 contact the sealing surface of the valve seat 2. Shaking the handle 7 makes the limiting block 4 contact the inner wall of the valve body 8. By using the sliding hammer 6 to hit the connecting plate 5, the wedge surface of the positioning block 1 is fully in contact with the sealing surface of the valve seat 2, that is, the installation and positioning of the valve seat 2 are completed. After the welding of the valve seat 2 is completed, the positioning device is removed through the handle 7.

[0024] The above specific embodiments are only used to explain and illustrate the design concept of the present application, and the role is to facilitate relevant technical personnel to understand and implement, and is not limited to the protection scope of the present application. Therefore, the equivalent changes using the design concept of the present application still belong to the protection scope of the present application.

Claims

1. An on-line repair positioning device for a gate valve seat, characterized by: The utility model relates to a positioning device for valve seat, including positioning block, valve seat, connecting rod, limit block, connecting plate, slide hammer, handle and valve body, the positioning block is connected with the connecting rod, the limit block is fixed on the connecting rod, the connecting plate is installed on the connecting rod, the slide hammer is installed on the connecting rod, is located the upper side of connecting plate, the handle is connected with the connecting rod; The positioning block is in contact with the sealing surface of the two valve seats through the wedge surface on both sides, which ensures the installation accuracy of the two valve seats; The slide hammer is connected on the connecting rod for hammering the connecting plate during installation, so that the positioning block is pressed against the valve seat; The connecting rod has a wrench interface at both ends for tightening the connecting rod and the handle when installing the positioning device; The limit block cooperates with the inner wall of the valve body to prevent the positioning device from rotating during installation of the positioning device; The connecting plate is used to increase the rigidity of the equipment, and prevent the positioning device from rotating when the slide hammer strikes the connecting plate; The limit block is fixed on the connecting rod by fasteners; The connecting plate is installed on the connecting rod by fasteners.

Images