CN203908744U - Waterless type valve body seal test device - Google Patents

Abstract

The utility model discloses an anhydrous valve body sealing test device, which comprises a symmetrical left vertical plate and a right vertical plate located on the bottom plate at the same time, and two parallel sliding shafts are arranged between the left vertical plate and the right vertical plate. A moving plate is arranged between the two sliding shafts. After a screw rod runs through the left vertical plate, one end of the screw rod is connected with the moving plate through a bearing. The bearing is installed on the side of the moving plate facing the left vertical plate, and one end of the screw rod is inserted into the bearing. In the shaft sleeve, the side of the moving plate facing the right vertical plate is provided with a left clamping plate, and the side of the right vertical plate facing the left vertical plate is provided with a right clamping plate, the right clamping plate is a disc body, and the left clamping plate includes a The hollow cylinder and the ring plate sleeved on the outer diameter of the hollow cylinder, the end face of the hollow cylinder facing the right splint is flush with the end face of the ring plate facing the right splint, and the hollow cylinder is provided with a vent hole. The utility model has the advantages of simple structure, simple operation, high safety performance, no damage to the valve body, and no need for water seal detection.

Description

Waterless valve body seal test device

technical field

The utility model relates to an anhydrous valve body sealing test device in electric power equipment.

Background technique

In the power industry, some valve bodies need to be used, and the valve bodies require strict sealing tests. Often the purchased valve bodies are all leak test reports issued by the manufacturer, and the test results are quite different from the actual use. There are many valve bodies with poor sealing performance, so often the newly purchased valve bodies need to be inspected by a third-party inspection agency before putting qualified products into storage, which can avoid the use of unqualified products and prevent valve bodies with poor sealing performance Occurs in the construction environment. However, the detection efficiency of the third-party testing agency is low, and the test of the valve body is performed in a water-sealed environment, which is highly corrosive to the valve body. Due to the effect of corrosion, it will also become a substandard product.

Utility model content

The purpose of this utility model is to provide a water-free valve body sealing test device, which can quickly test the valve body and can be tested in a dry environment. operate.

The purpose of this utility model is mainly achieved through the following technical solutions: an anhydrous valve body sealing test device, including a symmetrical left vertical plate and a right vertical plate located on the bottom plate at the same time, and two Sliding shafts with parallel axes, a moving plate is set between the two sliding shafts, the moving plate and the sliding shaft are connected by a sliding fit, a screw rod runs through the left vertical plate, and one end of the screw rod is connected to the moving plate through a bearing. The bearing is installed on the side of the moving plate facing the left vertical plate, one end of the screw rod is inserted into the bushing of the bearing, the side of the moving plate facing the right vertical plate is provided with a left splint, and the side of the right vertical plate facing the left vertical plate is provided with a The right splint, the right splint is a disc body, the left splint includes a hollow cylinder connected to the moving plate and a ring plate sleeved on the outer diameter of the hollow cylinder, the end face of the hollow cylinder facing the right splint and the ring plate face to the right The end faces of the splint are flush, and the hollow cylinder is provided with air holes.

According to the above-mentioned structure, the design principle of the utility model is as follows: the base plate, the left vertical plate and the right vertical plate are used to form a bracket system, the moving plate drives the moving plate to move, and the sliding fit connection is adopted between the moving plate and the sliding shaft, so that The movable plate can slide freely, and when driven by the screw rod, that is, the screw rod is threadedly connected with the left vertical board. After the screw rod is rotated, the screw rod will be displaced in the direction of its own axis. At this time, the moving plate is driven to move. Since the moving plate is required to be in a fixed and non-rotating state, the screw rod is connected to the moving plate by means of bearings. After placing the valve body to be tested between the left splint and the right splint, use the moving plate to move toward the right splint, so that the left splint and the right splint hold the valve body to be tested, and the hollow cylinder extends to the inside of the valve body. The two ends of the test valve body are respectively sealed and crimped with the left splint and the right splint. In this way, after using a press to inject air pressure into the valve body to be tested through the vent hole, observe the air pressure coefficient of the press. If the air pressure coefficient is at one end If the pressure coefficient remains unchanged, it can be judged that the valve body to be tested is a qualified product. If the air pressure coefficient becomes smaller, it means that the valve body to be tested is a non-conforming product.

Preferably, the center of circle of the left splint and the center of circle of the right splint are located on the same straight line.

Preferably, the side of the ring plate facing the right clamping plate is clamping surface A, and the side of the right clamping plate facing the left clamping plate is clamping surface B, clamping surface A and clamping surface B are all provided with a plurality of sealing protrusion rings, adjacent sealing protrusions An inter-ring groove is formed between the rings, and a sealing rubber ring is filled in the inter-ring groove. By utilizing the inter-ring grooves formed between the adjacent sealing protruding rings, the end surfaces of the two ends of the valve body to be tested can extend into the inter-ring grooves, so that the two ends of the valve body to be tested are clamped. Prevent the valve body to be tested from sliding, and protect the end face of the valve body to be tested. The sealing rubber ring can further increase the sealing effect.

Preferably, the plane where the axes of the two sliding shafts are located forms an included angle with the horizontal plane. It is convenient to place the valve body to be tested.

Preferably, a nut is sleeved on the outer diameter of the end of the screw rod away from the bearing. After twisting the nut, the screw rod can be driven to rotate. It is convenient to manually clamp the valve body to be tested.

The utility model has the advantages of simple structure, simple operation, high safety performance, no damage to the valve body, and no need for water seal detection.

Description of drawings

Fig. 1 is a three-dimensional schematic view of the device.

Figure 2 is a schematic diagram of the right splint.

The reference signs in the figure are respectively represented as: 1, nut; 2, left vertical plate; 3, bottom plate; 4, screw rod; 5, sliding shaft; 6, moving plate; 7, left splint; 8, valve to be tested 9, the right splint; 10, the right vertical plate; 11, the bearing; 91, the sealing raised ring; 92, the groove between the rings.

Detailed ways

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

Example 1:

As shown in Figure 1-Figure 2.

An anhydrous valve body sealing test device, including a symmetrical left vertical plate 2 and a right vertical plate 10 located on the bottom plate 3 at the same time, two sliding shafts 5 parallel to the axis are arranged between the left vertical plate 2 and the right vertical plate 10, A moving plate 6 is arranged between the two sliding shafts 5, and the moving plate 6 and the sliding shafts are connected by a sliding fit. After a screw rod 4 runs through the left vertical plate 2, one end of the screw rod 4 is connected to the moving plate through a bearing 11. , the bearing 11 is installed on the side of the moving plate facing the left vertical plate 2, one end of the screw rod 4 is inserted into the bushing of the bearing 11, the side of the moving plate facing the right vertical plate 10 is provided with a left splint 7, and the right vertical plate 10 faces One side of the left vertical plate is provided with a right splint 9, the right splint 9 is a disc body, and the left splint 7 includes a hollow cylinder connected to the moving plate and a ring plate sleeved on the outer diameter of the hollow cylinder, the hollow cylinder The end surface facing the right clamping plate 9 is flush with the end surface of the ring plate facing the right clamping plate 9, and the hollow cylinder is provided with a ventilation hole.

The utility model according to the above structure, its design principle is: use the base plate 3, the left vertical plate 2 and the right vertical plate 10 to form a support system, the mobile plate 6 drives the mobile plate 6 to move, and the sliding plate is used between the mobile plate 6 and the sliding shaft. The mode of matching connection makes the movable plate 6 slide freely, and when driven by the screw rod 4, that is, the screw rod 4 is threadedly connected with the left vertical plate 2. After the screw rod 4 is rotated, the screw rod 4 will be displaced in the direction of its own axis, which will drive the moving plate to move. Since the moving plate is required to be in a fixed and non-rotating state, the screw rod 4 is connected with the moving plate by means of a bearing. After placing the valve body 8 to be tested between the left splint 7 and the right splint 9, use the moving plate to move toward the right splint 9, so that the left splint 7 and the right splint 9 clamp the valve body 8 to be tested, and the hollow cylinder Extending to the inside of the valve body, the two ends of the valve body 8 to be tested are respectively sealed and crimped with the left splint 7 and the right splint 9. In this way, a pressing machine is used to inject air pressure into the inside of the valve body 8 to be tested through the vent hole, and the pressure is observed. The air pressure coefficient of the machine, if the air pressure coefficient remains unchanged within a certain period of time, it can be judged that the valve body to be tested is a qualified product, and if the air pressure coefficient becomes smaller, it means that the valve body to be tested is a non-conforming product.

Preferably, the center of circle of the left splint 7 and the center of circle of the right splint 9 are located on the same straight line.

Preferably, the side of the ring plate facing the right clamping plate 9 is the clamping surface A, and the side of the right clamping plate 9 facing the left clamping plate 7 is the clamping surface B, and the clamping surface A and the clamping surface B are all provided with a plurality of sealing raised rings 91. An inter-ring groove 92 is formed between adjacent sealing protruding rings 91 , and a sealing rubber ring is filled in the inter-ring groove 92 . By forming inter-ring grooves 92 between adjacent sealing protruding rings 91, the end faces of both ends of the valve body to be tested can extend into the inter-ring grooves 92, so that both ends of the valve body to be tested are clamped. Prevent the valve body to be tested from sliding, and protect the end face of the valve body to be tested. The sealing rubber ring can further increase the sealing effect.

Preferably, the plane where the axes of the two sliding shafts are located forms an included angle with the horizontal plane. It is convenient to place the valve body to be tested.

Preferably, a nut 1 is sleeved on the outer diameter of the end of the screw rod away from the bearing. After the nut 1 is twisted, the screw rod can be driven to rotate. It is convenient to manually clamp the valve body to be tested.

As mentioned above, the utility model can be well realized.

Claims (4)

1. An anhydrous valve body sealing test device, characterized in that: it includes a left vertical plate (2) and a right vertical plate (10), which are symmetrical and located on the bottom plate (3) at the same time, and a left vertical plate (2) and a right vertical plate (10) are provided with two sliding shafts (5) parallel to the axis, and a moving plate (6) is arranged between the two sliding shafts (5), and the moving plate (6) and the sliding shaft are connected by a sliding fit. After a screw rod (4) runs through the left vertical board (2), one end of the screw rod (4) is connected with the moving plate through a bearing (11), and the bearing (11) is installed on one side of the moving board facing the left vertical board (2). side, one end of the screw rod (4) is inserted into the bushing of the bearing (11), the side of the moving plate facing the right vertical plate (10) is provided with a left splint (7), and the right vertical plate (10) faces the side of the left vertical plate One side is provided with a right splint (9), the right splint (9) is a disc body, and the left splint (7) includes a hollow cylinder connected to the moving plate and a ring plate sleeved on the outer diameter of the hollow cylinder. The end face of the cylinder facing the right splint (9) is flush with the end face of the ring plate facing the right splint (9), and the hollow cylinder is provided with a ventilation hole. 2. The waterless valve body sealing test device according to claim 1, characterized in that: the side of the ring plate facing the right splint (9) is the clamping surface A, and the right splint (9) faces the left splint (7) One side is clamping surface B, clamping surface A and clamping surface B are provided with a plurality of sealing protruding rings (91), and inter-ring grooves (92) are formed between adjacent sealing protruding rings (91), and the inter-ring grooves (92) is filled with sealing rubber ring. 3. The anhydrous valve body sealing test device according to claim 1, characterized in that: the plane where the axes of the two sliding shafts are located forms an included angle with the horizontal plane. 4. The water-free valve body sealing test device according to claim 1, characterized in that: a nut (1) is sleeved on the outer diameter of the end of the screw rod away from the bearing.