CN204228332U - Stopcock pressure testing machine - Google Patents

Abstract

The utility model discloses a cock valve pressure test machine. A middle plate is arranged side by side directly above the bottom plate. A cylinder liner is fixed between the two plates. The bottom plate and the middle plate are tightened by first bolts; the cylinder liner is equipped with a piston. The upper end of the piston is dynamically sealed with the through hole on the middle plate, and the piston body at the middle and lower part of the piston is dynamically sealed with the inner wall of the cylinder liner; the top plate is directly above the middle plate, and the two plates are fixed by the second bolt, and an observation hole is opened on the top plate; A pressure test blind plate is placed on the lower support plate in the support assembly, and an oil inlet hole is opened on the pressure test blind plate; a large via hole is opened on the upper support plate, and the upper support plate is directly above the lower support plate. It is fixed by the connecting plate, and the connecting plate and the lower part are fixed with sliding sleeves, and the two sliding sleeves are vacantly sleeved on one of the second bolts. The utility model abandons the pipe joints in the prior art, so that there is no need to laboriously connect the pipe joints, instead, the two ports of the cock valve are sealed by a plate, and then pressure oil is injected for pressure testing.

Description

Plug valve pressure test machine

technical field

The utility model belongs to the field of plug valve manufacturing, in particular to a plug valve pressure testing machine.

Background technique

As we all know, the plug valve is a widely used valve, and it needs to be tested after it is manufactured. At present, it is generally necessary to connect two pipe joints through fine threads at both ends of the plug valve. The connection of the pipe joints is generally completed manually or by special equipment, and then the pressure test is carried out. The defect of the existing pressure test method is that it is laborious to connect the pipe joints manually, which is not only inconvenient to operate, but also the sealing effect cannot be guaranteed. In addition, although it is convenient to use special equipment to connect and can ensure the sealing effect, it will increase the cost of the equipment.

Utility model content

The technical problem to be solved by the utility model is to provide a mechanical plug valve pressure testing machine which is easy to use and simple in structure.

The technical scheme of the utility model is as follows: a plug valve pressure test machine, which is characterized in that it includes a bottom plate, a top plate and a support assembly, wherein a middle plate is arranged side by side directly above the bottom plate, and a cylinder liner is fixed between the two plates. The upper and lower ports of the cylinder liner are in close contact with the corresponding plate surfaces of the corresponding plates, and the bottom plate and the middle plate are tightened together by a group of vertically arranged first bolts; a piston is housed in the cylinder liner, and the piston The upper end is dynamically sealed with the through hole on the middle plate, and the piston body at the middle and lower part of the piston is dynamically sealed with the inner wall of the cylinder liner, and the bottom plate and the middle plate are provided with an oil inlet nozzle, and the oil inlet nozzle is passed through the two oil inlet nozzles. Fill oil into the cylinder liner on the upper and lower sides of the piston body respectively; the top plate is arranged side by side directly above the middle plate, and the two plates are fixedly connected by a set of vertically arranged second bolts, and there is a vertical hole in the center of the top plate Observation hole;

The support assembly includes a lower support plate and an upper support plate, wherein the lower support plate is a horizontal plate, a pressure test blind plate is placed horizontally on the upper surface of the lower support plate, and an oil inlet hole is opened on the pressure test blind plate , the inlet of the oil inlet hole is located on the side of the pressure test blind plate, and the outlet of the oil inlet hole is located on the top surface of the pressure test blind plate; a large via hole is vertically opened on the upper support plate, and the upper support plate is arranged side by side on the lower support plate Directly above the plate, these two plates are fixed by a connecting plate, and a sliding sleeve is fixedly provided on the upper and lower parts of the connecting plate, and these two sliding sleeves are vacantly sleeved on one of the second bolts.

When in use, first turn the support assembly so that the lower support plate and the upper support plate are located outside the second bolt, and move the plug valve from top to bottom so that the plug valve is placed on the pressure test blind plate, and the upper part of the plug valve is located on the upper support Then, turn the support assembly so that the lower support plate and the upper support plate are directly above the piston, and then move the piston upward by controlling the hydraulic pressure, and move upward against the support assembly until the stopcock The upper port of the top plate is closely attached to the lower surface of the top plate; finally, oil is injected into the oil inlet hole of the pressure test blind plate, and the pressure oil is injected into the lower part of the cock valve core through the oil inlet hole, and at this time, the inspection is carried out through the observation hole of the top plate. Observe, if it is observed that there is pressure oil seeping from the upper part of the plug valve spool, the plug valve is unqualified, otherwise it is qualified.

Adopting the above technical scheme, the utility model abandons the pipe joints in the current technology, so that there is no need to connect the pipe joints laboriously. Instead, the two ports of the cock valve are sealed by the plate, and then the pressure oil is injected to carry out the pressure test. The utility model is simple in structure, easy to implement, convenient to use, has good practicability, and is suitable for wide application.

Preferably, the pressure test blind plate is a circular plate with a two-stage stepped structure with a small top and a large bottom, and the oil inlet hole is an L-shaped hole.

For the convenience of implementation, the upper and lower ports of the cylinder liner are respectively inserted into the grooves on the corresponding surfaces of the bottom plate and the middle plate.

Beneficial effects: the utility model abandons the pipe joints in the current technology, so that there is no need to laboriously connect the pipe joints. Instead, the two ports of the cock valve are sealed by a plate, and then pressure oil is injected for pressure testing. The new type is simple in structure, easy to implement, convenient to use, has good practicability, and is suitable for wide popularization and application.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in Figure 1, a plug valve press test machine is mainly composed of a bottom plate 1, an intermediate plate 2, a cylinder liner 3, a first bolt 4, a piston 5, a top plate 6, a second bolt 7 and a support assembly. Wherein, the base plate 1 is fixed, and an intermediate plate 2 is arranged side by side directly above the base plate 1, and a cylinder liner 3 is fixed between the two plates, and the upper and lower ports of the cylinder liner 3 are respectively inserted into the corresponding plate surface of the corresponding plate. In the groove on the board, and close to the corresponding board surface. At the same time, the bottom plate 1 and the middle plate 2 are tightened together by a group of vertically arranged first bolts 4 , and the number of the first bolts 4 is selected according to actual needs.

A piston 5 is housed in the cylinder liner 3 , the upper end of the piston 5 is dynamically sealed with the through hole on the middle plate 2 , and the piston body 5 a at the middle and lower part of the piston 5 is dynamically sealed with the inner wall of the cylinder liner 3 . Simultaneously, described base plate 1 and intermediate plate 2 are all provided with an oil inlet nozzle (not shown in the figure), and through these two oil inlet nozzles, oil is injected into the cylinder liner 3 on the upper side and the lower side of the piston body 5a respectively. Two oil inlet nozzles suck oil from the hydraulic station through the pipeline. The top plate 6 is arranged side by side directly above the middle plate 2, and the two plates are fixedly connected by a group of vertically arranged second bolts 7, and a viewing hole 6a is vertically opened at the center of the top plate 6, and the viewing hole The axis line of 6a is on the same straight line as the axis line of the piston 5 .

The support assembly is mainly composed of a lower support plate 8 , a pressure test blind plate 9 , an upper support plate 10 , a connecting plate 11 and a sliding sleeve 12 . Wherein, the lower support plate 8 is a horizontal plate, and a pressure test blind plate 9 is placed horizontally on the upper plate surface of the lower support plate 8. The pressure test blind plate 9 is a circular plate, and is a two-stage type with a small top and a large bottom. ladder structure. An L-shaped oil inlet hole 9 a is opened on the pressure test blind plate 9 , the inlet of the oil inlet hole 9 a is located on the side of the pressure test blind plate 9 , and the outlet of the oil inlet hole 9 a is located on the top surface of the pressure test blind plate 9 . A large via hole 10a is vertically opened on the upper support plate 10, and the upper support plate 10 is arranged side by side directly above the lower support plate 8. These two plates are fixed by a connecting plate 11, and the upper and lower parts of the connecting plate 10 are Each is fixed with a sliding sleeve 12 , and the two sliding sleeves 12 are vacantly sleeved on one of the second bolts 7 .

The working principle of the present utility model is as follows;

First turn the support assembly so that the lower support plate 8 and the upper support plate 10 are located outside the second bolt 7, and move the plug valve X from top to bottom so that the plug valve X is placed on the pressure test blind plate 9, and the plug valve X The upper part of the upper support plate is located in the large via hole 10a of the upper support plate 10; then, the support assembly is rotated so that the lower support plate 8 and the upper support plate 10 are located directly above the piston 5, and the piston 5 is moved upward by controlling the hydraulic pressure. And move upward against the support assembly until the upper port of the plug valve X is in close contact with the lower surface of the top plate 6; finally, fill oil into the oil inlet hole 9a of the pressure test blind plate 9, and supply oil to the plug valve through the oil inlet hole 9a The lower part of the X valve core is injected with pressure oil. At this time, observe through the observation hole 6a of the top plate 6. If the pressure oil leaks from the upper part of the plug valve X valve core, the plug valve X is unqualified, otherwise it is qualified.

The above descriptions are only preferred embodiments of the present utility model, and are not limited to the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (3)

1. a stopcock pressure testing machine, it is characterized in that: comprise base plate (1), top board (6) and supporting component, wherein there is one piece of intermediate plate (2) directly over base plate (1) side by side, a cylinder sleeve (3) is fixed with between this two boards, the upper and lower port of this cylinder sleeve is close to the respective plate face of respective panels respectively, and base plate (1) and intermediate plate (2) are by one group of the first bolt (4) tension vertically arranged together; Described cylinder sleeve (3) is built with a piston (5), via hole motive seal on this piston upper end and described intermediate plate (2), and the piston body (5a) of piston (5) middle and lower part and cylinder sleeve (3) inwall motive seal, and described base plate (1) and intermediate plate (2) are equipped with an inlet nozzle, and by cylinder sleeve (3) the interior oiling of these two inlet nozzles respectively to piston body (5a) upper and lower sides; Described top board (6) also comes directly over intermediate plate (2), this two boards is fixedly connected with by the second bolt (7) that a group is vertically arranged, and vertically has a viewport (6a) in the center of top board (6);

Described supporting component comprises lower supporting plate (8) and upper backup pad (10), wherein lower supporting plate (8) is leveling board, the upper face horizontal positioned of this lower supporting plate has one piece of PRESSURE TESTING BLIND FLANGE (9), PRESSURE TESTING BLIND FLANGE has an oil supply hole (9a), the import of this oil supply hole is positioned at PRESSURE TESTING BLIND FLANGE (9) side, and the outlet of oil supply hole (9a) is positioned at PRESSURE TESTING BLIND FLANGE (9) end face; Described upper backup pad (10) vertically has a large via hole (10a), this upper backup pad also comes directly over lower supporting plate (8), this two boards is fixed by web joint (11), the upper and lower part of this web joint is all installed with a sliding sleeve (12), and these two sliding sleeve empty sets are wherein on described second bolt (7).

2. stopcock pressure testing machine according to claim 1, is characterized in that: described PRESSURE TESTING BLIND FLANGE (9) is circular slab, and is up-small and down-big two-part staircase structure, and described oil supply hole (12a) is L shape hole.

3. stopcock pressure testing machine according to claim 1 and 2, is characterized in that: the upper and lower port of described cylinder sleeve (3) inserts in the groove on base plate (1) and intermediate plate (2) respective panels face respectively.