Spherical mechanical valve sealing detection tool

Abstract

The utility model discloses a sealing detection tool for a spherical mechanical valve, which comprises a metal ball seat, a liquid inlet is arranged at the center of the lower end of the metal ball seat, two liquid inlet and outlet channels are arranged on the metal ball seat, a metal ball for sealing the liquid inlet is arranged in the metal ball seat, the lower surface of the metal ball seat is connected with a metal lower end cover in a sealing manner, and the metal lower end cover is connected with the metal lower end cover in a sealing manner. A metal upper end cover is fixed to the upper surface of the metal ball seat, a metal piston rod for pressing the metal ball downwards is arranged in the metal ball seat, the lower end of the metal piston rod is of a boss-shaped structure, and the upper end of the metal piston rod penetrates through and extends to the position above the metal upper end cover; according to the utility model, the structure is simple, the operation is simple and convenient, the size of the liquid inlet when the liquid inlet is opened can be detected, the sealing performance of the spherical valve can be detected, and the detection is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of spherical mechanical valves, in particular to a sealing detection tool for spherical mechanical valves. Background Art

[0002] Valves are used in hydraulic systems in various ways, and spherical mechanical valves are commonly used valves in the prior art. However, during the valve design process, it is necessary to study the effects of different cavity pressures, valve cores, valve seats, opening times, opening pressures, spring stiffness, etc. on medium leakage, and testing is required. However, the existing testing devices have a complex structure, and different testing equipment is required for flow rate, outlet size, and sealing performance. The testing steps are complicated and inconvenient to use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a spherical mechanical valve sealing detection tooling with a simple structure and easy operation. It can not only detect the size of the liquid inlet when it is opened, but also detect the sealing performance of the spherical valve, making the detection more convenient and effectively solving the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spherical mechanical valve sealing detection tool, comprising a metal ball seat, a liquid inlet is provided at the center of the lower end of the metal ball seat, and two liquid inlet and outlet channels are provided on the metal ball seat, and a metal ball that closes the liquid inlet is provided inside the metal ball seat, and a metal lower end cover is sealingly connected to the lower surface of the metal ball seat, and a liquid inlet channel corresponding to the liquid inlet is provided at the center of the metal lower end cover, a metal upper end cover is fixed to the upper surface of the metal ball seat, a metal piston rod that presses the metal ball downward is provided inside the metal ball seat, the lower end of the metal piston rod is a boss-like structure, the upper end of the metal piston rod passes through and extends to the top of the metal upper end cover, and a top spring is provided between the boss of the metal piston rod and the lower surface of the metal upper end cover, and a magnetic ring displacement detection component for detecting the up and down movement of the metal piston rod is provided on the upper surface of the metal upper end cover.

[0005] Furthermore, a conical groove is provided on the lower surface of the metal piston rod, the conical groove corresponds to the metal ball, and a sealing O-ring is provided between the metal piston rod and the metal upper end cover.

[0006] Furthermore, the upper and lower surfaces of the metal ball seat, the metal lower end cover and the metal upper end cover are all provided with annular grooves, and two sealing O-rings are respectively provided inside the two annular grooves.

[0007] Furthermore, the magnetic ring displacement detection component includes a support frame fixed to the upper surface of the metal upper end cover, a displacement sensor is fixed to the upper center of the support frame, and the upper end of the metal piston rod is connected to a magnetic ring through a bracket, and the magnetic ring is located outside the detection rod of the displacement sensor.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: during detection, the liquid inlet is connected to the external liquid guide tube, and then one liquid inlet and outlet channel is closed, and the other liquid inlet and outlet channel is connected to the external flow meter. The liquid pushes the metal ball upward through the liquid inlet, and then the flow rate is detected by the external flow meter. When the metal ball moves upward, it drives the metal piston rod upward, and the metal piston rod can drive the magnetic ring upward. The position of the magnetic ring can be detected by the displacement sensor to determine the size of the liquid inlet opening by the metal ball. During leak detection, the liquid enters from one liquid inlet and outlet channel and is then discharged from another liquid inlet and outlet channel. When liquid flows out of the liquid inlet, it is determined that the sealing effect is poor, and when no liquid flows out of the liquid inlet, it proves that the sealing effect is good. The spherical mechanical valve sealing detection tooling has a simple structure and is easy to operate. It can not only detect the size of the liquid inlet when it is opened, but also detect the sealing performance of the spherical valve, making the detection more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0011] In the figure: 1 metal ball seat, 2 liquid inlet and outlet channels, 3 liquid inlet, 4 metal ball, 5 metal lower end cover, 6 metal upper end cover, 7 metal piston rod, 8 top spring, 9 magnetic ring displacement detection member, 91 support frame, 92 displacement sensor, 93 bracket, 94 magnetic ring, 10 sealing O-ring one, 11 sealing O-ring two. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] See also Figure 1-2The utility model provides a technical solution: a spherical mechanical valve sealing detection tool, comprising a metal ball seat 1, a liquid inlet 3 is arranged at the center of the lower end of the metal ball seat 1, and two liquid inlet and outlet channels 2 are arranged on the metal ball seat 1, and a metal ball 4 is arranged inside the metal ball seat 1 to close the liquid inlet 3, and a metal lower end cover 5 is sealed and connected to the lower surface of the metal ball seat 1, and a liquid inlet channel corresponding to the liquid inlet 3 is arranged in the center of the metal lower end cover 5, a metal upper end cover 6 is fixed to the upper surface of the metal ball seat 1, and a metal piston rod 7 is arranged inside the metal ball seat 1 to press the metal ball 4 downward, the lower end of the metal piston rod 7 is a boss-shaped structure, the upper end of the metal piston rod 7 penetrates and extends to the top of the metal upper end cover 6, and a top spring 8 is arranged between the boss of the metal piston rod 7 and the lower surface of the metal upper end cover 6, and a spring 8 is arranged on the upper surface of the metal upper end cover 6 to press the metal piston rod 7 up and down The magnetic ring displacement detection part 9 for dynamic detection, the lower surface of the metal piston rod 7 is provided with a conical groove, the conical groove corresponds to the metal ball 4, and a sealing O-ring 10 is provided between the metal piston rod 7 and the metal upper end cover 6, the upper and lower surfaces of the metal ball seat 1 and the metal lower end cover 5 and the metal upper end cover 6 are all provided with annular grooves, and the insides of the two annular grooves are respectively provided with sealing O-rings 11, the magnetic ring displacement detection part 9 includes a support frame 91 for fixing the upper surface of the metal upper end cover 6, a displacement sensor 92 is fixed at the upper end center of the support frame 91, the upper end of the metal piston rod 7 is connected with a magnetic ring 94 through a bracket 93, and the magnetic ring 94 is located on the outside of the detection rod of the displacement sensor 92. The spherical mechanical valve sealing detection tooling has a simple structure and is easy to operate. It can not only detect the size of the liquid inlet when it is opened, but also detect the sealing performance of the spherical valve, which makes the detection more convenient.

[0014] When in use: During detection, the liquid inlet 3 is connected to the external liquid guide tube, and then one liquid inlet and outlet channel 2 is closed, and the other liquid inlet and outlet channel 2 is connected to the external flow meter. The liquid pushes the metal ball 4 upward through the liquid inlet 3, and then the flow is detected by the external flow meter. When the metal ball 4 moves upward, it drives the metal piston rod 7 upward, and the metal piston rod 7 can drive the magnetic ring 94 to move upward. The position of the magnetic ring 94 can be detected by the displacement sensor 92, so as to judge the size of the opening of the liquid inlet 3 by the metal ball 4. When checking for leaks, the liquid enters from one liquid inlet and outlet channel 2 and is then discharged from another liquid inlet and outlet channel 2. When liquid flows out of the liquid inlet 3, it is judged that the sealing effect is poor. When no liquid flows out of the liquid inlet 3, it proves that the sealing effect is good.

[0015] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A spherical mechanical valve seal detection tool, comprising a metal ball seat (1), characterized in that: The center of the lower end of the metal ball seat (1) is provided with a liquid inlet (3), and the metal ball seat (1) is provided with two liquid inlet and outlet channels (2). A metal ball (4) is provided inside the metal ball seat (1) to close the liquid inlet (3). The lower surface of the metal ball seat (1) is sealed with a metal lower end cover (5), and the center of the metal lower end cover (5) is provided with a liquid inlet channel corresponding to the liquid inlet (3). A metal upper end cover (6) is fixed to the upper surface of the metal ball seat (1). A metal piston rod (7) is provided inside the metal ball seat (1) to press the metal ball (4) downward. The lower end of the metal piston rod (7) is a boss-shaped structure. The upper end of the metal piston rod (7) penetrates and extends to the top of the metal upper end cover (6). A top spring (8) is provided between the boss of the metal piston rod (7) and the lower surface of the metal upper end cover (6). A magnetic ring displacement detection component (9) is provided on the upper surface of the metal upper end cover (6) to detect the upward and downward movement of the metal piston rod (7).

2. A spherical mechanical valve sealing detection tool according to claim 1, characterized in that: A conical groove is provided on the lower surface of the metal piston rod (7), the conical groove corresponds to the metal ball (4), and a sealing O-ring (10) is provided between the metal piston rod (7) and the metal upper end cover (6).

3. The spherical mechanical valve sealing detection tool according to claim 1, characterized in that: The upper and lower surfaces of the metal ball seat (1), the metal lower end cover (5) and the metal upper end cover (6) are all provided with annular grooves, and two sealing O-rings (11) are respectively provided inside the two annular grooves.

4. The spherical mechanical valve sealing detection tool according to claim 1, characterized in that: The magnetic ring displacement detection member (9) comprises a support frame (91) fixed to the upper surface of the metal upper end cover (6); a displacement sensor (92) is fixed to the center of the upper end of the support frame (91); the upper end of the metal piston rod (7) is connected to a magnetic ring (94) via a bracket (93); the magnetic ring (94) is located outside the detection rod of the displacement sensor (92).

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