Valve sealing performance detection device

Abstract

The utility model discloses a valve sealing performance detection device, which belongs to the field of valve detection, and comprises a valve body, a through central positioning rod is arranged in the valve body, two ends of the central positioning rod are provided with thread parts, two ends of the positioning rod are provided with fitting columns, the fitting columns are respectively attached to an inlet end face and an outlet end face of the valve body, and limiting rings are symmetrically arranged on the fitting columns. A clamping cavity is formed between the two limiting rings, a rotating disc movably connected with the clamping cavity is arranged in the clamping cavity, a laser range finder is arranged on the rotating disc, laser emitted by the laser range finder is aligned to the inlet and outlet end face of the valve body, a supporting and positioning assembly is arranged at the bottom of the valve body, the valve body is supported by the supporting and positioning assembly, and the central positioning rod is placed on the supporting and positioning assembly. The precision of the end face of the valve can be effectively detected, so that the situation that leakage occurs at the joint under the condition that the internal sealing performance of the valve is good is reduced.

Description

Technical Field

[0001] The utility model relates to the field of valve detection, in particular to a valve sealing detection device. Background Art

[0002] A valve is a pipeline accessory used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. After the valve is produced, it is necessary to conduct a sealing test on the valve. The main purpose of the sealing test is to ensure that the valve or other sealing equipment can effectively prevent the leakage of the medium (such as liquid, gas, etc.) when it is closed.

[0003] Most existing detection devices detect the air pressure or flow inside the valve to determine the sealing performance of the valve. However, the processing accuracy and surface roughness of the valve sealing surface can also directly affect the sealing performance of the valve. If the sealing surface roughness is too high or there is damage, it may cause medium leakage, thereby affecting the accuracy of the sealing test. Utility Model Content

[0004] The utility model aims to provide a valve sealing detection device, which effectively solves the problem that most of the existing methods only detect the sealing of the inside of the valve, but ignore the precision detection of the valve connection surface, resulting in leakage even when there is no problem with the sealing of the inside of the valve.

[0005] The technical solution of the utility model is as follows:

[0006] A valve sealing detection device comprises a valve body, wherein a central positioning rod is provided passing through the valve body, wherein both ends of the central positioning rod have threaded portions, and both ends of the positioning rod have fitting columns, wherein the fitting columns are respectively attached to the inlet and outlet end faces of the valve body, and the fitting columns are symmetrically provided with limit rings, and a clamping cavity is formed between two of the limit rings, wherein a movably connected rotating disk is provided in the clamping cavity, and a laser rangefinder is provided on the rotating disk, and the laser emitted by the laser rangefinder is directed to the inlet and outlet end faces of the valve body, and a supporting positioning assembly is provided at the bottom of the valve body, wherein the supporting positioning assembly supports the valve body and the central positioning rod is placed on the supporting positioning assembly.

[0007] Furthermore, the support and positioning assembly includes a limit plate, and the opposite surfaces of the two limit plates are provided with placement grooves, and the two ends of the valve body are in the placement grooves.

[0008] Furthermore, a semicircular slot is provided on the top of the limiting plate, and the central positioning rod is placed on the semicircular slot.

[0009] Furthermore, the supporting and positioning assembly also includes a supporting plate, a bottom plate is provided at the bottom of the supporting plate and the limiting plate, a movably connected push rod is provided on the supporting plate, a cross bar is provided inside the push rod, and a strong spring is provided between the two push rods and is sleeved on the cross bar.

[0010] Furthermore, a push plate is provided on one side of the push rod close to the limit plate, the vertical cross-section of the push plate is arc-shaped, and the push plate is movably fitted on the side wall of the valve body end surface.

[0011] Furthermore, a fastener is provided on the threaded portion of the central positioning rod, and a handle is provided on the side of the rotating disk away from the laser rangefinder.

[0012] Furthermore, the transverse width of the placement groove is smaller than the thickness of the end portion of the valve body.

[0013] The advantages of the utility model are:

[0014] 1. The utility model provides a central positioning rod inside the valve body, the central positioning rod passes through the valve body, fits the fitting columns on both ends of the valve body, uses fasteners to fix the central positioning rod and the valve body, and rotates the rotating disk to enable the laser rangefinder to detect the flatness of the end faces at both ends of the valve body, so as to measure the accuracy of the two end faces of the valve body, thereby avoiding the situation where the medium leaks after the valve is connected to the pipeline later when the processing accuracy of the two ends of the valve body does not meet the standards, and realizes the detection of the sealing of the valve.

[0015] 2. The utility model sets up a support positioning assembly, in which the two ends of the valve body are placed in the placement groove of the limit plate, thereby pre-fixing the valve body. The strong springs on the cross bar will push the push rods at both ends outward, so that the push plate will eventually be tightly attached to the two opposite end faces of the valve body, thereby fixing the valve body. When the laser rangefinder measures the valve body, the movement of the valve body can be avoided, thereby improving the accuracy of the precision detection of the valve body end face. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the support and positioning assembly of the utility model;

[0018] Figure 3 This is a schematic diagram of the valve body and central positioning rod of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the rotating disk and other components of the utility model.

[0020] Figure numerals: 1. valve body; 2. central positioning rod; 3. threaded portion; 4. fitting column; 5. limiting ring; 6. clamping cavity; 7. rotating disk; 8. laser rangefinder; 9. limiting plate; 10. placement groove; 11. semicircular clamping groove; 12. supporting plate; 13. bottom plate; 14. push rod; 15. cross bar; 16. strong spring; 17. push plate; 18. fastener; 19. handle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] like Figures 1 to 4 As shown, the utility model provides a valve sealing detection device, which includes a valve body 1, in which a central positioning rod 2 is provided. The central positioning rod 2 passes through the interior of the valve body 1 and is located in the middle of the interior of the valve body 1.

[0023] The two ends of the central positioning rod 2 are provided with threaded parts 3 , and the fitting column 4 can be locked and fitted on the end surface of the valve body 1 through the provided threaded parts 3 .

[0024] Both ends of the positioning rod are provided with fitting columns 4, which are respectively attached to the inlet and outlet end faces of the valve body 1. Limiting rings 5 ​​are symmetrically arranged on the fitting columns 4, and a clamping cavity 6 is formed between the two limiting rings 5. A movably connected rotating disk 7 is arranged in the clamping cavity 6. The rotating disk 7 can be movably rotated on the fitting column 4, so that the rotating disk 7 can be rotated by the handle 19, so that the flatness of the entire end face of the valve body 1 can be measured.

[0025] A laser rangefinder 8 is provided on the rotating disk 7, and a display screen is provided on the laser rangefinder 8. The laser emitted by the laser rangefinder 8 is directed at the inlet and outlet end faces of the valve body 1. By arranging the laser rangefinder 8 at both ends of the valve body 1, the two end faces of the valve body 1 can be measured simultaneously, which is more efficient.

[0026] A supporting and positioning assembly is provided at the bottom of the valve body 1 , which supports the valve body 1 and the fitting column 4 is placed on the supporting and positioning assembly, thereby supporting the central positioning rod 2 .

[0027] The supporting and positioning assembly includes a limit plate 9, and the opposite surfaces of the two limit plates 9 are provided with a placement groove 10. The two ends of the valve body 1 are in the placement groove 10, and the arc of the placement groove 10 fits with the arc of the end face of the valve body 1, thereby pre-fixing the two ends of the valve body 1.

[0028] A semicircular slot 11 is provided on the top of the limiting plate 9 , and the fitting column 4 is placed on the semicircular slot 11 , and the central positioning rod 2 passes through the fitting column 4 , so that the central positioning rod 2 can pass through the inside of the valve body 1 and achieve support.

[0029] The supporting and positioning assembly also includes a supporting plate 12, a bottom plate 13 is provided at the bottom of the supporting plate 12 and the limiting plate 9, a push rod 14 with a movable connection is provided on the supporting plate 12, a cross bar 15 is provided inside the push rod 14, and a strong spring 16 is provided between the two push rods 14 and is sleeved on the cross bar 15. The strong spring 16 can be set to enable the push rod 14 to move to both sides on the cross bar 15.

[0030] A push plate 17 is provided on the side of the push rod 14 close to the limit plate 9. The vertical section of the push plate 17 is arc-shaped. The push plate 17 is movably fitted on the side wall of the end face of the valve body 1. The valve body 1 is fixed on the limit plate 9 by the push plate 17, and the valve body 1 is fixed in cooperation with the fitting column 4, thereby ensuring that the valve body 1 will not move when the end face of the valve body 1 is accurately detected, thereby improving the accuracy of the detection of the valve body 1.

[0031] A fastener 18 is provided on the threaded portion 3 of the central positioning rod 2 , and a handle 19 is provided on the side of the rotating disk 7 away from the laser rangefinder 8 . The fastener 18 can lock the fitting column 4 , thereby fixing the valve body 1 .

[0032] The transverse width of the placement groove 10 is smaller than the thickness of the end of the valve body 1 , so that the push plate 17 can be attached to the end surface of the valve body 1 when moving toward the valve body 1 , avoiding direct attachment to the limit plate 9 .

[0033] Detailed usage and effects of the above embodiments:

[0034] When it is necessary to perform a plane inspection on the end face of the valve body 1, the valve body 1 is placed on the limit plate 9, and there is a placement groove 10 on the limit plate 9. The large diameters of the two ends of the valve body 1 are placed in the placement groove 10. In the initial state, the two push plates 17 are close to each other. When the valve body 1 is placed, the strong spring 16 is reset to make the two push plates 17 move toward the end of the valve body 1 and finally fit on the valve body 1.

[0035] Pass the central positioning rod 2 through the inside of the valve body 1, place the fitting column 4 on the limit plate 9, use the fastener 18 to move on the threaded portion 3, so that the fitting column 4 locks the two ends of the valve body 1. At this time, turn on the laser rangefinder 8, and the light emitted by the laser rangefinder 8 will be projected on the end face of the valve body 1. Rotate the rotating disk 7 to measure the distance of the entire end face of the valve body 1, thereby detecting the plane accuracy of the end face of the valve body 1. If the placement accuracy is not up to standard and causes the leakage of the medium connected to the pipeline in the later stage, the sealing of the valve body 1 can be detected.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve sealing detection device, comprising a valve body (1), characterized in that: The valve body (1) is provided with a central positioning rod (2) passing through, and both ends of the central positioning rod (2) have threaded portions (3). Both ends of the positioning rod have fitting columns (4), and the fitting columns (4) are respectively attached to the inlet and outlet end faces of the valve body (1). Limiting rings (5) are symmetrically provided on the fitting columns (4), and a clamping cavity (6) is formed between the two limiting rings (5). A movable rotating disk (7) is provided in the clamping cavity (6), and a laser rangefinder (8) is provided on the rotating disk (7). The laser emitted by the laser rangefinder (8) is directed to the inlet and outlet end faces of the valve body (1). A supporting positioning component is provided at the bottom of the valve body (1), and the supporting positioning component supports the valve body (1) and the central positioning rod (2) is placed on the supporting positioning component.

2. The valve sealing detection device according to claim 1, characterized in that: The supporting and positioning assembly comprises a limiting plate (9), and two opposite surfaces of the limiting plates (9) are provided with placement grooves (10), and the two ends of the valve body (1) are in the placement grooves (10).

3. The valve sealing detection device according to claim 2, characterized in that: A semicircular groove (11) is provided on the top of the limiting plate (9), and the central positioning rod (2) is placed on the semicircular groove (11).

4. The valve sealing detection device according to claim 2, characterized in that: The supporting and positioning assembly also includes a supporting plate (12), a bottom plate (13) is provided at the bottom of the supporting plate (12) and the limiting plate (9), a push rod (14) which is movably connected is provided on the supporting plate (12), a cross bar (15) is provided inside the push rod (14), and a strong spring (16) which is sleeved on the cross bar (15) is provided between the two push rods (14).

5. The valve sealing detection device according to claim 4, characterized in that: A push plate (17) is provided on one side of the push rod (14) close to the limit plate (9); the vertical cross section of the push plate (17) is arc-shaped, and the push plate (17) is movably fitted on the side wall of the end face of the valve body (1).

6. The valve sealing detection device according to claim 1, characterized in that: A fastener (18) is provided on the threaded portion (3) of the central positioning rod (2), and a handle (19) is provided on the side of the rotating disk (7) away from the laser rangefinder (8).

7. The valve sealing detection device according to claim 2, characterized in that: The transverse width of the placement groove (10) is smaller than the thickness of the end of the valve body (1).

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