Valve casing sealing performance testing device

Abstract

The utility model discloses a valve casing sealing performance testing device, and relates to the technical field of valve detection, the valve casing sealing performance testing device comprises a rack body, two ends of the rack body are movably connected with end part clamping assemblies which are symmetrically arranged, and the bottoms of the end part clamping assemblies are in transmission connection with a transmission assembly; the end clamping assembly is mainly composed of a conical sealing end cover and a rubber sheet used for sealing the joint, and the rubber sheet is fixed to the curved surface of the sealing end cover. A movable sliding plate is further arranged on one side of the sealing end cover, and an internal thread sliding block is arranged at the end, away from the sealing end cover, of the movable sliding plate. The transmission assembly comprises a compound threaded rod; according to the utility model, the transmission assembly drives the end part clamping assemblies at the two ends to get close to the middle, clamping force can seal the left side and the right side of the valve casing at the same time, and bolts are not needed for connection at joints, so that part of preparation time before detection is saved, and the efficiency is improved.

Description

Technical Field

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

[0002] The valve shell mainly plays a sealing role, so the valve shell needs to be tested for its sealing after production. During the test, the holes at both ends of the valve need to be sealed, and then compressed gas is filled into the inside of the valve shell through the holes on the upper part of the valve, and the pressure change is observed through the pressure gauge. When the pressure does not change, it means that the sealing is qualified. A decrease in the pressure gauge value means that the valve shell is leaking and unqualified.

[0003] However, in practice, end covers with flanges are generally used to seal the two ends of the valve housing. When in use, the end covers need to be fitted onto the end faces of the valve housing, and then the end covers and the flanges of the valve housing are fixed with bolts. This bolt connection method requires tools to tighten or loosen the bolts, and the two end covers take a long time to install and remove, resulting in low detection efficiency. Utility Model Content

[0004] The utility model aims to provide a valve casing sealing test device, wherein the end clamping assemblies at both ends are brought closer to the middle until the end clamping assemblies are tightly attached to the inlet and outlet pipe ends at both ends of the valve casing, thereby sealing the two ends of the valve casing respectively, and the connection does not need to be fastened with bolts, thereby saving preparation time before testing.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A valve housing sealing test device, comprising

[0007] A frame body, wherein both ends of the frame body are movably connected with symmetrically arranged end clamping assemblies, and the bottom of the end clamping assemblies is transmission-connected with a transmission assembly;

[0008] The end clamping assembly is mainly composed of a conical sealing end cover and a rubber sheet for sealing the connection, and the rubber sheet is fixed on the curved surface of the sealing end cover; a movable slide is also provided on one side of the sealing end cover, and an internal threaded slider is provided on the end of the movable slide away from the sealing end cover;

[0009] The transmission component comprises a compound threaded rod, a gear is fixed in the middle of the compound threaded rod, and a motor is arranged on one side of the compound threaded rod.

[0010] As a further technical solution of the utility model, a slide groove is symmetrically opened on the inner side of the frame body, and the movable slide plate passes through the frame body and is slidably connected to the inner side of the slide groove.

[0011] As a further technical solution of the utility model, the threads at both ends of the compound threaded rod have opposite rotation directions, and both ends of the compound threaded rod are connected to the internal threaded slider in a cooperative manner.

[0012] As a further technical solution of the utility model, a screw support plate is further provided at the lower part of the frame body, and a plurality of screw support plates are provided, and two are provided in a group, and each group of the screw support plates is respectively located on both sides of the slide groove.

[0013] As a further technical solution of the utility model, the compound threaded rod is movably connected to the screw support plate through a bearing; the motor is fixedly connected to the frame body; there are two gears, one connected to the compound threaded rod and the other cooperatively connected to the motor.

[0014] As a further technical solution of the utility model, an adapter and an air intake disk are also provided on the frame body, and the adapter and the air intake disk are connected by a flexible air pipe.

[0015] As a further technical solution of the utility model, a valve bracket is further provided on the frame body, and a V-shaped groove is provided in the valve bracket.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model fits the end clamping components at both ends to the two ends of the valve housing respectively, seals the joints by extrusion, and does not need to be fixed with bolts, thus saving time consumption when sealing the valve housing, thereby improving detection efficiency;

[0018] 2. In the utility model, when the compound threaded rod rotates, the end clamping components on the left and right sides are driven to move inward at the same time through the internal thread slider and the movable slide plate, so that both ends of the valve housing are sealed at the same time, further saving time consumption in the process of sealing the valve housing;

[0019] 3. In the utility model, a V-shaped groove is provided in the door bracket, and the valve housing can be supported and positioned by the valve bracket to prevent the fitting position of the end clamping assembly and the valve housing from being offset, thereby affecting the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0021] Figure 2 This utility model Figure 1 Schematic diagram of the bottom structure.

[0022] Figure 3 This utility model Figure 1 main view.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the transmission component in the utility model.

[0024] Figure 5 This utility model Figure 5 main view.

[0025] In the figure:

[0026] Frame body 1, slide groove 11, screw support plate 12, valve bracket 2, end clamping assembly 3, transmission assembly 4, compound threaded rod 41, gear 42, motor 43, adapter 5, flexible air pipe 6, air inlet disc 7. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-5 The utility model provides a single-layer cable support with high wind resistance and high stability and can adapt to complex terrain, including

[0029] A frame body 1, wherein both ends of the frame body 1 are movably connected with end clamping assemblies 3 that are symmetrically arranged, and the bottom of the end clamping assemblies 3 is transmission-connected with a transmission assembly 4;

[0030] The end clamping assembly 3 is mainly composed of a conical sealing end cover and a rubber sheet for sealing the connection, and the rubber sheet is fixed on the curved surface of the sealing end cover; a movable slide is also provided on one side of the sealing end cover, and an internal threaded slider is provided on the end of the movable slide away from the sealing end cover;

[0031] The transmission assembly 4 includes a compound threaded rod 41 , a gear 42 is fixed in the middle of the compound threaded rod 41 , and a motor 43 is provided on one side of the compound threaded rod 41 .

[0032] In this embodiment, a slide groove 11 is symmetrically opened on the inner side of the frame body 1 in a transverse direction, and the movable slide plate passes through the frame body 1 and is slidably connected to the inner side of the slide groove 11 .

[0033] In this embodiment, the threads at both ends of the compound threaded rod 41 have opposite rotation directions, and both ends of the compound threaded rod 41 are connected to the internal threaded sliders.

[0034] In this embodiment, a screw support plate 12 is further provided at the lower portion of the frame body 1. A plurality of screw support plates 12 are provided, and two are provided in a group. Each group of screw support plates 12 is respectively located on both sides of the slide groove 11 to convert circular motion into linear motion.

[0035] In this embodiment, the compound threaded rod 41 is movably connected to the screw support plate 12 through a bearing; the motor 43 is fixedly connected to the frame body 1; there are two gears 42, one is connected to the compound threaded rod 41, and the other is cooperatively connected to the motor 43; the torque of the motor 43 is transmitted to the compound threaded rod 41.

[0036] In this embodiment, the frame body 1 is further provided with an adapter 5 and an air intake disk 7, and the adapter 5 and the air intake disk 7 are connected by a flexible air pipe 6 to guide the compressed gas.

[0037] In this embodiment, a valve bracket 2 is further provided on the frame body 1, and a V-shaped groove is provided in the valve bracket 2 to position and support the pipelines at both ends of the valve housing.

[0038] By adopting the above technical solution, when testing the valve, the valve housing is first placed on the valve bracket 2, and the inlet and outlet pipes at both ends of the valve housing are located in the V-shaped grooves opened in the valve bracket 2, and then the motor 43 transmits power to the compound threaded rod 41 through the gear 42, so that the compound threaded rod 41 rotates, and then the circular motion is converted into linear motion through the transmission connection between the compound threaded rod 41 and the internal threaded slider, thereby driving the end clamping assemblies 3 at both ends to move closer to the middle until the end clamping assemblies 3 are tightly attached to the inlet and outlet pipe ends at both ends of the valve housing, and the two ends of the valve housing are sealed respectively, and the connection does not need to be fastened with bolts, saving preparation time before testing.

[0039] In this embodiment, a threaded connection pipe connected to a gas source is provided at the rear end of the adapter 5. The gas source is connected to the threaded connection pipe through a pipeline, and compressed gas is filled into the inner side of the valve housing through the gas source.

[0040] More specifically, a pressure gauge is fixed to the side of the adapter 5, and the pressure gauge is connected to the inner side of the adapter 5 for detecting the gas pressure inside the valve housing.

[0041] In this embodiment, a U-shaped slide groove is symmetrically provided on the inner side of the air inlet plate 7 .

[0042] As a further technical solution of the utility model, a U-shaped bracket for fixing the valve housing is provided at the lower part of the air inlet disc 7, and both ends of the U-shaped bracket pass through the inner side of the U-shaped slide groove.

[0043] As a further technical solution of the utility model, both ends of the U-shaped bracket are provided with threads that cooperate with nuts. After the valve housing is placed inside the U-shaped bracket, the two ends of the U-shaped bracket are passed through the U-shaped slide groove, and then nuts are installed at both ends of the U-shaped bracket to fix the valve housing to the air intake disk 7.

[0044] The working principle of the utility model is: when in use, first the U-shaped bracket is passed around the bottom of the valve shell, the upper opening of the valve shell is fitted with the air inlet disk 7, and the two ends of the U-shaped bracket pass through the U-shaped slide groove, the air inlet disk 7 is fitted and the U-shaped bracket is locked by the nut, and then the valve shell is placed in the V-shaped groove inside the valve bracket 2, and the motor 43 transmits power to the compound threaded rod 41 through the gear 42 to rotate the compound threaded rod 41, and then the circular motion is converted into linear motion through the transmission connection between the compound threaded rod 41 and the internal threaded slider, thereby driving the end clamping assemblies 3 at both ends to move closer to the middle until the end clamping assemblies 3 are tightly attached to the two ends of the valve shell, and the air source injects compressed gas into the valve shell through the pipeline, adapter 5, flexible air pipe 6 and air inlet disk 7 respectively, and then the air source valve is closed to check the pressure change of the barometer. A decrease in pressure indicates that the valve shell is leaking, and a constant pressure indicates that the valve shell has good sealing performance.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A valve housing sealing test device, characterized in that: include A frame body (1), wherein both ends of the frame body (1) are movably connected to symmetrically arranged end clamping assemblies (3), and the bottom of the end clamping assemblies (3) is transmission-connected to a transmission assembly (4); The end clamping assembly (3) is mainly composed of a conical sealing end cover and a rubber sheet for sealing the connection, and the rubber sheet is fixed on the curved surface of the sealing end cover; a movable slide is also provided on one side of the sealing end cover, and an internal threaded slider is provided on the end of the movable slide away from the sealing end cover; The transmission assembly (4) comprises a compound threaded rod (41), a gear (42) is fixed in the middle of the compound threaded rod (41), and a motor (43) is provided on one side of the compound threaded rod (41).

2. The valve housing sealing test device according to claim 1, characterized in that: A sliding groove (11) is symmetrically provided on the inner side of the frame body (1), and a movable slide plate passes through the frame body (1) and is slidably connected to the inner side of the sliding groove (11).

3. The valve housing sealing test device according to claim 1, characterized in that: The threads at both ends of the compound threaded rod (41) have opposite rotation directions, and both ends of the compound threaded rod (41) are matched and connected with the internal threaded slider.

4. The valve housing sealing test device according to claim 1, characterized in that: A screw support plate (12) is also provided at the lower part of the frame body (1), and a plurality of screw support plates (12) are provided, and two are provided in a group, and each group of screw support plates (12) is respectively located on both sides of the slide groove (11).

5. The valve housing sealing test device according to claim 3, characterized in that: The compound threaded rod (41) is movably connected to the screw support plate (12) through a bearing; the motor (43) is fixedly connected to the frame body (1); and two gears (42) are provided, one of which is connected to the compound threaded rod (41) and the other is cooperatively connected to the motor (43).

6. The valve housing sealing test device according to claim 1, characterized in that: The frame body (1) is also provided with an adapter (5) and an air intake disk (7), and the adapter (5) and the air intake disk (7) are connected via a flexible air pipe (6).

7. The valve housing sealing test device according to claim 1, characterized in that: The frame body (1) is also provided with a valve bracket (2), and a V-shaped groove is provided in the valve bracket (2).

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