Jig for valve quality inspection

Abstract

The utility model relates to the field of valve detection, in particular to a valve quality inspection jig which comprises a first closed jig and a second closed jig, a detection support is arranged on the outer side of the first closed jig and the outer side of the second closed jig, a side thread lantern ring is installed at the lower end of the detection support, and an upper thread lantern ring is arranged on the upper surface of the detection support. A detection jig is arranged in the upper threaded lantern ring and comprises a push rod and an outer sleeve, a piston head is installed at the position, located in the outer sleeve, of the lower end of the push rod, external threads are formed in the outer side of the outer sleeve, an upper plug is installed at the lower end of the outer sleeve, and a through hole is formed between the upper plug and the outer sleeve. After the first sealing jig and the second sealing jig are used for sealing a water inlet and a water outlet of the valve, the push rod integrally controls the piston head to be pushed in the outer sleeve, liquid stored in the piston head is extruded towards the interior of the valve body through the through hole in the upper plug head, and therefore the overall sealing performance of the valve body can be detected.

Description

Technical Field

[0001] The utility model relates to the field of valve detection, in particular to a fixture for valve quality inspection. Background Art

[0002] Valves are important control components in fluid conveying systems and are widely used in petrochemical, thermal power, nuclear power and other industries. Accurate detection of valve leakage plays a vital role in industrial production. The main pressure leak detection methods for valves at home and abroad are: bubble method, soap bubble method, special tracer material method, water pressure method, ultrasonic method, pressure drop method, and valve internal leakage temperature method.

[0003] However, due to the complex structure of the water pressure detection seals currently on the market, the installation of the valve is required during the detection. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a valve quality inspection fixture, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solutions: a valve quality inspection jig, comprising a first closed jig and a second closed jig, the outer sides of the first closed jig and the second closed jig are provided with detection brackets, the lower ends of the detection brackets are installed with side threaded collars, the upper surface of the detection brackets is provided with upper threaded collars, the interior of the upper threaded collars is provided with a detection jig, the detection jig comprises a push rod and an outer sleeve, the lower end of the push rod is located inside the outer sleeve and a piston head is installed, the outer side of the outer sleeve is provided with external threads, the lower end of the outer sleeve is provided with an upper plug, and a through hole is provided between the upper plug and the outer sleeve.

[0006] As a further solution of the utility model: the outer ends of the first closed fixture and the second closed fixture are located inside the side threaded ring and are provided with adjustment threads, and the opposite surfaces of the first closed fixture and the second closed fixture are both installed with anti-slip pads.

[0007] As a further solution of the utility model: a conical plug is installed on the side surface of the anti-slip pad, and a rotating handle is installed on the outer side section of the first closing fixture and the second closing fixture.

[0008] As a further solution of the utility model: the external thread is engaged and movably connected with the upper threaded collar, and a through hole is opened between the upper plug and the outer sleeve.

[0009] As a further solution of the utility model: the piston head is a rubber component, and the side threaded collar is fixedly connected to the detection bracket.

[0010] As a further solution of the utility model: the first closed fixture and the second closed fixture are both movably connected by meshing with the side threaded collar through the adjusting thread.

[0011] As a further solution of the utility model: the detection bracket is a U-shaped component.

[0012] As a further solution of the present invention: the rotating handle is fixedly connected to both the first closing fixture and the second closing fixture.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. After aligning the first closing fixture and the second closing fixture with the water inlet and outlet of the valve, the push rod as a whole controls the piston head to push inside the outer sleeve, and the liquid stored inside is squeezed into the inside of the valve body through the through hole inside the upper plug head, so that the overall sealing of the valve body can be detected.

[0015] 2. The conical plug and the upper plug head are cone-shaped and can be applied to the water inlet and outlet and valve seat socket positions of valves of different sizes, thereby ensuring the applicable scope of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a valve quality inspection fixture;

[0017] Figure 2 This is a structural schematic diagram of a detection fixture in a valve quality inspection fixture;

[0018] Figure 3 This is a schematic diagram of the structure of a detection bracket in a valve quality inspection fixture;

[0019] Figure 4 This is a structural schematic diagram of a closed fixture in a valve quality inspection fixture;

[0020] Figure 5 The figure is a front view of the entire device in a valve quality inspection fixture.

[0021] In the figure: 1. first closing fixture; 2. second closing fixture; 3. detection bracket; 4. detection fixture; 5. tapered plug; 6. adjustment thread; 7. rotating handle; 8. anti-slip pad; 301. upper threaded collar; 302. side threaded collar; 401. push rod; 402. outer sleeve; 403. piston head; 404. external thread; 405. upper plug head. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-5 As shown, the present embodiment provides a valve quality inspection jig, including a first closed jig 1 and a second closed jig 2, a detection bracket 3 is arranged on the outside of the first closed jig 1 and the second closed jig 2, the detection bracket 3 is a U-shaped component, a side threaded collar 302 is installed at the lower end of the detection bracket 3, the side threaded collar 302 is fixedly connected to the detection bracket 3, an upper threaded collar 301 is opened on the upper surface of the detection bracket 3, a detection jig 4 is arranged inside the upper threaded collar 301, and the detection jig 4 It includes a push rod 401 and an outer sleeve 402. The lower end of the push rod 401 is located inside the outer sleeve 402 and a piston head 403 is installed. The piston head 403 is a rubber component. The outer side of the outer sleeve 402 is provided with an external thread 404. The external thread 404 is engaged and movably connected with the upper threaded ring 301. The lower end of the outer sleeve 402 is provided with an upper plug 405. A through hole is provided between the upper plug 405 and the outer sleeve 402. A through hole is provided between the upper plug 405 and the outer sleeve 402.

[0024] like Figure 2-3 As shown, in this embodiment, the outer ends of the first closed jig 1 and the second closed jig 2 are located inside the side threaded ring 302 and are provided with an adjusting thread 6. The first closed jig 1 and the second closed jig 2 are engaged and movably connected with the side threaded ring 302 through the adjusting thread 6. The opposite surfaces of the first closed jig 1 and the second closed jig 2 are installed with anti-slip pads 8, and the side surfaces of the anti-slip pads 8 are installed with conical plugs 5. The outer sections of the first closed jig 1 and the second closed jig 2 are installed with rotating handles 7, and the rotating handles 7 are fixedly connected to the first closed jig 1 and the second closed jig 2.

[0025] The working principle of the utility model is: when in use, the first closing fixture 1 and the second closing fixture 2 are respectively placed at the water inlet and water outlet positions of the valve, and the adjusting threads 6 on the outside of the first closing fixture 1 and the second closing fixture 2 are controlled to mesh and rotate in the side threaded collar 302 inside the detection bracket 3 by rotating the rotating handle 7 respectively, and after the tapered plug 5 is controlled to be inserted into the inside of the water inlet and outlet as a whole, the water inlet and water outlet are completely sealed, and then the detection fixture 4 inside the upper threaded collar 301 is meshed and rotated as a whole, and the upper plug head 405 at the lower end of the detection fixture 4 is inserted into the valve seat position of the valve as a whole, and the push rod 401 is used to control the piston head 403 to push inside the outer sleeve 402, so that the liquid stored inside is squeezed into the inside of the valve body through the through hole inside the upper plug head 405, so that the overall sealing of the valve body can be detected.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0027] 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 quality inspection jig, comprising a first sealing jig (1) and a second sealing jig (2), characterized in that: A detection bracket (3) is arranged on the outer side of the first closed fixture (1) and the second closed fixture (2); a side threaded collar (302) is installed at the lower end of the detection bracket (3); an upper threaded collar (301) is provided on the upper surface of the detection bracket (3); a detection fixture (4) is arranged inside the upper threaded collar (301); the detection fixture (4) comprises a push rod (401) and an outer sleeve (402); the lower end of the push rod (401) is located inside the outer sleeve (402) and is provided with a piston head (403); the outer side of the outer sleeve (402) is provided with an external thread (404); an upper plug (405) is installed at the lower end of the outer sleeve (402); a through hole is provided between the upper plug (405) and the outer sleeve (402).

2. A valve quality inspection jig according to claim 1, characterized in that: The outer ends of the first closed jig (1) and the second closed jig (2) are provided with adjustment threads (6) located inside the side threaded collar (302), and the opposing surfaces of the first closed jig (1) and the second closed jig (2) are both provided with anti-slip pads (8).

3. A valve quality inspection jig according to claim 2, characterized in that: A conical plug (5) is installed on the side surface of the anti-slip pad (8), and a rotating handle (7) is installed on the outer side sections of the first closing fixture (1) and the second closing fixture (2).

4. A valve quality inspection jig according to claim 1, characterized in that: The external thread (404) is meshed and movably connected with the upper threaded collar (301).

5. A valve quality inspection jig according to claim 1, characterized in that: The piston head (403) is a rubber material component, and the side threaded collar (302) is fixedly connected to the detection bracket (3).

6. A valve quality inspection jig according to claim 2, characterized in that: The first closing fixture (1) and the second closing fixture (2) are both movably connected by meshing with the side threaded collar (302) via the adjusting thread (6).

7. A valve quality inspection jig according to claim 1, characterized in that: The detection bracket (3) is a U-shaped component.

8. A valve quality inspection jig according to claim 3, characterized in that: The rotating handle (7) is fixedly connected to both the first sealing fixture (1) and the second sealing fixture (2).

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