Valve leakage detection jig

Abstract

The utility model belongs to the technical field of valve maintenance, and discloses a valve leakage detection jig. A valve is placed on the base, circulation openings are formed in the two sides of the valve, vent holes are formed in the base in a penetrating mode, the vent holes are communicated with the circulation openings, a positioning rod is inserted into the base, a pressing plate is installed at the upper end of the positioning rod, flanges are arranged in the circumferential direction of the circulation openings, and the pressing plate is connected to the upper sides of the flanges in a pressing mode. The problems that in the prior art, a valve is directly installed on a pipeline, reworking is likely to be conducted, and the construction progress is reduced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve maintenance technical field especially relates to a valve leakage detection fixture. BACKGROUND

[0002] Valve leakage rate test is an important test project of Guojia No. 1, and currently, the valve is usually installed on the process pipeline, and then leakage detection test is carried out, if the valve leakage rate is lower than the set standard, it will be directly put into use, if the detected value is higher than the set standard, it represents that the valve working state cannot reach the expected requirement, and the valve needs to be removed from the pipeline, the process of removal is time-consuming, the valve is directly installed on the process pipeline to carry out valve leakage rate test, and there is a probability of rework, which increases construction time and reduces construction progress. UTILITARY MODEL

[0003] The utility model aims at providing a valve leakage detection fixture, which solves the problem of rework with a probability and reduces construction progress when the valve is directly installed on the pipeline in the prior art.

[0004] To achieve this purpose, the utility model adopts the following technical scheme: the utility model provides a valve leakage detection fixture, which comprises a base, the valve is placed on the base, flow-through openings are formed on the two sides of the valve, an air hole is formed through the base, the air hole is communicated with the flow-through openings, a positioning rod is inserted into the base, a pressing plate is installed on the upper end of the positioning rod, a flange is arranged around the flow-through openings, and the pressing plate is pressed on the upper side of the flange.

[0005] Preferably, sliding grooves are formed in the base, the positioning rod is inserted into the sliding grooves, and the positioning rod slides along the sliding grooves.

[0006] Preferably, a sleeve is sleeved on the upper end of the positioning rod, the pressing plate is installed on the top of the sleeve, the upper end of the positioning rod is formed with a thread, a nut is screwed on the upper end of the positioning rod, the nut abuts against the pressing plate, a limiting rod is arranged at the bottom of the positioning rod, and the limiting rod abuts against the bottom surface of the base.

[0007] Preferably, four groups of sliding grooves are formed, and the length direction of the sliding grooves is radially parallel to the flange.

[0008] Preferably, the air hole and the center of the flange coincide, and the sliding grooves are formed around the air hole.

[0009] Preferably, four groups of supporting legs are formed in the lower side of the base, the base is placed on the ground, and a gap is formed between the lower side of the air hole and the ground.

[0010] Preferably, the base is made of metal.

[0011] Beneficial effects: The valve is placed on the base, the flange on the upper side of the valve is fixed by the pressing plate, the flow-through port on one side of the valve faces the air hole, at this time, the valve leakage rate test is carried out, the gas is poured into the flow-through port on the side of the valve which is not in contact with the base, the valve is closed, and whether the gas is discharged from the flow-through port on the other side to the air hole is detected, the valve can be quickly fixed by the valve leakage detection jig, the valve is detected before being installed on the pipeline, so that the valve installed on the pipeline can meet the standard of the leakage rate test, and the number of rework and repair is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a working schematic view of the valve leakage detection jig of the utility model;

[0013] Fig. 2 is a main view of the valve leakage detection jig of the utility model;

[0014] Fig. 3 is a bottom view of the valve leakage detection jig of the utility model.

[0015] In the figure: 1, base; 11, sliding groove; 12, air hole; 13, supporting leg; 2, valve; 21, flange; 22, flow-through port; 3, positioning rod; 31, limiting rod; 4, pressing plate; 5, sleeve; 6, nut. DETAILED DESCRIPTION

[0016] The utility model will be further described in detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0017] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0018] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "upper surface of" second feature includes that first feature is directly above and obliquely above second feature, or only indicates that first feature is higher than second feature in horizontal height. First feature "under", "below" and "under surface of" second feature includes that first feature is directly below and obliquely below second feature, or only indicates that first feature is lower than second feature in horizontal height.

[0019] In the description of the embodiment, the terms "upper", "lower", "right", "left", "horizontal", "vertical", and "orientation" or "position relationship" are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0020] Under the prior art, when the valve leakage detection test is carried out, the valve needs to be fixed to carry out detection, workers often directly install the valve on the process pipeline, and then directly carry out the leakage rate test, if the detection is qualified, it is directly put into use, if the detection is unqualified, the valve needs to be disassembled, and the valve is repaired, the steps of disassembling the valve through the flange are relatively cumbersome, so that the repair is relatively time-consuming, and the project progress is delayed.

[0021] In order to solve the above problems, as Figs. 1 to 3 shown, the utility model provides a valve leakage detection jig, including base 1, base 1 is placed valve 2, and the both sides of valve 2 form the flow-through port 22, and the air hole 12 is passed through and is set up on base 1, and the air hole 12 is communicated with flow-through port 22, and the positioning rod 3 is inserted and is connected on base 1, and the pressing plate 4 is installed on the positioning rod 3 upper end, and the flange 21 is circumferentially set up in flow-through port 22, and the pressing plate 4 is pressed and is connected on the flange 21 upside.

[0022] Through the valve leakage detection fixture, the purchased valve 2 can be directly prevented from being fixed on the base 1, one side of the through port 22 is directed to the air hole 12 on the base 1, then the valve 2 is fixed by the pressing plate 4, after the valve 2 is stably installed on the base 1, the valve leakage rate test is started, the gas is injected from the through port 22 away from the base 1, the valve 2 is closed, whether the gas is discharged from the valve 2 is detected through the air hole 12 on the base 1, and then whether the valve 2 meets the design requirements can be determined before the valve 2 is installed on the pipeline, so that the unqualified valve 2 can be quickly screened out, the fixing time can be shortened through the quick fixing of the pressing plate 4, and the valve 2 finally installed on the pipeline can be normally used without rework, and the construction progress is improved.

[0023] The base 1 is provided with a sliding groove 11, the positioning rod 3 is inserted into the sliding groove 11, the positioning rod 3 slides along the sliding groove 11, the position of the positioning rod 3 can be changed through the sliding groove 11, the pressing plate 4 on the positioning rod 3 can adapt to flanges 21 with different diameters, the adaptation ability of the valve leakage detection fixture is stronger, and the sliding groove 11 is provided with four groups, the length direction of the sliding groove 11 is parallel to the radial direction of the flange 21, the flange 21 is usually circular, the valve 2 can be fixed from each position around the flange 21, and the stability and convenience of fixing are improved.

[0024] The sleeve 5 is sleeved on the upper end of the positioning rod 3, the pressing plate 4 is installed on the top of the sleeve 5, the top end of the positioning rod 3 is formed with a thread, the nut 6 is screwed on the top end of the positioning rod 3, the nut 6 abuts against the pressing plate 4, and the limiting rod 31 is arranged at the bottom of the positioning rod 3.

[0025] Different heights of the sleeve 5 can be replaced, the position of the upper pressing plate 4 of the sleeve 5 can be changed, different valves 2 with different flange 21 thicknesses can be adapted, the valve leakage detection fixture has higher detection efficiency and can adapt to more different models, when the nut 6 abuts against the pressing plate 4, the lower limiting rod 31 also abuts against the lower surface of the base 1.

[0026] The air hole 12 coincides with the center position of the flange 21, and the sliding groove 11 is arranged in the circumferential direction of the air hole 12. The air hole 12 is directly directed to the through port 22, if the valve 2 leaks, the gas in the through port 22 directly enters the air hole 12, the gas leakage can be directly detected through the instrument, and the test personnel can detect conveniently.

[0027] The base 1 is placed on the ground, and the lower side of the vent hole 12 forms a gap with the ground.

[0028] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to enumerate all the implementation modes. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A valve leak detection fixture, comprising: The utility model provides a valve fixing base, including base (1), the valve (2) is placed on base (1), and both sides of valve (2) form and pass through the opening (22) of circulation, and the air hole (12) is set up on base (1), and the air hole (12) is communicated with the opening (22) of circulation, and the positioning rod (3) is inserted on base (1), and the pressing plate (4) is installed on the upper end of positioning rod (3), and the flange (21) is circumferentially arranged on the opening (22) of circulation, and the pressing plate (4) is pressed on the upside of flange (21).

2. The valve leak detection fixture of claim 1, wherein, The sliding groove (11) is set up on the base (1), the positioning rod (3) is inserted in the sliding groove (11), and the positioning rod (3) slides along the sliding groove (11).

3. The valve leak detection fixture of claim 2, wherein, The sleeve (5) is sleeved on the upper end of positioning rod (3), the pressing plate (4) is installed on the top of sleeve (5), the top of positioning rod (3) is formed with screw threads, the nut (6) is screwed on the top of positioning rod (3), the nut (6) is in abutment with the pressing plate (4), the limiting rod (31) is arranged on the bottom of positioning rod (3), and the limiting rod (31) is in abutment with the bottom surface of base (1).

4. The valve leak detection tool of claim 3, wherein, The sliding groove (11) is set up with four groups, and the length direction of sliding groove (11) is radially parallel with flange (21).

5. The valve leak detection tool of claim 4, wherein, The air hole (12) coincides with the center position of flange (21), and the sliding groove (11) is set up in the circumferential direction of air hole (12).

6. The valve leak detection fixture of claim 1, wherein, The four groups of supporting legs (13) are set up on the bottom of base (1), the base (1) is placed on the ground, and the air hole (12) is in clearance with the ground.

7. The valve leak detection fixture of claim 1, wherein, The base (1) is made of metal.

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