Valve pressure testing device

Abstract

The utility model relates to the technical field of valve detection, and discloses a valve pressure testing device which comprises a support, a workbench and an air pipe, the workbench is installed on the support, and a pressure testing hole is formed in the workbench; the air pipe is arranged below the workbench, one end of the air pipe is connected with the pressure test hole, and the other end of the air pipe is used for being connected with an air source; during pressure testing, a valve is fixed to the workbench in a sealed mode, and the pressure testing hole is communicated with the valve element sealing space on one side of the valve. The device is simple in structure, the support can be fixed on a loading site, the air source can adopt field instrument air source wind, so that the valve is subjected to air tightness test on the loading site, the valve does not need to be carried to a special pressure test site for pressure test detection, time and labor are saved, after pressure test detection, the qualified valve can be put into use in time, and the efficiency is improved. The valve resetting time is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve detection technical field, especially a valve pressure test device. BACKGROUND

[0002] Crane loading is a mode of loading and unloading operation by using a crane pipe. In crane loading, one crane position corresponds to one loading and unloading position, the crane pipe is a complete set of components for connecting materials at the end of a pipeline and a loading and unloading vehicle, one crane pipe corresponds to one control valve, and the flow of medium in the crane pipe is controlled by operating the control valve. The sealing level of the valve is required to be high, and situations such as internal leakage of the valve and wear of the valve core requiring replacement of the sealing gasket often occur. In the loading site, in order to avoid affecting the loading progress, the valve is generally required to be reset in a tight time, but the valve with a replaced sealing gasket cannot be tested for sealing at present, and the valve with a replaced sealing gasket needs to be transported to a special pressure test site for pressure test detection, which is time-consuming and laborious, resulting in that the valve cannot be put into use in time. SUMMARY

[0003] The utility model aims at providing a valve pressure test device to test the valve and save the valve reset time.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The valve pressure test device comprises:

[0006] a support;

[0007] a workbench installed on the support, wherein a pressure test hole is formed in the workbench; and

[0008] a gas pipe arranged below the workbench, wherein one end of the gas pipe is connected to the pressure test hole, and the other end of the gas pipe is used for connecting a gas source;

[0009] During pressure test, the valve is sealed and fixed on the workbench, and the pressure test hole is in communication with the valve core sealing space on one side of the valve.

[0010] In some embodiments, the valve pressure test device further comprises a pressure detection element installed on the gas pipe.

[0011] In some embodiments, the workbench is provided with a mounting hole for mounting the valve, and the workbench and the valve are detachably connected.

[0012] In some embodiments, the mounting hole is provided with a plurality of mounting holes, and the plurality of mounting holes are arranged on the outer circumferential side of the pressure test hole.

[0013] In some embodiments, the support is provided with a hook.

[0014] In some embodiments, the support frame comprises a first frame body and a second frame body, the first frame body and the second frame body are respectively rotatably connected to opposite sides of the workbench, and a side of the first frame body away from the workbench is detachably connected with the second frame body.

[0015] In some embodiments, the first frame body comprises a first connecting rod and a second connecting rod, the first connecting rod is rotatably mounted to a lower surface of the workbench, one end of the second connecting rod is fixedly connected with the first connecting rod, and the other end of the second connecting rod is clamped with the second frame body.

[0016] In some embodiments, the second connecting rod is a telescopic rod.

[0017] In some embodiments, the second frame body comprises a third connecting rod and support rods connected to both ends of the third connecting rod, the workbench is rotatably assembled between the two support rods, the third connecting rod is arranged below the workbench, one end of the second connecting rod away from the first connecting rod is provided with a clamping portion for clamping on the third connecting rod, and the second connecting rod is clamped with the third connecting rod.

[0018] Compared with the prior art, the valve pressure test device has the beneficial effects that:

[0019] The valve pressure test device comprises a support frame, a workbench and a gas pipe, the workbench is mounted on the support frame, a pressure test hole is formed in the workbench, and the pressure test hole and a gas source are connected through the gas pipe. During pressure test, the valve is sealed and fixed on the workbench, and the pressure test hole is in communication with a valve core sealing space on one side of the valve. The valve core sealing space on one side of the valve is pressurized by using the gas source, water is sprayed into the valve core space on the other side of the valve after a certain pressure maintaining time, and the pressure test condition is observed by water test. After water spraying, the number of bubbles appearing in the valve core space on the other side of the valve is observed, if the number of bubbles appearing in the water in the valve core space on the other side of the valve exceeds a set range within a set time, it is indicated that the valve leaks and the air tightness is unqualified, if the number of bubbles appearing in the water in the valve core space on the other side of the valve is within the set range within the set time, it is indicated that the valve does not leak and the air tightness is qualified, thereby the air tightness of the valve is detected. The structure of the application is simple, the support frame can be fixed on a loading site, the gas source can use a site instrument gas source, thereby the air tightness of the valve can be tested at the loading site, the valve does not need to be carried to a special pressure test site for pressure test and detection, time and labor are saved, after pressure test and detection, the valve that passes the detection can be put into use in time, and valve reset time is saved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1is a structure schematic view of the valve pressure testing device;

[0021] Figure 2 is Figure 1 a front view schematic view;

[0022] Figure 3 is Figure 1 a top view schematic view;

[0023] Figure 4 is Figure 1 a side view schematic view.

[0024] Reference numerals in the drawings:

[0025] 1, support; 11, first frame body; 111, first connecting rod; 112, second connecting rod; 1121, clamping part; 12, second frame body; 121, third connecting rod; 122, support rod; 1221, hook; 2, workbench; 21, pressure testing hole; 22, mounting hole; 23, sleeve; 3, air pipe; 4, pressure detection element. DETAILED DESCRIPTION

[0026] In the description of the present application, it should be explained that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The specific embodiments of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0029] Reference Figures 1-4The utility model discloses an embodiment provides a valve pressure test device, including support 1, workstation 2 and trachea 3, workstation 2 installs on support 1, the workstation 2 is seted with pressure test hole 21, and pressure test hole 21 is set through workstation 2, trachea 3 is located at the below of workstation 2, one end of trachea 3 is connected with pressure test hole 21, and the other end of trachea 3 is used for connecting gas source.

[0030] When pressure testing, the valve is sealed and fixed on the workstation 2, and the pressure test hole 21 is in communication with the valve core sealing space on one side of the valve. When the valve is fixed on the workstation 2, the opening of the valve core sealing space on this side of the valve is arranged downward and opposite to the workstation 2, and the opening of the valve core space on the other side of the valve is arranged upward, so as to facilitate water storage in the valve core space on the other side.

[0031] When the valve is in a closed state, the valve core spaces on both sides of the valve are not in communication. The gas source is used to pressurize the valve core sealing space on one side of the valve, water is sprayed into the valve core space on the other side of the valve after a certain time (3-5 minutes), and the pressure test is observed by water. After spraying water, the number of air bubbles appearing in the valve core space on the other side of the valve is observed. If the number of air bubbles appearing in the water in the valve core space on the other side of the valve exceeds the set range within the set time, it indicates that the valve leaks and the air tightness is unqualified. If the number of air bubbles appearing in the water in the valve core space on the other side of the valve is within the set range within the set time, it indicates that the valve does not leak and the air tightness is qualified, thereby completing the detection of the air tightness of the valve.

[0032] The structure of the application is simple, the support 1 can be fixed on the loading site, and the gas source can use the instrument gas source wind on the site, so that the air tightness of the valve can be tested on the loading site, without the need to transport the valve to a special pressure test place for pressure test detection, saving time and effort. After pressure test detection, the qualified valve can be put into use in time, saving valve reset time.

[0033] It should be noted that the set value of the pressurizing pressure and the set range of the number of air bubbles when the air tightness is qualified in the application are determined according to the sealing grade of the valve. For example, the pressure is 6MPa, the set time is 1min, and the set range of the number of air bubbles within the set time is less than 10, indicating that the air tightness is qualified.

[0034] It should be noted that the sealing and fixing between the valve and the workbench 2 specifically refers to sealing the space between the valve and the workbench. There are various implementation forms, for example, in some embodiments, a sealing gasket is arranged on the sealing surface between the valve and the workbench 2 to meet the pressure maintaining requirement during the valve pressure test. The sealing gasket is arranged between the opening of the valve core sealing space on one side of the valve and the workbench 2 and located at the outer periphery of the opening, so as to seal the space between the opening of the valve core sealing space on one side of the valve and the workbench, and the space is communicated with the pressure test hole and the valve core sealing space, so that the gas discharged through the pressure test hole completely enters the valve core sealing space, avoiding the gas from leaking through the gap between the valve and the workbench 2 to affect the accuracy of the air tightness test result.

[0035] It should be noted that the water injection into the valve core space on the other side of the valve can be achieved by directly pouring water from the bucket into the valve core space, or by connecting a water pipe to the water source on the site.

[0036] Referring to Figure 1 In some embodiments, the valve pressure test device further comprises a pressure detection element 4 installed on the air pipe 3. The pressure detection element 4 detects the air pressure in the air pipe 3, which facilitates the air source to stop supplying air when the air pressure reaches the set value, so that the air pressure meets the pressure test standard requirement of the pneumatic valve. The pressure detection element 4 is a pressure gauge, which can directly observe the detected pressure value.

[0037] Referring to Figures 1-4 In some embodiments, the workbench 2 is in the form of a plate. The workbench 2 is provided with mounting holes 22 for mounting the valve. The workbench 2 and the valve are detachably connected, which facilitates the dismounting and mounting of the valve on the workbench 2. The mounting holes 22 are threaded holes, and the valve and the workbench 2 are connected by fasteners. The fasteners are bolts, screws, etc. The mounting holes 22 are arranged on the outer periphery of the pressure test hole 21, which ensures the stability of the valve mounted on the workbench 2. Referring to Figure 1 As shown in the figure, the mounting holes 22 are arranged in the form of a quadrilateral.

[0038] In some embodiments, the bracket 1 is provided with a hook 1221, which facilitates the hanging of the bracket 1 on the protective rail on the site.

[0039] Referring to Figures 1-4As shown, in some embodiments, the support 1 comprises a first frame 11 and a second frame 12, the first frame 11 and the second frame 12 are respectively rotatably connected at opposite sides of the workbench 2, and the first frame 11 is detachably connected with the second frame 12 at a side away from the workbench 2. A hook 1221 is arranged on the second frame 12. Since the first frame 11 and the second frame 12 are both rotatable relative to the workbench 2, and the first frame 11 is detachably connected with the second frame 12, it is convenient to fold and store the workbench 2. Specifically, in use, the workbench 2 is rotated to open relative to the second frame 12 and the first frame 11, so that the workbench 2 changes from a vertical state to a horizontal state, and then the side of the first frame 11 away from the workbench 2 is connected with the second frame 12, so that the first frame 11, the second frame 12 and the workbench 2 form a stable triangular structure, so that the workbench 2 can be stably kept in the horizontal state, and it is convenient to place the valve on the workbench 2 for testing. After the valve is tested, the valve is removed from the workbench 2, and then the connection between the first frame 11 and the second frame 12 is disconnected, and the workbench 2 is rotated relative to the first frame 11 and the second frame 12, so that the workbench 2 changes from the horizontal state to the vertical state. At this time, the workbench 2 and the first frame 11 are respectively attached to the second frame 12, which is convenient for storing and placing the whole device and reduces the overall space occupation.

[0040] Referring to Figures 1-4 As shown, in some embodiments, the first frame 11 comprises a first connecting rod 111 and a second connecting rod 112, the first connecting rod 111 is rotatably mounted on the lower surface of the workbench 2, one end of the second connecting rod 112 is fixedly connected with the first connecting rod 111, and the other end of the second connecting rod 112 is connected with the second frame 12. The second connecting rod 112 is connected with the second frame 12, which facilitates the connection and disconnection between the first frame 11 and the second frame 12. The first connecting rod 111 is arranged at the edge position of the workbench 2 and extends along the edge length direction of the workbench 2, and the second connecting rod 112 can be arranged in plurality, and the plurality of second connecting rods 112 are arranged at intervals along the length direction of the first connecting rod 111. When the workbench 2 is in the horizontal state, the plurality of second connecting rods 112 provide stable support for the workbench 2.

[0041] Referring to Figures 1-4 As shown, in some embodiments, a sleeve 23 is arranged at the edge position of the workbench 2, the first connecting rod 111 is rotatably mounted in the sleeve 23, and a plurality of second connecting rods 112 are arranged at both sides of the sleeve 23 to prevent the first connecting rod 111 from escaping from the sleeve 23. In other embodiments, the first connecting rod 111 can also be connected with the workbench 2 through a bearing.

[0042] In order to further reduce the overall space occupied by the device when the workbench 2 is in the storage and folding state, in some embodiments, the second connecting rod 112 is a telescopic rod. The length of the second connecting rod 112 is adjusted by telescoping, so that the length of the second connecting rod 112 is adapted to keep the workbench 2 in a horizontal state.

[0043] Referring to Figures 1-4 As shown in the drawings, in some embodiments, the second frame body 12 includes a third connecting rod 121 and support rods 122 connected at both ends of the third connecting rod 121, and the workbench 2 is rotatably assembled between the two support rods 122, the third connecting rod 121 is arranged below the workbench 2, and the end of the second connecting rod 112 away from the first connecting rod 111 is provided with a clamping portion 1121 for clamping on the third connecting rod 121, and the second connecting rod 112 is clamped with the third connecting rod 121. The workbench 2 is rotatably connected with the support rod 122 through a bearing. The third connecting rod 121 and the support rod 122 are fixedly welded, and the third connecting rod 121 and the support rod 122 are arranged perpendicular to each other. The end of the support rod 122 is provided with a hook 1221, and the support rod 122 is hung on the rail at the loading site through the hook 1221, so that the second frame body 12 is hung on the rail, and the rail provides support for the second frame body 12, facilitating the installation of the whole pressure testing device, and ensuring the stability of the bracket 1. The clamping portion 1121 can be a clamping groove provided at the end of the first connecting rod 111, and the shape of the groove is adapted to the third connecting rod 121, so that the third connecting rod 121 can be clamped in the clamping groove. The clamping portion 1121 can be integrally formed with the first connecting rod 111, or can be a separate component fixed to the end of the first connecting rod 111, and the clamping portion 1121 and the first connecting rod 111 can be fixed by welding or fasteners such as screws. For example, the clamping portion 1121 can be arc-shaped, and the concave side of the arc-shaped clamping portion 1121 forms a clamping groove that can be clamped on the third connecting rod 121.

[0044] The valve pressure testing device of the utility model not only can detect unqualified valve, avoided valve to appear leakage and other problems in use process, still can test valve that has been repaired, leakproofness confirmation.

[0045] The working process of the utility model is as follows:

[0046] The valve is fixed by four bolts on the workbench 2, the opening of the valve core sealing space on one side of the valve is opposite to the workbench 2, and the opening of the valve core space on the other side is upwardly open. A sealing gasket is additionally arranged on the sealing surface between the valve and the workbench 2 to meet the pressure maintaining during the pressure test of the valve. The valve core sealing space is pressurized by opening the hand valve of the gas source, water is sprayed into the valve core space on the other side of the valve after a certain time (3-5 minutes) of pressure maintaining, and the pressure test condition is observed through the water test. After the water is sprayed, the number of bubbles appearing in the valve core space on the other side of the valve is observed, if the number of bubbles appearing in the water in the valve core space on the other side of the valve exceeds the set range within the set time, it is indicated that the valve leaks and the air tightness is unqualified, if the number of bubbles appearing in the water in the valve core space on the other side of the valve is within the set range within the set time, it is indicated that the valve does not leak and the air tightness is qualified, so that the air tightness of the valve is detected.

[0047] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should be considered as the protection scope of the present application.

Claims

1. A valve pressure testing device, characterized by, The utility model relates to a valve pressure testing device, which comprises: a support; a workbench mounted on the support, the workbench being provided with a pressure testing hole; a gas pipe arranged below the workbench, one end of the gas pipe being connected to the pressure testing hole and the other end of the gas pipe being used to connect to a gas source; when pressure testing, a valve is sealed and fixed on the workbench and the pressure testing hole is in communication with a valve core sealing space on one side of the valve. The valve pressure testing device further comprises a pressure detection element mounted on the gas pipe.

2. The valve pressure testing device of claim 1, wherein, The workbench is provided with a mounting hole used to mount the valve, and the workbench and the valve are detachably connected.

3. The valve pressure testing device of claim 1, wherein, The mounting hole is provided with a plurality of mounting holes arranged on the outer circumferential side of the pressure testing hole.

4. The valve pressure testing device of claim 3, wherein, The support is provided with a hook.

5. The valve pressure testing device of claim 1, wherein, The support comprises a first support body and a second support body, the first support body and the second support body being respectively rotatably connected to opposite sides of the workbench, and the side of the first support body away from the workbench being detachably connected to the second support body.

6. The valve pressure testing device of claim 1, wherein, The first support body comprises a first connecting rod and a second connecting rod, the first connecting rod being rotatably mounted to the lower surface of the workbench, one end of the second connecting rod being fixedly connected to the first connecting rod, and the other end of the second connecting rod being clamped to the second support body.

7. The valve pressure testing device of claim 6, wherein, The second connecting rod is a telescopic rod.

8. The valve pressure testing device of claim 7, wherein, The second support body comprises a third connecting rod and support rods connected to both ends of the third connecting rod, the workbench being rotatably assembled between the two support rods, the third connecting rod being arranged below the workbench, and the end of the second connecting rod away from the first connecting rod being provided with a clamping portion used to clamp the third connecting rod, the second connecting rod being clamped to the third connecting rod.

9. The valve pressure testing device of claim 7, wherein, ​

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