Detection tool for flowmeter

Abstract

The invention provides a detection tool for a flowmeter, and relates to the technical field of detection equipment. The detection tool comprises a supporting piece, a first testing pipeline, a second testing pipeline and an air tightness testing piece, the supporting piece supports a flow meter to be tested, the flow meter to be tested comprises a first end and a second end, the first testing pipeline is arranged on one side of the supporting piece and comprises a third end, and the second testing pipeline comprises a second end and a third end. The third end part is hermetically connected with the first end part to form a first sealed space; the second testing pipeline is arranged on the other side of the supporting piece, the second testing pipeline comprises a fourth end part, and the fourth end part and the second end part are connected in a sealed mode to form a second sealed space; and the air tightness test piece is selectively communicated with the first sealed space and / or the second sealed space. The air tightness of the sealed space can be tested, and the test precision is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of detection equipment, and in particular, to a detection tool for a flow meter. Background Art

[0002] An ultrasonic flow meter is an instrument that measures the flow of gas by detecting the gas flow rate in a metering pipeline. It usually needs to be tested before it is put into use, for example, the air tightness of the flow meter's clamping must be tested.

[0003] To test the air tightness of the meter under test, a valve is usually installed at the front end of the front straight pipe section and the rear end of the rear straight pipe section of the meter testing station. After the meter under test is installed, the front and rear valves are closed to form a closed space. By injecting or extracting air into or out of the space, a pressure difference is formed between the space and the atmosphere. By detecting whether the pressure rises or falls, it is determined whether the air tightness of the meter under test meets the standard. However, the closed space formed by the two valves includes the volume of the front and rear straight pipe sections, and the overall volume is large. When there is only a slight leak, the pressure gauge changes very little in a short period of time, and it is difficult to determine whether there is a leak in a short period of time. Summary of the invention

[0004] In view of the above problems, an embodiment of the present application provides a detection tool for a flow meter to improve the detection efficiency of the air tightness test at the clamping point of the flow meter to be tested.

[0005] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0006] The present application embodiment provides a detection tool for a flow meter, which includes:

[0007] A support member, the support member is used to support the flow meter to be tested, the flow meter to be tested includes a first end portion and a second end portion which are arranged opposite to each other;

[0008] A first test pipeline, the first test pipeline is arranged at one side of the support member, and the first test pipeline includes a third end portion, the third end portion can be sealed and connected with the first end portion to form a first sealed space;

[0009] a second test pipeline, the second test pipeline is arranged on the other side of the support member, and the second test pipeline includes a fourth end, the fourth end can be sealed and connected with the second end to form a second sealed space; an airtight test piece, the airtight test piece is selectively connected with the first sealed space and / or the second sealed space.

[0010] In a possible implementation, the airtightness test piece includes a pressure gauge, and the pressure gauge is selectively connected to the first sealed space and / or the second sealed space;

[0011] Alternatively, the air tightness test pieces include a control valve and a pressure gauge, the control valve includes a first connection end and a second connection end, the first connection end is selectively connected to the first sealed space / or the second sealed space, and the second connection end is connected to the pressure gauge.

[0012] In a possible implementation, the test tool further includes a first valve and a second valve, the first valve is disposed in the first test pipeline, and the second valve is disposed in the second test pipeline;

[0013] The control valve further includes a third connection end; the third connection end is selectively connected to the corresponding first test pipeline and the second test pipeline.

[0014] In a possible implementation, when the first valve is closed, the second valve is closed, and the connection between the first connection end and the corresponding first sealed space and / or the second sealed space is disconnected, the third connection end is selectively connected to the corresponding first test pipeline and the second test pipeline, and the detection tool is used to detect the air tightness of the flow meter to be tested.

[0015] In a possible implementation, when the third connection end is disconnected from the corresponding first test pipeline and the second test pipeline, and the first connection end is selectively connected to the first sealed space and / or the second sealed space, the detection tool can be used to detect the air tightness of the first sealed space and / or the second sealed space;

[0016] Alternatively, when the first valve and the second valve are opened, the detection tool can be used to detect the flow performance of the flow meter to be tested.

[0017] In a possible implementation, the first test pipeline and the second test pipeline are respectively provided with connection flanges at one end facing the support member, and the connection flanges are sealed and connected to the flow meter to be tested via a sealing ring;

[0018] The sealing ring, the connecting flange and the flow meter to be tested form the sealed space;

[0019] The connecting flange connected to the first test pipeline constitutes the third end, and the connecting flange connected to the second test pipeline constitutes the fourth end.

[0020] In a possible implementation, the sealing rings include two, and the two sealing rings are sleeved on each other;

[0021] The area between the two sealing rings, the connecting flange and the flow meter to be tested form the sealed space;

[0022] Alternatively, the connecting flange is provided with a communicating hole, and the communicating hole is communicated with the sealing space;

[0023] The third connection end is communicated with the sealed space through the communication hole, or the third connection end is communicated with the communication hole through a connection pipe.

[0024] In a possible implementation, two mounting grooves are arranged on the end surface of the connecting flange facing the flow meter to be tested, a sealing ring is arranged in each mounting groove, and the sealing ring protrudes from the mounting groove;

[0025] The communicating hole is located between the two mounting grooves.

[0026] In a possible implementation manner, the airtightness test piece is disposed in at least one of the first test pipeline and the second test pipeline.

[0027] In a possible implementation, the detection tool further includes a support platform, the first test pipeline is slidably disposed on the support platform via a first connecting member, and the second test pipeline is fixedly connected to the support platform via a second connecting member;

[0028] The detection tool also includes a driving member, which is arranged on the supporting platform, and an output end of the driving member is connected to the first connecting member.

[0029] In the detection tooling for flowmeter provided in the embodiment of the present application, the airtightness test piece is directly and selectively connected to the first sealed space and / or the second sealed space, and can quickly respond to the pressure change in the sealed space. When a leak occurs, even if the leakage is small, the airtightness test piece can be used to promptly and effectively determine whether the first sealed space and / or the second sealed space has leaked, thereby achieving instant feedback on the leak and improving the detection efficiency of the detection tooling.

[0030] In addition to the technical problems solved by the embodiments of the present application, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the detection tooling for the flow meter provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of the structure of a detection tool for a flow meter provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of the internal structure of a detection tool for a flow meter provided in an embodiment of the present application;

[0034] Figure 3 A partial schematic diagram of the internal structure of a detection tool for a flow meter provided in an embodiment of the present application;

[0035] Figure 4 A schematic diagram of a first working state of a control valve provided in an embodiment of the present application;

[0036] Figure 5 A schematic diagram of the second working state of the control valve provided in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 1000: Inspection tooling;

[0039] 100: support member;

[0040] 200: flow meter to be tested;

[0041] 300: support platform; 310: support frame; 320: first support plate;

[0042] 400: first test pipeline; 410: first valve; 420: connecting flange; 421: connecting hole; 430: sealing ring; 440: connecting pipe; 450: first connecting piece;

[0043] 500: second test pipeline; 510: second valve; 520: second connecting piece;

[0044] 600: air tightness test piece; 610: control valve; 611: first connection end; 612: second connection end; 613: third connection end; 620: pressure gauge;

[0045] 710: first sealed space; 720: second sealed space;

[0046] 800: driving part.

[0047] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0048] As described in the background technology, the detection tooling in the related art has the technical problem of poor detection efficiency. Based on this, the embodiment of the present application provides a detection tooling for a flow meter, and the airtightness test piece is directly and selectively connected to the first sealed space and / or the second sealed space, and can quickly respond to the pressure changes in the sealed space. When a leak occurs, even if the leakage is small, the airtightness test piece can be used to timely and effectively determine whether the first sealed space and / or the second sealed space has leaked, thereby achieving instant feedback on the leak and improving the detection efficiency of the detection tooling.

[0049] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0050] Please refer to the attached Figure 1 and attached Figure 2 The embodiment of the present application provides a flow meter detection tool 1000, including a support member 100, the support member 100 is used to support a flow meter 200 to be tested. The flow meter 200 to be tested includes a first end and a second end that are arranged opposite to each other. Figure 1 Taking the orientation shown as an example, the first end is the left end of the flow meter to be tested, and the second end is the right end of the flow meter to be tested.

[0051] It should be understood that the support member 100 can be directly set on the ground or on other structures. Exemplarily, the inspection tool 1000 also includes a support platform 300, and the support member 100 can be set on the support platform 300, so that the height of the support member 100 can be adjusted through the support platform 300.

[0052] The support platform 300 may include a support frame 310 and a first support plate 320, and the first support plate 320 is fixedly connected to the support frame 310. The support member 100 is connected to the first support plate 320, for example, the support member 100 may be fixedly connected to the first support plate 320 by bolts.

[0053] In one example, the support member 100 may be a second support plate, and the second support plate may be directly connected to the first support plate 320. In another example, the support member 100 may further include a second support plate and a plurality of support columns, and the second support plate is connected to the first support plate 320 via the plurality of support columns.

[0054] For another example, the support member 100 can also be connected to the first support plate 320 through a telescopic member, in which case the support member 100 can be a second support plate. In this embodiment, the support member 100 is connected to the first support plate 320 through a telescopic member, so that the height of the support member 100 can be adjusted, and then the center line of the flow meter 200 to be tested is adjusted to align with the center line of the first test pipeline 400 and the second test pipeline 500, so as to facilitate the installation of the flow meter 200 to be tested and the first test pipeline 400 and the second test pipeline 500. It should be understood that the structure of the telescopic member is a prior art, and this embodiment will not be described in detail here.

[0055] It should be noted that the support member 100 is not limited to the above-mentioned independent structure, and the support member 100 can also be a part of the support platform 300 .

[0056] Please refer to the attached Figure 2 The testing tool further includes a first test pipeline 400, which is disposed on one side of the support 100. The first test pipeline 400 includes a third end portion, which can be sealed and connected to the first end portion of the flow meter 200 to be tested to form a first sealed space 710.

[0057] The detection tool also includes a second test pipeline 500, which is arranged on the other side of the support 100. In other words, the first test pipeline 400 and the second test pipeline 500 are arranged opposite to each other. Figure 1 Taking the illustrated orientation as an example, the first test pipeline 400 is disposed on the left side of the support 100 , and the second test pipeline 500 is disposed on the right side of the support 100 .

[0058] The second test pipe 500 includes a fourth end portion, which can be sealed and connected to the second end portion to form a second sealed space 720 .

[0059] It should be understood that the connection between the first test pipeline 400 and the flow meter 200 to be tested, and the connection between the second test pipeline 500 and the flow meter 200 to be tested may also be a detachable connection, so that the flow meter 200 to be tested may be easily replaced.

[0060] The inspection tool further includes an airtightness test piece 600, which is selectively connected to the first sealed space 710 and / or the second sealed space 720. In other words, the airtightness test piece 600 can be connected to the first sealed space 710 or the second sealed space 720; or, the airtightness test piece 600 can be connected to the first sealed space 710 and the second sealed space 720 at the same time.

[0061] In this embodiment, the number of the airtightness test piece 600 can be one or two. When the number of the airtightness test piece 600 is one, the airtightness test piece 600 can be communicated with the first sealed space 710 and the second sealed space 720. When the number of the airtightness test piece 600 is two, one of the airtightness test pieces 600 can be communicated with the first sealed space 710, and the other airtightness test piece 600 can be communicated with the second sealed space 720.

[0062] It should be noted that there are multiple options for the installation position of the airtightness test piece 600 in this embodiment. In one example, the airtightness test piece 600 is set on the support platform 300 and connected to the first sealed space 710 and / or the second sealed space 720 through a connecting pipe.

[0063] In another example, the airtightness test piece 600 is disposed on at least one of the first test pipeline 400 and the second test pipeline 500. When the number of the airtightness test piece 600 is one, the airtightness test piece 600 can be disposed on the first test pipeline 400, or the airtightness test piece 600 is disposed on the second test pipeline 500.

[0064] When there are two airtightness test pieces 600, one of the airtightness test pieces 600 is arranged on the first test pipeline 400, and the other airtightness test piece 600 is arranged on the second test pipeline 500. By respectively arranging the airtightness test pieces 600 on the first test pipeline 400 and the second test pipeline 500, the airtightness test can be performed on the two interfaces of the flow meter 200 to be tested at the same time, ensuring that the flow meter 200 to be tested has no leakage points in the overall structure, thereby improving the comprehensiveness and accuracy of the test. This design helps to discover and locate potential leakage sources, thereby ensuring that the sealing performance of the flow meter 200 to be tested meets the requirements.

[0065] This embodiment can respond quickly to the pressure change in the sealed space by directly and selectively connecting the airtight test piece 600 with the first sealed space 710 and / or the second sealed space 720. When a leak occurs, even if the amount of leakage is small, the airtight test piece can be used to promptly and effectively determine whether the first sealed space 710 and / or the second sealed space 720 is leaking, thereby achieving instant feedback on the leak and improving the detection efficiency of the detection tooling.

[0066] The airtightness test piece 600 may include a pressure gauge 620 selectively connected to the first sealed space 710 and / or the second sealed space 720 .

[0067] When the flow meter 200 to be tested is installed on the detection fixture, the first sealed space 710 and / or the second sealed space 720 are squeezed, so that the pressure of the first sealed space 710 and / or the second sealed space 720 is greater than the atmospheric pressure. If the value of the pressure gauge 620 does not change, it proves that there is no leakage in the first sealed space 710 and / or the second sealed space 720. If the value of the pressure gauge 620 decreases, it proves that there is leakage in the first sealed space 710 and / or the second sealed space 720.

[0068] In this way, the sealing performance of the first sealed space 710 and / or the second sealed space 720 can be observed more intuitively through the pressure gauge 620, thereby improving the detection efficiency of the detection tooling.

[0069] The pressure gauge 620 may be directly connected to the first sealed space 710 and / or the second sealed space 720, or may be indirectly connected. Figure 3 To Attachment Figure 5 The air tightness test piece 600 includes a control valve 610 and a pressure gauge 620 , wherein the control valve 610 includes a first connection end 611 and a second connection end 612 , and the second connection end 612 is connected to the pressure gauge 620 .

[0070] The first connection end 611 is selectively connected to the first sealed space 710 and / or the second sealed space 720; exemplarily, when the number of the airtightness test pieces 600 is two, the airtightness test piece 600 connected to the first test pipeline 400, the first connection end 611 of its control valve 610 is connected to the first sealed space 710; correspondingly, the airtightness test piece 600 connected to the second test pipeline 500, the first connection end 611 of its control valve 610 is connected to the second sealed space 720.

[0071] When there is only one airtight test piece 600 and it needs to be connected to both the first sealed space 710 and the second sealed space 720, the first connecting end 611 of the control valve 610 can be connected to the first sealed space 710 and the second sealed space 720 respectively through two connecting pipelines.

[0072] It should be understood that, at this time, it can be selectively understood that in some states, the first connection end 611 is connected to the sealed space, or in other states, the first connection end 611 is not connected to the sealed space. For example, when the detection tool performs an airtightness test on the clamping of the flow meter 200 to be tested, the first connection end 611 is connected to the sealed space, so that it can be determined whether the flow meter 200 to be tested itself or the sealed space is leaking.

[0073] By setting the control valve 610, the connection between the pressure gauge 620 and the first sealed space 710 and / or the second sealed space 720 can be controlled more efficiently, providing a more effective basis for the rapid detection of the detection tooling.

[0074] In a possible implementation, the test tool further includes a first valve 410 and a second valve 510. The first valve 410 is disposed on the first test pipeline 400. For example, the first valve 410 can be disposed at the end of the first test pipeline 400 away from the flow meter 200 to be tested. The first valve 410 is used to open or close the first test pipeline 400.

[0075] The second valve 510 is disposed on the second test pipeline 500 ; for example, the second valve 510 is disposed on the end of the second test pipeline 500 away from the flow meter 200 to be tested. The second valve 510 is used to open or close the second test pipeline 500 .

[0076] The control valve 610 also includes a third connection end 613; when the first valve 410 is closed, the second valve 510 is closed, and the first connection end 611 is disconnected from the corresponding first sealed space 710 and / or second sealed space 720, the third connection end 613 is selectively connected to the corresponding first test pipeline 400 and the second test pipeline 500, and the detection tooling is used to detect the air tightness of the flow meter 200 to be tested.

[0077] It should be understood that the air-tightness test piece 600 is selectively connected to the corresponding first test pipeline 400 and second test pipeline 500. It can be understood that when it is necessary to test the air-tightness of the flow meter 200 to be tested, the air-tightness test piece 600 can be connected to the first test pipeline 400 and / or the second test pipeline 500; when it is necessary to detect the flow performance of the flow meter 200 to be tested, the air-tightness test piece 600 can be disconnected from the first test pipeline 400 and the second test pipeline 500.

[0078] With such a configuration, the same testing tool can be used to test the sealing of the first sealed space 710, the sealing of the second sealed space 720, and the sealing and flow performance of the flow meter 200 to be tested, without replacing the testing equipment. This avoids the tedious steps of multiple disassembly and assembly of the flow meter to be tested between the sealing test device and the flow standard device in the traditional testing method, thereby simplifying the testing process and improving testing efficiency.

[0079] It should be noted that when the first valve 410 is closed, the second valve 510 is closed and the first connection end 611 is disconnected from the corresponding first sealed space 710 and / or second sealed space 720, the third connection end 613 is selectively connected to the corresponding first test pipeline 400 and the second test pipeline 500, and the result of the detection tooling is that the flow meter 200 to be tested is leaking, in order to determine whether the flow meter 200 to be tested itself is leaking or the clamping of the flow meter to be tested is leaking.

[0080] The detection tool provided in this embodiment also includes: the third connection end 613 is not connected with the corresponding first test pipeline 400 and second test pipeline 500, and the first connection end 611 is selectively connected with the first sealed space 710 and / or the second sealed space 720, and the detection tool is used to detect the airtightness of the first sealed space 710 and / or the second sealed space 720. Exemplarily, if the reading of the pressure gauge 620 no longer decreases, it proves that there is no leakage in the first sealed space 710 and / or the second sealed space 720. If the reading of the pressure gauge 620 continues to decrease, it proves that there is leakage in the first sealed space 710 and / or the second sealed space 720.

[0081] With such a configuration, the same testing tool can be used to test the air tightness of the flow meter to be tested, and can also be used to test the air tightness of the sealed space at the connection position between the flow meter to be tested and the test pipeline. In this way, comprehensive consideration can be taken to determine the specific gas leakage location, thereby improving the test accuracy of the testing tool and reducing the risk of failure rate error reporting of the flow meter 200 to be tested.

[0082] In this embodiment, the detection tool can also measure the flow rate of the flow meter to be tested 200. Exemplarily, when the first valve 410 and the second valve 510 are opened, the detection tool is used to detect the flow performance of the flow meter to be tested 200.

[0083] When the first valve 410 and the second valve 510 are opened, gas flows normally in the first test pipeline 400 and the second test pipeline 500 . At this time, the detection tool 1000 detects the flow performance of the flow meter 200 to be tested.

[0084] With such an arrangement, the embodiment of the present application can integrate the first test pipeline 400, the second test pipeline 500 and the airtightness test piece 600 into one testing tool, and can successively perform an airtightness test of the sealed space, an airtightness test of the flow meter 200 to be tested, and a flow performance test of the flow meter 200 to be tested in the same testing tool without replacing the test equipment, thereby avoiding the tedious steps of multiple disassembly and assembly of the flow meter to be tested between the sealing test device and the flow standard device in the traditional testing method, thereby simplifying the testing process and improving the testing efficiency.

[0085] In order to facilitate a detailed description of the detection process of the detection tooling for the flow meter, it may be described by taking the airtightness test piece 600 installed on the first test pipeline 400 as an example.

[0086] In a specific test process, the flow meter 200 to be tested is installed on the support 100 , and the first end of the flow meter 200 to be tested is sealed connected to the first test pipeline 400 , and the second end of the flow meter 200 to be tested is sealed connected to the second test pipeline 500 .

[0087] First, the air tightness of the first sealed space 710 and / or the second sealed space 720 is tested using the air tightness test piece 600, so as to preliminarily determine whether the first sealed space 710 and / or the second sealed space 720 leaks during the clamping process.

[0088] Afterwards, close the first valve 410 and the second valve 510, and make the airtightness test piece 600 connected to the first test pipeline 400, that is, the third connection end of the control valve 610 is connected to the first test pipeline 400; afterward, open the first valve 410, and inject positive pressure gas into the first test pipeline 400 and the second test pipeline 500, and when the test pressure is reached, close the first valve 410. After stabilizing for a period of time, the indication of the pressure gauge 620 can be observed to determine whether the flow meter 200 to be tested and its clamping have any leakage. If the pressure remains unchanged, there is no leakage in the flow meter 200 to be tested and its clamping; then the first valve 410 and the second valve 510 can be opened to release the pressure, and the next step of flow performance test can be carried out.

[0089] It should be noted that, when the flow performance test is performed, the first connection end 611 may be connected to or disconnected from the corresponding first test pipeline 400 or second test pipeline 500. This embodiment does not make any specific limitation here.

[0090] During the detection process, if the pressure indication of the pressure gauge 620 continues to decrease, there is a leak in the flow meter 200 to be tested itself or the clamping (the first sealed space 710 and / or the second sealed space 720). At this time, it is necessary to determine whether the leak is in the flow meter 200 to be tested itself, or in the first sealed space 710 and / or the second sealed space 720, so as to make corresponding decisions.

[0091] In one example, under the premise that the first valve 410 and the second valve 510 are closed, the third connection end 613 can be connected to the first test pipeline 400, and the first connection end 611 can be disconnected from the first sealed space 710; if the pressure indication of the pressure gauge 620 is maintained and does not drop, it means that there is leakage in the first sealed space 710, and the flow meter 200 to be tested needs to be re-clamped and then the sealing test is performed. If the pressure indication of the pressure gauge 620 keeps dropping, it means that there is leakage in the flow meter 200 to be tested, and the flow meter 200 to be tested needs to be repaired and then the sealing test is performed again.

[0092] Please refer to the attached Figure 5 In another example, under the premise that the first valve 410 and the second valve 510 are closed, the third connection end 613 can be disconnected from the first test pipeline 400, and the first connection end 611 can be connected to the first sealed space 710. If the pressure indication of the pressure gauge is maintained and does not drop any more, the flow meter 200 to be tested has leakage, and needs to be repaired before the sealing test. If the pressure indication of the pressure gauge continues to drop, the clamping of the flow meter 200 to be tested has leakage, and the flow meter 200 to be tested needs to be re-clamped before the sealing test is performed.

[0093] The embodiment of the present application can more accurately determine whether there is a leak in the flow meter 200 to be tested or in the sealed space formed by the tester and the clamping device through the selective connection of the first connection end 611. This design enables the leak source to be quickly located during the test, avoiding test failure or misjudgment due to the inability to accurately determine the leak location. It also cooperates with the airtightness test of the sealed space during the installation process, which helps to comprehensively evaluate the airtightness of the flow meter 200 to be tested and its clamping system.

[0094] It should be noted that the airtightness test of the second sealed space 720 is consistent with the above description, and will not be further elaborated in this embodiment.

[0095] In addition, in this embodiment, the control valve 610 includes a first connection end 611, a second connection end 612, and a third connection end 613. By reasonably switching the connection mode of each connection end, the test mode (air tightness test or flow performance test) can be easily switched, which simplifies the operation process and reduces the difficulty of operation. At the same time, this design also reduces possible misoperation during the test and improves the reliability and safety of the test.

[0096] Please continue to refer to the attached Figure 1 The first test pipeline 400 and the second test pipeline 500 are respectively provided with a connecting flange 420 at one end facing the support 100, and the connecting flange 420 is sealed and connected to the flow meter 200 to be tested through a sealing ring 430; wherein the sealing ring 430, the connecting flange 420 and the first end of the flow meter 200 to be tested enclose a sealed space. That is, the connecting flange 420 connected to the first test pipeline 400 constitutes the third end, and the connecting flange 420 connected to the second test pipeline 500 constitutes the fourth end.

[0097] This embodiment uses a sealing ring 430 to achieve a sealed connection between the test pipeline and the flow meter 200 to be tested, so as to form a sealed space, so as to facilitate subsequent detection of whether the leakage occurs in the clamping or in the flow meter 200 to be tested itself, thereby reducing the risk of the flow meter 200 to be tested being misdetected and thus scrapped.

[0098] It should be understood that the sealed space can be formed by one sealing ring 430 and other components, or can be formed by two sealing rings 430 and other components.

[0099] Exemplarily, the sealing ring 430 includes two sealing rings 430, and the two sealing rings 430 are arranged on each other. The area between the two sealing rings 430, the connecting flange 420 and the flow meter 200 to be tested form a sealed space. Exemplarily, the two sealing rings 430, the connecting flange 420 connected to the first test pipeline 400 and the flow meter 200 to be tested form a first sealed space 710; the two sealing rings 430, the connecting flange 420 connected to the second test pipeline 500 and the flow meter 200 to be tested form a second sealed space 720.

[0100] In this embodiment, the sealing performance of the sealed space can be further improved by using two sealing rings 430, that is, the two sealing rings 430 form a double seal. Even if one of the sealing rings 430 is worn or aged, the other sealing ring 430 can still maintain an effective seal, thereby greatly reducing the risk of leakage.

[0101] In addition, since the two sealing rings 430 can share the sealing pressure, the wear degree of a single sealing ring 430 is reduced, thereby extending the service life of the detection tooling 1000.

[0102] In this embodiment, the sealing ring 430 can be in contact with the connection flange 420 and the surface of the flow meter 200 to be tested, respectively, or other connection methods can be used. Exemplarily, two mounting grooves are provided on the end surface of the connection flange 420 facing the flow meter 200 to be tested, and a sealing ring 430 is provided in each mounting groove, and the sealing ring 430 protrudes from the mounting groove. The communication hole is located between the two mounting grooves.

[0103] The design of the mounting groove provides a fixed position for the sealing ring 430 to prevent it from being displaced or falling off during the connection process, which helps to enhance the stability of the connection and ensure the integrity of the sealing space during the test.

[0104] In order to facilitate the communication between the third connection end 613 of the control valve 610 and the sealed space, the connection flange 420 in this embodiment is provided with a communication hole 421, and the communication hole 421 is communicated with the sealed space; the third connection end 613 is communicated with the sealed space through the communication hole 421. It should be noted that the third connection end 613 and the communication hole 421 can be directly communicated or indirectly communicated.

[0105] Exemplarily, the third connection end 613 is connected to the communication hole 421 through the connection tube 440. When the third connection end 613 is indirectly connected to the communication hole 421 through the connection tube 440, etc., this design allows a more flexible and adaptable connection scheme to be used. For example, connection tubes of different lengths, diameters or materials can be selected to adapt to different test requirements and working environments, thereby ensuring the accuracy and reliability of the test.

[0106] It should be noted that, when the air tightness test piece 600 is a pressure gauge 620, the pressure gauge 620 can be directly inserted into the connecting hole 421, which can simplify the connection between the air tightness test piece 600 and the sealed space.

[0107] Please continue to refer to the attached Figure 1 , the first test pipeline 400 and the second test pipeline 500 are fixedly connected with respect to the support platform 300, or one of the first test pipeline 400 and the second test pipeline 500 is fixedly connected with respect to the support platform 300, and the other is slidably connected with respect to the support platform 300. Exemplarily, the first test pipeline 400 is slidably arranged on the support platform 300 through the first connector 450, and the second test pipeline 500 is fixedly connected to the support platform 300 through the second connector 520. Among them, the second connector 520 can be a U-shaped structure, and the top surface of the second connector 520 has a receiving groove, the second test pipeline 500 is arranged in the receiving groove, and is fixedly connected to the second connector 520 through a clamp.

[0108] In this way, the distance between the first test pipeline 400 and the second test pipeline 500 can be adjusted, and then the flow meters 200 to be tested of different sizes can be tested, so as to improve the application range of the testing tooling.

[0109] In this embodiment, the detection tool further includes a driving member 800, which is disposed on the support platform 300, and an output end of the driving member 800 is connected to the first connecting member 450. By starting the driving member 800, the first connecting member 450 is driven to move, thereby driving the first test pipeline 400 to move toward the support member 100. The introduction of the driving member 800 enables the movement of the first test pipeline 400 to be automated through program control, reducing the reliance on manual operation and improving the efficiency and accuracy of the test process.

[0110] The number of the driving members 800 can be one or two. Exemplarily, the two driving members 800 are respectively located on both sides of the first test pipeline 400, so that the test pipeline can be supported and moved more stably. This dual-drive design can reduce the deflection or vibration that may be caused by unilateral drive, thereby improving the accuracy and stability of the test. In addition, when the two driving members 800 work at the same time, it can ensure that the first test pipeline 400 is uniformly stressed during movement, avoiding deformation or damage of the first test pipeline 400 due to uneven stress, and extending the service life of the first test pipeline 400.

[0111] In this embodiment, the first connecting member 450 is slidably mounted on the support platform 300, and can be mounted by the cooperation of a slide rail and a slider. For example, two slide rails spaced apart and parallel to each other are provided on the first support plate 320, and the first connecting member 450 is slidably mounted on the two slide rails by means of a slider, so as to improve the stability of the first connecting member 450 during the movement process.

[0112] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0113] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A detection tool for a flow meter, characterized in that: include: A support member, the support member is used to support the flow meter to be tested, the flow meter to be tested includes a first end portion and a second end portion which are arranged opposite to each other; A first test pipeline, the first test pipeline is arranged at one side of the support member, and the first test pipeline includes a third end portion, the third end portion can be sealed and connected with the first end portion to form a first sealed space; a second test pipeline, the second test pipeline being disposed on the other side of the support member, and the second test pipeline comprising a fourth end portion, the fourth end portion being capable of being sealed and connected with the second end portion to form a second sealed space; An airtightness test piece, wherein the airtightness test piece is selectively connected to the first sealed space and / or the second sealed space.

2. The detection tool for flow meter according to claim 1, characterized in that: The airtightness test piece includes a pressure gauge, and the pressure gauge is selectively connected to the first sealed space and / or the second sealed space; Alternatively, the air tightness testing piece includes a control valve and a pressure gauge, the control valve includes a first connecting end and a second connecting end, the first connecting end is selectively connected to the first sealed space / or the second sealed space, and the second connecting end is connected to the pressure gauge.

3. The detection tool for flow meter according to claim 2, characterized in that: The detection tool further includes a first valve and a second valve, wherein the first valve is disposed on the first test pipeline, and the second valve is disposed on the second test pipeline; The control valve further includes a third connection end; the third connection end is selectively connected to the corresponding first test pipeline and the second test pipeline.

4. The detection tool for flow meter according to claim 3, characterized in that: When the first valve is closed, the second valve is closed, and the connection between the first connection end and the corresponding first sealed space and / or the second sealed space is disconnected, the third connection end is selectively connected to the corresponding first test pipeline and the second test pipeline, and the detection tool can be used to detect the air tightness of the flow meter to be tested.

5. The detection tool for flow meter according to claim 3, characterized in that: When the third connection end is disconnected from the corresponding first test pipeline and the second test pipeline, and the first connection end is selectively connected to the first sealed space and / or the second sealed space, the detection tool can be used to detect the air tightness of the first sealed space and / or the second sealed space; Alternatively, when the first valve and the second valve are opened, the detection tool can be used to detect the flow performance of the flow meter to be tested.

6. The detection tool for flow meter according to any one of claims 1 to 5, characterized in that: The first test pipeline and the second test pipeline are respectively provided with connecting flanges at one end facing the support member, and the connecting flanges are sealed and connected to the flow meter to be tested through a sealing ring; The sealing ring, the connecting flange and the flow meter to be tested form the sealed space; The connecting flange connected to the first test pipeline constitutes the third end, and the connecting flange connected to the second test pipeline constitutes the fourth end.

7. The detection tool for flow meter according to claim 6, characterized in that: The sealing rings include two, and the two sealing rings are sleeved on each other; The area between the two sealing rings, the connecting flange and the flow meter to be tested form the sealed space; Alternatively, the connecting flange is provided with a communicating hole, and the communicating hole is communicated with the sealing space; The third connection end is communicated with the sealed space through the communication hole, or the third connection end is communicated with the communication hole through a connection pipe.

8. The detection tool for flow meter according to claim 7, characterized in that: Two mounting grooves are arranged on the end surface of the connecting flange facing the flow meter to be tested, a sealing ring is arranged in each mounting groove, and the sealing ring protrudes from the mounting groove; The communicating hole is located between the two mounting grooves.

9. The detection tool for flow meter according to any one of claims 1 to 5, characterized in that: The airtightness test piece is disposed in at least one of the first test pipeline and the second test pipeline.

10. The detection tool for flow meter according to any one of claims 1 to 5, characterized in that: The detection tooling also includes a support platform, the first test pipeline is slidably arranged on the support platform through a first connecting member, and the second test pipeline is fixedly connected to the support platform through a second connecting member; The detection tool also includes a driving member, which is arranged on the supporting platform, and an output end of the driving member is connected to the first connecting member.

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