An adjustable flow meter testing device

Abstract

The utility model discloses an adjustable flowmeter testing arrangement relates to gas flowmeter test field, including test support and the flowmeter of measuring, test support top is equipped with the test mechanism for comparing and detecting to the flowmeter of measuring, the test mechanism includes the mounting seat fixed mounting at the top of test support, and mounting seat outer wall is equipped with high accuracy standard flowmeter, test support bottom is equipped with variable frequency air compressor, and variable frequency air compressor outer wall is equipped with pressure control valve, the top fixed mounting of test support has the joint, mounting seat outer wall is equipped with the fixed mechanism for the spacing of different specifications flowmeter of measuring. The adjustable flowmeter testing arrangement, through variable frequency air compressor of test support bottom and pressure control valve cooperation, can adjust the air current output parameter flexibly, combines high accuracy standard flowmeter real -time acquisition standard flow data, effectively promotes the accuracy and comprehensiveness of test data, satisfies the new type flowmeter diversification's access test demand.

Description

Technical Field

[0001] This utility model relates to the field of gas flow meter testing technology, specifically an adjustable flow meter testing device. Background Technology

[0002] In the energy, chemical and other fields, flow meters are key equipment for measuring fluid flow. Their measurement accuracy directly affects production and operating costs and trade fairness. With the accelerated iteration of new flow meter technologies, enterprises have an increasingly urgent need for access testing of flow meters.

[0003] In the prior art, Chinese Patent No. CN221945325U discloses a gas flow meter fault detection device, including a base. A groove is formed on the upper surface of the base, and a double-ended screw is vertically arranged within the groove. Two nuts are symmetrically arranged on the double-ended screw, and each nut has an assembly block. Support arms are fixedly connected to each assembly block. Through the double-ended screw, nuts, and assembly blocks, when the flow meter malfunctions, turning a knob will eventually move the clamps on both sides, thereby clamping and fixing the removed flow meter. This eliminates the need for manual operation, facilitating subsequent testing procedures. The flow meter's port is connected to a connecting pipe, and a quantitative gas sample is injected into the test chamber by the control system, changing the pressure and temperature of the sample. By comparing the data recorded by the flow meter with the sample, the location of the flow meter fault can be determined, improving detection efficiency.

[0004] Existing flow meters are typically tested in a single scenario, relying on installation at actual gas consumption points in the plant. They can only follow the natural gas consumption patterns of the plant and cannot simulate complex operating conditions such as switching between medium and low pressures or sudden changes in flow rate. As a result, the test results cannot fully reflect the performance of the flow meter in real complex environments. Furthermore, it is impossible to conduct comparative tests on multiple flow meters of different specifications at the same time, which affects the testing efficiency and accuracy. Therefore, we propose an adjustable flow meter testing device. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable flow meter testing device to solve the problems mentioned in the background art, which are that existing flow meters are usually tested in a single scenario, rely on the actual gas consumption points of the plant for installation, can only follow the natural gas consumption patterns of the plant, and cannot simulate complex operating conditions such as medium and low pressure switching and sudden flow changes. As a result, the test results cannot fully reflect the performance of the flow meter in the actual complex environment; and it is impossible to conduct comparative tests on multiple specifications of flow meters at the same time, which affects the testing efficiency and accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable flow meter testing device, comprising a test bracket and a flow meter to be tested. The top of the test bracket is provided with a test mechanism for comparative testing of the flow meter to be tested. The test mechanism includes a mounting base fixedly installed on the top of the test bracket, and a high-precision standard flow meter is provided on the outer wall of the mounting base. A variable frequency air compressor is provided at the bottom of the test bracket, and a pressure control valve is provided on the outer wall of the variable frequency air compressor. A connector is fixedly installed on the top of the test bracket, and a fixing mechanism for limiting the flow meters to be tested of different specifications is provided on the outer wall of the mounting base.

[0007] Furthermore, the output end of the variable frequency air compressor is provided with a delivery hose, and the end of the delivery hose away from the variable frequency air compressor is connected to the end of the connector.

[0008] Furthermore, the high-precision standard flow meter is located at the end of the mounting base near the connector, and the inlet end of the high-precision standard flow meter is provided with an inlet hose, and the end of the inlet hose away from the high-precision standard flow meter is connected to the end of the connector.

[0009] Furthermore, the flow meters to be tested are arranged at equal intervals on the outer wall of the mounting base, and adjacent groups of flow meters to be tested are connected by connecting hoses, and one group of flow meters to be tested is connected to a high-precision standard flow meter by connecting hoses.

[0010] Furthermore, the fixing mechanism includes an adjustment groove and a limiting slide groove formed on the outer wall of the mounting base. A fixing clamp is slidably installed on the outer wall of the mounting base, and the outer wall of the fixing clamp is provided with an adjustment block and a slider. An adjustment rod is rotatably installed inside the mounting base, and the outer wall of the adjustment rod is provided with a bidirectional thread.

[0011] Furthermore, the fixing plates are symmetrically arranged on both sides of the flow meter to be tested, and the outer wall of the fixing plates is provided with a buffer pad, and the outer wall of the buffer pad is provided with anti-slip grooves distributed at equal intervals. The buffer pad is made of rubber, and the outer wall of the buffer pad is in contact with the side wall of the flow meter to be tested.

[0012] Furthermore, the length of the adjustment groove is greater than the width of the flow meter to be measured, and the adjustment grooves are opened at equal intervals. The cross-section of the limiting slide groove is trapezoidal, and the limiting slide grooves are symmetrically arranged on both sides of the adjustment groove. A limiting slide rod is fixedly installed on the inner wall of the limiting slide groove. The adjustment block is slidably connected to the adjustment groove, and the slider is slidably connected to both the limiting slide groove and the limiting slide rod.

[0013] Furthermore, the length of the adjusting rod is greater than the length of the mounting base, and the adjusting rod is located at the center of the adjusting groove. A handwheel is provided at the end of the adjusting rod. The bidirectional threads are evenly distributed on the outer wall of the adjusting rod, and the length of the bidirectional threads is the same as the opening length of the adjusting groove. The adjusting block and the adjusting rod are connected by bidirectional threads.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This adjustable flow meter testing device, through the cooperation of a variable frequency air compressor and a pressure control valve at the bottom of the test bracket, can flexibly adjust the airflow output parameters. Combined with the real-time acquisition of standard flow data by a high-precision standard flow meter, it breaks through the limitations of traditional testing that relies on the natural gas consumption patterns of the site. It can simulate complex working conditions such as medium and low pressure switching and sudden flow changes, making the test results more consistent with the actual use scenarios of the flow meter, effectively improving the accuracy and comprehensiveness of the test data, and meeting the diverse access testing needs of new flow meters.

[0016] 2. By setting a fixing mechanism on the outer wall of the mounting base, rotating the adjusting rod drives the bidirectional thread to rotate, causing the adjusting block to drive the fixing clamp to slide along the adjusting groove. With the guiding effect of the limiting slide groove and the slider, the limiting and fixing of flow meters of different specifications can be quickly achieved. At the same time, the flow meters to be tested are arranged at equal intervals and connected in series through connecting hoses, which can simultaneously perform comparative tests on multiple groups of flow meters of different specifications without frequent disassembly and replacement, greatly shortening the test cycle and improving test efficiency.

[0017] 3. The rubber buffer pad on the outer wall of the fixed clamp not only enhances the clamping stability of the flow meter under test through the anti-slip groove, preventing the flow meter from shifting due to airflow impact during the test, but also plays a buffering protection role during clamping, preventing scratches or squeezing damage to the outer shell of the flow meter under test; in addition, the overall device has a compact structure, and airflow transmission is achieved through the cooperation of the delivery hose, inlet hose and connector, which makes installation and disassembly convenient, reduces the complexity of the test operation, and facilitates the staff to quickly carry out the test work. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the test bracket of this utility model;

[0021] Figure 4 This is a schematic diagram of the fixing mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the fixed clamping plate, buffer pad, adjusting rod and limiting slide rod of this utility model;

[0023] Figure 6 This is a schematic cross-sectional view of the mounting base of this utility model.

[0024] In the diagram: 1. Test bracket; 101. Connector; 102. Inlet hose; 2. High-precision standard flow meter; 3. Variable frequency air compressor; 301. Pressure control valve; 302. Delivery hose; 4. Flow meter to be tested; 5. Connecting hose; 6. Mounting base; 601. Adjustment groove; 602. Limiting groove; 7. Fixing clamp; 701. Slider; 702. Adjusting block; 703. Buffer pad; 704. Anti-slip groove; 8. Adjusting rod; 801. Bidirectional thread; 802. Handwheel; 9. Limiting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figures 1-3 The present invention provides the following technical solution: an adjustable flow meter testing device, including a test bracket 1 and a flow meter 4 to be tested. The top of the test bracket 1 is provided with a test mechanism for comparative testing of the flow meter 4 to be tested. The test mechanism includes a mounting base 6 fixedly installed on the top of the test bracket 1, and a high-precision standard flow meter 2 is provided on the outer wall of the mounting base 6. A variable frequency air compressor 3 is provided at the bottom of the test bracket 1, and a pressure control valve 301 is provided on the outer wall of the variable frequency air compressor 3. A connector 101 is fixedly installed on the top of the test bracket 1.

[0027] like Figure 1 and Figure 2 As shown, the output end of the variable frequency air compressor 3 is provided with a conveying hose 302, and the end of the conveying hose 302 away from the variable frequency air compressor 3 is connected to the end of the connector 101.

[0028] like Figures 1-3 As shown, the high-precision standard flow meter 2 is located at the end of the mounting base 6 near the connector 101, and the inlet end of the high-precision standard flow meter 2 is provided with an inlet hose 102. The end of the inlet hose 102 away from the high-precision standard flow meter 2 is connected to the end of the connector 101. The flow meters 4 to be tested are arranged at equal intervals on the outer wall of the mounting base 6, and adjacent groups of flow meters 4 to be tested are connected by a connecting hose 5. One group of flow meters 4 to be tested is connected to the high-precision standard flow meter 2 through the connecting hose 5.

[0029] Before the test is started, the flow meter under test 4 is installed in the designated position of the mounting base 6 through the fixing mechanism, and the flow meter under test 4 and the high-precision standard flow meter 2 are connected in series through the connecting hose 5. At the same time, it is ensured that the delivery hose 302 at the output end of the variable frequency air compressor 3 is connected to the connector 101 at the top of the test bracket 1, and the inlet hose 102 at the inlet end of the high-precision standard flow meter 2 is connected to the same connector 101, so as to build a complete airflow test circuit.

[0030] During the test, the variable frequency air compressor 3 is started. According to the test requirements, the pressure parameters of the output airflow are adjusted through the pressure control valve 301. After the airflow is split through the delivery hose 302 and the connector 101, part of it enters the high-precision standard flow meter 2 through the inlet hose 102. The high-precision standard flow meter 2 collects and records the standard flow data in real time as a comparison benchmark. The other part of the airflow enters multiple sets of flow meters under test 4 connected in series. Each set of flow meters under test 4 records its own detected flow data. Since the airflow is split from the same connector 101 and enters the circuits of the standard flow meter and the flow meters under test 4 respectively, and the pipeline connection structure ensures the consistency of airflow conditions, the staff can judge the measurement accuracy of the flow meters under test 4 by comparing the real-time data of the high-precision standard flow meter 2 and each set of flow meters under test 4. At the same time, by adjusting the output frequency of the variable frequency air compressor 3 and the pressure parameters of the pressure control valve 301, complex working conditions such as switching between medium and low pressure and sudden changes in flow can be simulated to fully verify the performance of the flow meters under test 4 in different actual use scenarios.

[0031] Example 2: Please refer to Figures 1-6Based on Embodiment 1, a fixing mechanism is also disclosed, the specific structure of which is as follows: The outer wall of the mounting base 6 is provided with a fixing mechanism for limiting the flow meters 4 of different specifications to be tested. The fixing mechanism includes an adjustment groove 601 and a limiting slide groove 602 opened on the outer wall of the mounting base 6. A fixing clamp 7 is slidably installed on the outer wall of the mounting base 6, and the outer wall of the fixing clamp 7 is provided with an adjustment block 702 and a slider 701. An adjustment rod 8 is rotatably installed inside the mounting base 6, and the outer wall of the adjustment rod 8 is provided with a bidirectional thread 801. The fixing clamp 7 is symmetrically arranged on both sides of the flow meters 4 to be tested, and the outer wall of the fixing clamp 7 is provided with a buffer pad 703. The outer wall of the buffer pad 703 is provided with anti-slip grooves 704 distributed at equal intervals. The buffer pad 703 is made of rubber, and the outer wall of the buffer pad 703 is in contact with the side wall of the flow meter 4 to be tested. The length of the regulating groove 601 is greater than the width of the flow meter 4 to be measured, and the regulating groove 601 is opened at equal intervals. The limiting slide groove 602 has a trapezoidal cross section and is symmetrically arranged on both sides of the regulating groove 601. The limiting slide rod 9 is fixedly installed on the inner wall of the limiting slide groove 602. The regulating block 702 is slidably connected to the regulating groove 601. The slider 701 is slidably connected to both the limiting slide groove 602 and the limiting slide rod 9. The length of the regulating rod 8 is greater than the length of the mounting base 6, and the regulating rod 8 is located at the center of the regulating groove 601. The end of the regulating rod 8 is provided with a handwheel 802. The bidirectional thread 801 is evenly distributed on the outer wall of the regulating rod 8, and the length of the bidirectional thread 801 is the same as the opening length of the regulating groove 601. The regulating block 702 and the regulating rod 8 are connected by the bidirectional thread 801.

[0032] When the flow meter to be tested 4 needs to be installed, turn the handwheel 802 at the end of the adjusting rod 8 to drive the adjusting rod 8 to rotate inside the mounting base 6. Since the adjusting block 702 is connected to the adjusting rod 8 through the bidirectional thread 801, and the adjusting block 702 is fixedly connected to the fixed clamping plate 7, and the adjusting block 702 slides along the adjusting groove 601 on the outer wall of the mounting base 6, when the adjusting rod 8 rotates, the bidirectional thread 801 will drive the two sets of adjusting blocks 702 in the same adjusting groove 601 to move synchronously in opposite directions, thereby driving the two sets of fixed clamping plates 7 to move closer or further away from each other.

[0033] During the movement of the fixed clamp 7, the limiting groove 602 on the outer wall of the mounting base 6 and the slider 701 on the fixed clamp 7 form a guiding structure. The limiting groove 602 has a trapezoidal cross-section and a limiting rod 9 inside. The slider 701 slides in conjunction with the limiting groove 602 and the limiting rod 9, which can effectively limit the movement trajectory of the fixed clamp 7 and prevent it from shifting or shaking during adjustment, thus ensuring clamping accuracy. When the fixed clamp 7 contacts the side wall of the flowmeter 4 to be tested, the rubber buffer pad 703 on the outer wall of the clamp will tightly adhere to the surface of the flowmeter. The anti-slip groove 704 on the buffer pad 703 can enhance friction and prevent the flowmeter from shifting during testing. At the same time, the elastic properties of the rubber material can prevent excessive clamping force from scratching or squeezing the outer shell of the flowmeter 4 to be tested. For different batches and specifications of the flowmeter 4 to be tested, the spacing of the fixed clamp 7 can be adjusted by adjusting the adjusting rod 8 to adapt to flowmeters of different widths and diameters without changing the clamps, thus improving the ease of operation.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable flow meter testing device, comprising a test bracket (1) and a flow meter to be tested (4), characterized in that: The test bracket (1) is provided with a test mechanism at the top for comparative testing of the flow meter (4) to be tested. The test mechanism includes a mounting base (6) fixedly installed at the top of the test bracket (1), and a high-precision standard flow meter (2) is provided on the outer wall of the mounting base (6). A variable frequency air compressor (3) is provided at the bottom of the test bracket (1), and a pressure control valve (301) is provided on the outer wall of the variable frequency air compressor (3). A connector (101) is fixedly installed at the top of the test bracket (1). A fixing mechanism for limiting the flow meters (4) of different specifications to be tested is provided on the outer wall of the mounting base (6).

2. The adjustable flow meter testing device according to claim 1, characterized in that: The output end of the variable frequency air compressor (3) is provided with a conveying hose (302), and the end of the conveying hose (302) away from the variable frequency air compressor (3) is connected to the end of the connector (101).

3. The adjustable flow meter testing device according to claim 1, characterized in that: The high-precision standard flow meter (2) is located on the mounting base (6) near the connector (101), and the inlet end of the high-precision standard flow meter (2) is provided with an inlet hose (102), and the end of the inlet hose (102) away from the high-precision standard flow meter (2) is connected to the end of the connector (101).

4. The adjustable flow meter testing device according to claim 1, characterized in that: The flow meters to be tested (4) are arranged at equal intervals on the outer wall of the mounting base (6), and two adjacent sets of flow meters to be tested (4) are connected by connecting hoses (5), and one set of flow meters to be tested (4) is connected to a high-precision standard flow meter (2) through connecting hoses (5).

5. The adjustable flow meter testing device according to claim 1, characterized in that: The fixing mechanism includes an adjustment groove (601) and a limiting slide groove (602) on the outer wall of the mounting base (6). A fixing clamp (7) is slidably installed on the outer wall of the mounting base (6), and an adjustment block (702) and a slider (701) are provided on the outer wall of the fixing clamp (7). An adjustment rod (8) is rotatably installed inside the mounting base (6), and a bidirectional thread (801) is provided on the outer wall of the adjustment rod (8).

6. The adjustable flow meter testing device according to claim 5, characterized in that: The fixing clamp (7) is symmetrically arranged on both sides of the flow meter (4) to be tested, and the outer wall of the fixing clamp (7) is provided with a buffer pad (703), and the outer wall of the buffer pad (703) is provided with anti-slip grooves (704) distributed at equal intervals. The buffer pad (703) is made of rubber, and the outer wall of the buffer pad (703) is in contact with the side wall of the flow meter (4) to be tested.

7. The adjustable flow meter testing device according to claim 5, characterized in that: The length of the adjustment groove (601) is greater than the width of the flow meter (4) to be measured, and the adjustment groove (601) is opened at equal intervals. The limit slide groove (602) has a trapezoidal cross section and is symmetrically arranged on both sides of the adjustment groove (601). The limit slide groove (602) is fixedly installed on the inner wall of the limit slide groove (602). The adjustment block (702) is slidably connected to the adjustment groove (601), and the slider (701) is slidably connected to both the limit slide groove (602) and the limit slide rod (9).

8. The adjustable flow meter testing device according to claim 5, characterized in that: The length of the adjusting rod (8) is greater than the length of the mounting base (6), and the adjusting rod (8) is located at the center of the adjusting groove (601). The end of the adjusting rod (8) is provided with a handwheel (802). The bidirectional thread (801) is evenly distributed on the outer wall of the adjusting rod (8), and the length of the bidirectional thread (801) is the same as the opening length of the adjusting groove (601). The adjusting block (702) is connected to the adjusting rod (8) through the bidirectional thread (801).

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