Pressure gauge expansion calibration device

Abstract

The utility model relates to the technical field of pressure gauge calibration, in particular to a pressure gauge expansion calibration device, which comprises a test board, a blast pump, a mounting column and a test column, the mounting column and the test column are respectively provided with a joint and an airflow channel, the airflow channel of the mounting column is communicated with the airflow channel of the test column through a connecting pipe, and the connecting pipe is connected with the blast pump. The inflating pump is communicated with the airflow channel of the mounting column or the airflow channel of the testing column through a connecting pipe; the standard meter is connected with the joint of the mounting column; the expansion joint is provided with an inlet and more than two outlets, the inlet is connected with the joint of the test column, and the outlets are provided with detachable plugs; and the standby inspection meter is detachably connected with the outlet. The pressure gauge expansion calibration device provided by the utility model can compare the readings of a plurality of groups of to-be-detected gauges and standard gauges at the same time, so that the synchronous calibration of any number of pressure gauges is realized, and the efficiency of calibration operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauge calibration, in particular to an extended calibration device for a pressure gauge. Background Art

[0002] The pressure gauge is used to detect the internal pressure of the device. The precision of the pressure gauge directly affects the normal use and operation of the device. If the measured value of the pressure gauge is inaccurate, there will be safety hazards, so the pressure gauge should be calibrated regularly. The structure of the pressure gauge calibration device can refer to the Chinese utility model patent with application number CN202223252478.2 and the name of a pressure gauge calibration device. The traditional pressure gauge calibration device can only calibrate one pressure gauge at a time, and the calibration efficiency is slow, which is not conducive to improving the efficiency of the calibration operation. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a pressure gauge expansion calibration device, which can calibrate multiple pressure gauges simultaneously.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a pressure gauge expansion calibration device, comprising:

[0005] The test bench is provided with an air pump, a mounting column and a test column, the mounting column and the test column are both provided with a joint and an air flow channel, the air flow channel of the mounting column is connected with the air flow channel of the test column through a connecting pipe, and the air pump is connected with the air flow channel of the mounting column or the air flow channel of the test column through the connecting pipe;

[0006] Standard table, connected to the connector of the mounting column;

[0007] An expansion joint, provided with an inlet and two or more outlets, the inlet being connected to the joint of the test column, and the outlet being provided with a detachable plug;

[0008] Inspection table, detachably connected to the outlet.

[0009] Furthermore, the outlet is provided with a threaded interface, and the threaded interface cooperates with the plug or the inspection table thread.

[0010] Furthermore, a sealing cover is provided on the top of the test bench, an observation window is provided on the sealing cover, and the sealing cover houses the mounting column, the test column, the standard meter, the expansion joint and the inspection meter cover.

[0011] Furthermore, a temperature regulating component is provided in the sealing cover.

[0012] Furthermore, shock-absorbing legs are provided at the bottom of the test bench.

[0013] The beneficial effects of the utility model are: providing a pressure gauge expansion calibration device, in which an air pump, a mounting column and a test column are arranged on a test bench, and the air pump applies pressure to the mounting column and the test column through a connecting pipe. At this time, a standard gauge installed on the mounting column displays a standard reading, and an extended joint is used to realize parallel installation of any number of spare gauges. The outlet of the joint without the spare gauge installed is sealed by a plug to ensure the sealing of the extended joint, and the readings of multiple groups of spare gauges and standard gauges can be compared at the same time, thereby realizing the synchronous calibration of any number of pressure gauges and improving the efficiency of the calibration operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure shows a schematic diagram of the structure of the pressure gauge expansion calibration device according to an embodiment of the utility model;

[0015] Figure 2 Another structural schematic diagram of the pressure gauge expansion calibration device according to an embodiment of the utility model is shown;

[0016] Description of labels:

[0017] 1. Test bench; 11. Air pump; 12. Mounting column; 13. Test column; 131. Joint; 132. Air flow channel; 14. Connecting pipe; 15. Sealing cover; 151. Observation window; 16. Shock-absorbing support leg; 2. Standard table; 3. Extension joint; 31. Inlet; 32. Outlet; 33. Plug; 4. Inspection table. DETAILED DESCRIPTION

[0018] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0019] The utility model provides a pressure gauge expansion calibration device, which is applied in the calibration operation of a pressure gauge.

[0020] Please refer to Figure 1 to Figure 2 As shown, a pressure gauge expansion calibration device of the utility model comprises:

[0021] The test bench 1 is provided with an air pump 11, a mounting column 12 and a test column 13. The mounting column 12 and the test column 13 are both provided with a joint 131 and an air flow channel 132. The air flow channel 132 of the mounting column 12 is connected with the air flow channel 132 of the test column 13 via a connecting pipe 14. The air pump 11 is connected with the air flow channel 132 of the mounting column 12 or the air flow channel 132 of the test column 13 via the connecting pipe 14.

[0022] Standard table 2, connected to the connector of mounting column 12;

[0023] The expansion joint 3 is provided with an inlet 31 and two or more outlets 32, wherein the inlet 31 is connected to the joint of the test column 13, and the outlet 32 ​​is provided with a detachable plug 33;

[0024] The inspection table 4 is detachably connected to the outlet 32.

[0025] From the above description, it can be seen that the beneficial effects of the utility model are: providing a pressure gauge expansion calibration device, an air pump 11, a mounting column 12 and a test column 13 are arranged on the test bench 1, and the air pump 11 applies pressure to the mounting column 12 and the test column 13 through the connecting pipe 14. At this time, the standard gauge 2 installed on the mounting column 12 displays the standard reading, and the parallel installation of any number of inspection gauges 4 is realized through the expansion joint 3. The joint outlet 32 ​​where the inspection gauge 4 is not installed is sealed by the plug 33 to ensure the sealing of the expansion joint 3. The readings of multiple groups of inspection gauges 4 and the standard gauge 2 can be compared at the same time, thereby realizing the synchronous calibration of any number of pressure gauges and improving the efficiency of the calibration operation.

[0026] In an optional embodiment, the outlet 32 ​​is provided with a threaded interface, and the threaded interface is threadably matched with the plug 33 or the inspection table 4 .

[0027] As can be seen from the above description, the plug 33 or the inspection table 4 is connected to the outlet 32 ​​of the expansion joint 3 by means of threaded connection, which has the advantages of easy disassembly and assembly and good sealing.

[0028] In an optional embodiment, a sealing cover 15 is provided on the top of the test bench 1, and an observation window 151 is provided on the sealing cover 15. The sealing cover 15 covers the installation column 12, the test column 13, the standard table 2, the expansion joint 3 and the inspection table 4.

[0029] It can be known from the above description that the sealing cover 15 is used to achieve relative sealing of the calibration environment of the test meter 4 .

[0030] In an optional embodiment, a temperature regulating component is provided in the sealing cover 15 .

[0031] From the above description, it can be seen that the temperature adjustment component adopts a product commonly available on the market that can adjust the temperature, which is used to adjust the temperature of the calibration environment of the test meter 4 to test the accuracy of the test meter 4 under different environments.

[0032] In an optional embodiment, shock-absorbing legs 16 are provided at the bottom of the test bench 1 .

[0033] It can be seen from the above description that the shock-absorbing legs 16 play a role in reducing the vibration of the test bench 1, thereby ensuring the calibration accuracy.

[0034] The working principle of the utility model is: before use, the standard meter 2 is fixedly installed on the installation column 12, when in use, the plug 33 on the outlet 32 ​​of the expansion joint 3 is removed, the inspection meter 4 is installed on the corresponding outlet 32, and the air pump 11 is started to pressurize the connected installation column 12 and the test column 13, and the reading of the standard meter 2 is compared with the reading of the inspection meter 4 to calibrate and record, and the ambient temperature is controlled by the temperature adjustment component to calibrate the reading accuracy of the inspection meter 4 at different ambient temperatures.

[0035] Please refer to Figure 1 to Figure 2 As shown, the first embodiment of the utility model is: a pressure gauge expansion calibration device, comprising:

[0036] The test bench 1 is provided with an air pump 11, a mounting column 12 and a test column 13. The mounting column 12 and the test column 13 are both provided with a joint 131 and an air flow channel 132. The air flow channel 132 of the mounting column 12 is connected with the air flow channel 132 of the test column 13 via a connecting pipe 14. The air pump 11 is connected with the air flow channel 132 of the mounting column 12 or the air flow channel 132 of the test column 13 via the connecting pipe 14.

[0037] Standard table 2, connected to the connector of mounting column 12;

[0038] The expansion joint 3 is provided with an inlet 31 and two or more outlets 32, wherein the inlet 31 is connected to the joint of the test column 13, and the outlet 32 ​​is provided with a detachable plug 33;

[0039] The inspection table 4 is detachably connected to the outlet 32.

[0040] The outlet 32 ​​is provided with a threaded interface, and the threaded interface is threadedly matched with the plug 33 or the inspection table 4. The top of the test bench 1 is provided with a sealing cover 15, and the sealing cover 15 is provided with an observation window 151. The sealing cover 15 covers the installation column 12, the test column 13, the standard table 2, the expansion joint 3 and the inspection table 4. The sealing cover 15 is provided with a temperature adjustment component. The bottom of the test bench 1 is provided with a shock-absorbing support leg 16.

[0041] In summary, the utility model provides a pressure gauge expansion calibration device, in which an air pump, a mounting column and a test column are arranged on a test bench. The air pump applies pressure to the mounting column and the test column through a connecting pipe. At this time, the standard gauge installed on the mounting column displays a standard reading. The parallel installation of any number of spare gauges can be realized through an expansion joint. The outlet of the joint where no spare gauge is installed is sealed by a plug to ensure the sealing of the expansion joint. The readings of multiple groups of spare gauges and standard gauges can be compared at the same time, thereby realizing the synchronous calibration of any number of pressure gauges and improving the efficiency of the calibration operation.

[0042] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A pressure gauge expansion calibration device, characterized in that: include: The test bench is provided with an air pump, a mounting column and a test column, the mounting column and the test column are both provided with a joint and an air flow channel, the air flow channel of the mounting column is connected with the air flow channel of the test column through a connecting pipe, and the air pump is connected with the air flow channel of the mounting column or the air flow channel of the test column through the connecting pipe; Standard table, connected to the connector of the mounting column; An expansion joint, provided with an inlet and two or more outlets, the inlet being connected to the joint of the test column, and the outlet being provided with a detachable plug; Inspection table, detachably connected to the outlet.

2. The pressure gauge expansion calibration device according to claim 1, characterized in that: The outlet is provided with a threaded interface, and the threaded interface cooperates with the plug or the inspection table thread.

3. The pressure gauge expansion calibration device according to claim 1, characterized in that: A sealing cover is arranged on the top of the test bench, an observation window is arranged on the sealing cover, and the sealing cover houses the installation column, the test column, the standard meter, the expansion joint and the meter cover for inspection.

4. The pressure gauge expansion calibration device according to claim 3, characterized in that: A temperature regulating component is arranged in the sealing cover.

5. The pressure gauge expansion calibration device according to claim 1, characterized in that: The bottom of the test bench is provided with shock-absorbing legs.

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