Automatic mounting table for pressure gauge calibration

Abstract

The utility model discloses an automatic mounting table for pressure gauge calibration. The automatic mounting table comprises a calibration box, a calibration reaction frame and a pressure gauge calibration mechanism, the pressure gauge calibration mechanism comprises a hydraulic source, a pressure gauge adapter and a connecting nut; a pressure sensor is arranged between the hydraulic source and the pressure gauge adapter; an air inlet channel is formed in the pressure gauge adapter; and a sealing ring is arranged at the top of the pressure gauge adapter. According to the utility model, the hydraulic source is arranged to pressurize and push the pressure gauge adapter to move upwards, and the detected pressure gauge is limited by the calibration reaction frame, so that the inlet end of the detected pressure gauge is tightly connected with the pressure gauge adapter, effective connection between the detected pressure gauge and the pressure gauge calibration mechanism is realized, and the process is simple; and by arranging the sealing ring, the procedure of winding an adhesive tape to ensure the air tightness in the traditional calibration can be avoided, the calibration procedure is reduced, and the calibration time is saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pressure gauge calibration technical field, especially a kind of automatic installation platform for pressure gauge calibration. BACKGROUND

[0002] When calibrating pressure gauge, it is usually connected by manual operation of pressure gauge and adapter for connecting with pressure calibration device to realize the calibration of pressure gauge, which is simple in structure and low in cost, but low in efficiency, laborious in operation, only suitable for small batch pressure gauge calibration, and not suitable for large amount of calibration work. At present, there are various types of pressure gauges, and manual calibration needs to be equipped with various types of adapters to realize the connection with pressure calibration device, which is large in task amount and complicated in process. In addition, pressure gauge and pressure calibration device are connected by thread, and the air tightness is not good, so it is necessary to wrap adhesive tape to ensure air tightness, and sometimes it needs to be repeated several times, which is complicated and time-consuming. In addition, the pressure gauge and the pressure calibration device are connected by thread, and the activity spanner is usually needed, which is laborious to tighten by manpower. INVENTION CONTENTS

[0003] The utility model provides a kind of automatic installation platform for pressure gauge calibration, and the technical problems to be solved are as follows: by setting hydraulic source pressurization, the pressure gauge adapter is moved upward, the inlet end of the pressure gauge under the restriction of calibration counterforce frame is connected with the pressure gauge adapter tightly, the effective connection between the pressure gauge and the pressure gauge calibration mechanism is realized, the process is simple, and it is convenient to use. By setting sealing ring, the process of wrapping adhesive tape to ensure air tightness in traditional calibration can be avoided, the calibration process is reduced, and the calibration time is saved.

[0004] To solve the above technical problems, the utility model adopts the technical scheme: a kind of automatic installation platform for pressure gauge calibration, characterized by: including calibration box, calibration counterforce frame being set in the calibration box, and pressure gauge calibration mechanism being set between the calibration box and calibration counterforce frame and cooperating with the calibration counterforce frame;

[0005] The pressure gauge calibration mechanism includes hydraulic source being set in the calibration box and being arranged on the bottom surface of the calibration box, pressure gauge adapter being set on the top of the hydraulic source, and connecting nut being set on the bottom of the horizontal section of the calibration counterforce frame. Pressure sensor is arranged between the hydraulic source and the pressure gauge adapter. The inside of the pressure gauge adapter is provided with air inlet channel. The top of the pressure gauge adapter is provided with sealing ring, and the sealing ring is arranged between the pressure gauge adapter and the pressure gauge under test.

[0006] The side of the calibration box is provided with an opening and closing door, a control box is arranged in the calibration box, a circuit board is arranged in the control box, a controller is integrated on the circuit board, and the signal output end of the pressure sensor is connected with the signal input end of the controller; and the hydraulic source is controlled by the controller.

[0007] The automatic mounting table for pressure gauge calibration has the characteristics that a pressure gauge through hole is formed in the top of the calibration box, and a pressure pipe through hole is formed in the side of the calibration box.

[0008] The automatic mounting table for pressure gauge calibration has the characteristics that the calibration counterforce frame is in a door-shaped structure, the horizontal section of the calibration counterforce frame is in abutment with the top surface of the calibration box, and the bottom of the vertical section of the calibration counterforce frame is fixed on the bottom surface of the calibration box.

[0009] The automatic mounting table for pressure gauge calibration has the characteristics that a pressure gauge mounting hole is formed in the horizontal section of the calibration counterforce frame, the pressure gauge mounting hole and the pressure gauge through hole are in communication, and the central axis of the pressure gauge mounting hole and the central axis of the pressure gauge through hole coincide.

[0010] The automatic mounting table for pressure gauge calibration has the characteristics that the air inlet channel is in an L-shaped structure, one end of the air inlet channel is arranged on the top of the pressure gauge conversion head, and the other end of the air inlet channel is arranged on the side of the pressure gauge conversion head; the port of the air inlet channel on the top of the pressure gauge conversion head is in communication with the inside of the pressure gauge to be detected; and a pressure inlet pipe is arranged between the port of the air inlet channel on the side of the pressure gauge conversion head and the pressure pipe through hole.

[0011] The automatic mounting table for pressure gauge calibration has the characteristics that the air inlet channel is in an L-shaped structure, one end of the air inlet channel is arranged on the top of the pressure gauge conversion head, and the other end of the air inlet channel is arranged on the side of the pressure gauge conversion head; the port of the air inlet channel on the top of the pressure gauge conversion head is in communication with the inside of the pressure gauge to be detected; and a pressure inlet pipe is arranged between the port of the air inlet channel on the side of the pressure gauge conversion head and the pressure pipe through hole.

[0012] The technical scheme of the utility model is described in further detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model relates to a kind of automatic mounting tables for pressure gauge calibration.

[0014] Explanation of reference signs:

[0015] 1-calibration box;2-calibration counterforce frame;3-support seat;

[0016] 4 - hydraulic source; 5 - pressure gauge conversion head; 6 - connecting nut;

[0017] 7 - pressure sensor; 8 - air inlet channel; 9 - pressure inlet pipe;

[0018] 10 - sealing ring; 11 - control box; 12 - pressure gauge under test. DETAILED DESCRIPTION

[0019] As Figure 1 shown, the utility model includes a calibration box 1, a calibration counterforce frame 2 arranged in the calibration box 1, and a pressure gauge calibration mechanism arranged between the calibration box 1 and the calibration counterforce frame 2 and cooperating with the calibration counterforce frame 2.

[0020] The pressure gauge calibration mechanism includes a hydraulic source 4 arranged in the calibration box 1 and disposed on the bottom surface of the calibration box 1, a pressure gauge conversion head 5 arranged on the top of the hydraulic source 4, and a connecting nut 6 arranged at the bottom of the horizontal section of the calibration counterforce frame 2; a pressure sensor 7 is arranged between the hydraulic source 4 and the pressure gauge conversion head 5; an air inlet channel 8 is formed in the inside of the pressure gauge conversion head 5; a sealing ring 10 is arranged on the top of the pressure gauge conversion head 5 and disposed between the pressure gauge conversion head 5 and a pressure gauge under test 12.

[0021] The side of the calibration box 1 is provided with a swing door, the calibration box 1 is provided with a control box 11, the control box 11 is provided with a circuit board, the circuit board is integrated with a controller, the signal output end of the pressure sensor 7 is connected with the signal input end of the controller; the hydraulic source 4 is controlled by the controller.

[0022] In actual use, the hydraulic source 4 is pressurized to push the pressure gauge conversion head 5 to move upward, the pressure gauge under test 12 is connected with the pressure gauge conversion head 5 tightly under the limitation of the calibration counterforce frame 2, the effective connection between the pressure gauge under test 12 and the pressure gauge calibration mechanism is realized, the process is simple, and the utility model is convenient to use.

[0023] The sealing ring 10 is arranged to avoid the process of wrapping adhesive tape to ensure air tightness in traditional calibration, reduce the calibration process, and save the calibration time.

[0024] It should be noted that, as Figure 1As shown, the bottom of the calibration chamber 1 is provided with multiple support bases 3, which are arranged along the circumferential direction of the calibration chamber 1. The mechanical pump connected to the pressure inlet pipe 9 is also controlled by a controller. The pressure gauge 12 under test can be conveniently installed and removed using the opening door located on the side of the calibration chamber 1; the opening door is arranged along the length of the calibration chamber 1, and when open, it facilitates the installation and removal of the pressure gauge 12 under test from under the calibration reaction frame 2. Furthermore, when the hydraulic source 4 pressurizes, the pressure sensor 7 ensures that the pressure between the pressure gauge converter head 5 and the pressure gauge 12 under test remains constant.

[0025] When using this utility model, firstly, a connecting nut 6 of the same specification needs to be installed according to the thread specification of the inlet end of the pressure gauge 12 under test. Then, according to the range of the pressure gauge 12 under test, the pressure value is set, and the pressure gauge 12 under test is connected to the determined connecting nut 6. The opening and closing door is opened, and the pressure gauge 12 under test is inserted into the pressure gauge mounting hole so that the inlet end of the pressure gauge 12 under test abuts against the sealing ring 10. Then, the hydraulic source 4 is started, and the hydraulic source 4 pressurizes and pushes the pressure gauge conversion head 5 upward, so that the inlet end of the pressure gauge 12 under test and the pressure gauge conversion head 5 are tightly connected. Then, the controller controls the mechanical pump to start pressurizing the pressure gauge 12 under test. The pressure sensor 7 ensures that the applied pressure is maintained at the set pressure value. The reading of the pressure gauge 12 under test at this time is read. The difference between the reading of the pressure gauge 12 under test and the pressure value is the reading error of the pressure gauge 12 under test at this calibration point.

[0026] In this embodiment, a pressure gauge through hole is provided on the top of the calibration box 1, and a pressure pipe through hole is provided on the side of the calibration box 1.

[0027] like Figure 1 As shown, in this embodiment, the calibration reaction frame 2 has a U-shaped structure, the horizontal section of the calibration reaction frame 2 abuts against the top surface of the calibration box 1, and the bottom of the vertical section of the calibration reaction frame 2 is fixed to the bottom surface of the calibration box 1.

[0028] In this embodiment, a pressure gauge mounting hole is provided on the horizontal section of the calibration reaction frame 2. The pressure gauge mounting hole and the pressure gauge through hole are connected, and the central axis of the pressure gauge mounting hole and the central axis of the pressure gauge through hole coincide.

[0029] like Figure 1 As shown, in this embodiment, the air intake channel 8 has an L-shaped structure. One end of the air intake channel 8 is located on the top of the pressure gauge converter head 5, and the other end of the air intake channel 8 is located on the side of the pressure gauge converter head 5. The port of the air intake channel 8 located on the top of the pressure gauge converter head 5 is connected to the interior of the pressure gauge 12 under test. A pressure inlet pipe 9 is provided between the port of the air intake channel 8 located on the side of the pressure gauge converter head 5 and the pressure pipe through hole.

[0030] In actual use, a mechanical pump is connected at the mouth of the pressure inlet pipe 9 outside the calibration tank 1, which communicates with the inside of the pressure gauge 12 to be tested through the pressure inlet pipe 9 and the gas inlet channel 8, for pressurizing the inside of the pressure gauge 12 to be tested.

[0031] The above is only the preferred embodiment of the present application, and does not limit the present application in any way. Any simple modification, change, and equivalent structural change made according to the technical essence of the present application to the above embodiment are still within the protection scope of the technical solution of the present application.

Claims

1. An automatic mounting platform for calibrating pressure gauges, characterized in that: It includes a calibration box (1), a calibration reaction frame (2) disposed inside the calibration box (1), and a pressure gauge calibration mechanism disposed between the calibration box (1) and the calibration reaction frame (2) and cooperating with the calibration reaction frame (2); The pressure gauge calibration mechanism includes a hydraulic source (4) disposed inside the calibration box (1) and arranged on the bottom surface of the calibration box (1), a pressure gauge conversion head (5) disposed on the top of the hydraulic source (4), and a connecting nut (6) disposed at the bottom of the horizontal section of the calibration reaction frame (2); a pressure sensor (7) is disposed between the hydraulic source (4) and the pressure gauge conversion head (5); an air inlet channel (8) is provided inside the pressure gauge conversion head (5); a sealing ring (10) is provided on the top of the pressure gauge conversion head (5), and the sealing ring (10) is disposed between the pressure gauge conversion head (5) and the pressure gauge (12) under test; The calibration box (1) is provided with an opening and closing door on the side. The calibration box (1) is provided with a control box (11). The control box (11) is provided with a circuit board. The circuit board is integrated with a controller. The signal output terminal of the pressure sensor (7) is connected to the signal input terminal of the controller. The hydraulic source (4) is controlled by the controller.

2. The automatic mounting platform for pressure gauge calibration according to claim 1, characterized in that: The top of the calibration box (1) is provided with a pressure gauge through hole, and the side of the calibration box (1) is provided with a pressure pipe through hole.

3. The automatic mounting platform for pressure gauge calibration according to claim 2, characterized in that: The calibration reaction frame (2) has a U-shaped structure. The horizontal section of the calibration reaction frame (2) abuts against the top surface of the calibration box (1), and the bottom of the vertical section of the calibration reaction frame (2) is fixed to the bottom surface of the calibration box (1).

4. The automatic mounting platform for pressure gauge calibration according to claim 3, characterized in that: A pressure gauge mounting hole is provided on the horizontal section of the calibration reaction frame (2). The pressure gauge mounting hole and the pressure gauge through hole are connected, and the central axis of the pressure gauge mounting hole and the central axis of the pressure gauge through hole coincide.

5. An automatic mounting platform for pressure gauge calibration according to claim 2, characterized in that: The air intake channel (8) has an L-shaped structure. One end of the air intake channel (8) is located at the top of the pressure gauge converter (5), and the other end of the air intake channel (8) is located on the side of the pressure gauge converter (5). The port of the air intake channel (8) at the top of the pressure gauge converter (5) is connected to the inside of the pressure gauge (12) under test. A pressure inlet pipe (9) is provided between the port of the air intake channel (8) on the side of the pressure gauge converter (5) and the pressure pipe through hole.

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