Pressure gauge calibration device

Abstract

The utility model discloses a pressure gauge calibration device, and relates to the technical field of calibration devices, the pressure gauge calibration device comprises an operation table and a pressure gauge to be measured, the upper end of the operation table is fixedly provided with a connecting seat, the front end of the operation table is provided with a water inlet pipe, and the surface of the water inlet pipe is provided with a standard pressure gauge. A fixing frame is fixedly installed on the rear side of the upper end of the operation table. According to the pressure gauge calibration device, a telescopic cylinder, a lower supporting plate, an upper pressing plate and the like are arranged, a to-be-tested pressure gauge is installed between the upper pressing plate and the lower supporting plate, and the telescopic cylinder pushes a second lifting seat to move downwards, so that the upper pressing plate pushes the to-be-tested pressure gauge to move downwards, and a connector enters a conical groove and is tightly attached to a rubber sealing gasket; and after verification is completed, the telescopic air cylinder drives the second lifting seat to move upwards, so that the upper pressing plate is far away from the to-be-tested pressure gauge, and the to-be-tested pressure gauge can be taken out very conveniently, so that the working efficiency of verification is ensured.

Description

Technical Field

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

[0002] The pressure gauge calibration device is a device used to detect and calibrate the accuracy and precision of the pressure gauge. It usually consists of a master standard pressure gauge (or working standard) of known accuracy connected to a pressure gauge under test. The calibration is achieved by comparing it with the master standard pressure gauge.

[0003] For example, patent number CN207816511U discloses a pressure gauge calibration device, including a water inlet pipe, a water storage steel cylinder and a drain pipe connected in sequence from left to right, the water inlet pipe is provided with a water inlet valve, the drain pipe is provided with a drain valve, the water inlet pipe, the water storage steel cylinder and the drain pipe are coaxial; a standard installation port and a plurality of installation ports to be calibrated are provided on the water storage steel cylinder, and a level is provided on both ends of the water storage steel cylinder; two sleeves are vertically welded under the water storage steel cylinder, and the two sleeves are equidistant from the adjacent end faces of the water storage steel cylinder; a supporting bracket is provided under the sleeve, and a leveling screw coaxial with the sleeve is provided on the supporting bracket, the leveling screw is threadedly connected to the supporting bracket, and the upper end of the leveling screw is located inside the sleeve. The utility model can simply and quickly calibrate the pressure gauge required for curtain grouting construction, reduce the calibration cost, and ensure the accuracy of the grouting pressure to ensure the construction quality;

[0004] However, in the calibration of the pressure gauge, the pressure gauge and the equipment need to be connected, and sufficient sealing effect is required. However, conventional threaded connections or the use of external objects for reinforced sealing make the overall disassembly and installation extremely inconvenient, affecting the work efficiency of the calibration work. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a pressure gauge calibration device, which solves the problem that conventional threaded connections or the use of external objects for reinforced sealing make the overall disassembly and installation extremely inconvenient, affecting the work efficiency of the calibration work.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a pressure gauge calibration device, including an operating table and a pressure gauge to be tested, a connecting seat is fixedly installed on the upper end of the operating table, a water inlet pipe is arranged at the front end of the operating table, a standard pressure gauge is installed on the surface of the water inlet pipe, a fixing frame is fixedly installed on the rear side of the upper end of the operating table, the fixing frames are distributed at equal intervals, a guide rod is arranged on the inner side of the fixing frame, a first lifting seat is slidably connected to the surface of the guide rod, a second lifting seat is arranged on the surface of the guide rod above the first lifting seat, a telescopic cylinder is fixedly installed on the upper end of the fixing frame, a lower supporting plate is installed at the front end of the first lifting seat, an upper pressing plate is installed at the front end of the second lifting seat, the upper end surface of the lower supporting plate and the lower end surface of the upper pressing plate are both designed with an arc structure, the lower supporting plate and the upper pressing plate are respectively fitted and connected with the upper and lower ends of the pressure gauge to be tested, a positioning baffle is installed on the upper end of the lower supporting plate, and a connector is fixedly installed on the lower end of the pressure gauge to be tested.

[0007] Preferably, a conical groove is formed on the upper end surface of the connecting seat, a rubber sealing pad is provided on the inner side of the conical groove, the upper end of the connecting seat is matched with the connecting head, and the connecting seat and the water inlet pipe correspond to the fixing frame one by one respectively.

[0008] Preferably, two guide rods are arranged on the left and right sides of the fixing frame, the upper ends of the two guide rods are fixedly connected to the fixing frame, the lower ends of the guide rods are fixedly connected to the operating table, and the first lifting seat and the second lifting seat are both slidably connected to the guide rods.

[0009] Preferably, the upper end of the second lifting seat is fixedly connected to the output end of the telescopic cylinder, the outer side of the guide rod is sleeved with a connecting spring, the upper end of the connecting spring is fixedly connected to the first lifting seat, and the lower end of the connecting spring is fixedly connected to the operating table.

[0010] Preferably, two lower supporting plates are symmetrically arranged on the left and right sides of the first lifting seat, and two upper pressing plates are symmetrically arranged on the left and right sides of the second lifting seat, and the lower supporting plates and the upper pressing plates are symmetrically distributed.

[0011] Preferably, two positioning baffles are arranged on the front and rear sides of the lower support plate, the right end of the positioning baffle is slidably connected to the lower support plate through a slider, and the left end of the positioning baffle is movably connected to the lower support plate through an adjusting component.

[0012] Preferably, the adjustment assembly includes a double-headed threaded rod, the double-headed threaded rod is rotatably installed inside the lower support plate, the front end of the double-headed threaded rod extends to the outside of the lower support plate and is fixedly connected to a turning handle, the front and rear ends of the surface of the double-headed threaded rod are threadedly connected to a moving block, the moving block and the left end of the positioning baffle are fixedly connected by a connecting block, and the connecting block and the lower support plate are slidably connected. Beneficial Effects

[0013] The utility model provides a pressure gauge calibration device. Compared with the prior art, it has the following beneficial effects:

[0014] 1. The pressure gauge calibration device installs the pressure gauge to be tested between the upper pressure plate and the lower supporting plate by arranging a telescopic cylinder, a lower supporting plate and an upper pressure plate, and pushes the second lifting seat to move downward by the telescopic cylinder, so that the upper pressure plate pushes the pressure gauge to be tested to move downward, so that the connecting head enters the conical groove and fits tightly with the rubber sealing gasket to achieve sealing. After the calibration is completed, the telescopic cylinder drives the second lifting seat to move upward, so that the upper pressure plate is away from the pressure gauge to be tested, and the pressure gauge to be tested can be taken out, which is very convenient and ensures the working efficiency of the calibration.

[0015] 2. The pressure gauge calibration device is provided with a connecting seat, an adjustment component and a positioning baffle, etc. The conical groove of the connecting seat is convenient for adapting to connecting heads of different sizes, and the positioning baffle is used to position the pressure gauge to be tested, so that the centers of the connecting head and the connecting seat are relatively aligned, and the rotating handle drives the double-headed threaded rod to rotate, so that the moving block can drive the two positioning baffles to move, and the distance between the two positioning baffles is adjusted, so as to achieve adaptation to pressure gauges of different specifications to be tested, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the connecting seat of the utility model.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper pressing plate of the utility model.

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the lower support plate of the utility model.

[0020] In the figure: 1. operating table; 2. connecting seat; 21. rubber sealing pad; 3. water inlet pipe; 4. standard pressure gauge; 5. fixing frame; 6. guide rod; 7. first lifting seat; 71. connecting spring; 8. second lifting seat; 9. telescopic cylinder; 10. lower support plate; 101. double-headed threaded rod; 102. turning handle; 103. moving block; 104. connecting block; 11. upper pressure plate; 12. positioning baffle; 13. pressure gauge to be tested; 14. connecting head. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution: a pressure gauge calibration device, including an operating table 1 and a pressure gauge 13 to be tested, a connecting seat 2 is fixedly installed on the upper end of the operating table 1, a water inlet pipe 3 is arranged at the front end of the operating table 1, a standard pressure gauge 4 is installed on the surface of the water inlet pipe 3, a fixing frame 5 is fixedly installed on the rear side of the upper end of the operating table 1, a conical groove is opened on the upper end surface of the connecting seat 2, a rubber sealing pad 21 is arranged on the inner side of the conical groove, the upper end of the connecting seat 2 is adapted to the connecting head 14, the connecting seat 2 and the water inlet pipe 3 correspond to the fixing frame 5 one by one, the fixing frames 5 are distributed at equal intervals, a plurality of fixing frames 5 facilitate the calibration of a plurality of pressure gauges, and improve the work efficiency, and the conical groove is convenient for adapting to the connecting heads 14 of different sizes;

[0023] A guide rod 6 is provided on the inner side of the fixed frame 5, and a first lifting seat 7 is slidably connected to the surface of the guide rod 6. A second lifting seat 8 is provided on the surface of the guide rod 6 above the first lifting seat 7. Two guide rods 6 are provided on the left and right sides of the fixed frame 5. The upper ends of the two guide rods 6 are fixedly connected to the fixed frame 5, and the lower ends of the guide rods 6 are fixedly connected to the operating table 1. The first lifting seat 7 and the second lifting seat 8 are both slidably connected to the guide rod 6. A telescopic cylinder 9 is fixedly installed on the upper end of the fixed frame 5, and the upper end of the second lifting seat 8 is fixedly connected to the output end of the telescopic cylinder 9. A connecting spring 71 is sleeved on the outer side of the guide rod 6, and the upper end of the connecting spring 71 is fixedly connected to the first lifting seat 7, and the lower end of the connecting spring 71 is fixedly connected to the operating table 1. The second lifting seat 8 is driven to move up and down by the telescopic cylinder 9, which facilitates the installation and disassembly of the pressure gauge 13 to be tested, thereby improving convenience.

[0024] A lower support plate 10 is installed at the front end of the first lifting seat 7, and an upper pressure plate 11 is installed at the front end of the second lifting seat 8. The lower support plates 10 are symmetrically arranged on the left and right sides of the first lifting seat 7, and the upper pressure plates 11 are symmetrically arranged on the left and right sides of the second lifting seat 8. The lower support plates 10 and the upper pressure plates 11 are symmetrically distributed, and the upper end surface of the lower support plate 10 and the lower end surface of the upper pressure plate 11 are both designed in an arc-shaped structure. The lower support plates 10 and the upper pressure plates 11 are respectively connected to the upper and lower ends of the pressure gauge 13 to be tested. The two ends are fitted and connected, and a positioning baffle 12 is installed on the upper end of the lower support plate 10. Two positioning baffles 12 are arranged on the front and rear sides of the lower support plate 10. The right end of the positioning baffle 12 is slidably connected to the lower support plate 10 through a slider, and the left end of the positioning baffle 12 is movably connected to the lower support plate 10 through an adjustment component. The adjustment component includes a double-headed threaded rod 101, and the double-headed threaded rod 101 is rotatably installed inside the lower support plate 10. The front end of the double-headed threaded rod 101 extends to the outer side of the lower support plate 10 and is fixed A rotating handle 102 is fixedly connected, and the front and rear ends of the double-headed threaded rod 101 are threadedly connected with a moving block 103. The moving block 103 and the left end of the positioning baffle 12 are fixedly connected by a connecting block 104. The connecting block 104 and the lower support plate 10 are slidably connected. The lower end of the pressure gauge 13 to be tested is fixedly installed with a connector 14. The pressure gauge 13 to be tested is placed between the upper pressure plate 11 and the lower support plate 10. The lower end of the pressure gauge 13 to be tested is fitted with the lower support plate 10, and the positioning baffles 12 on both sides are treated The pressure gauge 13 is positioned so that the lower end of the connector 14 is aligned with the center of the connector seat 2, and the double-headed threaded rod 101 is rotated by rotating the handle 102 to adjust the distance between the two positioning baffles 12 to adapt to pressure gauges of different sizes. The telescopic cylinder 9 pushes the upper pressure plate 11 to move downward and contact the pressure gauge 13 to be tested, so that the pressure gauge 13 to be tested can be pressed downward, so that the connector 14 enters the conical groove and fits tightly with the rubber sealing pad 21 to achieve sealing.

[0025] During operation, the pressure gauge 13 to be tested is placed between the upper pressing plate 11 and the lower supporting plate 10, and the lower end of the pressure gauge 13 to be tested is fitted with the lower supporting plate 10, and the positioning baffles 12 on both sides form a positioning for the pressure gauge 13 to be tested, so that the lower end of the connecting head 14 is aligned with the center of the connecting seat 2, and the double-headed threaded rod 101 is driven to rotate by rotating the turning handle 102, and the spacing between the two positioning baffles 12 is adjusted to adapt to pressure gauges of different sizes, and the telescopic cylinder 9 pushes the second lifting seat 8 to move downward, and the upper pressing plate 11 moves synchronously and contacts with the pressure gauge 13 to be tested, so that the pressure gauge 13 to be tested can be pressed downward, so that the connecting head 14 enters the conical groove and fits tightly with the rubber sealing pad 21 to achieve sealing. The conical groove is convenient for adapting to connecting heads 14 of different sizes, which improves convenience. After the verification is completed, the telescopic cylinder 9 drives the second lifting seat 8 to move upward, and the upper pressing plate 11 is away from the pressure gauge 13 to be tested, so that the pressure gauge 13 to be tested is convenient to take out.

[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A pressure gauge calibration device, comprising an operating table (1) and a pressure gauge to be tested (13), characterized in that: A connecting seat (2) is fixedly mounted on the upper end of the operating table (1); a water inlet pipe (3) is arranged at the front end of the operating table (1); a standard pressure gauge (4) is installed on the surface of the water inlet pipe (3); a fixing frame (5) is fixedly mounted on the rear side of the upper end of the operating table (1); the fixing frames (5) are distributed at equal intervals; a guide rod (6) is arranged on the inner side of the fixing frame (5); a first lifting seat (7) is slidably connected to the surface of the guide rod (6); a second lifting seat (8) is arranged on the surface of the guide rod (6) above the first lifting seat (7); and the fixing frame (5) is fixedly mounted on the rear side of the upper end of the operating table (1); the fixing frames (5) are arranged at equal intervals; a guide rod (6) is arranged on the inner side of the fixing frame (5); a first lifting seat (7) is slidably connected to the surface of the guide rod (6); a second lifting seat (8) is arranged on the surface of the guide rod (6) above the first lifting seat (7); and A telescopic cylinder (9) is fixedly mounted on the upper end of the fixed frame (5); a lower support plate (10) is mounted on the front end of the first lifting seat (7); an upper pressure plate (11) is mounted on the front end of the second lifting seat (8); the upper end surface of the lower support plate (10) and the lower end surface of the upper pressure plate (11) are both designed as arc-shaped structures; the lower support plate (10) and the upper pressure plate (11) are respectively fitted and connected to the upper and lower ends of the pressure gauge (13) to be measured; a positioning baffle (12) is mounted on the upper end of the lower support plate (10); and a connector (14) is fixedly mounted on the lower end of the pressure gauge (13) to be measured.

2. A pressure gauge calibration device according to claim 1, characterized in that: The upper end surface of the connection seat (2) is provided with a conical groove, the inner side of the conical groove is provided with a rubber sealing pad (21), the upper end of the connection seat (2) is adapted to the connection head (14), and the connection seat (2), the water inlet pipe (3) and the fixing frame (5) correspond one to one.

3. A pressure gauge calibration device according to claim 1, characterized in that: Two guide rods (6) are arranged on the left and right sides of the fixed frame (5); the upper ends of the two guide rods (6) are fixedly connected to the fixed frame (5); the lower ends of the guide rods (6) are fixedly connected to the operating table (1); and the first lifting seat (7) and the second lifting seat (8) are both slidably connected to the guide rods (6).

4. A pressure gauge calibration device according to claim 1, characterized in that: The upper end of the second lifting seat (8) is fixedly connected to the output end of the telescopic cylinder (9); a connecting spring (71) is sleeved on the outer side of the guide rod (6); the upper end of the connecting spring (71) is fixedly connected to the first lifting seat (7); and the lower end of the connecting spring (71) is fixedly connected to the operating table (1).

5. A pressure gauge calibration device according to claim 1, characterized in that: Two lower support plates (10) are symmetrically arranged on the left and right sides of the first lifting seat (7), and two upper pressure plates (11) are symmetrically arranged on the left and right sides of the second lifting seat (8). The lower support plates (10) and the upper pressure plates (11) are symmetrically distributed.

6. A pressure gauge calibration device according to claim 1, characterized in that: Two positioning baffles (12) are provided on both sides of the lower support plate (10), the right end of the positioning baffle (12) is slidably connected to the lower support plate (10) via a slider, and the left end of the positioning baffle (12) is movably connected to the lower support plate (10) via an adjustment component.

7. A pressure gauge calibration device according to claim 6, characterized in that: The adjustment assembly comprises a double-headed threaded rod (101), the double-headed threaded rod (101) is rotatably mounted inside the lower support plate (10), the front end of the double-headed threaded rod (101) extends to the outside of the lower support plate (10) and is fixedly connected to a rotating handle (102), the front and rear ends of the surface of the double-headed threaded rod (101) are both threadedly connected to a moving block (103), the moving block (103) and the left end of the positioning baffle (12) are fixedly connected via a connecting block (104), and the connecting block (104) and the lower support plate (10) are slidably connected.

Images