Pressure gauge calibration device

Abstract

The utility model relates to the technical field of pressure gauge calibration, and discloses a pressure gauge calibration device which comprises a limiting device and a pressure detection tank body, the upper end of the pressure detection tank body is in threaded connection with a detection pressure gauge, and the upper end of the pressure detection tank body is provided with a stop valve. A piston plate is movably connected to the lower end of the interior of the pressure detection tank body, a display panel is installed at the lower end of the front face of the pressure detection tank body, an electric push rod is installed at the lower end of the pressure detection tank body, and the limiting device is in threaded connection to the surface of the top end of the pressure detection tank body. According to the pressure gauge calibration device, the blocking assembly, the limiting ring and the limiting metal plate are arranged, the blocking assembly can conduct secondary limiting on the detection pressure gauge and the pressure detection tank body, and when the connection between the pressure detection tank body and the detection pressure gauge is loosened, secondary limiting can be effectively conducted on the detection pressure gauge; and the safety of the pressure detection meter can be protected, so that the service time of the device can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauge calibration, in particular to a pressure gauge calibration device. 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 of the device and the operation of the pressure gauge calibration device for oil fields. For example, if the pressure of the electric pressure cooker is too low, it will affect the cooking efficiency of the product. If the pressure of the electric pressure cooker is too high, there will be safety hazards in the pressure gauge calibration device for oil fields.

[0003] The prior art discloses a pressure gauge calibration device with application number: CN202020929132.3, which includes a sealed tank, a piston and a sealed cavity are arranged in the sealed tank, the piston is sealedly connected to the sealed tank, a liquid inlet and a pressure gauge interface are arranged on the side wall of the sealed tank, the liquid inlet and the pressure gauge interface are both connected to the sealed cavity, and the piston can compress the sealed cavity. The pressure gauge calibration device can conveniently calibrate the pressure gauge, reduce the workload, and alleviate the work intensity.

[0004] The above-mentioned pressure gauge is connected to the upper end of the sealed tank by threads, and the pressure gauge only performs a single-mode limit operation. However, when the connection between the pressure gauge and the sealed tank is loose, it will cause a strong pressure inside the sealed tank, pushing the pressure gauge to move upward, causing the pressure gauge to detach from the sealed tank, thereby causing damage to the sealed tank that needs to be calibrated. Utility Model Content

[0005] The purpose of the utility model is to provide a pressure gauge calibration device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure gauge calibration device, comprising a limit device and a pressure detection tank body, the upper end of the pressure detection tank body is threadedly connected with a detection pressure gauge, the upper end of the pressure detection tank body is installed with a stop valve, the lower end of the inner part of the pressure detection tank body is movably connected with a piston plate, the lower end of the front side of the pressure detection tank body is installed with a display panel, the lower end of the pressure detection tank body is installed with an electric push rod, and the limit device is threadedly connected to the top surface of the pressure detection tank body.

[0007] The limiting device includes a limiting metal ring, a limiting metal plate, a coil spring and a blocking assembly. The limiting metal ring is located at the lower end of the limiting device, the limiting metal ring is installed at the lower end of the blocking assembly, the coil spring is installed at the lower end of the blocking assembly, and the blocking assembly is installed on the bottom end surface of the limiting metal plate.

[0008] Preferably, the blocking assembly includes a metal blocking plate, a fixed block, a metal sliding rod and a hexagonal nut, the metal sliding rod is located at the lower end of the blocking assembly, the fixed block is fixedly connected to the front side of the metal sliding rod, the metal blocking plate is movably connected to the middle position of the metal sliding rod, and the hexagonal nut is threadedly connected to the upper end of the metal blocking plate.

[0009] Preferably, the metal blocking plate is movably connected to the lower end of the detection pressure gauge, the metal blocking plate is composed of a metal plate and a threaded rod, the metal plate is movably connected to the lower end of the detection pressure gauge, and the metal plate is movably connected to the surface of the metal sliding rod, there are two metal blocking plates, and the two metal blocking plates are distributed front and back.

[0010] Preferably, the limiting metal ring is threadedly connected to the top surface of the pressure detection tank body, the fixed block is movably connected to the top surface of the pressure detection tank body, the top surface of the pressure detection tank body is fixedly connected with a vertical threaded rod, and the vertical threaded rod is movably connected to the lower end of the limiting metal ring, so that the position of the limiting metal ring can be limited and fixed, and the threaded end of the vertical threaded rod is connected to a limiting nut.

[0011] Preferably, the coil spring is fixedly connected to the inward surface of the fixed block, and the coil spring is fixedly connected to the outward surface of the metal blocking plate. There are four coil springs, two coil springs form a group, the two groups of coil springs are distributed left and right, and the two coil springs on the same side are distributed front and back. The coil spring can push the metal blocking plate to move back and forth, making it convenient to adjust the distance between the two metal blocking plates, so that detection pressure gauges of different specifications can be limited and replaced.

[0012] Preferably, the metal blocking plate is movably connected to the inner wall surface of the limiting metal plate, and the hexagonal nut is movably connected to the top surface of the limiting metal plate. The hexagonal nut is rotated at the upper end of the metal blocking plate, and the metal blocking plate can be threadedly fixed on the top surface of the limiting metal plate, thereby determining the position of the metal blocking plate and facilitating the adjustment of the detection pressure gauge for replacement.

[0013] Preferably, the piston plate is fixedly connected to the top surface of the piston rod inside the electric push rod, and the electric push rod can move the piston plate up and down on the inner wall surface of the pressure detection tank body. At the same time, the display panel can display the data of the electric push rod in real time, so that the calibration operation of the detection pressure gauge can be started according to the existing data.

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

[0015] 1. The pressure gauge calibration device is provided with a blocking component, a limiting ring and a limiting metal plate. The blocking component can perform secondary limiting on the detection pressure gauge and the pressure detection tank body. When the connection between the pressure detection tank body and the detection pressure gauge is loose, the detection pressure gauge can be effectively limited for the secondary position, which can protect the safety of the detection pressure gauge, thereby increasing the use time of the device.

[0016] 2. The pressure gauge calibration device is provided with a hexagonal nut, a metal blocking plate and a limiting metal plate. The hexagonal nut rotates on the upper end of the metal blocking plate, so that the metal blocking plate and the limiting metal plate can be threadedly fixed, and the position of the metal blocking plate can be effectively adjusted. Secondary limiting operations can be performed on detection pressure gauges of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall three-dimensional schematic diagram of the utility model;

[0018] Figure 2 It is a top view schematic diagram of the utility model;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the cross section at AA;

[0020] Figure 4 It is a three-dimensional schematic diagram of the limiting device of the utility model;

[0021] Figure 5 For this utility model Figure 4 A partial enlarged schematic diagram of the structure at point A in the middle.

[0022] In the figure: 1. limit device; 11. limit metal ring; 12. limit metal plate; 13. coil spring; 14. blocking assembly; 141. metal blocking plate; 142. fixing block; 143. metal slide rod; 144. hexagonal nut; 2. pressure detection tank; 3. stop valve; 4. detection pressure gauge; 5. electric push rod; 6. display panel; 7. piston plate. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5 , the utility model provides the following technical solutions:

[0025] A pressure gauge calibration device comprises a limit device 1 and a pressure detection tank body 2, wherein the upper end of the pressure detection tank body 2 is threadedly connected with a detection pressure gauge 4, the upper end of the pressure detection tank body 2 is installed with a stop valve 3, the lower end of the interior of the pressure detection tank body 2 is movably connected with a piston plate 7, the piston plate 7 is fixedly connected to the top surface of the piston rod inside an electric push rod 5, the electric push rod can move the piston plate 7, the piston plate 7 moves up and down on the inner wall surface of the pressure detection tank body 2, and the display panel 6 can display the data of the electric push rod 5 in real time, so that the detection pressure gauge 4 can be calibrated according to the existing data, the display panel 6 is installed at the lower end of the front side of the pressure detection tank body 2, the lower end of the pressure detection tank body 2 is installed with an electric push rod 5, and the limit device 1 is threadedly connected to the top surface of the pressure detection tank body 2.

[0026] The limiting device 1 includes a limiting metal ring 11, a limiting metal plate 12, a coil spring 13 and a blocking assembly 14. The limiting metal ring 11 is located at the lower end of the limiting device 1, the limiting metal ring 11 is installed at the lower end of the blocking assembly 14, the coil spring 13 is installed at the lower end of the blocking assembly 14, and the blocking assembly 14 is installed on the bottom end surface of the limiting metal plate 12.

[0027] The blocking assembly 14 includes a metal blocking plate 141, a fixing block 142, a metal slide bar 143 and a hexagonal nut 144. The metal slide bar 143 is located at the lower end of the blocking assembly 14. The fixing block 142 is fixedly connected to the front of the metal slide bar 143. The limiting metal ring 11 is threadedly connected to the top surface of the pressure detection tank body 2. The fixing block 142 is movably connected to the top surface of the pressure detection tank body 2. The top surface of the pressure detection tank body 2 is fixedly connected with a vertical threaded rod, and the vertical threaded rod is movably connected to the limiting metal ring 11. 1, so that the position of the limiting metal ring 11 can be limited and fixed, the threaded end of the vertical threaded rod is connected to the limiting nut, the coil spring 13 is fixedly connected to the inner side surface of the fixing block 142, and the coil spring 13 is fixedly connected to the outer side surface of the metal blocking plate 141. The number of coil springs 13 is four, two coil springs 13 form a group, the two groups of coil springs 13 are distributed left and right, and the two coil springs 13 on the same side are distributed front and back. The coil spring 13 can push the metal blocking plate 141 to move back and forth, which is convenient for adjusting the distance between the two metal blocking plates 141, so that different specifications of the detection pressure gauge 4 can be limited and replaced, the metal blocking plate 141 is movably connected to the middle position of the metal sliding rod 143, the metal blocking plate 141 is movably connected to the lower end of the detection pressure gauge 4, the metal blocking plate 141 is composed of a metal plate and a threaded rod, the metal plate is movably connected to the lower end of the detection pressure gauge 4, and the metal plate is movably connected to the surface of the metal sliding rod 143, the number of metal blocking plates 141 is two, and the two metal blocking The plates 141 are distributed front and back, the hexagonal nut 144 is threadedly connected to the upper end of the metal blocking plate 141, the metal blocking plate 141 is movably connected to the inner wall surface of the limiting metal plate 12, the hexagonal nut 144 is movably connected to the top surface of the limiting metal plate 12, the hexagonal nut 144 rotates at the upper end of the metal blocking plate 141, and the metal blocking plate 141 can be threadedly fixed on the top surface of the limiting metal plate 12, so that the position of the metal blocking plate 141 can be determined, which is convenient for adjusting the detection pressure gauge 4 for replacement.

[0028] When in use, the limiting metal ring 11 is pushed downward, and the bottom surface of the limiting metal ring 11 is connected to the top surface of the pressure detection tank body 2, so that the limiting metal ring 11 and the pressure detection tank body 2 can be preliminarily connected.

[0029] Push the limiting metal plate 12 downward to allow the limiting metal plate 12 and the top surface of the fixing block 142 to be threadedly fixed, so that the limiting metal plate 12 and the fixing block 142 can be threadedly fixed, and the limiting metal plate 12 can slide along the upper end of the metal blocking plate 141.

[0030] By rotating the limiting nut, the limiting nut can threadably fix the limiting metal ring 11 and the pressure detection tank body 2 .

[0031] Push the detection pressure gauge 4 downward to insert the detection pressure gauge 4 into the upper end of the pressure detection tank body 2, and then rotate the detection pressure gauge 4. The detection pressure gauge 4 can be fixed with the upper end of the pressure detection tank body 2 by threads, and the position of the detection pressure gauge 4 can be determined.

[0032] By rotating the hexagonal nut 144 , the hexagonal nut 144 is separated from the metal blocking plate 141 , and the metal blocking plate 141 can slide on the surface of the metal slide bar 143 , so that the metal blocking plate 141 and the lower end of the detection pressure gauge 4 are movably connected, thereby determining the position of the detection pressure gauge 4 .

[0033] The coil spring 13 starts to rebound, and the coil spring 13 can push the metal blocking plate 141. The metal blocking plate 141 and the lower end of the detection pressure gauge 4 are movably connected, so that the detection pressure gauge 4 and the upper end of the pressure detection tank body 2 can be fixed for a second time.

[0034] By rotating the hexagonal nut 144 , the hexagonal nut 144 can threadably fix the metal blocking plate 141 and the limiting metal plate 12 , thereby determining the positions of the detection pressure gauge 4 and the pressure detection tank body 2 .

[0035] Start pouring hydraulic oil into the pressure detection tank body 2 through the stop valve 3 so that the hydraulic oil is located inside the pressure detection tank body 2, and start pushing the piston plate 7 upward through the electric push rod 5, so that the pressure of the detection pressure gauge 4 can be calibrated.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure gauge calibration device, comprising a limit device (1) and a pressure detection tank (2), characterized in that: The upper end of the pressure detection tank body (2) is threadedly connected to a detection pressure gauge (4), the upper end of the pressure detection tank body (2) is installed with a stop valve (3), the lower end of the interior of the pressure detection tank body (2) is movably connected to a piston plate (7), the lower end of the front of the pressure detection tank body (2) is installed with a display panel (6), the lower end of the pressure detection tank body (2) is installed with an electric push rod (5), and the limit device (1) is threadedly connected to the top surface of the pressure detection tank body (2); The limiting device (1) comprises a limiting metal ring (11), a limiting metal plate (12), a coil spring (13) and a blocking component (14); the limiting metal ring (11) is located at the lower end of the limiting device (1), the limiting metal ring (11) is mounted on the lower end of the blocking component (14), the coil spring (13) is mounted on the lower end of the blocking component (14), and the blocking component (14) is mounted on the bottom end surface of the limiting metal plate (12).

2. A pressure gauge calibration device according to claim 1, characterized in that: The blocking assembly (14) comprises a metal blocking plate (141), a fixing block (142), a metal sliding rod (143) and a hexagonal nut (144); the metal sliding rod (143) is located at the lower end of the blocking assembly (14); the fixing block (142) is fixedly connected to the front side of the metal sliding rod (143); the metal blocking plate (141) is movably connected to the middle position of the metal sliding rod (143); and the hexagonal nut (144) is threadedly connected to the upper end of the metal blocking plate (141).

3. A pressure gauge calibration device according to claim 2, characterized in that: The metal blocking plate (141) is movably connected to the lower end of the detection pressure gauge (4).

4. A pressure gauge calibration device according to claim 3, characterized in that: The limiting metal ring (11) is threadedly connected to the top surface of the pressure detection tank body (2), and the fixing block (142) is movably connected to the top surface of the pressure detection tank body (2).

5. A pressure gauge calibration device according to claim 4, characterized in that: The coil spring (13) is fixedly connected to the inward surface of the fixing block (142), and the coil spring (13) is fixedly connected to the outward surface of the metal blocking plate (141).

6. A pressure gauge calibration device according to claim 5, characterized in that: The metal blocking plate (141) is movably connected to the inner wall surface of the limiting metal plate (12), and the hexagonal nut (144) is movably connected to the top end surface of the limiting metal plate (12).

7. A pressure gauge calibration device according to claim 6, characterized in that: The piston plate (7) is fixedly connected to the top end surface of the piston rod inside the electric push rod (5).

Images