Pressure calibration device suitable for different altitude conditions

Abstract

The utility model discloses a pressure calibration device suitable for different altitude conditions, and belongs to the field of constant pressure control. The pressure calibration device comprises a pressure calibration device body; a pressure control structure is arranged on the pressure calibration device body; the pressure control structure comprises a pressure control cover arranged outside the pressure gauge in a sleeving mode, a pressing ring fixedly arranged at the end, close to the pressure calibration device body, of the pressure control cover in a sleeving mode, a communicating pipe fixedly installed on the pressure control cover and communicating with the interior of the pressure control cover, and an air pump fixedly arranged on the pressure calibration device body and communicating with the communicating pipe. When the pressure in the working environment of the pressure calibration device body is adjusted, the pressure gauge is in a pressure control state by sleeving the pressure calibration device body, and then the pressure control cover is subjected to air exhaust or air introduction for pressure reduction or pressurization operation through cooperation of the communicating pipe and the air pump; therefore, the pressure calibration device body can be subjected to pressure regulation operation according to different use environments, and the accuracy of data detection is improved.

Description

Technical Field

[0001] The present application relates to the technical field of constant pressure control, and in particular to a pressure calibration device suitable for use at different altitudes. Background Art

[0002] A pressure calibration device is a device that generates a known pressure value or accurately measures the pressure output of a device under test (DUT). By applying a known pressure value and comparing it with the displayed result of the device under test, the accuracy and reliability of the device under test can be evaluated and ensured.

[0003] Traditional pressure calibration devices can work well under standard atmospheric pressure conditions, but as the altitude increases or decreases, the atmospheric pressure gradually decreases or increases, which can easily lead to errors in the test data when testing equipment that relies on a fixed pressure reference for calibration.

[0004] Therefore, the present application provides a pressure calibration device suitable for conditions at different altitudes to solve the above problems. Utility Model Content

[0005] The present application provides a pressure calibration device suitable for conditions at different altitudes, aiming to solve the problem raised in the background art that the existing pressure calibration device can work well under standard atmospheric pressure conditions, but as the altitude increases or decreases, the atmospheric pressure gradually decreases or increases, which can easily lead to errors in the detection data during detection of equipment that relies on a fixed pressure reference for calibration.

[0006] To achieve the above-mentioned object, the present application provides the following technical solutions: a pressure calibration device suitable for conditions at different altitudes, comprising a pressure calibration device body;

[0007] To maintain a constant pressure in different environments, the pressure calibration device is provided with a pressure control structure. The structure includes a pressure control cover mounted on the outside of the pressure gauge and connected to the pressure calibration device, a pressure ring fixedly mounted on one end of the pressure control cover near the pressure calibration device, a connecting pipe fixedly mounted on the pressure control cover and communicating with the interior of the pressure control cover for introducing or withdrawing gas to maintain a constant pressure in the pressure gauge, and an air pump fixedly mounted on the pressure calibration device and communicating with the connecting pipe. When adjusting the pressure in the working environment of the pressure calibration device, the pressure gauge is placed in a pressure control state by being mounted on the pressure calibration device, and the connecting pipe and the air pump cooperate to withdraw or introduce gas into the pressure control cover to reduce or increase the pressure. This allows the pressure of the pressure calibration device to be adjusted according to different operating environments, thereby improving the accuracy of data detection.

[0008] Preferably, the pressure ring is provided with a sealing ring for sealing the gap between the pressure ring and the pressure calibration device body. The sealing ring can provide good sealing between the pressure ring and the pressure calibration device body during the process of reducing or increasing pressure inside the pressure control cover.

[0009] Preferably, to facilitate the removal of the pressure control shield, the connecting pipe is connected to the air pump via a hose. The characteristics of the hose facilitate the removal of the pressure control shield from the pressure calibration device body at various angles.

[0010] Preferably, to facilitate real-time monitoring of pressure changes within the pressure-controlled dome, a pressure monitoring gauge for monitoring the pressure within the pressure-controlled dome is fixedly mounted on the connecting pipe. The pressure monitoring gauge facilitates pressurization or depressurization operations within the pressure-controlled dome, improves depressurization efficiency, and makes the measured data more accurate.

[0011] Preferably, to facilitate securing the pressure control shield to the pressure calibration device body, the pressure control shield is fitted with a steel ring for driving the pressure ring to move closer to the pressure calibration device body. A clamping plate is symmetrically fixedly connected to the steel ring, which is clamped with a threaded rod. The bottom of the threaded rod is hingedly connected to an articulated seat fixedly connected to the pressure calibration device body, and the top of the threaded rod is threadedly fitted with a fixing screw sleeve for driving the clamping plate to move closer to the articulated seat. This simple structure allows for easy installation and disassembly.

[0012] Preferably, in order to facilitate the support of the pressure calibration device body, the four corners of the bottom end of the pressure calibration device body are fixedly connected with supporting legs.

[0013] When adjusting the pressure in the working environment of the pressure calibration device body, the present application puts the pressure gauge in a pressure control state by being mounted on the pressure calibration device body, and then evacuates air or introduces gas into the pressure control cover through the cooperation of the connecting pipe and the air pump to perform a pressure reduction or pressure increase operation. The pressure calibration device body can then be pressure-regulated according to different usage environments, thereby improving the accuracy of data detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of a pressure calibration device suitable for different altitude conditions;

[0015] Figure 2 for Figure 1 Bottom view of the structure in ;

[0016] Figure 3 for Figure 1 Exploded diagram of the structure.

[0017] In the picture:

[0018] 1. Pressure calibration device body; 2. Pressure control structure; 21. Pressure control cover; 22. Pressure ring; 221. Sealing ring; 23. Connecting pipe; 231. Hose; 232. Pressure monitoring gauge; 24. Air pump; 3. Steel ring; 31. Clamping plate; 4. Threaded rod; 41. Articulated seat; 42. Fixing screw sleeve; 5. Support leg. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0020] This embodiment provides a pressure calibration device suitable for different altitude conditions, such as Figure 1-3 As shown, the pressure calibration device includes a pressure calibration device body 1;

[0021] To maintain a constant pressure in different environments, the pressure calibration device body 1 is provided with a pressure control structure 2. The pressure control structure 2 includes a pressure control cover 21 mounted on the outside of the pressure gauge and connected to the pressure calibration device body 1, a pressure ring 22 fixedly mounted on the pressure control cover 21 near one end of the pressure calibration device body 1, a connecting pipe 23 fixedly mounted on the pressure control cover 21 and communicating with the interior of the pressure control cover 21 for introducing or withdrawing gas to maintain a constant pressure in the pressure gauge, and an air pump 24 fixedly mounted on the pressure calibration device body 1 and communicating with the connecting pipe 23. When adjusting the pressure in the working environment of the pressure calibration device body 1, the pressure gauge is placed in a pressure-controlled state by being mounted on the pressure calibration device body 1. The connecting pipe 23 and the air pump 24 cooperate to evacuate or introduce gas into the pressure control cover 21 to reduce or increase the pressure. This allows the pressure of the pressure calibration device body 1 to be adjusted according to different usage environments, thereby improving the accuracy of data detection.

[0022] Specifically, the pressure ring 22 is provided with a sealing ring 221 for sealing the gap between the pressure ring 22 and the pressure calibration device body 1. The sealing ring 221 is made of silicone rubber, which is heat-resistant, cold-resistant, wear-resistant, elastic, and chemically resistant. The sealing ring 221 ensures a good seal between the pressure ring 22 and the pressure calibration device body 1 during the process of reducing or increasing pressure inside the pressure control cover 21.

[0023] Specifically, to facilitate the removal of the pressure control cover 21, the connecting pipe 23 is connected to the air pump 24 through a hose 231. Due to the characteristics of the hose 231, the pressure control cover 21 can be easily removed from the pressure calibration device body 1 at various angles.

[0024] Furthermore, to facilitate real-time monitoring of pressure changes within the pressure-control dome 21, a pressure monitoring gauge 232 is fixedly mounted on the connecting pipe 23 for monitoring the pressure within the pressure-control dome 21. The pressure monitoring gauge 232 facilitates pressurization or depressurization of the pressure-control dome 21, improves depressurization efficiency, and makes the measured data more accurate.

[0025] Specifically, in order to facilitate the fixing of the pressure control cover 21 on the pressure calibration device body 1, the pressure control cover 21 is provided with a steel ring 3 for driving the pressure ring 22 to move close to the pressure calibration device body 1. A clamping plate 31 is symmetrically fixedly connected to the steel ring 3, and a threaded rod 4 is clamped on the clamping plate 31. The bottom of the threaded rod 4 is hinged with a hinge seat 41 fixedly connected to the pressure calibration device body 1, and the top of the threaded rod 4 is threadedly sleeved with a fixing screw 42 for driving the clamping plate 31 to move close to the hinge seat 41. During installation, first fix the sealing ring 221 below the pressure ring 22, then put the pressure control cover 21 on the outside of the pressure gauge, then clamp the threaded rod 4 into the clamping plate 31, and then turn the fixing screw 42 clockwise to fix the position of the pressure control cover 21; during disassembly, first rotate the fixing screw 42 counterclockwise, and then move the threaded rod 4 out of the clamping plate 31 to remove the pressure control cover 21. The structure is simple and easy to install and disassemble.

[0026] Specifically, in order to facilitate the support of the pressure calibration device body 1 , the four corners of the bottom end of the pressure calibration device body 1 are fixedly connected with supporting legs 5 .

[0027] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. A pressure calibration device suitable for use at different altitudes, comprising a pressure calibration device body (1); Its characteristics are: The pressure calibration device body (1) is provided with a pressure control structure (2), and the pressure control structure (2) comprises a pressure control cover (21) sleeved on the outside of the pressure gauge and connected to the pressure calibration device body (1), a pressure ring (22) fixedly sleeved on the pressure control cover (21) near one end of the pressure calibration device body (1), a connecting pipe (23) fixedly mounted on the pressure control cover (21) and connected to the inside of the pressure control cover (21) for introducing or extracting gas to keep the pressure gauge in a constant pressure state, and an air pump (24) fixedly arranged on the pressure calibration device body (1) and connected to the connecting pipe (23).

2. The pressure calibration device suitable for different altitude conditions according to claim 1, characterized in that: The pressure ring (22) is provided with a sealing ring (221) for sealing the gap between the pressure ring (22) and the pressure calibration device body (1).

3. The pressure calibration device suitable for different altitude conditions according to claim 1, characterized in that: The communicating pipe (23) is connected to the air pump (24) via a hose (231).

4. The pressure calibration device suitable for different altitude conditions according to claim 1, characterized in that: A pressure monitoring gauge (232) for monitoring the internal pressure of the pressure control cover (21) is fixedly mounted on the connecting pipe (23).

5. The pressure calibration device suitable for different altitude conditions according to claim 1, characterized in that: The pressure control cover (21) is provided with a steel ring (3) for driving the pressure ring (22) to move close to the pressure calibration device body (1); a clamping plate (31) is symmetrically fixedly connected to the steel ring (3); a threaded rod (4) is clamped on the clamping plate (31); the bottom of the threaded rod (4) is hinged with an articulated seat (41) fixedly connected to the pressure calibration device body (1); the top of the threaded rod (4) is threadedly provided with a fixed screw sleeve (42) for driving the clamping plate (31) to move close to the articulated seat (41).

6. The pressure calibration device suitable for different altitude conditions according to claim 1, characterized in that: The four corners of the bottom end of the pressure calibration device body (1) are fixedly connected with supporting legs (5).

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