CN215263585U

CN215263585U - Accelerometer testing arrangement under low atmospheric pressure environment

Info

Publication number: CN215263585U
Application number: CN202121444367.4U
Authority: CN
Inventors: 张伟; 万丽霞; 张瀚文
Original assignee: Beijing Walkang Science And Technology Ltd; Beijing Information Science and Technology University
Current assignee: Beijing Walkang Science And Technology Ltd; Beijing Information Science and Technology University
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-12-21
Anticipated expiration: 2031-06-28

Abstract

The utility model provides an accelerometer testing arrangement under low atmospheric pressure environment, accelerometer testing arrangement includes under this low atmospheric pressure environment: the testing device comprises a testing device body and a temperature adjusting device; the testing device body comprises a testing box, a testing cavity arranged on the testing box and a cover plate hinged to the testing box; the side wall of the test box is fixedly connected with a connector, an exhaust pipe and an air inlet pipe, the side wall of the test box is fixedly connected with a connecting pipe communicated with the test cavity, and the connecting pipe is fixedly connected with a barometer; the temperature adjusting device comprises a cooling device and a heating device. The utility model has the advantages that: the accelerometer can be tested in a low-pressure environment through the arranged testing device body; meanwhile, the temperature adjusting device is arranged, so that the environment that workers feel comfortable can be created, and the working efficiency is improved.

Description

Accelerometer testing arrangement under low atmospheric pressure environment

Technical Field

The utility model relates to accelerometer test technical field especially involves an accelerometer testing arrangement under low atmospheric pressure environment.

Background

The quartz flexible accelerometer is a force balance pendulum type accelerometer, has the characteristics of good stability, high precision, simple structure, easy miniaturization and the like, and is the accelerometer which is most widely applied to navigation, guidance and control systems of aviation, aerospace, navigation and various strategic/tactical weapons at present.

The quartz flexible accelerometer adopts air film damping to adjust the damping of the accelerometer, and once the structure of the quartz flexible accelerometer is determined, the air film damping is determined by the density of air. After the quartz flexible accelerometer is manufactured, the air density inside the accelerometer is determined by the air density of the assembly line site environment. If the air leakage of the accelerometer occurs in a low-air-pressure application environment and the air density in the gauge head is reduced, the air film damping effect is reduced, the dynamic performance of the accelerometer is deteriorated, and the stability of the accelerometer is deteriorated. Therefore, after the quartz flexible accelerometer is produced and packaged, the damping and other dynamic performance indexes such as overshoot, the number of oscillation waves and the like need to be tested under the low-pressure environment condition to determine whether the accelerometer has the air leakage condition.

In order to test the accelerometer conveniently, the accelerometer testing device is generally placed in a workshop so as to test the accelerometer conveniently, but when the ambient temperature in the workshop is too high or too low, the testing efficiency of workers can be affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide an accelerometer testing arrangement under low atmospheric pressure environment.

The problem of in order to test the accelerometer conveniently, thereby accelerometer testing arrangement generally places conveniently in the workshop and tests the accelerometer, but the interior ambient temperature of workshop too high or cross the test efficiency that can influence the staff when low is solved.

The utility model discloses a realize through following technical scheme:

the utility model provides an accelerometer testing arrangement under low atmospheric pressure environment, accelerometer testing arrangement includes under this low atmospheric pressure environment: the testing device comprises a testing device body and a temperature adjusting device;

the testing device body comprises a testing box, a testing cavity arranged on the testing box and a cover plate hinged to the testing box; the side wall of the test box is fixedly connected with a connector, an exhaust pipe and an air inlet pipe, the side wall of the test box is fixedly connected with a connecting pipe communicated with the test cavity, and the connecting pipe is fixedly connected with a barometer;

the temperature adjusting device comprises a cooling device and a heating device.

Preferably, the exhaust pipe and the air inlet pipe are both fixedly connected with an electromagnetic valve for sealing the exhaust pipe and the air inlet pipe.

Preferably, the heating device comprises a first box fixedly connected with the test box, the first box is internally and fixedly connected with a blowing device and an electric heating wire, the lateral wall of the first box is fixedly connected with an air outlet pipe, and one end of the air outlet pipe is fixedly connected with a dust screen.

Preferably, the blowing device is fixedly connected with an inner wall of the first box body, a plurality of air inlets are formed in the inner wall provided with the blowing device, and the dust screen is fixedly connected in each air inlet; and the side wall fixedly connected with the air outlet pipe is opposite to the inner wall provided with the blowing device.

Preferably, the cooling device comprises a second box body fixedly connected with the first box body, a water delivery pipe is fixedly connected to the side wall of the second box body, and an atomizing nozzle is fixedly connected to one end of the water delivery pipe.

Preferably, the side wall of the second box body is fixedly connected with a water pump, a water inlet of the water pump is communicated with the inside of the second box body, and a water outlet of the water pump is fixedly connected with one end of the water delivery pipe.

The utility model has the advantages that: the accelerometer can be tested in a low-pressure environment through the arranged testing device body; meanwhile, the temperature adjusting device is arranged, so that the environment that workers feel comfortable can be created, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of an accelerometer testing device under a low-pressure environment according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a temperature increasing device of an accelerometer testing device under a low-pressure environment according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a cooling device of an accelerometer testing device under a low-pressure environment according to an embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In order to facilitate understanding of the accelerometer testing device under the low-pressure environment provided by the embodiment of the present application, an application scenario of the accelerometer testing device under the low-pressure environment is first described; in order to test the accelerometer conveniently, the existing accelerometer testing device is generally placed in a workshop so as to test the accelerometer conveniently, but the testing efficiency of workers is affected when the ambient temperature in the workshop is too high or too low. The accelerometer testing device under a low air pressure environment provided by the embodiment of the application is described below with reference to the accompanying drawings.

The utility model provides an accelerometer testing arrangement under low atmospheric pressure environment, accelerometer testing arrangement includes testing arrangement body and temperature regulation apparatus under this low atmospheric pressure environment. When the accelerometer is used, the accelerometer can be tested in a low-pressure environment through the testing device body; meanwhile, when the temperature in the workshop is too high or too low, the ambient temperature around the working personnel can be adjusted through the temperature adjusting device, so that an environment which enables the working personnel to feel comfortable is created, and the working efficiency of the working personnel is prevented from being reduced.

Wherein, figure 1 can be referred to when the testing arrangement body specifically sets up, figure 1 is the utility model discloses accelerometer testing arrangement's under low atmospheric pressure environment structure sketch map under the embodiment provides. As can be seen from fig. 1, the testing device body includes a testing box 1, a testing chamber 2 is formed in the testing box 1, and the testing box 1 is hinged with a cover plate 3 for closing the testing chamber 2, so that the testing chamber 2 can be closed more tightly, and four sides of the cover plate 3 can be fixedly connected with sealing rings; continuing to refer to fig. 1, the test box 1 is fixedly connected with a connector 4 communicated with the test chamber 2, an exhaust tube 5, an air inlet tube 6 and a connecting tube 7, wherein the exhaust tube 5 and the air inlet tube 6 are both fixedly connected with an electromagnetic valve 9 for sealing the test box, and the connecting tube 7 is far away from one end of the test box 1 and is fixedly connected with a barometer 8. Use the utility model discloses when testing the accelerometer, rotatable apron 3, open test chamber 2, then put into test chamber 2 with the accelerometer, and be connected accelerometer and connector 4's one end electricity together, then be in the same place accelerometer tester and connector 4's other end electricity, thereby be in the same place accelerometer and accelerometer electricity connection, then counter-rotating apron 3, this test chamber 2 seals, then connect the aspiration pump with aspiration tube 5, and open solenoid valve 9 in aspiration tube 5, then start the aspiration pump, thereby take out the air in test chamber 2, and real-time observation barometer 8, atmospheric pressure in test chamber 2 falls to test atmospheric pressure, then test the accelerometer under low atmospheric pressure environment through the accelerometer tester.

The specific setting of the temperature regulation device can be seen with continued reference to fig. 1, and as can be seen from fig. 1, the temperature regulation device comprises a temperature increasing device 10 and a temperature decreasing device 17. When the temperature in the workshop is too low, the temperature rising device 10 can rise the temperature of the workers and the surrounding environment; when the temperature in the workshop is too high, the cooling device 17 can cool down the staff and the surrounding environment, thereby creating an environment which makes the staff feel comfortable and preventing the staff from reducing the working efficiency.

When the temperature rising device 10 is specifically set, reference may be made to fig. 2, and fig. 2 is a schematic structural diagram of the temperature rising device of the accelerometer testing device under the low-pressure environment according to an embodiment of the present invention. As shown in fig. 2, the temperature increasing device 10 includes a first box 11 fixedly connected to the test box 1, a heating wire 13 is fixedly connected to the first box 11, and a blowing device 12 is fixedly connected to an inner wall of the first box 11, the blowing device 12 includes, but is not limited to, a conventional blower in the prior art, and the like, and a plurality of air inlets 16 are opened on a side wall of the first box 11 where the blowing device 12 is disposed, and a dust screen 15 is fixedly connected to the inside of each air inlet 16; continuing to refer to fig. 2, the other sidewall of the first box 11 is fixedly connected with an air outlet pipe 14, the air outlet pipe 14 includes but is not limited to a snake-shaped air outlet pipe commonly used in the prior art, and the like, so as to conveniently adjust the position of the air outlet pipe 14, and the dust screen 15 is fixedly connected to the position of the air outlet in the air outlet pipe 14. The time of crossing low and using in the workshop the utility model discloses, the adjustable position that goes out the air outlet of tuber pipe 14 makes the air outlet of going out tuber pipe 14 aim at the staff, then switches on heating wire 13 and blast apparatus 12, and heating wire 13 heats the temperature in with first box 11, and blast apparatus 12 blows to a tuber pipe 14 with the air after heaing up, and the air after the intensification enters into out tuber pipe 14 and blows off to the staff to environment on every side heaies up staff and.

When the cooling device 17 is specifically set up, refer to fig. 3, fig. 3 is a schematic structural diagram of a cooling device of an accelerometer testing device under a low-pressure environment according to an embodiment of the present invention. As can be seen from fig. 3, the cooling device 17 includes a second box 18 fixedly connected to the first box 11, the second box 18 is filled with clean water, a water pump 21 is fixedly connected to a side wall of the second box 18, a water outlet of the water pump 21 is fixedly connected to a water pipe 19, the water pipe 19 includes, but is not limited to, a snake-shaped water pipe commonly used in the prior art, and the like, so as to conveniently adjust a position of the water outlet of the water pipe 19, and the water outlet of the water pipe 19 is fixedly connected to an atomizing nozzle 20. When the interior high temperature of workshop and use the utility model discloses the time, the position of adjustable raceway 19's delivery port, make atomizer 20 aim at the staff, then start water pump 21, water pump 21 goes into the water pump in the second box 18 to raceway 19 in, water in the raceway 19 is finally atomized for water smoke to staff and spout on every side through atomizer 20, because the interior high temperature of workshop, can evaporate behind the water smoke blowout, because water smoke evaporation heat absorption, thereby can cool down staff and environment on every side, thereby can build one and make the staff feel comfortable environment, prevent that the staff from reducing work efficiency because of temperature factor. In order to facilitate the replenishment of the second tank 18 with water, the second tank 18 may be fixedly connected with a water feed pipe so that water can be added into the second tank 18 through the water feed pipe.

All parts in the utility model are common parts in the prior art, and all the power-consuming parts in the utility model should be connected with a control switch for controlling the power-consuming parts; for the convenience to the power consumption part power supply in this application utility model, the power consumption part in this application utility model can be connected with external power source electricity.

In the above embodiment, the accelerometer testing device under the low-pressure environment provided by the embodiment of the application can test the accelerometer under the low-pressure environment, and meanwhile, an environment which makes workers feel comfortable can be created, so that the workers are prevented from reducing the working efficiency due to temperature factors.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. An accelerometer testing device under a low air pressure environment, comprising: the testing device comprises a testing device body and a temperature adjusting device;

2. The accelerometer testing device under the low-pressure environment of claim 1, wherein the electromagnetic valves for sealing the accelerometer testing device under the low-pressure environment are fixedly connected in the exhaust pipe and the air inlet pipe.

3. The device for testing the accelerometer under the low-pressure environment according to claim 1, wherein the temperature raising device comprises a first box body fixedly connected with the test box, a blowing device and an electric heating wire are fixedly connected in the first box body, an air outlet pipe is fixedly connected to a side wall of the first box body, and a dust screen is fixedly connected to one end of the air outlet pipe.

4. The device for testing the accelerometer under the low-pressure environment according to claim 3, wherein the blowing device is fixedly connected with an inner wall of the first box body, a plurality of air inlets are formed in the inner wall provided with the blowing device, and the dust screen is fixedly connected in each air inlet; and the side wall fixedly connected with the air outlet pipe is opposite to the inner wall provided with the blowing device.

5. The accelerometer testing device under the low-pressure environment as claimed in claim 4, wherein the cooling device comprises a second box body fixedly connected with the first box body, a water pipe is fixedly connected to a side wall of the second box body, and an atomizing nozzle is fixedly connected to one end of the water pipe.

6. The accelerometer testing device under the low-pressure environment of claim 5, wherein a water pump is fixedly connected to the side wall of the second box body, a water inlet of the water pump is communicated with the inside of the second box body, and a water outlet of the water pump is fixedly connected with one end of the water conveying pipe.