阅读说明：本技术 一种温差压差试验箱 (Temperature difference and pressure difference test box ) 是由 任春杰 陈青山 石文星 胡金波 牛涛 于 2019-09-12 设计创作，主要内容包括：一种温差压差试验箱,用于向测试件的内外部提供温度差和压力差的试验环境,包括高低温试验箱,在高低温试验箱的侧壁上设置有与高低温试验箱内测试件连通的充气管,所述充气管通过供气电磁阀与储气瓶连接,在充气管上设置有用于检测充气管内测试气体温度的温度传感器,所述温度传感器、供气电磁阀分别与数据采集及控制系统连接。本发明在高低温试验箱上设置充气管与测试件连通,并在充气管上设置用来检测、控制的元件,并通过数据采集及控制系统进行数据采集及控制,实现对测试件内外气温差、气压差的控制。本发明具有操作简单、控制精度高的特点,填补了对测试件内外气温差、气压差相关测试方面上设备的空白。(The utility model provides a temperature difference pressure difference test box for the inside and outside test environment who provides temperature difference and pressure difference to the test piece, including high low temperature test box, be provided with on the lateral wall of high low temperature test box with the gas tube of high low temperature test box internal test piece intercommunication, the gas tube passes through the air feed solenoid valve and is connected with the gas bomb, is provided with the temperature sensor who is used for detecting the interior test gas temperature of gas tube on the gas tube, temperature sensor, air feed solenoid valve are connected with data acquisition and control system respectively. The invention sets up the gas tube on the high low temperature test box to connect with the test piece, and sets up the component used for detecting, controlling on the gas tube, and carry on data acquisition and control through the data acquisition and control system, realize the control to the inside and outside air temperature difference of the test piece, air pressure difference. The invention has the characteristics of simple operation and high control precision, and fills the blank of equipment in the relevant test aspects of the temperature difference and the air pressure difference between the inside and the outside of the test piece.)

1. The utility model provides a temperature difference pressure differential test case for provide the test environment of temperature difference and pressure differential to the inside and outside of test piece (2), includes high low temperature test case (1), characterized by: be provided with on high low temperature test box (1) gas tube (3) with the inside intercommunication of high low temperature test box (1) internal test piece (2), gas tube (3) are connected with gas bomb (5) through air feed solenoid valve (4), are provided with temperature sensor (6) that are used for detecting the interior test gas temperature of gas tube on gas tube (3), temperature sensor (6), air feed solenoid valve (4) are connected with data acquisition and control system (7) respectively.

2. The differential temperature pressure test chamber as claimed in claim 1, wherein: and the outer pipe wall of the inflation pipe (3) is provided with a heat insulation material.

3. The differential temperature pressure test chamber as claimed in claim 1, wherein: a control hand valve is connected between the gas storage bottle (5) and the gas supply electromagnetic valve (4).

4. The differential temperature pressure test chamber as claimed in claim 1, wherein: the gas storage bottle (5) is connected with an external constant pressure gas source through a gas filter (8).

5. The differential temperature pressure test chamber as claimed in claim 4, wherein: a control hand valve is connected between the gas storage bottle (5) and the gas filter (8).

6. The differential temperature pressure test chamber as claimed in claim 5, wherein: an air source device box is arranged on the outer wall of the high-low temperature test box (1), and the air supply electromagnetic valve (4), the air storage bottle (5) and the control hand valve are arranged in the air source device box.

Technical Field

The invention relates to the technical field of test equipment, in particular to a temperature and pressure difference test box.

Background

At present, the test requirements for some key test pieces are higher and higher, and the influence of the temperature difference between the internal air and the external air on the performance of the test piece is tested, and the influence of the pressure difference between the internal air and the external air on the performance of the test piece is also tested. The common high-low temperature test box can only carry out high-low temperature test on a test piece, can not test the temperature difference and the air pressure difference between the inside and the outside of the test piece, and can not acquire and control test data.

The high-low temperature test system is widely applied at home and abroad, and military units such as aviation, aerospace, weapons and the like, and all scientific research institutes, enterprises and universities need to verify the high-low temperature adaptability of the product by means of the high-low temperature test system. However, for the equipment capable of realizing the testing of the internal and external air temperature difference and the air pressure difference, relevant data are not available at home and abroad for reference.

Therefore, a test device capable of controlling the difference between the internal and external air temperatures and the air pressure difference of the test piece is needed to meet the test requirements of the test piece.

Disclosure of Invention

In order to overcome the defects in the background art, the invention discloses a temperature and pressure difference test box, which aims to: the test equipment capable of realizing control of the temperature difference and the air pressure difference between the inside and the outside is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a temperature difference pressure difference test box for the inside and outside test environment who provides temperature difference and pressure difference to the test piece, including high low temperature test box, be provided with on high low temperature test box with the inside gas tube that communicates of high low temperature test box internal test piece, the gas tube passes through the air feed solenoid valve and is connected with the gas bomb, is provided with the temperature sensor who is used for detecting the interior test gas temperature of gas tube on the gas tube, temperature sensor, air feed solenoid valve are connected with data acquisition and control system respectively.

In order to further improve the technical scheme, the outer pipe wall of the inflation pipe is provided with a heat insulation material.

In order to further improve the technical scheme, a control hand valve is connected between the gas storage cylinder and the gas supply electromagnetic valve.

In order to further improve the technical scheme, the gas storage cylinder is connected with an external constant-pressure gas source through a gas filter.

In order to further improve the technical scheme, a control hand valve is connected between the gas storage cylinder and the gas filter.

In order to further improve the technical scheme, an air source device box is arranged on the outer wall of the high-low temperature test box, and the air supply electromagnetic valve, the air storage bottle and the control hand valve are arranged in the air source device box.

Due to the adoption of the technical scheme, compared with the background technology, the invention has the following beneficial effects:

the invention sets up the gas tube on the high low temperature test box to connect with the test piece, and sets up the component used for detecting, controlling on the gas tube, and carry on data acquisition and control through the data acquisition and control system, realize the control to the inside and outside air temperature difference of the test piece, air pressure difference.

The invention has the characteristics of simple operation and high control precision, and fills the blank of equipment in the relevant test aspects of the temperature difference and the air pressure difference between the inside and the outside of the test piece.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of another view angle in fig. 1.

Fig. 3 is a schematic view showing the connection of the components in the present invention.

In the figure: 1. a high and low temperature test chamber; 2. testing the piece; 3. an inflation tube; 4. an air supply solenoid valve; 5. a gas cylinder; 6. a temperature sensor; 7. a data acquisition and control system; 8. and a gas filter.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

A temperature difference and pressure difference test chamber for providing a test environment of temperature difference and pressure difference to the inside and outside of a test piece 2, as shown in figures 1-3, comprises a high-low temperature test chamber 1, and a test piece 2 is placed on a support in the high-low temperature test chamber 1. Be provided with on the lateral wall of high low temperature test box 1 with the gas tube 3 of the inside intercommunication of high low temperature test box 1 internal test piece 2, gas tube 3 is connected with gas bomb 5 through air feed solenoid valve 4, is provided with the temperature sensor 6 that is used for detecting the interior test gas temperature of gas tube on gas tube 3, temperature sensor 6, air feed solenoid valve 4 are connected with data acquisition and control system 7 respectively.

The gas storage bottle 5 is controlled by the gas supply electromagnetic valve 4 to introduce test gas with certain temperature and pressure into the test piece 2 through the gas filling pipe 3, and the high-low temperature test box 1 provides external temperature under normal pressure for the test piece 2, so that pressure difference and temperature difference are generated inside and outside the test piece 2. The temperature difference between the inside and the outside of the test piece 2 can be adjusted by adjusting the temperature in the high-low temperature test box 1.

In order to avoid the influence of the temperature in the high-low temperature test box 1 on the temperature of the gas in the gas tube 3, the outer tube wall of the gas tube 3 is provided with a heat insulation material.

For safety and convenience for an operator to intervene in the testing process, a control hand valve is connected between the gas storage cylinder 5 and the gas supply electromagnetic valve 4, and a control hand valve is connected between the gas storage cylinder 5 and the gas filter 8.

In order to supplement the loss of gas in the gas storage bottle 5 and ensure the constant gas pressure in the gas storage bottle 5, the gas storage bottle 5 is connected with an external constant pressure gas source, and a gas filter 8 is connected between the gas storage bottle 5 and the external constant pressure gas source and used for filtering and purifying gas. The pressure difference generated inside and outside the test piece 2 can be adjusted by changing the pressure of the external constant pressure air source.

In order to facilitate safe maintenance, an air source device box is arranged on the outer wall of the high-low temperature test box 1, an isolation door is arranged on the air source device box, and an air supply electromagnetic valve 4, an air storage bottle 5 and a control hand valve are arranged in the air source device box.

The invention sets up the gas tube 3 on the high low temperature test box 1 to communicate with test piece 2, and set up the component used for detecting, controlling on the gas tube 3, and carry on data acquisition and control through the data acquisition and control system 7, realize the control to the inside and outside air temperature difference of the test piece 2, air pressure difference.

The invention has the characteristics of simple operation and high control precision, and fills the blank of equipment in the relevant test aspects of the temperature difference and the air pressure difference between the inside and the outside of the test piece 2.

The present invention is not described in detail in the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.