CN114383797A - A temperature, humidity, high, vibration four comprehensive environmental sealing system - Google Patents

Abstract

The invention discloses a temperature, humidity, height and vibration integrated environment sealing system which comprises an environment test box capable of testing temperature, humidity and height, wherein a test box bottom plate is arranged below the environment test box, a mounting hole is formed in the middle of the test box bottom plate, a four integrated environment sealing structure penetrates through the mounting hole of the test box bottom plate, and the four integrated environment sealing structure comprises a transition head heat insulation plate, a transition head, a rolling film pressing plate heat insulation plate, a rolling film pressing plate, a rolling film mounting plate, a metal corrugated pipe, a static sealing ring, a U-shaped rolling film I and a table top screw; the bottom end of the comprehensive environment sealing structure is provided with a vibrating table, the middle part of the vibrating table is a moving part of the vibrating table, the side wall of the vibrating table is provided with an upper cover plate of the vibrating table, and a U-shaped rolling film II is arranged between the upper part of the upper cover plate of the vibrating table and the transition head. The invention can prevent the temperature of the temperature, humidity and high environment test box from being transmitted to the transition device and further transmitted to the vibration table, thereby effectively protecting the vibration table from being influenced by the temperature and improving the working reliability of the vibration table.

Description

A temperature, humidity, high and vibration comprehensive environmental sealing system

technical field

The invention relates to the field of vibration tables, in particular to a temperature, humidity, high and vibration comprehensive environmental sealing system.

Background technique

The comprehensive environmental test is developed on the basis of a single environmental test. It combines two or more single environmental factors and applies them to the product at the same time to simulate the stress that the product actually experiences during transportation, storage and use. Verify the MTBF level of the product. It can not only simulate the actual environment of the product more realistically than a single environmental test, but also expose many defects that are not easy to be exposed under the action of a single factor, and find faults caused by defects in product structure and process as soon as possible to ensure that the product is in use. reliability.

The comprehensive environmental test of temperature, humidity, low pressure and vibration is the main environmental factors experienced in the use of aviation, aerospace, high-altitude weapons, high-speed railways operating on the plateau, etc. The comprehensive environmental test system can be used to determine the temperature, humidity, altitude and vibration Combined effects on the safety, integrity and performance of onboard electronic equipment and airborne equipment on the ground and during flight operations, and are used to evaluate possible failures that may be caused by the combined effects of temperature, humidity, altitude, and vibration in air or high-altitude areas .

In the aerospace field, spacecraft are subjected to changes in vibration, temperature and altitude during the launch phase, and a composite environment of heat and vacuum during the orbital phase. More and more people suggest that the temperature, humidity, altitude and vibration composite environment test It is used in spacecraft electronic equipment, and it is believed that this can achieve reliability growth and improve the reliability of spacecraft; in the field of military equipment, with the continuous expansion of the use area of weapons and equipment, the battlefield environment is more and more complex, and the military and various equipment are contracted. Units pay more and more attention to the comprehensive environment of actual combat weapons and equipment, so as to clarify the combat environment and the maximum possible failures of weapons and equipment, and maximize the environmental adaptability of weapons and equipment through improvement; With the development in the direction of high altitude and long travel time, aviation equipment has higher and higher requirements for environmental adaptability. Therefore, those skilled in the art provide a comprehensive environmental sealing system of temperature, humidity, high temperature and vibration to solve the problems raised in the above background art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a comprehensive environmental sealing system of temperature, humidity, high temperature and vibration, so as to solve the problems raised in the above-mentioned background art.

To achieve the above object, the present invention provides the following technical solutions:

A temperature, humidity, high and vibration comprehensive environmental sealing system includes an environmental test chamber capable of testing temperature, humidity and height, a bottom plate of the test chamber is arranged under the environmental test chamber, and a mounting hole is opened in the middle of the bottom plate of the test chamber, And the installation holes of the bottom plate of the test box are provided with four comprehensive environmental sealing structures, which include transition head heat insulation board, transition head, rolling film pressure plate heat insulation board, rolling film pressure plate, rolling film mounting plate, metal corrugated Pipe, static sealing ring, U-shaped rolling film one and table screw; the transition head heat insulation plate is arranged above the transition head, the rolling film pressing plate heat insulation board is set on the outer wall of the transition head, and the rolling film pressing plate is set on the rolling film pressing plate heat insulation board Below the plate, the rolling film mounting plate is installed above the bottom plate of the test box, the U-shaped rolling film is set between the transition head, the rolling film pressing plate and the rolling film mounting plate, the metal bellows is set under the bottom plate of the test box, and the four comprehensive environmental sealing The bottom end of the structure is provided with a vibrating table, the middle of the vibrating table is the moving part of the vibrating table, the upper cover plate of the vibrating table is arranged on the side wall of the vibrating table, and a U-shaped rolling film 2 is arranged between the upper cover plate of the vibrating table and the moving parts of the vibrating table. .

As a further solution of the present invention: the U-shaped rolling film one is connected with the transition head and the rolling film mounting plate by pressing, and the opposite side walls of the transition head and the rolling film mounting plate are provided with sealing grooves, and the U-shaped One end of the rolling film one is installed in the sealing groove of the transition head, and the other end is installed in the sealing groove of the rolling film mounting plate, and the U-shaped arm of the U-shaped rolling film one is located between the transition head and the rolling film pressing plate.

As a further solution of the present invention: the upper end of the metal bellows has an upper flange, the lower end of the metal bellows has a lower flange, the upper flange of the metal bellows and the rolling film mounting plate are connected by screws, and the lower flange of the metal bellows It is connected with the upper cover of the vibrating table by screws.

As a further scheme of the present invention: a table screw is provided between the transition head heat insulation board and the transition head, the transition head heat insulation board and the transition head are connected by a table screw, and the rolling film pressure plate heat insulation board and the transition head are connected by screws, The thermal insulation board of the rolling film pressing plate is connected with the rolling film pressing plate by screws, and the rolling film mounting plate and the bottom plate of the test box are connected by screws.

As a further scheme of the present invention: the transition head is connected with the top of the moving part of the vibration table by screws, and the two ends of the U-shaped rolling film are clamped between the upper cover plate of the vibration table and the pressing block above the upper cover plate of the vibration table, U The other end of the two-shaped rolling film is arranged in a groove on one side of the U-shaped rolling film two on the moving part of the vibrating table.

As a further solution of the present invention, there is a movable gap between the four integrated environmental sealing structures and the installation holes of the bottom plate of the test box.

As a further solution of the present invention, there is a movable gap of 2-5mm between the four integrated environmental sealing structures and the installation holes of the bottom plate of the test box.

As a further solution of the present invention, the first U-shaped rolling film and the second U-shaped rolling film are made of rubber.

As a further scheme of the present invention: a static sealing ring is arranged between the upper flange of the metal bellows and the bottom plate of the test chamber, and a static sealing ring is arranged between the lower flange of the metal bellows and the upper cover plate of the vibrating table, A static sealing ring is arranged between the bottom plate of the test box and the rolling film mounting plate.

As a further solution of the present invention: the static sealing ring is an O-shaped sealing ring.

The four comprehensive environmental sealing system of temperature, humidity, altitude and vibration mentioned in the present invention refers to a sealing system applied to four comprehensive environmental tests of temperature, humidity, altitude and vibration.

Compared with the prior art, the beneficial effects of the present invention are:

1. The heat insulation plate of the transition head of the present invention is located above the transition head, which can prevent the temperature of the temperature, humidity and high environment test chamber from being transmitted to the transition device and then transferred to the vibrating table, thereby effectively protecting the vibrating table from being affected by temperature and improving the work of the vibrating table. reliability.

2. One end of the U-shaped rolling film in the present invention is connected with the rolling film mounting plate, and the other end is connected with the transition head, so that the internal pressure leakage of the environmental test chamber can be prevented during the vibration of the transition head, and the U-shaped rolling film one passes through the transition head. , Rolling film mounting plate and rolling film pressure plate fixed.

3. In the present invention, the static sealing ring is located between the bottom plate of the test box and the rolling film mounting plate, between the bottom plate of the test box and the upper flange of the metal bellows, and between the lower flange of the metal bellows and the upper cover of the vibrating table. A pair of environmental test chambers are double-sealed by the sealing ring and the U-shaped rolling film, which effectively prevents the pressure leakage of the environmental test chamber.

Description of drawings

Figure 1 is an outline view of the present invention.

Figure 2 is a cross-sectional view of the present invention.

Fig. 3 is the enlarged schematic diagram of A place in Fig. 2;

Fig. 4 is the enlarged schematic diagram at B in Fig. 2;

FIG. 5 is an enlarged schematic view of C in FIG. 2 .

In the figure: 1. Environmental test chamber; 1-1. Bottom plate of the test chamber; 2. Four comprehensive environmental sealing structures; 2-1. Transition head heat shield; 2-2, Transition head; Hot plate; 2-4, rolling film pressure plate; 2-5, rolling film mounting plate; 2-6, metal bellows; 2-7, static sealing ring; 2-8, U-shaped rolling film one; 2-9, Table screws; 3. Vibrating table; 3-1. Moving parts of the shaking table; 3-2. Upper cover plate of the shaking table; 3-3U type rolling film II.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIGS. 1 to 5. In the embodiment of the present invention, a comprehensive environmental sealing system for temperature, humidity, high temperature and vibration includes an environmental test box 1 capable of testing temperature, humidity and altitude. Below the environmental test box 1, a The bottom plate 1-1 of the test box is provided with a mounting hole in the middle of the bottom plate 1-1 of the test box, and four integrated environmental sealing structures 2 are pierced through the mounting holes of the bottom plate 1-1 of the test box. Hot plate 2-1, transition head 2-2, rolling film pressing plate heat shield 2-3, rolling film pressing plate 2-4, rolling film mounting plate 2-5, metal bellows 2-6, static sealing ring 2-7 , U-shaped rolling film one 2-8 and table screw 2-9; above the transition head 2-2 is provided with a transition head heat insulation plate 2-1, and the rolling film pressure plate heat insulation plate 2-3 is arranged on the transition head 2-2. On the outer wall, the rolling film pressing plate 2-4 is arranged below the insulating plate 2-3 of the rolling film pressing plate, the rolling film mounting plate 2-5 is installed above the bottom plate 1-1 of the test box, and the U-shaped rolling film 1 2-8 is arranged on the bottom of the test box. Between the transition head 2-2, the rolling film pressing plate 2-4 and the rolling film mounting plate 2-5, the metal bellows 2-6 is arranged under the bottom plate 1-1 of the test box, and the bottom end of the four comprehensive environmental sealing structure 2 is provided with vibration Table 3, the middle of the vibration table 3 is the moving part 3-1 of the shaking table, the side wall of the shaking table 3 is provided with the upper cover plate 3-2 of the shaking table, the upper part of the upper cover plate 3-2 of the shaking table and the moving part 3-1 of the shaking table are arranged on the side wall of the shaking table 3. A U-shaped rolling film II 3-3 is arranged between them.

Among them, the U-shaped rolling film 1 2-8 is connected with the transition head 2-2 and the rolling film mounting plate 2-5 by pressing, and the opposite side walls of the transition head 2-2 and the rolling film mounting plate 2-5 are There is a sealing groove, one end of the U-shaped rolling film 2-8 is installed in the sealing groove of the transition head 2-2, and the other end is installed in the sealing groove of the rolling film mounting plate 2-5. A 2-8 U-shaped arm is located between the transition head 2-2 and the roller platen 2-4.

Among them, the upper end of the metal bellows 2-6 has an upper flange, the lower end of the metal bellows 2-6 has a lower flange, the upper flange of the metal bellows 2-6 is connected with the rolling film mounting plate 2-5 by screws, and the metal bellows The lower flange of the tube 2-6 is connected with the upper cover plate 3-2 of the vibrating table by screws.

Among them, a table screw 2-9 is arranged between the transition head heat insulation plate 2-1 and the transition head 2-2, and the transition head heat insulation plate 2-1 and the transition head 2-2 are connected by the table screw 2-9, and the rolling film The pressure plate heat insulation plate 2-3 is connected with the transition head 2-2 by screws, the rolling film pressure plate heat insulation plate 2-3 is connected with the rolling film pressure plate 2-4 by screws, and the rolling film installation plate 2-5 is connected with the bottom plate of the test box 1- 1 Connected by screws.

By using screws for fixing, the installation and removal operations of the four-integrated environmental sealing structure 2 can be facilitated.

Among them, the transition head 2-2 is connected with the top of the moving part 3-1 of the vibrating table by screws, and one end of the U-shaped rolling film 2 3-3 is clamped on the upper cover plate 3-2 of the vibrating table and the upper cover plate 3-2 of the vibrating table. Between the pressing blocks, the other end of the second U-shaped rolling film 3-3 is arranged in the groove on the side of the second U-shaped rolling film 3-3 on the moving part 3-1 of the vibration table.

The transition head 2-2 is connected with the moving part 3-1 of the vibrating table by screws, which is convenient for the installation and disassembly of the transition head 2-2, the vibrating table 3 and the heat insulating plate 2-1 of the transition head; U-shaped rolling film II 3-3 is adopted The internal space pressure of the vibration table 3 is isolated from the space pressure between the metal bellows 2-6 and the transition head 2-2 to prevent the two space pressures from communicating.

Among them, there is a movable gap between the four comprehensive environmental sealing structures 2 and the installation holes of the bottom plate 1-1 of the test box.

Among them, there is a movable gap of 2-5mm between the four integrated environmental sealing structures 2 and the installation holes of the bottom plate 1-1 of the test box.

Among them, the U-shaped rolling film 1 2-8 and the U-shaped rolling film 2 3-3 are made of rubber.

Among them, a static sealing ring 2-7 is arranged between the upper flange of the metal bellows 2-6 and the bottom plate 1-1 of the test box, and the lower flange of the metal bellows 2-6 is located on the upper cover plate 3-2 of the vibration table. A static sealing ring 2-7 is arranged therebetween, and a static sealing ring 2-7 is arranged between the bottom plate 1-1 of the test box and the rolling film mounting plate 2-5.

Among them, the static sealing rings 2-7 are O-shaped sealing rings.

The static sealing ring 2-7 isolates the internal space of the environmental test box 1 from the space pressure between the metal bellows 2-6 and the transition head 2-2, preventing the pressure of the two spaces from communicating. The pressure of the test chamber plays the role of secondary sealing, which effectively prevents the pressure leakage of the environmental pressure chamber.

The working principle of the present invention is as follows: when installing the sealing structure, firstly, the lower flange of the metal bellows 2-6 and the upper cover plate 3-2 of the vibration table are fastened with screws, and static electricity is used between the two. The sealing ring 2-7 is used for sealing; the upper flange of the metal bellows 2-6 and the bottom plate 1-1 of the test chamber are fastened with screws, and the static sealing ring 2-7 is used for sealing between the two. After the pipe 2-6 is installed, install the transition head 2-2, pass the transition head 2-2 through the installation hole 1-1 of the bottom plate of the test box, and place it above the moving parts of the vibration table 3, and ensure that the transition head 2-2 and the vibration The moving parts of the table 3 are coaxial, and the transition head 2-2 and the moving parts of the vibration table 3 are fastened with screws. Place the rolling film mounting plate 2-5 above the bottom plate 1-1 of the test box, and it is coaxial with the mounting hole of the bottom plate 1-1 of the test box, and fasten the rolling film mounting plate 2-5 and the bottom plate 1-1 of the test box with screws , between the rolling film mounting plate 2-5 and the bottom plate 1-1 of the test box, use the static sealing ring 2-7 to seal; then install one end of the U-shaped rolling film 2-8 to the sealing groove of the transition head 2-2 , the other end is installed into the sealing groove of the rolling film mounting plate 2-5, and then the rolling film pressing plate 2-4 is placed above the rolling film mounting plate 2-5 to ensure that the rolling film mounting plate 2-5 and the rolling film pressing plate 2 In addition to the -4 coaxial, it is also necessary to ensure that the U-shaped rolling film-2-8 is located between the transition head 2-2 and the rolling film pressing plate 2-4. The U-shaped rolling film 1 2-8 and the static sealing ring 2-7 between the rolling film mounting plate 2-5 and the environmental test chamber 1 connect the inner space of the environmental test chamber with the metal bellows 2-6 and the transition head 2-2 The space pressure between them is isolated to prevent the two space pressures from communicating. Here, the metal bellows 2-6 play the role of secondary sealing to the pressure of the environmental test chamber 1, effectively preventing the pressure leakage of the environmental test chamber. In order to facilitate the installation of the test specimen, the table screw 2-9 is installed on the transition head 2-2, and the transition head heat insulation plate 2-1 is located above the transition head 2-2, which can prevent the temperature of the environmental test chamber 1 from being transmitted to the four comprehensive environments. The sealing structure 2 is further transmitted to the vibrating table 3 , thereby effectively protecting the vibrating table 3 from being affected by temperature and improving the working reliability of the vibrating table 3 .

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (10)

1. The utility model provides a temperature, wet, high, four integrated environment sealing systems that shake, including environmental test case (1) that can test temperature, humidity and height, its characterized in that: a test box bottom plate (1-1) is arranged below the environment test box (1), a mounting hole is formed in the middle of the test box bottom plate (1-1), a four-comprehensive-environment sealing structure (2) penetrates through the mounting hole of the test box bottom plate (1-1), and the four-comprehensive-environment sealing structure (2) comprises a transition head heat insulation plate (2-1), a transition head (2-2), a rolling film pressing plate heat insulation plate (2-3), a rolling film pressing plate (2-4), a rolling film mounting plate (2-5), a metal corrugated pipe (2-6), a static sealing ring (2-7), a U-shaped rolling film I (2-8) and a table top screw (2-9); a transition head heat insulation plate (2-1) is arranged above the transition head (2-2), a film rolling pressure plate heat insulation plate (2-3) is arranged on the outer wall of the transition head (2-2), a film rolling pressure plate (2-4) is arranged below the film rolling pressure plate heat insulation plate (2-3), a film rolling mounting plate (2-5) is arranged above a test box bottom plate (1-1), a U-shaped film rolling I (2-8) is arranged between the transition head (2-2), the film rolling pressure plate (2-4) and the film rolling mounting plate (2-5), a metal corrugated pipe (2-6) is arranged below the test box bottom plate (1-1), a vibration table (3) is arranged at the bottom end of the four comprehensive environment sealing structure (2), a vibration table moving part (3-1) is arranged in the middle of the vibration table (3), a vibration table upper cover plate (3-2) is arranged on the side wall of the vibration table (3), a U-shaped rolling film II (3-3) is arranged between the upper part of the upper cover plate (3-2) of the vibration table and the motion part (3-1) of the vibration table.

2. The system of claim 1, wherein the system comprises a warm, wet, high, and vibratory combined environment sealing system, and is characterized in that: the U-shaped rolling film I (2-8) is connected with the transition head (2-2) and the rolling film mounting plate (2-5) in a clamping and pressing mode, sealing grooves are formed in the opposite side walls of the transition head (2-2) and the rolling film mounting plate (2-5), one end of the U-shaped rolling film I (2-8) is installed in the sealing groove of the transition head (2-2), the other end of the U-shaped rolling film I is installed in the sealing groove of the rolling film mounting plate (2-5), and a U-shaped arm of the U-shaped rolling film I (2-8) is located between the transition head (2-2) and the rolling film mounting plate (2-4).

3. The system of claim 1, wherein the system comprises a warm, wet, high, and vibratory combined environment sealing system, and is characterized in that: the upper end of the metal corrugated pipe (2-6) is provided with an upper flange, the lower end of the metal corrugated pipe (2-6) is provided with a lower flange, the upper flange of the metal corrugated pipe (2-6) is connected with the rolling film mounting plate (2-5) through screws, and the lower flange of the metal corrugated pipe (2-6) is connected with the upper cover plate (3-2) of the vibration table through screws.

4. The system of claim 1, wherein the system comprises a warm, wet, high, and vibratory combined environment sealing system, and is characterized in that: a table-board screw (2-9) is arranged between the transition head heat-insulating board (2-1) and the transition head (2-2), the transition head heat-insulating board (2-1) is connected with the transition head (2-2) through the table-board screw (2-9), the film rolling pressing board heat-insulating board (2-3) is connected with the transition head (2-2) through a screw, the film rolling pressing board heat-insulating board (2-3) is connected with the film rolling pressing board (2-4) through a screw, and the film rolling mounting board (2-5) is connected with a test box bottom board (1-1) through a screw.

5. The system of claim 1, wherein the system comprises a warm, wet, high, and vibratory combined environment sealing system, and is characterized in that: the transition head (2-2) is connected with the top of the vibrating table moving part (3-1) through a screw, one end of the U-shaped rolling film II (3-3) is clamped between the vibrating table upper cover plate (3-2) and a pressing block above the vibrating table upper cover plate (3-2), and the other end of the U-shaped rolling film II (3-3) is arranged in a groove which is positioned on the vibrating table moving part (3-1) and is positioned on one side of the U-shaped rolling film II (3-3).

6. The system of claim 1, wherein the system comprises a warm, wet, high, and vibratory combined environment sealing system, and is characterized in that: a movable gap is formed between the four comprehensive environment sealing structures (2) and the mounting hole of the test box bottom plate (1-1).

7. The system of claim 6, wherein the system comprises: a movable gap of 2-5mm is formed between the four comprehensive environment sealing structures (2) and the mounting hole of the test box bottom plate (1-1).

8. The system of claim 1, wherein the system comprises a warm, wet, high, and vibratory combined environment sealing system, and is characterized in that: the U-shaped rolling film I (2-8) and the U-shaped rolling film II (3-3) are both made of rubber.

9. The system of claim 1, wherein the system comprises a warm, wet, high, and vibratory combined environment sealing system, and is characterized in that: a static sealing ring (2-7) is arranged between an upper flange of the metal corrugated pipe (2-6) and a test box bottom plate (1-1), a static sealing ring (2-7) is arranged between a lower flange of the metal corrugated pipe (2-6) and an upper cover plate (3-2) positioned on the vibrating table, and a static sealing ring (2-7) is arranged between the test box bottom plate (1-1) and a rolling film mounting plate (2-5).

10. The system of claim 1, wherein the system comprises a warm, wet, high, and vibratory combined environment sealing system, and is characterized in that: the static sealing rings (2-7) are O-shaped sealing rings.

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