CN214346518U

CN214346518U - High-low temperature low-pressure test box

Info

Publication number: CN214346518U
Application number: CN202023306914.0U
Authority: CN
Inventors: 梁旺儒; 潘显臻
Original assignee: Dongguan Haiboneng Environmental Test Equipment Co ltd
Current assignee: Dongguan Haiboneng Environmental Test Equipment Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-08
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to a security test that is used for various connectors, cable, little special motor etc. under high temperature low temperature condition, temperature-low pressure condition provides reliability test, product screening high low temperature low pressure test case. The high-low temperature low-pressure test box comprises a case, a temperature adjusting device and a pressure adjusting device, wherein the case is provided with a test room, a refrigerating room, an evaporation room, a pressure adjusting room, a central controller and a sliding door, the temperature adjusting device comprises a refrigerating device, a heating wire and a blowing device, and an observation window is arranged on the sliding door. An object of the utility model is to provide a high low temperature low pressure test box, this proof box set has rising temperature device, refrigerating plant, regulator simultaneously, makes it can accomplish high temperature low pressure simulation environmental test purpose in single proof box to be equipped with the space design of a plurality of erection equipment alone such as refrigeration room, evaporating chamber, surge-chamber, make the high low temperature low pressure test box that can manage alone each equipment.

Description

High-low temperature low-pressure test box

Technical Field

The utility model relates to a security test that is used for various connectors, cable, little special motor etc. under high temperature low temperature condition, temperature-low pressure condition provides reliability test, product screening high low temperature low pressure test case.

Background

The equipment used for various connectors, cables, micro and special motors and the like of aircrafts such as airplanes and the like is used in high altitude in high temperature and low temperature sudden change and low pressure environment, so that the equipment normally used in normal environment is difficult to normally use in high altitude environment, therefore, the equipment produced and developed for use on airplanes needs to be subjected to high temperature, low temperature and low pressure detection for the reliability, and the common detection is to carry out reliability test on the equipment in turn through a low temperature test box, a low temperature and low pressure test box and a high temperature test box respectively, so that the detection process is complicated, and the detection of the equipment in large batch is not facilitated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide high low temperature low pressure test chamber, this high low temperature low pressure test chamber is gathered simultaneously has rising temperature device, refrigerating plant, regulator, makes it can accomplish the purpose of high temperature low pressure simulation environmental test in single proof box to be equipped with the design in the space of a plurality of erection equipment alone such as refrigeration room 3, evaporating chamber 4, surge-chamber 5 on quick-witted case 1, make the high low temperature low pressure test chamber that can manage each equipment alone.

High low temperature low pressure test box, its characterized in that comprises quick-witted case 1, attemperator, pressure regulating device, quick-witted case 1 is equipped with laboratory 2, refrigeration room 3, evaporating chamber 4, surge-chamber 5, central controller 6, push-and-pull door 7, temperature sensing probe, pressure sensing element, manipulator 11, mounting disc 12, test piece frame 13 are installed to laboratory 2, temperature sensing probe and pressure sensing element all with central controller 6 signal connection, test piece frame 13 is installed on mounting disc 12, mounting disc 12 is installed on the lateral wall of laboratory 2. The high-low temperature low-pressure test box is simultaneously integrated with a heating device, a refrigerating device and a pressure regulating device, so that the purpose of high-temperature low-pressure simulation environment test can be completed in a single test box. The testing room 2 is used for placing and fixing equipment to be detected and is generally in a box shape; the refrigerating chamber 3 is used for placing refrigerating devices such as a compressor, a condenser and the like; the evaporation chamber 4 is provided with an evaporator 43 which is commonly used in the refrigeration process, a heating wire 41 for raising the temperature and a blowing device 42 which can smoothly blow air which is evaporated from the evaporator 43 and has the temperature changed by a refrigeration device or the heating wire 41 into the test chamber 2; the pressure regulating chamber 5 is provided with a pressure regulating device. The manipulator 11 is used for placing equipment with smaller volume at a hollow position in the laboratory 2, so that the actual operation environment can be simulated more truly; the test piece rack 13 on the mounting disc 12 is used for fixedly mounting equipment with larger volume; the specimen holder 13 is mounted with a socket for supplying power to the subject to be tested.

The temperature adjusting device is composed of a refrigerating device, a heating wire 41 and a blowing device 42, the refrigerating device comprises an evaporator 43, the blowing device 42, the heating wire 41 and the evaporator 43 are sequentially distributed and fixedly installed in an evaporation chamber 4, an air outlet is formed between the evaporation chamber 4 and the test chamber 2, and the air outlet is adjacent to the evaporator 43. The refrigerating device is composed of a compressor, a condenser, an evaporator 43 and an expansion valve, wherein the compressor and the condenser are both arranged in the refrigerating chamber 3. The blowing device 42 is composed of a circulating motor, a magnetic fluid and a wind wheel.

The sliding door 7 is hinged to the side face of the case 1, and an observation window 71 is arranged on the sliding door 7.

The pressure regulating device consists of a pressure pumping device and a pressure boosting device, wherein the pressure pumping device comprises a vacuum pump and is used for pumping away air in the test room 2 so as to achieve the effect of reducing the air pressure; the supercharging device can supplement air pressure in time after the laboratory 2 finishes the low-pressure test.

The laboratory 2 is communicated with the evaporation chamber 4, a plurality of pipelines communicated with other devices are arranged on the evaporation chamber 4, and valves matched with the pipelines are arranged on the pipelines.

And the side walls of the test room 2 are all provided with reinforcing pressure bearing plates. The reinforcing bearing plate consists of a transverse bearing plate and a vertical bearing plate, and the transverse bearing plate and the vertical bearing plate are fixedly arranged on the side wall of the test room 2 in a fence structure shape, so that a firm bearing structure can be provided to prevent the test room 2 from being crushed under a low-pressure environment.

And an electric heating defrosting device is arranged on the door frame of the sliding door 7. The electric heating defrosting device avoids the condition that the sliding door 7 is difficult to open due to the frosting phenomenon after the test of the laboratory 2 in the low-temperature environment is finished, wherein the electric heating defrosting device usually adopts an electric heating wire defrosting mode.

The observation window 71 is a hollow resistance film heating frost prevention observation window, and the hollow resistance film heating frost prevention observation window is formed by sequentially combining outer glass, laminated glass and inner glass, wherein the laminated glass is clamped with a resistance wire. The resistance wire clamped in the laminated glass is very tiny and small to the shape which is difficult to observe by naked eyes, so that the observation effect of the observation window is prevented from being influenced.

The design of the space of a plurality of independent installation devices such as the refrigerating chamber 3, the evaporating chamber 4 and the pressure regulating chamber 5 is arranged on the case 1, so that the high-low temperature and low-pressure test chamber which can be independently managed by each device can be used, for example, when the test chamber is used for testing, the vacuum pump which does not need working conditions breaks down, the vacuum pump can be independently taken out, maintained and replaced under the condition that the test is not influenced, and the test process is not influenced.

The mounting disc 12 is fixedly mounted on the side wall of the laboratory 2, the mounting disc 12 is provided with a mounting disc opening, the test piece frame 13 is sequentially composed of a fixing frame 131, a test piece frame threaded end 132, a test piece frame outer plate 133 and a test piece frame handle, a sealing ring is mounted between the test piece frame threaded end 132 and the test piece frame outer plate 133, the test piece frame threaded end 132 is of a hollow structure, the fixing frame 131 is provided with a socket, the test piece frame outer plate 133 is provided with a test piece frame control plate, and the test piece frame control plate is electrically connected with the socket. Through the installation disc 12 and the test piece frame 13 installed on the installation disc 12, when a plurality of test pieces are required to be tested and detected in the same environment, a user can prepare the plurality of test piece frames 13 in advance, each test piece is independently installed on a fixing clamp of the test piece frame 13 and fixed, if electrical equipment needing to be connected with a power supply is electrified through a socket on the test piece frame 13, the electrifying condition of the test piece is controlled through a test piece frame control plate on a test piece frame outer plate 133, then one test piece frame 13 is installed on the installation disc 12 for testing, the test box can be stopped after the test is finished, the test piece frame 13 provided with the test piece after the test is finished is directly disassembled and taken out, the test piece frame 13 provided with a new test piece to be tested is replaced, the test is directly carried out in the original environment without stopping, the exhaust is not required, and the environment temperature of the test box is readjusted, the test box has the advantages that the detection efficiency is accelerated, the energy consumption is also saved, and the service life of the test box is indirectly prolonged. Wherein, the opening of the mounting disc on the mounting disc 12 is provided with an internal thread matched with the threaded end 132 of the test piece frame, and the effect of the sealing ring arranged between the threaded end 132 of the test piece frame and the outer plate 133 of the test piece frame is combined to form a mounting structure with thread meshing sealing.

Drawings

Fig. 1 is a front view of the high-low temperature low-pressure test chamber of the present invention.

Fig. 2 is a side view of the mounting plate 12 and the test piece holder 13 of the high-low temperature low-pressure test chamber of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1: the utility model discloses a high low temperature low pressure test box's one of them embodiment, when needs detect the reliability with the signal lamp on the aircraft that flies in high altitude environment, at first fix the signal lamp on manipulator 11, inject the power plug of signal lamp borrow this and provide working power supply for the signal lamp on test piece frame 13's the socket, manipulator 11 fiddley signal lamp to suitable experimental position on, close push-and-pull door 7, can begin to test.

Firstly, the pressure is reduced, the vacuum pump works to pump the air in the laboratory 2 to the specified air pressure, and the central controller controls the valve to stop the air from continuously losing. Then, the temperature is changed, for example, the temperature is reduced and then increased, when the temperature is reduced, the refrigerating device works, the heating wire 41 does not work, the evaporator 43 works, the air which is cooled is emitted, and the air blowing device 42 blows the air which is cooled to the inside of the test room 2 until the test room 2 reaches the designated temperature; when the temperature rises, the refrigeration device stops working, the heating wire 41 works, the evaporator 43 and the blowing device 42 continue working, so that the air radiated by the evaporator 43 is heated by the heating wire 41, and the air blown into the test room 2 is the air with partial heat, so as to reach the temperature rise of the test room 2. At this time, the user can continuously observe the working condition of the detected signal lamp through the observation window 71 and record the working condition.

After the experiment finishes, the temperature adjusting device stop work, and supercharging device work releases the air and recovers normal atmospheric pressure with the atmospheric pressure in laboratory 2, and then the user opens push-and-pull door 7, takes out or changes the equipment that needs to be detected, accomplishes and detects.

Referring to fig. 2, the present invention is another embodiment of the mounting plate 12 and the test piece rack 13 of the high-low temperature low-pressure test chamber: through the installation disc 12 and the test piece frame 13 installed on the installation disc 12, when a plurality of test pieces are required to be tested and detected in the same environment, a user can prepare the plurality of test piece frames 13 in advance, each test piece is independently installed on a fixing clamp of the test piece frame 13 and fixed, if electrical equipment needing to be connected with a power supply is electrified through a socket on the test piece frame 13, the electrifying condition of the test piece is controlled through a test piece frame control plate on a test piece frame outer plate 133, then one test piece frame 13 is installed on the installation disc 12 for testing, the test box can be stopped after the test is finished, the test piece frame 13 provided with the test piece after the test is finished is directly disassembled and taken out, the test piece frame 13 provided with a new test piece to be tested is replaced, the test is directly carried out in the original environment without stopping, the exhaust is not required, and the environment temperature of the test box is readjusted, the test box has the advantages that the detection efficiency is accelerated, the energy consumption is also saved, and the service life of the test box is indirectly prolonged.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.

Claims

1. The high-low temperature low-pressure test box is characterized by comprising a case (1), a temperature adjusting device and a pressure adjusting device, wherein the case (1) is provided with a test room (2), a refrigerating room (3), an evaporating room (4), a pressure adjusting room (5), a central controller (6) and a sliding door (7), the test room (2) is provided with a temperature sensing probe, a pressure sensing element, a manipulator (11) and a mounting disc (12), the temperature sensing probe and the pressure sensing element are in signal connection with the central controller (6), the mounting disc (12) is mounted on the side wall of the test room (2),

the temperature adjusting device is composed of a refrigerating device, a heating wire (41) and an air blowing device (42), the refrigerating device comprises an evaporator (43), the air blowing device (42), the heating wire (41) and the evaporator (43) are sequentially distributed and fixedly installed in an evaporation chamber (4), an air outlet is formed between the evaporation chamber (4) and a test room (2), the air outlet is adjacent to the evaporator (43), a sliding door (7) is hinged to be installed on the side face of a case (1), and an observation window (71) is arranged on the sliding door (7).

2. The high-low temperature low-pressure test chamber as claimed in claim 1, wherein the side walls of the test chamber (2) are provided with reinforcing bearing plates.

3. High and low temperature low pressure test chamber as claimed in claim 1, characterized in that the door frame of the sliding door (7) is provided with an electric defrosting device.

4. The high-low temperature low-pressure test chamber as claimed in claim 1, wherein the observation window (71) is a hollow resistance film heating frost-proof observation window, and the hollow resistance film heating frost-proof observation window is formed by sequentially combining outer glass, laminated glass and inner glass, and the laminated glass is sandwiched with resistance wires.

5. The high-low temperature low-pressure test chamber as claimed in claim 1, wherein the mounting plate (12) is fixedly mounted on a side wall of the test chamber (2), the mounting plate (12) is provided with a mounting plate opening, the mounting plate (12) is provided with a test piece rack (13), the test piece rack (13) sequentially comprises a fixing frame (131), a test piece rack threaded end (132), a test piece rack outer plate (133) and a test piece rack handle, a sealing ring is mounted between the test piece rack threaded end (132) and the test piece rack outer plate (133), the test piece rack threaded end (132) is of a hollow structure, the fixing frame (131) is provided with a socket and a fixing clamp, the test piece rack outer plate (133) is provided with a test piece rack control plate, and the test piece rack control plate is electrically connected with the socket.