CN201116908Y

CN201116908Y - High and low temperature shock test box

Info

Publication number: CN201116908Y
Application number: CNU2007201024121U
Authority: CN
Inventors: 李斌; 贾松林; 林波; 周立平
Original assignee: CETC 2 Research Institute
Current assignee: CETC 2 Research Institute
Priority date: 2007-08-29
Filing date: 2007-08-29
Publication date: 2008-09-17
Anticipated expiration: 2017-08-29

Abstract

The utility model discloses a high-low-temperature concussion test, which provides the experiment environment of a device for space which needs to do a compacting experiment of space temperature environment. The high-low-temperature concussion test comprises a refrigerating room (2), a heating room (4), an infrared heating (5), a moving carrier (6) and a mounting seat (7), wherein the refrigerating room is fixedly connected with the left of the heating room, a heating element is arranged in the heating room, and temperature sensors are respectively arranged on the opening of the refrigerating room, in the heating room and the moving carrier. The left end of the refrigerating room is connected with a self boosting liquid nitrogen bottle (1), the moving carrier (6) horizontal moves between the refrigerating room and the heating room, the infrared heating is arranged on the positive upper portion of the moving carrier in the heating room. The high-low-temperature concussion test has the advantages of simple structure and low cost, which can aim at products with different technique requirements to conveniently adjust cold and hot temperature.

Description

A kind of high low temperature thermal shock test chamber

Technical field

The utility model relates to a kind of equipment of simulation space temperature rapidly changing environment, particularly a kind of high low temperature thermal shock test chamber, and this equipment is mainly used in the workpiece that need carry out high low temperature temperature shock environmental experiment.

Background technology

At present, high low temperature temperature shock test mainly relies on compressor cooling to finish, but common compressor is difficult to competent two the very big environment temperatures of the height temperature difference of building, the device that particularly a lot of spaces are used all needs to do the environment of simulation space temperature-170 ℃～120 ℃ and does impulse test, therefore is badly in need of the high low temperature thermal shock test chamber of the fast-changing experimental situation of a kind of simulation space temperature of exploitation.

Summary of the invention

The utility model has solved traditional compressor can not provide-170 ℃～120 ℃ environment to do the technical matters of high low temperature temperature shock test, has realized changing fast from nearly 300 ℃ of temperature of-170 ℃ to+120 ℃ in 5 minutes.

The technical scheme that its technical matters that solves the utility model adopts is:

High low temperature thermal shock test chamber, comprise Programmable Logic Controller 13, the band expansion link cylinder 15 that on the heating chamber 4 that is provided with on the cool room 2 that is provided with on supercharging liquid nitrogen bottle 1, trapezoidal mount pad 7, the low seat, the dais, maximum block, is provided with at mount pad 7, between supercharging liquid nitrogen bottle 1 and cool room 2, be provided with liquid nitrogen delivery pipe 8, liquid nitrogen delivery pipe 8 is provided with low-temperature solenoid valve 9, and this valve is electrically connected and is subjected to it to control with Programmable Logic Controller 13; Be provided with temperature sensor 3 and liquid nitrogen 10 in the described cool room 2, temperature sensor 3 is electrically connected with Programmable Logic Controller 13; Be provided with the heating element 5 and the sensor 12 that are electrically connected with Programmable Logic Controller 13 respectively in the described heating chamber 4, be provided with the passage 11 of a band insertion plate door between the left side of the right side of cool room 2 and heating chamber 4, this passage can be for motion pallet 6 from cool room 2 to heating chamber 4 or 2 move horizontally back and forth from heating chamber 4 to cool room; The hole that the right side of cylinder 15 by heating chamber 4 is provided with puts in heating chamber 4 and is connected with motion pallet 6,15 actions of Programmable Logic Controller 13 control cylinders realize the 6 horizontal move left and right operations of motion pallet are movably set with in motion pallet 6 with Programmable Logic Controller 13 and are electrically connected sensor 14.

Described heating element 5 can be infrared heating element.Described sensor 14 preferably is movably set in by on the test element 16.

The beneficial effects of the utility model are, and are simple in structure, with low cost, and the product that can require at different process is regulated high and low temperature easily and realized high low temperature temperature shock test.

Description of drawings

Fig. 1 is vertical section structure figure of the present utility model

Fig. 2 is support holder structure figure of the present utility model

Fig. 3 is a PLC flow chart of the present utility model

Embodiment

Below in conjunction with accompanying drawing the utility model is described:

On low, the high mount pad of mount pad 7, place cool room 2 and heating chamber 4 respectively, passage 11 by a band insertion plate door in the middle of cool room 2 and the heating chamber 4 is communicated with, and Programmable Logic Controller drives motion pallet 6 by control cylinder 15 actions and moves between cool room 2 and heating chamber 4.When motion pallet 6 is being with measured workpiece 16 to enter cool room 2, the signal that Programmable Logic Controller reception temperature sensor 3,14 transmits makes the liquid nitrogen in supercharging liquid nitrogen bottle 1 be pressed into from cool room 2 left ends by control low-temperature solenoid valve 9, thereby change the liquid level of the liquid nitrogen 10 in the cool room 2, and then the indoor temperature of change cool room 2, promptly can realize the temperature of measured workpieces in the pallet 6 is controlled by liquid surface height controlling.In the time of in motion pallet 6 enters heating chamber 4, can improve pallets 6 interior temperature rapidly by control infrared heating element 5 all over the signal that range controller 13 reception temperature sensors 12,14 transmit.Change fast by motion pallet 6 height that to realize the measured workpiece temperature in the pallet 6 that between cool room 2 and heating chamber 4, moves around like this, thereby realize temperature shock.At first set attack time, temperature, number of times after Programmable Logic Controller 13 energisings, the program that brings into operation is then opened liquid nitrogen 10 with low-temperature solenoid valve 9 and is entered cool room, heating element 5 begins heating, motion this moment pallet 6 enters cool room 2, after temperature in the motion pallet 6 arrives design temperature, entering hot room 4 from cool room 2 by passage 11 behind the motion pallet 6 stop certain hours heats, after temperature in the motion pallet 6 arrives the heating-up temperature of setting, entering cool room 2 coolings, circulation reaches EOP (end of program) behind the set point number like this, finishes whole impact process.

Claims

1, a kind of high low temperature thermal shock test chamber, comprise Programmable Logic Controller (13), from supercharging liquid nitrogen bottle (1), trapezoidal mount pad (7), low seat at mount pad (7) is gone up the cool room (2) that is provided with, the heating chamber that is provided with on the dais (4), the cylinder (15) of the band expansion link that the horizontal pressure pin with motion pallet (6) that is provided with on the maximum block is fixedlyed connected, it is characterized in that, between supercharging liquid nitrogen bottle (1) and cool room (2), be provided with liquid nitrogen delivery pipe (8), liquid nitrogen delivery pipe (8) is provided with low-temperature solenoid valve (9), and this valve is electrically connected and is subjected to it to control with Programmable Logic Controller (13); Be provided with temperature sensor (3) and liquid nitrogen (10) in the described cool room (2), temperature sensor (3) is electrically connected with Programmable Logic Controller (13); Be provided with the heating element (5) and the sensor (12) that are electrically connected with Programmable Logic Controller (13) respectively in the described heating chamber (4), be provided with the passage (11) of a band insertion plate door between the left side of the right side of cool room (2) and heating chamber (4), this passage can move horizontally to cool room (2) from cool room (2) to heating chamber (4) or from heating chamber (4) back and forth for motion pallet (6); Right side at motion pallet (6) fixedly installs horizontal pressure pin, this pressure pin stretches out heating chamber (4) by the hole of the right side setting of heating chamber (4) and is connected with the expansion link of described cylinder (15), Programmable Logic Controller (13) control cylinder (15) is realized the horizontal move left and right to the motion pallet, is movably set with the sensor (14) that is electrically connected with Programmable Logic Controller (13) in motion pallet (6).

2, a kind of high low temperature thermal shock test chamber according to claim 1 is characterized in that described heating element (5) is an infrared heating element.

3, a kind of high low temperature thermal shock test chamber according to claim 1 and 2 is characterized in that, described sensor (14) is movably set in by on the test element (16).