CN109883739B - Heat insulation device and method - Google Patents
Heat insulation device and method Download PDFInfo
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- CN109883739B CN109883739B CN201711274327.8A CN201711274327A CN109883739B CN 109883739 B CN109883739 B CN 109883739B CN 201711274327 A CN201711274327 A CN 201711274327A CN 109883739 B CN109883739 B CN 109883739B
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Abstract
The invention provides a heat insulation device and a heat insulation method, which comprise an adapter, an embedded water channel, an electromagnetic valve, a controller and a temperature sensor, wherein the center of the lower end surface of the adapter is provided with a round hole for installing the embedded water channel, the embedded water channel is coiled into a hollow columnar structure by a water pipe around the circumference, a water inlet and a water outlet of the embedded water channel penetrate through the side wall of the lower part of the adapter, the water inlet of the embedded water channel is connected with an outlet C of the electromagnetic valve through a pipeline, an inlet A, B of the electromagnetic valve is respectively connected with a water supply pipeline and a water return pipeline of a test box, the water outlet of the embedded water channel is connected with the water return pipeline of the test box, the temperature sensor is arranged in the test box, the controller measures the temperature in the. The invention adopts the mode that the adapter is configured with the embedded water channel, thereby not only playing the roles of connecting the test piece clamp with the mechanical decoupling device and transmitting vibration, but also preventing the heat or cold in the test box from being transmitted downwards through the circulating water of the embedded water channel.
Description
Technical Field
The invention relates to a heat insulation device and a heat insulation method, and belongs to the technical field of temperature-humidity-vibration comprehensive environment tests.
Background
The temperature-humidity-vibration integrated environment test system (referred to as an integrated environment test system for short) is formed by integrating a temperature and humidity test box (referred to as a test box for short) capable of generating a temperature and humidity environment and a vibration table capable of generating a vibration environment, is common equipment for performing a temperature-humidity-vibration integrated environment test and a reliability test on aerospace products, and can apply environmental stresses such as temperature, humidity, vibration and the like according to a specified test section. Wherein, the proof box includes heating system (including heater, fan etc.), refrigerating system (including compressor, evaporimeter, condenser etc.), humidification system, dehumidification system and control system etc. and its control temperature's principle is: blowing heat generated by the heater into the test box through a fan to form circulating air so as to heat or maintain high temperature in the test box; the refrigerant is compressed by the compressor and enters the evaporator inside the test box, the refrigerant is gasified to absorb heat, so that the temperature inside the test box is reduced or low temperature is maintained, and the heat absorbed by the refrigerant gasification is carried out of the test box in the condenser through the circulating water pipeline. The circulating water pipeline comprises a water supply pipeline and a water return pipeline, water supply is from underground water or a water storage tank, and the water temperature is slightly different along with seasonal changes and is generally not higher than 20 ℃; the return water temperature is related to factors such as water supply temperature, water supply flow, test box working conditions and the like, and is generally higher than the water supply temperature by more than 3 ℃.
According to the difference of the physical characteristics of the test pieces, the comprehensive environment test system is slightly different in the aspects of test box volume, vibration table thrust, vibration table quantity and the like. In recent years, comprehensive environmental test systems based on two (or more) single-shaft vibration tables are widely used for the requirements of simultaneously applying different vibration test conditions to different positions of a large-sized elongated body. When the system is applied to testing, a test piece is connected with the mechanical decoupling device through the clamp, and then the mechanical decoupling device is fixed on the vibration table. The method specifically refers to a vibration transmission mechanical device adopted for eliminating or reducing the adverse effects of the coupling motion of two (or more) vibration on the test piece and the vibration table and a tactical missile full-missile double-vibration-table vibration test method QJ 20193-2012.
In the test process, the temperature and the humidity in the test box constantly change, and are transmitted to the mechanical decoupling device through the test piece clamp, so that the surface temperature of the mechanical decoupling device is greatly different from the air environment outside the test box, the lubricating degree of the internal lubricating oil and the sealing performance of the whole device are influenced, the decoupling effect of the mechanical decoupling device is reduced, and the mechanical damage of the test piece can be caused in the serious condition. Meanwhile, due to temperature change, the mechanical decoupling device has the phenomenon of surface condensation or frosting, and dew or frost melt water can flow downwards into the vibrating table, so that serious accidents such as burning of the moving coil are caused.
To avoid these consequences, it is common practice to add a layer of non-metallic thermal insulation between the specimen holder and the mechanical decoupling assembly. However, as the mass of the test piece increases, the temperature stabilization time is increased from 1-3 hours to more than 20 hours, and the heat insulation mode cannot effectively prevent the heat or cold in the test box from being transferred downwards.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a heat insulation device and a method for effectively preventing heat or cold in a test box from being transferred downwards so that the surface temperatures of a mechanical decoupling device and a vibration table are not influenced by the temperature in the test box.
The technical solution of the invention is as follows: the utility model provides a heat-proof device, includes adapter, embedded water course, solenoid valve, controller and temperature sensor, the adapter up end be connected with the test piece anchor clamps, the terminal surface is connected with mechanical decoupling zero device down, the embedded water course of round hole installation is opened at lower terminal surface center, embedded water course coil into hollow columnar structure around the circumference by a water pipe, embedded water course advance, the delivery port is worn out from the lateral wall of adapter lower part, embedded water course water inlet passes through the pipeline and is connected with the export C of solenoid valve, the supply channel and the return water pipeline of proof box are connected respectively to the import A, B of solenoid valve, embedded water course delivery port is connected with the return water pipeline of proof box, temperature sensor install in the proof box, the controller passes through temperature sensor measurement test incasement to control solenoid valve import A, B according to the temperature in the proof box.
The controller controls the electromagnetic valve inlet A, B as follows:
if the temperature in the test box is higher than T2The controller controls the inlet A of the electromagnetic valve to be opened and the inlet B of the electromagnetic valve to be closed, water in a water supply pipeline of the test box flows through the outlet C of the electromagnetic valve to enter from the water inlet of the embedded water channel and is discharged from the water outlet of the embedded water channel to a water return pipeline of the test box, and heat transferred downwards through the test piece clamp and the adapter is taken away;
if the temperature in the test chamber is lower than T1The controller controls the inlet A of the electromagnetic valve to be closed and the inlet B of the electromagnetic valve to be opened, return water in a return water pipeline of the test box flows through the outlet C of the electromagnetic valve to enter from the water inlet of the embedded water channel and is discharged into the return water pipeline of the test box from the water outlet of the embedded water channel, and cold energy transferred downwards through the test piece clamp and the adapter is counteracted;
if the temperature in the test chamber is [ T ]1,T2]Within the range, the controller controls the inlet A, B of the electromagnetic valve to be closed completely, opened completely or opened and closed once, and within the temperature range, the temperature in the test box has little influence on the mechanical decoupling device and the vibration table, active heat insulation treatment can be carried out without or, and the skilled person in the art selects the temperature according to the requirements.
The T is1For the temperature of the water supply in the water supply line of the test chamber, T2Is the return water temperature T in the return water pipeline of the test chamber1<T2，T1Generally not higher than 20 ℃ and T2Generally higher than T1Above 3 ℃.
The inlet B of the electromagnetic valve is connected with the water return pipeline of the test box, and the inlet B of the electromagnetic valve is closer to the test box than the joint of the water outlet of the embedded water channel and the water return pipeline of the test box, so that the water temperature entering the inlet of the embedded water channel through the inlet B of the electromagnetic valve is ensured.
The embedded water channel is manufactured by processing a copper pipe, the embedded water channel is in interference fit with the round hole on the lower end face of the adapter, and the outer diameter of the embedded water channel is 5-10 mm larger than the diameter of the round hole on the lower end face of the adapter.
A method of insulating heat by:
firstly, the installation of the heat insulation device,
the heat insulation device comprises an adapter, an embedded water channel, an electromagnetic valve, a controller and a temperature sensor, wherein the embedded water channel is installed in the adapter, the upper end face of the adapter is connected with a test piece clamp, the lower end face of the adapter is connected with a mechanical decoupling device, a water inlet of the embedded water channel is connected with an outlet C of the electromagnetic valve through a pipeline, an inlet A, B of the electromagnetic valve is respectively connected with a water supply pipeline and a water return pipeline of the test box, a water outlet of the embedded water channel is connected with the water return pipeline of the test box, the temperature sensor is installed in the test box, and the controller is connected;
secondly, when the comprehensive environment test is started, the controller measures the temperature in the test box through the temperature sensor and controls the inlet A, B of the electromagnetic valve according to the temperature in the test box,
a2.1, judging the temperature T in the environment test box, and if T is detected>T2Then proceed to step A2.2 if T<T1Then step A2.3 is performed if T ∈ [ T1,T2]Step a2.4 is performed;
a2.2, the controller controls an inlet A of the electromagnetic valve to be opened and an inlet B of the electromagnetic valve to be closed, water in a water supply pipeline of the test box flows through an outlet C of the electromagnetic valve, enters from a water inlet of the embedded water channel, is discharged into a water return pipeline of the test box from a water outlet of the embedded water channel, and returns to the step A2.1;
a2.3, the controller controls the inlet A of the electromagnetic valve to be closed and the inlet B of the electromagnetic valve to be opened, return water in a return water pipeline of the test box flows through the outlet C of the electromagnetic valve, enters from the water inlet of the embedded water channel, is discharged into the return water pipeline of the test box from the water outlet of the embedded water channel, and returns to the step A2.1;
and A2.4, the controller controls the inlet A, B of the electromagnetic valve to be fully closed, fully opened or opened and closed, and the step A2.1 is returned.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention adopts the mode that the adapter is configured with the embedded water channel, thereby not only playing the roles of connecting the test piece clamp with the mechanical decoupling device and transmitting vibration, but also preventing the heat or cold in the test box from being transmitted downwards through the circulating water of the embedded water channel;
(2) according to the invention, the circulating water with the embedded water channel is automatically opened according to the temperature in the test box, so that the heat or cold in the test box is actively prevented from being transferred;
(3) according to the invention, the circulating water with the embedded water channel comes from a water supply pipeline or a water return pipeline of the test box, and the self temperature characteristics of the water supply pipeline and the water return pipeline are utilized to take away heat or offset cold, so that an additional temperature adjusting device is not required to be added;
(4) the heat insulation device and the method can ensure that the surface temperature of the mechanical decoupling device is close to the atmospheric temperature, reduce the internal and external temperature difference and the surface condensation or frosting phenomenon, achieve the purposes of protecting test equipment and ensuring the test safety, and have very good popularization and use values.
Drawings
FIG. 1 is a schematic view of a test apparatus employing the present invention;
figure 2 is an overall view of the adapter of the present invention;
figure 3 is a bottom view of the adapter of the present invention;
fig. 4 is a schematic view of the structure of the embedded water channel of the present invention.
Wherein 1 adapter, 2 embedded water course, 3 embedded water course water inlets, 4 embedded water course delivery ports, 5 test bottom of the case board, 6 mechanical decoupling zero devices, 7 shaking tables, 8 test piece anchor clamps, 9 test pieces, 10 hoses, 11 solenoid valves, 12 control appearance, 13 temperature sensor, 14 test case water supply line, 15 test case return water pipelines.
Detailed Description
The present invention will be described in detail with reference to the following examples and accompanying drawings.
The invention is shown in figure 1, comprising an adapter 1, an embedded water channel 2, an electromagnetic valve 11, a controller 12 and a temperature sensor 13, wherein the center of the lower end surface of the adapter 1 is provided with a round hole for installing the embedded water channel 2, the water inlet and outlet 3 and 4 of the embedded water channel penetrate out from the side wall of the lower part of the adapter 1, the water inlet 3 of the embedded water channel is connected with the outlet C of the electromagnetic valve 11 through a hose 10, the inlet A, B of the electromagnetic valve 11 is respectively connected with the water supply pipeline 14 and the water return pipeline 15 of a test box, the water outlet 4 of the embedded water channel is connected with the water return pipeline 15 of the test box through the hose 10, the temperature sensor 13 is arranged in the test box, the controller 12 measures the temperature in the test box through the temperature.
As shown in fig. 2 and 3, the adapter 1 is cast from cast iron or aluminum alloy material, and is machined, and may be an integral structure or welded after being separately machined. The upper end face of the adapter can be connected with a test piece clamp 8, the lower end face of the adapter is connected with a mechanical decoupling device 6, and a circular hole is formed in the center of the lower end face.
The embedded water channel is as shown in figure 4, a copper pipe is coiled around the circumference to form a hollow columnar structure, and the outer diameter of the embedded water channel is 5mm larger than the diameter of a round hole on the lower end face of the adapter. And the embedded water channel is arranged in the round hole on the lower end face of the adapter, and the water inlet 3 and the water outlet 4 penetrate out from the side wall of the adapter.
The port C of the electromagnetic valve 11 is connected to the water inlet 3 of the embedded water channel through a hose. The ports A and B of the electromagnetic valves are respectively connected to a water supply pipeline 14 and a water return pipeline 15 of the test box through hoses, and one-way valves are arranged at the joints to ensure the water flow as shown in the attached figure 1.
The controller 12 measures the temperature in the test chamber by the temperature sensor 13 and controls the solenoid valve.
The invention also provides a heat insulation method, which is realized by the following steps:
1. the test apparatus (test chamber, mechanical decoupling device 6, vibration table 7, thermal insulation device) and the test piece 9 were connected as shown in fig. 1.
2. When the comprehensive environment test is started, the controller measures the temperature in the test box through the temperature sensor and controls the inlet A, B of the electromagnetic valve according to the temperature in the test box.
(1) Judging the temperature T in the test box in real time, and if T is detected>T2Then proceed to step (2) if T<T1Then go to step (3) if T ∈ [ T [)1,T2]Then step (4) is carried out;
(2) the controller controls an inlet A of the electromagnetic valve to be opened and an inlet B of the electromagnetic valve to be closed, water in a water supply pipeline of the test box flows through an outlet C of the electromagnetic valve, enters from a water inlet of the embedded water channel, is discharged into a water return pipeline of the test box from a water outlet of the embedded water channel, and returns to the step (1);
(3) the controller controls the inlet A of the electromagnetic valve to be closed and the inlet B of the electromagnetic valve to be opened, return water in a return water pipeline of the test box flows through the outlet C of the electromagnetic valve, enters from the water inlet of the embedded water channel, is discharged into the return water pipeline of the test box from the water outlet of the embedded water channel, and returns to the step (1);
(4) and (4) controlling the inlet A, B of the electromagnetic valve to be fully closed by the controller, and returning to the step (1).
The invention has not been described in detail and is in part known to those of skill in the art.
Claims (6)
1. A thermal insulation device, characterized by: the device comprises an adapter, an embedded water channel, an electromagnetic valve, a controller and a temperature sensor, wherein the center of the lower end face of the adapter is provided with a round hole for installing the embedded water channel, the embedded water channel is coiled into a hollow columnar structure by a water pipe around the circumference, the water inlet and the water outlet of the embedded water channel penetrate out from the side wall of the lower part of the adapter, the water inlet of the embedded water channel is connected with the outlet C of the electromagnetic valve through a pipeline, the inlet A, B of the electromagnetic valve is respectively connected with the water supply pipeline and the water return pipeline of a test box, the water outlet of the embedded water channel is connected with the water return pipeline of the test box, the temperature sensor is arranged in the test box, the controller measures the temperature in the test box through the temperature sensor and controls the inlet A, B of the electromagnetic valve according to the temperature;
the controller controls the electromagnetic valve inlet A, B as follows:
if the temperature in the test box is higher than T2The controller controls the inlet A of the electromagnetic valve to be opened and the inlet B of the electromagnetic valve to be closed, and the water supply in the water supply pipeline of the test box is carried outWater flows through an outlet C of the electromagnetic valve, enters from a water inlet of the embedded water channel and is discharged into a water return pipeline of the test box from a water outlet of the embedded water channel;
if the temperature in the test chamber is lower than T1The controller controls the inlet A of the electromagnetic valve to be closed and the inlet B of the electromagnetic valve to be opened, return water in a return water pipeline of the test box flows through the outlet C of the electromagnetic valve to enter from the water inlet of the embedded water channel and is discharged into the return water pipeline of the test box from the water outlet of the embedded water channel;
if the temperature in the test chamber is [ T ]1,T2]Within the range, the controller controls the inlet A, B of the electromagnetic valve to be fully closed, fully opened or opened and closed;
the T is1For the temperature of the water supply in the water supply line of the test chamber, T2Is the return water temperature T in the return water pipeline of the test chamber1＜T2。
2. A thermal insulation apparatus according to claim 1, characterized in that: the inlet B of the electromagnetic valve is connected with the return water pipeline of the test box, and is closer to the test box than the joint of the water outlet of the embedded water channel and the return water pipeline of the test box.
3. A thermal insulation apparatus according to claim 1, characterized in that: the embedded water channel is manufactured by processing a copper pipe, the embedded water channel is in interference fit with the round hole on the lower end face of the adapter, and the outer diameter of the embedded water channel is 5-10 mm larger than the diameter of the round hole on the lower end face of the adapter.
4. A method of insulating heat, characterized by the steps of:
firstly, the installation of the heat insulation device,
the heat insulation device comprises an adapter, an embedded water channel, an electromagnetic valve, a controller and a temperature sensor, wherein the embedded water channel is installed in the adapter, the upper end face of the adapter is connected with a test piece clamp, the lower end face of the adapter is connected with a mechanical decoupling device, a water inlet of the embedded water channel is connected with an outlet C of the electromagnetic valve through a pipeline, an inlet A, B of the electromagnetic valve is respectively connected with a water supply pipeline and a water return pipeline of the test box, a water outlet of the embedded water channel is connected with the water return pipeline of the test box, the temperature sensor is installed in the test box, and the controller is connected;
and secondly, starting the comprehensive environment test, measuring the temperature in the test box by the controller through the temperature sensor, controlling the inlet A, B of the electromagnetic valve according to the temperature in the test box, and controlling T1For the temperature of the water supply in the water supply line of the test chamber, T2Is the return water temperature T in the return water pipeline of the test chamber1＜T2；
A2.1, judging the temperature T in the environmental test chamber, if T is more than T2Then proceed to step A2.2 if T < T1Then step A2.3 is performed if T ∈ [ T1,T2]Step a2.4 is performed;
a2.2, the controller controls an inlet A of the electromagnetic valve to be opened and an inlet B of the electromagnetic valve to be closed, water in a water supply pipeline of the test box flows through an outlet C of the electromagnetic valve, enters from a water inlet of the embedded water channel, is discharged into a water return pipeline of the test box from a water outlet of the embedded water channel, and returns to the step A2.1;
a2.3, the controller controls the inlet A of the electromagnetic valve to be closed and the inlet B of the electromagnetic valve to be opened, return water in a return water pipeline of the test box flows through the outlet C of the electromagnetic valve, enters from the water inlet of the embedded water channel, is discharged into the return water pipeline of the test box from the water outlet of the embedded water channel, and returns to the step A2.1;
and A2.4, the controller controls the inlet A, B of the electromagnetic valve to be fully closed, fully opened or opened and closed, and the step A2.1 is returned.
5. A method of insulating as claimed in claim 4, wherein: the inlet B of the electromagnetic valve is connected with the return water pipeline of the test box in the first step, and the inlet B of the electromagnetic valve is closer to the test box than the junction of the embedded water channel water outlet and the return water pipeline of the test box.
6. A method of insulating as claimed in claim 4, wherein: the first step is characterized in that the copper pipe for the embedded water channel is processed and manufactured, the embedded water channel is in interference fit with the round hole in the lower end face of the adapter, and the outer diameter of the embedded water channel is 5-10 mm larger than the diameter of the round hole in the lower end face of the adapter.
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| CN201711274327.8A CN109883739B (en) | 2017-12-06 | 2017-12-06 | Heat insulation device and method |
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| CN201711274327.8A CN109883739B (en) | 2017-12-06 | 2017-12-06 | Heat insulation device and method |
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| CN109883739A CN109883739A (en) | 2019-06-14 |
| CN109883739B true CN109883739B (en) | 2020-09-22 |
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| CN114860000B (en) * | 2022-07-06 | 2022-09-23 | 中国飞机强度研究所 | Temperature rise and drop control device and method for airplane pneumatic thermal environment simulation test |
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| CN101000972B (en) * | 2006-12-28 | 2011-05-11 | 奇瑞汽车有限公司 | Thermal control device for battery of mixed power vehicle |
| CN201126397Y (en) * | 2007-12-17 | 2008-10-01 | 苏州试验仪器总厂 | Connecting structure for vibration table and synthetic climate case |
| CN104437683B (en) * | 2014-11-27 | 2016-03-16 | 华测检测认证集团股份有限公司 | High temperature and humidity test case |
| RU156621U1 (en) * | 2015-05-07 | 2015-11-10 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | TABLE COOLED |
| CN205483460U (en) * | 2015-12-11 | 2016-08-17 | 天津航天瑞莱科技有限公司 | High temperature is heat -proof device for vibration test |
| CN105509982B (en) * | 2015-12-21 | 2018-01-16 | 中国燃气涡轮研究院 | A kind of experiment of Temperature High Cycle Fatigue is with being thermally isolated device |
| CN206311424U (en) * | 2016-12-30 | 2017-07-07 | 苏州世力源科技有限公司 | For the cold water dish structure of bicyclic border fatigue tester |
| CN106969896A (en) * | 2017-04-26 | 2017-07-21 | 北京强度环境研究所 | A kind of recirculated water cooling vibrates attachment means |
| CN107101791A (en) * | 2017-05-27 | 2017-08-29 | 北京强度环境研究所 | A kind of multidimensional heat, which is shaken, tests connection system |
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