CN203414861U - High and low temperature test environment control device used for geotechnical model tests - Google Patents
High and low temperature test environment control device used for geotechnical model tests Download PDFInfo
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- CN203414861U CN203414861U CN201320547933.3U CN201320547933U CN203414861U CN 203414861 U CN203414861 U CN 203414861U CN 201320547933 U CN201320547933 U CN 201320547933U CN 203414861 U CN203414861 U CN 203414861U
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- low temperature
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Abstract
The utility model discloses a high and low temperature test environment control device used for geotechnical model tests. The main structure of the device is as follows: a test model is arranged inside a test box; a temperature sensor is installed inside the test box; an air inlet of the test box is connected to an air outlet of a high and low temperature gas storage cabin through an air-supply pipe; an air outlet of the test box is connected to an air inlet of the high and low temperature gas storage cabin through a backwind tube; an axial flow fan is installed inside a pipeline of the air-supply pipe and the wind direction of the axial flow fan is from the high and low temperature gas storage cabin to the test box; a built-in heat exchanger of compression-type cooling and heating equipment is installed inside the high and low temperature gas storage cabin and a main engine of the compression-type cooling and heating equipment is mounted outside the high and low temperature gas storage cabin; and an electrical heating wire for auxiliary heating is also mounted inside the high and low temperature gas storage cabin. The device provided by the utility model can be used for low temperature model tests as well as high temperature model tests. The device has advantages of low test cost, simple operation and more reliable and accurate test result.
Description
Technical field
The utility model relates to a kind of thermocycling environment control unit for geotechnical model test, belongs to geotechnical model test technical field.
Background technology
Temperature environment affects highly significant to civil engineering structure, aging etc. when the thaw collapse frost-heaving deformation of rut, railway and the highway subgrade occurring during as cracking when the low temperature of the expanding with heat and contract with cold of construction material, bituminous concrete pavement and high temperature, elastomeric material high temperature.Model test is the main method that engineering structure is studied, and is the properties of research engineering structure under high temperature and low temperature environment, usually test model will be placed in and under different high temperature and low temperature environment, carry out model test.
Current, the field test of relevant works structure temperature performance and site test adopt the chamber that can manufacture required environment temperature to test conventionally, such chamber only has single refrigeration or heat-production functions mostly, model test under high temperature and low temperature environment need be used different chambers, and troublesome poeration, experimentation cost are high.Meanwhile, high-temperature test chamber adopts electrical heating wire to heat conventionally, and test model and electrical heating wire are in the same space, and temperature field uneven around electrical heating wire is very large on the impact of test model, has a strong impact on reliability and the accuracy of test.
Utility model content
The purpose of this utility model is to provide a kind of thermocycling environment control unit for geotechnical model test, use this device both can carry out low temperature model test and also can carry out high temperature model test, its experimentation cost is low, simple to operate, test findings is more reliable and accurate.
The utility model is for realizing its object, and the technical scheme adopting is: a kind of thermocycling environment control unit for geotechnical model test, is characterized in that:
Test model is placed in chamber, and chamber inside is provided with temperature sensor, and the air intake opening of chamber is connected with the gas outlet in high low temperature gas storage cabin by blast pipe; The gas outlet of chamber is connected with the air intake opening in high low temperature gas storage cabin by backwind tube; In the pipeline of blast pipe, axial flow blower is housed, its wind direction is for blowing to chamber from high low temperature gas storage cabin; The embedded heat exchanger of compression-type refrigeration heating equipment is arranged in high low temperature gas storage cabin, and the main frame of compression-type refrigeration heating equipment is arranged on high low temperature gas storage out of my cabin; The electrical heating wire of auxiliary heating is also installed in high low temperature gas storage cabin;
Temperature sensor is connected with the control signal input end of intelligent temperature controller; The control signal output terminal of intelligent temperature controller is connected with the winding wiring terminal of A.C. contactor; The main contacts input end of A.C. contactor is connected with mains supply, and the main contacts output terminal of A.C. contactor is connected with the feed circuit of compression-type refrigeration heating equipment, and the main contacts output terminal of A.C. contactor is connected with electrical heating wire by a switch.
The course of work of the present utility model and principle are:
Low temperature model test: open axial flow blower, and disconnect the switch of electrical heating wire, intelligent temperature controller is adjusted to refrigeration mode, design temperature lower limit and temperature upper limit, and make compression-type refrigeration heating equipment in refrigerating state.The temperature value that temperature sensor in chamber feeds back to intelligent temperature controller is during higher than temperature upper limit, it is closed that intelligent temperature controller is controlled A.C. contactor, compression-type refrigeration heating equipment feed circuit are connected, and the embedded heat exchanger of compression-type refrigeration heating equipment reduces the gas temperature in high low temperature gas storage storehouse.Under the effect of axial flow blower, the gas in chamber and high low temperature gas storage storehouse forms closed circulation, and the gas temperature of both inside synchronously reduces.The temperature of measuring when temperature sensor lower than set lower limit time intelligent temperature controller control compression-type refrigeration heating equipment and shut down.So move in circles, in chamber, gas temperature remains in the temperature range of setting.Then the test model in chamber is carried out to corresponding test operation and data observation record, can complete the model test setting under low temperature environment.
High temperature model test: open axial flow blower, intelligent temperature controller is adjusted to heating mode, design temperature lower limit and temperature upper limit, and make compression-type refrigeration heating equipment in heating state.The temperature value that temperature sensor in chamber feeds back to intelligent temperature controller is during lower than lowest temperature value, it is closed that intelligent temperature controller is controlled A.C. contactor, compression-type refrigeration heating equipment feed circuit are connected, and the embedded heat exchanger of compression-type refrigeration heating equipment raises the gas temperature in high low temperature gas storage storehouse.Under the effect of axial flow blower, the air in chamber and high low temperature gas storage storehouse forms closed circulation, and the air themperature of both inside synchronously raises.The temperature of measuring when temperature sensor higher than set higher limit time intelligent temperature controller control compression-type refrigeration heating equipment and shut down.So move in circles, in chamber, air themperature remains in the temperature range of setting.Then the test model in chamber is carried out to corresponding test operation and data observation record, can complete the model test setting under hot environment.
During high temperature model test, as higher in larger, the required test ambient temperature of high low temperature gas storage cabin internal-external temperature difference or need to heat fast time, switch that can closed electrical heater strip, carries out electric auxiliary heating to high low temperature gas storage storehouse.
Compared with prior art, the beneficial effects of the utility model are:
One, the utility model both can carry out low temperature model test and also can carry out high temperature model test, one-object-many-purposes, and two kinds of pattern conversions are convenient, and without moving heavy test model, its experimentation cost is low, simple to operate.
Two, the refrigerating and heating combined equipment in high low temperature gas storage of the present utility model storehouse and chamber and test model split, gas in high low temperature gas storage storehouse after refrigeration or heating is under the effect of axial flow blower, flow into chamber by blast pipe, by backwind tube, flow back to high low temperature gas storage storehouse again, cooling or the temperature-rise period of chamber by gas circulation, have been accelerated, the isolation of chamber and refrigeration or heating source has guaranteed the homogeneity of test model ambient temperature field, makes test findings more reliable and accurate.
Above-mentioned chamber air inlet place is provided with the electronic wind deflector that can swing up and down.
Like this, can further improve the homogeneity in temperature field in chamber.
Above-mentioned chamber is made by insulation material that can resistance test environment temperature, and chamber is bottomless box, and the sidewall bottom of casing is provided with insulation rubber cushion.
Like this, the utility model is applicable to being fixed on immovable test model on ground, and the insulation rubber cushion of the sidewall of casing bottom can better keep the temperature in chamber.
Above-mentioned chamber is made by insulation material that can resistance test environment temperature, and chamber (1) is the casing of sealing.
Like this, the utility model, applicable to test model that can be independently mobile, during test moves test model the casing of putting into sealing, and the temperature in tryoff is more accurate, controlled.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the circuit theory schematic diagram of the utility model embodiment 1.
Embodiment
Embodiment 1
Fig. 1,2 illustrates, and a kind of embodiment of the present utility model is, a kind of thermocycling environment control unit for geotechnical model test, and its composition is:
Test model 0 is placed in chamber 1, and chamber 1 inside is provided with temperature sensor 8, and the air intake opening of chamber 1 is connected with the gas outlet in high low temperature gas storage cabin 3 by blast pipe 2; The gas outlet of chamber 1 is connected with the air intake opening in high low temperature gas storage cabin 3 by backwind tube 4; Axial flow blower 5 is housed in the pipeline of blast pipe 2, and its wind direction is for blowing to chamber 1 from high low temperature gas storage cabin 3; The embedded heat exchanger 6b of compression-type refrigeration heating equipment is arranged in high low temperature gas storage cabin 3, and the main frame 6c of compression-type refrigeration heating equipment is arranged on outside high low temperature gas storage cabin 3; The electrical heating wire 7 of auxiliary heating is also installed in high low temperature gas storage cabin 3;
This routine chamber 1 air inlet place is provided with the electronic wind deflector 1a that can swing up and down.
This routine chamber 1 is made by insulation material that can resistance test environment temperature, and chamber 1 is bottomless box, and the sidewall bottom of casing is provided with insulation rubber cushion 1b.
The formation of the formation of this example and embodiment 1 is basic identical, different only: this routine chamber 1 is made by insulation material that can resistance test environment temperature, and chamber 1 is the casing of sealing.
Claims (4)
1. for a thermocycling environment control unit for geotechnical model test, it is characterized in that:
Test model (0) is placed in chamber (1), and chamber (1) inside is provided with temperature sensor (8), and the air intake opening of chamber (1) is connected with the gas outlet in high low temperature gas storage cabin (3) by blast pipe (2); The gas outlet of chamber (1) is connected with the air intake opening in high low temperature gas storage cabin (3) by backwind tube (4); Axial flow blower (5) is housed in the pipeline of blast pipe (2), and its wind direction is for blowing to chamber (1) from high low temperature gas storage cabin (3); The embedded heat exchanger of compression-type refrigeration heating equipment (6b) is arranged in high low temperature gas storage cabin (3), and the main frame of compression-type refrigeration heating equipment (6c) is arranged on outside high low temperature gas storage cabin (3); The electrical heating wire (7) of auxiliary heating is also installed in high low temperature gas storage cabin (3);
Temperature sensor (8) is connected with the control signal input end of intelligent temperature controller (9); The control signal output terminal of intelligent temperature controller (9) is connected with the winding wiring terminal of A.C. contactor (10); The main contacts input end of A.C. contactor (10) is connected with mains supply, the main contacts output terminal of A.C. contactor (10) is connected with the feed circuit (6a) of the main frame (6c) of compression-type refrigeration heating equipment, and the main contacts output terminal of A.C. contactor (10) is connected with electrical heating wire (7) by a switch (7a).
2. a kind of thermocycling environment control unit for geotechnical model test according to claim 1, is characterized in that: described chamber (1) air inlet place is provided with the electronic wind deflector (1a) that can swing up and down.
3. a kind of thermocycling environment control unit for geotechnical model test according to claim 1, it is characterized in that: described chamber (1) is made by insulation material that can resistance test environment temperature, chamber (1) is bottomless box, and the sidewall bottom of casing is provided with insulation rubber cushion (1b).
4. a kind of thermocycling environment control unit for geotechnical model test according to claim 1, is characterized in that: described chamber (1) is made by insulation material that can resistance test environment temperature, and chamber (1) is the casing of sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320547933.3U CN203414861U (en) | 2013-09-04 | 2013-09-04 | High and low temperature test environment control device used for geotechnical model tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320547933.3U CN203414861U (en) | 2013-09-04 | 2013-09-04 | High and low temperature test environment control device used for geotechnical model tests |
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| Publication Number | Publication Date |
|---|---|
| CN203414861U true CN203414861U (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320547933.3U Expired - Fee Related CN203414861U (en) | 2013-09-04 | 2013-09-04 | High and low temperature test environment control device used for geotechnical model tests |
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| Country | Link |
|---|---|
| CN (1) | CN203414861U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000483A (en) * | 2016-06-29 | 2016-10-12 | 中国计量科学研究院 | Condensation-controllable split type testing tank |
| CN110186776A (en) * | 2019-05-24 | 2019-08-30 | 太原理工大学 | A kind of multiphase coupled creep loading experimental rig of fragmented rock body and test method |
| CN113125333A (en) * | 2021-04-15 | 2021-07-16 | 北京卫星环境工程研究所 | High-low temperature box for spacecraft structural stability test |
-
2013
- 2013-09-04 CN CN201320547933.3U patent/CN203414861U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000483A (en) * | 2016-06-29 | 2016-10-12 | 中国计量科学研究院 | Condensation-controllable split type testing tank |
| CN106000483B (en) * | 2016-06-29 | 2019-11-01 | 中国计量科学研究院 | A kind of split type chamber that condensation is controllable |
| CN110186776A (en) * | 2019-05-24 | 2019-08-30 | 太原理工大学 | A kind of multiphase coupled creep loading experimental rig of fragmented rock body and test method |
| CN113125333A (en) * | 2021-04-15 | 2021-07-16 | 北京卫星环境工程研究所 | High-low temperature box for spacecraft structural stability test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20160904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |