High and low temperature test device applying heat conduction oil heating system

Abstract

The utility model discloses a high and low temperature test device applying a heat conduction oil heating system. The high and low temperature test device comprises environment equipment, an air duct cabin and an environment cabin are arranged in a shell of the environment equipment, a circulating fan is installed at the top of the air duct cabin and discharges air towards a heat-conducting oil pipeline, a refrigeration evaporator is installed on the side, away from the circulating fan, of the heat-conducting oil pipeline, and an air inlet and an air outlet for communicating the air duct cabin with the environment cabin are formed between the air duct cabin and the environment cabin. An inlet and an outlet of the heat conduction oil pipeline are communicated with the oil tank through an oil inlet pipeline and an oil outlet pipeline respectively, the oil tank is sleeved with an oil heating device, the oil heating device is provided with an oil heating device controller, the oil heating device is a vortex hot film heat exchanger, and the refrigeration evaporator and the oil heating device are connected with the refrigeration unit respectively. The high and low temperature test device is reasonable in structural design, after fuel is combusted, fuel gas exchanges heat with heat conduction oil in the heat exchanger, and compared with an electric heating mode, the high and low temperature test device is good in safety, high in heating efficiency and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental test equipment, in particular to a high and low temperature test device using a thermal oil heating system, in particular to a high and low temperature test device with high heating efficiency, long service life, good circulation effect and better safety. Background Art

[0002] High and low temperature test equipment is an essential test equipment in the fields of aviation, automobiles, home appliances, scientific research, etc. It is used to test and determine the parameters and performance of electrical, electronic and other products and materials after high temperature, low temperature, or constant temperature environment changes. It mainly uses electric heating wires and refrigeration compressors to complete the heating and cooling of the environmental chamber. It uses electric heating wires as heating equipment, which brings the following defects: 1) The heating area of ​​the heating wire is small and easy to be damaged; 2) The heating temperature of the heating wire is not high; 3) The heating wire bracket is inconvenient to install, which is easy to burn people and poses a safety hazard; 4) The heating loss of the heating wire is large and the temperature is difficult to control.

[0003] Therefore, it is of great practical significance to develop a high and low temperature test device with high heating efficiency, long service life and better safety. Utility Model Content

[0004] Due to the above-mentioned defects in the prior art, the utility model provides a high and low temperature testing device with high heating efficiency, long service life and better safety, so as to solve the problems of poor durability, general heating efficiency, potential safety hazards, high energy consumption and low control accuracy of the current high and low temperature testing device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high and low temperature test device using a thermal oil heating system, comprising environmental equipment;

[0007] The housing of the environmental equipment is provided with an air duct cabin and an environmental cabin adjacent to each other, the air duct cabin is provided with a circulating air system, the circulating air system includes a circulating fan, a heat transfer oil pipeline and a refrigeration evaporator, the circulating fan is installed on the top of the air duct cabin, the circulating fan discharges air toward the heat transfer oil pipeline, the refrigeration evaporator is installed on the side of the heat transfer oil pipeline away from the circulating fan, and an air inlet and outlet hole connecting the air duct cabin and the environmental cabin are provided between the air duct cabin and the environmental cabin;

[0008] The inlet and outlet of the heat transfer oil pipeline are connected to the oil tank through an oil inlet pipeline and an oil outlet pipeline respectively. An oil heating device is mounted on the outside of the oil tank. The oil heating device is provided with an oil heating device controller. The oil heating device is an eddy current heat film heat exchanger. The refrigeration evaporator and the oil heating device are connected to the refrigeration unit respectively.

[0009] The controller of the above-mentioned oil heating device can adopt PID automatic temperature control mode. This type of temperature control has high temperature control accuracy, which can reach ±1°C. It can realize automatic control and control the steam (i.e. boiler gas supply) feed amount according to the inlet and outlet temperature of the oil and the oil pouring flow rate. The oil heating device can also be set with multiple functions such as jam alarm, oil shortage alarm, high temperature alarm, heating pipe protection, etc. to ensure the safe operation of the device. The oil inlet and outlet pipelines can adopt carbon steel formed pipes, which can reduce carbon deposition of heat transfer oil, reduce pipe loss and prolong service life.

[0010] The thermal oil heating system of the utility model has a reasonable structural design and utilizes thermal oil for heat exchange. The heat source of the thermal oil heating system completes heat exchange through an eddy current heat film heat exchanger. Under the condition of equal heat exchange area, the external dimensions of the eddy current heat film heat exchanger are only about one half of the external dimensions of the U-tube heat exchanger, and the structure is compact. Coal, heavy oil, light oil, combustible gas and other combustible materials are used as fuel, and the combustion gas exchanges heat with the thermal oil in the eddy current heat film heat exchanger. Compared with electric heating, the system is safer, heats more gently and has less impact on oil quality, has high heating efficiency and better durability (long service life, corrosion resistance, high temperature resistance, high pressure resistance, anti-scaling function, and the oil circulation system can greatly improve the overall performance of the heat exchanger), and has good application prospects.

[0011] As the preferred technical solution:

[0012] In the high and low temperature test device using the thermal oil heating system as described above, a thermal oil pump is installed on the oil outlet pipeline. The thermal oil circulates in the oil circuit under the action of the thermal oil pump, so that the oil will not be locally high temperature or carbonized, ensuring the oil quality and the heat transfer efficiency of the heater, while avoiding repeated heating of the oil in the tank, ensuring the color of the oil, reducing the cost of oil treatment, and improving the oil circulation effect. The thermal oil pump can use a high temperature resistant oil pump, and of course it is best to use an oil pump with high head and large flow.

[0013] In the high and low temperature test device using the thermal oil heating system as described above, an oil inlet pipeline simulation valve is installed on the oil inlet pipeline, and the oil product can be quantitatively heated by using the oil inlet pipeline simulation valve.

[0014] In the high and low temperature test device using a thermal oil heating system as described above, an environmental chamber door is provided on the environmental chamber and the environmental chamber door is located away from the side of the air duct chamber.

[0015] In the high and low temperature test device using the thermal oil heating system as described above, the oil heating device and the refrigeration unit are installed on an external device.

[0016] In the high and low temperature test device using the thermal oil heating system as described above, a plurality of external device feet are provided at the bottom of the external device.

[0017] The high and low temperature test device using the thermal oil heating system as described above, wherein the oil heating device is connected to a coal-fired boiler, a thermal oil gas boiler or an oil-fired boiler. Direct combustion heating is adopted and then heat is exchanged with the thermal oil by a heat exchanger, which has a fast heating speed, high heat transfer efficiency and is not easy to scale.

[0018] The above technical solution is only a feasible technical solution of the present utility model, and the protection scope of the present utility model is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0019] Compared with the prior art, the above utility model has the following advantages or beneficial effects:

[0020] (1) The high and low temperature test device using the thermal oil heating system of the utility model utilizes thermal oil for heat exchange. The heat source of the thermal oil heating system completes the heat exchange through the eddy current heat film heat exchanger. Under the condition of the same heat exchange area, the external dimensions of the eddy current heat film heat exchanger are only about half of the external dimensions of the U-tube heat exchanger, and the structure is compact.

[0021] (2) The high and low temperature test device using the thermal oil heating system of the utility model uses coal, heavy oil, light oil, combustible gas and other combustible materials as fuel. After combustion, the gas exchanges heat with the thermal oil in the eddy current heat film heat exchanger. Compared with electric heating, it is safer, heats more gently, has less impact on the oil quality, and has high heating efficiency;

[0022] (3) Compared with electric heating, the high and low temperature test device of the utility model using the thermal oil heating system has good durability, long service life, corrosion resistance, high temperature resistance, high pressure resistance, and anti-scaling functions. In combination with the oil circulation system, it can greatly improve the overall performance of the heat exchanger and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on illustrating the subject matter of the present invention.

[0024] Figure 1 It is a structural schematic diagram of a high and low temperature test device using a thermal oil heating system of the utility model;

[0025] Figure 2 A three-dimensional schematic diagram of the environmental chamber housing with a circulating fan, a heat transfer oil pipeline and a refrigeration evaporator;

[0026] Among them, 1-circulating fan; 2-thermal oil pipeline; 3-refrigeration evaporator; 4-environmental chamber; 5-environmental chamber door; 6-oil heating device; 7-oil heating device controller; 8-oil outlet pipeline; 9-oil inlet pipeline analog valve; 10-oil inlet pipeline, 11-refrigeration unit, 12-external equipment base. DETAILED DESCRIPTION

[0027] The structure of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0028] Example 1

[0029] A high and low temperature test device using a thermal oil heating system, such as Figure 1 and Figure 2 As shown, it includes environmental equipment and external equipment;

[0030] An air duct cabin and an environmental cabin adjacent to each other are arranged in the housing of the environmental equipment. The air duct cabin is provided with a circulating air system, which includes a circulating air fan 1, a heat transfer oil pipeline 2 and a refrigeration evaporator 3. The circulating air fan 1 is installed on the top of the air duct cabin, and the circulating air fan 1 discharges air toward the heat transfer oil pipeline 2. The refrigeration evaporator 3 is installed on the side of the heat transfer oil pipeline 2 away from the circulating air fan 1. An air inlet and an air outlet hole connecting the air duct cabin and the environmental cabin 4 are arranged between the air duct cabin and the environmental cabin 4. An environmental cabin door 5 is arranged on the environmental cabin 4 and the environmental cabin door 5 is located away from the air duct cabin.

[0031] The inlet and outlet of the heat transfer oil pipeline 2 are connected to the oil tank through the oil inlet pipeline 10 and the oil outlet pipeline 8 respectively. A heat transfer oil pump is installed on the oil outlet pipeline 10, and an oil inlet pipeline analog valve 9 is installed on the oil inlet pipeline 10. An oil heating device 6 is mounted on the outer side of the oil tank. The oil heating device 6 is connected to a coal-fired boiler, a heat transfer oil gas boiler or an oil boiler. The oil heating device 6 is provided with an oil heating device controller 7. The oil heating device 6 is a vortex heat film heat exchanger. The refrigeration evaporator 3 and the oil heating device 6 are respectively connected to the refrigeration unit 11. The oil heating device 6 and the refrigeration unit 11 are installed on an external device, and a plurality of external device bases 12 are provided at the bottom of the external device.

[0032] In summary, the present application provides a high and low temperature test device using a thermal oil heating system, which uses thermal oil for heat exchange. The heat source of the thermal oil heating system completes the heat exchange through a vortex heat film heat exchanger. Under the condition of the same heat exchange area, the external dimensions of the vortex heat film heat exchanger are only about one-half of the external dimensions of the U-tube heat exchanger, and the structure is compact; coal, heavy oil, light oil, combustible gas and other combustible materials are used as fuel, and the combustion gas exchanges heat with the thermal oil in the vortex heat film heat exchanger. Compared with electric heating, it is safer, heats more gently, has less impact on oil quality, and has high heating efficiency; compared with electric heating, it has good durability, long service life, corrosion resistance, high temperature resistance, high pressure resistance, and anti-scaling functions. In conjunction with the oil circulation system, it can greatly improve the overall performance of the heat exchanger and has good application prospects.

[0033] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present utility model, and will not be described in detail here.

[0034] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A high and low temperature test device using a thermal oil heating system, characterized in that: Including environmental equipment; The housing of the environmental equipment is provided with an air duct cabin and an environmental cabin adjacent to each other, the air duct cabin is provided with a circulating air system, the circulating air system includes a circulating fan, a heat transfer oil pipeline and a refrigeration evaporator, the circulating fan is installed on the top of the air duct cabin, the circulating fan discharges air toward the heat transfer oil pipeline, the refrigeration evaporator is installed on the side of the heat transfer oil pipeline away from the circulating fan, and an air inlet and outlet hole connecting the air duct cabin and the environmental cabin are provided between the air duct cabin and the environmental cabin; The inlet and outlet of the heat transfer oil pipeline are connected to the oil tank through an oil inlet pipeline and an oil outlet pipeline respectively. An oil heating device is mounted on the outside of the oil tank. The oil heating device is provided with an oil heating device controller. The oil heating device is an eddy current heat film heat exchanger. The refrigeration evaporator and the oil heating device are connected to the refrigeration unit respectively.

2. A high and low temperature test device using a thermal oil heating system according to claim 1, characterized in that: A heat transfer oil pump is installed on the oil outlet pipeline.

3. A high and low temperature test device using a thermal oil heating system according to claim 1, characterized in that: An oil inlet pipeline analog valve is installed on the oil inlet pipeline.

4. A high and low temperature test device using a thermal oil heating system according to claim 1, characterized in that: The environmental cabin is provided with an environmental cabin door and the environmental cabin door is located away from the side of the air duct cabin.

5. The high and low temperature test device using a thermal oil heating system according to claim 1, characterized in that: The oil heating device and the refrigeration unit are installed on the external equipment.

6. A high and low temperature test device using a thermal oil heating system according to claim 5, characterized in that: A plurality of external device feet are arranged at the bottom of the external device.

7. The high and low temperature test device using a thermal oil heating system according to claim 1, characterized in that: The oil heating device is connected to a coal-fired boiler, a thermal oil gas boiler or an oil-fired boiler.

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