CN111486661A - High-temperature silicone oil rapid cooling system - Google Patents

Abstract

The invention discloses a high-temperature silicone oil rapid cooling system, which comprises: the circulating cooling liquid exchanges heat with the low-temperature liquid in the heat exchanger firstly, and then flows into the oil tank to exchange heat with high-temperature silicon oil to realize rapid cooling. The invention has wide cooling temperature range and low cooling temperature, and the oil tank is quickly cooled by low-temperature liquid, has high cooling speed, and is economic and energy-saving.

Description

High-temperature silicone oil rapid cooling system

Technical Field

The invention relates to the field of testing machines, in particular to a silicone oil rapid cooling system for a thermal deformation Vicat softening point testing machine.

Background

In the thermal deformation Vicat softening point testing machine, the testing temperature of the silicone oil in the oil tank is up to 300 ℃, and after the test is finished, the silicone oil flows out of the oil tank and is cooled to a normal temperature state, and a long time is needed to wait. This cooling can have a significant effect on the efficiency of the test for users who require large amounts of test data. The experimental equipment in the industry needs to recycle the silicone oil, so that the time is very important, and the time cannot be wasted in the process of waiting for cooling. Therefore, aiming at the prior art, a high-temperature silicone oil cooling system special for a thermal deformation vicat softening point testing machine is urgently needed to be developed, so that the silicone oil is efficiently and quickly cooled, and the experiment efficiency is improved.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a high-temperature silicone oil rapid cooling system.

The technical scheme adopted by the invention for solving the technical problems is as follows: a high-temperature silicone oil rapid cooling system comprises: the circulating cooling liquid exchanges heat with the low-temperature liquid in the heat exchanger firstly, and then flows into the oil tank to exchange heat with high-temperature silicon oil to realize rapid cooling.

Further comprising: the tap water source is connected with the cold liquid tank in parallel, the tap water source is also connected into the heat exchanger cavity, when the oil temperature is higher than 100 ℃, the tap water is firstly used for carrying out heat exchange cooling, and when the oil temperature is between 25 and 100 ℃, the low-temperature liquid is used for carrying out heat exchange.

And a first electromagnetic valve and a second electromagnetic valve are respectively arranged on parallel pipelines of the tap water source and the cold liquid tank connected to the heat exchanger, and the two electromagnetic valves are used for respectively controlling the on-off states of the two cold sources.

And a first one-way valve is arranged on a pipeline connected with a water inlet port of the heat exchanger.

And a second one-way valve is arranged on one side of the heat exchange tube along the circulation direction of the high-temperature pump.

And a water outlet port of the heat exchanger is connected with a waste water tank, and cooling water after heat exchange is discharged into the waste water tank.

The low-temperature liquid is low-temperature water or antifreeze liquid with the temperature lower than 25 ℃.

And a water cooler is connected and installed on the cold liquid tank, and the water in the cold liquid tank is cooled through the water cooler.

Compared with the prior art, the invention has the beneficial effects that:

1. the cooling temperature range is wide, the cooling temperature of conventional equipment on the market generally does not exceed 150 ℃, and the system can cool high-temperature silicone oil with the temperature as high as 300 ℃, and the temperature range capable of being processed is wider.

2. The cooling temperature is low, in south areas, the temperature of tap water in summer can reach about 30 ℃, conventional equipment can not cool high-temperature silicon oil to 25 ℃ required by the standard at all, and the system utilizes 4 ℃ low-temperature water to cool the oil tank, so that the enough temperature difference is kept, and the effect of quick cooling is realized.

3. The cooling rate is fast, and conventional equipment is when using the running water to cool off, and when the difference in temperature of oil temperature and running water was within 25 ℃, the cooling process was very slow, and the time can reach more than 1h, and this system cools down the water of cold liquid incasement in advance through the cold water machine, when waiting the heat exchange efficiency of running water to reduce, switches on low-temperature water again and cools down.

4. The scheme of the system is economical and energy-saving, and the system is cooled by tap water within the range of 100-300 ℃, so that the power consumption is very low.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced, wherein:

fig. 1 is a schematic diagram of the connection principle of the preferred embodiment of the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments. In the preferred embodiments, the terms "upper", "lower", "left", "right", "middle" and "a" are used for clarity of description only, and are not used to limit the scope of the invention, and the relative relationship between the terms and the terms is not changed or modified substantially without changing the technical content of the invention.

Referring to fig. 1, a high-temperature silicone oil rapid cooling system according to a preferred embodiment of the present invention mainly includes: the heat exchange tube in the oil tank 11 is coiled in the liquid cooling box 2, the water pump 3 and the bending, and the low-temperature water of 4 ℃ or so is stored in the liquid cooling box 2, and other temperature values lower than 25 ℃ can be stored, and the low-temperature water in the liquid cooling box 2 is conveyed to the heat exchange tube through the water pump 3, so that heat exchange is rapidly carried out, and high-temperature silicon oil is rapidly cooled.

Further comprising: the heat exchanger 7 is a specific cavity of the heat exchanger, and the water inlet and outlet ports of the heat exchanger are respectively communicated with the cavity. One end of the heat exchange tube is also bent and coiled in the heat exchanger 7, circulating cooling liquid is filled in the heat exchange tube and can be dimethyl silicon oil, a high-temperature pump 8 is arranged on the heat exchange tube, the circulating cooling liquid is circulated between the heat exchanger 7 and the oil tank 11 through the high-temperature pump 8, low-temperature water flowing out through the water pump 3 is connected to a water inlet port of the heat exchanger 7, and a water outlet port of the heat exchanger 7 is connected with the waste water tank 9 through a pipeline. By additionally arranging the heat exchanger 7, low-temperature water does not directly flow into the heat exchange tube, the heat exchange tube is favorable for circulating work, and the low-temperature water used by the heat exchanger 7 is collected through the waste water tank 9.

Further comprising: the tap water source 1, the tap water source 1 and the cold liquid tank 2 are connected in parallel, and the tap water source 1 is also connected to the water inlet port of the heat exchanger 7 through a pipeline. The temperature of tap water is usually defined by the industry to be 25-30 ℃, when the oil temperature is higher than 100 ℃, the tap water can be used for heat exchange cooling, and because the temperature difference is large enough, the rapid cooling can be realized to take away the heat of silicon oil; when the oil temperature is 25-100 ℃, the cooling speed is reduced due to the reduction of the temperature difference with tap water, and at the moment, heat exchange is carried out through low-temperature water at 4 ℃ to keep the effect of rapid cooling.

A tap water source 1 and a cold liquid tank 2 are connected to a parallel pipeline of a heat exchanger 7, a first electromagnetic valve 4 and a second electromagnetic valve 5 are respectively arranged on the parallel pipeline, and the on-off states of two cold sources are respectively controlled by the two electromagnetic valves.

A first check valve 6 is arranged on a pipeline connected with a water inlet port of the heat exchanger 7 to prevent the cooling water entering the heat exchanger 7 from flowing reversely.

And a second one-way valve 10 is arranged on one side of the heat exchange pipe along the circulation direction of the high-temperature pump 8 to prevent the circulating cooling liquid from flowing reversely.

The cold liquid tank 2 is connected with a water cooler, and the water in the cold liquid tank 2 is cooled by the water cooler. Or the low-temperature water is directly replaced by the antifreeze.

For the convenience of understanding the scheme, a concrete implementation method is briefly described:

firstly, after the equipment is started, a water cooler on the equipment is automatically started to cool water in a cold liquid tank, wherein the cooling temperature is controlled to be about 4 ℃, and the cooling time is controlled to be within 15 min;

secondly, starting the test, and raising the temperature of the oil in the oil tank to a specified test temperature which can reach 300 ℃ at most until the test is finished;

and thirdly, after the test is finished, starting a high-temperature silicone oil rapid cooling process:

1. the current oil temperature is measured by a temperature sensor in the oil tank, when the oil temperature is higher than 100 ℃, a first electromagnetic valve P1 is opened, a second electromagnetic valve P2 is closed, tap water flows through the first electromagnetic valve P1 and a first one-way valve, enters a heat exchanger cavity, exchanges heat with circulating cooling liquid in the heat exchanger cavity, and is discharged into a waste water tank;

2. after the process is finished, the high-temperature pump is started, the circulating cooling liquid in the cavity of the heat exchanger is conveyed to the oil tank through the heat exchange tube, the circulating cooling liquid and the high-temperature silicone oil are subjected to heat exchange rapidly, then the circulating cooling liquid returns to the heat exchanger, and the circulating cooling process of tap water can be repeated for multiple times until the temperature of the oil is reduced to be below 100 ℃;

3. monitoring the oil temperature through a temperature sensor in the oil tank, when the oil temperature reaches 100 ℃ or below, opening a second electromagnetic valve 5, closing a first electromagnetic valve, starting a water pump, enabling low-temperature water in a cold liquid tank to flow into a heat exchanger through the water pump, the second electromagnetic valve and a first one-way valve, exchanging heat, and discharging the low-temperature water into a waste water tank; repeating the step 2, wherein the high-temperature pump keeps a starting state in the process, and similarly, the circulating cooling process of the low-temperature water can be repeated for many times until the oil temperature is reduced to the specified temperature;

4. when the oil temperature in the oil tank is cooled to the designated temperature, the high-temperature pump stops running, the two electromagnetic valves are closed, the cooling process is finished, and the next test can be restarted.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention by those skilled in the art are within the technical scope of the present invention without departing from the technical spirit of the present invention.

Claims (8)

1. A high temperature silicon oil rapid cooling system is characterized by comprising: the circulating cooling liquid exchanges heat with the low-temperature liquid in the heat exchanger firstly, and then flows into the oil tank to exchange heat with high-temperature silicon oil to realize rapid cooling.

2. The high-temperature silicone oil rapid cooling system according to claim 1, further comprising: the tap water source is connected with the cold liquid tank in parallel, the tap water source is also connected into the heat exchanger cavity, when the oil temperature is higher than 100 ℃, the tap water is firstly used for carrying out heat exchange cooling, and when the oil temperature is between 25 and 100 ℃, the low-temperature liquid is used for carrying out heat exchange.

3. The high-temperature silicone oil rapid cooling system as claimed in claim 2, wherein a first solenoid valve and a second solenoid valve are respectively arranged on parallel pipelines of the tap water source and the cold liquid tank connected to the heat exchanger, and the on-off states of the two cold sources are respectively controlled by the two solenoid valves.

4. The high-temperature silicon oil rapid cooling system as claimed in claim 1, 2 or 3, wherein a first one-way valve is arranged on a pipeline connected with a water inlet port of the heat exchanger.

5. A high-temperature silicon oil rapid cooling system as claimed in claim 1, 2 or 3, wherein a second one-way valve is arranged on the heat exchange pipe along one side of the circulation direction of the high-temperature pump.

6. A high-temperature silicon oil rapid cooling system as claimed in claim 1, 2 or 3, wherein the water outlet port of the heat exchanger is connected with a wastewater tank, and cooling water after heat exchange is discharged into the wastewater tank.

7. A high-temperature silicone oil rapid cooling system according to claim 1, 2 or 3, characterized in that the low-temperature liquid is low-temperature water or antifreeze liquid with a temperature below 25 ℃.

8. The high-temperature silicon oil rapid cooling system as claimed in claim 1, 2 or 3, wherein a water cooler is connected to the cold liquid tank, and the liquid in the cold liquid tank is cooled by the water cooler.

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