Nitrogen sealing equipment for elevated tank of heat conduction oil system

Abstract

The utility model relates to the technical field, and discloses a heat conduction oil system head tank nitrogen sealing device which comprises an expansion tank body, the upper surface of the expansion tank body is communicated with a nitrogen conveying pipeline, the surface of the nitrogen conveying pipeline is provided with a one-way valve, one end of the nitrogen conveying pipeline is communicated with a pressure pump, and the other end of the nitrogen conveying pipeline is provided with a valve. And one end of the pressure pump communicates with a nitrogen tank, and the surface of the expansion tank body is fixedly connected with a supporting frame. Through the arrangement of the oil inlet, heat conduction oil enters the expansion tank body through the oil inlet, the valve can control the flow and the speed of the inlet oil, the pressure pump pumps nitrogen out of the nitrogen tank and conveys the nitrogen into the expansion tank body through the nitrogen conveying pipeline, and the one-way valve ensures that the nitrogen can only flow into the expansion tank body in a one-way mode to prevent backflow. Nitrogen sealing is formed, the effects of isolating air and preventing the heat conduction oil from being oxidized and evaporated are achieved, the nitrogen sealing effectively prevents the heat conduction oil from making contact with the air, and oxidation and evaporation are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat transfer oil systems, in particular to nitrogen sealing equipment for high-level tanks of heat transfer oil systems. Background Art

[0002] Thermal oil system is a heating device that uses thermal oil as the working medium. It is mainly composed of heat source, heat carrier, heating or production equipment, heat pipe and heat exchanger. It is an industrial heat carrier and is widely used in industrial production. Thermal oil system uses the advantages of thermal oil to achieve heat transfer, heating, temperature control and heat preservation of industrial equipment.

[0003] In the prior art, the existing nitrogen sealing equipment usually has a complex structure. In actual use, it is difficult for users to install and maintain the nitrogen sealing equipment, which may increase the production cost of the equipment. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a nitrogen sealing device for a high-level tank of a heat transfer oil system.

[0005] The utility model is implemented by the following technical scheme: a high-level tank nitrogen sealing device of a heat transfer oil system, comprising an expansion tank body, the upper surface of the expansion tank body is connected with a nitrogen delivery pipeline, the surface of the nitrogen delivery pipeline is provided with a one-way valve, one end of the nitrogen delivery pipeline is connected with a pressure pump, one end of the pressure pump is connected with a nitrogen tank, the surface of the expansion tank body is fixedly connected with a support frame, the back side of the expansion tank body is connected with an oil inlet, the surface of the oil inlet is provided with a valve, and the upper surface of the expansion tank body is installed with a safety valve.

[0006] As a further improvement of the above solution, the number of the support frames is two, the two support frames are located on the surface of the expansion tank body and are symmetrically arranged, and the pressure pump is located in front of the expansion tank body.

[0007] As a further improvement of the above solution, the booster pump is located in front of the oil inlet.

[0008] Through the above technical solution, by setting up an expansion tank, the heat transfer oil is allowed to expand when the temperature rises, and a space is provided to accommodate this expansion. The space inside it can be regarded as a high-level tank, which is the main containing component and provides additional storage space for the heat transfer oil.

[0009] As a further improvement of the above scheme, a liquid level gauge is fixedly connected to the inner wall of the expansion tank body, a sealing groove 2 is opened on the upper surface of the expansion tank body, a sealing ring 1 is fixedly connected to the inner wall of the sealing groove 2, the upper surface of the expansion tank body is connected to an exhaust pipe, and a sealing cover is threadedly connected to the surface of the exhaust pipe.

[0010] As a further improvement of the above solution, the inner wall of the pressure pump is fixedly connected to the surface of the liquid level meter, and the sealing cover is located above the second sealing groove.

[0011] Through the above technical solution, an exhaust pipe is provided to help discharge excess gas in the expansion tank, maintain an appropriate pressure level, and ensure the normal operation of the system.

[0012] As a further improvement of the above solution, a sealing groove 1 is provided on the upper surface of the expansion tank body, and a sealing ring 2 is fixedly connected to the inner wall of the sealing groove 1.

[0013] As a further improvement of the above solution, the inner wall of the second sealing ring is fixedly connected to the bottom of the exhaust pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model provides an oil inlet, and the heat transfer oil enters the expansion tank through the oil inlet. The valve can control the flow rate and speed of the oil inlet. The pressure pump draws nitrogen from the nitrogen tank and transports it to the expansion tank through the nitrogen delivery pipeline. The one-way valve ensures that the nitrogen can only flow into the expansion tank in one direction to prevent backflow. After the nitrogen enters the expansion tank, a nitrogen seal is formed to isolate the air and prevent the heat transfer oil from oxidizing and evaporating. The nitrogen seal effectively avoids the contact between the heat transfer oil and the air, reduces oxidation and evaporation, prolongs the service life of the heat transfer oil, and reduces maintenance costs. The inert property of nitrogen enables it to prevent the heat transfer oil from burning or exploding at high temperatures, thereby improving the safety of the system. The safety valve is used to protect the expansion tank. When the pressure exceeds the set value, the safety valve will automatically open to release the pressure to ensure safety. The exhaust pipe is used to discharge the gas in the expansion tank to keep the internal pressure of the tank stable.

[0016] The utility model is provided with a liquid level gauge, through which the liquid level height can be monitored in real time, so as to facilitate timely replenishment or discharge of heat transfer oil and ensure the normal operation of the system; the sealing cover and the sealing ring ensure the sealing of the expansion tank body and prevent nitrogen leakage and air entry; the first sealing ring can seal the connection between the liquid level gauge and the expansion tank body, and the second sealing ring can seal the connection between the expansion tank body and the exhaust pipe, so as to further ensure the sealing of the inside of the expansion tank body; the provision of the safety valve and the sealing device ensures the safe operation of the system under abnormal conditions and protects the safety of personnel and equipment; the device can automatically keep the pressure in the expansion tank body stable, reduces the need for manual operation and monitoring, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;

[0019] Figure 3 This is a schematic diagram of a new type of structure of the sealing groove of this utility model;

[0020] Figure 4 This is a structural schematic diagram of a sealing ring of the utility model;

[0021] Figure 5 It is an exploded schematic diagram of the sealing cover structure of the utility model.

[0022] Description of main symbols:

[0023] 1. Sealing groove 2; 2. Nitrogen tank; 3. Pressure pump; 4. Nitrogen delivery pipeline; 5. One-way valve; 6. Safety valve; 7. Sealing cover; 8. Exhaust pipe; 9. Liquid level gauge; 10. Oil inlet; 11. Valve; 12. Support frame; 13. Sealing ring 1; 14. Sealing ring 2; 15. Sealing groove 1; 16. Sealing groove 2. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] Example:

[0026] Please combine Figure 1-5 , a high-level tank nitrogen sealing device for a heat transfer oil system of the present embodiment comprises an expansion tank body 1, the upper surface of the expansion tank body 1 is connected with a nitrogen delivery pipeline 4, the surface of the nitrogen delivery pipeline 4 is provided with a one-way valve 5, one end of the nitrogen delivery pipeline 4 is connected with a pressure pump 3, one end of the pressure pump 3 is connected with a nitrogen tank 2, the surface of the expansion tank body 1 is fixedly connected with a support frame 12, the back of the expansion tank body 1 is connected with an oil inlet 10, the surface of the oil inlet 10 is provided with a valve 11, and the upper surface of the expansion tank body 1 is installed with a safety valve 6, the heat transfer oil enters the expansion tank body 1 through the oil inlet 10, the valve 11 can control the flow rate and speed of the oil inlet, and the pressure pump 3 takes nitrogen from the nitrogen tank 2 The nitrogen is extracted from the expansion tank 1 and delivered to the expansion tank 1 through the nitrogen delivery pipe 4. The one-way valve 5 ensures that the nitrogen can only flow into the expansion tank 1 in one direction to prevent backflow. After the nitrogen enters the expansion tank 1, a nitrogen seal is formed to isolate the air and prevent the oxidation and evaporation of the heat transfer oil. The nitrogen seal effectively avoids the contact between the heat transfer oil and the air, reduces oxidation and evaporation, extends the service life of the heat transfer oil, and reduces maintenance costs. The inert nature of nitrogen enables it to prevent the heat transfer oil from burning or exploding at high temperatures, thereby improving the safety of the system. The safety valve 6 is used to protect the expansion tank 1. When the pressure exceeds the set value, the safety valve 6 will automatically open to release the pressure to ensure safety.

[0027] There are two support frames 12 , which are located on the surface of the expansion tank 1 and are symmetrically arranged. The pressure pump 3 is located in front of the expansion tank 1 .

[0028] The booster pump 3 is located in front of the oil inlet 10 .

[0029] A liquid level gauge 9 is fixedly connected to the inner wall of the expansion tank body 1, a sealing groove 2 16 is opened on the upper surface of the expansion tank body 1, a sealing ring 13 is fixedly connected to the inner wall of the sealing groove 2 16, an exhaust pipe 8 is connected to the upper surface of the expansion tank body 1, and a sealing cover 7 is threadedly connected to the surface of the exhaust pipe 8. The exhaust pipe 8 is used to discharge the gas in the expansion tank body 1 to keep the internal pressure of the tank body stable. The liquid level height can be monitored in real time through the liquid level gauge 9, which is convenient for timely replenishment or discharge of heat transfer oil to ensure the normal operation of the system. The sealing cover 7 and the sealing rings 13 and 14 ensure the sealing of the expansion tank body 1 to prevent nitrogen leakage and air entry.

[0030] The inner wall of the booster pump 3 is fixedly connected to the surface of the liquid level meter 9 , and the sealing cover 7 is located above the sealing groove 16 .

[0031] A sealing groove 15 is provided on the upper surface of the expansion tank body 1, and a sealing ring 14 is fixedly connected to the inner wall of the sealing groove 15. The sealing ring 14 can seal the connection between the expansion tank body 1 and the exhaust pipe 8, further ensuring the sealing inside the expansion tank body 1.

[0032] The inner wall of the second sealing ring 14 is fixedly connected to the bottom of the exhaust pipe 8 .

[0033] The implementation principle of a nitrogen sealing device for a high-level tank of a heat transfer oil system in the embodiment of the present application is as follows: the heat transfer oil enters the expansion tank body 1 through the oil inlet 10, the valve 11 can control the flow rate and speed of the oil inlet, the booster pump 3 extracts nitrogen from the nitrogen tank 2 and delivers it to the expansion tank body 1 through the nitrogen delivery pipe 4, the one-way valve 5 ensures that nitrogen can only flow into the expansion tank body 1 in one direction to prevent backflow, and after the nitrogen enters the expansion tank body 1, a nitrogen seal is formed to isolate the air and prevent the heat transfer oil from oxidizing and evaporating. The nitrogen seal effectively avoids the contact between the heat transfer oil and the air, reduces oxidation and evaporation, extends the service life of the heat transfer oil, and reduces maintenance costs. The inert nature of nitrogen enables it to prevent the heat transfer oil from burning or exploding at high temperatures, thereby improving the safety of the system. The safety valve 6 is used to protect the expansion tank body 1. When the pressure exceeds the set value, the safety valve 6 will automatically Open, release pressure, ensure safety, the exhaust pipe 8 is used to discharge the gas in the expansion tank body 1 and keep the internal pressure of the tank body stable. The liquid level height can be monitored in real time through the liquid level gauge 9, which is convenient for timely replenishment or discharge of heat transfer oil to ensure the normal operation of the system. The sealing cover 7 and the sealing rings 13 and 14 ensure the sealing of the expansion tank body 1 to prevent nitrogen leakage and air entry. The sealing ring 13 can seal the connection between the liquid level gauge 9 and the expansion tank body 1, and the sealing ring 2 14 can seal the connection between the expansion tank body 1 and the exhaust pipe 8, further ensuring the sealing inside the expansion tank body 1. The setting of the safety valve 6 and the sealing device ensures the safe operation of the system under abnormal conditions and protects the safety of personnel and equipment. The equipment can automatically keep the pressure in the expansion tank body 1 stable, reduce the need for manual operation and monitoring, and improve production efficiency.

[0034] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A nitrogen sealing device for a high-level tank in a thermal oil system, characterized in that: The invention comprises an expansion tank body (1), the upper surface of the expansion tank body (1) is connected to a nitrogen delivery pipeline (4), the surface of the nitrogen delivery pipeline (4) is provided with a one-way valve (5), one end of the nitrogen delivery pipeline (4) is connected to a pressure pump (3), one end of the pressure pump (3) is connected to a nitrogen tank (2), the surface of the expansion tank body (1) is fixedly connected to a support frame (12), the back side of the expansion tank body (1) is connected to an oil inlet (10), the surface of the oil inlet (10) is provided with a valve (11), and the upper surface of the expansion tank body (1) is installed with a safety valve (6).

2. A nitrogen sealing device for a high-level tank of a thermal oil system according to claim 1, characterized in that: The number of the support frames (12) is two, and the two support frames (12) are located on the surface of the expansion tank body (1) and are symmetrically arranged, and the pressure pump (3) is located in front of the expansion tank body (1).

3. A nitrogen sealing device for a high-level tank of a thermal oil system according to claim 1, characterized in that: The booster pump (3) is located in front of the oil inlet (10).

4. A nitrogen sealing device for a high-level tank of a thermal oil system according to claim 1, characterized in that: The inner wall of the expansion tank body (1) is fixedly connected to a liquid level meter (9), the upper surface of the expansion tank body (1) is provided with a sealing groove 2 (16), the inner wall of the sealing groove 2 (16) is fixedly connected to a sealing ring 1 (13), the upper surface of the expansion tank body (1) is connected to an exhaust pipe (8), and the surface of the exhaust pipe (8) is threadedly connected to a sealing cover (7).

5. A nitrogen sealing device for a high-level tank of a heat transfer oil system according to claim 4, characterized in that: The inner wall of the booster pump (3) is fixedly connected to the surface of the liquid level meter (9), and the sealing cover (7) is located above the second sealing groove (16).

6. A nitrogen sealing device for a high-level tank of a heat transfer oil system according to claim 5, characterized in that: A sealing groove 1 (15) is provided on the upper surface of the expansion tank body (1), and a sealing ring 2 (14) is fixedly connected to the inner wall of the sealing groove 1 (15).

7. A nitrogen sealing device for a high-level tank in a heat transfer oil system according to claim 6, characterized in that: The inner wall of the second sealing ring (14) is fixedly connected to the bottom of the exhaust pipe (8).

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