A thermal oil heater

Abstract

This utility model provides a thermal oil heater, including a frame, a combustion chamber, and a high-level oil tank. A heat exchanger is installed between the high-level oil tank and the combustion chamber. An oil supply circulation device is installed adjacent to the blower. The oil supply circulation device is connected to an oil-gas separator. The oil-gas separator is connected to a thermal oil inlet valve through an oil inlet pipe. A balance pipe is installed between the oil-gas separator and the high-level oil tank. A low-level oil storage tank is installed between the high-level oil tank and the oil supply circulation device. A return oil pipe is installed between the oil-gas separator and the low-level oil storage tank. The oil supply circulation device is connected to an oil delivery pipe. A thermal oil outlet valve is installed in the combustion chamber. The oil-gas separator is connected to the thermal oil inlet valve, the high-level oil tank, the low-level oil storage tank, and the oil supply circulation device. The balance pipe ensures pressure stability, and the return oil pipe ensures gas separation and return. Through an overflow and recovery structure, the oil can safely flow into the low-level oil storage tank during thermal expansion, preventing it from spraying out from the exhaust port. During cooling and contraction, the oil in the low-level oil storage tank can be automatically replenished, realizing automated oil replenishment.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment, and more particularly to a thermal oil heater. Background Technology

[0002] A thermal oil heating system is an industrial device that uses thermal oil as a heat transfer medium to provide stable, high-temperature heat energy. It is widely used in many fields such as chemical industry, textile industry, and food processing. Traditional thermal oil systems usually consist of components such as combustion chamber, heat exchanger, high-level oil tank, oil supply pump, and oil-gas separator, which are arranged separately and connected by a complex pipeline network.

[0003] Currently, traditional high-level oil tank overflow management has shortcomings. When the heat transfer oil in the system expands due to heat, it may overflow from the exhaust port of the high-level oil tank, causing oil waste and environmental pollution, and posing safety hazards. When the system cools and contracts, external intervention is required to replenish the oil, resulting in a low degree of automation. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a thermal oil heater, which solves the technical problems of the traditional high-level oil tank overflow management, which is that when the thermal oil in the system is heated and expands, it may overflow from the exhaust port of the high-level oil tank, causing oil waste and environmental pollution, and posing safety hazards; while when the system cools and contracts, external intervention is required to replenish the oil, resulting in a low degree of automation.

[0006] (II) Technical Solution

[0007] The purpose of this utility model is to provide a thermal oil heater, which includes a frame, a combustion chamber, and a high-level oil tank. The combustion chamber is disposed within the frame, and the high-level oil tank is disposed at the upper end of the frame. A heat exchanger is disposed between the high-level oil tank and the combustion chamber. The heat exchanger is connected to a blower. An oil supply circulation device is disposed adjacent to the blower. One end of the oil supply circulation device is connected to an oil-gas separator. The oil-gas separator is provided with an oil inlet pipe, a balance pipe, a return oil pipe, and a pressure oil pipe. The oil-gas separator is connected to a thermal oil inlet valve through the oil inlet pipe. A balance pipe is disposed between the oil-gas separator and the high-level oil tank. A low-level oil storage tank is disposed between the high-level oil tank and the oil supply circulation device. A return oil pipe is disposed between the oil-gas separator and the low-level oil storage tank. The other end of the oil supply circulation device is connected to an oil delivery pipe, which is connected to the combustion chamber. A thermal oil outlet valve is disposed at the end of the combustion chamber.

[0008] Preferably, a connecting pipe is provided at the end of the combustion chamber, a gas supply pipe is provided between the connecting pipe and the heat exchanger, and an ignition transformer is also provided inside the connecting pipe.

[0009] Preferably, a level gauge is provided at the end of the high-level oil tank, a first level valve communicating with the inside of the high-level oil tank is provided at the upper end of the level gauge, and a second level valve communicating with the inside of the high-level oil tank is provided at the lower end of the level gauge.

[0010] Preferably, one end of the heat exchanger is connected to a blower, and the other end of the heat exchanger is connected to a gas supply pipe.

[0011] Preferably, the oil supply circulation device includes a pump body support, a drive motor, a transfer bracket, and a circulation pump. The circulation pump is provided at one end of the pump body support. The circulation pump is connected to a pressure oil pipe and is connected to an oil-gas separator. The oil delivery pipe is provided at the upper end of the circulation pump. The drive motor is provided at the other end of the pump body support. A transfer bracket is provided between the drive motor and the circulation pump.

[0012] Preferably, the heat exchanger is provided with a hot exhaust gas inlet, a hot exhaust gas outlet, an air inlet, and a hot gas outlet, with the hot exhaust gas inlet located on the opposite side of the air inlet and the hot exhaust gas outlet located on the other side of the hot gas outlet.

[0013] Preferably, a separator support is provided at the lower end of the oil-gas separator.

[0014] Preferably, the balance pipe is equipped with an exhaust valve.

[0015] (III) Beneficial Effects

[0016] The oil-gas separator is connected to the heat transfer oil inlet valve, high-level oil tank, low-level oil storage tank, and oil supply circulation device via an oil inlet pipe, balance pipe, return oil pipe, and pressure oil pipe, forming a highly efficient oil circulation and oil-gas treatment network. The balance pipe ensures pressure stability, and the return oil pipe ensures that the oil after heat exchange can effectively separate gas and flow back. By setting up an overflow and recovery structure of "high-level oil tank - low-level oil storage tank", excess oil can safely flow into the low-level oil storage tank during thermal expansion, preventing it from spraying out from the exhaust port, eliminating waste and fire hazards. When the system cools and contracts, the oil in the low-level oil storage tank can be automatically replenished to the system, ensuring oil circuit stability and realizing automated oil replenishment without manual intervention, which greatly improves the safety and reliability of the system. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0018] Figure 1 This is a front view of a thermal oil heater;

[0019] Figure 2 This is a 3D view of the heat exchanger of a thermal oil heater;

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Frame; 2. Combustion chamber; 3. High-level oil tank; 4. Heat exchanger; 41. Hot exhaust gas inlet; 42. Hot exhaust gas outlet; 43. Air inlet; 44. Hot gas outlet; 5. Blower; 6. Oil supply and circulation device; 61. Pump body support; 62. Drive motor; 63. Adapter support; 64. Circulation pump; 7. Oil-gas separator; 71. Oil inlet pipe; 72. Balance pipe; 73. Exhaust valve; 74. Oil return pipe; 75. Pressure oil pipe; 76. Separator support; 8. Heat transfer oil inlet valve; 9. Low-level oil storage tank; 10. Oil delivery pipe; 11. Heat transfer oil outlet valve; 12. Connecting pipe; 13. Air supply pipe; 14. Ignition transformer; 15. Level gauge; 151. First level valve; 152. Second level valve. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0023] The following is in conjunction with the appendix Figures 1 to 2This invention discloses a thermal oil heater, comprising a frame 1, a combustion chamber 2, and a high-level oil tank 3. The combustion chamber 2, located inside the frame 1, includes a combustion cavity and a heating cavity. The combustion cavity is used for combustion of fuel gas to heat the thermal oil passing through the heating cavity. The high-level oil tank 3 is installed on the top of the frame 1 to accommodate the thermal oil that expands in volume due to temperature changes and to stabilize the system pressure. A heat exchanger 4 is installed in the space between the high-level oil tank 3 and the combustion chamber 2. The heat exchanger 4 is connected to a blower 5, which is existing technology. Its air outlet is connected to the air inlet 43 of the heat exchanger 4 to introduce fresh air into the heat exchanger 4. An oil supply circulation device 6 is installed adjacent to the blower 5. The oil supply circulation device 6 is fixedly installed on the frame 1 by a pump body bracket 61. One end of the oil supply circulation device 6 is connected to an oil-gas separator 7 through a pressure oil pipe 75. The oil-gas separator 7 is provided with an oil inlet pipe 71 and a balance pipe 7. 2. The oil return pipe 74 and the pressure oil pipe 75 are provided. The oil-gas separator 7 is connected to the heat transfer oil inlet valve 8 via the oil inlet pipe 71. A balance pipe 72 is installed between the oil-gas separator 7 and the high-level oil tank 3. A low-level oil storage tank 9 is installed between the high-level oil tank 3 and the oil supply circulation device 6. The oil return pipe 74 is installed between the oil-gas separator 7 and the low-level oil storage tank 9. The oil-gas separator 7 is connected to the inlet pipe 71, balance pipe 72, oil return pipe 74, and pressure oil pipe 75 respectively. Connected to the heat transfer oil inlet valve 8, high-level oil tank 3, low-level oil storage tank 9, and oil supply circulation device 6, it forms an efficient oil circuit circulation and oil-gas treatment network. The other end of the oil supply circulation device 6 is connected to the oil delivery pipe 10, which is connected to the combustion chamber 2 to realize the delivery of heat transfer oil. The end of the combustion chamber 2 is equipped with a heat transfer oil outlet valve 11. The heated high-temperature heat transfer oil finally flows out from the heat transfer oil outlet valve 11 at the end of the combustion chamber 2 to supply the user end.

[0024] In a preferred embodiment, a connecting pipe 12 is connected to the end of the combustion chamber 2, and the connecting pipe 12 is connected to the hot gas outlet 44 of the heat exchanger 4 through the gas supply pipe 13; the ignition transformer 14 is installed in the connecting pipe 12 and is used to ignite the gas in the combustion chamber 2; the air supplied by the blower 5 is preheated by the high temperature flue gas in the heat exchanger 4 and becomes hot air, which enters the combustion chamber 2 through the gas supply pipe 13 and mixes with the gas supplied by the gas pipe (not shown) for combustion, which improves efficiency while assisting combustion.

[0025] In a preferred embodiment, a level gauge 15 is installed at the end of the high-level oil tank 3. It is connected to the inside of the high-level oil tank 3 through the upper first level valve 151 and the lower second level valve 152, so that the liquid level in the tank can be observed at any time and maintenance or replacement can be carried out after the valve is closed.

[0026] In a preferred embodiment, one end of the heat exchanger 4 is connected to a blower 5, the air outlet of the blower 5 is connected to the air inlet 43 of the heat exchanger 4, and the other end of the heat exchanger 4 is connected to an air supply pipe 13, which is connected to the hot air outlet 44 of the heat exchanger 4.

[0027] In a preferred embodiment, the oil supply circulation device 6 includes a pump body support 61, a drive motor 62, a transfer bracket 63, and a circulation pump 64. The circulation pump 64 is installed at one end of the pump body support 61. The circulation pump 64 is connected to the pressure oil pipe 75 and communicates with the oil-gas separator 7. The oil-gas separator 7 is connected to the heat transfer oil inlet valve 8 through the oil inlet pipe 71 to perform oil-gas separation. The oil delivery pipe 10 is installed at the upper end of the circulation pump 64 to deliver oil into the combustion chamber 2 through the circulation pump 64. The drive motor 62 is installed at the other end of the pump body support 61. A transfer bracket 63 is installed between the drive motor 62 and the circulation pump 64 to make the connection between the two more stable.

[0028] In a preferred embodiment, the heat exchanger 4 is provided with a hot exhaust gas inlet 41, a hot exhaust gas outlet 42, an air inlet 43, and a hot gas outlet 44. The hot exhaust gas inlet 41 is located on the opposite side of the air inlet 43, and the hot exhaust gas outlet 42 is located on the other side of the hot gas outlet 44. The hot exhaust gas inlet 41 and the hot exhaust gas outlet 42 respectively connect to and draw out the high-temperature flue gas generated by the combustion chamber 2, while the air inlet 43 and the hot gas outlet 44 respectively connect to fresh air and draw out preheated hot air. The heat exchanger 4 uses an independent internal flow channel design (which is prior art) to allow the high-temperature flue gas and cold air to flow and achieve sufficient heat exchange.

[0029] In a preferred embodiment, the bottom of the oil-gas separator 7 is supported and fixed on the frame 1 by a separator bracket 76.

[0030] In a preferred embodiment, an exhaust valve 73 is provided on the balance pipe 72, and the connection between the oil-gas separator 7 and the high-level oil tank 3 is opened and closed by controlling the exhaust valve 73.

[0031] In summary, the oil-gas separator is connected to the heat transfer oil inlet valve, high-level oil tank, low-level oil storage tank, and oil supply circulation device via the oil inlet pipe, balance pipe, return oil pipe, and pressure oil pipe, forming a highly efficient oil circulation and oil-gas treatment network. The balance pipe ensures pressure stability, and the return oil pipe ensures that the oil after heat exchange can effectively separate gas and flow back. By setting up an overflow and recovery structure of "high-level oil tank - low-level oil storage tank," excess oil can safely flow into the low-level oil storage tank during thermal expansion, preventing it from spraying out of the exhaust port, eliminating waste and fire hazards. When the system cools and contracts, the oil in the low-level oil storage tank can be automatically replenished to the system, ensuring oil circuit stability and realizing automated oil replenishment without manual intervention, greatly improving the safety and reliability of the system.

[0032] Although embodiments of the present invention have been shown above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications and variations to the above embodiments, but such modifications are all included within the broad scope of the foregoing disclosure, drawings and claims.

Claims

1. A thermal oil heater, comprising a frame, a combustion chamber, and an elevated oil tank, wherein the combustion chamber is disposed within the frame, the elevated oil tank is disposed at the upper end of the frame, a heat exchanger is disposed between the elevated oil tank and the combustion chamber, a blower is connected to the heat exchanger, and an oil supply circulation device is disposed adjacent to the blower, characterized in that: One end of the oil supply circulation device is connected to an oil-gas separator, which is equipped with an oil inlet pipe, a balance pipe, a return oil pipe, and a pressure oil pipe. The oil-gas separator is connected to a heat transfer oil inlet valve through the oil inlet pipe. A balance pipe is installed between the oil-gas separator and the high-level oil tank. A low-level oil storage tank is installed between the high-level oil tank and the oil supply circulation device. A return oil pipe is installed between the oil-gas separator and the low-level oil storage tank. The other end of the oil supply circulation device is connected to an oil delivery pipe, which is connected to the combustion chamber. A heat transfer oil outlet valve is installed at the end of the combustion chamber.

2. The heat transfer oil heater according to claim 1, characterized in that: The combustion chamber is provided with a connecting pipe at its end, and a gas supply pipe is provided between the connecting pipe and the heat exchanger. An ignition transformer is also provided inside the connecting pipe.

3. The heat transfer oil heater of claim 1, wherein: A level gauge is installed at one end of the high-level oil tank. A first level valve communicating with the inside of the high-level oil tank is installed at the upper end of the level gauge, and a second level valve communicating with the inside of the high-level oil tank is installed at the lower end of the level gauge.

4. The heat transfer oil heater of claim 1, wherein: One end of the heat exchanger is connected to a blower, and the other end of the heat exchanger is connected to a gas supply pipe.

5. The heat transfer oil heater of claim 1, wherein: The oil supply circulation device includes a pump body support, a drive motor, a transfer bracket, and a circulation pump. The circulation pump is installed at one end of the pump body support. The circulation pump is connected to a pressure oil pipe and is connected to an oil-gas separator. The oil delivery pipe is installed at the upper end of the circulation pump. The drive motor is installed at the other end of the pump body support. A transfer bracket is installed between the drive motor and the circulation pump.

6. The heat transfer oil heater of claim 1, wherein: The heat exchanger is provided with a hot exhaust gas inlet, a hot exhaust gas outlet, an air inlet, and a hot gas outlet. The hot exhaust gas inlet is located on the opposite side of the air inlet, and the hot exhaust gas outlet is located on the other side of the hot gas outlet.

7. The heat transfer oil heater of claim 1, wherein: The lower end of the oil-gas separator is equipped with a separator support.

8. The heat transfer oil heater of claim 1, wherein: An exhaust valve is installed on the balance pipe.

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