Energy-saving exhaust structure of heat-conducting oil boiler

Abstract

The utility model discloses a conduction oil boiler energy-saving exhaust structure which comprises a backflow pipeline, an oil-gas separator arranged on the backflow pipeline, a liquid outlet pipeline arranged on the lower portion of the oil-gas separator, an expansion tank connected to the upper portion of the oil-gas separator through an expansion pipeline, an overflow pipeline and an oil injection pipeline arranged on the expansion tank, and an emptying pipeline arranged on the expansion tank. The backflow pipeline is provided with a first exhaust pipeline connected to the expansion tank, and the middle of the expansion pipeline is bent and provided with a second exhaust pipeline extending upwards to the first exhaust pipeline or the emptying pipeline. Conduction oil can flow into the expansion tank through the expansion pipeline, water vapor and low-boiling-point substance gas can reach the first exhaust pipeline or the emptying pipeline through the second exhaust pipeline, liquid-phase and gas-phase flow division of media in the expansion pipeline is achieved through the second exhaust pipeline, the cooling burden of the expansion pipeline is reduced, and the service life of the expansion pipeline is prolonged. Therefore, the cooling effect of the expansion pipeline is improved, and the temperature of heat conduction oil serving as a medium in the expansion pipeline can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat transfer oil boiler heating systems, and particularly relates to an energy-saving exhaust structure for a heat transfer oil boiler. Background Art

[0002] In a heat transfer oil boiler heating system, the heat transfer oil can transfer heat energy to a heat-using element after being heated by the heating system and circulated by the circulation system. After being heated, the volume of the heat transfer oil expands. To ensure the stability of the entire system, an expansion tank is configured in the heat transfer oil boiler heating system. The expansion tank is also called a high-level tank or an expansion tank. The expansion tank is connected to the circulation system through an expansion pipeline. The Chinese utility model patent with the patent number CN205279456U discloses a high-level tank cooling system, which makes full use of the installation space through a serpentine or zigzag expansion pipe, effectively increases the pipeline length, and thus can fully dissipate the heat of the heat transfer oil in the expansion pipe, thereby reducing the temperature of the expansion tank. The inventor found that: there is not only heat transfer oil in the expansion pipeline, but also water vapor or low-boiling-point gas. If only the expansion pipeline is used to cool various media in the expansion pipeline, the required length of the expansion pipeline is relatively long, the cost is high, and the installation is time-consuming and laborious. There is an urgent need for an energy-saving exhaust structure for a heat transfer oil boiler that can reduce the temperature of the media in the expansion pipeline. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an energy-saving exhaust structure for a heat transfer oil boiler that can reduce the temperature of the media in the expansion pipeline.

[0004] To solve the above technical problem, the utility model includes a return pipeline, the return pipeline is connected with an oil-gas separator, a liquid outlet pipeline is arranged at the lower part of the oil-gas separator, the upper part of the oil-gas separator is connected with an expansion tank through an expansion pipeline, the expansion pipeline is arranged obliquely upward from the oil-gas separator to the expansion tank, the expansion tank is provided with an overflow pipeline and an oil injection pipeline, a vent pipeline is arranged at the top of the expansion tank, the return pipeline is provided with a first exhaust pipeline connected to the upper part of the expansion tank, the middle part of the expansion pipeline is bent and a second exhaust pipeline extending upward to communicate with the first exhaust pipeline or the vent pipeline is arranged in the middle part.

[0005] Further, the expansion pipeline includes a first connection section connected to the upper part of the oil-gas separator and a second connection section connected to the lower part of the expansion tank. The first connection section is connected to the second connection section through a first bending section recessed upward and a second bending section recessed downward. The first bending section is located above the second bending section, and the second exhaust pipeline is arranged at the upper part of the first bending section.

[0006] Furthermore, the expansion pipeline includes a first connecting section connected to the upper part of the oil-gas separator and a second connecting section connected to the lower part of the expansion tank, the first connecting section is connected to the second connecting section through a first bending section recessed upward and a second bending section recessed downward, the first bending section is located at the lower part of the second bending section, and the second exhaust pipeline is arranged at the upper part of the first bending section.

[0007] Furthermore, the first bending section and the second bending section are arc-shaped.

[0008] After adopting the above structure, the heat transfer oil can flow into the expansion tank through the expansion pipeline, and the water vapor and low-boiling gas can reach the first exhaust pipeline or the venting pipeline through the second exhaust pipeline. The liquid phase and gas phase of the medium in the expansion pipeline are separated by the second exhaust pipeline. The heat transfer oil is naturally cooled through the expansion pipeline, and the water vapor and low-boiling gas are naturally cooled through the second exhaust pipeline, which reduces the cooling burden of the expansion pipeline, thereby improving the cooling effect of the expansion pipeline, and can effectively reduce the temperature of the heat transfer oil as the medium in the expansion pipeline. The expansion pipeline can increase the resistance of the heat transfer oil when it flows in the expansion pipeline through the bent middle part to prevent the heat transfer oil from flowing back. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;

[0010] Figure 2 yes Figure 1 Structural schematic diagram of the expansion pipeline;

[0011] Figure 3 yes Figure 2 Schematic diagram of the structure viewed along line AA;

[0012] Figure 4 It is a structural schematic diagram of the second embodiment of the utility model;

[0013] Figure 5 yes Figure 4 Structural schematic diagram of the expansion pipeline;

[0014] Figure 6 yes Figure 5 Schematic diagram of the structure viewed along line BB;

[0015] In the figure: 1, reflux pipeline; 11, first exhaust pipeline; 2, oil-gas separator; 21, liquid outlet pipeline; 3, expansion pipeline; 31, first connecting section; 32, first bending section; 33, second bending section; 34, second connecting section; 4, expansion tank; 41, overflow pipeline; 42, vent pipeline; 43, oil filling pipeline; 5, second exhaust pipeline. DETAILED DESCRIPTION

[0016] The present utility model will now be further described in detail with reference to the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only schematically showing the basic structure of the present utility model, so they only show the components related to the present utility model. For ease of understanding, Figure 1 The upper part here refers to the upper part of the present utility model, Figure 1 and the lower part here refers to the lower part of the present utility model. Embodiment 1

[0017] Referring to Figures 1 to 3 , the utility model includes a reflux pipeline 1. The reflux pipeline 1 is connected to an oil-gas separator 2. A liquid outlet pipeline 21 is provided at the lower part of the oil-gas separator 2. The upper part of the oil-gas separator 2 is connected to an expansion tank 4 through an expansion pipeline 3. The expansion pipeline 3 is arranged obliquely upward from the oil-gas separator 2 to the expansion tank 4. The expansion tank 4 is provided with an overflow pipeline 41 and an oil injection pipeline 43. A vent pipeline 42 is provided at the top of the expansion tank 4. The reflux pipeline 1 is provided with a first exhaust pipeline 11 connected to the upper part of the expansion tank 4. The middle part of the expansion pipeline 3 is bent, and a second exhaust pipeline 5 extending upward to communicate with the first exhaust pipeline 11 or the vent pipeline 42 is provided in the middle. In this embodiment, the second exhaust pipeline 5 extends upward to the first exhaust pipeline 11. A valve may be provided on the first exhaust pipeline 11. The top end of the second exhaust pipeline 5 is connected to a position of the first exhaust pipeline 11 behind the valve. That is to say, the gas phase in the second exhaust pipeline 5 can reach the expansion tank 4 directly without being affected by the valve after reaching the first exhaust pipeline 11. The expansion pipeline 3 includes a first connection section 31 connected to the upper part of the oil-gas separator 2 and a second connection section 34 connected to the lower part of the expansion tank 4. The first connection section 31 is connected to the second connection section 34 through a first bending section 32 recessed upward and a second bending section 33 recessed downward. The first bending section 32 is located above the second bending section 33. The second exhaust pipeline 5 is provided on the upper part of the first bending section 32. The first bending section 32 and the second bending section 33 are arc-shaped. Embodiment 2

[0018] Referring to Figures 4 to 6 , it provides another embodiment. The basic structure is the same as the above structure. Specifically, in this embodiment, the positions and recessed directions of the first bending section 32 and the second bending section 33 are different, and the connection position of the upper part of the second exhaust pipeline 5 is different. In this embodiment, the second exhaust pipeline 5 extends upward to the vent pipeline 42. A transverse auxiliary pipeline for communicating with the second exhaust pipeline 5 may be provided on the vent pipeline 42. The expansion pipeline 3 includes a first connection section 31 connected to the upper part of the oil-gas separator 2 and a second connection section 34 connected to the lower part of the expansion tank 4. The first connection section 31 is connected to the second connection section 34 through a first bending section 32 recessed upward and a second bending section 33 recessed downward. The first bending section 32 is located below the second bending section 33. The second exhaust pipeline 5 is provided on the upper part of the first bending section 32.

[0019] It should be noted that the first bending section 32 and the second bending section 33 in the first embodiment can be interchangeably arranged and used with the first bending section 32 and the second bending section 33 in the second embodiment, and the second exhaust pipeline 5 in the first embodiment can be interchangeably arranged and used with the second exhaust pipeline 5 in the second embodiment.

[0020] For an energy-saving exhaust structure of a heat-conducting oil boiler provided by the present utility model, the heat-conducting oil can flow into the expansion tank 4 through the expansion pipeline 3, and the water vapor and low-boiling point gas can reach the first exhaust pipeline 11 or the vent pipeline 42 through the second exhaust pipeline 5. The second exhaust pipeline 5 realizes the liquid-phase and gas-phase separation of the medium in the expansion pipeline 3. The heat-conducting oil is naturally cooled through the expansion pipeline 3, and the water vapor and low-boiling point gas are naturally cooled through the second exhaust pipeline 5, reducing the cooling burden of the expansion pipeline 3, thereby improving the cooling effect of the expansion pipeline 3. Therefore, the temperature of the heat-conducting oil as the medium in the expansion pipeline 3 can be effectively reduced. The resistance of the heat-conducting oil flowing in the expansion pipeline 3 can be increased through the bent middle part of the expansion pipeline 3 to prevent the heat-conducting oil from flowing back.

[0021] The above content is only an example and explanation of the structure of the present utility model. Those skilled in the art of the present technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as it does not deviate from the structure of the utility model or exceed the scope defined by the claims of this patent, it shall fall within the protection scope of the present utility model.

Claims

1. A thermal oil boiler energy-saving exhaust structure, characterized by: The invention comprises a return pipeline (1), wherein the return pipeline (1) is connected to an oil-gas separator (2), a liquid outlet pipeline (21) is provided at the lower part of the oil-gas separator (2), and an expansion tank (4) is connected to the upper part of the oil-gas separator (2) via an expansion pipeline (3), wherein the expansion pipeline (3) is arranged to be inclined upward from the oil-gas separator (2) to the expansion tank (4), wherein the expansion tank (4) is provided with an overflow pipeline (41) and an oil filling pipeline (43), and a venting pipeline (42) is provided at the top of the expansion tank (4), wherein the return pipeline (1) is provided with a first exhaust pipeline (11) connected to the upper part of the expansion tank (4), and wherein the middle part of the expansion pipeline (3) is bent and a second exhaust pipeline (5) is provided at the middle part, extending upward to be connected to the first exhaust pipeline (11) or the venting pipeline (42).

2. The energy-saving exhaust structure of the thermal oil boiler according to claim 1 is characterized in that: The expansion pipeline (3) comprises a first connecting section (31) connected to the upper part of the oil-gas separator (2) and a second connecting section (34) connected to the lower part of the expansion tank (4); the first connecting section (31) is connected to the second connecting section (34) via a first bending section (32) recessed upward and a second bending section (33) recessed downward; the first bending section (32) is located above the second bending section (33); and the second exhaust pipeline (5) is arranged above the first bending section (32).

3. The energy-saving exhaust structure of the thermal oil boiler according to claim 1 is characterized in that: The expansion pipeline (3) comprises a first connecting section (31) connected to the upper part of the oil-gas separator (2) and a second connecting section (34) connected to the lower part of the expansion tank (4); the first connecting section (31) is connected to the second connecting section (34) via a first bending section (32) recessed upward and a second bending section (33) recessed downward; the first bending section (32) is located below the second bending section (33); and the second exhaust pipeline (5) is arranged above the first bending section (32).

4. The energy-saving exhaust structure of the thermal oil boiler according to any one of claims 2-3 is characterized in that: The first bending section (32) and the second bending section (33) are arc-shaped.

Images