A device for graded utilization of waste heat of heat conducting oil

Abstract

The utility model discloses a kind of heat-conducting oil waste heat graded utilization device, it includes cabinet, in the cabinet from top to bottom sequentially installed with first-stage heat exchange pipe, second-stage heat exchange pipe, third-stage heat exchange pipe and heat-conducting oil pipe, on the first-stage heat exchange pipe, second-stage heat exchange pipe, third-stage heat exchange pipe, all are installed with several fin units;The beneficial effects of the utility model: the utility model designs the graded utilization device of heat-conducting oil waste heat, with the heat-conducting oil of lime kiln combustion beam as heat source, with oil bath heat-conducting oil as heat transfer medium, and design each stage heat exchange pipe in oil bath carries out waste heat recovery, to obtain water of different temperature, according to actual demand application to different positions, to realize waste heat various form utilization, worthy of wide range of use.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat recovery equipment for combustion beams in lime kilns, and in particular to a heat transfer oil waste heat graded utilization device. Background Technology

[0002] The combustion beams of a double-beam lime kiln typically utilize circulating heat transfer oil for cooling to maintain normal operation. The inlet temperature of the heat transfer oil in the combustion beams is generally around 180°C, and the outlet temperature is around 220°C. In existing technologies, the heat transfer oil carries the waste heat from the combustion beams to the outside environment for cooling through air cooling or a fluid heat exchanger before being recycled. This waste heat is not recovered and reused, resulting in resource waste. Therefore, this invention provides a heat transfer oil waste heat staged utilization device. Utility Model Content

[0003] The purpose of this invention is to provide a heat transfer oil waste heat grading and utilization device to solve the technical problem that the waste heat of the combustion beam of lime kiln is not recovered and reused in the prior art.

[0004] The utility model discloses a waste heat utilization device for heat transfer oil, comprising a housing. From top to bottom, a primary heat exchange tube, a secondary heat exchange tube, a tertiary heat exchange tube, and a heat transfer oil pipe are sequentially installed within the housing. Each of the primary, secondary, and tertiary heat exchange tubes has a plurality of finned units installed. The installation density of the finned units on the primary heat exchange tube increases sequentially with the density on the secondary heat exchange tube and the tertiary heat exchange tube. The housing contains an oil bath of heat transfer oil. All the primary, secondary, and tertiary heat exchange tubes and the heat transfer oil pipe are U-shaped. Flow valves are installed on each of the primary, secondary, and tertiary heat exchange tubes and the heat transfer oil pipe.

[0005] Furthermore, the fin unit includes a heat-conducting plate, a through hole is provided at the center of the heat-conducting plate, and a number of triangular clamping plates are evenly distributed along the circumferential direction on the outer edge of the through hole.

[0006] Furthermore, the heat-conducting sheet and the clamping sheet are integrally formed.

[0007] Furthermore, the thickness of the heat-conducting sheet and the clamping sheet is less than 2mm.

[0008] Furthermore, a circulating oil bath pipeline is provided inside the box, and several nozzles are installed on the circulating oil bath pipeline. The nozzles are located above the primary heat exchange tube. The initial end of the circulating oil bath pipeline is connected to the bottom of the box, and a circulating pump is installed on the circulating oil bath pipeline.

[0009] Furthermore, several corrugated fins are fixedly installed on the heat-conducting oil pipe.

[0010] The beneficial effects of this utility model are as follows: This utility model designs a graded utilization device for waste heat of heat transfer oil. It uses the heat transfer oil of the combustion beam of the lime kiln as the heat source and the oil bath heat transfer oil as the heat transfer medium. It designs heat exchange tubes of various levels in the oil bath to recover waste heat, thereby obtaining water at different temperatures. According to actual needs, it can be applied to different locations to realize the utilization of waste heat in multiple forms. It is worth promoting and using on a large scale. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a diagram showing the installation structure of the primary heat exchange tube and heat transfer fin unit.

[0013] Figure 3 This is a diagram demonstrating the installation deformation structure of the heat transfer fin unit.

[0014] In the figure, the components are: box 1, primary heat exchange tube 3, secondary heat exchange tube 4, tertiary heat exchange tube 5, heat transfer oil pipe 6, circulating oil bath pipeline 7, nozzle 8, circulating pump 9, heat transfer plate 10, clamp plate 11, through hole 12, and corrugated plate fin 13. Detailed Implementation

[0015] like Figure 1 As shown, a heat transfer oil waste heat grading and utilization device includes a housing 1. For ease of assembly of internal parts, the housing is designed as a split structure. Inside the housing 1, from top to bottom, a primary heat exchange tube 3, a secondary heat exchange tube 4, a tertiary heat exchange tube 5, and a heat transfer oil pipe 6 are installed sequentially. Several finned units are installed on each of the primary, secondary, and tertiary heat exchange tubes 3 and 4. The installation density of the finned units on the primary heat exchange tube 3, the secondary heat exchange tube 4, and the tertiary heat exchange tube 5 increases sequentially. The housing 1 contains an oil bath of heat transfer oil. All the primary, secondary, and tertiary heat exchange tubes 3, 4, 5, and 6 are U-shaped. Flow valves are installed on each of the primary, secondary, and tertiary heat exchange tubes 3, 4, 5, and 6. The flow valves can control the water flow rate and velocity, thereby indirectly changing the water's heat exchange efficiency to obtain water at different temperatures.

[0016] Specifically, such as Figure 2 and Figure 3As shown, the finned unit includes a heat-conducting plate 10, with a through hole 12 at its center. Several triangular clamping plates 11 are evenly distributed along the circumferential direction on the outer edge of the through hole 12. The heat-conducting plate 10 and the clamping plates 11 are integrally formed, and their thickness is less than 2 mm. When manufacturing the finned unit, a circular heat-conducting plate 10 is first cut, and then a slit is made at the center of the heat-conducting plate 10 to form the clamping plates. 11. When the finned unit is installed on the primary heat exchange tube 3, the secondary heat exchange tube 4, and the tertiary heat exchange tube 5, the clamping plate 11 is pushed open to form a through hole 12. Due to the metal deformation characteristics of the clamping plate 11, the clamping plate 11 tightly clamps the primary heat exchange tube 3, the secondary heat exchange tube 4, and the tertiary heat exchange tube 5. It has a good fixing function and can arrange the installation density of the finned unit according to actual needs, making it more flexible and convenient to use. It also has a detachable function, which is beneficial for later disassembly, cleaning and maintenance.

[0017] To achieve more uniform and reliable heat transfer, the fluidity of the oil bath heat transfer oil should be increased, such as... Figure 1 As shown, a circulating oil bath pipeline 7 is provided inside the housing 1, and several nozzles 8 are installed on the circulating oil bath pipeline 7. The nozzles 8 are located above the primary heat exchange tube 3. The initial end of the circulating oil bath pipeline 7 is connected to the bottom of the housing 1, and a circulating pump 9 is installed on the circulating oil bath pipeline 7. In order to improve the heat transfer performance, several corrugated fins 13 are fixedly installed on the heat transfer oil pipe 6.

[0018] In practical use, such as Figures 1 to 3 As shown, the 220℃ combustion beam heat transfer oil flows in the heat transfer oil pipe 6, thereby heating the oil bath heat transfer oil in the box 1. At the same time, in order to increase the fluidity of the oil bath heat transfer oil in the box 1, the oil bath heat transfer oil is circulated through the circulating oil bath pipeline 7, nozzle 8, and circulating pump 9. The water in the primary heat exchange tube 3, secondary heat exchange tube 4, and tertiary heat exchange tube 5 is heated by the oil bath. By setting the installation density of the finned units and adjusting the flow valve, the outlet water temperature of the primary heat exchange tube 3, secondary heat exchange tube 4, and tertiary heat exchange tube 5 can be controlled, thereby enabling different water use scenarios (such as heating water, bathing water, and water for calcium carbide production process systems).

[0019] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A device for the graded utilization of waste heat from heat transfer oil, characterized in that: It includes a housing (1), in which a primary heat exchange tube (3), a secondary heat exchange tube (4), a tertiary heat exchange tube (5) and a heat transfer oil pipe (6) are installed from top to bottom. Several finned units are installed on the primary heat exchange tube (3), the secondary heat exchange tube (4) and the tertiary heat exchange tube (5). The installation density of the finned units on the primary heat exchange tube (3), the secondary heat exchange tube (4) and the tertiary heat exchange tube (5) increases sequentially. The housing (1) is filled with oil bath heat transfer oil. The primary heat exchange tube (3), the secondary heat exchange tube (4), the tertiary heat exchange tube (5) and the heat transfer oil pipe (6) are all U-shaped. Flow valves are installed on the primary heat exchange tube (3), the secondary heat exchange tube (4), the tertiary heat exchange tube (5) and the heat transfer oil pipe (6).

2. The heat transfer oil waste heat grading and utilization device according to claim 1, characterized in that: The fin unit includes a heat-conducting plate (10), a through hole (12) is provided at the center of the heat-conducting plate (10), and a number of triangular clamping plates (11) are evenly distributed along the circumferential direction on the outer edge of the through hole (12).

3. The heat transfer oil waste heat grading and utilization device according to claim 2, characterized in that: The heat-conducting sheet (10) and the clamping sheet (11) are integrally formed.

4. The heat transfer oil waste heat grading and utilization device according to claim 3, characterized in that: The thickness of the heat-conducting sheet (10) and the clamping sheet (11) is less than 2 mm.

5. The heat transfer oil waste heat grading and utilization device according to claim 1, characterized in that: A circulating oil bath pipeline (7) is provided inside the housing (1). Several nozzles (8) are installed on the circulating oil bath pipeline (7). The nozzles (8) are located above the primary heat exchange tube (3). The initial end of the circulating oil bath pipeline (7) is connected to the bottom of the housing (1). A circulating pump (9) is installed on the circulating oil bath pipeline (7).

6. The heat transfer oil waste heat grading and utilization device according to claim 1, characterized in that: Several corrugated fins (13) are fixedly installed on the heat-conducting oil pipe (6).

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