Unpowered heat energy recovery device

Abstract

The utility model discloses an unpowered heat energy recovery device, which belongs to the technical field of heat energy exchangers and particularly comprises a heat energy exchange tank. The liquid inlet pipe is fixedly arranged at the top of the heat energy exchange tank; the liquid outlet pipe is fixedly arranged at the bottom of the heat energy exchange tank; the overflow pipe is fixedly arranged in the heat energy exchange tank, and the outlet end of the overflow pipe penetrates through the outside of the heat energy exchange tank; the coil pipe support is arranged in the heat energy exchange tank; the spiral coil pipe is detachably connected to the coil pipe support, and the liquid inlet end and the liquid outlet end of the spiral coil pipe are both arranged at the top of the heat energy exchange tank; the device is simple in structure, does not need an additional power device, is low in equipment cost, does not increase the operation cost, avoids the loss of heat energy, and can further increase the temperature and realize zero consumption of natural gas under the condition of increasing the heat exchange area.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and particularly relates to a power-free heat energy recovery device. Background Art

[0002] Due to its simple preparation, low price and excellent performance, aluminum electrolytic capacitors have been widely used in electronic products. Along with the rapid development of the electronics industry, their scale and market demand are constantly increasing. At present, the anodic foil corrosion process of aluminum electrolytic capacitors mostly adopts electrochemical corrosion, including four steps: pretreatment, primary pore formation, secondary pore expansion, and post-treatment.

[0003] During the pore expansion process, it needs to be carried out in an acidic bath solution kept at about 80°C. However, the temperature of the newly supplemented bath solution is only 20 - 25°C. Therefore, during the pore expansion process, a part of the heat energy is released by the chemical reaction itself. The actual temperature rise difference is about 30°C. Converting the natural gas consumed by this heat energy into the output of corrosion foil, it is equivalent to consuming 0.05 cubic meters of natural gas per square meter of corrosion foil. During the discharge process of the waste heat acidic bath solution, the heat energy in the waste heat acidic bath solution is not recovered and utilized, resulting in the loss of heat energy. Summary of the Utility Model

[0004] To solve the problems raised in the above background art, the utility model provides a power-free heat energy recovery device, which has the characteristics of being able to reduce natural gas consumption and operating costs.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A power-free heat energy recovery device, including a heat energy exchange tank;

[0006] A liquid inlet pipe, which is fixedly arranged at the top of the heat energy exchange tank;

[0007] A liquid outlet pipe, which is fixedly arranged at the bottom of the heat energy exchange tank;

[0008] An overflow pipe, which is fixedly arranged inside the heat energy exchange tank, and the outlet end of the overflow pipe penetrates to the outside of the heat energy exchange tank;

[0009] A coil pipe support, which is arranged inside the heat energy exchange tank;

[0010] A spiral coil pipe, which is detachably connected to the coil pipe support, and the liquid inlet end and the liquid outlet end of the spiral coil pipe are both arranged at the top of the heat energy exchange tank.

[0011] Preferably, the spiral coil pipe is a graphite-modified polypropylene pipe.

[0012] Preferably, a heat insulation layer is further arranged on the outer wall of the heat energy exchange tank.

[0013] Preferably, the heat exchange tank includes a tank body and a tank cover. Connecting flanges are fixedly arranged on both the tank body and the tank cover, and the two connecting flanges are detachably connected by first bolts.

[0014] Preferably, the coil pipe support includes a bottom ring, a top ring and clamping plates. The bottom ring and the top ring are arranged at intervals along the height direction of the heat exchange tank, and the bottom ring and the top ring are fixedly connected by a plurality of clamping plates distributed circumferentially for fixing the spiral coil pipe.

[0015] Preferably, each clamping plate includes a fixed rod and a movable rod. The fixed rod and the movable rod are arranged parallel to each other. The movable rod is detachably connected to the fixed rod by a second bolt. Arc-shaped grooves adapted to the spiral coil pipe are arranged on the opposite sides of the movable rod and the fixed rod, and the two arc-shaped grooves cooperate with each other to form a coil groove for fixing the spiral coil pipe.

[0016] Preferably, the top ring is detachably connected to the tank cover by a third bolt.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The structure of the present utility model is simple. The waste heat acidic bath liquid of the production line flows into the heat exchange tank by gravity, and then overflows into the low-level tank through the overflow pipe without the need to provide an additional power device. The equipment has a low cost, does not increase the operation cost, and after the added low-temperature bath liquid exchanges heat energy with the hot liquid in the spiral coil pipe and the heat exchange tank, the heat energy of the waste heat acidic bath liquid can be reasonably utilized, avoiding the loss of heat energy, and the temperature of the low-temperature bath liquid can be increased by 10 - 15 °C, saving about 40% of natural gas consumption. When the heat exchange area is increased, the temperature can be further increased to achieve zero natural gas consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0020] Figure 1 is a schematic three-dimensional structure diagram of Embodiment 1 of the present utility model;

[0021] Figure 2 is a schematic cross-sectional structure diagram of Embodiment 1 of the present utility model;

[0022] Figure 3 is a schematic three-dimensional structure diagram of Embodiment 2 of the present utility model;

[0023] Figure 4 is a schematic cross-sectional structure diagram of Embodiment 2 of the present utility model;

[0024] Figure 5 Schematic diagram of the spiral coil structure in Embodiment 2 of the present utility model;

[0025] Figure 6 Schematic diagram of the coil support structure in Embodiment 2 of the present utility model;

[0026] In the figure: 1, heat energy exchange tank; 11, tank body; 12, tank cover; 13, connecting flange; 2, liquid inlet pipe; 3, liquid outlet pipe; 4, overflow pipe; 5, coil support; 51, bottom ring; 52, top ring; 53, clamping plate; 531, fixed rod; 532, movable rod; 533, arc-shaped groove; 6, spiral coil. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1

[0029] Please refer to Figure 1-2 , this embodiment provides the following technical solutions: A power-free heat energy recovery device, including a heat energy exchange tank 1;

[0030] Liquid inlet pipe 2, the liquid inlet pipe 2 is fixedly arranged at the top of the heat energy exchange tank 1; through the liquid inlet pipe 2, the waste heat acidic bath solution can flow into the heat energy exchange tank 1 automatically.

[0031] Liquid outlet pipe 3, the liquid outlet pipe 3 is fixedly arranged at the bottom of the heat energy exchange tank 1, and through the liquid outlet pipe 3, the waste heat acidic bath solution can be discharged from the heat energy exchange tank 1.

[0032] Overflow pipe 4, the overflow pipe 4 is fixedly arranged inside the heat energy exchange tank 1, and the outlet end of the overflow pipe 4 penetrates to the outside of the heat energy exchange tank 1; through the overflow pipe 4, the waste heat acidic bath solution can overflow from a high position to a low position automatically without providing an additional power device, with low equipment cost and no increase in operating cost.

[0033] The coil pipe support 5 is arranged inside the heat energy exchange tank 1; the spiral coil pipe 6 is detachably connected to the coil pipe support 5. The liquid inlet end and the liquid outlet end of the spiral coil pipe 6 are both arranged at the top of the heat energy exchange tank 1. Through the spiral coil pipe 6, after the added low-temperature bath liquid exchanges heat energy with the hot liquid in the heat energy exchange tank 1, the heat of the waste heat acidic bath liquid can be reasonably utilized, heat energy loss can be avoided, and the temperature of the low-temperature bath liquid can be increased by 10 - 15 °C. About 40% of natural gas consumption can be saved. When the heat exchange area is increased, the temperature can be further increased to achieve zero natural gas consumption.

[0034] The spiral coil pipe 6 is a graphite-modified polypropylene pipe.

[0035] The working principle of the present utility model: The waste heat acidic bath liquid enters into the heat energy exchange tank 1 through the liquid inlet pipe 2 until the liquid level of the waste heat acidic bath liquid in the heat energy exchange tank 1 submerges the overflow pipe 4, which can make the waste heat acidic bath liquid drain out of the heat energy exchange tank 1 by itself and enter into the low-level tank.

[0036] At the same time, the supplemented low-temperature acidic bath liquid enters into the spiral coil pipe 6. As the low-temperature acidic bath liquid entering the spiral coil pipe 6 increases, the low-temperature acidic bath liquid drains out of the heat energy exchange tank 1 from the liquid outlet end of the spiral coil pipe 6. And while the low-temperature acidic bath liquid is flowing in the spiral coil pipe 6, it can exchange heat with the waste heat acidic bath liquid in the heat energy exchange tank 1, so that the low-temperature acidic bath liquid with increased temperature can flow into the high-level tank.

[0037] When the heat energy exchange tank 1 needs to be overhauled, the waste heat acidic bath liquid in the heat energy exchange tank 1 can be drained out of the heat energy exchange tank 1 through the liquid outlet pipe 3.

[0038] Embodiment 2

[0039] Please refer to Figure 3-6 , a heat insulation layer is further arranged on the outer wall of the heat energy exchange tank 1. Through the heat insulation layer, the heat loss of the waste heat acidic bath liquid in the heat energy exchange tank 1 can be increased, so that the heat energy exchange between the waste heat acidic bath liquid and the low-temperature acidic bath liquid can be better carried out.

[0040] The heat energy exchange tank 1 includes a tank body 11 and a tank cover 12. Connecting flanges 13 are fixedly arranged on both the tank body 11 and the tank cover 12. The two connecting flanges 13 are detachably connected by first bolts. Through the connecting flanges 13, the tank body 11 can be covered, so that the coil pipe support 5 and the spiral coil pipe 6 in the tank body 11 can be taken out of the tank body 11.

[0041] In some embodiments, the liquid inlet pipe 2, the liquid outlet pipe 3, the liquid inlet end and the liquid outlet end of the spiral coil pipe 6 are all arranged on the tank cover 12.

[0042] The coil pipe support 5 includes a bottom ring 51, a top ring 52 and a clamping plate 53. The bottom ring 51 and the top ring 52 are arranged at intervals along the height direction of the heat exchange tank 1. The bottom ring 51 and the top ring 52 are fixedly connected by a plurality of clamping plates 53 distributed circumferentially, which are used to fix the spiral coil pipe 6. Through the bottom ring 51, the top ring 52 and the clamping plate 53, it is convenient to install the spiral coil pipe 6 inside the heat exchange tank 1 and improve the stability of the spiral coil pipe 6 in the heat exchange tank 1.

[0043] In some embodiments, the top ring 52, the bottom ring 51 and the clamping plate 53 are all arranged in the area between the overflow pipe 4 and the spiral coil pipe 6.

[0044] The clamping plate 53 includes a fixed rod 531 and a movable rod 532. The fixed rod 531 and the movable rod 532 are arranged parallel to each other. The movable rod 532 is detachably connected to the movable rod 532 by a second bolt. On the opposite sides of the movable rod 532 and the fixed rod 531, arc-shaped grooves 533 adapted to the spiral coil pipe 6 are provided. The two arc-shaped grooves 533 cooperate with each other to form a disk groove for fixing the spiral coil pipe 6. Through the fixed rod 531 and the movable rod 532, the spiral coil pipe 6 can be fixedly clamped on the coil pipe support 5, and the spiral coil pipe 6 on the coil pipe support 5 can be disassembled.

[0045] The top ring 52 is detachably connected to the tank cover 12 by a third bolt. Through the third bolt, the coil pipe support 5 can be disassembled and assembled on the tank cover 12, which is convenient for taking and placing the coil pipe support 5 and the spiral coil pipe 6.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A non-powered heat recovery device, characterized in that: It includes a heat exchange tank (1); A liquid inlet pipe (2), the liquid inlet pipe (2) being fixedly arranged on the top of the heat exchange tank (1); A liquid outlet pipe (3), the liquid outlet pipe (3) being fixedly arranged at the bottom of the heat exchange tank (1); An overflow pipe (4), the overflow pipe (4) being fixedly arranged inside the heat exchange tank (1), and the outlet end of the overflow pipe (4) passing through the outside of the heat exchange tank (1); A coil support (5), the coil support (5) being arranged inside the heat exchange tank (1); A spiral coil (6), the spiral coil (6) being detachably connected to the coil support (5), the liquid inlet end and the liquid outlet end of the spiral coil (6) being both arranged on the top of the heat exchange tank (1).

2. The unpowered heat energy recovery device according to claim 1, characterized in that: The spiral coil (6) is a graphite-modified polypropylene tube.

3. The unpowered heat recovery device according to claim 1, characterized in that: The outer wall of the heat exchange tank (1) is also provided with a heat insulation layer.

4. The unpowered heat energy recovery device according to claim 1, characterized in that: The heat exchange tank (1) comprises a tank body (11) and a tank cover (12), wherein the tank body (11) and the tank cover (12) are both fixedly provided with a connecting flange (13), and the two connecting flanges (13) are detachably connected via a first bolt.

5. The unpowered heat energy recovery device according to claim 4, characterized in that: The coil support (5) comprises a bottom ring (51), a top ring (52) and a clamping plate (53); the bottom ring (51) and the top ring (52) are arranged at intervals along the height direction of the heat exchange tank (1); the bottom ring (51) and the top ring (52) are fixedly connected via a plurality of circumferentially distributed clamping plates (53) for fixing the spiral coil (6).

6. The unpowered heat energy recovery device according to claim 5, characterized in that: The clamping plate (53) comprises a fixed rod (531) and a movable rod (532), wherein the fixed rod (531) and the movable rod (532) are arranged parallel to each other, and the movable rod (532) is detachably connected to the movable rod (532) via a second bolt, and an arc groove (533) adapted to the spiral coil (6) is provided on one side directly facing the movable rod (532) and the fixed rod (531), and the arc grooves (533) on both sides cooperate with each other to form a coil groove for fixing the spiral coil (6).

7. The unpowered heat energy recovery device according to claim 5, characterized in that: The top ring (52) is detachably connected to the tank cover (12) via a third bolt.

Images