Anti-corrosion device for cut metal steel pipe based on waste heat utilization

Abstract

The utility model discloses an anti-corrosion device for a cut metal steel pipe based on waste heat utilization, which relates to the technical field of energy utilization and comprises a paraffin heat preservation structure, the lower bottom surface of the paraffin heat preservation structure is attached to a pipeline, and the upper surface of the paraffin heat preservation structure is attached to a metal gasket. The upper surface of the metal gasket is attached to the hot end of the semiconductor thermoelectric power generation piece, the cold end of the semiconductor thermoelectric power generation piece is further attached to the metal heat conduction piece, the other end of the metal heat conduction piece is combined with the metal heat pipe, and the metal heat pipe is combined with the heat dissipation fins. A circuit is directly connected between the semiconductor thermoelectric power generation sheet and the pipeline; under the condition that the pipeline begins to be cut, the surface temperature of the pipeline is conducted to the hot end of the semiconductor thermoelectric power generation sheet through the metal gasket and forms a temperature difference with the surface of the cold end, so that heat energy is converted into electric energy to form corresponding current and voltage in a circuit, and the corrosion prevention effect of a cathode protection method is achieved on the pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of energy utilization, and in particular to an anti-corrosion device for metal steel pipes after cutting based on waste heat utilization. Background Art

[0002] With the development of science and technology, more and more metals are used in various aspects of production and life. However, the metal corrosion problem that follows is becoming more and more worthy of attention. Metal corrosion has caused huge economic losses to the national economy, and even brought about catastrophic accidents, wasted precious resources and energy, and polluted the environment. According to relevant data, the annual losses caused by pipeline corrosion in various countries around the world are about US$2 billion in the United States, about US$1.7 billion in the United Kingdom, and US$3.3 billion each in Germany and Japan.

[0003] During the pipe cutting process, especially when using laser cutting, heat up to 2000 degrees Celsius may be generated. This high temperature will quickly decompose the oxide on the metal surface, exposing the fresh metal surface, increasing the chance of contact with oxygen, and the high temperature environment will accelerate the oxidation process of the metal; at the same time, many metal surfaces have a naturally formed protective oxide layer, but during the cutting process, this protective layer may be destroyed, exposing the metal surface directly to the external environment, increasing the risk of corrosion. These factors cause a large amount of rust to quickly form on the surface of the metal pipe after cutting. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-corrosion device for metal steel pipes after cutting based on waste heat utilization. Based on the Seebeck effect, the heat generated when cutting the steel pipe is used to generate electricity, which plays a role in cathodic protection. Through reasonable design, it can not only realize the utilization of thermal energy and improve the energy utilization efficiency, but also realize the anti-corrosion of metal pipes and facilitate maintenance.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] An anti-corrosion device for metal steel pipes after cutting based on waste heat utilization, including a paraffin insulation structure, the lower bottom surface of the paraffin insulation structure is attached to the pipeline, the upper surface is attached to the metal gasket, the upper surface of the metal gasket is attached to the hot end of the semiconductor thermoelectric power generation sheet, the cold end of the semiconductor thermoelectric power generation sheet is also attached to the metal heat conductive sheet, the other end of the metal heat conductive sheet is combined with a metal heat pipe, and the metal heat pipe is combined with a heat dissipation fin. A circuit is directly connected between the semiconductor thermoelectric power generation sheet and the pipeline; when the pipeline begins to be cut, the surface temperature of the pipeline is conducted to the hot end of the semiconductor thermoelectric power generation sheet through the metal gasket, and a temperature difference is formed with the cold end surface, thereby converting thermal energy into electrical energy to form a corresponding current and voltage in the circuit, which plays a role in anti-corrosion of the pipeline by cathodic protection.

[0007] As a further solution of the utility model: the sides of the semiconductor temperature difference power generation sheet are surrounded by heat insulation material, and one side of the heat insulation material is in contact with the upper bottom surface of the metal gasket.

[0008] As a further solution of the utility model: the paraffin insulation structure and the metal gasket, the heat insulating material and the metal heat conductive sheet are connected by bolts, and the metal heat conductive sheet and the metal heat pipe are fixed by an embedded structure.

[0009] As a further solution of the utility model: the semiconductor temperature difference power generation sheet is one sheet, and the metal heat pipes are two sheets.

[0010] As a further solution of the utility model: the semiconductor temperature difference power generation sheet is a square sheet structure, and its size is the same as the size of the cavity formed inside after the metal heat conductive sheet and the heat insulating material are combined.

[0011] As a further solution of the utility model: the heat dissipation ribs are aluminum heat dissipation ribs; the metal heat pipe is a copper heat pipe, and the heat transfer fluid in the heat pipe is pentane; the metal gasket is a copper gasket; the metal heat conductive sheet is a copper heat conductive sheet; the outer layer of the paraffin insulation structure is a high-temperature resistant plastic soft glue, and the paraffin wrapped inside is hard wax.

[0012] As a further solution of the utility model: one side of the metal gasket includes two openings whose size is slightly larger than the size of the metal aluminum tube, and the openings are combined with bolts.

[0013] As a further solution of the utility model: the metal gasket can be moved up and down on the metal aluminum tube through the opening, and the bolts can be tightened to fix it.

[0014] As a further solution of the utility model: the semiconductor temperature difference power generation sheet is connected to the circuit board by electric welding.

[0015] Beneficial effects of the utility model:

[0016] The heat conduction of the pipe during pipe cutting is used to generate electricity by temperature difference, thereby supplying power to the pipe surface, realizing direct anti-corrosion of the pipe without the need for external power supply or other anti-corrosion measures. At the same time, the self-powered method avoids maintenance problems such as battery replacement compared to the externally powered cathodic protection method. Since the device recycles waste heat, it conforms to the concept of green development and has a protective effect on the environment. At the same time, compared with the manual grinding method, it avoids the waste of manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1It is an isometric structural schematic diagram of the utility model.

[0019] Figure 2 It is an isometric structural schematic diagram of a semiconductor temperature difference power generation device.

[0020] Figure 3 yes Figure 2 Front view of .

[0021] Figure 4 yes Figure 3 AA section view.

[0022] Figure 5 yes Figure 3 BB cross-sectional view.

[0023] Figure 6 It is an isometric structural diagram of the sliding device.

[0024] Figure 7 yes Figure 6 Rear view of.

[0025] Figure 8 yes Figure 7 BB cross-section view

[0026] Fig. 9 is a simplified circuit diagram.

[0027] In the figure: 1. Paraffin insulation structure; 2. Metal gasket; 3. Semiconductor temperature difference power generation sheet; 4. Thermal insulation material; 5. Metal thermal conductive sheet; 6. Metal heat pipe; 7. Heat dissipation ribs; 8. Circuit board; 9. Pipeline; 10. Auxiliary anode; 11. Bolt; 12. Metal aluminum tube; 13. Metal clip; 14. Metal base. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1 - Figure 5As shown, the utility model is an anti-corrosion device for metal steel pipes after cutting based on waste heat utilization, including a paraffin insulation structure 1, the lower bottom surface of the paraffin insulation structure 1 is in contact with the pipeline 9, and the upper surface is in contact with the metal gasket 2. The semiconductor temperature difference power generation sheet 3 is surrounded by a heat insulation material 4 on all sides, and one side of the heat insulation material 4 is in contact with the upper bottom surface of the metal gasket 2; the upper surface of the metal gasket 2 is in contact with the hot end of the semiconductor temperature difference power generation sheet 3, and the cold end of the semiconductor temperature difference power generation sheet 3 is also in contact with a metal heat conductive sheet 5, and the other end of the metal heat conductive sheet 5 is combined with a metal heat pipe 6, and the metal heat pipe 6 is combined with a heat dissipation fin 7. The model of the semiconductor temperature difference power generation sheet 3 is SP1848-27145.

[0030] When the pipe 9 is cut and generates heat, the temperature difference power generation device converts the heat of the pipe 9 into electrical energy and transmits it to the surface of the pipe 9 through the circuit, playing the role of anti-corrosion by the cathodic protection method. The utility model is based on the principle of semiconductor temperature difference power generation and utilizes the heat conduction of the pipe during cutting to generate electricity and supply the pipe 9, thereby realizing the use of waste heat of the heating pipe 9 for anti-corrosion and reducing the cost of anti-corrosion of the heating pipe.

[0031] The paraffin insulation structure 1 and the metal gasket 2, the heat insulating material 4 and the metal heat conducting sheet 5 are connected by bolts 11, and the metal heat conducting sheet 5 and the metal heat pipe 6 are fixed by an embedded structure.

[0032] The semiconductor temperature difference power generation sheet 3 is one sheet, and the metal heat pipes 6 are two sheets.

[0033] The semiconductor thermoelectric power generation sheet 3 is a square sheet structure, and its size is the same as the size of the cavity formed inside after the metal heat conductive sheet 5 and the heat insulating material 4 are combined.

[0034] The heat dissipation ribs 7 are aluminum heat dissipation ribs; the metal heat pipe 6 is a copper heat pipe, and the heat transfer fluid in the heat pipe is pentane; the metal gasket 2 is a copper gasket; the metal heat conductive sheet 5 is a copper heat conductive sheet; the outer layer of the paraffin insulation structure 1 is a high-temperature resistant plastic soft glue, and the paraffin wrapped inside is hard wax.

[0035] like Figure 6 - Figure 8 As shown, one side of the metal gasket 2 includes two openings whose size is slightly larger than the size of the metal aluminum tube 12 , and the openings are combined with the bolts 11 .

[0036] The metal gasket 2 can move up and down on the metal aluminum tube 12 through the opening, and the bolts 11 can be tightened to fix the metal aluminum tube 12, and the metal aluminum tube 12 is installed on the metal base 14.

[0037] like Fig. 9As shown in the figure, a DC-DC boost circuit is shown, where the semiconductor temperature difference power generation chip 3 is connected to the input end of the circuit. The switch is first controlled to close to the left, and the inductor accumulates energy by receiving current. Then the switch is controlled to close to the right, and the additional energy from the inductor increases the voltage, thereby opening the path through the diode. At this time, the capacitor accumulates energy, and part of the energy flows to the output end. The switch is controlled to close to the left again, and the inductor transfers the charge to the consumption circuit and accumulates energy again. At the same time, the output end receives energy from the capacitor. Thus, the output voltage increases.

[0038] The switch is controlled by a PWM signal.

[0039] The semiconductor thermoelectric chip 3 is connected to the circuit board 8 by welding, and the wire is also connected to the circuit board 8, the auxiliary anode 10 and the metal clip 13 by welding. When the thermoelectric device is working, the metal clip 13 clamps one end of the pipe 9 for connection.

[0040] Working principle: When the pipe 9 is cut, the metal gasket 2 transfers heat to the hot end of the semiconductor thermoelectric power generation sheet 3, and the semiconductor thermoelectric power generation sheet 3 converts heat energy into electrical energy and provides it to the circuit board 8. The circuit board 8 adjusts the voltage to the required voltage through the circuit, and connects the circuit board 8 with the metal clip 13 and the auxiliary anode 10 through a wire. At the same time, the metal heat pipe 6 transfers the heat from the cold end of the semiconductor thermoelectric power generation sheet 3 to the heat dissipation rib 7, thereby increasing the temperature difference between the hot end and the cold end of the semiconductor thermoelectric power generation sheet 3 and improving the efficiency of energy conversion.

[0041] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A corrosion protection device for metal steel pipes after cutting based on waste heat utilization, characterized in that: The invention comprises a paraffin thermal insulation structure (1), wherein the bottom surface of the paraffin thermal insulation structure (1) is bonded to a pipe (9), and the upper surface is bonded to a metal gasket (2), the upper surface of the metal gasket (2) is bonded to the hot end of a semiconductor temperature difference power generation sheet (3), the cold end of the semiconductor temperature difference power generation sheet (3) is also bonded to a metal heat conductive sheet (5), the other end of the metal heat conductive sheet (5) is combined with a metal heat pipe (6), and the metal heat pipe (6) is combined with a heat dissipation fin (7).

2. According to claim 1, a corrosion protection device for metal steel pipes after cutting based on waste heat utilization is characterized in that: The sides of the semiconductor thermoelectric power generation sheet (3) are surrounded by a heat insulating material (4), and one side of the heat insulating material (4) is in contact with the upper bottom surface of the metal gasket (2).

3. According to claim 1, a corrosion protection device for metal steel pipes after cutting based on waste heat utilization is characterized in that: The paraffin thermal insulation structure (1) and the metal gasket (2), the thermal insulation material (4) and the metal thermal conductive sheet (5) are connected via bolts (11), and the metal thermal conductive sheet (5) and the metal heat pipe (6) are fixed via an embedded structure.

4. According to claim 1, a corrosion protection device for metal steel pipes after cutting based on waste heat utilization is characterized in that: The semiconductor temperature difference power generation sheet (3) is one sheet, and the metal heat pipes (6) are two sheets.

5. According to claim 2, a corrosion protection device for metal steel pipes after cutting based on waste heat utilization is characterized in that: The semiconductor temperature difference power generation sheet (3) is a square sheet structure, and its size is the same as the size of the cavity formed inside after the metal heat conductive sheet (5) and the heat insulating material (4) are combined.

6. The anti-corrosion device for metal steel pipes after cutting based on waste heat utilization according to claim 1 is characterized in that: The heat dissipation fins (7) are aluminum heat dissipation fins; the metal heat pipe (6) is a copper heat pipe, and the heat transfer fluid in the heat pipe is pentane; the metal gasket (2) is a copper gasket; the metal heat conductive sheet (5) is a copper heat conductive sheet; the outer layer of the paraffin insulation structure (1) is a high-temperature resistant plastic soft glue, and the paraffin wrapped inside is hard wax.

7. The anti-corrosion device for metal steel pipes after cutting based on waste heat utilization according to claim 1 is characterized in that: One side of the metal gasket (2) includes two openings whose size is larger than that of the metal aluminum tube (12), and the openings are combined with the bolts (11).

8. The anti-corrosion device for metal steel pipes after cutting based on waste heat utilization according to claim 1 is characterized in that: The metal gasket (2) can move up and down on the metal aluminum tube (12) through the opening, and the bolt (11) can be tightened to fix it.

9. The anti-corrosion device for metal steel pipes after cutting based on waste heat utilization according to claim 1 is characterized in that: The semiconductor temperature difference power generation chip (3) is connected to the circuit board (8) by means of electric welding.

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