A lubricating oil pipe cooling device for a gas-steam combined cycle combustion engine

Abstract

The present invention provides a lubricating oil pipe cooling device for a gas-steam combined cycle engine, and belongs to the technical field of gas-steam combined cycle engine cooling. The lubricating oil pipe cooling device for a gas-steam combined cycle engine comprises a first cooling structure and a second cooling structure. The first cooling structure comprises a hollow tube, a sleeve and a cooling member, the first lubricating oil pipe passes through the sleeve and extends to the outside, the second cooling structure comprises a cooling box, a protective member and a driving member, a second lubricating oil pipe is fixed inside the cooling box, a cooling fin is fixed on the surface of the second lubricating oil pipe, and the driving member is installed at the bottom of the cooling box. The present invention improves the cooling effect by continuous cooling and increasing the contact area with the outside during the cooling process, while facilitating the protection of refrigeration components and reducing the influence of dust adhesion on heat dissipation, and at the same time can increase the continuity of cooling and make it more convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of gas - steam combined cycle gas turbine cooling, and more specifically, to a lubricating oil tube - type cooling device for a gas - steam combined cycle gas turbine. Background Art

[0002] As an advanced power generation technology, the gas - steam combined cycle is playing an increasingly important role in the power production industry in China. The gas - steam combined cycle equipment has a large market both at home and abroad, and with the adjustment of the energy structure and the improvement of clean coal utilization technology, the demand will further expand. The occupation of the domestic gas turbine market by foreign large companies also causes the outflow of the country's precious funds. Gas - steam combined cycle power generation units are increasingly being valued and developed in the foreign power industry due to their advantages such as high efficiency, low consumption, fast startup, flexible regulation, high availability, low investment, short construction period, and low environmental pollution.

[0003] Currently, most of the existing lubricating oil tube - type cooling devices for gas - steam combined cycle gas turbines use single - body or single refrigeration devices for cooling. This is likely to result in insufficient cooling and failure to achieve the ideal cooling degree, thus affecting reuse. At the same time, the internal protection effect of the cooling device is relatively poor, which will also have a certain impact on cooling and heat dissipation during long - term use. Therefore, it is necessary to propose a lubricating oil tube - type cooling device for a gas - steam combined cycle gas turbine to solve the above problems. Summary of the Invention

[0004] To make up for the above deficiencies, the present invention provides a lubricating oil tube - type cooling device for a gas - steam combined cycle gas turbine, aiming to improve the problems that most of the existing lubricating oil tube - type cooling devices for gas - steam combined cycle gas turbines use single - body or single refrigeration devices for cooling, which is likely to result in insufficient cooling and failure to achieve the ideal cooling degree, thus affecting reuse, and at the same time, the internal protection effect of the cooling device is relatively poor, which will also have a certain impact on cooling and heat dissipation during long - term use.

[0005] The present invention is implemented as follows:

[0006] The present invention provides a lubricating oil tube - type cooling device for a gas - steam combined cycle gas turbine, comprising a first cooling structure and a second cooling structure.

[0007] The first cooling structure includes a hollow tube, a sleeve, and a cooling member. The hollow tube is fixed inside the sleeve, and a liquid storage cavity is formed between the hollow tube and the sleeve. The cooling member is installed inside the hollow tube. A first lubricating oil pipe is fixed inside the liquid storage cavity, sleeved on the hollow tube, and penetrates through the sleeve and extends to the outside. The second cooling structure includes a cooling box, a protective member, and a driving member. At the upper end inside the cooling box, a first annular plate is fixed. The protective member is installed on the first annular plate through a connecting member. A second lubricating oil pipe is fixed inside the cooling box, and heat dissipation fins are fixed on the surface of the second lubricating oil pipe. The second lubricating oil pipe is communicated with the first lubricating oil pipe through a connecting pipe. The driving member is installed at the bottom of the cooling box.

[0008] In an embodiment of the present invention, a liquid inlet pipe and a pressure relief valve are communicated and fixed to the top surface of the liquid storage cavity, and a sealing cover is threadedly connected to the end of the liquid inlet pipe.

[0009] In an embodiment of the present invention, the cooling member includes a first horizontal plate, a first fan, and a semiconductor refrigeration sheet. The first horizontal plate is fixed to the upper end inside the hollow tube, and a first dust-proof net is fixed between the first horizontal plate and the hollow tube. The semiconductor refrigeration sheet is installed inside the hollow tube.

[0010] In an embodiment of the present invention, the first lubricating oil pipe is spiral, and a first support frame is fixed to the bottom of the sleeve. A first nail hole is formed inside the first support frame.

[0011] In an embodiment of the present invention, the protective member includes a second annular plate. A second dust-proof net is fixed inside the second annular plate, and an activated carbon adsorption sponge is fixed to the bottom surface of the second dust-proof net.

[0012] In an embodiment of the present invention, the connecting member includes a first magnet ring and a second magnet ring. The first magnet ring is fixed to the bottom surface of the second annular plate, the second magnet ring is fixed to the first annular plate, and the first magnet ring and the second magnet ring are adsorbed and fixed.

[0013] In an embodiment of the present invention, a plurality of heat dissipation fins are provided, and the plurality of heat dissipation fins are equidistantly spaced on the second lubricating oil pipe.

[0014] In an embodiment of the present invention, the driving member includes a second horizontal plate and a second fan. The second horizontal plate is fixed to the bottom of the cooling box, and the second fan is installed on the second horizontal plate.

[0015] In an embodiment of the present invention, the second lubricating oil pipe is U-shaped, and the second fans are evenly spaced on the second cross plate.

[0016] In an embodiment of the present invention, second support frames are symmetrically fixed on both sides of the cooling box, and second nail holes are provided inside the second support frames.

[0017] The beneficial effects of the present invention are as follows: A gas-steam combined cycle gas turbine lubricating oil pipe type cooling device obtained by the above design of the present invention, when in use, a refrigerant is added to the liquid storage cavity, and then the lubricating oil enters through the inlet of the first lubricating oil pipe. At this time, since the first lubricating oil pipe is spiral, the area inside the liquid storage cavity can be increased for heat conduction and refrigeration. At the same time, the semiconductor refrigeration sheet accelerates the heat transfer in the refrigerant. Then the first fan works to drive the air flow inside the hollow pipe, accelerating the heat dissipation of the semiconductor refrigeration sheet, which can improve the continuous heat dissipation effect of the refrigerant in the liquid storage cavity. Then the lubricating oil enters the second lubricating oil pipe through the connecting pipe. Since the second lubricating oil pipe is U-shaped, the area in the cooling box can be increased. At the same time, a plurality of heat dissipation fins are provided on the surface of the second lubricating oil pipe, which can increase the heat dissipation effect. While dissipating heat through the heat dissipation fins and the second lubricating oil pipe itself, the second fan can drive the air flow inside the cooling box. During the process of accelerating the air flow, the second dust-proof net and the activated carbon adsorption sponge can filter the air, thereby reducing the dust adhering to the surface of the heat dissipation fins and the second lubricating oil pipe. In this way, during the cooling process, the cooling effect is improved through the continuous cooling method and increasing the contact area with the outside. At the same time, it is convenient to protect the refrigeration components, reduce the influence of dust adhesion on heat dissipation, and also increase the continuity of cooling, making it more convenient to use. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of a gas-steam combined cycle gas turbine lubricating oil pipe type cooling device provided by an embodiment of the present invention;

[0020] Figure 2 It is a schematic cross-sectional structure diagram of a gas-steam combined cycle gas turbine lubricating oil pipe type cooling device provided by an embodiment of the present invention;

[0021] Figure 3Schematic diagram of the decomposition structure of the protective part of the lubricating oil tube cooling device for a gas-steam combined cycle gas turbine provided by an embodiment of the present invention;

[0022] Figure 4 For the present invention Figure 2 Enlarged view at location A in;

[0023] Figure 5 For the present invention Figure 2 Enlarged view at location B in.

[0024] In the figure: 100 - First cooling structure; 110 - Hollow tube; 120 - Sleeve; 121 - Liquid storage cavity; 122 - Liquid inlet pipe; 123 - Sealing cover; 124 - Pressure relief valve; 130 - Cooling part; 131 - First horizontal plate; 132 - First fan; 133 - Semiconductor refrigeration sheet; 134 - First dust-proof net; 140 - First lubricating oil pipe; 150 - First support frame; 151 - First nail hole; 200 - Second cooling structure; 210 - Cooling box; 211 - First annular plate; 220 - Second lubricating oil pipe; 221 - Heat dissipation fins; 230 - Protective part; 231 - Second annular plate; 2311 - Hand-held part; 232 - Second dust-proof net; 233 - Activated carbon adsorption sponge; 240 - Connecting part; 241 - First magnet ring; 242 - Second magnet ring; 250 - Driving part; 251 - Second horizontal plate; 252 - Second fan; 260 - Second support frame; 261 - Second nail hole; 270 - Connecting pipe. Specific embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0026] Embodiment

[0027] Please refer to Figures 1-5 , the present invention provides a technical solution: A lubricating oil tube cooling device for a gas-steam combined cycle gas turbine, including a first cooling structure 100 and a second cooling structure 200.

[0028] Please refer to Figures 1-4, the first cooling structure 100 includes a hollow tube 110, a sleeve 120, and a cooling member 130. The hollow tube 110 is fixed inside the sleeve 120, and a liquid storage cavity 121 is formed between the hollow tube 110 and the sleeve 120. The cooling member 130 is installed inside the hollow tube 110. A first lubricating oil pipe 140 is fixed inside the liquid storage cavity 121. The first lubricating oil pipe 140 is sleeved on the hollow tube 110 and extends through the sleeve 120 to the outside.

[0029] A liquid inlet pipe 122 and a pressure relief valve 124 are fixedly connected and communicated with the top surface of the liquid storage cavity 121. The end of the liquid inlet pipe 122 is threadedly connected with a sealing cover 123. Here, the liquid inlet pipe 122 can facilitate the addition of cooling liquid into the liquid storage cavity 121. At the same time, the pressure relief valve 124 can improve the safety of the cooling liquid in the liquid storage cavity 121 when the temperature rises after absorbing heat; the cooling member 130 includes a first horizontal plate 131, a first fan 132, and a semiconductor refrigeration sheet 133. The first horizontal plate 131 is fixed to the upper end inside the hollow tube 110. A first dust-proof net 134 is fixed between the first horizontal plate 131 and the hollow tube 110. The semiconductor refrigeration sheet 133 is installed inside the hollow tube 110. Here, the semiconductor refrigeration sheet 133 is used to cool the refrigeration liquid inside the liquid storage cavity 121, which can improve the continuity of the refrigeration liquid to cool the first lubricating oil pipe 140.

[0030] The first lubricating oil pipe 140 is spiral-shaped. The spiral-shaped first lubricating oil pipe 140 can increase the area inside the liquid storage cavity 121, which is beneficial to improving the heat dissipation effect; a first support frame 150 is fixed to the bottom of the sleeve 120. A first nail hole 151 is formed inside the first support frame 150. Here, the first support frames 150 are symmetrically distributed on both sides of the bottom of the sleeve 120, and connection and fixation can be carried out by using screws to penetrate the first nail holes 151.

[0031] Please refer to Figures 1-4 , the second cooling structure 200 includes a cooling box 210, a protective member 230, and a driving member 250. A first annular plate 211 is fixed to the upper end inside the cooling box 210. The protective member 230 is installed on the first annular plate 211 through a connecting member 240. A second lubricating oil pipe 220 is fixed inside the cooling box 210. Heat dissipation fins 221 are fixed on the surface of the second lubricating oil pipe 220. The second lubricating oil pipe 220 is communicated with the first lubricating oil pipe 140 through a connecting pipe 270. The second lubricating oil pipe 220 extends through the cooling box 210 to the outside. The driving member 250 is installed at the bottom of the cooling box 210.

[0032] The protective part 230 includes a second annular plate 231. A second dust-proof net 232 is fixed inside the second annular plate 231. An activated carbon adsorption sponge 233 is fixed to the bottom surface of the second dust-proof net 232. Here, the second dust-proof net 232 and the activated carbon adsorption sponge 233 can be used to block dust, so as to prevent dust from adhering to the second lubricating oil pipe 220 and the heat dissipation fins 221 and thus affect the heat dissipation effect; The connecting part 240 includes a first magnet ring 241 and a second magnet ring 242. The first magnet ring 241 is fixed to the bottom surface of the second annular plate 231. The second magnet ring 242 is fixed to the first annular plate 211. The first magnet ring 241 and the second magnet ring 242 are adsorbed and fixed. Here, the first magnet ring 241 and the second magnet ring 242 can be used to facilitate the disassembly, installation and fixation of the protective part 230, so as to facilitate replacement and cleaning.

[0033] A number of heat dissipation fins 221 are provided. The number of heat dissipation fins 221 are equidistantly spaced on the second lubricating oil pipe 220. The arrangement of the number of heat dissipation fins 221 can increase the heat dissipation area and provide the heat dissipation effect. The driving part 250 includes a second horizontal plate 251 and a second fan 252. The second horizontal plate 251 is fixed to the bottom of the cooling box 210. The second fan 252 is installed on the second horizontal plate 251; The second lubricating oil pipe 220 is U-shaped. The second fans 252 are equidistantly spaced on the second horizontal plate 251. Here, the U-shaped second lubricating oil pipe 220 can increase the area in the cooling box 210, which is beneficial to heat dissipation; Second support frames 260 are symmetrically fixed on both sides of the cooling box 210. Second nail holes 261 are opened inside the second support frames 260. Here, it is convenient to connect and fix the cooling box 210 by passing screws through the second nail holes 261.

[0034] Specifically, the working principle of the lubricating oil tubular cooling device for a gas-steam combined cycle gas turbine: During use, a refrigerant is added to the liquid storage chamber 121, and then the lubricating oil enters through the inlet of the first lubricating oil pipe 140. At this time, since the first lubricating oil pipe 140 is spiral, it can increase the area inside the liquid storage chamber 121 for heat conduction and refrigeration. At the same time, the semiconductor refrigeration chip 133 accelerates the heat transfer in the refrigerant. Then, the first fan 132 operates to drive the air flow inside the hollow tube 110, accelerating the heat dissipation of the semiconductor refrigeration chip 133. This can improve the continuous heat dissipation effect of the refrigerant inside the liquid storage chamber 121. Then, the lubricating oil enters the second lubricating oil pipe 220 through the connecting pipe 270. Since the second lubricating oil pipe 220 is U-shaped, it can increase the area in the cooling box 210. At the same time, a number of heat dissipation fins 221 are provided on the surface of the second lubricating oil pipe 220, which can increase the heat dissipation effect. While dissipating heat through the heat dissipation fins 221 and the second lubricating oil pipe 220 itself, the second fan 252 can drive the air flow inside the cooling box 210. During the process of accelerating the air flow, the second dust-proof net 232 and the activated carbon adsorption sponge 233 can filter the air, thereby reducing the dust adhering to the surfaces of the heat dissipation fins 221 and the second lubricating oil pipe 220. In this way, during the cooling process, the cooling effect is improved through continuous cooling and increasing the contact area with the outside. At the same time, it is convenient to protect the refrigeration components, reducing the influence of dust adhesion on heat dissipation, and also increasing the continuity of cooling for more convenient use.

[0035] It should be noted that the specific model specifications of the first fan 132, the semiconductor refrigeration chip 133, and the second fan 252 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0036] The power supply and its principle of the first fan 132, the semiconductor refrigeration chip 133, and the second fan 252 are clear to those skilled in the art and will not be described in detail here.

[0037] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lubricating oil tubular cooling device for a gas-steam combined cycle combustion engine, comprising a first cooling structure (100) and a second cooling structure (200) installed on the first cooling structure (100), characterized in that: The first cooling structure (100) comprises a hollow tube (110), a sleeve (120) and a cooling element (130); the hollow tube (110) is fixed inside the sleeve (120); a liquid storage cavity (121) is formed between the hollow tube (110) and the sleeve (120); the cooling element (130) is installed inside the hollow tube (110); a first lubricating oil pipe (140) is fixed inside the liquid storage cavity (121); the first lubricating oil pipe (140) is sleeved on the hollow tube (110); and the first lubricating oil pipe (140) passes through the sleeve (120) and extends to the outside; The second cooling structure (200) comprises a cooling box (210), a protective member (230) and a driving member (250); a first annular plate (211) is fixed to the upper end of the interior of the cooling box (210); the protective member (230) is mounted on the first annular plate (211) via a connecting member (240); a second lubricating oil pipe (220) is fixed to the interior of the cooling box (210); a heat dissipation fin (221) is fixed to the surface of the second lubricating oil pipe (220); the second lubricating oil pipe (220) is connected to the first lubricating oil pipe (140) via a connecting pipe (270); and the driving member (250) is mounted at the bottom of the cooling box (210).

2. A lubricating oil tubular cooling device for a gas-steam combined cycle combustion engine according to claim 1, characterized in that: A liquid inlet pipe (122) and a pressure relief valve (124) are connected and fixed to the top surface of the liquid storage chamber (121), and a sealing cover (123) is threadedly connected to the end of the liquid inlet pipe (122).

3. The lubricating oil tubular cooling device for a gas-steam combined cycle combustion engine according to claim 1, characterized in that: The cooling element (130) includes a first transverse plate (131), a first fan (132) and a semiconductor cooling sheet (133), wherein the first transverse plate (131) is fixed to the inner upper end of the hollow tube (110), a first dustproof net (134) is fixed between the first transverse plate (131) and the hollow tube (110), and the semiconductor cooling sheet (133) is installed inside the hollow tube (110).

4. The lubricating oil tubular cooling device for a gas-steam combined cycle combustion engine according to claim 1, characterized in that: The first lubricating oil pipe (140) is spiral-shaped, a first support frame (150) is fixed to the bottom of the sleeve (120), and a first nail hole (151) is opened inside the first support frame (150).

5. The lubricating oil tubular cooling device for a gas-steam combined cycle combustion engine according to claim 1, characterized in that: The protective member (230) comprises a second annular plate (231), a second dustproof net (232) is fixed inside the second annular plate (231), and an activated carbon adsorption sponge (233) is fixed on the bottom surface of the second dustproof net (232).

6. A lubricating oil tubular cooling device for a gas-steam combined cycle combustion engine according to claim 5, characterized in that: The connecting member (240) comprises a first magnet ring (241) and a second magnet ring (242); the first magnet ring (241) is fixed to the bottom surface of the second annular plate (231); the second magnet ring (242) is fixed to the first annular plate (211); the first magnet ring (241) and the second magnet ring (242) are fixed by adsorption.

7. The lubricating oil tubular cooling device for a gas-steam combined cycle combustion engine according to claim 1, characterized in that: A plurality of the heat dissipation fins (221) are provided, and the plurality of heat dissipation fins (221) are distributed on the second lubricating oil pipe (220) at equal intervals.

8. The lubricating oil tubular cooling device for a gas-steam combined cycle combustion engine according to claim 1, characterized in that: The driving member (250) comprises a second transverse plate (251) and a second fan (252); the second transverse plate (251) is fixed to the bottom of the cooling box (210); and the second fan (252) is mounted on the second transverse plate (251).

9. A lubricating oil tubular cooling device for a gas-steam combined cycle combustion engine according to claim 8, characterized in that: The second lubricating oil pipe (220) is U-shaped, and the second fans (252) are distributed on the second transverse plate (251) at equal intervals.

10. The lubricating oil tubular cooling device for a gas-steam combined cycle combustion engine according to claim 1, characterized in that: Second support frames (260) are symmetrically fixed on both sides of the cooling box (210), and second nail holes (261) are provided inside the second support frames (260).

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