Oil cooler

Abstract

The utility model relates to the technical field of oil coolers, in particular to an oil cooler. A water inlet is formed in one end of an oil cooler body, a water outlet is formed in the other end of the oil cooler body, an oil inlet is formed in the outer surface, close to the water inlet, of the oil cooler body, an oil outlet is formed in the outer surface, close to the water outlet, of the oil cooler body, a front outer pipe is fixed to one end of a converter pipe, and a rear outer pipe is fixed to the other end of the converter pipe; the cooling device has the beneficial effects that cooling water in an inner cavity of the front outer pipe can dissipate heat of hot oil, when the cooling water flows to half, the temperature of the cooling water in the front outer pipe can rise due to heat absorption, the cooling water in the front outer pipe can enter the rear inner pipe through the variable flow pipe, the front inner pipe can enter the rear outer pipe through the connecting pipe, and therefore the cooling water in the front outer pipe can be cooled. And the cooling water in the rear outer pipe continuously cools the hot oil, so that the cooling water in the front and rear outer pipes has a good heat absorption effect.

Description

Technical Field

[0001] The utility model relates to the technical field of oil coolers, in particular to an oil cooler. Background Art

[0002] The oil cooler, also known as the oil-water cooler or the shell and tube oil cooler, is a turbine oil cooling device used in conjunction with the steam turbine in the power system.

[0003] In the prior art, an oil cooler is an oil cooling device widely used in power systems, especially in conjunction with steam turbines. Its main function is to cool the lubricating oil and ensure that the bearing temperature of the steam turbine and other equipment remains within a normal range, thereby ensuring the normal operation of the equipment. The cooling mechanism inside the oil cooler is mainly composed of heat dissipation pipes, through which cooling water is transported and the cooling water is used to absorb the heat in the oil to achieve the effect of oil cooling.

[0004] However, when the existing oil cooler is in use, when the cooling water flows from the oil inlet end to the oil outlet end under the action of the radiator pipe, the cooling water temperature inside the radiator pipe will continue to increase, and the heat absorption effect of the cooling water will gradually decrease, which will cause uneven cooling of the oil inside the oil cooler. The oil has a good cooling effect only at the water inlet end of the radiator pipe, but the overall cooling effect of the oil is poor. Utility Model Content

[0005] The purpose of the present utility model is to provide an oil cooler to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an oil cooler, the oil cooler comprising:

[0007] An oil cooler body, wherein one end of the oil cooler body is provided with a water inlet, the other end of the oil cooler body is provided with a water outlet, an outer surface of the oil cooler body close to the water inlet is provided with an oil inlet, and an outer surface of the oil cooler body close to the water outlet is provided with an oil outlet;

[0008] A current transformer tube, wherein a front outer tube is fixed to one end of the current transformer tube, a rear outer tube is fixed to the other end of the current transformer tube, a front inner tube is fixed inside the front outer tube, and a rear inner tube is fixed inside the rear outer tube.

[0009] Preferably, a fixing plate is fixed to the inner wall of the oil cooler body, and two groups of fixing plates are provided. The two groups of fixing plates are symmetrically distributed. The fixing plates are located on the inner wall of the oil cooler body between the water inlet and the oil inlet, and the ends of the front outer tube and the rear outer tube are fixed on the surface of the fixing plates.

[0010] Preferably, a connecting block is fixed between the inner cavity of the front outer tube and the outer surface of the front inner tube, a flow conversion inner cavity is opened inside the flow conversion tube, and the front inner tube is sealed by a port at the flow conversion inner cavity.

[0011] Preferably, the port of the front outer tube near the flow conversion cavity is empty, the port of the rear inner tube near the flow conversion cavity is empty, and the port of the rear outer tube near the flow conversion cavity is sealed.

[0012] Preferably, a connecting pipe is fixed between the sealing part of the front inner tube and the sealing part of the rear outer tube, and the connecting pipe connects the rear outer tube and the front inner tube, and the front outer tube, the variable flow cavity and the rear inner tube are connected.

[0013] Preferably, the front outer tubes are provided in multiple groups, and the multiple groups of front outer tubes are circumferentially distributed between the two groups of fixed plates; the connecting tubes are provided in multiple groups, and the multiple groups of connecting tubes are circumferentially distributed between the front inner tube and the rear outer tube.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The cooling water in the inner cavity of the front outer tube will dissipate the heat of the hot oil. When the cooling water flows halfway, the temperature of the cooling water in the front outer tube will rise due to heat absorption, so the cooling water in the front outer tube will enter the rear inner tube through the flow converter, and the front inner tube will enter the rear outer tube through the connecting tube. The cooling water in the rear outer tube continues to cool the hot oil, so that the cooling water in the front and rear outer tubes has a good heat absorption effect, thereby improving the overall cooling effect of the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partially cutaway perspective diagram of the overall structure of the utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the heat pipe assembly structure of the utility model;

[0019] Figure 4 It is a cutaway perspective schematic diagram of the heat dissipation pipe structure of the present invention.

[0020] In the figure: 1. Water inlet; 2. Oil cooler body; 3. Oil inlet; 4. Oil outlet; 5. Water outlet; 6. Fixing plate; 7. Front outer tube; 8. Variable flow tube; 9. Rear outer tube; 10. Front inner tube; 11. Connecting block; 12. Connecting tube; 13. Variable flow cavity; 14. Rear inner tube. DETAILED DESCRIPTION

[0021] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] For the purpose of simplicity and illustration, the principles of the embodiments are described primarily with reference to examples. In the following description, many specific details are provided to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail to avoid unnecessarily obscuring the understanding of these embodiments. In addition, all embodiments may be used in combination with each other.

[0023] See also Figures 1 to 4 , the utility model provides a technical solution: an oil cooler.

[0024] In the first embodiment, a water inlet 1 is provided at one end of the oil cooler body 2, a water outlet 5 is provided at the other end of the oil cooler body 2, an oil inlet 3 is provided on the outer surface of the oil cooler body 2 near the water inlet 1, and an oil outlet 4 is provided on the outer surface of the oil cooler body 2 near the water outlet 5. Cooling water enters the inner cavity of the front outer tube 7 and the inner cavity of the front inner tube 10 through the water inlet 1, and then hot oil is sent into the inner cavity of the oil cooler body 2 through the oil inlet 3.

[0025] A front outer tube 7 is fixed to one end of the variable flow tube 8, and a rear outer tube 9 is fixed to the other end of the variable flow tube 8. A front inner tube 10 is fixed inside the front outer tube 7, and a rear inner tube 14 is fixed inside the rear outer tube 9. The cooling water in the front outer tube 7 will enter the rear inner tube 14 through the variable flow tube 8, and the front inner tube 10 will enter the rear outer tube 9 through the connecting tube 12.

[0026] On the basis of Example 1, in order to improve the overall cooling effect of the oil, a fixing plate 6 is fixed to the inner wall of the oil cooler body 2. Two groups of fixing plates 6 are provided, and the two groups of fixing plates 6 are symmetrically distributed. The fixing plates 6 are located on the inner wall of the oil cooler body 2 between the water inlet 1 and the oil inlet 3, and the ends of the front outer tube 7 and the rear outer tube 9 are fixed to the surface of the fixing plates 6.

[0027] A connecting block 11 is fixed between the inner cavity of the front outer tube 7 and the outer surface of the front inner tube 10 . A flow conversion cavity 13 is opened inside the flow conversion tube 8 . The front inner tube 10 is sealed by a port at the flow conversion cavity 13 .

[0028] The port of the front outer tube 7 close to the flow conversion cavity 13 is empty, the port of the rear inner tube 14 close to the flow conversion cavity 13 is empty, and the port of the rear outer tube 9 close to the flow conversion cavity 13 is sealed.

[0029] A connecting pipe 12 is fixed between the sealing part of the front inner tube 10 and the sealing part of the rear outer tube 9. The connecting pipe 12 connects the rear outer tube 9 and the front inner tube 10, and the front outer tube 7, the variable flow cavity 13 and the rear inner tube 14 are connected.

[0030] There are multiple groups of front outer tubes 7, which are circumferentially distributed between the two groups of fixing plates 6; there are multiple groups of connecting tubes 12, which are circumferentially distributed between the front inner tube 10 and the rear outer tube 9.

[0031] In actual use, the circulating water adopts a cooling tower-recirculating water supply system, and the circulating water system provides cooling water for the condenser and the open-cycle cooling water system. When the oil cooler main body 2 is used to cool the turbine lubricating oil, the cooling water is first passed through the water inlet 1 into the inner cavity of the front outer tube 7 and the inner cavity of the front inner tube 10, and then the hot oil is sent into the inner cavity of the oil cooler main body 2 through the oil inlet 3. The cooling water in the inner cavity of the front outer tube 7 will dissipate heat for the hot oil. When the cooling water flows halfway, the cooling water in the front outer tube 7 will increase in temperature due to heat absorption, so the cooling water in the front outer tube 7 will pass through the flow tube 8 into the rear inner tube 14, and the front inner tube 10 will pass through the connecting tube 12 into the rear outer tube 9. The cooling water in the rear outer tube 9 continues to cool the hot oil, so that the cooling water in the front and rear outer tubes has a good heat absorption effect, thereby improving the overall cooling effect of the oil.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil cooler, characterized in that: The oil cooler comprises: An oil cooler body (2), wherein a water inlet (1) is provided at one end of the oil cooler body (2), a water outlet (5) is provided at the other end of the oil cooler body (2), an oil inlet (3) is provided on the outer surface of the oil cooler body (2) close to the water inlet (1), and an oil outlet (4) is provided on the outer surface of the oil cooler body (2) close to the water outlet (5); A variable current tube (8), wherein a front outer tube (7) is fixed to one end of the variable current tube (8), a rear outer tube (9) is fixed to the other end of the variable current tube (8), a front inner tube (10) is fixed inside the front outer tube (7), and a rear inner tube (14) is fixed inside the rear outer tube (9); A fixing plate (6) is fixed to the inner wall of the oil cooler body (2), and the fixing plates (6) are provided in two groups. The two groups of fixing plates (6) are symmetrically distributed. The fixing plates (6) are located on the inner wall of the oil cooler body (2) between the water inlet (1) and the oil inlet (3), and the ends of the front outer tube (7) and the rear outer tube (9) are fixed to the surface of the fixing plate (6); A connecting block (11) is fixed between the inner cavity of the front outer tube (7) and the outer surface of the front inner tube (10); a flow-changing inner cavity (13) is provided inside the flow-changing tube (8); and the front inner tube (10) is sealed at a port at the flow-changing inner cavity (13); The port of the front outer tube (7) close to the flow conversion cavity (13) is open, the port of the rear inner tube (14) close to the flow conversion cavity (13) is open, and the port of the rear outer tube (9) close to the flow conversion cavity (13) is sealed.

2. The oil cooler according to claim 1, characterized in that: A connecting pipe (12) is fixed between the sealing portion of the front inner pipe (10) and the sealing portion of the rear outer pipe (9), and the connecting pipe (12) is connected to the rear outer pipe (9) and the front inner pipe (10), and the front outer pipe (7), the variable flow cavity (13) and the rear inner pipe (14) are connected.

3. The oil cooler according to claim 2, characterized in that: The front outer tubes (7) are provided in multiple groups, and the multiple groups of the front outer tubes (7) are circumferentially distributed between the two groups of fixed plates (6); the connecting tubes (12) are provided in multiple groups, and the multiple groups of the connecting tubes (12) are circumferentially distributed between the front inner tube (10) and the rear outer tube (9).

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