Heat preservation structure applied to double oil tanks

Abstract

The utility model belongs to the technical field of steam turbine oil tanks, and particularly discloses a heat preservation structure applied to double oil tanks, which comprises a heat preservation cylinder, an oil tank is fixedly mounted in the heat preservation cylinder, the output end of the oil tank is fixedly communicated with an oil pipe, a circulating air heating mechanism is arranged in the heat preservation cylinder, and a heat preservation plate is arranged in the heat preservation cylinder. Cavities between the heat preservation plates and the heat preservation barrels are filled with heat insulation cotton, sealing heat preservation mechanisms are arranged on the tops of the heat preservation barrels, a main oil tank and an auxiliary oil tank are installed in the two heat preservation barrels respectively, and the two oil tanks have the heat preservation effect at the same time. According to the heat preservation structure applied to the double oil tanks, waste heat and heat insulation materials are comprehensively utilized, so that the oil tanks can be better maintained in a proper temperature range, it is ensured that fuel oil cannot be solidified or diluted in a cold environment, and a more stable and relatively constant temperature environment is provided for the oil tanks; and the use reliability of the steam turbine system in the cold environment is improved.

Description

Technical Field

[0001] The present application relates to the technical field of steam turbine oil tanks, and in particular to a thermal insulation structure applied to double oil tanks. Background Art

[0002] The dual oil tank of a steam turbine usually includes two fuel tanks, one is the main oil tank used in daily operation, and the other is the backup oil tank. The purpose of this design is to ensure that the steam turbine can switch to the backup oil tank when the fuel supply is interrupted or the main oil tank fails, thereby ensuring the reliability and stable operation of the system.

[0003] The oil tanks currently used in conjunction with steam turbines are usually not equipped with insulation structures. When the steam turbines work in winter or extremely cold environments, the fuel in the tank may solidify due to the low temperature, resulting in reduced fuel fluidity, which may affect the fuel supply and the normal operation of the steam turbine. Utility Model Content

[0004] In view of this, the purpose of the utility model is to solve the shortcomings existing in the background technology, and to propose a heat preservation structure applied to a double oil tank to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the utility model provides an insulation structure applied to double oil tanks, including an insulation cylinder, an oil tank is fixedly installed inside the insulation cylinder, an output end of the oil tank is fixedly connected to an oil pipe, a circulating air heating mechanism is arranged inside the insulation cylinder, an insulation plate is arranged inside the insulation cylinder, the cavity between the insulation plate and the insulation cylinder is filled with insulating cotton, a sealing insulation mechanism is arranged on the top of the insulation cylinder, a main oil tank and an auxiliary oil tank are respectively installed in the two groups of insulation cylinders, and the two groups of oil tanks are simultaneously insulated.

[0006] Preferably, the circulating air heating mechanism includes a circulating pipe wound around the outer surface of the oil tank, the input end of the circulating pipe is fixedly connected to an access pipe, and the output end of the circulating pipe is fixedly connected to an exhaust pipe. The high-temperature exhaust gas generated by the turbine can be introduced through the circulating air heating mechanism, thereby having an insulation effect on the oil tank.

[0007] Preferably, the sealing and heat-insulating mechanism comprises an embedding groove opened on the top of the heat-insulating cylinder, and a cylinder cover is arranged on the top of the heat-insulating cylinder. The sealing and heat-insulating mechanism can effectively reduce the heat loss in the heat-insulating cylinder.

[0008] Preferably, a rubber molding is provided at the bottom of the cylinder cover, and recessed grooves are provided at the top of the heat-insulating cylinder and the edge of the cylinder cover.

[0009] Preferably, a fixing plate is fixedly connected to the outer surface of the heat-insulating cylinder, and a through shaft is fixedly penetrated through the inner side of the fixing plate.

[0010] Preferably, the outer surface of the through shaft is rotatably connected with a screw, the outer surface of the screw is movably engaged with the inner wall of the recessed groove, and a butterfly nut is threadedly sleeved on the outer surface of the screw.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The thermal insulation structure applied to the double oil tanks can better maintain the oil tanks in a suitable temperature range by comprehensively utilizing waste heat and thermal insulation materials, ensuring that the fuel will not solidify or dilute in a cold environment, providing a more stable and relatively constant temperature environment for the oil tanks, and improving the reliability of the turbine system in a cold environment.

[0013] 2. The thermal insulation structure applied to the double oil tanks can enable the cylinder cover to be quickly and stably installed on the top of the thermal insulation cylinder through the sealing thermal insulation mechanism, so that the entire thermal insulation cylinder is in a relatively closed environment, which increases the thermal insulation effect. In addition, the thermal insulation cylinder can be quickly opened during the inspection and maintenance of the oil tank, which improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the internal structure of the insulation cylinder for this application;

[0016] Figure 3 This is a schematic diagram of the top structure of the insulation cylinder for this application;

[0017] Figure 4 This is a schematic diagram of the bottom structure of the cylinder cover of this application;

[0018] Figure 5 For this application Figure 3 Enlarged view of point a in the middle.

[0019] Among them: 1. Insulation cylinder; 2. Oil tank; 3. Oil pipe; 4. Circulation pipe; 5. Access pipe; 6. Exhaust pipe; 7. Insulation board; 8. Insulation cotton; 9. Embedded groove; 10. Cylinder cover; 11. Rubber strip; 12. Recessed groove; 13. Fixing plate; 14. Through shaft; 15. Screw; 16. Butterfly nut. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] See also Figure 1-5 A heat preservation structure applied to a double oil tank comprises a heat preservation tube 1, an oil tank 2 is fixedly installed inside the heat preservation tube 1, an output end of the oil tank 2 is fixedly connected with an oil pipe 3, a circulating air heating mechanism is arranged inside the heat preservation tube 1, a heat preservation board 7 is arranged inside the heat preservation tube 1, a cavity between the heat preservation board 7 and the heat preservation tube 1 is filled with heat insulating cotton 8, and a sealing heat preservation mechanism is arranged on the top of the heat preservation tube 1.

[0022] Through the above technical scheme, the high-temperature exhaust gas generated during the operation of the turbine is introduced into the circulating air heating mechanism, which can heat the main and auxiliary oil tanks 2 in the two groups of insulation tubes 1. The sealing insulation mechanism can reduce the heat loss in the insulation tube 1.

[0023] Specifically, the circulating air heating mechanism includes a circulating pipe 4 wound around the outer surface of the oil tank 2 , the input end of the circulating pipe 4 is fixedly connected to the access pipe 5 , and the output end of the circulating pipe 4 is fixedly connected to the exhaust pipe 6 .

[0024] Through the above technical solution, the circulation pipe 4 is wound around the outer surface of the oil tank 2, and can transfer heat to the oil tank 2 when passing through the high-temperature exhaust gas, so as to keep the oil tank 2 at a suitable temperature.

[0025] Specifically, the sealing and heat-insulating mechanism includes an embedding groove 9 opened on the top of the heat-insulating cylinder 1 , and a cylinder cover 10 is arranged on the top of the heat-insulating cylinder 1 .

[0026] Through the above technical solution, the embedding groove 9 and the rubber strip 11 can relatively maintain good sealing performance of the heat preservation tube 1 after being embedded.

[0027] Specifically, a rubber molding 11 is provided at the bottom of the cylinder cover 10 , and a recessed groove 12 is provided at the top of the heat-insulating cylinder 1 and the edge of the cylinder cover 10 .

[0028] Through the above technical solution, the design of the recessed groove 12 is to allow the screw 15 to be smoothly flipped and adjusted in position, and cooperate with the butterfly nut 16 to effectively limit the screw 15.

[0029] Specifically, a fixing plate 13 is fixedly connected to the outer surface of the heat-insulating cylinder 1 , and a through shaft 14 is fixedly penetrated through the inner side of the fixing plate 13 .

[0030] Through the above technical solution, the position of the screw 15 can be adjusted during the process of rotating the screw 15 along the through-shaft 14 .

[0031] Specifically, the outer surface of the through shaft 14 is rotatably connected with a screw 15 , the outer surface of the screw 15 is movably engaged with the inner wall of the recessed groove 12 , and a butterfly nut 16 is threadedly sleeved on the outer surface of the screw 15 .

[0032] Through the above technical solution, when the screw 15 is completely inserted into the recessed groove 12 on the heat preservation cylinder 1 and the cylinder cover 10 , the cylinder cover 10 can be fixed in cooperation with the butterfly nut 16 .

[0033] Working principle: When the device is in use, the main and auxiliary oil tanks 2 of the steam turbine are respectively installed in the two sets of insulation cylinders 1. The sealing insulation mechanism can make the entire insulation cylinder 1 in a closed state, that is, at this time, the screw 15 needs to be rotated along the through shaft 14. When the screw 15 is inserted into the recessed groove 12 opened at the top of the insulation cylinder 1 and the edge of the cylinder cover 10, the butterfly nut 16 can be screwed along the screw 15. When all the butterfly nuts 16 are rotated along the screw 15 and moved to tightly against the upper surface of the cylinder cover 10, all the screws 15 are stuck in the recessed groove 12. At this time, the cylinder cover 10 is stably installed on the top of the insulation cylinder 1, and the rubber strip 11 is embedded in the embedding groove 9, which can effectively reduce heat loss. Then, the high-temperature exhaust gas generated during the operation of the steam turbine is introduced into the access pipe 5, and then introduced into the circulation pipe 4 through the access pipe 5. When the circulation pipe 4 is wrapped around the surface of the oil tank 2, the heat of the high-temperature exhaust gas can be transferred to the oil tank 2. The exhaust gas after the heat transfer will eventually be discharged from the exhaust pipe 6. During this process, the temperature in the insulation tube 1 will increase significantly, which can effectively reduce the reduction in fuel fluidity caused by the low-temperature solidification of the fuel in the oil tank 2, thereby ensuring the normal operation of the steam turbine. In addition, an insulation board 7 is arranged in the insulation tube 1, and insulation cotton 8 is filled in the cavity between the insulation board 7 and the insulation tube 1. This design effectively reduces heat loss and prevents the external environment from affecting the temperature of the oil tank 2.

[0034] In summary: through the comprehensive utilization of waste heat and thermal insulation materials, the oil tank 2 can better maintain an appropriate temperature range, ensuring that the fuel will not solidify or dilute in a cold environment, ensuring the normal fluidity of the fuel in the oil pipe 3, providing a more stable and relatively constant temperature environment for the oil tank 2, and improving the reliability of the turbine system in cold environments.

[0035] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A heat preservation structure for a double oil tank, comprising a heat preservation tube (1), characterized in that: An oil tank (2) is fixedly installed inside the heat preservation tube (1), and an output end of the oil tank (2) is fixedly connected to an oil pipe (3). A circulating air heating mechanism is arranged inside the heat preservation tube (1). A heat preservation plate (7) is arranged inside the heat preservation tube (1), and the cavity between the heat preservation plate (7) and the heat preservation tube (1) is filled with heat insulation cotton (8). A sealing heat preservation mechanism is arranged on the top of the heat preservation tube (1).

2. The heat preservation structure applied to a double oil tank according to claim 1, characterized in that: The circulating air heating mechanism comprises a circulating pipe (4) wound around the outer surface of the oil tank (2), the input end of the circulating pipe (4) being fixedly connected to an access pipe (5), and the output end of the circulating pipe (4) being fixedly connected to an exhaust pipe (6).

3. The heat preservation structure applied to a double oil tank according to claim 1, characterized in that: The sealing and heat-insulating mechanism comprises an embedding groove (9) provided on the top of the heat-insulating cylinder (1), and a cylinder cover (10) is provided on the top of the heat-insulating cylinder (1).

4. The heat preservation structure applied to a double oil tank according to claim 3 is characterized in that: The bottom of the cylinder cover (10) is provided with a rubber molding (11), and the top of the heat-insulating cylinder (1) and the edge of the cylinder cover (10) are both provided with a recessed groove (12).

5. The heat preservation structure applied to double oil tanks according to claim 4 is characterized in that: A fixing plate (13) is fixedly connected to the outer surface of the heat-insulating cylinder (1), and a through-shaft (14) is fixedly penetrated through the inner side of the fixing plate (13).

6. The heat preservation structure applied to double oil tanks according to claim 5 is characterized in that: The outer surface of the through shaft (14) is rotatably connected with a screw (15), the outer surface of the screw (15) is movably engaged with the inner wall of the recessed groove (12), and a butterfly nut (16) is threadedly sleeved on the outer surface of the screw (15).

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