Cooling device for thermal power generation steam turbine

Abstract

The utility model relates to the technical field, and discloses a cooling device for a thermal power generation steam turbine, which comprises a steam turbine body, a cooling mechanism arranged at the top of the steam turbine body, two exhaust pipes arranged at the top of the cooling mechanism, and a sleeve shell sleeved on the top surface of the steam turbine body, the water inlet pipes are communicated with one another. The cooling mechanism is arranged to cool the steam turbine body, meanwhile, the exhaust pipe, the exhaust fan, the radiator, the heat conduction cylinder pipe and the heat exchange bottom plate are matched to improve the cooling effect, and meanwhile, the stabilizing mechanism is arranged to reinforce the water conveying pipe and the water outlet pipe in the cooling process; the situation that in daily use, a connecting opening of the water pipe structure is loosened under the influence of the shaking amplitude, refrigerating fluid leaks, and consequently the safety problem is caused is prevented, the clamping blocks are driven by the buffer springs to stably clamp the water pipe structure, and then the conveying and discharging stability of the refrigerator is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbines, in particular to a cooling device for a thermal power generation steam turbine. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle to become an accelerated airflow and is then sprayed onto the blades, causing the rotor with the blade rows to rotate and perform work externally. Due to the working principle of the steam turbine, the steam turbine needs to be cooled after shutdown. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power plants.

[0003] At present, the existing steam turbine needs to be cooled when in use, and the prior art usually adopts steam cooling. At this time, it is mostly necessary to use a cooling medium (usually water) to alternate between hot and cold with the steam turbine. At this time, water needs to be transported through water pipes. During the operation of the steam turbine, the water pipes are in an unstable state for a long time. At this time, the stress of the force can easily cause cracks in the water pipe connections, which require timely maintenance, resulting in increased cost investment, and there are also safety issues. In view of the above problems, a cooling device for a thermal power steam turbine is provided herein. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a cooling device for a thermal power generation steam turbine, aiming to improve the safety problem that the cooling device in the prior art lacks reinforcement components, resulting in easy leakage during water transportation.

[0005] In order to achieve the above-mentioned object, the utility model adopts the following technical solution: a cooling device for a thermal power generation steam turbine, comprising a steam turbine body, a cooling mechanism is installed on the top of the steam turbine body, and two exhaust pipes are installed on the top of the cooling mechanism;

[0006] The cooling mechanism includes two water inlet pipes and a casing at the front end. The casing is sleeved on the top surface of the turbine body. The water inlet pipes are connected to each other. A liquid inlet is installed on the top of the water inlet pipe. The bottom end of the water inlet pipe is connected to a water supply pipe. One side of the bottom end of the water supply pipe is connected to two connecting water pipes. One end of the connecting water pipe is connected to a condenser. The condenser is attached and installed on the outer surface of the turbine body. The connecting water pipes are connected and installed on both sides of the condenser. The other side of the condenser is connected to a water outlet pipe through the connecting water pipe. A water pump is provided at one end of the outlet pipe. The outlet pipe passes through the back end surface of the turbine body through the water pump.

[0007] As a further description of the above technical solution:

[0008] An exhaust fan is installed inside the exhaust pipe, and a radiator is installed at the bottom end of the exhaust fan.

[0009] As a further description of the above technical solution:

[0010] The radiator is composed of a plurality of fins. Three heat-conducting copper tubes are connected to the inside of the radiator. The bottom ends of the heat-conducting copper tubes are connected to a heat-exchange base plate. The heat-exchange base plate is fixedly mounted on the outer surface of the turbine body.

[0011] As a further description of the above technical solution:

[0012] The outer surfaces of the water delivery pipe and the water outlet pipe are sleeved with a stabilizing mechanism, and the stabilizing mechanism includes two clamping blocks, and the water delivery pipe and the water outlet pipe are clamped between the clamping blocks respectively.

[0013] As a further description of the above technical solution:

[0014] A buffer rod is installed at the back end of the clamping block, and a base is set through the back end of the buffer rod. Buffer springs are installed on both sides of the bottom end of the buffer rod passing through the base. The bottom end of the buffer spring is fixedly connected to the inner bottom end of the base, and the buffer spring has a self-contained damper inside.

[0015] As a further description of the above technical solution:

[0016] A rubber base is installed at the bottom of the steam turbine body, and a dust-proof net is installed at the top of the exhaust pipe.

[0017] The utility model has the following beneficial effects:

[0018] In the utility model, a cooling mechanism is provided to cool the turbine body, and an exhaust pipe, an exhaust fan, a radiator, a heat-conducting tube and a heat-exchange base plate are used to improve the cooling effect. At the same time, a stabilizing mechanism is provided to reinforce the water supply pipe and the water outlet pipe during the cooling process to prevent the water pipe structure from loosening its connection port under the influence of the shaking amplitude in daily use, thereby preventing the refrigerant from leaking and causing safety problems. The buffer spring drives the clamp to firmly clamp the water pipe structure, thereby ensuring the stability of the refrigerator's delivery and discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a cooling device for a thermal power generation steam turbine proposed by the utility model;

[0020] Figure 2 A cross-sectional view of a cooling mechanism of a cooling device for a thermal power generation steam turbine proposed by the utility model;

[0021] Figure 3A schematic diagram of a radiator of a cooling device for a thermal power generation steam turbine proposed by the utility model;

[0022] Figure 4 A schematic diagram of a stabilizing mechanism of a cooling device for a thermal power generation steam turbine proposed by the utility model;

[0023] Legend:

[0024] 1. Shell; 2. Cooling mechanism; 201. Water inlet pipe; 202. Liquid inlet; 203. Water pipe; 204. Connecting water pipe; 205. Condenser; 206. Water outlet pipe; 207. Water pump; 3. Exhaust pipe; 4. Exhaust fan; 5. Radiator; 6. Thermal copper tube; 7. Heat exchange bottom plate; 8. Stabilizing mechanism; 801. Clamp; 802. Buffer rod; 803. Base; 804. Buffer spring. DETAILED DESCRIPTION

[0025] 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 in 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.

[0026] Reference Figure 1-4 The utility model provides an embodiment: a cooling device for a thermal power generation steam turbine, comprising a steam turbine body 1, a cooling mechanism 2 is installed on the top of the steam turbine body 1, and two exhaust pipes 3 are installed on the top of the cooling mechanism 2;

[0027] The cooling mechanism 2 includes two water inlet pipes 201 at the front end and a casing 208. The casing 208 is sleeved on the top surface of the steam turbine body 1. The water inlet pipes 201 are connected to each other. A liquid inlet 202 is installed on the top of the water inlet pipe 201. The bottom end of the water inlet pipe 201 is connected to a water delivery pipe 203. One side of the bottom end of the water delivery pipe 203 is connected to two connecting water pipes 204. One end of the connecting water pipe 204 is connected to a condenser 205. The condenser 205 is attached to the outer surface of the steam turbine body 1. The connecting water pipes 204 are connected to both sides of the condenser 205. The other side of the condenser 205 is connected to a water outlet pipe 206 through the connecting water pipe 204. A water pump 207 is provided at one end of the outlet pipe 206. The outlet pipe 206 passes through the back end surface of the turbine body 1 through the water pump 207, and the cooling water is transported to the inside of the water inlet pipe 201 through the liquid inlet 202. Then the cooling water is transported to the water delivery pipe 203 by the water inlet pipe 201. The water delivery pipe 203 transfers the cooling water to the condenser 205 through the connecting water pipe 204. The turbine body 1 is cooled by the coolant inside the condenser 205. After heat exchange, the hot water is transported to the outlet pipe 206 through the connecting water pipe 204. The water inside the outlet pipe 206 is discharged from the turbine body 1 by starting the water pump 207.

[0028] An exhaust fan 4 is installed inside the exhaust pipe 3 , and a radiator 5 is installed at the bottom end of the exhaust fan 4 .

[0029] The radiator 5 is composed of a plurality of fins, and three heat-conducting copper tubes 6 are connected to the inside of the radiator 5. The bottom ends of the heat-conducting copper tubes 6 are connected to a heat-exchange base plate 7, and the heat-exchange base plate 7 is fixedly mounted on the outer surface of the steam turbine body 1. By fixing the heat-dissipating base plate 7 on the outer surface of the steam turbine body 1, the heat-conducting copper tubes 6 are used to complete the heat conduction work to the radiator 5 composed of a plurality of fins, and the hot air is discharged from the top of the cooling mechanism 2 through the exhaust pipe 3 by the exhaust fan 4, so as to further improve the cooling effect.

[0030] The outer surfaces of the water delivery pipe 203 and the water outlet pipe 206 are sleeved with a stabilizing mechanism 8 , which includes two clamping blocks 801 , and the water delivery pipe 203 and the water outlet pipe 206 are clamped between the clamping blocks 801 .

[0031] A buffer rod 802 is installed at the back end of the clamp block 801, and a base 803 is set through the back end of the buffer rod 802. The buffer rod 802 passes through the bottom end of the base 803, and buffer springs 804 are installed on both sides. The bottom end of the buffer spring 804 is fixedly connected to the inner bottom end of the base 803. The buffer spring 804 has a self-contained damper inside. When the water pipe shakes during the operation of the equipment, the clamp block 801 can drive the buffer rod 802 to move inside the base 803, so that the buffer rod 802 transfers the force to the buffer spring 804, and the built-in damper of the buffer spring 804 realizes shock absorption, thereby ensuring the stable transportation of the water pipe, preventing the water outlet connection from loosening, and improving safety.

[0032] A rubber base is installed at the bottom of the turbine body 1, and a dust screen is installed on the top of the exhaust pipe 3. The rubber base reduces the noise pollution generated during the operation of the equipment and provides stable support. The dust screen prevents dust from falling into the exhaust pipe 3 and affecting the exhaust efficiency.

[0033] Working principle: When in use, cooling water is transported to the inside of the water inlet pipe 201 through the liquid inlet 202, and then the cooling water is transported to the water delivery pipe 203 by the water inlet pipe 201. The water delivery pipe 203 transfers the cooling water to the condenser 205 through the connecting water pipe 204. The steam turbine body 1 is cooled by the coolant inside the condenser 205. After heat exchange, the hot water is transported to the water outlet pipe 206 through the connecting water pipe 204. The water inside the water outlet pipe 206 is discharged from the steam turbine body 1 by starting the water pump 207. Then, the heat dissipation base plate 7 can be fixedly attached to the outer surface of the steam turbine body 1, and the heat conduction is completed through the heat conduction copper pipe 6. The heat is worked to the radiator 5 composed of a plurality of fins, and the hot air is discharged from the top of the cooling mechanism 2 through the exhaust pipe 3 by the exhaust fan 4, so as to further improve the cooling effect. In the process of cooling with water medium, the water supply pipe 203 and the water outlet pipe 206 are firmly clamped by the clamp block 801. When the water pipe shakes during the operation of the equipment, the buffer rod 802 can be driven by the clamp block 801 to move toward the inside of the base 803, so that the buffer rod 802 transfers the force to the buffer spring 804, and the built-in damper of the buffer spring 804 realizes shock absorption, thereby ensuring the stable transportation of the water pipe, preventing the water outlet connection from loosening, and improving safety.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling device for a thermal power generation steam turbine, comprising a steam turbine body (1), characterized in that: A cooling mechanism (2) is installed on the top of the steam turbine body (1), and two exhaust pipes (3) are installed on the top of the cooling mechanism (2); The cooling mechanism (2) comprises two water inlet pipes (201) at the front end and a casing (208); the casing (208) is sleeved on the top surface of the steam turbine body (1); the water inlet pipes (201) are connected to each other; a liquid inlet (202) is installed at the top of the water inlet pipe (201); the bottom end of the water inlet pipe (201) is connected to a water delivery pipe (203); one side of the bottom end of the water delivery pipe (203) is connected to two connecting water pipes (204); One end is connected to a condenser (205), and the condenser (205) is attached to the outer surface of the turbine body (1). The connecting water pipe (204) is connected to both sides of the condenser (205). The other side of the condenser (205) is connected to a water outlet pipe (206) through the connecting water pipe (204). A water pump (207) is provided at one end of the water outlet pipe (206), and the water outlet pipe (206) passes through the back end surface of the turbine body (1) through the water pump (207).

2. A cooling device for a thermal power generation steam turbine according to claim 1, characterized in that: An exhaust fan (4) is installed inside the exhaust pipe (3), and a radiator (5) is installed at the bottom end of the exhaust fan (4).

3. A cooling device for a thermal power generation steam turbine according to claim 2, characterized in that: The radiator (5) is composed of a plurality of fins. The interior of the radiator (5) is connected to three heat-conducting copper tubes (6). The bottom ends of the heat-conducting copper tubes (6) are connected to a heat-exchange base plate (7). The heat-exchange base plate (7) is fixedly mounted on the outer surface of the steam turbine body (1).

4. A cooling device for a thermal power generation steam turbine according to claim 3, characterized in that: The outer surfaces of the water supply pipe (203) and the water outlet pipe (206) are sleeved with a stabilizing mechanism (8), and the stabilizing mechanism (8) comprises two clamping blocks (801), and the water supply pipe (203) and the water outlet pipe (206) are respectively clamped between the clamping blocks (801).

5. A cooling device for a thermal power generation steam turbine according to claim 4, characterized in that: A buffer rod (802) is installed at the back end of the clamping block (801), and a base (803) is provided through the back end of the buffer rod (802), and buffer springs (804) are installed on both sides of the bottom end of the buffer rod (802) passing through the base (803), and the bottom end of the buffer spring (804) is fixedly connected to the inner bottom end of the base (803), and the buffer spring (804) has a self-contained damper inside.

6. A cooling device for a thermal power generation steam turbine according to claim 1, characterized in that: A rubber base is installed at the bottom of the steam turbine body (1), and a dust screen is installed at the top of the exhaust pipe (3).

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