Vacuum system for steam turbine unit of power plant

Abstract

This utility model provides a vacuum system for a power plant turbine unit, relating to the field of turbine technology. It includes a condenser and a water ring vacuum pump. A cooling and purifying device is connected between the condenser's exhaust port and the water ring vacuum pump's inlet. The cooling and purifying device includes a tank, a heat exchange assembly, a suction pump, and a purification and adsorption assembly. The heat exchange chamber houses the heat exchange assembly, the purification and adsorption chamber houses the purification and adsorption assembly, and the suction chamber houses the suction pump. The inlet of the suction pump is connected to the purification and adsorption chamber. By connecting the cooling and purifying device between the condenser's exhaust port and the water ring vacuum pump's inlet, this utility model allows the heat exchange assembly to reduce air temperature and the content of uncondensed steam, while the purification and adsorption assembly adsorbs impurities from the air. This prevents high-temperature air containing corrosive substances and excessive uncondensed steam from entering the water ring vacuum pump and limiting its output.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine technology, and in particular to the vacuum system of steam turbine units in power plants. Background Technology

[0002] In power plants, the vacuum level of steam turbine units has a significant impact on the efficiency and power output of the turbine plant. The condenser, as a crucial component of the steam turbine unit, acts as a cold source, its primary task being to condense the exhaust steam from the turbine into water. The vacuum system, on the other hand, is responsible for establishing a vacuum and removing air and uncondensed steam that leaks in from any leaks during operation, thus maintaining the vacuum level of the condenser.

[0003] However, existing vacuum systems for power plant turbine units have some shortcomings. For example, the operating characteristics of the vacuum system are mutually influential and restrictive with the condenser's operating pressure and temperature. When the condenser vacuum is low and the operating temperature is high, water vapor entering the vacuum system will cause the working fluid to heat up, leading to a decrease in the vacuum system's output. Therefore, this invention proposes a vacuum system for power plant turbine units to address the shortcomings of existing technologies. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a vacuum system for power plant turbine units. By connecting a cooling purifier between the exhaust port of the condenser and the inlet of the water ring vacuum pump, the heat exchange components reduce the air temperature and the content of uncondensed steam, while the purification and adsorption components adsorb impurities in the air, thus preventing high-temperature air containing corrosive substances and excessive uncondensed steam from entering the water ring vacuum pump and restricting its output.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The vacuum system of a power plant turbine unit includes a condenser and a water ring vacuum pump. The inlet end of the condenser is connected to the turbine unit. A cooling and purifying device is connected between the exhaust port end of the condenser and the inlet end of the water ring vacuum pump. The cooling and purifying device includes a tank, a heat exchange assembly, a vacuum pump, and a purification and adsorption assembly. The tank is divided into a heat exchange chamber, a purification and adsorption chamber, and a vacuum chamber by a first partition and a second partition. The heat exchange chamber is equipped with a heat exchange assembly. The purification and adsorption chamber is equipped with a purification and adsorption assembly. The vacuum chamber is equipped with a vacuum pump. The inlet end of the vacuum pump is connected to the interior of the purification and adsorption chamber.

[0007] A further improvement is that the heat exchange assembly includes a coil, a circulating inlet and a circulating outlet, the heat exchange chamber is provided with a coil, the top of the tank at the location of the heat exchange chamber is provided with a circulating inlet, and the bottom of the tank at the location of the heat exchange chamber is provided with a circulating outlet.

[0008] A further improvement is that both the circulating liquid outlet and the circulating liquid outlet are connected to the external refrigeration circulation system of the coolant.

[0009] A further improvement is that: one end of the tank is provided with an air inlet pipe, and the other end of the tank is provided with an air outlet pipe. The air inlet pipe is connected to the exhaust port of the condenser and the inlet of the coil, and the air outlet pipe is connected to the suction chamber and the inlet of the water ring vacuum pump.

[0010] A further improvement is that the purification and adsorption assembly includes an installation ring and an activated carbon adsorption plate. The installation ring is provided with an activated carbon adsorption plate inside, and there are at least two sets of activated carbon adsorption plates. The installation ring is connected to the inner wall of the tank at the purification and adsorption chamber by bolts.

[0011] A further improvement is that: heat dissipation fins are provided on the outer wall of the tank, and multiple sets of heat dissipation fins are provided.

[0012] The beneficial effects of this utility model are as follows: This utility model connects a cooling purifier between the exhaust port of the condenser and the inlet of the water ring vacuum pump. By setting a heat exchange component, a purification adsorption component, and a suction pump inside the tank of the cooling purifier, the air and uncondensed steam coming out of the condenser can be cooled and adsorbed and filtered. The heat exchange component reduces the air temperature and the content of uncondensed steam, and the purification adsorption component adsorbs impurities in the air, preventing high-temperature air containing corrosive substances and excessive uncondensed steam from entering the water ring vacuum pump and restricting the output of the water ring vacuum pump. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the cooling purifier of this utility model;

[0015] Figure 3 This is a three-dimensional schematic diagram of the purification and adsorption component structure of this utility model.

[0016] The components include: 1. Condenser; 2. Water ring vacuum pump; 3. Cooling purifier; 301. Tank; 302. Air pump; 303. Heat exchange chamber; 304. Purification adsorption chamber; 305. Air extraction chamber; 306. Coil; 307. Circulation inlet; 308. Circulation outlet; 309. Mounting ring; 3010. Activated carbon adsorption plate; 4. First partition; 5. Second partition; 6. Air inlet pipe; 7. Air outlet pipe; 8. Heat dissipation fins. Detailed Implementation

[0017] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0018] Example 1

[0019] according to Figure 1-3 As shown, this embodiment proposes a vacuum system for a power plant turbine unit, including a condenser 1 and a water ring vacuum pump 2. The inlet end of the condenser 1 is connected to the turbine unit, and a cooling purifier 3 is connected between the exhaust port end of the condenser 1 and the inlet end of the water ring vacuum pump 2. The cooling purifier 3 includes a tank 301, a heat exchange assembly, a vacuum pump 302, and a purification adsorption assembly. The tank 301 is divided into a heat exchange chamber 303, a purification adsorption chamber 304, and a vacuum chamber 305 by a first partition 4 and a second partition 5. The heat exchange chamber 303 is equipped with a heat exchange assembly, the purification adsorption chamber 304 is equipped with a purification adsorption assembly, and the vacuum chamber 305 is equipped with a vacuum pump 302. The inlet end of the vacuum pump 302 is connected to the interior of the purification adsorption chamber 304.

[0020] In the operation of the vacuum system of the power plant turbine unit of this utility model, the air and uncondensed steam in the condenser 1 are drawn into the cooling purifier 3 by the suction pump 302. First, the air and uncondensed steam enter the heat exchange components for heat exchange. The cooled air enters the purification adsorption chamber 304 and is purified by the purification adsorption components, filtering out harmful substances in the air. Then, the purified air enters the suction chamber 305 and is finally drawn by the water ring vacuum pump 2. The cooling and purification of the air entering the water ring vacuum pump 2 can improve the operating efficiency of the water ring vacuum pump 2, avoid corrosion of the water ring vacuum pump 2, and help to extend the service life of the water ring vacuum pump 2.

[0021] Example 2

[0022] according to Figure 1-3 As shown, this embodiment proposes a vacuum system for a power plant turbine unit. The heat exchange assembly includes a coil 306, a circulating liquid inlet 307, and a circulating liquid outlet 308. The coil 306 is installed inside the heat exchange chamber 303. The circulating liquid inlet 307 is located at the top of the tank 301 at the location of the heat exchange chamber 303, and the circulating liquid outlet 308 is located at the bottom of the tank 301 at the location of the heat exchange chamber 303. Air and uncondensed steam in the condenser 1 enter the coil 306 and are cooled by heat exchange with the coolant installed inside the heat exchange chamber 303. In this invention, a drainage system is also connected to the coil 306 to drain the water generated by condensation in the coil 306.

[0023] Both the circulation outlet 308 and the external refrigeration circulation system are connected to the external refrigeration circulation system. The external refrigeration circulation system cools and circulates the coolant inside the heat exchange chamber 303, thus maintaining the heat exchange efficiency of the coolant inside the heat exchange chamber 303.

[0024] One end of the tank body 301 is provided with an air inlet pipe 6, and the other end of the tank body 301 is provided with an air outlet pipe 7. The air inlet pipe 6 is connected to the exhaust port end of the condenser 1 and the inlet of the coil 306, and the air outlet pipe 7 is connected to the suction chamber 305 and the inlet end of the water ring vacuum pump 2.

[0025] The purification and adsorption assembly includes a mounting ring 309 and activated carbon adsorption plates 3010. The mounting ring 309 houses the activated carbon adsorption plates 3010, and at least two sets of these plates are provided. The mounting ring 309 is connected to the inner wall of the tank 301 at the purification and adsorption chamber 304 by bolts. The detachable mounting ring 309 facilitates disassembly for periodic replacement of the purification and adsorption assembly. Multiple sets of activated carbon adsorption plates 3010 effectively purify harmful substances in the air, preventing them from entering the water ring vacuum pump 2 and corroding it.

[0026] The outer wall of the tank 301 is provided with heat dissipation fins 8, and multiple sets of heat dissipation fins 8 are provided. By setting heat dissipation fins 8, the cooling effect of the cooling purifier 3 can be further improved.

[0027] This invention connects a cooling purifier 3 between the exhaust port of the condenser 1 and the inlet of the water ring vacuum pump 2. By installing a heat exchange component, a purification adsorption component, and a vacuum pump 302 inside the tank 301 of the cooling purifier 3, the air and uncondensed steam coming out of the condenser 1 can be cooled and filtered by adsorption. The heat exchange component reduces the air temperature and the content of uncondensed steam, while the purification adsorption component adsorbs impurities in the air, preventing high-temperature air containing corrosive substances and excessive uncondensed steam from entering the water ring vacuum pump 2 and restricting the output of the water ring vacuum pump 2.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vacuum system of a steam turbine unit of a power plant, comprising a condenser (1) and a water ring vacuum pump (2), characterized in that: The inlet end of the condenser (1) is connected to the turbine unit. A cooling purifier (3) is connected between the exhaust port end of the condenser (1) and the inlet end of the water ring vacuum pump (2). The cooling purifier (3) includes a tank (301), a heat exchange component, a vacuum pump (302), and a purification adsorption component. The tank (301) is divided into a heat exchange chamber (303), a purification adsorption chamber (304), and a vacuum chamber (305) by a first partition (4) and a second partition (5). The heat exchange chamber (303) is equipped with a heat exchange component. The purification adsorption chamber (304) is equipped with a purification adsorption component. The vacuum chamber (305) is equipped with a vacuum pump (302). The inlet end of the vacuum pump (302) is connected to the interior of the purification adsorption chamber (304).

2. The vacuum system for a steam turbine of a power plant of claim 1, wherein: The heat exchange assembly includes a coil (306), a circulation inlet (307), and a circulation outlet (308). The heat exchange chamber (303) is equipped with a coil (306). The top of the tank (301) at the location of the heat exchange chamber (303) is equipped with a circulation inlet (307), and the bottom of the tank (301) at the location of the heat exchange chamber (303) is equipped with a circulation outlet (308).

3. The vacuum system for a power plant turbine unit according to claim 2, characterized in that: Both the circulating liquid outlet (308) and the circulating liquid outlet (308) are connected to the external refrigeration circulation system of the coolant.

4. The vacuum system for a power plant turbine unit according to claim 1, characterized in that: One end of the tank (301) is provided with an air inlet pipe (6), and the other end of the tank (301) is provided with an air outlet pipe (7). The air inlet pipe (6) is connected to the exhaust port of the condenser (1) and the inlet of the coil (306). The air outlet pipe (7) is connected to the suction chamber (305) and the inlet of the water ring vacuum pump (2).

5. The vacuum system for a power plant turbine unit according to claim 1, characterized in that: The purification and adsorption assembly includes an installation ring (309) and an activated carbon adsorption plate (3010). The installation ring (309) is provided with an activated carbon adsorption plate (3010) inside. There are at least two sets of activated carbon adsorption plates (3010). The installation ring (309) is connected to the inner wall of the tank (301) at the purification and adsorption chamber (304) by bolts.

6. The vacuum system for a power plant turbine unit according to claim 1, characterized in that: The outer wall of the tank (301) is provided with heat dissipation fins (8), and the heat dissipation fins (8) are provided in multiple sets.

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