Non-condensable gas condensing device of air-cooled condenser
By using a non-condensable gas condenser in an air-cooled condenser to separate and cool the exhaust steam, the problem of reduced heat exchange efficiency of the air-cooled condenser under high-temperature conditions is solved, thus achieving optimized economic operation and energy recovery of the unit.
Patent Information
- Application Number
- CN202511144552.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2025-10-31
AI Technical Summary
In the high-temperature environment of summer, the heat exchange efficiency of the air-cooled condenser decreases, resulting in an abnormally high temperature of the exhaust steam after condensation, which affects the power generation capacity of the unit and the economic operating efficiency of the power plant, and increases the power generation operating cost.
Design an air-cooled condenser non-condensable gas condensation device that cools the exhaust steam and recovers heat through a gas-liquid separation and cooling mechanism. The device includes an air-cooled condenser unit, a first gas-liquid separator, a condenser body, and a second gas-liquid separator. A cooling water tank and a recovery mechanism are used to separate and cool the exhaust steam to ensure that the exhaust steam temperature is reduced to a suitable range.
It effectively reduces the temperature of exhaust steam, optimizes the operating conditions of the vacuum pump unit, improves the economic operation capability of the unit, reduces operating costs, and avoids energy waste.
Smart Images
Figure CN120868792A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of thermal power generation technology, and in particular to a non-condensable gas condensation device for an air-cooled condenser. Background Technology
[0002] Large units in thermal power plants typically use air-cooled condensers (ACC) to condense the exhaust steam from the steam turbine, and work with vacuum pump units to maintain the high vacuum operation of the condenser. This configuration is a typical design widely used in modern thermal power plants.
[0003] However, in the high-temperature environment of summer, the rise in ambient temperature will directly lead to a decrease in the heat exchange efficiency of the air-cooled condenser, resulting in an abnormally high temperature of the exhaust steam after condensation. This situation will have a dual impact on the vacuum pump unit system: on the one hand, it increases the workload of the vacuum pump unit, and on the other hand, it deteriorates its operating conditions, which may make it difficult to maintain the unit's vacuum level at the optimal level, forcing the unit to operate at a reduced load. This not only affects the unit's power generation capacity, but also seriously reduces the overall economic operating efficiency of the power plant, leading to an increase in power generation operating costs.
[0004] Therefore, in response to the situation where the abnormal rise in exhaust steam temperature after condensation in the existing air-cooled condenser affects the normal operation of the unit, a non-condensable gas condensation device for the air-cooled condenser can be designed. By using water cooling, the non-condensable gas in the air-cooled condenser can be cooled in a timely manner and the heat can be recovered, thereby further optimizing the operating conditions of the unit's vacuum pump unit and improving the unit's economic operation capability. Summary of the Invention
[0005] To overcome the problem that rising ambient temperature directly leads to a decrease in the heat exchange efficiency of air-cooled condensers, resulting in an abnormally high temperature of the condensed exhaust steam, which in turn affects the power generation capacity of the unit, further reduces the overall economic operating efficiency of the power plant, and increases the power generation operating cost, this invention is proposed.
[0006] The technical solution of the present invention is as follows: a non-condensable gas condensing device for an air-cooled condenser, comprising an air-cooled condenser unit, a first gas-liquid separator, a condenser body, and a second gas-liquid separator. The exhaust steam condensed by the air-cooled condenser unit is transported to the first gas-liquid separator for gas-liquid separation. The separated gas is transported to the condenser body, and the condenser body is controlled by a cooling mechanism to cool the high-temperature exhaust steam. A second gas-liquid separator is provided behind the condenser body. The exhaust steam cooled by the condenser body is subjected to gas-liquid separation through the second gas-liquid separator. The non-condensable gas separated by the second gas-liquid separator is transported to a vacuum pump unit to maintain vacuum operation.
[0007] Preferably, an air-cooled condenser unit is used to condense the exhaust steam from the steam engine. Since the temperature of the condensed exhaust steam reaches 60°C, the high-temperature exhaust steam is separated into gas and liquid by a first gas-liquid separator. The condenser body is controlled by a cooling mechanism to cool the separated high-temperature exhaust steam down to 30°C. The high-temperature liquid separated from the condenser and the high-temperature liquid generated by the heat exchange of the cooling mechanism are uniformly recovered. Then, a second gas-liquid separator is used to separate the exhaust steam cooled by the condenser body. The separated low-temperature non-condensable gas is transported to the vacuum pump unit to maintain vacuum operation. This achieves timely cooling of the non-condensable gas in the air-cooled condenser and heat recovery, thereby further optimizing the operating conditions of the vacuum pump unit and improving the unit's economic operation capability.
[0008] Preferably, the exhaust steam from the steam engine is condensed by an air condenser unit, and the high-temperature water separated by the first gas-water separator and the high-temperature water obtained by heat exchange with the main body of the condenser are uniformly recycled through a recovery mechanism.
[0009] Preferably, the cooling mechanism includes a cooling water tank and a water injection pipe. The cooling water tank is located on the outside of the condenser body, and the top of the cooling water tank is equipped with a water injection pipe that is controlled to open and close by an inlet valve.
[0010] Preferably, the cooling mechanism also includes a cooling water inlet pipe. The cooling water tank is provided with a cooling water inlet pipe that is controlled to open and close by an inlet valve. The other end of the cooling water inlet pipe is connected to the cooling water inlet of the condenser body.
[0011] Preferably, the recovery mechanism includes a low-temperature water tank and a high-temperature water tank. The low-temperature water tank and the high-temperature water tank are arranged on the outside of the condenser body, and the low-temperature water tank and the high-temperature water tank are symmetrically arranged on both sides of the condenser body with the cooling water tank.
[0012] Preferably, the recovery mechanism also includes a first return water pipe, a second return water pipe, and a third return water pipe. The high-temperature water obtained by separating the exhaust steam in the first gas-water separator is connected to the high-temperature water tank through the first return water pipe. The high-temperature water obtained by heat exchange of cooling water in the condenser body is connected to the high-temperature water tank through the second return water pipe. The condensate obtained by separating the exhaust steam in the second gas-water separator is connected to the low-temperature water tank through the third return water pipe.
[0013] Preferably, the recycling mechanism also includes a drain pipe, with drain pipes installed on the outside of the low-temperature water tank and the high-temperature water tank, and the drain pipes are controlled to open and close by a solenoid valve.
[0014] Preferably, the air-cooled condenser unit delivers the condensed exhaust steam to the first gas-liquid separator through the first exhaust pipe. The first gas-liquid separator delivers the separated exhaust steam to the condenser body through the second exhaust pipe. The condenser body delivers the cooled gas to the second gas-liquid separator through the third exhaust pipe. The second gas-liquid separator delivers the non-condensable gas to the vacuum pump unit through the fourth exhaust pipe.
[0015] Preferably, a reflux assembly is provided between the condenser body and the second gas-liquid separator. The reflux assembly includes a temperature sensor and a controller. A temperature sensor is provided on the outside of the third exhaust pipe, and a controller is provided on the outside of the second gas-liquid separator. The temperature sensor transmits the detected exhaust steam temperature data in the third exhaust pipe to the controller. The controller sets the maximum temperature of the exhaust steam in the third exhaust pipe to 35°C. The controller compares and analyzes the acquired temperature data with the set value.
[0016] Preferably, the reflux assembly also includes a regulating valve and a reflux pipe. A regulating valve is installed on the outside of the third exhaust pipe, and the regulating valve is located behind the temperature sensor. When the temperature sensor detects that the exhaust steam temperature in the third exhaust pipe is higher than 35°C, the controller controls the regulating valve to open the passage between the reflux pipe and the third exhaust pipe. The other end of the reflux pipe is connected to the second exhaust pipe.
[0017] The beneficial effects of this invention are: 1. During unit operation, the exhaust steam from the steam turbine is condensed by the air-cooled condenser unit. Since the temperature of the exhaust steam after condensation reaches 60°C, the high-temperature exhaust steam undergoes gas-liquid separation by the first gas-liquid separator. The separated high-temperature exhaust steam is then cooled down to 30°C by the main body of the condenser. The second gas-liquid separator then performs gas-liquid separation on the exhaust steam cooled by the main body of the condenser. The separated low-temperature non-condensable gas is sent to the vacuum pump unit to maintain vacuum operation. This addresses the issue that rising ambient temperature directly leads to a decrease in the heat exchange efficiency of the air-cooled condenser, causing an abnormal increase in the temperature of the condensed exhaust steam, which affects the unit's power generation capacity and further reduces the overall economic operating efficiency of the power plant, resulting in increased power generation operating costs. This improves the unit's economic operating capability. 2. When cooling exhaust steam, the high-temperature liquid separated by the first gas-water separator and the high-temperature liquid generated by the heat exchange of the cooling mechanism are recycled together, and the low-temperature liquid separated by the second gas-water separator is recycled together. The high-temperature and low-temperature liquids are stored separately to further reduce the unit's operating costs, improve energy utilization, and avoid energy waste. Attached Figure Description
[0018] Figure 1 The diagram shown is a three-dimensional structural schematic of a non-condensable gas condensation device for an air condenser according to the present invention. Figure 2 The diagram shown is a first three-dimensional structural schematic of the cooling mechanism and recovery mechanism of an air condenser non-condensable gas condensation device according to the present invention. Figure 3 The diagram shown is a second three-dimensional structural schematic of the cooling mechanism and recovery mechanism of an air condenser non-condensable gas condensation device according to the present invention. Figure 4 The diagram shown is a three-dimensional structural schematic of the reflux assembly of a non-condensable gas condensation device for an air condenser according to the present invention. Figure 5 The diagram shown is a schematic representation of the working process of a non-condensable gas condensation device for an air condenser according to the present invention. Explanation of reference numerals in the attached drawings: 1. Air-cooled condenser unit; 101. First exhaust pipe; 102. Second exhaust pipe; 103. Third exhaust pipe; 104. Fourth exhaust pipe; 2. First gas-liquid separator; 3. Condenser body; 4. Second gas-liquid separator; 5. Vacuum pump unit; 601. Cooling water tank; 602. Water injection pipe; 603. Cooling water inlet pipe; 701. Low-temperature water tank; 702. High-temperature water tank; 703. First return water pipe; 704. Second return water pipe; 705. Third return water pipe; 706. Drain pipe; 801. Temperature sensor; 802. Controller; 803. Regulating valve; 804. Return pipe. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Please see Figure 1 This invention provides an embodiment: a non-condensable gas condensing device for an air-cooled condenser, comprising an air-cooled condenser unit 1, a first gas-liquid separator 2, a condenser body 3, and a second gas-liquid separator 4. Steam exhaust from the steam engine is condensed by the air-cooled condenser unit 1. The condensed exhaust steam is then transported to the first gas-liquid separator 2 for gas-liquid separation. The separated gas is transported to the condenser body 3. A cooling mechanism controls the condenser body 3 to cool the high-temperature exhaust steam. The high-temperature water separated by the first gas-liquid separator 2 and the high-temperature water obtained by heat exchange with the condenser body 3 are uniformly recovered through a recovery mechanism. A second gas-liquid separator 4 is located behind the condenser body 3. The second gas-liquid separator 4 performs gas-liquid separation on the cooled exhaust steam from the condenser body 3. The non-condensable gas separated by the second gas-liquid separator 4 is transported to a vacuum pump unit 5 to maintain vacuum operation.
[0021] Please see Figure 2 and Figure 3In this embodiment, the cooling mechanism includes a cooling water tank 601, a water injection pipe 602, and a cooling water inlet pipe 603. The cooling water tank 601 is provided on the outside of the condenser body 3. The top of the cooling water tank 601 is provided with a water injection pipe 602 that is controlled to open and close by a water inlet valve. The cooling water inlet pipe 603 is provided on the outside of the cooling water tank 601 that is controlled to open and close by a water inlet valve. The other end of the cooling water inlet pipe 603 is connected to the cooling water inlet of the condenser body 3. Cooling water is injected into the cooling water tank 601 through the water injection pipe 602. When the unit is running, the valve of the cooling water inlet pipe 603 is opened, and the cooling water in the cooling water tank 601 is transported to the condenser body 3 for heat exchange treatment, thereby cooling the high-temperature exhaust steam. The recovery mechanism includes a low-temperature water tank 701, a high-temperature water tank 702, a first return water pipe 703, a second return water pipe 704, a third return water pipe 705, and a drain pipe 706. The low-temperature water tank 701 and the high-temperature water tank 702 are located on the outside of the condenser body 3. The low-temperature water tank 701 and the high-temperature water tank 702 are symmetrically arranged on both sides of the condenser body 3 with the cooling water tank 601. The high-temperature water obtained from separating the exhaust steam by the first gas-water separator 2 is connected to the high-temperature water tank 702 through the first return water pipe 703. The high-temperature water obtained from the cooling water heat exchange inside the condenser body 3 is connected to the high-temperature water tank 702 through the second return water pipe 704. The condensate obtained from separating the exhaust steam by the second gas-water separator 4 is connected to the low-temperature water tank 701 through the third return water pipe 705. The low-temperature water tank 701 and the high-temperature water tank 702 are connected to the condenser body 3. A drain pipe 706 is installed on the outside of 2. The drain pipe 706 is controlled to open and close by a solenoid valve. The high-temperature liquid obtained by separating the exhaust steam in the first gas-water separator 2 is transported to the high-temperature water tank 702 through the first return water pipe 703. The high-temperature water obtained by heat exchange of cooling water in the condenser body 3 is also transported to the high-temperature water tank 702 at the same time through the second return water pipe 704. The high-temperature water is stored in the high-temperature water tank 702. The condensate obtained by separating the exhaust steam in the second gas-water separator 4 is transported to the low-temperature water tank 701 through the third return water pipe 705. The low-temperature water tank 701 is used to store the cooled low-temperature liquid. The valve of the drain pipe 706 can be flexibly controlled to open and close according to actual needs. The drain pipe 706 can be flexibly opened to discharge liquids of different temperatures in the low-temperature water tank 701 and the high-temperature water tank 702 respectively.
[0022] Please see Figure 1 and Figure 3In this embodiment, the air-cooled condenser unit 1 transports the condensed exhaust steam to the first gas-liquid separator 2 through the first exhaust pipe 101. The first gas-liquid separator 2 transports the separated exhaust steam to the condenser body 3 through the second exhaust pipe 102. The condenser body 3 transports the cooled gas to the second gas-liquid separator 4 through the third exhaust pipe 103. The second gas-liquid separator 4 transports the non-condensable gas to the vacuum pump unit 5 through the fourth exhaust pipe 104. The high-temperature exhaust steam condensed by the air-cooled condenser unit 1 is transported to the first gas-liquid separator 2 through the first exhaust pipe 101. The high-temperature exhaust steam separated by the first gas-liquid separator 2 is transported to the condenser body 3 through the second exhaust pipe 102. The exhaust steam cooled by the condenser body 3 is transported to the second gas-liquid separator 4 through the third exhaust pipe 103. Finally, the cooled non-condensable gas is transported to the vacuum pump unit 5 through the fourth exhaust pipe 104, ensuring the orderly operation of the device.
[0023] Please see Figure 5In this embodiment, a reflux assembly is provided between the condenser body 3 and the second gas-liquid separator 4. The reflux assembly includes a temperature sensor 801, a controller 802, a regulating valve 803, and a reflux pipe 804. A temperature sensor 801 is located on the outside of the third exhaust pipe 103, and a controller 802 is located on the outside of the second gas-liquid separator 4. The temperature sensor 801 transmits the detected exhaust steam temperature data in the third exhaust pipe 103 to the controller 802. The controller 802 sets the maximum exhaust steam temperature in the third exhaust pipe 103 to 35°C. The controller 802 compares and analyzes the acquired temperature data with the set value. A regulating valve 803 is located on the outside of the third exhaust pipe 103, downstream of the temperature sensor 801. When the temperature sensor 801 detects that the exhaust steam temperature in the third exhaust pipe 103 is higher than 35°C, the controller 802 controls the regulating valve 803 to open the passage between the reflux pipe 804 and the third exhaust pipe 103. The other end of 4 is connected to the second exhaust pipe 102. The controller 802 sets the maximum temperature of the exhaust steam passing through the third exhaust pipe 103 to 35°C. The temperature sensor 801 detects the temperature of the exhaust steam flowing through the second exhaust pipe 102 in real time and sends the detection data to the controller 802 in real time. When the detected temperature is below 35°C, the controller 802 controls the regulating valve 803 to open the passage of the second exhaust pipe 102 and close the passage between the second exhaust pipe 102 and the return pipe 804. Thus, the low-temperature exhaust steam is transported to the second gas-liquid separator 4 through the second exhaust pipe 102 for secondary gas-liquid separation. When the detected temperature is above 35°C, the controller 802 controls the regulating valve 803 to close the passage of the second exhaust pipe 102 and open the passage between the second exhaust pipe 102 and the return pipe 804. The exhaust steam that is not cooled enough in the second exhaust pipe 102 is transported back to the condenser body 3 through the return pipe 804 for secondary cooling, thereby ensuring that the gas temperature entering the vacuum pump unit 5 is within the low-temperature range.
[0024] When the unit is running, the steam turbine runs and exhausts steam to the air condenser unit 1 for condensation. The temperature of the exhaust steam obtained after condensation reaches 60°C. The condensed exhaust steam is transported to the first gas-liquid separator 2 through the first exhaust pipe 101. The first gas-liquid separator 2 is used to perform gas-liquid separation on the high-temperature exhaust steam. The separated high-temperature exhaust steam is transported to the condenser body 3 through the second exhaust pipe 102. The separated high-temperature liquid is transported to the high-temperature water tank 702 for unified storage through the first return water pipe 703. During the cooling process, the water injection pipe 602 is opened through the control system to inject cooling water into the cooling water tank 601. The control valve of the cooling water inlet pipe 603 is opened to transport the cooling water in the cooling water tank 601 to the condenser body 3 for circulating heat exchange. The cooling water circulates in the condenser body 3 to cool the high-temperature exhaust steam, reducing the exhaust steam temperature to 30°C. The high-temperature water obtained from the cooling water heat exchange is transported to the high-temperature water tank 702 for unified storage through the second return water pipe 704. Subsequently, the cooled exhaust steam is transported to the second gas-liquid separator 4 through the third exhaust pipe 103. At the same time, the controller 802 sets the maximum temperature of the exhaust steam passing through the third exhaust pipe 103 to 35°C. The temperature sensor 801 detects the temperature of the exhaust steam flowing through the second exhaust pipe 102 in real time and sends the detection data to the controller 802 in real time. When the detected temperature is lower than 35°C, the controller 802 controls the regulating valve 803 to open the passage of the second exhaust pipe 102 and close the passage between the second exhaust pipe 102 and the return pipe 804. Thus, the low-temperature exhaust steam is transported to the second gas-liquid separator 4 through the second exhaust pipe 102 for secondary gas-liquid separation. The separated low-temperature liquid is transported to the low-temperature water tank 701 for unified storage through the third return water pipe 705. Finally, the non-condensable gas separated by the second gas-liquid separator 4 is transported to the vacuum pump unit 5 through the fourth exhaust pipe 104 to ensure the normal operation of the unit. When the detected temperature is higher than 35℃, the controller 802 controls the regulating valve 803 to close the passage of the second exhaust pipe 102 and open the passage between the second exhaust pipe 102 and the return pipe 804. The exhaust steam in the second exhaust pipe 102 that is not cooled enough is transported back to the condenser body 3 through the return pipe 804 for secondary cooling. Finally, the control system opens the drain pipe 706 valve according to actual needs to recover the liquid in the low temperature water tank 701 and the high temperature water tank 702 respectively.
[0025] Through the above steps, the exhaust steam from the steam engine is condensed by the air-cooled condenser unit 1. Since the temperature of the condensed exhaust steam reaches 60°C, the high-temperature exhaust steam is separated into gas and liquid by the first gas-liquid separator 2. The condenser body 3 is controlled by the cooling mechanism to cool and reduce the temperature of the separated high-temperature exhaust steam to 30°C. The high-temperature liquid obtained from the separation and the high-temperature liquid generated by the heat exchange of the cooling mechanism are recovered. The exhaust steam cooled by the condenser body 3 is then separated into gas and liquid by the second gas-liquid separator 4. The separated low-temperature non-condensable gas is transported to the vacuum pump unit 5 to maintain vacuum operation, thereby timely cooling of the non-condensable gas in the air-cooled condenser and recovery of heat, thus further optimizing the operating conditions of the vacuum pump unit 5.
[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A non-condensable gas condensing device for an air-cooled condenser, comprising an air-cooled condenser unit (1), characterized in that: It also includes a first gas-water separator (2), a condenser body (3), and a second gas-water separator (4). The exhaust steam after condensation by the air condenser unit (1) is transported to the first gas-water separator (2) for gas-water separation treatment. The separated gas is transported to the condenser body (3). The condenser body (3) is controlled by the cooling mechanism to cool down the high-temperature exhaust steam. A second gas-water separator (4) is set behind the condenser body (3). The exhaust steam after cooling by the condenser body (3) is subjected to gas-water separation treatment through the second gas-water separator (4). The non-condensable gas separated by the second gas-water separator (4) is transported to the vacuum pump unit (5) to maintain vacuum operation.
2. The air-cooled condenser non-condensable gas condensing device according to claim 1, characterized in that: Steam exhaust from the steam engine is condensed by the air condenser unit (1). The high-temperature water obtained by the first gas-water separator (2) and the high-temperature water obtained by heat exchange with the main body of the condenser (3) are uniformly recycled through the recycling mechanism.
3. The air-cooled condenser non-condensable gas condensing device according to claim 2, characterized in that: The cooling mechanism includes a cooling water tank (601) and a water injection pipe (602). The cooling water tank (601) is provided on the outside of the condenser body (3), and the top of the cooling water tank (601) is provided with a water injection pipe (602) that is controlled to open and close by an inlet valve.
4. The air-cooled condenser non-condensable gas condensing device according to claim 3, characterized in that: The cooling mechanism also includes a cooling water inlet pipe (603). A cooling water inlet pipe (603) is provided on the outside of the cooling water tank (601) and is controlled to open and close by an inlet valve. The other end of the cooling water inlet pipe (603) is connected to the cooling water inlet of the condenser body (3).
5. A non-condensable gas condensing device for an air-cooled condenser according to claim 3, characterized in that: The recovery mechanism includes a low-temperature water tank (701) and a high-temperature water tank (702). The low-temperature water tank (701) and the high-temperature water tank (702) are arranged on the outside of the condenser body (3). The low-temperature water tank (701) and the high-temperature water tank (702) are symmetrically arranged on both sides of the condenser body (3) with the cooling water tank (601).
6. The air-cooled condenser non-condensable gas condensing device according to claim 5, characterized in that: The recycling mechanism also includes a first return water pipe (703), a second return water pipe (704) and a third return water pipe (705). The high-temperature water obtained by separating the exhaust steam in the first gas-water separator (2) is connected to the high-temperature water tank (702) through the first return water pipe (703). The high-temperature water obtained by heat exchange of cooling water in the condenser body (3) is connected to the high-temperature water tank (702) through the second return water pipe (704). The condensate obtained by separating the second gas-water separator (4) is connected to the low-temperature water tank (701) through the third return water pipe (705).
7. The air-cooled condenser non-condensable gas condensing device according to claim 6, characterized in that: The recycling mechanism also includes a drain pipe (706), and the drain pipe (706) is provided on the outside of the low temperature water tank (701) and the high temperature water tank (702). The drain pipe (706) is controlled to open and close by a solenoid valve.
8. The air-cooled condenser non-condensable gas condensing device according to claim 1, characterized in that: The air condenser unit (1) transports the condensed exhaust steam to the first gas-water separator (2) through the first exhaust pipe (101). The first gas-water separator (2) transports the separated exhaust steam to the condenser body (3) through the second exhaust pipe (102). The condenser body (3) transports the cooled gas to the second gas-water separator (4) through the third exhaust pipe (103). The second gas-water separator (4) transports the non-condensable gas to the vacuum pump unit (5) through the fourth exhaust pipe (104).
9. A non-condensable gas condensing device for an air-cooled condenser according to claim 8, characterized in that: A reflux assembly is provided between the condenser body (3) and the second gas-water separator (4). The reflux assembly includes a temperature sensor (801) and a controller (802). A temperature sensor (801) is provided on the outside of the third exhaust pipe (103), and a controller (802) is provided on the outside of the second gas-water separator (4). The temperature sensor (801) transmits the detected exhaust steam temperature data in the third exhaust pipe (103) to the controller (802). The controller (802) sets the maximum temperature of the exhaust steam in the third exhaust pipe (103) to 35°C. The controller (802) compares and analyzes the acquired temperature data with the set value.
10. A non-condensable gas condensing device for an air-cooled condenser according to claim 9, characterized in that: The reflux assembly also includes a regulating valve (803) and a reflux pipe (804). The regulating valve (803) is provided on the outside of the third exhaust pipe (103). The regulating valve (803) is located behind the temperature sensor (801). When the temperature sensor (801) detects that the exhaust steam temperature in the third exhaust pipe (103) is higher than 35°C, the regulating valve (803) is controlled by the controller (802) to open the passage between the reflux pipe (804) and the third exhaust pipe (103). The other end of the reflux pipe (804) is connected to the second exhaust pipe (102).