Steam recycling equipment for nuclear power plant

Abstract

The utility model discloses a nuclear power plant steam recycling device which comprises a drain container, a public pipeline, a first drain pipeline and a second drain pipeline, one end of the first drain pipeline far away from the public pipeline is connected with a high-pressure heater, and one end of the second drain pipeline far away from the public pipeline is connected with a condenser. A first pressure gauge, a first check valve, a first pressure regulating valve, a first isolating valve, a first regulating valve and a second isolating valve are sequentially arranged on the first drainage pipeline. And a second pressure gauge, a second check valve, a second pressure regulating valve, a third isolating valve, a second regulating valve and a fourth isolating valve are sequentially arranged on the second drain pipeline. According to the steam recycling equipment for the nuclear power plant, the water drainage amount and the water drainage pressure can be adjusted, impact on the equipment caused by the too large water drainage amount and the too large water drainage pressure can be avoided, it is ensured that the equipment safely runs and is not damaged, and water drainage can be effectively monitored through the arranged pressure meter.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power technology, and in particular to a steam reuse device for nuclear power plants. Background Technology

[0002] When the steam turbine generator of a nuclear power plant is operating, it produces a portion of water. This water is relatively low in temperature, but direct discharge would be wasteful. Therefore, this water is reused by sending it to the high-pressure heater and / or condenser. However, the water flow pipeline currently lacks monitoring of this water, resulting in excessive water flow and pressure, which affects the high-pressure heater and / or condenser equipment. The high-pressure heater and condenser equipment are expensive to build and have high maintenance and replacement costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a steam reuse device for nuclear power plants.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a nuclear power plant steam reuse equipment, including a condensate container, a common pipeline connected to the condensate container, and a first condensate pipeline and a second condensate pipeline respectively connected to the common pipeline. The end of the first condensate pipeline away from the common pipeline is connected to a high-pressure heater, and the end of the second condensate pipeline away from the common pipeline is connected to a condenser.

[0005] The first drainage pipe is provided with a first pressure gauge, a first check valve, a first pressure regulating valve, a first isolation valve, a first regulating valve, and a second isolation valve in sequence from the end closest to the common pipe to the end furthest from the common pipe;

[0006] The second drainage pipe is provided with a second pressure gauge, a second check valve, a second pressure regulating valve, a third isolation valve, a second regulating valve and a fourth isolation valve in sequence from the end closest to the public pipe to the end furthest from the public pipe.

[0007] In some embodiments, a first flow meter is provided at one end of the first drainage pipe near the common pipe.

[0008] In some embodiments, a second flow meter is provided at one end of the second drainage pipe near the common pipe.

[0009] In some embodiments, a third flow meter is provided at one end of the public pipe near the hydrophobic container.

[0010] In some embodiments, the hydrophobic container is a horizontal hydrophobic tank.

[0011] In some embodiments, the hydrophobic container is provided with at least one level gauge.

[0012] In some embodiments, the hydrophobic container is provided with at least one first temperature sensor.

[0013] In some embodiments, at least one second temperature sensor is provided on the first hydrophobic conduit.

[0014] In some embodiments, the second hydrophobic conduit is provided with at least one third temperature sensor.

[0015] In some embodiments, the first drainage pipe has a diameter of 12 inches, and the second drainage pipe has a diameter of 10 inches.

[0016] The present invention offers the following advantages: The nuclear power plant steam reuse equipment includes a condensate container, a common pipeline connected to the condensate container, and a first condensate pipe and a second condensate pipe respectively connected to the common pipeline. The end of the first condensate pipe furthest from the common pipeline is connected to a high-pressure heater, and the end of the second condensate pipe furthest from the common pipeline is connected to a condenser. The first condensate pipe is sequentially equipped with a first pressure gauge, a first check valve, a first pressure regulating valve, a first isolation valve, a first regulating valve, and a second isolation valve, arranged from the end closest to the common pipeline to the end furthest from the common pipeline. The first pressure gauge monitors the condensate pressure on the first condensate pipe, the first check valve prevents backflow of condensate, and the first pressure regulating valve appropriately adjusts the condensate pressure on the first condensate pipe to prevent excessive pressure from impacting the first pressure regulating valve and affecting its normal operation. The first and second isolation valves provide boundary isolation, and when the first regulating valve needs replacement or maintenance, they can separate the upstream and downstream sides of the first regulating valve. The first regulating valve can adjust the flow rate of the condensate in the first condensate pipe to prevent the condensate from impacting the high-pressure heater.

[0017] The second drain pipe is equipped with, sequentially from the end closest to the common pipe to the end furthest from the common pipe, a second pressure gauge, a second check valve, a second pressure regulating valve, a third isolation valve, a second regulating valve, and a fourth isolation valve. The second pressure gauge monitors the drain water pressure in the second drain pipe. The second check valve prevents backflow of the drain water. The second pressure regulating valve appropriately adjusts the drain water pressure in the second drain pipe to prevent excessive pressure from impacting the second regulating valve and affecting its normal operation. The third and fourth isolation valves provide boundary isolation, and when the second regulating valve needs replacement or maintenance, they can separate the upstream and downstream sides of the second regulating valve. The second regulating valve adjusts the flow rate and velocity of the drain water in the second drain pipe to prevent the drain water from impacting the condenser.

[0018] The steam reuse equipment in this nuclear power plant can regulate the amount and pressure of condensate, which can prevent excessive condensate flow and pressure from impacting the equipment, ensuring safe operation without damage. In addition, pressure gauges can be installed to effectively monitor the condensate flow. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of a nuclear power plant steam reuse device in some embodiments of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of a nuclear power plant steam reuse device in some other embodiments of this utility model. Detailed Implementation

[0022] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0023] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0025] See Figure 1 This utility model discloses a steam reuse device for a nuclear power plant, including a condensate container 10, a common pipe 20 connected to the condensate container 10, and a first condensate pipe 30 and a second condensate pipe 40 respectively connected to the common pipe 20. The end of the first condensate pipe 30 away from the common pipe 20 is connected to a high-pressure heater 100, and the end of the second condensate pipe 40 away from the common pipe 20 is connected to a condenser 200.

[0026] The first drain pipe 30 is provided with a first pressure gauge 31, a first check valve 32, a first pressure regulating valve 33, a first isolation valve 34, a first regulating valve 35, and a second isolation valve 36 in sequence from the end closest to the common pipe 20 to the end furthest from the common pipe 20. The first pressure gauge 31 can monitor the drain water pressure on the first drain pipe 30, the first check valve 32 can prevent backflow of drain water, and the first pressure regulating valve 33 can appropriately regulate the drain water pressure on the first drain pipe 30 to avoid excessive water pressure impacting the first pressure regulating valve 33 and affecting its normal operation.

[0027] The first isolation valve 34 and the second isolation valve 36 can serve as boundary isolation. When the first regulating valve 35 needs replacement or maintenance, the first isolation valve 34 and the second isolation valve 36 can separate the upstream and downstream sides of the first regulating valve 35. The first isolation valve 34 and the second isolation valve 36 can be electrically operated isolation valves. The first regulating valve 35 can adjust the flow rate of the condensate from the first drain pipe 30, preventing the condensate from impacting the high-pressure heater 100.

[0028] The second drain pipe 40 is equipped with, sequentially from the end closest to the common pipe 20 to the end furthest from the common pipe 20, a second pressure gauge 41, a second check valve 42, a second pressure regulating valve 43, a third isolation valve 44, a second regulating valve 45, and a fourth isolation valve 46. The second pressure gauge 41 monitors the drain water pressure on the second drain pipe 40, the second check valve 42 prevents backflow of drain water, and the second pressure regulating valve 43 appropriately adjusts the drain water pressure on the second drain pipe 40 to prevent excessive water pressure from impacting the second regulating valve 45 and affecting its normal operation.

[0029] The third isolation valve 44 and the fourth isolation valve 46 can serve as boundary isolation. When the second regulating valve 45 needs replacement or maintenance, the third isolation valve 44 and the fourth isolation valve 46 can separate the upstream and downstream sides of the second regulating valve 45. The third isolation valve 44 and the fourth isolation valve 46 can be electrically operated isolation valves. The second regulating valve 45 can adjust the flow rate and velocity of the condensate from the second drain pipe 40, preventing the condensate from impacting the condenser 200.

[0030] In some embodiments, a first flow meter 37 is provided at one end of the first drainage pipe 30 near the common pipe 20, and the first flow meter 37 can monitor the drainage flow rate on the first drainage pipe 30. The number and location of the first flow meters 37 can be selected according to actual needs, and are not specifically limited here.

[0031] In some embodiments, a second flow meter 47 is provided on one end of the second drainage pipe 40 near the common pipe 20, and the second flow meter 47 can monitor the drainage flow rate on the second drainage pipe 40. The number and location of the second flow meters 47 can be selected according to actual needs, and are not specifically limited here.

[0032] like Figure 2As shown, in some embodiments, a third flow meter 21 is provided at one end of the common pipe 20 near the drainage container 10. The third flow meter 21 is used to monitor the drainage flow rate of the common pipe 20. When the common pipe 20 is equipped with the third flow meter 21, the first drainage pipe 30 may not be equipped with the first flow meter 37, and the second drainage pipe 40 may not be equipped with the second flow meter 47. Of course, in some embodiments, when the common pipe 20 is equipped with the third flow meter 21, the first drainage pipe 30 is equipped with the first flow meter 37, and the second drainage pipe 40 is equipped with the second flow meter 47, allowing for multi-location measurement of the drainage flow rate for better monitoring.

[0033] In some embodiments, the condensate drain container 10 is used to input first-stage reheat condensate from a nuclear power plant turbine. The condensate drain container 10 is a horizontal condensate drain tank. The condensate drain container 10 is provided with at least one level gauge 11, which may be a magnetic reversing level gauge.

[0034] In some embodiments, the hydrophobic container 10 is provided with at least one first temperature sensor 12 for monitoring the hydrophobic temperature inside the hydrophobic container 10.

[0035] In some embodiments, at least one second temperature sensor 38 is provided on the first drainage pipe 30. The second temperature sensor 38 is used to monitor the drainage temperature of the first drainage pipe 30. The number and location of the second temperature sensor 38 can be selected according to actual needs and are not specifically limited here.

[0036] In some embodiments, at least one third temperature sensor 48 is provided on the second drainage pipe 40. The third temperature sensor 48 is used to monitor the drainage temperature of the second drainage pipe 40. The number and location of the third temperature sensor 48 can be selected according to actual needs and are not specifically limited here.

[0037] In some embodiments, the first drainage pipe 30 has a diameter of 12 inches, and the second drainage pipe 40 has a diameter of 10 inches. The common pipe 20 may also have a diameter of 12 inches.

[0038] In some embodiments, the nuclear power plant steam reuse equipment can regulate the condensate flow rate and condensate pressure to avoid excessive condensate flow rate and condensate pressure from impacting the equipment, ensuring safe operation of the equipment without damage, and the installation of flow meters and pressure gauges can effectively monitor the condensate flow.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0040] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A steam reuse device for nuclear power plants, characterized in that, It includes a hydrophobic container (10), a common pipe (20) connected to the hydrophobic container (10), and a first hydrophobic pipe (30) and a second hydrophobic pipe (40) respectively connected to the common pipe (20). The end of the first hydrophobic pipe (30) away from the common pipe (20) is connected to a high-pressure heater (100), and the end of the second hydrophobic pipe (40) away from the common pipe (20) is connected to a condenser (200). The first drainage pipe (30) is provided with a first pressure gauge (31), a first check valve (32), a first pressure regulating valve (33), a first isolation valve (34), a first regulating valve (35) and a second isolation valve (36) in sequence from the end closer to the public pipe (20) to the end farther away from the public pipe (20); The second drainage pipe (40) is provided with a second pressure gauge (41), a second check valve (42), a second pressure regulating valve (43), a third isolation valve (44), a second regulating valve (45) and a fourth isolation valve (46) in sequence from the end closer to the common pipe (20) to the end farther away from the common pipe (20).

2. The nuclear power plant steam reuse equipment according to claim 1, characterized in that, A first flow meter (37) is provided at one end of the first drainage pipe (30) near the common pipe (20).

3. The nuclear power plant steam reuse equipment according to claim 1 or 2, characterized in that, A second flow meter (47) is provided at one end of the second drainage pipe (40) near the common pipe (20).

4. The nuclear power plant steam reuse equipment according to claim 1, characterized in that, A third flow meter (21) is provided at one end of the public pipe (20) near the hydrophobic container (10).

5. The nuclear power plant steam reuse equipment according to claim 1, characterized in that, The hydrophobic container (10) is a horizontal hydrophobic tank.

6. The nuclear power plant steam reuse equipment according to claim 1, characterized in that, The hydrophobic container (10) is equipped with at least one level gauge (11).

7. The nuclear power plant steam reuse equipment according to claim 1, characterized in that, The hydrophobic container (10) is provided with at least one first temperature sensor (12).

8. The nuclear power plant steam reuse equipment according to claim 1, characterized in that, At least one second temperature sensor (38) is provided on the first drainage pipe (30).

9. The nuclear power plant steam reuse equipment according to claim 1, characterized in that, At least one third temperature sensor (48) is provided on the second drainage pipe (40).

10. The nuclear power plant steam reuse equipment according to claim 1, characterized in that, The first drainage pipe (30) has a diameter of 12 inches, and the second drainage pipe (40) has a diameter of 10 inches.

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