Air-cooled condenser counterflow fan unit finned tube section temperature measuring point arrangement method

Abstract

The application provides a temperature measuring point arrangement method for a counter-flow fan unit finned tube area of an air-cooled condenser, and relates to the technical field of thermal power generation. The method comprises the following steps: dividing the air-cooled condenser into areas to obtain a first parallel-flow area, a second parallel-flow area and a counter-flow area; arranging a first part of temperature measuring points at a position in the first parallel-flow area, which has a first distance from a condensate header and a second distance from a steam distribution pipe, wherein the first distance is smaller than the second distance; arranging a second part of temperature measuring points at a position in the second parallel-flow area, which has the first distance from the condensate header and a third distance from the steam distribution pipe, wherein the number of rows of temperature measuring points in the second part of temperature measuring points is greater than the number of rows of temperature measuring points in the first part of temperature measuring points; and arranging a third part of temperature measuring points in all areas in the counter-flow area. The application solves the technical problem that the temperature of the finned tube in each area cannot be accurately monitored in the prior art, and achieves the technical effect of accurately detecting the temperature in each area.

Description

Technical Field

[0001] This invention relates to the field of thermal power generation technology, specifically to a method for arranging temperature measuring points in the finned tube area of ​​an air-cooled condenser counter-flow fan unit. Background Technology

[0002] Air-cooled condensers are commonly used steam condensation devices in thermal power generating units in arid and water-scarce regions. They consist of co-current and counter-current finned tubes for condensing and recovering steam. In cold winters, the steam inside the finned tubes may condense completely a considerable distance from the outlet, easily leading to condensate freezing and compromising the safety of the finned tubes. Therefore, temperature monitoring of the finned tubes is necessary for antifreeze measures.

[0003] Because the steam flow directions in co-current and counter-current finned tubes differ, the internal temperature conditions and condensate freezing rates differ in winter. Current technology simply divides the air-cooled condenser finned tubes into co-current and counter-current zones, with temperature measuring points arranged identically in both zones. This makes it impossible to accurately monitor the temperature of the co-current zone finned tubes in the counter-current fan unit when the counter-current fan frequency is higher than the co-current fan frequency in winter, increasing the risk of freezing. Therefore, current technology suffers from an unreasonable arrangement of temperature measuring points in the air-cooled condenser finned tubes, making it impossible to accurately monitor the temperature in each zone. Summary of the Invention

[0004] This application provides a method for arranging temperature measuring points in the finned tube area of ​​an air-cooled condenser counter-flow fan unit, which addresses the technical problem in the prior art where the arrangement of temperature measuring points on the finned tubes of an air-cooled condenser is incomplete and cannot accurately monitor the temperature in each area.

[0005] In view of the above problems, this application provides a method for arranging temperature measuring points in the finned tube area of ​​an air-cooled condenser counterflow fan unit.

[0006] The first aspect of this application provides a method for arranging temperature measuring points in the finned tube area of ​​a counter-current fan unit in an air-cooled condenser. The method is applied to an air-cooled condenser, which includes multiple co-current fan units and counter-current fan units. Each co-current fan unit includes multiple first-type co-current zone finned tubes, and each counter-current fan unit includes multiple second-type co-current zone finned tubes and multiple counter-current zone finned tubes. The inlets of the first-type and second-type co-current zone finned tubes are connected to a steam distribution pipe, and their outlets are connected to a condensate header. The inlet of the counter-current zone finned tube is connected to the condensate header, and its outlet is connected to an extraction pipe. The method includes: dividing the air-cooled condenser into regions to obtain a first co-current region, a second co-current region, and a counter-current region, wherein the first co-current region includes the multiple first-type co-current zone finned tubes, and the second co-current region... The domain includes the plurality of second-type co-current zone finned tubes, and the counter-current zone includes the plurality of counter-current zone finned tubes; a first set of temperature measuring points are arranged at positions within the first co-current zone that are at a first distance from the condensate header and at a second distance from the steam distribution pipe, wherein the first distance is less than the second distance; a second set of temperature measuring points are arranged at positions within the second co-current zone that are at the first distance from the condensate header and at a third distance from the steam distribution pipe, wherein the third distance is less than the second distance and greater than the first distance, and the number of rows of temperature measuring points in the second set of temperature measuring points is greater than the number of rows of temperature measuring points in the first set of temperature measuring points; a third set of temperature measuring points are arranged throughout the entire area within the counter-current zone, and each of the first, second, and third sets of temperature measuring points includes multiple temperature measuring points.

[0007] A second aspect of this application provides an air-cooled condenser, comprising: multiple co-current fan units, each co-current fan unit including multiple first-type co-current zone finned tubes; multiple counter-current fan units, each counter-current fan unit including multiple second-type co-current zone finned tubes and multiple counter-current zone finned tubes, wherein the inlets of the first-type co-current zone finned tubes and the second-type co-current zone finned tubes are connected to a steam distribution pipe and the outlets are connected to a condensate header, and the inlet of the counter-current zone finned tubes is connected to the condensate header, and the outlet is connected to an extraction pipe, wherein the multiple first-type co-current zone finned tubes form a first co-current region, the multiple second-type co-current zone finned tubes form a second co-current region, and the multiple counter-current zone finned tubes form a counter-current region; and a first portion of temperature measuring points. The first set of temperature measuring points is located within the first co-current region and has a first distance from the condensate header and a second distance from the steam distribution pipe, wherein the first distance is less than the second distance; the second set of temperature measuring points is located within the second co-current region and has the first distance from the condensate header and a third distance from the steam distribution pipe, wherein the third distance is less than the second distance and greater than the first distance, and the number of rows of temperature measuring points in the second set of temperature measuring points is greater than the number of rows of temperature measuring points in the first set of temperature measuring points; the third set of temperature measuring points is located throughout the entire area of ​​the counter-current region, and each of the first, second, and third sets of temperature measuring points includes multiple temperature measuring points.

[0008] A third aspect of this application provides a temperature measurement point arrangement system for the finned tube area of ​​a counter-current fan unit in an air-cooled condenser. The system includes: a region division module for dividing the air-cooled condenser into regions, obtaining a first co-current region, a second co-current region, and a counter-current region, wherein the first co-current region includes multiple first-type co-current finned tubes, the second co-current region includes multiple second-type co-current finned tubes, and the counter-current region includes multiple counter-current finned tubes; and a first arrangement module for arranging a first portion of temperature measurement points at positions within the first co-current region that are at a first distance from the condensate header and a second distance from the steam distribution pipe. Wherein, the first distance is less than the second distance; the second arrangement module is used to arrange a second part of temperature measuring points in the second co-current region at a position having the first distance from the condensate header and a third distance from the steam distribution pipe, the third distance being less than the second distance and greater than the first distance, wherein the number of rows of temperature measuring points in the second part of temperature measuring points is greater than the number of rows of temperature measuring points in the first part of temperature measuring points; the third arrangement module is used to arrange a third part of temperature measuring points in the entire area of ​​the counter-current region, wherein the first part of temperature measuring points, the second part of temperature measuring points, and the third part of temperature measuring points all include multiple temperature measuring points.

[0009] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0010] This application divides the co-current and counter-current finned tubes within the co-current and counter-current fan units of an air-cooled condenser into three regions: a first co-current region, a second co-current region, and a counter-current region. The first co-current region includes multiple first-type co-current finned tubes, the second co-current region includes multiple second-type co-current finned tubes, and the counter-current region includes the aforementioned multiple counter-current finned tubes. Within the first co-current region, a first portion of the temperature-controlled section is arranged at a position having a first distance from the condensate header and a second distance from the steam distribution pipe. The temperature measuring points are arranged in a second part, where the first distance is less than the second distance, and the second part of the temperature measuring points is located in the second co-current region at a distance from the condensate header and a third distance from the steam distribution pipe. The third distance is less than the second distance but greater than the first distance, and the number of rows of temperature measuring points in the second part of the temperature measuring points is greater than the number of rows of temperature measuring points in the first part of the temperature measuring points. A third part of the temperature measuring points is also arranged throughout the entire counter-current region. Each of the first, second, and third parts of the temperature measuring points includes multiple temperature measuring points. This application divides the co-current and counter-current finned tubes in the steam condenser into multiple regions, and rationally arranges different numbers and locations of temperature measuring points in different regions to improve the accuracy of finned tube temperature detection. This avoids the risk of finned tube freezing and damage in cold winters by accurately knowing the temperature of finned tubes in each region. Attached Figure Description

[0011] Figure 1 A schematic diagram of the method for arranging temperature measuring points in the finned tube area of ​​a counter-flow fan unit in an air-cooled condenser, provided in this application;

[0012] Figure 2 This is a schematic diagram of the air-cooled condenser structure after the area division in this application;

[0013] Figure 3 This is one of the schematic diagrams of the air condenser structure after the temperature measuring points are arranged in this application;

[0014] Figure 4 This is the second schematic diagram of the air condenser structure after the temperature measuring points are arranged in this application;

[0015] Figure 5 This application provides a schematic diagram of the temperature measurement point arrangement system in the finned tube area of ​​an air-cooled condenser counter-flow fan unit.

[0016] Explanation of reference numerals in the attached diagram: 1. Steam distribution pipe; 2. First co-current zone; 3. Second co-current zone; 4. Counter-current zone; 5. Extraction pipe; 6. Condensate header; 7. First temperature measuring point; 8. Second temperature measuring point; 9. Third temperature measuring point; 11. Zone division module; 12. First arrangement module; 13. Second arrangement module; 14. Third arrangement module. Detailed Implementation

[0017] This application provides a method for arranging temperature measuring points in the finned tube area of ​​an air-cooled condenser counter-flow fan unit, which addresses the technical problem in the prior art where the arrangement of temperature measuring points on the finned tubes of an air-cooled condenser is incomplete and cannot accurately monitor the temperature in each area.

[0018] Example 1

[0019] like Figure 1 As shown, this application provides a method for arranging temperature measuring points in the finned tube area of ​​a counter-current fan unit in an air-cooled condenser. The method is applied to an air-cooled condenser, which includes multiple co-current fan units and counter-current fan units. The co-current fan unit includes multiple first-type co-current zone finned tubes, and the counter-current fan unit includes multiple second-type co-current zone finned tubes and multiple counter-current zone finned tubes. The inlets of the first-type co-current zone finned tubes and the second-type co-current zone finned tubes are connected to the steam distribution pipe 1, and the outlets are connected to the condensate header 6. The inlet of the counter-current zone finned tube is connected to the condensate header 6, and the outlet is connected to the exhaust pipe 5.

[0020] The method for arranging temperature measuring points in the finned tube area of ​​a counter-current fan unit in an air-cooled condenser includes:

[0021] S100: Divide the air-cooled condenser into regions to obtain a first co-current region 2, a second co-current region 3, and a counter-current region 4, wherein the first co-current region 2 includes a plurality of first-type co-current finned tubes, the second co-current region 3 includes a plurality of second-type co-current finned tubes, and the counter-current region 4 includes a plurality of counter-current finned tubes.

[0022] Air-cooled condensers are commonly used steam condensing devices in thermal power generating units in arid and water-scarce regions. They are generally composed of several rows of A-type towers. Each row of A-type towers is generally equipped with several co-current fan units and counter-current fan units, with more co-current fan units than counter-current fan units, and the counter-current fan units are located between the co-current fan units.

[0023] The co-current fan unit includes a first type of co-current zone finned tube. The inlet of the first type of co-current zone finned tube is connected to the steam distribution pipe 1 at the top of the A-type tower, and the outlet is connected to the condensate header 6 at the bottom. The counter-current fan unit includes a second type of co-current zone finned tube and a counter-current zone finned tube. The inlet of the second type of co-current zone finned tube is connected to the steam distribution pipe 1 at the top of the A-type tower, and the outlet is connected to the condensate header 6 at the bottom. The inlet of the counter-current zone finned tube is connected to the condensate header 6 at the bottom of the A-type tower, and the outlet is connected to the exhaust pipe 5.

[0024] like Figure 2 As shown, solid arrows indicate the steam flow direction, and dashed arrows indicate the condensate flow direction. In the co-current fan unit, steam enters from the inlet of the first type of co-current zone finned tube, is cooled by the air outside the finned tube, and gradually condenses into condensate. Under gravity, the condensate flows along the finned tube into the condensate header 6 at the bottom. In the counter-current fan unit, steam enters from the inlet of the second type of co-current zone finned tube. Some of the steam is cooled by the air outside the finned tube and gradually condenses into condensate. Under gravity, the condensate flows along the finned tube into the condensate header 6 at the bottom. The uncondensed steam in the second type of co-current zone finned tube enters the counter-current zone finned tube through the condensate header 6 and then flows upward. During the flow, it is cooled by the air outside the tube and condenses into condensate, which then flows into the condensate header 6 under gravity. Therefore, because the steam and condensate flow in opposite directions in the counter-current zone finned tube, it is called a counter-current zone finned tube.

[0025] Figure 2 The dashed line in the diagram indicates the location of the temperature transition interface. For finned tubes in the co-current flow zone, when the ambient temperature is low in winter, the steam inside the finned tube may condense completely a considerable distance from the outlet. This is where the temperature transition interface occurs; upstream of this interface, the temperature is close to the steam temperature, while downstream, the temperature rapidly drops to around the ambient temperature. Downstream of this interface, the condensate formed by the steam condensation inside the finned tube continues to flow downwards. During this flow, it is cooled by the outside air and is very likely to freeze, threatening the safety of the finned tube. However, for finned tubes in the counter-current flow zone, because steam flows upwards from the bottom and condensate flows downwards, the condensate is constantly heated by the steam. Therefore, even if a temperature transition interface occurs, the condensate continues to flow downwards in the counter-current flow of steam, making freezing unlikely. Thus, for winter freeze protection, controlling the cooling rate of the tube bundle in the co-current flow zone is more crucial.

[0026] In actual operation, adjusting the air-cooled fan speed changes the flow rate and velocity of the cold air outside the finned tubes, affecting the heat exchange process and thus altering the position of the temperature transition interface. Typically, the temperature transition interface of the first type of co-current finned tubes appears near the outlet, close to the condensate header 6, or there may be no temperature transition interface in the co-current zone. In the counter-current zone, the temperature transition interface gradually moves closer to the inlet end (i.e., the location of the condensate tank) as the counter-current fan speed increases. Meanwhile, the temperature transition interface of the second type of co-current finned tubes moves upwards (i.e., to one end of the steam distribution pipe 1). This increases the distance between the condensate inside and the condensate tank, leading to continuous cooling by the low-temperature (below zero degrees Celsius in winter) air, significantly increasing the risk and likelihood of freezing in winter. Therefore, it is crucial to monitor the temperature of both the second type of co-current and counter-current finned tubes to prevent freezing. Currently, the temperature measurement points for both the first and second type of co-current finned tubes are arranged identically, making it impossible to accurately detect the temperature in each area, further increasing the possibility of freezing.

[0027] like Figure 2 As shown in the embodiment of this application, the multiple finned tubes within the air-cooled condenser are divided into regions. The first type of co-current flow finned tubes in the co-current fan unit are all divided into the first co-current flow region 2; the second type of co-current flow finned tubes in the counter-current fan unit are all divided into the second co-current flow region 3; and the counter-current flow finned tubes in the counter-current fan unit are all divided into the counter-current flow region 4. Thus, the first co-current flow region 2, the second co-current flow region 3, and the counter-current flow region 4 are obtained.

[0028] S200: Within the first co-current region 2, at a position having a first distance from the condensate header 6 and a second distance from the steam distribution pipe 1, a first set of temperature measuring points 7 are arranged, wherein the first distance is less than the second distance;

[0029] like Figure 3 As shown, specifically, within the first co-current region 2, a first set of temperature measuring points 7 are arranged at positions having a first distance from the condensate header 6 and a second distance from the steam distribution pipe 1. These points are used to detect the temperature of the finned tubes in the first co-current region 2. The first set of temperature measuring points 7 includes multiple temperature measuring points and temperature measuring cables connecting each point, and is capable of detecting the temperature of all finned tubes within the first co-current region 2 at positions having the first distance from the condensate header 6 and the second distance from the steam distribution pipe 1.

[0030] Since the temperature transition interface of the first type of co-current zone finned tube is generally at the end near the condensate header 6, the first distance between the first part of the temperature measuring points 7 is smaller than the second distance, so as to detect the temperature of the first type of co-current zone finned tube near the condensate header 6 in the first co-current zone 2 and avoid freezing.

[0031] Preferably, the first distance is 0.25-3.00m, that is, the distance between the first part of the temperature measuring point 7 and the condensate manifold 6 is preferably 0.25-3.00m. The second distance is set according to the first distance and the length of the finned tube, and is greater than the first distance.

[0032] S300: Within the second co-current region 3, at a position having the first distance from the condensate manifold 6 and a third distance from the steam distribution pipe 1, a second set of temperature measuring points 8 is arranged, wherein the third distance is less than the second distance and greater than the first distance, and the number of rows of temperature measuring points in the second set of temperature measuring points 8 is greater than the number of rows of temperature measuring points in the first set of temperature measuring points 7.

[0033] Specifically, within the second co-current region 3, a second set of temperature measuring points 8 are arranged at a position having a first distance from the condensate header 6 and a third distance from the steam distribution pipe 1. The third distance is less than the second distance but greater than the first distance. That is, the second set of temperature measuring points 8 and the first set of temperature measuring points 7 are at the same distance from the condensate header 6, but less than the distance between the second set of temperature measuring points 7 and the steam distribution pipe 1. This is to detect the temperature of the finned tube in the second co-current region 3 near the condensate header 6, thus preventing freezing.

[0034] Furthermore, because the temperature in the second co-current region 3 is affected by the temperature in the counter-current region 4, the temperature transition interface in the second co-current region 3 will partially move closer to the inlet (i.e., one end of the steam distribution pipe 1). Therefore, it is necessary to increase the number of temperature measuring points near the inlet in the second part of the temperature measuring points 8. Hence, the distance between the second part of the temperature measuring points 8 and the steam distribution pipe 1 is less than the distance between the first part of the temperature measuring points 7 and the steam distribution pipe 1.

[0035] Specifically, the number of rows of temperature measuring points in the second part, temperature measuring point 8, is greater than the number of rows of temperature measuring points in the first part, temperature measuring point 7.

[0036] Preferably, the number of rows of temperature measuring points in the second part of temperature measuring points 8 is one more than the number of rows of temperature measuring points in the first part of temperature measuring points 7, and the extra row of temperature measuring points is located in the part of the second part of temperature measuring points 8 that is far away from the condensate header 6, that is, the part that is close to the steam distribution pipe 1.

[0037] It is understandable that the row of temperature measuring points near the condensate header 6 in the first part of temperature measuring point 7 and the second part of temperature measuring point 8 are set at the same horizontal line, while the additional row of temperature measuring points in the second part of temperature measuring point 8 is at a higher horizontal level than the row of temperature measuring points near the steam distribution pipe 1 in the first part of temperature measuring point 7.

[0038] Preferably, such as Figure 3As shown, the second part of temperature measuring points 8 includes three rows of temperature measuring points, while the first part of temperature measuring points 7 includes two rows of temperature measuring points.

[0039] Optionally, in another possible embodiment of this application, such as Figure 4 As shown, the second part of temperature measuring points 8 includes two rows of temperature measuring points, while the first part of temperature measuring points 7 includes one row of temperature measuring points.

[0040] Among them, at least two rows of temperature measuring points are arranged in the second part of temperature measuring points 8, and at least one row of temperature measuring points is arranged in the first part of temperature measuring points 7.

[0041] Optional, such as Figure 3 As shown, the temperature measuring points within the second part, temperature measuring point 8, cover all the multiple second-type co-current zone finned tubes within the second co-current zone 3. For example... Figure 4 As shown, the temperature measuring points in the second part 8 can also cover multiple second-type co-current zone finned tubes in the second co-current zone 3.

[0042] S400: A third part of temperature measuring points 9 are arranged in the entire area within the countercurrent region 4. The first part of temperature measuring points 7, the second part of temperature measuring points 8 and the third part of temperature measuring points 9 each include multiple temperature measuring points.

[0043] Specifically, the third set of temperature measuring points 9 is arranged throughout the entire area of ​​the countercurrent zone 4 to detect the temperature at all locations of the finned tubes in the entire countercurrent zone 4, thus preventing freezing. The first set of temperature measuring points 7, the second set of temperature measuring points 8, and the third set of temperature measuring points 9 each include multiple temperature measuring points and temperature measuring cables connecting each temperature measuring point.

[0044] In summary, the embodiments of this application have at least the following technical effects:

[0045] This application divides the co-current and counter-current finned tubes in the steam condenser into multiple regions, and rationally arranges temperature measuring points of different numbers and locations in different regions. Specifically, at least two rows of temperature measuring points are arranged at the outlet end of the second co-current region 3 in the counter-current fan unit, and multiple rows of temperature measuring points are arranged in all areas of the counter-current region 4. The temperature field of the tube bundle regions with different properties corresponding to the same fan unit is monitored separately. The difference in the temperature transition interface position of the finned tubes in the second co-current region 3 and the counter-current region 4 in the counter-current fan unit is taken into account. This overcomes the defect that the corresponding low temperature zone of the co-current finned tube bundle is too large to be detected when the frequency of the counter-current fan is high during the cold season. This improves the anti-freezing safety of the air-cooled island in winter, enhances the accuracy of finned tube temperature detection, avoids the need to accurately know the temperature of the finned tubes in each region in the cold winter, and reduces the risk of finned tube freezing and damage.

[0046] Example 2

[0047] Based on the same inventive concept as the method for arranging temperature measuring points in the finned tube area of ​​a counter-flow fan unit in an air-cooled condenser as described in the foregoing embodiments, such as... Figures 3-4 As shown, this application provides an air-cooled condenser, comprising:

[0048] Multiple co-current fan units, each of which includes multiple first-type co-current zone finned tubes;

[0049] Multiple counter-current fan units, each of which includes multiple second-type co-current zone finned tubes and multiple counter-current zone finned tubes. The inlets of the first-type co-current zone finned tubes and the second-type co-current zone finned tubes are connected to the steam distribution pipe 1 and the outlets are connected to the condensate header 6. The inlet of the counter-current zone finned tubes is connected to the condensate header 6 and the outlet is connected to the exhaust pipe 5. The multiple first-type co-current zone finned tubes form a first co-current region 2, the multiple second-type co-current zone finned tubes form a second co-current region 3, and the multiple counter-current zone finned tubes form a counter-current region 4.

[0050] The first part of the temperature measuring point 7 is set in the first downstream area 2 and has a first distance from the condensate manifold 6 and a second distance from the steam distribution pipe 1. The first distance is less than the second distance.

[0051] The second part of temperature measuring points 8 is set in the second downstream region 3 and has the first distance from the condensate manifold 6 and the third distance from the steam distribution pipe 1. The third distance is less than the second distance and greater than the first distance. The number of rows of temperature measuring points in the second part of temperature measuring points 8 is greater than the number of rows of temperature measuring points in the first part of temperature measuring points 7.

[0052] The third part of the temperature measuring point 9 is set in the entire area of ​​the countercurrent region 4. The first part of the temperature measuring point 7, the second part of the temperature measuring point 8 and the third part of the temperature measuring point 9 each include multiple temperature measuring points.

[0053] The first distance is 0.25-3.00m.

[0054] In this section, the number of rows of temperature measuring points in the second part of temperature measuring points 8 is one more than the number of rows of temperature measuring points in the first part of temperature measuring points 7, and the extra row of temperature measuring points is located in the part of the second part of temperature measuring points 8 that is far away from the condensate manifold 6.

[0055] The second part of temperature measuring points 8 includes three rows of temperature measuring points, and the first part of temperature measuring points 7 includes two rows of temperature measuring points.

[0056] The second part of temperature measuring points 8 includes two rows of temperature measuring points, and the first part of temperature measuring points 7 includes one row of temperature measuring points.

[0057] Among them, the second part of the temperature measuring point 8 covers the plurality of second type of finned tubes in the second downstream region 3.

[0058] Example 3

[0059] Based on the same inventive concept as the method for arranging temperature measuring points in the finned tube area of ​​a counter-flow fan unit in an air-cooled condenser as described in the foregoing embodiments, such as... Figure 5 As shown, this application provides a temperature measurement point arrangement system for the finned tube area of ​​an air-cooled condenser counter-flow fan unit, wherein the system includes:

[0060] The region division module 11 is used to divide the air-cooled condenser into regions to obtain a first co-current region, a second co-current region, and a counter-current region. The first co-current region includes multiple first-type co-current finned tubes, the second co-current region includes multiple second-type co-current finned tubes, and the counter-current region includes multiple counter-current finned tubes.

[0061] The first arrangement module 12 is used to arrange a first part of temperature measuring points at a position in the first co-current region that is at a first distance from the condensate header and at a second distance from the steam distribution pipe, wherein the first distance is less than the second distance;

[0062] The second arrangement module 13 is used to arrange a second part of temperature measuring points in the second co-current region at a position that has the first distance from the condensate header and a third distance from the steam distribution pipe, wherein the third distance is less than the second distance and greater than the first distance. The number of rows of temperature measuring points in the second part of temperature measuring points is greater than the number of rows of temperature measuring points in the first part of temperature measuring points.

[0063] The third arrangement module 14 is used to arrange the third part of temperature measuring points in all areas of the countercurrent area. The first part of temperature measuring points, the second part of temperature measuring points, and the third part of temperature measuring points all include multiple temperature measuring points.

[0064] Furthermore, the first distance is 0.25-3.00m.

[0065] Furthermore, the number of rows of temperature measuring points in the second part of the temperature measuring points is one more than the number of rows of temperature measuring points in the first part of the temperature measuring points, and the extra row of temperature measuring points is located in the part of the second part of the temperature measuring points that is far away from the condensate manifold.

[0066] Furthermore, the second part of the temperature measuring points includes three rows of temperature measuring points, while the first part of the temperature measuring points includes two rows of temperature measuring points.

[0067] Furthermore, the second part of the temperature measuring points includes two rows of temperature measuring points, while the first part of the temperature measuring points includes one row of temperature measuring points.

[0068] Furthermore, the second part of the temperature measuring points covers a portion of the plurality of second-type downstream finned tubes within the second downstream region.

[0069] This specification and accompanying drawings are merely illustrative examples of this application and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Therefore, if such modifications and modifications fall within the scope of this application and its equivalents, this application intends to include such modifications and modifications.

Claims

1. A method for arranging temperature measuring points in the finned tube area of ​​a counter-current fan unit in an air-cooled condenser, characterized in that, The method is applied to an air-cooled condenser, which includes multiple co-current fan units and counter-current fan units. The co-current fan unit includes multiple first-type co-current zone finned tubes, and the counter-current fan unit includes multiple second-type co-current zone finned tubes and multiple counter-current zone finned tubes. The inlets of the first-type co-current zone finned tubes and the second-type co-current zone finned tubes are connected to the steam distribution pipe, and the outlets are connected to the condensate header. The inlet of the counter-current zone finned tube is connected to the condensate header, and the outlet is connected to the exhaust pipe. The method includes: The air-cooled condenser is divided into regions to obtain a first co-current region, a second co-current region, and a counter-current region. The first co-current region includes a plurality of first-type co-current finned tubes, the second co-current region includes a plurality of second-type co-current finned tubes, and the counter-current region includes a plurality of counter-current finned tubes. A first set of temperature measuring points are arranged at a position within the first downstream region that is at a first distance from the condensate header and a second distance from the steam distribution pipe, wherein the first distance is less than the second distance; In the second downstream region, at a position having the first distance from the condensate header and a third distance from the steam distribution pipe, a second set of temperature measuring points is arranged, wherein the third distance is less than the second distance and greater than the first distance, the number of rows of temperature measuring points in the second set of temperature measuring points is greater than the number of rows of temperature measuring points in the first set of temperature measuring points, the number of rows of temperature measuring points in the second set of temperature measuring points is one more row than the number of rows of temperature measuring points in the first set of temperature measuring points, and the extra row of temperature measuring points is located in the part of the second set of temperature measuring points away from the condensate header, and the first set of temperature measuring points and the row of temperature measuring points on the side of the second set of temperature measuring points closer to the condensate header are set on the same horizontal line; A third set of temperature measuring points is arranged in the entire area of ​​the countercurrent region. The first set of temperature measuring points, the second set of temperature measuring points, and the third set of temperature measuring points all include multiple temperature measuring points.

2. The method according to claim 1, characterized in that, The first distance is 0.25-3.00m.

3. The method according to claim 1, characterized in that, The second part of the temperature measuring points includes three rows of temperature measuring points, while the first part of the temperature measuring points includes two rows of temperature measuring points.

4. The method according to claim 1, characterized in that, The second part of the temperature measuring points includes two rows of temperature measuring points, while the first part of the temperature measuring points includes one row of temperature measuring points.

5. The method according to claim 1, characterized in that, The second part of the temperature measuring points covers a portion of the plurality of second-type downstream finned tubes within the second downstream region.

6. An air-cooled condenser, characterized in that, include: Multiple co-current fan units, each of which includes multiple first-type co-current zone finned tubes; Multiple counter-current fan units, each of which includes multiple second-type co-current zone finned tubes and multiple counter-current zone finned tubes. The inlets of the first-type co-current zone finned tubes and the second-type co-current zone finned tubes are connected to the steam distribution pipe, and the outlets are connected to the condensate header. The inlet of the counter-current zone finned tubes is connected to the condensate header, and the outlet is connected to the exhaust pipe. The multiple first-type co-current zone finned tubes form a first co-current region, the multiple second-type co-current zone finned tubes form a second co-current region, and the multiple counter-current zone finned tubes form a counter-current region. The first part of the temperature measuring points is set in the first co-current area and has a first distance from the condensate header and a second distance from the steam distribution pipe, wherein the first distance is less than the second distance; The second part of the temperature measuring points is located within the second co-current area and has the first distance from the condensate header and the third distance from the steam distribution pipe. The third distance is less than the second distance and greater than the first distance. The number of rows of temperature measuring points in the second part of the temperature measuring points is greater than the number of rows of temperature measuring points in the first part of the temperature measuring points. The number of rows of temperature measuring points in the second part of the temperature measuring points is one more than the number of rows of temperature measuring points in the first part of the temperature measuring points. The extra row of temperature measuring points is located in the part of the second part of the temperature measuring points that is far away from the condensate header. The first part of the temperature measuring points and the row of temperature measuring points on the side of the second part of the temperature measuring points that is close to the condensate header are set on the same horizontal line. The third part of the temperature measuring points is set in the entire area of ​​the countercurrent region. The first part of the temperature measuring points, the second part of the temperature measuring points, and the third part of the temperature measuring points all include multiple temperature measuring points.

7. A system for arranging temperature measuring points in the finned tube area of ​​a counter-current fan unit in an air-cooled condenser, characterized in that, The system includes: The region division module is used to divide the air-cooled condenser into regions to obtain a first co-current region, a second co-current region, and a counter-current region. The first co-current region includes multiple first-type co-current finned tubes, the second co-current region includes multiple second-type co-current finned tubes, and the counter-current region includes multiple counter-current finned tubes. The first arrangement module is used to arrange a first part of temperature measuring points at a position in the first co-current region that is at a first distance from the condensate header and a second distance from the steam distribution pipe, wherein the first distance is less than the second distance; The second arrangement module is used to arrange a second set of temperature measuring points at a position in the second co-current region that is at the first distance from the condensate header and at the third distance from the steam distribution pipe. The third distance is less than the second distance and greater than the first distance. The number of rows of temperature measuring points in the second set of temperature measuring points is greater than the number of rows of temperature measuring points in the first set of temperature measuring points. The number of rows of temperature measuring points in the second set of temperature measuring points is one more row than the number of rows of temperature measuring points in the first set of temperature measuring points. The extra row of temperature measuring points is located in the part of the second set of temperature measuring points that is far away from the condensate header. The first set of temperature measuring points and the row of temperature measuring points in the second set of temperature measuring points that are close to the condensate header are set on the same horizontal line. The third arrangement module is used to arrange the third part of temperature measuring points in all areas of the countercurrent region. The first part of temperature measuring points, the second part of temperature measuring points, and the third part of temperature measuring points all include multiple temperature measuring points.

Images