Condenser, steam turbine and control method of steam turbine

Abstract

The invention provides a condenser, a steam turbine and a control method of the steam turbine. The first end of the connecting shell is connected with a steam inlet of the condenser body, the second end of the connecting shell is connected with an external steam exhaust structure, and an overflowing space is formed in the connecting shell; the adjusting structure comprises a driving part and an adjusting part in driving fit with the driving part, the adjusting part is rotatably arranged in the overflowing space, and the rotating axis of the adjusting part extends in the first transverse direction; wherein the condenser has an adjusting mode, and when the condenser is in the adjusting mode, the driving piece drives the adjusting part to rotate so as to adjust the flow direction of steam. According to the technical scheme, the problem that in the prior art, steam is possibly not evenly distributed in the condenser body is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of steam turbines, and in particular to a condenser, a steam turbine, and a control method for the steam turbine. Background Art

[0002] At present, during the deep peak load regulation process, the operating status and parameters of the steam turbine will undergo significant changes. In the condenser, the fullness of the steam turbine exhaust steam in the condenser is a key parameter. The fullness of the steam turbine exhaust steam in the condenser directly affects the operating efficiency and stability of the steam turbine unit under deep peak load regulation. The fullness of the steam turbine exhaust steam in the condenser refers to the uniformity of the distribution of the steam in the condenser body.

[0003] The fullness of exhaust steam in the condenser directly affects the exhaust efficiency of the steam turbine. When the exhaust steam in the condenser is insufficient, it will lead to poor exhaust and some steam cannot be discharged smoothly, which in turn affects the overall efficiency and performance of the steam turbine. This effect is particularly obvious during deep peak regulation, because the steam turbine needs to cope with greater load changes, and the smoothness of the exhaust system is directly related to whether it can operate stably.

[0004] The fullness of exhaust steam in the condenser is also closely related to the thermal efficiency and safety of the steam turbine. When the exhaust steam is insufficiently full, the thermal efficiency of the steam turbine will decrease, and it may also cause safety problems such as overheating and vibration. During the deep peak load regulation process, these safety problems may be magnified, posing a threat to the stable operation of the steam turbine.

[0005] In the prior art, after the exhaust steam of the steam turbine enters the condenser body, it flows forward in the condenser body. After the flow direction is changed through the throat, the exhaust steam is unevenly distributed in the condenser body due to flow inertia. Summary of the invention

[0006] The main purpose of the present invention is to provide a condenser, a steam turbine, and a control method for the steam turbine to solve the problem in the related art that the steam may be unevenly distributed in the condenser body.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a condenser is provided, comprising: a condenser body; a connecting shell, wherein the first end of the connecting shell is connected to the steam inlet of the condenser body, the second end of the connecting shell is connected to the external exhaust structure, and a flow space is arranged inside the connecting shell; an adjusting structure, the adjusting structure comprises a driving member and an adjusting part drivingly cooperated with the driving member, the adjusting part is rotatably arranged in the flow space, and the rotation axis of the adjusting part extends along a first lateral direction; wherein the condenser has an adjusting mode, and when the condenser is in the adjusting mode, the driving member drives the adjusting part to rotate to adjust the flow direction of the steam.

[0008] Furthermore, the adjusting portion comprises a plurality of adjusting blades arranged at intervals, the driving member is drivingly matched with the plurality of adjusting blades, and each adjusting blade is hingedly connected to the connecting shell.

[0009] Furthermore, the adjustment structure also includes a first transmission rod drivingly matched with the driving member, the first transmission rod is movably arranged along a second transverse direction, the second transverse direction is perpendicular to the first transverse direction, and the plurality of adjustment blades are hingedly connected to the first transmission rod.

[0010] Furthermore, the adjustment structure also includes a second transmission rod, a first end of the second transmission rod is connected to the output shaft of the driving member, and a second end of the second transmission rod is hingedly connected to the first transmission rod.

[0011] Furthermore, the condenser also includes a controller and a first temperature measuring component and a second temperature measuring component spaced apart on the connecting shell. The controller is connected to the driving component, the first temperature measuring component and the second temperature measuring component signals. The controller controls the working state of the driving component according to the measurement signals of the first temperature measuring component and the second temperature measuring component.

[0012] According to a second aspect of the present invention, a steam turbine is provided, comprising a condenser and an external exhaust structure, wherein a connecting shell of the condenser is connected to an exhaust port of the external exhaust structure, and the condenser is the above-mentioned condenser.

[0013] According to a third aspect of the present invention, a control method for a steam turbine is provided for adjusting the uniformity of steam in a condenser. The steam turbine is the steam turbine described above. The control method comprises:

[0014] When the condenser of the steam turbine is adjusted for the first time, when the main steam flow of the steam turbine meets the first preset condition, the condenser is placed in the adjustment mode;

[0015] After the first adjustment of the condenser, when the absolute value of the difference between the first temperature value and the second temperature value at different positions in the steam turbine meets the second preset condition, the condenser is placed in the adjustment mode.

[0016] Further, the steps of adjusting the mode include:

[0017] When the absolute value of the difference between the first temperature value and the second temperature value is greater than or equal to the first preset value, the driving member drives the adjusting part of the condenser to move.

[0018] Further, the step of driving the regulating part of the condenser to move includes:

[0019] When the difference between the first temperature value and the second temperature value is less than the second preset value, the driving member drives the adjusting portion to rotate clockwise;

[0020] When the difference between the first temperature value and the second temperature value is greater than or equal to the second preset value, the driving member drives the adjusting portion to rotate counterclockwise.

[0021] Further, after the condenser is adjusted for the first time, when the absolute value of the difference between the first temperature value and the second temperature value is greater than or equal to a second preset value, the condenser is placed in the adjustment mode;

[0022] The steps to adjust the mode include:

[0023] After a preset time period, the driving member drives the adjusting portion to rotate.

[0024] Furthermore, the second preset value V th Obtained by the following formula: h θ (x) = θ 0 +θ 1 ×x; where k is the warning value coefficient; h is the minimum average similarity value of the difference between the maximum temperature and the minimum temperature during normal operation of the condenser; θ (x) is the angle of rotation of the adjusting part; θ 1 is the slope; θ 0 is the intercept; x is the absolute value of the difference between the first temperature value and the second temperature value.

[0025] According to the technical solution of the present invention, the condenser includes a condenser body, a connecting shell and an adjusting structure. The first end of the connecting shell is connected to the steam inlet of the condenser body, the second end of the connecting shell is connected to the external exhaust structure, and a flow space is arranged inside the connecting shell. The adjusting structure includes a driving member and an adjusting part, the driving member and the adjusting part drive and cooperate, the adjusting part is arranged in the flow space, the adjusting part is rotatably arranged, and the rotation axis of the adjusting part extends along the first transverse direction. The condenser has an adjustment mode, when the condenser is in the adjustment mode, the driving member drives the adjusting part to rotate to adjust the flow direction of the steam. Through the above arrangement, the steam discharged from the external exhaust structure can enter the flow space through the second end of the connecting shell, and then can enter the condenser body through the flow space. When the condenser is in the adjustment mode, the driving member can drive the adjusting part to rotate around the first transverse direction, after the adjusting part rotates, it can guide the flow of a part of the steam, so that the flow direction of this part of the steam changes, so that the flow direction of the steam is more dispersed, and the uniformity of the distribution of the steam in the condenser body is improved. Therefore, the technical solution of the present application effectively solves the problem in the related art that the steam may be unevenly distributed in the condenser body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 A schematic front view of an embodiment of a condenser according to the present invention is shown;

[0028] Figure 2 A schematic flow chart showing an embodiment of a method for controlling a steam turbine according to the present invention is shown;

[0029] Figure 3 Shows Figure 2 Step S11 of the control method for a steam turbine is as follows: when the absolute value of the difference between the first temperature value and the second temperature value is greater than or equal to the first preset value, the driving member 31 drives the regulating part 32 of the condenser to move.

[0030] The above drawings include the following reference numerals:

[0031] 10. Condenser body; 20. Connecting shell; 21. Flow space; 30. Adjustment structure; 31. Driving member; 32. Adjustment part; 321. Adjustment blade; 33. First transmission rod; 34. Second transmission rod; 40. First temperature measuring member; 50. Second temperature measuring member. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0035] The condenser of this embodiment can change the steam turbine exhaust fullness (specifically, the uniformity of the steam turbine exhaust in the condenser body) during deep peak regulation. Consider the exhaust flow rate of the steam turbine at the maximum load (TMCR) condition and deep peak load regulation, and combine the exhaust temperature and exhaust pressure, and combine the comprehensive design with big data calculation. Specifically, measure the temperature field in the condenser (i.e., the first temperature measuring component and the second temperature measuring component), collect the exhaust flow rate of the steam turbine, and cooperate with the designed adjustment structure to change the angle of the adjustment structure 30 through the big data algorithm, so as to achieve the change of the uniformity of the distribution of the steam turbine exhaust in the condenser.

[0036] The condenser of this embodiment has the following advantages:

[0037] 1. Significantly improve the operating efficiency of the steam turbine. By accurately controlling the steam exhaust fullness of the steam turbine, the steam turbine can make more full use of steam energy during deep peak regulation, reduce energy loss, and thus improve the operating efficiency of the entire system;

[0038] 2. It helps to improve the stability of the steam turbine. During the deep peak load regulation process, the steam turbine may face various complex operating conditions. Optimizing the steam turbine exhaust fullness can help the steam turbine better adapt to these changes and reduce the unstable operation caused by operating condition fluctuations;

[0039] 3. It is intelligent and automated. By introducing advanced control algorithms and sensor technology, it can realize real-time monitoring and automatic adjustment of exhaust steam filling degree, reduce the need for manual intervention, and improve the convenience and accuracy of operation.

[0040] 4. High flexibility and adaptability. Different steam turbines and different operating conditions may require different exhaust steam fullness settings, and this method and device can be flexibly adjusted according to actual conditions to meet different needs.

[0041] like Figure 1 As shown, the condenser of this embodiment includes: a condenser body 10, a connecting shell 20 and an adjusting structure 30. The first end of the connecting shell 20 is connected to the steam inlet of the condenser body 10, the second end of the connecting shell 20 is connected to the external exhaust structure, and a flow space 21 is provided inside the connecting shell 20. The adjusting structure 30 includes a driving member 31 and an adjusting portion 32 driven by the driving member 31. The adjusting portion 32 is rotatably arranged in the flow space 21, and the rotation axis of the adjusting portion 32 extends along the first transverse direction. The condenser has an adjusting mode. When the condenser is in the adjusting mode, the driving member 31 drives the adjusting portion 32 to rotate to adjust the flow direction of the steam.

[0042] Applying the technical solution of the present invention, the condenser includes a condenser body 10, a connecting shell 20 and an adjusting structure 30. The first end of the connecting shell 20 is connected to the steam inlet of the condenser body 10, the second end of the connecting shell 20 is connected to the external exhaust structure, and a flow space 21 is arranged inside the connecting shell 20. The adjusting structure 30 includes a driving member 31 and an adjusting part 32, the driving member 31 and the adjusting part 32 are drivingly matched, the adjusting part 32 is arranged in the flow space 21, the adjusting part 32 is rotatably arranged, and the rotation axis of the adjusting part 32 extends along the first transverse direction. The condenser has an adjustment mode, when the condenser is in the adjustment mode, the driving member 31 drives the adjusting part 32 to rotate to adjust the flow direction of the steam. Through the above arrangement, the steam discharged from the external exhaust structure can enter the flow space through the second end of the connecting shell 20, and then can enter the condenser body 10 through the flow space 21. When the condenser is in the adjustment mode, the driving member 31 can drive the adjustment part 32 to rotate around the first lateral direction. After the adjustment part 32 rotates, it can guide the flow of a part of the gas, thereby changing the flow direction of this part of the gas, so that the flow direction of the gas is more dispersed, and the uniformity of the gas distribution in the condenser body 10 is improved. Therefore, the technical solution of the present application effectively solves the problem that the gas may be unevenly distributed in the condenser body in the related art.

[0043] The external exhaust structure refers to the low pressure cylinder. The driving member 31 is a driving motor.

[0044] The first transverse direction is a horizontal direction, or has an angle with the horizontal direction that is less than or equal to 30°.

[0045] like Figure 1As shown, in this embodiment, the regulating part 32 includes a plurality of regulating blades 321 arranged at intervals, and the driving member 31 and the plurality of regulating blades 321 are driven and matched, and each regulating blade 321 is hingedly connected to the connecting shell 20. The plurality of regulating blades 321 can guide the flow of a part of the gas, thereby changing the flow direction of the part of the gas, so that the flow direction of the gas is more dispersed, and the uniformity of the gas distribution in the condenser body 10 is improved, that is, the flow field distribution of the gas is more uniform, so that when the driving member 31 drives the plurality of regulating blades 321 to rotate, the gas can change the flow direction when entering the condenser body 10, so that the gas can be distributed more evenly in the condenser body 10.

[0046] The outer shape of the regulating blade is a curved surface. In the direction from the driving member to the regulating blade, the middle part of the regulating blade away from the driving member is protruding.

[0047] like Figure 1 As shown, in this embodiment, the adjustment structure 30 further includes a first transmission rod 33 drivingly matched with the driving member 31, the first transmission rod 33 is movably arranged along the second transverse direction, the second transverse direction is perpendicular to the first transverse direction, and the plurality of adjustment blades 321 are hingedly connected to the first transmission rod 33. The driving member 31 can drive the first transmission rod 33 to move along the second transverse direction, and then the first transmission rod 33 can drive the plurality of adjustment blades 321 to rotate relative to the connecting shell 20, so that under the action of the plurality of adjustment blades 321, the steam is more evenly distributed in the condenser body 10.

[0048] like Figure 1 As shown, in this embodiment, the adjustment structure 30 further includes a second transmission rod 34, a first end of the second transmission rod 34 is connected to the output shaft of the driving member 31, and a second end of the second transmission rod 34 is hingedly connected to the first transmission rod 33. When the output shaft of the driving member 31 rotates, the second transmission rod 34 can be driven to rotate, and when the second transmission rod 34 rotates, the first transmission rod 33 can be driven to move along the second transverse direction.

[0049] It should be noted that the regulating blade 321 includes a blade body and a third transmission rod disposed on the blade body, a first end of the third transmission rod is fixedly connected to the blade body, and a second end of the third transmission rod is hingedly connected to the first transmission rod 33. The middle part of the blade body is protruding.

[0050] like Figure 1As shown, in this embodiment, the condenser further includes a controller and a first temperature measuring member 40 and a second temperature measuring member 50 arranged at intervals on the connecting shell 20. The controller is connected to the driving member 31, the first temperature measuring member 40 and the second temperature measuring member 50 by signals. The controller controls the working state of the driving member 31 according to the measurement signal of the first temperature measuring member 40 and the measurement signal of the second temperature measuring member 50. By setting the first temperature measuring member 40 and the second temperature measuring member 50, the temperature inside the connecting shell 20 can be collected, so that the controller can control the working state of the driving member according to the measurement signal of the first temperature measuring member 40 and the measurement signal of the second temperature measuring member 50, that is, the controller can control the driving member 31 to run or stop.

[0051] The condenser also includes a low-pressure heater, circulating water inlet and outlet, a hot well and a drainage expansion device arranged on the condenser body 10.

[0052] The second transverse direction is arranged parallel to the direction from the first temperature measuring element to the second temperature measuring element.

[0053] The first temperature measuring member 40 and the second temperature measuring member 50 are spaced apart from each other along the second transverse direction on the condenser body 10. In the projection of the condenser on a plane perpendicular to the first transverse direction, the adjusting portion 32 is located between the first temperature measuring member 40 and the second temperature measuring member 50 in the second transverse direction.

[0054] The first temperature measuring component 40 includes a first temperature measuring instrument, and the second temperature measuring component 50 includes a second temperature measuring instrument.

[0055] The steam turbine of this embodiment includes a condenser and an external exhaust structure, the connection shell 20 of the condenser is connected to the exhaust port of the external exhaust structure, and the condenser is the above-mentioned condenser. When the above-mentioned condenser is in use, the driving member 31 can drive the regulating part 32 to rotate. When the regulating part 32 rotates, the flow direction of the steam in the condenser body 10 can be changed, so that the steam is distributed more evenly in the condenser body 10. The steam turbine with the above-mentioned condenser also has the above-mentioned advantages.

[0056] like Figure 2 and Figure 3 As shown, the control method of the steam turbine of this embodiment is used to adjust the uniformity of the steam in the condenser, the steam turbine is the above-mentioned steam turbine, and the control method includes:

[0057] Step S10: when the condenser of the steam turbine is adjusted for the first time, when the main steam flow of the steam turbine meets the first preset condition, the condenser is placed in the adjustment mode;

[0058] Step S20: After the condenser is adjusted for the first time, when the absolute value of the difference between the first temperature value and the second temperature value at different positions in the steam turbine meets a second preset condition, the condenser is placed in an adjustment mode.

[0059] Through the above method, when the steam turbine is adjusted for the first time, the working state of the condenser can be changed according to the main steam flow of the steam turbine, that is, it is determined whether the condenser is switched to the adjustment mode. After the steam turbine is adjusted for the first time, the working state of the condenser can be changed according to the temperature values ​​at two different positions in the steam turbine, that is, it is determined whether the condenser is switched to the adjustment mode according to the difference between the first temperature value and the second temperature value.

[0060] It should be noted that the main steam flow of the steam turbine meets the first preset condition when the main steam flow of the steam turbine is less than 50% of the main steam flow in the flow heat balance diagram of the steam turbine under rated operating conditions.

[0061] The first temperature value is measured by the first temperature measuring element 40, and the second temperature value is measured by the second temperature measuring element 50. Of course, the first temperature value and the second temperature value can also be measured at other positions in the condenser body, and the temperature values ​​at the first temperature measuring element and the second temperature measuring element can be converted according to the temperature distribution law in the condenser body.

[0062] like Figure 2 and Figure 3 As shown, in this embodiment, step S10: the step of adjusting the mode includes:

[0063] Step S11: when the absolute value of the difference between the first temperature value and the second temperature value is greater than or equal to a first preset value, the driving member 31 drives the regulating part 32 of the condenser to move.

[0064] Through the above method, it is possible to determine when the driving member drives the adjusting portion 32 to move according to the difference between the first temperature value and the second temperature value.

[0065] It should be noted that the first preset value is 1°C.

[0066] Step S10: When the condenser of the steam turbine is adjusted for the first time, when the main steam flow of the steam turbine meets the first preset condition, the steps after the condenser is placed in the adjustment mode include:

[0067] Step S15: After the interval, execute step S10.

[0068] Through the above method, it is possible to determine whether the condenser is switched to the regulation mode again according to the main steam flow of the steam turbine after the interval.

[0069] It should be noted that the interval is 5 minutes.

[0070] like Figure 3 As shown, in this embodiment, step S11: the step of driving the regulating part 32 of the condenser to move includes:

[0071] Step S111: when the difference between the first temperature value and the second temperature value is less than the second preset value, the driving member 31 drives the adjusting portion 32 to rotate clockwise;

[0072] Step S112: when the difference between the first temperature value and the second temperature value is greater than or equal to the second preset value, the driving member 31 drives the adjusting portion 32 to rotate counterclockwise.

[0073] Through the above method, the driving member 31 can determine the rotation direction of the adjusting portion 32 driven by the driving member 31 according to the relationship between the difference between the first temperature value and the second temperature value and the second preset value.

[0074] It should be noted that the second preset value is -1°C. The driving member 31 drives the adjusting part 32 to rotate clockwise, which means that the driving member 31 drives the adjusting part 32 to rotate toward the first temperature measuring part. The driving member 31 drives the adjusting part 32 to rotate counterclockwise, which means that the driving member 31 drives the adjusting part 32 to rotate toward the second temperature measuring part.

[0075] like Figure 2 and Figure 3 As shown, in this embodiment, after the condenser is adjusted for the first time, when the absolute value of the difference between the first temperature value and the second temperature value is greater than or equal to the second preset value, the condenser is placed in the adjustment mode;

[0076] The steps to adjust the mode include:

[0077] Step S21: After a preset time period, the driving member 31 drives the adjusting portion 32 to rotate.

[0078] By the above method, after the condenser is adjusted for the first time, it is possible to determine whether the condenser is switched to the adjustment mode according to the relationship between the difference between the first temperature value and the second temperature value and the second preset value. When it is determined that the condenser is switched to the adjustment mode, after a preset time, the driving member 31 drives the adjustment part 32 to rotate.

[0079] It should be noted that the preset duration is 300 seconds.

[0080] Step S21: When the driving member 31 drives the adjusting portion 32 to rotate, step S11 is executed.

[0081] Through the above method, it can be achieved that after a preset time period, the driving member 31 drives the adjusting portion 32 to rotate.

[0082] Step S20: After the first adjustment of the condenser, when the absolute value of the difference between the first temperature value and the second temperature value at different positions in the turbine meets the second preset condition, the steps after the condenser is placed in the adjustment mode include:

[0083] Step S25: After the interval, execute step S20.

[0084] like Figure 2 and Figure 3 As shown, in this embodiment, the second preset value V th Obtained by the following formula:

[0085]

[0086] h θ (x) = θ 0 +θ 1 ×x;

[0087] Among them, k is the warning value coefficient;

[0088] is the minimum value of the average similarity between the first temperature value and the second temperature value when the condenser is operating normally;

[0089] h θ (x) is the rotation angle of the adjustment part 32,

[0090] θ 1 is the slope;

[0091] θ 0 is the intercept;

[0092] x is the absolute value of the difference between the first temperature value and the second temperature value.

[0093] θ 0 is the initial angle of the adjustment portion 32.

[0094] As a feasible implementation, when x is substituted into the above formula, the unit of x can be omitted and only the numerical value can be substituted.

[0095] Through the above-mentioned setting, the size of the second preset value can be determined, and then it is convenient to determine whether the condenser is switched to the adjustment mode according to the difference between the first temperature value and the second temperature value.

[0096] The initial angle of the adjustment portion 32 refers to the angle between the adjustment blade 321 and the direction connecting the shell 20 to the condenser body 10 before the condenser enters the adjustment mode.

[0097] It should be noted that V th The calculation formula is based on the data of the first adjustment of the steam turbine, using the big data algorithm to verify and learn the data, and using the regression equation for data early warning revision. The second preset value can also be called the early warning threshold, which represents the critical line between normal and abnormal equipment.

[0098] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0099] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0100] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0101] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A condenser, characterized in that: include: Condenser body (10); A connecting shell (20), wherein a first end of the connecting shell (20) is connected to a steam inlet of the condenser body (10), a second end of the connecting shell (20) is connected to an external exhaust structure, and a flow space (21) is provided inside the connecting shell (20); an adjusting structure (30), the adjusting structure (30) comprising a driving member (31) and an adjusting portion (32) drivingly matched with the driving member (31), the adjusting portion (32) being rotatably disposed in the flow space (21), and a rotation axis of the adjusting portion (32) extending along a first transverse direction; The condenser has an adjustment mode. When the condenser is in the adjustment mode, the driving member (31) drives the adjustment part (32) to rotate so as to adjust the flow direction of the steam.

2. The condenser according to claim 1, characterized in that: The adjusting portion (32) comprises a plurality of adjusting blades (321) arranged at intervals, the driving member (31) is drivingly matched with the plurality of adjusting blades (321), and each of the adjusting blades (321) is hingedly connected to the connecting shell (20).

3. The condenser according to claim 2, characterized in that: The adjustment structure (30) further comprises a first transmission rod (33) drivingly matched with the driving member (31); the first transmission rod (33) is movably arranged along a second transverse direction, the second transverse direction is perpendicular to the first transverse direction, and the plurality of adjustment blades (321) are all hingedly connected to the first transmission rod (33).

4. The condenser according to claim 3, characterized in that: The adjustment structure (30) further comprises a second transmission rod (34), a first end of the second transmission rod (34) being connected to the output shaft of the driving member (31), and a second end of the second transmission rod (34) being hingedly connected to the first transmission rod (33).

5. The condenser according to any one of claims 1 to 4, characterized in that: The condenser further comprises a controller and a first temperature measuring component (40) and a second temperature measuring component (50) which are arranged at intervals on the connecting shell (20); the controller is signal-connected to the driving component (31), the first temperature measuring component (40) and the second temperature measuring component (50); the controller controls the working state of the driving component (31) according to the measurement signal of the first temperature measuring component (40) and the measurement signal of the second temperature measuring component (50).

6. A steam turbine, comprising a condenser and an external exhaust structure, wherein a connection shell (20) of the condenser is connected to an exhaust port of the external exhaust structure, characterized in that: The condenser is the condenser according to any one of claims 1 to 5.

7. A control method for a steam turbine for adjusting the uniformity of steam in a condenser, characterized in that: The steam turbine is the steam turbine according to claim 6, and the control method comprises: When the condenser of the steam turbine is adjusted for the first time, when the main steam flow of the steam turbine meets a first preset condition, the condenser is placed in an adjustment mode; After the condenser is adjusted for the first time, when the absolute value of the difference between the first temperature value and the second temperature value at different positions in the steam turbine meets a second preset condition, the condenser is placed in the adjustment mode.

8. The method for controlling a steam turbine according to claim 7, characterized in that: The steps of the adjustment mode include: When the absolute value of the difference between the first temperature value and the second temperature value is greater than or equal to a first preset value, the driving member (31) drives the regulating part (32) of the condenser to move.

9. The method for controlling a steam turbine according to claim 8, characterized in that: The step of driving the regulating part (32) of the condenser to move comprises: When the difference between the first temperature value and the second temperature value is less than a second preset value, driving the adjustment part (32) to rotate clockwise; When the difference between the first temperature value and the second temperature value is greater than or equal to a second preset value, the driving member (31) drives the adjusting portion (32) to rotate counterclockwise.

10. The method for controlling a steam turbine according to any one of claims 7 to 9, characterized in that: After the condenser is adjusted for the first time, when the absolute value of the difference between the first temperature value and the second temperature value is greater than or equal to a second preset value, the condenser is placed in an adjustment mode; The steps of the adjustment mode include: After a preset time period, the driving member (31) drives the adjusting portion (32) to rotate.

11. The method for controlling a steam turbine according to claim 10, characterized in that: The second preset value V th Obtained by the following formula: h θ (x)=θ0+θ1×x; Among them, k is the warning value coefficient; It is the minimum average similarity value of the difference between the maximum temperature value and the minimum temperature value during normal operation of the condenser; h θ (x) is the rotation angle of the adjusting portion (32); θ1 is the slope; θ0 is the intercept; x is the absolute value of the difference between the first temperature value and the second temperature value.

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