Steam turbine leakproofness detection method and device, medium, equipment and program product

Abstract

The invention relates to a steam turbine leakproofness detection method and device, a medium, equipment and a program product, relates to the technical field of steam turbines, and can improve the reliability and accuracy of leakproofness detection results. The method comprises the steps that a first load of a steam turbine is obtained, and the steam turbine comprises a first main throttle valve and a second main throttle valve; determining first axle door opening degree information corresponding to a first main throttle valve, and converting the first axle door opening degree information into second axle door opening degree information corresponding to a second main throttle valve under the condition of keeping the flow of the steam turbine unchanged; the opening degree of an axle door connected with the first main throttle valve is controlled to be reduced at the preset speed, the opening degree of an axle door connected with the second main throttle valve is synchronously controlled to be increased at the preset speed according to the second axle door opening degree information till the axle door connected with the first main throttle valve is in a closed state, and a second load of the steam turbine is obtained; and according to the first load and the second load, leakproofness detection is conducted on the first main throttle valve, and a leakproofness detection result is obtained.

Description

Technical Field

[0001] The present disclosure relates to the technical field of steam turbines, and in particular to a method, device, medium, equipment and program product for detecting tightness of a steam turbine. Background Art

[0002] When the steam turbine is abnormal, it is necessary to control the turbine to shut down, and the main steam valve needs to be changed from the fully open position to the fully closed position. Therefore, the steam turbine tightness test is to verify whether the main steam valve is in the fully closed position when the steam turbine is in normal working conditions, so as to ensure the safe operation of the steam turbine.

[0003] At present, during the tightness test of the steam turbine, the position of the main steam valve is detected after the bridge gate connected to any main steam valve is closed, that is, the steam turbine is placed in an abnormal state by controlling the opening of the bridge gate, so as to perform the tightness test of the steam turbine. During the whole process, the air intake of the steam turbine will change with the change of the bridge gate opening, making the flow in the steam turbine unstable, resulting in unreliable results of the tightness test of the steam turbine. Summary of the invention

[0004] In order to solve the deficiencies of the prior art, the present disclosure provides a steam turbine tightness detection method, device, medium, equipment and program product.

[0005] In order to achieve the above objectives, in a first aspect, the present disclosure provides a steam turbine tightness detection method, comprising: Acquiring a first load of a steam turbine, wherein the steam turbine includes a first main steam valve and a second main steam valve; Determine the first bridge door opening information corresponding to the first main steam valve, and convert the first bridge door opening information into the second bridge door opening information corresponding to the second main steam valve while keeping the flow of the steam turbine unchanged; Controlling the opening of the bridge gate connected to the first main steam valve to decrease at a preset speed, and synchronously controlling the opening of the bridge gate connected to the second main steam valve to increase at the preset speed according to the second bridge gate opening information, until the bridge gate connected to the first main steam valve is in a closed state, and obtaining a second load of the steam turbine; According to the first load and the second load, a tightness test is performed on the first main steam valve to obtain a tightness test result.

[0006] In a second aspect, the present disclosure provides a steam turbine tightness detection device, comprising: an acquisition module configured to acquire a first load of a steam turbine, the steam turbine comprising a first main steam valve and a second main steam valve; a determination module configured to determine first bridge door opening information corresponding to the first main steam valve, and convert the first bridge door opening information into second bridge door opening information corresponding to the second main steam valve while keeping the flow of the steam turbine unchanged; a control module configured to control the opening of the bridge gate connected to the first main steam valve to decrease at a preset speed, and synchronously control the opening of the bridge gate connected to the second main steam valve to increase at the preset speed according to the second bridge gate opening information, until the bridge gate connected to the first main steam valve is in a closed state, and obtain a second load of the steam turbine; The detection module is configured to perform a tightness detection on the first main steam valve according to the first load and the second load to obtain a tightness detection result.

[0007] In a third aspect, the present disclosure provides a non-temporary computer-readable storage medium having a computer program stored thereon, which implements the method described in the first aspect when executed by a processor.

[0008] In a fourth aspect, the present disclosure provides an electronic device, including: a memory having a computer program stored thereon; A processor is used to execute the computer program in the memory to implement the method described in the first aspect.

[0009] In a fifth aspect, the present disclosure provides a computer program product, including a computer program, which implements the method described in the first aspect when executed by a processor.

[0010] Through the above technical scheme, the first bridge gate opening information corresponding to the first main steam valve is converted into the second bridge gate opening information corresponding to the second main steam valve while keeping the flow of the turbine unchanged, thereby ensuring the stability of the flow of the turbine during the tightness test; the reduction and increase of the openings of the bridge gates corresponding to the first main steam valve and the second main steam valve are synchronously controlled at a preset speed, thereby avoiding the impact and damage to the turbine caused by the sudden change of the bridge gate opening, and further improving the accuracy of the subsequent tightness test results on the basis of improving the safety of the tightness test process; the tightness test of the first main steam valve is carried out according to the first load and the second load, without the need to test the data multiple times, thereby improving the test speed, simplifying the parameters involved, shortening the data processing time, and improving the reliability and accuracy of the turbine tightness test results.

[0011] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 The flowchart of a steam turbine tightness detection method is shown according to an exemplary embodiment of the present disclosure.

[0013] Figure 2 is another flow chart of a steam turbine tightness detection method according to an exemplary embodiment of the present disclosure.

[0014] Figure 3 It is a block diagram of a steam turbine tightness detection device according to an exemplary embodiment of the present disclosure.

[0015] Figure 4 is a block diagram of an electronic device according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0016] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0017] It is worth noting that in the process of slowly closing the two bridge gates, the air intake of the turbine decreases, causing the load of the turbine to decrease. When the load of the turbine is reduced to the preset target load, the opening of the remaining two bridge gates will increase until the air intake of the turbine returns to normal. At this time, the load of the turbine increases, that is, the load of the turbine fluctuates greatly during the detection process, which increases the probability of accidents of the turbine and makes the power generation instructions generated based on the turbine unreliable.

[0018] In view of this, the present disclosure provides a steam turbine tightness detection method, device, medium, equipment and program product, which can prevent the tightness detection result from being affected by the load of the steam turbine and improve the reliability and accuracy of the tightness detection result.

[0019] Figure 1 A steam turbine tightness detection method according to an exemplary embodiment of the present disclosure is shown, and the method can be used in smart terminals such as laptops, smart phones, tablets, etc. Figure 1 As shown, the steam turbine tightness detection method may include the following steps: In step S101, a first load of a steam turbine is acquired, wherein the steam turbine includes a first main steam valve and a second main steam valve.

[0020] It is worth noting that a steam turbine generally includes two main steam valves and four bridge gates. The two main steam valves are connected in series, and the four bridge gates are divided into two groups. Each group of bridge gates is connected in parallel to a main steam valve. For example, a steam turbine includes main steam valve No. 1, main steam valve No. 2, bridge gate No. 1, bridge gate No. 2, bridge gate No. 3 and bridge gate No. 4. Main steam valve No. 1 and main steam valve No. 2 are connected in series, bridge gate No. 1 and bridge gate No. 2 are connected in parallel to main steam valve No. 1, and bridge gate No. 3 and bridge gate No. 4 are connected in parallel to main steam valve No. 2. After main steam valve No. 1 is inlet, its corresponding bridge gate No. 1 and bridge gate No. 2 adjust their openings according to the load demand or control command of the steam turbine. After main steam valve No. 2 is inlet, its corresponding bridge gate No. 3 and bridge gate No. 4 adjust their openings according to the load demand or control command of the steam turbine to control the steam flow and pressure in the steam turbine.

[0021] In step S102, first bridge door opening information corresponding to the first main steam valve is determined, and the first bridge door opening information is converted into second bridge door opening information corresponding to the second main steam valve while keeping the flow rate of the steam turbine unchanged.

[0022] In step S103, the opening of the bridge gate connected to the first main steam valve is controlled to decrease at a preset speed, and the opening of the bridge gate connected to the second main steam valve is synchronously controlled to increase at the preset speed according to the second bridge gate opening information until the bridge gate connected to the first main steam valve is in a closed state, thereby obtaining the second load of the steam turbine.

[0023] It is worth noting that the preset speed can be preset according to the strictness detection requirements, and the preset speed is used to control the bridge door opening to slowly decrease or slowly increase. This is not limited in the embodiments of the present disclosure.

[0024] In step S104, a tightness test is performed on the first main steam valve according to the first load and the second load to obtain a tightness test result.

[0025] In the disclosed embodiment, while keeping the flow rate of the steam turbine unchanged, the first bridge door opening information corresponding to the first main steam valve is converted into the second bridge door opening information corresponding to the second main steam valve, ensuring the stability of the flow rate of the steam turbine during the tightness detection process, thereby improving the accuracy of the subsequent tightness detection results; the reduction and increase of the opening of the bridge door corresponding to the first main steam valve and the second main steam valve are synchronously controlled by the preset speed, avoiding the impact and damage to the steam turbine caused by the sudden change of the bridge door opening, and further improving the accuracy of the subsequent tightness detection results on the basis of improving the safety of the tightness detection process; the tightness detection of the main steam valve is carried out according to the first load and the second load of the steam turbine, without multiple detections and the data processing time is short, thereby improving the speed of the tightness detection and reducing the detection cost. Moreover, the steam turbine tightness detection method is not only applicable to the tightness detection of the first main steam valve, but also can be used for the tightness detection of the second main steam valve or other related components in the steam turbine, with high flexibility and scalability.

[0026] In order to facilitate those skilled in the art to better understand the steam turbine tightness detection method provided by the present disclosure, the steps of the method are described below.

[0027] It is worth noting that, in the embodiment of the present disclosure, the first bridge gate opening information can be converted into the second bridge gate opening information corresponding to the second main steam valve in two ways. The first way is to determine the flow difference between the flow corresponding to the current opening of the first bridge gate and the second bridge gate and the flow corresponding to the opening when both are zero, and determine the second bridge gate opening information corresponding to the second main steam valve according to the flow difference; the second way is to control the first bridge gate and the second bridge gate to slowly decrease from the current opening to zero, determine the flow difference between the flow corresponding to the opening of the first bridge gate and the second bridge gate at the previous moment and the flow corresponding to the opening at the next moment, determine the intermediate opening of the third bridge gate and the fourth bridge gate at the current moment, and control the opening of the third bridge gate and the fourth bridge gate to increase to the intermediate opening.

[0028] For method 1, determine the flow difference between the flow corresponding to the current opening of the first bridge door and the second bridge door and the flow corresponding to zero opening, and determine the second bridge door opening information corresponding to the second main steam valve based on the flow difference.

[0029] In a feasible implementation manner, the first bridge door opening information includes a first opening of a first bridge door connected to the first main steam valve and a second opening of a second bridge door connected to the first main steam valve; In step S102, the first bridge door opening information is converted into second bridge door opening information corresponding to the second main steam valve according to the preset correspondence between the bridge door opening and the flow rate, including: According to a correspondence between a preset bridge gate opening and a flow rate, determining a first flow rate of the steam turbine when the first bridge gate is at the first opening and the second bridge gate is at the second opening, and a second flow rate of the steam turbine when the openings of the first bridge gate and the second bridge gate are both zero; Determine the flow difference between the first flow and the second flow, and determine the third opening of the third bridge gate connected to the second main steam valve in the steam turbine and the fourth opening of the fourth bridge gate connected to the second main steam valve based on the correspondence between the preset bridge gate opening and the flow and the flow difference, and obtain the second bridge gate opening information corresponding to the second main steam valve.

[0030] It is worth noting that the correspondence between the preset bridge gate opening and the flow rate can be a turbine valve flow characteristic curve, which includes the correspondence between each valve in the turbine at different openings and the flow rate. The correspondence between the preset bridge gate opening and the flow rate can also be preset according to the actual operating parameters of the turbine. The embodiments of the present disclosure are not limited to this.

[0031] It is worth noting that the first opening degree and the second opening degree are the same or different, and the third opening degree and the fourth opening degree are the same or different, and the present disclosure does not limit this.

[0032] It is worth noting that the first flow rate is greater than the second flow rate, and the flow difference between the first flow rate and the second flow rate is the amount of decrease in flow in the turbine corresponding to the first bridge gate and the second bridge gate slowly decreasing from the current opening to zero opening during the turbine tightness test; the third opening of the third bridge gate and the fourth opening of the fourth bridge gate are determined according to the correspondence between the preset bridge gate opening and the flow rate and the flow difference, that is, according to the correspondence between the preset bridge gate opening and the flow rate, the amount of decrease in flow in the turbine corresponding to the first bridge gate and the second bridge gate changing from the initial state to the closed state is converted into the third bridge gate and the fourth bridge gate slowly increasing from the current opening to the opening corresponding to the flow in the turbine being the first flow rate; so that in the subsequent turbine tightness test process, when the openings of the first bridge gate and the second bridge gate are controlled to decrease at a preset speed and the openings of the third bridge gate and the fourth regulating valve are synchronously controlled to increase at a preset speed, the flow of the turbine is in a stable state, thereby improving the reliability of the subsequent turbine tightness test results.

[0033] Accordingly, in a feasible implementation manner, in step S103, the control of the opening of the bridge door connected to the first main steam valve to decrease at a preset speed, and the control of the opening of the bridge door connected to the second main steam valve to increase at the preset speed synchronously according to the second bridge door opening information, until the bridge door connected to the first main steam valve is in a closed state, includes: The first bridge door is controlled to decrease from the first opening at a preset speed, and the second bridge door is controlled to decrease from the second opening at the preset speed, and the opening of the third bridge door is controlled to increase to the third opening at the preset speed, and the opening of the fourth bridge door is controlled to increase to the fourth opening at the preset speed, until the first bridge door and the second bridge door are both in a closed state.

[0034] For example, determine the flow difference between the flow at the current opening of bridge gate No. 1 and bridge gate No. 2 and the flow when the openings of bridge gate No. 1 and bridge gate No. 2 are both zero, and determine the target openings corresponding to bridge gate No. 3 and bridge gate No. 4 according to the turbine valve flow characteristic curve and the flow difference; control bridge gate No. 1 and bridge gate No. 2 to decrease from the current opening at a preset speed, and synchronously control bridge gate No. 3 and bridge gate No. 4 to increase from the current opening at a preset speed, until the openings of bridge gate No. 1 and bridge gate No. 2 are zero, and the openings of bridge gate No. 3 and bridge gate No. 4 are their corresponding target openings.

[0035] For method 2, in the process of controlling the first bridge gate and the second bridge gate to slowly decrease from the current opening to zero, the flow difference between the flow corresponding to the opening of the first bridge gate and the second bridge gate at the previous moment and the flow corresponding to the opening at the next moment is determined, the intermediate opening of the third bridge gate and the fourth bridge gate increased at the current moment is determined, and the opening of the third bridge gate and the fourth bridge gate is controlled to increase to the intermediate opening.

[0036] For example, bridge gate No. 1 and bridge gate No. 2 are controlled to decrease from the current opening at a preset speed. For each moment, the flow difference between the flow corresponding to the opening of bridge gate No. 1 and bridge gate No. 2 at the previous moment and the flow corresponding to the opening at the current moment is determined. According to the turbine valve flow characteristic curve and the flow difference, the intermediate openings corresponding to bridge gate No. 3 and bridge gate No. 4 at the current moment are determined, and the openings of bridge gate No. 3 and bridge gate No. 4 are controlled to increase to their corresponding intermediate openings until the openings of bridge gate No. 1 and bridge gate No. 2 are both zero.

[0037] The disclosed embodiment converts the first bridge gate opening information corresponding to the first main steam valve into the second bridge gate opening information corresponding to the second main steam valve according to the corresponding relationship between the predicted bridge gate opening and the flow rate, thereby ensuring the flow balance of the two main steam valves during the tightness test, thereby improving the accuracy of the subsequent tightness test results; and synchronously controls the reduction and increase of the openings of the bridge gates corresponding to the first main steam valve and the second main steam valve at a preset speed, thereby avoiding the impact and damage to the turbine caused by the sudden change of the bridge gate opening, thereby further improving the accuracy of the subsequent tightness test results on the basis of improving the safety of the tightness test process.

[0038] In a feasible implementation manner, in step S104, performing a tightness test on the first main steam valve according to the first load and the second load to obtain a tightness test result includes: determining one half of the first load as a load threshold; When the second load is less than the load threshold, a tightness test is performed on the first main steam valve to obtain a tightness test result.

[0039] For example, when the first load is 35 kW, the load threshold is 17.5 kW. When the second load of the steam turbine is less than 17.5 kW, a tightness test is performed on the first main steam valve to obtain a tightness test result.

[0040] In a feasible implementation manner, in step S104, performing a tightness test on the first main steam valve according to the first load and the second load to obtain a tightness test result includes: determining one half of the first load as an intermediate load, and determining a load interval according to the intermediate load; When the second load is within the load range, a tightness test is performed on the first main steam valve to obtain a tightness test result.

[0041] It is worth noting that the load range can be determined based on the intermediate load combined with the fluctuation range according to the load fluctuation range during the actual operation of the steam turbine, and the present disclosure does not limit this.

[0042] For example, when the first load is 35 kW, or the intermediate load is 17.5 kW, the load range is 15-17 kW. When the second load of the steam turbine is between 15-17 kW, the first main steam valve is tested for tightness to obtain a tightness test result.

[0043] In the embodiment of the present disclosure, when the second load is less than the load threshold or the second load is in load interval four, the steam turbine is in a low-load operating state. At this time, a tightness test is performed to promptly detect problems such as leakage or loose sealing that may occur in the steam turbine during load changes, thereby avoiding safety accidents caused by these problems during high-load operation, and ensuring the stable operation of the steam turbine under low load, reducing downtime caused by faults, and improving the overall operation safety.

[0044] In a feasible implementation manner, in step S104, performing a tightness test on the first main steam valve to obtain a tightness test result includes: detecting a closing state of the first main steam valve; When the first main steam valve is in a closed state, a test result is obtained for indicating that the first main steam valve is tight and qualified; When the first main steam valve is not in a closed state, a detection result indicating that the tightness of the first main steam valve is unqualified is obtained.

[0045] In the disclosed embodiment, the main steam valve is tested for tightness according to the first load and the second load of the steam turbine, which does not require multiple tests and has a short data processing time, thereby increasing the speed of the tightness test and reducing the test cost.

[0046] like Figure 2 As shown, the complete process of the steam turbine tightness detection method provided by the present disclosure may include the following steps: In step S101, a first load of a steam turbine is acquired, wherein the steam turbine includes a first main steam valve and a second main steam valve.

[0047] In step S1021, first bridge door opening information corresponding to the first main steam valve is determined, and the first bridge door opening information includes a first opening of a first bridge door connected to the first main steam valve and a second opening of a second bridge door connected to the first main steam valve.

[0048] In step S1022, based on the correspondence between the preset bridge gate opening and the flow rate, the first flow rate of the steam turbine when the first bridge gate is at the first opening and the second bridge gate is at the second opening, and the second flow rate of the steam turbine when the openings of the first bridge gate and the second bridge gate are both zero are determined.

[0049] In step S1023, the flow difference between the first flow and the second flow is determined, and based on the correspondence between the preset bridge gate opening and the flow and the flow difference, the third opening of the third bridge gate connected to the second main steam valve in the steam turbine and the fourth opening of the fourth bridge gate connected to the second main steam valve are determined to obtain the second bridge gate opening information corresponding to the second main steam valve.

[0050] In step S1031, the first bridge door is controlled to decrease from the first opening at a preset speed, and the second bridge door is controlled to decrease from the second opening at the preset speed, and the opening of the third bridge door is controlled to increase to the third opening at the preset speed, and the opening of the fourth bridge door is controlled to increase to the fourth opening at the preset speed, until the first bridge door and the second bridge door are both in a closed state.

[0051] In step S1032, a second load of the steam turbine is obtained.

[0052] In step S1041, half of the first load is determined as a load threshold.

[0053] In step S1042, when the second load is less than the load threshold, the closing state of the first main steam valve is detected, and step S1043 or step S1044 is executed.

[0054] In step S1043, when the first main steam valve is in a closed state, a test result indicating that the first main steam valve has qualified tightness is obtained.

[0055] In step S1044, when the first main steam valve is not in a closed state, a detection result indicating that the tightness of the first main steam valve is unqualified is obtained.

[0056] During the tightness test of the first main steam valve in the disclosed embodiment, when the openings of the first bridge gate and the second bridge gate connected to the first main steam valve are controlled to decrease, the openings of the third bridge gate and the fourth bridge gate connected to the second main steam valve are synchronously controlled to increase, thereby maintaining the air intake in the turbine in a balanced state, avoiding large fluctuations in the unit load due to changes in the air intake in the turbine, and ensuring the reliability of the tightness test results.

[0057] Based on the same inventive concept, the present disclosure also provides a steam turbine tightness detection device, such as Figure 3 As shown, the steam turbine tightness detection device includes an acquisition module 301 , a determination module 302 , a control module 303 and a detection module 304 .

[0058] Wherein, the acquisition module 301 is configured to acquire a first load of a steam turbine, wherein the steam turbine includes a first main steam valve and a second main steam valve; The determination module 302 is configured to determine the first bridge door opening information corresponding to the first main steam valve, and convert the first bridge door opening information into the second bridge door opening information corresponding to the second main steam valve while keeping the flow of the steam turbine unchanged; The control module 303 is configured to control the opening of the bridge gate connected to the first main steam valve to decrease at a preset speed, and synchronously control the opening of the bridge gate connected to the second main steam valve to increase at the preset speed according to the second bridge gate opening information, until the bridge gate connected to the first main steam valve is in a closed state, and obtain the second load of the steam turbine; The detection module 304 is configured to perform a tightness detection on the first main steam valve according to the first load and the second load to obtain a tightness detection result.

[0059] In the disclosed embodiment, while keeping the flow rate of the steam turbine unchanged, the first bridge door opening information corresponding to the first main steam valve is converted into the second bridge door opening information corresponding to the second main steam valve, ensuring the stability of the flow rate of the steam turbine during the tightness detection process, thereby improving the accuracy of the subsequent tightness detection results; the reduction and increase of the opening of the bridge door corresponding to the first main steam valve and the second main steam valve are synchronously controlled by the preset speed, avoiding the impact and damage to the steam turbine caused by the sudden change of the bridge door opening, and further improving the accuracy of the subsequent tightness detection results on the basis of improving the safety of the tightness detection process; the tightness detection of the main steam valve is carried out according to the first load and the second load of the steam turbine, without multiple detections and the data processing time is short, thereby improving the speed of the tightness detection and reducing the detection cost. Moreover, the steam turbine tightness detection method is not only applicable to the tightness detection of the first main steam valve, but also can be used for the tightness detection of the second main steam valve or other related components in the steam turbine, with high flexibility and scalability.

[0060] In a feasible implementation manner, the first bridge door opening information includes a first opening of a first bridge door connected to the first main steam valve and a second opening of a second bridge door connected to the first main steam valve; The determination module 302 is configured to determine, according to a correspondence between a preset bridge gate opening and a flow rate, a first flow rate of the steam turbine when the first bridge gate is at the first opening and the second bridge gate is at the second opening, and a second flow rate of the steam turbine when the openings of the first bridge gate and the second bridge gate are both zero; Determine the flow difference between the first flow and the second flow, and determine the third opening of the third bridge gate connected to the second main steam valve in the steam turbine and the fourth opening of the fourth bridge gate connected to the second main steam valve based on the correspondence between the preset bridge gate opening and the flow and the flow difference, and obtain the second bridge gate opening information corresponding to the second main steam valve.

[0061] In a feasible embodiment, the control module 303 is configured to control the first bridge door to decrease from the first opening at a preset speed, and the second bridge door to decrease from the second opening at the preset speed, and control the opening of the third bridge door to increase to the third opening at the preset speed, and control the opening of the fourth bridge door to increase to the fourth opening at the preset speed, until the first bridge door and the second bridge door are both in a closed state.

[0062] In a feasible implementation manner, the detection module 304 is configured to determine one half of the first load as the load threshold; When the second load is less than the load threshold, a tightness test is performed on the first main steam valve to obtain a tightness test result.

[0063] In a feasible implementation manner, the detection module 304 is configured to determine one half of the first load as an intermediate load, and determine a load interval according to the intermediate load; When the second load is within the load range, a tightness test is performed on the first main steam valve to obtain a tightness test result.

[0064] In a feasible implementation manner, the detection module 304 is configured to detect the closing state of the first main steam valve; When the first main steam valve is in a closed state, a test result is obtained for indicating that the first main steam valve is tight and qualified; When the first main steam valve is not in a closed state, a detection result indicating that the tightness of the first main steam valve is unqualified is obtained.

[0065] Regarding the steam turbine tightness detection device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0066] Based on the same inventive concept, the present disclosure also provides an electronic device, including: a memory having a computer program stored thereon; A processor is used to execute the computer program in the memory to implement the above-mentioned steam turbine tightness detection method.

[0067] In the disclosed embodiment, while keeping the flow rate of the steam turbine unchanged, the first bridge door opening information corresponding to the first main steam valve is converted into the second bridge door opening information corresponding to the second main steam valve, ensuring the stability of the flow rate of the steam turbine during the tightness detection process, thereby improving the accuracy of the subsequent tightness detection results; the reduction and increase of the opening of the bridge door corresponding to the first main steam valve and the second main steam valve are synchronously controlled by the preset speed, avoiding the impact and damage to the steam turbine caused by the sudden change of the bridge door opening, and further improving the accuracy of the subsequent tightness detection results on the basis of improving the safety of the tightness detection process; the tightness detection of the main steam valve is carried out according to the first load and the second load of the steam turbine, without multiple detections and the data processing time is short, thereby improving the speed of the tightness detection and reducing the detection cost. Moreover, the steam turbine tightness detection method is not only applicable to the tightness detection of the first main steam valve, but also can be used for the tightness detection of the second main steam valve or other related components in the steam turbine, with high flexibility and scalability.

[0068] Figure 4 FIG. 4 is a block diagram of an electronic device 400 according to an exemplary embodiment. Figure 4As shown, the electronic device 400 may include: a processor 401 , a memory 402 . The electronic device 400 may also include one or more of a multimedia component 403 , an input / output (I / O) interface 404 , and a communication component 405 .

[0069] The processor 401 is used to control the overall operation of the electronic device 400 to complete all or part of the steps in the above-mentioned steam turbine tightness detection method. The memory 402 is used to store various types of data to support the operation of the electronic device 400, and these data may include, for example, instructions for any application or method used to operate on the electronic device 400, and application-related data, such as the first load, the second load, the first bridge door opening information, the second bridge door opening information, and the preset speed, etc. The memory 402 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 403 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone, which is used to receive external audio signals. The received audio signal may be further stored in the memory 402 or sent through the communication component 405. The audio component also includes at least one speaker for outputting audio signals. The input / output (I / O) interface 404 provides an interface between the processor 401 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 405 is used for wired or wireless communication between the electronic device 400 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 405 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0070] In an exemplary embodiment, the electronic device 400 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned turbine tightness detection method.

[0071] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned steam turbine tightness detection method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 402 including program instructions, and the above-mentioned program instructions can be executed by the processor 401 of the electronic device 400 to complete the above-mentioned steam turbine tightness detection method.

[0072] In another exemplary embodiment, a computer program product is further provided. The computer program product includes a computer program executable by a programmable device, and the computer program has a code portion for executing the above-mentioned steam turbine tightness detection method when executed by the programmable device.

[0073] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0074] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0075] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A steam turbine tightness detection method, characterized in that: include: Acquiring a first load of a steam turbine, wherein the steam turbine includes a first main steam valve and a second main steam valve; Determine the first bridge door opening information corresponding to the first main steam valve, and convert the first bridge door opening information into the second bridge door opening information corresponding to the second main steam valve while keeping the flow of the steam turbine unchanged; Controlling the opening of the bridge gate connected to the first main steam valve to decrease at a preset speed, and synchronously controlling the opening of the bridge gate connected to the second main steam valve to increase at the preset speed according to the second bridge gate opening information, until the bridge gate connected to the first main steam valve is in a closed state, and obtaining a second load of the steam turbine; According to the first load and the second load, a tightness test is performed on the first main steam valve to obtain a tightness test result.

2. The steam turbine tightness detection method according to claim 1, characterized in that: The first bridge door opening information includes a first opening of a first bridge door connected to the first main steam valve and a second opening of a second bridge door connected to the first main steam valve; The converting the first bridge door opening information into the second bridge door opening information corresponding to the second main steam valve while keeping the flow rate of the steam turbine unchanged comprises: According to a correspondence between a preset bridge gate opening and a flow rate, determining a first flow rate of the steam turbine when the first bridge gate is at the first opening and the second bridge gate is at the second opening, and a second flow rate of the steam turbine when the openings of the first bridge gate and the second bridge gate are both zero; Determine the flow difference between the first flow and the second flow, and determine the third opening of the third bridge gate connected to the second main steam valve in the steam turbine and the fourth opening of the fourth bridge gate connected to the second main steam valve based on the correspondence between the preset bridge gate opening and the flow and the flow difference.

3. The steam turbine tightness detection method according to claim 2, characterized in that: The controlling the opening of the bridge door connected to the first main steam valve to decrease at a preset speed, and synchronously controlling the opening of the bridge door connected to the second main steam valve to increase at the preset speed according to the second bridge door opening information until the bridge door connected to the first main steam valve is in a closed state, comprises: The first bridge door is controlled to decrease from the first opening at a preset speed, and the second bridge door is controlled to decrease from the second opening at the preset speed, and the opening of the third bridge door is controlled to increase to the third opening at the preset speed, and the opening of the fourth bridge door is controlled to increase to the fourth opening at the preset speed, until the first bridge door and the second bridge door are both in a closed state.

4. The steam turbine tightness detection method according to any one of claims 1 to 3, characterized in that: The step of performing a tightness test on the first main steam valve according to the first load and the second load to obtain a tightness test result includes: determining one half of the first load as a load threshold; When the second load is less than the load threshold, a tightness test is performed on the first main steam valve to obtain a tightness test result.

5. The steam turbine tightness detection method according to any one of claims 1 to 3, characterized in that: The step of performing a tightness test on the first main steam valve according to the first load and the second load to obtain a tightness test result includes: determining one half of the first load as an intermediate load, and determining a load interval according to the intermediate load; When the second load is within the load range, a tightness test is performed on the first main steam valve to obtain a tightness test result.

6. The steam turbine tightness detection method according to any one of claims 1 to 3, characterized in that: The step of performing a tightness test on the first main steam valve to obtain a tightness test result includes: detecting a closing state of the first main steam valve; When the first main steam valve is in a closed state, a test result is obtained for indicating that the first main steam valve is tight and qualified; When the first main steam valve is not in a closed state, a detection result indicating that the tightness of the first main steam valve is unqualified is obtained.

7. A steam turbine tightness detection device, characterized in that: include: an acquisition module configured to acquire a first load of a steam turbine, the steam turbine comprising a first main steam valve and a second main steam valve; a determination module configured to determine first bridge door opening information corresponding to the first main steam valve, and convert the first bridge door opening information into second bridge door opening information corresponding to the second main steam valve while keeping the flow of the steam turbine unchanged; a control module configured to control the opening of the bridge gate connected to the first main steam valve to decrease at a preset speed, and synchronously control the opening of the bridge gate connected to the second main steam valve to increase at the preset speed according to the second bridge gate opening information, until the bridge gate connected to the first main steam valve is in a closed state, and obtain a second load of the steam turbine; The detection module is configured to perform a tightness detection on the first main steam valve according to the first load and the second load to obtain a tightness detection result.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

9. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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