Online independent transmission test method and system based on thermal power plant target electromagnetic valve

Abstract

The invention relates to the technical field of image enhancement, in particular to an online independent transmission test method and system based on a target electromagnetic valve of a thermal power plant, and the method comprises the steps: confirming a neutral-point-free pressure high signal or a neutral-point-free pressure low signal; and the test on the target electromagnetic valve is realized by starting the test permission button and the target test button in sequence. The test permission button comprises a first test permission button and a second test permission button. The target test buttons comprise an AST1 target test button, an AST2 target test button, an AST3 target test button and an AST4 target test button. The beneficial effects of the invention are that the on-line independent transmission test function of the AST solenoid valve can be realized during the normal operation period of a unit, the problem of a steam turbine emergency trip control device can be found in time, and the important guarantee is provided for the safe operation of the steam turbine and the reliable shutdown operation under the emergency condition.

Description

Technical Field

[0001] The invention relates to the technical field of image enhancement, in particular to an online independent transmission test method and system based on a target electromagnetic valve in a thermal power plant. Background Art

[0002] The emergency trip control device of the steam turbine in a thermal power plant uses a target solenoid valve to realize the emergency shutdown protection function of the steam turbine, which is an important device to ensure the safety and reliability of the steam turbine. Generally, the emergency trip control device of the steam turbine is composed of four target solenoid valves, forming a "two or one and" relationship. When one of the solenoid valves 1, 3 and 2, 4 loses magnetism, the steam turbine will trip and stop. Therefore, an online independent transmission test method and system based on the target solenoid valve of a thermal power plant is proposed. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above existing problems, the present invention is proposed.

[0005] Therefore, the present invention provides an online independent transmission test method and system based on a target solenoid valve of a thermal power plant, which can solve the problems mentioned in the background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] In a first aspect, the present invention provides an online independent transmission test method and system based on a target solenoid valve in a thermal power plant, including confirming that there is no neutral point pressure high signal or no neutral point pressure low signal;

[0008] By starting the test permission button and the target test button in sequence, the target solenoid valve can be tested.

[0009] As a preferred solution of the method and system for online independent transmission test of target solenoid valves in thermal power plants of the present invention, the test permission button includes a first test permission button and a second test permission button.

[0010] As a preferred solution of the online independent transmission test method and system based on the target solenoid valve of a thermal power plant of the present invention, the target test buttons include AST1, AST2, AST3 and AST4 target test buttons.

[0011] As a preferred solution of the online independent transmission test method and system for the target solenoid valve in a thermal power plant of the present invention, when no neutral point pressure high signal is displayed, the AST1 or AST3 target test is performed as a separate test.

[0012] As a preferred solution of the online independent transmission test method and system based on the target solenoid valve of a thermal power plant of the present invention, when there is no neutral point pressure low signal displayed, the AST2 or AST4 target test button is tested separately.

[0013] As a preferred solution of the method and system for online independent transmission test of target solenoid valves in thermal power plants of the present invention, the AST1 or AST3 target test button includes:

[0014] Starting the first test permission button will implement the test of AST1 or AST3 target test button.

[0015] As a preferred solution of the method and system for online independent transmission test of target solenoid valves in thermal power plants of the present invention, the AST2 or AST4 target test button includes:

[0016] Starting the second test enable button will implement the test of AST2 or AST4 target test button.

[0017] In a second aspect, the present invention provides an online independent transmission test system based on a target solenoid valve in a thermal power plant, comprising: a construction module for constructing and opening corresponding test permission buttons, wherein the test permission buttons include a first test permission button and a second test permission button;

[0018] The test module is used to turn on the corresponding target test button after the corresponding test permission button is pressed to start the test.

[0019] In a third aspect, the present invention provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and wherein the processor implements the steps of the method described in any one of claims 1 to 7 when executing the computer program.

[0020] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method described in any one of claims 1 to 7.

[0021] Compared with the prior art, the present invention has the following beneficial effects: the online independent transmission test function of the AST solenoid valve can be realized during the normal operation of the unit, ensuring timely discovery of problems with the emergency shutdown control device of the turbine, providing important guarantees for the safe operation of the turbine and reliable shutdown operation in emergency situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 It is a flow chart of the online independent transmission test method and system based on the target solenoid valve of thermal power plant.

[0024] Figure 2 This is a schematic diagram of the structure of the target test button.

[0025] Figure 3 A schematic diagram of the internal structure of a computer device. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] Reference Figure 1 to Figure 3 , which is the first embodiment of the present invention, and provides an online independent transmission test method and system based on a target solenoid valve of a thermal power plant, which includes:

[0031] S1. Confirm that there is no neutral point pressure high signal or no neutral point pressure low signal.

[0032] It should be noted that in the target solenoid valve device, when the AST1 and AST3 target test buttons are actuated at the same time, the system will send a neutral point pressure high signal. This signal indicates that the AST1 and AST3 target test buttons have been actuated, and "no neutral point pressure high signal" means that the system does not detect the simultaneous actuation of the AST1 and AST3 target test buttons, indicating that only the AST1 or AST3 target test button is performing a separate test;

[0033] In the target solenoid valve device, when the AST2 and AST4 target test buttons are actuated at the same time, the system will send a neutral point pressure low signal. This signal indicates that the AST2 and AST4 target test buttons have been actuated, and "no neutral point pressure low signal" means that the system does not detect the simultaneous actuation of the AST2 and AST4 target test buttons, indicating that only the AST2 or AST4 target test button is conducting a separate test.

[0034] These two signals play the role of allowing the locking condition and test reset condition when the target test button is tested online independently. They ensure that when a single target test button is tested online, the entire emergency trip system will not be activated due to the failure of a certain solenoid valve, thereby avoiding the occurrence of unit tripping accidents. By monitoring these two signals, a single solenoid valve test can be safely performed to ensure the safe operation of the steam turbine.

[0035] It should be further explained that the lockout condition is that when there is no neutral point pressure high signal or no neutral point pressure low signal in the system, the first test permission button or the second test permission button is allowed to be opened, and before starting the target test button test, it must be ensured that no other solenoid valve test is in progress;

[0036] The test reset condition refers to the condition used to automatically terminate the test and restore to the initial state when the target test button is conducting an online independent transmission test, where the test reset condition includes the test permission button exit or the neutral point pressure signal delay.

[0037] Test permission button exit means that when the corresponding test permission button (such as the first test permission button and the second test permission button) is manually exited by the operator, the relevant target test button (such as AST1, AST3, AST2, AST4 target test button) will automatically exit, the test is terminated, and the target solenoid valve returns to the initial state;

[0038] Neutral point pressure signal delay means that when a neutral point pressure high signal (for AST1 and AST3 target solenoid valves) or a neutral point pressure low signal (for AST2 and AST4 target solenoid valves) is detected during the test, and the signal persists for more than the set delay time (usually 10 seconds), the target test button (such as AST1, AST3, AST2, AST4 target test button) will automatically exit, the test will terminate, and the target solenoid valve will return to its initial state.

[0039] Further,

[0040] S2. Start the test permission button and the target test button in sequence to test the target solenoid valve.

[0041] It should be noted that there is no particular order in which the test enable buttons (the first test enable button and the second test enable button) and the target test buttons (AST1, AST2, AST3 and AST4 target test buttons) can be started. The solenoid valve (the first solenoid valve, the second solenoid valve, the third solenoid valve or the fourth solenoid valve) can be selected for testing according to the actual operating conditions, among which the AST1, AST2, AST3 and AST4 target test buttons control the first solenoid valve, the second solenoid valve, the third solenoid valve or the fourth solenoid valve respectively.

[0042] Further, the first test enable button can implement the AST1 or AST3 target test button to conduct a test.

[0043] It should be noted that the first test allows the button to test the AST1 or AST3 target test button in no particular order.

[0044] Further, when the first test permission button is started and there is no test on the second solenoid valve, the third solenoid valve or the fourth solenoid valve, the AST1 target test button is started, and the first solenoid valve can be tested.

[0045] Further, when the first test permission button is activated and there is no test on the first solenoid valve, the second solenoid valve or the fourth solenoid valve, the AST3 target test button is activated, and the third solenoid valve can be tested.

[0046] Furthermore, the test start command is sent to the first test relay or the third test relay through the DEH control system controller and the output card, the relay coil is energized and actuated, the first solenoid valve or the third solenoid valve coil connected to the normally closed contact loses power, and the solenoid valve is actuated.

[0047] Furthermore, if the test is normal, the operator can release the test by pressing the first target test button.

[0048] Furthermore, if the neutral point pressure high signal comes during the test and is delayed for 10 seconds, or the operator releases the first test permission button, the AST1 target test button will be automatically released.

[0049] Further, the second test enable button can implement the AST2 or AST4 target test button to conduct a test.

[0050] It should be noted that the second test allows the button to test the AST2 or AST4 target test button in no particular order.

[0051] Further, when the second test permission button is activated and there is no test on the first solenoid valve, the third solenoid valve or the fourth solenoid valve, the AST2 target test button is activated, and the second solenoid valve can be tested.

[0052] Further, when the second test permission button is activated and there is no test on the first solenoid valve, the second solenoid valve or the third solenoid valve, the AST4 target test button is activated, and the fourth solenoid valve can be tested.

[0053] Furthermore, the test start command is sent to the second test relay or the fourth test relay through the DEH control system controller and the output card, the relay coil is energized and actuated, the second solenoid valve or the fourth solenoid valve coil connected to the normally closed contact loses power, and the solenoid valve is actuated.

[0054] Furthermore, if the test is normal, the operator can release the test by pressing the first target test button.

[0055] Furthermore, if the neutral point pressure high signal comes during the test and is delayed for 10 seconds, or the operator releases the first test permission button, the AST1 target test button will be automatically released.

[0056] In summary, the beneficial effect of an online independent transmission test method and system based on the target solenoid valve of a thermal power plant is that the online independent transmission test function of the AST solenoid valve can be realized during the normal operation of the unit, ensuring timely discovery of problems with the emergency shutdown control device of the turbine, and providing important guarantees for the safe operation of the turbine and reliable shutdown operation in emergency situations.

[0057] Example 2

[0058] This embodiment provides an online independent transmission test system based on a target solenoid valve of a thermal power plant, which includes a construction module for constructing and opening a corresponding test permission button, wherein the test permission button includes a first test permission button and a second test permission button;

[0059] The test module is used to open the corresponding target test button after the corresponding test permission button is pressed to start testing the target solenoid valve.

[0060] The above-mentioned unit modules may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to the above-mentioned modules.

[0061] Example 3

[0062] This embodiment provides a computer device, which may be a terminal, and its internal structure diagram may be as follows: Figure 3 As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, an online independent transmission test method and system based on a target solenoid valve of a thermal power plant is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a key, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse, etc.

[0063] This embodiment also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements: constructing and training a target network model, wherein the target network model includes an edge extraction submodule, a dynamic selection submodule, a feature extraction submodule, and an image enhancement submodule; processing the degraded underground cable X-ray image through the target network model and generating a fused feature map; inputting the fused feature map into the image enhancement submodule to generate an enhanced underground cable X-ray image.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An online independent transmission test method based on a target solenoid valve in a thermal power plant, characterized in that: include, Confirm that there is no high neutral point pressure signal or low neutral point pressure signal; By starting the test permission button and the target test button in sequence, the target solenoid valve can be tested.

2. The method for online independent transmission test of target solenoid valves in thermal power plants according to claim 1 is characterized in that: The test permission buttons include a first test permission button and a second test permission button.

3. The method for online independent transmission test of target solenoid valves in thermal power plants according to claim 2 is characterized in that: The target test buttons include AST1, AST2, AST3 and AST4 target test buttons.

4. The method for online independent transmission test of target solenoid valves in thermal power plants according to claim 3 is characterized in that: When there is no neutral point pressure high signal displayed, the AST1 or AST3 target test is pressed in the single test.

5. The method for online independent transmission test of target solenoid valves in thermal power plants according to claim 4 is characterized in that: When there is no neutral point pressure low signal displayed, the AST2 or AST4 target test button is in a separate test.

6. The method for online independent transmission test of target solenoid valves in thermal power plants according to any one of claims 1 to 5, characterized in that: The AST1 or AST3 target test button includes, Starting the first test permission button will implement the test of AST1 or AST3 target test button.

7. The method for online independent transmission test of target solenoid valves in thermal power plants according to claim 6 is characterized in that: The AST2 or AST4 target test button includes, Starting the second test enable button will implement the test of AST2 or AST4 target test button.

8. An online independent transmission test system based on a target solenoid valve in a thermal power plant, characterized in that: include: A construction module, used to construct and enable corresponding test permission buttons, wherein the test permission buttons include a first test permission button and a second test permission button; The test module is used to start the test by pressing the corresponding test permission button and then activating the corresponding target test button.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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