Hydraulic damper assembly and piping assembly for piping involving a nuclear, nuclear power plant and method for detecting displacement thereof

Abstract

This application relates to the field of motion dampers, such as springs, dampers, shock absorbers, or similar structures that use fluid or equivalent materials as damping media. In particular, it relates to a hydraulic damper assembly and piping assembly suitable for use in nuclear-related pipelines, nuclear power plants, and a method for detecting their displacement. The hydraulic damper assembly provided in this application, through the interaction of a hydraulic damper, a linear variable differential transformer, and a fixed component, allows the displacement of the hydraulic damper to generate a linear voltage output from the linear variable differential transformer. By measuring this voltage output, the displacement state of the hydraulic damper can be determined at any time. This reduces the workload required for the operation and maintenance of nuclear-related pipelines, and improves the level of automated management of reactor safety.

Description

Technical Field

[0001] Embodiments of this application relate to the field of motion dampers, such as springs, dampers, shock absorbers, or similar structures that use fluid or equivalent as damping media, and particularly to a hydraulic damper assembly and piping assembly suitable for use in nuclear-related pipelines, nuclear power plants, and a method for detecting their displacement. Background Technology

[0002] The statements herein are provided merely as background information in connection with this application and do not necessarily constitute prior art.

[0003] Hydraulic dampers are critical equipment in nuclear power plants, ensuring the safety of reactor piping. When pipes or equipment move slowly due to thermal expansion and contraction, the hydraulic fluid inside the damper flows smoothly through the valves with minimal resistance, hardly affecting the free displacement of the equipment. In the event of a sudden accident such as an earthquake or coolant loss, the valves inside the damper quickly close, locking the hydraulic circuit and generating a huge damping force, thereby limiting the violent displacement of the equipment and protecting the critical equipment of the reactor from damage caused by the sudden impact. Summary of the Invention

[0004] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0005] One aspect of this application provides a hydraulic damper assembly suitable for use in nuclear pipelines, comprising: a hydraulic damper disposed in the pipeline to improve the pipeline's vibration resistance; a linearly variable differential transformer configured to detect the displacement of the hydraulic damper; and a fixing assembly configured to connect the linearly variable differential transformer to the hydraulic damper, the linearly variable differential transformer being configured to convert the detected displacement into an electrical signal and transmit it to the outside.

[0006] The hydraulic damper assembly provided in the embodiments of this application, through the cooperation between the hydraulic damper, the linear variable differential transformer, and the fixed components, enables the displacement of the hydraulic damper to generate a linear voltage output from the linear variable differential transformer. By measuring this voltage output, the displacement state of the hydraulic damper can be determined at any time, thereby reducing the workload required for the operation and inspection and maintenance of nuclear-related pipelines and improving the level of automated management of reactor safety.

[0007] Another aspect of the embodiments of this application provides a method for detecting the displacement of a hydraulic damper in a pipeline involving a nuclear source. This method employs the aforementioned hydraulic damper assembly and includes the following steps: a linear variable differential transformer determines the displacement of the hydraulic damper; the linear variable differential transformer determines the corresponding electrical signal based on the displacement; the electrical signal is output to an external source; and the displacement of the hydraulic damper is determined based on the electrical signal. Attached Figure Description

[0008] To further illustrate the above and other advantages and features of this application, the specific embodiments of this application will be described in more detail below with reference to the accompanying drawings. The drawings, together with the following detailed description, are included in and form a part of this specification. Elements having the same function and structure are indicated by the same reference numerals. It should be understood that these drawings only depict typical examples of this application and should not be considered as limiting the scope of this application.

[0009] Figure 1 This is a schematic diagram of a hydraulic damper assembly provided in an embodiment of this application.

[0010] Explanation of reference numerals in the attached figures: 1. Hydraulic damper assembly; 10. Hydraulic damper; 11. Hydraulic damper body; 12. Cylinder; 13. Outer shell; 20. Linear variable differential transformer; 21. Transformer bushing; 22. Transformer connecting rod; 23. Transformer body; 30. Fixing component; 31. First fixing element; 32. Second fixing element. Detailed Implementation

[0011] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0012] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0013] The following disclosure provides several different implementations or examples for carrying out this application. To simplify the disclosure of this application, specific examples of components and methods are described below. Of course, these are merely examples and are not intended to limit this application. In the description of the embodiments of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0014] In related technologies, hydraulic dampers are crucial supports for process piping in nuclear power plants. When the piping undergoes thermal displacement, the damper's cylinder moves accordingly, and the position of the scale strips on the outside of the cylinder changes accordingly. During the operation or overhaul phase of a nuclear power plant, when maintenance personnel directly read the damper's displacement using the scale strips on the outside of the cylinder, the reading efficiency is low and the readings are inaccurate.

[0015] To address the aforementioned technical problems, one embodiment of this application provides a hydraulic damper assembly suitable for use in nuclear-related pipelines. Figure 1 This is a schematic diagram of a hydraulic damper assembly provided in an embodiment of this application. Figure 1 As shown, it includes: a hydraulic damper 10, which is installed in the pipeline to improve the pipeline's vibration resistance; a linear variable differential transformer 20, which is configured to detect the displacement of the hydraulic damper 10; and a fixing assembly 30, which is configured to connect the linear variable differential transformer 20 to the hydraulic damper 10, the linear variable differential transformer 20 being configured to convert the obtained displacement into an electrical signal and transmit it to the outside.

[0016] The hydraulic damper assembly 1, through the cooperation of the hydraulic damper 10, the linear variable differential transformer 20, and the fixed assembly 30, enables the hydraulic damper 10 to improve the vibration resistance of nuclear-related pipelines. When the nuclear-related pipelines are displaced, causing the hydraulic damper 10 to follow suit, the displacement of the hydraulic damper 10 can cause the linear variable differential transformer 20 to generate a linear voltage output. By measuring this voltage output, the displacement state of the hydraulic damper 10 can be determined at any time without the need for direct reading and measurement of the scale on the cylinder 12 of the hydraulic damper 10. This reduces the workload of supervision required for the operation and inspection and maintenance of nuclear-related pipelines, and improves the level of automated management of reactor safety.

[0017] In some embodiments, such as Figure 1 As shown, the hydraulic damper 10 includes a hydraulic damper body 11, a cylinder 12, and a shell 13. The hydraulic damper body 11 is disposed inside the cylinder 12. The cylinder 12 is fixedly connected to the shell 13. The shell 13 is configured to be fixedly connected to the pipes involved in the core. The fixing components 30 are respectively configured to be fixedly connected to the cylinder 12 and the shell 13, so that the linear variable differential transformer 20 is connected to the hydraulic damper 10.

[0018] In such an embodiment, the displacement of the cylinder 12 and the outer shell 13 is limited to a certain range. If the displacement exceeds this range, the cylinder 12 and the outer shell 13 will jam, restricting further movement of the pipeline.

[0019] The embodiments of this application, by setting the hydraulic damper body 11 inside the cylinder 12, can protect the hydraulic damper body 11. By setting the cylinder 12 and the outer shell 13 to be fixedly connected, and the outer shell 13 is set to be fixedly connected to the pipeline, when the pipeline involving the core undergoes thermal displacement during operation, the hydraulic damper body 11, through the cylinder 12 and the outer shell 13, restricts the displacement of the pipeline involving the core, thereby further enhancing the shockproof effect of the hydraulic damper 10 on the pipeline involving the core.

[0020] In the embodiments of this application, a fixing component 30 is fixedly connected to the cylinder 12 and the outer shell 13 respectively, so that the linear variable differential transformer 20 is connected to the hydraulic damper 10. This allows the displacement of the cylinder 12 and the outer shell 13 to be transmitted to the linear variable differential transformer 20 through the fixing component 30, thereby causing the linear variable differential transformer 20 to generate displacement and converting the displacement state into an electrical signal.

[0021] In some embodiments, such as Figure 1 As shown, the linear variable differential transformer 20 includes a transformer sleeve 21, a transformer connecting rod 22, and a transformer body 23. The transformer body 23 is disposed inside the transformer sleeve 21. The transformer connecting rod 22 is configured to be connected to the transformer sleeve 21. The fixing assembly 30 is respectively configured to be fixedly connected to the transformer sleeve 21 and the transformer connecting rod 22, so that the linear variable differential transformer 20 is connected to the hydraulic damper 10. The transformer body 23 is configured to detect the displacement of the hydraulic damper 10 and convert it into an electrical signal.

[0022] In this embodiment, driven by the displacement of the hydraulic damper 10, the transformer sleeve 21 and the transformer connecting rod 22 will undergo relative displacement, and the displacement value of the transformer body 23 in the transformer sleeve 21 is linearly related to the voltage value output by the transformer body 23.

[0023] In this embodiment, specifically, the transformer body 23 is an LVDT (Linear Variable Differential Transformer) sensor, which includes an iron core and a signal line. The iron core can undergo relative displacement with respect to the transformer connecting rod 22 within the transformer sleeve 21, and the signal line can convert the linear motion of the iron core into a corresponding electrical signal. During fixed installation, the stroke range of the hydraulic damper 10 should be kept consistent with the stroke range of the iron core so that the displacement value of the iron core accurately reflects the displacement value of the hydraulic damper 10 and has a linear relationship with the voltage value output by the signal line.

[0024] The embodiments of this application, by setting a transformer body 23 inside a transformer sleeve 21, setting a transformer connecting rod 22 connected to the transformer sleeve 21, and setting a fixing component 30 fixedly connected to the transformer sleeve 21 and the transformer connecting rod 22 respectively, so that the linear variable differential transformer 20 is connected to the hydraulic damper 10. Based on the above structure, the transformer body 23 can detect the displacement of the hydraulic damper 10 and convert it into an electrical signal. The displacement value and the voltage value are linearly related. By detecting the voltage value output by the transformer body 23, the displacement value of the hydraulic damper 10 can be determined. Thus, the workload of directly reading the hydraulic damper 10 is saved, the error caused by human reading is avoided, and the accuracy and convenience of vibration management of pipelines involving nuclear power are improved. Moreover, its setting is simple. It only relies on the spontaneous follow-up of the hydraulic damper 10 and mechanically coupled with it through the linear variable differential transformer 20 to transmit electrical signals. There is no need to set up an additional power supply or other circuit structure, and it will not interfere with the operating pipelines involving nuclear power.

[0025] In some embodiments, such as Figure 1 As shown, the fixing component 30 includes a first fixing member 31 and a second fixing member 32. The first fixing member 31 and the second fixing member 32 are fixedly connected to the linear variable differential transformer 20 and the hydraulic damper 10, respectively, so that the linear variable differential transformer 20 is connected to the hydraulic damper 10.

[0026] In some embodiments, such as Figure 1 As shown, the fixing component 30 includes a first fixing member 31 and a second fixing member 32. The first fixing member 31 is fixedly connected to the transformer connecting rod 22 of the linear variable differential transformer 20 and the cylinder 12 of the hydraulic damper 10. The second fixing member 32 is fixedly connected to the transformer sleeve 21 of the linear variable differential transformer 20 and the outer shell 13 of the hydraulic damper 10.

[0027] In this embodiment, a first fixing member 31 and a second fixing member 32 are respectively fixedly connected to the linear variable differential transformer 20 and the hydraulic damper 10. Specifically, the fixing assembly 30 includes a first fixing member 31 and a second fixing member 32. The first fixing member 31 is fixedly connected to the transformer connecting rod 22 of the linear variable differential transformer 20 and the cylinder 12 of the hydraulic damper 10. The second fixing member 32 is fixedly connected to the transformer sleeve 21 of the linear variable differential transformer 20 and the outer shell 13 of the hydraulic damper 10. This can fix and protect the cylinder 12 and the outer shell 13 of the hydraulic damper 10 respectively, and connect them as a whole to the transformer connecting rod 22 and the transformer sleeve 21. This allows the overall movement of the hydraulic damper 10 to uniformly drive the relative movement of the transformer connecting rod 22 and the transformer sleeve 21, thereby improving the accuracy of the linear variable differential transformer 20 in detecting the displacement state of the hydraulic damper 10.

[0028] In some embodiments, this application also provides a pipeline assembly applicable to nuclear systems, comprising the aforementioned hydraulic damper assembly 1 and a pipeline, wherein the hydraulic damper assembly 1 is disposed on the pipeline to improve the pipeline's vibration resistance.

[0029] In some embodiments, this application also provides a piping assembly applicable to nuclear systems, comprising a pipe, a hydraulic damper 10, and a linear variable differential transformer 20, wherein the hydraulic damper 10 is configured to improve the vibration resistance of the pipe, and the linear variable differential transformer 20 is configured to detect the displacement of the hydraulic damper 10 and convert the displacement into an electrical signal and transmit it to the outside.

[0030] In some embodiments, this application also provides a nuclear power plant that includes the aforementioned nuclear-related piping components.

[0031] To address the aforementioned technical problems, another aspect of the embodiments of this application provides a method for detecting the displacement of a hydraulic damper in a pipeline involving a nuclear source. This method employs the aforementioned hydraulic damper assembly 1 and includes the following steps: a linear variable differential transformer 20 determines the displacement of the hydraulic damper 10; the linear variable differential transformer 20 determines the corresponding electrical signal based on the displacement; the electrical signal is output to the outside; and the displacement of the hydraulic damper 10 is determined based on the electrical signal.

[0032] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0033] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A hydraulic damper assembly suitable for use in nuclear-related pipelines, characterized in that, It includes: A hydraulic damper is installed in the pipeline to improve its vibration resistance; A linear variable differential transformer configured to detect the displacement of the hydraulic damper; A fixing assembly, configured to connect the linear variable differential transformer to the hydraulic damper. The linear variable differential transformer is configured to convert the obtained displacement into an electrical signal and transmit it to the outside.

2. The hydraulic damper assembly according to claim 1, characterized in that, The hydraulic damper includes a hydraulic damper body, a cylinder, and a shell. The hydraulic damper body is disposed inside the cylinder, and the cylinder is fixedly connected to the outer shell. The outer casing is configured to be fixedly connected to the pipe. The fixing components are respectively configured to be fixedly connected to the cylinder and the outer shell, so that the linear variable differential transformer is connected to the hydraulic damper.

3. The hydraulic damper assembly according to claim 1, characterized in that, The linear variable differential transformer includes a transformer bushing, a transformer connecting rod, and a transformer body. The transformer body is disposed inside the transformer sleeve, and the transformer connecting rod is configured to connect to the transformer sleeve. The fixing components are respectively configured to be fixedly connected to the transformer sleeve and the transformer connecting rod, so that the linear variable differential transformer is connected to the hydraulic damper; The transformer body is configured to detect the displacement of the hydraulic damper and convert it into an electrical signal.

4. The hydraulic damper assembly according to claim 1, characterized in that, The fixing assembly includes a first fixing member and a second fixing member, which are respectively fixedly connected to the linear variable differential transformer and the hydraulic damper, so that the linear variable differential transformer is connected to the hydraulic damper.

5. The hydraulic damper assembly according to claim 1, characterized in that, The fixing assembly includes a first fixing member and a second fixing member. The first fixing member is fixedly connected to the transformer connecting rod of the linear variable differential transformer and the cylinder of the hydraulic damper. The second fixing member is fixedly connected to the transformer sleeve of the linear variable differential transformer and the outer shell of the hydraulic damper.

6. A piping assembly suitable for use involving a nuclear core, characterized in that, It includes: The hydraulic damper assembly according to any one of claims 1-5; The hydraulic damper assembly is disposed in the pipeline to improve the pipeline's vibration resistance.

7. A piping assembly suitable for use involving a nuclear core, characterized in that, It includes: Piping, hydraulic dampers, and linear variable differential transformers, The hydraulic damper is configured to improve the vibration resistance of the pipeline. The linear variable differential transformer is configured to detect the displacement of the hydraulic damper and convert the displacement into an electrical signal and transmit it to the outside.

8. A nuclear power plant, characterized in that, It includes the pipe assembly as described in claim 7.

9. A method for detecting the displacement of a hydraulic damper in a pipeline involving a nuclear power plant, characterized in that, The method employs the hydraulic damper assembly as described in any one of claims 1-5.

10. The method according to claim 9, characterized in that, It includes the following steps: The linear variable differential transformer determines the displacement of the hydraulic damper; The linear variable differential transformer determines its corresponding electrical signal based on the displacement; The electrical signal is output to the outside. The displacement of the hydraulic damper is determined based on the electrical signal.

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