Voltage signal conversion device and cabinet for nuclear power plant

Abstract

The utility model discloses an embodiment provides a kind of voltage signal conversion device and cabinet of nuclear power plant, which includes resistance piece and two conducting pieces, two conducting pieces are arranged side by side, resistance piece is connected between two conducting pieces, the end of two conducting pieces is used to connect external lead, and one end of two conducting pieces is used to receive input current signal, and the other end of two conducting pieces is used to output converted voltage signal.The voltage signal conversion device of the embodiment is simple in structure, easy to develop, and can effectively convert current signal to voltage signal.Compared with traditional conversion device, it reduces interference in the signal transmission process, improves the stability and accuracy of signal conversion.

Description

Technical Field

[0001] This utility model relates to the field of signal processing technology in nuclear power plants, and in particular to a voltage signal conversion device and cabinet for nuclear power plants. Background Technology

[0002] In the design of operating nuclear power plants, standard 4~20mA current signals or 1~5V voltage signals are typically used for signal transmission. Therefore, devices that generate standard 4~20mA current signals or 1~5V voltage signals are the most widely used. However, in some application scenarios, it is also necessary to transmit special voltage signals (such as 0.1~0.5V, 0.2~1V, etc.) to application terminals (such as display instruments, recorders, etc.).

[0003] To achieve the transmission of these special voltage signals, nuclear power plants typically develop specialized devices to generate these special signals directly. However, due to the different voltage signal ranges, a separate specialized device needs to be developed for each voltage signal range used, which makes development difficult and costly. Utility Model Content

[0004] This utility model provides a voltage signal conversion device and cabinet for nuclear power plants, aiming to solve the problem of high development difficulty of existing voltage signal conversion devices.

[0005] This utility model provides a voltage signal conversion device for a nuclear power plant, including a resistor and two conductive elements. The two conductive elements are arranged side by side, and the resistor is connected between the two conductive elements. The ends of the two conductive elements are used to connect external wires, and one end of the two conductive elements is used to receive an input current signal, while the other end of the two conductive elements is used to output a converted voltage signal.

[0006] Specifically, the resistance value of the resistive element is 25Ω~50Ω.

[0007] Specifically, it also includes a fastening assembly disposed at the ends of the two conductive elements for pressing the external wire.

[0008] Specifically, the fastening assembly includes a wire fastener and a fastening screw. The wire fastener has a threaded hole, through which the external wire is connected to the conductive component. The fastening screw is screwed into the threaded hole.

[0009] Specifically, the voltage signal conversion device further includes a housing, the housing having an installation space inside, and the resistor, the conductor, and the fastening assembly are all installed in the installation space.

[0010] Specifically, the installation space includes two installation areas at different heights, and the two conductive elements are respectively installed in one of the installation areas.

[0011] Specifically, the two conductive elements have different lengths.

[0012] Specifically, the outer side of the housing is provided with a slot for engaging the guide rail.

[0013] This utility model embodiment also provides a cabinet, including the voltage signal conversion device as described above.

[0014] Specifically, the cabinet also includes a controller and an analog output module connected in sequence. The controller is used to control the analog output module to generate a current signal and input it into the voltage signal conversion device. The current signal is a 4~20mA signal.

[0015] This utility model provides a voltage signal conversion device and cabinet for a nuclear power plant. The voltage signal conversion device includes a resistor and two conductive elements arranged side-by-side. The resistor is connected between the two conductive elements. The ends of the two conductive elements are used to connect external wires. One end of each conductive element receives an input current signal, and the other end outputs the converted voltage signal. This embodiment of the voltage signal conversion device has a simple structure, is easy to develop, and can effectively convert current signals to voltage signals. Compared with traditional conversion devices, it reduces interference during signal transmission and improves the stability and accuracy of signal conversion. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a voltage signal conversion device for a nuclear power plant provided for an embodiment of this utility model; Figure 2 This is a schematic diagram of the wire fastener structure; Figure 3 This is a schematic diagram illustrating the application principle of a cabinet provided in an embodiment of the present utility model.

[0018] Explanation of the markings in the image: 1. Voltage signal conversion device; 11. Resistor; 12. Conductor; 121. First conductor; 122. Second conductor; 13. Fastening assembly; 131. Wire fastener; 1311. Threaded hole; 132. Fastening screw; 14. Housing; 15. Mounting space; 151. First mounting area; 152. Second mounting area; 16. Slot; 2. Cabinet; 21. Controller; 22. Analog output module. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0021] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0022] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0023] Please see Figure 1 This utility model provides a voltage signal conversion device 1 for a nuclear power plant, including a resistor 11 and two conductors 12. The two conductors 12 are arranged in parallel, the resistor 11 is connected between the two conductors 12, the ends of the two conductors 12 are used to connect external wires, one end of the two conductors 12 is used to receive the input current signal, and the other end of the two conductors 12 is used to output the converted voltage signal.

[0024] The design principle of this embodiment is based on Ohm's law, R=U / I, where U is voltage, I is current, and R is resistance. When current flows through a resistor, a voltage drop is generated across the resistor, thereby converting the input current signal into a voltage signal output. In specific implementation, the external device transmits the current signal to one end of the two conducting elements 12 through an external wire. This generates a voltage change through the resistor 11, and the converted voltage signal is output from the other end of the two conducting elements 12. By changing the resistance value of the resistor 11, the desired voltage signal can be obtained. This embodiment sets the two conducting elements 12 in parallel, providing a stable path for the transmission and conversion of the current signal. The voltage signal conversion device 1 in this embodiment has a simple and compact structure, effectively realizing the conversion of current signals to voltage signals. Compared with traditional conversion devices, it reduces interference during signal transmission and improves the stability and accuracy of signal conversion.

[0025] In practice, Figure 1 The current signal input terminal and voltage signal output terminal are the connection terminals for the external wires. To connect the resistor 11 and the two conductive elements 12, a welding method can be used. The resistor 11 can be a high-precision, low-temperature-coefficient resistor (also called a precision resistor) to ensure the stability of its resistance value under different ambient temperatures, thereby improving the accuracy of signal conversion. The conductive elements 12 can be made of copper or aluminum, which have good conductivity, to reduce losses during signal transmission. In other implementation scenarios, the resistor 11 can also be composed of multiple resistors connected in series or parallel to meet the required resistance value.

[0026] Specifically, the resistance of resistor 11 is 25Ω~50Ω.

[0027] In this embodiment, the resistance value of resistor 11 can be precisely selected within the range of the actual current signal used and the required voltage signal accuracy. For example, if the current signal is 4-20mA and a voltage signal of 0.1-0.5V is required, a resistor 11 with a resistance value of 25Ω can be selected; if a voltage signal of 0.2-1V is required, a resistor 11 with a resistance value of 50Ω can be selected. By setting the resistance value of resistor 11 within the range of 25Ω to 50Ω, this embodiment can better match the conversion requirements of common current signals in nuclear power plants, ensuring the output accuracy and stability of the voltage signal.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, the voltage signal conversion device 1 also includes a fastening component 13, which is disposed at the ends of the two conductive parts 12 and is used to clamp the external wires.

[0029] In this embodiment, to ensure a reliable connection between the external wire and the conductor 12 and to avoid signal transmission instability or interruption due to loose external wires, external force is applied to the fastening assembly 13 to ensure tight contact between the external wire and the conductor 12, thus achieving good signal transmission. During implementation, when connecting the external wire, the fastening assembly 13 firmly presses the wire against the end of the conductor 12, forming a good electrical connection between the wire and the conductor 12. Compared to traditional wire connection methods, this fastening assembly 13 effectively prevents wire loosening, ensures signal transmission stability, reduces signal errors caused by contact problems, and improves the reliability and stability of the connection.

[0030] Specifically, such as Figure 1 and Figure 2 As shown, the fastening assembly 13 includes a wire fastener 131 and a fastening screw 132. The wire fastener 131 is provided with a threaded hole 1311. An external wire is connected to the conductor 12 through the threaded hole 1311. The fastening screw 132 is screwed into the threaded hole 1311.

[0031] In this embodiment, utilizing the self-locking principle of the threaded hole 1311, the wire fastener 131 applies pressure to the wire by tightening the fastening screw 132, thereby securing the wire. Specifically, the external wire is inserted into the threaded hole 1311 of the wire fastener 131, and then the fastening screw 132 is screwed in. As the screw is screwed in, the wire fastener 131 gradually presses against the external wire, ensuring a tight connection between the external wire and the conductive component 12. This fastening assembly 13 is easy to operate, and the tightening force can be adjusted according to specific needs, facilitating the installation and removal of the external wire.

[0032] In practical implementation, the wire fastener 131 can be made of engineering plastic with good insulation properties to prevent leakage, and the fastening screw 132 can be made of stainless steel with good rust resistance to adapt to the complex working environment of nuclear power plants. Standard screws can also be selected for easy procurement and replacement. In other implementation scenarios, a combination of bolts and nuts can be used instead of fastening screw 132.

[0033] Specifically, such as Figure 1 As shown, the voltage signal conversion device 1 also includes a housing 14, which has an installation space 15 inside. The resistor 11, the conductor 12, and the fastening assembly 13 are all installed in the installation space 15.

[0034] In this embodiment, in order to prevent external factors (such as dust, moisture, mechanical collisions, etc.) from damaging the resistor 11, conductor 12 and fastening assembly 13, an additional housing 14 is provided, and the resistor 11, conductor 12 and fastening assembly 13 are installed in the installation space 15 of the housing 14. Through the closed structure of the housing 14, the internal components are isolated from the external environment, which improves the operational reliability and service life of the entire device, reduces the failure rate caused by external factors, and also makes the device look cleaner and more beautiful.

[0035] In practical implementation, the housing 14 can be made of high-strength plastic or metal, such as ABS plastic or aluminum alloy. Plastic housing 14 has the advantages of being lightweight and low-cost, while metal housing 14 offers better protection and heat dissipation. In other implementation scenarios, a housing 14 made of a combination of materials can also be used, such as a metal outer shell and a plastic inner liner, to balance protection and cost.

[0036] Specifically, the installation space 15 includes two installation areas at different heights, with two conductive elements 12 installed in one of the installation areas respectively.

[0037] In this embodiment, to optimize the internal spatial layout of the housing 14 and avoid mutual interference between the two conductive elements 12, the interior of the housing 14 is divided into two mounting areas with different heights. These two mounting areas are arranged side-by-side within the housing 14. For ease of explanation, the two mounting areas are designated as a first mounting area 151 and a second mounting area 152. Similarly, the two conductive elements 12 are designated as a first conductive element 121 and a second conductive element 122. The first conductive element 121 is installed in the first mounting area 151, and the second conductive element 122 is installed in the second mounting area 152. This utilizes the height difference to separate the two conductive elements 12, reducing the impact of electromagnetic coupling and other interference factors on signal transmission. During operation, the two conductive elements 12 stably transmit signals within their respective independent mounting areas without interfering with each other, thus improving the stability and accuracy of signal transmission.

[0038] Specifically, such as Figure 1 As shown, the two conductive elements 12 have different lengths.

[0039] In this embodiment, in order to facilitate wiring arrangement, according to the internal layout of the housing 14 and the requirements for external wire connection, the lengths of the two conductive elements 12 are set to be different. During operation, the conductive elements 12 of different lengths work together to enable the current to pass through the resistor element 11 more smoothly to complete the signal conversion, thereby reducing energy loss and interference during signal transmission.

[0040] In practical implementation, fastening components 13 are installed at both ends of the conductors 12. To make the internal space of the housing 14 more compact, the fastening components 13 at both ends abut against the edge of the housing 14. More specifically, taking the first mounting area 151 as an example, the wire fasteners 131 at both ends are located on both sides of the first mounting area 151. That is to say, the length of the two conductors 12 determines the length of the two mounting areas. In this embodiment, the length of the first conductor 121 is less than the length of the second conductor 122. Of course, if the first conductor 121 needs to connect to a component that is farther away, its length can be appropriately increased, and its length can be greater than the length of the second conductor 122. At the same time, the length of the corresponding mounting area inside the housing 14 is increased.

[0041] In other embodiments, conductors 12 with different cross-sectional areas can be used. For example, the first conductor 121 has a first cross-sectional area, and the second conductor 122 has a second cross-sectional area. The second cross-sectional area is larger than the first cross-sectional area. Depending on the application scenario, the first cross-sectional area can also be larger than the second cross-sectional area. In this embodiment, the signal transmission performance is optimized by setting conductors 12 with different cross-sectional areas.

[0042] Specifically, such as Figure 1 As shown, the outer side of the housing 14 is provided with a slot 16 for engaging the guide rail.

[0043] In this embodiment, a slot 16 for engaging the guide rail is provided on the outside of the housing 14, allowing the voltage signal conversion device 1 to be easily installed on the guide rail of the cabinet 2 or other equipment, enabling quick installation and disassembly, and improving the versatility and adaptability of the entire device. When installing the entire device, align the slot 16 on the housing 14 with the guide rail and gently push it in to lock the slot 16 into place, thus completing the installation. For disassembly, simply push the device in the opposite direction to separate the slot 16 from the guide rail.

[0044] In practical implementation, the size and shape of the slot 16 can be designed according to common guide rail standards to ensure good compatibility. Alternatively, a magnetic installation structure can be adopted, using magnetic force to fix the entire device to the guide rail mounting surface. Elastic buckles can also be set in the slot 16 to enhance the connection between the slot 16 and the guide rail.

[0045] like Figure 3 As shown, this embodiment of the utility model also provides a cabinet 2, which includes the voltage signal conversion device 1 as described above.

[0046] In this embodiment, the cabinet 2 integrates a voltage signal conversion device 1, enabling effective processing of nuclear power plant current signals and facilitating connection and collaborative operation with other electrical equipment. In practical implementation, the voltage signal conversion device 1 within the cabinet 2 receives current signals from external devices, converts them, and outputs voltage signals for use by application terminals. The cabinet 2 can be internally laid out according to the size and interface requirements of the voltage signal conversion device 1, rationally arranging wiring and installation space 15; alternatively, a modular design can be adopted to facilitate the expansion and replacement of equipment within the cabinet 2.

[0047] Specifically, such as Figure 3 As shown, the cabinet 2 also includes a controller 21 and an analog output module 22 connected in sequence. The controller 21 is used to control the analog output module 22 to generate a current signal and input it into the voltage signal conversion device 1. The current signal is a 4~20mA signal.

[0048] In this embodiment, the controller 21 sends control commands to the analog output module 22 according to a preset program and parameters. The analog output module 22 generates a current signal according to the commands and inputs this current signal into the voltage signal conversion device 1. After conversion, the required voltage signal is output. Since the current signal used in nuclear power plants is usually a standard 4~20mA signal, the controller 21 only needs to control the analog output module 22 to generate a 4~20mA signal. Then, the resistance value of the resistor 11 is adjusted according to the voltage signal required by the application terminal. In this embodiment, through the cooperation of the controller 21 and the analog output module 22, the generated current signal can be precisely controlled to provide a stable input signal to the voltage signal conversion device 1, ensuring the accuracy of signal conversion. The application terminal can be a display instrument, recorder, etc.

[0049] In practical implementation, the controller 21 can be a programmable logic controller 21 (PLC) or a microcontroller, which has high control accuracy and flexibility. The analog output module 22 can be a module with high-precision output function to ensure the output accuracy of the current signal. Of course, other types of controllers 21 and analog output modules 22 can also be used, as long as their performance meets the application requirements of nuclear power plants.

[0050] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A voltage signal conversion device for a nuclear power plant, characterized in that, It includes a resistor and two conductive elements, the two conductive elements are arranged side by side, the resistor is connected between the two conductive elements, the ends of the two conductive elements are used to connect external wires, one end of the two conductive elements is used to receive the input current signal, and the other end of the two conductive elements is used to output the converted voltage signal.

2. The voltage signal conversion device according to claim 1, characterized in that, The resistance of the resistor is 25Ω~50Ω.

3. The voltage signal conversion device according to claim 1, characterized in that, It also includes a fastening assembly disposed at the ends of the two conductive elements for clamping the external wire.

4. The voltage signal conversion device according to claim 3, characterized in that, The fastening assembly includes a wire fastener and a fastening screw. The wire fastener has a threaded hole, through which the external wire is connected to the conductive component. The fastening screw is screwed into the threaded hole.

5. The voltage signal conversion device according to claim 4, characterized in that, It also includes a housing, the housing having an internal mounting space in which the resistor, the conductor, and the fastening assembly are all mounted.

6. The voltage signal conversion device according to claim 5, characterized in that, The installation space includes two installation areas at different heights, and the two conductive elements are respectively installed in one of the installation areas.

7. The voltage signal conversion device according to claim 6, characterized in that, The two conductive elements have different lengths.

8. The voltage signal conversion device according to claim 5, characterized in that, The outer side of the housing is provided with a slot for engaging the guide rail.

9. A server rack, characterized in that, Includes the voltage signal conversion device as described in any one of claims 1-8.

10. The cabinet according to claim 9, characterized in that, It also includes a controller and an analog output module connected in sequence. The controller is used to control the analog output module to generate a current signal and input it into the voltage signal conversion device. The current signal is a 4~20mA signal.

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