A variable load rod position detector simulation device

Abstract

This invention pertains to the field of nuclear power plants, specifically relating to a variable load rod position detector simulation device. The device includes an inductance module, a signal generator module, and a control module. The inductance module simulates the inductance characteristics of the rod position detector, adjusting the resistance value according to these characteristics and outputting the resistance value to the control module. The signal generator module receives digital rod position measurement signals, converts them into analog rod position measurement voltage signals, and outputs the value to the control module. The control module controls the generation of the digital rod position measurement signals, receives, processes, and analyzes the resistance value and the analog rod position measurement voltage signals. This simulation device not only closely matches the electrical parameters of a real load but also simulates rod position measurement feedback signals, greatly improving the applicability of the simulated load and effectively reducing testing costs.

Description

Technical Field

[0001] This invention belongs to the field of nuclear power plants, and specifically relates to a variable load rod position detector simulation device. Background Technology

[0002] During the research and development and supply phases of the rod position measurement system equipment in nuclear power plants, it is necessary to conduct functional and performance tests in conjunction with rod position detectors. The testing conditions for actual rod position detectors are complex and extremely costly, making them unsuitable for the testing requirements of the rod position measurement system equipment. To facilitate functional and performance tests on the rod position measurement equipment, it is necessary to use rod position detectors to simulate loads and conduct joint commissioning tests in place of actual rod position detectors.

[0003] Traditional rod position detectors use resistive loads for simulation, which have the following drawbacks: the resistance cannot be continuously adjusted, making it difficult to accurately simulate the resistance value of the rod position detector coil; it cannot simulate the rod position feedback signal collected by the rod position detector measurement coil, making it impossible to verify the performance of the rod position signal processing function in the measuring equipment; and it has poor heat dissipation performance, making it unsuitable for long-term use. Summary of the Invention

[0004] The purpose of this invention is to provide a variable load rod position detector simulation device. This device not only has electrical parameters that are consistent with the real load, but also can simulate rod position measurement feedback signals, which greatly improves the applicability of the simulated load and effectively reduces the test cost.

[0005] Technical solution to achieve the purpose of this invention:

[0006] A variable load rod position detector simulation device includes a resistance-inductance module, a signal generator module, and a control module. The resistance-inductance module simulates the resistance-inductance characteristics of the rod position detector, adjusts the resistance value according to the resistance-inductance characteristics of the rod position detector, and outputs the resistance value to the control module. The signal generator module receives the rod position measurement signal in digital form, converts the digital rod position measurement signal into an analog rod position measurement voltage signal, and outputs the value to the control module. The control module controls the signal generation of the digital rod position measurement signal, receives and processes the resistance value and the analog rod position measurement voltage signal.

[0007] The resistive sensing module shown includes an adjustable resistor, a fixed resistor, an inductor, and a controllable switch. The adjustable resistor and the controllable switch are connected in parallel, and then connected in series with the fixed resistor and the inductor. The switching on or off of the controllable switch determines whether the adjustable resistor is engaged or disengaged, thereby adjusting the total resistance value of the resistive sensing module to match the resistance values ​​of different types of rod position detectors.

[0008] The adjustable resistor includes a resistive layer, an insulating layer, and a heat sink. The insulating layer is located between the resistive layer and the heat sink. The resistive layer is in the form of a thin film and is laid on the insulating layer. The insulating layer is then attached to the heat sink. By adjusting the position of the external connection point on the resistive layer, its resistance value can be continuously adjusted to match the resistance values ​​of different types of rod position detectors.

[0009] The simulation device includes multiple resistive inductance modules, used to simulate the resistive inductance characteristics of multiple rod-type detectors.

[0010] The simulation device includes multiple signal generator modules for simulating the rod position measurement signal output function of multiple rod position detectors.

[0011] The speed of the rod position measurement signal generated by the control module is adjustable, and it is used to simulate the output of the rod position measurement signal under different moving rod speeds.

[0012] The simulation device also includes an interface module and a communication module. The impedance module is connected to the control module through the interface module and the communication module; the signal generator module is connected to the control module through the interface module and the communication module.

[0013] The simulation device also includes a local display module for displaying key parameters of the simulation device.

[0014] The simulation device also includes an alarm and status display module for displaying device status and alarm status.

[0015] The simulation device includes: a device status indicator light, an adjustable resistance switch, a device parameter indication interface, a rod position transmission interface, a device program download interface, a variable resistance adjustment knob, a device housing, a ventilation opening, a device power supply interface and switch, and a simulated load output interface; the device status indicator light, adjustable resistance switch, device parameter indication interface, rod position transmission interface, device program download interface, variable resistance adjustment knob, ventilation opening, device power supply interface and switch, and simulated load output interface are located on the device housing; the device status indicator light is connected to an alarm and status display module to indicate the normal, working, and fault states of the device; the adjustable resistance switch and adjustable... The system includes: a resistor connection for controlling the connection or disconnection of the adjustable resistor; a device parameter indicator interface connected to the local display module for displaying key device parameters; a rod position transmission interface for receiving digital rod position measurement signals transmitted from the PC control module; a device program download interface for updating and downloading internal programs for the simulated load; a variable resistance adjustment knob connected to the adjustable resistor for adjusting its resistance value; a device housing for housing various functional modules and interfaces; ventilation openings for ventilation and heat dissipation; a device power supply interface and switch for power supply and control; and a simulated load output interface for simulating the detector's output.

[0016] The beneficial technical effects of this invention are as follows:

[0017] 1. The present invention provides a variable load rod position detector simulation device, which adjusts the parameters of the simulation load (i.e., the resistive inductor module) according to the different cold and hot state parameters of the detector, so that the electrical parameters of the simulation load and the detector are more consistent; at the same time, it can simulate the feedback signal of the detector measurement coil, and can verify the functional performance of the rod position measurement device.

[0018] 2. The present invention provides a variable load rod position detector simulation device. The adjustable resistor in the simulated load (i.e., the inductive module) adopts a design in which a metal resistor layer is laid on a heat sink. The resistance value of the metal resistor layer is continuously adjustable, which can simulate rod position detectors with different electrical parameters, and has excellent heat dissipation performance.

[0019] 3. The present invention provides a variable load rod position detector simulation device, the signal generator module of which has the ability to output multiple signals to replace the signal feedback of the real rod position detector, and can effectively verify the function and performance of the rod position measurement device.

[0020] 4. The variable load rod position detector simulation device provided by the present invention has the advantages of adjustable load, good heat dissipation performance and strong applicability. While meeting the test requirements of rod position system equipment, it greatly reduces the test cost. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the functional modules of a variable load rod position detector simulation device provided by the present invention;

[0022] Figure 2 A schematic diagram of the resistive inductor module in a variable load rod position detector simulation device provided by the present invention;

[0023] Figure 3 A schematic diagram of an adjustable resistor in a variable load rod position detector simulation device provided by the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a variable load rod position detector simulation device provided by the present invention.

[0025] In the diagram: 1-Equipment status indicator light, 2-Adjustable resistor switch, 3-Equipment parameter indicator interface, 4-Stick position transmission interface, 5-Equipment program download interface, 6-Variable resistor adjustment knob, 7-Equipment housing, 8-Ventilation port, 9-Equipment power supply interface and switch, 10-Analog load output interface. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0027] like Figure 1 As shown, the present invention provides a variable load rod position detector simulation device, including a resistance inductance module, a signal generator module, and a control module. The resistance inductance module is used to simulate the resistance characteristics of the rod position detector, adjust the resistance value according to the resistance characteristics of the rod position detector, and output the resistance value to the control module. The signal generator module is used to receive the rod position measurement signal in digital form, convert the digital rod position measurement signal into an analog rod position measurement voltage signal (i.e., the analog voltage output by the actual rod position detector), and output the value to the control module. The control module is used to control the signal generation of the digital rod position measurement signal, receive and process the resistance value and the analog rod position measurement voltage signal.

[0028] like Figure 1 As shown, the variable load rod position detector simulation device provided by the present invention also includes a communication module. The communication module is used for downloading and updating the control module program, transmitting the resistance value and the rod position measurement voltage signal in analog form. The resistance inductance module and the signal generator module are respectively connected to the control module through the communication module.

[0029] like Figure 1 As shown, the variable load rod position detector simulation device provided by the present invention also includes an interface module. The interface module is used to provide an interface for the input and output of the simulation device. The impedance module and the signal generator module are respectively connected to the communication module through the interface module.

[0030] like Figure 1 As shown, the present invention provides a variable load rod position detector simulation device, which also includes a local display module for displaying key parameters of the simulation device.

[0031] like Figure 1 As shown, the variable load rod position detector simulation device provided by the present invention also includes an alarm and status display module for displaying the device status and alarm status.

[0032] like Figure 2 As shown, the resistive sensing module includes an adjustable resistor R1, a fixed resistor R2, an inductor L, and a controllable switch S. The adjustable resistor R1 is connected in parallel with the controllable switch S, and then connected in series with the fixed resistor R2 and the inductor L. The switching on or off of the controllable switch S determines whether the adjustable resistor R1 is engaged or disengaged, thereby adjusting the total resistance value of the resistive sensing module to match the resistance values ​​of different types of rod position detectors.

[0033] like Figure 3As shown, the adjustable resistor R1 includes a resistive layer, an insulating layer, and a heat sink. The insulating layer is located between the resistive layer and the heat sink. The resistive layer is thin-film and laid on the insulating layer. The insulating layer is then attached to the heat sink. By adjusting the position of the external connection point on the resistive layer, its resistance value can be continuously adjusted to match the resistance values ​​of different types of rod position detectors, and it has excellent heat dissipation performance.

[0034] In one specific embodiment, the resistive layer is a conductive metal resistive layer.

[0035] In another specific embodiment, the variable load rod position detector simulation device provided by the present invention includes multiple resistance and inductance modules for simulating the resistance and inductance characteristics of multiple rod position detectors.

[0036] In another specific embodiment, the variable load rod position detector simulation device provided by the present invention includes multiple signal generator modules for simulating the rod position measurement signal output function of multiple rod position detectors.

[0037] In another specific embodiment, the speed of the rod position measurement signal generated by the control module can be adjusted to simulate the output of the rod position measurement signal under different moving rod speeds.

[0038] like Figure 4 As shown, the present invention provides a variable load type rod position detector simulation device, comprising: a device status indicator light 1, an adjustable resistance switch 2, a device parameter indication interface 3, a rod position transmission interface 4, a device program download interface 5, a variable resistance adjustment knob 6, a device housing 7, a ventilation port 8, a device power supply interface and switch 9, and a simulated load output interface 10; the device status indicator light 1, the adjustable resistance switch 2, the device parameter indication interface 3, the rod position transmission interface 4, the device program download interface 5, the variable resistance adjustment knob 6, the ventilation port 8, the device power supply interface and switch 9, and the simulated load output interface 10 are disposed on the device housing 7.

[0039] The equipment status indicator light 1 is connected to the alarm and status display module to indicate the normal, working, and faulty status of the equipment; the adjustable resistor switch 2 is connected to the adjustable resistor R1 to control the connection or disconnection of the adjustable resistor; the equipment parameter indicator interface 3 is connected to the local display module to display key equipment parameters; the rod position transmission interface 4 is used to receive digital rod position measurement signals transmitted from the PC control module; the equipment program download interface 5 is used for updating and downloading internal programs of the simulated load; the variable resistance adjustment knob 6 is connected to the adjustable resistor R1 to adjust the resistance value of the adjustable resistor R1; the equipment housing 7 is used to house various functional modules and interfaces; the ventilation port 8 is used for equipment ventilation and heat dissipation; the equipment power supply interface and switch 9 are used for equipment power supply and power-on control; and the simulated load output interface 10 is used for the simulated detector to output externally.

[0040] The rod position detector simulation equipment designed based on this invention has been used in conjunction with the rod position equipment of Units 1 and 2 of Zhangzhou Nuclear Power Plant to complete functional performance tests. The results show that this simulation equipment can comprehensively verify the rod position measurement system equipment and has good applicability. Furthermore, it greatly reduces the testing cost of the rod position equipment and has significant application value.

[0041] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. All contents not described in detail in the present invention can be derived from existing technologies.

Claims

1. A variable load rod position detector simulation device, characterized in that, The simulation device includes an inductance module, a signal generator module, and a control module. The inductance module simulates the inductance characteristics of a rod position detector, adjusts the resistance value according to the inductance characteristics of the rod position detector, and outputs the resistance value to the control module. The signal generator module receives the digital rod position measurement signal, converts the digital rod position measurement signal into an analog rod position measurement voltage signal, and outputs it to the control module. The control module controls the generation of the digital rod position measurement signal, receives and processes the resistance value and the analog rod position measurement voltage signal. The resistive sensing module includes an adjustable resistor (R1), a fixed resistor (R2), an inductor (L), and a controllable switch (S). The adjustable resistor (R1) and the controllable switch (S) are connected in parallel, and then connected in series with the fixed resistor (R2) and the inductor (L). The switching on or off of the controllable switch (S) determines whether the adjustable resistor (R1) is engaged or disengaged, thereby adjusting the total resistance value of the resistive sensing module to match the resistance values ​​of different types of rod position detectors. The speed of the rod position measurement signal generated by the control module is adjustable, which is used to simulate the rod position measurement signal output under different moving rod speeds.

2. The variable load rod position detector simulation device according to claim 1, characterized in that, The adjustable resistor (R1) includes a resistive layer, an insulating layer, and a heat sink. The insulating layer is located between the resistive layer and the heat sink. The resistive layer is thin film and is laid on the insulating layer. The insulating layer is then attached to the heat sink. By adjusting the position of the external connection point on the resistive layer, its resistance value can be continuously adjusted to match the resistance values ​​of different types of rod position detectors.

3. The variable load rod position detector simulation device according to claim 1, characterized in that, The simulation device includes multiple resistive inductance modules, used to simulate the resistive inductance characteristics of multiple rod-type detectors.

4. The variable load rod position detector simulation device according to claim 1, characterized in that, The simulation device includes multiple signal generator modules for simulating the rod position measurement signal output function of multiple rod position detectors.

5. The variable load rod position detector simulation device according to claim 1, characterized in that, The simulation device also includes an interface module and a communication module. The impedance module is connected to the control module through the interface module and the communication module; the signal generator module is connected to the control module through the interface module and the communication module.

6. The variable load rod position detector simulation device according to claim 1, characterized in that, The simulation device also includes a local display module for displaying key parameters of the simulation device.

7. The variable load rod position detector simulation device according to claim 1, characterized in that, The simulation device also includes an alarm and status display module for displaying device status and alarm status.

8. A variable load rod position detector simulation device according to any one of claims 1-7, characterized in that, The simulation device includes: a device status indicator light (1), an adjustable resistor switch (2), a device parameter indicator interface (3), a rod position transmission interface (4), a device program download interface (5), a variable resistance adjustment knob (6), a device housing (7), a vent (8), a device power supply interface and switch (9), and a simulated load output interface (10); the device status indicator light (1), adjustable resistor switch (2), device parameter indicator interface (3), rod position transmission interface (4), device program download interface (5), variable resistance adjustment knob (6), vent (8), device power supply interface and switch (9), and simulated load output interface (10) are located on the device housing (7); the device status indicator light (1) is connected to the alarm and status display module to indicate the normal, working, and fault status of the device. The system consists of: a state; an adjustable resistor switch (2) connected to an adjustable resistor (R1) for controlling the input or output of the adjustable resistor; an equipment parameter indicator interface (3) connected to a local display module for displaying key equipment parameters; a rod position transmission interface (4) for receiving digital rod position measurement signals transmitted from the PC control module; an equipment program download interface (5) for updating and downloading internal programs of the simulated load; a variable resistance adjustment knob (6) connected to an adjustable resistor (R1) for adjusting the resistance value of the adjustable resistor (R1); an equipment housing (7) for housing various functional modules and interfaces; a ventilation port (8) for ventilation and heat dissipation of the equipment; an equipment power supply interface and switch (9) for power supply and power-on control of the equipment; and a simulated load output interface (10) for outputting the simulated detector to the outside.

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