Variable load type rod position detector simulation equipment

Abstract

The invention belongs to the field of nuclear power stations, and particularly relates to variable load type rod position detector simulation equipment which comprises a resistance sensing module, a signal generator module and a control module. The resistance-inductance module is used for simulating the resistance-inductance characteristic of the rod position detector, adjusting the resistance value according to the resistance-inductance characteristic of the rod position detector, and outputting the resistance value to the control module; the signal generator module is used for receiving the rod position measurement signal in a digital quantity form, converting the rod position measurement signal in the digital quantity form into a rod position measurement voltage signal in an analog quantity form, and outputting the rod position measurement voltage signal to the value control module; and the control module is used for performing signal generation control on the rod position measurement signal in the digital quantity form, and receiving, processing and analyzing the resistance value of the resistor and the rod position measurement voltage signal in the analog quantity form. The simulation equipment is consistent with a real load in electrical parameters, and can simulate a rod position measurement feedback signal, so that the applicability of the simulation load is greatly improved, and the test cost is effectively reduced.

Description

Technical Field

[0001] The invention belongs to the field of nuclear power plants, and in particular relates to a variable load type rod position detector simulation device. Background Art

[0002] During the development and supply phase of the rod position measurement system equipment in nuclear power plants, it is necessary to cooperate with the rod position detector to complete functional performance tests. The test conditions of the real rod position detector are complex and the cost is extremely high, which makes it difficult to meet the test requirements of the rod position measurement system equipment. In order to facilitate the functional performance tests of the rod position measurement equipment, it is necessary to use the rod position detector simulated load to replace the real rod position detector to carry out the joint debugging test.

[0003] The traditional rod position detector simulation load uses a resistive simulation load, which has the following shortcomings: the resistance cannot be continuously adjusted, and it is difficult to accurately simulate the resistance value of the rod position detector coil; it is impossible to simulate the rod position feedback signal collected by the rod position detector measurement coil, and it is impossible to verify the rod position signal processing function performance in the measuring equipment; the heat dissipation performance is poor and it cannot be used for a long time. Summary of the invention

[0004] The purpose of the present invention is to provide a variable load rod position detector simulation device, which is not only consistent with the actual load in electrical parameters, but also can simulate the rod position measurement feedback signal, greatly improve the applicability of the simulated load, and effectively reduce the test cost.

[0005] The technical solution to achieve the purpose of the present invention is:

[0006] A variable load rod position detector simulation device, the simulation device includes a resistance-sensing module, a signal generator module, and a control module; the resistance-sensing module is used to simulate the resistance-sensing characteristics of the rod position detector, adjust the resistance value according to the resistance-sensing characteristics of the rod position detector, and output the resistance value to the control module; the signal generator module is used to receive a rod position measurement signal in a digital form, convert the digital rod position measurement signal into an analog rod position measurement voltage signal, and output the value to the control module; the control module is used to perform signal generation control on the digital rod position measurement signal, receive and process and analyze the resistance value and the analog rod position measurement voltage signal.

[0007] The resistance-sensing module shown includes an adjustable resistor, a fixed resistor, an inductor and a controllable switch. The adjustable resistor is connected in parallel with the controllable switch and then connected in series with the fixed resistor and the inductor. The turning on or off of the controllable switch determines the input or output of the adjustable resistor to adjust the total resistance value of the resistance-sensing module to match the resistance value of different types of rod position detectors.

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

[0009] The simulation device includes a plurality of resistance-sensing modules for simulating the resistance-sensing characteristics of a plurality of rod position detectors.

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

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

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

[0013] The simulation device also includes an on-site 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 vent, a device power supply interface and switch, and a simulated load output interface; the device status indicator light, the adjustable resistance switch, the device parameter indication interface, the rod position transmission interface, the device program download interface, the variable resistance adjustment knob, the vent, the device power supply interface and switch, and the simulated load output interface are arranged on the device housing; the device status indicator light is connected to the alarm and status display module to indicate the normal, working and fault status of the device; the adjustable resistance switch and the adjustable The resistor connection is used to control the input or output of the adjustable resistor; the device parameter indication interface is connected to the local display module to display the key parameters of the device; the rod position transmission interface is used to receive the rod position measurement signal in the form of digital quantity transmitted by the PC control module; the device program download interface is used to simulate the internal program update and download of the load; the variable resistor adjustment knob is connected to the adjustable resistor to adjust the resistance value of the adjustable resistor; the device housing is used to load various functional modules and interfaces; the vent is used for ventilation and heat dissipation of the device; the device power supply interface and switch are used for device power supply and power-on control; the simulated load output interface is used to simulate the external output of the detector.

[0016] The beneficial technical effects of the present invention are:

[0017] 1. The present invention provides a variable load rod position detector simulation device, which adjusts the simulated load (i.e., resistance-sensing module) parameters according to the different cold and hot state parameters of the detector, so that the simulated load and the detector electrical parameters are relatively consistent; at the same time, it can simulate the detector measurement coil feedback signal, 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, in which the adjustable resistor in the simulated load (i.e., the resistance-sensing 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, and rod position detectors with different electrical parameters can be simulated, and the heat dissipation performance is excellent.

[0019] 3. The present invention provides a variable load rod position detector simulation device, in which the signal generator module has a multi-channel signal output capability to replace the signal feedback of the real rod position detector, and can effectively verify the functional 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 the rod position system equipment, it greatly reduces the test cost. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0025] In the figure: 1-device status indicator light, 2-adjustable resistance switch, 3-device parameter indication interface, 4-rod position transmission interface, 5-device program download interface, 6-variable resistance adjustment knob, 7-device housing, 8-ventilation port, 9-device power supply interface and switch, 10-simulated load output interface. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figure 1 As shown, a variable load rod position detector simulation device provided by the present invention includes a resistance-sensing module, a signal generator module, and a control module; the resistance-sensing module is used to simulate the resistance-sensing characteristics of the rod position detector, adjust the resistance value according to the resistance-sensing 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 (that is, the voltage analog quantity output by the actual rod position detector), and output the value to the control module; the control module is used to perform signal generation control on the rod position measurement signal in digital form, receive and process and analyze the resistance value and the rod position measurement voltage signal in analog form.

[0028] like Figure 1 As shown, a variable load rod position detector simulation device provided by the present invention also includes a communication module, which is used to control the module program download and update, the resistance value and the transmission of the rod position measurement voltage signal in analog form, and the resistance-sensing module and the signal generator module are respectively connected to the control module through the communication module.

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

[0030] like Figure 1 As shown, a variable load type rod position detector simulation device provided by the present invention also includes an on-site display module for displaying key parameters of the simulation device.

[0031] like Figure 1 As shown, a variable load type 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 resistance-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 turning on or off of the controllable switch S determines the input or removal of the adjustable resistor R1 to adjust the total resistance value of the resistance-sensing module to match the resistance value of different types of rod position detectors.

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

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

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

[0036] In another specific embodiment, a 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 is adjustable to simulate the output of the rod position measurement signal under different moving rod speeds of the control rod.

[0038] like Figure 4 As shown, a variable load rod position detector simulation device provided by the present invention includes: 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 vent 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 vent 8, the device power supply interface and switch 9, and the simulated load output interface 10 are arranged on the device housing 7.

[0039] 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 adjustable resistance switch 2 is connected to the adjustable resistor R1 to control the input or removal of the adjustable resistor; the device parameter indication interface 3 is connected to the local display module to display the key parameters of the device; the rod position transmission interface 4 is used to receive the rod position measurement signal in the form of digital quantity transmitted by the PC control module; the device program download interface 5 is used to simulate the internal program update and download of the 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 device housing 7 is used to load various functional modules and interfaces; the vent 8 is used for ventilation and heat dissipation of the device; the device power supply interface and switch 9 are used for equipment power supply and power-on control; the simulated load output interface 10 is used to simulate the external output of the detector.

[0040] The rod position detector simulation device designed based on the present invention has been used in conjunction with the rod position equipment of Zhangzhou Nuclear Power Units 1 and 2 to complete functional performance tests. The results show that the simulation device can fully verify the rod position measurement system equipment and has good applicability. It also greatly reduces the test cost of the rod position equipment and has great application value.

[0041] The present invention is described in detail above with reference to the accompanying drawings and embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. The contents not described in detail in the present invention can adopt the existing technology.

Claims

1. A variable load type rod position detector simulation device, characterized in that: The simulation device includes a resistance-sensing module, a signal generator module, and a control module; the resistance-sensing module is used to simulate the resistance-sensing characteristics of the rod position detector, adjust the resistance value according to the resistance-sensing 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, 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 and analyze the resistance value and the analog rod position measurement voltage signal.

2. A variable load type rod position detector simulation device according to claim 1, characterized in that: The resistance-sensing module shown 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 turning on or off of the controllable switch (S) determines the input or removal of the adjustable resistor (R1) to adjust the total resistance value of the resistance-sensing module to match the resistance value of different types of rod position detectors.

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

4. The variable load type rod position detector simulation device according to claim 1, characterized in that: The simulation device includes a plurality of resistance-sensing modules for simulating the resistance-sensing characteristics of a plurality of rod position detectors.

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

6. The variable load type rod position detector simulation device according to claim 1, characterized in that: The rod position measurement signal speed generated by the control module is adjustable, and is used to simulate the rod position measurement signal output under different moving rod speeds of the control rod.

7. The variable load type 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 resistance-sensing module is connected to the control module through the interface module and the communication module; and the signal generator module is connected to the control module through the interface module and the communication module.

8. The variable load type rod position detector simulation device according to claim 1, characterized in that: The simulation device also includes an on-site display module for displaying key parameters of the simulation device.

9. The variable load type rod position detector simulation device according to claim 1, characterized in that: The simulation device also includes an alarm and status display module, which is used to display the device status and alarm status.

10. A variable load type rod position detector simulation device according to any one of claims 1 to 9, characterized in that: The simulation device comprises: 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 vent (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 vent (8), the device power supply interface and switch (9), and the simulated load output interface (10) are arranged on the device housing (7); the device status indicator light (1) is connected to the alarm and status display module and is used to indicate the normal, working and fault conditions of the device. state; an adjustable resistance switch (2) connected to the adjustable resistance (R1) for controlling the input or removal of the adjustable resistance; an equipment parameter indication interface (3) connected to the local display module for displaying key equipment parameters; a rod position transmission interface (4) for receiving a rod position measurement signal in the form of a digital quantity transmitted by a PC control module; an equipment program download interface (5) for simulating the internal program update and download of a load; a variable resistance adjustment knob (6) connected to the adjustable resistance (R1) for adjusting the resistance value of the adjustable resistance (R1); an equipment housing (7) for loading various functional modules and interfaces; a vent (8) for ventilation and heat dissipation of the equipment; an equipment power supply interface and switch (9) for equipment power supply and power-on control; and an analog load output interface (10) for simulating the external output of the detector.

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