CN214226527U - Rod position signal simulation device of nuclear power control rod - Google Patents

Abstract

The embodiment of the utility model discloses nuclear power control rod position signal analogue means. The rod position signal simulation device of the nuclear power control rod comprises a rod position simulation branch, the rod position simulation branch comprises a test switch and at least one resistor, and the resistance of the rod position simulation branch is changed by switching on or off the test switch; the method comprises the steps that a first rod position signal simulation group is arranged, and the first rod position signal simulation group comprises at least one rod position simulation branch; in the first rod position signal simulation group, all rod position simulation branches are connected in parallel, the first ends of the rod position simulation branches are connected with a power supply, and the second ends of the rod position simulation branches are connected with a first rod position signal interface; make first stick position signal simulation group can simulate the stick position signal of control rod, and then the data acquisition cabinet can be based on before dropping into usefulness the embodiment of the utility model provides a nuclear power control rod stick position signal simulation device carries out convenient experiment.

Description

Rod position signal simulation device of nuclear power control rod

Technical Field

The embodiment of the utility model provides a relate to nuclear power station technical field, especially relate to a nuclear power control rod stick position signal analogue means.

Background

In a nuclear power plant, a rod position control system changes the position of a control rod relative to a nuclear reactor by controlling the lifting, insertion, and holding movements of the control rod, and changes the reaction speed of the nuclear reactor by changing the position of the control rod relative to the nuclear reactor. The rod control position system comprises rod control coils and a data acquisition cabinet, wherein the motion trail of the control rod passes through the rod control coils, and when the control rod passes through one of the rod control coils in the motion process, the impedance of the rod control coils can change, namely the electric signals on the rod control coils can change; the data acquisition cabinet acquires and decodes and displays the electric signals of the change of the rod control coil, and the rod control position system monitors and controls the movement of the control rod in real time.

At present, a test device for testing a data acquisition cabinet is lacked in the prior art, so that the data acquisition cabinet is sent to a nuclear reaction site without being tested to access a rod control position system, the nuclear reaction site is not only inconvenient to test the data acquisition cabinet by using the actual movement of a control rod, and potential safety hazards are easily caused.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a nuclear power control rod position signal analogue means to the position signal to the control rod simulates, thereby realizes the convenient experiment to the data acquisition cabinet.

The embodiment of the utility model provides a nuclear power control rod position signal analogue means, the device includes:

the rod position simulation branch comprises a test switch and at least one resistor, and the resistance of the rod position simulation branch is changed by switching on or off the test switch;

the first rod position signal simulation group and the first rod position signal interface;

the first rod position signal simulation group comprises at least one rod position simulation branch; in the first rod position signal simulation group, all rod position simulation branches are connected in parallel, the first ends of the rod position simulation branches are connected with a power supply, and the second ends of the rod position simulation branches are connected with a first rod position signal interface;

the first rod position signal simulation group is used for simulating at least one rod position signal of the control rod according to the connection or disconnection of the test switch in the at least one rod position simulation branch circuit and transmitting the simulation signal of the at least one rod position signal to the first rod position signal interface.

Optionally, in the first rod position signal simulation group, the rod position simulation branch includes a first resistor and a second resistor, a first end of the first resistor is used as a first end of the rod position simulation branch, a second end of the first resistor is connected to a first end of the test switch, and a second end of the test switch is used as a second end of the rod position simulation branch; the first end of the second resistor is connected with the first end of the test switch, the second end of the second resistor is connected with the second end of the test switch, the resistance values of the first resistors of the rod position simulation branch circuits are equal, and the resistance values of the second resistors of the rod position simulation branch circuits are equal.

Optionally, the first rod position signal simulation group further comprises: a first analog group open circuit test branch and a first analog group short circuit test branch;

in the first rod position signal simulation group, the first end of a rod position simulation branch is connected with a power supply through a first simulation group open circuit test branch, and the first simulation group short circuit test branch is connected with the rod position simulation branch in parallel;

the first rod position signal simulation group is used for outputting a disconnection signal to the first rod position signal interface according to the connection and disconnection of the disconnection test branch of the first simulation group, and outputting a short circuit signal to the first rod position signal interface according to the connection and disconnection of the short circuit test branch of the first simulation group.

Optionally, the first analog group disconnection test branch comprises a first disconnection switch, a first end of the first disconnection switch is connected with the power supply, and a second end of the first disconnection switch is connected with the first end of the rod position analog branch;

the first analog group short circuit test branch comprises a first short circuit switch, and the first short circuit switch is connected with the rod position analog branch in parallel.

Optionally, the method further comprises: a second rod position signal interface;

the second rod position signal interface is connected with the second end of the rod position simulation branch circuit;

the second rod position signal interface is a coding card interface, and the first rod position signal interface is a cable interface;

the second rod position signal interface is connected with the coding card of the first data acquisition cabinet;

the first rod position signal interface is connected with a cable interface of the first data acquisition cabinet, and the cable interface of the first data acquisition cabinet is connected with a coding card of the first data acquisition cabinet.

Optionally, the system further comprises a second rod position signal simulation group, a third rod position signal interface and a fourth rod position signal interface;

the second rod position signal simulation group comprises at least one rod position simulation branch; in the second rod position signal simulation group, all rod position simulation branches are connected in parallel, the first ends of the rod position simulation branches are connected with a power supply, and the second ends of the rod position simulation branches are connected with a third rod position signal interface;

the second rod position signal simulation group is used for simulating at least one rod position signal of the control rod according to the connection or disconnection of the test switch in the at least one rod position simulation branch circuit and transmitting the simulation signal of the at least one rod position signal to the third rod position signal interface;

the third rod position signal interface is connected with a cable interface of the second data acquisition cabinet, and the cable interface of the second data acquisition cabinet is connected with a coding card of the second data acquisition cabinet;

the fourth rod position signal interface is a coding card interface, the fourth rod position signal interface is connected with the second end of the rod position simulation branch in the second rod position signal simulation group, and the fourth rod position signal interface is connected with the coding card of the second data acquisition cabinet.

Optionally, in the second rod position signal simulation group, the rod position simulation branch includes a third resistor and a fourth resistor, a first end of the third resistor is used as a first end of the rod position simulation branch, a second end of the third resistor is connected to a first end of the test switch, and a second end of the test switch is used as a second end of the rod position simulation branch; the first end of the fourth resistor is connected with the first end of the test switch, the second end of the fourth resistor is connected with the second end of the test switch, the resistance values of the third resistors of the rod position simulation branch circuits are equal, and the resistance values of the fourth resistors of the rod position simulation branch circuits are equal.

Optionally, the second rod position signal analog group further comprises: a second analog group open circuit test branch and a second analog group short circuit test branch;

in the second rod position signal simulation group, the first end of the rod position simulation branch is connected with the power supply through the second simulation group open circuit test branch, and the second simulation group short circuit test branch is connected with the rod position simulation branch in parallel;

the second rod position signal simulation group is used for outputting a disconnection signal to the third rod position signal interface or the fourth rod position signal interface according to the connection and disconnection of the disconnection test branch of the second simulation group, and is used for outputting a short circuit signal to the third rod position signal interface or the fourth rod position signal interface according to the connection and disconnection of the short circuit test branch of the second simulation group.

Optionally, the second analog group disconnection test branch comprises a second disconnection switch, a first end of the second disconnection switch is connected with the power supply, and a second end of the second disconnection switch is connected with the first end of the rod position analog branch;

the second simulation group short circuit test branch comprises a second short circuit switch, and the second short circuit switch is connected with the rod position simulation branch in parallel.

Optionally, the first rod position signal simulation group and the second rod position signal simulation group each comprise 24 rod position simulation branches.

The nuclear power control rod position signal simulation device provided by the embodiment of the utility model comprises a rod position simulation branch, wherein the rod position simulation branch comprises a test switch and at least one resistor, and the on or off of the test switch changes the resistance of the rod position simulation branch; the method comprises the steps that a first rod position signal simulation group is arranged, and the first rod position signal simulation group comprises at least one rod position simulation branch; in the first rod position signal simulation group, all rod position simulation branches are connected in parallel, the first ends of the rod position simulation branches are connected with a power supply, and the second ends of the rod position simulation branches are connected with a first rod position signal interface; the first rod position signal simulation group can simulate the rod control coil group through at least one rod position simulation branch, and further simulate the electric signal changed on the rod control coil when the position of the control rod relative to the nuclear reactor is changed through the change of the resistance of the rod position simulation branch, namely simulate the rod position signal of the control rod; the different stick position signals of the signal of telecommunication representation difference that changes on the different stick position coils, the different stick position signals represent the different positions of the relative nuclear reactor of control rod, and then the data acquisition cabinet can utilize before the input is used the embodiment of the utility model provides a nuclear power control rod stick position signal analogue means carries out convenient experiment, guarantees the safety of data acquisition cabinet stick accuse stick position system and nuclear power station when the nuclear reaction scene is put into use.

Drawings

Fig. 1 is a schematic structural diagram of a nuclear power control rod position signal simulation device provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a simulation process of a rod position signal by using the first rod position signal simulation group in FIG. 1;

fig. 3 is a schematic structural diagram of another nuclear power control rod position signal simulation apparatus 10 provided in the embodiment of the present invention;

fig. 4 is a schematic structural diagram of another nuclear power control rod position signal simulation device provided by the embodiment of the present invention;

fig. 5 is a schematic structural diagram of another nuclear power control rod position signal simulation apparatus provided in the embodiment of the present invention;

FIG. 6 is a schematic diagram of the structure of a rod control coil during simulation of an electrical signal of the rod control coil by using the second rod position signal simulation group in FIG. 5;

fig. 7 is a schematic structural diagram of another nuclear power control rod position signal simulation apparatus provided in the embodiment of the present invention;

fig. 8 is a schematic diagram of a simulation process of a rod position signal at a second time using the first rod position signal simulation group in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

As mentioned in the background art, a test device for testing a data acquisition cabinet is lacked in the prior art, when a manufactured data acquisition cabinet is generated, if the data acquisition cabinet needs to be tested before the data acquisition cabinet is put into a nuclear reaction field for use, the data acquisition cabinet needs to be moved to the nuclear reaction field for use to perform a test, and the data acquisition cabinet is moved back to a production plant after the test is completed, which wastes time and labor; whether the data acquisition cabinet can accurately work is unknown before the test, and if the cable interface of the data acquisition cabinet is connected with the rod control rod position system connector during the test, the rod control rod position system connector is high in grade, so that potential safety hazards are easily caused; and when the data acquisition cabinet is tested in a mode of putting into use in a nuclear reaction site, only real-time rod position signals of the control rods, namely electrical signals of rod control coil changes at the real-time positions of the control rods, can be measured, and any rod position signals of the control rods cannot be measured.

To this, this embodiment provides a nuclear power control rod position signal analogue means, and fig. 1 is the utility model discloses a nuclear power control rod position signal analogue means structure sketch map that the embodiment provides, refer to fig. 1, and the device 10 includes:

the rod position simulation branch circuit 110, the rod position simulation branch circuit 110 includes a test switch K1 and at least one resistor R, and the on or off of the test switch K1 changes the resistance of the rod position simulation branch circuit 110;

a first rod position signal simulation group 11 and a first rod position signal interface A;

the first rod position signal simulation group 11 comprises at least one rod position simulation branch 110; in the first rod position signal simulation group 11, each rod position simulation branch 110 is connected in parallel, a first end of the rod position simulation branch 110 is connected with the power supply V, and a second end of the rod position simulation branch 110 is connected with the first rod position signal interface a;

the first rod position signal simulation group 11 is configured to simulate at least one rod position signal of the control rod according to the on or off of the test switch K1 in the at least one rod position simulation branch 110, and transmit the analog signal of the at least one rod position signal to the first rod position signal interface a.

In this embodiment, the resistance of the rod position simulation branch 110 changes due to the on/off of the test switch K1 on one rod position simulation branch 110, so as to simulate the impedance change of a control rod due to the passing of a control coil during the movement of the control rod; correspondingly, the electrical signal changes due to the change of the resistance on one rod position simulation branch circuit 110 to simulate the change of the electrical signal due to the change of the impedance of one rod control coil, namely, one rod position signal of the control rod is simulated; that is to say, in this embodiment, when the test switch K1 on one rod position simulation branch 110 is turned on or off, the resistance of the rod position simulation branch 110 changes, and the impedance of a rod control coil changes when a control rod passes through the rod control coil during the movement process, and further, when the resistance of one rod position simulation branch 110 changes, the electrical signal on the rod position simulation branch 110 changes, and when the impedance of a rod control coil changes, the electrical signal on the rod control coil changes, and the electrical signal that changes on one rod control coil corresponds to one rod position signal of the control rod, so that the data collection cabinet can utilize one rod position simulation branch 110 to simulatively test and measure the rod position signal of the control rod relative to one position of the nuclear reactor (i.e., the electrical signal that changes on the corresponding rod control coil).

The rod position simulation branch 110 exemplarily illustrated in fig. 1 includes two resistors R (R1 and R2), and the rod position simulation branch 110 may include one resistor R, two resistors R, three resistors R, or more resistors R, which is not limited in the embodiment. The test switch K1 in the rod position analog branch 110 switches from on to off or from off to on, which causes the resistance of the rod position analog branch 110 to change, so that the electrical signal on the rod position analog branch 110 changes, for example, the voltage signal or the current signal output by the rod position analog branch 110 changes. If the data acquisition cabinet can accurately measure the change of the electric signal caused by the connection or disconnection of the test switch K1 on the rod position simulation branch 110, the success of the test of the data acquisition cabinet is indicated, and the data acquisition cabinet can measure the rod position signal of the control rod at one position relative to the nuclear reactor.

In this embodiment, the first rod position signal simulation group 11 may include one or more rod position simulation branches 110, a specific setting number of the rod position simulation branches 110 in the first rod position signal simulation group 11 may be set according to a number of actual rod control coils in a rod control coil group in a rod control position system, each rod position simulation branch 110 corresponds to simulating one rod control coil, fig. 1 illustrates only 4 rod position simulation branches 110, for example, 22, 23, or 24 rod position simulation branches 110 may be set in the first rod position signal simulation group 11. In this embodiment, if there are 24 actual rod control coils, the data acquisition cabinet includes 24 interfaces for receiving signals of the rod control coils, and 24 rod position simulation branches 110 are disposed in the first rod position simulation group 11; if there are 23 actual rod-controlled coils, the data acquisition cabinet includes 23 interfaces for receiving signals of the rod-controlled coils, and 23 rod-position simulation branches 110 are arranged in the first rod-position simulation group 11; if there are 22 actual rod control coils, the data acquisition cabinet includes 22 interfaces for receiving signals of the rod control coils, and 22 rod position simulation branches 110 are provided in the first rod position simulation group 11.

For example, referring to fig. 1, when the first rod position signal simulation group 11 is used to simulate a situation when a control rod passes through any one of the rod control coils in the rod control coil group, only on the basis that the test switches K1 in all the rod position simulation branches 110 in the first rod position signal simulation group 11 are turned on, the test switch K1 in any one of the rod position simulation branches 110 is turned off, and an electrical signal of the rod position simulation branch 110 of the test switch K1 that is turned off changes, and corresponding to the change in the electrical signal of the rod control coil when the control rod passes through any one of the rod control coils in the rod control coil group, different rod position simulation branches 110 simulate different rod control coils. In view of the above, can simulate the electrical signal that the corresponding excellent accuse coil of optional position of the required control rod of nuclear reaction scene changes through first stick position signal simulation group 11, simulate the stick position signal of the optional position of the required control rod of nuclear reaction scene promptly to realize that the data acquisition cabinet is to the experimental measurement of the stick position signal that the optional position of required control rod corresponds, guarantee that the data acquisition cabinet is accurate work when putting into use, guarantee excellent accuse stick position system and nuclear power station safety. Of course, it is understood that, in this embodiment, the test switches K1 of the multiple rod position simulation branches 110 may also be turned on to off at the same time, or turned off to on at the same time, that is, the multiple rod position simulation branches 110 operate at the same time to test whether there is mutual interference between the multiple interfaces of the data acquisition cabinet for receiving the signals of the rod control coils.

For example, referring to fig. 2, fig. 2 is a schematic diagram of a structure in a process of simulating a certain rod position signal by using the first rod position signal simulation group 11 in fig. 1, where the test switch K1 of all the rod position simulation branches 110 of the first rod position signal simulation group 11 in fig. 2 is turned on, and when the test switch K1 in the second rod position simulation branch 110 (from top to bottom) is turned off, the resistance of the second rod position simulation branch 110 in the first rod position signal simulation group 11 changes, that is, the electrical signal of the second rod position simulation branch 110 changes, so that the data acquisition cabinet can simulatively test and measure the electrical signal of the corresponding rod control coil at a position of the control rod relative to the nuclear reactor by using the second rod position simulation branch 110, and thus, different rod position simulation branches 110 in the first rod position signal simulation group 11 correspond to different rod control coils in the simulated rod position system, the data acquisition cabinet can measure the electric signals of the rod control coils of one rod control coil group in the rod control position system through the simulated ground test of the first rod position signal simulation group 11, so that the simulation test measurement is carried out on all positions of the control rod, which can be represented by the rod control coils of the rod control coil group in the rod control position system, relative to the nuclear reactor, and the reliable test of the data acquisition cabinet before the data acquisition cabinet is put into use is ensured.

The power supply V is used for supplying power to the rod position analog branch 110, for example, the power supply is 6V. The electrical signal varied on the rod position simulating branch 110 is transmitted to the first rod position signal interface a through the second end of the rod position simulating branch 110, and the data acquisition cabinet can acquire the analog signal (i.e., the varied electrical signal on the simulation branch) of the rod position signal (i.e., the varied electrical signal on the rod control coil) from the first rod position signal interface a. In this embodiment, the power source V may be provided through the first rod position signal interface a, that is, not only the rod position signal may be obtained from the first rod position signal interface a, but also the power source V for supplying power to the rod position analog branch circuit 110 may be provided through the first rod position signal interface a. Optionally, the test switch K1 is a dial switch.

To sum up, the nuclear power control rod position signal simulation apparatus 10 provided by the embodiment of the present invention simulates the rod control coil by setting the rod position simulation branch 110, wherein the change in the resistance of the rod position simulation branch 110 corresponds to the change in the impedance of the rod control coil, that is, the change in the electrical signal of the rod position simulation branch 110 corresponds to the change in the electrical signal of the rod control coil, that is, the change in the resistance of one rod position simulation branch 110 in the first rod position signal simulation group 11 represents the change in the electrical signal of the rod position coil simulated by the rod position simulation branch 110, that is, represents the change in the electrical signal of the change caused by the passage of the control rod through the rod position simulation branch 110, so that the present embodiment can simulate the electrical signal of the change caused by the passage of the control rod through each rod control coil in one rod position system by setting the first rod position signal simulation group 11, the data acquisition cabinet only utilizes the nuclear power control rod position signal simulation device 10 that this embodiment provided to can carry out reliable experimental measurement before coming into operation, and need not to move the data acquisition cabinet to the nuclear reaction scene and experimental with the mode of coming into operation, labour saving and time saving, and need not to be connected with excellent position system connector of accuse under the condition that whether the data acquisition cabinet can accurate work yet, avoid causing the potential safety hazard, and based on the first stick position signal simulation group 11 of this embodiment can measure the signal of telecommunication (arbitrary stick position signal) of arbitrary stick accuse coil under the control rod optional position.

Optionally, with continued reference to fig. 1, in the first rod position signal simulation group 11, the rod position simulation branch 110 includes a first resistor R1 and a second resistor R2, a first end of the first resistor R1 serves as a first end of the rod position simulation branch 110, a second end of the first resistor R1 is connected to a first end of the test switch K1, and a second end of the test switch K1 serves as a second end of the rod position simulation branch 110; the first end of the second resistor R2 is connected to the first end of the test switch K1, the second end of the second resistor R2 is connected to the second end of the test switch K1, the first resistors R1 of the rod-position analog branches 110 have the same resistance, and the second resistors R2 of the rod-position analog branches 110 have the same resistance.

Specifically, referring to fig. 1, in order to make the design of the rod position signal simulation apparatus 10 of the nuclear power control rod simpler and more convenient to perform simulation test on the rod position signal, the rod position simulation branch 110 in the first rod position signal simulation group 11 only includes a first resistor R1, a second resistor R2 and a test switch K1, the first resistor R1 and the test switch K1 are connected in series, and the second resistor R2 and the test switch K1 are connected in parallel. When the test switch K1 is turned on, the resistance of the rod position analog branch 110 is approximately equal to the resistance of the first resistor R1 and the second resistor R2 connected in parallel; when the test switch K1 is turned off, the resistance of the rod position simulation branch 110 is equal to the resistance of the first resistor R1 and the second resistor R2 connected in series, that is, the test switch K1 is turned on to off or turned off to on, and the resistances of the rod position simulation branch 110 are all changed, that is, the electrical signal of the rod position simulation branch 110 is changed.

On this basis, the first resistor R1 of each rod position analog branch 110 has the same resistance value, and the second resistor R2 of each rod position analog branch 110 has the same resistance value. When the data acquisition cabinet is used for test measurement based on the first rod position signal simulation group 11, the test switches K1 of all the rod position simulation branches 110 in the first rod position signal simulation group 11 are switched on in a pilot mode, at this time, the resistances on the rod position simulation branches 110 are equal in size, the output electric signals are the same, when a certain rod position signal needs to be tested and measured, the test switch K1 in the rod position simulation branch 110 corresponding to the corresponding rod control coil is switched off, that is, the electric signal on the rod position simulation branch 110 corresponding to only the rod control coil can be measured to be changed, so that if the value of the output electric signal is adopted to judge whether the electric signal is changed, for example, if the voltage value of the output electric signal is changed to judge whether the electric signal is changed, when the measured values of the electric signals output by the other rod position simulation branches 110 are the first voltage value when the first resistor R1 and the second resistor R2 are connected in parallel, only the value of the electrical signal of the rod position analog branch circuit 110 corresponding to the rod-controlled coil is measured to be changed from the first voltage value to the second voltage value when the first resistor R1 and the second resistor R2 are connected in series, so that the problem that the recording and the judgment of a plurality of voltage values are too complicated when different rod position analog branch circuits 110 output voltage values with different magnitudes for judgment is avoided. Moreover, the resistance values of the first resistors R1 of the rod position simulation branches 110 are equal, and the resistance values of the second resistors R2 of the rod position simulation branches 110 are equal, so that the rod position simulation branches 110 can be compared with each other, and the accuracy of measuring the electric signal of any one rod position simulation branch 110 by the data acquisition cabinet can be tested more easily.

Optionally, fig. 3 is a schematic structural diagram of another nuclear power control rod position signal simulation apparatus provided by an embodiment of the present invention, referring to fig. 3, the first rod position signal simulation group 11 further includes: a first analog group open circuit test branch 120 and a first analog group short circuit test branch 130;

in the first rod position signal simulation group 11, a first end of a rod position simulation branch 110 is connected with a power supply V through a first simulation group open circuit test branch 120, and a first simulation group short circuit test branch 130 is connected with the rod position simulation branch 110 in parallel;

the first analog group open circuit test branch circuit 120 is used for outputting a short circuit signal to the first rod position signal interface a according to the on/off of the first analog group open circuit test branch circuit 11.

Specifically, the power source V may be provided through the first stick position signal interface a. In the rod position control system, when the rod control coil group is open, the whole rod control coil group can not work normally any more, so in this embodiment, on the basis of simulating each rod control coil in the rod control coil group, a first simulation group open circuit test branch 120 is further provided to simulate the open circuit condition of the rod control coil group. For example, the data collection cabinet is connected to the rod position signal simulation apparatus 10 of the nuclear control rod in fig. 3, and referring to fig. 3, when the first analog group open circuit test branch 120 is open circuit, if the data collection cabinet can measure that the first rod position signal analog group 11 is open circuit, that is, an open circuit signal is measured at the first rod position signal interface a, it indicates that the test of the data collection cabinet is successful, and the data collection cabinet can simulate the condition that the rod control coil group is open circuit when being put into use.

In addition, in the rod position control system, when a short circuit occurs in the rod coil assembly, the whole rod coil assembly cannot work normally any more, so in this embodiment, on the basis of simulating each rod coil in the rod coil assembly, a first simulation set short circuit test branch 130 is further provided to simulate the short circuit of the rod coil assembly. For example, the data collection cabinet is connected to the rod position signal simulation apparatus 10 of the nuclear power control rod in fig. 3, referring to fig. 3, when the first rod position signal simulation group 11 is short-circuited by the first simulation group short-circuit test branch 130, if the data collection cabinet can measure the short-circuit of the first rod position signal simulation group 11, that is, the short-circuit signal is measured at the first rod position signal interface a, it indicates that the test of the data collection cabinet is successful, and the data collection cabinet can simulate the short-circuit condition of the rod control coil group when being put into use.

Optionally, with continued reference to fig. 3, the first analog set disconnection testing branch 120 includes a first disconnection switch K2, a first end of the first disconnection switch K2 is connected to the power source V, and a second end of the first disconnection switch K2 is connected to the first end of the rod position analog branch 110; the first analog group short-circuit test branch 130 includes a first short-circuit switch K3, and the first short-circuit switch K3 is connected in parallel with the rod position analog branch 110.

Specifically, the first cut-off switch K2 is originally turned on to ensure that the data collection cabinet can perform the test measurement on the electrical signal of the rod position simulation branch 110 in the first rod position signal simulation group 11. When the data acquisition cabinet is used for testing and measuring the open circuit condition of the first rod position signal simulation group 11, the first open circuit switch K2 can be switched off, so that the first rod position signal simulation group 11 is opened, at the moment, if the data acquisition cabinet can measure the open circuit of the first rod position signal simulation group 11, the success of the test of the data acquisition cabinet is shown, and the data acquisition cabinet can simulate the open circuit condition of the rod control coil group when the data acquisition cabinet is put into use. Alternatively, the first disconnect switch K2 may be a dip switch.

The first short-circuit switch K3 is originally turned off to ensure that the data collection cabinet can perform test measurement on the electrical signals of the rod position simulation branch 110 in the first rod position signal simulation group 11. When the short circuit condition of the first rod position signal simulation group 11 is measured in the data acquisition cabinet test, the first short circuit switch K3 can be switched on, the first rod position signal simulation group 11 is short-circuited, at the moment, if the data acquisition cabinet can measure the short circuit of the first rod position signal simulation group 11, the test success of the data acquisition cabinet is shown, and the data acquisition cabinet can simulate the condition of the short circuit of the rod control coil group when the data acquisition cabinet is put into use. Alternatively, the first shorting switch K3 may be a dip switch.

Optionally, fig. 4 is a schematic structural diagram of another nuclear power control rod position signal simulation apparatus provided by the embodiment of the present invention, referring to fig. 4, the nuclear power control rod position signal simulation apparatus 10 further includes: a second rod position signal interface B;

the second rod position signal interface B is connected to the second end of the rod position simulating branch 110 in the first rod position signal simulating group 11;

the second rod position signal interface B is a coding card interface, and the first rod position signal interface A is a cable interface;

the second rod position signal interface B is connected with the coding card B1 of the first data acquisition cabinet 20;

the first rod position signal interface a is connected with the cable interface a1 of the first data acquisition cabinet 20, and the cable interface a1 of the first data acquisition cabinet 20 is connected with the code card B1 of the first data acquisition cabinet 20.

Specifically, in the nuclear reaction site, one data acquisition cabinet correspondingly acquires the electrical signals of the rod control coils in one rod control coil group, so that the first rod position signal simulation group 11 corresponds to the first data acquisition cabinet 20, the first data acquisition cabinet 20 can acquire the electrical signals of the rod position simulation branch 110 in the first rod position signal simulation group 11 from the first rod position signal interface a, the electrical signals of the rod position simulation branch 110 are transmitted to the cable interface a1 of the first data acquisition cabinet 20 through the first rod position signal interface a, and then are transmitted to the encoding card B1 of the first data acquisition cabinet 20 for decoding and displaying, so as to monitor and control the position of the control rod relative to the nuclear reactor. On this basis, the first data collecting cabinet 20 can also obtain the electrical signal of the rod position simulating branch 110 in the first rod position signal simulating group 11 from the second rod position signal interface B, the electrical signal of the rod position simulating branch 110 is directly transmitted to the encoding card B1 of the first data collecting cabinet 20 through the second rod position signal interface B for decoding and displaying, and the worker can select to obtain the electrical signal of the rod position simulating branch 110 in the first rod position signal simulating group 11 from the first rod position signal interface a or obtain the electrical signal of the rod position simulating branch 110 in the first rod position signal simulating group 11 from the second rod position signal interface B according to actual needs. In addition, in this embodiment, the power V in the first bar position signal simulating group 11 can also be provided by the second bar position signal interface B, and it can be understood that, when the bar position signal is acquired through the first bar position signal interface a to the encoding card B1, the power V is also provided to the first bar position signal simulating group 11 through the first bar position signal interface a, and when the bar position signal is acquired through the second bar position signal interface B to the encoding card B1, the power V is also provided to the second bar position signal simulating group 12 through the second bar position signal interface B.

Optionally, fig. 5 is a schematic structural diagram of another nuclear power control rod position signal simulation apparatus provided in an embodiment of the present invention, and referring to fig. 5, the nuclear power control rod position signal simulation apparatus 10 further includes a second rod position signal simulation group 12, a third rod position signal interface C, and a fourth rod position signal interface D;

the second rod position signal simulating group 12 comprises at least one rod position simulating branch 110; each rod position simulation branch 110 in the second rod position signal simulation group 12 is connected in parallel, a first end of the rod position simulation branch 110 is connected with the power supply V, and a second end of the rod position simulation branch 110 is connected with a third rod position signal interface C;

the second rod position signal simulation group 12 is used for simulating at least one rod position signal of a control rod according to the connection or disconnection of the test switch K1 in the at least one rod position simulation branch 110 and transmitting the simulated signal of the at least one rod position signal to the third rod position signal interface C;

the third rod position signal interface C is connected with a cable interface C1 of the second data acquisition cabinet 30, and a cable interface C1 of the second data acquisition cabinet 30 is connected with a coding card D1 of the second data acquisition cabinet 30;

the fourth rod position signal interface D is an encoding card interface, and is connected to the second end of the rod position simulation branch 110 in the second rod position signal simulation group 12, and is connected to the encoding card D1 of the second data acquisition cabinet 30.

Specifically, the power V of the second bar position signal simulating group 12 may be provided by the third bar position signal interface C, that is, the bar position signal in the second bar position signal simulating group 12 may be obtained from the third bar position signal interface C, and the power V of the second bar position signal simulating group 12 may also be provided by the third bar position signal interface C. In the nuclear reaction site, two rod control coil groups are provided, when one of the rod control coil groups fails, for example, a short circuit or a broken circuit occurs or the rod position simulation branch circuit 110 fails, the rod control coil group cannot continue to operate normally, and the other rod control coil group is switched to monitor the position of the control rod relative to the nuclear reactor, so that the second rod position signal simulation group 12 is further provided in this embodiment. The second rod position signal simulating group 12 may include one or more rod position simulating branches 110, the specific number of the rod position simulating branches 110 in the second rod position signal simulating group 12 may be set according to the number of actual rod control coils in another rod control coil group in the rod control position system, each rod position simulating branch 110 is corresponding to simulate one rod control coil, fig. 5 illustrates only 4 rod position simulating branches 110, for example, 22, 23, or 24 rod position simulating branches 110 may be set in the second rod position signal simulating group 12.

For example, referring to fig. 5, when the second rod position signal simulation group 12 is used to simulate a situation when a control rod passes through any one of the rod control coils in the other rod control coil group, only the test switch K1 in any one of the rod position simulation branches 110 needs to be turned off on the basis that the test switches K1 in all the rod position simulation branches 110 in the second rod position signal simulation group 12 are turned on, so that the electrical signal of the rod position simulation branch 110 of the test switch K1 is turned off, and the electrical signal of the rod control coil changes when the control rod passes through any one of the rod control coils in the other rod control coil group, and different rod position simulation branches 110 simulate different rod control coils. In view of the above, can simulate the electrical signal that the corresponding excellent accuse coil of optional position of the required control rod of nuclear reaction scene changes through second stick position signal simulation group 12, simulate the stick position signal of the optional position of the required control rod of nuclear reaction scene promptly to realize that the data acquisition cabinet is to the experimental measurement of the stick position signal that the optional position of required control rod corresponds, guarantee that the data acquisition cabinet is accurate work when putting into use, guarantee excellent accuse stick position system and nuclear power station safety.

For example, referring to fig. 6, fig. 6 is a schematic structural diagram of a process of simulating an electrical signal of a rod control coil by using the second rod position signal simulation group in fig. 5, where the test switches K1 of all the rod position simulation branches 110 of the second rod position signal simulation group 12 in fig. 6 are turned on, when the test switch K1 in the first rod position simulation branch 110 (from top to bottom) is turned off, the resistance of the first rod position simulation branch 110 in the second rod position signal simulation group 12 changes, that is, the electrical signal of the first rod position simulation branch 110 changes, so that the data acquisition cabinet can simulatively test and measure an electrical signal of a corresponding rod control coil at a position of a control rod relative to a nuclear reactor by using the first rod position simulation branch 110, and thus, different simulation branches in the second rod position signal simulation group 12 correspond to different rod control coils in a rod position simulation system, the data acquisition cabinet can measure the electrical signal of the rod control coil of the other rod control coil group in the rod control position system through the simulated ground test of the second rod position signal simulation group 12, so that the simulation test measurement is carried out on all positions of the control rod, which can be represented by the rod control coil of the other rod control coil group in the rod control position system, relative to the nuclear reactor, and the reliable test of the data acquisition cabinet before the data acquisition cabinet is put into use is ensured.

The second rod position signal simulation group 12 corresponds to the second data collection cabinet 30, the second data collection cabinet 30 can obtain the electrical signal of the rod position simulation branch 110 in the second rod position signal simulation group 12 from the third rod position signal interface C, the electrical signal of the rod position simulation branch 110 is transmitted to the cable interface C1 of the second data collection cabinet 30 through the third rod position signal interface C, and then is transmitted to the code card D1 of the second data collection cabinet 30 for decoding and displaying, so as to monitor and control the position of the control rod relative to the nuclear reactor. On this basis, the second data collecting cabinet 30 can further obtain the electrical signal of the rod position simulating branch 110 in the second rod position signal simulating group 12 through the fourth rod position signal interface D, the electrical signal of the rod position simulating branch 110 is directly transmitted to the encoding card D1 of the second data collecting cabinet 30 through the fourth rod position signal interface D for decoding and displaying, and the worker can select to obtain the electrical signal of the rod position simulating branch 110 in the second rod position signal simulating group 12 from the third rod position signal interface C or from the fourth rod position signal interface D according to actual needs. In addition, in this embodiment, the power V in the second bar position signal simulating group 12 can be provided by the fourth bar position signal interface D, and it can be understood that, when the bar position signal is acquired by the third bar position signal interface C to the code card D1, the power V is also provided to the second bar position signal simulating group 12 by the third bar position signal interface C, and when the bar position signal is acquired by the fourth bar position signal interface D to the code card D1, the power V is also provided to the second bar position signal simulating group 12 by the fourth bar position signal interface D.

Alternatively, first data collection cabinet 20 and second data collection cabinet 30 may be integrated into a unitary data collection cabinet. In addition, fig. 6 also illustrates that each of the bar analog branches 110 is grounded by grounding the first to fourth bar signal interfaces a to D.

In addition, in the rod position system simulated by the nuclear power control rod position signal simulator 10 in the present embodiment, one rod control coil group and the other rod control coil group may be coaxially staggered. For example, a first rod control coil in one rod control coil group and a first rod control coil in another rod control coil group are coaxially and adjacently arranged; the second rod control coil in one rod control coil group is positioned between the first rod control coil and the second rod control coil in the other rod control coil group.

Optionally, with continued reference to fig. 5, in the second rod position signal simulating group 12, the rod position simulating branch 110 includes a third resistor R3 and a fourth resistor R4, a first end of the third resistor R3 serves as a first end of the rod position simulating branch 110, a second end of the third resistor R3 is connected to a first end of the test switch K1, and a second end of the test switch K1 serves as a second end of the rod position simulating branch 110; the first end of the fourth resistor R4 is connected to the first end of the test switch K1, the second end of the fourth resistor R4 is connected to the second end of the test switch K1, the third resistors R3 of the rod-position analog branches 110 have the same resistance, and the fourth resistors R4 of the rod-position analog branches 110 have the same resistance.

Specifically, in order to make the design of the nuclear power control rod position signal simulation device 10 simpler and more simply perform simulation measurement on the electrical signals of the change of the rod control coil, the rod position simulation branch 110 in the second rod position signal simulation group 12 only includes a third resistor R3, a fourth resistor R4 and a test switch K1, the third resistor R3 and the test switch K1 are connected in series, and the fourth resistor R4 and the test switch K1 are connected in parallel. When the test switch K1 is turned on, the resistance of the rod position simulation branch 110 is approximately equal to the resistance of the third resistor R3 and the fourth resistor R4 connected in parallel, and when the test switch K1 is turned off, the resistance of the rod position simulation branch 110 is equal to the resistance of the third resistor R3 and the fourth resistor R4 connected in series, that is, the test switch K1 is turned on to turned off or turned off to turned on, the resistances of the rod position simulation branch 110 are all changed, that is, the electrical signal of the rod position simulation branch 110 is changed.

On this basis, the third resistor R3 of each rod position analog branch 110 has the same resistance value, and the fourth resistor R4 of each rod position analog branch 110 has the same resistance value. When the data acquisition cabinet is based on the test measurement of the second rod position signal simulation group 12, the test switches K1 of all the rod position simulation branches 110 in the second rod position signal simulation group 12 are firstly turned on, at this time, the resistances on the rod position simulation branches 110 are equal in size, the output electric signals are the same, when a certain rod position signal needs to be tested and measured, the test switch K1 in the rod position simulation branch 110 corresponding to the corresponding rod control coil is turned off, that is, the electric signal on the rod position simulation branch 110 corresponding to only the rod control coil can be measured to be changed, so that, if the value of the output electric signal is adopted to judge whether the electric signal is changed, for example, the change of the voltage value of the output electric signal is adopted to judge whether the electric signal is changed, when the measured values of the electric signals output by the rest of the rod position simulation branches 110 are the third voltage value when the third resistor R3 and the fourth resistor R4 are connected in parallel, only the measured value of the electrical signal on the rod position simulation branch 110 corresponding to the rod control coil is changed from the third voltage value to the fourth voltage value when the third resistor R3 and the fourth resistor R4 are connected in series, so that when different rod position simulation branches 110 output different voltage values for judgment, the recording and judgment of a plurality of voltage values are too complicated, the resistance values of the third resistors R3 of the rod position simulation branches 110 are equal, and the resistance values of the fourth resistors R4 of the rod position simulation branches 110 are equal, and further, the rod position simulation branches 110 can be compared with each other, and the accuracy of the test data acquisition cabinet in measuring the electrical signal of any one rod position simulation branch 110 is easier.

Considering that one rod control coil group and the other rod control coil group in the rod control position system simulated by the nuclear power control rod position signal simulation device 10 in this embodiment are replaced with the rod control coil group, that is, when one rod control coil group fails, the rod control coil group cannot continue to operate normally, and the rod control coil group is switched to the other rod control coil group to monitor and control the position of the control rod relative to the nuclear reactor, the resistance of the third resistor R3 can be equal to the resistance of the first resistor R1, and the resistance of the fourth resistor R4 is equal to the resistance of the second resistor R2, so as to ensure the consistency of the simulation of the first rod position signal simulation group 11 and the second rod position signal simulation group 12 on the two rod control coil groups.

Optionally, fig. 7 is a schematic structural diagram of another nuclear power control rod position signal simulation apparatus provided by an embodiment of the present invention, referring to fig. 7, the second rod position signal simulation group 12 further includes: a second analog group open circuit test branch 140 and a second analog group short circuit test branch 150;

in the second rod position signal simulation group 12, the first end of the rod position simulation branch 110 is connected to the power supply V through the second simulation group open circuit test branch 140, and the second simulation group short circuit test branch 150 is connected in parallel with the rod position simulation branch 110;

the second bar position signal simulation group 12 is configured to output an open-circuit signal to the third bar position signal interface C or the fourth bar position signal interface D according to the on/off of the second simulation group open-circuit test branch 140, and output a short-circuit signal to the third bar position signal interface C or the fourth bar position signal interface D according to the on/off of the second simulation group short-circuit test branch 150.

Specifically, a second analog group open circuit test branch 140 is provided for the second rod position analog signal group to simulate the open circuit condition of the second rod position analog signal group. For example, the data collection cabinet is connected to the rod position signal simulation device 10 of the nuclear control rod in fig. 7, and referring to fig. 7, when the second analog group open circuit test branch 140 is open, if the data collection cabinet can measure the open circuit signal of the open circuit of the second rod position signal analog group 12, the test of the data collection cabinet is successful, and the data collection cabinet can simulate the condition that the rod control coil group is open when being put into use.

And, a second analog group short circuit test branch 150 is provided for the second rod position analog signal group to simulate the short circuit condition of the second analog signal group. For example, the data collection cabinet is connected to the rod position signal simulation apparatus 10 of the nuclear power control rod in fig. 7, and referring to fig. 7, when the second rod position signal simulation group 12 is short-circuited by the second simulation group short-circuit test branch 150, if the data collection cabinet can measure the short-circuit signal of the short-circuit of the second rod position signal simulation group 12, it indicates that the test of the data collection cabinet is successful, and the data collection cabinet can simulate the short-circuit of the rod control coil group when being put into use.

Optionally, with continued reference to fig. 7, the second analog set disconnection testing branch 140 includes a second disconnection switch K4, a first end of the second disconnection switch K4 is connected to the power source V, and a second end of the second disconnection switch K4 is connected to the first end of the rod position analog branch 110; the second analog group short circuit test branch 150 includes a second short circuit switch K5, and the second short circuit switch K5 is connected in parallel with the rod position analog branch 110.

Specifically, the second cut-off switch K4 is originally turned on to ensure that the data collection cabinet can perform measurement test measurement on the electrical signal of the rod position simulation branch 110. When the data acquisition cabinet is used for testing and measuring the open circuit condition of the second rod position signal simulation group 12, the second open circuit switch K4 can be switched off, so that the second rod position signal simulation group 12 is open, at the moment, if the data acquisition cabinet can measure the open circuit of the second simulation signal simulation group, the success of the test of the data acquisition cabinet is shown, and the data acquisition cabinet can simulate the open circuit condition of the rod control coil group when being put into use. Alternatively, the second disconnect switch K4 may be a dip switch.

Second short-circuit switch K5 originally turns off and enough measures the signal of telecommunication of stick position simulation branch road 110 in order to guarantee the data acquisition cabinet, when the short circuit condition of data acquisition cabinet experimental test second stick position signal simulation group 12, switch on second short-circuit switch K5, second stick position signal simulation group 12 is by the short circuit, can measure second analog signal simulation group short circuit if the data acquisition cabinet this moment, then show that the data acquisition cabinet is experimental successful, the data acquisition cabinet can simulate the condition that the short circuit appears to stick accuse coil group when putting into use. Alternatively, the second shorting switch K5 may be a dip switch.

Optionally, the first rod position signal simulating group 11 and the second rod position signal simulating group 12 each include 24 rod position simulating branches 110.

In this embodiment, one group of rod control coils and the other group of rod control coils in the rod position system simulated by the nuclear power control rod position signal simulation apparatus 10 may both include 22 rod control coils, and the first rod position signal simulation group 11 and the second rod position signal simulation group 12 are both configured to include 24 rod position simulation branches 110, wherein, in order to avoid that the test accuracy of the 1 st rod position simulation branch 110 and the last rod position simulation branch 110 in the first rod position signal simulation group 11 or the second rod position signal simulation group 12 is not high, the 2 nd rod position simulation branch 110 to the 23 rd rod position simulation branch 110 in the first rod position signal simulation group 11 and the second rod position signal simulation group 12 may be discarded, and are selected to simulate the 22 rod control coils. In addition, the first rod position signal simulating group 11 and the second rod position signal simulating group 12 in the present embodiment may be disposed in a container, wherein the first resistor R1 to the fourth resistor R4 may be disposed in the container, and each of the test switch K1, the open switch and the short switch may be disposed on a cover in the container. The container can be a small draw-bar box, so that a worker can conveniently carry the nuclear power control rod position signal simulation device 10 to a data acquisition cabinet for test measurement.

The embodiment of the utility model provides a still provide a control method of nuclear power control rod position signal analogue means 10, this method by above-mentioned technical scheme nuclear power control rod position signal analogue means 10 carry out, this method includes:

at a first moment, controlling to turn off the test switch K1 of one rod position simulating branch circuit 110 in the first rod position signal simulating group 11 to simulate one rod position signal of a control rod and transmit the analog signal of the rod position signal to the first rod position signal interface a or the second rod position signal interface B;

at the second time, controlling to turn off the test switch K1 of one rod position simulating branch 110 in the rod position simulating branches 110 except the rod position simulating branch 110 which is turned off at the first time in the first rod position signal simulating group 11, so as to simulate another rod position signal of the control rod and transmit the analog signal of the another rod position signal to the first rod position signal interface a or the second rod position signal interface B; the second time is after the first time.

Illustratively, after the test switch K1 of each rod position simulating branch 110 in the first rod position signal simulating group 11 is controlled to be turned on, referring to fig. 2, only the test switch K1 of the second rod position simulating branch 110 in the first rod position signal simulating group 11 is controlled to be turned off at a first time to simulate one rod position signal of a control rod and transmit the simulated signal of the rod position signal to the first rod position signal interface a or the second rod position signal interface B, referring to fig. 8, fig. 8 is a schematic structural diagram of a simulation process of one rod position signal at a second time by using the first rod position signal simulating group in fig. 1, that is, at a second time after the first time, only the test switch K1 of the penultimate rod position simulating branch 110 in the first rod position signal simulating group 11 is controlled to be turned off to simulate another rod position signal of the control rod and transmit the simulated signal of the rod position signal to the first rod position signal interface a or the second rod position signal interface a B; in this way, at any time after the test switch K1 of each rod position simulating branch 110 in the first rod position signal simulating group 11 is turned on, only the test switch K1 of one rod position simulating branch 110 in the first rod position signal simulating group 11 is controlled to be turned off, so as to simulate any rod position signal of the control rod, and the analog signal of the rod position signal is transmitted to the first rod position signal interface a or the second rod position signal interface B. In this embodiment, the control method for the second bar position signal simulating group 12 is the same as the control method for the first bar position signal simulating group 11, and the description thereof is omitted here.

The embodiment of the utility model provides a control method and the above-mentioned technical scheme of nuclear power control rod stick position signal analogue means 10 belong to the same utility model and conceive, can realize the same technological effect with the technological effect that nuclear power control rod stick position signal analogue means 10 realized, repeated content here is no longer repeated. It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A nuclear power control rod position signal simulation device is characterized by comprising:

the rod position simulation branch comprises a test switch and at least one resistor, and the resistance of the rod position simulation branch is changed by switching on or off the test switch;

the first rod position signal simulation group and the first rod position signal interface;

the first rod position signal simulation group comprises at least one rod position simulation branch; in the first rod position signal simulation group, the rod position simulation branches are connected in parallel, the first ends of the rod position simulation branches are connected with a power supply, and the second ends of the rod position simulation branches are connected with the first rod position signal interface;

the first rod position signal simulation group is used for simulating at least one rod position signal of the control rod according to the connection or disconnection of the test switch in at least one rod position simulation branch and transmitting the analog signal of the at least one rod position signal to the first rod position signal interface.

2. The nuclear power control rod position signal simulation device of claim 1,

in the first rod position signal simulation group, the rod position simulation branch comprises a first resistor and a second resistor, a first end of the first resistor is used as a first end of the rod position simulation branch, a second end of the first resistor is connected with a first end of the test switch, and a second end of the test switch is used as a second end of the rod position simulation branch; the first end of the second resistor is connected with the first end of the test switch, the second end of the second resistor is connected with the second end of the test switch, the resistance values of the first resistors of the rod position analog branches are equal, and the resistance values of the second resistors of the rod position analog branches are equal.

3. The nuclear power control rod position signal simulation device of claim 1,

the first rod position signal simulation group further comprises: a first analog group open circuit test branch and a first analog group short circuit test branch;

in the first rod position signal simulation group, the first end of the rod position simulation branch is connected with the power supply through the first simulation group open circuit test branch, and the first simulation group short circuit test branch is connected with the rod position simulation branch in parallel;

the first rod position signal simulation group is used for outputting a disconnection signal to the first rod position signal interface according to the connection and disconnection of the first simulation group disconnection test branch and outputting a short circuit signal to the first rod position signal interface according to the connection and disconnection of the first simulation group short circuit test branch.

4. The nuclear power control rod position signal simulation device of claim 3,

the first analog group circuit breaking test branch comprises a first circuit breaking switch, a first end of the first circuit breaking switch is connected with the power supply, and a second end of the first circuit breaking switch is connected with a first end of the rod position analog branch;

the first analog group short circuit test branch comprises a first short circuit switch, and the first short circuit switch is connected with the rod position analog branch in parallel.

5. The nuclear power control rod position signal simulation device of claim 1, further comprising: a second rod position signal interface;

the second rod position signal interface is connected with the second end of the rod position simulation branch in the first rod position signal simulation group;

the second rod position signal interface is a coding card interface, and the first rod position signal interface is a cable interface;

the second rod position signal interface is connected with a coding card of the first data acquisition cabinet;

the first rod position signal interface is connected with a cable interface of the first data acquisition cabinet, and the cable interface of the first data acquisition cabinet is connected with a coding card of the first data acquisition cabinet.

6. The nuclear power control rod position signal simulation device of claim 1,

the rod position signal simulation system also comprises a second rod position signal simulation group, a third rod position signal interface and a fourth rod position signal interface;

the second rod position signal simulation group comprises at least one rod position simulation branch; in the second rod position signal simulation group, the rod position simulation branches are connected in parallel, the first ends of the rod position simulation branches are connected with the power supply, and the second ends of the rod position simulation branches are connected with the third rod position signal interface;

the second rod position signal simulation group is used for simulating at least one rod position signal of the control rod according to the connection or disconnection of the test switch in at least one rod position simulation branch and transmitting the analog signal of the at least one rod position signal to the third rod position signal interface;

the third rod position signal interface is connected with a cable interface of a second data acquisition cabinet, and the cable interface of the second data acquisition cabinet is connected with a coding card of the second data acquisition cabinet;

the fourth rod position signal interface is a coding card interface, the fourth rod position interface is connected with the second end of the rod position simulation branch in the second rod position signal simulation group, and the fourth rod position signal interface is connected with the coding card of the second data acquisition cabinet.

7. The nuclear power control rod position signal simulation device of claim 6,

in the second rod position signal simulation group, the rod position simulation branch comprises a third resistor and a fourth resistor, a first end of the third resistor is used as a first end of the rod position simulation branch, a second end of the third resistor is connected with a first end of the test switch, and a second end of the test switch is used as a second end of the rod position simulation branch; the first end of the fourth resistor is connected with the first end of the test switch, the second end of the fourth resistor is connected with the second end of the test switch, the resistance values of the third resistors of the rod position analog branches are equal, and the resistance values of the fourth resistors of the rod position analog branches are equal.

8. The nuclear power control rod position signal simulation device of claim 6,

the second rod position signal simulation group further comprises: a second analog group open circuit test branch and a second analog group short circuit test branch;

in the second rod position signal simulation group, the first end of the rod position simulation branch is connected with the power supply through the second simulation group open circuit test branch, and the second simulation group short circuit test branch is connected with the rod position simulation branch in parallel;

the second rod position signal simulation group is used for outputting a disconnection signal to the third rod position signal interface or the fourth rod position signal interface according to the connection and disconnection of the second simulation group disconnection test branch, and outputting a short circuit signal to the third rod position signal interface or the fourth rod position signal interface according to the connection and disconnection of the second simulation group short circuit test branch.

9. The nuclear power control rod position signal simulation device of claim 8,

the second analog group circuit breaking test branch comprises a second circuit breaking switch, the first end of the second circuit breaking switch is connected with the power supply, and the second end of the second circuit breaking switch is connected with the first end of the rod position analog branch;

the second simulation group short circuit test branch comprises a second short circuit switch, and the second short circuit switch is connected with the rod position simulation branch in parallel.

10. The nuclear power control rod position signal simulation device of claim 9,

the first rod position signal simulation group and the second rod position signal simulation group comprise 24 rod position simulation branches.

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