RU2310245C2 - Device for controlling nuclear-reactor actuating mechanisms - Google Patents

Abstract

FIELD: control and protection systems of nuclear power reactors.

SUBSTANCE: proposed device for controlling nuclear-reactor actuating mechanism has n monitoring and control units, where n is number of reactor control-element groups (for instance, ten ones adopted for VVER-1000 reactor), group control switch, voltage supply, automatic reactor-power regulator, pressure sensor, neutron flux detector, diode, first and second input terminals, first and second controllable switches. Newly introduced in device are group selection switch, NOT gate, and AND gate.

EFFECT: enlarged functional capabilities of control device due to capability of using reactor power regulator for controlling actuating mechanisms.

1 cl, 7 dwg

Description

The invention relates to the field of control systems and protection of nuclear power reactors.

A known position sensor of a regulatory body of a nuclear reactor containing a shunt rigidly connected to the regulatory body, indicators of the position of the shunt, evenly spaced along the axis of movement of the shunt, and the shunt is made of magnetic and non-magnetic spacers with a total length equal to the stroke of the shunt (Patent of the Russian Federation No. 2073917, C. G21C 7/14, 7/36, 1997).

The position sensor, as the regulatory body moves, produces a code combination of the position of the adjustable body, removed simultaneously from all position indicators, respectively, by closing or opening by magnetic and non-magnetic spacers of the shunt of the magnetic circuits of the position indicators.

This sensor is used in modern systems of control and protection of VVER-1000 reactors.

The closest in technical essence is a control device for the executive mechanism of a nuclear reactor, containing n control and control devices and n devices for generating control signals, where n is the number of groups of regulatory bodies of a nuclear reactor, taken, for example, for reactors of the VVER-1000 type equal to 10, the key mode selection, group control key, group selection key, voltage source, automatic reactor power controller, pressure sensor, neutron flux detector, diode, first and second input to the hems, the first and second controlled keys, the outputs of the mode selection key are connected by a second one with the input of the first section of the group control key and the control input of the second managed key, the third with the input of the reactor automatic power regulator, the first input of the first monitoring and control device is connected to the input of the selection key modes, the output of the voltage source, the second input of the nth (tenth) monitoring and control device and through the second managed key with the input of the second section of the group control key, the first output of the first The section of the group control key is connected to the third inputs of all n control and control devices and the first output of the automatic reactor power controller, the second output of the first section of the group control key is connected to the fourth inputs of all n control and control devices, the second output of the automatic reactor power controller and the cathode of the diode, the anode of which is connected to the first input terminal, the second input terminal is connected to the control input of the first managed key, the first output of the second section of the key is group about the control is connected through the first managed key to the input of the first section of the group selection key, the input of the second section of which is connected to the second output of the second section of the group control key, the second input of the m-th control and control device for all m varying from 1 to n-1 ( 9), connected respectively to the second output of the monitoring and control device with number m + 1, the first input of the m-th monitoring and control device for m, varying from 2 to n (10), is connected respectively to the first output of the monitoring and control device with number m-1, for all m, varying from 1 to n (10), the outputs of the m-th monitoring and control device from third to fourteenth are connected respectively to the inputs from the first to twelfth of the m-th control signal generating device, the thirteenth and fourteenth inputs of which are connected to the outputs m of the second and first sections of the group selection key, each monitoring and control device contains at least first, second and third position sensors of the nuclear reactor control elements, first, second and third position monitoring units, the first and Majority blocks, from the first to the sixth circuit NOT, from the first to the sixth circuit AND, with the first, second and third position sensors of the nuclear reactor control elements connected to the first, second and third position control units, the first output of the first position control unit is connected via the first circuit is NOT with the ninth output of the monitoring and control device, the first output of the second position monitoring unit is connected via the second circuit is NOT with the tenth output of the monitoring and control device, the first output of the third block is The position monitoring is connected via the third circuit NOT to the eleventh output of the monitoring and control device, the fourth output of the first position monitoring unit is connected via the fourth circuit NOT to the twelfth output of the monitoring and control device, the fourth output of the second position monitoring unit is connected via the fifth circuit NOT to the thirteenth output of the monitoring device and control, the fourth output of the third position monitoring unit is connected via the sixth circuit NOT to the fourteenth output of the monitoring and control device, the third input of the unit to ontrol and control is connected to the second inputs of the first, second and third circuits And, the fourth input of the control and control unit is connected to the second inputs of the fourth, fifth and sixth circuits And, the first output of the control and control unit is connected to the output of the first majority block, the first, second and the third inputs of which are connected to the second outputs of the first, second and third position control units, respectively, the second output of the control and control unit is connected to the output of the second majority block, the first, second and third inputs of which are inenes with third outputs of the first, second and third position control units, outputs from the first to sixth circuits And are connected respectively to the outputs from the third to eighth control and control unit, the control signal generation device contains the first to sixth controlled keys, from the first to the sixth OR circuits, from the first to the sixth circuit And, from the first to the third blocks of the formation of control signals, the inputs of the device for generating control signals are connected first through the first managed key with the first input the first OR circuit, the second through the second managed key with the first input of the second OR circuit, the third through the third managed key with the first input of the third OR circuit, the fourth through the fourth managed key with the first input of the fourth OR circuit, the fifth through the fifth managed key with the first input of the fifth OR circuit, the sixth through the sixth key with the first input of the sixth OR circuit, the seventh with the first input of the first AND circuit, the eighth with the first input of the second AND circuit, the ninth with the first input of the third AND circuit, the tenth with the first the entrance of the fourth circuit s AND, the eleventh - with the first input of the fifth AND circuit, the twelfth - with the first input of the sixth AND circuit, the thirteenth - with the second inputs of the fourth, fifth and sixth OR circuits and the control inputs of the first, second and third managed keys, the fourteenth - with the second inputs of the first , the second and third OR circuits and the control inputs of the fourth, fifth and sixth controlled keys, the outputs of the OR circuits one through six are connected to the second inputs, respectively, from the first to the sixth circuits AND, the outputs of the circuits AND from the first through third are connected to the first inputs respectively from the first to the third blocks of generating control signals, the second inputs of which are connected respectively with the outputs of the fourth to third OR circuits (Technical project "Electrical Equipment Complex of the VVER-1000 (V-428) Reactor Tianwan NPP TAIK.500066.002 PZ", NPP VNIIEM, 2000).

The disadvantage of this device is the possibility of simultaneous upward movement of several groups of regulatory bodies when controlled by an automatic reactor power regulator. So, when the seventh and ninth groups of regulatory bodies are located at the top of the active zone, the eighth and tenth groups of regulatory bodies will simultaneously move upward using the “More” command.

The essence of the invention lies in the fact that in the control device for the actuator of a nuclear reactor, containing n control and control devices and n devices for generating control signals, where n is the number of groups of regulatory bodies of a nuclear reactor, taken, for example, for reactors of the VVER-1000 type equal to 10 , mode selection key, group control key, group selection key, voltage source, automatic reactor power controller, pressure sensor, neutron flux detector, diode, first and second input terminals, the first and second controlled keys, the outputs of the mode selection key are connected to the second - to the input of the first section of the group control key and the control input of the second managed key, the third - to the input of the reactor automatic power regulator, the first input of the first control and control device is connected to the input of the mode selection key, the output of the voltage source and the second input of the nth (tenth) monitoring and control device and through the second managed key with the input of the second section of the group control key, the first output of the first section and the group control key is connected to the third inputs of all n control and control devices and the first output of the reactor power automatic regulator, the second output of the first section of the group control key is connected to the fourth inputs of all n control and control devices, the second output of the reactor power automatic regulator and the cathode of the diode, the anode of which is connected to the first input terminal, the second input terminal is connected to the control input of the first managed key, the first output of the second section of the key group the control is connected through a second controlled key to the input of the first section of the group selection key, the input of the second section of which is connected to the second output of the second section of the group control key, the second input of the m-th control and control device for all m varying from 1 to n-1 (9 ), connected respectively to the second output of the monitoring and control device with the number m + 1, the first input of the mth monitoring and control device for m, varying from 2 to n (10), is connected respectively to the first output of the monitoring and control device with the number m -1, for all m, ISM varying from 1 to n (10), the outputs of the m-th monitoring and control device from the third to the fourteenth are connected respectively to the inputs from the first to the twelfth of the m-th control signal generating device, the thirteenth and fourteenth of which are connected to the outputs m of the second and first sections of the group selection key, each monitoring and control device comprises at least first, second and third position sensors of nuclear reactor control elements, first, second and third position monitoring units, first and second the first majority blocks, from the first to the sixth circuit of NOT, from the first to the sixth of circuit And, the first, second and third position sensors of the regulatory bodies of the nuclear reactor are connected respectively to the first, second and third position control blocks, the first output of the first position control block is connected through the first circuit is NOT with the ninth output of the monitoring and control device, the first output of the second position monitoring unit is connected via the second circuit is NOT with the tenth output of the monitoring and control device, the first output of the third control unit The position field is connected via the third circuit NOT to the eleventh output of the monitoring and control device, the fourth output of the first position monitoring unit is connected through the fourth circuit NOT to the twelfth output of the monitoring and control device, the fourth output of the second position monitoring unit is connected via the fifth circuit NOT to the thirteenth output of the monitoring device and control, the fourth output of the third position control unit is connected via the sixth circuit NOT to the fourteenth output of the control and management device, the first input of the control unit the role and control is connected to the third inputs of the first, second and third circuits AND, the second input of the control and control unit is connected to the third inputs of the fourth, fifth and sixth circuits And, the third input of the control and control unit is connected to the second inputs of the first, second and third circuits And , the fourth input of the control and management unit is connected to the second inputs of the fourth, fifth and sixth circuits AND, the first output of the control and management unit is connected to the output of the first majority block, the first, second and third inputs of which are connected to the second outputs, respectively of the first, second and third position control units, the second output of the control and management unit is connected to the output of the second majority unit, the first, second and third inputs of which are connected to the third outputs of the first, second and third position control units, outputs from the first to the sixth circuit And they are connected respectively to the outputs from the third to the eighth control and management unit, the control signal generation device contains the first to sixth controlled keys, from the first to the sixth circuit OR, from the first d according to the sixth AND circuit, from the first to the third control signal generating units, the inputs of the control signal generating device are connected first through the first managed key to the first input of the first OR circuit, the second through the second managed key with the first input of the second OR circuit, the third through the third managed key with the first input of the third OR circuit, the fourth through the fourth managed key with the first input of the fourth OR circuit, the fifth through the fifth managed key with the first input of the fifth OR circuit, the sixth through the sixth controlled to door with the first input of the sixth OR circuit, the seventh with the first input of the first AND circuit, the eighth with the first input of the second AND circuit, the ninth with the first input of the third AND circuit, the tenth with the first input of the fourth AND circuit, the eleventh with the first input of the fifth And, the twelfth - with the first input of the sixth AND circuit, the thirteenth - with the second inputs of the fourth, fifth and sixth OR circuits and the control inputs of the first, second and third managed keys, the fourteenth - with the second inputs of the first, second and third OR circuits and control inputs fourth, fifth and shess of the controlled keys, the outputs of the OR circuits from the first to the sixth are connected to the second inputs, respectively, from the first to the sixth circuits And, the outputs of the circuits And from the first to third are connected to the first inputs, respectively, from the first to third control signal generating units, the second inputs of which are connected respectively to the outputs from the fourth to third OR circuits, an additional group selection key is entered, the NOT circuit and the AND circuit, the first input terminal is connected via the NOT circuit to the first input of the And circuit, the second input of which is connected to the input of the automatic circuit reactor power regulator, and the output with the inputs of the first and second sections of the additional group selection key, the second, third and fourth outputs of the second section of the additional group selection key are connected to the fifth inputs of all control and control devices, the sixth inputs of the eighth, ninth and tenth control devices and controls are connected respectively to the second, third and fourth outputs of the first section of the additional group selection key, with an additional NOT circuit, the first and second are introduced into each control and management device I additional circuits AND and the first and second OR circuits, the inputs of the monitoring and control device are connected first - with the first input of the first additional circuit And, the second - with the first input of the second additional circuit And, the fifth - with the input of the additional circuit NOT, the sixth - with the second inputs of the first and second OR circuits, the output of the additional circuit AND is not connected to the second inputs of the first and second additional circuits AND, the output of the first additional circuit And is connected to the first input of the first circuit OR, the output of the second additional circuit And is connected to the first input of w swarm OR circuit, the output of the first OR circuit is connected to the second inputs of the first, second and third AND gates, the output of the second OR circuit is connected to the second inputs of the fourth, fifth and sixth circuits I.

Figure 1-5 shows a structural diagram of a control device for actuators of a nuclear reactor, figure 6 shows a structural diagram of a control and control device, and Fig.7 shows a structural diagram of a device for generating control signals.

The control device for executive mechanisms of a nuclear reactor (Figs. 1-5) contains n monitoring and control devices 1.1-1.n, where n is the number of groups of regulatory bodies of a nuclear reactor, which, for example, for VVER-1000 reactors is 10, a control device and control 1.m for m, varying from 1 to 10, contains inputs from the first 2.1.m through the sixth 2.6.m, outputs from the first 3.1.m through the fourteenth 3.14.m; additional group selection key 4; a group control key 5 with the input of the first section 6, the input of the second section 7, the first 8 and second 9 outputs of the first section, the first 10 and second 11 outputs of the second section; mode selection key 12 with the first (“Manual”), second (“Semi-automatic”) and third (“Automatic”) outputs; group selection key 13; voltage source 14; automatic reactor power controller 15; pressure sensor 16; neutron flux detector 17; Scheme And 18; Scheme NOT 19; diode 20; the first input terminal 21; second input terminal 22; the first 23 and second 24 managed keys that open when a single signal at the control input of the managed key; n control signal generating devices 25.1-25.n, where n is the number of groups of regulatory bodies of a nuclear reactor, which, for example, for VVER-1000 reactors is 10, control signal generating devices 25.m for m varying from 1 to 10, contains entrances from the first 26.1.m to the fourteenth 26.14.m.

The output of the voltage source 14 is connected to the input 5 of the mode selection key, with the first input 2.1.1 of the first monitoring and control device 1.1, the second input 2.2.n of the monitoring and control device n and through the second managed key 24 with the input 7 of the second section of the group control key 5 .

The outputs of the mode selection key 12 are connected to the second, with the input 6 of the first section of the group control key 5 and the control input of the second managed key 24, the third with the input of the automatic power regulator of the reactor 15 and the second input of circuit 18, the first input of which is connected to the output of circuit NOT 19 and the output is with the inputs of the first and second sections of the additional group selection key 4. The input of the circuit NOT 19 is connected to the first input terminal 21 and the anode of the diode 20.

The first output 8 of the first section of the group control key 5 is connected to the third inputs 2.3.1-2.3.n of all monitoring and control devices 1.1-1.n and the first output of the automatic reactor power controller, and the second output 9 of the first section of the group control key 5 is connected to the fourth inputs 2.4.1-2.4.n of all monitoring and control devices 1.1-1.n, the second output of the power regulator of the reactor 15 and the cathode of the diode 20.

The first 10 output of the second section of the group control key 5 is connected through the first managed key 23 to the input of the first section of the group selection key 13, and the second 11 output of the second section of the group control key 5 is connected to the input of the second section of the group selection key 13. Control input of the first managed key 23 connected to the second input terminal 22.

The outputs of the first section of the group selection key 13 are connected, respectively, the first - with the fourteenth input 26.14.1 of the first signal conditioning device 25.1, the output m for m, varying from 2 to 7 - with the fourteenth input 26.14.m of the m-th signal conditioning device 25.m , the eighth - with the fourteenth input 26.14.8 of the eighth signal conditioning device 25.8, the ninth - with the fourteenth input 26.14.9 of the ninth signal conditioning device 25.9, the tenth - with the fourteenth input 26.14.10 of the tenth signal conditioning device 25.10

The second, third and fourth outputs of the second section of the additional key for selecting groups 4 are connected to the fifth inputs 2.5.1-2.5.n of all monitoring and control devices 1.1-1.n. The second, third and fourth outputs of the first section of the additional selection key of groups 4 are connected to the sixth inputs 2.6.8, 2.6.9, 2.6.10 of the eighth, ninth and tenth control and management devices 1.8-1.10, respectively. The inputs of the first and second sections of the additional key select groups are connected to the output of the circuit And 18.

In each of the monitoring and control devices 1.m, where m varies from 2 to n, the first input 2.1.m is connected to the first output 3.1.m of the monitoring and control device 1.m-1, and in each of the monitoring and control devices 1 .m, where m varies from 1 to n-1, the second input 2.2.m is connected to the second output 3.1.m of the monitoring and control device 1.m + 1.

In each of the monitoring and control devices 1.m, where m varies from 1 to n, the outputs from the third 3.3.m through the fourteenth 3.14.m are connected respectively to the inputs from the first 3.1.m through the twelfth 3.12.m of the corresponding control signal generating device 25 .m.

Figure 1-5 adopted the following notation signals:

- PZ1 - the signal of the preliminary protection of the first kind;

- ПЗ2 - a signal of operation of preliminary protection of the second kind;

- M - “Less” team;

- B - the command "More";

- IN - signal from a voltage source;

- RFP - a ban signal on the automatic selection of groups of regulatory bodies;

- P8 - permission signal to select 8 groups;

- P9 - permission signal to select 9 groups;

- P10 - permission signal to select 10 groups;

- Br1-Br10 - the “More” command of manual control to the appropriate group of regulatory bodies;

- Mp1-Мр10 - “Less” manual command for the corresponding group of regulatory bodies;

- PV1-PV9 - signal "Intermediate position of the top" of the corresponding group;

- PN10-PN2 - signal "Intermediate position of the bottom" of the corresponding group;

- KB1.1-KB3.10 - signal of the final position of the top of the corresponding regulatory body in the corresponding group;

- KN1.1-KN3.10 - signal of the final position of the bottom of the corresponding regulatory body in the corresponding group;

-B1.1-B3.10 - the “More” command for the corresponding actuator in the corresponding group;

- M1.1-M3.10 - the “Less” command for the corresponding actuator in the corresponding group.

The monitoring and control device 1.m (Fig. 6) contains at least the first 27.1, second 27.2 and third 27.3 position sensors of the regulatory bodies of the nuclear reactor, the first 28.1, second 28.2 and third 28.3 position control units with outputs from the first to the fourth 29.1. 1-29.4.1, 29.1.2-29.4.2, 29.1.3-29.4.3, respectively, for position control blocks from the first 28.1 to the third 28.3, the first majority block 30 and the second majority block 31, implementing the “two out of three” logic , from the first 32.1 to the sixth 32.6 of the circuit NOT, from the first 33.1 to the sixth 33.6 of the circuit AND, the first additional circuit NOT 34, the first to a complete AND 35 circuit, a first OR 36 circuit, a second additional AND 37 circuit, a second OR 38 circuit.

The first 27.1, the second 27.2 and the third 27.3 position sensors of the regulatory bodies of the nuclear reactor are connected respectively to the first 28.1, second 28.2 and third 28.3 position control units.

The first output 29.1.1 of the first position control unit 28.1 is connected through the first circuit NOT 32.1 to the ninth output 3.9.m of the control and control device, the first output 29.1.2 of the second position control unit 28.2 is connected via the second circuit NOT 32.2 to the tenth output 3.10.m of the device control and management, the first output 29.1.3 of the third position control unit 28.3 is connected via the third HE 32.3 circuit with the eleventh output 3.11.m of the control and control device, the fourth output 29.4.1 of the first position control unit 28.1 is connected through the fourth HE 32.4 circuit with the twelfth by the output 3.12.m of the control and management device, the fourth output 29.2 of the second position control unit 28.2 is connected via the fifth circuit NOT 32.5 to the thirteenth output 3.13.m of the control and control device, the fourth output 29.4.3 of the third position control unit 28.3 is connected via the sixth circuit NOT 32.6 with the fourteenth exit 3.14.m of the control device.

The first, second and third inputs of the first majority block 30 are connected to the second outputs 29.2.1, 29.2.2 and 29.2.3 of the first 28.1, second 28.2 and third 28.3 position control blocks, respectively. The first, second and third inputs of the second majority block 31 are connected to the third outputs 29.3.1, 29.3.2 and 29.3.3 of the first 28.1, second 28.2 and third 28.3 position control blocks, respectively.

The inputs of the control and management device are connected to the first 2.1.m - with the first input of the first additional circuit And 35, the second input 2.2.m - with the first input of the second additional circuit And 37, the third input 2.3.m - with the first inputs of the first 33.1, second 33.2 and the third 33.3 AND circuit, the fourth input 2.4.m - with the first inputs of the fourth 33.4, fifth 33.5 and the sixth 33.6 circuit And, the fifth input 2.5.m - with the input of the additional circuit NOT 34, the sixth input 2.6.m - with the second inputs of the first 36 and second 37 circuits OR.

The output of the additional circuit NOT 34 is connected to the second inputs of the first 35 and second 37 additional circuits I. The output of the first additional circuit And 35 is connected to the first input of the first circuit OR 36, the output of which is connected to the second inputs of the first 33.1, second 33.2 and third 33.3 circuits I. The output of the second additional AND circuit 37 is connected to the first input of the second OR circuit 38, the output of which is connected to the second inputs of the fourth 33.4, fifth 33.5, and sixth 33.6 circuits I.

The output of the first majority block 30, the output of the second majority block 31, the outputs of circuits And from the first 33.1 to the sixth 33.6 are connected respectively to the outputs from the first 3.1.m to the eighth 3.8.m of the control and management device.

The control signal generation device 25.m (Fig. 7) contains at least the first 39.1 through sixth 39.6 controlled keys that open when a single signal is on the control input of the controlled key, from the first 40.1 through sixth 40.6 of the OR circuit, from the first 41.1 through sixth 41.6 Schemes And and from the first 42.1 to the third 42.3 blocks of formation of control signals.

The inputs of the control signal device are connected from the first 26.1.m to the sixth 26.6.m through the first 39.1 to the sixth 39.6 controlled keys, respectively, with the first inputs from the first 40.1 to the sixth 40.6 OR circuits, from the seventh 26.7.m to the twelfth 26.12.m - respectively the first inputs of AND circuits from the first 41.1 to the sixth 41.6, the thirteenth of 26.13.m - with the second inputs of the OR circuits from the fourth 40.4 to the sixth 40.6 and the control inputs of the managed keys from the first 39.1 to the third 39.3, the fourteenth 26.14.m - with the second inputs of the OR circuits the first 40.1 through the third 40.3 and the control inputs of controlled keys whose fourth to sixth 39.4 39.6.

The outputs of the controlled keys from the first 39.1 to the sixth 39.6 are connected respectively to the first inputs from the first 40.1 to the sixth of 40.6 OR circuits, the outputs of which are connected respectively to the second inputs from the first 41.1 to the sixth of 41.6 circuits I.

The outputs from the first 41.1 through the third 41.3 circuits AND are connected respectively to the first inputs from the first 42.1 to the third 42.3 control signal generating units, the second inputs of which are connected respectively with the outputs from the fourth 41.4 through the sixth 41.6 circuits I.

For VVER-1000 reactors, groups of regulatory bodies contain from six to eighteen regulatory bodies. In the drawings (Figs. 1-4), in each group, control equipment of three regulatory bodies is conventionally shown. The control equipment for the other triples is similar. In this case, the outputs of the first majority blocks of additional “triples” are connected to the first output 3.1.m, and the outputs of the second majority blocks of additional “triples” are connected to the second output 3.2.m of the monitoring and control device, which ensures the implementation of OR logic (wired OR) by signals corresponding majority blocks.

The control device of the actuator of a nuclear reactor operates as follows.

For VVER-1000 type reactors, the height of the reactor core and, accordingly, the controlled movement of the reactor regulatory body is 350 cm. When, for example, the first regulatory body of group m is located at the bottom of the reactor core at the fourth exit 29.4.1 of the first position control unit 28.1, a single the signal of the “bottom tip” of the SC, when this regulatory body is located at the top of the reactor core (at an altitude of 350 cm from the bottom of the core), a single signal appears at the first output 29.1.1 of the first position control unit 28.1 al "top tip" KV. In modern VVER-1000 reactor control systems, the formation of a single signal of the “intermediate top position" of the PV at the second output 29.2.1 of the first control unit 28.1 is also performed when the regulatory body is at the top of the reactor core, that is, simultaneously with the HF signal. The formation of a single signal of the "intermediate bottom position" of the PN at the third output 29.3.1 of the first control unit 28.1 is performed when the corresponding regulatory body is located at a height of 175 cm or lower from the bottom of the reactor core.

When the reactor is stopped, all regulatory bodies of the reactor are located at the bottom of the reactor core. Moreover, in all monitoring and control devices 1.1-1.n in all position monitoring units 28.1-28.3, at the third outputs 29.3.1-29.3.3 there is a single PN signal, and at the fourth outputs 29.4.1-29.4.3 there is a single signal KN and, accordingly, at the output of the second majority block 31, there is a single signal supplied to the second output 3.2.m of the corresponding monitoring and control device 1.m as a group signal of the intermediate position of the bottom of the group m - “PNm”.

.At the outputs of the circuits NOT from the fourth 32.4 to the sixth 32.6 and, respectively, at the outputs from the twelfth 3.12.m to the fourteenth 3.14.m - zero signals

.

In the middle position ("Semi-automatic") mode selection key 12 provides control of the actuators from the group control key 5 (from the first section of the key). When the group control key 5 is turned to the left position, a single signal “More” is generated at its output 8 from the voltage source 14, which is supplied to the first inputs 2.1.1-2.1.n of all control and control devices 1.1-1.n.

The formation of the “More” commands will occur only for actuators that move the regulatory bodies of the first group, since there is a single signal from voltage source 14 at the second input 2.1.1 of the control and management device 1.1, and control and control devices 1.1 at the fifth input 2.5.1 there is a zero signal from the second output of the second section of the additional group selection key 4, since at the second input of the circuit And 18 and, accordingly, at its output, input and outputs of the first and second sections of the additional group selection key 4 is a zero signal l. In this case, a single signal appears at the output of the circuit NOT 34, the output of the first additional circuit And 35, the first circuit OR 36 and, respectively, at the second inputs from the first 33.1 to the third 33.3 circuits And, at the first inputs of which there is a single signal from the third input 2.3.1 of the device control and management 1.1. In this case, at the outputs of the first 33.1, second 33.2 and third 33.3 circuits And and, accordingly, on the third 3.3.1, fourth 3.4.1 and fifth 3.5.1 outputs of the control and management device 1.1, single signals appear respectively B1.1, B2.1, B3 .1, which respectively enter the inputs from the first 26.1.1 to the third 26.3.1 of the device for generating control signals 25.1 and through closed keys from the first 39.1 to the third 39.3 and, respectively, from the first 40.1 to the third 40.3 of the OR circuit to the second inputs, respectively, from the first 41.1 according to the third 41.3 schemes I.

которые поступают соответственно на входы с седьмого 26.7.1 по девятый 26.9.1 устройства формирования сигналов управления 25.1 и далее соответственно на первые входы схем И с первой 41.1 по третью 41.3, с выхода которых единичные сигналы поступают на первые входы «Больше» соответственно блоков формирования сигналов управления с первого 42.1 по третий 42.3, обеспечивая движение вверх 1-3 регулирующих органов первой группы до достижения ими верха активной зоны.Until the first, second and third regulatory bodies of the first group reach the top of the active zone at the first 29.1.1-29.1.3 and second 29.2.1-29.2.3 outputs of the first 28.1, second 28.2 and third 28.3 control units of the control unit 1.1 - zero signal. At the same time, at the output of the first majority block 30 and, accordingly, at the first output 3.1.1 of the monitoring and control device 1.1, there is a zero signal. At the outputs of the circuits NOT from the first 32.1 to the third 32.3 and, respectively, at the outputs from the ninth 3.9.1 to the eleventh 3.11.1 - single signals

which are received respectively at the inputs from the seventh 26.7.1 to the ninth 26.9.1 of the control signal generation device 25.1 and then respectively to the first inputs of the I circuits And from the first 41.1 to the third 41.3, from the output of which single signals are sent to the first inputs “More”, respectively, of the forming units control signals from the first 42.1 to the third 42.3, providing upward movement of 1-3 regulatory bodies of the first group until they reach the top of the active zone.

When these regulatory bodies reach the top of the active zone, single signals KB and PV appear on the first 29.1.1-29.1.3 and second 29.2.1-29.2.3 outputs of the first 28.1, second 28.2, and third 28.3 position control units of the first control and control device, respectively 1.1, which leads to the appearance of a single signal at the output of the first majority block 30 and, accordingly, a single signal PV1 at the first output 3.1.1 of the first monitoring and control device 1.1. In addition, the signals at the outputs of the circuits NOT from the first 32.1 to the third 32.3 and, accordingly, at the outputs from the ninth 3.9.1 to the eleventh of the first monitoring and control device 1.1 become zero; as a result, the output signals of the circuits And from the first 41.1 through the third 41.3 of the formation device become zero control signals 25.1.

The movement of the first - third regulatory bodies of the first group up stops.

A single signal PV1 from the first output 3.1.1 of the first monitoring and control device 1.1 is fed to the first input 2.1.1 of the second monitoring and control device 1.2. If the “More” command is saved at the third input 2.3.2 of the second monitoring and control device 1.2, then the regulatory bodies of the second group are moved upward with the formation of signals in the monitoring and control device 1.2 and in the control signal generation device 25.2 as described above for the device control and management 1.1 and devices for generating control signals 25.1.

When the “More” command is saved after regulatory authorities of the second group reach KB position, the regulatory bodies of the third and subsequent groups move alternately up to the tenth, and the regulatory bodies of only one group move up. The upward movement of regulatory bodies of the tenth group will cease when they reach the position of ToR.

When moving the group control key 5 to the right position, its output 9 receives a single signal “Less” from the voltage source 14, which then goes to the fourth inputs 2.4.1-2.4.10 of all monitoring and control devices 1.1-1.10, and to the second input 2.2.10 monitoring and control device 1.10 receives a single signal from the output of voltage source 14. In the monitoring and control device 1.10, single signals appear at the outputs of the fourth 30.4, fifth 30.5 and sixth 30.6 circuits I, and on the sixth 3.6.10, seventh 3.7.10 and the eighth 3.8.10 outputs of the control device and pack Messages 1.10 appear, respectively, the commands “Less” M1.10, M2.10 and M3.10, which are received respectively at the inputs from the fourth 26.4.1 to the sixth 26.6.1 of the device for generating control signals 25.10 and through closed keys from the fourth 39.4 to the sixth 39.6 and, accordingly, from the fourth 40.4 to the sixth 40.6 circuits OR to the second inputs, respectively, from the fourth 41.4 to the sixth 41.6 circuits I.

Until the first, second and third regulatory bodies reach the tenth group of the bottom of the active zone at the fourth 29.4.1-29.4.3 outputs of the first 28.1, second 28.2 and third 28.3 control units of the position of the monitoring and control device 1.10 - a zero signal, and at the outputs from the twelfth 3.12 .10 to the fourteenth 3.14.10 of the monitoring and control device 1.10 - single signals that enter the inputs from the tenth 10/26/10 to the twelfth 12/26/10 of the device for generating control signals 25.10 and then respectively to the first inputs of the circuits And from the fourth 41.4 to the sixth 41.6, with out and which a single signal is supplied respectively to the second inputs of the control signal generation blocks from the first 42.1 to the third 42.3, providing a downward movement of 1-3 regulatory bodies of the tenth group until they reach the bottom of the active zone and the appearance of single signals at the fourth 29.4.1-29.4.3 outputs the first 28.1, second 28.2 and third 28.3 control units of the position of the control and control device 1.10, which leads to the removal of single signals from the second inputs of the control signal generation blocks from the first 42.1 to the third 42.3 of the device control signals 25.10 and the cessation of downward movement of 1-3 regulatory bodies of the tenth group.

In the process of moving down 1-3 regulatory bodies of the tenth group after they reach a position of 175 cm from the bottom of the active zone, a third signal appears on the third 29.3.1-29.3.3 outputs of the first 28.1, second 28.2 and third 28.3 control units of the control unit 1.10 , which leads to the appearance of a single signal at the output of the second majority block 31 and, accordingly, to the appearance of a single signal PN10 at the second output 3.2.10 of the monitoring and control device 1.10

At the same time, when the “Less” command is saved, simultaneous downward movement of the regulatory bodies of the tenth and ninth groups is ensured until the bottom of the active zone is reached by the regulatory bodies of the tenth group. After that, the downward movement is carried out by the regulatory bodies of the two subsequent groups, that is, the ninth and eighth, and then the seventh and sixth and so on.

Similarly, sequential movement of groups of regulatory bodies is carried out downstream of the preliminary protection signal of the first kind ПЗ1, which arrives at the first input terminal 21 from the reactor emergency and preventive protection system.

When the mode selection key 12 is set to the third position (“Automation”), the automatic power regulator of the reactor 15 is turned on in the automatic control mode, which generates the “More” or “Less” commands on its first and second outputs, respectively.

When installing an additional key to select groups 4 in the first (left according to the scheme) position on the second, third and fourth outputs of the second section of this key and, accordingly, on the fifth inputs 2.5.1-2.5.10 of the monitoring and control devices 1.1-1.n - zero signal . In this case, the control of the actuators of the reactor by the commands “More” and “Less” from the automatic power regulator of the reactor 15 is carried out similarly to the control by the commands “More” or “Less” from the first section of the group control key 5 with the same automatic selection of control groups for control and transmission controls to other groups as described above.

Since at the third position of the mode selection key 12 at the control input of the second controlled key 24 there is a zero signal closing this key, there is voltage at the input 7 of the second section of the group control key 5. In this case, the operator using this key can control the actuators of one of the groups of regulatory bodies without transferring control to another group. The choice of a managed group is carried out using the key group selection 13.

If there is a pre-protection actuation signal of the second kind of ПЗ2 at the second input terminal 22, the first controlled key 23 is opened, prohibiting the passage of the “More” command from the second section of the group control key 5. When the preliminary protection is triggered, the operation of the reactor’s emergency and preventive protection is also provided preliminary protection of the second kind.

The “More” command from the corresponding output of the first section of the group selection key 13 arrives at the fourteenth input 26.14.m of the control signal generation device 25.m of the selected group, providing upward movement of the regulatory bodies of the selected group until they reach the top of the active zone. In this case, as a result of the opening of the controlled keys from the fourth 39.4 to the sixth 39.6, possible “Less” commands from the reactor power regulator 15 are blocked.

Moreover, the transfer of motion to another group after reaching the top of the active zone does not occur.

The Less command from the corresponding output of the second section of the group selection key 13 is sent to the thirteenth input 26.13.m of the control signal generation device 25.m of the selected group, providing a downward movement of the regulatory bodies of the selected group until they reach the bottom of the active zone. In this case, as a result of opening the controlled keys from the first 39.1 to the third 39.3, the possible “More” commands from the reactor power regulator 15 are blocked.

Moreover, after reaching a position of 175 cm from the bottom of the active zone by the regulatory bodies of group m, the downward movement of the regulatory bodies of group m-1 does not occur.

When the additional group selection key 4 is installed in the second position, at the second output of the first section of this key and, accordingly, at the sixth input 2.6.8 of the eighth monitoring and control device 1.8, there is a single signal, and at the second, third and fourth outputs of the second section of this key and, respectively, fifth inputs 2.5.1-2.5.10 of all control and management devices - also a single signal.

At the same time, at the output of the OR circuits 36 and 38 of only the eighth monitoring and control device 1.8, there is a single signal, and in the remaining control and control devices at the output of these circuits there is a zero signal.

According to the commands “More” or “Less” from the automatic power controller 15, the corresponding commands are generated in the control and control device 1.8 and the device for generating control signals 25.8 and the regulatory bodies of only the eighth group are moved.

When the additional group selection key 4 is installed in the third position, at the third output of the first section of this key and, accordingly, at the sixth input 2.6.9 of the ninth monitoring and control device 1.9, there is a single signal, and at the second, third and fourth outputs of the second section of this key and, respectively, fifth inputs 2.5.1-2.5.10 of all control and management devices - also a single signal.

At the same time, at the output of OR circuits 36 and 38 of only the ninth monitoring and control device 1.9, there is a single signal, and in the remaining monitoring and control devices at the output of these circuits there is a zero signal.

According to the commands “More” or “Less” from the automatic power regulator 15, the corresponding commands are generated in the control and control device 1.9 and the device for generating control signals 25.9 and the regulatory bodies of only the ninth group are moved.

When an additional key for selecting groups 4 is set to the fourth position, at the fourth output of the first section of this key and, accordingly, at the sixth input 2.6.10 of the tenth control and control device 1.10, there is a single signal, and at the second, third and fourth outputs of the second section of this key and, respectively, fifth inputs 2.5.1-2.5.10 of all control and management devices - also a single signal.

At the same time, at the output of OR circuits 36 and 38 of only the tenth monitoring and control device 1.10, there is a single signal, and in the remaining monitoring and control devices at the output of these circuits there is a zero signal.

According to the commands “More” or “Less” from the automatic power regulator 15, the corresponding commands are generated in the control and control device 1.10 and the device for generating control signals 25.10 and the regulatory bodies of only the tenth group are moved.

If the automatic power regulator of the reactor 15 is disconnected from operation or when the preliminary protection of the first-kind reactor PZ1 is triggered at the output of circuit I 18 and, respectively, the inputs and outputs of both sections of the additional key for selecting groups 4, a zero signal. Accordingly, a zero signal at the fifth and sixth inputs of all monitoring and control devices 1.1-1.10.

This ensures the movement of regulatory bodies down groups in the sequence discussed above, taking into account group PN signals.

The signal PZ1 also arrives at the input of the power regulator of the reactor 15 (not shown), prohibiting the formation of the controller of the power of the reactor 15 output commands during the action of PZ1.

Compared with the prototype, it is possible to expand the functionality of the device by providing the ability to control from the reactor power regulator the regulatory bodies of one of the groups of groups 8-10, which is useful in violation of the regulatory sequence of movement of the groups, leading to the possibility of simultaneous movement up more than one group of regulatory reactor organs.

Claims (1)

A control device for the executive mechanism of a nuclear reactor containing n control and control devices and n control signal generation devices, where n is the number of groups of regulatory bodies of a nuclear reactor, taken, for example, for VVER-1000 reactors as 10, mode selection key, group control key , group selection key, voltage source, automatic reactor power controller, pressure sensor, neutron flux detector, diode, first and second input terminals, first and second controlled keys, key outputs the mode selection connector is connected to the second with the input of the first section of the group control key and the control input of the second controlled key, the third with the input of the reactor automatic power regulator, the first input of the first control and control device is connected to the input of the mode selection key, the voltage source output and the second input of the nth (tenth) control and management device and through the second managed key with the input of the second section of the group control key, the first output of the first section of the group control key is connected to a third with the inputs of all n control and control devices and the first output of the reactor power automatic regulator, the second output of the first section of the group control key is connected to the fourth inputs of all n control and control devices, the second output of the reactor power automatic regulator and the cathode of the diode, the anode of which is connected to the first input terminal, the second input terminal is connected to the control input of the first managed key, the first output of the second section of the group control key is connected through the second managed key with the input of the first section of the group selection key, the input of the second section of which is connected to the second output of the second section of the group control key, the second input of the mth monitoring and control device for all m varying from 1 to n-1 (9) is connected respectively to the second output monitoring and control devices with the number m + 1, the first input of the mth monitoring and control device for m, varying from 2 to n (10), is connected respectively to the first output of the monitoring and control device with the number m-1 for all m changing from 1 to n (10), outputs of the m-th control device For the third and fourteenth control and control are connected respectively to the inputs from the first to twelfth m-th device of the formation of control signals, the thirteenth and fourteenth inputs of which are connected to the outputs m of the second and first sections of the group selection key, each control and control device contains at least least, the first, second and third position sensors of the regulatory bodies of a nuclear reactor, the first, second and third blocks of position control, the first and second majority blocks, from the first to the sixth circuit NOT, from the first to the sixth circuit AND, with the first, second and third position sensors of the regulatory elements of the nuclear reactor connected respectively to the first, second and third position control units, the first output of the first position control unit is connected via the first circuit NOT to the ninth output of the monitoring and control device, the first output of the second position control unit is connected via a second circuit NOT to the tenth output of the monitoring and control device, the first output of the third position control unit is connected via a third circuit NOT to one the seventeenth output of the monitoring and control device, the fourth output of the first position monitoring unit is connected via the fourth circuit NOT to the twelfth output of the monitoring and control device, the fourth output of the second position monitoring unit is connected via the fifth circuit NOT to the thirteenth output of the monitoring and control device, fourth output of the third monitoring unit the position is connected via the sixth circuit NOT to the fourteenth output of the monitoring and control device, the first input of the monitoring and control unit is connected to the third inputs of the howling, the second and third circuits And, the second input of the control and management unit is connected to the third inputs of the fourth, fifth and sixth circuits And, the third input of the control and management unit is connected to the second inputs of the first, second and third circuits And, the fourth input of the control and management connected to the second inputs of the fourth, fifth and sixth circuits AND, the first output of the control and management unit is connected to the output of the first majority block, the first, second and third inputs of which are connected to the second outputs of the first, second and third blocks respectively role of the position, the second output of the control and management unit is connected to the output of the second majority block, the first, second and third inputs of which are connected to the third outputs of the first, second and third position control units, the outputs from the first to the sixth circuits And are connected respectively to the outputs from the third according to the eighth control and management unit, the control signal generation device contains first through sixth controlled keys, from the first through sixth OR circuit, from the first through sixth AND circuit, from the first through third form blocks control signals, the inputs of the control signal generation device are connected through the first managed key to the first input of the first OR circuit, the second through the second managed key to the first input of the second OR circuit, the third through the third managed key with the first input of the third OR circuit, the fourth through the fourth controlled the key with the first input of the fourth OR circuit, the fifth through the fifth managed key with the first input of the fifth OR circuit, the sixth through the sixth managed key with the first input of the sixth OR circuit, the seventh with the first input the house of the first circuit And, the eighth with the first input of the second circuit And, the ninth with the first input of the third circuit And, the tenth with the first input of the fourth circuit And, the eleventh with the first input of the sixth circuit And, the thirteenth with the second inputs of the fourth , fifth and sixth OR circuits and control inputs of the first, second and third controlled keys, fourteenth with second inputs of the first, second and third OR circuits and control inputs of the fourth, fifth and sixth controlled keys, OR circuits outputs from the first to the sixth are connected to the second inputs, respectively, from the first to the sixth AND circuits, the outputs of the AND circuits from the first to the third are connected to the first inputs, respectively, from the first to the third control signal generating units, the second inputs of which are connected respectively to the outputs from the fourth to third OR circuits, characterized in that an additional group selection key is entered into the device, the NOT circuit and the AND circuit, the input terminal is connected via the NOT circuit to the first input of the And circuit, the second input of which is connected to the input of the reactor’s automatic power regulator, and the output is with the inputs of the first and second sections of the additional group selection key, the second, third and fourth outputs of the second section of the additional group selection key are connected to the fifth inputs of all monitoring and control devices, the sixth inputs of the eighth, ninth and tenth monitoring and control devices are connected to the second, third and the fourth outputs of the first section of the additional group selection key, with an additional NOT circuitry introduced into each monitoring and control device, the first and second additional circuits AND and the first and W paradise of the OR circuit, the inputs of the monitoring and control device are connected first to the first input of the first additional circuit AND, the second to the first input of the second additional circuit AND, the fifth to the input of the additional circuit NOT, the sixth second inputs of the first and second, OR circuits, the output of the additional circuit is NOT connected with the second inputs of the first and second additional circuits AND, the output of the first additional circuit AND is connected to the first input of the first OR circuit, the output of the second additional circuit And is connected to the first input of the second OR circuit, the output of the first circuit OR ene with the second inputs of the first, second and third AND gates, the output of the second OR circuit is connected to the second inputs of the fourth, fifth and sixth circuits I.

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