CN218727677U - Nuclear power station nuclear island low-voltage alternating-current distribution board test device - Google Patents
Nuclear power station nuclear island low-voltage alternating-current distribution board test device Download PDFInfo
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- CN218727677U CN218727677U CN202222598416.0U CN202222598416U CN218727677U CN 218727677 U CN218727677 U CN 218727677U CN 202222598416 U CN202222598416 U CN 202222598416U CN 218727677 U CN218727677 U CN 218727677U
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Abstract
The application discloses a nuclear island low-voltage alternating-current distribution board testing device for a nuclear power station, which comprises a power supply module, a node measuring module and a short-circuit module, wherein the power supply module is respectively and electrically connected with a switching-off signal and a switching-on signal of a distribution board main control room, the node measuring module is respectively and electrically connected with a fault signal of the distribution board, an operation signal of a contactor and a universal meter, and the short-circuit module is respectively and electrically connected with a valve full-on signal and a valve full-off signal of the distribution board; the power supply module is used for simulating an opening signal or a closing signal matched with the test type, the node measuring module is used for conducting connection or disconnection test on an operation signal of the contactor and a fault signal of the distribution board, and the short-circuit module is used for conducting short circuit on a valve full-opening signal or a valve full-closing signal of the distribution board matched with the test type. The secondary terminal block has the advantages that multiple operations such as wiring, node changing, short-circuit connection of short-circuit wires and the like on the secondary terminal block are avoided, maintenance time is shortened, and maintenance efficiency and maintenance accuracy are improved.
Description
Technical Field
The utility model belongs to the technical field of the nuclear island low pressure AC distribution board is experimental, concretely relates to nuclear power station nuclear island low pressure AC distribution board test device.
Background
The overhaul of the nuclear island low-voltage alternating-current distribution board of the nuclear power station is an important component of the overhaul work of the nuclear power station, most of equipment carried at the downstream of the nuclear island low-voltage alternating-current distribution board is important equipment, so the overhaul of the nuclear island low-voltage alternating-current distribution board is generally arranged during the shutdown and refueling overhaul of a reactor, which causes a great amount of overhaul work of the low-voltage alternating-current distribution board during the overhaul of a unit, and the overhaul work of the distribution board has more contents and short construction period, thereby becoming the key point and the difficulty of the overhaul work each time.
In the low voltage AC distribution board maintenance work, need to supply power with the control circuit of distribution board, carry out various experiments to the distribution board in order to verify the integrity of distribution board function, drawer switch operation test has been contained therein, drawer switch operation test is the main part of distribution board test work, has approximately occupied whole test work 50% work load, in drawer switch's operation test, according to the operation test type, need carry out the power access operation on the secondary terminal row of distribution board many times, measure the break-make condition of contact and carry out the contact short circuit operation.
The method comprises the steps of connecting corresponding interfaces on a secondary terminal row to direct-current voltage of a test power supply to simulate a remote opening and closing signal according to operation test types, using a universal meter to measure connection point on and off of the corresponding interfaces on the secondary terminal row, using a short-circuit wire to short-circuit the corresponding interfaces on the secondary terminal row, and possibly performing different operations on different operation test types. Every drawer switch need carry out multiple test, therefore the operation such as power access, survey contact, short circuit need be carried out many times, repetitious on drawer switch's secondary terminal row to the testing personnel, because of the restriction in space, these operations are mainly accomplished by one person, need be equipped with two people in addition and carry out the auxiliary operation, and this not only makes maintenance efficiency low, in operation process, very easily takes place the short circuit moreover, and the mistake is bumped, and the misconnection measures the condition such as inaccurate.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a nuclear power station nuclear island low pressure alternating current distribution board test device, main aim at solve the experimental maintenance of drawer switch operation of present distribution board inefficiency, take place the short circuit easily, the mistake is bumped, the mistake connects, measures unsafe problem.
In order to solve the problems, the application provides a test device for a nuclear island low-voltage alternating current distribution board of a nuclear power station, which comprises a power supply module, a node measuring module and a short-circuit module, wherein,
the output end of the power supply module is respectively and electrically connected with a switching-off signal input end and a switching-on signal input end of a distribution board main control chamber, the input end of the node measurement module is respectively and electrically connected with an operation signal output end of a contactor of the distribution board and a fault signal output end of the distribution board, the output end of the node measurement module is electrically connected with the input end of a multimeter, and the input end of the short-circuit module is respectively and electrically connected with a valve full-on signal output end and a valve full-off signal output end of the distribution board;
the power module is used for simulating a switching-off signal and a switching-on signal matched with a distribution board main control chamber, the node measuring module is used for transmitting an operation signal of a distribution board contactor matched with a test type and a fault signal of the distribution board to a universal meter so as to carry out a communication test or a disconnection test of the operation signal of the contactor and the fault signal of the distribution board, and the short circuit module is used for carrying out short circuit on a valve full-opening signal of the distribution board matched with the test type and carrying out short circuit on a valve full-closing signal of the distribution board matched with the test type.
In an embodiment of the present invention, optionally, the power supply module includes a power supply switching unit, a power supply amplitude display unit, and a switching-on/off selection unit, wherein,
the output end of the power supply switching unit is electrically connected with the input end of the power supply amplitude display unit and the input end of the switching-on/switching-off selection unit respectively, and the output end of the switching-on/switching-off selection unit is electrically connected with the switching-off signal input end and the switching-on signal input end of the switchboard main control chamber respectively.
In an embodiment of the present invention, optionally, the input terminal of the power source amplitude display unit comprises a positive input terminal and a negative input terminal, the power source switching unit comprises a first battery set, a second battery set, a power source switch and a negative output interface, wherein,
the positive terminal of the first battery pack is respectively electrically connected with the negative terminal of the second battery pack and the first selection input end of the power supply changeover switch, the positive terminal of the second battery pack is electrically connected with the second selection input end of the power supply changeover switch, the output end of the power supply changeover switch is respectively electrically connected with the positive input end of the power supply amplitude display unit and the input end of the switching-on/off unit, the negative terminal of the first battery pack is respectively electrically connected with the input end of the negative output interface and the negative input end of the power supply amplitude display unit, and the output end of the negative output interface is respectively electrically connected with the switching-off signal input end and the switching-on signal input end.
In an embodiment of the present invention, optionally, the switching-off and switching-on selecting unit includes a switching-off button, a switching-on button, a switching-off output interface and a switching-on output interface, wherein,
the first end of the opening key is electrically connected with the output end of the power supply switching unit, the second end of the opening key is electrically connected with the first end of the closing key, the second end of the closing key is electrically connected with the input end of the opening output interface, and the output end of the opening output interface is electrically connected with the opening signal input end;
the third end of the switching-on key is electrically connected with the output end of the power supply switching unit, the fourth end of the switching-on key is electrically connected with the third end of the switching-off key, the fourth end of the switching-off key is electrically connected with the input end of the switching-on output interface, and the output end of the switching-on output interface is electrically connected with the switching-on signal input end.
In an embodiment of the present invention, optionally, the separating button and the closing button are interlocked.
In an embodiment of the present invention, optionally, the power supply amplitude display unit is a voltmeter.
In one embodiment of the present invention, optionally, the node measurement module comprises a common input interface, a plurality of node input interfaces, a plurality of node buttons, a node output interface, and a common output interface, wherein,
the input end of the public input interface is respectively electrically connected with the operation signal output end of a contactor of the distribution board and the fault signal output end of the distribution board, the output end of the public input interface is electrically connected with the input end of the public output interface, the output end of the public output interface is electrically connected with the input end of the multimeter, the input end of each node input interface is electrically connected with the operation signal output end of the contactor of the distribution board and the fault signal output end of the distribution board, the output end of each node input interface is electrically connected with the first end of one node key, the second end of each node key is electrically connected with the input end of the node output interface, and the output end of the node output interface is electrically connected with the input end of the multimeter.
In an embodiment of the present invention, optionally, the shorting module comprises a plurality of sets of shorting paths, each set of shorting paths comprising a first input interface, a second input interface and a shorting button, wherein,
the input end of the first input interface is electrically connected with the valve full-on signal output end or the valve full-off signal output end of the distribution board, the output end of the first input interface is electrically connected with the first end of the short-circuit key, the input end of the second input interface is electrically connected with the valve full-on signal output end or the valve full-off signal output end of the distribution board, and the output end of the second input interface is electrically connected with the second end of the short-circuit key.
In an embodiment of the present invention, optionally, the device further comprises a housing, and the power module, the node measurement module and the short circuit module are all disposed in the housing.
The utility model discloses an in the embodiment, optionally, be equipped with display panel on the casing, the last sign that is equipped with of display panel.
The beneficial effect in this application: the utility model provides a pair of nuclear power station nuclear island low pressure AC distribution board test device, the terminal that need operate on arranging the secondary terminal passes through the connecting wire and causes on the test device, through the operation on the test device, realize with power signal, the node measurement, functions such as signal short circuit, wiring many times on arranging the secondary terminal, trade the node, operation such as short circuit line short circuit, avoided making a round trip to repeat the operation and the mistake that brings on arranging the secondary terminal bumps, the short circuit, add risks such as wrong signal, the repair time has been shortened, the maintenance efficiency and the maintenance rate of accuracy have been improved.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural connection diagram of a nuclear island low-voltage ac distribution board testing device of a nuclear power plant according to an exemplary embodiment of the present invention;
fig. 2 is a schematic diagram of a circuit connection of a power module of a testing apparatus for a nuclear island low-voltage ac distribution board of a nuclear power plant according to an exemplary embodiment of the present invention;
fig. 3 is a schematic circuit connection diagram of a node measurement module of a nuclear island low-voltage ac distribution board testing apparatus according to an exemplary embodiment of the present invention;
fig. 4 is a schematic circuit connection diagram of a short-circuit module of a nuclear power station nuclear island low-voltage alternating current switchboard testing device according to an exemplary embodiment of the present invention.
Fig. 5 is a front view of a display panel of a testing apparatus for a nuclear island low-voltage ac distribution board of a nuclear power plant according to an exemplary embodiment of the present invention.
In the figure: 12-power supply module, 14-node measuring module, 16-short-circuit module, 121-first battery pack, 122-second battery pack, 123-power supply changeover switch, 124-negative output interface, 125-opening key, 126-closing key, 127-opening output interface, 128-closing output interface, 129-voltmeter, 141-common input interface, 142-node input interface, 143-node key, 144-node output interface, 145-common output interface, 161-first input interface, 162-short-circuit key, 163-second input interface, 22-switchboard master control room, 24-switchboard.
Detailed Description
For overcoming the defect among the prior art, the utility model provides a nuclear power station nuclear island low pressure AC distribution board test device. In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail with reference to the drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In one embodiment, as shown in fig. 1, a nuclear island low-voltage ac distribution board testing apparatus for a nuclear power plant is provided, which includes a power module 12, a node measuring module 14 and a shorting module 16, wherein an output terminal of the power module 12 is electrically connected to a switching-off signal input terminal and a switching-on signal input terminal of a distribution board main control room 22, an input terminal of the node measuring module 14 is electrically connected to an operation signal output terminal of a contactor of a distribution board 24 and a fault signal output terminal of the distribution board 24, an output terminal of the node measuring module 14 is electrically connected to an input terminal of a multimeter, and an input terminal of the shorting module 16 is electrically connected to a valve full-on signal output terminal and a valve full-off signal output terminal of the distribution board 24; the power supply module 12 is used for simulating a switching-off signal and a switching-on signal matched with a main control room of the distribution board, the node measuring module 14 is used for transmitting an operation signal of a contactor of the distribution board matched with a test type and a fault signal of the distribution board to a universal meter so as to carry out a connection test or a disconnection test of the operation signal of the contactor and the fault signal of the distribution board, and the short-circuit module 16 is used for carrying out short-circuit on a valve full-opening signal of the distribution board matched with the test type and carrying out short-circuit on a valve full-closing signal of the distribution board matched with the test type.
Particularly, with the power supply terminal on the secondary terminal row, the operation signal terminal of contactor, the fault signal terminal of distribution board, valve full-open signal terminal and valve full-close signal terminal pass through the connecting wire and are connected to on the test device that this application provided, operate the test device that this application provided, realize power signal, node measurement and short circuit operation, need not to rewind again, trade operations such as node, avoided original wiring that need go up a lot of on the secondary terminal row, trade the node, operations such as short-circuit wiring short circuit, the mistake of having avoided originally making a round trip to operate repeatedly and bring on the secondary terminal row bumps, the short circuit, add risks such as wrong signal.
In one embodiment, the two ends of the connecting line are in a pin type design, and the connecting line is connected and disconnected in a plugging mode.
Compared with the prior art, the utility model provides a pair of nuclear power station nuclear island low pressure AC distribution board test device, the terminal that need operate on arranging the secondary terminal passes through the connecting wire and causes on the test device, through the operation on the test device, realize with power signal, the node is measured, functions such as signal short circuit, wiring many times on arranging the secondary terminal, trade the node, short-circuit line short circuit etc. are operated, avoided making a round trip to operate repeatedly and the mistake that brings on arranging the secondary terminal bumps, the short circuit, add risks such as wrong signal, the repair time has been shortened, maintenance efficiency and maintenance accuracy have been improved.
In one embodiment, the power module 12 includes a power switching unit, a power amplitude display unit, and a switching-on/off selection unit, wherein an output terminal of the power switching unit is electrically connected to an input terminal of the power amplitude display unit and an input terminal of the switching-on/off selection unit, respectively, and an output terminal of the switching-on/off selection unit is electrically connected to a switching-off signal input terminal and a switching-on signal input terminal of the distribution board main control chamber, respectively.
Specifically, the main components of the power module are a power switching unit, a power amplitude display unit and a switching-on/off selection unit. The power supply switching unit outputs 24V or 48V direct-current power supply to the switching-on and switching-off selection unit according to selection, the switching-on and switching-off selection unit outputs a switching-off signal or a switching-on signal according to a switching-on and switching-off selection key, and the switching-on and switching-off signal or the switching-on signal cannot be selected simultaneously.
In the existing method, a 650 test power supply provides a direct-current power supply, and because the output voltage is adjusted by rotating a knob on the 650 test power supply, and the knob is lack of a display part for the output voltage, the situation that the change of the output voltage is difficult to discover due to mistaken touch of the knob can occur in the working process, therefore, a power supply amplitude display unit is arranged between the output end of a power supply change-over switch and the negative electrode of the power supply, the selected power supply voltage grade is displayed, and the power supply amplitude display unit can be used for prompting whether the electric quantity of a lithium battery pack is sufficient or not.
In one embodiment, as shown in fig. 2, the input end of the power amplitude display unit includes a positive input end and a negative input end, the power switching unit includes a first battery pack 121, a second battery pack 122, a power switch 123 and a negative output interface 124, wherein the positive end of the first battery pack 121 is electrically connected to the negative end of the second battery pack 122 and the first selection input end of the power switch 123, the positive end of the second battery pack 122 is electrically connected to the second selection input end of the power switch 123, the output end of the power switch 123 is electrically connected to the positive input end of the power amplitude display unit and the input end of the brake switching-on/off unit, the negative end of the first battery pack 121 is electrically connected to the input end of the negative output interface 124 and the negative input end of the power amplitude display unit, and the output end of the negative output interface 124 is electrically connected to the switching-off signal input end and the switching-on signal input end, respectively.
Different from 650 test power supplies, this application adopts dry storage battery, and dry storage battery sets up in the battery box, is established ties by a plurality of 12V dry battery and forms, can provide two kinds of DC power supply of required fixed 24VDC or 48VDC according to the actual on-the-spot, can directly use, need not to adjust, effectively avoided the problem of the voltage change that probably takes place when original on-the-spot use 650 test power supplies, satisfy the demand of on-the-spot to different voltage class power supplies completely, and convenient simple. The original heavy 650 test power supply needing an external working power supply is changed into a flexible and light dry battery box, so that the portable multifunctional power supply is small in size, light in weight, convenient to carry and wider in regional applicability, and the requirement that a 220VAC power supply interface required by a 650 working power supply needs to be arranged nearby an original operation site is avoided.
In one embodiment, the dry battery is a rechargeable dry battery, and when the battery is low, the availability of the power supply can be maintained by charging the dry battery.
The output voltage of the direct-current power supply is fixed into two required voltage values, the required direct-current voltage is selected through the power supply changeover switch according to the difference of the unit, the link that the output voltage needs to be adjusted before the original 650 test power supply is used is saved, and the risk that the output voltage is changed because the output voltage adjusting knob of the 650 test power supply is mistakenly touched in the using process can be effectively prevented.
Specifically, the power supply component is mainly characterized in that 4 groups of lithium batteries are connected in series to form a 48VDC power supply, a tap is led out from the middle position of the lithium battery groups connected in series to form a 24VDC power supply, the connection of the two power supplies is respectively led to a first selection input end and a second selection input end of a power supply change-over switch, output voltage is selected through the change-over switch, in design, only one of the two voltages can be selected, the two voltage outputs cannot be simultaneously selected, when the power supplies are not required to be connected, the change-over switch is arranged at the middle position, and an internal power supply loop is disconnected. The power supply selected by the selector switch enters the switching-on/switching-off selection unit, a positive electrode signal of the power supply is finally connected to a switching-on signal output interface and a switching-off signal output interface of the switching-on/switching-off selection unit, and a negative electrode output interface is a public end and is also a negative electrode of the power supply; the switching-on signal output interface and the switching-off signal output interface are red in color, are marked as the positive pole of a power supply, the negative pole output interface is blue, are marked as the negative pole of the power supply, and respectively correspond to the 1#, 2#, and 3# wiring terminals on the secondary terminal row.
In one embodiment, as shown in fig. 2, the switching-off and switching-on selecting unit includes a switching-off key 125, a switching-on key 126, a switching-off output interface 127 and a switching-on output interface 128, wherein a first end of the switching-off key 125 is electrically connected to an output end of the power switching unit, a second end of the switching-off key 125 is electrically connected to a first end of the switching-on key 126, a second end of the switching-on key 126 is electrically connected to an input end of the switching-off output interface 127, and an output end of the switching-off output interface 127 is electrically connected to a switching-off signal input end; a third end of the closing key 126 is electrically connected to an output end of the power switching unit, a fourth end of the closing key 126 is electrically connected to a third end of the opening key 125, a fourth end of the opening key 125 is electrically connected to an input end of the closing output interface 128, and an output end of the closing output interface 128 is electrically connected to a closing signal input end.
In one embodiment, the open button 125 and the close button 126 are interlocked with each other.
Specifically, the switching-on/off selection unit is two click-type buttons with linkage functions, which are respectively defined as a closing button and an opening button, and linkage contacts are arranged between the two buttons, so that the condition that the opening signal and the closing signal do not exist simultaneously in the same time is ensured; the switching-on signal output interface and the switching-off signal output interface are red in color, are marked as the positive pole of a power supply, the negative pole output interface is blue, are marked as the negative pole of the power supply, and respectively correspond to the 1#, 2#, and 3# wiring terminals on the secondary terminal row.
The positive and negative contacts of the storage battery pack are connected to the fixed interface, the positive and negative polarities are identified by red and blue colors to form a fixed direct-current power supply interface, the positive and negative voltages of the dry battery pack are led to the terminals corresponding to the secondary terminal row through the connecting wires during test, and the output of the switching-off signals and the switching-on signals is controlled through two buttons which are linked with each other, so that the risks of wrong connection, short circuit, mistaken collision and the like caused by frequent disconnection of direct-current power supply wires during repeated simulation of remote switching-off signals and switching-on signals for multiple times can be avoided.
In one embodiment, the power supply magnitude display unit is a voltmeter 129.
In one embodiment, as shown in fig. 3, the node measuring module 14 includes a common input interface 141, a plurality of node input interfaces 142, a plurality of node keys 143, a node output interface 144, and a common output interface 145, wherein inputs of the common input interface 141 are electrically connected to an operation signal output terminal of a contactor of the distribution board and a fault signal output terminal of the distribution board, respectively, an output of the common input interface 141 is electrically connected to an input of the common output interface 145, an output of the common output interface 145 is electrically connected to an input of a multimeter, an input of each node input interface 142 is electrically connected to an operation signal output terminal of the contactor of the distribution board and a fault signal output terminal of the distribution board, an output of each node input interface 142 is electrically connected to a first end of one node key 143, a second end of each node key 143 is electrically connected to an input of the node output interface 144, and an output of the node output interface 144 is electrically connected to an input terminal of the multimeter.
Specifically, the node measuring module mainly provides a plurality of groups of node states required to be measured during a switchboard test, taking a drawer switch as an example, in actual work, nodes required to be measured are 4-5,4-6,4-9,4-14,4# terminals on a secondary terminal row as common ends, a common input interface is connected with the 4# terminals on the secondary terminal row through connecting wires, node input interfaces are connected with the 5#, 6#, 9#, and 14# terminals on the secondary terminal row through connecting wires, so that the states of the nodes on the secondary terminal row are led to the device provided by the application, each node controls the on-off of a measuring loop on the device through a point-moving type button, the node output interface and the common output interface are connected to a universal meter, and the on-off of the nodes is measured through the universal meter. Except that the node output interface of the module is red, the colors of all other interfaces are uniform to be black so as to be distinguished from other module connectors, when the module is used, a button corresponding to a node to be measured is pressed down, the node is connected into a measuring loop, and the on-off of the node is measured by using an ohmic gear on a universal meter (note that the direct-current voltage gear is firstly used for detecting that the node is switchable to the ohmic gear after no voltage exists).
As a preferred implementation manner of this embodiment, the node keys are jog buttons, and only one group of nodes can be accessed to the measurement loop at the same time, so as to prevent measurement inaccuracy or crosstalk caused by access of multiple groups of nodes.
In one embodiment, as shown in fig. 4, the shorting module 16 includes a plurality of sets of shorting paths, each set of shorting paths includes a first input interface 161, a second input interface 163, and a shorting button 162, wherein an input terminal of the first input interface 161 is electrically connected to a valve fully-open signal output terminal or a valve fully-closed signal output terminal of the distribution board, an output terminal of the first input interface 161 is electrically connected to a first end of the shorting button 162, an input terminal of the second input interface 163 is electrically connected to a valve fully-open signal output terminal or a valve fully-closed signal output terminal of the distribution board, and an output terminal of the second input interface 163 is electrically connected to a second end of the shorting button 162.
Specifically, the short circuit module provides the function of a plurality of groups of short circuit wires, for example, a drawer switch needs two groups of short circuit wires, the two groups of short circuit wires are independent from each other, 4 joints and 2 self-locking buttons are provided, four interfaces respectively correspond to 25#, 26#, 27#, 28# wiring terminals on a secondary terminal row, wherein 25#, 26# are one group, 27#, 28# are one group, each group realizes the short circuit function through one self-locking button, signal points 25#, 26#, 27#, 28# are connected to the node of the short circuit module through connecting wires, when the drawer switch is used, the short circuit function can be realized only by pressing the corresponding buttons, two groups can be simultaneously short-circuited according to the field requirement, and only one group or two groups can not be short-circuited.
Two pairs of contacts to be short-circuited in a switchboard test are led to a special tool, the short-circuiting function of the contacts is realized through a self-locking button on the special tool, two groups of contact loops are mutually independent, and the on-site operation can be facilitated
In one embodiment, the apparatus further includes a housing within which the power module 12, the node measurement module 14, and the shorting module 16 are disposed.
Particularly, the device includes a casing, and components and parts all set up in the casing, and the casing is the cuboid shape that can take on hand, and the material is the PVC material, has certain thickness, can guarantee to have sufficient mechanical strength when the weight of minimizing.
In one embodiment, as shown in FIG. 5, a display panel is provided on the housing, and a logo is provided on the display panel.
Specifically, the side wall of the front face of the shell is provided with corresponding openings for mounting various components, the side wall is a panel of a special tool, corresponding indication information including power polarity, interface internal connection relation, module function identification and other information is marked at corresponding positions on the panel, a user can conveniently know the functions of corresponding parts, and human errors are reduced.
In the operation test of the drawer switches of the nuclear island low-voltage alternating-current distribution board of the nuclear power station by adopting the conventional manual wiring method, different operation tests are carried out according to different types of drawer switches, when the number of the drawer switches is the largest, remote opening and closing signals are required to be simulated for 12 times, the contact state is measured for 12 pairs, the short-circuit operation is carried out for 14 times, and each drawer switch test needs about 21 minutes. Adopt the nuclear power station nuclear island low pressure AC distribution board test device that this application provided to carry out the drawer switch operation experiment, only need to carry out wiring connection once, all original on the secondary terminal row with power signal, measure the contact, the operation of short circuit will be replaced by the button operation on the device that this application provided, can shorten the about 21 minutes that original every drawer switch test needs to 9 minutes, and the effectual short circuit of having avoided original operation on the secondary terminal row and bringing, the mistake bumps, measure inaccurate risk, personnel will also be reduced to 1 person by original 3 people, the human cost that has shown has been reduced, and the quantity of drawer switch has tens on every distribution board, therefore, the efficiency is greatly promoted, the risk has still eluded simultaneously, reduce personnel's member, the effect is showing.
It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the application.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with a general description of the application given above and the detailed description of the embodiments given below, serve to explain the principles of the application.
These and other characteristics of the present application will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.
It is also to be understood that although the present application has been described with reference to some specific examples, those skilled in the art are able to ascertain many other equivalents to the practice of the present application.
The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the application, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the application of unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present application in virtually any appropriately detailed structure.
The description may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the application.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (10)
1. A nuclear island low-voltage alternating current switchboard test device of a nuclear power station is characterized by comprising the following components: a power supply module, a node measurement module and a short-circuit module, wherein,
the output end of the power supply module is respectively and electrically connected with a switching-off signal input end and a switching-on signal input end of a distribution board main control room, the input end of the node measurement module is respectively and electrically connected with an operation signal output end of a distribution board contactor and a fault signal output end of the distribution board, the output end of the node measurement module is electrically connected with the input end of a universal meter, and the input end of the short-circuit module is respectively and electrically connected with a valve full-on signal output end and a valve full-off signal output end of the distribution board;
the power module is used for simulating a switching-off signal and a switching-on signal matched with a test type, the node measuring module is used for transmitting an operation signal of a distribution board contactor matched with the test type and a fault signal of the distribution board to a universal meter so as to carry out a connection test or a disconnection test of the operation signal of the contactor and the fault signal of the distribution board, and the short circuit module is used for carrying out short circuit on a valve full-opening signal of the distribution board matched with the test type and carrying out short circuit on a valve full-closing signal of the distribution board matched with the test type.
2. The nuclear power plant island low voltage alternating current distribution board testing apparatus of claim 1, wherein the power module comprises a power switching unit, a power amplitude display unit and a switching-on/off selection unit, wherein,
the output end of the power supply switching unit is electrically connected with the input end of the power supply amplitude display unit and the input end of the switching-on/switching-off selection unit respectively, and the output end of the switching-on/switching-off selection unit is electrically connected with the switching-off signal input end and the switching-on signal input end of the switchboard main control chamber respectively.
3. The nuclear power plant island low voltage AC distribution board testing apparatus of claim 2, wherein the input terminal of the power supply amplitude display unit comprises a positive input terminal and a negative input terminal, the power supply switching unit comprises a first battery pack, a second battery pack, a power supply switch and a negative output interface, wherein,
the positive terminal of the first battery pack is respectively electrically connected with the negative terminal of the second battery pack and the first selection input end of the power supply changeover switch, the positive terminal of the second battery pack is electrically connected with the second selection input end of the power supply changeover switch, the output end of the power supply changeover switch is respectively electrically connected with the positive input end of the power supply amplitude display unit and the input end of the switching-on/off unit, the negative terminal of the first battery pack is respectively electrically connected with the input end of the negative output interface and the negative input end of the power supply amplitude display unit, and the output end of the negative output interface is respectively electrically connected with the switching-off signal input end and the switching-on signal input end.
4. The nuclear island low voltage alternating current distribution board testing apparatus of the nuclear power plant of claim 2, wherein the switching-on/off selection unit includes a switching-off key, a switching-on key, a switching-off output interface, and a switching-on output interface, wherein,
the first end of the opening key is electrically connected with the output end of the power supply switching unit, the second end of the opening key is electrically connected with the first end of the closing key, the second end of the closing key is electrically connected with the input end of the opening output interface, and the output end of the opening output interface is electrically connected with the opening signal input end;
the third end of the switching-on key is electrically connected with the output end of the power supply switching unit, the fourth end of the switching-on key is electrically connected with the third end of the switching-off key, the fourth end of the switching-off key is electrically connected with the input end of the switching-on output interface, and the output end of the switching-on output interface is electrically connected with the switching-on signal input end.
5. The nuclear power plant island low voltage alternating current distribution board testing apparatus of claim 4, wherein the opening key and the closing key are interlocked with each other.
6. The nuclear power plant island low voltage alternating current distribution board testing apparatus of claim 2, wherein the power supply amplitude display unit is a voltmeter.
7. The nuclear power plant island low voltage AC distribution board testing apparatus of claim 1, wherein the node measurement module includes a common input interface, a plurality of node input interfaces, a plurality of node buttons, a node output interface, and a common output interface, wherein,
the input end of the public input interface is respectively electrically connected with the operation signal output end of a contactor of the distribution board and the fault signal output end of the distribution board, the output end of the public input interface is electrically connected with the input end of the public output interface, the output end of the public output interface is electrically connected with the input end of the multimeter, the input end of each node input interface is electrically connected with the operation signal output end of the contactor of the distribution board and the fault signal output end of the distribution board, the output end of each node input interface is electrically connected with the first end of one node key, the second end of each node key is electrically connected with the input end of the node output interface, and the output end of the node output interface is electrically connected with the input end of the multimeter.
8. The nuclear power plant island low voltage alternating current distribution board testing apparatus of claim 1, wherein the shorting module comprises a plurality of sets of shorting paths, each set of shorting paths comprising a first input interface, a second input interface, and a shorting button, wherein,
the input end of the first input interface is electrically connected with the valve full-on signal output end or the valve full-off signal output end of the distribution board, the output end of the first input interface is electrically connected with the first end of the short-circuit key, the input end of the second input interface is electrically connected with the valve full-on signal output end or the valve full-off signal output end of the distribution board, and the output end of the second input interface is electrically connected with the second end of the short-circuit key.
9. The nuclear island low voltage alternating current distribution board testing apparatus of a nuclear power plant of claim 1, further comprising a housing, wherein the power module, the node measurement module and the shorting module are all disposed within the housing.
10. The nuclear power plant island low voltage alternating current distribution board testing apparatus of claim 9, wherein a display panel is provided on the housing, the display panel being provided with a logo.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116840589A (en) * | 2023-05-30 | 2023-10-03 | 中核检修有限公司 | Checking fault detector for disc cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116840589A (en) * | 2023-05-30 | 2023-10-03 | 中核检修有限公司 | Checking fault detector for disc cabinet |
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