CN220381792U

CN220381792U - Auxiliary measuring device for core neutron measuring system selector

Info

Publication number: CN220381792U
Application number: CN202322139470.3U
Authority: CN
Inventors: 管刚; 徐景虎; 张泽勇; 折东东; 陈明; 潘瑞堂
Original assignee: China Nuclear Power Operation Co Ltd; Yangjiang Nuclear Power Co Ltd
Current assignee: China Nuclear Power Operation Co Ltd; Yangjiang Nuclear Power Co Ltd
Priority date: 2023-08-09
Filing date: 2023-08-09
Publication date: 2024-01-23
Anticipated expiration: 2033-08-09

Abstract

The utility model discloses a core neutron measurement system selector measurement auxiliary device, which comprises a test box and a butt-joint cable; a plurality of pins corresponding to the pins on the aviation plug are arranged in the test box, and jacks are arranged corresponding to the pins; one end of the butt-joint cable is electrically connected with the aviation plug of the selector, and the other end of the butt-joint cable is electrically connected with the test box, so that pins of the test box are electrically connected with pins on the aviation plug in a one-to-one correspondence manner; the auxiliary measuring device provided by the utility model can conveniently connect the pins on the aviation plug to the pins of the test box through the butt-joint cable, and can realize measurement between each pin or a plurality of pins of the aviation plug to be measured by using the measuring instrument to insert into the jack, so that the risk during measurement of the RIC selector is reduced, the existing measuring mode is required to be changed, equipment damage caused by personnel skill problems is avoided, meanwhile, the working time is reduced, and unnecessary dose irradiation of maintenance personnel is reduced.

Description

Auxiliary measuring device for core neutron measuring system selector

Technical Field

The utility model relates to the technical field of nuclear power electric appliance control circuits, in particular to a measurement auxiliary device of a core neutron measurement system selector.

Background

The RIC core measurement system has the functions of providing measurement data of a core neutron flux distribution map, a reactor fuel assembly cooling water outlet water temperature and a reactor pressure vessel water level, and the in-room electromechanical equipment mainly comprises a driving device, a selector, an automatic control isolation valve and the like, wherein the selector is mainly divided into a group selector and a road selector, the group selector is provided with three or four output channels, and the neutron flux detector can be sent to a normal operation channel or an emergency channel or a storage channel or a common calibration reference channel; the selectors can send neutron flux detectors from their set of selectors to one of the ten channels connected to the finger sleeve, individually, in succession, requiring each round of overhaul to test for electrical parameters to ensure that their function is available because of the importance of the selectors in the in-stack neutron flux measurement process. The prior measuring method needs to manually measure the aviation plug pins of the selector one by one (as shown in (1) of the figure), and when the measurement pin current or voltage is measured, the selector is damaged if the operation is wrong.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a core neutron measurement system selector measurement auxiliary device aiming at the defects.

The technical scheme adopted for solving the technical problems is as follows: a core neutron measurement system selector measurement auxiliary device comprises a test box and a butt-joint cable;

a plurality of pins for butt joint and jacks corresponding to the pins are arranged in the test box;

one end of the butt-joint cable is electrically connected with the aviation plug of the selector, and the other end of the butt-joint cable is electrically connected with the test box, so that pins of the test box are electrically connected with pins on the aviation plug in a one-to-one correspondence manner.

Further, it is preferable that the docking cable includes a first connector mechanically and electrically connected to the test box, a second connector mechanically and electrically connected to the aviation plug, and a connection wire electrically connecting pins of the test box and pins on the aviation plug in one-to-one correspondence.

Further, preferably, the first plug connector is fixedly connected with the connecting wire, and the second plug connector is detachably connected with the connecting wire.

Further, it is preferable that the number of wires in the connection line is at least configured to be matched with the number of pins on the aviation plug so that all pins on the aviation plug are in one-to-one correspondence to the test cartridge.

Further, it is preferable that the ends of the first and second connectors are each provided with a dust cover.

Further, it is preferable that the receptacle is matched with a stylus of a measuring instrument.

Further, the diameter of the insertion hole is preferably from 3.9 to 4.1mm.

Further, preferably, the test box comprises a housing made of ABS material, the housing comprises an upper housing and a lower housing matched with the upper housing, a plurality of pins are arranged in the lower housing, a plurality of jacks matched with the pins are arranged on the upper housing, an inserting port is arranged on the side wall of the lower housing or the side wall of the upper housing, and the docking cable is inserted in the inserting port.

Further, it is preferable that the upper case is detachably connected with the lower case.

Further, it is preferable that a pin identifier for identifying a corresponding pin of the aviation plug is provided beside each of the insertion holes.

The utility model has the following beneficial effects: the auxiliary measuring device for the reactor core neutron measuring system selector provided by the utility model can conveniently connect the pins on the aviation plug to the pins of the test box through the butt-joint cable, and can realize measurement among each pin or a plurality of pins of the aviation plug to be measured by using the measuring instrument to insert the jack, so that the risk during measurement of the RIC selector is reduced, the existing measuring mode is required to be changed, equipment damage caused by personnel skill problems is avoided, meanwhile, the working time is shortened, and unnecessary dose irradiation of maintenance personnel is reduced.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a perspective view of a test box of a core neutron measurement system selector measurement assisting device of the present utility model;

FIG. 2 is a schematic view of the structure of the lower shell of the test box of the core neutron measurement system selector measurement assisting device of the present utility model;

FIG. 3 is a schematic view of the structure of the upper case of the test cassette of the core neutron measurement system selector measurement assisting device of the present utility model;

FIG. 4 is a schematic view of the structure of the docking cable of the measurement aid of the core neutron measurement system selector of the present utility model;

FIG. 5 is a schematic view showing the use state of the auxiliary device for measuring the neutrons in the reactor core.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings.

An element is referred to as being "mounted" or "disposed" on another element and may be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.

The utility model provides a core neutron measurement system selector measurement auxiliary device, as shown in fig. 1-5, comprising a test box 10 and a docking cable 20; a plurality of butt-joint pins 11 and jacks 12 corresponding to the pins 11 are arranged in the test box 10; one end of the docking cable 20 is electrically connected to the aviation plug 41 of the selector 40, and the other end of the docking cable 20 is electrically connected to the test cartridge 10, so that the pins 11 of the test cartridge 10 are electrically connected to the pins on the aviation plug 41 in a one-to-one correspondence. According to the utility model, all pins on the aviation plug 41 can be conveniently connected to the pins 11 of the test box 10 through the butt-joint cable 20, so that the pins 11 of the test box 10 are electrically connected with the pins on the aviation plug 41 in a one-to-one correspondence manner, when the current or voltage of the pins of the aviation plug 41 needs to be measured, the measurement between each pin or a plurality of pins of the aviation plug 41 to be measured can be realized by inserting the measuring pen of the measuring instrument 50 into the jack 12, the risk during measurement of the RIC selector 40 is reduced, the existing measurement mode must be changed, the equipment damage caused by personnel skill problem is avoided, meanwhile, the working time is shortened, the unnecessary dose irradiation of maintenance personnel is reduced, the occupied space is small, the operation is convenient, and the device can be used without special training.

In a specific embodiment, as shown in fig. 1-3, the test cartridge 10 includes a housing 13 made of ABS material, which has high hardness and strength, heat resistance and corrosion resistance, and is easy to decontaminate, durable to use, and not easy to damage. The shell 13 comprises an upper shell 131 and a lower shell 132 matched with the upper shell 131, a plurality of pins 11 are arranged in the lower shell 132, a plurality of jacks 12 matched with the pins 11 are arranged on the upper shell 131, namely one jack 12 corresponds to one pin 11, and a stylus of the measuring instrument 50 can be inserted into a plug to measure a certain pin 11; the number of the pins 11 is at least the number matched with the number of the pins of the aviation plug 41, wherein the matching can be one-to-one correspondence, or a plurality of pins 11 correspond to one pin; so that measurements can be made between each pin or pins of the aviation plug 41 by means of the pins 11 at the time of detection. A socket 133 is formed on a side wall of the lower shell 132 or the upper shell 131, the docking cable 20 is plugged into the socket 133, and each pin 11 is connected to the socket 133, so that each pin 11 is electrically connected with a corresponding pin through the docking cable 20.

In a specific embodiment, the upper case 131 and the lower case 132 are preferably detachably connected, so that the test cartridge 10 can be conveniently disassembled for maintenance when a fault occurs, or the upper case 131 or the lower case 132 can be replaced with a new one, and the test cartridge is covered when in use.

In a specific embodiment, as shown in fig. 4, the docking cable 20 includes a first connector 21, a second connector 22, and a connecting wire 23 disposed therebetween, wherein the first connector 21 is used for mechanically and electrically connecting with the test cartridge 10, the second connector 22 is used for mechanically and electrically connecting with the aviation plug 41, and the connecting wire 23 is used for electrically connecting pins 11 of the test cartridge 10 with pins on the aviation plug 41 in a one-to-one correspondence.

In a specific embodiment, the first plug connector 21 is fixedly connected with the connecting wire 23, the second plug connector 22 is detachably connected with the connecting wire 23, and the second plug connector 22 with the same specification is configured for aviation plugs 41 with different specifications, so that the auxiliary measuring device provided by the utility model is suitable for all aviation plugs 41 in a nuclear power plant by selecting the second plug connectors 22 with different specifications according to field requirements when in use, thereby improving universality of measuring tools and measuring efficiency.

In a specific embodiment, the number of wires in the connection wires 23 is at least configured to be matched with the number of pins on the aviation plug 41, and it is understood that the pins on the aviation plug 41 are in one-to-one correspondence with the number of connection wires 23, or that a plurality of connection wires 23 are corresponding to one pin of the aviation plug 41, so that all pins 11 on the aviation plug 41 are uniformly corresponding to the test box 10.

In a specific embodiment, it is preferable that both the first connector 21 and the second connector 22 are provided with a dust cap 30 and have no shorting lines to prevent damage to the equipment due to tool circuit failure caused by long-term storage.

In a specific embodiment, the jack 12 is matched with a measuring pen of the measuring instrument 50, so that the measuring meter of the measuring instrument 50 can be connected to the corresponding pin 11 through the jack 12, and thus, the voltage or the current of the pin of the corresponding aviation plug 41 can be measured.

In a specific embodiment, meter 50 is a multimeter and the outside diameter of the stylus of an existing multimeter is typically about Φ4mm, so that in order to allow the stylus of the multimeter to be removed into jack 12 for connection to pin 11, the aperture of jack 12 is preferably about Φ3.9-4.1mm.

In a specific embodiment, a pin identifier for identifying a corresponding pin of the aviation plug 41 is provided beside each jack 12, and each pin identifier is used for identifying a corresponding pin of the aviation plug 41, and the pin identifier can be a structural member with a color, a structural member with a number, a different protruding structure, a different fluorescent structural member and the like, so that the identification of workers is facilitated, the operation of the workers is facilitated, and the probability of personnel error is reduced.

The measurement auxiliary device is used on each unit RIC system in a nuclear power plant at present, so that the neutron probe installation speed and success rate of the RIC system are successfully and effectively ensured, the original 10-hour installation period is shortened to 4 hours after the measurement auxiliary device is used, the working efficiency is effectively improved, unnecessary damage of system equipment caused by personnel skill problems is avoided, and the dose irradiation of maintenance personnel is reduced.

The aspects of the present utility model have been described in detail hereinabove with reference to the accompanying drawings. In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments. Those skilled in the art will also appreciate that the acts and modules referred to in the specification are not necessarily required for the present utility model. In addition, it can be understood that the steps in the method of the embodiment of the present utility model may be sequentially adjusted, combined and pruned according to actual needs, and the modules in the device of the embodiment of the present utility model may be combined, divided and pruned according to actual needs.

The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A core neutron measurement system selector measurement assisting device, characterized by comprising a test box (10) and a docking cable (20);

a plurality of pins (11) corresponding to the contact pins on the aviation plug of the selector are arranged in the test box (10), and jacks (12) are arranged corresponding to the pins (11);

one end of the butt-joint cable (20) is electrically connected with an aviation plug of the selector, and the other end of the butt-joint cable (20) is electrically connected with the test box (10), so that pins (11) of the test box (10) are electrically connected with pins on the aviation plug in a one-to-one correspondence manner.

2. The core neutron measurement system selector measurement assisting device according to claim 1, characterized in that the docking cable (20) comprises a first plug (21) mechanically and electrically connected to the test box (10), a second plug (22) mechanically and electrically connected to an aerial plug, and a connection wire (23) electrically connecting pins (11) of the test box (10) with pins on the aerial plug in a one-to-one correspondence.

3. The core neutron measurement system selector measurement assisting device according to claim 2, wherein the first plug (21) is fixedly connected with a connecting wire (23), and the second plug (22) is detachably connected with the connecting wire (23).

4. The core neutron measurement system selector measurement assisting device according to claim 2, characterized in that the number of wires in the connection line (23) is at least configured to match the number of pins on the aerial plug so that all pins (11) on the aerial plug uniformly correspond one to one on the test box (10).

5. The core neutron measurement system selector measurement assisting device according to claim 2, characterized in that the ends of the first plug (21) and the second plug (22) are both provided with dust caps (30).

6. The core neutron measurement system selector measurement assisting device according to claim 1, wherein the insertion hole (12) is matched with a measuring stylus of a measuring instrument.

7. The core neutron measurement system selector measurement assisting device according to claim 6, wherein the aperture of the insertion hole (12) is Φ3.9-4.1mm.

8. The reactor core neutron measurement system selector measurement auxiliary device according to claim 1, wherein the test box (10) comprises a shell (13) made of an ABS material, the shell (13) comprises an upper shell (131) and a lower shell (132) matched with the upper shell (131), a plurality of pins (11) are arranged in the lower shell (132), a plurality of insertion holes (12) matched with the pins (11) are formed in the upper shell (131), an insertion port (133) is formed in the side wall of the lower shell (132) or the side wall of the upper shell (131), and the docking cable (20) is inserted into the insertion port (133).

9. The core neutron measurement system selector measurement assisting device of claim 8, wherein the upper shell (131) is detachably connected with the lower shell (132).

10. The core neutron measurement system selector measurement assisting device according to claim 1, wherein a pin identifier for identifying a corresponding pin of an aviation plug is provided beside each of the insertion holes (12).