CN210347945U

CN210347945U - Nuclear radiation monitoring device

Info

Publication number: CN210347945U
Application number: CN201920931143.2U
Authority: CN
Inventors: 王标; 杜宇; 周海强; 庞上集; 邹燕梅; 张玉包
Original assignee: Beijing High Energy New Technology Co ltd
Current assignee: Beijing High Energy New Technology Co ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-04-17
Anticipated expiration: 2029-06-19

Abstract

The application discloses a nuclear radiation monitoring device, which comprises a plurality of detection units, a first switch and a plurality of second switches, wherein each second switch is connected with a first optical fiber transceiver and a plurality of detection units; the utility model discloses pass through switch, optical fiber transceiver and optic fibre with entire system's equipment constitution LAN and accomplish data transmission with a plurality of detecting element, solved the nuclear radiation monitoring difficulty problem of distance factory building far away.

Description

Nuclear radiation monitoring device

Technical Field

The invention relates to the technical field of nuclear radiation detection, in particular to a nuclear radiation monitoring device.

Background

At present, the inspection mode of the nuclear radiation environment mainly comprises two modes of manual inspection and fixed monitoring.

The manual inspection is that an inspector inspects nuclear radiation sites regularly, the inspection work efficiency is low, the operation time is long, the inspection content is single, and the inspector can be irradiated by nuclear radiation in the inspection process; the fixed point monitoring is that a detector is arranged at an important position of a nuclear radiation area or at a certain distance, data detected by the detector can be monitored in a central control room, and the nuclear radiation dose rate level in a concerned area can be known in real time.

However, the conventional fixed point detection method has a short data transmission distance and a large data loss amount in long-distance transmission, and is not suitable for long-distance monitoring.

Disclosure of Invention

In view of the above-mentioned deficiencies or inadequacies in the prior art, it would be desirable to provide a long-range nuclear radiation detection apparatus.

In a first aspect, the utility model relates to a long distance nuclear radiation detection device provides a long distance nuclear radiation monitoring management system scheme, including a plurality of detecting element, still include first switch and a plurality of second switch, each second switch all is connected with first fiber transceiver and a plurality of detecting element, and each first fiber transceiver passes through the optic fibre one-to-one and connects second fiber transceiver, and each second fiber transceiver all is connected with first switch.

Further, the detection unit comprises an ionization chamber.

Furthermore, each ionization chamber is connected with a data acquisition module in a one-to-one correspondence manner, each data acquisition module comprises a current-voltage conversion unit and a single chip microcomputer circuit unit, each single chip microcomputer circuit unit comprises an analog-to-digital conversion unit and a single chip microcomputer, the ionization chambers are connected with the current input ends of the current-voltage conversion units, the voltage output ends of the current-voltage conversion units are connected with the signal input ends of the analog-to-digital conversion units, the signal output ends of the analog-to-digital conversion units are connected with the signal input ends of the single chip microcomputers, and the signal output ends of the single chip microcomputers are connected with a.

Preferably, the ionization chamber is a spherical ionization chamber filled with 24-26 atmospheres of nitrogen.

Preferably, the ionization chamber is a spherical ionization chamber filled with 25 atmospheres of nitrogen.

Further, the first switch is connected with a control device, and the control device is connected with a display.

Furthermore, the control device is connected with an audible and visual alarm unit.

Preferably, the optical fiber is an armored optical fiber.

According to the utility model provides a technical scheme is through passing through switch, optical fiber transceiver and optic fibre with entire system's equipment constitution LAN and accomplish data transmission with a plurality of detection units, because optical fiber transmission has characteristics such as high bandwidth, the big decay of communication volume is little, transmission distance is far away, can accomplish the remote transmission of data, has solved the problem that the factory building nuclear radiation detection difficulty far away.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic diagram of a nuclear radiation detection device according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a data acquisition module according to an embodiment of the present invention;

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As a nuclear radiation monitoring device in the embodiment of fig. 1, the nuclear radiation monitoring device includes a plurality of detection units 210, and further includes a first switch 330 and a plurality of

second switches

220 and 230, each second switch is connected to a first

optical fiber transceiver

240 and 250 and a plurality of detection units 210, each first

optical fiber transceiver

240 and 250 is connected to a second

optical fiber transceiver

310 and 320 through an optical fiber 260 in a one-to-one correspondence manner, and each second

optical fiber transceiver

310 and 320 is connected to the first switch 330. Each detection unit detects the nuclear radiation dosage value in the workshop, and then transmits to first fiber transceiver through the second switch, and first fiber transceiver transmits to second fiber transceiver through optic fibre, and second fiber transceiver transmits the nuclear radiation dosage value to first switch through the net twine.

In this embodiment, as an optional implementation manner, 8 detection units 210 are provided, and 3 detection units are installed at 3 positions specified by the first workshop 110, and are used to detect a nuclear radiation dose value in the first workshop; installing 5 detection units at 5 designated positions in the second workshop 120 for detecting the nuclear radiation dose value in the second workshop; the output end of the second switch 220 is connected to the first optical fiber transceiver 240 through a network cable, the input end of the second switch 220 is connected to the 3 detection units in the first workshop through a network cable, and the first optical fiber transceiver 240 is connected to the second optical fiber transceiver 310 through an optical fiber 260; the output end of the second switch 230 is connected with the first optical fiber transceiver 250 through a network cable, the input end of the second switch 230 is connected with the 5 detection units in the second workshop through the network cable, the first optical fiber transceiver 250 is connected with the second optical fiber transceiver 320 through an optical fiber, the second

optical fiber transceivers

310 and 320 are connected to the first switch 330 through the network cable, and the nuclear radiation dosage value detected by the detection units in the workshop is transmitted remotely through the switches and the optical fiber transceivers by the optical fiber. The installation requirements in the first workshop and the second workshop are explosion-proof installation requirements.

In addition, each workshop is also provided with a fresh air system, each detection unit has the function of automatically triggering alarm when the radiation dose exceeds a threshold value, and when the system receives an alarm signal exceeding the threshold value, the linked fresh air system is triggered to discharge polluted air in the workshop in time and send fresh air into the workshop, so that the diffusion hazard of radioactive substances is reduced in time.

Further, the detection unit 210 includes an ionization chamber; each ionization chamber is connected with a data acquisition module (not shown in the figure) in a one-to-one correspondence manner, the data acquisition module comprises a current-voltage conversion unit 410 and a single chip circuit unit, the single chip circuit unit comprises an analog-to-digital conversion unit 420 and a single chip 430, the ionization chambers are connected with a current input end of the current-voltage conversion unit 410, a voltage output end of the current-voltage conversion unit 410 is connected with a signal input end of the analog-to-digital conversion unit 420, a signal output end of the analog-to-digital conversion unit is connected with a signal input end of the single chip 430, a signal output end of the single chip is connected with a second switch, and the ionization chambers are spherical ionization chambers filled with 24-26 atmospheric argon.

Each ionization chamber converts the nuclear radiation information detected into a current signal, transmits the current signal to a current-voltage conversion unit, the current-voltage conversion unit converts the current signal into a voltage signal and transmits the voltage signal to an analog-digital conversion unit, the analog-digital conversion unit converts the voltage signal into a digital signal and transmits the digital signal to a single chip microcomputer, and the single chip microcomputer processes the digital signal and transmits the digital signal to a second switch.

Preferably, the ionization chamber is a spherical ionization chamber filled with 25 atmospheres of argon gas.

In the nuclear radiation detection device in this embodiment, the detection unit 210 includes ionization chambers and data acquisition modules, each ionization chamber is connected with the data acquisition module in a one-to-one correspondence manner, the ionization chambers are spherical ionization chambers filled with 25 atmospheres of argon gas, and are used for detecting environmental X rays and gamma rays, and the spherical ionization chambers filled with 25 atmospheres of argon gas have the characteristics of high sensitivity, good energy responsiveness, high stability and the like, so that the nuclear radiation dose value in a workshop can be accurately detected.

The data acquisition module shown in fig. 2 comprises a single chip microcomputer circuit unit and two current-voltage conversion units, and is used for acquiring and processing data signals detected by the spherical ionization chamber. The single chip microcomputer circuit unit comprises an analog-digital conversion unit and a single chip microcomputer, the ionization chamber is connected with a current input end of the current-voltage conversion unit, a voltage output end of the current-voltage conversion unit is connected with a signal input and output section end of the analog-digital conversion unit, a signal output end of the analog-digital conversion unit is connected with a signal input end of the single chip microcomputer, and a signal output end of the single chip microcomputer is connected with the second switch to transmit collected data to the second switch.

Further, the first switch 330 is connected with a control device 340, the control device is connected with a display, and the control device is connected with an audible and visual alarm unit. The first switch receives data information of nuclear radiation dosage, transmits the data information to the control device, displays the data information through the display, and triggers the sound-light alarm unit to send out sound-light alarm signals to remind workers when the radiation dosage value exceeds a threshold value.

In this embodiment, first switch one end is passed through the net twine and is connected with second fiber transceiver, and the other end passes through net twine connection controlling means, and the nuclear radiation information in the first worker room that detecting element detected the place respectively and the second worker room, passes through the second switch respectively, first fiber transceiver, optical fiber transmission to second fiber transceiver, and second fiber transceiver transmits nuclear radiation information for first switch through the net twine, and first switch transmits information transmission for controlling means.

The control device is connected with a display, the display is a touch screen display, the information acquired by each detection unit is displayed through the touch screen, and the alarm threshold value of each detection unit can be set and changed through an operation button of a display interface; the control device is also connected with a memory and used for storing nuclear radiation dose values detected by the detection units, and staff can call information stored in the memory through the display at any time to review historical data and meet the requirement of processing stored data. The control device is also connected with a buzzer and a light emitting tube, and the buzzer and the light emitting tube work when the nuclear radiation dose exceeds an alarm threshold value, so that acousto-optic alarm is realized.

The utility model discloses a controlling means can long-rangely modify and set up the alarm threshold value of each detection unit, has greatly made things convenient for the monitoring work of site work personnel to worker's room.

Preferably, the optical fiber is an armored optical fiber. The outdoor armored optical fiber is preferentially adopted in the embodiment, has high tensile strength, high compression resistance and rat bite resistance, and can resist the damage caused by improper torsion and bending; the construction is simple and convenient, the maintenance cost is saved, and the construction method can adapt to various severe environments and artificial damages.

The whole power supply scheme of this embodiment does, and first worker's room second worker's room does not all provide the equipment power consumption, and 8 ionization chambers and supporting data acquisition module's power consumption are drawn forth by the outside distribution room in worker's room, and the electricity is got nearby to central control room equipment. Because the technology that equipment and product related in the worker's room is secret technology, for preventing that the distribution personnel from getting into the leakage of secret, and the installation requirement in the worker's room is explosion-proof installation requirement, consequently do not provide equipment power consumption in first worker's room and the second worker's room, the power consumption is introduced by the outer distribution room of worker's room.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A nuclear radiation monitoring apparatus comprising a plurality of detection units; the optical fiber detection device is characterized by further comprising a first switch and a plurality of second switches, wherein each second switch is connected with a first optical fiber transceiver and a plurality of detection units, each first optical fiber transceiver is connected with a second optical fiber transceiver in a one-to-one correspondence mode through optical fibers, and each second optical fiber transceiver is connected with the first switch.

2. The nuclear radiation monitoring device of claim 1, wherein the detection unit includes an ionization chamber.

3. The nuclear radiation monitoring device of claim 2, wherein each ionization chamber is connected with a data acquisition module in a one-to-one correspondence manner, the data acquisition module comprises a current-voltage conversion unit and a single chip microcomputer circuit unit, the single chip microcomputer circuit unit comprises an analog-to-digital conversion unit and a single chip microcomputer, the ionization chambers are connected with a current input end of the current-voltage conversion unit, a voltage output end of the current-voltage conversion unit is connected with a signal input end of the analog-to-digital conversion unit, a signal output end of the analog-to-digital conversion unit is connected with a signal input end of the single chip microcomputer, and a signal output end of the single chip microcomputer is connected with the second switch.

4. A nuclear radiation monitoring apparatus according to claim 2 or 3 in which the ionisation chamber is a spherical ionisation chamber filled with 24 to 26 atmospheres of nitrogen.

5. The nuclear radiation monitoring device of claim 4, wherein the ionization chamber is a spherical ionization chamber filled with 25 atmospheres of nitrogen.

6. The nuclear radiation monitoring device of claim 1, wherein a control device is connected to the first switch, and a display is connected to the control device.

7. The nuclear radiation monitoring device of claim 6, wherein an audible and visual alarm unit is connected to the control device.

8. The nuclear radiation monitoring device of any one of claims 1-3 and 6-7, wherein the optical fiber is an armored optical fiber.