CN219320506U - Multi-platform neutron dose rate online measuring instrument module - Google Patents
Multi-platform neutron dose rate online measuring instrument module Download PDFInfo
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- CN219320506U CN219320506U CN202223539254.XU CN202223539254U CN219320506U CN 219320506 U CN219320506 U CN 219320506U CN 202223539254 U CN202223539254 U CN 202223539254U CN 219320506 U CN219320506 U CN 219320506U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The utility model discloses a multi-platform neutron dose rate online measuring instrument module, which belongs to the field of neutron dose equivalent rate instruments and comprises a moderating body and a bottom shell, wherein the moderating body is arranged on the bottom shell, a BF3 proportional counting tube is arranged in the moderating body, the bottom end of the BF3 proportional counting tube is connected with a computer core, the computer core is arranged on a bottom shell circuit board, and the bottom shell circuit board is arranged in the bottom shell. And the bottom end of the BF3 proportional counting tube is provided with an HN type connector, and the BF3 proportional counting tube is connected with the computer core through the HN type connector. The BF3 proportional counting tube is internally provided with a tungsten center line electrode, one end of the tungsten center line electrode is connected with the HN type connector through second sealing ceramic, the other end of the tungsten center line electrode is connected with the inflation tube through first sealing ceramic, the tungsten center line electrode is arranged inside the aluminum cylinder body, and the aluminum cylinder body is provided with an end disc. The utility model has the function of continuously monitoring the environmental neutron dose rate; the neutron dose rate alarm device has a neutron dose rate alarm function, and an alarm threshold value is continuously adjustable in a measurement range.
Description
Technical Field
The utility model relates to a neutron dose equivalent rate instrument, in particular to a multi-platform neutron dose rate online measuring instrument module.
Background
Neutron dose equivalent rate meters are a type of portable instrument used to monitor neutron dose equivalent (rate). The neutron dose equivalent rate instrument is suitable for petroleum, medical treatment, nuclear power plants, research type nuclear reactors, accelerators, neutron sources, other security inspection, border control, customs monitoring and other places for producing neutrons. The neutron dosimeter has small product volume, high sensitivity, low power consumption and high measurement precision; the whole machine only uses one button to realize functions of on-off, unit switching, data reading, threshold setting and the like, and is simple and easy to operate. The neutron dosimeter adopts a high-sensitivity inlet He3 tube as a detector, and has high reaction speed. The instrument is convenient to use; the sensor has high sensitivity, good gamma resistance and good energy response characteristic, and can be used as a portable instrument and a fixed neutron dose monitor.
The existing neutron dose equivalent rate instrument does not have a continuous monitoring function, so that detection of a plurality of samples is affected, and the detection effect is affected.
Disclosure of Invention
For the existing problems, the utility model aims to provide a multi-platform neutron dose rate online measuring instrument module so as to solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a many platforms neutron dose rate on-line measuring appearance module, includes the slowing down body and drain pan, the drain pan on be equipped with the slowing down body, the inside BF3 proportional counter tube that is equipped with of slowing down, BF3 proportional counter tube bottom and computer core are connected, the computer core is installed on the drain pan circuit board, the drain pan circuit board sets up in the drain pan.
As a further scheme of the utility model: the side wall of the bottom shell is provided with a display screen.
As a further scheme of the utility model: and the bottom end of the BF3 proportional counting tube is provided with an HN type connector, and the BF3 proportional counting tube is connected with the computer core through the HN type connector.
As a further scheme of the utility model: the BF3 proportional counting tube is internally provided with a tungsten center line electrode, one end of the tungsten center line electrode is connected with the HN type connector through second sealing ceramic, the other end of the tungsten center line electrode is connected with the inflation tube through first sealing ceramic, the tungsten center line electrode is arranged inside the aluminum cylinder body, and the aluminum cylinder body is provided with an end disc.
As a further scheme of the utility model: and BF3 gas is filled in the aluminum cylinder.
Compared with the prior art; the beneficial effects of the utility model are as follows: the utility model has the function of continuously monitoring the environmental neutron dose rate; the neutron dose rate alarm function is realized, and the alarm threshold is continuously adjustable in the measurement range; has the function of powering on automatically.
Drawings
FIG. 1 is a schematic diagram of a multi-platform neutron dose rate on-line meter module.
Fig. 2 is a schematic structural diagram of BF3 proportional counter tube in a multi-platform neutron dose rate on-line measuring module.
FIG. 3 is a schematic diagram of gas ionization characteristics in a multi-platform neutron dose rate online meter module.
In the figure: 1. a slowing body; 2. a bottom case; 3. a display screen; 4. BF3 proportional counting tube; 5. a computer movement; 6. a bottom case circuit board; 7. an end plate; 8. a first sealing ceramic; 9. BF3 gas; 10. a second sealing ceramic; 11. HN type linkers; 12. an aluminum cylinder; 13. a tungsten centerline electrode; 14. and (5) an inflation tube.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "provided," "connected," and "connected" are to be construed broadly; for example, the connection may be fixed connection, detachable connection, or integral connection, mechanical connection, electrical connection, direct connection, indirect connection via an intermediate medium, or communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-3, an online measuring instrument module for neutron dose rate in multiple platforms comprises a slowing body 1 and a bottom shell 2, wherein the bottom shell 2 is provided with the slowing body 1, BF3 proportional counting tube 4 is arranged in the slowing body 1, the bottom end of the BF3 proportional counting tube 4 is connected with a computer core 5, the computer core 5 is arranged on a bottom shell circuit board 6, the bottom shell circuit board 6 is arranged in the bottom shell 2, and a display screen 3 is arranged on the side wall of the bottom shell 2. The neutrons react with certain nuclei to emit charged particles, which when moving in a gas generate gas ionization, and the neutron fluence level is determined by measuring the gas ionization quantity.
Neutrons react with (n, α) of B, giving off α particles. As shown in fig. 3, the gas ionization mechanism is a graph showing the relationship between the number of ions collected at the electrodes after the gas between the electrodes is ionized by radiation and the voltage between the electrodes. Where region I represents the generated ions that are partially recombined before being collected by the electrode. As the voltage increases, the probability of ion recombination becomes lower. Region ii represents the region of saturated ionization current where all generated ions are collected by the electrode. The number of ions collected is only proportional to the radiation density and is substantially independent of the voltage over a fairly wide voltage variation range, i.e. a "plateau" appears. The ionization chamber operates within this "plateau". The voltage continues to increase, a considerable electric field strength is formed near the electrode, and when ions move towards the electrode, relatively large energy is obtained in the electric field, so that gas secondary ionization is caused, and gas discharge is formed. For example, region III, where the output pulse remains proportional to the original total ionization fraction, the proportional count region. Detectors based on this property are known as proportional counters. The number of ions collected by the electrode per ionization, i.e. per pulse, is a constant.
The bottom end of the BF3 proportional counter tube 4 is provided with an HN type connector 11, and the BF3 proportional counter tube 4 is connected with the computer core 5 through the HN type connector 11, so that information transmission is facilitated.
Be equipped with tungsten center line electrode 13 in BF3 proportional counter tube 4, tungsten center line electrode 13 one end is connected through second seal ceramic 10 and HN formula joint 11, and tungsten center line electrode 13 other end is connected through first seal ceramic 8 and gas tube 14, and tungsten center line electrode 13 sets up inside aluminium barrel 12, is equipped with end disk 7 on the aluminium barrel 12, and aluminium barrel 12 is inside to be full of BF3 gas 9, BF3 proportional counter tube: an electrode is formed by a metal round tube, an insulated thin wire is hung along the central axis of the round tube to serve as the other electrode, and BF3 gas is filled in the tube. The neutrons and the alpha particles released by the B action ionize the gas once. The polarization voltage applied to the thin wire is quite high, about 3000V, so that secondary ionization can be generated to increase the ion logarithm generated, improving the sensitivity. The counting tube is the most sensitive of the usual pulse counting tubes.
The neutron dose rate on-line measuring instrument module adopts DC 22-32V wide-voltage power supply, the power supply power is not more than 20W, and the power supply is powered on to automatically start up.
The neutron dose rate on-line measuring instrument module adopts a 10/100M Ethernet interface for communication, and is provided with a warning signal, when the neutron dose rate in the detection environment is higher than a set threshold value, a DC 22-32V level signal is output, the driving power is not less than 5W, and the device is opened when no warning signal exists. Specific communication protocols are detailed in the accessory.
All interfaces of the neutron dose rate on-line measuring instrument module are printed with corresponding interface uses and numbers,
the electrical connector manufacturers of the first party are Taixing aerospace, and the external electrical interfaces are shown in the following table.
And the second party provides a transfer cable, and the cable is divided into 3 quick plugging interfaces, and the model is undetermined.
The neutron dose rate on-line measuring instrument module protective box is provided with a maintenance door, and the module is convenient to detach. The average repair time (MTTR) is less than or equal to 0.5h.
The edges of the neutron dose rate on-line measuring instrument module shell should be chamfered.
The using step of the utility model is to take out the equipment, stably erect the equipment on a plane and ensure that the equipment is in a stable state.
(1) Checking interface state and connecting (network interface, alarm interface, power interface), and connecting the power interface with 24V DC power supply.
(2) And starting up for display, wherein the interface mainly displays 3 numerical values and 2 control keys. The above is: ambient dose equivalent rate, initial value: 0.000uSv/h. The following are: the cumulative dose value, the initial value is: 0.000. 0.000uSv. The lower right corner is: dose reference, initial value: 0. the "set" key: as described below; the "clear" key: the above 3 measurements were cleared.
(3) Setting state, the interface has 3 control keys (IP address, parameter setting, parameter display).
(4) The IP address is set, the localIP address is a local address, the remote IP address is a remote address, the IP address can be set according to the needs, and the return key is pressed after the IP address is set. The IP address is set from top to bottom, and the local IP address is 224.0.52.42; the port number is 40006. The remote IP address is 224.0.52.13; the port number is 4002.
(5) The parameter setting is continuously input twice during setting, so that the correctness is ensured, and the return key is pressed after the setting is finished.
Threshold (pre-value 64, signal trigger level value): range 28-255; suggested values: 48-64; background threshold 31
Accumulated number of points (average number of samples): range 1-15, recommended value: 8
Calibration coefficient (preset 100): factory setting value
Sampling time (the larger the number, the larger the two sampling intervals): range 1-6000; suggested values: 200
Temperature deviation (corrected display temperature): factory setting value
(6) "parameter display".
The left column is:
35.24 ℃ C:: working temperature of movement
0.204V: sampling level
0.000uSv/h: metering value
0.000uSv: cumulative value
The right column is:
0cnt: metering reference value
3.990nSv/h: background metering value
0 Eadd: data storage address
1.001uSv/h: alarm value (upper computer setting)
After browsing, the user presses 'return' to return to the main working interface.
The utility model has the function of continuously monitoring the environmental neutron dose rate; the neutron dose rate alarm function is realized, and the alarm threshold is continuously adjustable in the measurement range; has the function of powering on automatically.
Ambient dose equivalent rate measurement range: 0.1 mu Sv/h-100 mSv/h;
cumulative dose range: 0.1 mu Sv-10 Sv;
sensitivity: > 2 cps/. Mu.Sv;
energy range: the difference between the relative responses of 0.025eV to 5MeV is < + -30%;
angular response: less than or equal to 20 percent (4 pi solid angle);
response time: < 15s;
measurement error: less than 15%.
The neutron dose rate on-line measuring instrument module detects the neutron dose rate of the environment in the open environment, continuously adjusts the power supply voltage to change from DC 21-22V to DC 32-33V, continuously performs power on and off test 10 times, and records the output neutron dose rate and adjusts the neutron dose rate alarm threshold to be lower than the detection value through the upper computer.
The low-temperature work inspection neutron dose rate on-line measuring instrument module can continuously output the detected neutron dose rate, and when the set neutron dose rate alarm threshold is lower than the detection value, the alarm signal is output to the outside in a high level, and when the set neutron dose rate alarm threshold is higher than the detection value, the alarm signal is output to the outside in an open circuit.
As would be apparent to one skilled in the art; it is obvious that the utility model is not limited to the details of the above-described exemplary embodiments; and without departing from the spirit or essential characteristics of the utility model; the utility model can be embodied in other specific forms. Thus, the method comprises the steps of; from either point of view; the embodiments should be considered as exemplary; and is non-limiting; the scope of the utility model is indicated by the appended claims rather than by the foregoing description; it is therefore intended to include within the utility model all changes that fall within the meaning and range of equivalency of the claims. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it is provided that; it should be understood that; although the present description describes embodiments; but not every embodiment contains only one independent technical solution; this manner of description is for clarity only; the skilled artisan should recognize the specification as a whole; the technical solutions in the embodiments may also be combined appropriately; forming other embodiments as will be appreciated by those skilled in the art.
Claims (5)
1. The utility model provides a many platforms neutron dose rate on-line measuring appearance module, its characterized in that, including slowing down body (1) and drain pan (2), drain pan (2) on be equipped with slowing down body (1), slowing down body (1) inside be equipped with BF3 proportional count pipe (4), BF3 proportional count pipe (4) bottom and calculator core (5) are connected, calculator core (5) are installed on drain pan circuit board (6), drain pan circuit board (6) set up in drain pan (2).
2. The multi-platform neutron dose rate online measuring instrument module according to claim 1, wherein a display screen (3) is arranged on the side wall of the bottom shell (2).
3. The multi-platform neutron dose rate online measuring instrument module according to claim 2, wherein the HN-type connector (11) is arranged at the bottom end of the BF3 proportional counter tube (4), and the BF3 proportional counter tube (4) is connected with the computer core (5) through the HN-type connector (11).
4. A multi-platform neutron dose rate on-line measuring instrument module according to claim 3, characterized in that a tungsten central line electrode (13) is arranged in the BF3 proportional counting tube (4), one end of the tungsten central line electrode (13) is connected with the HN joint (11) through the second sealing ceramic (10), the other end of the tungsten central line electrode (13) is connected with the inflation tube (14) through the first sealing ceramic (8), the tungsten central line electrode (13) is arranged inside the aluminum cylinder (12), and the end disc (7) is arranged on the aluminum cylinder (12).
5. The multi-platform neutron dose rate online measurement device module according to claim 4, wherein the aluminum cylinder (12) is filled with BF3 gas (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223539254.XU CN219320506U (en) | 2022-12-29 | 2022-12-29 | Multi-platform neutron dose rate online measuring instrument module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223539254.XU CN219320506U (en) | 2022-12-29 | 2022-12-29 | Multi-platform neutron dose rate online measuring instrument module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219320506U true CN219320506U (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223539254.XU Active CN219320506U (en) | 2022-12-29 | 2022-12-29 | Multi-platform neutron dose rate online measuring instrument module |
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| CN (1) | CN219320506U (en) |
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2022
- 2022-12-29 CN CN202223539254.XU patent/CN219320506U/en active Active
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