CN217061454U - Sensitivity testing device for self-powered detector - Google Patents
Sensitivity testing device for self-powered detector Download PDFInfo
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- CN217061454U CN217061454U CN202123406894.9U CN202123406894U CN217061454U CN 217061454 U CN217061454 U CN 217061454U CN 202123406894 U CN202123406894 U CN 202123406894U CN 217061454 U CN217061454 U CN 217061454U
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- 238000012360 testing method Methods 0.000 title claims abstract description 69
- 230000035945 sensitivity Effects 0.000 title claims abstract description 28
- 239000000725 suspension Substances 0.000 claims abstract description 28
- 239000011148 porous material Substances 0.000 claims abstract description 16
- 239000000523 sample Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 12
- 238000012795 verification Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
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Abstract
The utility model relates to a self-power detector sensitivity testing arrangement. The method can be applied to the sensitivity test of a self-powered detector in a nuclear power plant reactor core measuring system, and can also be applied to other automatic control fields. The fixed suspension is connected with the connecting rod; the test piece is attached and fixed to the groove on the fixed suspension, and the armored cable of the test piece is attached and fixed to the connecting rod; the rotary connecting piece is fixed with the ground of the top of the reactor; the assembled fixed suspension, the test piece and the connecting rod are integrally hung into the pore channel, the lower edge of the top end of the connecting rod is fixedly attached to the upper edge of the top end of the rotary connecting piece, and the lower edge of the fixed suspension is not in contact with the bottom of the pore channel; the armored cable of the test piece is connected with a connector, and the connector is connected with the engineering cable; and the engineering cable is paved on a test field and is connected with the self-powered detector measuring case and the temperature measuring instrument. The method can be used for on-stack calibration and verification of a self-powered detector for a reactor core instrument system.
Description
Technical Field
The utility model relates to a self-power detector sensitivity testing arrangement. The method can be applied to sensitivity test of a self-powered detector in a nuclear power plant reactor core measuring system, and can also be applied to other automatic control fields.
Background
And the self-powered detector outputs a weak current signal which is in direct proportion to the neutron fluence rate of the reactor core. It has the characteristics of high thermal neutron sensitivity, moderate response time and small volume, thus being applicable to the measurement of thermal neutron fluence rate of various reactor cores and the description of thermal neutron fluence rate distribution and change.
The neutron sensitivity measurement of the self-powered detector is influenced by the power stability of a reactor in a test field, a measurement method and the like, and the measurement method is particularly important.
Disclosure of Invention
An object of the utility model is to provide a from energy detector sensitivity testing arrangement can be used to the on-pile demarcation and the verification of the self-energy detector of reactor core instrumentation system usefulness.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a self-powered detector sensitivity testing device is characterized in that a fixed suspension is connected with a connecting rod; the test piece is attached and fixed to the groove on the fixed suspension, and the armored cable of the test piece is attached and fixed with the connecting rod; the rotary connecting piece is fixed with the ground at the top of the reactor; the assembled fixed suspension, the test piece and the connecting rod are integrally hung into the pore channel, the lower edge of the top end of the connecting rod is fixedly attached to the upper edge of the top end of the rotary connecting piece, and the lower edge of the fixed suspension is not in contact with the bottom of the pore channel; the armored cable of the test piece is connected with a connector, and the connector is connected with the engineering cable; and the engineering cable is paved on a test field and is connected with the self-powered detector measuring case and the temperature measuring instrument.
The fixed suspension is connected with the connecting rod through threads.
The fixed suspension is connected with the connecting rod through a pin.
The armored cable of the test piece is connected with the connector through the shielding wire.
The pore channels are dry pore channels.
The channels are selected from wet channels.
The swivel connection takes the form of a dial.
The utility model discloses the beneficial effect who gains does:
the method can be applied to sensitivity test of a self-powered detector in a nuclear power plant reactor core measuring system, and can also be applied to other automatic control fields. The method can be used for on-pile calibration and verification of a self-powered detector for a reactor core instrument system.
Drawings
FIG. 1 is a self-powered probe sensitivity testing apparatus;
FIG. 2 is a schematic view of a horizontal position arrangement of test pieces;
in the figure: 1-a pore channel; 2-a fixed suspension; 3-test piece; 4-a connecting rod; 5-piling the ground; 6-a rotating connection; 7-shielded wire; 8-a connector; 9-engineering cable; 10-self powered probe measurement chassis; 11-temperature measuring instrument.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Preparation before sensitivity testing of the self-powered probe was performed according to the layout shown in fig. 1 and 2. The implementation steps are as follows: connecting the fixed suspension 2 with the connecting rod 4 through threads, pins or other modes; after the test piece 3 is attached and fixed to the groove on the fixed suspension 2, the armored cable of the test piece 3 is attached and fixed to the connecting rod 4. The test working condition of the pore channel is fully considered in the fixing material and the fixing mode; fixing the rotary connecting piece 6 and the reactor top ground 5 of the reactor, and performing trial rotation, wherein the rotary mode can be a manual or automatic mode; the assembled fixed suspension 2, the test piece 3 and the connecting rod 4 are integrally hung into the pore passage 1, the lower edge of the top end of the connecting rod 4 is fixedly attached to the upper edge of the top end of the rotary connecting piece 6, and the lower edge of the fixed suspension 2 is ensured not to be contacted with the bottom of the pore passage; the armored cable of the test piece 3 is connected with a connector 8 through a shielding wire 7, and the connector 8 is connected with an engineering cable 9; laying an engineering cable 9 to a test site to be connected with a self-powered detector measuring case 10 and a temperature measuring instrument 11; after the connection is finished, the whole body is rotated in a trial mode, and whether the whole passage has interference conditions or not is observed; after the steps are completed, instrument debugging and testing can be carried out, and the output value of the test piece can be displayed through the display terminal according to a set method in the testing process so as to calculate the neutron sensitivity.
In order to realize the neutron sensitivity test, the utility model discloses a following technical scheme realizes measuring.
Selection of test channels: a vertical channel is selected in the test stack that has a neutron fluence rate during the test that is sufficient for thermal neutron measurement from a powered detector.
Neutron fluence rate measurement of the channel: and obtaining the absolute neutron fluence rate and distribution (range of core active area) of the pore channel under the highest power platform by adopting an activation method.
Assembling and installing the test path:
the entire channel was assembled and installed according to the general layout shown in fig. 1 and the schematic test piece horizontal position layout of fig. 2.
The entire path includes: the test piece, the fixed frock of test piece, measuring instrument.
The test piece includes: the neutron sensitivity tester comprises a self-powered detector for testing neutron sensitivity, an armored cable for measuring background, a thermocouple for measuring temperature, a shielding wire for transmitting signals and an engineering cable;
the fixed frock of testpieces includes: the device comprises a fixed suspension used for fixing a test piece, a connecting rod and a rotary connecting piece used for supporting rotation;
the measuring instrument includes: the self-powered probe measuring cabinet comprises a self-powered probe measuring cabinet and a temperature measuring instrument.
The assembly and installation sequence of the entire passage is as follows:
rigidly connecting a fixed suspension in the fixed tool with the connecting rod to ensure accurate positioning in the subsequent rotation process; the rotary connecting piece is arranged on the pile top ground, so that the fixed suspension and the connecting rod can be driven to rotate in a manual or automatic mode subsequently; attaching and fixing the test piece to the fixed suspension and the connecting rod; hoisting the whole of the assembled fixed suspension, the test piece and the connecting rod into the pore channel and fixing the whole with the rotary connecting piece; connecting the test piece with an engineering cable through a connector; laying an engineering cable to a test site to be connected with a self-powered detector measuring case and a temperature measuring instrument; after the connection is finished, trial rotation is carried out, and whether interference conditions exist is observed; after the steps are completed, instrument debugging and testing can be carried out in the next step.
The utility model discloses a measuring channel has simulated the connection path under the true operating mode of reactor, has abundant suitability. In particular, the channels may be selected from dry channels or wet channels. The advantage of selecting wet channels is that the high temperature effects during the test can be greatly reduced; the rotary connecting piece and the fixed suspension frame are rigidly connected, so that errors in the rotating process are greatly reduced; the rotary connecting piece can adopt a dial form or other forms to ensure the rotation precision; the rear end of the test piece adopts a lighter conducting wire with a shielding effect so as to ensure that the rotating process is not subjected to overlarge stress and avoid possible electromagnetic interference.
Sensitivity measurement of self-powered probe: the reactor is started and lifted to a required power platform, and tests are carried out on different power platforms in a rotating or non-rotating mode to continuously record output signals of an energy detector, a background cable and a thermocouple. And after shutdown, output signals of the self-powered detector, the background cable and the thermocouple are also recorded. And calculating the neutron sensitivity according to the test current of the self-powered detector under different platforms and the neutron fluence rate calculated by an activation method.
In particular, according to actual requirements, measurement can be performed in two ways of rotation and non-rotation on different power platforms. The rotation angle can be adjusted according to requirements, in order to guarantee the test accuracy, the rotation angle of each time can be as small as possible, but equal-angle rotation needs to be considered so as to calculate the neutron sensitivity. After rotating a certain angle, stabilizing for different time according to the type and the characteristics of the self-powered detector to ensure the accuracy of the measured data; the insulation resistance test can be carried out on a local cable at some power platforms to deduce the insulation resistance of a self-powered detector at the power platform; 1-2 standard self-powered detectors can be installed in the fixed suspension for relative neutron sensitivity measurement.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A self-powered detector sensitivity testing device is characterized in that: the fixed suspension is connected with the connecting rod; the test piece is attached and fixed to the groove on the fixed suspension, and the armored cable of the test piece is attached and fixed to the connecting rod; the rotary connecting piece is fixed with the ground of the top of the reactor; the assembled fixed suspension, the test piece and the connecting rod are integrally hung into the pore channel, the lower edge of the top end of the connecting rod is fixedly attached to the upper edge of the top end of the rotary connecting piece, and the lower edge of the fixed suspension is not in contact with the bottom of the pore channel; the armored cable of the test piece is connected with a connector, and the connector is connected with the engineering cable; and the engineering cable is paved on a test field and is connected with the self-powered detector measuring case and the temperature measuring instrument.
2. The self-powered probe sensitivity testing device of claim 1, wherein: the fixed suspension is connected with the connecting rod through threads.
3. The self-powered probe sensitivity test apparatus of claim 1, wherein: the fixed suspension is connected with the connecting rod through a pin.
4. The self-powered probe sensitivity test apparatus of claim 1, wherein: the armored cable of the test piece is connected with the connector through a shielding wire.
5. The self-powered probe sensitivity test apparatus of claim 1, wherein: the pore channels are dry pore channels.
6. The self-powered probe sensitivity test apparatus of claim 1, wherein: the channels are selected from wet channels.
7. The self-powered probe sensitivity test apparatus of claim 1, wherein: the swivel connection takes the form of a dial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123406894.9U CN217061454U (en) | 2021-12-31 | 2021-12-31 | Sensitivity testing device for self-powered detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123406894.9U CN217061454U (en) | 2021-12-31 | 2021-12-31 | Sensitivity testing device for self-powered detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217061454U true CN217061454U (en) | 2022-07-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123406894.9U Active CN217061454U (en) | 2021-12-31 | 2021-12-31 | Sensitivity testing device for self-powered detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217061454U (en) |
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2021
- 2021-12-31 CN CN202123406894.9U patent/CN217061454U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231129 Address after: 102401 No. 8, Fusheng West Street, Changyang Road, Fangshan District, Beijing Patentee after: CHINA NUCLEAR CONTROL SYSTEM ENGINEERING Co.,Ltd. Patentee after: NUCLEAR POWER INSTITUTE OF CHINA Address before: 102401 No. 8, Fusheng West Street, Changyang Road, Fangshan District, Beijing Patentee before: CHINA NUCLEAR CONTROL SYSTEM ENGINEERING Co.,Ltd. |