CN213456019U - Nuclear power unit penetration piece leakproofness test device - Google Patents
Nuclear power unit penetration piece leakproofness test device Download PDFInfo
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- CN213456019U CN213456019U CN202022051058.2U CN202022051058U CN213456019U CN 213456019 U CN213456019 U CN 213456019U CN 202022051058 U CN202022051058 U CN 202022051058U CN 213456019 U CN213456019 U CN 213456019U
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Abstract
The utility model provides a nuclear power unit penetration piece leakproofness test device, flow measurement pipeline including connecting between pipeline entry and pipeline export still includes the data processing unit, be equipped with flow measurement unit and pressure measurement unit on the flow measurement pipeline, the flow measurement unit includes electron micro flow sensor, the pressure measurement unit includes pressure sensor, electron micro flow sensor, pressure sensor all with data processing unit signal connection. The device has the advantages of high measurement precision, convenience in operation, good safety and convenience in carrying.
Description
Technical Field
The utility model relates to a leakproofness test device, concretely relates to nuclear power unit penetration assembly leakproofness test device.
Background
The nuclear power unit penetration assembly tightness test is a regular test project in nuclear power unit overhaul, and the test workload, the test method and the test medium are different according to different unit types during the whole overhaul. The project has the characteristics of scattered test places, high uncertainty of a test time window, certain limitation on test duration and higher risk of radioactive contamination.
The flow method is a method commonly adopted in the tightness test of the nuclear power unit penetration assembly, and comprises a flow supplement method and a flow collection method. The test medium can adopt compressed air, nitrogen or demineralized water, and in the actual test, adopt compressed air or nitrogen as the experimental work load that can significantly reduce of medium, reduce the radiation leakage risk, it is comparatively simple and convenient to test.
At present, a penetrating piece sealing test device developed according to the flow method principle is adopted in China, a field factory air compression system or a nitrogen cylinder is used as an air source, a pressure regulating unit, a flow measuring unit and a pressure measuring unit are assembled on site, the pressure of air filled into the penetrating piece is controlled through a pressure regulating valve, and the leakage flow is measured through a float flowmeter.
The existing tightness testing device is a pure mechanical device, a float flowmeter is used as a core component for flow measurement, and the device has very obvious use limitation:
(1) the accuracy of the float flowmeter is generally low, and in view of the measurement principle, the float flowmeters all have a measurement lower limit larger than 0, and when the flow is small, the measurement may not be possible;
(2) the reading of the float flowmeter is completely visual, so that the caused error is large, even the condition that the float cannot be seen horizontally due to the limitation of the test environment can occur, the condition that the float is kept horizontal is required to be used, the requirement on the test field condition is high, and the complexity of the device is increased;
(3) the leakage rate measured by the flow method generally takes standard condition flow as an acceptance standard, the float flowmeter can only measure the flow under the local working condition, and the measured value of the float flowmeter needs to be calculated with the local pressure and temperature;
(4) the existing tightness test device belongs to a complete mechanical device, does not have a centralized control module, is inconvenient to operate and has a single function;
(5) the shape of the float flowmeter has certain influence on the layout of the device, so that the existing device has overlarge volume or the flowmeter and other components are dispersedly arranged, and the use is inconvenient;
(6) the internal pipeline of current device arranges more complicacy, and the valve is more, leads to the operation of device more loaded down with trivial details, makes experimental radiation risk have certain promotion.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a nuclear power unit penetration piece leakproofness test device that measurement accuracy is high, the simple operation, the security is good to overcome prior art's above-mentioned defect.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a nuclear power unit penetration assembly leakproofness test device, is including connecting the flow measurement pipeline between pipeline entry and pipeline export, its characterized in that still includes the data processing unit, be equipped with flow measurement unit and pressure measurement unit on the flow measurement pipeline, the flow measurement unit includes electron micro flow sensor, the pressure measurement unit includes pressure sensor, electron micro flow sensor, pressure sensor all with data processing unit signal connection.
Preferably, the flow measuring unit comprises a plurality of electronic micro-flow sensors respectively located on different measuring branches, the measuring branches are connected in the flow measuring pipeline through a switching valve, and the electronic micro-flow sensors on each measuring branch have different measuring ranges.
Preferably, the flow measuring unit comprises three electronic micro-flow sensors which are set to be a high measuring range, a medium measuring range and a low measuring range, and the difference of the three measuring ranges is 10 times.
Preferably, the system further comprises a bypass without a flow measuring unit, and the bypass is connected with the flow measuring pipeline through the switching valve.
Preferably, the system further comprises a human-computer interaction module, and the human-computer interaction module is connected with the data processing unit.
Preferably, the flow measuring pipeline is further provided with an inlet valve and a pressure regulating valve.
Preferably, the flow measuring pipeline is also provided with a flow measuring outlet valve.
Preferably, the pipeline inlet and the pipeline outlet are double-end shut-off quick-connection interfaces.
Preferably, the device also comprises a box body, a cover plate is arranged on the box body, and the flow measurement pipeline and the data processing unit are arranged in the box body.
As the above, the utility model relates to a nuclear power unit penetration piece leakproofness test device has following beneficial effect:
the utility model discloses accuracy, test efficiency and the security to the nuclear power penetration piece leakproofness is experimental have very big promotion, specifically as follows:
(1) the use of the electronic micro-flow sensor and the data processing unit thoroughly solves various defects of the float flowmeter, improves the accuracy, simultaneously has more visual measurement, greatly reduces the requirement of the device on the environment, can execute test operation at any time and any place, completely does not need to prepare additional auxiliary instrument tools such as a pressure gauge, a thermometer, a calculator and the like on site for standard condition conversion, can directly record the result, obviously shortens the operation time of personnel in the radiation environment, and obviously reduces the workload;
(2) the man-machine interaction module can display and operate the built-in software of the data processing unit, the auxiliary function of the software basically covers all requirements needed by the test, the execution operation of the sealing test of the penetration piece is more convenient and faster, the flow selection can be visually confirmed according to the displayed flow, the selection of the gas type, the time and the like can accurately and rapidly realize the adjustment response, the data does not need to be recorded on paper any more, and the data can be arranged after the test;
(3) the built-in stability of software and filtering algorithm can show that the flow variation trend is comparatively mild to filter the data jump that causes non-experimental reason, make the utility model discloses compare with current testing arrangement, experimental leakage rate of surveying has better stability and accuracy, can not appear that data are beated and are leaded to unable reaching stably, or need for a long time just can tend to the stable condition.
Drawings
Fig. 1 is a schematic structural diagram of the sealing test apparatus of the present invention.
Fig. 2 is a schematic view of the use state of the sealing test apparatus of the present invention.
In the figure:
1. the device comprises a pipeline inlet 2, a pipeline outlet 3, a flow measurement pipeline 4, a low-range electronic micro-flow sensor 5, a medium-range electronic micro-flow sensor 6, a high-range electronic micro-flow sensor 7, a bypass 8, an inlet valve 9, a pressure regulating valve 10, a switching valve 11, a flow measurement outlet valve 12, a pressure sensor 13, a data processing unit 14, a human-computer interaction module 15, a box 16, a cover plate 17, a penetrating piece 18, a hose and a control unit
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The utility model relates to a nuclear power unit penetration piece leakproofness test device, including a data processing unit 13 and flow measurement pipeline 3, flow measurement pipeline 3's both ends are equipped with pipeline entry 1 and pipeline export 2 respectively, be equipped with flow measurement unit and pressure measurement unit on the flow measurement pipeline 3, flow measurement unit includes electron micro flow sensor 4,5,6, pressure measurement unit includes pressure sensor 12, electron micro flow sensor 4,5,6, pressure sensor 12 all with data processing unit 13 signal connection.
In the present embodiment, the flow measurement unit includes a plurality of electronic micro-flow sensors 4,5,6 respectively located on different measurement branches, the measurement branches are connected in the flow measurement pipeline 3 through a switching valve 10, and the electronic micro-flow sensors 4,5,6 on each measurement branch have different ranges.
In this embodiment, the flow measurement unit includes three electronic micro-flow sensors 4,5,6, which are set to be in three ranges of high, medium and low, and the three ranges are sequentially different by 10 times, so as to design electronic micro-flow sensors with different ranges, and the electronic micro-flow sensor with a proper range is selected according to the gas flow passing through the flow measurement pipeline, thereby improving the measurement accuracy.
The use of the electronic micro-flow sensors 4,5,6 as flow measurement units has the following advantages:
(1) according to the measuring principle of the electronic micro-flow sensors 4,5 and 6, compared with a float flowmeter, the electronic micro-flow sensor has higher measuring precision which can generally reach 1% F.S., and the initial point of the measured flow is 0, so that the situation that the flow is too small and cannot be measured does not exist;
(2) the electronic micro-flow sensors 4,5 and 6 can output digital display signals without visual reading and estimation reading, have no requirement on levelness during use, and can completely avoid measurement errors caused by the levelness;
(3) the electronic micro-flow sensors 4,5 and 6 are internally provided with pressure sensors, temperature sensors and algorithm modules, so that the measured local working condition flow can be automatically converted into standard condition flow, the local temperature and pressure do not need to be measured again for manual calculation during testing, the testing workload is saved, and the working time is shortened;
(4) the electronic micro-flow sensors 4,5 and 6 are regular in shape and small in size, the overall arrangement compactness of the device can be improved, the space utilization rate is improved, the size of the device is reduced, and the device has higher portability.
(5) The electronic micro-flow sensors 4,5 and 6 belong to laminar flow type flow sensors, have the characteristics of low power consumption and high measurement speed, do not need to be preheated before use, can immediately have test conditions after equipment is started, reduce the time consumed by early work of tests, reduce the power consumption of components and prolong the standby time.
In this embodiment, a bypass 7 without a flow measuring unit is also included, said bypass 7 being connected to the flow measuring line 3 via a switching valve 10.
In this embodiment, the system further comprises a human-computer interaction module 14, and the human-computer interaction module 14 is connected with the data processing unit 13.
The man-machine interaction module 14 comprises a touch screen, the electronic micro-flow sensors 4,5 and 6 and the pressure sensor 12 are connected with the data processing unit 13 through communication cables, the data processing unit 13 reads the measurement data of the sensors in real time, the data processing unit 13 is internally provided with matched software, the internal algorithm of the software can improve the display stability and accuracy of the measurement data, and the software expands functional items, and the specific scheme is as follows:
(1) data measured and output by all the sensors are displayed in a panel in a centralized manner, and the state change of a flow field in the penetration piece is mastered in real time, so that the test process is more visual;
(2) functional options such as time display, gas selection, unit conversion, zero clearing, decimal digit adjustment, backlight adjustment, automatic data storage and the like are added, and powerful auxiliary functions are provided when the multifunctional gas cooker is used;
(3) the function of the sensor is fully utilized, besides the output of the measurement data, the output and adjustment of other parameters are also realized in software, and the function of the sensor is completely embedded into the software;
(4) and compiling a measurement data processing algorithm, and increasing the stability and accuracy of the display data on the premise of ensuring that the measurement result is more conservative.
In this embodiment, the flow measurement pipeline 3 is further provided with an inlet valve 8 and a pressure regulating valve 9 for controlling the opening and closing of the test medium inlet and regulating the flow of the test medium.
In this embodiment, the flow measurement pipeline 3 is further provided with a flow measurement outlet valve 11 for controlling the switch for the outflow of the test medium.
In this embodiment, pipeline entry 1 and pipeline export 2 are bi-polar shutoff and connect the interface soon, make device and pipeline dismouting convenient, save installation space.
As shown in fig. 2, in this embodiment, the device further includes a box body 15, a cover plate 16 is disposed on the box body 15, the flow measurement pipeline 3, the data processing unit 13, the human-computer interaction module 14 and the like are disposed in the box body 15, and the whole testing device is disposed in the box body 15 and becomes a whole, so that field installation is avoided.
The utility model discloses develop according to the principle of flow supplement method, combine the experimental method requirement of penetration piece, comb device performance, functional requirement again, formulate corresponding implementation method to the experimental environmental condition in the fully considered nuclear island carries out overall design.
The utility model relates to a nuclear power unit penetration piece leakproofness test device's experimental operating procedure does:
(1) closing an inlet valve 8 and a flow measurement outlet valve 11 of the test device, adjusting a pressure regulating valve 9 to a fully closed position, switching a switching valve 10 to a bypass 7, and connecting a power supply to start the test device;
(2) connecting a pipeline inlet 1 with an air source through a hose 18, wherein the air source can be a factory compressed air system or a nitrogen cylinder, and a pipeline outlet 2 is connected with a connector of a tested penetrating piece 17;
(3) opening an air supply valve of an air source, opening a port valve of the tested penetration piece 17, opening an inlet valve 8 of the test device, adjusting the opening degree of a pressure regulating valve 9, and starting pressurizing the penetration piece 17;
(4) switching the interface of the human-computer interaction module 14 to a high-range measurement interface, observing the reading of the pressure measurement module, and adjusting the pressure regulating valve 9 to stabilize the pressure in a test pressure interval when the pressure of the penetrating piece reaches the test pressure;
(5) after the pressure is stable, switching the switching valve 10 to a measuring branch where the high-range electronic micro-flow sensor 6 is located, and simultaneously observing the flow reading and the pressure measuring module reading, if the flow is stable, data recording can be carried out;
(6) if the flow reading is reduced below the range of the high-range flowmeter, the range alarm turns red, the switching valve 10 is switched to the measuring branch where the middle-range electronic micro-flow sensor 5 is located, the interface of the human-computer interaction module 14 is switched to the middle-range measuring interface, and the flow reading and the pressure measuring module reading are observed at the same time, and if the flow is stable, data recording can be carried out;
(7) if the flow reading is reduced to be below the range of the medium-range flowmeter, the range alarm turns red, the switching valve 10 is switched to the measuring branch where the low-range electronic micro-flow sensor 4 is located, the interface of the human-computer interaction module 14 is switched to the low-range measuring interface, and the flow reading and the pressure measuring module reading are observed at the same time, and if the flow is stable, data recording can be carried out;
(8) during the test, if the reading of the pressure measurement module is found to be changed, the reading of the pressure measurement module is required to be stabilized within a test pressure interval, and the reading of the flowmeter is read again;
(9) the flow and pressure units can be selected through an interface of the human-computer interaction module 14, and the gas temperature can be read from a parameter reading interface;
(10) the screen brightness, screen saver time, decimal place, etc. can be adjusted in the system setting of the human-computer interaction module 14;
(11) after the test is finished, the air source is closed, the switching valve 10 is switched to a bypass, the exhaust is carried out through the valve on the penetrating piece connecting pipe, after the exhaust is finished, the inlet valve 8, the pressure regulating valve 9 and the flow measurement outlet valve 11 of the test device are closed, the connection between the tightness test device and the air source and the penetrating piece 17 is disconnected, and the power supply is disconnected.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a nuclear power unit penetration assembly leakproofness test device, is including connecting flow measurement pipeline (3) between pipeline entry (1) and pipeline export (2), its characterized in that still includes data processing unit (13), be equipped with flow measurement unit and pressure measurement unit on flow measurement pipeline (3), flow measurement unit includes electron micro flow sensor (4,5,6), pressure measurement unit includes pressure sensor (12), electron micro flow sensor (4,5,6), pressure sensor (12) all with data processing unit (13) signal connection.
2. The leak test apparatus according to claim 1, wherein the flow rate measurement unit includes a plurality of electronic micro-flow sensors (4,5,6) respectively located on different measurement branches, the measurement branches being connected in the flow rate measurement line (3) through a switching valve (10), the electronic micro-flow sensors (4,5,6) on each measurement branch having different ranges.
3. The leak test apparatus according to claim 2, wherein the flow rate measurement unit includes three electronic micro-flow sensors (4,5,6) provided in three ranges of high, medium, and low, which are sequentially different by a factor of 10.
4. The leak test apparatus according to claim 2, further comprising a bypass (7) without a flow measuring unit, the bypass (7) being connected to the flow measuring line (3) through a switching valve (10).
5. The tightness test device according to claim 1, characterized in that it further comprises a human-machine interaction module (14), said human-machine interaction module (14) being connected with the data processing unit (13).
6. The leak test device according to claim 1, characterized in that an inlet valve (8) and a pressure regulating valve (9) are further provided on the flow measurement line (3).
7. The leak test apparatus according to claim 6, wherein a flow measurement outlet valve (11) is further provided on the flow measurement line (3).
8. The tightness test device according to claim 1, characterized in that the pipeline inlet (1) and the pipeline outlet (2) are double-ended shut-off quick-connect interfaces.
9. The tightness test device according to claim 1, further comprising a box body (15), wherein a cover plate (16) is disposed on the box body (15), and the flow measurement pipeline (3) and the data processing unit (13) are disposed in the box body (15).
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| CN202022051058.2U CN213456019U (en) | 2020-09-18 | 2020-09-18 | Nuclear power unit penetration piece leakproofness test device |
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| CN202022051058.2U CN213456019U (en) | 2020-09-18 | 2020-09-18 | Nuclear power unit penetration piece leakproofness test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405739A (en) * | 2021-06-19 | 2021-09-17 | 上海凯研机械设备有限公司 | Method and system for testing sealing performance of mechanical penetration piece |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405739A (en) * | 2021-06-19 | 2021-09-17 | 上海凯研机械设备有限公司 | Method and system for testing sealing performance of mechanical penetration piece |
| CN113405739B (en) * | 2021-06-19 | 2023-01-03 | 上海凯研机械设备有限公司 | Method and system for testing sealing performance of mechanical penetration piece |
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