CN215448132U - Nuclear power plant guided wave radar level gauge calibration tool - Google Patents
Nuclear power plant guided wave radar level gauge calibration tool Download PDFInfo
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- CN215448132U CN215448132U CN202121708417.5U CN202121708417U CN215448132U CN 215448132 U CN215448132 U CN 215448132U CN 202121708417 U CN202121708417 U CN 202121708417U CN 215448132 U CN215448132 U CN 215448132U
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- guided wave
- wave radar
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Abstract
The utility model relates to the technical field of nuclear power monitoring, and particularly discloses a nuclear power plant guided wave radar liquid level meter calibration tool, wherein a row of scale guide rails are vertically arranged on the outer side wall of a measuring cylinder; the lower part of the measuring cylinder is provided with a water inlet and outlet joint which is connected with a water inlet and outlet pipeline; the other end of the water inlet and outlet pipeline is connected with a water tank of the pressure test pump; the water in the water tank of the pressure test pump is pumped into the measuring cylinder under the control of the manual pressure-applying rod, and meanwhile, the pressure value in the water tank of the pressure test pump is read through the pressure gauge. By adopting the tool, the guided wave radar liquid level meter can be effectively checked, the accuracy of checking data is ensured, errors are reduced, the working efficiency of a steam turbine is ensured, the safety and stability of a unit are improved, and the unit is prevented from being shut down and stopped.
Description
Technical Field
The utility model belongs to the technical field of nuclear power monitoring, and particularly relates to a nuclear power plant guided wave radar liquid level meter calibration tool.
Background
In a nuclear power plant, a steam-water separator reheater system (GSS) dehumidifies and reheats exhaust gas of a high-pressure cylinder, provides high-quality steam supply for a low-pressure cylinder, effectively reduces cavitation erosion of turbine blades and impellers, and effectively ensures the working efficiency of a turbine and the power generation efficiency of a generator. The liquid level measurement of a drain tank of the existing steam-water separation reheater system mostly adopts a guided wave radar liquid level meter measurement mode, 3 liquid level meters of one drain tank and 18 liquid level meters in total. During overhaul of the unit, the guided wave radar liquid level meter needs to be checked.
However, at present, a jack method or a chemical measuring cylinder irrigation method is mainly adopted for verification, and a proper verification tool is lacked. When the jack method is adopted for calibration, the problems of large calibration error, easy damage to the measurement probe rod of the guided wave radar liquid level meter and the like exist; when the chemical measuring cylinder is adopted for calibration, the problems of inconvenience in calibration reading, high difficulty in water supply and drainage and the like exist, although the guided wave radar liquid level meter can also be calibrated by the two methods, the detection rod of the liquid level meter is damaged, the calibration efficiency is low, the possibility of liquid level measurement deviation of a drain tank is caused, and then the working efficiency of a steam turbine is reduced by water inlet of the steam turbine or isolation of a secondary heater, and the safe and stable operation of a unit is seriously threatened.
In view of the situation, in order to improve the accuracy, reliability and work efficiency of the guided wave radar level gauge verification, a special verification tool for the guided wave radar level gauge is continuously designed.
Disclosure of Invention
The utility model aims to provide a nuclear power plant guided wave radar liquid level meter calibration tool which is simple to install and accurate in calibration data.
The technical scheme of the utility model is as follows:
the nuclear power plant guided wave radar liquid level meter calibration tool comprises a vertically placed measuring cylinder, wherein a row of scale guide rails are vertically arranged on the outer side wall of the measuring cylinder;
the lower part of the measuring cylinder is provided with a water inlet and outlet joint which is connected with a water inlet and outlet pipeline; the other end of the water inlet and outlet pipeline is connected with a water tank of the pressure test pump;
the water in the water tank of the pressure test pump is pumped into the measuring cylinder under the control of the manual pressure-applying rod, and meanwhile, the pressure value in the water tank of the pressure test pump is read through the pressure gauge.
And an exhaust port is processed on the outer side wall of the measuring cylinder and above the scale guide rail.
And a grid is arranged on the outer side wall of the measuring cylinder.
During checking, the manual operator is connected with the guided wave radar liquid level meter and is placed in the grillwork.
And two water inlet and outlet connectors are processed at the lower part of the measuring cylinder, one of the water inlet and outlet connectors is connected with a water inlet pipeline, the other water outlet connector is connected with a water outlet pipeline, and the other ends of the water inlet pipeline and the water outlet pipeline are respectively connected with a water tank of the pressure test pump.
The water inlet pipeline is provided with a water inlet valve, and the water outlet pipeline is provided with a water discharge valve.
During checking, the guided wave radar liquid level meter is directly inserted into the measuring cylinder.
The utility model has the beneficial effects that:
(1) by adopting the tool, the guided wave radar liquid level meter can be effectively checked, the accuracy of checking data is ensured, errors are reduced, the working efficiency of a steam turbine is ensured, the safety and stability of a unit are improved, and the unit is prevented from being shut down and stopped.
(2) The tool adopts the measuring cylinder for verification, so that the internal probe rod of the guided wave radar liquid level meter can be fundamentally protected, the equipment loss is reduced, and the cost is reduced.
(3) The tool is provided with a scale guide rail, so that the measured data can be visual.
(4) The tool is provided with the water inlet valve and the water discharge valve, is convenient to check on site, easy to operate and convenient to supply and discharge water, and can greatly improve the working efficiency on site.
(5) The tool has low cost and high practicability, and can obviously reduce the economic cost for a power plant.
Drawings
FIG. 1 is a schematic diagram of a verification tool.
In the figure: 1-a framework; 2-a scale guide rail; 3-a measuring cylinder; 4-water inlet and outlet joints; 5-a water inlet valve; 6-a drain valve; 7-manual pressure lever; 8-a pressure test pump water tank; 9-a pressure gauge; 10-exhaust port.
Detailed Description
The utility model is described in further detail below with reference to the figures and the embodiments.
The nuclear power plant guided wave radar liquid level meter calibration tool shown in figure 1 comprises a measuring cylinder 3, a water inlet valve 5, a water drain valve 6, a water inlet and outlet pipeline and a pressure test pump.
The measuring cylinder 3 is vertically placed, a row of scale guide rails 2 are vertically arranged on the outer side wall of the measuring cylinder 3, an exhaust port 10 is processed on the outer side wall of the measuring cylinder 3 and above the scale guide rails 2, and a grillwork 1 used for placing a hand operator is arranged on the outer side wall of the measuring cylinder 3.
Two water inlet and outlet connectors 4 are processed at the lower part of the measuring cylinder 3, one of the water inlet and outlet connectors is connected with a water inlet pipeline, the other water outlet pipeline is connected with a water outlet pipeline, and the other ends of the water inlet pipeline and the water outlet pipeline are respectively connected with a water tank 8 of the pressure test pump.
The water inlet pipeline is provided with a water inlet valve 5, and the water outlet pipeline is provided with a water discharge valve 6.
The manual pressurizing rod 7 is used for controlling the water in the water tank 8 of the pressure test pump to be pumped into the measuring cylinder 3, and meanwhile, the pressure value in the water tank 8 of the pressure test pump is read through the pressure gauge 9.
During verification, the guided wave radar liquid level meter is directly inserted into the measuring cylinder 3, the manual operator is connected and arranged and then placed in the grillwork 1, then the water inlet valve 5 is opened, the water discharge valve 6 is closed, a proper amount of water is added into the water tank 8 of the pressure test pump, the water in the water tank 8 of the pressure test pump is controlled to be pumped into the measuring cylinder 3 through the manual pressure bar 7, and the verification work of the guided wave radar liquid level meter is started.
And after the verification is finished, opening the drain valve 6, closing the water inlet valve 5, discharging the water of the measuring cylinder 3 into the water tank 8 of the pressure test pump, then removing the wiring of the manual operator, and taking down the guided wave radar liquid level meter.
Claims (7)
1. Nuclear power plant's guided wave radar level gauge check-up instrument, its characterized in that: the measuring device comprises a vertically placed measuring cylinder (3), wherein a row of scale guide rails (2) are vertically arranged on the outer side wall of the measuring cylinder (3);
a water inlet and outlet joint (4) is processed at the lower part of the measuring cylinder (3) and is connected with a water inlet and outlet pipeline; the other end of the water inlet and outlet pipeline is connected with a water tank (8) of the pressure test pump;
the water in the water tank (8) of the pressure test pump is pumped into the measuring cylinder (3) under the control of the manual pressurizing rod (7), and meanwhile, the pressure value in the water tank (8) of the pressure test pump is read through the pressure gauge (9).
2. The nuclear power plant guided wave radar level gauge verification tool of claim 1, wherein: the device also comprises an exhaust port (10) which is processed on the outer side wall of the measuring cylinder (3) and above the scale guide rail (2).
3. The nuclear power plant guided wave radar level gauge verification tool of claim 1, wherein: the outer side wall of the measuring cylinder (3) is provided with a grillwork (1).
4. The nuclear power plant guided wave radar level gauge verification tool of claim 3, wherein: during checking, the manual operator is connected with the guided wave radar liquid level meter and is placed in the grid (1).
5. The nuclear power plant guided wave radar level gauge verification tool of claim 1, wherein: two water inlet and outlet connectors (4) are processed at the lower part of the measuring cylinder (3), one of the water inlet and outlet connectors is connected with a water inlet pipeline, the other water outlet and inlet pipeline is connected with a water outlet pipeline, and the other ends of the water inlet pipeline and the water outlet pipeline are respectively connected with a water tank (8) of the pressure test pump.
6. The nuclear power plant guided wave radar level gauge verification tool of claim 5, wherein: the water inlet pipeline is provided with a water inlet valve (5), and the water outlet pipeline is provided with a water outlet valve (6).
7. The nuclear power plant guided wave radar level gauge calibration tool of any one of claims 1 to 6, wherein: during checking, the guided wave radar liquid level meter is directly inserted into the measuring cylinder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121708417.5U CN215448132U (en) | 2021-07-26 | 2021-07-26 | Nuclear power plant guided wave radar level gauge calibration tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121708417.5U CN215448132U (en) | 2021-07-26 | 2021-07-26 | Nuclear power plant guided wave radar level gauge calibration tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215448132U true CN215448132U (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202121708417.5U Active CN215448132U (en) | 2021-07-26 | 2021-07-26 | Nuclear power plant guided wave radar level gauge calibration tool |
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| Country | Link |
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| CN (1) | CN215448132U (en) |
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2021
- 2021-07-26 CN CN202121708417.5U patent/CN215448132U/en active Active
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