CN215767485U - Full-automatic pressure switch of hydraulic turbine speed control system and pressure transmitter calibration equipment - Google Patents
Full-automatic pressure switch of hydraulic turbine speed control system and pressure transmitter calibration equipment Download PDFInfo
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- CN215767485U CN215767485U CN202121174959.9U CN202121174959U CN215767485U CN 215767485 U CN215767485 U CN 215767485U CN 202121174959 U CN202121174959 U CN 202121174959U CN 215767485 U CN215767485 U CN 215767485U
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Abstract
A full-automatic pressure switch and pressure transmitter calibration device for a water turbine speed regulating system is characterized in that a power switch is turned on, a key is used for setting the service time of a calibration instrument, a thinner pipeline is used for communicating a pressure source with a pressure interface of a sensor to form a closed pressure end, when the system pressure changes, the pressure sensor converts the corresponding pressure signal into a voltage signal and feeds the voltage signal back to the control system, thereby effectively controlling the system, the display screen observes the pressure value, the pressure measured by the pressure gauge for correction is the same as the pressure measured by the pressure sensor, when the readings of the pressure gauge for correction and the pressure sensor are consistent, the pressure sensor is accurate, when the reading of the pressure meter for correction is inconsistent with the reading of the pressure sensor, the pressure sensor needs to be overhauled or replaced, the high-precision sensor is convenient to maintain and replace, the pressure sensor can be automatically used at regular time, the energy waste is reduced, and the energy is saved.
Description
Technical Field
The utility model belongs to the technical field of water turbine speed regulation calibration, and relates to a full-automatic pressure switch and pressure transmitter calibration device for a water turbine speed regulation system.
Background
In the power production of the hydropower station, a pressure switch and a pressure transmitter are often adopted to measure the pressure on an oil tank, a pump inlet/outlet and a pipeline, signals of the pressure switch and the pressure transmitter usually participate in system control and fault alarm, and particularly, a low oil pressure switch of the pressure oil tank of a water turbine speed regulating system directly triggers an accident shutdown process of a water turbine generator set.
The prior pressure switch and pressure transmitter have the following problems in the use process and equipment management: firstly, after the pressure switch and the pressure transmitter are used for a period of time, the pressure switch and the pressure transmitter are required to be subjected to on-site verification or calibration so as to determine the action accuracy and setting value of the pressure switch and verify whether the linearity of the pressure transmitter meets the use requirement. And secondly, the traditional pressure calibrator has simple principle and lower reliability. In a closed pressure calibration pipeline, gas pressure is generated through manual pressurization, and the gas pressure is regulated through observation and reading of the indication value of a pressure instrument in a manual pressurization mode. The regulation function is to provide a certain accurate gas pressure at the pressure output port, and the gas pressure is used as standard pressure and is connected to a pressure instrument to be calibrated for calibrating various pressure instruments. Thirdly, the traditional checking mode adopts personnel observation and a pressure calibration mode of manually pressurizing and adjusting pressure, the observation error is large, time and labor are wasted, especially in the power production field or in a small pressure range, when pressure detection is carried out, the manually adjusted pressure is not easy to be stable, the observation is greatly influenced by human interference factors, and the working efficiency is low.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a full-automatic pressure switch and pressure transmitter calibration device for a water turbine speed regulating system, which has a simple structure, wherein a power switch is turned on, a key is used for setting the service time of a calibration instrument, a thinner pipeline is used for communicating a pressure source with a pressure interface of a sensor to form a closed pressure end, when the pressure of a system changes, a pressure sensor converts a corresponding pressure signal into a voltage signal and feeds the voltage signal back to a control system, so that the system is effectively controlled, a display screen observes a pressure value, the pressure measured by a pressure gauge for calibration is the same as the pressure measured by the pressure sensor, when the pressure measured by the pressure gauge for calibration is consistent with the reading of the pressure sensor, the pressure sensor is accurate, and when the pressure measured by the pressure gauge for calibration is inconsistent with the reading of the pressure sensor, the pressure sensor needs to be overhauled or replaced.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides a full-automatic pressure switch of hydraulic turbine speed control system and pressure transmitter calibration equipment, it includes the button on orifice plate formula installation piece surface, the button top is equipped with switch, the valve pipeline, the opening of sensor pipeline and the body interface pipeline that awaits measuring is located the different outer wall of orifice plate formula installation piece respectively, the central line of valve pipeline, sensor pipeline and the body interface pipeline that awaits measuring is perpendicular with the outer wall of corresponding orifice plate formula installation piece, be equipped with low pressure sensor and high pressure sensor on the orifice plate formula installation piece, low pressure sensor is located the high pressure sensor left side.
One end of the interface pipeline of the body to be measured is provided with a fluorine injection nozzle, and the fluorine injection nozzle is connected with a pressure pipe with a centre type joint for correction between the pressure gauge
The central lines of the valve pipeline, the sensor pipeline and the interface pipeline of the body to be measured are mutually vertical.
And a sealing gasket is adopted between the sensor pipeline and the pressure sensor for sealing.
And a display screen is arranged on the surface of the orifice plate type mounting block.
The advantages are that:
the whole structure is compact, simple and reliable, the maintainability is good, the calibration is accurate, the observation error is small, and the time and the labor are saved;
the pressure sensor has the functions of periodically correcting the interface, sealing the pressure and the like, is convenient to maintain and replace, can be automatically used at regular time, reduces the energy waste and saves the energy.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the orifice plate type mounting block of the present invention.
FIG. 3 is a schematic view of the structure of the fluorine injection nozzle according to the present invention.
In the figure: the device comprises a 1-hole plate type installation block, a 2-positioning boss, a 3-valve pipeline, a 4-bolt hole, a 5-display screen, a 6-key, a 7-power switch, an 8-sensor pipeline, a 9-sealing gasket, a 10-low-pressure sensor, an 11-high-pressure sensor, a 12-angle valve, a 13-to-be-measured body interface pipeline, a 14-fluorine injection nozzle and a 15-correction pressure gauge.
Detailed Description
As shown in fig. 1 to 3, a full-automatic pressure switch and pressure transmitter calibration device for a water turbine speed regulating system comprises a perforated plate type mounting block 1;
the whole orifice plate type mounting block 1 is of a cuboid structure, and the surface of the orifice plate type mounting block 1 is provided with a key 6; a power switch 7 is arranged above the key 6; after the power switch 7 is turned on, the calibrator can start to work, the keys 6 can input numerical values, and the working time of the calibrator can be set, so that the waste of electric energy can be reduced, and the energy can be saved;
the orifice plate type mounting block 1 is divided into a left part and a right part which are respectively a high-pressure end and a low-pressure end, the high-pressure three-way pipeline combination comprises a valve pipeline 3, a sensor pipeline 8 and an interface pipeline 13 of a body to be tested, openings of the valve pipeline 3, the sensor pipeline 8 and the interface pipeline 13 of the body to be tested are respectively positioned on different outer wall surfaces of the orifice plate type mounting block 1, and the central lines of the valve pipeline 3, the sensor pipeline 8 and the interface pipeline 13 of the body to be tested are vertical to the outer wall surfaces of the corresponding orifice plate type mounting block 1;
the low-pressure three-way pipeline combination of the orifice plate type mounting block 1 has the same structure as the high-pressure three-way pipeline combination;
the hole plate type mounting block 1 is provided with two positioning bosses 2 and a bolt hole 4, is positioned on the other outer side wall opposite to the opening of the interface pipeline 13 of the body to be tested and is used for mounting the whole device on the unit, the unit is provided with a corresponding fixing support, positioning is carried out on the fixing support through the positioning bosses 2, firm mounting of the whole component on the support can be guaranteed by using one bolt, and mounting is simple;
the two ends of the orifice plate type mounting block 1 are provided with angle valves 12; the orifice plate type mounting block 1 is provided with a low-pressure sensor 10 and a high-pressure sensor 11, and the low-pressure sensor 10 is positioned on the left side of the high-pressure sensor 11; the bottom of the sensor is connected with a sensor pipeline 8;
one end of the body interface pipeline 13 to be measured is provided with a fluorine injection nozzle 14, and the fluorine injection nozzle 14 is connected with a pressure gauge 15 for correction by a pressure pipe with a centre-of-centre type joint; the core type joint jacks up the valve core of the fluorine injection nozzle 14, the pressure cavity of the pressure sensor is communicated with the pressure gauge 15 for correction while ensuring sealing, namely the pressure measured by the pressure gauge 15 for correction is the same as the pressure measured by the pressure sensor, and the correction accuracy is ensured; when the readings of the pressure gauge 15 for correction are consistent with those of the pressure sensor, the accuracy of the pressure sensor can be judged; when the reading of the pressure meter for correction is inconsistent with the reading of the pressure sensor, the pressure sensor can be judged to need to be overhauled or replaced.
Further, the valve pipeline 3, the sensor pipeline 8 and the interface pipeline 13 of the body to be measured have their respective pipeline central lines perpendicular to each other.
Further, adopt seal gasket 9 to seal between sensor pipeline 8 and the pressure sensor, increase the leakproofness, guarantee that the check gauge uses.
Furthermore, the high-pressure three-way pipeline combination and the low-pressure three-way pipeline combination are mutually separated; the mutual influence is avoided, and the accuracy of the calibrator is ensured.
Further, the surface of the orifice plate type mounting block 1 is provided with a display screen 5 which can display pressure values, so that the workers can conveniently check data.
The working principle of the utility model is as follows:
when the pressure correction device is used, the power switch 7 is turned on, the service time of the calibrator is set through the key 6, the pressure source is communicated with the pressure interface of the sensor through a thin pipeline to form a closed pressure end, when the pressure of the system changes, the pressure sensor converts a corresponding pressure signal into a voltage signal and feeds the voltage signal back to the control system, so that the system is effectively controlled, the pressure value can be observed through the display screen 5, the convenience and the directness are realized, the pressure measured by the pressure gauge 15 for correction is the same as the pressure measured by the pressure sensor, and the accuracy of correction is ensured; when the readings of the pressure gauge 15 for correction are consistent with those of the pressure sensor, the accuracy of the pressure sensor can be judged; when the readings of the pressure gauge 15 for calibration and the pressure sensor are not consistent, it can be judged that the pressure sensor needs to be repaired or replaced.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.
Claims (5)
1. The utility model provides a full-automatic pressure switch of hydraulic turbine speed control system and pressure transmitter calibration equipment which characterized by: it includes button (6) on orifice plate formula installation piece (1) surface, button (6) top is equipped with switch (7), valve pipeline (3), the opening of sensor pipeline (8) and await measuring body interface pipeline (13) is located respectively on the different outer wall of orifice plate formula installation piece (1), valve pipeline (3), the central line of sensor pipeline (8) and await measuring body interface pipeline (13) is perpendicular with the outer wall of corresponding orifice plate formula installation piece (1), be equipped with low pressure sensor (10) and high pressure sensor (11) on orifice plate formula installation piece (1), low pressure sensor (10) are located high pressure sensor (11) left side.
2. The full-automatic pressure switch and pressure transmitter calibration device of the water turbine speed regulating system of claim 1, which is characterized in that: one end of the body interface pipeline (13) to be measured is provided with a fluorine injection nozzle (14), and the fluorine injection nozzle (14) is connected with a pressure gauge (15) for correction through a pressure pipe with a centre-of-push type joint.
3. The full-automatic pressure switch and pressure transmitter calibration device of the water turbine speed regulating system of claim 1, which is characterized in that: the valve pipeline (3), the sensor pipeline (8) and the interface pipeline (13) of the body to be measured are mutually vertical to the central line of the pipeline.
4. The full-automatic pressure switch and pressure transmitter calibration device of the water turbine speed regulating system of claim 1, which is characterized in that: and a sealing gasket (9) is used for sealing between the sensor pipeline (8) and the pressure sensor.
5. The full-automatic pressure switch and pressure transmitter calibration device of the water turbine speed regulating system of claim 1, which is characterized in that: the surface of the orifice plate type mounting block (1) is provided with a display screen (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121174959.9U CN215767485U (en) | 2021-05-28 | 2021-05-28 | Full-automatic pressure switch of hydraulic turbine speed control system and pressure transmitter calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121174959.9U CN215767485U (en) | 2021-05-28 | 2021-05-28 | Full-automatic pressure switch of hydraulic turbine speed control system and pressure transmitter calibration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215767485U true CN215767485U (en) | 2022-02-08 |
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ID=80098486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121174959.9U Active CN215767485U (en) | 2021-05-28 | 2021-05-28 | Full-automatic pressure switch of hydraulic turbine speed control system and pressure transmitter calibration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215767485U (en) |
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2021
- 2021-05-28 CN CN202121174959.9U patent/CN215767485U/en active Active
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