CN214121340U - Liquid level measuring system - Google Patents
Liquid level measuring system Download PDFInfo
- Publication number
- CN214121340U CN214121340U CN202022445972.5U CN202022445972U CN214121340U CN 214121340 U CN214121340 U CN 214121340U CN 202022445972 U CN202022445972 U CN 202022445972U CN 214121340 U CN214121340 U CN 214121340U
- Authority
- CN
- China
- Prior art keywords
- liquid level
- oil tank
- level measuring
- oil
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model provides a level measurement system especially relates to a level measurement system of turbine lubricating-oil tank. The system comprises an oil tank, an oil supply pipe and an oil return pipe which are communicated with the oil tank respectively, and further comprises a liquid level measuring pipe arranged outside the oil tank, wherein the oil tank is communicated with a pipeline below the liquid level measuring pipe. The system solves the problems of more foams and large liquid level fluctuation of the turbine lubricating oil tank in the liquid level measurement process, improves the accuracy and stability of the measurement result, has a simple structure, is convenient to operate, and is suitable for large-scale popularization and application.
Description
Technical Field
The utility model relates to a level measurement system especially relates to a level measurement system of turbine lubricating-oil tank.
Background
At present, the common method for measuring the liquid level of a lubricating oil tank of a steam turbine in a power plant is to open a hole on the top cover of an oil tank clean oil area, install a flange, install an oil level gauge capable of continuously measuring on line in real time, remotely transmit the measuring result to a control room computer for monitoring by an operator on duty, and simultaneously, the signal is used for alarming and protecting. When the computer detects that the measured value is higher than the alarm value, an alarm signal of abnormal oil level of the lubricating oil tank is popped up on the computer; when the measured value is further deteriorated and reaches a tripping value which cannot be tolerated by the unit, the protection loop is triggered to act, and the steam turbine is stopped.
The conventional measurement mode has the defect that the lubricating oil tank is always in a continuous oil inlet and return working state when the oil pump runs because the oil outlet pipe and the oil return pipe are arranged at the top of the oil tank. The liquid level in the oil tank fluctuates greatly, the foam is more, and the measurement of the oil level gauge is greatly disturbed.
In view of this, the present application is specifically made.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a liquid level measurement system has solved the problem that the steam turbine lubricating-oil tank is many, the liquid level fluctuation is big in the liquid level measurement in-process foam, has improved measuring result's accuracy and stability, simple structure, and convenient operation is suitable for extensive popularization and application.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a liquid level measurement system, include the oil tank, respectively with the oil feed pipe and the time oil pipe of oil tank intercommunication still including locating the outside liquid level measurement pipe of oil tank, the oil tank with pipeline intercommunication below the liquid level measurement pipe introduces lubricating oil measure in the liquid level measurement pipe, can avoid liquid foam's influence like this, reduce the measuring error that the liquid level fluctuation brought simultaneously.
Furthermore, the upper part of the oil tank is also provided with an upper pipeline communicated with the liquid level measuring pipe.
Preferably, the upper and lower pipelines are respectively provided with a shut-off valve for introducing lubricating oil into the level measuring pipe to discharge oil containing impurities.
The oil tank is internally provided with a transverse partition plate, the opening of the oil return pipe in the oil tank is arranged above the transverse partition plate, and the transverse partition plate is provided with a communicating hole.
Further, the communication hole is a cylindrical hole perpendicular to the diaphragm.
Furthermore, the diameter of the upper end opening of the cylindrical hole is larger than that of the lower end opening, or the cylindrical hole is a special-shaped cylindrical hole with a thin middle part and a thick upper end. The cylindrical hole with the shape enables liquid flow to be disturbed along the periphery of the cylindrical hole basically when the oil return pipe returns oil, liquid entering the lower portion of the diaphragm plate cannot be disturbed, and measuring errors caused by liquid level fluctuation are further reduced.
Preferably, the upper end of the liquid level measuring pipe is connected with a guided wave radar liquid level meter, and a measuring probe rod of the guided wave radar liquid level meter is arranged in the liquid level measuring pipe.
More preferably, the liquid level measuring tube is connected with 3 guided wave radar liquid level meters, and the median of three measuring results is obtained in a computer, so that misleading to operation monitoring personnel due to the fault of one liquid level meter is avoided.
And an oil drainage port is arranged at the lower end of the liquid level measuring pipe.
According to the liquid level measuring system, the liquid level measuring tube is arranged outside the oil tank, lubricating oil is introduced into the liquid level measuring tube for measurement, and the influence of liquid foam when the lubricating oil is directly measured in the oil tank is avoided; meanwhile, the transverse partition plate with the opening is arranged in the oil tank, so that errors caused by liquid level fluctuation are further avoided, the accuracy and the stability of a measuring result are improved, the structure is simple, the operation is convenient, and the device is suitable for large-scale popularization and application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is the structural schematic diagram of the liquid level measuring system of the present invention.
Description of reference numerals:
1. an oil tank; 2. a diaphragm plate; 3. an oil supply pipe; 4. an oil return pipe; 5. a liquid level measuring tube; 6. a guided wave radar level gauge; 7. a lower pipeline; 8. an upper pipeline; 9. an oil drainage port; 10. a cylindrical bore.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
Example 1
The utility model provides a liquid level measurement system, as shown in figure 1, including oil tank 1, respectively with the oil feed pipe 3 and the time oil pipe 4 of oil tank 1 intercommunication, still including locating oil tank 1 outside liquid level survey buret 5, oil tank 1 and the following pipeline 7 intercommunication of liquid level survey buret 5 are measured in introducing liquid level survey buret 5 with lubricating oil, can avoid liquid foam's influence like this, reduce the measuring error that the liquid level fluctuation brought simultaneously. In this embodiment, the upper portion of the oil tank 1 is further provided with an upper pipeline 8 communicated with the liquid level measuring pipe 5.
Go up and be equipped with DN25 PN1.0MPa's stop valve on pipeline 8 and the lower pipeline 7 respectively for in introducing liquid level measurement pipe 5 with lubricating oil, liquid level measurement pipe 5 lower extreme is equipped with draining port 9, is equipped with the blowdown stop valve on draining port 9, with the oil that discharges the impurity that influences measurement accuracy.
In this embodiment, the transverse partition plate 2 is arranged inside the oil tank 1, and the pipe orifice of the oil return pipe 4 located in the oil tank 1 is arranged above the transverse partition plate 2. Meanwhile, the diaphragm plate 2 is provided with a cylindrical hole 10 vertical to the diaphragm plate 2. The cylindrical hole 10 is a special-shaped cylindrical hole having an upper end opening diameter larger than a lower end opening diameter. The cylindrical hole 10 with the shape enables liquid flow to be disturbed along the periphery of the cylindrical hole 10 basically when the oil return pipe 4 returns oil, liquid entering the lower portion of the diaphragm plate 2 cannot be disturbed, and measuring errors caused by liquid level fluctuation during oil return are further reduced.
The upper end of the liquid level measuring pipe 5 is in threaded connection with a guided wave radar liquid level meter 6, and a measuring probe rod of the guided wave radar liquid level meter 6 is arranged in the liquid level measuring pipe 5.
Claims (6)
1. A liquid level measuring system comprises an oil tank, an oil supply pipe and an oil return pipe which are respectively communicated with the oil tank, and is characterized by also comprising a liquid level measuring pipe arranged outside the oil tank, wherein the oil tank is communicated with a pipeline below the liquid level measuring pipe; the upper part of the oil tank is also provided with an upper pipeline communicated with the liquid level measuring pipe; a transverse partition plate is arranged inside the oil tank; the pipe orifice of the oil return pipe in the oil tank is arranged above the diaphragm plate; the diaphragm plate is provided with a communicating hole.
2. The fluid level measurement system of claim 1, wherein the communication hole is a cylindrical hole perpendicular to the diaphragm.
3. The fluid level measurement system of claim 2, wherein the cylindrical bore has an upper end opening diameter that is greater than a lower end opening diameter.
4. The fluid level measuring system of claim 3, wherein the cylindrical bore is a contoured cylindrical bore having a thin middle and a thick upper end.
5. A liquid level measuring system according to any one of claims 1-4, characterized in that a guided wave radar level gauge is attached to the liquid level measuring tube.
6. A liquid level measuring system according to claim 5, characterized in that the liquid level measuring tube is provided with a drain opening at its lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022445972.5U CN214121340U (en) | 2020-10-28 | 2020-10-28 | Liquid level measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022445972.5U CN214121340U (en) | 2020-10-28 | 2020-10-28 | Liquid level measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214121340U true CN214121340U (en) | 2021-09-03 |
Family
ID=77500925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022445972.5U Active CN214121340U (en) | 2020-10-28 | 2020-10-28 | Liquid level measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214121340U (en) |
-
2020
- 2020-10-28 CN CN202022445972.5U patent/CN214121340U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2595714B1 (en) | Sound-velocity based control of a hydrocarbon dewatering system | |
| CN1273342A (en) | Method and device for monitoring and locating leakage of fluid delivering pipeline | |
| CN214121340U (en) | Liquid level measuring system | |
| CN111255701B (en) | Low-pressure leakage flow measuring device and method for shaft seal pump for nuclear power plant | |
| CN205670004U (en) | A kind of water-pipe type settlement instrument | |
| CN201886789U (en) | Flowmeter for main pump seal leakage flow | |
| CN215767269U (en) | Oil level detection device in transformer conservator | |
| CN202994400U (en) | Box gas leakage detector | |
| CN111192697A (en) | Leakage alarm detection system based on siphon principle | |
| CN213808033U (en) | Metering pump performance testing device with flow calibration function | |
| CN114397239A (en) | Device for on-line monitoring of microorganisms in fluid | |
| CN204881965U (en) | Pressure transmitter's installation device among sewage treatment | |
| CN112067200A (en) | Pressure pipeline inspection and detection device | |
| CN219347918U (en) | Double-flange differential pressure liquid level meter on-line checking device | |
| CN206830427U (en) | The low discharge measurement apparatus of 1000MW reactor coolant pumps sealing leakage | |
| CN205027419U (en) | Flow sensor testing platform | |
| CN220365545U (en) | Drilling outlet flow monitoring and well control overflow leakage early warning system groove body assembly | |
| CN206974598U (en) | Pressure tester and equipment for liquid transportation | |
| CN212586751U (en) | Purified water liquid level control device | |
| CN205602484U (en) | Fuel bumping warning emergency treatment equipment | |
| CN213688565U (en) | Be applied to two level gauge devices of heavy hydrocarbon knockout drum | |
| CN116733396B (en) | Drilling outlet flow monitoring and well control overflow and leakage early warning system and method | |
| CN217765143U (en) | Power station water leads oil groove and goes up oil level measuring device | |
| CN219736457U (en) | Inserted pipeline center measuring flow Li Tuoba sensor | |
| CN213478797U (en) | Single-acting bypass valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |