CN210768951U - Steam turbine main fuel tank oil level monitoring protection device - Google Patents
Steam turbine main fuel tank oil level monitoring protection device Download PDFInfo
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- CN210768951U CN210768951U CN201921021445.2U CN201921021445U CN210768951U CN 210768951 U CN210768951 U CN 210768951U CN 201921021445 U CN201921021445 U CN 201921021445U CN 210768951 U CN210768951 U CN 210768951U
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Abstract
The utility model discloses a steam turbine main fuel tank oil level monitoring protection device, include: oil level sensor probe, logic electronic controller, control cable, main oil tank, its characterized in that: three holes are punched in a cover plate at the top of the main oil tank, and an oil level sensor probe is additionally installed and fixed; the oil level sensor probe is respectively connected with the input end of the logic electronic controller through a control cable; the oil level sensor probe adopts a logical judgment mode of two out of three, and the logical electronic controller sends out 4-20mA current to detect the oil level through electromagnetic waves. Each connecting part is reliable and firm in sealing, has no leakage point and is good in cable contact. The oil level sensor probe monitors the oil level data of the main oil tank, is connected through a high-strength cable, is reliable, safe and quick, and is transmitted to the logic electronic controller and connected to a steam turbine CRT protection system to play a monitoring and protecting role.
Description
Technical Field
The utility model relates to a turbine lubricating oil system technical field, in particular to turbine main fuel tank oil level monitoring protection device.
Background
At present, the top of a main oil tank of a 320MW thermal power generating unit in an east turbine plant is provided with a floating ball type sensing oil level indicator, but under the influence of negative pressure of the main oil tank, the oil level display deviation is large, the actual oil level display is inaccurate, and although an operator can monitor the oil level through sensing, the operator cannot determine the true shutdown protection oil level.
The display mode is similar to the principle that the monitoring and protecting device is additionally arranged at the top of the main oil tank; the improved main oil tank oil level monitoring and protecting device adopts a three-out-of-two logic judgment mode, a logic electronic control cabinet sends 4-20mA current, the oil level is detected through electromagnetic waves, high-strength cables are connected, the actual operating oil level of the main oil tank of the steam turbine is reliably, safely and quickly displayed, the operation of the steam turbine is quickly interrupted under the condition of low oil level accidents, and the protection effect is achieved on the safe and reliable operation of a lubricating oil system of a unit.
Disclosure of Invention
An object of the utility model is to overcome prior art not enough, and provide a safety, swift, accurate steam turbine main fuel tank actual motion oil level that shows, under the low oil level accident condition, the fast interdiction steam turbine operation plays guard action's steam turbine main fuel tank oil level monitoring protection device to unit lubricating oil system safety, reliable operation.
In order to achieve the purpose, the utility model adopts the following technical scheme: a steam turbine main oil tank oil level monitoring protection device includes: oil level sensor probe, logic electronic controller, control cable, main oil tank, its characterized in that: three holes are punched in a cover plate at the top of the main oil tank, and an oil level sensor probe is additionally installed and fixed; the oil level sensor probe is respectively connected with the input end of the logic electronic controller through a control cable; the oil level sensor probe adopts a logical judgment mode of two out of three, and the logical electronic controller sends out 4-20mA current to detect the oil level through electromagnetic waves. Each connecting part is reliable and firm in sealing, has no leakage point and is good in cable contact. The electronic controller can be any type, and the logic controller is an IDG0124RCL type logic controller produced by Siemens company; the fuel level sensor probe may be of any type, and the application uses an XZZTUT-81 series tank fuel level sensor in the Kyoho state.
The utility model discloses following technological effect has: the oil level sensor probe monitors the oil level data of the main oil tank, is connected through a high-strength cable, is reliable, safe and quick, and is transmitted to the logic electronic controller and connected to a steam turbine CRT protection system to play a monitoring and protecting role.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention.
Detailed Description
For better understanding of the technical solutions of the present invention, the following detailed description of the embodiments provided in the present invention is provided with reference to the accompanying drawings.
A steam turbine main oil tank oil level monitoring protection device includes: the oil level sensor comprises an oil level sensor probe, a logic electronic controller, a control cable and a main oil tank.
In the above embodiment, more specifically, as shown in fig. 1, the oil level monitoring and protecting device for the main oil tank of the steam turbine utilizes a unit maintenance opportunity to detach the top cover plate of the main oil tank 101, open a hole, and install the oil level sensor probes 102, 103, 104 on the top of the main oil tank; the logical electronic controller 109 is connected with the control cables 105, 106, 107 and 108, all the connecting parts are reliable and firm in sealing, have no leakage points, are good in cable contact and high in insulation strength, and meet the technical requirements of field position installation of the main oil tank oil level monitoring and protecting device. The oil level sensor probe monitors the oil level data of the main oil tank, is connected through a high-strength cable, is reliable, safe and quick, and is transmitted to the logic electronic controller 109 and connected to a steam turbine CRT protection system to play a monitoring and protecting role.
After the installation is finished, the improved main oil tank oil level monitoring and protecting device is comprehensively checked, thermal control technicians are used for debugging signals and modifying main oil tank oil level protecting logics, the oil level of lubricating oil of the main oil tank is accurately monitored and displayed, accident oil level signals are simulated, a unit is shut down in a breaking mode, and the fact that the installed main oil tank oil level monitoring and protecting device achieves the expected improvement effect is shown, and the success of the improvement is shown.
It is right above the embodiment of the utility model provides a steam turbine main oil tank oil level monitoring protection device introduces in detail, to the general technical personnel in this field, the foundation the utility model discloses the thought, all have the change part on concrete implementation mode and application scope, to sum up, this specification content should not be understood as right the utility model discloses a restriction.
Claims (3)
1. A steam turbine main oil tank oil level monitoring protection device includes: oil level sensor probe, logic electronic controller, control cable, main oil tank, its characterized in that: three holes are punched in a cover plate at the top of the main oil tank, and an oil level sensor probe is additionally installed and fixed; the oil level sensor probe is respectively connected with the input end of the logic electronic controller through a control cable; the oil level sensor probe adopts a logical judgment mode of two out of three, and the logical electronic controller sends out 4-20mA current to detect the oil level through electromagnetic waves.
2. The turbine main oil tank oil level monitoring and protecting device according to claim 1, characterized in that: the electronic controller is an IDG0124RCL type logic controller manufactured by Siemens company.
3. The turbine main oil tank oil level monitoring and protecting device according to claim 1, characterized in that: the fuel level sensor probe is an XZZTUT-81 series tank fuel level sensor in the Kyoho state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921021445.2U CN210768951U (en) | 2019-07-03 | 2019-07-03 | Steam turbine main fuel tank oil level monitoring protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921021445.2U CN210768951U (en) | 2019-07-03 | 2019-07-03 | Steam turbine main fuel tank oil level monitoring protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210768951U true CN210768951U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921021445.2U Active CN210768951U (en) | 2019-07-03 | 2019-07-03 | Steam turbine main fuel tank oil level monitoring protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN210768951U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12078523B2 (en) | 2022-07-05 | 2024-09-03 | Caterpillar Inc. | Predicting track assembly component failure using direct oil contact sensor device |
-
2019
- 2019-07-03 CN CN201921021445.2U patent/CN210768951U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12078523B2 (en) | 2022-07-05 | 2024-09-03 | Caterpillar Inc. | Predicting track assembly component failure using direct oil contact sensor device |
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