CN209940916U - TWLJ steam turbine oil temperature and pressure compensation oil filter - Google Patents
TWLJ steam turbine oil temperature and pressure compensation oil filter Download PDFInfo
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- CN209940916U CN209940916U CN201920060547.9U CN201920060547U CN209940916U CN 209940916 U CN209940916 U CN 209940916U CN 201920060547 U CN201920060547 U CN 201920060547U CN 209940916 U CN209940916 U CN 209940916U
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Abstract
A TWLJ turbine oil temperature and pressure compensation oil filter comprises a coarse filter tank, a heater, a vacuum tank and a fine filter tank which are sequentially connected through pipelines, wherein the vacuum tank is also communicated with a condenser; the method is characterized in that: the defoaming device is arranged in the vacuum tank, the side wall of the vacuum tank is provided with a detection hole, the coarse filtration tank and the fine filtration tank are communicated through a first return pipe and a second return pipe, the first return pipe is provided with an electromagnetic valve, and the second return pipe is provided with a manual valve. The problems that the steam turbine is lack of oil and the pressure in the fine filtering tank is large due to large oil viscosity in the oil filtering process of the oil filter are solved.
Description
Technical Field
The utility model relates to an oil filter, especially a TWLJ turbine oil temperature and pressure compensation oil filter.
Background
1. Thermal power plants, hydroelectric plants and pumped storage power stations all use steam turbines and water turbines as power to drive generators to generate electricity. High speed turbines (3000 rpm) and turbines are lubricated and cooled by turbine oil. Domestic turbine oil 32# and 46# are frequently selected as the internal lubricating oil of the steam turbine in China. The viscosity of the 32# oil is 35 (mm 2/s), and the viscosity of the 46# oil is 50 (mm 2/s), so that the oil becomes thinner or thicker along with the change of the oil temperature, and the oil circulation is increased or decreased. The temperature of the turbine oil (also called turbine oil) in the conveying pipeline is slower to flow, and the temperature of the turbine oil changes along with the change of the environment.
The hydraulic power plant and the energy storage power plant are both in the tunnel, and the room temperature is low and is generally 5-15 ℃. The temperature of the south power plant is higher than that of the north power plant.
The oil temperature of the steam (water) turbine is higher than that of the oil in the oil tank during operation. The oil temperature of the steam turbine is high during operation, and the oil quality is deteriorated because the operation needs lubrication, abrasion and heat dissipation, so that the oil quality is gradually aged. The operation of the steam turbine is influenced, so that the oil purifier for the steam turbine oil needs to be filtered and purified, and the oil quality reaches the quality index of the running steam turbine oil GB-7596-2008.
The current commonly used measure scheme is as follows: and detecting the deterioration of the oil quality, overhauling and replacing the deteriorated oil and the oil of the oil system on site, and then putting the deteriorated oil and the oil system into the operation of the steam turbine of the generator set after the deteriorated oil and the oil system are purified and filtered to be qualified. The following two cases are encountered in this process: 1. the temperature of the replaced poor steam turbine oil gradually drops and is lower than the room temperature; 2. the new oil of the oil company is replaced, the new oil needs to be detected first, purified by an oil filter to reach the standard and then input into an oil tank, and the oil changes with the indoor temperature before and after the work treatment.
The oil pumping, flushing and oil supplementing are also gradually changed along with the air temperature and the oil temperature of a working site. Because of the characteristics of turbine oil and high low-temperature viscosity, the oil has poor fluidity at the low oil temperature of 5-20 ℃ no matter the oil is transported or purified, so the following problems are caused in the oil filtration and purification: 1. when the vacuum oil filter is used for filtering treatment, the oil has poor fluidity, and the oil liquid is difficult to flow in an oil transfer pump and an inlet and outlet pipe and cannot smoothly enter an oil tank; 2. when the vacuum oil filter is used for filtering, the precision filter tank is large in resistance and low in oil filtering performance of the filter element, and the oil pump outlet is damaged due to the large pressure of a flange, a pipeline and the like under the condition that the pressure is larger than 4-12 kg/cm 2 (0.4-12 MPa); 3. although the inlet of the oil filter is provided with a heater pipe, the oil pipe passes through the heater too fast to heat to less than 5 ℃ per second, so the oil temperature requirement cannot be met at the initial running stage in the oil tank and the oil pipe, and the operation and the adjustment of the oil filter are difficult.
Disclosure of Invention
In order to solve the above problem, the utility model provides a following scheme:
a TWLJ turbine oil temperature and pressure compensation oil filter comprises a coarse filter tank, a heater, a vacuum tank and a fine filter tank which are sequentially connected through pipelines, wherein the vacuum tank is also communicated with a condenser; the defoaming device is arranged in the vacuum tank, the side wall of the vacuum tank is provided with a detection hole, the coarse filtration tank and the fine filtration tank are communicated through a first return pipe and a second return pipe, the first return pipe is provided with an electromagnetic valve, and the second return pipe is provided with a manual valve.
Furthermore, the number of the foam breakers is two, and the foam breakers are oppositely arranged on the inner side wall of the vacuum tank.
Further, the defoamer is a photoelectric defoamer.
Furthermore, the number of the inspection holes is two, and the inspection holes are respectively positioned on the upper half part and the lower half part of the side wall of the vacuum tank.
Furthermore, the fine filtering tank is provided with a pressure gauge and an exhaust valve.
Further, the first return pipe and the second return pipe are both phi 15-32 mm.
Oil enters a rough filtering tank from the lower part of the steam turbine oil tank through an oil inlet pipe for rough filtering, is heated by a heater to reduce the viscosity of the oil, enters a vacuum tank for dehydration and degassing treatment, flows into a fine filtering tank for fine filtering, and finally returns to the steam turbine oil tank from the upper part of the steam turbine oil tank through an oil outlet pipe.
When the oil temperature of the oil filter is low (5-10 ℃) at the initial operation stage, the viscosity of the oil is high, the oil cannot smoothly flow into the vacuum tank to cause oil shortage in the vacuum tank, and further when the oil flows into the fine filter tank for fine filtration treatment, the oil is deposited on a fine filter element in the fine filter tank and cannot normally circulate, and the oil cannot enter the oil due to the long length of an oil outlet pipe, so that the phenomenon of oil shortage is generated in the oil filter, the oil is deposited in the fine filter tank to cause the pressure of the fine filter tank to be too high (0.5-1.5MPa or more), and therefore, the oil needs to be continuously reheated to reduce the viscosity of the oil and to be defibered to.
When the phenomena of oil shortage and overlarge pressure of the fine filtration tank occur, the electromagnetic valve of the first return pipe is fully opened, oil in the fine filtration tank enters the coarse filtration tank through the first return pipe and the second return pipe, the pressure in the fine filtration tank is reduced, the oil is heated by the heater again, the temperature of the oil rises, the viscosity is reduced, the oil flows smoothly, the phenomenon of oil shortage of the vacuum tank is reduced, and the pressure in the fine filtration tank is reduced.
And if the electromagnetic valve of the first full-open return pipe is still lack of oil and the pressure of the fine filter tank is still high, the manual valve of the second return pipe is opened, and the oil flow is adjusted. The pressure of the fine filter tank is lower than 0.3 MPa.
And during the middle stage of oil filtering operation, the oil temperature at the inlet of the coarse filtering tank is about 29-40 ℃, when the oil engine normally operates, the electromagnetic valve of the first return pipe is closed, and the manual valve of the second return pipe finely adjusts the oil mass pressure so as to keep the pressure of the fine filtering tank at about 0-0.3 MPa.
Meanwhile, a pair of photoelectric automatic defoamers is arranged in the vacuum tank, so that the problem that excessive oil vapor bubbles enter a vacuum pump for oil injection due to the fact that oil gas protrudes out of a multi-bubble film and rises when the vacuum tank is heated during operation is solved.
So adopt to heat to fluid circulation, and dredge the pressure that produces that the siltation fluid in the essence filter tank was solved and is accomplished the filterable task of fluid, solved the defect that low temperature oil filter used, make the normal purification treatment of steam turbine oil, and guarantee that fluid treatment is qualified.
The utility model has the advantages that:
1. when the oil temperature is low, the viscosity is high, the oil is lack, and the pressure of the fine filtration tank is high, the return pipe is opened to reheat the oil, the pressure in the fine filtration tank is reduced, the operation can be smooth until the temperature is reached, the equipment is protected, the work risk is reduced, and the oil filtration efficiency is increased.
2. A defoamer is added in the vacuum tank, so that the problem that oil bubbles in the vacuum tank enter the vacuum pump to spray oil is solved.
Drawings
Fig. 1 is a schematic view of the utility model.
In the figure: 1. a coarse filtration tank; 2. a heater; 3. a vacuum tank; 4. a photoelectric defoamer; 5. a sight hole; 6. a condensing tank; 7. a water collection tank; 8. a first oil return pipe; 9. an oil return pipe II; 10. a fine filtration tank; a pressure gauge; 12. an oil inlet pipe; 13. an oil outlet pipe; 14. the oil return pipe is provided with an electromagnetic valve; 15. a manual valve of the oil return pipe; 16. an oil outlet sampling valve; 17. an oil inlet sampling valve; 18. a steam turbine oil sump; 19. an inlet solenoid valve of the vacuum tank; 20. a vacuum pump; 21. an oil transfer pump.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Example 1: as shown in figure 1 of the drawings, in which,
a TWLJ turbine oil temperature and pressure compensation oil filter comprises a rough filtering tank 1, a heater 2, a vacuum tank 3 and a fine filtering tank 10 which are sequentially connected through pipelines, wherein a vacuum tank inlet electromagnetic valve 19 is arranged between the vacuum tank 3 and the heater 2, the vacuum tank 3 is also communicated with a condenser 6, the condenser 6 is connected with an oil collecting water tank 7 in a lower mode, the oil collecting water tank 7 is communicated with the vacuum tank 3, the rear end of the oil collecting water tank 7 is also connected with a vacuum pump 20, the fine filtering tank 10 is communicated with an oil outlet pipe 13, the rough filtering tank 1 is also communicated with an oil inlet pipe 12, the oil inlet pipe 12 and the oil outlet pipe 13 are both communicated with a turbine oil tank 18, the oil inlet pipe 12 is provided with a manual oil inlet valve, and the oil outlet pipe 13 is; the vacuum tank inlet is provided with a vacuum tank inlet electromagnetic valve 19, the inner wall of the vacuum tank 3 is provided with two photoelectric defoamers 4, the upper part and the lower part of the side wall of the vacuum tank 3 are provided with inspection holes 5, the lower half part of the coarse filtration tank 1 is communicated with the lower half part of the fine filtration tank 10 through a first return pipe 8 and a second return pipe 9, the first return pipe 8 and the second return pipe 9 are phi 15-32 mm, the first return pipe 8 is provided with a first return pipe electromagnetic valve 14, and the second return pipe 9 is provided with a second return pipe manual valve 15. The fine filtering tank 10 is provided with a pressure gauge 11 and an exhaust valve.
Oil enters the coarse filtration tank 1 through the oil inlet pipe 12 from the lower part of the turbine oil tank 18 for coarse filtration, is heated through the heater 2, reduces the viscosity of the oil, enters the vacuum tank 3 for dehydration and degassing treatment, enters the fine filtration tank 10 through the oil transfer pump 21 for fine filtration, and finally returns to the turbine oil tank 18 from the upper part of the turbine oil tank 18 through the oil outlet pipe 13.
When the oil temperature of the oil filter is low (5-10 ℃) at the initial operation stage, the viscosity of the oil is high, the oil cannot smoothly flow into the vacuum tank 3, so that the oil is lack of oil in the vacuum tank 3, and further, when the oil flows into the fine filter tank 10 for fine filtration treatment, the oil is deposited on a fine filter element in the fine filter tank 10 and cannot normally flow, the phenomenon of oil lack is generated in the oil filter, the oil is deposited in the fine filter tank 10, so that the pressure of the fine filter tank 10 is too high (0.5-1.5MPa or more), and therefore, the oil needs to be continuously reheated to reduce the viscosity of the oil and the pressure in the fine filter tank 10 needs to be.
When the phenomena of oil shortage and overlarge pressure of the fine filtration tank 10 occur, the electromagnetic valve 14 of the first return pipe is fully opened, oil liquid in the fine filtration tank 10 enters the coarse filtration tank 1 through the first return pipe 8 and the second return pipe 9, the pressure in the fine filtration tank 10 is reduced, the oil liquid is heated through the heater 2 again, the temperature of the oil liquid is increased, the viscosity is reduced, the oil liquid flows smoothly, the phenomenon of oil shortage of an oil filter is relieved, and the pressure in the fine filtration tank 10 is reduced.
If the electromagnetic valve 14 of the full-open return pipe is still lack of oil and the pressure of the fine filtering tank 10 is still high, the manual valve 15 of the return pipe is opened, and the oil flow is adjusted. The pressure of the fine filtering tank 10 is lower than 0.3 MPa.
During the middle stage of oil filtering operation, the oil temperature at the inlet of the coarse filtering tank 1 is about 29-40 ℃, when the oil engine normally operates, the electromagnetic valve 14 of the return pipe is closed, and the manual valve 15 of the return pipe finely adjusts the oil mass pressure so as to keep the pressure of the fine filtering tank 10 at about 0-0.3 MPa.
Meanwhile, a pair of photoelectric automatic defoamers 4 is arranged in the vacuum tank 3, so that the problem that excessive oil vapor bubbles enter the vacuum pump 8 for oil injection due to the fact that oil gas protrudes and multiple foams rise when the vacuum tank 3 is heated during operation is solved.
The oil is heated circularly, and the pressure generated by the oil deposited in the fine filtration tank 10 is dispersed to complete the oil filtration task, so that the defect of using a low-temperature oil filter is overcome, the normal purification treatment of the steam turbine oil is realized, and the qualified oil treatment is ensured.
Finally, it should be noted that the above-mentioned list is only a specific embodiment of the present invention. It is obvious that the present invention is not limited to the above embodiments, but many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (6)
1. A TWLJ turbine oil temperature and pressure compensation oil filter comprises a coarse filter tank, a heater, a vacuum tank and a fine filter tank which are sequentially connected through pipelines, wherein the vacuum tank is also communicated with a condenser; the method is characterized in that: the defoaming device is arranged in the vacuum tank, the side wall of the vacuum tank is provided with a detection hole, the coarse filtration tank and the fine filtration tank are communicated through a first return pipe and a second return pipe, the first return pipe is provided with an electromagnetic valve, and the second return pipe is provided with a manual valve.
2. The TWLJ turbine oil temperature and pressure compensation oil filter of claim 1, wherein: the defoaming device is two and is oppositely arranged on the inner side wall of the vacuum tank.
3. The TWLJ turbine oil temperature and pressure compensation oil filter of claim 2, wherein: the defoamer is a photoelectric defoamer.
4. The TWLJ turbine oil temperature and pressure compensation oil filter of claim 1, wherein: the inspection holes are two and are respectively positioned on the upper half part and the lower half part of the side wall of the vacuum tank.
5. The TWLJ turbine oil temperature and pressure compensation oil filter of claim 1, wherein: the fine filtering tank is provided with a pressure gauge and an exhaust valve.
6. The TWLJ turbine oil temperature and pressure compensation oil filter of claim 1, wherein: the first return pipe and the second return pipe are both phi 15-32 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920060547.9U CN209940916U (en) | 2019-01-15 | 2019-01-15 | TWLJ steam turbine oil temperature and pressure compensation oil filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920060547.9U CN209940916U (en) | 2019-01-15 | 2019-01-15 | TWLJ steam turbine oil temperature and pressure compensation oil filter |
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| Publication Number | Publication Date |
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| CN209940916U true CN209940916U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920060547.9U Active CN209940916U (en) | 2019-01-15 | 2019-01-15 | TWLJ steam turbine oil temperature and pressure compensation oil filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483222A (en) * | 2022-01-26 | 2022-05-13 | 连云港透平能源设备有限公司 | Large energy-saving oil filter for processing turbine oil for power plant |
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2019
- 2019-01-15 CN CN201920060547.9U patent/CN209940916U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483222A (en) * | 2022-01-26 | 2022-05-13 | 连云港透平能源设备有限公司 | Large energy-saving oil filter for processing turbine oil for power plant |
| CN114483222B (en) * | 2022-01-26 | 2023-06-20 | 连云港透平能源设备有限公司 | Large energy-saving oil filter for treating turbine oil for power plant |
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