CN213482717U - Automatic pressure adjusting system for lubricating oil tank of gas turbine - Google Patents
Automatic pressure adjusting system for lubricating oil tank of gas turbine Download PDFInfo
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- CN213482717U CN213482717U CN202022935568.6U CN202022935568U CN213482717U CN 213482717 U CN213482717 U CN 213482717U CN 202022935568 U CN202022935568 U CN 202022935568U CN 213482717 U CN213482717 U CN 213482717U
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- oil tank
- smoke exhaust
- lubricating oil
- pressure
- pipeline
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 93
- 239000000779 smoke Substances 0.000 claims abstract description 91
- 230000001105 regulatory effect Effects 0.000 claims abstract description 71
- 239000010723 turbine oil Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 29
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 7
- 239000003517 fume Substances 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The embodiment of the utility model provides an automatic pressure regulating system for a lubricating oil tank of a gas turbine, wherein a smoke outlet of the lubricating oil tank is connected with a main smoke exhaust pipeline; a plurality of paths of smoke exhaust branch pipelines are led out from the smoke exhaust main pipeline; the smoke exhaust branch pipeline is provided with a smoke exhaust fan; an electric regulating valve is arranged on the main smoke exhaust pipeline; a pressure measuring point is arranged on the lubricating oil tank, and the actual pressure value in the lubricating oil tank is monitored; the control system is electrically connected with the signal output end of the pressure measuring point, the control system is electrically connected with the control end of the electric regulating valve, and the pressure of the lubricating oil tank is adjusted by regulating the opening degree of the electric regulating valve. The utility model discloses a set up the mode of electrical control valve on the trunk line of discharging fume, more nimble, the reaction is faster, when carrying out lubricating-oil tank pressure adjustment in gas turbine operation process, can long-range real-time continuous adjustment, need not to carry out artificial manual operation on the spot, removed the frequent artifical manual valve operation in scene from, improved lubricating-oil tank pressure adjustment's accuracy nature and promptness, it is safer.
Description
Technical Field
The utility model relates to a gas turbine technical field particularly, relates to a gas turbine lubricating-oil tank pressure automatic regulating system.
Background
The large gas turbines of modern power stations are equipped with special lubricating oil tanks, which are used as oil storage equipment for gas turbine lubricating oil and also as intermediate containers for oil fume recovery and centralized emission. When the gas turbine operates, the smoke exhaust fan is used for continuously extracting smoke in the lubricating oil tank so as to maintain the negative pressure environment in the lubricating oil tank and ensure smooth oil return of bearing lubricating oil and good bearing sealing. During load fluctuations of the combustion engine, the lubricating oil tank pressure fluctuates considerably. When the pressure in the lubricating oil tank of the gas turbine deviates from the qualified range, the opening of a manual valve at the inlet of the fan needs to be manually adjusted on the spot to adjust the smoke discharge amount of the smoke discharge fan, so that the pressure in the lubricating oil tank is recovered to be qualified. The heavy-duty gas turbine is often used as a peak shaving unit due to the flexible characteristic, the load is frequently adjusted during normal operation, so that the operator of the unit needs to frequently adjust the opening of the manual valve on the spot to maintain the stability of the negative pressure in the lubricating oil tank, and the delay of the negative pressure adjustment is caused. On the other hand, the manual valve has low operation regulation precision, and the qualified range can be reached by regulating the manual valve back and forth for multiple times.
Therefore, it is necessary to design an automatic pressure regulating system for a lubricating oil tank of a gas turbine to solve the above problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The present specification provides an automatic gas turbine lubrication tank pressure regulation system to overcome at least one technical problem in the prior art.
According to the embodiment of the specification, the automatic pressure adjusting system for the lubricating oil tank of the gas turbine is provided, and comprises the lubricating oil tank, a main smoke exhaust pipeline, an electric adjusting valve, a smoke exhaust branch pipeline, a smoke exhaust fan, a fan inlet manual door, a discharge pipeline, a pressure measuring point and a control system; wherein:
the smoke outlet of the lubricating oil tank is connected with the main smoke exhaust pipeline; a plurality of paths of smoke exhaust branch pipelines are led out from the main smoke exhaust pipeline; the smoke exhaust fan is arranged on the smoke exhaust branch pipeline; the smoke exhaust branch pipeline at the inlet of the smoke exhaust fan is provided with the fan inlet manual door; the multiple paths of smoke exhaust branch pipelines are converged and then are communicated with the discharge pipeline together; the electric regulating valve is installed on the main smoke exhaust pipeline; the lubricating oil tank is provided with the pressure measuring point, and an actual pressure value in the lubricating oil tank is monitored; the control system is electrically connected with the signal output end of the pressure measuring point, the control system is electrically connected with the control end of the electric regulating valve, and the pressure of the lubricating oil tank is adjusted by regulating the opening degree of the electric regulating valve.
Optionally, the control system includes a proportional-integral module, the proportional-integral module calculates an opening instruction of the electric regulating valve according to a difference between an actual pressure value and a pressure set value of the lubricating oil tank, and the control system transmits the opening instruction to a control end of the electric regulating valve to regulate the opening of the electric regulating valve.
Optionally, the automatic pressure regulating system further comprises a fan outlet check valve, and the fan outlet check valve is arranged at the outlet of the smoke exhaust fan and on the smoke exhaust branch pipeline.
Optionally, the control end of the smoke exhaust fan is electrically connected with the control system.
Optionally, the number of the smoke exhaust branch pipes is two.
The beneficial effects of the embodiment of the specification are as follows:
the utility model discloses a set up electric control valve's mode on the trunk line of discharging fume, start at gas turbine generating set, stop and go up and down the load in-process, if gas turbine lubricating-oil tank pressure changes, carry out the comparison with lubricating-oil tank's actual pressure value and set pressure value, automatically regulated electric control valve's aperture when pressure is higher than or is less than set pressure value, with the stability of control lubricating-oil tank pressure, if automatically regulated can't drop into, still accessible remote control manual regulation electric control valve's aperture, adjust lubricating-oil tank pressure. The automatic pressure regulating system is more flexible and quicker in reaction, can be remotely and continuously regulated in real time when the pressure of the lubricating oil tank is regulated in the running process of the gas turbine, does not need manual operation on the spot, removes frequent manual valve operation on the spot, improves the accuracy and timeliness of pressure regulation of the lubricating oil tank, and is safer.
The innovation points of the embodiment of the specification comprise:
1. in this embodiment, the mode that sets up electrical control valve on the trunk line of discharging fume is adopted, and at gas turbine generating set start, stop and lift load in-process, if gas turbine lubricating oil tank pressure changes, carry out the comparison with the set pressure value with the actual pressure value of lubricating oil tank, automatically regulated electrical control valve's aperture when the pressure is higher than or is less than the set pressure value to control the stability of lubricating oil tank pressure, be one of the innovation point of this specification embodiment.
2. In the embodiment, the opening of the electric regulating valve can be manually regulated through remote control to regulate the pressure of the lubricating oil tank, manual operation on the spot is not needed, frequent manual valve operation on the spot is avoided, and the method is one of the innovation points of the embodiment of the specification.
3. In the embodiment, the pressure regulation device is more flexible and quicker in response, can be used for remotely and continuously regulating the pressure of the lubricating oil tank in real time when the pressure of the lubricating oil tank is regulated in the running process of the gas turbine, does not need manual operation on the spot, avoids frequent manual valve operation on the spot, improves the accuracy and timeliness of the pressure regulation of the lubricating oil tank, is safer, and is one of the innovation points of the embodiment of the specification.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an automatic pressure regulating system for a lubricating oil tank of a gas turbine according to an embodiment of the present disclosure;
in the figure, 1 is a lubricating oil tank, 2 is a main smoke exhaust pipeline, 3 is an electric regulating valve, 4 is a smoke exhaust branch pipeline, 5 is a smoke exhaust fan, 6 is a fan inlet manual door, 7 is a discharge pipeline, 8 is a pressure measuring point, 9 is a control system, and 10 is a fan outlet check valve.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
It should be noted that the terms "including" and "having" and any variations thereof in the embodiments of the present specification and the drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the specification discloses an automatic pressure adjusting system for a lubricating oil tank of a gas turbine. The following are detailed below.
Fig. 1 is a diagram illustrating an automatic pressure regulating system for a lubricating oil tank of a gas turbine according to an embodiment of the present disclosure. As shown in fig. 1, the automatic pressure regulating system comprises a lubricating oil tank 1, a main smoke exhaust pipeline 2, an electric regulating valve 3, a branch smoke exhaust pipeline 4, a smoke exhaust fan 5, a fan inlet manual door 6, a discharge pipeline 7, a pressure measuring point 8 and a control system 9; the smoke exhaust port of the lubricating oil tank 1 is connected with the main smoke exhaust pipeline 2; a plurality of paths of smoke exhaust branch pipelines 4 are led out from the main smoke exhaust pipeline 2; the smoke exhaust fan 5 is arranged on the smoke exhaust branch pipe 4; the smoke exhaust branch pipeline 4 at the inlet of the smoke exhaust fan 5 is provided with the fan inlet manual door 6; the plurality of paths of smoke exhaust branch pipelines 4 are converged and then are communicated with the discharge pipeline 7 together; the electric regulating valve 3 is installed on the main smoke exhaust pipeline 2; the lubricating oil tank 1 is provided with the pressure measuring point 8 for monitoring the actual pressure value in the lubricating oil tank 1; the control system 9 is electrically connected with a signal output end of the pressure measuring point 8, the control system 9 is electrically connected with a control end of the electric regulating valve 3, and the pressure of the lubricating oil tank 1 is adjusted by regulating the opening degree of the electric regulating valve 3.
The embodiment of the utility model provides an in gas turbine lubricating-oil tank pressure automatically regulated system maintains the negative pressure environment in lubricating-oil tank 1 through configuration smoke exhaust fan 5 to but install automatically regulated's electrical control valve 3 additional on the trunk line 2 of discharging fume of 5 entrances of a plurality of smoke exhaust fans, utilize electrical control valve 3 to adjust lubricating-oil tank 1 pressure. Specifically, the main smoke exhaust pipeline 2 is used as a main smoke exhaust channel of the lubricating oil tank 1 and is communicated with a smoke exhaust port of the lubricating oil tank 1, a plurality of smoke exhaust branch pipelines 4 are led out from the main smoke exhaust pipeline 2, the smoke exhaust fans 5 are installed on the smoke exhaust branch pipelines 4 to realize the parallel configuration of a plurality of smoke exhaust fans 5, smoke in the lubricating oil tank 1 is extracted and is sequentially exhausted through the main smoke exhaust pipeline 2, the smoke exhaust branch pipelines 4 and an exhaust pipeline 7 to maintain the negative pressure environment in the lubricating oil tank 1, wherein a manual door 6 at the inlet of each fan is used for controlling the smoke circulation in each smoke exhaust branch pipeline 4, an electric regulating valve 3 on the main smoke exhaust pipeline 2 is used for automatically regulating the total smoke exhaust amount of the lubricating oil tank 1, a pressure measuring point 8 is used for monitoring the actual pressure value in the lubricating oil tank 1 in real time and transmitting the measured actual pressure value to a control system 9, and the control system 9 is, and calculating an opening instruction of the electric regulating valve 3 according to the difference, transmitting the opening instruction to a control end of the electric regulating valve 3, regulating the opening size of the electric regulating valve 3 according to the opening instruction, and controlling the smoke discharge amount of the lubricating oil tank 1 so as to control the pressure in the lubricating oil tank 1.
Further, the control system 9 includes a proportional-integral module, the proportional-integral module calculates an opening instruction of the electric control valve 3 according to a difference between an actual pressure value and a pressure set value of the lubricating oil tank 1, and the control system 9 transmits the opening instruction to the control end of the electric control valve 3 to adjust the opening of the electric control valve 3.
The control system 9 compares the actual pressure value and the pressure set value of the lubricating oil tank 1, calculates the difference value, and then calculates the opening instruction of the electric regulating valve 3 through the proportional-integral module, and the control system 9 communicates the calculated opening instruction to the control end of the electric regulating valve 3 to realize the opening and closing action or the opening adjusting action of the electric regulating valve 3, so that the pressure of the lubricating oil tank is regulated in real time through the proportional-integral module.
In a specific embodiment, the automatic pressure regulating system further comprises a fan outlet check valve 10, the fan outlet check valve 10 is arranged on the smoke exhaust branch pipe 4 at the outlet of the smoke exhaust fan 5, the fan outlet check valve 10 is used for preventing smoke from flowing back, and the safety of the system is improved.
In addition, the control end of the smoke exhaust fan 5 is electrically connected with the control system 9, the electric connection mode of the control end and the control system is the prior art, the control system 9 automatically controls the start and stop of the smoke exhaust fan 5, the operation is less, and the automation is strong.
In another specific embodiment, the number of the smoke exhaust branch pipes 4 is two, the smoke exhaust fans 5 are configured in parallel, when the smoke exhaust fans are in normal operation, one smoke exhaust fan 5 operates, the other smoke exhaust fan 5 is standby, the pressure of the lubricating oil tank 1 can be adjusted by adjusting the opening of the fan inlet manual door 6 of the operating smoke exhaust fan 5, and the pressure of the lubricating oil tank 1 can be adjusted by controlling the opening of the electric control valve 3 on the smoke exhaust main pipe 2, so that remote automatic control is realized.
The above description is about the components of the automatic regulating system for the pressure of the lubricating oil tank of the gas turbine and the connection relationship between the components, and the working principle of the automatic regulating system for the pressure of the lubricating oil tank of the gas turbine is described in detail with reference to fig. 1.
In this embodiment, the target pressure value of the lubricating oil tank 1 is set to a fixed value in the control system 9 and recorded as a pressure set value, and when the automatic pressure regulation system is put into operation, the pressure measuring point 8 monitors the actual pressure value in the lubricating oil tank 1 in real time and communicates the measured actual pressure value to the control system 9, and the control system 9 compares the actual pressure value with the pressure set value, and when the two values are consistent, the electric control valve 3 maintains the original opening degree. When the unit load changes, the actual pressure value of the lubricating oil tank 1 can change along with the unit load, when the actual pressure value is greater than the pressure set value, the electric regulating valve 3 needs to be opened, the control system 9 calculates the difference value between the two through the proportional-integral module, an opening instruction of the electric regulating valve 3 is obtained, the opening instruction is communicated to the control end of the control system 9, the control end starting motor adjusts the electric regulating valve 3 to a new opening, more smoke in the lubricating oil tank 1 is pumped away by the smoke exhaust fan 5 through the opening of the electric regulating valve 3, and the actual pressure in the lubricating oil tank 1 is gradually reduced. Similarly, when the actual pressure value is smaller than the pressure set value, the electric control valve 3 needs to be turned down, the control system 9 calculates the difference value between the two through the proportional-integral module, a turned-down opening instruction of the electric control valve 3 is obtained, the opening instruction is communicated to the control end of the control system 9, the control end starting motor adjusts the electric control valve 3 to a new opening, the amount of smoke exhausted from the lubricating oil tank 1 is reduced through the turning down of the electric control valve 3, and the actual pressure in the lubricating oil tank 1 is increased. Through the cyclic calculation control of the control system 9, the opening degree of the electric control valve 3 is continuously adjusted, so that the pressure of the lubricating oil tank 1 is adjusted to and maintained at the target pressure value.
In addition, when automatic adjustment can not be carried out, the pressure of the lubricating oil tank 1 can be adjusted through the remote manual adjustment electric adjusting valve 3, the manual door 6 for the inlet of the fan does not need to be adjusted on site, the operation is more convenient, and the adjustment is more real-time, accurate and safe.
To sum up, this specification discloses a gas turbine lubricating oil tank pressure automatically regulated system, adopt the mode that sets up electric control valve on the trunk line of discharging fume, start at gas turbine generating set, stop and lift load in-process, if gas turbine lubricating oil tank pressure changes, compare lubricating oil tank's actual pressure value with the set pressure value, automatically regulated electric control valve's aperture when pressure is higher than or is less than the set pressure value, with the stability of control lubricating oil tank pressure, if automatically regulated can't drop into, still can be through the aperture of remote control manual regulation electric control valve, adjust lubricating oil tank pressure. The automatic pressure regulating system is more flexible and quicker in reaction, can be remotely and continuously regulated in real time when the pressure of the lubricating oil tank is regulated in the running process of the gas turbine, does not need manual operation on the spot, removes frequent manual valve operation on the spot, improves the accuracy and timeliness of pressure regulation of the lubricating oil tank, and is safer.
Those of ordinary skill in the art will understand that: the figures are schematic representations of one embodiment, and the blocks or processes in the figures are not necessarily required to practice the present invention.
Those of ordinary skill in the art will understand that: modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, or may be located in one or more devices different from the embodiments with corresponding changes. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (5)
1. An automatic pressure adjusting system for a lubricating oil tank of a gas turbine is characterized by comprising the lubricating oil tank, a main smoke exhaust pipeline, an electric adjusting valve, a branch smoke exhaust pipeline, a smoke exhaust fan, a manual fan inlet door, a discharge pipeline, a pressure measuring point and a control system; wherein:
the smoke outlet of the lubricating oil tank is connected with the main smoke exhaust pipeline; a plurality of paths of smoke exhaust branch pipelines are led out from the main smoke exhaust pipeline; the smoke exhaust fan is arranged on the smoke exhaust branch pipeline; the smoke exhaust branch pipeline at the inlet of the smoke exhaust fan is provided with the fan inlet manual door; the multiple paths of smoke exhaust branch pipelines are converged and then are communicated with the discharge pipeline together; the electric regulating valve is installed on the main smoke exhaust pipeline; the lubricating oil tank is provided with the pressure measuring point, and an actual pressure value in the lubricating oil tank is monitored; the control system is electrically connected with the signal output end of the pressure measuring point, the control system is electrically connected with the control end of the electric regulating valve, and the pressure of the lubricating oil tank is adjusted by regulating the opening degree of the electric regulating valve.
2. The automatic regulating system for pressure of a lubricating oil tank of a gas turbine as claimed in claim 1, wherein the control system comprises a proportional-integral module, the proportional-integral module calculates an opening command of the electric regulating valve according to a difference value between an actual pressure value and a pressure set value of the lubricating oil tank, and the control system transmits the opening command to a control end of the electric regulating valve to regulate the opening of the electric regulating valve.
3. The automatic gas turbine lubricating oil tank pressure regulating system as claimed in claim 1, further comprising a fan outlet check valve provided on the exhaust branch pipe at the exhaust fan outlet.
4. The automatic gas turbine oil tank pressure regulating system as claimed in claim 1, wherein a control end of the smoke exhaust fan is electrically connected with the control system.
5. The automatic pressure regulating system for a lubricating oil tank of a gas turbine as claimed in claim 1, wherein the number of the exhaust branch pipes is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022935568.6U CN213482717U (en) | 2020-12-10 | 2020-12-10 | Automatic pressure adjusting system for lubricating oil tank of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022935568.6U CN213482717U (en) | 2020-12-10 | 2020-12-10 | Automatic pressure adjusting system for lubricating oil tank of gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213482717U true CN213482717U (en) | 2021-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022935568.6U Withdrawn - After Issue CN213482717U (en) | 2020-12-10 | 2020-12-10 | Automatic pressure adjusting system for lubricating oil tank of gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213482717U (en) |
-
2020
- 2020-12-10 CN CN202022935568.6U patent/CN213482717U/en not_active Withdrawn - After Issue
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210618 Effective date of abandoning: 20231225 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210618 Effective date of abandoning: 20231225 |