CN114602204A - Automatic oil drainage system and oil drainage method - Google Patents
Automatic oil drainage system and oil drainage method Download PDFInfo
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- CN114602204A CN114602204A CN202210055225.1A CN202210055225A CN114602204A CN 114602204 A CN114602204 A CN 114602204A CN 202210055225 A CN202210055225 A CN 202210055225A CN 114602204 A CN114602204 A CN 114602204A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims description 67
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 238000001179 sorption measurement Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 8
- 238000011084 recovery Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 194
- 239000007789 gas Substances 0.000 description 51
- 238000009833 condensation Methods 0.000 description 10
- 230000005494 condensation Effects 0.000 description 10
- 238000000605 extraction Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000009834 vaporization Methods 0.000 description 4
- 230000008016 vaporization Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0033—Other features
- B01D5/0051—Regulation processes; Control systems, e.g. valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
- B01D5/009—Collecting, removing and/or treatment of the condensate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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Abstract
The invention discloses an automatic oil discharge system and an oil discharge method, wherein the automatic oil discharge system comprises an oil gas inlet, an oil gas outlet, an oil discharge port, a pressurizing device, a condensing device, an oil storage tank, an oil discharge pump and an adjusting mechanism, wherein the oil gas inlet, the pressurizing device, the condensing device, the adjusting mechanism and the oil gas outlet are sequentially connected; the oil discharging end of the condensing device is connected with an oil storage tank, and the oil storage tank is connected with an oil discharging port through an oil discharging pump; the condensing device is used for condensing and recovering oil gas, and the adjusting mechanism is used for ensuring the pressure of the automatic oil discharge system to be kept stable; according to the automatic oil discharge system disclosed by the application, the oil gas is pressurized through the pressurizing device, so that the cavitation erosion allowance of the whole automatic oil discharge system can be improved, and the influence of the compressible gas on oil discharge is reduced; the pressure of the automatic oil discharge system is stabilized at a certain value by the adjusting mechanism, and the pressure of the micro positive pressure is always kept inside the condensing device, so that the normal oil discharge of the condensing device is ensured, and the oil gas recovery effect of the device can be improved.
Description
Technical Field
The invention relates to the technical field of oil gas recovery devices, in particular to an automatic oil discharge system and an oil discharge method.
Background
At a certain temperature of the liquid, which for some reason will cause the pressure at the pump inlet to be lower than the vaporization pressure of the liquid at that temperature, i.e. lower than the saturated vapor pressure of the liquid at that temperature, the liquid starts to vaporize and generate vapor bubbles; when the liquid with bubbles enters the high-pressure area along with the liquid flow, the bubbles are broken, and the surrounding liquid quickly fills the original bubble cavity to generate impact; this phenomenon of bubble generation, development and collapse is called cavitation, which is simply the process of a flowing liquid generating bubbles and then collapsing.
In the oil gas recovery device for recovering oil gas based on the condensation method, the components of oil products are complex, the vaporization pressure of a lot of volatile oil products is low, and the cavitation allowance of the oil gas recovery device is small because the whole set of oil gas recovery device is limited by the height design of the structural layout.
The existing oil gas recovery device adopts an oil collecting storage tank, and after oil is collected to a certain amount through liquid level control, the condensed and recovered liquid oil is conveyed to a specified oil storage tank by an oil pump; once uncontrollable factors such as environmental temperature change or pipeline resistance grow appear, the oil will take place the vaporization in the pipeline or the pump, very easily produces the cavitation phenomenon, not only can lead to the oil pump sealing member to damage, also can appear the unable automation of liquid oil and send outward, the unable normal automatic oil extraction's of oil pump problem promptly.
In order to solve the problem that an oil pump cannot discharge oil normally, the existing part of oil gas recovery devices adopt an oil collection double-tank design and pressurize oil collection tanks through compressed gas, the first oil collection tank is higher than the second oil collection tank, the first oil collection tank is used for storing condensed and recovered liquid oil, and the second oil collection tank is used for conveying oil under pressure through liquid level control; because the common compressed gas is compressed dry air or inert gas nitrogen, and because flammable and explosive oil products are stored in the oil collecting tank, potential safety hazards exist in pressurization, and the pressurization oil discharge method can be adopted only for projects with nitrogen; in addition, in the automatic oil gas conveying process, after nitrogen pressurization, the pressure in the second oil collecting tank needs to be released, and when the compressed gas is released to the first oil collecting tank through the gas balance pipe, the compressed gas is not beneficial to enabling condensate to return to the first oil collecting tank, so that the normal work of the oil gas recovery device is influenced.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide an automatic oil drainage system having the advantage of high cavitation margin, which can reduce the influence of the compressible gas on the oil drainage task.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic oil discharge system comprises an oil gas inlet, an oil gas outlet, an oil discharge port, a pressurizing device, a condensing device, an oil storage tank, an oil discharge pump and an adjusting mechanism, wherein the oil gas inlet, the pressurizing device, the condensing device, the adjusting mechanism and the oil gas outlet are sequentially connected; the oil discharge end of the condensing device is connected with the oil storage tank, and the oil storage tank is connected with the oil discharge port through the oil discharge pump; the condensing unit is used for condensing and recovering oil gas, and the adjusting mechanism is used for ensuring that the pressure of the automatic oil discharge system is kept stable.
In the automatic oil discharge system, the pressurizing device is a blower, and the blower is used for conveying oil gas to be recovered into the condensing device.
In the automatic oil drainage system, the adjusting mechanism comprises an adjusting valve, and the adjusting valve is used for adjusting the system pressure of the automatic oil drainage system.
The automatic oil discharge system further comprises a control device, the adjusting mechanism further comprises a second pressure transmitter electrically connected with the control device, and the second pressure transmitter is arranged on the connecting pipeline between the condensing device and the adjusting valve.
The automatic oil drainage system also comprises a liquid level sensor electrically connected with the control device, and the liquid level sensor is used for detecting the liquid level in the oil storage tank; the oil discharge pump is electrically connected with the control device.
The automatic oil discharge system also comprises a first switch valve, a second switch valve and a first pressure transmitter which are respectively and electrically connected with the control device, wherein the first pressure transmitter is arranged on a connecting pipeline between the oil gas inlet and the pressurizing device; the first switch valve is arranged on a connecting pipeline of the oil storage tank and the oil discharge pump; the second switch valve is arranged between the oil drain pump and the oil drain port.
The automatic oil discharge system further comprises an adsorption device, the adsorption device is arranged between the condensing device and the adjusting mechanism, and the adsorption device is used for adsorbing oil gas.
The invention also correspondingly provides an oil discharge method of the automatic oil discharge system, which is characterized in that the oil discharge method is used for realizing the working control of the automatic oil discharge system; the oil discharging method comprises the following steps:
presetting an action pressure value of an adjusting valve and a stable pressure value of a second pressure transmitter in a control device;
the control device acquires a real-time pressure value fed back by the second pressure transmitter;
if the real-time pressure value fed back by the second pressure transmitter is larger than or equal to the preset action pressure value, the control device controls the regulating valve to be opened, and the opening of the regulating valve is adjusted according to the real-time pressure value fed back by the second pressure transmitter, so that the real-time pressure value fed back by the second pressure transmitter is consistent with the preset pressure-stabilizing pressure value.
In the oil discharge method of the automatic oil discharge system, the automatic oil discharge system further comprises a liquid level sensor for detecting the liquid level in the oil storage tank, and the liquid level sensor is electrically connected with the control device; the oil discharging method further comprises the steps of:
setting a discharge liquid level and a stop liquid level in the control device in advance;
the control device acquires real-time liquid level fed back by the liquid level sensor;
if the real-time liquid level is larger than or equal to the discharge liquid level, the control device controls the oil discharge pump to start working;
and if the real-time liquid level is less than or equal to the stop liquid level, the control device controls the oil discharge pump to stop working.
Has the advantages that:
the invention provides an automatic oil drainage system, which can increase the cavitation margin of the whole automatic oil drainage system and reduce the influence of compressible gas on the oil drainage task by pressurizing oil gas through a pressurizing device; the pressure of the automatic oil discharge system is stabilized at a certain value by the adjusting mechanism, and the pressure of the micro positive pressure is always kept inside the condensing device, so that the condensing device can normally and automatically discharge oil, oil condensation liquefaction is facilitated, and the condensation effect of the condensing device on oil gas can be improved.
Drawings
Fig. 1 is a schematic view of a first structure of an automatic oil drainage system provided by the present invention;
FIG. 2 is a schematic view of a second structure of the automatic oil draining system according to the present invention;
FIG. 3 is a first logic flow diagram of the oil draining method of the present invention;
fig. 4 is a second logic flow chart of the oil draining method provided by the present invention.
Description of the main element symbols: 11-an oil gas inlet, 111-a first pressure transmitter, 12-an oil gas outlet, 2-an oil discharge port, 3-a pressurizing device, 4-a condensing device, 5-an oil storage tank, 51-a liquid level sensor, 6-an oil discharge pump, 71-a regulating valve, 72-a second pressure transmitter, 81-a first switch valve, 82-a second switch valve and 9-an adsorption device.
Detailed Description
The invention provides an automatic oil drainage system and an oil drainage method, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and embodiments.
In the description of the present invention, it is to be understood that the terms "mounted," "connected," and the like are to be interpreted broadly, and those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
In order to overcome the cavitation problem of the pump in the process of conveying liquid oil products, the cavitation allowance of the oil gas recovery device needs to be improved; the device cavitation allowance refers to surplus energy which exceeds vaporization pressure and is contained in unit weight of liquid at the inlet of the pump, and the device cavitation allowance depends on liquid level pressure, liquid absorption height, pipeline loss, working temperature and the like and is not related to the pump per se; to ensure that the oil pump does not generate cavitation, the necessary condition is that the cavitation allowance of the oil gas recovery device is larger than the cavitation allowance of the oil discharge pump.
Referring to fig. 1 and 2, the present invention provides an automatic oil drainage system, which includes an oil gas inlet 11, an oil gas outlet 12, an oil drainage port 2, a pressurization device 3, a condensation device 4, an oil storage tank 5, an oil drainage pump 6 and an adjustment mechanism, wherein the oil gas inlet 11, the pressurization device 3, the condensation device 4, the adjustment mechanism and the oil gas outlet 12 are sequentially connected; the oil discharging end of the condensing device 4 is connected with the oil storage tank 5, and the oil storage tank 5 is connected with the oil discharging port 2 through the oil discharging pump 6; the condensing device 4 is used for condensing and recovering oil gas, and the adjusting mechanism is used for ensuring the pressure of the automatic oil discharge system to be stable.
In the automatic oil discharge system disclosed by the application, during actual work, oil gas to be recovered is input into the system from the oil gas inlet 11, then is pressurized and conveyed into the condensing device 4 through the pressurizing device 3 for condensation and recovery, and the oil gas after condensation and recovery is output to the oil gas outlet 12 through the adjusting mechanism; the oil condensed and liquefied in the condensing device 4 enters the oil storage tank 5 through the oil collecting pipe, and when the liquid oil is collected to a certain amount, the liquid oil is discharged out of the automatic oil discharge system through the oil discharge pump 6 and the oil discharge port 2; the pressurizing device 3 is arranged, oil gas is pressurized and conveyed into the condensing device 4, so that the cavitation erosion allowance of the whole automatic oil discharging system can be improved, the influence of compressed gas on an oil discharging task is reduced, compressed gas does not need to be introduced, and the use flexibility and the safety degree during working of the automatic oil discharging system are improved; the adjusting mechanism enables the pressure of the automatic oil discharging system to be stabilized at a certain value, ensures that the interior of the condensing device 4 always keeps micro-positive pressure, the cavitation allowance of the automatic oil discharging system is always larger than that of the oil discharging pump 6, the oil discharging pump 6 cannot generate cavitation, and the condensing device 4 can normally and automatically discharge oil; the internal pressure of the condensing device 4 is increased, so that the condensing temperature is increased, the oil gas condensation difficulty is reduced, oil condensation liquefaction is facilitated, and the condensing effect of the condensing device 4 on oil gas is improved.
Further, referring to fig. 1 and fig. 2, the pressurizing device 3 is a conveying fan, the conveying fan is used for pressurizing and conveying the oil gas to be recovered into the condensing device 4, the conveying fan is electrically connected to the control device, and the control device can adjust the working frequency of the conveying fan to adjust the rotating speed of the conveying fan.
Further, referring to fig. 1 and 2, the adjusting mechanism includes an adjusting valve 71, and the adjusting valve 71 is used for adjusting the system pressure of the automatic oil drainage system; in one embodiment, the regulating valve 71 may be a manual regulating valve, and the opening of the regulating valve is manually adjusted by a worker to ensure the pressure of the automatic oil drainage system to be stable.
In other embodiments, a throttling device may be used instead of the regulating valve 71 to adjust the pressure of the automatic oil discharge system by adjusting the opening degree of the throttling device.
Further, referring to fig. 1 and fig. 2, the automatic oil drainage system further includes a control device, the adjusting mechanism further includes a second pressure transmitter 72 electrically connected to the control device, and the second pressure transmitter 72 is disposed on a connecting pipeline between the condensing device 4 and the adjusting valve 71; the control device can adjust the opening degree of the regulating valve 71 according to the real-time pressure value fed back by the second pressure transmitter 72.
Further, referring to fig. 1 and 2, the automatic oil drainage system further includes a liquid level sensor 51 electrically connected to the control device, and the liquid level sensor 51 is configured to detect a liquid level in the oil storage tank 5; the oil discharge pump 6 is electrically connected with the control device, and the control device can adjust the working state of the oil discharge pump 6 according to the real-time liquid level value fed back by the liquid level sensor 51.
Further, please refer to fig. 1 and fig. 2, the automatic oil drainage system further includes a first switch valve 81, a second switch valve 82 and a first pressure transmitter 111 electrically connected to the control device, respectively, the first pressure transmitter 111 is disposed on the connection pipeline between the oil gas inlet 11 and the pressurization device 3, and the control device can know the oil gas inlet pressure according to the real-time numerical value fed back by the first pressure transmitter 111; the first switching valve 81 is disposed on a connection pipeline between the oil storage tank 5 and the oil discharge pump 6; the second on-off valve 82 is provided between the drain pump 6 and the drain port 2; when the real-time liquid level fed back by the liquid level sensor 51 reaches the preset oil discharge liquid level, the control device controls the first switch valve 81 and the second switch valve 82 to be opened, and controls the oil discharge pump 6 to start oil discharge.
Further, referring to fig. 2, the automatic oil drainage system further includes an adsorption device 9, the adsorption device 9 is disposed between the condensing device 4 and the adjusting mechanism, and the adsorption device 9 is used for adsorbing oil gas; the pressurization device 3 is matched with the adjusting mechanism, so that the pressure of the automatic oil discharge system is improved, the adsorption capacity of the adsorption device 9 can be increased, and the oil gas recovery rate is improved.
Referring to fig. 3 and 4, the present invention further provides an oil discharging method of an automatic oil discharging system, which is characterized in that the oil discharging method is used to implement the operation control of any one of the above automatic oil discharging systems; the oil discharge method comprises the following steps:
s110, setting an operating pressure value of the regulator valve 71 and a steady pressure value of the second pressure transmitter 72 in the control device in advance; the magnitude of the action pressure value and the magnitude of the stable pressure value are related to the use scene of the automatic oil drainage system and parameters of each device included in the automatic oil drainage system.
S120, the control device obtains a real-time pressure value fed back by the second pressure transmitter 72; under the action of the pressurizing device 3, the oil gas enters the condensing device 4 for condensation and recovery, and the internal pressure of a connecting pipeline between the condensing device 4 and the oil gas outlet 12 can be changed.
S130, if the real-time pressure value fed back by the second pressure transmitter 72 is larger than or equal to the preset action pressure value, the control device controls the regulating valve 71 to be opened, and adjusts the opening degree of the regulating valve 71 according to the real-time pressure value fed back by the second pressure transmitter 72, so that the real-time pressure value fed back by the second pressure transmitter 72 is consistent with the preset pressure-stabilizing pressure value; specifically, when the real-time pressure value fed back by the second pressure transmitter 72 is greater than the preset regulated pressure value, the control device controls the opening of the regulating valve 71 to increase; when the real-time pressure value fed back by the second pressure transmitter 72 is less than the preset steady pressure value, the control device controls the opening degree of the regulating valve 71 to be reduced.
If the real-time pressure value fed back by the second pressure transmitter 72 is less than the preset action pressure value, the regulating valve 71 is in a closed state.
The application discloses oil extraction method of automatic oil extraction system can guarantee that condensing equipment 4 is inside to keep pressure at a small positive pressure all the time according to the opening of real-time pressure value adjustment governing valve 71 of second pressure transmitter 72 feedback, and the cavitation surplus of automatic oil extraction system is greater than the cavitation surplus of oil extraction pump 6 all the time, and oil extraction pump 6 can not produce the cavitation, and condensing equipment 4 can normally automatic oil extraction.
Further, referring to fig. 2, the automatic oil draining system further includes a liquid level sensor 51 for detecting a liquid level of the oil storage tank 5, and the liquid level sensor 51 is electrically connected to the control device; the oil discharge method further comprises the steps of:
s210, setting a discharge liquid level and a stop liquid level in the control device in advance;
s220, the control device acquires the real-time liquid level fed back by the liquid level sensor 51;
s230, if the real-time liquid level is larger than or equal to the discharge liquid level, the control device controls the oil discharge pump 6 to start working, and at the moment, the first switch valve 81 and the second switch valve 82 are in an open state to ensure that the automatic oil discharge system discharges oil normally;
and S240, if the real-time liquid level is less than or equal to the stop liquid level, the control device controls the oil discharge pump 6 to stop working, so that the oil discharge pump 6 is prevented from pumping empty, and the safety degree of the automatic oil discharge system during working is improved.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (9)
1. An automatic oil discharge system comprises an oil gas inlet, an oil gas outlet and an oil discharge port, and is characterized by further comprising a pressurizing device, a condensing device, an oil storage tank, an oil discharge pump and an adjusting mechanism, wherein the oil gas inlet, the pressurizing device, the condensing device, the adjusting mechanism and the oil gas outlet are sequentially connected; the oil discharge end of the condensing device is connected with the oil storage tank, and the oil storage tank is connected with the oil discharge port through the oil discharge pump; the condensing unit is used for condensing and recovering oil gas, and the adjusting mechanism is used for ensuring that the pressure of the automatic oil discharge system is kept stable.
2. The automatic oil drainage system of claim 1 wherein the pressurization device is a delivery blower for delivering oil gas to be recovered into the condensing device.
3. The automatic oil drainage system of claim 1 wherein the adjustment mechanism comprises a regulator valve for adjusting the system pressure of the automatic oil drainage system.
4. The automatic oil drainage system of claim 3, further comprising a control device, wherein the adjusting mechanism further comprises a second pressure transmitter electrically connected to the control device, and the second pressure transmitter is disposed on a connection pipeline between the condensing device and the adjusting valve.
5. The automatic oil drainage system of claim 4 further comprising a liquid level sensor electrically connected to the control device, the liquid level sensor being configured to detect a liquid level in the oil storage tank; the oil discharge pump is electrically connected with the control device.
6. The automatic oil drainage system of claim 4, further comprising a first switch valve, a second switch valve and a first pressure transmitter electrically connected to the control device, respectively, wherein the first pressure transmitter is disposed on a connection pipeline between the oil gas inlet and the pressurization device; the first switch valve is arranged on a connecting pipeline of the oil storage tank and the oil discharge pump; the second switch valve is arranged between the oil drain pump and the oil drain port.
7. The automatic oil drainage system of claim 1, further comprising an adsorption device disposed between the condensing device and the adjusting mechanism, the adsorption device being configured to adsorb oil and gas.
8. An oil discharge method of an automatic oil discharge system for realizing an operation control of the automatic oil discharge system according to any one of claims 4 to 6; the oil discharge method comprises the following steps:
presetting an action pressure value of an adjusting valve and a stable pressure value of a second pressure transmitter in a control device;
the control device acquires a real-time pressure value fed back by the second pressure transmitter;
if the real-time pressure value fed back by the second pressure transmitter is larger than or equal to the preset action pressure value, the control device controls the regulating valve to be opened, and the opening of the regulating valve is adjusted according to the real-time pressure value fed back by the second pressure transmitter, so that the real-time pressure value fed back by the second pressure transmitter is consistent with the preset pressure-stabilizing pressure value.
9. An oil discharging method of an automatic oil discharging system according to claim 8, wherein said automatic oil discharging system further comprises a liquid level sensor for detecting the liquid level inside the oil storage tank, said liquid level sensor is electrically connected to said control device; the oil discharge method further comprises the steps of:
setting a discharge liquid level and a stop liquid level in the control device in advance;
the control device acquires real-time liquid level fed back by the liquid level sensor;
if the real-time liquid level is larger than or equal to the discharge liquid level, the control device controls the oil discharge pump to start working;
and if the real-time liquid level is less than or equal to the stop liquid level, the control device controls the oil discharge pump to stop working.
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| CN202210055225.1A CN114602204A (en) | 2022-01-18 | 2022-01-18 | Automatic oil drainage system and oil drainage method |
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| CN112812807A (en) * | 2020-12-30 | 2021-05-18 | 广东申菱环境系统股份有限公司 | Oil gas recovery device and precooling and cold insulation method thereof |
| CN113786700A (en) * | 2021-09-01 | 2021-12-14 | 广东申菱环境系统股份有限公司 | Oil gas recovery system |
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