Oil product collecting system

Abstract

The utility model provides an oil product collecting system. The oil product collecting system comprises at least one separator used for containing oil products; the collector comprises an oil inlet and an oil outlet, and the oil inlet is connected with all the separators through collecting pipelines; the collecting valve is arranged on the collecting pipeline; when the collecting valve is in an open state, the collector is communicated with at least one separator; when the collecting valve is in a closed state, the collector is separated from all the separators; the liquid level monitoring device is arranged on the collector and is used for monitoring the liquid level of the oil product in the collector; the recovery device comprises a recovery pump, and the recovery pump is connected with the oil outlet of the collector and electrically connected with the liquid level monitoring device; and the recovery device is configured to be started when the liquid level monitoring device monitors that the liquid level of the oil product in the collector reaches a height threshold value. The liquid level of the oil product in the collector is automatically monitored in the oil product collection process, and the recovery device is started to extract the oil product in the collector when the liquid level reaches the set height threshold value, so that the automation degree of the oil product collection system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of oil collection, and in particular to an oil collection system. Background Art

[0002] When the oil is inside the separator, water and solid impurities are concentrated at the bottom of the separator. The water and solid impurities in the oil are discharged by discharging the bottom oil in the separator to achieve oil separation. In the conventional bottom oil discharge operation, a collection tank is generally set at the downstream end of the separator. During operation, the liquid level of the collection tank is manually observed, and the switch is manually controlled to discharge the bottom oil collected in the collection tank in a timely manner. The demand for manpower is large, the degree of automation is low, and the accuracy of control is relatively low. Utility Model Content

[0003] The present application provides an oil collection system for realizing automatic oil collection.

[0004] The present application provides an oil collection system, comprising: at least one separator for containing oil; a collector, the collector comprising an oil inlet and an oil outlet, the oil inlet being connected to all separators through a collection pipeline; a collection valve, arranged in the collection pipeline; when the collection valve is in an open state, the collector is connected to at least one separator; when the collection valve is in a closed state, the collector is isolated from all separators; a liquid level monitoring device, arranged in the collector, for monitoring the liquid level of the oil in the collector; a recovery device, comprising a recovery pump, the recovery pump being connected to the oil outlet of the collector and electrically connected to the liquid level monitoring device; the recovery pump is configured to start when the liquid level monitoring device detects that the liquid level of the oil in the collector reaches a height threshold.

[0005] In some embodiments, the recovery pump includes a first working state and a second working state; in the first working state, the recovery pump operates at a first power to recover the bottom oil in the separator; in the second working state, the recovery pump operates at a second power to empty all the oil in the separator; wherein the first power is less than the second power.

[0006] In some embodiments, the recovery pump includes an outlet end; the oil collection system also includes: a recovery valve, which is arranged at the outlet end of the recovery pump and is electrically connected to the liquid level monitoring device; the recovery valve is configured to open when the liquid level of the oil in the collector reaches a height threshold.

[0007] In some embodiments, the recovery pump includes an inlet end, and the oil outlet of the collector is connected to the inlet end of the recovery pump through a recovery pipe; the oil collection system also includes: a first flange, connected to the oil outlet of the collector; and a second flange, connecting the first flange and the recovery pipe.

[0008] In some embodiments, the above-mentioned oil collection system also includes: a vent pipe, arranged at the top of the collector, for connecting the collector with the external environment; a vent valve, arranged on the vent pipe, which can be controlled to open to allow the vent pipe to pass or controlled to close to seal the vent pipe.

[0009] In some embodiments, the vent valve is configured to open when the current demand is to recover the bottom oil in the separator, and to close when the current demand is to drain all the oil in the separator.

[0010] In some embodiments, the above-mentioned oil collection system further includes: a third flange connected to an end of the vent pipe close to the collector; and a fourth flange connecting the third flange and the collector.

[0011] In some embodiments, the above-mentioned oil collection system also includes: an anti-overflow valve connected to the ventilation pipe; the anti-overflow valve is configured to close when the oil reaches a target height to seal the ventilation pipe; wherein the target height is greater than a height threshold.

[0012] In some embodiments, the recovery pump includes an inlet end, and the oil collection system also includes: a pressure sensing device, arranged at the inlet end of the recovery pump; an alarm device, electrically connected to the pressure sensing device; the alarm device is configured to issue an alarm prompt when the anti-overflow valve is closed and the pressure value detected by the pressure sensing device is greater than or equal to the pressure threshold.

[0013] In some embodiments, the above-mentioned oil collection system further includes: a first observation device, connected to the ventilation pipe and disposed above the anti-overflow valve.

[0014] In some embodiments, the above-mentioned oil collection system further includes: a fire arrester, which is arranged at the end of the vent pipe on the side away from the collector.

[0015] In some embodiments, the above-mentioned oil collection system also includes: a detection tube installed on the side wall of the collector, used to connect the inner cavity of the collector with the external environment, and the installation height of the detection tube is greater than or equal to the height threshold; a detection valve is arranged on the detection tube, which can be controlled to open to allow the detection tube to pass or controlled to close to seal the detection tube; the detection valve is configured to open to realize fault detection of the liquid level monitoring device.

[0016] In some embodiments, the above-mentioned oil collection system also includes: a weight sensing device, arranged at the bottom of the collector, for monitoring the weight of the oil in the collector; the weight sensing device is electrically connected to a recovery pump, and the recovery pump is configured to stop running when the weight of the oil monitored by the weight sensing device is less than or equal to a lower weight threshold.

[0017] In some embodiments, the above-mentioned oil collection system further includes: an oil status monitoring device, connected to the collection pipeline, for monitoring the status of the oil flowing through the collection pipeline.

[0018] In some embodiments, the oil status monitoring device is electrically connected to the collection valve, and the collection valve is configured to be closed when the oil in the collection pipeline is free of water and impurities.

[0019] In some embodiments, the oil status monitoring device includes a sampler; the collecting valve includes a first valve and a second valve, which are respectively arranged on both sides of the sampler, and the first valve is arranged on the side close to the separator, and the second valve is arranged on the side close to the collector.

[0020] In some embodiments, the first valve is configured to open when the current demand is to recover the bottom oil in the separator, and the second valve is configured to open after a delay of a first time period after the first valve opens.

[0021] In some embodiments, the collection pipeline includes: a main collection pipeline, which is connected to a first valve, a sampler and a second valve; an auxiliary collection pipeline, which is connected to a third valve, and one end of the auxiliary collection pipeline is connected to the main collection pipeline between the first valve and the separator, and the other end is connected to the main collection pipeline between the second valve and the collector.

[0022] In some embodiments, the third valve is configured to open when the current demand is to recover the bottom oil in the separator, the first valve is configured to open after the third valve opens for a second time delay, and the second valve is configured to open after the first valve opens for a third time delay.

[0023] When the oil collection system provided by the present application is used, the collection valve is controlled to open to allow the oil in one or more separators to flow to the collector when oil collection is required. In this process, the liquid level of the oil in the collector is automatically monitored, and when the liquid level of the oil reaches a set height threshold, the recovery pump is started to extract the oil in the collector to achieve automatic recovery. Oil collection can be achieved without manual operation, which improves the automation of the oil collection system and the accuracy of the oil collection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of an oil collection system provided by an embodiment of the present application;

[0025] Figure 2 is a schematic diagram of an oil collection system provided by another embodiment of the present application;

[0026] Figure 3 It is a schematic diagram of the installation of an oil collection system provided by an embodiment of the present application.

[0027] Reference numerals:

[0028] 10: separator; 12: collection pipe; 23: recovery pipe; 20: collector; 30: recovery pump;

[0029] 101: bottom oil outlet; 110: oil status monitoring device; 120: collecting valve; 121: first valve; 122: second valve; 123: third valve; 130: separation valve;

[0030] 21: liquid level monitoring device; 200: vent pipe; 201: oil inlet; 202: oil outlet; 210: detection pipe; 211: detection valve; 221: vent valve; 222: anti-overflow valve; 223: first observation device; 224: fire arrester; 200: vent pipe; 221: vent valve; 222: anti-overflow valve; 223: first observation device; 224: fire arrester; 231: second observation device; 232: recovery pipeline valve; 233: filter; 241: first flange; 242: second flange; 243: third flange; 244: fourth flange;

[0031] 301: inlet end; 302: outlet end; 310: pressure sensing device; 311: first pressure gauge; 312: second pressure gauge; 320: recovery valve; 330: check valve. DETAILED DESCRIPTION

[0032] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0033] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. Similar words such as "one" or "one" used in this application specification and claims do not indicate a quantitative limitation, but rather indicate the presence of at least one. "Multiple" includes two, which is equivalent to at least two. Similar words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects.

[0034] "Connected" or "connected" and similar words are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0035] Combination Figure 1 As shown, an embodiment of the present application provides an oil collection system, which includes at least one separator 10 for containing oil, a collector 20 , a recovery device, a liquid level monitoring device 21 , and a collection valve 120 .

[0036] The collector 20 includes an oil inlet 201 and an oil outlet 202, and the oil inlet 201 of the collector 20 is connected to all the separators 10 through a collecting pipe 12. Specifically, each separator 10 is provided with a bottom oil outlet 101, and the collecting pipe 12 connects the bottom oil outlet 101 of the separator 10 and the oil inlet 201 of the collector 20 to ensure the discharge of the bottom oil in the separator 10. In some embodiments, the oil outlet 202 of the collector 20 is arranged on the bottom surface of the collector 20 so as to exhaust all the oil in the collector 20; the oil inlet 201 is arranged on the side wall of the collector 20 and is arranged at a height higher than the oil outlet 202 to reduce the resistance to be overcome during the oil intake process. Further, the separator 10 here is a filter separator, including a filter element for filtering water and impurities. When the oil flows through the filter element, the water and solid impurities in the oil are filtered and separated and concentrated at the bottom of the filter separator.

[0037] The collecting valve 120 is disposed on the collecting pipe 12. When the collecting valve 120 is in an open state, the collector 20 is connected to at least one separator 10; when the collecting valve 120 is in a closed state, the collector 20 is isolated from all the separators 10. In the implementation process, corresponding to the plurality of separators 10, a plurality of collecting valves 120 are also provided to realize the on-off control of the connection between each separator 10 and the collector 20.

[0038] The liquid level monitoring device 21 is disposed in the collector 20 to monitor the liquid level of the oil in the collector 20. In some embodiments, the liquid level monitoring device 21 is a liquid level switch disposed inside the collector 20, and the liquid level switch is installed at a set height threshold so as to accurately monitor whether the liquid level of the oil in the collector 20 reaches the height threshold. In other embodiments, the liquid level monitoring device 21 can be an image sensor device for obtaining an image inside the collector 20 to determine the liquid level of the oil in the collector 20 based on the image; or a weight sensor device for obtaining the weight of the oil in the collector 20 to determine the liquid level of the oil in the collector 20 based on the weight of the oil.

[0039] The recovery device includes a recovery pump 30. The recovery pump 30 is connected to the oil outlet of the collector 20 and is electrically connected to the liquid level monitoring device 21. The recovery pump 30 is configured to start when the liquid level monitoring device 21 detects that the liquid level of the oil in the collector 20 reaches a height threshold. In some embodiments, the oil collection system also includes a controller. The liquid level monitoring device 21 and the recovery pump 30 are both electrically connected to the controller. When the liquid level monitoring device 21 detects that the liquid level of the oil in the collector 20 reaches a height threshold, the controller controls the recovery pump 30 to start so as to extract the oil in the collector 20.

[0040] In some embodiments, the recovery pump 30 is also configured to shut down after a target duration. The target duration is determined based on the size information of the collector 20, the height threshold, and the operating power of the recovery pump 30. Specifically, the total volume of the oil when the oil level in the collector 20 reaches the height threshold is calculated based on the size information and the height threshold of the collector 20, the flow rate of the recovery pump 30 when it is running is determined based on the operating power of the recovery pump 30, the time required to discharge all the oil in the collector is calculated based on the total volume of the oil and the flow rate of the recovery pump 30 when it is running, and the target duration is determined based on the duration, and the target duration is greater than or equal to the duration. For example, the collector 20 is a cylindrical container with an inner diameter of 400 mm and a height threshold of 0.5 m. When the oil level reaches the height threshold, the volume of the oil in the collector 20 is approximately 0.063 m 3 If the oil flow rate of the recovery pump 30 is 6m 3 / h, then it is calculated that the time for the collector 20 to drain the internal oil once is about 38 seconds. Accordingly, the target time is set to be greater than or equal to 38 seconds, for example, set to 1 minute.

[0041] In some embodiments, the recovery pump 30 is further configured to shut down when the liquid level monitoring device 21 detects that the liquid level of the oil product in the collector 20 reaches the lower height threshold. In this way, the oil product recovery process can be automatically controlled to stop automatically according to the actual recovery situation.

[0042] When the oil collection system provided in the embodiment of the present application is used, the collection valve 120 is controlled to open to allow the oil in one or more separators 10 to flow to the collector 20. In this process, the liquid level of the oil in the collector 20 is automatically monitored, and when the liquid level of the oil reaches a set height threshold, the recovery pump 30 is started to extract the oil in the collector 20 to achieve automatic recovery. Oil collection can be achieved without manual operation, which improves the automation of the oil collection system and the accuracy of the oil collection process.

[0043] Here, combined Figure 2 and Figure 3 , and further detailed description is given on the structure of the oil collection system.

[0044] In some embodiments, the oil product collection system further includes: an oil product status monitoring device 110, which is connected to the collection pipeline 12 and is used to monitor the status of the oil product flowing through the collection pipeline 12. Through the oil product status monitoring device 110, it can be determined whether the oil product flowing through the collection pipeline 12 at this time is a bottom oil product containing impurities, thereby determining whether the bottom oil product in the collector 20 has been completely discharged, thereby avoiding excessive discharge of oil products and causing waste. Further, in some embodiments, the oil product status monitoring device 110 is electrically connected to the collection valve 120, and the collection valve 120 is configured to be closed when the state of the oil product in the collection pipeline 12 is free of water and impurities. Specifically, the oil product status monitoring device 110 and the collection valve 120 are both electrically connected to the controller. When the oil product status monitoring device 110 detects that the state of the oil product in the current collection pipeline 12 does not contain water and impurities, the controller controls the collection valve 120 to close to block the collection pipeline 12. In this way, when the current demand is to discharge the bottom oil in the separator 10, the oil status monitoring device 110 can determine the timing of closing the collection valve 120, thereby stopping the oil discharge process in time to avoid wasting the oil above the bottom oil.

[0045] In some embodiments, the oil product status monitoring device 110 includes a sampler. The collecting valve 120 includes a first valve 121 and a second valve 122, which are respectively arranged on both sides of the sampler, and the first valve 121 is arranged on the side close to the separator 10, and the second valve 122 is arranged on the side close to the collector 20. In this way, the oil in the collector 20 can enter the sampler by opening the first valve 121, and the oil in the sampler can flow out of the sampler and enter the collector 20 by opening the second valve 122. Among them, the sampler can be a visual pipeline that can directly observe the internal state. Alternatively, the sampler includes an image acquisition device for acquiring an image so as to analyze the state of the oil in the sampler according to the image. The image acquisition device can include, but is not limited to, a camera, a scanner, and other devices with a camera function. Further, in some embodiments, the first valve 121 is configured to open when the current demand is to recover the bottom oil in the separator 10, and the second valve 122 is configured to open after a first time delay after the first valve 121 is opened. That is, the first valve 121 and the second valve 122 are both electrically connected to the controller. When the current demand is to recover the bottom oil in the separator 10, the controller first controls the first valve 121 to open, and then controls the second valve 122 to open after the first time period. In this way, the first valve 121 closer to the separator 10 is opened first, and then the second valve 122 is opened with a delay, which can extend the residence time of the oil to be observed in the sampler, thereby facilitating the observation and analysis of the state of the oil.

[0046] In some embodiments, the collecting pipeline 12 includes a main collecting pipeline 12 and an auxiliary collecting pipeline 12. The main collecting pipeline 12 is connected with the above-mentioned first valve 121, the sampler and the second valve 122. The auxiliary collecting pipeline 12 is connected with the third valve 123, and one end of the auxiliary collecting pipeline 12 is connected to the main collecting pipeline 12 between the first valve 121 and the separator 10, and the other end is connected to the main collecting pipeline 12 between the second valve 122 and the collector 20. In this way, two flow paths of the main collecting pipeline 12 and the auxiliary collecting pipeline 12 are set, and the main collecting pipeline 12 is provided with a sampler, and the auxiliary collecting pipeline 12 has no sampler. The selection of the oil product flow path can be realized by controlling the first valve 121, the second valve 122 and the third valve 123, so as to adapt to different needs of sampling or not sampling. For example, when the current demand is to empty all the oil products in the separator 10, there is no need to sample, and the oil products can be directly discharged through the auxiliary collecting pipeline 12. Optionally, the first valve 121 , the second valve 122 and the third valve 123 are ball valves for easy operation.

[0047] Further, in some embodiments, the third valve 123 is configured to open when the current demand is to recover the bottom oil in the separator 10, the first valve 121 is configured to open after the third valve 123 is opened for a second time delay, and the second valve 122 is configured to open after the first valve 121 is opened for a third time delay. Optionally, the first valve 121, the second valve 122 and the third valve 123 are electric ball valves. Specifically, the first valve 121, the second valve 122 and the third valve 123 are all electrically connected to the controller. The controller first controls the third valve 123 to open, and after the second time, controls the first valve 121 to open, and after the third time, controls the second valve 122 to open. More specifically, the third valve 123 is first controlled to open, and the first valve 121 is in a closed state. The bottom oil flowing out of the separator 10 flows into the collector 20 through the auxiliary collection pipeline 12 where the third valve 123 is located. After the second time period, the first valve 121 is controlled to open, and the third valve 123 is controlled to close, and the second valve 122 remains closed. At this time, the bottom oil flowing out of the separator 10 enters the sampler through the main collecting pipe 12 where the first valve 121 is located to determine the state of the oil. After the third time period, the second valve 122 is opened, the main collecting pipe 12 is connected, and the bottom oil in the separator 10 flows into the collector 20 through the main collecting pipe 12. Compared with the oil directly flowing into the collector 20 through the auxiliary collecting pipe 12, the oil flows into the collector 20 after passing through the sampler relatively slowly. In the initial stage of discharging the bottom oil, the risk of discharging the oil above the bottom oil is low. At this time, part of the bottom oil is first discharged through the auxiliary collecting pipe 12, and then the oil state is monitored and the oil is discharged through the main collecting pipe 12, which can shorten the overall oil discharge time on the basis of avoiding excessive discharge of the bottom oil.

[0048] In some embodiments, the oil collection system further includes a separation valve 130, which is connected to the collection pipe 12 and disposed near the separator 10, and can be controlled to open to allow the oil in the separator 10 to flow out, or closed to prevent the oil in the separator 10 from flowing out. In this way, the separator 10 can be individually controlled, which facilitates the disassembly or maintenance of the pipeline.

[0049] In some embodiments, the recovery pump 30 includes a first working state and a second working state. In the first working state, the recovery pump 30 operates at a first power to recover the bottom oil in the separator 10; in the second working state, the recovery pump 30 operates at a second power to empty all the oil in the separator 10. Wherein, the first power is less than the second power. Specifically, the recovery pump 30 is connected to the controller. When the instruction received by the controller indicates that the current demand is to recover the bottom oil in the separator 10, the controller controls the recovery pump 30 to operate at the first power, that is, to operate at a lower power; when the instruction received by the controller indicates that the current demand is to empty all the oil in the separator 10, the controller controls the recovery pump 30 to operate at the second power, that is, to operate at a higher power. In the case where only the bottom oil needs to be removed, the recovery pump 30 operates at a lower power to avoid excessive energy consumption, which is conducive to energy saving; in the case where all the oil in the collector needs to be emptied, the workload of oil discharge is large, and the recovery pump 30 is controlled to operate at a higher power, thereby avoiding the oil discharge process taking too long. In this way, the recovery pump 30 can be controlled to operate at different powers according to different current operating requirements, taking into account both work efficiency and energy saving. Further, in other embodiments, the recovery pump 30 includes more working states corresponding to different powers, and operates in different working states according to the amount of oil to be discharged, wherein the more oil in the separator 10 to be discharged, the more power the recovery pump 30 operates.

[0050] In some embodiments, the recovery pump 30 includes an outlet port 302, and the oil collection system further includes: a recovery valve 320, which is arranged at the outlet port 302 of the recovery pump 30 and is electrically connected to the liquid level monitoring device 21. The recovery valve 320 is configured to open when the liquid level of the oil in the collector 20 reaches a height threshold. Specifically, the recovery valve 320 and the liquid level monitoring device 21 are both electrically connected to the controller. When the liquid level monitoring device 21 detects that the liquid level of the oil in the collector 20 reaches a height threshold, the controller controls the recovery valve 320 to open synchronously with the recovery pump 30. The outlet port 302 of the recovery pump 30 is often connected to a storage device such as an oil tank for storing oil or an oil processing device for subsequent processing of the collected oil. If the outlet port 302 of the recovery pump 30 is not provided with the recovery valve 320, or the recovery valve 320 is in a normally open state, the oil in the storage device or the oil processing device connected to the outlet port 302 of the recovery pump 30 may flow back into the recovery pump 30 or even the collector 20, increasing the risk of device damage. Therefore, a recovery valve 320 is set at the outlet end 302 of the recovery pump 30, and the recovery valve 320 is opened when the liquid level of the oil in the collector 20 reaches the height threshold and the recovery pump 30 needs to be started for recovery. This can avoid backflow of oil and reduce the risk of damage to the recovery pump 30.

[0051] Optionally, the recovery valve 320 is a gate valve to provide a better sealing effect. Further, the recovery valve 320 is an electric gate valve.

[0052] In some embodiments, the recovery pump 30 includes an inlet end 301, and the oil outlet 202 of the collector 20 is connected to the inlet end 301 of the recovery pump 30 through the recovery pipe 23. The oil collection system also includes a first flange 241 and a second flange 242. The first flange 241 is connected to the oil outlet 202 of the collector 20; the second flange 242 connects the first flange 241 and the recovery pipe 23. In this way, the recovery pipe 23 and the collector 20 are connected by the first flange 241 and the second flange 242, which facilitates the disassembly and assembly between the recovery pipe 23 and the collector 20, thereby facilitating the maintenance and cleaning process.

[0053] In some embodiments, the oil collection system further includes a vent pipe 200 and a vent valve 221. The vent pipe 200 is disposed at the top of the collector 20 to connect the collector 20 with the external environment. The vent valve 221 is disposed on the vent pipe 200 and can be controlled to open to allow the vent pipe 200 to pass or controlled to close to seal the vent pipe 200. If the vent pipe 200 is not disposed, when the recovery pump 30 is not started and the oil gradually enters the collector 20, the pressure in the collector 20 gradually increases, which will cause the speed at which the oil enters the collector 20 to gradually slow down or even make it impossible to continue to collect the oil; if the vent pipe 200 is disposed and the on-off state of the vent pipe 200 cannot be controlled and is always in an open state, a large amount of air will be sucked in through the vent pipe 200 during the process of starting the recovery pump 30 to discharge the oil in the collector 20, reducing the collection efficiency and increasing the risk of device damage. Therefore, by providing the vent pipe 200 and the vent valve 221, the different current requirements of the oil collection system can be met to ensure the collection efficiency of the oil. In some embodiments, the vent valve 221 is configured to be opened when the recovery pump 30 is stopped, and to be started when the recovery pump 30 is running. In this way, the vent valve 221 can be automatically controlled according to actual needs, and the user does not need to operate manually while ensuring the oil collection efficiency.

[0054] In some embodiments, the vent valve 221 is configured to open when the current demand is to recover the bottom oil in the separator 10, and to close when the current demand is to empty all the oil in the separator 10. Specifically, the vent valve 221 is connected to the controller, and when the instruction received by the controller indicates that the current demand is to recover the bottom oil in the separator 10, the controller controls the vent valve 221 to remain in an open state; when the instruction received by the controller indicates that the current demand is to empty all the oil in the separator 10, the controller controls the vent valve 221 to remain in a closed state. In this way, by controlling the switch of the exhaust valve, it is possible to achieve unimpeded entry of the oil when recovering the bottom oil in the separator 10, and to efficiently empty all the oil in the separator 10, to meet different actual needs.

[0055] In some embodiments, the oil collection system further includes a third flange 243 and a fourth flange 244. The third flange 243 is connected to an end of the vent pipe 200 close to the collector 20; the fourth flange 244 connects the third flange 243 and the collector 20. In this way, the vent pipe 200 and the collector 20 are connected by the first flange 241 and the second flange 242, which facilitates the disassembly and assembly between the vent pipe 200 and the collector 20, thereby facilitating the maintenance and cleaning process.

[0056] In some embodiments, the oil collection system further includes an anti-overflow valve 222 connected to the vent pipe 200. The anti-overflow valve 222 is configured to close when the oil reaches a target height to seal the vent pipe 200. The target height is greater than a height threshold. In the case where the liquid level monitoring device 21 is a liquid level switch, the anti-overflow valve 222 is installed above the liquid level switch. In this way, it is possible to prevent the oil in the collector 20 from rising along the vent pipe 200 and overflowing. Here, an exemplary description is given of the specific structure of the anti-overflow valve 222. A cavity is provided inside the anti-overflow valve 222 and a sphere is provided in the cavity, and the sphere does not completely block the airflow passing through the cavity. When gas flows through the vent pipe 200, the position of the sphere remains substantially unchanged, and when the oil rises from the vent pipe 200, the sphere rises with the liquid level. In this way, if the oil in the collector 20 overflows along the vent pipe 200, the ball will be driven up together until the target height is reached and the anti-overflow valve 222 closes and blocks the vent pipe 200, playing a blocking role to prevent the oil from continuing to overflow.

[0057] In some embodiments, the recovery pump 30 includes an inlet end 301. The oil collection system also includes: a pressure sensing device 310 and an alarm device (not shown in the figure) electrically connected to the pressure sensing device 310. The pressure sensing device 310 is arranged at the inlet end 301 of the recovery pump 30. The alarm device is configured to issue an alarm prompt when the anti-overflow valve 222 is closed and the pressure value detected by the pressure sensing device 310 is greater than or equal to the pressure threshold. Wherein, optionally, the pressure sensing device 310 is a pressure transmitter. Specifically, the pressure sensing device 310, the alarm device and the anti-overflow valve 222 are all electrically connected to the controller. When the controller detects that the anti-overflow valve 222 is closed, the controller determines whether the pressure value detected by the pressure sensor is greater than or equal to a preset pressure threshold. If the pressure value is greater than or equal to the pressure threshold, the controller controls the alarm device to start to issue an alarm prompt. In this way, it is possible to avoid excessive pressure inside the pipeline causing damage to the device or oil spillage. The pressure threshold may be set by calculating the pressure value at the inlet end 301 of the recovery pump 30 corresponding to the oil product rising to the set height in the vent pipe 200, and using the pressure value as the pressure threshold. In the case where a first observation device 223 is provided above the anti-overflow valve 222, the set height here may be the height at which the first observation device 223 is located, and more specifically, the set height may be set to the height at which the center position of the first observation device 223 is located.

[0058] In some embodiments, the collecting valve 120 is further configured to be closed when the pressure value detected by the pressure sensing device 310 is greater than or equal to the pressure threshold, or to be closed when the alarm device issues an alarm prompt, so as to block the collecting pipeline 12. That is, when the alarm device is triggered, the controller controls the collecting valve 120 to be closed. In this way, it is helpful to prevent the oil in the separator 10 from continuing to flow into the collector 20, causing the pressure in the collector 20 and the recovery pipeline 23 to continue to increase.

[0059] In some embodiments, the oil collection system further includes a collection control valve, which is disposed at the oil inlet 201 of the collector 20 and is configured to be normally open. The collection control valve is electrically connected to at least one of the alarm device and the pressure sensor device 310, and is configured to be closed when the pressure value detected by the pressure sensor device 310 is greater than or equal to the pressure threshold, or when the alarm device issues an alarm. In this way, the oil can be immediately blocked from entering the collector 20, thereby preventing the oil in the separator 10 and the collection pipeline 12 from continuing to flow into the collector 20, causing the pressure in the collector 20 and the recovery pipeline 23 to continue to increase.

[0060] In some embodiments, the oil collection system further includes a first observation device 223. The first observation device 223 is connected to the vent pipe 200 and is arranged above the anti-overflow valve 222. The first observation device 223 can monitor the state of the part of the pipeline above the anti-overflow valve 222. If oil appears in this part of the pipeline, it means that the anti-overflow valve 222 fails to timely block the vent pipe 200 to prevent the oil from overflowing, indicating that the anti-overflow valve 222 is faulty. Therefore, the first observation device 223 can timely detect the fault of the anti-overflow valve 222, further reducing the risk of oil leakage. Among them, the first observation device 223 can be a sight glass for directly observing the oil situation inside the pipeline. In other embodiments, the first observation device 223 can be an image acquisition device, which can include but is not limited to a camera, a scanner and other devices with a camera function. In this way, the real-time acquisition of the internal situation of the vent pipe 200 can be achieved to judge the oil overflow situation and the fault situation of the anti-overflow valve 222.

[0061] In some embodiments, the oil collection system further includes a fire arrester 224. The fire arrester 224 is disposed at the end of the vent pipe 200 away from the collector 20. Optionally, the fire arrester 224 is a fire arrester vent cover, which is sleeved at the end of the vent pipe 200 away from the collector 20. In this way, the risk of combustion or explosion of the oil in the vent pipe 200 can be effectively reduced.

[0062] In some embodiments, the oil collection system further includes a detection tube 210 and a detection valve 211. The detection tube 210 is arranged on the side wall of the collector 20, and is used to connect the inner cavity of the collector 20 with the external environment, and the installation height of the detection tube 210 is greater than or equal to the height threshold. The detection valve 211 is arranged on the detection tube 210, and can be controlled to open to allow the detection tube 210 to pass or controlled to close to seal the detection tube 210. And the detection valve 211 is configured to open to realize the fault detection of the liquid level monitoring device 21. In the case where the fault detection of the liquid level monitoring device 21 is required, the detection valve 211 is controlled to open. If oil appears in the detection valve 211 and the recovery pump 30 is not started, it means that the liquid level monitoring device 21 may have a fault and needs to be repaired. In some embodiments, the detection valve 211 is electrically connected to the controller. When the controller receives a control instruction indicating that the fault detection of the liquid level monitoring device 21 is performed, or when the current time is the pre-set time for the fault detection of the liquid level monitoring device 21, the controller controls the detection valve 211 to open automatically, thereby automatically starting the fault detection. In some embodiments, a post-valve plug is further provided at one end of the detection tube 210 away from the collector 20. When the detection valve 211 is closed, the post-valve plug plays a role in further preventing oil from spilling out. When performing the above-mentioned fault detection of the liquid level monitoring device 21, the post-valve plug is removed to observe whether there is oil spilling out.

[0063] In some embodiments, the oil collection system further includes a weight sensing device (not shown in the figure). The weight sensing device is disposed at the bottom of the collector 20 and is used to monitor the weight of the oil in the collector 20. The weight sensing device is electrically connected to the recovery pump 30, and the recovery pump 30 is configured to stop running when the weight of the oil monitored by the weight sensing device is less than or equal to the weight lower limit threshold. For example, when the weight sensing device detects that there is no oil in the collector 20, the recovery pump 30 stops running. In this way, the automatic judgment of the timing of stopping the recovery pump 30 can be realized according to the actual situation of the oil in the collector 20.

[0064] In some embodiments, the oil collection system further includes a second observation device 231, which is arranged in the recovery pipe 23. The second observation device 231 can be a sight glass, which is used to directly observe the oil situation inside the recovery pipe 23. In other embodiments, the second observation device 231 can be an image acquisition device, which can include but is not limited to a camera, a scanner and other devices with a camera function. Through the second observation device 231, it can be determined whether the oil is retained in the recovery pipe 23, and it can be further determined whether the recovery pump 30 has completely completed the recovery of the oil in the collector 20, thereby optimizing the recovery effect. In addition, when the recovery pump 30 is configured to be turned off after the target time, the target time can be corrected according to the oil situation determined by the second observation device 231. Specifically, if after the target time, it is observed through the second observation device 231 that there is still oil that has not been recovered, then the correction time is added on the basis of the target time to complete the oil recovery. Alternatively, in some embodiments, if the second observation device 231 observes that all oil product recovery has been completed before the target time, the correction time may be appropriately subtracted from the target time.

[0065] In some embodiments, the oil collection system further includes a recovery pipeline valve 232, which is connected to the recovery pipeline 23 and can be controlled to open to allow passage of the recovery pipeline 23, or controlled to close to seal the recovery pipeline 23. During normal operation of the oil collection system, the recovery pipeline valve 232 is in a normally open state. In this way, when the recovery pump 30 or the collector 20 needs to be repaired or disassembled, the recovery pump 30 and the collector 20 can be isolated by closing the recovery pipeline valve 232.

[0066] In some embodiments, the oil collection system further includes a filter 233 connected to the recovery pipe 23. In this way, the oil is initially filtered before entering the recovery pump 30, which can prevent large impurities from entering the recovery pump 30 and causing damage to the recovery pump 30.

[0067] In some embodiments, the oil collection system further includes a first pressure gauge 311 and a second pressure gauge 312. The first pressure gauge 311 is disposed at the inlet end 301 of the recovery pump 30, and the second pressure gauge 312 is disposed at the outlet end 302 of the recovery pump 30. The first pressure gauge 311 and the second pressure gauge 312 can monitor the pressure conditions before and after the recovery pump 30, so as to promptly detect abnormal operation of the recovery pump 30. Optionally, the first pressure gauge 311 and the second pressure gauge 312 are shock-resistant pressure gauges, which are conducive to reducing interference and improving the accuracy of pressure detection.

[0068] In some embodiments, the oil collection system further includes a check valve 330, which is disposed at the outlet end 302 of the recovery pump 30. The outlet end 302 of the recovery pump 30 is often connected to a storage device such as an oil tank for storing oil or an oil processing device for subsequent processing of the collected oil. The check valve 330 is provided here to help avoid the risk of oil backflow and damage to the recovery pump 30.

[0069] In the description of the present application, it should be understood that the terms "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0070] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0071] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0072] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0073] It should be noted that when an element is referred to as being "fixed to", "disposed on", "fixedly arranged on" or "installed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. Furthermore, when an element is considered to be "fixedly connected to" another element, the two may be fixed in a detachable connection manner or in a non-detachable connection manner, such as socketing, snap-fitting, integral molding, welding, etc., which can be achieved in traditional technologies and will not be repeated here.

[0074] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the phrase "includes a ..." defines an element, and does not exclude the presence of other identical elements in the process, method, commodity or device including the element.

Claims

1. An oil collection system, characterized in that: include: at least one separator for containing oil; A collector, the collector comprising an oil inlet and an oil outlet, the oil inlet being connected to all the separators through a collecting pipe; a collecting valve, arranged in the collecting pipe; when the collecting valve is in an open state, the collector is connected to the at least one separator; when the collecting valve is in a closed state, the collector is isolated from all the separators; A liquid level monitoring device, arranged in the collector, for monitoring the liquid level of the oil in the collector; The recovery device includes a recovery pump, which is connected to the oil outlet of the collector and electrically connected to the liquid level monitoring device; the recovery pump is configured to start when the liquid level monitoring device detects that the liquid level of the oil in the collector reaches a height threshold.

2. The oil collection system according to claim 1, characterized in that: The recovery pump includes a first working state and a second working state; In the first working state, the recovery pump operates at a first power to recover the bottom oil in the separator; In the second working state, the recovery pump operates at a second power to drain all the oil in the separator; The first power is less than the second power.

3. The oil collection system according to claim 1, characterized in that: The recovery pump includes an outlet end; the oil collection system also includes: A recovery valve, arranged at the outlet end of the recovery pump and electrically connected to the liquid level monitoring device; The recovery valve is configured to open when the liquid level of the oil product in the collector reaches the height threshold.

4. The oil collection system according to claim 1, characterized in that: The recovery pump includes an inlet end, and the oil outlet of the collector is connected to the inlet end of the recovery pump through a recovery pipeline; the oil collection system also includes: a first flange connected to the oil outlet of the collector; The second flange connects the first flange and the recovery pipeline.

5. The oil collection system according to claim 1, characterized in that: Also includes: A vent pipe, disposed on the top of the collector, for connecting the collector with the external environment; The vent valve is arranged on the vent pipe and can be controlled to open to allow passage of the vent pipe or controlled to close to seal the vent pipe.

6. The oil collection system according to claim 5, characterized in that: The vent valve is configured to open when the current demand is to recover the bottom oil in the separator, and to close when the current demand is to drain all the oil in the separator.

7. The oil collection system according to claim 5, characterized in that: Also includes: A third flange connected to one end of the vent pipe close to the collector; The fourth flange connects the third flange and the collector.

8. The oil collection system according to claim 5, characterized in that: Also includes: an anti-overflow valve connected to the vent pipe; the anti-overflow valve is configured to close when the oil reaches a target height to seal the vent pipe; Wherein, the target height is greater than the height threshold.

9. The oil collection system according to claim 8, characterized in that: The recovery pump includes an inlet end, and the oil collection system also includes: A pressure sensing device is arranged at the inlet end of the recovery pump; An alarm device is electrically connected to the pressure sensing device; the alarm device is configured to issue an alarm prompt when the anti-overflow valve is closed and the pressure value detected by the pressure sensing device is greater than or equal to a pressure threshold.

10. The oil collection system according to claim 8, characterized in that: Also includes: The first observation device is connected to the vent pipe and is arranged above the anti-overflow valve.

11. The oil collection system according to claim 5, characterized in that: Also includes: The fire arrester is arranged at the end of the vent pipe on a side away from the collector.

12. The oil collection system according to claim 1, characterized in that: Also includes: A detection tube installed on the side wall of the collector, used to connect the inner cavity of the collector with the external environment, and the installation height of the detection tube is greater than or equal to the height threshold; The detection valve is arranged on the detection tube and can be controlled to open to allow the detection tube to pass or controlled to close to seal the detection tube; the detection valve is configured to open to realize fault detection of the liquid level monitoring device.

13. The oil collection system according to claim 1, characterized in that: Also includes: A weight sensor device, disposed at the bottom of the collector, for monitoring the weight of the oil in the collector; The weight sensing device is electrically connected to the recovery pump, and the recovery pump is configured to stop running when the weight of the oil product monitored by the weight sensing device is less than or equal to a lower weight threshold.

14. The oil collection system according to claim 1, characterized in that: Also includes: The oil product status monitoring device is connected to the collection pipeline and is used to monitor the status of the oil product flowing through the collection pipeline.

15. The oil collection system according to claim 14, characterized in that: The oil product status monitoring device is electrically connected to the collecting valve, and the collecting valve is configured to be closed when the oil product in the collecting pipeline is in a state of not containing water and impurities.

16. The oil collection system according to claim 14, characterized in that: The oil product status monitoring device includes a sampler; The collecting valve comprises a first valve and a second valve, which are respectively arranged on both sides of the sampler, and the first valve is arranged on a side close to the separator, and the second valve is arranged on a side close to the collector.

17. The oil collection system according to claim 16, characterized in that: The first valve is configured to open when the current demand is to recover the bottom oil in the separator, and the second valve is configured to open after a delay of a first time period after the first valve is opened.

18. The oil collection system according to claim 16, characterized in that: The collection pipeline comprises: a main collecting pipeline connected with the first valve, the sampler and the second valve; An auxiliary collecting pipeline is connected to a third valve, and one end of the auxiliary collecting pipeline is connected to the main collecting pipeline between the first valve and the separator, and the other end is connected to the main collecting pipeline between the second valve and the collector.

19. The oil collection system according to claim 18, characterized in that: The third valve is configured to open when the current demand is to recover the bottom oil in the separator, the first valve is configured to open after the third valve opens for a second time period, and the second valve is configured to open after the first valve opens for a third time period.

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