CN113048407A - System for detecting and dredging blockage point of aircraft waste water pipeline and control method thereof - Google Patents
System for detecting and dredging blockage point of aircraft waste water pipeline and control method thereof Download PDFInfo
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- CN113048407A CN113048407A CN202110290702.8A CN202110290702A CN113048407A CN 113048407 A CN113048407 A CN 113048407A CN 202110290702 A CN202110290702 A CN 202110290702A CN 113048407 A CN113048407 A CN 113048407A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
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Abstract
本发明提供了一种用于检测和疏通飞机废水管路堵点的系统及其控制方法。在该系统中飞机上需要排放废水的设备通过废水管路与废水箱连接，该系统包括设置在设备与废水箱之间的废水管路上的至少一个压力传感器，在设备排放废水时，如果与压力传感器相对应的弯头中存在堵塞，则压力传感器会在对应的阈值时间内无法检测到高于检测到阈值压力的脉冲压力。该系统还包括逻辑控制单元，其配置成响应于压力传感器在对应的阈值时间内没有检测到高于阈值压力的脉冲压力而确定该相应弯头处存在堵塞并且开启气源管路上安装的距离该相应弯头最近处的控制阀以冲洗废水管路。本发明还包括用于控制上述检测和疏通废水管路堵点的系统的方法。
The present invention provides a system and a control method for detecting and clearing the blocked points of aircraft waste water pipelines. In this system, the equipment that needs to discharge waste water on the aircraft is connected to the waste water tank through the waste water pipeline, and the system includes at least one pressure sensor arranged on the waste water pipeline between the equipment and the waste water tank. If there is a blockage in the elbow corresponding to the sensor, the pressure sensor cannot detect the pulse pressure higher than the detected threshold pressure within the corresponding threshold time. The system also includes a logic control unit configured to, in response to the pressure sensor not detecting a pulse pressure above a threshold pressure within a corresponding threshold time, determine that there is a blockage at the corresponding elbow and open the distance installed on the air supply line. Control valve closest to the corresponding elbow to flush the waste line. The present invention also includes a method for controlling the above-described system for detecting and clearing blocked waste water lines.
Description
Technical Field
The present invention relates to aircraft, and more particularly to a system for detecting and unblocking an aircraft waste line blockage and a method of controlling the same.
Background
The two ends of a waste water conveying pipeline of the civil aviation aircraft waste water system are respectively provided with an interface connected with a cabin environment and a waste water tank vacuum environment, and grey water/waste water is discharged into the waste water tank under the action of vacuum pressure difference.
In the waste water conveying pipeline of the civil aviation aircraft at the present stage, foreign matters are thrown into the waste water conveying pipeline due to wrong use of passengers or the waste water conveying pipeline is extremely easy to block at the pipeline elbow due to unreasonable pipeline design. When a waste water system of a civil aviation aircraft is blocked, an airline usually stops the aircraft, detaches each section of waste water delivery pipe section by section and checks whether the blockage occurs, which increases the airline operation cost due to an excessively long maintenance time. Therefore, it is desirable to provide a pipeline structure and a control method thereof, wherein the pipeline structure can quickly position the blockage point of the wastewater conveying pipeline and can be dredged automatically.
The patent provides a system for detecting and dredging aircraft waste water pipeline plugging points and a control method thereof, and the system has the advantages of automatically alarming, quickly positioning the plugging points, automatically dredging the plugging, reducing the fault frequency and the maintenance cost and the like.
The invention content is as follows:
the following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
In order to solve the above problems, the present application is expected to provide a system for detecting and dredging the blockage of an aircraft wastewater pipeline and a control method thereof, which can automatically alarm, quickly locate the blockage, automatically dredge the blockage, and reduce the failure frequency and the maintenance cost.
The invention provides a system for detecting blockage of a waste water pipeline of an aircraft, wherein equipment needing to discharge waste water on the aircraft is connected with a waste water tank through the waste water pipeline, and the system comprises: at least one pressure sensor disposed in the waste water line between the appliance and the waste water tank, wherein the at least one pressure sensor is located near an outlet of a respective one of the at least one elbow of the waste water line, the at least one pressure sensor being unable to detect a pulse pressure above a detected threshold pressure for a corresponding threshold time when the appliance is discharging waste water if a blockage is present in the at least one elbow corresponding to the at least one pressure sensor.
In a system according to an embodiment of the invention, the system further comprises a logic control unit communicatively coupled with the at least one pressure sensor, the logic control unit configured to: determining that there is no blockage at a first elbow in response to a first pressure sensor of the at least one pressure sensor located near an outlet of the first elbow detecting a pulse pressure above the threshold pressure for a corresponding first threshold time while the apparatus is discharging wastewater; determining whether a second pressure sensor of the at least one pressure sensor located near an outlet of a second bend detects a pulse pressure above the threshold pressure within a corresponding second threshold time in response to determining that an occlusion is not present at the first bend.
In a system according to an embodiment of the invention, the system further comprises a logic control unit communicatively coupled with the at least one pressure sensor, the logic control unit configured to: determining that a blockage exists at a respective elbow of the at least one pressure sensor located near its outlet in response to one of the pressure sensors not detecting a pulse pressure above the threshold pressure for a corresponding threshold time while the apparatus is discharging wastewater.
In a system according to an embodiment of the invention, the system further comprises a gas source line through which the waste water line is connected with an on-board gas source system, and the logic control unit is further configured to: opening a control valve mounted on the source line proximate the respective elbow to flush the waste line in response to determining that a blockage is present at the respective elbow; and closing the control valve after flushing for a specified flush time.
In a system according to an embodiment of the invention, the logic control unit is further configured to: determining that a blockage at the respective elbow is unblocked in response to a rate of decrease in a pressure value detected by the pressure sensor reaching a specified range; and reporting to an onboard maintenance system that the blockage at the respective elbow is unclogged.
In a system according to an embodiment of the invention, the logic control unit is further configured to: determining that the blockage at the respective elbow is not unclogged in response to a rate of decrease in the pressure values detected by the pressure sensor failing to reach a specified range; alarming to a cabin core system; feeding back the position information of the corresponding elbow to an airborne maintenance system; and opening a pressure relief valve of the gas source line to depressurize the system.
In a system according to an embodiment of the invention, the system further comprises: a first one-way valve disposed between the apparatus and the waste line, or a second one-way valve disposed between the waste line and the gas source line.
In a system according to an embodiment of the invention, the corresponding threshold time is related to one or more of the following factors: routing of the waste water pipeline, relative distance between the equipment and the corresponding elbow, pressure difference between the inside and the outside of the cabin, or a combination thereof.
The invention also provides a method for detecting a waste water pipe blockage of an aircraft, wherein equipment on the aircraft requiring waste water discharge is connected to a waste water tank via the waste water pipe and at least one pressure sensor is arranged on the waste water pipe, the at least one pressure sensor being located in the vicinity of an outlet of a respective elbow of at least one elbow of the waste water pipe, the method comprising: determining that a blockage exists at the respective elbow in response to the at least one pressure sensor not detecting a pulse pressure above a threshold pressure for a threshold time while the apparatus is discharging wastewater.
In a method according to an embodiment of the invention, the method further comprises: opening a control valve mounted on an air supply line proximate the respective elbow to flush the waste water line in response to determining that a blockage exists, wherein the waste water line is connected with an on-board air supply system through the air supply line; and closing the control valve after flushing for a specified flush time.
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. Additional aspects, features and/or advantages of various embodiments will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.
Drawings
So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only some typical aspects of this invention and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. In the drawings, like reference numerals are used to designate like elements throughout. It is noted that the drawings described are only schematic and are non-limiting. In the drawings, the size of some of the elements may be exaggerated and not drawn on scale for illustrative purposes.
FIG. 1A illustrates a diagram of an example architecture of a system for detecting and unblocking an aircraft waste pipe blockage, according to an embodiment of the invention.
FIG. 1B illustrates a diagram of an example of a system for detecting and unblocking an aircraft waste pipe blockage, according to an embodiment of the invention.
FIG. 2 illustrates a block diagram of the workflow of a method of controlling a system for detecting and unblocking an aircraft waste line blockage, according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the described exemplary embodiments. It will be apparent, however, to one skilled in the art, that the described embodiments may be practiced without some or all of these specific details. In other exemplary embodiments, well-known structures or processing steps have not been described in detail in order to avoid unnecessarily obscuring the concepts of the present disclosure.
In the present specification, unless otherwise specified, the term "a or B" used through the present specification means "a and B" and "a or B", and does not mean that a and B are exclusive.
Fig. 1A illustrates a diagram of an example configuration of a piping system 100 for detecting and unblocking an aircraft waste pipe blockage, according to an embodiment of the invention. Fig. 1B illustrates an overall schematic view of a piping system for detecting and unblocking an aircraft waste pipe blockage on a civil aircraft, according to an embodiment of the present invention. A plumbing system 100 for detecting and unblocking an aircraft waste water pipeline blockage according to an embodiment of the present invention is described in detail below in conjunction with fig. 1A and 1B.
As shown in fig. 1A, a system 100 for detecting and unblocking an obstruction in an aircraft waste pipe of the present invention may include: a Logic Control Unit (LCU)101, pressure sensors 102 (shown as 102a and 102b), a three-way joint 104, a drain valve 105 (shown as a one-way valve 105a and a one-way valve 105b), a pressure relief valve 106, a control valve 107, a waste tank 108, an air supply system 109, and the like.
The pipe system 100 may be first installed with a waste pipe. Referring to fig. 1A and 1B, the waste line is connected at an inlet end to equipment 103 (such as toilets, lavatory sinks, kitchen sinks, etc.) on the aircraft requiring waste water discharge and at an outlet end to a waste reservoir 108 into which grey water/waste water can be discharged by the action of a vacuum pressure differential. The device 103 may be fitted with a grey water/waste water discharge valve 105 (typically a one-way valve). In the embodiment of the present application, a first check valve 105a is provided between the device 103 and the gas source pipeline to ensure that the waste water can only enter the waste water pipeline from the device 103, and to prevent the residual waste water in the waste water pipeline from flowing back to the passenger cabin under the action of the high-pressure gas. In the embodiment of the present application, a tee fitting 104 matching the waste water line may be selected, and a pressure sensor 102 may be fitted to one end of the tee fitting 104, and the fitting process is required to strictly ensure the airtightness of the waste water line. In an embodiment of the present application, a tee fitting 104 with a pressure sensor 102 (such as pressure sensors 102a and 102b in fig. 1A) may be installed at each outlet of the waste elbow section, each pressure sensor 102 communicatively coupled to the LCU 101 via a signal line. It should be understood that although the embodiments of the present application are illustrated as having two pressure sensors, the number of pressure sensors in the present application is not limited to two, and may have one or more pressure sensors.
In the embodiment of the present application, the piping system 100 may be further installed with an air supply piping, unlike the prior art. Referring to fig. 1A and 1B, the air source pipeline has one end connected to the airborne air source system 109 and the other end connected to the waste water pipeline, and the connection is required to strictly ensure the air tightness of both the waste water pipeline and the air source pipeline. The air source system 109 is a system for introducing air from an engine, an APU (auxiliary power unit) or a ground high-pressure air source to provide an air source for air conditioning, wing ice prevention, engine starting, fuel tank inerting and water tank pressurization, so as to meet the pressure, temperature and flow requirements of a downstream air using system. In an embodiment of the present application, the air supply line and the waste water line may have a plurality of connection ends 110, and these connection ends 110 may be located at the front body or the rear body. In a preferred embodiment of the present application, the connection end 110 may be closer to the device 103 requiring the discharge of waste water than the plurality of pressure sensors 102. In the embodiment of the present application, referring to fig. 1A and 1B, a pressure release valve 106, a second check valve 105B, and a control valve 107 are installed on the air supply line in this order at the connection end 110. The second check valve 105b can prevent residual wastewater in the wastewater pipeline from entering the gas source system and polluting the onboard gas source. The functions of the pressure release valve 106 and the control valve 107 will be described in detail later.
In an embodiment of the present application, the piping system 100 may be controlled. During operation of the pipe system 100, the pressure sensor 102 at the elbow section will continuously monitor the pressure value of the pipe system 100. When the flushing button is pressed by the device 103, the discharge valve (one-way valve 105a) is opened, and at this time, due to the difference in pressure between the inside and outside of the cabin or the operation of a vacuum generator (not shown, generally installed on a vacuum vent line of a waste water tank, and the vacuum vent line connected to the waste water tank), the measured value of the pressure sensor 102 rapidly rises to a certain stable value, and when waste water passes through the elbow section of the waste water tank, the pressure sensor 102 detects a pulse pressure, and it is determined that the elbow section is operating normally. If the pressure sensor 102 does not detect the pulse pressure or the detected pulse pressure is lower than the threshold value, it is determined that the waste water does not pass through the elbow section, it is determined that the blockage occurs at the elbow section, and the pipeline system 100 enters a blockage removal procedure. The LCU 101 may autonomously control the full aircraft bleed valve 105 to remain closed, open the air supply line control valve 107 at the nearest location of the front or rear fuselage to the elbow section, flush the waste water line with high pressure air supplied by the air supply system, and then close the control valve 107 after the expiration of a timer (which may specify a flush time, e.g., 5s-10 s). If the system pressure before the plugging point (P) is normally reduced, judging that the plugging fault is eliminated; if the system pressure remains constant before the plugging point or the drop rate is too low (e.g., less than 50%), it is determined that the plugging fault remains, the LCU 101 may alert the Cabin Core System (CCS) that a plugging fault exists in the wastewater system, send plugging point information (e.g., position information for the corresponding elbow or pressure sensor) to the on-board maintenance system (OMS), and then open the air supply line pressure relief valve 106 to depressurize the wastewater line to return to normal air pressure. Additionally or alternatively, the operator may control an on-board maintenance system (OMS), send commands to the LCU 101 to control the full aircraft discharge valve 105 to remain closed, open the air supply line control valve 107 in the forward or aft fuselage nearest the elbow section, and flush the waste water line with high pressure air provided by the air supply system.
Fig. 2 illustrates a block diagram of a workflow 200 for controlling a conduit system for detecting and unblocking an aircraft waste conduit blockage in accordance with an embodiment of the present invention.
In step 201, a flush button of the apparatus 103 requiring the discharge of wastewater is pressed.
Subsequently, at step 202, the facility 103 discharge valve is opened to discharge the waste water by the pressure difference inside and outside the cabin or the vacuum generator operation. Accordingly, all pressure sensor 102 measurements quickly rise to a certain steady value AnFor example, the stable value at the first pressure sensor 102a is A1The steady value at the second pressure sensor 102b is A2Etc., which may be the same or different.
In one aspect, at step 203, the wastewater will pass through the first elbow segment if the first pressure sensor 102a detects a pulse pressure B1The LCU 101 may then determine that the first elbow segment is operating properly. For example, at pulse pressure B1Greater than threshold pressure BTAnd when the first elbow section works normally, the first elbow section works normally.
Further, in step 204, the wastewater passes through the second elbow section, and the second pressure sensor 102B determines whether the pulse pressure B is detected2And further judging whether the second elbow section works normally or not. For example, at pulse pressure B2Greater than threshold pressure BTAnd when the second elbow section works normally, the second elbow section works normally. In an embodiment of the present application, the pulse pressure B should be detected within a threshold time period2The threshold time period is related to the routing arrangement of the waste line, the relative distance from the first elbow section to the second elbow section or from the device 103 to the second elbow section, and/or the pressure difference inside and outside the nacelle, etc. In the practice of the present applicationIn an embodiment, the threshold time period may be set by the LCU 101. If the second pressure sensor 102B detects the pulse pressure B2The second elbow section may be judged to be operating normally and the wastewater may continue to pass through a third elbow section (not shown), and so on.
After the wastewater has completed through all of the elbow sections and flows into wastewater tank 108, at step 210, it is determined that piping system 100 is operating properly and no plugging has occurred.
On the other hand, in step 203, if the first pressure sensor 102a does not detect the pulse pressure B1Or the pulse pressure B1Less than threshold pressure BTThen the wastewater is not considered to have normally passed through the first elbow segment, and thus the blockage at the first elbow segment is determined at 205 and the pipe system 100 enters a de-plugging procedure. Additionally, the location of the first elbow segment may be reported to an onboard maintenance system. Similarly, at step 204, if the second pressure sensor 102B does not detect the pulse pressure B2Or the pulse pressure B2Less than threshold pressure BTThen the wastewater is deemed to have not passed through the second elbow segment, a determination is made at step 205 that a blockage has occurred at the second elbow segment, and the piping system 100 may report the location of the second elbow segment to the on-board maintenance system and enter a de-plugging routine.
At step 206, a block clearing routine is initiated. The processor (e.g., LCU 101) may control the full aircraft bleed valve 105 to remain closed, open the air supply line control valve 107 in the forward or aft fuselage nearest the plugged elbow section for a 5s-10s flush time, and then close the control valve 107. Additionally, the LCU 101 may record this operation back to the on-board maintenance system, such as that a blockage at the corresponding elbow has been cleared, position information of the corresponding elbow or pressure sensor, etc.
At step 207, the pre-occlusion pressure sensor detects its system stabilization pressure AnFor example, in the event of a blockage in the first elbow section, the first system stabilization pressure A detected by the first pressure sensor 102a1And (6) judging. If the system stabilizes pressure A before pluggingnWhen the descending rate reaches a predetermined threshold (for example, the descending rate is greater than or equal to 50%), it is determined that the blockage is eliminated, and in step 210, the piping system 1 is determined00 working normally. Additionally or alternatively, if a blockage is detected at other elbow segments, step 206 may be similarly performed to begin the dredging process. On the other hand, if the system stabilizes pressure A before the blockagenIf the system remains constant for a threshold period of time (which may be set to, for example, 10s), or if the rate of decrease is below a set threshold (e.g., the rate of decrease is below 50%), then a determination is made that a jam fault still exists, a warning may be sent to the Cabin Core System (CCS) in step 208, a jam fault may exist in the wastewater system, and a jam point message (e.g., the position of the first pressure sensor 102 a) may be sent to the on-board maintenance system, and then the system may be depressurized by opening the air supply line pressure relief valve 106 in step 209.
The above describes a system for detecting and unblocking a blockage in an aircraft waste pipe and a control method thereof according to the present invention, which has at least the following advantages over the prior art:
(1) the positioning efficiency of the plugging point is improved;
(2) the pipeline is automatically dredged through the airborne gas source pipeline, the pipeline blockage failure frequency is effectively reduced, the situation that the aircraft is stopped and a waste water pipeline is dismantled to dredge the pipeline every time is avoided, the maintenance time is shortened, and the operation cost is reduced; and
(3) and automatic alarm and point blockage information report are performed, and the maintenance cost is reduced.
Reference throughout this specification to "an embodiment" means that a particular described feature, structure, or characteristic is included in at least one embodiment. Thus, usage of such phrases may not refer to only one embodiment. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
One skilled in the relevant art will recognize, however, that the embodiments can be practiced without one or more of the specific details, or with other methods, resources, materials, and so forth. In other instances, well-known structures, resources, or operations have not been shown or described in detail merely to observe obscuring aspects of the embodiments.
While embodiments and applications have been illustrated and described, it is to be understood that the embodiments are not limited to the precise configuration and resources described above. Various modifications, substitutions, and improvements apparent to those skilled in the art may be made in the arrangement, operation, and details of the methods and systems disclosed herein without departing from the scope of the claimed embodiments.
In the above detailed description, numerous specific details are set forth in order to provide a thorough understanding of claimed subject matter. However, it will be understood by those skilled in the art that claimed subject matter may be practiced without these specific details. In other instances, methods and apparatus known to those of ordinary skill in the art have not been described in detail so as not to obscure claimed subject matter.
The terms "and," "or," and/or "as used herein may include a variety of meanings that are also contemplated depending, at least in part, on the context in which such terms are used. In general, "or" if used to associate a list, such as A, B or C, is intended to mean A, B and C (used herein in an inclusive sense) and A, B or C (used herein in an exclusive sense). In addition, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in the singular or may be used to describe a plurality or some other combination of features, structures, or characteristics. However, it should be noted that this is merely an illustrative example and claimed subject matter is not limited to this example.
While there has been illustrated and described what are presently considered to be example features, it will be understood by those skilled in the art that various other modifications may be made, and equivalents may be substituted, without departing from claimed subject matter. Additionally, many modifications may be made to adapt a particular situation to the teachings of claimed subject matter without departing from the central concept described herein.
An implementation (1) may be a system for detecting a waste line plugging point of an aircraft, wherein equipment on the aircraft requiring waste water discharge is connected to a waste tank via a waste line, the system comprising: at least one pressure sensor disposed on the waste line between the appliance and the waste tank, wherein the at least one pressure sensor is located near an outlet of a respective one of the at least one elbow of the waste line, the at least one pressure sensor being unable to detect a pulse pressure above a detected threshold pressure for a corresponding threshold time when the appliance is discharging waste water if a blockage is present in the at least one elbow corresponding to the at least one pressure sensor.
There may be some implementations (2) of the above system (1), wherein the system further comprises a logic control unit communicatively coupled with the at least one pressure sensor, the logic control unit configured to: determining that there is no blockage at the first elbow when the apparatus discharges wastewater in response to a pulsed pressure detected by a first pressure sensor of the at least one pressure sensor located near an outlet of the first elbow for a corresponding first threshold time being above a threshold pressure; a determination is made as to whether a second pressure sensor of the at least one pressure sensor located near an outlet of the second elbow detects a pulse pressure above the threshold pressure within a corresponding second threshold time in response to determining that an occlusion is not present at the first elbow.
There may be some implementations (3) of the above system (1 or 2), wherein the system further comprises a logic control unit communicatively coupled with the at least one pressure sensor, the logic control unit configured to: when the apparatus discharges wastewater, a determination is made that a blockage exists at a respective elbow of at least one pressure sensor located near its outlet in response to the pressure sensor not detecting a pulse pressure above a threshold pressure for a corresponding threshold time.
There may be some implementations (4) of the system (3) described above, wherein the system further comprises a gas source line, the waste water line is connected with the on-board gas source system through the gas source line, and the logic control unit is further configured to: opening a control valve mounted on the air supply line proximate the respective elbow to flush the waste line in response to determining the presence of a blockage at the respective elbow; and closing the control valve after flushing for a specified flush time.
There may be some implementations (5) of the system (4) described above, wherein the logic control unit is further configured to: determining that the blockage at the corresponding elbow is unblocked in response to the rate of decrease in the pressure value detected by the pressure sensor reaching a specified range; and reporting to the onboard maintenance system that the blockage at the respective elbow is unclogged.
There may be some implementations (6) of the system (4) described above, wherein the logic control unit is further configured to: determining that the blockage at the corresponding elbow is not unblocked in response to the rate of decrease in the pressure value detected by the pressure sensor not reaching a specified range; alarming to a cabin core system; feeding back the position information of the corresponding elbow to an airborne maintenance system; and opening a pressure relief valve of the gas source pipeline to depressurize the system.
There may be some implementations (7) of the above system (4), wherein the system further comprises: the first check valve is arranged between the equipment and the waste water pipeline, or the second check valve is arranged between the waste water pipeline and the air source pipeline.
There may be some implementations (8) of the system (1) above, wherein the corresponding threshold time is related to one or more of the following factors: routing of the waste water line, a relative distance between the equipment and a corresponding one of the at least one elbow, a differential pressure inside and outside the cabin, or a combination thereof.
An implementation (8) may be a method for detecting a waste-water-line blockage of an aircraft, wherein equipment on the aircraft requiring waste water discharge is connected to a waste-water tank via a waste-water line, and at least one pressure sensor is provided on the waste-water line, the at least one pressure sensor being located in the vicinity of an outlet of a respective one of at least one elbow of the waste-water line, the method comprising: when the apparatus discharges wastewater, a determination is made that a blockage is present at the respective elbow in response to the at least one pressure sensor not detecting a pulse pressure above a threshold pressure for a threshold time.
There may be some implementations (10) of the method (9) above, wherein the method further comprises: opening a control valve mounted on the air supply line proximate the respective elbow in response to determining the presence of the blockage to flush a waste water line, wherein the waste water line is connected to the on-board air supply system via the air supply line; and closing the control valve after flushing for a specified flush time.
Claims (10)
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| CN202110290702.8A CN113048407A (en) | 2021-03-18 | 2021-03-18 | System for detecting and dredging blockage point of aircraft waste water pipeline and control method thereof |
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| CN202110290702.8A CN113048407A (en) | 2021-03-18 | 2021-03-18 | System for detecting and dredging blockage point of aircraft waste water pipeline and control method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114470947A (en) * | 2022-01-11 | 2022-05-13 | 南昌县供水有限责任公司 | Real-time pressure remote transmission system of urban water supply pipe network |
| CN115815246A (en) * | 2022-12-05 | 2023-03-21 | 核工业理化工程研究院 | Reverse purging method and device for blocking of negative pressure vacuum pipeline |
| CN118775077A (en) * | 2024-08-07 | 2024-10-15 | 潍柴动力股份有限公司 | A voltage stabilizer fault detection method, device, system and storage medium |
| CN120909114A (en) * | 2025-06-26 | 2025-11-07 | 江西江铜华东铜箔有限公司 | Intelligent pipeline flushing control method and system based on pressure change |
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| CN118775077A (en) * | 2024-08-07 | 2024-10-15 | 潍柴动力股份有限公司 | A voltage stabilizer fault detection method, device, system and storage medium |
| CN120909114A (en) * | 2025-06-26 | 2025-11-07 | 江西江铜华东铜箔有限公司 | Intelligent pipeline flushing control method and system based on pressure change |
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