Pipeline damage on-line monitoring simulation system and method in low-temperature environment
By designing an online pipeline damage monitoring simulation system in a low-temperature environment and monitoring the pressure, displacement and liquid level changes of the pipeline in real time, the limitations of traditional detection methods are overcome, and pipeline safety monitoring and maintenance optimization in a low-temperature environment are achieved.
Patent Information
- Application Number
- CN202510950688.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-10
- Publication Date
- 2025-10-17
AI Technical Summary
Existing technologies make it difficult to monitor pipeline damage and leakage in real time in low-temperature environments. Traditional detection methods have fixed cycles, limited scope, and are greatly influenced by human factors. In addition, maintenance strategies rely on experience, resulting in unnecessary cost increases and failure risks.
An online monitoring simulation system for pipeline damage in a low-temperature environment was designed. It includes an accumulator, a tested pipeline, a hydraulic push rod, a pressure sensor, a heating device, a control valve, and a data acquisition module. By simulating pipeline damage, the pressure, displacement, and liquid level changes are monitored in real time. The control module and data acquisition module are used to determine the pipeline status.
It realizes real-time monitoring of pipeline damage in low-temperature environments, reduces detection costs, avoids the complexity and safety hazards of on-site testing, provides scientific data support, and provides a basis for optimizing maintenance strategies.
Smart Images
Figure CN120800665A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of pipeline state online monitoring, and particularly relates to a pipeline breakage online monitoring simulation test in a low-temperature environment. BACKGROUND
[0002] With the continuous development of the industrial and engineering fields, pneumatic systems and hydraulic systems are widely used in various mechanical devices due to their high efficiency and stability. These systems are usually connected to actuators (such as air cylinders, hydraulic motors, etc.) through pipelines by a power source (such as a compressed gas generating device or a hydraulic pump), and precise control of the actuators is achieved through various control valves. However, in practical applications, pipelines, as a key component of the system, face many challenges.
[0003] Firstly, the high-pressure gas or liquid acting inside the pipeline can accelerate the aging process of the pipe material. Secondly, extreme environmental conditions, especially low-temperature environments, have a significant impact on the physical properties of the pipeline material, leading to embrittlement and a decrease in sealing performance, thereby increasing the risk of leakage and breakage. Breakage and leakage of the pipeline not only can cause the system pressure to drop, affecting the normal operation of the actuator, but also can cause environmental pollution, resource waste, and equipment performance loss, etc. In some critical application fields (such as vehicle braking systems, life-saving device driving systems, etc.), sudden breakage of the pipeline can even directly threaten the safety of the operator.
[0004] Currently, the detection means for pipeline breakage and leakage mainly rely on artificial periodic inspection (such as spot inspection, patrol, etc.). However, this traditional detection method has obvious limitations: first, the detection period is fixed, and the pipeline state cannot be monitored in real time; second, the detection range is limited, and it is difficult to cover all potential risk points in a complex pipeline network; third, the detection results are greatly affected by human factors, and false negatives or false positives are likely to occur. Extreme low-temperature conditions can accelerate the aging process of the pipeline material, and harsh weather conditions make the implementation of artificial detection much more difficult, and the shortcomings of existing detection means are further magnified.
[0005] In addition, the existing pipeline maintenance strategy mainly adopts a preventive replacement system, that is, the pipe material is replaced periodically according to empirical values, rather than based on the actual state of the pipeline. This approach not only increases unnecessary maintenance costs, but also can lead to sudden failure risks of the pipeline within the replacement period. SUMMARY
[0006] Therefore, the present application develops a pipeline breakage online monitoring simulation system and method in a low-temperature environment to verify the mechanism research and system test verification of the pipeline online monitoring system.
[0007] In order to achieve the above object, the technical scheme of the present application provides a pipeline breakage online monitoring simulation system in a low-temperature environment, comprising an accumulator, a measured pipeline and a hydraulic push rod, the measured pipeline is connected with the accumulator and the hydraulic push rod to form a closed hydraulic circuit, a pressure sensor for monitoring the pressure change in the pipeline in real time is installed on the measured pipeline; the hydraulic push rod drives the piston movement by using the pressure provided by the accumulator to realize displacement change; the measured pipeline is connected with a breakage simulation pipeline, the breakage simulation pipeline is connected with an oil receiver through a control valve for simulating the leakage phenomenon when the pipeline is broken; the oil receiver is used for receiving the hydraulic oil flowing out of the breakage simulation pipeline.
[0008] Preferably, the performance of the breakage simulation pipeline is consistent with that of the measured pipeline.
[0009] Preferably, the data acquisition module acquires the signals of the pressure sensor, the hydraulic push rod and the oil receiver, and judges the pipeline breakage condition.
[0010] Preferably, the oil receiver is provided with a liquid level sensor inside, which monitors the oil quantity change in real time and transmits the liquid level signal to the data acquisition module.
[0011] Preferably, a heating device is installed on the outer wall of the measured pipeline, which adaptively adjusts the heating power according to the change of the environmental temperature.
[0012] Preferably, the temperature control of the heating device is responsible by a control module, which adjusts the power output of the heating device through a control circuit to ensure the stable working state of the measured pipeline in the low-temperature environment.
[0013] Preferably, the heating device adopts a companion heater which adaptively adjusts the heating power according to the change of the environmental temperature to prevent the solidification of the hydraulic oil due to low temperature or the embrittlement of the pipeline due to low temperature.
[0014] Preferably, the control valve adopts a low-temperature electromagnetic valve which is connected with the control module through a control circuit and is remotely controlled by the control module in the opening and closing state.
[0015] Preferably, the accumulator serves as a core power source, stores hydraulic oil inside and provides stable pressure for the system through the pressure maintaining capacity.
[0016] The technical scheme of the present application also provides a pipeline breakage online monitoring simulation method in a low-temperature environment, comprising the following steps:
[0017] Placing the measured pipeline in a low-temperature test chamber and lowering the environmental temperature to a target value;
[0018] Connecting all pipelines and cables to ensure that all components are normally connected;
[0019] The data acquisition module is opened to start collecting pressure, displacement and liquid level signals in real time;
[0020] When it is necessary to simulate pipeline breakage, the control valve is opened by the control module, hydraulic oil flows into the oil receiver through the breakage simulation pipeline, the pressure sensor detects a pressure drop in the pipeline, the displacement signal of the hydraulic push rod changes, and the data acquisition module judges the pipeline breakage condition according to these signals;
[0021] After the test is completed, the control valve is closed, and the system returns to the initial state.
[0022] In summary, the present application has the following beneficial technical effects:
[0023] The present application proposes a pipeline breakage online monitoring simulation system in a low-temperature environment, which has a simple design principle and is easy to implement, and has high practical value. By simulating the polar low-temperature environment in a low-temperature laboratory, the present application can truly reproduce the operating state of the pipeline under extreme climate conditions, thereby providing high-reference-value data support for verifying the reliability and durability of the pipeline system. Compared with the traditional in-situ test method, the present application greatly reduces the detection cost, and at the same time avoids the complexity and safety hazards that may be brought about by field testing.
[0024] In addition, the control module and the data acquisition module of the present application are installed in a normal-temperature environment, which not only ensures the comfort of the operating personnel, but also ensures the stability and reliability of the system. The operating personnel can start or stop the system at any time, which is convenient for flexible testing work. At the same time, through the collected multi-dimensional data (such as pressure, displacement and liquid level changes), the present application also supports in-depth research on the pipeline breakage mechanism, and provides a scientific basis for subsequent optimization design and improvement of maintenance strategies. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 The present application is a low-temperature environment pipeline breakage online monitoring simulation system principle diagram.
[0026] Figure legend: 1, accumulator; 2, hydraulic push rod; 3, measured pipeline; 31, breakage simulation pipeline; 4, heating device; 5, control valve; 6, control module; 7, oil receiver; 8, pressure sensor; 9, data acquisition module. DETAILED DESCRIPTION
[0027] With reference to the accompanying drawings: the technical solutions in the embodiments of the present application will be apparently and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.
[0028] The present application relates to a kind of pipeline breakage on-line monitoring simulation system in low temperature environment, the system can monitor the displacement change of the pressure change and hydraulic actuator of pipeline in real time by simulating the breakage of pipeline in low temperature environment, to judge whether pipeline exists leakage or breakage.System is composed of energy accumulator 1, hydraulic push rod 2, measured pipeline 3, breakage simulation pipeline 31, heating device 4, control valve 5, control module 6, oil receiver 7, pressure sensor 8 and data acquisition module 9 etc., each component works cooperatively through specific connection and function, realizes the on-line monitoring of pipeline breakage.
[0029] Energy accumulator 1 is the core power source of the whole system, it stores a certain amount of hydraulic oil in itself, and provides stable pressure for the system by its pressure maintaining capacity, provides power for actuator.Energy accumulator 1 is connected with hydraulic push rod 2 through measured pipeline 3, forms a closed hydraulic circuit.Hydraulic push rod 2 as actuator, utilizes the pressure provided by energy accumulator 1 to drive piston movement, thereby realizes displacement change.In the movement process of hydraulic push rod 2, its displacement signal is monitored in real time and fed back to data acquisition module 9, for judging the breakage of pipeline.
[0030] Measured pipeline 3 is the pipeline for simulating actual working environment in the system, its two ends are connected with energy accumulator 1 and hydraulic push rod 2 respectively, constitutes the main channel of hydraulic circuit.In order to simulate pipeline breakage, breakage simulation pipeline 31 is connected with measured pipeline 3, and connected with oil receiver 7 through control valve 5.The performance of breakage simulation pipeline 31 is completely consistent with measured pipeline 3, when control valve 5 is opened, hydraulic oil will flow into oil receiver 7 through breakage simulation pipeline 31, thereby simulates the leakage phenomenon when pipeline breaks.
[0031] Since measured pipeline 3 is placed in low temperature laboratory, in order to ensure the normal operation of system in low temperature environment, prevent hydraulic oil and pipeline from being affected by low temperature, heating device 4 is installed on the outer wall of measured pipeline 3.Heating device 4 adopts heat tracing technology, can adaptively adjust heating power according to the change of ambient temperature, prevent hydraulic oil from solidifying due to low temperature or pipeline from embrittlement due to low temperature.Temperature control of heating device 4 is responsible by control module 6, control module 6 adjusts the power output of heating device 4 through control circuit, ensures the stable working state of measured pipeline 3 in low temperature environment.Control module 6 is placed in normal temperature environment, for easy operation.
[0032] The control valve 5 is a key component in the system for simulating pipe breakage, which adopts a low-temperature solenoid valve design and can work reliably in a low-temperature environment. The control valve 5 is connected to the control module 6 through a control circuit, and its opening and closing state is remotely controlled by the control module 6, thereby controlling the hydraulic circuit. When the control valve 5 is open, hydraulic oil flows into the oil receiver 7 through the breakage simulation pipeline 31, simulating the leakage phenomenon when the pipeline breaks; when the control valve 5 is closed, the hydraulic circuit returns to normal, and the hydraulic oil circulates between the accumulator 1 and the hydraulic push rod 2.
[0033] The oil receiver 7 is used to receive hydraulic oil flowing out of the breakage simulation pipeline 31, and is provided with a liquid level sensor inside to monitor the change in oil volume in real time. The liquid level signal of the oil receiver 7 is also collected by the data acquisition module 9 to assist in judging the severity of the pipeline breakage.
[0034] The pressure sensor 8 is installed on the measured pipeline 3 to monitor the pressure change in the pipeline in real time. The pressure sensor 8 adopts a low-temperature pressure sensor 8 design and can work stably in a low-temperature environment. When the measured pipeline 3 breaks, the pressure in the pipeline will drop rapidly, and the pressure sensor 8 can timely capture this change and transmit the pressure signal to the data acquisition module 9.
[0035] The data acquisition module 9 is the core monitoring unit of the system, which is responsible for collecting the pressure signal of the pressure sensor 8, the displacement signal of the hydraulic push rod 2, and the liquid level signal of the oil receiver 7. The data acquisition module 9 analyzes these signals through the built-in algorithm to determine whether the measured pipeline 3 has a leak or breakage. The data acquisition module 9 is installed in a normal temperature environment to ensure the normal work of its electronic components.
[0036] The test procedure is as follows: first, place the measured pipeline 3 in a low-temperature test room and lower the environmental temperature to the target value; then, connect the pipelines and cables of the system to ensure that all components are properly connected; next, turn on the data acquisition module 9 to start collecting pressure, displacement, and liquid level signals in real time; when it is necessary to simulate pipeline breakage, open the control valve 5 through the control module 6, and hydraulic oil flows into the oil receiver 7 through the breakage simulation pipeline 31, at which time the pressure sensor 8 detects a drop in the pressure in the pipeline, the displacement signal of the hydraulic push rod 2 changes, and the data acquisition module 9 determines the pipeline breakage condition according to these signals; after the test is completed, close the control valve 5, and the system returns to the initial state.
[0037] Through the above design, the system can monitor the breakage of the pipeline in real time in a low-temperature environment, providing reliable technical support for the safe operation of the pipeline.
[0038] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent features, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An online monitoring simulation system for pipeline damage in a low-temperature environment, characterized in that: The invention comprises an accumulator (1), a tested pipe (3) and a hydraulic push rod (2); the tested pipe (3) is connected to the accumulator (1) and the hydraulic push rod (2) to form a closed hydraulic circuit; a pressure sensor (8) for real-time monitoring of pressure changes in the pipe is installed on the tested pipe (3); the hydraulic push rod (2) drives the piston to move by using the pressure provided by the accumulator (1) to achieve displacement changes; the tested pipe (3) is connected to a damaged simulation pipe (31); the damaged simulation pipe (31) is connected to an oil receiver (7) through a control valve (5) to simulate leakage when the pipe is damaged; the oil receiver (7) is used to receive hydraulic oil flowing out of the damaged simulation pipe (31).
2. The online monitoring simulation system for pipeline damage in a low temperature environment according to claim 1 is characterized in that: The performance of the damaged simulated pipeline (31) is consistent with that of the tested pipeline (3).
3. The online monitoring simulation system for pipeline damage in a low temperature environment according to claim 2 is characterized in that: The data acquisition module (9) collects signals from the pressure sensor (8), the hydraulic push rod (2) and the oil receiver (7), and analyzes and determines the damage of the pipeline.
4. The online monitoring simulation system for pipeline damage in a low-temperature environment according to claim 3 is characterized in that: A liquid level sensor is provided inside the oil receiver (7) to monitor oil volume changes in real time and transmit the liquid level signal to the data acquisition module (9).
5. The online monitoring simulation system for pipeline damage in a low temperature environment according to claim 3 or 4, characterized in that: A heating device (4) is installed on the outer wall of the measured pipeline (3) to adaptively adjust the heating power according to changes in ambient temperature.
6. The online monitoring simulation system for pipeline damage in a low-temperature environment according to claim 5 is characterized in that: The temperature control of the heating device (4) is handled by a control module (6), which regulates the power output of the heating device (4) through a control circuit to ensure that the working state of the measured pipeline (3) is stable in a low-temperature environment.
7. The online monitoring simulation system for pipeline damage in a low-temperature environment according to claim 6 is characterized in that: The heating device (4) adopts a companion heater, which adaptively adjusts the heating power according to the change of the ambient temperature to prevent the hydraulic oil from solidifying due to low temperature or the pipeline from becoming brittle due to low temperature.
8. The online monitoring simulation system for pipeline damage in a low-temperature environment according to claim 6 is characterized in that: The control valve (5) is a low-temperature electromagnetic valve, which is connected to the control module (6) via a control circuit, and the opening and closing states are remotely controlled by the control module (6).
9. The online monitoring simulation system for pipeline damage in a low-temperature environment according to claim 6, characterized in that: The accumulator (1) serves as a core power source, stores hydraulic oil internally, and provides stable pressure for the system through its pressure-maintaining capability.
10. A method for using the pipeline damage online monitoring simulation system in a low temperature environment according to any one of claims 6 to 9, characterized in that: The following steps are involved: Placing the tested pipeline (3) in a low-temperature test chamber and lowering the ambient temperature to a target value; Connect the pipes and cables to ensure all components are properly connected; Turning on the data acquisition module (9) to start real-time acquisition of pressure, displacement and liquid level signals; When it is necessary to simulate pipeline damage, the control valve (5) is opened through the control module (6), and the hydraulic oil flows into the oil receiver (7) through the damaged simulated pipeline (31). The pressure sensor (8) detects a pressure drop in the pipeline, and the displacement signal of the hydraulic push rod (2) changes. The data acquisition module (9) determines the pipeline damage status based on these signals. After the test is completed, the control valve (5) is closed and the system returns to its initial state.