Remaining life evaluation system based on direction control valve

Abstract

The invention relates to a residual life evaluation system based on a direction control valve. The residual life evaluation system comprises an acquisition module for acquiring change condition data of the direction control valve through a sensor; the data processing module is used for performing data processing based on the change condition data of the direction control valve acquired by the data acquisition module so as to extract characteristic parameters of the direction control valve; the service life evaluation module is used for predicting the residual service life of the direction control valve based on a pre-established safety threshold value and a relation model; and when the performance parameters of the direction control valve exceed the safety threshold value, the system automatically gives out early warning. Through the sensor installed at the key position of the direction control valve, the system can monitor parameters such as pressure, flow and valve element displacement in real time. Therefore, an operator can know the operation state of the control valve at any time and find potential abnormal conditions in time.

Description

Technical Field

[0001] The invention relates to a control valve life assessment system, in particular to a remaining life assessment system based on a directional control valve. Background Art

[0002] In modern offshore oil production, the A-type directional control valve in the underwater Christmas tree plays a vital role. This equipment manages fluid flow through precise directional control, and its reliability and performance directly affect the normal operation of the entire oil field. However, due to the particularity and complexity of the underwater environment, the maintenance and life assessment of these control valves face many challenges. The directional control valve adopts a two-stage control design. The hydraulic control main valve stage uses a DN3 cut-off structure with a flow rate of about 10L / min. The main valve is equipped with a reset spring, which can achieve reliable reset when the electromagnets on both sides lose power at the same time. The pilot valve adopts a balanced structure to avoid the problem of insufficient driving force of the electromagnet caused by high pressure. The flow rate is 1L / min. The main valve connects the outlet pressure to the right end control side, and works with the pilot valve by pushing the oil cylinder to ensure the accurate movement of the main valve core.

[0003] Although this design improves the reliability of the equipment, wear and aging problems are inevitable during long-term use. For example, the seals of the main valve and pilot valve will gradually fail under the corrosion of seawater and high pressure difference, and the push cylinder and its related components will also wear due to long-term force. In addition, the performance of the electromagnet may decline due to aging of the insulation material or wear of the mechanical parts, affecting the response speed and reliability of the overall system. Summary of the invention

[0004] The present invention aims to provide a remaining life assessment system based on a directional control valve. Based on the monitoring and analysis of key parameters of the control valve, the remaining service life of the control valve can be accurately assessed, which enables maintenance personnel to formulate reasonable maintenance plans based on actual conditions, avoid excessive maintenance or unnecessary replacement, and thus reduce maintenance costs.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A remaining life assessment system based on a directional control valve includes an acquisition module, a data processing module, a life assessment module, and an early warning module.

[0007] Acquisition module: collects the change data of the directional control valve through sensors;

[0008] Data processing module: performing data processing based on the change data of the directional control valve collected by the data acquisition module to extract characteristic parameters of the directional control valve;

[0009] Life Assessment Module: Predicts the remaining life of the directional control valve based on pre-established safety thresholds and relationship models;

[0010] Early warning module: When the performance parameters of the directional control valve exceed the safety threshold, the system automatically issues an early warning.

[0011] Furthermore, the data acquisition module installs sensors at key positions of the directional control valve, including pressure sensors, flow sensors and displacement sensors. The pressure sensors are respectively installed at the inlet, outlet and control side of the main valve to monitor pressure changes at different positions. The flow sensors are installed at the inlet and outlet of the main valve to measure the flow of the main valve. The displacement sensors are installed on the spool of the main valve to monitor the displacement of the spool and collect changes in the directional control valve in real time, including pressure changes, flow changes and position changes, and the collected changes in the directional control valve are transmitted to the data processing module.

[0012] Furthermore, the data processing module pre-processes the collected sensor data, analyzes changes in the directional control valve, extracts characteristic parameters of the changes, and predicts performance changes in the directional control valve based on the sensor data and the characteristic parameters.

[0013] Furthermore, the life assessment module establishes a relationship model between the remaining life and the usage time and change data based on the usage time and change data of the directional control valve, establishes a safety threshold in advance based on the historical data and the safety expectation of the remaining life of the directional control valve, and predicts the remaining life of the directional control valve based on the safety threshold and the relationship model.

[0014] Furthermore, when the remaining life of the directional control valve exceeds the normal range or is lower than the safety threshold, the early warning module indicates that the corresponding directional control valve has certain operating risks, and the equipment corresponding to the operating risk is marked as risky equipment, and an early warning is issued.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Through sensors installed at key positions of the directional control valve, the system can monitor parameters such as pressure, flow and valve core displacement in real time. This allows operators to understand the operating status of the control valve at any time and discover potential abnormalities in a timely manner. When the system detects that the performance parameters of the control valve are beyond the normal range or the remaining life is lower than the preset threshold, it will issue a warning or alarm signal, which provides operators with enough time to take preventive measures, thereby reducing the safety risks caused by control valve failure. Life assessment is based on the monitoring and analysis of key parameters of the control valve, and can accurately assess the remaining service life of the control valve, which allows maintenance personnel to formulate reasonable maintenance plans based on actual conditions, avoid excessive maintenance or unnecessary replacement, and thus reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The flowchart of the remaining life evaluation system based on the directional control valve of the present invention;

[0018] Figure 2 It is a block diagram of the remaining life assessment system based on the directional control valve of the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0021] like Figure 1 As shown in Figure 2, a remaining life assessment system based on a directional control valve of the present invention includes a data acquisition module, a data processing module, a life assessment module and an early warning module.

[0022] Data acquisition module: collects the change data of the directional control valve through sensors;

[0023] Data processing module: performing data processing based on the change data of the directional control valve collected by the data acquisition module to extract characteristic parameters of the directional control valve;

[0024] Life Assessment Module: Predicts the remaining life of the directional control valve based on pre-established safety thresholds and relationship models;

[0025] Early warning module: When the performance parameters of the directional control valve exceed the safety threshold, the system automatically issues an early warning.

[0026] Preferably, the data acquisition module: installs sensors at key positions of the directional control valve, including pressure sensors, flow sensors and displacement sensors. It should be noted that the pressure sensors are respectively installed at the inlet, outlet and control side of the main valve to monitor the pressure changes at different positions. The flow sensor is installed at the inlet and outlet of the main valve to measure the flow of the main valve. The displacement sensor is installed on the valve core of the main valve to monitor the displacement of the valve core and collect the changes of the directional control valve in real time, including pressure changes, flow changes and position changes, and transmits the collected changes of the directional control valve to the data processing module.

[0027] Preferably, the data processing module: pre-processes the collected sensor data, analyzes the changes of the directional control valve, extracts characteristic parameters of the changes, and predicts the performance changes of the directional control valve based on the sensor data and the characteristic parameters;

[0028] Preferably, the life assessment module: establishes a relationship model between the remaining life and the use time and change data based on the use time and change data of the directional control valve, establishes a safety threshold in advance based on the historical data and the safety expectation of the remaining life of the directional control valve, and predicts the remaining life of the directional control valve based on the safety threshold and the relationship model;

[0029] Preferably, the early warning module: when the remaining life of the directional control valve exceeds the normal range or the remaining life is lower than the safety threshold, it indicates that the corresponding directional control valve has a certain operation risk, and the equipment corresponding to the operation risk is marked as a risky equipment, and an early warning is issued;

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A remaining life assessment system based on a directional control valve, characterized in that: Including acquisition module, data processing module, life assessment module, early warning module, Data acquisition module: collects the change data of the directional control valve through sensors; Data processing module: performing data processing based on the change data of the directional control valve collected by the data acquisition module to extract characteristic parameters of the directional control valve; Life Assessment Module: Predicts the remaining life of the directional control valve based on pre-established safety thresholds and relationship models; Early warning module: When the performance parameters of the directional control valve exceed the safety threshold, the system automatically issues an early warning.

2. The remaining life assessment system based on the directional control valve according to claim 1 is characterized in that: The data acquisition module installs sensors at key positions of the directional control valve, including pressure sensors, flow sensors and displacement sensors. The pressure sensors are respectively installed at the inlet, outlet and control side of the main valve to monitor pressure changes at different positions. The flow sensors are installed at the inlet and outlet of the main valve to measure the flow of the main valve. The displacement sensors are installed on the spool of the main valve to monitor the displacement of the spool and collect the changes of the directional control valve in real time, including pressure changes, flow changes and position changes, and transmit the collected changes of the directional control valve to the data processing module.

3. The remaining life assessment system based on the directional control valve according to claim 1, characterized in that: The data processing module pre-processes the collected sensor data, analyzes the changes of the directional control valve, extracts the characteristic parameters of the changes, and predicts the performance changes of the directional control valve based on the sensor data and the characteristic parameters.

4. The remaining life assessment system based on a directional control valve according to claim 1, characterized in that: The life assessment module establishes a relationship model between the remaining life and the usage time and change data based on the usage time and change data of the directional control valve, establishes a safety threshold in advance based on the historical data and the safety expectation of the remaining life of the directional control valve, and predicts the remaining life of the directional control valve based on the safety threshold and the relationship model.

5. The remaining life assessment system based on the directional control valve according to claim 1, characterized in that: When the remaining life of the directional control valve exceeds the normal range or the remaining life is lower than the safety threshold, it means that the corresponding directional control valve has a certain operation risk. The equipment corresponding to the operation risk is marked as risky equipment and an early warning is issued.

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