A water hammer advance protection system for an oil pipeline

Abstract

The present application relates to a kind of oil pipeline water hammer advance protection system, and it is related to the automatic technical field of oil pipeline.The above-mentioned system includes: dispatching device, station control device, valve chamber control device and data acquisition device, data acquisition device is used to obtain the operating data of pipeline, and sends operating data to station control device or valve chamber control device, and station control device or valve chamber control device is used to send alarm information to dispatching device according to operating data;Dispatching device is used to respond to alarm information, and sends water hammer protection instruction to the corresponding station control device or valve chamber control device of the upstream and downstream oil delivery station of target oil delivery station;Station control device or valve chamber control device is also used to respond to received water hammer protection instruction, and executes pump operation.The system provided by the present application can send water hammer protection instruction to control device by dispatching device, and realize the water hammer advance protection of pipeline.

Description

A water hammer prevention system for oil pipelines Technical Field

[0001] This invention relates to the field of automation technology for oil pipelines, and in particular to a water hammer prevention system for oil pipelines. Background Technology

[0002] Water hammer is a phenomenon where a sudden change in liquid flow velocity in a pressurized pipeline causes a large fluctuation in pressure. Rapid opening and closing of gate valves in a pipeline system, or sudden shutdown of an oil pump, can all cause water hammer. When water hammer occurs, the common method is to stop the pump in advance to prevent it, thereby protecting the entire pipeline and equipment—this is known as water hammer preemptive protection. For example, when a pump suddenly stops at a station or a main line valve suddenly closes, the water hammer preemptive protection system automatically sends a pump stop command electrical signal to the upstream and downstream stations of the oil station where the water hammer occurred. Since the propagation speed of the electrical signal is much greater than the propagation speed of the water hammer wave, the water hammer preemptive protection system can issue the pump stop command before the water hammer wave reaches the upstream and downstream stations, generating a pressure-reducing wave to eliminate the water hammer pressure-increasing wave generated at the station where the water hammer occurred, thus achieving the purpose of protecting the pipeline and equipment.

[0003] In related technologies, water hammer prevention is typically implemented using a programmable logic controller (PLC) pre-configured within the pipeline. However, without a PLC pre-configured during pipeline construction, water hammer prevention cannot be achieved, posing challenges to the deployment of industrial control systems for newly transferred long-distance oil and gas pipelines. Summary of the Invention

[0004] This invention provides a water hammer prevention system for oil pipelines, which can receive alarm information from station control devices or valve chamber control devices through a dispatching device, send water hammer protection commands to the control device, realize water hammer prevention protection for pipelines, and enable rapid deployment of industrial control systems for long-distance oil and gas pipelines.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0006] In a first aspect, the present invention provides a water hammer prevention system for oil pipelines. The system includes: a dispatching device, a station control device, a valve chamber control device, and a data acquisition device. The dispatching device communicates with both the station control device and the valve chamber control device, and the data acquisition device communicates with both the station control device and the valve chamber control device. The data acquisition device acquires pipeline operating data and transmits the operating data to the station control device or the valve chamber control device. The operating data includes pipeline temperature, pipeline pressure, pipeline flow rate, or pipeline velocity at each of the multiple oil stations in the pipeline. The station control device... The valve chamber control device is used to receive operating data and determine whether there is a target oil pumping station among multiple oil pumping stations that has experienced a water hammer accident. If there is a target oil pumping station among multiple oil pumping stations that has experienced a water hammer accident, it sends an alarm message to the dispatching device, which carries the location information of the target oil pumping station. In response to the alarm message, the dispatching device sends a water hammer protection command to the station control device or valve chamber control device corresponding to the upstream and downstream oil pumping stations of the target oil pumping station. The station control device or valve chamber control device is also used to execute a pump stop operation in response to the received water hammer protection command.

[0007] In one possible implementation of the first aspect, the scheduling device is also used to display alarm information in response to alarm information.

[0008] In one possible implementation of the first aspect, the system further includes a network communication device, which is used to realize data interaction between the dispatching device, the station control device, the valve chamber control device, and the data acquisition device.

[0009] In one possible implementation of the first aspect, the data acquisition device includes one or more of a measuring instrument, a sensor, or a compressor unit.

[0010] In one possible implementation of the first aspect, the station control device is equipped with a programmable logic controller (PLC), and the valve chamber control device is equipped with a remote terminal unit (RTU).

[0011] The programmable logic controller (PLC) or remote terminal unit (RTU) is used to determine whether there is a target oil pumping station with a water hammer accident among multiple oil pumping stations based on operating data; if there is a target oil pumping station with a water hammer accident among multiple oil pumping stations, it sends an alarm message to the dispatching device.

[0012] In one possible implementation of the first aspect, before sending the operating data, the data acquisition device is further used to preprocess the acquired data to obtain the pipeline's operating data. The preprocessing includes one or more of the following operations: filtering, splitting, reorganizing, and early confirmation of the operating data.

[0013] In one possible implementation of the first aspect, the operational data also includes the pipeline usage status of each oil transfer station, which includes whether the pipeline is in use or not. The programmable logic controller (PLC) or remote terminal unit (RTU) is specifically used to determine, based on the operational data, the oil transfer stations whose pipeline usage status is "in use" from among multiple oil transfer stations, and to determine whether there is a target oil transfer station among the oil transfer stations in use that has experienced a water hammer accident. If there is a target oil transfer station among the multiple oil transfer stations that has experienced a water hammer accident, an alarm message is sent to the dispatching device.

[0014] In one possible implementation of the first aspect, the data acquisition device communicates with the scheduling device; the data acquisition device is also used to send operating data to the scheduling device; the scheduling device is also used to receive the operating data and determine, based on the operating data, whether there is a target oil pumping station among the multiple oil pumping stations where a water hammer accident has occurred; if there is a target oil pumping station among the multiple oil pumping stations where a water hammer accident has occurred, a water hammer protection command is sent to the station control device or valve chamber control device corresponding to the upstream and downstream oil pumping stations of the target oil pumping station.

[0015] The beneficial effects of the present invention are: the water hammer prevention system for oil pipelines provided by the present invention can receive alarm information sent by the station control device or valve chamber control device through the dispatching device, send water hammer protection command to the control device, realize water hammer prevention protection for pipelines, and realize rapid deployment of industrial control systems for long-distance oil and gas pipelines. Attached Figure Description

[0016] Figure 1 is a system architecture diagram of an oil pipeline water hammer advance protection system according to an embodiment of the present invention;

[0017] Figure 2 is a system architecture diagram of another oil pipeline water hammer advance protection system shown in an embodiment of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be described below with reference to the accompanying drawings. In the description of the embodiments of the present invention, unless otherwise stated, "multiple" refers to two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0019] Furthermore, to facilitate a clear description of the technical solutions in the embodiments of the present invention, the terms "first" and "second" are used to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that "first" and "second" are not necessarily different. Meanwhile, in the embodiments of the present invention, the terms "exemplary" or "for example" are used to indicate that something is being used as an example, illustration, or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present invention should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner for ease of understanding.

[0020] Water hammer is a phenomenon where a sudden change in liquid flow velocity in a pressurized pipeline causes a large fluctuation in pressure. Rapid opening and closing of gate valves in a pipeline system, or sudden shutdown of an oil pump, can all cause water hammer. When water hammer occurs, the common method is to stop the pump in advance to prevent it, thereby protecting the entire pipeline and equipment—this is known as water hammer preemptive protection. For example, when a pump suddenly stops at a station or a main line valve suddenly closes, the water hammer preemptive protection system automatically sends a pump stop command electrical signal to the upstream and downstream stations of the oil station where the water hammer occurred. Since the propagation speed of the electrical signal is much greater than the propagation speed of the water hammer wave, the water hammer preemptive protection system can issue the pump stop command before the water hammer wave reaches the upstream and downstream stations, generating a pressure-reducing wave to eliminate the water hammer pressure-increasing wave generated at the station where the water hammer occurred, thus achieving the purpose of protecting the pipeline and equipment.

[0021] In related technologies, water hammer protection is typically implemented by a programmable logic controller (PLC) pre-configured in the pipeline. However, without a PLC pre-configured during pipeline construction, water hammer protection cannot be implemented, thus creating difficulties in deploying the industrial control system for newly transferred long-distance oil and gas pipelines.

[0022] In view of this, embodiments of the present invention provide a water hammer prevention system for oil pipelines. The system includes: a dispatching device, a station control device, a valve chamber control device, and a data acquisition device. The dispatching device communicates with both the station control device and the valve chamber control device, and the data acquisition device communicates with both the station control device and the valve chamber control device. The data acquisition device acquires pipeline operating data and sends the operating data to the station control device or the valve chamber control device. The operating data includes the pipeline temperature, pipeline pressure, pipeline flow rate, or pipeline velocity at each of the multiple oil stations in the pipeline. The station control device... The station or valve chamber control device is used to receive operating data and determine whether there is a target oil pumping station among multiple oil pumping stations that has experienced a water hammer accident. If there is a target oil pumping station among multiple oil pumping stations that has experienced a water hammer accident, it sends an alarm message to the dispatching device, which carries the location information of the target oil pumping station. The dispatching device is also used to respond to the alarm message and send a water hammer protection command to the station control device or valve chamber control device corresponding to the upstream and downstream oil pumping stations of the target oil pumping station. The station control device or valve chamber control device is also used to respond to the received water hammer protection command and execute a pump shutdown operation.

[0023] The water hammer prevention system for oil pipelines provided by this invention can receive alarm information sent by station control devices or valve chamber control devices through a dispatching device, send water hammer protection commands to the control device, realize water hammer prevention protection for pipelines, and enable rapid deployment of industrial control systems for long-distance oil and gas pipelines.

[0024] Figure 1 is a system architecture diagram of a water hammer advance protection system for oil pipelines according to an embodiment of the present invention. As shown in Figure 1, the water hammer advance protection system 100 for oil pipelines includes: a dispatching device 110, a station control device 120, a valve chamber control device 130, and a data acquisition device 140. The dispatching device 110 communicates with the station control device 120 and the valve chamber control device 130 respectively, and the data acquisition device 140 communicates with the station control device 120 and the valve chamber control device 130 respectively.

[0025] The data acquisition device 140 is used to acquire pipeline operation data and send the operation data to the station control device 120 or the valve chamber control device 130. The operation data includes the pipeline temperature, pipeline pressure, pipeline flow rate or pipeline velocity of each of the multiple oil transfer stations in the pipeline.

[0026] Specifically, the data acquisition device 140 includes one or more of measuring instruments, sensors, or compressor units. The data acquisition device 140 is used to acquire the temperature, pressure, flow rate, and velocity of the pipeline medium at each of multiple oil transportation stations based on equipment such as measuring instruments, sensors, or compressor units.

[0027] It should be understood that the data acquired by the data acquisition device 140 is only an example. The data acquisition device 140 can also acquire other data, such as the power supply status of each oil pumping station and whether the pipeline of each oil pumping station is in use. It should be noted that the operating data may also include other types or categories of data, and this application embodiment does not impose any special restrictions on this.

[0028] However, because the data acquired by the data acquisition device 140 comes from multiple different devices, including some invalid information, the data input volume of the station control device 120 and valve chamber control device 130 is large, resulting in high communication pressure between the station control device 120, valve chamber control device 130, and data acquisition device 140. Furthermore, the large volume of operational data leads to long processing times and low processing efficiency for the station control device 120 and valve chamber control device 130.

[0029] To address the aforementioned issues, in one possible implementation, before sending operational data, the data acquisition device 140 further preprocesses the acquired data to obtain pipeline operational data. The preprocessing includes one or more of the following operations: filtering, splitting, recombining, and early confirmation of the operational data.

[0030] In this way, by preprocessing the acquired data through the data acquisition device 140, invalid data can be effectively deleted, reducing the amount of operational data. This, in turn, reduces the data input to the station control device 120 and the valve chamber control device 130, thereby reducing the communication burden between the station control device 120, the valve chamber control device 130, and the data acquisition device 140. Furthermore, it effectively reduces processing time and improves processing efficiency.

[0031] The station control device 120 or valve chamber control device 130 is used to receive operating data and determine whether there is a target oil pumping station with a water hammer accident among multiple oil pumping stations based on the operating data; if there is a target oil pumping station with a water hammer accident among multiple oil pumping stations, an alarm message is sent to the dispatching device 110, and the alarm message carries the location information of the target oil pumping station.

[0032] Specifically, each station control device 120 or each valve chamber control device 130 corresponds to a different oil pumping station and is used to control the corresponding oil pumping station to perform pump shutdown operations.

[0033] In some embodiments, the station control device 120 is equipped with a programmable logic controller (PLC), and the valve chamber control device 130 is equipped with a remote terminal unit (RTU). The PLC or RTU is used to determine, based on the operating data, whether there is a target oil pumping station among the multiple oil pumping stations where a water hammer accident has occurred; if there is a target oil pumping station among the multiple oil pumping stations where a water hammer accident has occurred, an alarm message is sent to the dispatching device 110.

[0034] Specifically, an RTU can be understood as a specialized computer measurement and control unit with a modular structure designed for long communication distances and harsh industrial environments. In other words, an RTU is an electronic device that can adapt to harsh environments and perform the same functions as a PLC.

[0035] The dispatching device 110 is used to send a water hammer protection command to the station control device 120 or valve chamber control device 130 corresponding to the upstream and downstream oil pumping stations in response to the alarm information; the station control device 120 or valve chamber control device 130 is also used to execute a pump stop operation in response to the received water hammer protection command, so as to realize the early protection of pipeline from water hammer.

[0036] Specifically, the dispatching device 110 is equipped with a water hammer module, which is configured with a preset algorithm. The preset algorithm is used to send a water hammer protection command to the station control device 120 or valve chamber control device 130 corresponding to the upstream and downstream oil pumping stations of the target oil pumping station in response to the alarm information. The station control device 120 or valve chamber control device 130 is also used to execute a pump stop operation in response to the received water hammer protection command, so as to realize the early protection of the pipeline from water hammer.

[0037] Furthermore, the dispatching device 110 is also used to display alarm information in response to alarm information.

[0038] In this way, the dispatching device 110 can respond to alarm information by displaying alarm information, prompting operators to handle the alarm information in a timely manner and avoid unnecessary losses.

[0039] Optionally, the system also includes a network communication device, which is used to realize data interaction between the dispatching device 110, the station control device 120, the valve chamber control device 130 and the data acquisition device 140.

[0040] Specifically, the network communication device can be a switch, router, etc. The dispatching device 110, station control device 120, valve chamber control device 130 and data acquisition device 140 can also communicate via wireless network or wired network. The embodiments of the present invention do not impose any special restrictions on the specific implementation of the network communication device.

[0041] In some embodiments, the operating data also includes the pipeline commissioning status of each oil station, which includes whether the pipeline is in use or not. The programmable logic controller (PLC) or remote terminal unit (RTU) is specifically used to determine the oil stations whose pipeline commissioning status is "in use" based on the operating data, and to determine whether there is a target oil station among the oil stations in use that has experienced a water hammer accident. If there is a target oil station among multiple oil stations that has experienced a water hammer accident, an alarm message is sent to the dispatching device 110.

[0042] As can be seen from the above, by using a programmable logic controller (PLC) or a remote terminal unit (RTU) to determine whether an oil pumping station is in operation, the processing logic can be optimized, thereby effectively reducing processing time and improving processing efficiency.

[0043] In one possible implementation, referring to Figure 2, the data acquisition device 140 communicates with the dispatching device 110. The data acquisition device 140 is also used to send operational data to the dispatching device 110; the dispatching device 110 is also used to receive operational data, determine whether there is a target oil pumping station among the multiple oil pumping stations where a water hammer accident has occurred, and if there is a target oil pumping station among the multiple oil pumping stations where a water hammer accident has occurred, send a water hammer protection command to the station control device 120 or valve chamber control device 130 corresponding to the upstream and downstream oil pumping stations of the target oil pumping station.

[0044] As described above, the data acquisition device 140 directly sends operational data to the dispatching device. The dispatching device then determines the target oil station experiencing a water hammer accident based on the operational data and sends water hammer protection commands to the corresponding station control devices or valve chamber control devices of the upstream and downstream oil stations of the target oil station. This enables early protection against water hammer in pipelines even when the station control device 120 and valve chamber control device 130 are unable to send alarm information to the dispatching device due to poor communication conditions.

[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A water hammer prevention system for oil pipelines, characterized in that, The system includes: a dispatching device, a station control device, a valve chamber control device, and a data acquisition device. The dispatching device communicates with both the station control device and the valve chamber control device, and the data acquisition device communicates with both the station control device and the valve chamber control device. The data acquisition device acquires pipeline operating data and sends it to the station control device or the valve chamber control device. The operating data includes pipeline temperature, pipeline pressure, pipeline flow rate, or pipeline velocity for each of the multiple oil transfer stations in the pipeline. The station control device or the valve chamber control device receives the operating data and determines whether a target oil transfer station experiencing a water hammer accident exists based on the operating data. If a target oil transfer station experiencing a water hammer accident exists, an alarm message is sent to the dispatching device. The alarm information carries the location information of the target oil pumping station; the dispatching device is used to respond to the alarm information by sending a water hammer protection command to the station control device or valve chamber control device corresponding to the upstream and downstream oil pumping stations of the target oil pumping station; the station control device or valve chamber control device is also used to execute a pump stop operation in response to the received water hammer protection command; the data acquisition device communicates with the dispatching device; the data acquisition device is also used to send the operating data to the dispatching device; the dispatching device is also used to receive the operating data and determine whether there is a target oil pumping station with a water hammer accident among the multiple oil pumping stations; if there is a target oil pumping station with a water hammer accident among the multiple oil pumping stations, it sends a water hammer protection command to the station control device or valve chamber control device corresponding to the upstream and downstream oil pumping stations of the target oil pumping station.

2. The system according to claim 1, characterized in that, The scheduling device is also used to display the alarm information in response to the alarm information.

3. The system according to claim 2, characterized in that, The system also includes a network communication device, which is used to realize data interaction between the scheduling device, the station control device, the valve chamber control device and the data acquisition device.

4. The system according to claim 3, characterized in that, The data acquisition device includes one or more of the following: measuring instruments, sensors, or compressor units.

5. The system according to claim 4, characterized in that, The station control device is equipped with a programmable logic controller (PLC), and the valve chamber control device is equipped with a remote terminal unit (RTU). The PLC or the RTU is used to determine, based on the operating data, whether there is a target oil pumping station among the multiple oil pumping stations that has experienced a water hammer accident. If a target oil pumping station experiences a water hammer accident among the multiple oil pumping stations, an alarm message is sent to the dispatching device.

6. The system according to claim 5, characterized in that, Before sending the operating data, the data acquisition device is also used to preprocess the acquired data to obtain the pipeline's operating data. The preprocessing includes one or more of the following operations: filtering, splitting, reorganizing, and early confirmation of the operating data.

7. The system according to claim 6, characterized in that, The operational data also includes the pipeline usage status of each oil transfer station, which includes whether the pipeline is in use or not. The programmable logic controller (PLC) or the remote terminal unit (RTU) is specifically used to determine the oil transfer stations with the pipeline usage status of "in use" from the plurality of oil transfer stations based on the operational data, and to determine whether there is a target oil transfer station among the oil transfer stations that has experienced a water hammer accident. If a target oil pumping station experiences a water hammer accident among the multiple oil pumping stations, an alarm message is sent to the dispatching device.

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