Pipeline loading and unloading pressure safety interlocking device

Abstract

The utility model relates to the technical field of pipeline loading and unloading, and discloses a loading and unloading pipeline pressure safety interlocking device which comprises a loading yard quantitative loading controller, and further comprises an alarm piece, a monitoring piece and an emergency stop piece which are arranged on the outer side of the loading yard quantitative loading controller. The static oil spilling device, the gas phase pressure transmitter, the liquid phase pressure transmitter, the vortex shedding flowmeter and the mass flowmeter are arranged on the outer side of the quantitative loading controller of the loading yard. According to the utility model, parameters such as pressure, temperature, flow and the like of a pipeline can be monitored in real time through the cooperative use of the quantitative loading controller of the loading yard, the alarm piece, the monitoring piece and the emergency stop piece; abnormal conditions can be found in time, and accidents such as pipeline breakage caused by abnormal pressure are avoided; when an abnormal condition is monitored, an alarm can be triggered automatically, accidents are avoided, meanwhile, equipment such as a valve and a pump of a pipeline can be controlled automatically, danger caused by the abnormal condition is prevented, and the safety of loading and unloading operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline loading and unloading technology, specifically a pressure safety interlock device for loading and unloading pipelines. Background Technology

[0002] Pipeline loading and unloading refers to the loading and unloading process during the transportation of pipelines from the production site or warehouse to the construction site or customer-designated location. This process involves multiple steps, including pipeline handling, loading, securing, and unloading.

[0003] During pipeline loading and unloading, the pressure within the pipeline fluctuates due to various factors. These pressure changes can affect the safety, efficiency, and quality of the loading and unloading operations. Currently, the inability to monitor pipeline pressure in real time during loading and unloading may prevent the timely detection of abnormal pressure conditions, such as excessively high or low pressure, increasing the risk of pipeline rupture. Furthermore, abnormal pipeline pressure can damage loading and unloading equipment, such as pumps and valves, thus disrupting the normal operation of the loading and unloading process. Utility Model Content

[0004] The purpose of this invention is to provide a pressure safety interlock device for loading and unloading pipelines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure safety interlock device for loading and unloading pipelines, including a loading yard quantitative loading controller, and further comprising:

[0006] An alarm device, a monitoring device, and an emergency stop device are installed outside the quantitative loading controller of the loading yard, and the alarm device, the monitoring device, and the emergency stop device are all connected to the signal of the quantitative loading controller of the loading yard.

[0007] An electrostatic oil overflow device, a gas phase pressure transmitter, a liquid phase pressure transmitter, a vortex flow meter, and a mass flow meter are installed outside the quantitative loading controller at the loading yard. All of these devices are connected to the signal of the quantitative loading controller at the loading yard.

[0008] Preferably, the alarm device includes a loading yard pump operating column whose signal is connected to the signal transmitter of the loading yard quantitative loading controller, the signal transmitter of the loading yard pump operating column being connected to the power distribution room pump control cabinet, and the signal transmitter of the power distribution room pump control cabinet being connected to the pump room material conveying pump.

[0009] Preferably, the alarm device further includes a loading control pneumatic valve whose signal is connected to the signal transmitter of the loading yard quantitative loading controller.

[0010] Preferably, the monitoring device includes a MOXA switch whose signal is connected to the signal transmitter of the quantitative loading controller in the loading yard, and the signal transmitter of the MOXA switch is connected to the weighbridge room loading monitoring equipment.

[0011] Preferably, the emergency stop device includes a central control room DCS system cabinet whose signal is connected to the signal transmitter of the mass flow meter, and the central control room DCS system cabinet whose signal is connected to the signal receiver of the power distribution room pump control cabinet.

[0012] Preferably, the signal receiving end of the central control room DCS system cabinet is connected to the central control room emergency stop button and the loading yard emergency stop button respectively, and the signal transmitting end of the central control room DCS system cabinet is connected to the tank root valve.

[0013] Preferably, a DCS operator station is provided on the outside of the central control room DCS system cabinet, and both the signal transmitter and signal receiver of the central control room DCS system cabinet are connected to the DCS operator station.

[0014] Preferably, a pump operation column is provided on the outside of the material conveying pump in the pump room, and the signal transmitting end of the pump operation column is connected to the signal receiving end of the pump control cabinet in the power distribution room.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model, through the combined use of a quantitative loading controller, alarm components, monitoring components, and emergency stop components at the loading yard, can monitor pipeline parameters such as pressure, temperature, and flow rate in real time, promptly detect abnormalities, and prevent accidents such as pipeline rupture caused by abnormal pressure. When an abnormality is detected, it can automatically trigger an alarm to prevent accidents from occurring. At the same time, it can also automatically control pipeline valves, pumps, and other equipment to prevent dangers caused by abnormalities and improve the safety of loading and unloading operations. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the pressure safety interlock device for loading and unloading pipelines provided by this utility model;

[0018] Figure 2 A schematic diagram of the structure of the alarm component provided by this utility model;

[0019] Figure 3 A schematic diagram of the structure of the monitoring component provided by this utility model;

[0020] Figure 4 A schematic diagram of the structure of the emergency stop component provided by this utility model;

[0021] Figure 5 A diagram of the pipeline loading instrument system provided for this utility model.

[0022] In the diagram: 1. Loading yard quantitative loading controller; 2. Alarm device; 21. Loading yard pump operating column; 22. Power distribution room pump control cabinet; 23. Pump room material conveying pump; 24. Loading control pneumatic valve; 3. Monitoring device; 31. MOXA switch; 32. Weighbridge loading monitoring equipment; 4. Emergency stop device; 41. Central control room DCS system cabinet; 42. Central control room emergency stop button; 43. Loading yard emergency stop button; 44. Tank root valve; 5. Electrostatic oil overflow device; 6. Gas phase pressure transmitter; 7. Liquid phase pressure transmitter; 8. Vortex flow meter; 9. Mass flow meter; 10. DCS operator station; 11. Pump room pump operating column. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 As shown, a pressure safety interlock device for loading and unloading pipelines includes a loading yard quantitative loading controller 1. The loading yard quantitative loading controller 1 is an automated device for accurately controlling the pipeline loading quantity. It adopts high-precision sensors and metering algorithms to ensure the accuracy of the loading quantity. It also includes an alarm component 2, a monitoring component 3, and an emergency stop component 4 installed outside the loading yard quantitative loading controller 1. The alarm component 2, monitoring component 3, and emergency stop component 4 are all connected to the loading yard quantitative loading controller 1. The alarm component 2 is used to set an alarm delay value. If the alarm value is reached, the conveying pump and valve can be automatically shut down. The monitoring component 3 is used to monitor the loading status and real-time loading quantity at the weighbridge. The emergency stop component 4 can shut down the conveying pump and valve in case of an emergency.

[0025] The electrostatic oil overflow device 5, gas phase pressure transmitter 6, liquid phase pressure transmitter 7, vortex flow meter 8, and mass flow meter 9, all located outside the quantitative loading controller 1 in the loading yard, are connected to the signal of the quantitative loading controller 1. The electrostatic oil overflow device 5 is used to prevent accidents caused by static electricity and avoid oil spills during loading, thus improving the safety of pipeline loading. The core component of the gas phase pressure transmitter 6 is a pressure sensor, typically employing piezoresistive, capacitive, or strain gauge principles. It converts the gas pressure parameters sensed by the pressure sensor into a standard electrical signal, used to connect the transmitter to the measured medium. To ensure the accuracy and reliability of the measurement, the liquid pressure transmitter 7 converts the liquid pressure parameters sensed by the pressure sensor into a standard electrical signal, connecting the transmitter to the measured medium. When the fluid flows through the vortex generator in the vortex flowmeter 8, two rows of regular vortices are alternately generated on both sides of the vortex generator. These vortices are called Karman vortices. The frequency of the vortex is proportional to the fluid velocity. Therefore, the flow velocity can be determined by measuring the vortex frequency, and then the flow rate can be calculated. The mass flowmeter 9 uses the Coriolis effect to measure the mass flow rate of the fluid. When the fluid passes through the vibrating measuring tube, a Coriolis force proportional to the fluid mass flow rate is generated. By detecting the change in this force, the mass flow rate of the fluid can be calculated.

[0026] Alarm component 2 includes a loading yard pump operating column 21 whose signal is connected to the signal transmitter of the loading yard quantitative loading controller 1. The signal transmitter of the loading yard pump operating column 21 is connected to the power distribution room pump control cabinet 22, and the signal transmitter of the power distribution room pump control cabinet 22 is connected to the pump room material conveying pump 23. Alarm component 2 also includes a loading control pneumatic valve 24 whose signal is connected to the signal transmitter of the loading yard quantitative loading controller 1. The loading yard pump operating column 21 can control and operate the pump room material conveying pump 23 through the power distribution room pump control cabinet 22. The loading control pneumatic valve 24 is a valve used to control and regulate the fluid flow during the loading process, which can achieve precise control of the fluid and ensure the safety and efficiency of the loading process.

[0027] The monitoring device 3 includes a MOXA switch 31 whose signal is connected to the signal transmitter of the quantitative loading controller 1 in the loading yard. The signal transmitter of the MOXA switch 31 is connected to the weighbridge loading monitoring device 32. The switch is an Ethernet switch specifically designed and manufactured for industrial automation. It has the characteristics of high reliability, strong adaptability, good stability, easy management, and rich scalability. The weighbridge loading monitoring device 32 is used to monitor the loading situation in the weighbridge.

[0028] The emergency stop component 4 includes a central control room DCS system cabinet 41 with a signal connection to the signal transmitter of the mass flow meter 9. The central control room DCS system cabinet 41 has a signal connection to the signal receiver of the pump control cabinet 22 in the power distribution room. The signal receiver of the central control room DCS system cabinet 41 is connected to both the central control room emergency stop button 42 and the loading yard emergency stop button 43. The signal transmitter of the central control room DCS system cabinet 41 is connected to the tank root valve 44. DCS is an important component of modern industrial automation and is widely used in industries such as petroleum, chemical, power, and metallurgy. The central control room DCS system cabinet 41... It is an important component of the DCS system, used to install and protect the control equipment and modules of the DCS system. The emergency stop button 42 in the central control room and the emergency stop button 43 in the loading yard are important safety devices in the automated control system. They are used to quickly cut off the power or stop the operation of the equipment in an emergency to prevent accidents or mitigate the consequences of accidents. They are used to stop the DCS system cabinet 41 in the central control room in an emergency. The tank root valve 44 is used to achieve physical isolation between the tank equipment body and the connecting pipeline. This isolation is generally an active isolation carried out for maintenance or other purposes in non-sudden accident conditions.

[0029] A DCS operator station 10 is installed on the outside of the DCS system cabinet 41 in the central control room. The signal transmitter and signal receiver of the DCS system cabinet 41 in the central control room are both connected to the DCS operator station 10. A pump room pump operation column 11 is installed on the outside of the material conveying pump 23 in the pump room. The signal transmitter of the pump room pump operation column 11 is connected to the signal receiver of the pump control cabinet 22 in the power distribution room. The DCS operator station 10 is the human-machine interface in the DCS system, used by operators to monitor and control the production process. The pump room pump operation column 11 can realize remote control of the pump equipment. Operators can start, stop, adjust and other operations through the buttons or touch screen on the operation column.

[0030] Working principle: First, the loading yard instruments monitor the loading data and transmit the signal to the loading yard quantitative loading controller 1. The controller is set with an alarm delay value. If the alarm value is reached, the material conveying pump 23 in the pump room will be automatically stopped and the loading control pneumatic valve 24 will be closed. Second, the weighbridge is equipped with loading monitoring software, which can monitor the loading status and real-time loading quantity. Third, in case of emergency, the material conveying pump 23 in the pump room and the tank root valve 44 can be shut down through the emergency stop button 42 in the central control room and the emergency stop button 43 in the loading yard.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A loading and unloading pipeline pressure safety interlock comprising a loading site batch loading controller (1), characterized in that, Also include: The alarm (2), monitoring device (3) and emergency stop (4) are set outside the loading field quantitative loading controller (1), and the alarm (2), monitoring device (3) and emergency stop (4) are all connected with the signal of the loading field quantitative loading controller (1); The static overflow oil device (5), gas phase pressure transmitter (6), liquid phase pressure transmitter (7), vortex flowmeter (8) and mass flowmeter (9) are set outside the loading field quantitative loading controller (1), and the static overflow oil device (5), gas phase pressure transmitter (6), liquid phase pressure transmitter (7), vortex flowmeter (8) and mass flowmeter (9) are all connected with the signal of the loading field quantitative loading controller (1).

2. A pipe handling pressure safety interlock according to claim 1, wherein: The alarm (2) includes a loading field pump operating column (21) connected with the signal emission end of the loading field quantitative loading controller (1), and the signal emission end of the loading field pump operating column (21) is connected with a power distribution room pump control cabinet (22), and the signal emission end of the power distribution room pump control cabinet (22) is connected with a pump house material conveying pump (23).

3. A pipe handling pressure safety interlock according to claim 1, wherein: The alarm (2) also includes a loading control pneumatic valve (24) connected with the signal emission end of the loading field quantitative loading controller (1).

4. A pipe handling pressure safety interlock according to claim 1, wherein: The monitoring device (3) includes a MOXA switch (31) connected with the signal emission end of the loading field quantitative loading controller (1), and the signal emission end of the MOXA switch (31) is connected with a loading monitoring equipment (32) in the weighbridge room.

5. A pipe handling pressure safety interlock according to claim 1, wherein: The emergency stop (4) includes a central control room DCS system cabinet (41) connected with the signal emission end of the mass flowmeter (9), and the central control room DCS system cabinet (41) is connected with the signal receiving end of the power distribution room pump control cabinet (22).

6. A pipe handling pressure safety interlock according to claim 5, wherein: The signal receiving end of the central control room DCS system cabinet (41) is respectively connected with a central control room emergency stop button (42) and a loading field emergency stop button (43), and the signal emission end of the central control room DCS system cabinet (41) is connected with a tank root valve (44).

7. A pipe handling pressure safety interlock according to claim 5, wherein: The outside of the central control room DCS system cabinet (41) is provided with a DCS operator station (10), and the signal emission end and the signal receiving end of the central control room DCS system cabinet (41) are connected with the DCS operator station (10).

8. A pipe handling pressure safety interlock according to claim 2, wherein: The outside of the pump house material conveying pump (23) is provided with a pump house pump operating column (11), and the signal emission end of the pump house pump operating column (11) is connected with the signal receiving end of the power distribution room pump control cabinet (22).

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