Intelligent control system applied to ethylene unloading

Abstract

The intelligent control system comprises an ethylene tank car, an unloading pipeline and a master controller, the ethylene tank car is connected with the master controller through a car electrostatic clamp, the unloading pipeline comprises a main pipe pass, one end of the main pipe pass is connected with the ethylene tank car through a gas phase pipe orifice flange, and the other end of the main pipe pass is connected with a gas phase pipe orifice flange. An ethylene pipeline, a nitrogen pipeline and a release flare pipeline are separated from the other end of the main tube pass, and an operation display interface, a key bin, a human body electrostatic ball, a function button group and a voice prompter are arranged on the main controller. According to the technical scheme, all ethylene devices are intelligently managed through the intelligent system, automatic control over the whole ethylene unloading process and real-time monitoring and danger early warning over the whole ethylene unloading process are achieved, and safety accidents caused by static electricity, combustible gas leakage, replacement purging process errors and the like can be effectively prevented; and the workload of operators is reduced while safe operation of ethylene unloading is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of petrochemical industry safety technology, especially to the field of ethylene unloading safety technology, and specifically relates to an intelligent control system applied to ethylene unloading. BACKGROUND

[0002] Ethylene is a flammable gas, which is prone to explosion and combustion when encountering static electricity and sparks, causing casualties and economic losses. Therefore, low-temperature ethylene has high requirements for static electricity and the air tightness of unloading pipelines during unloading. Before unloading, the crane pipe is usually connected first, and then the air tightness of the crane pipe and the unloading pipeline is detected. During the detection of the air tightness of the crane pipe and the unloading pipeline, the valves of each pipeline need to be opened and closed manually by the staff multiple times, and the pressure gauge needs to be observed constantly. The connection state of the crane pipe and the air tightness of each pipeline are judged according to experience, and safety accidents are easily caused by personnel operation errors.

[0003] In addition, low-temperature ethylene needs to pass through the tank truck, the unloading pipeline, the crane pipe, and the gas-liquid automatic valve on the platform multiple times during unloading, and the unloading pipeline needs to be replaced and purged multiple times. The operation process is very complicated, and safety accidents are easily caused by errors in the replacement and purging process and improper personnel operation. Therefore, an intelligent control system is needed that can automatically control the start and stop of the on-site equipment, automatically control the opening and closing of each valve on the unloading pipeline, automatically complete the air tightness detection and replacement and purging operation according to the set number of times and time, and can also monitor the ethylene unloading process to realize safety warning for ethylene unloading. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide an intelligent control system applied to ethylene unloading, which can monitor and warn the operation process of ethylene unloading in real time, automatically control the ethylene unloading equipment, judge the interlocking of each ethylene unloading equipment according to the parameters and working states of each equipment during ethylene unloading, automatically control the opening or closing of the valve according to the preset time and number of times of the system, complete the air tightness detection and replacement and purging process, reduce the workload of the staff, effectively prevent safety accidents caused by static electricity, flammable gas leakage, and errors in the replacement and purging process, and ensure safe operation of ethylene unloading.

[0005] To achieve the above-mentioned purpose, the utility model provides an intelligent control system applied to ethylene unloading, which comprises an ethylene tank truck, an unloading pipeline, and a main control unit. The ethylene tank truck is connected to the main control unit through a vehicle static electricity clamp. The unloading pipeline comprises a main pipeline section. One end of the main pipeline section is connected to the ethylene tank truck through a gas phase pipe mouth flange. The other end of the main pipeline section branches out an ethylene pipeline, a nitrogen pipeline, and a flare pipeline. The main control unit is provided with an operation display interface, a key storage, a human body static electricity ball, a function button group, and a voice prompter.

[0006] Further, the main pipe is provided with a pressure transmitter for detecting the pressure of the unloading pipeline at the end away from the ethylene tank car, and the pressure transmitter is connected with the main controller through a communication data line.

[0007] Further, the main controller controls the opening and closing of the electromagnetic valves on the unloading pipeline through the function button group.

[0008] Further, the function button group has five function buttons, which are a gooseneck connection confirmation button, a nitrogen purging button, a nitrogen replacement button, an ethylene replacement button and an emergency stop button.

[0009] Further, the electromagnetic valves on the unloading pipeline include a first electromagnetic valve arranged on the main pipe near the end of the ethylene tank car, a second electromagnetic valve arranged on the ethylene pipeline, a third electromagnetic valve arranged on the nitrogen pipeline and a fourth electromagnetic valve arranged on the flare pipeline.

[0010] Further, a detachable gooseneck is arranged on the main pipe between the first electromagnetic valve and the pressure transmitter.

[0011] Further, the main controller is equipped with an ethylene unloading system for receiving and processing the working information of each ethylene unloading device.

[0012] Further, the ethylene unloading system includes an interlocking main control module, a vehicle key management interlocking control module, an electrostatic interlocking control module, a combustible gas leakage interlocking control module and a replacement purging control module.

[0013] Further, it also includes a host system and a risk warning system, the host system is used for real-time display of the parameters and operation process of each ethylene unloading device, and the risk warning system is used for receiving, storing and analyzing historical operation data, and warning risks according to the historical operation data, and displaying the danger degree of on-site operation.

[0014] Compared with the prior art, the utility model has the beneficial effects of:

[0015] The utility model discloses a main controller and an ethylene unloading system control the opening and closing state of the electromagnetic valve on the unloading pipeline, replace the manual monitoring and dangerous judgment on the gooseneck connection state, the unloading pipeline gas tightness detection and replacement purging operation, and the operator can realize the full-automatic management of the ethylene unloading replacement purging process only through the function button group, reduces the replacement purging operation mistake caused by human factors, guarantees the ethylene unloading safety, and reduces the workload of the operator.

[0016] The utility model discloses a human body static electricity, vehicle static electricity, key management and combustible gas leakage dangerous judgment and interlock control module are combined, through ethylene unloading system and the real -time monitoring and judgment of the working condition of ethylene unloading equipment of upper position system, detect, analyze the dangerous information of equipment work, and the interlock judgment of ethylene unloading equipment, timely stop the ethylene unloading operation under the abnormal state, effectively avoid the occurrence of the safety accident caused by static electricity, combustible gas leakage, improper replacement purging operation, improper ethylene tank car parking etc., guarantee the safety of ethylene unloading operation;

[0017] The utility model discloses through ethylene unloading system gathers the operation data of each unloading equipment, and through the operation data of upper position system is uploaded to risk early warning system and is stored and is analyzed, and according to historical data carries out risk prediction and equipment evaluation, and the management personnel is convenient for record, inquires historical data to each unloading equipment is maintained according to risk analysis. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will be briefly introduced the drawings needed to be used in the specific embodiment or prior art description, obviously, the drawings in the following description is some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.In the drawings:

[0019] Figure 1 The utility model discloses a kind of overall structure schematic diagram of intelligent control system applied to ethylene unloading of the whole structure schematic diagram of the utility model.

[0020] Among them, the reference numeral in the above drawing is:

[0021] 1, ethylene tank car;2, unloading pipeline;3, main control unit;4, risk early warning system;5, ethylene unloading system;6, upper position system;21, main pipe process;22, ethylene pipeline;23, nitrogen pipeline;24, venting flare pipeline;31, operation display interface;32, key store;33, human body static electricity ball;34, function button group;35, voice prompter;36, vehicle static electricity clamp;41, pressure transmitter;42, combustible alarm;51 first solenoid valve;52, second solenoid valve;53, third solenoid valve;54, fourth solenoid valve;55, swivel. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model will be described clearly and completely in the following in combination with drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all embodiments.Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0023] As shown in Figure 1 An application for ethylene unloading intelligent control system, can automatically control ethylene unloading equipment, according to the parameters and working condition of ethylene unloading equipment, interlock judgment of static electricity, combustible gas, real-time monitoring and early warning of ethylene unloading process and unloading operation, effectively prevent safety accidents caused by static electricity, combustible gas leakage, replacement of blowing process error, ensure the safety of ethylene unloading operation.

[0024] To achieve the above object, the utility model provides an application for ethylene unloading intelligent control system, including ethylene tank car 1, unloading pipeline 2 and main control unit 3, ethylene tank car 1 is connected with main control unit 3 through vehicle static clamp 36, unloading pipeline 2 includes main pipe course 21, one end of main pipe course 21 is connected with ethylene tank car 1 through gas phase pipe mouth flange, the other end of main pipe course 21 divides out ethylene pipeline 22, nitrogen pipeline 23 and vent torch pipeline 24, main control unit 3 is provided with operation display interface 31, key storehouse 32, human body static ball 33, function button group 34 and voice prompter 35. Main control unit 3 is used for monitoring and analyzing the working parameters and working condition of each ethylene unloading equipment, controls the switch state of each valve on ethylene unloading equipment, according to the working parameters and operating data of each ethylene unloading equipment, carries out interlock judgment and danger early warning to each ethylene unloading equipment. Vehicle static clamp 36 is used for monitoring and releasing vehicle static electricity. Operation display interface 31 is used for real-time display of the parameters of each ethylene unloading equipment and the operation process of ethylene unloading operation. Key storehouse 32 is used for monitoring and accessing the vehicle key of ethylene tank car 1. Human body static ball 33 is used for monitoring and releasing human body static electricity. Voice prompter 35 is used for issuing operation instructions, indicating relevant personnel to start corresponding unloading operation. Function button group 34 is used for controlling ethylene unloading equipment to automatically control corresponding ethylene unloading operation according to the time and number of system preset.

[0025] Specifically, the one end of main pipe course 21 away from ethylene tank car 1 is provided with pressure transmitter 41 for detecting the pressure of unloading pipeline 2, and the pressure transmitter 41 is connected with the main control unit 3 through the communication data line 485.

[0026] Specifically, the main control unit 3 controls the switch of each electromagnetic valve on the unloading pipeline 2 through the function button group 34. The main control unit 3 controls the process of ethylene unloading by controlling the switch of each electromagnetic valve on the unloading pipeline 2.

[0027] Specifically, the function button group 34 has five function buttons, which are respectively a snorkel connection confirmation button, a nitrogen blowing button, a nitrogen replacement button, an ethylene replacement button and an emergency stop button.

[0028] Specifically, the solenoid valves on the unloading pipeline 2 include a first solenoid valve 51 arranged on the main pipe section 21 near one end of the ethylene tank car 1, a second solenoid valve 52 arranged on the ethylene pipeline 22, a third solenoid valve 53 arranged on the nitrogen pipeline 23, and a fourth solenoid valve 54 arranged on the flare pipeline 24.

[0029] After the gooseneck connection confirmation button is started, the third solenoid valve 53 is opened, the nitrogen pipeline 23 is used to charge the unloading pipeline 2, and the airtightness of the unloading pipeline 2 is checked; after the nitrogen purging button is started, according to the preset time and purging times of the system, the third solenoid valve 53 and the fourth solenoid valve 54 are controlled by the main controller 3 to automatically perform multiple nitrogen purging operations on the unloading pipeline 2; after the nitrogen replacement button is pressed, the system performs multiple nitrogen replacement and venting operations on the unloading pipeline 2 according to the preset time and purging times, and the third solenoid valve 53 and the fourth solenoid valve 54 are controlled by the main controller 3; after the ethylene replacement button is started, the second solenoid valve 52 and the fourth solenoid valve 54 are controlled by the main controller 3, and multiple ethylene replacement and venting operations are automatically performed on the unloading pipeline 2 according to the preset time and times of the system; after the emergency stop button is started, the first solenoid valve 51 is closed by the main controller 3, and the ethylene unloading operation is stopped.

[0030] Specifically, a detachable gooseneck 55 is arranged on the main pipe section 21 between the first solenoid valve 51 and the pressure transmitter 41. The gooseneck 55 is connected in a hard connection mode and is equipped with corresponding intelligent systems and safety devices such as emergency disconnection, which can effectively prevent pipe explosion and rupture and improve the safety of the ethylene unloading operation.

[0031] Specifically, the main controller 3 is equipped with an ethylene unloading system 5 for receiving and processing the working information of each ethylene unloading device. The ethylene unloading system 5 is used to receive the working parameters and operation data of each unloading device, and according to the working conditions and data information of each unloading device, the unloading device is subjected to interlocking judgment and autonomous control.

[0032] Specifically, the ethylene unloading system 5 includes an interlock master module, a vehicle key management interlock control module, an electrostatic interlock control module, a combustible gas leakage interlock control module, and a displacement purge control module. The master controller 3 receives and analyzes interlocking information of each interlocking module through the interlock master module, exchanges information with the displacement purge control module, controls the opening and closing states of each electromagnetic valve of the unloading pipeline 2, and transmits the interlocking information to the upper system 6 to control the combustible alarm 42 to perform danger alarm. The master controller 3 controls the opening and closing of the key box 32 through the vehicle key management interlock control module, monitors the access state of the vehicle key, receives the data information of the key box, and performs interlocking judgment according to the access state of the vehicle key, and transmits the vehicle key interlocking information. The master controller 3 controls the human body electrostatic sphere 33 and the vehicle electrostatic clamp 36 to perform electrostatic monitoring and release through the electrostatic interlock control module, and performs interlocking judgment on the electrostatic of the human body and the vehicle, and transmits the interlocking information. The master controller 3 receives and transmits the data information of the pressure transmitter 41 through the combustible gas leakage interlock control module, performs interlocking judgment on the airtightness of the unloading pipeline 2 and the crane pipe 55 based on the data information, and controls the combustible alarm 42 to perform danger alarm on gas leakage. The master controller 3 controls the opening and closing states of each electromagnetic valve on the unloading pipeline 2 through the displacement purge control module, receives the preset information of the upper system 6 and the key information of the function button group, and controls each ethylene unloading equipment to complete the displacement purge process according to the time and number of times preset by the upper system 6. The ethylene unloading system 5 performs interlocking judgment on each ethylene unloading equipment according to the working state and working signal of each ethylene unloading equipment controlled by each interlocking module, and transmits related data to the upper system 6, effectively prevents safety accidents caused by electrostatic, combustible gas leakage, displacement purge process error and the like, and ensures ethylene unloading safety operation.

[0033] Specifically, the upper system 6 and the risk early warning system 4 are further included, the upper system 6 is used for displaying parameters and operation processes of each ethylene unloading equipment in real time, and the risk early warning system 4 is used for receiving, storing and analyzing historical operation data, and performing risk early warning according to the historical operation data to display a dangerous degree of on-site operation. The upper system 6 is arranged on a control room computer, the control room computer is connected with the master controller 3 through a communication data line 485 line, receives each data of the ethylene unloading system 5 and displays the data on a software interface, and the risk early warning system 4 is an application system one layer higher than the upper system 6 and is used for displaying a risk degree of on-site operation.

[0034] The intelligent control system applied to ethylene unloading provided by the utility model specifically works as follows:

[0035] After the ethylene tank car 1 arrives at the designated location, the driver stops the vehicle and pulls out the vehicle key, the relevant staff touches the human body static electricity ball 33, detects and releases the human body static electricity, and the static electricity interlocking control module analyzes the human body static electricity release situation. After the human body static electricity is released, the static electricity interlocking control module releases the human body static electricity interlock, the key box 32 automatically punches the card, the hatch of the key box 32 is opened, and the voice prompter 35 reminds the driver to put in the vehicle key. After the vehicle key is put in, the vehicle key management interlocking control module detects the key storage state, closes the hatch of the key box 32, and the vehicle key management interlocking control module releases the interlock. After the hatch of the key box 32 is closed, the voice prompter 35 reminds the relevant staff to connect the vehicle static electricity clamp 36 between the main control unit 3 and the ethylene tank car 1, monitor and release the vehicle static electricity, and the static electricity interlocking control module analyzes the vehicle static electricity release situation. The static electricity interlocking control module releases the vehicle static electricity interlock.

[0036] After the vehicle static electricity is released, the voice prompter 35 reminds the staff to connect the crane pipe 55, and after the crane pipe 55 is connected, the crane pipe connection confirmation button is pressed. The ethylene unloading system 5 carries out the crane pipe 55 connection state and the air tightness test of the unloading pipeline 2 and the crane pipe 55. The main control unit 3 controls the third electromagnetic valve 53 to be opened through the ethylene unloading system 5, fills the pressure in the unloading pipeline 2 through the nitrogen gas pipeline 23, the pressure transmitter 41 senses the pressure change, transmits the data to the main control unit 3 through the communication data line 485, and then transmits the data to the upper system 6 through the ethylene unloading system 5. When the pressure value in the unloading pipeline 2 reaches the preset value of the upper system, the ethylene unloading system 5 controls the third electromagnetic valve 53 to be closed, starts the pressure maintaining timing, and detects the air tightness of the unloading pipeline 2 and the crane pipe 55 by monitoring the pressure change in a certain period of time. If the air tightness test is unqualified, the combustible gas leakage interlocking control module interlocks the equipment, the interlocking main control module senses the interlocking information, the ethylene unloading system 5 closes the valve on the unloading pipeline 2, prohibits the ethylene unloading operation, and transmits the interlocking information to the upper system, and the combustible gas leakage alarm is carried out through the combustible gas leakage alarm 42. If the air tightness test is qualified, the combustible gas leakage interlocking control module releases the interlock, and the voice prompter 35 prompts the relevant staff to start the nitrogen replacement button to enter the replacement and purging process. The replacement and purging control module of the ethylene unloading system 5 controls the opening and closing of the third electromagnetic valve 53 and the fourth electromagnetic valve 54, and automatically replaces and empties the unloading pipeline 2 multiple times according to the preset holding time and replacement times of the upper system 6.

[0037] After the nitrogen replacement is completed, the operation display interface 31 displays the nitrogen replacement completion information, the voice prompter 35 reminds the relevant staff to start the ethylene replacement button, the main controller 3 controls the opening and closing of the second electromagnetic valve 52 and the third electromagnetic valve 53 through the replacement and blowing module of the ethylene unloading system 5, and automatically carries out multiple ethylene replacement and emptying according to the holding time and replacement times of a single replacement preset by the upper system 6. The main controller 3 controls the opening of the second electromagnetic valve 52 through the replacement and blowing module of the ethylene unloading system 5, inputs the pressurized ethylene into the unloading pipeline 2 and the crane pipe 55, keeps for a period of time, then closes the second electromagnetic valve 52, opens the fourth electromagnetic valve 54, and automatically empties the ethylene into the flare.

[0038] After the ethylene replacement is completed, the operation display interface 31 displays the ethylene replacement completion information, the ethylene unloading system 5 controls the opening of the first electromagnetic valve 51 through the main controller 3, and starts the ethylene unloading. After the ethylene unloading is completed, the operation display interface 31 displays the unloading completion information, the ethylene unloading system controls the closing of the first electromagnetic valve 51 through the main controller, and stops the ethylene unloading operation. The voice prompter 35 reminds the relevant staff to start the nitrogen blowing button, and enters the nitrogen blowing process. The main controller 3 controls the opening of the fourth electromagnetic valve 54 through the ethylene unloading system 5, empties the pressurized ethylene into the flare through the emptying flare pipeline 24, and then controls the opening of the third electromagnetic valve 53, and blows the nitrogen into the unloading pipeline 2 through the nitrogen pipeline 23. The ethylene unloading system 5 autonomously controls the main controller 3 to complete the nitrogen blowing operation according to the time and number of a single blowing preset by the upper system 6, and ensures that the residual ethylene in the unloading pipeline 2 is completely blown clean.

[0039] During the ethylene unloading process, the operation display interface 31 of the main controller 3 and the upper system 6 display the parameters and operation process of each unloading device in real time, and the operation information is prompted through the voice prompter 35, so that the operator can complete the crane pipe 55 connection and replacement and blowing process according to the regulations, and when problems occur during the unloading process, the relevant personnel can be reminded in time and take corresponding measures. The ethylene unloading system 5 controls each unloading device through the main controller 3, collects the working parameters and working states of each unloading device, and transmits the data to the upper system 6 through the communication data line 485. The upper system 6 is deployed in the computer in the control room, which is used to receive various data from the ethylene unloading system 5 and display them on the software interface. The risk early warning system is one layer higher than the upper system, which stores the operation data in real time, is used to retrieve, analyze and manage the data of the unloading pipeline 2, the ethylene tank car and the crane pipe 55 and other ethylene unloading devices, displays the risk degree of the on-site operation and maintains in time, and safeguards the safety of the ethylene unloading operation. During the ethylene unloading process, the relevant staff can also start the emergency stop button when problems are found, control the closing of the first electromagnetic valve 51 through the ethylene unloading system 5, and stop the ethylene unloading operation in time, so as to safeguard the safety of the ethylene unloading operation.

[0040] Of course, the above description is not a limitation of the utility model, the utility model is also not limited to the above examples, the changes, modifications, additions or replacements made by the person skilled in the art within the essential scope of the utility model should also belong to the protection scope of the utility model.

Claims

1. An intelligent control system applied to ethylene unloading, characterized in that, The ethylene tank car is connected with the master controller through a vehicle electrostatic clamp, and the unloading pipeline includes a main pipeline section, one end of which is connected with the ethylene tank car through a gas phase pipe mouth flange, and the other end of which branches into an ethylene pipeline, a nitrogen pipeline and a flare pipeline, and the master controller is provided with an operation display interface, a key storage, a human electrostatic sphere, a function button group and a voice prompter.

2. The intelligent control system for ethylene unloading according to claim 1, wherein, A pressure transmitter for detecting the pressure of the unloading pipeline is arranged at the end of the main pipeline section away from the ethylene tank car, and the pressure transmitter is connected with the master controller through a communication data line.

3. The intelligent control system for ethylene unloading according to claim 2, wherein, The master controller controls the opening and closing of each electromagnetic valve on the unloading pipeline through the function button group.

4. The intelligent control system for ethylene unloading according to claim 3, wherein, The function button group has five function buttons, which are respectively a snaking pipe connection confirmation button, a nitrogen purging button, a nitrogen replacement button, an ethylene replacement button and an emergency stop button.

5. The intelligent control system for ethylene unloading as claimed in claim 4, wherein, The electromagnetic valves on the unloading pipeline include a first electromagnetic valve arranged on the main pipeline section close to the ethylene tank car, a second electromagnetic valve arranged on the ethylene pipeline, a third electromagnetic valve arranged on the nitrogen pipeline and a fourth electromagnetic valve arranged on the flare pipeline.

6. The intelligent control system for ethylene unloading according to claim 5, wherein, A detachable snaking pipe is arranged on the main pipeline section between the first electromagnetic valve and the pressure transmitter.

7. The intelligent control system for ethylene unloading according to claim 6, wherein, The master controller is equipped with an ethylene unloading system for receiving and processing the working information of each ethylene unloading device.

8. The intelligent control system for ethylene unloading according to claim 7, wherein, The ethylene unloading system includes an interlocking master control module, a vehicle key management interlocking control module, an electrostatic interlocking control module, a combustible gas leakage interlocking control module and a replacement and purging control module.

9. The intelligent control system for ethylene unloading according to claim 8, wherein, An upper system and a risk early warning system are further included, the upper system is used for real-time display of the parameters and operation process of each ethylene unloading device, and the risk early warning system is used for receiving, storing and analyzing historical operation data, and performing risk early warning according to the historical operation data, and displaying the danger degree of on-site operation.

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