CN112128625A - Dangerous gas pipeline leakage monitoring system and method - Google Patents
Dangerous gas pipeline leakage monitoring system and method Download PDFInfo
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- CN112128625A CN112128625A CN202011084860.XA CN202011084860A CN112128625A CN 112128625 A CN112128625 A CN 112128625A CN 202011084860 A CN202011084860 A CN 202011084860A CN 112128625 A CN112128625 A CN 112128625A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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Abstract
The invention provides a system and a method for monitoring leakage of a hazardous gas pipeline, wherein the system comprises a monitoring unit, a sub-control unit and a main control unit; the monitoring unit is used for acquiring dangerous gas information in the sub-monitoring space; the sub-control unit is used for monitoring the concentration of each dangerous gas in the dangerous gas information, and when the concentration exceeds a preset concentration threshold value, the sub-alarm unit sends out alarm information, generates fault information and sends the fault information to the main control unit; the master control unit adjusts the working state of the equipment related to the hazardous gas pipeline according to the fault information; the system and the method of the invention can realize the automatic monitoring of the leakage of the dangerous gas pipeline, and can also quickly reduce the concentration of the dangerous gas in the sub-monitoring space when the leakage of the dangerous gas occurs, thereby greatly reducing the occurrence probability of explosion accidents and the like when the dangerous gas leaks, and effectively ensuring the safety of personnel.
Description
Technical Field
The invention relates to a safety technical method, in particular to a dangerous gas pipeline leakage monitoring system and a method.
Background
The ship pipeline is communicated with the inside of the ship body in all directions and is mainly used for conveying water, oil, gas and the like. Pipelines for ships such as chemical ships, tankers, and LNG ships are generally provided with pipelines for transporting and storing hazardous gases. However, the pipeline connection method of the ship pipelines is mainly welding, so that the welding positions of the pipelines are easy to have the risk of leakage; and, when the pipeline ages, problems such as leakage are also easy to occur. When leakage occurs, dangerous gases such as oxide, sulfide, nitrogen oxide and the like in the pipeline are diffused into the cabin, most of the dangerous gases are colorless and odorless and are not easy to be perceived by people, so that the health of crews in the cabin is seriously influenced, and even the life safety of the crews is endangered; in addition, if the dangerous gas contains flammable and explosive gas, if the flammable and explosive gas is not found in time, after the flammable and explosive gas is accumulated to a certain concentration, a fire or explosion and other major accidents are easy to happen when the flammable and explosive gas meets open fire or static electricity and the like. However, the existing ship hazardous gas leakage monitoring device is usually only used for monitoring the concentration of hazardous gas in a ship, when leakage is found, alarm information is sent out, and a crew starts to process the leakage condition after obtaining the leakage information.
Therefore, how to monitor the leakage of the hazardous gas pipeline in the ship and how to implement the ship management and control treatment after the leakage of the hazardous gas become technical problems to be solved in the field.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a system and a method for monitoring a hazardous gas pipeline leakage, which are used to solve the problems that the existing ship hazardous gas pipeline leakage monitoring device only monitors the concentration information of the hazardous gas, and after the ship leaks the hazardous gas pipeline leakage monitoring device lacks the cooperative control of the ship to control or reduce the concentration of the hazardous gas.
In order to achieve the above and other related objects, the present invention provides a system for monitoring leakage of a hazardous gas pipeline, which is disposed in a main monitoring space, wherein a sub-monitoring space is disposed in the main monitoring space, and the system comprises: the monitoring unit is arranged in each sub-monitoring space and used for acquiring the information of the hazardous gas in the sub-monitoring space; the hazardous gas information includes each hazardous gas type and gas concentration: the sub-control units correspond to the sub-monitoring spaces one by one, and are connected with the main control unit; the single sub-control unit is connected with the monitoring unit and the sub-alarm unit in the corresponding sub-monitoring space, and is used for receiving the hazardous gas information sent by the monitoring unit and monitoring whether the gas concentration of each hazardous gas is greater than a preset concentration alarm threshold value; if yes, determining that the corresponding sub-monitoring space is a leakage space of the dangerous gas, enabling the sub-alarm unit to give an alarm, generating fault information, and sending the fault information to the main control unit; wherein the fault information includes the hazardous gas information and the positional information of the leak space: and the master control unit is connected with the dangerous gas pipeline related devices and used for adjusting the working states of the dangerous gas pipeline related devices according to the received fault information so as to prevent the dangerous gas from entering the leakage space.
In an embodiment of the present invention, a single sub-control unit is connected to the exhaust unit in the corresponding sub-monitoring space, and is configured to enable the exhaust unit to exhaust outwards after the sub-monitoring space is determined to be the leakage space.
In an embodiment of the present invention, the master control unit is connected to a master alarm unit in the master monitoring space, and is configured to enable the master alarm unit to send an alarm according to the received fault information.
In an embodiment of the present invention, an implementation manner of the master control unit connecting with the devices related to the hazardous gas pipeline includes: and the master control unit is connected with a fan arranged in a dangerous gas pipeline and used for stopping the fan according to the received fault information.
In an embodiment of the present invention, an implementation manner of the master control unit connecting with the devices related to the hazardous gas pipeline includes: and the master control unit is connected with an electric isolation gate arranged in the dangerous gas pipeline and used for closing the electric isolation gate which is closest to the leakage space in the dangerous gas pipeline according to the received fault information.
In an embodiment of the present invention, the master control unit is connected to the alarm devices in the other spatial units except the sub-monitoring space in the master monitoring space, and is configured to enable the alarm devices in the other spatial units to send out an alarm according to the received fault information.
In an embodiment of the present invention, a single sub-control unit is connected to the corresponding non-explosion-proof power equipment in the sub-monitoring space, and is configured to shut down operation of the non-explosion-proof power equipment when the sub-control unit monitors that the hazardous gas type includes flammable and explosive gases according to the hazardous gas information, and a gas concentration of each flammable and explosive gas is greater than a preset concentration flammability threshold.
In an embodiment of the present invention, the master control unit is connected to the starting devices of the gas fire extinguishing systems in the sub-monitoring spaces, and is configured to open the starting devices of the gas fire extinguishing systems corresponding to the types of the flammable and explosive gases according to the received fault information.
The invention also provides a method for monitoring the leakage of the dangerous gas pipeline, which is applied to a dangerous gas pipeline leakage monitoring system comprising a monitoring unit, a sub-control unit and a main control unit; the monitoring units are used for acquiring dangerous gas information in each sub-monitoring space; each sub-control unit corresponds to each sub-monitoring space one by one, and a single sub-control unit is connected with the monitoring units and the sub-alarm units in the corresponding sub-monitoring spaces; the main control unit is connected with each sub-control unit and connected with a dangerous gas pipeline related device; the method comprises the following steps: the sub-control unit receives the hazardous gas information sent by the monitoring unit; the dangerous gas information comprises various dangerous gas types and gas concentrations; the sub-control unit monitors whether the concentration of each dangerous gas is greater than a preset concentration alarm threshold value or not according to the dangerous gas information, and if not, the sub-control unit continues monitoring; if yes, judging the sub-monitoring space to be a leakage space, and enabling the sub-alarm unit to give out an alarm; the sub-control unit generates fault information according to the dangerous gas information and the position information of the leakage space, and sends the fault information to a main control unit, so that the main control unit adjusts the working state of the dangerous gas pipeline related device according to the received fault information; the above steps are repeated.
In an embodiment of the present invention, the master control unit is connected to a master alarm unit in a master monitoring space; the method further comprises the following steps: and the master control unit regulates the working state of the dangerous gas emission related device according to the received fault information, and simultaneously enables the master alarm unit to send out fault alarm according to the received fault information.
In an embodiment of the present invention, the main control unit is connected to the sub-alarm units in the other spatial units except the sub-monitoring space in the main monitoring space; the method further comprises the following steps: and when the master control unit adjusts the working state of the dangerous gas emission related device, the master control unit enables the sub-alarm units in the other space units to give an alarm according to the received fault information.
In an embodiment of the present invention, a single sub-control unit is connected to the corresponding non-explosion-proof power equipment in the sub-monitoring space; the method further comprises the following steps: and after the sub-monitoring space is judged to be a leakage space and the sub-alarm unit gives an alarm, the sub-control unit monitors whether the dangerous gas information contains flammable and explosive gas types, if so, monitors whether the gas concentration corresponding to each flammable and explosive gas type is greater than a preset concentration burning and explosion threshold value, and if so, closes the operation of non-explosion-proof power equipment in the sub-monitoring space.
In an embodiment of the present invention, the master control unit is connected to the starting devices of the gas fire extinguishing systems in the sub-monitoring spaces; the method further comprises the following steps: and the master control unit opens a starting device of the gas fire extinguishing system corresponding to the type of the flammable and explosive gas according to the received fault information.
In an embodiment of the present invention, an implementation manner of the general control unit adjusting the working state of the hazardous gas discharge related device according to the received fault information includes: and the master control unit is connected with an exhaust fan of the dangerous gas pipeline and stops the exhaust fan according to the received fault information.
In an embodiment of the present invention, an implementation manner of the general control unit adjusting the working state of the hazardous gas discharge related device according to the received fault information further includes: and the master control unit is connected with an electric isolation gate of the dangerous gas pipeline, and closes the electric isolation gate which is closest to the sub-monitoring space in the dangerous gas pipeline according to the received fault information.
As described above, according to the system and method for monitoring leakage of a hazardous gas pipeline, provided by the invention, by arranging the monitoring unit, the sub-control unit and the main control unit, hazardous gas information in the sub-monitoring space can be acquired and monitored, when the hazardous gas information exceeds a preset concentration threshold value, the sub-alarm unit in the sub-monitoring space alarms, the exhaust unit is started to exhaust, fault information is generated and sent to the main control unit, and the main control unit adjusts the working state of the equipment related to the hazardous gas pipeline according to the fault information so as to reduce the concentration of the hazardous gas in the leakage space; the system can monitor the operation safety of the dangerous gas pipeline, can timely inform personnel of rapidly evacuating when the leakage of the dangerous gas occurs, and can timely close the gas source of the dangerous gas when the leakage of the dangerous gas is monitored by cooperatively controlling the working states of the related equipment, the exhaust unit and the like of the dangerous gas pipeline in the main monitoring space, so that the dangerous gas in the pipeline is prevented from further leaking into the leakage space, the gas in the leaked sub-monitoring space is exhausted to the outer space of the ship body, the concentration of the dangerous gas in the sub-monitoring space is reduced, the probability of accidents such as explosion and the like of the sub-monitoring space is reduced, and the safety of the personnel is further ensured.
Drawings
FIG. 1 is a schematic structural diagram of a hazardous gas pipeline leakage monitoring system according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating an embodiment of the method for monitoring a hazardous gas pipeline leakage according to the present invention;
fig. 3 is a schematic flow chart of the method for monitoring a hazardous gas pipeline leakage according to another embodiment of the present invention.
Description of the element reference numerals
S102 to S106 steps
1 dangerous gas pipeline leakage monitoring system
11 monitoring unit
12-minute control unit
13 Total control Unit
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way.
Example 1
Referring to fig. 1, a schematic structural diagram of the hazardous gas pipeline leakage monitoring system according to an embodiment of the present invention is shown.
In this embodiment, the hazardous gas pipeline leakage monitoring system is disposed in a monitoring cabin of a ship; wherein a hazardous gas pipeline is arranged in the monitoring cabin; such as diesel and LNG ships, etc.
As shown in fig. 1, the hazardous gas pipeline leakage monitoring system includes a monitoring unit, a sub-control unit and a main control unit.
The monitoring units are respectively arranged in monitoring cabins, and the monitoring cabins are cabins provided with dangerous gas pipelines in the ship; specifically, each monitoring unit is arranged around a hazardous gas pipeline in the monitoring cabin.
The monitoring unit comprises concentration sensors of various dangerous gases and is used for acquiring dangerous gas information in the monitoring cabin in real time. Wherein the hazardous gas information comprises the type of each hazardous gas and gas concentration data of each hazardous gas.
The sub-control units are arranged in one-to-one correspondence with the monitoring cabins, namely, one sub-control unit is arranged in correspondence with each monitoring cabin; each sub-control unit is connected with the main control unit; the single sub-control unit is connected with the corresponding monitoring unit and the sub-alarm unit in the monitoring cabin and is used for acquiring the dangerous gas information sent by the monitoring unit in the corresponding monitoring cabin, monitoring whether the gas concentration of each dangerous gas is greater than a preset concentration alarm threshold value or not according to the dangerous gas information, and if not, continuing monitoring; if the leakage ship cabin is determined to be the dangerous gas leakage ship cabin, the corresponding monitoring ship cabin is determined, and a control signal is sent to enable the sub-alarm unit to send out alarm information so as to remind crews in the leakage ship cabin to evacuate rapidly.
Meanwhile, the sub-control unit generates fault information according to the dangerous gas information and the position information of the leaking cabin, and sends the fault information to the main control unit.
Specifically, the sub-control unit comprises a microcontroller and a memory connected with the microcontroller; the memory is used for storing the received dangerous gas information and preset concentration alarm threshold values of various dangerous gases; the microcontroller is used for analyzing and judging the received dangerous gas information to obtain a judgment result and generating a corresponding control signal according to the judgment result.
The concentration alarm threshold is a preset alarm concentration value of each dangerous gas, corresponds to each dangerous gas type, and is smaller than the concentration standard of each dangerous gas threatening the health and explosion of human bodies.
The sub-alarm units are arranged in the monitoring cabins, and comprise but not limited to an acousto-optic alarm device and a voice alarm device, and are used for giving out an acousto-optic alarm and/or a voice alarm according to a control signal.
Furthermore, the single sub-control unit is connected with the corresponding exhaust unit in the monitoring cabin, and is used for sending a control signal to the exhaust unit after the monitoring cabin is determined to be the leaking cabin, so that the exhaust unit exhausts the air in the leaking cabin to the space outside the ship body, namely the open space.
Further, it is single divide the control unit to connect the non-explosion-proof power equipment who corresponds in the monitoring cabin, be used for as divide the control unit basis contain flammable and explosive gas in the hazardous gas is confirmed to the hazardous gas information, and confirm that the gas concentration of flammable and explosive gas is greater than when the predetermined concentration blasting threshold value, in time close non-explosion-proof power equipment's operation, in order to prevent when flammable and explosive gas reaches certain concentration, the static that produces when non-explosion-proof power equipment moves, causes accidents such as conflagration or explosion easily to ensure crew's safety better.
The concentration explosion threshold is a preset concentration value of each flammable and explosive gas, corresponds to the type of each flammable and explosive gas, and is lower than the lowest explosion limit concentration value corresponding to each flammable and explosive gas.
Furthermore, it is single the branch control unit connects the display that corresponds in the monitoring cabin for with hazardous gas information routing to display element shows, so that the crew in the monitoring cabin can acquire the hazardous gas information in this monitoring cabin conveniently.
The main control unit is connected with the branch control units and the devices related to the dangerous gas pipelines in the ship body, and is used for receiving the fault information sent by the branch control units, adjusting the working state of the devices related to the dangerous gas pipelines according to the fault information, and closing the gas sources of the dangerous gas to prevent the dangerous gas from entering the leakage cabin.
Specifically, the total control unit includes, but is not limited to, a terminal device or a monitoring server.
In this embodiment, the hazardous gas pipeline related device includes a fan disposed in the hazardous gas pipeline; in one embodiment, the blower includes, but is not limited to, an induced draft fan disposed at the outlet of the hazardous gas pipeline, and/or a blower disposed at the inlet of the hazardous gas pipeline, for pumping the hazardous gas out of the hazardous gas cabin.
The master control unit is connected with a fan in the dangerous gas pipeline; and after the master control unit receives the fault information, the corresponding fan in the dangerous gas pipeline is stopped to stop running, and the discharge process of the dangerous gas is interrupted in time, so that the concentration of the dangerous gas in the leakage cabin is prevented from increasing.
Further, the dangerous gas pipeline related device also comprises an electric isolation brake arranged in the dangerous gas pipeline. In one embodiment, the electric isolation locks are disposed in the hazardous gas pipeline at intervals according to cabin arrangement.
The master control unit is connected with the electric isolation gates; the master control unit stores the position information of each electric isolation gate; after the master control unit receives the fault information, according to the position information of the leaking cabin in the fault information, the position information of the electric isolation lock closest to the leaking cabin is obtained through a space analysis method, and the closest electric isolation lock is closed according to the position information, so that dangerous gas in a dangerous gas pipeline is prevented from entering the leaking cabin, and particularly, the dangerous gas is continuously leaked into the leaking cabin under the negative pressure state generated when an exhaust fan of the leaking cabin exhausts the outside. The nearest electric isolation lock is an electric isolation lock which is in a dangerous gas pipeline and is nearest to the leaking cabin in a gas inflow direction and a gas outflow direction with the leaking cabin as an origin.
Further, the master control unit is connected with a master alarm unit of the ship, and after the master control unit receives the fault information, the master control unit enables the master alarm unit to send out an alarm according to the received fault information; or the main control unit is connected with the sub-alarm units in other cabins in the ship body except the monitoring cabin, so that the dangerous gas leakage information is rapidly notified to other crews in the ship body, the other crews can rapidly, conveniently and accurately know the position, type and the like of the dangerous gas leakage, the emergency danger avoiding method for the other crews during the dangerous gas leakage is rapidly known, the other crews are reminded of rapidly evacuating, or the inspection, the pipeline equipment adjustment, the maintenance treatment and the like are carried out on the premise of ensuring the safety.
Further, the total control unit is connected each starting drive of each gas fire extinguishing system in the monitoring cabin, is used for and works as branch control unit contains flammable and explosive gas in monitoring the dangerous gas that leaks, and gas concentration is greater than that each flammable and explosive gas type corresponds concentration blasting threshold value, total control unit is according to receiving fault information, open with fault information corresponds in the monitoring cabin, and correspond with this flammable and explosive gas type starting drive of gas fire extinguishing system, so that gas fire extinguishing system to leak the cabin and spout fire control gas, through diluting the flammable and explosive gas concentration in this leakage cabin to and the contact of separation flammable and explosive gas and air, further reduce flammable and explosive gas and take place the probability of conflagration and explosion.
Wherein the gas fire suppression system includes, but is not limited to, a haloalkane fire suppression system, a carbon dioxide fire suppression system, and a heptafluoropropane fire suppression system; the starting device of the gas fire extinguishing system comprises a solenoid valve.
Example 2
Referring to fig. 2, a flow chart of the hazardous gas pipeline leakage monitoring method according to an embodiment of the present invention is shown.
The method for monitoring the leakage of the dangerous gas pipeline is applied to a dangerous gas pipeline leakage monitoring system comprising a monitoring unit, a sub-control unit and a main control unit. In this embodiment, the hazardous gas pipeline leakage monitoring system is disposed in a monitoring cabin of a ship; wherein a hazardous gas pipeline is arranged in the monitoring cabin; such as diesel and LNG ships, etc.
The monitoring units are respectively arranged in each monitoring cabin, comprise concentration sensors of each dangerous gas and are used for acquiring the information of the dangerous gas in the monitoring cabins; the single sub-control unit is arranged in one-to-one correspondence with each monitoring cabin and is connected with the monitoring units and the sub-alarm units in the corresponding monitoring cabins; the main control unit is connected with each branch control unit and connected with a dangerous gas pipeline related device in the ship body.
As shown in fig. 2, the method for monitoring the leakage of the hazardous gas pipeline comprises the following steps:
and S102, the sub-control unit receives each piece of dangerous gas information sent by the monitoring unit correspondingly connected with the sub-control unit.
The monitoring unit comprises a concentration sensor of each dangerous gas and is used for acquiring information of each dangerous gas; the hazardous gas information includes types of hazardous gases and gas concentration data associated with each hazardous gas.
Specifically, the monitoring unit acquires information of the hazardous gas in the monitoring cabin where the monitoring unit is located through each hazardous gas concentration sensor; and sending the hazardous gas information to the sub-control units.
S104, the sub-control unit monitors whether the gas concentration of each dangerous gas is greater than a preset concentration alarm threshold value or not according to the received dangerous gas information, and if not, the sub-control unit continues monitoring; if yes, the monitoring cabin is determined to be a leakage cabin, and the sub-alarm unit gives an alarm.
The concentration alarm threshold is a preset alarm concentration value of each dangerous gas, corresponds to each dangerous gas type, and is smaller than the concentration standard of each dangerous gas threatening the health and explosion of human bodies.
The sub-alarm units are arranged in the monitoring cabins and comprise but are not limited to sound-light alarm devices and voice alarm devices.
Specifically, the sub-control unit monitors whether the gas concentration of each hazardous gas is greater than the corresponding concentration alarm threshold value or not based on a preset concentration alarm threshold value according to the received hazardous gas information; if not, continuing monitoring; if the dangerous gas leakage detection device is used, the corresponding monitoring cabin is determined to be a dangerous gas leakage cabin, a control signal is sent to enable the sub-alarm unit to give an alarm, so that personnel in the leakage cabin can quickly and conveniently know the dangerous gas leakage information, the personnel can quickly know an emergency danger avoiding method when the dangerous gas leaks, and the personnel can be reminded of quickly evacuating.
Further, a single sub-control unit is connected to a corresponding exhaust unit in the monitoring cabin, and the method further includes step S104;
and when the monitoring cabin is determined to be a leaking cabin, the sub-alarm unit sends an alarm, the sub-control unit sends control information to the exhaust unit connected with the sub-control unit, and the exhaust unit exhausts the air in the leaking cabin to the space outside the ship body so as to reduce the concentration of the dangerous gas in the leaking cabin.
S106, the sub-control unit generates fault information according to the dangerous gas information and the position information of the leaking cabin, and sends the fault information to the main control unit; and the master control unit adjusts the working state of the relevant devices of the hazardous gas pipeline according to the received fault information.
Wherein the hazardous gas pipeline related device comprises a fan arranged in the hazardous gas pipeline; and the master control unit controls the exhaust fan in the corresponding dangerous gas pipeline to stop running according to the received fault information, and interrupts the discharge process of the dangerous gas in time to prevent the concentration of the dangerous gas in the leakage cabin from increasing.
Further, the hazardous gas pipeline-related device comprises an electric isolation brake arranged in the hazardous gas pipeline; the main control unit closes the electric isolation lock closest to the monitoring cabin in the corresponding dangerous gas pipeline according to the received dangerous gas information and the position information of the leaking cabin in the fault information, namely, the electric isolation lock closest to the leaking cabin in the dangerous gas pipeline in the gas inflow direction and the gas outflow direction with the leaking cabin as an original point so as to prevent the dangerous gas in the dangerous gas pipeline from entering the leaking cabin, and particularly, the dangerous gas continues to leak into the leaking cabin in a negative pressure state generated when an exhaust fan of the leaking cabin exhausts the gas.
Further, in step S106, the method includes: the main control unit is connected with a main alarm unit of the ship; and the master control unit enables the master alarm unit to give an alarm according to the received fault information.
Specifically, the master control unit generates a control signal according to the received fault information, and sends the control signal to the master alarm unit, so that the master alarm unit gives an alarm to quickly notify the leakage information of the hazardous gas to other crews in the ship body, and the other crews can conveniently, quickly and accurately acquire the leakage condition and position of the hazardous gas, thereby reminding the crews to evacuate in time or carry out inspection, pipeline equipment adjustment, maintenance treatment and the like on the premise of ensuring safety.
Further, the main control unit is connected with sub alarm units in other cabins except the monitoring cabin in the ship body; the method further includes, in step S106: and the main control unit enables the main alarm unit to send out an alarm according to the received fault information, and simultaneously generates a corresponding control signal according to the received fault information, sends the control signal to the sub-alarm units in other cabins, and enables the sub-alarm units to send out alarm information according to the received control signal.
In a specific embodiment, the master control unit generates a corresponding control signal according to the received fault information, and sends the control signal to the alarm units in other adjacent cabins around the leaking cabin, so that the sub-alarm units send out alarm information including sound and light alarms and voice alarms according to the received control signal; the voice alarm comprises the position information of the leaked cabin, the type and the concentration information of the dangerous gas and the like, so that crews in other adjacent cabins around the leaked cabin can quickly and conveniently know the position, the type and the like of the dangerous gas leakage, the emergency danger avoiding method when the dangerous gas leakage is quickly known by the crews is helped, and the crews are reminded to evacuate quickly.
Steps S102 to S106 as described above are repeatedly performed.
Example 3
Referring to fig. 3, a flow chart of the hazardous gas pipeline leakage monitoring method in another embodiment is shown.
As shown in fig. 3, based on the method shown in fig. 2, when the hazardous gas includes flammable and explosive gas, such as methane, ethane, acetylene, etc.; after the step S104, the method for monitoring a leakage of a hazardous gas pipeline further includes:
s105, the sub-control unit monitors whether each dangerous gas contains flammable and explosive gases or not according to the dangerous gas information, and if not, the sub-control unit executes the step S106; if yes, monitoring whether the gas concentration of each flammable and explosive gas is greater than a preset concentration blasting threshold value, and if not, executing the step S106; if so, the operation of the non-explosion-proof power equipment is closed.
The concentration explosion threshold is a preset concentration value of each flammable and explosive gas, corresponds to the type of each flammable and explosive gas, and is lower than the lowest explosion limit concentration value corresponding to each flammable and explosive gas.
Specifically, the sub-control unit monitors whether the dangerous gas contains flammable and explosive gas according to the type of the dangerous gas in the received dangerous gas information, and if not, executes step S106; if yes, monitoring the gas concentration of each flammable and explosive gas, and if not, executing the step S106 if the gas concentration is larger than the concentration blasting threshold value corresponding to each flammable and explosive gas type; if so, the sub-control unit sends a control signal to the leakage cabin, and non-explosion-proof power equipment connected with the sub-control unit is used for closing the operation of the non-explosion-proof power equipment; therefore, the device can prevent the accidents such as fire or explosion and the like caused by static electricity generated when non-explosion-proof power equipment runs when flammable and explosive gases are accumulated to reach a certain concentration, thereby better ensuring the safety of crews.
Further, the master control unit is connected with a starting device for monitoring each gas fire extinguishing system in the cabin; in step S106, the method further includes: after the master control unit makes the master alarm unit send out an alarm according to the received fault information, the master control unit opens the starting device of the gas fire extinguishing system corresponding to the type of the flammable and explosive gas according to the received fault information.
Wherein the gas fire suppression system includes, but is not limited to, a haloalkane fire suppression system, a carbon dioxide fire suppression system, and a heptafluoropropane fire suppression system; the starting device of the gas fire extinguishing system comprises a solenoid valve.
Specifically, the total control unit is according to receiving fault information, according to in the fault information combustible and explosive gas's type opens and corresponds with this combustible and explosive gas type gas fire extinguishing systems's starting drive, so that gaseous fire extinguishing systems to leak the cabin and spray fire control gas, with through diluting the combustible and explosive gas concentration in this leakage cabin to and the contact of separation combustible and explosive gas and air, further reduce combustible and explosive gas and take place the probability of conflagration and explosion, ensured crewman's safety.
In summary, according to the system and the method for monitoring leakage of a hazardous gas pipeline provided by the present invention, a monitoring unit is provided to obtain hazardous gas information in a monitoring cabin, a sub-control unit monitors the hazardous gas information, when a preset concentration threshold is exceeded, an alarm is given, an exhaust unit is started to exhaust, fault information is generated and sent to a main control unit, and the main control unit adjusts the working state of a device related to the hazardous gas pipeline according to the fault information, so as to reduce the concentration of the hazardous gas in the leakage cabin. By utilizing the system and the method for monitoring the leakage of the dangerous gas pipeline, provided by the invention, the concentration information of the dangerous gas can be conveniently and quickly acquired, and the running safety of the dangerous gas pipeline can be monitored in real time; when the dangerous gas leaks, crews can be timely informed to evacuate the leaked cabin of the dangerous gas at the first time, and other crews can be quickly reminded to carry out inspection, adjustment, maintenance, treatment and the like; meanwhile, the device is linked with equipment related to a dangerous gas pipeline in the ship body, an exhaust unit in the cabin and the like, so that when leakage is monitored, a gas source of the dangerous gas can be closed in time, and the dangerous gas in the pipeline is prevented from further leaking into the leaked cabin; in addition, when flammable and explosive gases are detected to exist in the dangerous gas, the non-explosion-proof power equipment in the leaked cabin is quickly closed, so that fire or explosion caused by static electricity is prevented, and the safety of crew is further guaranteed. Therefore, the system and the method for monitoring the leakage of the dangerous gas pipeline, provided by the invention, can realize automatic monitoring of the dangerous gas pipeline, can timely and quickly reduce the concentration of the dangerous gas in the cabin when the dangerous gas leaks, improve the safety of ship operation, help crews to find the leakage position in time, reduce the maintenance workload of the crews and greatly reduce the labor cost.
It should be noted that the system and method for monitoring leakage of a hazardous gas pipeline according to the present invention are applicable not only to ships but also to cabins, trains, buildings, etc. provided with hazardous gas pipelines.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (15)
1. The utility model provides a hazardous gas pipeline leakage monitoring system which characterized in that sets up in total monitoring space, be equipped with sub-monitoring space in the total monitoring space, the system includes:
the monitoring unit is arranged in each sub-monitoring space and used for acquiring the information of the hazardous gas in the sub-monitoring space; the dangerous gas information comprises various dangerous gas types and gas concentrations;
the sub-control units correspond to the sub-monitoring spaces one by one, and are connected with the main control unit; the single sub-control unit is connected with the monitoring unit and the sub-alarm unit in the corresponding sub-monitoring space, and is used for receiving the hazardous gas information sent by the monitoring unit and monitoring whether the gas concentration of each hazardous gas is greater than a preset concentration alarm threshold value; if yes, determining that the corresponding sub-monitoring space is a leakage space of the dangerous gas, enabling the sub-alarm unit to give an alarm, generating fault information, and sending the fault information to the main control unit; wherein the fault information includes the hazardous gas information and location information of the leak space;
and the master control unit is connected with the dangerous gas pipeline related devices and used for adjusting the working states of the dangerous gas pipeline related devices according to the received fault information so as to prevent the dangerous gas from entering the leakage space.
2. The hazardous gas pipeline leakage monitoring system of claim 1, wherein a single sub-control unit is connected to the exhaust unit in the corresponding sub-monitoring space, and is configured to exhaust the exhaust unit outwards when the sub-monitoring space is determined to be the leakage space.
3. The hazardous gas pipeline leakage monitoring system of claim 1, wherein the master control unit is connected to a master alarm unit in the master monitoring space, and is configured to cause the master alarm unit to issue an alarm according to the received fault information.
4. The hazardous gas pipeline leakage monitoring system of claim 1, wherein the general control unit, and the means for connecting the hazardous gas pipeline related devices are implemented by: and the master control unit is connected with a fan arranged in a dangerous gas pipeline and used for stopping the fan according to the received fault information.
5. The hazardous gas pipeline leakage monitoring system of claim 1, wherein the general control unit, and the means for connecting the hazardous gas pipeline related devices are implemented by: and the master control unit is connected with an electric isolation gate arranged in the dangerous gas pipeline and used for closing the electric isolation gate which is closest to the leakage space in the dangerous gas pipeline according to the received fault information.
6. The system for monitoring leakage of a hazardous gas pipeline according to claim 1, wherein the master control unit is connected to the alarm devices in the other spatial units except the sub-monitoring space in the master monitoring space, and is configured to make the alarm devices in the other spatial units send out an alarm according to the received fault information.
7. The system for monitoring and controlling leakage of a hazardous gas pipeline according to claim 1, wherein a single sub-control unit is connected to the corresponding non-explosion-proof power equipment in the sub-monitoring space, and is configured to shut down operation of the non-explosion-proof power equipment when the sub-control unit monitors that the hazardous gas type contains flammable and explosive gases according to the hazardous gas information, and the gas concentration of each flammable and explosive gas is greater than a preset concentration blasting threshold value.
8. The hazardous gas pipeline leakage monitoring system according to claim 7, wherein the master control unit is connected to the starting devices of the gas fire extinguishing systems in the sub-monitoring spaces, and is configured to open the starting devices of the gas fire extinguishing systems corresponding to the types of the flammable and explosive gases according to the received fault information.
9. A dangerous gas pipeline leakage monitoring method is characterized in that the method is applied to a dangerous gas pipeline leakage monitoring system comprising a monitoring unit, a sub-control unit and a main control unit; the system is arranged in a total monitoring space, and a sub-monitoring space is arranged in the total monitoring space; each monitoring unit is used for acquiring dangerous gas information in each sub-monitoring space; each sub-control unit corresponds to each sub-monitoring space one by one, and a single sub-control unit is connected with the monitoring units and the sub-alarm units in the corresponding sub-monitoring spaces; the main control unit is connected with each sub-control unit and connected with a dangerous gas pipeline related device; the method comprises the following steps:
the sub-control unit receives the hazardous gas information sent by the monitoring unit; the dangerous gas information comprises various dangerous gas types and gas concentrations;
the sub-control unit monitors whether the concentration of each dangerous gas is greater than a preset concentration alarm threshold value or not according to the dangerous gas information, and if not, the sub-control unit continues monitoring; if yes, judging the sub-monitoring space to be a leakage space, and enabling the sub-alarm unit to give out an alarm;
the sub-control unit generates fault information according to the dangerous gas information and the position information of the leakage space, and sends the fault information to a main control unit;
the master control unit adjusts the working state of the relevant devices of the hazardous gas pipeline according to the received fault information;
the above steps are repeated.
10. The hazardous gas pipeline leakage monitoring method of claim 9, wherein the master control unit is connected to a master alarm unit in the master monitoring space; the method further comprises the following steps: and the master control unit regulates the working state of the dangerous gas emission related device according to the received fault information, and simultaneously enables the master alarm unit to send out fault alarm according to the received fault information.
11. The method for monitoring leakage of a hazardous gas pipeline according to claim 9, wherein the main control unit is connected with sub-alarm units in other space units except the sub-monitoring space in the main monitoring space; the method further comprises the following steps: and when the master control unit adjusts the working state of the dangerous gas emission related device, the master control unit enables the sub-alarm units in the other space units to give an alarm according to the received fault information.
12. The hazardous gas pipeline leakage monitoring method according to claim 10 or 11, wherein a single sub-control unit is connected to non-explosion-proof power equipment in the corresponding sub-monitoring space; the method further comprises the following steps:
and after the sub-monitoring space is judged to be a leakage space and the sub-alarm unit gives an alarm, the sub-control unit monitors whether the dangerous gas information contains flammable and explosive gas types, if so, monitors whether the gas concentration corresponding to each flammable and explosive gas type is greater than a preset concentration burning and explosion threshold value, and if so, closes the operation of non-explosion-proof power equipment in the sub-monitoring space.
13. The hazardous gas pipeline leakage monitoring method of claim 12, wherein the master control unit is connected with the starting devices of the gas fire extinguishing systems in the sub-monitoring spaces; the method further comprises the following steps: and the master control unit opens a starting device of the gas fire extinguishing system corresponding to the type of the flammable and explosive gas according to the received fault information.
14. The method for monitoring leakage of a hazardous gas pipeline according to claim 9, wherein the implementation manner of the general control unit adjusting the working state of the hazardous gas emission related device according to the received fault information comprises: and the master control unit is connected with an exhaust fan of the dangerous gas pipeline and stops the exhaust fan according to the received fault information.
15. The method for monitoring leakage of a hazardous gas pipeline according to claim 10, wherein the implementation manner of the general control unit adjusting the working state of the hazardous gas discharge-related device according to the received fault information further comprises: and the master control unit is connected with an electric isolation gate of the dangerous gas pipeline, and closes the electric isolation gate which is closest to the sub-monitoring space in the dangerous gas pipeline according to the received fault information.
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