CN110442091A - A kind of chemical plant electronization emergency preplan and accident handling householder method - Google Patents
A kind of chemical plant electronization emergency preplan and accident handling householder method Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 description 3
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Abstract
The present invention relates to accidents to manage technical field, more particularly to a kind of chemical plant electronization emergency preplan and accident handling householder method, including prediction scheme object information, trigger condition, grade, promotion condition, classification prediction scheme content and condition subsequent, the prediction scheme object information includes object oriented, object type and subject area, trigger condition is the condition that monitoring data need to meet when triggering prediction scheme, promotion condition is the condition that monitoring data need to meet when prediction scheme upgrades, and condition subsequent is the condition that monitoring data need to meet when prediction scheme releases.Accident handling householder method includes: to derive and update associated variable；Show related prediction scheme；Judge whether prediction scheme upgrades or release.Substantial effect of the invention is: accident handling content standardization format is established, the sharing and accumulation of accident handling experience are promoted；The response speed for improving accident tracking, provides for accident handling and timely refers to.
Description
Technical field
The present invention relates to accidents to manage technical field, and in particular to a kind of chemical plant electronization emergency preplan and accident handling
Householder method.
Background technique
Many products in national economy, it is all related with chemical industry.Thus chemical industry is a national national warp
Indispensable important component in Ji, development is to walk sustainable development path to have human economy, social development
Important realistic meaning.Chemical industry includes chemical industry, oil refining, metallurgy, the energy, light industry etc., is the basic industry of social economy.By
, complex process of a great variety in chemical plant, product multiplicity, raw material and intermediate product used in production, type is more, quantity
Greatly, inflammable and explosive, toxicity is high.Meanwhile have in links such as processing, storage, use and offal treatments can for chemical products
A large amount of noxious materials can be generated and influence ecological environment, jeopardize human health.Therefore, the safety in production in chemical plant for it is economical,
Social stability and environment maintenance have important practical significance.Just because of chemical plant is of a great variety, material variety is more, causing
The security management and control of factory is difficult to form general character.Currently, still respectively formulating the stage of emergency preplan using chemical plant.Due to chemical plant
Human resources and disposition limited experience to accident, keep the emergency preplan in chemical plant not fine enough, only generally formulate
The disposition of accident.When practical progress accident handling, the experience of accident handling operator on duty is still relied primarily on.Meanwhile in this way
Situation under, the emergency disposal experience in chemical plant can not effectively be shared, hinder the accumulation of accident handling experience, and limitation is got over
Therefore the promotion of intervention level.
With the development of computer science and technology, there is the Dynamic contingency deduction system based on analogue simulation, for auxiliary
Help accident handling.Such as Chinese patent CN103927410B, publication date on May 15th, 2018, a kind of chemical accident emergency preplan is dynamic
State deduces simulation system comprising: it is dynamic to be used to provide building emergency preplan for the simulation system for Base data platform module
The geographic information data of threedimensional model that state is deduced, place basic information data, accident generating process numerical simulation data；Three
Prediction scheme editor module is tieed up, the various information datas provided according to Base data platform module are pre- by various emergency existing for enterprise
Case is associated with each information of three-dimensional scenic, realizes that petrochemical enterprise edits its chemical accident emergency preplan, makes to answer
Anxious prediction scheme compiles three dimensional form；Three-dimensional digital prediction scheme console module, the emergency of the three dimensional form for carrying out editor's completion
The dynamic of prediction scheme, which is deduced, to be shown.It can be overcome using this system using many deficiencies brought by paper and electronic document, be allowed
Administrative staff and employee to many accidents that petrochemical enterprise occurs in practical work process have comprehensively, it is specific, be directed to
The strong understanding of property.
But the technical solution has the following deficiencies: one, needing to take a significant amount of time the geography information number of building threedimensional model
According to cost input is big；Two, the numerical simulation data of accident generating process is relied on, these analogue datas are not readily available；Three,
The dynamic of the emergency preplan of three dimensional form deduces process complexity, needs to consume great amount of hardware resources, and operation time is long, it is difficult to
It is competent at the time response requirement in accident handling.
Summary of the invention
The technical problem to be solved by the present invention is chemical plant accident handling side can effectively be assisted by lacking response quickly at present
The technical issues of case.Propose a kind of simple building, the chemical plant electronization emergency preplan of response quickly and accident handling auxiliary
Method.
In order to solve the above technical problems, the technical solution used in the present invention are as follows: a kind of chemical plant electronization emergency preplan,
It is stored in server, server and chemical plant DCS are communicated to connect, including prediction scheme object information, trigger condition, grade, upgrading
Condition, classification prediction scheme content and condition subsequent, the prediction scheme object information include object oriented, object type and target area
Domain, trigger condition are the condition that monitoring data need to meet when triggering prediction scheme, and promotion condition is that monitoring data need to expire when prediction scheme upgrades
The condition of foot, condition subsequent are the condition that monitoring data need to meet when prediction scheme releases.It is chemical plant by identification of accidental events method migration
DCS data establish accident handling content standardization format, promote the sharing and accumulation of accident handling experience, enable prediction scheme root
According to chemical plant DCS data automatic trigger, the speed and accuracy of prediction scheme triggering are improved.
Preferably, the prediction scheme table further includes associated variable and to be associated with trigger condition, associated variable include prediction scheme object
Temperature, hazardous gas type and the hazardous gas concentration of region.Associated variable reflects under the influence of safety accident, often
The temperature and hazardous gas situation of the corresponding prediction scheme subject area of a prediction scheme table, play the work of tracking safety accident impact development
With providing important references for accident handling.
Preferably, the associated variable further includes wind direction and wind speed.Hair of the wind direction and wind speed of the scene of the accident to accident
Exhibition has significant impact, shows the wind direction and wind of corresponding region while showing prediction scheme table by monitoring wind direction and wind speed
Speed enables accident handling operator on duty more fully to grasp accident situation, is convenient for accident handling.
Preferably, the prediction scheme table further includes deducing time T and extension associated variable, and when there are safety accident, clothes
Device of being engaged in real-time monitoring data deduces the grade of prediction scheme table and the value of associated variable after T time, the associated variable after T time
It is worth the value as extension associated variable.After safety accident generation, Disposal Measures in place before, have one section of empty window phase T, this period
Accident can sustainable development variation.Thus the range and intensity of accident after sky window phase T are predicted from the beginning, accident can be made
It disposes more targeted.
A kind of chemical plant accident handling householder method, based on electronic emergency preplan as the aforementioned, comprising the following steps:
A11) safety accident if it exists includes fire behavior, then derives and update the temperature value of the associated variable of each prediction scheme table, if it exists
Safety accident include hazardous gas spillage, then derive and update the hazardous gas concentration of the associated variable of each prediction scheme table, close
Joining the hazardous gas type in variable is corresponding leakage type；A12 the prediction scheme being triggered, Yi Jiguan) are shown by display device
Connection variable changes several maximum prediction schemes, for assisting accident handling；A13 monitoring data) is read, if meeting prediction scheme liter
Grade condition then upgrades prediction scheme, releases prediction scheme if meeting condition subsequent；A14 step A11 to A13) is repeated, until pre-
Case releases or manually closes prediction scheme.The temperature of relevant device and type, the concentration of equipment region hazardous gas are calculated, it can
For accident handling decision, important reference is provided, accident handling decision is made to have more specific aim and safer.
Preferably, also execute the following contents: safety accident if it exists includes fire behavior in step A11, T time is derived
The temperature value of the associated variable of each prediction scheme table afterwards, and the temperature value of extension associated variable is updated, safety accident packet if it exists
Hazardous gas spillage is included, the hazardous gas concentration of the associated variable of each prediction scheme table after derivation T time, and update extension association and become
Hazardous gas type in the hazardous gas concentration of amount, associated variable and extension associated variable is corresponding leakage type；In
Show that extension associated variable changes several maximum prediction schemes in step A12.It, can by showing the maximum prediction scheme table of variable quantity
To be associated with harm caused by disposal personnel displaying accident, after display T time, the associated variable of the maximum prediction scheme table of variable quantity
Value handles disposal personnel targetedly, auxiliary control the case where capable of spreading for accident after disposal personnel displaying time T
Accident development, reduces causality loss.
Preferably, the method for deriving the temperature value of the associated variable of each prediction scheme table are as follows: if the prediction scheme object of prediction scheme table
With the isolation of the airflow channel in fire behavior region or the gas-flow resistance of airflow channel it is greater than given threshold, then the associated variable of prediction scheme table
Temperature value remains unchanged；If the prediction scheme object of prediction scheme table and the airflow channel resistance in fire behavior region are less than or equal to given threshold,
Then judge whether airflow channel region is calm, if calm, the temperature of the associated variable of prediction scheme table is obtained by air heat conduction model
Angle value judges the prediction scheme object of prediction scheme table whether in lower air port, if in lower air port, away from fire if there is wind in airflow channel region
Feelings time of origin t≤Ds/vwWhen interior, the temperature value of the associated variable of prediction scheme table is obtained by air heat conduction model, wherein DsIt is pre-
The shortest distance of case subject area and fire behavior region, vwFor wind speed, away from fire behavior time of origin t > Ds/vwWhen interior, the pass of prediction scheme table
The temperature value for joining variable is Cm,
Cm=β Ct, β ∈ [0.6,1]
CtFor the temperature value at the edge in fire behavior region, β is regulation coefficient, and prediction scheme subject area and fire behavior region distance are smaller, or
The airflow channel resistance in prediction scheme subject area and fire behavior region is got over hour, and β takes greater value, if the prediction scheme object of prediction scheme table is in the wind
Mouthful, then the temperature value of the associated variable of prediction scheme table is obtained by air heat conduction model.
Preferably, the method for deriving the hazardous gas concentration of the associated variable of each prediction scheme table are as follows: if prediction scheme table is pre-
Case object and the isolation of the airflow channel in hazardous gas spillage region or the gas-flow resistance of airflow channel are greater than given threshold, then prediction scheme
The hazardous gas concentration of the associated variable of table remains unchanged；If the air-flow of the prediction scheme object of prediction scheme table and hazardous gas spillage region
Channel resistance is less than or equal to given threshold, then eight orientation is evenly dividing in the horizontal direction centered on source of leaks, along vertical
Direction divides upper and lower two orientation and judges dangerous gas according to the workshop in chemical plant layout, hazardous gas density, wind direction and wind speed
Flow proportional δ of the body in 16 orientationr, r ∈ [1,16], then the hazardous gas concentration Q of the associated variable of prediction scheme tabley=δu·
Q, wherein δuThe prediction scheme subject area of prediction scheme table is indicated in the orientation of source of leaks, Q is the hazardous gas concentration at source of leaks.
Preferably, flow proportional δ of the hazardous gas in 16 orientationrMethod are as follows: determine the flow of horizontal direction
Than: it is laid out according to the workshop in chemical plant, selectes some airflow channel as reference channel, and then determine remaining horizontal seven orientation
Airflow channel resistance with respect to reference channel resistance ratios, if some direction airless channel, airflow channel resistance ratios be nothing
Poor big, using the inverse of the resistance ratios in each direction as weight, if leakage region has wind, several orientation of lower wind direction are by power
It reassigns and determines flow proportional, remaining orientation flow proportional is 0, if leaking area is calm, eight orientation in horizontal direction are pressed
Weight distribution determines flow proportional；Determine the flow-rate ratio of vertical direction: the gas if hazardous gas is attached most importance to, the flow proportional of upper position
It is 0, the flow proportional in eight directions in lower orientation is equal to flow proportional determined by horizontal direction, if hazardous gas density and sky
Gas phase is worked as, then the flow proportional in upper and lower orientation is respectively equal to the half of flow proportional determined by horizontal direction, if hazardous gas
Density is less than atmospheric density, then descending the flow proportional in orientation is 0, and the flow proportional in eight directions of upper position is equal to horizontal direction
Identified flow proportional.
Preferably, the temperature in associated variableWherein F0For fire behavior central area temperature, DsFor prediction scheme pair
As region is at a distance from fire behavior center；The acquisition methods of hazardous gas concentration P in associated variable are as follows: if source of leakage is indoors,
Then judge that the prediction scheme object of prediction scheme table is isolated with whether source of leakage has, if isolation, P=0, if having diffusion admittance,N is the total quantity of source of leakage diffusion admittance, and Q is source of leakage leakage rate；If source of leakage judges prediction scheme table in outdoor
Prediction scheme object whether source of leakage lower wind direction, if so, use Gaussian plume model calculate associated variable in dangerous gas
Bulk concentration P, conversely, P=0.
Substantial effect of the invention is: accident handling content standardization format is established by the emergency preplan of electronization,
Promote the sharing and accumulation of accident handling experience；During accident handling, only executes comparing and a small amount of operation can
The trace simulation for realizing the state of affairs improves the response speed of accident tracking, provides for accident handling and timely refer to.
Detailed description of the invention
Fig. 1 is system structure diagram applied by embodiment one.
Fig. 2 is one accident handling aided process flow sheet block diagram of embodiment.
Fig. 3 is one associated variable temperature value derivation method flow diagram of embodiment.
Fig. 4 is one associated variable hazardous gas concentration derivation method flow diagram of embodiment.
Fig. 5 is that embodiment one assists fire behavior to dispose schematic diagram.
Fig. 6 is that embodiment one assists hazardous gas spillage to dispose schematic diagram.
Wherein: 100, chemical plant DCS, 101, air accumulator two, 102, appendix six, 103, air accumulator four, 200, prediction scheme table
Input system, 201, two fire behavior prediction scheme table of air accumulator, 202, the leakage prediction scheme table of appendix six, 203, the leakage prediction scheme of air accumulator four
Table, 204, the leakage prediction scheme table of office three, 300, server, 400, display unit.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, a specific embodiment of the invention is further described in detail.
Embodiment one:
A kind of chemical plant electronization emergency preplan by 200 typing of prediction scheme table input system and is stored in server 300, clothes
Business device 300 and chemical plant DCS-100 are communicated to connect, and display unit 400 is connect with server 300, as shown in Figure 1, the present embodiment
Including prediction scheme object information, trigger condition, grade, promotion condition, classification prediction scheme content, condition subsequent, deduce time T, association
Variable, association trigger condition and extension associated variable, the prediction scheme object information include object oriented, object type and object
Region, trigger condition are the condition that monitoring data need to meet when triggering prediction scheme, and promotion condition is that monitoring data needs when prediction scheme upgrades
The condition of satisfaction, condition subsequent are the condition that monitoring data need to meet when prediction scheme releases.Associated variable includes prediction scheme object place
Temperature, hazardous gas type, hazardous gas concentration, wind direction and the wind speed in region.When there are safety accident, server 300 with
Real-time monitoring data deduces the grade of prediction scheme table and the value of associated variable after T time, the value conduct of the associated variable after T time
The value of extension associated variable.Display unit 400 includes that disposition display unit 400, alarm indication unit 400 and execution display are single
Member 400, disposition display unit 400 for show the prediction scheme table being triggered to accident handling operator on duty, alarm indication for
Upper management department or government's part alarm are used, and are executed display unit 400 and are shown to scene of the accident employee and need to be implemented
Prediction scheme content.
As shown in table 1, prediction scheme table describes entitled air accumulator 2 101, and type is vertical gas storage tank, and regional location is west
Two tank of North, high span Stall to three buildings, one store prediction scheme content of the air accumulator of fuel gas in situation on fire.
Level-one fire behavior prediction scheme content is to carry fire extinguishing appliance by fire extinguishing group on duty, is put out initial stage, stable fire, and gas source valve is closed；
The trigger condition of level-one is that corresponding position cigarette sense sensor-triggered is alarmed or tank surface measures temperature C > 160 DEG C and pressure inside the tank has
Abnormal loss.Since the prediction scheme indicator is to fire behavior, thus hazardous gas type: nothing, hazardous gas type is main in the present embodiment
Refer to that toxic gas, toxic combustible gas are treated as toxic gas before burning, treated after burning as fire behavior.When association triggers
When temperature in condition reaches 1200 DEG C, i.e., air accumulator 2 101 itself is intact, but since there are fire behaviors for neighbouring gas tank body, leads
The pot temperature of air accumulator 2 101 is caused to reach 1200 DEG C, high temperature lower tank material deforms, and tank body generates crack, and gas is let out
Leakage, and then air accumulator 2 101 is caused to generate fire behavior, to trigger the fire behavior prediction scheme table of air accumulator 2 101.
1 air accumulator of table, two fire behavior prediction scheme table 201
Safety accident packet if it exists a kind of chemical plant accident handling householder method, as shown in Figure 2, comprising the following steps: A11)
Fire behavior is included, then derives and update the temperature value of the associated variable of each prediction scheme table, derives the association change of each prediction scheme table after T time
The temperature value of amount, and the temperature value of extension associated variable is updated, safety accident if it exists includes hazardous gas spillage, then derives
And the hazardous gas concentration of the associated variable of each prediction scheme table is updated, the danger of the associated variable of each prediction scheme table after derivation T time
Dangerous gas concentration, and the hazardous gas concentration of extension associated variable is updated, the danger in associated variable and extension associated variable
Gaseous species are corresponding leakage type；A12) show that the prediction scheme being triggered, associated variable change most by display device
Big several prediction schemes and display extension associated variable change several maximum prediction schemes, for assisting accident handling；A13)
Monitoring data is read, prediction scheme is upgraded if meeting prediction scheme promotion condition, releases prediction scheme if meeting condition subsequent；A14) weight
Step A11 to A13 is executed again, until prediction scheme releases or manually close prediction scheme.
The derivation of the temperature value of associated variable is there are many mode, limit element artificial module in the prior art, heat transfer mould
The temperature value that type and thermal convection model may be incorporated for the present embodiment derives.But the present embodiment provides a kind of associated variable temperature
It is worth derivation mode.The advantages of which has speed fast, and derivation result necessarily restrains, is suitble to need in accident handling
Quickly provide the situation of reference result.As shown in figure 3, the temperature derivation method specifically: if the prediction scheme object of prediction scheme table and fire
The airflow channel in feelings region completely cuts off or the gas-flow resistance of airflow channel is greater than given threshold, then the temperature of the associated variable of prediction scheme table
Value remains unchanged.The resistance of airflow channel is tested by air-flow or flow dynamics analysis obtains, due to only needing to obtain channel
Between comparative resistance result.The present embodiment is used using the averga cross section area in channel and channel number of turns as determining air-flow
The foundation of channel resistance.If airflow channel angle of turn is accumulative more than 540 degree, judge that airflow channel resistance is greater than setting threshold
Value.The area of section of airflow channel be S, using fire behavior closest approach as the centre of sphere, with fire behavior closest approach reach airflow channel entrance away from
Surface area from the spherical shape for radius is SVIf S/SV< 0.1 then judges that airflow channel resistance is greater than given threshold.
If the prediction scheme object of prediction scheme table and the airflow channel resistance in fire behavior region are less than or equal to given threshold.Then judge gas
Whether circulation road region is calm, if calm, the temperature value of the associated variable of prediction scheme table is obtained by air heat conduction model, if gas
There is wind in circulation road region, then judges the prediction scheme object of prediction scheme table whether in lower air port, if in lower air port, away from fire behavior time of origin
t≤Ds/vwWhen interior, the temperature value of the associated variable of prediction scheme table is obtained by air heat conduction model, wherein DsFor prediction scheme subject area
With the shortest distance in fire behavior region, vwFor wind speed, away from fire behavior time of origin t > Ds/vwWhen interior, the temperature of the associated variable of prediction scheme table
Angle value
Cm=β Ct, β ∈ [0.6,1]
CtFor the temperature value at the edge in fire behavior region, β is regulation coefficient, and prediction scheme subject area and fire behavior region distance are smaller, or
The airflow channel resistance in prediction scheme subject area and fire behavior region is got over hour, and β takes bigger value, if the prediction scheme object of prediction scheme table is in the wind
Mouthful, then the temperature value of the associated variable of prediction scheme table is obtained by air heat conduction model.
Flow dynamics analysis and stream in the prior art can be used in the derivation method of the hazardous gas concentration of associated variable
Body finite element analysis, but time-consuming for flow dynamics analysis and finite element analysis, and result not necessarily restrains.Thus the present embodiment
With the following method, as shown in figure 4, this method specifically includes: if the prediction scheme object of prediction scheme table and hazardous gas spillage region
Airflow channel isolation or the gas-flow resistance of airflow channel are greater than given threshold, then the hazardous gas concentration of the associated variable of prediction scheme table
It remains unchanged；If the prediction scheme object of prediction scheme table and the airflow channel resistance in hazardous gas spillage region are less than or equal to setting threshold
Value, then be evenly dividing eight orientation in the horizontal direction centered on source of leaks, vertically divide upper and lower two orientation, altogether
16 orientation, specifically: Shang Xi, upper northwest, Shang Bei, upper northeast, Shang Dong, the upper southeast, Shang Nan, upper southwest, Shang Xi, upper west
North, Shang Bei, upper northeast, Shang Dong, the upper southeast, Shang Nan and upper southwest, below source of leaks and line and horizontal angle are greater than 5
Degree is lower section, remaining is accordingly to be regarded as top.According to the workshop in chemical plant layout, hazardous gas density, wind direction and wind speed, danger is judged
Flow proportional δ of the gas in 16 orientationr, r ∈ [1,16], flow proportional δ of the hazardous gas in 16 orientationrMethod
Are as follows: it determines the flow-rate ratio of horizontal direction: being laid out according to the workshop in chemical plant, select some airflow channel as reference channel, into
And determine the resistance ratios of the airflow channel resistance with respect to reference channel in remaining horizontal seven orientation, if some direction airless is logical
Road, then airflow channel resistance ratios are infinity, using the inverse of the resistance ratios in each direction as weight, if leakage region has wind,
Several orientation of wind direction are then descended to determine flow proportional by weight distribution, remaining orientation flow proportional is 0, if leaking area is calm,
Then eight orientation in horizontal direction determine flow proportional by weight distribution；Determine the flow-rate ratio of vertical direction: if hazardous gas
Attach most importance to gas, then the flow proportional of upper position is 0, and the flow proportional in eight directions in lower orientation is equal to stream determined by horizontal direction
Amount ratio, if hazardous gas density is suitable with air, the flow proportional in upper and lower orientation is respectively equal to determined by horizontal direction
The half of flow proportional, if hazardous gas density is less than atmospheric density, the flow proportional in lower orientation is 0, eight of upper position
The flow proportional in direction is equal to flow proportional determined by horizontal direction.Finally, the hazardous gas of the associated variable of prediction scheme table is dense
Spend Qy=δuQ, wherein δuThe prediction scheme subject area of prediction scheme table is indicated in the orientation of source of leaks, Q is the hazardous gas at source of leaks
Concentration.
As shown in figure 5, when the present embodiment meets with air accumulator 2 101 fire behavior occurs, the operation of the present embodiment and to accident
Auxiliary disposition specifically:
When fire behavior occurs for air accumulator 2 101, two fire behavior prediction scheme table 201 of air accumulator is triggered, and prediction scheme table grade is one at this time, gas storage
The pressure inside the tank decline of tank 2 101 is unobvious, indicates that flame is smaller, and prediction scheme content is to send team on duty, is carried out using fire extinguisher
Manual extinguishing puts out initial stage fire behavior, if making good progress, after fire extinguishment, monitors that tank surface temperature drops to preset value
Hereinafter, prediction scheme releases.
It is opposite, if two fire behavior prediction scheme table of air accumulator, 201 grade be for the moment, team on duty go on the road of fire extinguishing or
When putting out a fire, the downward trend that the pressure inside the tank of air accumulator 2 101 is gradually accelerated is monitored, it is more than default for leading to the pressure loss
Value, prediction scheme table grade upgrades to second level at this time, at this point, prompt accident handling operator on duty, it is small should to recall rapidly fire extinguishing on duty
Team needs to carry out fire extinguishing disposition using fire fighting truck.Meanwhile the present embodiment finds appendix 6 102 by the calculating of associated variable
The temperature of region is more than given threshold, i.e., is located at lower air port after appendix 6 102, causes appendix 6 102 by high temperature.
High temperature makes 6 102 side shape of appendix and leaks, thus by association triggering, so that appendix six leaks prediction scheme table 202302
It is triggered, prompts accident handling operator on duty, the input valve for closing appendix 6 102 should be operated, while notifying fire fighting truck
Pay attention to that appendix 6 102 is put out a fire or cooled down when situation allows.If fire fighting truck is put out a fire successfully, appendix 6 102
Cooling processing has been carried out, then when monitoring that tank surface temperature drops to preset value or less, has released prediction scheme.
Opposite, if server 300 finds the gas pressure in air accumulator 2 101 in fast in fire fighting truck fire extinguishing procedure
Prediction scheme table grade is then upgraded to three-level by fast downward trend, it is desirable that plant area's near zone stops production, and reports higher level department or government
Department prompts accident handling operator on duty, site personnel should be notified to evacuate.Fire fighting truck should be noted that the observation intensity of a fire, if can not take
Must put out a fire effect, then fire fighting truck should be moved to the position with 2 101 distance of air accumulator for safe distance.And higher level is requested to send
Larger fire-extinguishing apparatus is supported.
As shown in fig. 6, when the present embodiment meets with toxic but non-flammable the gas of the gas again leakage stored in air accumulator 4 103
When, in calm situation, the operation of the present embodiment and the auxiliary to accident specifically:
The position of air accumulator 4 103 is in North, and vertical span is Stall to three buildings, and 4 103 top plug hatch of air accumulator occurs
Leakage, triggering air accumulator four leak prediction scheme table 203, and prediction scheme table grade is level-one, prompt accident handling operator on duty, close upstream
After valve, disposition squad on duty is sent to be handled, disposition squad carries out gas precautions.By preceding method, danger can determine
The airflow channel of gas, i.e. leakage path, for through the plant area channel in southwest and northeastward, gas flow is divided into two sides
To respectively southwestward and northeastward, gas flow are the half of leakage rate.Server 300 is obtained by associated variable
The hazardous gas concentration for obtaining three region of office is more than threshold value, and triggering office three leaks prediction scheme table 304, accident handling value
Class personnel should notify the personnel in office three to withdraw.
Meanwhile by the pressure inside the tank of air accumulator 4 103, leakage total amount is inferred, it is aerial full according to hazardous gas
And concentration, it is inferred to leak range, in a bit of time, so that it may the rate of gas Release and dispersion is inferred to, thus leaking
When occurring 1~2 minute, so that it may calculate after ten minutes, gas leaks covered region.If calculating gained after ten minutes,
Gas leakage overlay area is not covered with three region of office, then when leakage occurs 1~2 minute, it will be able to notify
Personnel in office three have at least eight minutes departure times, avoid the personnel in office three from occurring flurried, cause not
The loss that should occur.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (9)
1. a kind of chemical plant electronization emergency preplan, is stored in server, server and chemical plant DCS are communicated to connect, special
Sign is,
Including prediction scheme object information, trigger condition, grade, promotion condition, classification prediction scheme content and condition subsequent, the prediction scheme pair
Image information includes object oriented, object type and subject area, and monitoring data need to meet when trigger condition triggers prediction scheme
Condition, promotion condition are the condition that monitoring data need to meet when prediction scheme upgrades, and condition subsequent is that monitoring data needs when prediction scheme releases
The condition of satisfaction.
2. a kind of chemical plant electronization emergency preplan according to claim 1, which is characterized in that
The prediction scheme table further includes associated variable and to be associated with trigger condition, associated variable include the temperature of prediction scheme object region
Degree, hazardous gas type and hazardous gas concentration.
3. a kind of chemical plant electronization emergency preplan according to claim 2, which is characterized in that
The associated variable further includes wind direction and wind speed.
4. a kind of chemical plant electronization emergency preplan according to claim 2 or 3, which is characterized in that
The prediction scheme table further includes deducing time T and extension associated variable, and when there are safety accident, server is to monitor in real time
Data deduce the grade of prediction scheme table and the value of associated variable after T time, and the value of the associated variable after T time is as association of delaying
The value of variable.
5. a kind of chemical plant accident handling householder method, based on electronic emergency preplan as claimed in claim 4, feature exists
In, comprising the following steps:
A11) safety accident if it exists includes fire behavior, then derives and update the temperature value of the associated variable of each prediction scheme table, if
Existing safety accident includes hazardous gas spillage, then the hazardous gas for deriving and updating the associated variable of each prediction scheme table is dense
It spends, the hazardous gas type in associated variable is corresponding leakage type；
A12 it) shows that the prediction scheme being triggered and associated variable change several maximum prediction schemes by display device, uses
In auxiliary accident handling；
A13 monitoring data) is read, is upgraded prediction scheme if meeting prediction scheme promotion condition, if meeting condition subsequent for prediction scheme solution
It removes；
A14 step A11 to A13) is repeated, until prediction scheme releases or manually close prediction scheme.
6. a kind of chemical plant accident handling householder method according to claim 5, which is characterized in that
In step A11, also execute the following contents: safety accident if it exists includes fire behavior, each prediction scheme table after derivation T time
The temperature value of associated variable, and the temperature value of extension associated variable is updated, safety accident if it exists includes hazardous gas spillage,
The hazardous gas concentration of the associated variable of each prediction scheme table after derivation T time, and the hazardous gas for updating extension associated variable is dense
It spends, the hazardous gas type in associated variable and extension associated variable is corresponding leakage type；
Show that extension associated variable changes several maximum prediction schemes in step A12.
7. a kind of chemical plant accident handling householder method according to claim 5 or 6, which is characterized in that
The method for deriving the temperature value of the associated variable of each prediction scheme table are as follows:
If the prediction scheme object of prediction scheme table is greater than setting threshold with the isolation of the airflow channel in fire behavior region or the gas-flow resistance of airflow channel
Value, then the temperature value of the associated variable of prediction scheme table remains unchanged；
If the prediction scheme object of prediction scheme table and the airflow channel resistance in fire behavior region are less than or equal to given threshold, judge that air-flow is logical
Whether road region is calm, if calm, the temperature value of the associated variable of prediction scheme table is obtained by air heat conduction model, if air-flow is logical
There is wind in road region, then judge the prediction scheme object of prediction scheme table whether in lower air port, if in lower air port, away from fire behavior time of origin t≤
Ds/vwWhen interior, the temperature value of the associated variable of prediction scheme table is obtained by air heat conduction model, wherein DsFor prediction scheme subject area with
The shortest distance in fire behavior region, vwFor wind speed, away from fire behavior time of origin t > Ds/vwWhen interior, the temperature of the associated variable of prediction scheme table
Value is Cm, Cm=β Ct, β ∈ [0.6,1]
CtFor the temperature value at the edge in fire behavior region, β is regulation coefficient, and prediction scheme subject area and fire behavior region distance are smaller, or pre-
The airflow channel resistance in case subject area and fire behavior region is got over hour, and β takes greater value, if the prediction scheme object of prediction scheme table is in the wind
Mouthful, then the temperature value of the associated variable of prediction scheme table is obtained by air heat conduction model.
8. a kind of chemical plant accident handling householder method according to claim 5 or 6, which is characterized in that
The method for deriving the hazardous gas concentration of the associated variable of each prediction scheme table are as follows:
If the prediction scheme object of prediction scheme table and the airflow channel isolation or the gas-flow resistance of airflow channel in hazardous gas spillage region are big
In given threshold, then the hazardous gas concentration of the associated variable of prediction scheme table remains unchanged；
If the prediction scheme object of prediction scheme table and the airflow channel resistance in hazardous gas spillage region are less than or equal to given threshold, with
Eight orientation are evenly dividing centered on source of leaks in the horizontal direction, upper and lower two orientation are vertically divided, according to chemical plant
Workshop layout, hazardous gas density, wind direction and wind speed, judge hazardous gas in the flow proportional δ in 16 orientationr, r ∈
[1,16], then the hazardous gas concentration Q of the associated variable of prediction scheme tabley=δuQ, wherein δuIndicate the prediction scheme target area of prediction scheme table
In the orientation of source of leaks, Q is the hazardous gas concentration at source of leaks in domain.
9. a kind of chemical plant accident handling householder method according to claim 8, which is characterized in that
Flow proportional δ of the hazardous gas in 16 orientationrMethod are as follows:
It determines the flow-rate ratio of horizontal direction: being laid out according to the workshop in chemical plant, select some airflow channel as reference channel, into
And determine the resistance ratios of the airflow channel resistance with respect to reference channel in remaining horizontal seven orientation, if some direction airless is logical
Road, then airflow channel resistance ratios are infinity, using the inverse of the resistance ratios in each direction as weight, if leakage region has wind,
Several orientation of wind direction are then descended to determine flow proportional by weight distribution, remaining orientation flow proportional is 0, if leaking area is calm,
Then eight orientation in horizontal direction determine flow proportional by weight distribution；
Determine the flow-rate ratio of vertical direction: the gas if hazardous gas is attached most importance to, the flow proportional of upper position are 0, eight of lower orientation
The flow proportional in direction is equal to flow proportional determined by horizontal direction, if hazardous gas density is suitable with air, upper and lower
The flow proportional of position is respectively equal to the half of flow proportional determined by horizontal direction, if hazardous gas density is close less than air
Degree, then descending the flow proportional in orientation is 0, and the flow proportional in eight directions of upper position is equal to flow-rate ratio determined by horizontal direction
Example.
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