CN110452074B - Automatic control system for production of emulsified ammonium nitrate fuel oil explosive - Google Patents
Automatic control system for production of emulsified ammonium nitrate fuel oil explosive Download PDFInfo
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- CN110452074B CN110452074B CN201910730511.1A CN201910730511A CN110452074B CN 110452074 B CN110452074 B CN 110452074B CN 201910730511 A CN201910730511 A CN 201910730511A CN 110452074 B CN110452074 B CN 110452074B
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/28—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
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Abstract
The invention relates to an automatic control system for production of an emulsified ammonium nitrate fuel oil explosive. A automatic control for emulsifying ammonium nitrate fuel oil explosive automatic production line, emulsifying ammonium nitrate fuel oil explosive automatic production line includes explosive preparation subassembly, package assembly, pile up neatly subassembly, the assembly vehicle subassembly that arranges in proper order according to emulsifying ammonium nitrate fuel oil explosive production order, automatic control system includes: the device comprises a porous granular ammonium nitrate unpacking control module, a material level detection control module, a motor control module, a material bag spacing control module and an online medicine material quantity control module. The invention realizes continuous automatic safety production, reduces labor intensity, realizes little unmanned, and particularly realizes continuous automatic metering feeding, continuous automatic mixing, continuous automatic packing and large-package automatic stacking loading, full-line intelligent linkage and safety interlocking protection; the effectual realization of material package interval control is prevented sympathetic detonation function, has reduced the possibility of exploding in the production process, has further promoted the security of production line.
Description
Technical Field
The invention belongs to the field of production of emulsion ammonium nitrate fuel oil explosives, and particularly relates to an automatic control system for production of emulsion ammonium nitrate fuel oil explosives.
Background
An emulsified granular ammonium nitrate fuel oil explosive (also called heavy ammonium nitrate fuel oil explosive) is an industrial explosive formed by mixing an emulsified explosive matrix and a porous granular ammonium nitrate fuel oil explosive, and comprises the following components in percentage by weight: the porous granular ammonium nitrate and the light diesel oil are mixed in proportion to form the porous granular ammonium nitrate fuel oil explosive, and the porous granular ammonium nitrate fuel oil explosive and the emulsion matrix are mixed in different proportions to form emulsified granular ammonium nitrate fuel oil explosives with different performances. The explosive has the advantages of intrinsic safety, high density, high explosion energy, low cost and the like, and has certain water resistance; the explosive can flexibly adjust the proportion according to engineering requirements, has the technical and economic characteristics of both emulsion explosive and ammonium nitrate fuel oil explosive, and is particularly suitable for upward hole charging. The explosive has the advantages of high intrinsic safety (no detonator sensitivity), high density, high explosion energy, low cost, certain water resistance and the like; meanwhile, in the engineering blasting, the emulsified granular ammonium nitrate fuel oil explosive has the viscosity of an emulsion matrix and the looseness of the porous granular ammonium nitrate explosive, so that the emulsified granular ammonium nitrate fuel oil explosive can be adhered to an upward blast hole in a conglobation manner without falling under the extrusion action of air pressure during pneumatic conveying and explosive loading, has the advantages of high efficiency and quickness in explosive loading, and is popular with mine users.
At present, more than ten emulsified ammonium nitrate fuel oil explosives are produced in China, mainly mixing is carried out by a field mixing truck, an emulsion matrix is prepared in a mode of 'pre-emulsification + screw pump fine emulsification', the mixing process is divided into two types, one type is a horizontal mixer process, and the other type is the same as that of foreign countries, and a spiral conveying mixer is used. For example, the technology of BME series emulsified ammonium nitrate fuel oil explosive mixed loading truck developed and produced by Beijing institute of mining and metallurgy is to convey materials into a horizontal mixer by screw to mix, and finally obtain the finished explosive. The BCZH-15 type emulsified ammonium nitrate fuel oil explosive mixed truck developed by the Mingmian mining machinery plant uses a spiral conveying mixing technology to complete mixing and loading on the truck. In China, there are also several fixed emulsion ammonium nitrate fuel oil explosive production lines: the production process is mainly continuous or semi-continuous, the preparation of the emulsion matrix is the same as that of the emulsion explosive, dynamic emulsification is adopted, the power of a motor is about 22kw, the working rotation speed is 1500r/m, the linear speed is 15m/s, and the capacity: 3t/h-6 t/h; mixing porous granular ammonium nitrate with diesel oil and latex matrix by using horizontal mixing equipment or a screw conveyer; the charging and packaging mainly comprises bulk big packages, the packaging bags are manually opened and are manually packaged after filling, and finished products are conveyed to a loading point through a conveyor belt and manually loaded on a vehicle.
In the prior art, the automation degree of a domestic ground fixing production line is not high, an emulsion matrix needs to be prepared in a storage tank in advance and then mixed with porous ammonium nitrate, continuous mixing with the emulsion matrix and automatic packaging and loading after mixing cannot be realized, the labor intensity is high, the number of on-line personnel is still too large, and 9 people are needed in the whole line.
In a word, the conventional emulsified granular ammonium nitrate fuel oil explosive fixed production line in China has low automation degree of process technology, ammonium nitrate fuel oil is mixed and stirred by an ammonium nitrate fuel oil vehicle and then is thrown into a mixing tank of a workshop, a worker adds latex into the mixing tank by a small cart to mix, the process is backward, the safety is low, and the automation of charging, packaging and loading is not realized, so that a lot of online operators are caused, and the requirements of few (no) humanized national industrial policies of the production line cannot be met.
Disclosure of Invention
The invention aims to provide an automatic control system for the production of an emulsified ammonium nitrate fuel oil explosive, which can realize the automatic control of the whole production field, reduce the consumption of manpower and realize the full automation of the production process in the whole process of the production of the emulsified ammonium nitrate fuel oil explosive.
In order to solve the above problems, the present invention provides an automatic control system for the production of an emulsified ammonium nitrate fuel oil explosive, which is used for the automatic control of an automatic production line of the emulsified ammonium nitrate fuel oil explosive, wherein the automatic production line of the emulsified ammonium nitrate fuel oil explosive comprises an explosive preparation assembly, a packaging assembly, a stacking assembly and a loading assembly which are sequentially arranged according to the production sequence of the emulsified ammonium nitrate fuel oil explosive, and the automatic control system comprises: the device comprises a porous granular ammonium nitrate unpacking control module, a material level detection control module, a motor control module, a material bag spacing control module and an online medicine material amount control module;
the porous granular ammonium nitrate unpacking control module is used for completing one unpacking action required after the porous granular ammonium nitrate bale comes out of the storage bin;
the material level detection control module is used for completing material level control in a porous granular ammonium nitrate bin, a latex matrix preparation bin and a diesel oil storage tank, wherein the material level is set to be high level, middle level and low level, feeding is accelerated when the material level is low level, the feeding speed is kept unchanged when the material level is middle level, and feeding is decelerated when the material level is high level;
the motor control module is used for completing current, voltage, frequency and rotating speed collection of a double-helix mixer comprising an ammonium nitrate conveying screw, an ammonium nitrate quantitative screw, an ammonium nitrate oil mixing screw and matrix mixing, a finished product conveying screw, a latex quantitative conveying screw, a latex matrix conveying belt, a finished product conveying belt, an automatic charging big packing machine and a diesel pump motor, wherein the current is overlarge, alarm information is generated, and the machine is shut down in a linkage manner when the current exceeds a certain limit;
and the material bag spacing control module controls the material bag spacing on the finished product conveying belt to exceed 4.5 meters by frequently starting and stopping the conveying belt in the previous process.
And the on-line charge control module is used for completing the feeding counting of the porous granular ammonium nitrate bin and the discharging counting of the full-automatic loading package, wherein the feeding minus the discharging is equal to the on-line charge, and the feeding speed is reduced when the charge exceeds the limit.
And further, the system also comprises a deluge system control module which is used for completing the temperature acquisition of the ammonium oil mixing screw, the double-screw mixing machine and the finished product conveying inclined screw, and if the temperature is too high, alarm information is generated and exceeds a certain limit, and the machine is shut down in a linkage manner.
Furthermore, the system also comprises an integral system monitoring module which is used for realizing the real-time display of the relevant data of each parameter of the motor, the temperature of each system, the material level of each bin and the diesel oil flow in a console system, and a display screen is arranged at the machine position of the automatic charging and packaging machine for displaying the relevant data (voltage, current, explosive package number and explosive package number) on site in real time;
still include system security interlock control module: the system comprises an excess control unit contained in a material level detection control module, a motor overload control unit contained in a motor control module, a temperature control unit contained in a deluge system control module and a material bag spacing control module; the automatic shutdown device is used for automatic shutdown of equipment overload, shutdown of a stacker crane in a chain packaging machine after a fault (after 3 minutes), and alarm shutdown of a full-line fault. Through setting the safety interlocking parameters, the operation of the safety interlocking system is effectively detected on site.
Still further, still include on-spot emergency control module, set up through the production site and open and stop the button for emergency control.
The automatic matching device further comprises a control matching module, the automatic matching of the stacking and loading speed and the packaging speed of the bale packing machine is realized, and an alarm is sent to the packaging equipment when the stacking equipment is abnormal; and sending an alarm to the pharmaceutical process when the packaging equipment is abnormal.
And the control interlocking module is further included, when the stacking loading position is full or the equipment fails, the packaging of the bale packing machine automatically reduces the productivity, and after a certain time (3 minutes), the bale packing machine stops running.
Still further, the shutdown sequence of linkage shutdown is: the device comprises a porous granular ammonium nitrate bin, an ammonium nitrate conveying screw and an ammonium nitrate quantitative screw, wherein the ammonium nitrate quantitative screw and a diesel oil conveying pump can stop ammonium oil mixing screw after stopping, after a suspension conveying device, a latex matrix quantitative conveying screw and a latex matrix conveying belt stop in sequence, a double-screw mixing machine can stop after the latex matrix conveying belt and the ammonium oil mixing screw stop, and then a finished product conveying device, an automatic charging bale packing machine, a finished product conveying belt, a full-automatic intelligent loading stacking machine, an air compressor and an automatic control system are sequentially arranged.
Specifically, the high temperature produces alarm information, exceeds certain quota, and the concrete temperature requirement of linkage shut down is: when the temperature is 65 ℃ higher than the first set temperature, the system gives an alarm, and if the alarm is not solved within a certain time (3 minutes), the system is automatically stopped on the whole line; when the temperature is 80 ℃ higher than the second set temperature, the system alarms, the whole line is stopped, meanwhile, the electromagnetic valve of the fire-fighting deluge system is automatically opened, and deluge facilities in the equipment are opened.
Specifically, the settings of various parameters of the motor, the temperature of each system, the material level of each bin and the data related to the diesel oil flow (namely, equipment control parameters and safety interlocking parameters) adopt the setting of an open source (which can be adjusted on site according to actual conditions, such as the first set temperature of an alarm parameter of 65 degrees) on the program, the optimal parameters are obtained through the on-site debugging of the equipment, and the program adaptability is strong; encryption is adopted in program operation, parameters are modified according to corresponding authority, and the reliability of program operation is guaranteed only after authorized by a designer manager.
Specifically, the feeding screw, the diesel pump, the matrix pump and the mixing screw are all controlled by a variable frequency bus; the system can read the operating parameters of the devices in real time: current, voltage, frequency, speed, and fault code; according to the running parameter values of the devices, the system can intelligently judge the running state of each device, and can automatically alarm and stop in an interlocking manner after the devices are abnormal.
Compared with the prior art, the invention has the following advantages:
the invention realizes continuous automatic safety production, reduces labor intensity, realizes little unmanned production, and particularly realizes continuous automatic metering feeding of raw materials (namely, continuous automatic metering feeding of porous granular ammonium nitrate, continuous automatic metering feeding of emulsion matrix and continuous automatic metering feeding of diesel oil), continuous automatic mixing (namely, continuous mixing of ammonium nitrate fuel and emulsified granular ammonium nitrate fuel, continuous mixing of emulsified granular ammonium nitrate fuel), continuous automatic packaging (namely, automatic bag opening, charging, metering and automatic packaging) and large-package automatic stacking and loading vehicles (namely, automatic stacking and unmanned loading of large packaged bulk packages); the whole line is intelligently linked and is provided with safety interlocking protection;
in the production process, the position of the raw material on the production line is detected, and the relevant information of feeding and discharging can be accurately obtained in real time;
the safety of production can be further ensured by adopting the motor control module and the deluge system for control;
the effectual realization of material package interval control is prevented sympathetic detonation function, has reduced the possibility of exploding in the production process, has further promoted the security of production line.
Drawings
FIG. 1: a main control flow diagram of a first embodiment of the present invention;
FIG. 2: the system structure of the control system of the present invention.
Detailed Description
The first embodiment is as follows:
as shown in fig. 1, an automatic control system for emulsion ammonium nitrate fuel oil explosive production is used for automatic control of an emulsion ammonium nitrate fuel oil explosive automatic production line, the emulsion ammonium nitrate fuel oil explosive automatic production line comprises an explosive preparation assembly, a packaging assembly, a stacking assembly and a loading assembly (including equipment of a finished product transfer trolley warehousing process in fig. 1) which are sequentially arranged according to an emulsion ammonium nitrate fuel oil explosive production sequence, the automatic loading and stacking system in fig. 1 includes the stacking assembly and the loading assembly, and the automatic control system comprises: a porous granular ammonium nitrate unpacking control module, a material level detection control module, a motor control module, a material bag spacing control module and an online medicine material amount control module,
the porous granular ammonium nitrate unpacking control module is used for completing one unpacking action required after the porous granular ammonium nitrate bale comes out of the storage bin; the control device of the unpacking device is used for unpacking the first material (written as 'incoming material' in figure 1) at the first time.
The material level detection control module is used for completing material level control (written as 'capacitance material level detection control (high, medium and low)') in a porous granular ammonium nitrate bin, an emulsion matrix preparation bin and a diesel oil storage tank, wherein the material level is set to be in three levels of high level, middle level and low level, the material level low-level feeding is accelerated, the middle level feeding speed is kept unchanged, and the high-level feeding is decelerated;
the control of the dose on the production line can be effectively known whether the dose exceeds the production limit, and the on-line dose control module is used for completing the feeding counting of a porous granular ammonium nitrate bin, the discharging counting of full-automatic medicine-loading package, the feeding minus discharging is equal to the on-line dose, the dose exceeds the limit, and the feeding is decelerated.
The motor control module is used for completing current, voltage, frequency and rotating speed collection of a double-helix mixing machine, a finished product conveying screw, a latex quantitative conveying screw, a latex matrix conveying belt, a finished product conveying belt, an automatic charging bale making machine and a diesel pump motor, wherein the current, the voltage, the frequency and the rotating speed collection are performed, alarm information is generated when the current is too large, a certain limit is exceeded, and linkage shutdown is performed (in figure 1, the conditions are written as 'current and temperature high alarm and too high shutdown'); the embodiment also comprises a bucket elevator which is used for sending the opened ammonium nitrate raw material to an ammonium nitrate fuel oil mixing screw for ammonium nitrate fuel oil mixing;
and the material bag spacing control module controls the material bag spacing on the finished product conveying belt to exceed 4.5 meters through frequent starting and stopping of the belt conveying in the previous process (written as controlling the material bag spacing (4.5 meters) in figure 1). When the belt speed is constant, the starting and stopping time of the belt is controlled by a solid-state relay, and the sympathetic explosion prevention function of 4.5 m space between the material bags is realized by logic control among 2 photoelectric switches;
in the production process, because the ammonium nitrate is easy to explode and generate linkage effect in a certain range, the control of the distance between the material bags is necessary.
And the on-line charge control module is used for completing the feeding counting of the porous granular ammonium nitrate bin and the discharging counting of the full-automatic loading package, wherein the feeding minus the discharging is equal to the on-line charge, and the feeding speed is reduced when the charge exceeds the limit.
The device also comprises a deluge system control module which is used for completing temperature acquisition (written as ' temperature acquisition (deluge system ') in the figure 1) comprising the ammonium oil mixing screw, the double-helix mixing machine and the finished product conveying inclined screw, the temperature of the screw can rise due to continuous stirring transmission, if the temperature is too high, alarm information is generated and exceeds a certain limit, and linkage shutdown is performed (written as ' alarm for high current and temperature and shutdown for too high power in the figure 1).
The temperature is too high, produces alarm information, surpasss certain quota, and the concrete temperature requirement of linkage shut down does: when the temperature is higher than a first set temperature (65 ℃), the system gives an alarm, and if the alarm is not solved within a certain time (3 minutes), the system is automatically stopped on the whole line; when the temperature is higher than a second set temperature (80 ℃), the system alarms, the whole line is stopped, meanwhile, the electromagnetic valve of the fire-fighting deluge system is automatically opened, and deluge facilities in the equipment are opened.
The system also comprises an integral system monitoring module which is used for realizing the real-time display of relevant data of various parameters of a motor, the temperature of each system, the material level of each bin and the diesel oil flow (the position of frequency control is written in figure 1, which indicates that the pumping metering of diesel oil, the quantitative conveying (spiral) of emulsion matrix and the quantitative conveying (spiral) of ammonium nitrate all pass through the frequency control) in a control console system, and a machine position installation display screen of an automatic charging bale machine displays relevant field data (voltage, current, explosive package number and explosive package number) in real time;
the method is characterized in that various parameters of the motor, the temperature of each system, the material level of each bin and related data (namely equipment control parameters and safety interlocking parameters) of the diesel oil flow are set on a program by adopting an open source (the setting can be adjusted on site according to actual conditions, for example, the first set temperature of an alarm parameter is 65 degrees), the optimal parameters are obtained by field debugging of the equipment, encryption is adopted in the process of program operation, the parameters need to be modified according to corresponding authorities, and the reliability of the program operation can be guaranteed only after authorized by managers of designers.
The automatic stacker crane further comprises a system safety interlocking control module which is used for automatic shutdown of equipment overload, shutdown of a stacker crane fault (3 minutes) interlocking packaging machine and shutdown of full-line fault alarm. Through setting the safety interlocking parameters, the operation of the safety interlocking system is effectively detected on site.
The feeding screw, the diesel pump, the matrix pump and the mixing screw are all controlled by a variable frequency bus; the system can read the operating parameters of the devices in real time: current, voltage, frequency, speed, and fault code; according to the running parameter values of the devices, the system can intelligently judge the running state of each device, and can automatically alarm and stop in an interlocking manner after the devices are abnormal.
The sequence of the interlocked shutdown in the embodiment is as follows: the device comprises a porous granular ammonium nitrate bin, an ammonium nitrate conveying screw, a bucket elevator and an ammonium nitrate quantitative screw, wherein the ammonium nitrate quantitative screw and a diesel oil conveying pump can stop ammonium nitrate oil mixing screw after stopping, after a suspension conveying device, a latex matrix quantitative conveying screw and a latex matrix conveying belt stop in sequence, a double-screw mixer can stop after the latex matrix conveying belt and the ammonium nitrate oil mixing screw stop, and then a finished product conveying device, an automatic charging bale packing machine, a finished product conveying belt, a full-automatic intelligent loading stacking machine, an air compressor and an automatic control system are arranged in sequence.
The production starting sequence of the automatic production line of the emulsified ammonium nitrate fuel oil explosive sequentially comprises the following steps: the automatic loading machine comprises an air compressor, an automatic control system, a full-automatic intelligent loading stacking machine, a finished product conveying belt, an automatic loading bale press, a finished product conveying inclined screw, a double-screw mixing machine, a latex matrix conveying belt and an ammonium nitrate mixed screw, a latex matrix quantitative conveying screw, a diesel oil conveying pump and an ammonium nitrate quantitative screw, wherein a suspension conveying device is started after the latex matrix quantitative conveying screw is started, a latex matrix is conveyed to a latex matrix temporary storage room after being discharged from an emulsion explosive production workshop, the latex matrix is automatically poured into a latex matrix for standby by using the suspension conveying device (the prior art designed by Nantong Xunxiang automation equipment Limited company), and a bucket elevator, an ammonium nitrate conveying screw and a porous granular ammonium nitrate bin are sequentially arranged after the ammonium nitrate quantitative screw.
The automatic control system is formed by combining Siemens S7-1500PLC control systems; the system has excellent system characteristics and a unique upgradable architecture for a universal process control system that combines flexible modular technology with robust capabilities such as unified data management, communication and configuration, and is an ideal basis for building and operating control technology plants in an economical and efficient manner. Programming software and upper computer picture operation software: the PLC program is developed by adopting a Siemens process control system; the upper computer picture is completed with functions of flow chart display, control, operation, alarm recording, report forms and the like by Siemens configuration software; the software requires to adopt the upper computer software of the latest version and other software required by an operation panel and a system, and all the software is legal software; the user and alarm interface adopts Chinese interface and description. The system CPU controller adopts a Siemens S7-1500 controller.
As shown in fig. 2, the system configuration diagram of the control system of the present invention. In terms of system network, a Siemens S7-1500PLC control system (configured with S7-1500 controllers) carries out data communication through an industrial Ethernet module and upper machine configuration software through the industrial Ethernet; the operation station and the engineer station carry out data communication through an industrial Ethernet card and a PLC through an industrial Ethernet; the operation station and the engineer station carry out data communication with other systems through an IE common network card. In the aspect of data sampling design, the output current and the output frequency of the frequency converter are read in a 485 mode; a capacitance type material level sensor is adopted to measure the material level of the storage bin, and a high-low alarm limit and a forced shutdown position are arranged in an upper computer system; a PT100 temperature sensor is adopted to measure the temperature, a high-level alarm is set in an upper computer system, and the machine is shut down in an ultrahigh way; the liquid level sensor is adopted to measure the diesel oil liquid level, the height alarm limit is arranged in the upper computer system, the flow meter is used for measuring the diesel oil flow, the diesel oil flow is fed back to the upper computer through the PLC, the real-time monitoring is realized, and the PLC regulates and controls the opening of the electric valve in real time to control the diesel oil flow.
The system is provided with an operation station 2 and an engineer station, wherein the engineer station and operation station 1 has the function (marked as the engineer station and operation station 1 in figure 2) and is connected with the S7-1500 controller (comprising electric connection and communication connection); the engineer station/operation station 1 and the operation station 2 are equipped with human machine interaction interfaces to perform HMI human machine interaction (in fig. 2, "field HMI" is written).
The frequency converters corresponding to the motors (marked as a plurality of field control motors in figure 2) are MM440-1, MM440-2, and.
Example two:
compared with the first embodiment, the present embodiment is different in that: the system also comprises a field emergency control module, and a start-stop button is arranged on the production field for emergency control.
The rest of the contents are the same as the first embodiment.
Example three:
compared with the two embodiments, the embodiment is different in that: the automatic matching device also comprises a control matching module, which is used for realizing the automatic matching of the stacking and loading speed and the packaging speed of the bale packing machine, and sending an alarm to the packaging equipment when the stacking equipment is abnormal; and sending an alarm to the pharmaceutical process when the packaging equipment is abnormal.
The rest of the contents are the same as the second embodiment.
Example four:
compared with the three phases of the embodiment, the embodiment is different in that: the large packing machine further comprises a control interlocking module, when the stacking loading space is full or equipment fails, the large packing machine automatically reduces the production capacity, and after a certain time (3 minutes in the embodiment), the large packing machine stops running.
The rest of the contents are the same as the third embodiment.
Claims (10)
1. The utility model provides an automatic control system of emulsion ammonium nitrate fuel oil explosive production for emulsion ammonium nitrate fuel oil explosive automatic production line's automatic control, emulsion ammonium nitrate fuel oil explosive automatic production line includes explosive preparation subassembly, package assembly, pile up neatly subassembly, the assembly of cars subassembly that arranges in proper order according to emulsion ammonium nitrate fuel oil explosive production order, its characterized in that, automatic control system includes: the device comprises a porous granular ammonium nitrate unpacking control module, a material level detection control module, a motor control module, a material bag spacing control module and an online medicine material amount control module;
the porous granular ammonium nitrate unpacking control module is used for completing one unpacking action required after the porous granular ammonium nitrate bale comes out of the storage bin;
the material level detection control module is used for completing material level control in a porous granular ammonium nitrate bin, a latex matrix preparation bin and a diesel oil storage tank, wherein the material level is set to be high level, middle level and low level, feeding is accelerated when the material level is low level, the feeding speed is kept unchanged when the material level is middle level, and feeding is decelerated when the material level is high level;
the motor control module is used for completing current, voltage, frequency and rotating speed collection of a double-helix mixer comprising an ammonium nitrate conveying screw, an ammonium nitrate quantitative screw, an ammonium nitrate oil mixing screw and matrix mixing, a finished product conveying screw, a latex quantitative conveying screw, a latex matrix conveying belt, a finished product conveying belt, an automatic charging big packing machine and a diesel pump motor, wherein the current is overlarge, alarm information is generated, and the machine is shut down in a linkage manner when the current exceeds a certain limit;
the material bag spacing control module controls the material bag spacing on the finished product conveying belt to exceed 4.5 meters through the frequent starting and stopping of the conveying belt in the previous process;
and the on-line charge control module is used for completing the feeding counting of the porous granular ammonium nitrate bin and the discharging counting of the full-automatic loading package, wherein the feeding minus the discharging is equal to the on-line charge, and the feeding speed is reduced when the charge exceeds the limit.
2. The automatic control system for the production of an emulsified ammonium nitrate fuel oil explosive according to claim 1, characterized by further comprising a deluge system control module for completing the temperature acquisition of the ammonium nitrate fuel oil mixing screw, the double-helix mixer and the finished product conveying inclined screw, and if the temperature is too high, alarm information is generated, and if the temperature exceeds a certain limit, the machine is shut down in a linkage manner.
3. The automatic control system for the production of an emulsified ammonium nitrate fuel oil explosive according to claim 1, characterized by further comprising an overall system monitoring module, wherein the overall system monitoring module is used for realizing the real-time display of relevant data of various parameters of a motor, the temperature of each system, the material level of each storage bin and the diesel oil flow in a console system, and a display screen is installed on a machine position of an automatic charging and packaging machine for displaying relevant data on site in real time;
the system also comprises a system safety interlocking control module which is used for automatic shutdown of equipment overload, shutdown of a stacker crane fault interlocking packaging machine and shutdown of full-line fault alarming.
4. The automatic control system for the production of an emulsified ammonium nitrate fuel oil explosive according to claim 1, characterized by further comprising a field emergency control module for emergency control by setting a start-stop button on the field.
5. The automatic control system for the production of the emulsified ammonium nitrate fuel oil explosive according to claim 1, which is characterized by further comprising a control matching module, wherein the control matching module is used for realizing the automatic matching of the speed of stacking and loading and the packaging speed of a bale packing machine, and sending an alarm to the packaging equipment when the stacking equipment is abnormal; and sending an alarm to the pharmaceutical process when the packaging equipment is abnormal.
6. The system of claim 1, further comprising a control interlock module, wherein when the palletizing load station is full or the equipment fails, the bale packing machine automatically reduces the capacity, and after a certain time, the bale packing machine stops.
7. An automatic control system for the production of an emulsified ammonium nitrate fuel oil explosive according to claim 3, characterized in that the shutdown sequence of the linked shutdown is: the device comprises a porous granular ammonium nitrate bin, an ammonium nitrate conveying screw, a bucket elevator and an ammonium nitrate quantitative screw, wherein the ammonium nitrate quantitative screw and a diesel pump can stop the ammonium nitrate mixed screw after stopping, after a suspension conveying device, a latex quantitative conveying screw and a latex matrix conveying belt stop in sequence, a double-screw mixer can be stopped after the latex matrix conveying belt and the ammonium nitrate mixed screw stop, and then a finished product conveying device, an automatic charging bale packing machine, a finished product conveying belt, a full-automatic intelligent loading stacking machine, an air compressor and an automatic control system are arranged in sequence.
8. The automatic control system for the production of an emulsified ammonium nitrate fuel oil explosive according to claim 2, wherein the specific temperature requirements for the linked shutdown include that the temperature is too high, alarm information is generated, and the specific temperature requirements for the linked shutdown exceed a certain limit: when the temperature is 65 ℃ higher than the first set temperature, the system gives an alarm, and if the alarm is not solved within a certain time, the system is automatically stopped on the whole line; when the temperature is 80 ℃ higher than the second set temperature, the system alarms, the whole line is stopped, meanwhile, the electromagnetic valve of the fire-fighting deluge system is automatically opened, and deluge facilities in the equipment are opened.
9. The automatic control system for the production of an emulsified ammonium nitrate fuel oil explosive according to claim 3, characterized in that the settings of the parameters of the motor, the temperature of each system, the material level of each silo and the data related to the diesel oil flow are programmed by adopting open source settings, the optimal parameters are obtained by field debugging of equipment, and encryption is adopted during the program operation, so that the reliability of the program operation is guaranteed.
10. The automatic control system for the production of an emulsified ammonium nitrate fuel oil explosive according to claim 3, characterized by further comprising a feed screw, a diesel pump, a matrix pump, and a kneading screw, all of which are controlled by a variable frequency bus; the system can read the operating parameters of the devices in real time: current, voltage, frequency, speed, and fault code; according to the running parameter values of the devices, the system can intelligently judge the running state of each device, and can automatically alarm and stop in an interlocking manner after the devices are abnormal.
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| CN109400428A (en) * | 2018-11-26 | 2019-03-01 | 山西江阳兴安民爆器材有限公司 | A kind of new modified porous particulated ammonium oil explosive and its production technology |
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