CN114396691A - Frequency conversion ventilation system arranged in workshop of factory building and capable of exhausting air in accident - Google Patents
Frequency conversion ventilation system arranged in workshop of factory building and capable of exhausting air in accident Download PDFInfo
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- CN114396691A CN114396691A CN202210093952.7A CN202210093952A CN114396691A CN 114396691 A CN114396691 A CN 114396691A CN 202210093952 A CN202210093952 A CN 202210093952A CN 114396691 A CN114396691 A CN 114396691A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
- F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to a variable-frequency ventilation system which is arranged in a workshop of a factory building and can exhaust air in case of accidents, and the variable-frequency ventilation system comprises a fan system, a photosensitive thermal imaging system, a pollutant concentration induction alarm system and a production safety control system, wherein the fan system, the photosensitive thermal imaging system, the pollutant concentration induction alarm system and the production safety control system are all arranged on the outer wall of the workshop of the factory building. This establish frequency conversion ventilation system who compromises accident and exhaust in factory building workshop, can judge rapidly when taking place the pollutant and reveal the region, tell the workman through the alarm, remind the workman to leave this region rapidly, and the automatic selection scheme of discharging fume, realize the high-efficient action of discharging fume, workman operational environment's air quality safety is guaranteed to the at utmost, and when not taking place the pollutant and reveal, according to factory building heat change, and to the regional judgement of counterpoint ventilation, the frequency conversion adaptation amount of wind changes, the ventilation scheme is selected to the intelligence, thereby when high-efficient ventilation is removed heat, realize energy-conservation, reach the effect of doing the job doubly.
Description
Technical Field
The invention relates to the technical field of variable-frequency ventilation systems, in particular to a variable-frequency ventilation system which is arranged in a workshop of a factory building and can exhaust air in accidents at the same time.
Background
In economic development rapidly, the chemical industry level constantly improves now, people are increasingly big to the volume demand of chemicals, and the production technology that chemical enterprises used often can produce the chemical substance that has toxicity and corrosivity, it can produce the harm to personnel and equipment, possibly cause easily fire and explode the revealing of material, the high temperature and the high pressure that produce in the chemical industry operation process, also more likely cause conflagration and explosion, this also makes this kind of factory building workshop have the volume huge, and the characteristics that seal relatively, there is a large amount of waste heat in the factory building workshop, the surplus humidity, gaseous pollutants gives off, therefore ventilation design is an important ring in factory building workshop global design.
Some chemical enterprises do not design the factory building according to the needs of chemical process flow and national specifications during construction, or the layout and structure of the factory building can not meet the requirements due to objective reasons, such enterprises have congenital potential safety hazards such as ventilation, leakage, pressure release, explosion, fire and the like, for some small and medium-sized chemical enterprises, due to professional limitation, many employees do not have safety training and are not familiar with the operation process, meanwhile, the probability of ventilation accidents is greatly increased due to incompleteness of safety measures such as responsibility system, supervision mechanism, accident emergency rescue plan and the like, the existing measures are usually mechanical ventilation as the main part, natural ventilation as the auxiliary part, whether local ventilation is needed or not is selected according to the requirements of the process, the natural ventilation as the main part, the mechanical ventilation as the auxiliary part, two local ventilation modes are arranged in a possibly-appearing pollution area, and the adopted equipment mainly comprises an exhaust fan and an axial flow fan, the automation degree is low, the air quantity matching control is not carried out on the air speed of the fan, and the requirement on the air flow organization is not high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the variable-frequency ventilation system which is arranged in a workshop of a factory building and gives consideration to accident air exhaust, has the advantages of high automation degree and the like, and solves the problems that the adopted equipment mainly comprises an exhaust fan and an axial flow fan, the automation degree is low, the air speed of the fan is not subjected to air quantity matching control, and the requirement on air flow organization is not high.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an it gives consideration to frequency conversion ventilation system that accident was aired exhaust to establish in factory building workshop, includes fan system, sensitization hot imaging system, pollutant concentration response alarm system and production safety control system, fan system, sensitization hot imaging system, pollutant concentration response alarm system and production safety control system all set up on the wall outside the factory building workshop.
Furthermore, the fan system comprises four groups of bidirectional variable frequency fans which are respectively a first bidirectional variable frequency fan group, a second bidirectional variable frequency fan group, a third bidirectional variable frequency fan group and a fourth bidirectional variable frequency fan group.
Further, the production safety control system comprises a production safety controller, a signal transmission line and a fan control line.
Furthermore, the first bidirectional variable frequency fan set, the second bidirectional variable frequency fan set, the third bidirectional variable frequency fan set and the fourth bidirectional variable frequency fan set are all installed on the outer wall of the workshop of the factory building, and the four groups of bidirectional variable frequency fans all penetrate through the outer wall of the workshop of the factory building together with the indoor and outdoor.
Furthermore, the four groups of bidirectional variable frequency fans are symmetrically distributed in the spatial layout, the working modes of the four groups of bidirectional variable frequency fans comprise an air supply mode and an air exhaust mode, and the four groups of bidirectional variable frequency fans are all connected with the production safety controller through fan control lines.
Further, the photosensitive thermal imaging system comprises a photosensitive thermal imaging probe support, a photosensitive thermal imaging probe body, a first reflective belt and a second reflective belt, wherein the photosensitive thermal imaging probe body is connected with the production safety controller through a signal transmission line.
Further, pollutant concentration response alarm system includes four pollutant concentration response alarm probes, is first pollutant concentration response alarm probe, second pollutant concentration response alarm probe, third pollutant concentration response alarm probe and fourth pollutant concentration response alarm probe respectively.
Further, the first light reflecting belt and the second light reflecting belt divide the space of the outer wall of the workshop into four areas, namely an upper left area, an upper right area, a lower left area and a lower right area, and two central lines of the upper left area, the lower left area, the upper right area and the lower right area are respectively a first central line and a second central line.
Furthermore, the first bidirectional variable frequency fan group and the second bidirectional variable frequency fan group can determine a first central axis, and the third bidirectional variable frequency fan group and the fourth bidirectional variable frequency fan group can determine a second central axis.
And furthermore, the four pollutant concentration induction alarm probes are respectively arranged at four intersection points of the first central line, the second central line, the first central axis and the second central axis, and the four pollutant concentration induction alarm probes are connected with the production safety controller through signal transmission lines.
Compared with the prior art, the technical scheme of the application has the following beneficial effects:
1. the variable-frequency ventilation system which is arranged in a workshop of a factory building and can exhaust air in accident is characterized in that when pollutants leak in the workshop of the factory building, the production safety controller receives the pollutant concentration information collected by the four pollutant concentration induction alarm probes transmitted by the signal transmission line, after the information is comprehensively processed, determining the position of the area where the pollutants are leaked, determining the working modes of four groups of bidirectional variable frequency fan sets through fan control lines, operating at the maximum power, enabling the system to enter an accident ventilation and smoke exhaust mode, when no pollutant is leaked in the workshop, the production safety controller determines the heat distribution in the workshop according to the color chart information in the workshop, which is acquired by the photosensitive thermal imaging probe body transmitted by the signal transmission line, and then determines the working mode and the operating frequency of the four groups of bidirectional variable frequency fan sets through the fan control lines, and the system is in a ventilation and heat removal mode.
2. This establish frequency conversion ventilation system who compromises accident and exhaust in factory building workshop, can judge rapidly when taking place the pollutant and reveal the region, tell the workman through the alarm, remind the workman to leave this region rapidly, and the automatic selection scheme of discharging fume, realize the high-efficient action of discharging fume, workman operational environment's air quality safety is guaranteed to the at utmost, and when not taking place the pollutant and reveal, according to factory building heat change, and to the regional judgement of counterpoint ventilation, the frequency conversion adaptation amount of wind changes, the ventilation scheme is selected to the intelligence, thereby when high-efficient ventilation is removed heat, realize energy-conservation, reach the effect of doing the job doubly.
Drawings
FIG. 1 is a plan system view of a variable frequency ventilation system of the present invention designed for accident venting;
FIG. 2 is a floor plan of four contaminant concentration sensing alarm probes of the present invention;
FIG. 3 is a circuit floor plan of the manufacturing safety control system of the present invention;
FIG. 4 is a schematic view of the ventilation scheme of the present invention when no leakage of contaminants is detected and heat build-up occurs in the upper part of the plant;
FIG. 5 is a schematic view of the ventilation scheme of the present invention when no leakage of contaminants is detected and heat build-up occurs in the lower part of the plant;
FIG. 6 is a schematic view of the ventilation scheme of the present invention when no leakage of contaminants is detected and heat build-up occurs in the left part of the plant;
FIG. 7 is a schematic view of the ventilation scheme of the present invention when no leakage of contaminants is detected and heat build-up occurs in the right part of the plant;
FIG. 8 is a schematic view of the ventilation scheme of the present invention when no leakage of contaminants is detected and heat build-up occurs in the upper left and lower right regions of the plant room area;
FIG. 9 is a schematic illustration of the ventilation scheme of the present invention when no leakage of contaminants is detected and heat build-up occurs in the upper right and lower left areas of the plant room area;
FIG. 10 is a schematic illustration of a smoke evacuation scheme of the present invention with detection of a contaminant leak and a leak at the upper left of the area;
FIG. 11 is a schematic diagram of a smoke evacuation scheme of the present invention with a contaminant leak detected and leaking at the upper right of the area;
FIG. 12 is a schematic illustration of a smoke evacuation scheme of the present invention with detection of a contaminant leak and a leak in the lower left of the area;
figure 13 is a schematic diagram of the smoke evacuation scheme of the present invention with contaminant leakage detected and leakage at the lower right of the area.
In the figure: 1 photosensitive thermal imaging probe support, 2 photosensitive thermal imaging probe body, 31 first pollutant concentration induction alarm probe, 32 second pollutant concentration induction alarm probe, 33 third pollutant concentration induction alarm probe, 34 fourth pollutant concentration induction alarm probe, 35 signal transmission line, 41 first bidirectional frequency conversion fan group, 42 second bidirectional frequency conversion fan group, 43 third bidirectional frequency conversion fan group, 44 fourth bidirectional frequency conversion fan group, 45 fan control line, 51 first reflective belt, 52 second reflective belt, 61 regional upper left pollutant leakage, 62 regional upper right pollutant leakage, 63 regional lower left pollutant leakage, 64 regional lower right pollutant leakage, 8 production safety controller, 91 first central axis, 92 second central axis, 93 first central line, 94 second central line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 13, in this embodiment, the variable frequency ventilation system that is installed in a factory workshop and is configured to exhaust air in an accident includes a fan system, a photosensitive thermal imaging system, a pollutant concentration sensing alarm system, and a production safety control system, where the fan system, the photosensitive thermal imaging system, the pollutant concentration sensing alarm system, and the production safety control system are all installed on an outer wall 7 of the factory workshop, the fan system includes four sets of bidirectional variable frequency fans, which are respectively a first bidirectional variable frequency fan set 41, a second bidirectional variable frequency fan set 42, a third bidirectional variable frequency fan set 43, and a fourth bidirectional variable frequency fan set 44, the number of bidirectional variable frequency fans in the set of the first bidirectional variable frequency fan set 41, the second bidirectional variable frequency fan set 42, the third bidirectional variable frequency fan set 43, and the fourth bidirectional variable frequency fan set 44 is determined by requirements of factory area size and ventilation volume, and the production safety control system includes a production safety controller 8, a third bidirectional variable frequency fan set 43, a fourth bidirectional variable frequency fan set 44, and a fourth variable frequency fan set, The system comprises a signal transmission line 35 and a fan control line 45, wherein a first bidirectional frequency conversion fan set 41, a second bidirectional frequency conversion fan set 42, a third bidirectional frequency conversion fan set 43 and a fourth bidirectional frequency conversion fan set 44 are all installed on an outer wall 7 of a plant workshop, four groups of bidirectional frequency conversion fans all penetrate through the outer wall 7 of the plant workshop and are distributed symmetrically with the inside and the outside of the plant workshop, the working modes of the four groups of bidirectional frequency conversion fans comprise an air supply mode and an air exhaust mode, the four groups of bidirectional frequency conversion fans are all connected with a production safety controller 8 through the fan control line 45, starting and stopping of the four groups of bidirectional frequency conversion fans are controlled by the production safety controller 8, and the operating modes and the operating frequency are controlled by the production safety controller 8.
The photosensitive thermal imaging system comprises a photosensitive thermal imaging probe support 1, a photosensitive thermal imaging probe body 2, a first reflective belt 51 and a second reflective belt 52, the photosensitive thermal imaging probe body 2 can identify the first reflective belt 51 and the second reflective belt 52, the photosensitive thermal imaging probe body 2 is connected with the production safety controller 8 through a signal transmission line 35, the pollutant concentration induction alarm system comprises four pollutant concentration induction alarm probes, namely a first pollutant concentration induction alarm probe 31, a second pollutant concentration induction alarm probe 32, a third pollutant concentration induction alarm probe 33 and a fourth pollutant concentration induction alarm probe 34, the first reflective belt 51 and the second reflective belt 52 divide the space of the workshop outer wall 7 into four areas, namely an upper left area, an upper right area, a lower left area and a lower right area, and two central lines of the upper left area, the lower left area, the upper right area and the lower right area, be first central line 93 and second central line 94 respectively, the color chart information of factory building workshop inside can also be gathered to sensitization thermal imaging probe body 2 to detect the heat distribution condition in the factory building workshop.
Any one of the four pollutant concentration induction alarm probes detects that pollutants are leaked in a corresponding area, namely the pollutant concentration is no longer zero, the four pollutant concentration induction alarm probes immediately send out an alarm and transmit the pollutant concentration numerical information to the production safety controller 8 through a signal transmission line 35, the production safety controller 8 adjusts the operation mode of four groups of bidirectional variable frequency fan sets through a fan control line 45 and operates at the maximum frequency to enter an accident ventilation and smoke exhaust mode, the production safety controller 8 can be but is not limited to a computer or a single chip microcomputer, the working frequency of the four groups of bidirectional variable frequency fan sets can also be controlled and adjusted, the photosensitive thermal imaging probe body 2 acquires color heat map information inside a workshop of a factory building, the information is transmitted to the production safety controller 8 through the signal transmission line 35, and the production safety controller 8 analyzes real-time color heat map information, the method comprises the steps of determining two cloud picture areas with higher temperature in a color heat picture, comparing the two cloud picture areas with the temperature of a designed ventilation temperature, determining the position information of the areas with important ventilation and heat removal and the operating frequency of four groups of bidirectional variable frequency fan sets, entering a ventilation and heat removal mode, and enabling any one of four pollutant concentration induction alarm probes to detect that pollutants are leaked from the corresponding area, namely the pollutant concentration is no longer zero, immediately sending an alarm by the four pollutant concentration induction alarm probes, transmitting the pollutant concentration numerical information to a production safety controller 8 through a signal transmission line 35, enabling the production safety controller 8 to adjust the operating modes of the four groups of bidirectional variable frequency fan sets through a fan control line 45, operating at the maximum frequency, and entering an accident ventilation and smoke removal mode.
The production safety controller 8 processes color chart information inside a workshop of a factory building collected by the photosensitive thermal imaging probe body 2 transmitted by the signal transmission line 35 and pollutant concentration information collected by the four pollutant concentration induction alarm probes, controls the operation modes and operation frequencies of the four groups of bidirectional variable frequency fans through the fan control line 45, enables the whole system to have a ventilation heat removal mode and an accident ventilation smoke exhaust mode, automatically realizes switching, intelligently selects a smoke exhaust scheme under the corresponding modes, and realizes high-efficiency ventilation heat removal and ventilation smoke exhaust actions.
The invention provides a control logic of a production safety controller 8 for the operation modes and the operation frequencies of four groups of bidirectional variable frequency fans under a ventilation and heat removal mode, which comprises the following steps:
as shown in fig. 4, when the upper area of the plant room is an important ventilation and heat removal area, the production safety controller 8 controls the first dual inverter fan set 41 and the second dual inverter fan set 42 to be in an air supply mode, and the third dual inverter fan set 43 and the fourth dual inverter fan set 44 to be in an air exhaust mode, so that the air flow state in the plant room is as shown by arrows in fig. 4, and the higher the temperature of the area deviates from the designed ventilation temperature value, the higher the operating frequency of the fans is.
As shown in fig. 5, when the lower area of the plant room is an important ventilation and heat removal area, the production safety controller 8 controls the third and fourth dual inverter fan sets 43 and 44 to be in an air supply mode, and the first and second dual inverter fan sets 41 and 42 to be in an air exhaust mode, so that the air flow state in the plant room is as shown by arrows in fig. 5, and the higher the temperature of the area deviates from the designed ventilation temperature value, the higher the operating frequency of the fan is.
As shown in fig. 6, when the left area of the plant room is the important ventilation and heat removal area, the production safety controller 8 controls the second dual-directional variable frequency fan set 42 and the fourth dual-directional variable frequency fan set 44 to be in the air supply mode, and the first dual-directional variable frequency fan set 41 and the third dual-directional variable frequency fan set 43 to be in the air exhaust mode, so that the air flow state in the plant room is as shown by arrows in fig. 6, and the higher the temperature of the area deviates from the designed ventilation temperature value, the higher the operating frequency of the fans is.
As shown in fig. 7, when the right area of the plant room is an important ventilation and heat removal area, the production safety controller 8 controls the first dual inverter fan set 41 and the third dual inverter fan set 43 to be in an air supply mode, and the second dual inverter fan set 42 and the fourth dual inverter fan set 44 to be in an air exhaust mode, so that the air flow state in the plant room is as shown by arrows in fig. 7, and the higher the temperature of the area deviates from the designed ventilation temperature value, the higher the operating frequency of the fans is.
As shown in fig. 8, when the upper left and lower right of the plant workshop area are important ventilation and heat removal areas, the production safety controller 8 controls the first bidirectional inverter fan set 41 and the second bidirectional inverter fan set 42 to be in an air supply mode, and the third bidirectional inverter fan set 43 and the fourth bidirectional inverter fan set 44 to be in an air exhaust mode, so that the air flow state in the plant workshop is as shown by arrows in fig. 8, and meanwhile, the higher the temperature of the area deviates from the designed ventilation temperature value, the higher the operating frequency of the fans is.
As shown in fig. 9, when the upper right of the plant workshop area and the lower left of the plant workshop area are important ventilation and heat removal areas, the production safety controller 8 controls the first bidirectional inverter fan set 41 and the second bidirectional inverter fan set 42 to be in an air supply mode, and controls the third bidirectional inverter fan set 43 and the fourth bidirectional inverter fan set 44 to be in an air exhaust mode, so that the air flow state in the plant workshop is as shown by arrows in fig. 9, and meanwhile, the higher the temperature of the area deviates from the designed ventilation temperature value, the higher the operating frequency of the fans is.
In the production safety control system, the information processing logic and control logic of the production safety controller 8 for implementing the ventilation and heat removal mode are given, and the information processing logic and control logic of the production safety controller 8 for implementing the accident ventilation and smoke removal mode are described as follows:
as shown in fig. 10, when the first pollutant concentration sensing alarm probe 31 at the upper left of the plant workshop area detects that a pollutant leaks from the area, the first pollutant concentration sensing alarm probe 31 immediately gives an alarm and transmits pollutant concentration numerical information to the production safety controller 8 through the signal transmission line 35, and the production safety controller 8 adjusts the exhaust mode of the first bidirectional variable frequency fan set 41, the supply mode of the second bidirectional variable frequency fan set 42, the third bidirectional variable frequency fan set 43 and the fourth bidirectional variable frequency fan set 44 through the fan control line 45 and operates at the maximum frequency, so that the air flow state in the plant workshop is shown by the arrow in fig. 10.
As shown in fig. 11, when the second pollutant concentration sensing alarm probe 32 at the upper right of the plant workshop area detects that a pollutant leaks from the area, the second pollutant concentration sensing alarm probe 32 immediately gives an alarm and transmits the pollutant concentration value information to the production safety controller 8 through the signal transmission line 35, the production safety controller 8 adjusts the exhaust mode of the second bidirectional variable frequency fan set 42 through the fan control line 45, the first bidirectional variable frequency fan set 41, the third bidirectional variable frequency fan set 43 and the fourth bidirectional variable frequency fan set 44 are in the air supply mode and operate at the maximum frequency, so that the air flow state in the plant workshop is shown as an arrow in fig. 11.
As shown in fig. 12, when the third pollutant concentration sensing alarm probe 33 at the lower left of the plant workshop area detects that a pollutant leaks from the area, the third pollutant concentration sensing alarm probe 33 immediately gives an alarm and transmits the pollutant concentration value information to the production safety controller 8 through the signal transmission line 35, the production safety controller 8 adjusts the exhaust mode of the third bidirectional variable frequency fan set 43 through the fan control line 45, the first bidirectional variable frequency fan set 41, the second bidirectional variable frequency fan set 42 and the fourth bidirectional variable frequency fan set 44 are in the air supply mode and operate at the maximum frequency, so that the air flow state in the plant workshop is shown as an arrow in fig. 12.
As shown in fig. 13, when the fourth pollutant concentration sensing alarm probe 34 at the upper left of the plant workshop area detects that a pollutant leaks from the area, the fourth pollutant concentration sensing alarm probe 34 immediately gives an alarm and transmits the pollutant concentration value information to the production safety controller 8 through the signal transmission line 35, the production safety controller 8 adjusts the exhaust mode of the fourth bidirectional variable frequency fan set 44, the first bidirectional variable frequency fan set 41, the second bidirectional variable frequency fan set 42 and the third bidirectional variable frequency fan set 43 through the fan control line 45, and operates at the maximum frequency, so that the air flow state in the plant workshop is as shown by the arrow in fig. 13.
The intelligent smoke exhaust system has the advantages that a leakage area can be rapidly judged when pollutants are leaked, workers are informed through an alarm to be reminded to rapidly leave the area, a smoke exhaust scheme is automatically selected, efficient smoke exhaust actions are achieved, air quality safety of the working environment of the workers is guaranteed to the maximum extent, and when no pollutants are leaked, frequency conversion is adapted to air volume changes according to plant heat changes and judgment of a heavy ventilation area, a ventilation scheme is intelligently selected, so that energy is saved while efficient ventilation and heat removal are achieved, and the effect of achieving twice with half the effort is achieved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an it gives consideration to frequency conversion ventilation system that accident was aired exhaust to establish in factory building workshop which characterized in that: the system comprises a fan system, a photosensitive thermal imaging system, a pollutant concentration induction alarm system and a production safety control system, wherein the fan system, the photosensitive thermal imaging system, the pollutant concentration induction alarm system and the production safety control system are all arranged on an outer wall (7) of a workshop of a factory building.
2. The variable-frequency ventilation system which is arranged in a factory workshop and can exhaust air during accidents at the same time as in claim 1 is characterized in that: the fan system comprises four groups of bidirectional variable frequency fans which are respectively a first bidirectional variable frequency fan group (41), a second bidirectional variable frequency fan group (42), a third bidirectional variable frequency fan group (43) and a fourth bidirectional variable frequency fan group (44).
3. The variable-frequency ventilation system which is arranged in a factory workshop and can exhaust air during accidents at the same time as in claim 2 is characterized in that: the production safety control system comprises a production safety controller (8), a signal transmission line (35) and a fan control line (45).
4. The variable-frequency ventilation system which is arranged in a factory workshop and can exhaust air during accidents at the same time as in claim 2 is characterized in that: the first bidirectional variable frequency fan set (41), the second bidirectional variable frequency fan set (42), the third bidirectional variable frequency fan set (43) and the fourth bidirectional variable frequency fan set (44) are all installed on the outer wall (7) of the workshop of the factory building, and the four bidirectional variable frequency fans all penetrate through the outer wall (7) of the workshop of the factory building together with the indoor and outdoor.
5. The variable-frequency ventilation system which is arranged in a factory workshop and can exhaust air during accidents at the same time as in claim 3 is characterized in that: the four groups of bidirectional variable frequency fans are symmetrically distributed in spatial layout, the working modes of the four groups of bidirectional variable frequency fans comprise an air supply mode and an air exhaust mode, and the four groups of bidirectional variable frequency fans are all connected with a production safety controller (8) through fan control lines (45).
6. The variable-frequency ventilation system which is arranged in a factory workshop and can exhaust air during accidents at the same time as in claim 3 is characterized in that: the photosensitive thermal imaging system comprises a photosensitive thermal imaging probe support (1), a photosensitive thermal imaging probe body (2), a first reflective belt (51) and a second reflective belt (52), wherein the photosensitive thermal imaging probe body (2) is connected with a production safety controller (8) through a signal transmission line (35).
7. The variable-frequency ventilation system which is arranged in a factory workshop and can exhaust air during accidents at the same time as in claim 1 is characterized in that: pollutant concentration response alarm system includes four pollutant concentration response alarm probes, is first pollutant concentration response alarm probe (31), second pollutant concentration response alarm probe (32), third pollutant concentration response alarm probe (33) and fourth pollutant concentration response alarm probe (34) respectively.
8. The variable-frequency ventilation system which is arranged in a factory workshop and can exhaust air during accidents at the same time as in claim 6 is characterized in that: the first light reflecting belt (51) and the second light reflecting belt (52) divide the space of the outer wall (7) of the workshop into four areas, namely an upper left area, an upper right area, a lower left area and a lower right area, and two central lines of the upper left area, the lower left area, the upper right area and the lower right area are respectively a first central line (93) and a second central line (94).
9. The variable-frequency ventilation system which is arranged in a factory workshop and can exhaust air during accidents at the same time as in claim 8 is characterized in that: the first bidirectional variable frequency fan set (41) and the second bidirectional variable frequency fan set (42) can determine a first central axis (91), and the third bidirectional variable frequency fan set (43) and the fourth bidirectional variable frequency fan set (44) can determine a second central axis (92).
10. The variable-frequency ventilation system which is arranged in a factory workshop and can exhaust air during accidents at the same time as in claim 9 is characterized in that: four pollutant concentration response warning probes arrange respectively in four intersection points department of first central line (93), second central line (94), first axis (91) and second axis (92), four pollutant concentration response warning probes all are connected with production safety controller (8) through signal transmission line (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JP2005003470A (en) * | 2003-06-11 | 2005-01-06 | Horiba Ltd | Device with function of ventilation |
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| CN111750480A (en) * | 2020-04-10 | 2020-10-09 | 航天凯天环保科技股份有限公司 | A subregion allies oneself with accuse clean system for factory building dust is administered |
| CN112601914A (en) * | 2018-09-21 | 2021-04-02 | 松下知识产权经营株式会社 | Space purifying system and space purifying method |
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| JP2005003470A (en) * | 2003-06-11 | 2005-01-06 | Horiba Ltd | Device with function of ventilation |
| CN201242238Y (en) * | 2008-07-15 | 2009-05-20 | 华为技术有限公司 | Ventilation system |
| CN104676809A (en) * | 2013-11-27 | 2015-06-03 | 中国建筑科学研究院 | Two-way new trend system of no pipeline formula |
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| CN111076384A (en) * | 2019-09-27 | 2020-04-28 | 红云红河烟草(集团)有限责任公司 | Method for diagnosing and controlling temperature and humidity of workshop based on thermal imaging technology |
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