CN212842045U - Double-tube ventilation device for limited space operation - Google Patents
Double-tube ventilation device for limited space operation Download PDFInfo
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- CN212842045U CN212842045U CN201922333773.2U CN201922333773U CN212842045U CN 212842045 U CN212842045 U CN 212842045U CN 201922333773 U CN201922333773 U CN 201922333773U CN 212842045 U CN212842045 U CN 212842045U
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Abstract
The utility model discloses a double-tube ventilation device for limited space operation, which comprises a floating island mechanism, an air blowing mechanism, an air exhaust mechanism and a monitoring mechanism; the first air outlet end of the air blowing mechanism is communicated with the floating island mechanism; when the double-pipe ventilation device for the operation in the limited space is used, the first air inlet end of the air blowing mechanism is arranged outside the limited space, the first air outlet end of the air blowing mechanism extends into the limited space and is communicated with the floating island mechanism, the second air outlet end of the air exhaust mechanism is arranged outside the limited space, and the second air inlet end of the air exhaust mechanism extends into the limited space. The utility model discloses in, the device can be fully mix the gas in the finite space, takes out from, and fresh air gets into the finite space in quick, the replacement atmosphere simultaneously effectively, guarantees operator, rescue personnel's life safety in the finite space, the device simple structure, convenient operation easily extensively promotes, but greatly reduced finite space operation personnel's death rate.
Description
Technical Field
The utility model belongs to the technical field of equipment of finite space operation, emergency rescue, in particular to double-barrelled ventilation unit of finite space operation.
Background
In 2019, 15 months, a paper making enterprise in Dongguan city cleans a sewage pool, namely, a faint accident occurs in operation in a limited space, and a person participates in rescue, which causes a serious accident that 7 people die. In less than three months, death accidents similar to those in limited space occur again and again. The number of similar death accidents exceeds one hundred every year. The reasons for this are many, but the most fundamental reason is that the air in the sewage pool, i.e. the limited space, contains toxic and harmful gases or oxygen-poor and bad air, which is the main cause of the death accident of people. If the air in the limited space of the sewage pool is the safe breathable air for human body, the death accident caused by the inhalation of bad air or oxygen deficiency of people can not be caused.
Therefore, as long as toxic and harmful gas or anoxic bad air does not exist in the limited space, the death of people due to breathing can not be caused. Therefore, the operation in the limited space is safe, and the effective ventilation is the key point.
The existing ventilation technology for the limited space is, for example, the standard of NFPA350 in the United states, and generally adopts a blower to pass through a hose, and the hose penetrates into the operation range of the limited space to blow normal air in the atmosphere into the limited space, so that toxic, harmful or anoxic and poor air in the limited space is forced to be discharged. Or the blower uses the reverse method to pump out the bad air in the limited space. The ventilation mode of blowing and exhausting by using a single tube has a plurality of defects, the single tube blowing or exhausting often cannot form continuous effective replacement circulation due to insufficient and unsettled ventilation, or accumulation of bad gas at the corner position of a space structure, or continuous leakage source of the bad gas, the gas in the limited space can only be extracted from the air part close to the outlet position, most of the original oxygen-deficient bad air in the limited space can not be extracted, the harmful gas with the bottom layer heavier than the air in the limited space can not be extracted, the corner position in the limited space, sludge and other states, and toxic harmful gas or oxygen-deficient bad air still exists. Once the air in the confined space stops flowing or the flow is reduced or the poor air is not completely replaced, the poor air can cause injury and death of the operator due to breathing. The bad air in the limited space is the most basic cause of death of people due to breathing.
The common method is to sleeve or hang the blower on a hose, and in most cases, the air leakage phenomenon is certainly caused at the joint because the inlet or the outlet of the pump is connected with the pipeline instead of being tightly connected in a flange way. Because the air leakage is caused at the joint of the outlet of the blower and the hose, the air flow pressure is reduced, the air blown out by the blower cannot be blown into the limited space completely, and powerful positive pressure air cannot be generated, so that the original bad air in the limited space is squeezed into the atmosphere.
As long as the air in the limited space is safe and is air which accords with the breathing of the human body, the operating personnel can not inhale toxic and harmful gas or harmful air without oxygen deficiency, and the phenomenon of death caused by breathing can not occur.
The key point of the safe operation of the limited space lies in whether the operation space can be effectively ventilated, the fresh air in the atmosphere is injected, the poisonous, harmful and anoxic bad air can be discharged, the fresh air can be blown into each corner of the limited space, and the bad air can be continuously and effectively replaced. If the operation in a limited space is realized, the death chances of operators and rescue workers are greatly reduced.
In utility model patent application No. CN201520757560.1, a ventilation device is disclosed, which comprises: the support, throw the wind ware, exhaust pipe and relief pressure valve, throw the wind ware in air supply source and the container outside through the exhaust pipe intercommunication container, make the compressed air that is provided by the air supply source outside the container, obtain the malleation air back through the relief pressure valve decompression, get into through the exhaust pipe again and throw the wind ware, and then by throwing the wind ware in this malleation air of future discharges to the container, thereby provide fresh malleation air for the maintainer's in the container breathing zone, finally make the maintainer under the constraint of no additional equipment, carry out complicated maintenance work in the finite space, realize under the condition that does not influence the maintainer operation, reduce the maintainer because of the risk of toxic gas poisoning.
However, the ventilation device disclosed in the above utility model is to blow normal air into the limited space through a single hose, and the harmful gases or the oxygen deficient harmful air still exist in the states such as the bottom layer heavier than air in the limited space, the corner places in the limited space, or the sludge. Once the air in the limited space stops flowing or the flow is weakened or the poor air is not completely replaced, or a continuous harmful gas leakage source exists, the poor air can cause casualty accidents caused by breathing of operators.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a double-tube ventilation device for limited space operation, which can fully mix the gas in the limited space, and take out the gas, and simultaneously, quickly and effectively replace the fresh air in the atmosphere to enter the limited space, thereby ensuring the life safety of operators and rescue workers in the limited space.
Another object of the utility model is to provide a double-barrelled ventilation unit of finite space operation, simple structure, convenient operation easily extensively promotes, but greatly reduced finite space operation personnel's death chance.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a double-tube ventilation device for limited space operation, which comprises a floating island mechanism, an air blowing mechanism for blowing external fresh air into a limited space, an air extracting mechanism for extracting bad air from the limited space and a first monitoring mechanism for monitoring whether the air in the limited space is normal or not; the first monitoring mechanism is arranged on the floating island mechanism, the air blowing mechanism is provided with a first air inlet end and a first air outlet end, the air pumping mechanism is provided with a second air inlet end and a second air outlet end, a second monitoring mechanism is arranged at the port of the second air outlet end, and the first air outlet end of the air blowing mechanism is communicated with the floating island mechanism; when the double-pipe ventilation device for the limited space operation is used, the floating island mechanism is arranged in the limited space, the first air inlet end of the air blowing mechanism is arranged outside the limited space, the first air outlet end of the air blowing mechanism extends into the limited space and is communicated with the floating island mechanism, the second air outlet end of the air pumping mechanism is arranged outside the limited space, and the second air inlet end of the air pumping mechanism extends into the limited space. In the utility model, the floating island can be placed on the ground in a limited space or float on water, so as to prevent the first air outlet end from sinking into water or earth; the first monitoring mechanism can be used for monitoring whether air in the limited space is normal or not, when the first monitoring mechanism monitors that the air is normal, the first monitoring mechanism is compared with the second monitoring mechanism, and after the air is monitored by the second monitoring mechanism, related operating personnel or non-respiratory protection personnel can enter the limited space operation, and if the first monitoring mechanism monitors that the air is abnormal, the personnel in the limited space can be timely withdrawn, so that the safety of the personnel can be better guaranteed; the blowing mechanism blows external normal nontoxic harmless fresh air into the limited space through the floating island mechanism through the first air inlet end and the first air outlet end, meanwhile, the air in the limited space is stirred, the air forms turbulent flow, other original gases heavier than the air are disturbed and float, the disturbed and floating gas is pumped out through the second air inlet end of the air pumping mechanism, then the gases are led out to the external space through the second air outlet end, and the safety gas monitored by the second monitoring mechanism on the second air outlet end is the safety gas which is used for confirming that the gases in the limited space are safe. Through the setting, gas in the limited space can be fully stirred and can be taken out, fresh air in the atmosphere can be quickly and effectively replaced to enter the limited space, the life safety of operators and rescue workers in the limited space is ensured, the double-pipe ventilation device for the operation in the limited space has a simple structure, the escape of the operators in the limited space or the exit of the rescue workers is not influenced, the operation is convenient, the wide popularization is easy, and the death opportunity of the operators in the limited space can be greatly reduced.
Furthermore, the blowing mechanism comprises a blowing pump, a first pipeline and a first connecting flange, the first air inlet end and the first air outlet end are arranged at two ends of the first pipeline, the blowing pump and the first pipeline are connected in a sealing mode through the first connecting flange, and the blowing pump is arranged at a position close to the first air inlet end. The utility model discloses in, whether the pump of blowing can blow in fresh gas effectively limited space is very important, can effective, ventilate fast, whether the key lies in the junction of pump of blowing and pipeline whether inseparable to and whether the pipeline is damaged or blocks up, the utility model discloses a first pipeline and second pipe connection all adopt flange formula zonulae occludens, and the mode of non-bandage or couple to can guarantee that can not take place the pump of blowing air stream effective, get into the limited space completely before, produce the leakage, can't obtain fresh air fast in causing the limited space, the limited space has the potential safety hazard that has bad gas this moment.
Furthermore, the air exhaust mechanism comprises an air exhaust pump, a second pipeline and a second connecting flange, the second air inlet end and the second air outlet end are arranged at two ends of the second pipeline, the air exhaust pump and the second pipeline are connected and communicated through the second connecting flange, the air exhaust pump is arranged at a position close to the second air outlet end, the second air inlet end of the second pipeline is hung in a limited space in a hanging mode, and the position of the first air outlet end in the limited space is lower than that of the second air inlet end. In the utility model, whether the air pump can effectively pump the bad gas out of the limited space is very important, whether the effective key lies in the connection part of the air pump and the pipeline, and whether the pipeline is damaged or blocked, the utility model adopts the flange type tight connection through the second connecting flange, rather than the mode of a bandage or a hook, which can ensure that the leakage before the air flow of the air pump is not pumped out of the limited space can not happen, and the use is safer; through the position setting of first end of giving vent to anger and second inlet end, can stir the gas in the finite space more fully, take out and leave, simultaneously quick, replace fresh air in the atmosphere effectively and get into the finite space, guarantee operator, rescue personnel's life safety in the finite space.
Further, chinampa mechanism is including floating pad and pendulum to the device, the bottom surface at finite space is placed to the floating pad, the pendulum is fixed on the floating pad to the device, the first end of giving vent to anger is linked together to the device with the pendulum, the pendulum is to being provided with the fan blade in the device, the pendulum can carry out the level to the device through prior art's control and rotate, the fan blade can carry out the vertical or horizontal hunting through prior art's control to produce irregular rotation direction, irregular slew velocity and irregular rhythm's wind pressure, stir the gas heavier than the air and produce turbulent air current than the gas that the air is lighter and make it float. The utility model discloses in, gas blowing device blows outside fresh air to the pendulum through the first end of giving vent to anger when to the device, the pendulum lets the air current swing rotatory with and self rotation to the device through the swing of fan blade, the air current produces the disorder, or strong or weak, different space internal gas pressure or height or low, gaseous irregularly compressed diffusion, can all disturb the harmful gas that hides at the corner and float, then, through unsettled second inlet end, the poisonous and harmful gas that will mix and float and the bad air of oxygen deficiency are taken out from the finite space, fresh air gets into the finite space in the replacement atmosphere effectively, guarantee operator in the finite space, the life safety of rescue personnel.
Further, first monitoring mechanism is including being used for monitoring whether normal first monitor of air in the finite space and the alarm that is used for sending alarm signal, first monitor is connected with the alarm communication, first monitor all sets up on the floating mat with the alarm. The utility model discloses in, through the setting of first monitor can real-time supervision limited space in the air quality, when the first monitor monitors that the air in the limited space is unusual, send unusual signal to the alarm, the alarm sends alarm signal, informs the operating personnel in the limited space to evacuate as soon as possible, can better guarantee operating personnel's safety; first monitor and alarm are prior art, can realize above-mentioned function can.
Furthermore, a communication device with a signal amplification function or a relay function is arranged on the floating mat. In the utility model, because the communication signal in the limited space may be shielded or the signal is weak and cannot be communicated to the ground, the communication device with the signal amplification function or the relay function can be communicated up and down by using the pipeline channel, thereby better ensuring the safety of the operating personnel; the communication device is the prior art, and can realize the functions.
Further, the second monitoring mechanism comprises a second monitor for comparing the measured gas concentration of the first monitor. The detection of gas safety by the first monitor on the first monitoring mechanism is not entirely representative of the safety of gas in confined air. The gas is monitored to be safe through a second monitor on a second monitoring mechanism on the second gas outlet port so as to represent that the gas in the limited space is truly safe. Because, part of the undesirable gas floats in a higher position than air is lighter. The first monitor on the first monitoring mechanism monitors the gas with higher floating. Only after the gas monitored by the first monitor on the first monitoring mechanism is compared with the gas monitored by the second monitor on the second monitoring mechanism, the gas is the same safe gas, and the data are basically consistent, so that the safe operation can be realized. The second monitor is prior art, can realize above-mentioned function can.
The utility model has the advantages that: compared with the prior art, in the utility model, the floating island can be placed on the ground in a limited space or float on water, so as to prevent the first air outlet end from falling into water or muddy mud; the first monitoring mechanism can be used for monitoring whether air at a lower position in a limited space is normal or not, when the first monitoring mechanism monitors that the air is normal, and when the air is compared with the air monitored by the second monitoring mechanism to be normal, related operators or persons without respiratory protection can enter the limited space operation, and if the first or second monitoring mechanism monitors that the air is abnormal, the persons in the limited space can be timely withdrawn, so that the safety of the persons can be better guaranteed; the blowing mechanism blows the normal, nontoxic and harmless fresh air outside into the limited space through the floating island mechanism through the first air inlet end and the first air outlet end, meanwhile, the air in the limited space is stirred, the air forms turbulent flow, other gases which are heavier than the air are disturbed and floated, the disturbed and floated gases are pumped out through a second air inlet end of the air pumping mechanism, then the gas is led out to the external space through the second gas outlet end, the gas in the limited space can be fully stirred and extracted through the arrangement, simultaneously, the fresh air in the atmosphere is quickly and effectively replaced to enter the limited space, the life safety of operators and rescue workers in the limited space is ensured, the double-pipe ventilation device for the limited space operation has the advantages of simple and effective structure, no influence on escape of limited space operation personnel or entry and exit of rescue personnel, convenient operation, easy and wide popularization and capability of greatly reducing the death chance of the limited space operation personnel.
Drawings
Fig. 1 is a schematic view of an embodiment of a limited space operation double-pipe ventilation apparatus implemented by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a double-tube ventilation device for limited space operation, which comprises a floating island mechanism 1, an air blowing mechanism 2 for blowing fresh air from outside into a limited space 100, an air pumping mechanism 3 for pumping out bad air from the limited space 100, and a first monitoring mechanism (not shown) for monitoring whether the air in the limited space 100 is normal; the first monitoring mechanism (not shown in the figure) is arranged on the floating island mechanism 1, the air blowing mechanism 2 is provided with a first air inlet end 10 and a first air outlet end 20, the air pumping mechanism 3 is provided with a second air inlet end 30 and a second air outlet end 40, the port of the second air outlet end 40 is provided with a second monitoring mechanism (not shown in the figure), and the first air outlet end 20 of the air blowing mechanism 2 is communicated with the floating island mechanism 1; when the double-pipe ventilation device for the limited space operation is used, the floating island mechanism 1 is arranged in the limited space 100, the first air inlet end 10 of the air blowing mechanism 2 is arranged outside the limited space 100, the first air outlet end 20 of the air blowing mechanism 2 extends into the limited space 100 and is communicated with the floating island mechanism 1, the second air outlet end 40 of the air pumping mechanism 3 is arranged outside the limited space 100, and the second air inlet end 30 of the air pumping mechanism 3 extends into the limited space 100. In the present invention, the floating island can be placed on the ground in the limited space 100 or float on the water, so as to prevent the first air outlet end 20 from being trapped in the water or the soil; the first monitoring mechanism (not shown) can be used for monitoring whether the air in the limited space 100 is normal or not, when the first monitoring mechanism (not shown) monitors that the air is normal, after the air is compared with the air monitored by the second monitoring mechanism (not shown), and after the air meets the health standard of a human body, relevant operating personnel or persons without respiratory protection can enter the limited space 100 for operation, if the first monitoring mechanism (not shown) monitors that the air is abnormal, the personnel in the limited space 100 can be timely withdrawn, and the personnel safety can be better guaranteed; the blowing mechanism 2 blows external normal nontoxic harmless fresh air into the limited space 100 through the floating island mechanism 1 through the first air inlet end 10 and the first air outlet end 20, simultaneously stirs the air in the limited space 100, the air forms turbulent flow, other gases heavier than the air are disturbed and floated, the disturbed and floated gas is pumped out through the second air inlet end 30 of the air pumping mechanism 3 and then is led out to the external space through the second air outlet end 40, and a second monitoring mechanism (not shown) on the second air outlet end 40 monitors that the safe gas is the gas in the limited space 100 which is confirmed to be safe. Through the setting, the gas in the limited space 100 can be fully stirred and can be taken out, meanwhile, the fresh air in the atmosphere can be quickly and effectively replaced to enter the limited space 100, the life safety of operators and rescue workers in the limited space 100 is ensured, the double-pipe ventilation device for the limited space operation is simple in structure, the escape of the operators in the limited space 100 or the exit of the rescue workers are not influenced, the operation is convenient, the wide popularization is easy, and the death chance of the operators in the limited space 100 can be greatly reduced.
In this embodiment, the air blowing mechanism 2 includes an air blowing pump 21, a first pipe 22 and a first connecting flange (not shown), the first air inlet end 10 and the first air outlet end 20 are disposed at two ends of the first pipe 22, the air blowing pump 21 and the first pipe 22 are hermetically connected and communicated through the first connecting flange (not shown), and the air blowing pump 21 is disposed at a position close to the first air inlet end 10. The utility model discloses in, whether the pump 21 of blowing can blow in limited space 100 with fresh gas effectively is very important, can be effective, ventilate fast, and whether the key lies in the junction of pump 21 and pipeline closely to and whether the pipeline is damaged or blocks up, the utility model discloses a first pipeline and second pipe connection all adopt flange formula zonulae occludens, and the mode of non-used bandage or couple to can guarantee that can not take place that the pump 21 air current of blowing is effective, before getting into limited space 100 completely, produce the leakage, can't obtain fresh air fast in the limited space 100, limited space 199 has the potential safety hazard that has bad gas this moment.
In practical applications, the impeller of the blower 21 may be centrifugal, axial or hybrid; the first pipe 22 can be a flexible hose pipe, the first outlet end 20 is disposed at the bottom of the confined space 100, and the first outlet end 20 can be parallel to the environment plane.
In this embodiment, the air pumping mechanism 3 includes an air pumping pump 31, a second pipeline 32 and a second connecting flange (not shown), the second air inlet end 30 and the second air outlet end 40 are disposed at two ends of the second pipeline 32, the air pumping pump 31 and the second pipeline 32 are connected and communicated through the second connecting flange (not shown), the air pumping pump 31 is disposed at a position close to the second air outlet end 40, the second air inlet end 30 of the second pipeline 32 is suspended in the limited space 100, and the position of the first air outlet end 20 in the limited space 100 is lower than that of the second air inlet end 30. In the present invention, whether the air pump 31 can effectively pump the bad gas out of the limited space 100 is very important, and whether the effective key lies in the connection between the air pump 31 and the pipeline, and whether the pipeline is damaged or blocked, the present invention adopts the flange type tight connection through the second connecting flange (not shown), rather than the mode of binding band or hook, which can ensure that the air flow of the air pump 31 is not leaked before the air pump takes out the limited space 100, and the use is safer; through the position arrangement of the first air outlet end 20 and the second air inlet end 30, the gas in the limited space 100 can be more fully stirred and extracted, and meanwhile, the fresh air in the atmosphere can be quickly and effectively replaced to enter the limited space 100, so that the life safety of operators and rescue workers in the limited space 100 is ensured.
In practical applications, the impeller of the suction pump 31 may be of the centrifugal type, axial type or hybrid type; the second pipe 32 can be a flexible hose pipe, and the second air outlet end 40 can be suspended in the limited space 100; the blower pump 21 is opposite to the impeller of the suction pump 31; the power of the blowing pump 21 or the air pump 31 can be alternating current, direct current or oil gas power machine, or hydraulic, pneumatic or hydraulic power machine. It may be an electric motor, or an internal combustion engine, or other transmission. Can be one lifting force or a plurality of linkage. The air pump 31 and the blower pump 21 may be provided with power machines, respectively. The power of the blower pump 21 may be integrated with the pump or may be separate from the pump. The power of the air pump 31 may be integrated with the pump or may be separate from the pump.
In practical applications, the second outlet 40 is suspended in the confined space 100 for air extraction. The first air outlet end 20 is arranged on the floating island structure 1. The two may also be interchanged. The first conduit 22 or the second conduit 32 may be flexible or rigid.
In this embodiment, the floating island mechanism 1 includes a floating mat and a swinging device, the floating mat is placed on the bottom surface of the limited space 100, the swinging device is fixed on the floating mat, the first air outlet end 20 is communicated with the swinging device, a fan blade is arranged in the swinging device, the swinging device can horizontally rotate under the control of the prior art, the fan blade can swing up and down or left and right under the control of the prior art, and an irregular rotating direction, an irregular rotating speed and an irregular rhythm wind pressure are generated, and the gas heavier than air and the gas lighter than air are stirred to generate a turbulent airflow to float. The utility model discloses in, gas blowing device blows outside fresh air to the pendulum through the first end 20 of giving vent to anger when to the device, the pendulum lets the air current swing rotatory with and self rotation to the device through the swing of fan blade, the air current produces the disorder, or strong or weak, different space internal gas pressure or height or low, gaseous irregularly compressed diffusion, can all disturb the harmful gas that hides at the corner and float, then, through unsettled second inlet end 30, the harmful gas who will mix showy poisonous and harmful gas and the bad air of oxygen deficiency are taken out from finite space 100, replace fresh air in the atmosphere effectively and get into finite space 100, guarantee operator in the finite space 100, the life safety of rescue personnel.
In practical applications, the floating mat is made of various materials that can float on water, and is used for supporting the first air outlet end 20 without the first air outlet end 20 being trapped in water or soil. In addition, the air flow disturbing device of the first air outlet end 20 can be arranged on the floating mat. The floating cushion can be provided with devices for communication, monitoring, alarming and the like. The first outlet end 20 is ported with an air flow oscillating device to agitate the air in the confined space 100. The heavier than air gas no longer deposits and settles on the bottom layer of the confined space 100. Through port air current pendulous device, the air forms the sinuous flow, and other gas that original is heavier than the air is floated by the disturbance, and the floating gas of disturbance is taken out to unsettled bleed-off pipeline under the effect of aspiration pump 31, leading-in atmosphere.
In practical application, the swinging device can utilize the power of the blowing pressure and can also utilize electric drive. For example, when the wind blows the swinging device, the upper part swings horizontally on the base of the swinging device. I.e. in a rocking manner. The upper part is provided with a horizontal fan blade which is driven by power to move up and down. Namely, a closed mouth manner. The horizontal fan blades are arranged on the vertical disc. The disc may rotate in a vertical manner. The fan blades are gradually inclined from the horizontal position by the rotation of the circular disc. The horizontal fan blades are rotated by the disc, so that the airflow is distorted. Through the horizontal swing of the upper part, the rotation of the disc, the up-and-down movement of the fan blades and the stirring of air, the air is irregularly floated, and the air cleaner is beneficial to quickly pumping out bad air in the limited space 100.
In this embodiment, the first monitoring mechanism (not shown) includes a first monitor for monitoring whether the air in the limited space 100 is normal or not and an alarm for sending an alarm signal, the first monitor is in communication connection with the alarm, and both the first monitor and the alarm are disposed on the floating mat. In the utility model, the air quality in the limited space 100 can be monitored in real time through the arrangement of the first monitor, when the first monitor monitors that the air in the limited space 100 is abnormal, an abnormal signal is sent to the alarm, the alarm sends out an alarm signal to inform the operating personnel in the limited space 100 to evacuate as soon as possible, and the safety of the operating personnel can be better guaranteed; first monitor and alarm are prior art, can realize above-mentioned function can.
In practical applications, the first monitor and the second monitor may be gas monitoring, leakage monitoring, or life monitoring. And the method can be electronic, infrared, video and the like. The first monitor and the second monitor can be fixed or movable; alarms are emergency notification devices that are responsible for underground or ground, or other emergency situations. It can be an acoustic and optical alarm structure.
In this embodiment, a communication device having a signal amplification function or a relay function is further provided on the floating mat. In the utility model, because the communication signal in the limited space 100 may be shielded or the signal is weak and cannot be communicated to the ground, the communication device with signal amplification function or relay function can be communicated up and down by using the pipeline channel, thereby better ensuring the safety of the operating personnel; the communication device is the prior art, and can realize the functions.
In practical application, the communication device is a method for solving the problem that underground communication signals are shielded and cannot be communicated with the ground. Can be used as a signal transfer amplifier. The communication signal can be a wired communication signal or a wireless communication signal.
In the limited space 100, most of the telecommunication signals are shielded, and the ground guardian cannot communicate with the operating personnel and the rescue personnel in the limited space 100. At this time, the communication device on the floating mat can be used for communication.
The rescue personnel in the limited space 100 must wear the protective breathing apparatus. Such as air respirators and the like. However, they are often abandoned because the equipment is heavy and unable to enter narrow passageways, or because the air respirators are too short to perform in a short time. This kind of situation can be solved under the normal operation state of the device of the utility model.
In this embodiment, the second monitoring mechanism (not shown) includes a second monitor (not shown) for comparing the measured gas concentration of the first monitor (not shown). The safety of the gas detected by a first monitor (not shown) on a first monitoring mechanism (not shown) does not fully represent that the gas in the confined atmosphere 100 is safe. The gas is monitored to be safe by a second monitor (not shown) on a second monitoring mechanism (not shown) on the port of the second gas outlet end 40 to represent that the gas in the confined space 100 is truly safe. Because, part of the undesirable gas floats in a higher position than air is lighter. A first monitor (not shown) on a first monitoring mechanism (not shown) monitors the gas that is floating higher. Only when the gas monitored by the first monitor (not shown) on the first monitoring mechanism (not shown) is compared with the gas monitored by the second monitor (not shown) on the second monitoring mechanism (not shown), the gas is the same safe gas, and the data are basically consistent, the safe operation can be realized. The second monitor (not shown) is prior art and can perform the above functions.
The utility model also provides a double-barrelled ventilation unit's of finite space operation working method, including following step:
step S1, before the operation of the limited space 100 is started, the blowing mechanism 2 and the air pumping mechanism 3 are installed near the entrance and exit of the operated limited space 100, then the first air outlet end 20 of the blowing mechanism 2 is connected with the floating cushion, the first air outlet end 20 is communicated with the swinging device fixed on the floating cushion, then the floating cushion with the swinging device, the first monitoring mechanism (not shown) and the first air outlet end 20 fixed is placed in the limited space 100, and the first monitoring mechanism (not shown) monitors the air quality in the limited space 100 in real time;
step S2, placing the second air inlet 30 of the air extracting mechanism 3 into the limited space 100, and suspending the second air inlet in the limited space 100;
step S3, starting the blowing pump 21 to blow fresh air into the limited space 100 through the first air outlet end 20; simultaneously, the air pump 31 is started, and the bad air in the limited space 100 is pumped out to the external space through the second air inlet end 30 after being disturbed by the operation of the swinging device;
in step S4, when the first monitor (not shown) on the floating mat displays that the gas meets the breathing standard of the human body, and the second monitor mechanism monitors that the gas meets the breathing standard of the human body, the device can enter the confined space 100 to start operation. By comparing the concentration of the hazardous gas monitored by the first monitoring mechanism (not shown) with the concentration of the hazardous gas monitored by the second monitoring mechanism (not shown), it can be found whether there is a continuous burst of hazardous gas in the confined space 100.
The utility model discloses in, through above-mentioned operating procedure, constantly blow in the finite space 100 with normal air in, constantly take bad air out, gas is by the circulation exchange, and a large amount of fresh air gets into and has diluted bad air in the finite space 100 very fast, and air accords with human respiratory safe air in the finite space 100, just can the safety work, if there is a small amount of poisonous and harmful gas's continuous release source, also can be diluted by continuous blowing ventilation mode, greatly reduced harm degree. The air in the limited space 100 can quickly and effectively reach the air standard of safe operation.
In this embodiment, in step S3, when the blower pump 21 is started, the airflow from the first air inlet end 10 to the first air outlet end 20 follows the first pipe 22, the airflow at the first air outlet end 20 pushes the swinging device, the swinging device generates horizontal rotation, and the blades also perform vertical swinging motion, and the air moves disorderly and disorderly in the limited space 100 due to irregular airflow, strong and weak stirring bad air. Meanwhile, external fresh gas is continuously input to generate certain pressure, so that the gas moves more actively; meanwhile, the air pump 31 is started to make the disordered bad air flow from the second air inlet end 30 to the second air outlet end 40 along with the second pipeline 32, so that the bad air is continuously pumped out, negative pressure is generated near the second air inlet end 30, and a large amount of air is quickly pumped out. The utility model discloses in, through above-mentioned setting, can stir the interior gas of finite space 100 fully, take out from, fresh air gets into finite space 100 in the while quick, the replacement atmosphere effectively, guarantees operator, rescuer's life safety in the finite space 100.
In this embodiment, when the first monitor and/or the second monitor monitors that the air in the limited space 100 is abnormal, the first monitor and/or the second monitor sends an abnormal signal to the alarm, and the alarm sends an alarm signal to notify the operator in the limited space 100 to evacuate as soon as possible or to not allow the operator to enter the limited space for operation. The utility model discloses in, guarantee operation personnel's that can be better safety is set up through the aforesaid.
In order to reduce the space occupied by the pipeline, the pipeline enters the limited space part, and the first air inlet pipe is sleeved in the second air inlet pipe sleeve. The connection between the air pump and the air blowing pump adopts a Y-shaped structure.
In this embodiment, the blowing and suction pumps and the pipe joints are not generally connected to generate a gap leakage, but are connected in a flange-type sealing manner, which is very important. Only then is it possible to blow fresh air into the confined space 100 more efficiently. Meanwhile, the poor gas can be effectively pumped out of the limited space 100 due to the flange-type phase sealing connection mode.
The beneficial effects of the utility model reside in that: compared with the prior art, in the utility model, the floating island can be placed on the ground in a limited space or float on water, so as to prevent the first air outlet end from falling into water or muddy mud; the first monitoring mechanism can be used for monitoring whether air at a lower position in a limited space is normal or not, when the first monitoring mechanism monitors that the air is normal, and when the air is compared with the air monitored by the second monitoring mechanism to be normal, related operators or persons without respiratory protection can enter the limited space operation, and if the first or second monitoring mechanism monitors that the air is abnormal, the persons in the limited space can be timely withdrawn, so that the safety of the persons can be better guaranteed; the blowing mechanism blows the normal, nontoxic and harmless fresh air outside into the limited space through the floating island mechanism through the first air inlet end and the first air outlet end, meanwhile, the air in the limited space is stirred, the air forms turbulent flow, other gases which are heavier than the air are disturbed and floated, the disturbed and floated gases are pumped out through a second air inlet end of the air pumping mechanism, then the gas is led out to the external space through the second gas outlet end, the gas in the limited space can be fully stirred and extracted through the arrangement, simultaneously, the fresh air in the atmosphere is quickly and effectively replaced to enter the limited space, the life safety of operators and rescue workers in the limited space is ensured, the double-pipe ventilation device for the limited space operation has the advantages of simple and effective structure, no influence on escape of limited space operation personnel or entry and exit of rescue personnel, convenient operation, easy and wide popularization and capability of greatly reducing the death chance of the limited space operation personnel.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A double-pipe ventilation device for operation in a limited space is characterized by comprising a floating island mechanism, an air blowing mechanism, an air pumping mechanism and a first monitoring mechanism, wherein the air blowing mechanism is used for blowing external fresh air into the limited space; the first monitoring mechanism is arranged on the floating island mechanism, the air blowing mechanism is provided with a first air inlet end and a first air outlet end, the air pumping mechanism is provided with a second air inlet end and a second air outlet end, a second monitoring mechanism is arranged at the port of the second air outlet end, and the first air outlet end of the air blowing mechanism is communicated with the floating island mechanism; when the double-pipe ventilation device for the limited space operation is used, the floating island mechanism is arranged in the limited space, the first air inlet end of the air blowing mechanism is arranged outside the limited space, the first air outlet end of the air blowing mechanism extends into the limited space and is communicated with the floating island mechanism, the second air outlet end of the air pumping mechanism is arranged outside the limited space, and the second air inlet end of the air pumping mechanism extends into the limited space.
2. The double-pipe ventilation device for limited space operation according to claim 1, wherein the blowing mechanism comprises a blowing pump, a first pipeline and a first connecting flange, the first air inlet end and the first air outlet end are arranged at two ends of the first pipeline, the blowing pump and the first pipeline are connected and communicated through the first connecting flange, and the blowing pump is arranged at a position close to the first air inlet end.
3. The double-pipe ventilation device for limited space operation according to claim 1, wherein the air exhaust mechanism comprises an air exhaust pump, a second pipeline and a second connecting flange, the second air inlet end and the second air outlet end are arranged at two ends of the second pipeline, the air exhaust pump and the second pipeline are connected and communicated through the second connecting flange, the air exhaust pump is arranged at a position close to the second air outlet end, the second air inlet end of the second pipeline is suspended in the limited space, and the position of the first air outlet end in the limited space is lower than that of the second air inlet end.
4. The double-pipe ventilation device for limited space operation according to claim 2, wherein the floating island mechanism comprises a floating mat and a swinging device, the floating mat is placed on the bottom surface of the limited space, the swinging device is fixed on the floating mat, the first air outlet end is communicated with the swinging device, a fan blade is arranged in the swinging device, the swinging device can horizontally rotate, and the fan blade can swing up and down or left and right and generate wind pressure, so that the air flow is stirred to float.
5. The double-pipe ventilation device for limited space operation according to claim 4, wherein the first monitoring mechanism comprises a first monitor for monitoring whether the air in the limited space is normal or not and an alarm for sending an alarm signal, the first monitor is in communication connection with the alarm, and the first monitor and the alarm are both arranged on the floating mat.
6. The double-barreled ventilating device for limited space operation according to claim 4, wherein a communication means having a signal amplifying function or a relay function is further provided on the floating mat.
7. A limited space operation dual duct ventilator according to claim 4 in which the second monitoring means includes a second monitor for comparing the measured gas concentration of the first monitor.
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| CN201922333773.2U CN212842045U (en) | 2019-12-23 | 2019-12-23 | Double-tube ventilation device for limited space operation |
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| CN201922333773.2U CN212842045U (en) | 2019-12-23 | 2019-12-23 | Double-tube ventilation device for limited space operation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959031A (en) * | 2021-10-19 | 2022-01-21 | 四川省安全科学技术研究院 | Ventilation device for limited space liquid fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959031A (en) * | 2021-10-19 | 2022-01-21 | 四川省安全科学技术研究院 | Ventilation device for limited space liquid fluid |
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