A multi-channel limited space safety intelligent construction device and its use method

Abstract

The present invention discloses a multi-channel confined space safe intelligent construction device and its use method, comprising a ventilation mechanism, a conversion mechanism, and a telescopic tube. The ventilation mechanism is connected to the telescopic tube via a mounting mechanism. The ventilation mechanism drives the telescopic tube to discharge gas from different construction spaces and exchange gas between different construction spaces, so that gas at the corners of the construction spaces is blown out by the exchanged gas. The conversion mechanism is arranged on the mounting mechanism and is used to change the gas output flow rate of the telescopic tube, thereby generating an instantaneous impact force at the corners of construction spaces at different locations. The multiple sets of telescopic tubes provided by the present invention can simultaneously perform gas extraction detection on multiple sets of confined spaces. During the detection process, air can be first blown into the confined space, and the conversion mechanism can be used to change the gas flow rate and flow rate of the three sets of telescopic tubes, thereby generating a larger impact force, thereby quickly blowing out gas at the corners.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a multi-channel confined space safe intelligent construction device and a use method thereof. Background Art

[0002] Confined space work refers to work performed in enclosed or partially enclosed spaces, such as underground pipelines, storage tanks, cellars, tunnels, etc. These spaces often present dangers such as poor air circulation, lack of oxygen, and accumulation of toxic and hazardous gases, which greatly threaten the safety of workers.

[0003] When working in existing confined spaces, it is necessary to analyze the gas content in the confined space. For example, Chinese Patent (CN212483077U) discloses a gas detection device suitable for confined spaces. This utility model relates to the technical field of confined space gas detection. The device includes a central processing unit, an SOS unit, a response unit, a display unit, a communication unit, a power supply unit, a positioning unit, a video monitoring unit, a sampler circuit 1, an air pump, a sampling air circuit 2, an A / D conversion unit, a sensor, and a voltage source. The data signal output of the sampler circuit 1 is connected to the data signal input of the air pump, which is connected to the data signal input of the sampling air circuit 2. The data signal output of the sampling air circuit 2 is connected to the data signal input of the sensor, and the control signal output of the central processing unit is connected to the control signal input of the air pump. This utility model uses the sampler circuit 1, air pump, and sampling air circuit 2 to detect gas uncertainty during work in a confined space, enabling continuous gas monitoring. It can be seen from the above content that in the process of gas detection in a confined space, the existing technology can only detect harmful gases in the space, and multiple detections are required during the detection process to determine whether the harmful gases in the space still exist. Therefore, an additional set of exhaust devices are required to extract them. When the existing exhaust device is in use, if there is a corner position in the confined space, the extraction effect of simply using the exhaust device is not good, so it may cause the gas in the confined space to be unable to be quickly removed. In addition, the existing exhaust device only extracts through a single channel during the extraction process. When there are multiple spaces in the confined space, the device needs to be fully placed, which wastes a lot of manpower and material resources to a certain extent. For this reason, we propose a multi-channel confined space safety intelligent construction device and a method for using it. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-channel confined space safe intelligent construction device and its use method, so as to solve the problems in the background technology that harmful gases in the corners of confined spaces cannot be completely eliminated, and that the gas in the confined space cannot be completely safe and multiple spaces cannot work simultaneously.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a multi-channel confined space safe intelligent construction device, comprising:

[0006] An installation mechanism, the installation mechanism is used to fix and install three sets of telescopic tubes, and the telescopic tubes extend into the interior of the construction space at different positions;

[0007] A ventilation mechanism, wherein the ventilation mechanism is connected to the telescopic tube through the mounting mechanism, and the ventilation mechanism drives the telescopic tube to discharge the internal gas of different construction spaces and exchange the gas between different construction spaces, so that the gas in the corners of the construction space is blown out by the exchanged gas;

[0008] A conversion mechanism, which is disposed on the mounting mechanism and is used to change the gas output flow rate of the telescopic tubes, so that the gas flow rate and flow rate of the multiple groups of telescopic tubes increase sequentially, thereby generating an instantaneous impact force on the corners of the construction space at different positions;

[0009] A gas detection sensor interface, which is fixedly connected to the ventilation mechanism through a three-way valve and is used to collect exhaust gas from the ventilation mechanism and detect and analyze the exhaust gas samples using a controller;

[0010] A gas temperature and humidity detector interface, which is fixedly connected to the ventilation mechanism through a three-way valve, and is used to collect exhaust gas from the ventilation mechanism and analyze the temperature and humidity of the exhaust gas sample using a controller;

[0011] a controller electrically connected to the gas detection sensor interface and the gas temperature and humidity detector interface, analyzing exhaust gas samples collected by the gas detection sensor interface and the gas temperature and humidity detector interface, and performing data conversion on the analyzed gas samples;

[0012] A battery pack is used to supply power to the controller, the ventilation mechanism and the conversion mechanism.

[0013] In the prior art, during the process of gas detection in a confined space, only harmful gases in the space can be detected, and multiple detections are required during the detection process to determine whether the harmful gases in the space still exist. Therefore, an additional set of exhaust devices is required to extract them. When the existing exhaust device is used, if there is a corner position in the confined space, the extraction effect of simply using the exhaust device is not good, so it may cause the gas in the confined space to be unable to be quickly removed. In addition, the existing exhaust device only extracts through a single channel during the extraction process, and when there are multiple spaces in the confined space, the device needs to be fully placed, which wastes a lot of manpower and material resources to a certain extent. The telescopic tube provided in the present invention can be extended into the confined space, and multiple sets of telescopic tubes can simultaneously perform gas extraction detection on multiple sets of confined spaces, and during the detection process, air can be blown into the confined space first, and the gas of the three sets of telescopic tubes can be changed by using a conversion mechanism. The volume flow and flow rate can form a larger impact force, thereby quickly blowing out the gas in the corner position, and the three sets of telescopic tubes are switched through the conversion mechanism to present three states of full open, semi-sealed and sealed, which can form an instantaneous impact force to rush out the harmful gas, and after a burst of gas is completely rushed out, the telescopic tubes are gradually converted to semi-sealed and sealed states, which can provide time for the gas with instantaneous impact force to mix with the harmful gas, and will not cause waste of instantaneous impact force gas, thereby improving the gas extraction efficiency to a certain extent, thereby facilitating the complete extraction of gas in the space, and then the extracted gas can use the gas detection sensor interface and the gas temperature and humidity detector interface to quickly detect and analyze the extracted gas. This gas extraction method improves the air extraction and air intake strength at corners, bends, etc., so that the air at the corners has a certain fluidity, thereby reducing the presence of turbid air in confined spaces, and further enhancing the safety of confined space construction.

[0014] As a further description of the above technical solution:

[0015] The ventilation mechanism includes an axial flow fan, a detection sampling tube and support legs. Two sets of support legs are fixedly installed on the bottom of the axial flow fan. A detection sampling tube is provided through the top of the support leg. The detection sampling tube is connected to the gas detection sensor interface and the gas temperature and humidity detector interface through a three-way valve and a connecting pipe.

[0016] As a further description of the above technical solution:

[0017] The mounting mechanism includes a diverter plate, a first reinforcement rod and a mounting plate. One end of the axial flow fan is fixedly connected to the diverter plate. One side of the diverter plate is fixedly connected to the mounting plate through multiple groups of first reinforcement rods. Three groups of telescopic tubes are fixedly installed on the mounting plate. One side of the telescopic tube is fixedly connected to the diverter plate through an elastic connecting tube.

[0018] As a further description of the above technical solution:

[0019] The conversion mechanism includes a pad, a positioning ring, a pressure plate, a driving motor and a runner. A pad is fixedly connected to one side of the diverter plate and located on the outside of the elastic connecting tube. A positioning ring is fixedly connected to one side of the diverter plate through multiple groups of second reinforcing rods. A telescopic rod is slidably connected to the positioning ring and corresponding to the positions of the three groups of elastic connecting tubes. One end of the telescopic rod is fixedly connected to an arc-shaped pressure plate. A driving motor is installed on one side of the mounting plate. The output end of the driving motor is fixedly connected to a runner. The outer surface of the runner is fixedly connected to a first cam that pushes the pressure plate to seal the elastic connecting tube. The outer surface of the runner is fixedly installed with a second cam that pushes the pressure plate to move and reduces the ventilation flow of the elastic connecting tube.

[0020] As a further description of the above technical solution:

[0021] It also includes a power supply converter, a storage box and a placement plate. The placement plate is fixedly installed on the top of the storage box. A sealing cover is hinged on one side of the storage box. A buffer pad is laid inside the sealing cover. A power supply interface electrically connected to an external DC power supply is provided on one side of the storage box. The controller and the battery pack are arranged inside the storage box. The gas detection sensor interface and the gas temperature and humidity detector interface are arranged on one side of the storage box. The power supply converter is fixedly installed inside the storage box. The power supply converter is used to convert the power supply mode of the controller, ventilation mechanism and conversion mechanism into DC power supply or battery pack power supply.

[0022] As a further description of the above technical solution:

[0023] A heat sink is fixedly installed inside the storage box and above the controller and the battery pack. Two sets of exhaust fans are fixedly installed on one side of the storage box and at positions corresponding to the heat sink.

[0024] As a further description of the above technical solution:

[0025] It also includes a detection display, which is placed on the placement board and electrically connected to the controller. The detection display is used to display the gas analysis result of the controller.

[0026] As a further description of the above technical solution:

[0027] It also includes an audible and visual alarm, which is electrically connected to the controller. When the controller detects that the content of harmful substances in the gas sample exceeds a threshold, the audible and visual alarm is triggered to sound an alarm.

[0028] As a further description of the above technical solution:

[0029] The method for using the multi-channel confined space safety intelligent construction device comprises the following steps:

[0030] Step 1: Set the working mode according to the construction space environment;

[0031] Step 2: Use the ventilation mechanism and telescopic tube to extract gas samples from the target construction space. When the controller detects harmful gases during the gas sample extraction process, the sound and light alarm will sound an alarm, and the gas extraction process at the target location will be carried out according to the corresponding working mode;

[0032] Step 3: The controller drives the ventilation mechanism to execute the gas extraction process. When the controller detects that the harmful gas content is lower than the set threshold, the sound and light alarm stops working and the gas extraction process is completed.

[0033] As a further description of the above technical solution:

[0034] The working mode set in the step 1 includes a first working mode and a second working mode;

[0035] The first working mode includes the following steps:

[0036] Step A1: Place multiple sets of telescopic tubes into different construction spaces, and control the ventilation mechanism to extract gas from the construction space under negative pressure according to the detection threshold set by the sound and light alarm;

[0037] Step A2: Use the battery pack to power the ventilation mechanism to circulate air and exchange gas in the construction space;

[0038] The second working mode includes the following steps:

[0039] Step B1: Controlling the operation of the conversion mechanism according to the working mode set by the controller;

[0040] Step B2: The battery pack is used to power the ventilation mechanism and the conversion mechanism, and the ventilation mechanism is used to continuously circulate and exchange air in the construction space. When extracting gas in the construction space, the conversion mechanism stops operating, and the three sets of telescopic tubes are in a fully open state. The harmful gas in the construction space is extracted within a set time. When the extraction stops during the set time, the conversion mechanism is started to operate. The conversion mechanism drives the three sets of telescopic tubes to switch between fully open, semi-open and sealed states respectively. When one set of telescopic tubes is in a fully open state, one of the other two sets of telescopic tubes is in a semi-open state, and the other is in a sealed state. In this way, the gas flow of the fully open telescopic tubes can be increased, forming a high-impact extraction or blowing action, and the working method in the above working mode is repeated.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] 1. The telescopic tubes provided in the present invention can be extended into the interior of a confined space, and multiple sets of telescopic tubes can simultaneously perform gas extraction detection on multiple sets of confined spaces. In the detection process, air can be blown into the confined space first, and the gas flow rate and flow rate of the three sets of telescopic tubes can be changed by using a conversion mechanism, so that a large impact force can be generated, thereby quickly blowing out the gas at the corner position. The three sets of telescopic tubes are switched by the conversion mechanism to present three states of full open, semi-sealed and sealed, thereby forming an instantaneous impact force to rush out the harmful gas, and after a stream of gas is completely rushed out, the telescopic tubes are gradually converted to semi-sealed. Sealed and sealed state, which can provide time for the gas with instantaneous impact force to mix with the harmful gas, and will not cause waste of instantaneous impact force gas, thereby improving the gas extraction efficiency to a certain extent, thereby facilitating the complete extraction of gas in the space, and then the extracted gas can be used to use the gas detection sensor interface and the gas temperature and humidity detector interface to quickly detect and analyze the extracted gas. This gas extraction method improves the air extraction and air intake strength at corners and bends, so that the air at the corners has a certain fluidity, thereby reducing the presence of turbid air in the confined space, and further enhancing the safety of confined space construction;

[0043] 2. This method of exhausting gases in confined spaces improves the efficiency of gas exhaust to a certain extent, and can simultaneously detect gases during the exhaust process, thereby ensuring that harmful gases in confined spaces are fully exhausted and no safety hazards are created;

[0044] 3. The device is easy to operate and can automatically realize the rapid discharge of gas in a limited space, which to a certain extent avoids excessive manual operation and reduces dependence on professional technicians. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0046] Figure 2 Schematic diagram of the system principle of the present invention;

[0047] Figure 3 It is a schematic diagram of the three-dimensional structure of the conversion mechanism of the present invention;

[0048] Figure 4 This is a schematic diagram of the first stereoscopic structure of the container of the present invention;

[0049] Figure 5 This is a second perspective structural diagram of the container of the present invention;

[0050] Figure 6 This is a schematic diagram of the internal structure of the storage box of the present invention.

[0051] In the figure: 1 controller, 2 ventilation mechanism, 3 mounting mechanism, 4 conversion mechanism, 5 battery pack, 6 power converter, 7 gas detection sensor interface, 8 gas temperature and humidity detector interface, 9 axial flow fan, 10 detection sampling tube, 11 support leg, 12 diverter plate, 13 first reinforcement rod, 14 mounting plate, 15 telescopic tube, 16 elastic connecting tube, 17 pad, 18 second reinforcement rod, 19 positioning ring, 20 telescopic rod, 21 pressure plate, 22 drive motor, 23 rotating wheel, 24 first cam, 25 second cam, 26 holding box, 27 placement plate, 28 detection display, 29 sealing cover, 30 buffer pad, 31 power interface, 32 heat sink, 33 exhaust fan. DETAILED DESCRIPTION

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0053] Example 1: Please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 6 The present invention provides a technical solution: a multi-channel limited space safety intelligent construction device, comprising:

[0054] A mounting mechanism 3, which is used to securely mount three sets of telescopic tubes 15, which extend into construction spaces at different locations;

[0055] The ventilation mechanism 2 is connected to the telescopic tube 15 through the mounting mechanism 3. The ventilation mechanism 2 drives the telescopic tube 15 to discharge the internal gas of different construction spaces and exchange the gas between different construction spaces, so that the gas in the corners of the construction space is blown out by the exchanged gas;

[0056] The conversion mechanism 4 is provided on the mounting mechanism 3 and is used to change the gas output flow rate of the telescopic tubes 15, so that the gas flow rate and flow rate of the multiple groups of telescopic tubes 15 increase sequentially, thereby generating an instantaneous impact force on the corners of the construction space at different positions;

[0057] A gas detection sensor interface 7, which is fixedly connected to the ventilation mechanism 2 via a three-way valve. The gas detection sensor interface 7 is used to collect exhaust gas from the ventilation mechanism 2 and detect and analyze the exhaust gas sample using the controller 1;

[0058] A gas temperature and humidity detector interface 8, which is fixedly connected to the ventilation mechanism 2 via a three-way valve. The gas temperature and humidity detector interface 8 is used to collect exhaust gas from the ventilation mechanism 2 and analyze the temperature and humidity of the exhaust gas sample using the controller 1;

[0059] A controller 1, the controller 1 being electrically connected to the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8, analyzing exhaust gas samples collected by the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8, and performing data conversion on the analyzed gas samples;

[0060] A battery pack 5 is provided to supply power to the controller 1 , the ventilation mechanism 2 and the conversion mechanism 4 .

[0061] Among them, the telescopic tubes 15 can be extended into the confined space, and multiple groups of telescopic tubes 15 can simultaneously perform gas extraction detection on multiple groups of confined spaces. Then the battery pack 5 supplies power to the entire device. In the detection process, the ventilation mechanism 2 can be used to blow air into the confined space first, and the conversion mechanism 4 can be used to change the gas flow and flow rate of the three groups of telescopic tubes 15, so that a larger impact force can be formed, thereby quickly blowing out the gas at the corner position, and the three groups of telescopic tubes 15 are switched by the conversion mechanism to present three states of fully open, semi-sealed and sealed, so that an instantaneous impact force can be formed in the fully open state of the telescopic tubes 15 to make the harmful gas rush out, and one After the gas is completely rushed out, the telescopic tube 15 gradually changes to a semi-sealed and sealed state, which can provide time for the gas with instantaneous impact force to mix with the harmful gas, and will not cause waste of instantaneous impact force gas, thereby improving the gas extraction efficiency to a certain extent, thereby facilitating the complete extraction of gas in the space, and then the extracted gas can be used to quickly detect and analyze the extracted gas using the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8. This gas extraction method improves the air extraction and air intake strength at corners, bends, etc., so that the air at the corners has a certain fluidity, thereby reducing the presence of turbid air in the confined space, and further enhancing the safety of confined space construction.

[0062] See also Figure 1 The ventilation mechanism 2 includes an axial flow fan 9, a detection sampling tube 10 and a support leg 11. Two sets of support legs 11 are fixedly installed at the bottom of the axial flow fan 9. The top of the support leg 11 is penetrated by a detection sampling tube 10. The detection sampling tube 10 is connected to the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8 through a three-way valve and a connecting pipe.

[0063] Among them, when it is necessary to use the telescopic tube 15 to perform extraction or blowing work, the setting of the axial flow fan 9 can provide extraction force or blowing force, and when it is necessary to extract harmful gases inside a confined space, the set detection sampling tube 10 can be connected to the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8 through the three-way valve and the connecting pipe, so that the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8 can be used to detect the extracted gas.

[0064] See also Figure 1 The mounting mechanism 3 includes a diverter plate 12, a first reinforcement rod 13 and a mounting plate 14. One end of the axial fan 9 is fixedly connected to the diverter plate 12. One side of the diverter plate 12 is fixedly connected to the mounting plate 14 through multiple groups of first reinforcement rods 13. Three groups of telescopic tubes 15 are fixedly installed on the mounting plate 14. One side of the telescopic tube 15 is fixedly connected to the diverter plate 12 through an elastic connecting tube 16.

[0065] Among them, the diverter plate 12 can divide the gas generated by the axial flow fan 9 into three groups, so that the three groups of telescopic tubes 15 can be used to extract or blow in the gas, and the connecting tube 15 is fixed by the mounting plate 14. The conversion mechanism 4 set subsequently can contact the elastic connecting tube 16, so that the elastic connecting tube 16 can be squeezed by the conversion mechanism 4, thereby changing the wind inlet and outlet flow and flow rate of the telescopic tube 15.

[0066] See also Figure 1 and Figure 3 The conversion mechanism 4 includes a pad 17, a positioning ring 19, a pressure plate 21, a drive motor 22 and a runner 23. One side of the diverter plate 12 is fixedly connected to the pad 17 on the outside of the elastic connecting tube 16. One side of the diverter plate 12 is fixedly connected to the positioning ring 19 through multiple groups of second reinforcing rods 18. A telescopic rod 20 is slidably connected to the positioning ring 19 corresponding to the position of the three groups of elastic connecting tubes 16. One end of the telescopic rod 20 is fixedly connected to an arc-shaped pressure plate 21. A drive motor 22 is installed on one side of the mounting plate 14. The output end of the drive motor 22 is fixedly connected to the runner 23. The outer surface of the runner 23 is fixedly connected to a first cam 24 that pushes the pressure plate 21 to seal the elastic connecting tube 16. The outer surface of the runner 23 is fixedly installed with a second cam 25 that pushes the pressure plate 21 to move and reduces the ventilation flow of the elastic connecting tube 16.

[0067] Among them, when it is necessary to change the flow rate and flow rate of the telescopic tube 15, the drive motor 22 is started to operate. The drive motor 22 can drive the runner 23, the first cam 24 and the second cam 25 to rotate. When the first cam 24 and the second cam 25 rotate, they can contact the telescopic rod 20. When the first cam 24 contacts the telescopic rod 20, it pushes the corresponding telescopic rod 20 and the pressure plate 21 to move upward, so that the pressure plate 21 and the pad 17 can be used to seal one group of elastic connecting tubes 16. At this time, the second cam 25 can push the pressure plate 21 upward and can present a semi-sealed state to another group of elastic connecting tubes 16, while the last group of elastic connecting tubes 16 is in a fully open state. In this way, the flow rate and flow rate output by the elastic connecting tubes 16 in the fully open state will increase, thereby forming an impact force in the confined space, which facilitates blowing out harmful gases in the corners of the space. Subsequently, as the drive motor 22 continues to rotate, the three groups of telescopic tubes 16 can be continuously in a fully open state, so that the axial flow fan 9 can be used to deliver a constant pressure to achieve gas impact.

[0068] See also Figure 1 、 Figure 4 、 Figure 5 and Figure 6 , also includes a power converter 6, a holding box 26 and a placement plate 27, the placement plate 27 is fixedly installed on the top of the holding box 26, a sealing cover 29 is hinged on one side of the holding box 26, and a buffer pad 30 is laid inside the sealing cover 29, and a power supply interface 31 electrically connected to an external DC power supply is provided on one side of the holding box 26. The controller 1 and the battery pack 5 are arranged inside the holding box 26, the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8 are arranged on one side of the holding box 26, and the power converter 6 is fixedly installed inside the holding box 26. The power converter 6 is used to convert the power supply mode of the controller 1, the ventilation mechanism 2 and the conversion mechanism 4 into DC power supply or battery pack 5 power supply.

[0069] Among them, the power supply converter 6 can realize the conversion between DC power and battery pack 5 power supply mode. When the distance from the DC power supply is far away, the battery pack 5 can be used for power supply, and the power supply interface 31 can be connected to an external DC power supply to charge the battery pack 5.

[0070] See also Figure 1 、 Figure 5 and Figure 6 A heat sink 32 is fixedly installed inside the storage box 26 and above the controller 1 and the battery pack 5. Two sets of exhaust fans 33 are fixedly installed on one side of the storage box 26 and corresponding to the position of the heat sink 32.

[0071] The heat sink 32 can quickly transfer the heat generated by the controller 1 and the battery pack 5 , and the exhaust fan 33 can quickly bring the generated heat out of the interior of the storage box 26 .

[0072] See also Figure 1 and Figure 4 , also includes a detection display 28, which is placed on the placement plate 27, and the detection display 28 is electrically connected to the controller 1. The detection display 28 is used to display the gas analysis results of the controller 1, and also includes an audible and visual alarm, which is electrically connected to the controller 1. When the controller 1 detects that the content of harmful substances in the gas sample exceeds the threshold, the audible and visual alarm is triggered to sound an alarm.

[0073] Among them, the detection display 28 set up can intuitively display the harmful gas data converted by the controller, which is convenient for the staff to observe in real time, and the sound and light alarm set up can trigger the sound and light alarm to sound an alarm when the controller 1 detects that the harmful substance content of the gas sample exceeds the threshold, which is convenient for the staff to monitor remotely, and there is no need for manual close-range detection of the harmful gas residue when the harmful gas is discharged.

[0074] Example 2: Please refer to Figure 1 and Figure 2 The method for using the multi-channel confined space safety intelligent construction device comprises the following steps:

[0075] Step 1: Set the working mode according to the construction space environment;

[0076] Step 2: Place the telescopic tube 15 into the corresponding confined space, then start the ventilation mechanism 2 to extract gas samples from the target construction space. During the gas sample extraction process, a portion of the gas extracted from the ventilation mechanism 2 is transported through the three-way valve and the connecting pipe to the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8, and the controller 1 is used to detect and analyze the harmful gas content and the gas temperature and humidity. When the controller 1 detects that the gas contains harmful gases, the sound and light alarm sounds an alarm, and the gas extraction process at the target position in the confined space is continued according to the corresponding working mode;

[0077] Step 3: The controller 1 drives the ventilation mechanism 2 to continuously execute the gas extraction process. When the controller 1 detects that the harmful gas content is lower than the set threshold through the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8, the sound and light alarm stops working and the gas extraction process is completed.

[0078] See also Figure 1 、 Figure 2 and Figure 3 , the working mode set in the step 1 includes a first working mode and a second working mode;

[0079] The first working mode includes the following steps:

[0080] Step A1: Place multiple sets of telescopic tubes 15 into different construction spaces, and control the ventilation mechanism 2 to extract gas from the construction space under negative pressure according to the detection threshold set by the sound and light alarm;

[0081] Step A2: Using the battery pack 5 to power the ventilation mechanism 2 to circulate air and exchange gas in the construction space;

[0082] First, the axial flow fan 9 is started to work. The axial flow fan 9 provides suction force, and the axial flow fan 9 and the telescopic tube 15 can be used to extract gas. During the gas extraction, the gas extracted by the axial flow fan 9 is transported to the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8 through the detection sampling tube 10, the three-way valve and the connecting tube, and the controller 1 is used to detect and analyze the harmful gas content and the gas temperature and humidity.

[0083] Secondly, the controller 1 analyzes the extracted gas and displays it on the detection display 28. When the sound and light alarm detects that the harmful substances in the gas exceed the threshold, the sound and light alarm sounds an alarm and the axial flow fan 9 continues to work;

[0084] Finally, when the controller 1 detects that the harmful gas content in the gas is lower than the threshold, the sound and light alarm is turned off. At this time, the axial flow fan 9 is turned off to complete the harmful gas extraction process in the limited space.

[0085] In addition to the first working mode, this embodiment also includes a second working mode. The difference from the first working mode set by default is that the second working mode includes the following sub-steps:

[0086] Step B1: The controller 1, the gas detection sensor interface 7, and the gas temperature and humidity detector interface 8 detect that the harmful substances in the extracted gas are always higher than a certain threshold, thereby turning on the second working mode and starting the conversion mechanism 4;

[0087] Step B2: First, the battery pack 5 is used to power the ventilation mechanism 2 and the conversion mechanism 4. The ventilation mechanism 2 continuously circulates and exchanges air within the construction space. When extracting gas from the construction space, the conversion mechanism 4 stops operating, and the three sets of telescopic tubes 15 are fully open, extracting harmful gases from the construction space within a set time.

[0088] Secondly, when the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8 detect that the harmful gas is slightly higher than the set threshold within a certain period of time, the axial flow motor 9 rotates in the opposite direction and starts the conversion mechanism 4 to operate. The conversion mechanism 4 can squeeze the three groups of telescopic tubes 15, and the three groups of telescopic tubes 15 are switched between fully open, semi-open and sealed states respectively. When one group of telescopic tubes 15 is in the fully open state, one of the other two groups of telescopic tubes 15 is in the semi-open state, and the other group is in the sealed state. In this way, the gas flow of the fully open telescopic tubes 15 can be increased, forming a large-impact extraction or blowing action, thereby forming an instantaneous impact force to rush out the harmful gas, and after a stream of gas is completely rushed out, the telescopic tubes gradually switch to the semi-sealed and sealed states, so that the gas with instantaneous impact force has time to mix with the harmful gas, and will not cause waste of instantaneous impact force gas, thereby improving the gas extraction efficiency to a certain extent;

[0089] Again, after the telescopic tube 15 continuously blows gas, the gas at the corner in the confined space is blown out, and then the conversion mechanism 4 stops working, and the axial flow fan 9 changes the rotation mode again, and uses the axial flow fan 9 to extract the gas in the confined space, and repeats the working mode in the above working mode. When the harmful substance content detected by the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8 is lower than the set threshold, the sound and light alarm stops working, and the gas content detection and gas discharge in the confined space can be completed.

[0090] Finally, a custom operating mode is also included. Based on the initial harmful gas levels detected by the gas detection sensor interface 7 and the gas temperature and humidity detector interface 8, the operator can customize the forward and reverse rotation duration and forward and reverse switching time of the axial flow fan 9, the duration of the telescopic tube 15's fully open, semi-sealed, and sealed states, and define its cycle method. This mode can be enabled after obtaining the highest control authority.

[0091] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-channel confined space safe intelligent construction device, characterized by: include: An installation mechanism (3), the installation mechanism (3) being used to fix and install three sets of telescopic tubes (15), the telescopic tubes (15) extending into the interior of construction spaces at different positions; A ventilation mechanism (2), the ventilation mechanism (2) being connected to the telescopic tube (15) via the mounting mechanism (3), the ventilation mechanism (2) driving the telescopic tube (15) to discharge gas from different construction spaces and to exchange gas between different construction spaces, so that gas at corners of the construction spaces is blown out by the exchanged gas; A conversion mechanism (4), the conversion mechanism (4) being arranged on the mounting mechanism (3), and the conversion mechanism (4) being used to change the gas output flow rate of the telescopic tube (15), so that the gas flow rate and flow rate of the plurality of groups of telescopic tubes (15) are increased in sequence, thereby forming an instantaneous impact force on the corners of the construction space at different positions; a gas detection sensor interface (7), the gas detection sensor interface (7) being fixedly connected to the ventilation mechanism (2) via a three-way valve, the gas detection sensor interface (7) being used to collect exhaust gas from the ventilation mechanism (2), and to detect and analyze the exhaust gas sample using the controller (1); A gas temperature and humidity detector interface (8), the gas temperature and humidity detector interface (8) being fixedly connected to the ventilation mechanism (2) via a three-way valve, the gas temperature and humidity detector interface (8) being used to collect exhaust gas from the ventilation mechanism (2), and to analyze the exhaust gas sample temperature and humidity using the controller (1); A controller (1), the controller (1) being electrically connected to the gas detection sensor interface (7) and the gas temperature and humidity detector interface (8), analyzing exhaust gas samples collected by the gas detection sensor interface (7) and the gas temperature and humidity detector interface (8), and performing data conversion on the analyzed gas samples; A battery pack (5), the battery pack (5) supplies power to the controller (1), the ventilation mechanism (2) and the conversion mechanism (4); The ventilation mechanism (2) comprises an axial flow fan (9), a detection sampling tube (10) and a support leg (11); two sets of support legs (11) are fixedly installed at the bottom of the axial flow fan (9); a detection sampling tube (10) is provided through the top of the support leg (11); the detection sampling tube (10) is connected to the gas detection sensor interface (7) and the gas temperature and humidity detector interface (8) through a three-way valve and a connecting pipe; The mounting mechanism (3) comprises a diverter plate (12), a first reinforcing rod (13) and a mounting plate (14); one end of the axial flow fan (9) is fixedly connected to the diverter plate (12); one side of the diverter plate (12) is fixedly connected to the mounting plate (14) via a plurality of groups of first reinforcing rods (13); three groups of telescopic tubes (15) are fixedly mounted on the mounting plate (14); one side of the telescopic tubes (15) is fixedly connected to the diverter plate (12) via an elastic connecting tube (16); The conversion mechanism (4) comprises a pad (17), a positioning ring (19), a pressure plate (21), a drive motor (22) and a rotating wheel (23); a pad (17) is fixedly connected to one side of the diverter plate (12) and located outside the elastic connecting tube (16); a positioning ring (19) is fixedly connected to one side of the diverter plate (12) via a plurality of groups of second reinforcing rods (18); a telescopic rod (20) is slidably connected to the positioning ring (19) at positions corresponding to the three groups of elastic connecting tubes (16); the telescopic rod ( One end of the mounting plate (14) is fixedly connected to an arc-shaped pressing plate (21), one side of the mounting plate (14) is installed with a driving motor (22), the output end of the driving motor (22) is fixedly connected to a rotating wheel (23), the outer surface of the rotating wheel (23) is fixedly connected to a first cam (24) for pushing the pressing plate (21) to seal the elastic connecting tube (16), and the outer surface of the rotating wheel (23) is fixedly installed with a second cam (25) for pushing the pressing plate (21) to move and reducing the ventilation flow of the elastic connecting tube (16).

2. A multi-channel confined space safe intelligent construction device according to claim 1, characterized in that: The invention also includes a power supply converter (6), a storage box (26) and a placement plate (27), wherein the placement plate (27) is fixedly installed on the top of the storage box (26), a sealing cover (29) is hinged on one side of the storage box (26), and a buffer pad (30) is laid inside the sealing cover (29), and a power supply interface (31) electrically connected to an external DC power supply is provided on one side of the storage box (26), the controller (1) and the battery pack (5) are arranged inside the storage box (26), the gas detection sensor interface (7) and the gas temperature and humidity detector interface (8) are arranged on one side of the storage box (26), and the power supply converter (6) is fixedly installed inside the storage box (26), and the power supply converter (6) is used to convert the power supply mode of the controller (1), the ventilation mechanism (2) and the conversion mechanism (4) into DC power supply or battery pack (5) power supply.

3. The multi-channel confined space safe intelligent construction device according to claim 2, characterized in that: A heat sink (32) is fixedly installed inside the storage box (26) and above the controller (1) and the battery pack (5). Two sets of exhaust fans (33) are fixedly installed on one side of the storage box (26) and at positions corresponding to the heat sink (32).

4. The multi-channel confined space safe intelligent construction device according to claim 3, characterized in that: It also includes a detection display (28), which is placed on the placement plate (27), the detection display (28) is electrically connected to the controller (1), and the detection display (28) is used to display the gas analysis result of the controller (1).

5. The multi-channel confined space safe intelligent construction device according to claim 4, characterized in that: It also includes an audible and visual alarm, which is electrically connected to the controller (1). When the controller (1) detects that the content of harmful substances in the gas sample exceeds a threshold value, the audible and visual alarm is triggered to sound an alarm.

6. A method for using a multi-channel confined space safe intelligent construction device, applicable to the confined space safe intelligent construction device according to any one of claims 1 to 5, characterized in that: The method for using the multi-channel confined space safety intelligent construction device comprises the following steps: Step 1: Set the working mode according to the construction space environment; Step 2: extracting gas samples from the target construction space using the ventilation mechanism (2) and the telescopic tube (15); when the controller (1) detects harmful gas during the gas sample extraction process, the sound and light alarm sounds an alarm, and the gas extraction process at the target location is carried out according to the corresponding working mode; Step 3: The controller (1) drives the ventilation mechanism (2) to execute the gas extraction process. When the controller (1) detects that the harmful gas content is lower than the set threshold, the sound and light alarm stops working and the gas extraction process is completed.

7. The method for using the multi-channel confined space safe intelligent construction device according to claim 6, characterized in that: The working mode set in the step 1 includes a first working mode and a second working mode; The first working mode includes the following steps: Step A1: placing multiple sets of telescopic tubes (15) into different construction spaces, and controlling the ventilation mechanism (2) to extract gas from the construction space under negative pressure according to the detection threshold set by the sound and light alarm; Step A2: using the battery pack (5) to power the ventilation mechanism (2) to circulate air and exchange gases in the construction space; The second working mode includes the following steps: Step B1: controlling the conversion mechanism (4) to operate according to the working mode set by the controller (1); Step B2: The battery pack (5) is used to power the ventilation mechanism (2) and the conversion mechanism (4), and the ventilation mechanism (2) is used to continuously circulate and exchange air in the construction space. When extracting gas in the construction space, the conversion mechanism (4) stops operating, and the three groups of telescopic tubes (15) are in a fully open state. The harmful gas in the construction space is extracted within a set time. After the extraction stops within the set time, the conversion mechanism (4) is started to operate. The conversion mechanism (4) drives the three groups of telescopic tubes (15) to switch between fully open, semi-open and sealed states. When one group of telescopic tubes (15) is in a fully open state, one of the other two groups of telescopic tubes (15) is in a semi-open state, and the other is in a sealed state. In this way, the gas flow rate of the fully open telescopic tube (15) is increased, forming a large-impact extraction or blowing action, and the working method in the above working mode is repeated.

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