Intelligent monitoring safety device for welding operation in limited space

Abstract

The utility model provides a limited space welding operation intelligent monitoring safety device which comprises a gas detector installed in an installation box, a gas inlet of the gas detector is connected with a gas guide pipe, and one end of the gas guide pipe extends out of the installation box. The gas detector is electrically connected with a controller, the controller is electrically connected with a warning indicator and a control switch, and the control switch is connected into a power supply circuit of the welding machine through a wire. When the gas detector detects that the concentration of poisonous gas in the space where welding operation is located exceeds the safe concentration, the gas detector sends an electric signal to the controller, the controller regulates and controls the control switch to be switched off, and the warning indicator is started for warning. According to the device, the gas detector, the controller and the warning indicator are integrated in the mounting box, the mounting box can be carried to a limited space, poisonous gas is detected in real time, the detection efficiency is improved, the continuity of welding operation is guaranteed, and the welding progress is accelerated.

Description

Technical Field

[0001] This utility model belongs to the technical field of construction protection equipment, specifically to an intelligent monitoring and safety device for welding operations in confined spaces. Background Technology

[0002] During construction, welding inside large-span box-type steel structures presents a significant challenge. Due to the limited space and high airtightness of these structures, large amounts of toxic gases generated during welding are difficult to expel and accumulate in the work area. As welding progresses, the concentration of these toxic gases gradually increases, eventually posing a threat to workers. Therefore, when welding inside box-type steel structures, workers typically carry handheld gas detectors. During welding, they periodically monitor the concentration of toxic gases in the air. If the concentration exceeds safe levels, the worker is evacuated, and ventilation equipment installed at the exhaust vents removes the toxic gases from the work area until the concentration drops to a safe level or is completely eliminated before re-entering to continue welding. While handheld detectors are simple to operate and effectively reduce safety risks in confined spaces, this method is highly effective. However, this requires operators to perform monitoring and repetitive operations periodically, which is time-consuming, labor-intensive, and requires a large workforce, increasing construction costs. Furthermore, the timeliness and accuracy are questionable. This affects the progress of welding operations, and when operators are performing complex welding work, they are prone to neglecting to monitor the concentration of toxic gases, potentially leading to serious safety accidents. Utility Model Content

[0003] To address the problems of time-consuming and slow welding progress issues associated with using handheld detectors to monitor toxic gas concentrations during welding operations in confined spaces, which can easily lead to oversights and serious safety accidents, this invention provides an intelligent monitoring and safety device for welding operations in confined spaces.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model proposes an intelligent monitoring and safety device for welding operations in confined spaces, including a gas detector installed in a mounting box, with a gas guide pipe connected to the gas inlet of the gas detector, and one end of the gas guide pipe extending out of the mounting box.

[0006] The gas detector is electrically connected to a controller, the controller is electrically connected to an alarm and a control switch, and the control switch is connected to the power supply circuit of the welding machine via a wire;

[0007] When the gas detector detects that the concentration of toxic gas in the welding operation space exceeds the safe concentration, it sends an electrical signal to the controller. The controller then controls the control switch to open and activates the warning device.

[0008] Preferably, a filter is provided on the exhaust port of the gas detector.

[0009] Preferably, a partition is provided inside the mounting box on the vertical side of the gas detector, the partition dividing the mounting box into a first mounting cavity and a second mounting cavity. A protective component is installed in the first mounting cavity, and the gas detector, the alarm, and the control switch are installed in the second mounting cavity.

[0010] Preferably, the protective component includes an oxygen cylinder installed in the first mounting cavity, and a mask for oxygen inhalation is connected to the oxygen cylinder.

[0011] Preferably, the mounting box has an opening slot at the top of the first mounting cavity, a cover plate is installed in the opening slot, and a magnetic attraction element is provided between the bottom end face of the cover plate and the top end face of the opening slot.

[0012] Preferably, an air aspirator is installed inside the air duct.

[0013] Preferably, a filter screen is provided at the port of the air duct.

[0014] Preferably, the bottom of the mounting box is provided with a suction cup.

[0015] Preferably, the controller is electrically connected to a signal transmitter, which is communicatively connected to a fan installed in the exhaust duct of the welding operation space and a monitoring terminal located outside the welding operation space.

[0016] Preferably, the alarm is an audible and visual alarm.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] This invention proposes an intelligent monitoring and safety device for welding operations in confined spaces. The device introduces gas from the confined space into a gas detector via a gas duct, enabling real-time monitoring of toxic gas concentrations. When the gas detector detects a concentration exceeding the safe level, it immediately sends an electrical signal to the controller. The controller responds quickly, disconnecting the control switch and cutting off the power supply to the welding machine, thus stopping the welding operation immediately. Simultaneously, an alarm is triggered to alert the workers, promptly reminding them of the excessive toxic gas concentration and prompting them to take appropriate measures such as ventilation and evacuation. This effectively prevents accidents such as poisoning and suffocation caused by excessive toxic gas concentrations, avoiding the need for workers to continue working in environments with excessive toxic gas levels. It fundamentally protects the safety of workers, eliminating the need for frequent interruptions for manual monitoring, greatly improving detection efficiency, ensuring the continuity of welding operations, and accelerating the welding progress. Furthermore, the device operates continuously and stably, preventing oversights due to worker negligence, providing reliable safety assurance for welding operations in confined spaces, and saving labor and time costs. To ensure uninterrupted safety supervision, reduce accident risks, and improve the safety index of the construction environment.

[0019] Furthermore, by installing a filter at the exhaust port of the gas detector, the air environment in the confined space can be maintained in a relatively safe state for a longer period of time, which provides more working time for the operators, effectively extends the overall duration of the welding operation, and reduces the need for frequent interruptions of welding operations for ventilation due to the rapid rise in the concentration of toxic gases.

[0020] Furthermore, this device includes protective components inside the installation box. The oxygen cylinder and mask within these components provide emergency rescue protection for the workers. Thus, in confined space welding operations, if the concentration of toxic gases exceeds the standard or other unexpected situations cause the working environment to deteriorate, the workers can quickly put on the mask to inhale oxygen, maintain normal breathing, and avoid serious safety accidents such as suffocation caused by lack of oxygen.

[0021] Furthermore, the suction pipe of this device is equipped with a filter screen, which can block spatter and slag generated during welding from entering and protect the gas detector. The suction pipe is also equipped with a suction device, which can stably and continuously draw air from the confined space into the gas detector for detection, thereby improving the stability of the device's operation and the continuity and accuracy of detection. Attached Figure Description

[0022] Figure 1 This is a front view cross-sectional structural diagram of an intelligent monitoring and safety device for welding operations in confined spaces proposed in this utility model;

[0023] Figure 2 This is a front view structural diagram of an intelligent monitoring and safety device for welding operations in confined spaces proposed in this utility model;

[0024] Figure 3 This is a side view sectional structural diagram of an intelligent monitoring and safety device for welding operations in a confined space proposed in this utility model;

[0025] In the attached diagram: 1. Mounting box; 100. First mounting cavity; 101. Second mounting cavity; 102. Handle; 103. Clamping component; 2. Cover plate; 3. Magnetic suction component; 4. Alarm device; 5. Controller; 6. Signal transmitter; 7. Power strip; 8. First wire; 9. Control switch; 10. Second wire; 11. Gas detector; 12. Gas duct; 13. Aspirator; 14. Suction cup; 15. Filter; 16. Protective component; 160. Oxygen cylinder; 161. Face mask; 17. Display; 18. Regulator; 19. Battery pack; 20. Shock-absorbing pad; 21. Filter screen. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] See Figures 1-3 This utility model proposes an intelligent monitoring and safety device for welding operations in confined spaces, including a gas detector 11 installed in a mounting box 1. A gas inlet 12 is connected to the gas detector 11, with one end of the gas inlet 12 extending outside the mounting box 1. A controller 5 is electrically connected to the gas detector 11. The controller 5 is connected to a battery block 19 via a wire and an alarm 4. The controller 5 is also electrically connected to a control switch 9 via a second wire 10. The alarm 4 is an audible and visual alarm. The control switch 9 is electrically connected to a power strip 7, which is connected to the power supply circuit of the welding machine via a wire. Specifically, the power strip 7 is connected to the circuit where one electrode being welded is connected to an external power source. When the control switch 9 activates, the device will activate the alarm. When switch 9 is turned off, the connection between the welding machine and the external power supply is cut off, causing the welding machine to stop working. When the gas detector 11 detects that the concentration of toxic gas in the welding operation space exceeds the safe concentration, it sends an electrical signal to the controller 5. The controller 5 controls switch 9 to turn off and activates the alarm 4 to issue an audible and visual warning to the operators. This device integrates a gas detector 11 in the installation box 1 to realize real-time monitoring of the concentration of toxic gas in a confined space. Based on the monitoring results, it automatically controls the power supply circuit of the welding machine and issues an alarm to the operators in the welding operation space, notifying them to evacuate in time, ensuring the safety of the operators during welding operations in a confined space and reducing the risk of major safety accidents.

[0033] like Figure 1 As shown, a filter 15 is provided on the exhaust port of the gas detector 11. The filter 15 filters the toxic gas from the gas detector 11, slows down the growth of toxic gas content in the confined space where the welding operation is located, prolongs the welding operation time, and improves the continuity and efficiency of the welding operation.

[0034] like Figure 1 As shown, a partition is provided on the vertical side of the gas detector 11 inside the mounting box 1. The partition divides the mounting box 1 into a first mounting cavity 100 and a second mounting cavity 101. A clamping member 103 is provided in the first mounting cavity 100. The clamping member 103 is a clamping ring, and a protective member 16 is installed inside the clamping ring. The gas detector 11, the alarm 4, and the control switch 9 are installed in the second mounting cavity 101. The partition divides the mounting box 1 into two chambers for the layout of components, realizing the reasonable partitioning of different functional components, avoiding the device for detecting toxic gases from affecting the use of the protective member 16, and improving the overall stability and reliability of the device.

[0035] like Figure 1 As shown, the protective component 16 includes an oxygen cylinder 160 installed in the first mounting cavity 100. A mask 161 for oxygen inhalation is connected to the oxygen cylinder 160. A shock-absorbing pad 20 is provided at the bottom of the first mounting cavity 100, and the oxygen cylinder 160 is placed on top of the shock-absorbing pad 20. A rubber pad is provided between the outer wall of the oxygen cylinder 160 and the inner wall of the clamping ring. The shock-absorbing pad 20 and the rubber pad reduce the vibration of the oxygen cylinder 160 from the outside, ensuring the safety of the oxygen cylinder 160. When a concentration exceeding the safe level is detected in the confined space, the staff can evacuate by wearing the mask 161, providing emergency rescue protection for the workers and avoiding serious safety accidents such as suffocation caused by lack of oxygen.

[0036] like Figure 1 As shown, an opening slot is provided on the top of the first mounting cavity 100 on the mounting box 1. A cover plate 2 is installed in the opening slot. A magnetic suction element 3 is provided between the bottom end face of the cover plate 2 and the top end face of the opening slot. The magnetic suction element 3 can quickly fix the cover plate 2 in the opening slot on the top of the first mounting cavity 100 on the mounting box 1, so as to prevent the spatter and welding slag generated during the welding process from entering the first mounting cavity 100 and causing damage to the face shield 161, thus affecting the use of the protective component 16. A handle 102 is provided on the top of the mounting box 1, which can facilitate the movement of the device.

[0037] like Figure 1 and Figure 3As shown, an air aspirator 13 is installed inside the air duct 12. The air aspirator 13 can stably and continuously draw air from the confined space into the gas detector 11 for detection, thereby improving the stability of the device's operation and the continuity and accuracy of the detection.

[0038] like Figure 1 and Figure 3 As shown, a filter screen 21 is provided at the port of the air duct 12. The filter screen 21 blocks dust or spatter and slag generated during the welding process from entering the air duct 12, thus protecting the safety of the air aspirator 13 and the gas detector 11.

[0039] Preferably, in order to increase the stability of the mounting box 1 in a limited space, a suction cup 14 is provided at the bottom of the mounting box 1. The suction cup 14 is used to adhere to the ground in the limited space to prevent the mounting box 1 from moving due to some slight vibrations during operation.

[0040] Preferably, the controller 5 is electrically connected to a signal transmitter 6 via a first wire 8. The signal transmitter 6 is communicatively connected to a fan installed in the exhaust duct of the welding operation space and a monitoring terminal located outside the welding operation space. The signal transmitter 6 can control the fan in the exhaust duct of the welding operation space to work, thereby slowing down the increase rate of toxic gas in the confined space, providing sufficient evacuation time for the workers, or reducing the concentration of toxic gas in the confined space and extending the welding operation time. At the same time, the monitoring terminal also reports the toxic gas data in the confined space to the external management personnel, enabling the management personnel to take corresponding measures based on the toxic gas data.

[0041] Preferably, a display 17 is provided on the outer wall of the installation box 1, and an regulator 18 is provided on the display 17. The regulator 18 can facilitate the operator to set the warning threshold for toxic gas concentration. The display 17 is electrically connected to the controller 5. Through the display 17, the operator can clearly understand the current concentration of toxic gas in the confined space and then take corresponding measures.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications made to the technical solutions based on the technical concept proposed by this utility model shall fall within the scope of protection of the claims of this utility model.

Claims

1. An intelligent monitoring safety device for welding operations in confined spaces, characterized in that, Includes a gas detector (11) installed in the mounting box (1), with a gas guide pipe (12) connected to the gas inlet of the gas detector (11), one end of the gas guide pipe (12) extending out of the mounting box (1); The gas detector (11) is electrically connected to a controller (5), the controller (5) is electrically connected to an alarm (4) and a control switch (9), and the control switch (9) is connected to the power supply circuit of the welding machine through a wire; When the gas detector (11) detects that the concentration of toxic gas in the space where the welding operation is located exceeds the safe concentration, it sends an electrical signal to the controller (5). The controller (5) controls the control switch (9) to open and activates the alarm (4) to issue a warning.

2. The intelligent monitoring safety device for welding operation in limited space according to claim 1, characterized in that, A filter (15) is provided on the exhaust port of the gas detector (11).

3. The intelligent monitoring safety device for welding operation in limited space according to claim 1, characterized in that, A partition is provided inside the mounting box (1) on the vertical side of the gas detector (11). The partition divides the mounting box (1) into a first mounting cavity (100) and a second mounting cavity (101). A protective component (16) is installed in the first mounting cavity (100), and the gas detector (11), the alarm (4), and the control switch (9) are installed in the second mounting cavity (101).

4. The intelligent monitoring safety device for welding operation in limited space according to claim 3, characterized in that, The protective component (16) includes an oxygen cylinder (160) installed in the first mounting cavity (100), and a mask (161) for oxygen inhalation is connected to the oxygen cylinder (160).

5. The intelligent monitoring safety device for welding operation in a confined space according to claim 4, wherein An opening slot is provided on the top of the first mounting cavity (100) of the mounting box (1), and a cover plate (2) is installed in the opening slot. A magnetic suction element (3) is provided between the bottom end face of the cover plate (2) and the top end face of the opening slot.

6. The intelligent monitoring safety device for welding operation in a confined space according to claim 5, wherein An air aspirator (13) is installed inside the air duct (12).

7. The intelligent monitoring safety device for welding operation in a confined space according to claim 1, wherein A filter screen (21) is provided on the port of the air duct (12).

8. The intelligent monitoring safety device for welding operation in a confined space according to claim 1, wherein The bottom of the mounting box (1) is provided with a suction cup (14).

9. The intelligent monitoring safety device for welding operation in a confined space according to claim 1, wherein The controller (5) is electrically connected to a signal transmitter (6), which is communicatively connected to a fan installed in the exhaust pipe of the welding operation space and a monitoring terminal set outside the welding operation space.

10. The intelligent monitoring safety device for welding operation in a confined space according to claim 1, wherein The warning device (4) is an audible and visual alarm.

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