A remote testing device for a gas concentration alarm in a sunken closed space

Abstract

The utility model relates to the technical field of gas detection, specifically is a kind of sunken closed space gas concentration alarm remote testing device, including telescopic rod body, the hollow structure of gas transmission channel is formed in telescopic rod body inside, handheld end is equipped with air inlet in telescopic rod body surface, the utility model satisfies to reach the requirement of elongation to predetermined depth by the telescopic rod body of first pipe, expansion pipe and tail pipe mutually spliced, then through angle adjusting function to ensure that utensil can be aligned with alarm probe, according to the demand selection standard gas and volatile liquid two kinds of test mode, can be flexibly selected according to actual demand, application scene is more extensive, test personnel completely need not enter the closed space possibly existing toxic harmful flammable and explosive gas or oxygen-deficient environment, fundamentally eliminates the serious safety risk that personnel can face in traditional test method, guarantees the life safety of operator.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, specifically a remote testing device for a sunken, enclosed space gas concentration alarm. Background Technology

[0002] Gas concentration alarms are key safety devices used to detect the concentration of specific gases in the environment and issue an alarm when the concentration exceeds the standard. They are widely used in industries such as petrochemicals, natural gas, coal mining, and energy storage and transportation. For example, in high-risk environments such as aviation fuel depots, gas concentration alarms can monitor oil and gas leaks in real time, thereby effectively preventing major safety accidents such as fires, explosions, or poisoning caused by gas leaks.

[0003] To ensure the reliability and effectiveness of gas concentration alarms, relevant safety regulations clearly require them to undergo regular verification and performance testing. Typically, the verification cycle for such equipment does not exceed one year, and alarm performance testing is required quarterly. However, when operating gas concentration alarms installed in sunken, enclosed spaces, such as oil depot tanks and underground pipeline wells, existing testing methods usually rely on personnel entering the enclosed space for manual operation. This process has the following significant drawbacks and safety hazards: sunken, enclosed spaces are typically complex in structure and confined in space, making it extremely inconvenient for personnel to carry equipment in and out, and difficult to operate. Furthermore, these spaces may contain toxic and harmful gases such as hydrogen sulfide and carbon monoxide, or flammable and explosive gases such as natural gas and gasoline vapor, or there may be insufficient oxygen. Personnel entering such environments will directly face the life-threatening risks of poisoning, suffocation, or even explosion. This results in long testing times and low work efficiency.

[0004] Therefore, how to provide a solution that can safely and quickly complete the performance test of a gas concentration alarm without requiring personnel to enter a confined space is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a remote testing device for a sunken, enclosed space gas concentration alarm, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a remote testing device for a sunken, enclosed space gas concentration alarm, comprising a telescopic rod, the telescopic rod having a hollow structure forming a gas delivery channel inside, an air inlet at one end of the telescopic rod and an air outlet at the other end; a clamping mechanism is rotatably provided at the end of the telescopic rod away from the air inlet; and a container is also included, the container being detachably installed on the clamping mechanism, and the container being connected to the air outlet via a flexible hose.

[0007] Preferably, the container includes: a container body for covering the alarm probe; an air pipe communicating with the container body and for connecting the air outlet of the telescopic rod; and at least two positioning parts disposed on the outer wall of the container body for cooperating with the clamping mechanism.

[0008] Preferably, the telescopic rod includes: a head tube, at least one expansion tube section, and a tail tube, with each tube section being detachably connected to the others via sealing threads.

[0009] Preferably, the air outlet is a first quick-connect plug located at the end of the tailpipe, and the air inlet is a second quick-connect plug located at the end of the headpipe.

[0010] Preferably, an adjustment mechanism for adjusting the angle of the clamping mechanism is provided between the clamping mechanism and the telescopic rod.

[0011] Preferably, the angle adjustment mechanism includes a connecting seat and a torsion seat, and a positioning and locking bolt is provided between the connecting seat and the torsion seat.

[0012] Preferably, the clamping mechanism includes a connecting plate, on which a connecting housing connected to the torsion seat is provided; the connecting plate is provided with at least two relatively movable gripper mechanisms; the connecting plate is also provided with a transmission component for adjusting the synchronous opening or clamping of the at least two gripper mechanisms; and the connecting plate is provided with an explosion-proof motor for driving the transmission component.

[0013] Preferably, the transmission assembly includes a screw that rotates on the connecting plate, an adjusting seat that is threaded onto the screw, and the adjusting seat that is connected to the gripper mechanism through the connecting plate via a connector; the output shaft of the explosion-proof motor is connected to one end of the screw.

[0014] Preferably, the gripper mechanism includes grippers, a rotating plate rotatably connected to the bottom of the connecting plate surface, a connecting rod rotatably connected to the bottom of the adjusting seat, and the other end of the connecting rod rotatably connected to the rotating plate.

[0015] Preferably, the head tube, the expansion tube, and the tail tube are all made of aerospace-grade aluminum alloy.

[0016] Compared with existing technologies, the advantages of this invention are as follows: This invention uses a telescopic rod consisting of a front tube, an expansion tube, and a tail tube that are spliced ​​together to meet the requirement of extending to a predetermined depth. Then, the angle adjustment function ensures that the container can be aligned with the alarm probe. Two testing modes, standard gas and volatile liquid, can be selected according to actual needs, making the application scenarios more extensive. Testers do not need to enter a confined space that may contain toxic, harmful, flammable, or explosive gases or an oxygen-deficient environment, fundamentally eliminating the serious safety risks that personnel may face in traditional testing methods and ensuring the safety of operators. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a remote testing device for a submerged enclosed space gas concentration alarm. Figure 2 This is an exploded schematic diagram of the head tube, expansion tube, and tail tube structure of a remote testing device for a submerged enclosed space gas concentration alarm. Figure 3 A schematic diagram of the three-dimensional structure of a container for a remote testing device of a submerged enclosed space gas concentration alarm. Figure 4 This is a three-dimensional structural diagram of the clamping mechanism of a remote testing device for a sunken, enclosed space gas concentration alarm.

[0018] In the diagram: 1. Head tube; 2. Expander tube; 3. Tail tube; 4. Connecting seat; 5. Torsion seat; 6. Clamp; 7. First quick-connect plug; 8. Second quick-connect plug; 9. Vessel; 10. Air tube; 11. Positioning part; 12. Connecting plate; 13. Screw; 14. Explosion-proof motor; 15. Adjusting seat; 16. Rotating plate; 17. Connecting rod; 18. Connecting housing. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 4 This utility model provides a remote testing device for a sunken, enclosed space gas concentration alarm. The device includes a telescopic rod, which is the basis for remote operation and is composed of multiple detachably connected tubular sections. Figure 2 As shown, it includes a head pipe 1, at least one expansion pipe 2, and a tail pipe 3. The pipe sections are tightened and fixed together by internal and external threads. This connection method can not only flexibly adjust the total length according to the depth of the confined space, but also ensure the sealing of the connection.

[0021] The telescopic rod has a hollow structure inside that forms a sealed air supply channel. One end of the telescopic rod has an air inlet, and the other end has an air outlet. The air inlet is located at the end held by the operator, i.e., the end of the first tube 1, specifically a second quick-connect plug 8, for connecting to an external test gas source, such as a standard gas cylinder. The air outlet is located at the end near the clamping mechanism, i.e., the end of the tail tube 3, specifically a first quick-connect plug 7. In order to achieve the requirements of high strength and lightweight and meet the requirements of use in explosion-proof areas, each section of the telescopic rod is made of aerospace-grade aluminum alloy.

[0022] The other end of the telescopic rod is rotatably equipped with a clamping mechanism for clamping the container 9. The clamping mechanism allows for multi-dimensional angle adjustments, such as horizontal and vertical, to facilitate precise alignment of the alarm probes at different positions.

[0023] like Figure 3 As shown, it also includes a container 9, which has an opening at the top for covering the alarm probe. The container 9 is detachably mounted on the clamping mechanism and is connected to the air outlet via a hose.

[0024] In this embodiment, the telescopic rod includes: a head tube 1, at least one expansion tube 2, and a tail tube 3, with each tube section being detachably connected to the others via sealing threads.

[0025] In this embodiment, the air outlet is the first quick-connect plug 7 located at the end of the tailpipe 3, and the air inlet is the second quick-connect plug 8 located at the end of the headpipe 1.

[0026] In this embodiment, an adjustment mechanism for adjusting the pitch or deflection angle of the clamping mechanism is provided between the clamping mechanism and the telescopic rod. This adjustment mechanism can be a universal coupling, a flexible hose made of metal or composite material that can be manually bent and maintain its shape, or an adjustment mechanism consisting of a rotatable turntable. In practical applications, the installation angle of gas concentration alarm probes in sunken, enclosed spaces is not always a standard vertical or horizontal direction; there may be various situations such as tilted side mounting. This adjustment mechanism allows operators to flexibly adjust the pitch and deflection angles of the clamping mechanism during remote operation, thereby ensuring that the front-end container 9 can accurately align with and effectively cover the alarm probe installed at any angle, solving the problem of being unable to conduct tests due to difficult installation locations.

[0027] In this embodiment, the angle adjustment mechanism includes a connecting seat 4 and a torsion seat 5. A bolt for positioning and locking the torsion seat 5 is provided between the connecting seat 4 and the torsion seat 5. The connecting seat 4 and the torsion seat 5 are provided with connecting holes for the bolt to pass through. The bolt passes through the connecting holes and passes through the connecting seat 4 and the torsion seat 5. Both ends of the bolt surface are threaded with nuts. When the angle needs to be adjusted, the nuts can be rotated to release the pressure on the torsion seat 5 and reduce the pressure. When the position of the torsion seat 5 needs to be fixed, the nuts can be tightened to make it contact the torsion seat 5 for limiting.

[0028] In another embodiment, one or more bolts for positioning and locking are provided between the connecting seat 4 and the torsion seat 5. The bolts pass through the through holes or arc grooves on the connecting seat 4 and are screwed into the threaded holes of the torsion seat 5. When the angle needs to be adjusted, the operator rotates the bolt counterclockwise to reduce the contact pressure between its end and the torsion seat 5. At this time, the torsion seat 5 can rotate freely relative to the connecting seat 4. The operator can easily manually adjust the pitch or deflection angle of the clamping mechanism. After the angle is determined, the bolt is tightened clockwise. The tightening of the bolt will generate clamping force, which will generate friction between the contact surfaces of the connecting seat 4 and the torsion seat 5, thereby firmly fixing the torsion seat 5 at the current angle and making it impossible to rotate easily.

[0029] In this embodiment, the clamping mechanism includes a connecting plate 12 serving as the base of the entire clamping mechanism. A connecting housing 18 connected to the torsion seat 5 is provided on the connecting plate 12, thereby achieving a hinged connection between the clamping mechanism and the telescopic rod. At least two relatively movable gripper mechanisms are provided on the connecting plate 12. A transmission assembly for adjusting the synchronous opening or clamping of the at least two gripper mechanisms is also provided on the connecting plate 12. Please refer to the accompanying drawings. Figure 4 It is equipped with three gripper mechanisms for gripping and fixing the container 9; the connecting plate 12 is equipped with an explosion-proof motor 14 for driving the transmission components. The explosion-proof motor model is selected because it can effectively avoid generating electric sparks during operation, which is crucial for working in environments such as oil depots filled with flammable and explosive gases, and fundamentally eliminates the risk of explosion caused by the equipment itself.

[0030] In this embodiment, the transmission assembly includes a screw 13 rotatably mounted on a connecting plate 12, and an adjusting seat 15 connected to a gripper mechanism on the surface of the screw 13. The adjusting seat 15 has a lead screw sleeve connected to the surface of the screw 13 and a connecting member at the bottom of the lead screw sleeve corresponding to a number of grippers. The bottom end of the connecting member on the adjusting seat 15 penetrates the connecting plate 12. Because the bottom end of the connecting member on the adjusting seat 15 penetrates the connecting plate 12, it can achieve a similar effect to a slide rail, preventing the adjusting seat 15 from rotating along with the screw 13 when it rotates, so that when the screw 13 rotates clockwise or counterclockwise, the adjusting seat 15 will only move up and down in the vertical direction.

[0031] The output shaft of the explosion-proof motor 14 is connected to one end of the screw 13. The explosion-proof motor 14 can be connected to one end of the screw 13 by means of a coupling or the like.

[0032] In this embodiment, the gripper mechanism includes a gripper 6, a rotating plate 16 rotatably connected to the bottom of the surface of the connecting plate 12, the rotating plate 16 being L-shaped, a through groove for the rotating plate 16 to rotate on the surface of the connecting plate 12, a connecting rod 17 rotatably connected to the bottom end of the adjusting seat 15 through the connecting plate 12, and the other end of the connecting rod 17 being rotatably connected to the rotating plate 16.

[0033] In this embodiment, the container 9 includes: a container body for covering the alarm probe; an air pipe 10 communicating with the container body and for connecting the air outlet of the telescopic rod; and at least two positioning parts 11 provided on the outer wall of the container body for cooperating with the clamping mechanism. The positioning parts 11 have, for example, protruding slots or ribs whose shape and position match the inner contour of the gripper 6. When the gripper 6 clamps, it can tightly engage with these positioning parts 11, thereby limiting and preventing rotation of the container 9, and preventing slippage or displacement due to shaking during remote operation.

[0034] In this embodiment, the head pipe 1, the expansion pipe 2, and the tail pipe 3 are all made of aerospace-grade aluminum alloy. Aerospace-grade aluminum alloy has a very high strength-to-weight ratio, which can reduce the weight of the entire device to the greatest extent while ensuring sufficient bending strength, making it convenient for operators to hold and work for a long time. The material has excellent corrosion resistance and can resist corrosive media in chemical environments. In addition, aluminum alloy is a typical non-sparking material, which will not produce sparks that can ignite flammable gases when it collides or rubs with other metals or hard objects, thus meeting the stringent safety requirements for use in explosion-proof areas.

[0035] Workflow: Based on the depth of the target confined space, the operator selects the required number of expander tubes 2, and connects the head tube 1, expander tubes 2, and tail tube 3 sequentially via sealing threads to assemble a telescopic rod of predetermined length. The operator then activates the explosion-proof motor 14 of the clamping mechanism, controlling the transmission assembly to open the grippers 6. The vessel 9 is placed between the open grippers 6, ensuring that the positioning part 11 on the outer wall of the vessel 9 is aligned with the inner side of the grippers 6. Next, the operator reverses the activation of the explosion-proof motor 14, causing the grippers 6 to clamp synchronously, thus securing the vessel 9. One end of the flexible hose is connected to the air tube 10 of the vessel 9, and the other end is connected to the first quick-connect plug 7 at the end of the tail tube 3 of the telescopic rod. First, connect the outlet. Then, connect the gas tube of the standard test gas cylinder to the second quick connector 8 at the end of the first tube 1 to complete the connection of the inlet. The user holds the first tube 1 of the telescopic rod and slowly lowers the other end, which has the clamping mechanism and the container 9, into the enclosed space from a safe area on the ground, approaching the gas concentration alarm to be tested. By observation, determine the alarm probe in the enclosed space. If the alarm probe is found to be installed at an angle, first loosen the locking bolt on the angle adjustment mechanism, and adjust the pitch or deflection angle of the clamping mechanism by rotating the torsion seat 5 so that the opening plane of the container 9 is parallel to the plane where the alarm probe is located. After adjusting the angle, tighten the locking bolts to securely position the clamping mechanism at that angle. Operate the telescopic rod to completely cover the alarm probe with the opening of the container 9 and fit it as close to the mounting surface as possible. Open the valve of the test gas cylinder, and the standard gas will enter the hollow gas delivery channel of the telescopic rod through the second quick connector 8, flow through the entire rod, and flow out from the first quick connector 7. Finally, it will be injected into the sealed container 9 through the hose and gas tube 10. The test gas will accumulate rapidly in the container 9. When its concentration reaches the preset threshold of the alarm, the alarm will emit an audible and visual alarm signal.

[0036] The above describes gas detection. However, when simulating the evaporation and leakage of specific liquids such as aviation fuel, a liquid testing mode can be used. In liquid testing mode, the user no longer connects to an external gas source. Instead, the user removes container 9, pours the prescribed amount of slow-release test liquid directly into the container, and then attaches and clamps the container 9 containing the test liquid onto the clamping mechanism. In this mode, the hollow gas delivery channel of the telescopic rod and the first quick-connect plug 7 and the second quick-connect plug 8 are not used. Once the container 9 covers the probe, the test liquid inside the container 9 will naturally evaporate without any active operation. The resulting oil vapor will gradually accumulate in the space of the container 9. As evaporation continues, the gas concentration inside the container 9 will continuously increase. When the concentration reaches the alarm's set threshold, the alarm will sound an alarm signal.

[0037] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A remote testing device for a sunken, enclosed space gas concentration alarm, characterized in that, The device includes a telescopic rod with a hollow structure inside forming an air supply channel. One end of the telescopic rod has an air inlet and the other end has an air outlet. A clamping mechanism is rotatably provided at the end of the telescopic rod away from the air inlet. The device also includes a vessel (9), which is detachably installed on the clamping mechanism. The vessel (9) is connected to the air outlet via a flexible hose.

2. The remote testing device for a sunken enclosed space gas concentration alarm according to claim 1, characterized in that, The vessel (9) includes: a vessel body for covering the alarm probe; an air pipe (10) communicating with the vessel body and for connecting the air outlet of the telescopic rod; and at least two positioning parts (11) provided on the outer wall of the vessel body for cooperating with the clamping mechanism.

3. The remote testing device for a sunken enclosed space gas concentration alarm according to claim 1, characterized in that, The telescopic rod includes: a head tube (1), at least one expansion tube (2) and a tail tube (3), and the tubes are detachably connected to each other by sealing threads.

4. The remote testing device for a sunken enclosed space gas concentration alarm according to claim 3, characterized in that, The air outlet is a first quick connector (7) located at the end of the tailpipe (3), and the air inlet is a second quick connector (8) located at the end of the headpipe (1).

5. The remote testing device for a sunken enclosed space gas concentration alarm according to claim 1, characterized in that, An adjustment mechanism for adjusting the angle of the clamping mechanism is provided between the clamping mechanism and the telescopic rod.

6. The remote testing device for a sunken enclosed space gas concentration alarm according to claim 5, characterized in that, The angle adjustment mechanism includes a connecting seat (4) and a torsion seat (5), and a positioning and locking bolt is provided between the connecting seat (4) and the torsion seat (5).

7. The remote testing device for a sunken enclosed space gas concentration alarm according to claim 6, characterized in that, The clamping mechanism includes a connecting plate (12), on which a connecting housing (18) connected to the torsion seat (5) is provided; at least two relatively movable gripper mechanisms are provided on the connecting plate (12); a transmission component for adjusting the synchronous opening or clamping of at least two gripper mechanisms is also provided on the connecting plate (12); and an explosion-proof motor (14) for driving the transmission component is provided on the connecting plate (12).

8. The remote testing device for a sunken enclosed space gas concentration alarm according to claim 7, characterized in that, The transmission assembly includes a screw (13) that rotates on the connecting plate (12), and an adjusting seat (15) is threaded onto the screw (13). The adjusting seat (15) is connected to the gripper mechanism through the connecting plate (12) via a connecting member. The output shaft of the explosion-proof motor (14) is connected to one end of the screw (13).

9. The remote testing device for a sunken enclosed space gas concentration alarm according to claim 8, characterized in that, The gripper mechanism includes a gripper (6), a rotating plate (16) rotatably connected to the bottom of the surface of the connecting plate (12), and a connecting rod (17) rotatably connected to the bottom of the adjusting seat (15). The other end of the connecting rod (17) is rotatably connected to the rotating plate (16).

10. The remote testing device for a sunken enclosed space gas concentration alarm according to claim 3, characterized in that, The head tube (1), the expansion tube (2) and the tail tube (3) are all made of aerospace-grade aluminum alloy.

Images