Detachable flexible air sampling tube system for easy high-altitude maintenance and its disassembly and assembly method

Abstract

This invention relates to a detachable flexible air sampling tube system and its assembly / disassembly method for easy high-altitude maintenance. It is applicable to the field of air sampling tubes. The problem solved is to provide a detachable flexible air sampling tube system and its assembly / disassembly method for easy high-altitude maintenance. The technical solution is: a detachable flexible air sampling tube system for easy high-altitude maintenance, comprising: a first air tube located directly below an inspection port on the roof, the length of which is adapted to the length of the inspection port in the direction parallel to the axis of the first air tube; a second air tube connected to one end of the first air tube via a flexible connecting fitting, the second air tube being fixedly installed on the roof above it by a bracket; a third air tube connected to the other end of the first air tube via a flexible connecting fitting, the third air tube being fixedly installed on the roof above it by a bracket; and a lifting mechanism connected between the flexible connecting fittings at both ends of the first air tube and the roof above it.

Description

Technical Field

[0001] This invention relates to a detachable flexible air sampling tube system that is easy to maintain at high altitudes and a method for its assembly and disassembly. Background Technology

[0002] To facilitate the maintenance of major electrical equipment, maintenance covers are installed on the top surfaces of the main electrical equipment rooms (such as GIS rooms, transformer rooms, reactor rooms, diesel engine rooms, etc.) in the wind farm, so that the maintenance covers can be removed and the electrical equipment can be hoisted out when maintenance is needed.

[0003] The very early smoke detection system in a fire alarm system requires horizontal air sampling tubes to be installed at certain intervals under the top surface of the structure. After the inspection cover is removed, the air sampling tubes are still located at the lower end of the inspection cover opening, which hinders the removal of electrical equipment. Therefore, the air sampling tubes need to be removed.

[0004] Since air sampling tubes are typically installed at heights of ten to twenty meters, during equipment operation and maintenance, it is difficult for maintenance personnel to reach the installation height of the air sampling tubes after the scaffolding has been removed, making the reversible removal of the air sampling tubes extremely difficult. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a detachable flexible air sampling tube system and its disassembly and assembly method that facilitates high-altitude maintenance, in view of the above-mentioned problems.

[0006] The technical solution adopted in this invention is: a detachable flexible air sampling tube system that facilitates high-altitude maintenance, characterized in that it comprises:

[0007] A first air pipe is located directly below the access panel on the roof, and the length of the first air pipe is adapted to the length of the access panel in the direction parallel to the axis of the first air pipe.

[0008] The second air pipe is connected to one end of the first air pipe via a flexible connecting pipe fitting, and the second air pipe is fixedly installed on the roof above it by a bracket;

[0009] The third air pipe is connected to the other end of the first air pipe via a flexible connecting pipe fitting, and the third air pipe is fixedly installed on the roof above it by a bracket.

[0010] The lifting mechanism is connected between the flexible connecting pipes at both ends of the first air pipe and the roof above. The lifting mechanism includes a first state and a second state. In the first state, the lifting mechanism suspends the end of the first air pipe at a height that matches the corresponding second and third air pipes. In the second state, the lifting mechanism lifts the end of the first air pipe upward to a position close to the inspection port.

[0011] Using the aforementioned technical means, the air pipe is divided into a first air pipe located below the inspection port and a second and third air pipe at both ends of the first air pipe. The first and second air pipes and the first and third air pipes are connected by a retractable flexible connecting pipe. With the help of a lifting mechanism, the first air pipe can be lifted to a position close to the upper inspection port, which facilitates the disassembly and assembly of the first air pipe and thus facilitates the transportation of electrical equipment.

[0012] In some embodiments, the flexible connecting pipe includes a silicone connecting pipe and an end pipe connected to the end of the silicone connecting pipe. The end pipe has an external thread and is threadedly connected to a threaded connecting sleeve. The end of the first air pipe has an external thread that can be adapted to the threaded connecting sleeve.

[0013] In some embodiments, a groove is formed on the outer surface of the end tube to facilitate the connection between the lifting mechanism and the end tube.

[0014] In some embodiments, in its natural state, the silicone connecting tube extends inward into the end tube.

[0015] In some embodiments, the lifting mechanism has a winch and a wire rope, wherein the winch is located below the roof access panel and is fixed to the roof via a connector, the upper end of the wire rope is wound around the winch, and the lower end of the wire rope is connected to the flexible connecting pipe.

[0016] In some embodiments, the bracket has a horizontally fixed steel wire rope, which is connected to the positioning bracket and / or the roof structural beam via hooks and fastening brackets, and the positioning bracket is connected to the roof structural beam; the horizontally fixed steel wire rope is connected to the corresponding second or third air pipe via clips.

[0017] A method for disassembling and assembling the aforementioned detachable flexible air sampling tube system, which facilitates high-altitude maintenance, is characterized by comprising:

[0018] The disassembly method includes the following steps:

[0019] 1) Under normal operating conditions, the first air pipe is at the same horizontal height as the second and third air pipes under the control of the lifting mechanism;

[0020] 2) After the inspection cover on the roof is removed, the dismantling personnel on one side of the roof inspection opening operate the lifting mechanism below the inspection opening, so that the lifting mechanism drives the flexible connecting pipe and the end of the first air pipe to move upward.

[0021] 3) Continue until the flexible connecting pipe and the end of the first air pipe are raised to a position that the dismantling personnel can reach;

[0022] 4) The dismantling personnel grasp the flexible connecting pipe and the first air pipe with their hands and separate the flexible connecting pipe and the first air pipe;

[0023] 5) The demolition personnel on the other side of the roof access opening operate the lifting mechanism below the access opening and repeat steps 2), 3), and 4) to separate the other end of the first air pipe from the flexible connecting pipe.

[0024] Installation method, including the following steps:

[0025] 1) With the access cover open, the installer is positioned at the edge of the roof access opening and moves the flexible connecting pipe upward by operating the lifting mechanism;

[0026] 2) Until the end of the flexible connecting pipe is raised to a position that can be reached by hand, hold the first air pipe to be installed by hand and align it with the end of the flexible connecting pipe.

[0027] 3) Another installer located on the other side of the roof access opening repeats steps 1) and 2) to connect the flexible connecting pipe below the other side of the access opening to the first air pipe.

[0028] 4) The installers on both sides of the inspection port simultaneously operate the lifting mechanism, causing the two ends of the first air pipe to retract downwards along the tension of the flexible connecting pipe fittings, until the two ends of the first air pipe correspond to the second and third air pipes respectively.

[0029] The beneficial effects of the present invention are: (1) During the maintenance of the main electrical equipment, the problem of the difficulty in removing and installing the air sampling tube at high altitude is overcome, and the removal and reinstallation of the air sampling tube above the maintenance cover is realized; (2) The raw material cost is low and the manufacturing difficulty is small. All materials in the system are mature materials or finished products on the market; (3) The operation is simple. Only two operators are needed to operate at the same time. Under normal circumstances, the removal or installation of an air sampling tube takes no more than 10 minutes. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0031] Figure 2 This is a schematic diagram of the flexible connecting pipe in the embodiment.

[0032] Figure 3 for Figure 2 Projection diagram from the perspective of the A-A axis.

[0033] Figure 4 This is a schematic diagram of a flexible connecting pipe fitting in its natural state.

[0034] 1. Fastening bracket; 2. Positioning bracket; 3. Hook; 4. Horizontal fixed steel wire rope; 5. Buckle; 61. First air pipe; 62. Second air pipe; 63. Third air pipe; 7. Flexible connecting pipe fitting; 8. Winch; 9. Steel wire rope; 10. Silicone connecting pipe; 11. Groove; 12. External thread; 13. Threaded connecting sleeve; 14. End pipe; 15. Inspection cover. Detailed Implementation

[0035] like Figure 1 As shown, this embodiment is a detachable flexible air sampling tube system that facilitates high-altitude maintenance. It is located under the roof structure of the reactor room of the offshore converter station of the wind farm transmission project. The middle of the roof structure is the roof inspection port, which is equipped with an inspection cover. The entire air sampling tube system is arranged horizontally under the roof, passing under the roof structure and under the roof inspection port.

[0036] In this example, the detachable flexible air sampling tube system includes a first air tube, a second air tube, a third air tube, and a lifting mechanism. The first air tube is located directly below the roof access panel, and its length is adapted to the length of the roof access panel in the direction parallel to the first air tube. The second and third air tubes are located below the roof structure (not the access panel) and are connected to the two ends of the first air tube, respectively. The second air tube is connected to one end of the first air tube via a flexible connecting fitting, and the third air tube is connected to the other end of the first air tube via a flexible connecting fitting.

[0037] In this embodiment, the second air pipe is fixed to the roof above by a bracket. The bracket includes a horizontal fixing steel wire rope, a positioning bracket, and a fastening bracket. The positioning bracket is vertically installed at the bottom of each structural beam in the air pipe path by welding. The lower end of each positioning bracket in the path is at the same height. The positioning bracket is used to provide a suitable installation height for the horizontal fixing steel wire rope. The fastening bracket is installed on each positioning bracket and the roof structural beam at the corresponding installation height on the air pipe path.

[0038] In this example, the fastening bracket has openings, and a horizontal fixing wire rope is connected via hooks. One side of each hook is hooked into an opening on the fastening bracket, and the other side of the hook is used to tie the horizontal fixing wire rope, which is then taut between the two hooks. For horizontal fixing wire ropes with long paths, a positioning bracket is installed below the structural beam in the center of the path. The positioning bracket has openings along the path of the horizontal fixing wire rope to provide support for it.

[0039] In this example, the second air pipe is fixed to the bottom of the horizontal fixed steel wire rope by a buckle, and the second air pipe is directly fixed to the fastening bracket by the buckle at the end of the first air pipe.

[0040] In this embodiment, the third air pipe is fixed to the roof above by a bracket, and the bracket structure is exactly the same as that of the second air pipe bracket.

[0041] like Figure 2 , 3 As shown, in this embodiment, the flexible connecting pipe includes a silicone connecting pipe and an end pipe coaxially connected to the end of the silicone connecting pipe. The outer side of the end pipe has a groove and an external thread, and a threaded connecting sleeve is threadedly connected to the end pipe. The end of the first air pipe has an external thread that can be adapted to the threaded connecting sleeve.

[0042] In this example, one end of the flexible connecting pipe is connected to the corresponding second or third air pipe via a silicone connecting pipe, and the other end is connected to the end of the first air pipe via an end pipe, and the end pipe and the first air pipe are connected via a threaded connecting sleeve.

[0043] In this embodiment, the flexible connecting pipe is in its natural state, with its silicone connecting pipe extending inward into the end pipe (see...). Figure 4 When the flexible connecting pipe is under tension, the silicone connecting pipe is pulled out from the end pipe and can be stretched, thereby causing the flexible connecting pipe to elongate as a whole.

[0044] In this embodiment, the lifting mechanism is set at both ends of the first air pipe. The lifting mechanism has a winch (hand-cranked). The winch bracket is installed on the side of the vertical structural beam below the edge of the roof inspection port by welding. The installation position is located where an average-height maintenance worker can reach down from the roof. The winch is equipped with a steel wire rope. One end of the steel wire rope is wound around the winch, and the other end is connected to the groove of the end tube of the first air pipe below.

[0045] In this example, the lifting mechanism includes a first state and a second state. In the first state, the lifting mechanism suspends the end of the first air pipe at a height that matches the corresponding second and third air pipes. In the second state, the lifting mechanism lifts the end of the first air pipe upward to a position close to the access port.

[0046] The air sampling tube system disassembly method in this embodiment includes the following steps:

[0047] 1) Under normal operating conditions, the inspection cover is not removed, the first air pipe is connected to the second and third air pipes through a flexible connecting fitting, and is at the same horizontal level as the second and third air pipes. The air sampling pipe system is operating normally.

[0048] 2) After the inspection cover is removed, the dismantling personnel are positioned at the edge of the inspection cover opening on the roof. By rotating the hand-cranked winch, the steel wire rope pulls the end pipe of the second air pipe upward, the silicone connecting pipe is stretched and gradually comes out from the inside of the end pipe, and continues to stretch, and the end of the first air pipe moves upward.

[0049] 3) Until the end of the flexible connecting pipe and the end of the first air pipe are raised to a position that the dismantling personnel can reach;

[0050] 4) Hold the first air pipe directly below the inspection cover opening with one hand, and rotate the threaded connecting sleeve with the other hand until the flexible connecting pipe separates from the end of the first air pipe;

[0051] With one hand still holding the first air pipe, the demolition worker uses the other hand to turn the hand-cranked winch in the opposite direction, causing the end pipe to retract downwards along the elastic tension of the silicone connecting pipe until the end pipe and the second air pipe are horizontal. The silicone connecting pipe then re-enters the end pipe, and the end face of the second air pipe and the side of the end pipe are pressed together again.

[0052] 5) Another demolition worker located on the other side of the roof access cover turns the hand-cranked winch on the other side and repeats steps 2), 3) and 4) to separate the other end of the first air pipe below the other side of the access cover from the flexible connecting pipe, thereby achieving complete separation of the first air pipe directly below the access cover.

[0053] The installation method of the air sampling tube system in this embodiment includes the following steps:

[0054] 1) With the inspection cover open, the installer is positioned at the edge of the inspection cover opening on the roof. By rotating the hand-cranked winch, the wire rope pulls the end tube upward, stretching the silicone connecting tube and gradually pulling it out from the inside of the end tube, continuing to stretch.

[0055] 2) Until the end of the flexible connecting pipe is raised to a position that the installer can reach, the installer holds the first air pipe of the inspection port to be installed with one hand and aligns it with the end pipe, and rotates the threaded connecting sleeve with the other hand until the flexible connecting pipe is connected to the first air pipe, so that the first and second air pipes are connected.

[0056] 3) Another installer located on the other side of the roof access cover rotates the hand-cranked winch on the other side and repeats steps 1) and 2) to connect the other section of the first air pipe with the flexible connecting pipe, thus connecting the first and third air pipes.

[0057] 4) The installers on both sides of the inspection cover simultaneously rotate the hand-cranked winch in the opposite direction, causing the end tube to retract downwards along the tension of the silicone connecting tube until the end tube is horizontal with the second and third air tubes. The silicone connecting tube then re-enters the end tube, and the end faces of the second and third air tubes abut against the sides of the corresponding end tubes again, completing the installation of the air sampling tube system.

Claims

1. A method for disassembling and assembling a detachable flexible air sampling tube system that facilitates high-altitude maintenance, characterized in that, include: The disassembly method includes the following steps: Under normal operating conditions, the first air pipe is at the same horizontal height as the second and third air pipes under the control of the lifting mechanism; After the inspection cover on the roof is removed, the dismantling personnel on one side of the roof inspection opening operate the lifting mechanism below the inspection opening, causing the lifting mechanism to move the flexible connecting pipe and the end of the first air pipe upward. Until the flexible connecting pipe and the end of the first air pipe rise to a position accessible to the dismantling personnel; The dismantling personnel grasped the flexible connecting pipe and the first air pipe with their hands and separated them. On the other side of the roof access opening, the demolition personnel operate the lifting mechanism below the access opening and repeat steps 2), 3), and 4) to separate the other end of the first air pipe from the flexible connecting pipe. Installation method, including the following steps: With the access cover open, the installer is positioned at the edge of the roof access opening and moves the flexible connecting pipe upward by operating the lifting mechanism. Continue until the end of the flexible connecting pipe is within reach of your hand. Hold the first air pipe to be installed and align it with the end of the flexible connecting pipe. Another installer, located on the other side of the roof access opening, repeats steps 1) and 2) to connect the flexible connecting pipe below the other side of the access opening to the first air pipe. The installers on both sides of the inspection port simultaneously operate the lifting mechanism, causing the two ends of the first air pipe to retract downwards along the tension of the flexible connecting pipe fittings until the two ends of the first air pipe correspond to the second and third air pipes respectively. The detachable flexible air sampling tube system, which facilitates high-altitude maintenance, includes: A first air pipe is located directly below the access panel on the roof, and the length of the first air pipe is adapted to the length of the access panel in the direction parallel to the axis of the first air pipe. The second air pipe is connected to one end of the first air pipe via a flexible connecting pipe fitting, and the second air pipe is fixedly installed on the roof above it by a bracket; The third air pipe is connected to the other end of the first air pipe via a flexible connecting pipe fitting, and the third air pipe is fixedly installed on the roof above it by a bracket. A lifting mechanism is connected between the flexible connecting pipes at both ends of the first air pipe and the roof above. The lifting mechanism includes a first state and a second state. In the first state, the lifting mechanism suspends the end of the first air pipe at a height that is compatible with the corresponding second and third air pipes. In the second state, the lifting mechanism lifts the end of the first air pipe upward to a position close to the inspection port. The flexible connecting pipe includes a silicone connecting pipe and an end pipe connected to the end of the silicone connecting pipe. The end pipe has an external thread and is threadedly connected to a threaded connecting sleeve. The end of the first air pipe has an external thread that can be adapted to the threaded connecting sleeve.

2. The method for disassembling and assembling the detachable flexible air sampling tube system for easy high-altitude maintenance according to claim 1, characterized in that: The outer surface of the end tube has a groove to facilitate the connection between the lifting mechanism and the end tube.

3. The method for disassembling and assembling the detachable flexible air sampling tube system for easy high-altitude maintenance according to claim 1, characterized in that: In its natural state, the silicone connecting tube extends inward into the end tube.

4. The method for disassembling and assembling the detachable flexible air sampling tube system for easy high-altitude maintenance according to claim 1, characterized in that: The lifting mechanism has a winch and a wire rope. The winch is located below the roof access panel and is fixed to the roof via a connector. The upper end of the wire rope is wound around the winch, and the lower end of the wire rope is connected to the flexible connecting pipe.

5. The method for disassembling and assembling the detachable flexible air sampling tube system for easy high-altitude maintenance according to claim 1, characterized in that: The support has a horizontally fixed steel wire rope, which is connected to the positioning support and / or the roof structure beam via hooks and fastening supports. The positioning support is connected to the roof structure beam. The horizontally fixed steel wire rope is connected to the corresponding second or third air pipe via buckles.

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