Wind speed identification line pipe unblocking and blocking device

Abstract

The invention relates to a wind speed identification line pipe unblocking device. The device comprises an airflow generation unit; the first end of the main ventilation pipeline is communicated with the output port of the airflow generation unit; the line pipe connector is arranged at the second end of the main ventilation pipeline and is used for being in sealed connection with a to-be-detected line pipe opening; the lower end of the detection branch pipe is communicated with the main ventilation pipeline; the light floating ball is accommodated in the detection branch pipe and can freely move up and down in the detection branch pipe; and the wind speed detection unit comprises a wind speed sensor arranged in the detection branch pipe and a display electrically connected with the wind speed sensor. By using the Bernoulli principle and the airflow path selection characteristic, the unobstructed, partially blocked and completely blocked states of the line pipe are directly converted into the motion state of the floating ball in the detection branch pipe and the difference of wind speed readings, and the accuracy and reliability of the detection result are remarkably improved. The device is simple in structure and convenient to operate, and the detection efficiency is remarkably improved compared with a traditional method.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment technology for building construction, and more specifically, to a wind speed identification device for unobstructed or blocked conduits. Background Technology

[0002] In building electrical engineering construction, the pre-installation of electrical conduits (referred to as conduits) is a crucial step. Conduits are typically laid within the formwork before concrete pouring and are permanently concealed afterward. Due to the pressure and vibration during concrete pouring, as well as uncontrollable factors during construction (such as debris falling in or conduit deformation), pre-installed conduits are highly prone to blockage. If blockages are not detected and addressed promptly, subsequent wiring procedures will be impossible, often requiring destructive methods such as chiseling through walls and floors to locate and clear the blockage, resulting in significant material waste, project delays, and economic losses.

[0003] Currently, the methods for checking the blockage of embedded conduits in construction practice are relatively primitive and inefficient. A common method is to try threading a thin steel wire or wire threader through the conduit after concrete curing and before wiring, relying on touch to determine if there is any obstruction. This method has significant drawbacks: first, it is inefficient, as testing a large number of embedded conduits one by one is time-consuming and labor-intensive; second, it lacks accuracy, as the steel wire may barely pass through for minor or localized blockages, but will still get stuck when threading thicker cables later, delaying the discovery of the problem; and third, it cannot quantify the degree of blockage. Another method involves injecting water into the conduit and observing the water level change, but this easily wets the inside of the conduit, hindering subsequent wiring, and is ineffective in horizontal pipelines.

[0004] Therefore, there is an urgent need for a device and method that can quickly, accurately, intuitively and non-destructively detect whether the pre-buried conduits are blocked and the degree of blockage before the construction of the decorative surface layer, so as to plan and deal with it in advance and avoid rework later. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a wind speed identification conduit blockage device, which aims to solve the problems existing in the prior art.

[0006] According to the present invention, a wind speed identification device for pipe blockage is provided, comprising: Airflow generating unit, used to generate detection airflow; The main ventilation duct has a first end and a second end, wherein the first end of the main ventilation duct is connected to the output port of the airflow generating unit; A conduit connector is located at the second end of the main ventilation pipe and is used to form a sealed connection with the conduit opening to be tested. The detection branch pipe is set vertically, and its lower end is connected to the main ventilation pipe to form an airflow diversion structure; A lightweight float is housed within the detection branch tube and can move freely up and down within the detection branch tube; its state is used to indicate changes in airflow. The wind speed detection unit includes a wind speed sensor disposed in the detection branch pipe and a display electrically connected to the wind speed sensor; A pressure relief structure is installed on the detection branch pipe.

[0007] Preferably, the pressure relief structure is at least one vent hole opened on the wall of the detection branch pipe.

[0008] Preferably, the vent is located in the upper middle part of the detection branch pipe, and above the position of the lightweight float when it is stationary.

[0009] Preferably, the top of the detection branch pipe is provided with an escape prevention structure to prevent the lightweight float from escaping from the top of the detection branch pipe under the action of strong airflow.

[0010] Preferably, the escape prevention structure is a reducing joint or a mesh grid with a diameter smaller than that of the lightweight float.

[0011] Preferably, the conduit connector includes a tapered probe made of an elastic material, the tapered probe having a tapered front end.

[0012] Preferably, the conduit connector further includes a variable diameter adjustment pipe section, through which the tapered probe is connected to the main ventilation pipe.

[0013] Preferably, the main ventilation duct includes a straight pipe, a tee pipe, and an angled elbow. The tee pipe has two horizontal interfaces and one vertical interface. The tee pipe is connected to the straight pipe through the two horizontal interfaces. The vertical interface is connected to the lower end of the detection branch pipe. The angled elbow is connected to the end of the straight pipe away from the airflow generating unit. The conduit connector is connected to the angled elbow.

[0014] Preferably, the angled elbow is a 45° elbow.

[0015] Preferably, the airflow generating unit is a handheld portable hair dryer.

[0016] The wind speed detection device for pipe blockage provided by this invention allows for easy determination of pipe blockage by observing the position and movement of a lightweight float in the detection branch pipe when the detection airflow generated by the airflow generation unit is introduced into the pipe to be tested through the main ventilation pipe and pipe connector. Quantitative data verification is further performed using a wind speed detection unit, with the two indicators mutually corroborating each other, significantly improving the accuracy and reliability of the detection results. Its overall structure is simply assembled from common pipe fittings and general-purpose instruments, offering advantages such as simple construction, low manufacturing cost, and ease of portability and operation. This device enables potential blockages to be detected and addressed before decoration construction, avoiding significant rework losses caused by subsequent wiring failures, and significantly improving detection efficiency compared to traditional methods. Attached Figure Description

[0017] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the invention with reference to the accompanying drawings.

[0018] Figure 1 A schematic diagram of a wind speed identification conduit unblocking device according to an embodiment of the present invention is shown.

[0019] Figure 2 A schematic diagram of the conduit connector in the wind speed identification conduit unblocking device according to an embodiment of the present invention is shown.

[0020] Figure 3 A schematic diagram of the structure of the detection branch pipe in the wind speed identification conduit blockage device according to an embodiment of the present invention is shown.

[0021] Figure 4 A schematic diagram of the wind speed detection unit in the wind speed identification conduit unblocking device according to an embodiment of the present invention is shown.

[0022] Figure 5 A schematic diagram of the connection structure between the female threaded tapered tube and the male threaded connector in the wind speed identification conduit unblocking device according to an embodiment of the present invention is shown.

[0023] In the diagram: 1. Handheld portable hair dryer; 2. Main ventilation duct; 21. Straight pipe; 22. T-joint; 23. Angle elbow; 3. Conduit connector; 31. Tapered probe; 32. Variable diameter adjustment pipe section; 4. Detection branch pipe; 5. Lightweight float; 6. Wind speed detection unit; 61. Wind speed sensor; 62. Display; 63. Control line; 7. Reducer; 8. Female threaded tapered pipe; 9. Male threaded connector. Detailed Implementation

[0024] Various embodiments of the invention will now be described in more detail with reference to the accompanying drawings. In the various drawings, the same elements are indicated by the same or similar reference numerals. For clarity, the various parts in the drawings are not drawn to scale.

[0025] This invention provides a wind speed identification device for pipe blockage, see [link to relevant documentation]. Figures 1 to 3 The wind speed identification conduit blockage device includes: an airflow generating unit, a main ventilation pipe 2, a conduit connector 3, a detection branch pipe 4, a lightweight float 5, and a wind speed detection unit 6. The airflow generating unit generates detection airflow; the main ventilation pipe 2 has a first end and a second end, the first end of which is connected to the output port of the airflow generating unit; the conduit connector 3 is located at the second end of the main ventilation pipe 2 and forms a sealed connection with the conduit opening to be detected; the detection branch pipe 4 is vertically arranged, its lower end connected to the main ventilation pipe 2, forming an airflow diversion structure; the lightweight float 5 is housed within the detection branch pipe 4 and can move freely up and down within the detection branch pipe 4, its state indicating airflow changes; the wind speed detection unit 6 includes a wind speed sensor 61 disposed within the detection branch pipe 4 and a display 62 electrically connected to the wind speed sensor 61. The detection branch pipe 4 is equipped with a pressure relief structure.

[0026] Specifically, the airflow generating unit is a handheld portable hair dryer 1, which is required to have a "cool air" setting to prevent the plastic parts from softening and deforming due to prolonged exposure to hot air. The airflow outlet of the handheld portable hair dryer 1 is typically circular and connected to it via a female-threaded tapered tube 8. The large end of the female-threaded tapered tube 8 is adapted to the shape of the airflow outlet of the handheld portable hair dryer 1, while the small end has internal threads for converging and guiding the airflow.

[0027] The main ventilation duct 2 includes a straight pipe 21, a tee pipe 22, and an angled elbow 23. The tee pipe 22 has two horizontal interfaces and one vertical interface. The tee pipe 22 is connected to the straight pipe 21 through the two horizontal interfaces, and the vertical interface is connected to the lower end of the detection branch pipe 4. The angled elbow 23 is connected to the end of the straight pipe 21 away from the airflow generating unit. The conduit connector 3 is connected to the angled elbow 23. In this embodiment, the straight pipe 21 is a PPR pipe, and the straight pipe 21 is connected to a female threaded tapered pipe 8 through a male threaded connector 9. Figure 5As shown, a male threaded connector 9 and a female threaded tapered pipe 8 are connected by a matching thread, achieving the transition from the handheld portable hair dryer 1 to the straight pipe 21. The other end of the male threaded connector 9 is connected to the straight pipe 21 by heat fusion or adhesive bonding. The tee pipe 22 is a PPR reducing tee. In this embodiment, the straight pipe 21 has a diameter of DN32, both horizontal interfaces of the tee pipe 22 are DN32, and the vertical interface is DN25. The straight pipe 21 is broken in the middle, divided into two sections: a front section closer to the handheld portable hair dryer 1 and a rear section further away from the handheld portable hair dryer 1. The two horizontal interfaces of the tee pipe 22 are connected to the front and rear sections of the straight pipe by heat fusion, respectively. In this embodiment, the angled elbow 23 is a 45° elbow with a diameter of DN32 and is made of PPR. The end of the straight pipe 21 (the end of the rear section away from the tee pipe 22) is connected to the angled elbow 23 by heat fusion. The 2345° angle of the bend makes the subsequent components naturally point downwards, making it easy for operators to align the conduit connector 3 with the pre-embedded conduit box, which is usually located on the ground or at the base of the wall, when standing or bending over.

[0028] The conduit connector 3 includes a tapered probe 31 made of elastic material with a tapered front end. The conduit connector 3 also includes a variable diameter adjustment section 32, through which the tapered probe 31 is connected to the main vent pipe 2. Specifically, in this embodiment, a variable diameter adjustment section 32 is connected to the outlet end of the 45° PPR elbow 23. This variable diameter adjustment section 32 can be a short connector with external threads. The variable diameter adjustment section 32 can be freely adjusted and connected according to the actual size of the conduit being tested, allowing the entire device to better serve the blockage detection work. A tapered probe 31 is installed at the end of the variable diameter adjustment section 32. This tapered probe 31 is made of high-quality rubber, has a certain length and taper, with a larger outer diameter suitable for pressing into a DN25 conduit and a smaller outer diameter suitable for pressing into a DN20 conduit. By selecting tapered probes 31 with different large-end diameters, or using variable-diameter adjustment pipe sections 32 with different diameters, various specifications of conduit diameters can be adapted.

[0029] The detection branch pipe 4 is a transparent pipe to facilitate observation of the position and status of the lightweight float 5 within it. In this embodiment, the detection branch pipe 4 is a DN25 PP pipe, and its lower end is connected to the vertical interface of the tee pipe 22 via heat fusion.

[0030] In this embodiment, the wind speed sensor 61 is a portable anemometer impeller sensor, and the display 62 is a portable anemometer display, such as... Figure 4As shown, the wind speed sensor 61 is electrically connected to the display 62 via a control line 63. The casing of the wind speed sensor 61 has pre-drilled screw holes on its side. A small hole is pre-drilled on the pipe wall approximately 20mm from the lower end of the detection branch pipe 4. The wind speed sensor 61 is inserted into the pipe, aligning the screw holes on the casing with the small hole on the pipe wall. A self-tapping screw is then screwed into the detection branch pipe 4 from the outside to securely fix the wind speed sensor 61 to the pipe wall. A small amount of sealant can be applied to the self-tapping screw during installation to prevent minor air leakage from affecting sensitivity. The control line 63 of the wind speed sensor 61 extends from the pipe wall and connects to the display 62. The back of the display 62 has clips or Velcro, allowing it to be easily attached to the outer wall of the detection branch pipe 4 or the outer wall of the vertical interface of the T-connector 22 for easy reading of values.

[0031] The lightweight float 5 is a hollow polyethylene sphere with a smooth surface and a diameter slightly smaller than the inner diameter of the detection branch pipe 4. The lightweight float 5 is placed above the wind speed sensor 61.

[0032] The top of the detection branch pipe 4 is equipped with an escape-prevention structure to prevent the lightweight float 5 from escaping from the top of the detection branch pipe 4 under strong airflow. The escape-prevention structure is a reducing connector 7 with a diameter smaller than that of the lightweight float 5, or a mesh grille. In this embodiment, the detection branch pipe 4 is a DN25 PP pipe. A DN25 to DN20 reducing connector 7 is heat-fused to the top of the detection branch pipe 4 as an escape-prevention structure. The upper DN20 diameter is sufficient to ensure airflow, but effectively prevents the lightweight float 5 from passing through the detection branch pipe 4.

[0033] The pressure relief structure consists of at least one vent hole on the wall of the detection branch pipe 4. The vent hole is located in the upper middle part of the detection branch pipe 4, and above the position of the lightweight float 5 when stationary. In this embodiment, one vent hole is opened on each radially side of the middle part of the detection branch pipe 4. The vent holes prevent reverse air pressure from forming within the device and damaging the handheld portable hair dryer 1 in the event of blockage of the tested conduit, thus providing excellent protection.

[0034] The usage and working principle of this wind speed identification conduit unblocking device are as follows: Holding the wind speed identification conduit unblocking device, forcefully and vertically press the front end of the conduit 31 into the opening of the pre-buried conduit to be tested. The outer wall of the conduit 31 forms a tight contact with the inner wall of the conduit, establishing a basic sealed connection.

[0035] Keep the device stable and start the handheld portable blower 1. Simultaneously, the operator should observe the state of the lightweight float 5 inside the transparent detection tube 4, as well as the changes in the readings on the portable anemometer display 62. Continue blowing air for approximately 5-8 seconds until the wind speed readings stabilize.

[0036] The blockage status of the conduit is determined based on the observed state of the lightweight float 5 and the wind speed displayed on the monitor 62: ① If the conduit is unobstructed, the airflow velocity in the main ventilation pipe 2 is high and the pressure is low, while the airflow velocity in the detection branch pipe 4, which is connected to atmospheric pressure, is slow and the pressure is high. According to Bernoulli's principle, a pressure difference will be formed, so the lightweight float 5 will always sink to the bottom of the detection branch pipe 4, remaining stationary or only experiencing very slight vibrations. The wind speed sensor 61 will hardly detect any airflow, and the monitor 62 will not display any wind speed; ② If the conduit is partially blocked, the lightweight float 5 will be lifted by the airflow according to the pressure difference and will suspend in the detection branch pipe 4. The airflow exhibits an unstable state of fluctuating up and down, and the display 62 will show the wind speed based on an upward pressure. This wind speed will be between the rated wind speed and zero wind speed of the handheld portable hair dryer 1; ③ If the conduit is completely blocked, all the airflow will enter the detection branch pipe 4 through the vertical interface of the three-way pipe 22. The lightweight float 5 will float upward and, when stable, will reach the reducing joint 7 at the top of the detection branch pipe 4. At this time, the vent will release the air pressure inside the detection branch pipe 4, thereby protecting the handheld portable hair dryer 1, and the wind speed displayed on the display 62 will reach the rated wind speed of the handheld portable hair dryer 1. In this way, we can determine the conduit blockage status based on the above three situations.

[0037] For conduits identified as "partially blocked" or "completely blocked," immediately make a clear mark at the junction box location. Then, the work team can use a specialized cleaning rod, steel wire, or high-pressure air gun to perform targeted unblocking operations. After unblocking, the device can be used again for a re-inspection to confirm successful unblocking.

[0038] Compared with the prior art, the wind speed identification conduit unblocking device provided by the present invention has the following beneficial effects: This invention creatively utilizes Bernoulli's principle and the distribution law of fluids in parallel paths. The open / closed state of the conduit directly changes the overall flow resistance of the system, thereby affecting the airflow and velocity diverted to the detection branch. These changes are captured by a sensitive lightweight float and a wind speed sensor. The dual indicators of visualization (float) and data (wind speed) corroborate each other, greatly improving the accuracy and reliability of the judgment and reducing false positives and false negatives.

[0039] The main body of the device of this invention can be assembled from commonly available plastic water pipe fittings (PPR pipes, connectors), a float, and an impeller-type anemometer. It requires no complex electronic components or precision mechanical structures, and the overall material cost can be kept extremely low, making it suitable for large-scale deployment and promotion in construction projects with limited budgets.

[0040] This device can be operated by a single person. Testing a single point requires only three steps: "inserting the pipe, starting the blower, and observing the reading," and the entire process can be completed in a short time. Compared to the traditional method of threading steel wires one by one for testing, efficiency is greatly improved, making it particularly suitable for modern building projects with large floor areas and numerous pre-embedded pipe points, saving significant manpower and construction time.

[0041] By adopting a tapered probe and a variable diameter adjustment pipe section, this device can flexibly adapt to various pre-buried conduits of different diameters commonly found on construction sites, eliminating the need for special tools for each conduit diameter and reducing the complexity of equipment management and use.

[0042] In summary, this invention, through ingenious fluid dynamics structural design, transforms the complex problem of detecting internal blockages in conduits into a simple and intuitive physical phenomenon observation and data reading, providing an unprecedentedly efficient and low-cost construction quality control tool. It significantly improves the accuracy and reliability of detection results. The overall structure is easily assembled from common pipe fittings and general-purpose instruments, offering outstanding advantages such as simple construction, low manufacturing cost, and ease of portability and operation. This device enables potential blockages to be detected and addressed before decoration construction, avoiding significant rework losses caused by subsequent wiring failures, and significantly improving detection efficiency compared to traditional methods.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A wind speed discrimination line pipe unblocking device, characterized by, The utility model relates to a kind of gas flow detection device, including: Air flow generating unit for generating detection air flow; Main ventilation pipeline, with first end and second end, the first end of the main ventilation pipeline is communicated with the output port of the air flow generating unit; Pipe connector is arranged at the second end of the main ventilation pipeline, for forming sealed connection with the pipe orifice to be detected; Detection branch pipe is vertically arranged, and its lower end is communicated with the main ventilation pipeline, forming air flow shunt structure; Light ball, housed in the detection branch pipe, can freely move up and down in the detection branch pipe, and its state is used to indicate air flow change; Wind speed detection unit, including wind speed sensor arranged in the detection branch pipe, and display electrically connected with the wind speed sensor; Pressure relief structure is arranged on the detection branch pipe.

2. The wind speed discrimination stringer according to claim 1, wherein, The pressure relief structure is at least one vent hole opened on the wall of the detection branch pipe.

3. The wind speed discrimination line pipe pigging apparatus of claim 2, wherein, The vent hole is located in the upper middle part of the detection branch pipe and above the position of the light ball in the static state.

4. The wind speed discrimination stringer according to claim 1, wherein, The top of the detection branch pipe is provided with anti-escape structure for preventing the light ball from escaping from the top of the detection branch pipe under the action of strong air flow.

5. The wind speed discrimination line pipe pigging apparatus of claim 4, wherein, The anti-escape structure is a reducing joint or a mesh grid with smaller diameter than the diameter of the light ball.

6. The wind speed discrimination stringer of claim 1, wherein, The pipe connector includes a tapered probe tube made of elastic material, and the front end of the tapered probe tube is in a tapered structure.

7. The wind speed discrimination line pipe pigging apparatus of claim 6, wherein, The pipe connector further includes a variable-diameter adjusting pipe segment, and the tapered probe tube is connected to the main ventilation pipeline through the variable-diameter adjusting pipe segment.

8. The wind speed discrimination stringer according to claim 1, wherein, The main ventilation pipeline includes a straight pipe, a tee pipe and an angle elbow, the tee pipe has two horizontal interfaces and a vertical interface, the tee pipe is connected to the straight pipe through the two horizontal interfaces, the vertical interface is communicated with the lower end of the detection branch pipe, and the angle elbow is connected to the end of the straight pipe away from the air flow generating unit.

9. The wind speed discrimination line pipe pigging apparatus of claim 8, wherein, The angle elbow is a 45° elbow.

10. The wind speed discrimination stringer pipe penetrating device according to claim 1, characterized in that, The air flow generating unit is a handheld portable hair dryer.

Images