Spherical pipeline detector recovery device

Abstract

The invention discloses a spherical pipeline detector recovery device which comprises a folding rod, one end of the folding rod is fixed to a folding support, and the other end of the folding rod is connected with a ball recovery net; a traction floater is fixed on the ball collecting net; the boosting rod penetrates through a middle hole of the folding support to make contact with the traction floater, and when the folding rod is in a folded state, the traction floater is located at the tail end of the folding rod. A traction cable is fixed to the folding support and used for pulling the whole recovery device. The simple automatic folding mechanism is adopted, so that the recovery device can effectively adapt to pipelines with different diameters, and recovery of the detection balls is facilitated.

Description

Technical Field

[0001] The invention relates to the field of pipeline fluid data collection and leakage detection, and in particular to a spherical pipeline detector recovery device. Background Art

[0002] In the modern industrial field, fluid pipeline systems are widely used in the transportation of liquids and gases such as oil, natural gas, and water. The safe operation of pipeline systems is crucial to ensuring energy supply, maintaining the environment, and maintaining the stability of production and life. However, pipeline leakage is a very prominent problem, which will lead to serious consequences such as waste of resources, environmental pollution, safety accidents, and major economic losses. It can be seen that the development of efficient leakage detection technology and equipment is of great significance to ensure the safe operation of pipelines.

[0003] Traditional leak detection methods include manual inspection, pressure monitoring and flow monitoring. Manual inspection is inefficient and inaccurate, and this limitation is more pronounced in long-distance and complex pipeline systems. Although pressure monitoring and flow monitoring methods can detect leaks to a certain extent, their ability to detect leaks in small leaks or complex working conditions is limited. With the development of science and technology, sensor technology has made significant progress, and sensor-based leak detection methods have received widespread attention. For example, U.S. Patent US010653027B2 discloses a spherical sensor device that can flow freely in a fluid, can collect fluid data and fluid pipeline data, and is suitable for fluid pipelines of liquid and gas media; European Patent EP3677889B1 also mentions a spherical sensor device for measuring the properties of fluids and fluid pipelines. However, the sensor devices in these patents all face the problem of recovery, especially when detecting pipelines of different diameters, each specification of pipeline needs to be equipped with a recovery device of corresponding specifications, which greatly limits the scope of application of pipeline detection ball recovery devices.

[0004] In the field of pipeline detection, spherical detectors have unique advantages. However, at present, there is a lack of effective standardized design for the recovery device after the spherical detector completes the detection task. Most of the existing related technologies focus on the detection part but ignore the recovery link. Therefore, there is an urgent need for an efficient recovery device specifically for spherical pipeline detectors to make up for the shortcomings of existing technologies in this regard. Summary of the invention

[0005] The present invention provides a spherical pipeline detector recovery device. The present invention adopts a simple automatic folding mechanism, which can make the recovery device effectively adapt to pipelines of different diameters and facilitate the recovery of the detection ball. See the following description for details:

[0006] A spherical pipeline detector recovery device, the device comprising: a folding rod,

[0007] One end of the folding rod is fixed on the folding bracket, and the other end is connected to the ball collecting net; a traction float is fixed on the ball collecting net; the booster rod passes through the middle hole of the folding bracket and contacts the traction float. When the folding rod is in the folded state, the traction float is located at the tail end of the folding rod; a traction cable is fixed on the folding bracket for pulling the entire recovery device.

[0008] The folding bracket is provided with a power spring, a first fixed axis, a second fixed axis, a middle through hole and a first wiring hole.

[0009] One end of the power spring is connected to the second fixed shaft, and the other end is connected to the first fixed hole at the end of the folding rod. The first fixed shaft passes through the shaft hole of the folding rod to support the folding rod. The folding rod swings up and down around the first fixed shaft.

[0010] The middle through hole is located in the center of the folding bracket and is used to pass through the booster rod. First wiring holes are set on both sides of the middle through hole, and the traction cable is fixed to the folding bracket through the first wiring holes; a second fixing hole is set at the other end of the folding rod for connecting the ball collecting net. The outermost net wire of the ball collecting net is fixed on the second fixing holes at the ends of the six folding rods, and the center part of the ball collecting net is connected to the traction float.

[0011] Among them, the traction float is in a hemispherical shape, with a buoyancy chamber in the middle thereof, and a plurality of second wiring holes. A float groove is provided in the middle of the traction float, and the float groove is used to position and fix the end of the booster rod. There is a transition fit between the float groove and the booster rod, and an annular convex edge is provided on the edge of the traction float, and the annular convex edge is used to limit the automatic opening of the folding rod.

[0012] The traction float is made of ABS, nylon, aluminum alloy, and is machined or 3D printed. The volume of the buoyancy chamber is v 2 =m / ρ 1 -m / ρ 2 , ρ 1 is the density of the fluid medium, m is the structural mass, ρ 2 is the density of the traction float.

[0013] The beneficial effects of the technical solution provided by the present invention are:

[0014] 1. The present invention adopts an automatic folding mechanism, which can automatically adjust according to pipes of different diameters, effectively solving the problem of the recovery device in the prior art being limited by the pipe diameter, and greatly broadening the application scope of the recovery device;

[0015] 2. The present invention adopts a unique design to simplify the overall structure, making the overall structure of the device more reasonable and concise; whether it is the delivery or recovery process, the operation is more convenient, which significantly enhances the convenience of user operation and provides a more efficient and practical operation method for the recovery of the spherical pipeline detector;

[0016] 3. In the recycling process of the present invention, although the unfolded folding rod will be squeezed and shrunk when passing through the delivery tube, there is no risk of getting stuck, thus ensuring the smooth progress of the recycling process.

[0017] 4. The traction float designed in the present invention moves along the flow direction of the fluid under the action of the pipeline fluid, and can drive the ball collecting net attached thereto and the folding rod connected to the ball collecting net to bend and unfold in the direction of the flow velocity without other complex mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partial appearance diagram of a spherical pipeline detector recovery device;

[0019] Figure 2 A partial cross-sectional view of a folding bracket of a spherical pipeline detector recovery device;

[0020] Figure 3 It is a top view of a folding bracket portion of a spherical pipeline detector recovery device;

[0021] Figure 4 A schematic diagram of the unfolding of a folding rod of a spherical pipeline detector recovery device;

[0022] Figure 5 A schematic diagram of a traction float of a spherical pipeline detector recovery device;

[0023] Figure 6 A schematic diagram of the deployment process of a spherical pipeline detector recovery device;

[0024] Figure 7 This is a schematic diagram of the recovery process of a spherical pipeline detector recovery device.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1: Folding bracket; 10: Power spring; 11: First fixed axis; 12: Second fixed axis; 13: Middle through hole; 14: First wiring hole; 2: Folding rod; 20: First fixed hole; 21: Axis hole; 22: Second fixed hole; 3: Boosting rod; 30: Handrail; 4: Towing float; 40: Buoyancy chamber; 41: Second wiring hole; 42: Float groove; 43: Annular flange; 5: Towing cable; 6: Ball collecting net; 7: Pipeline; 8: Launching tube; 9: Spherical detector. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention are described in further detail below.

[0028] An embodiment of the present invention relates to a recovery device specifically used for recovering spherical detectors that perform detection tasks in fluid pipelines. In the prior art, the use of recovery devices is often limited by the diameter of the pipeline, and the emergence of the embodiment of the present invention effectively solves this problem. The core of the embodiment of the present invention lies in the automatic folding mechanism it adopts. Through this unique design, the recovery device can automatically adjust according to pipelines of different diameters, greatly broadening the scope of application of the recovery device. Not only that, this design also simplifies the overall structure. In practical applications, whether it is the placement or recovery process, the operation becomes more convenient, which significantly enhances the convenience of user operation and provides a more efficient and practical solution for the recovery of spherical pipeline detectors.

[0029] To achieve the above purpose, see Figures 1 to 7 The embodiment of the present invention provides a spherical pipeline detector recovery device (hereinafter referred to as the recovery device), which includes: a folding bracket 1, a folding rod 2, a booster rod 3, a traction float 4, a traction cable 5 and a ball collection net 6. The number of folding rods 2 is several, and in the embodiment of the present invention, six are preferably used. One end of the folding rod 2 is fixed to the folding bracket 1, and preferably a uniform distribution method (such as Figure 3 The traction float 4 is fixed on the ball collecting net 6 to pull the ball collecting net 6. The booster rod 3 passes through the middle hole of the folding bracket 1 and contacts the traction float 4. When the folding rod 2 is in the folded state, the traction float 4 is located at the tail end of the folding rod 2 (as shown in FIG. Figure 1 The traction cable 5 is used to pull the entire recovery device, and is fixed on the folding bracket 1. The folding bracket 1 mainly supports the folding rod 2. The folding rod 2 can be opened and closed relative to the folding bracket 1 (similar to the structure of an umbrella). When the folding rod 2 is opened, the ball collecting net 6 at the other end can be opened together.

[0030] like Figures 2 to 4As shown, the folding bracket 1 is provided with a power spring 10, a first fixed axis 11, a second fixed axis 12, a middle through hole 13 and a first wiring hole 14. One end of the power spring 10 is connected to the second fixed axis 12, and the other end is connected to the first fixed hole 20 at the end of the folding rod 2. Its main function is to provide the folding rod 2 with elastic force to fold it. The first fixed axis 11 passes through the axis hole 21 of the folding rod 2 to support the folding rod 2. Under the action of the power spring 10, the folding rod 2 can swing up and down around the first fixed axis 11. In the initial state, the folding rod 2 is in the maximum expansion state under the action of the power spring 10. The middle through hole 13 is located in the center of the folding bracket 1, and is used to pass the booster rod 3 ( Figure 1 First wiring holes 14 are provided on both sides of the middle through hole 13, and the traction cable 5 is fixed to the folding bracket 1 through the first wiring holes 14 ( Figure 4 As shown, the specific wire binding diagram is not shown in the figure, and the wire binding adopts a known conventional method by default). The other end of the folding rod 2 is provided with a second fixing hole 22 for connecting the ball collecting net 6. The ball collecting net 6 is in a shape similar to a spider web, and its outermost net wires are fixed on the second fixing holes 22 at the ends of the six folding rods 2, and the center of the ball collecting net 6 is connected to the traction float 4.

[0031] The traction float 4 is in the shape of a hemisphere, and a buoyancy chamber 40 (such as Figure 5 As shown), the buoyancy chamber 40 can ensure that the traction float 4 is in a suspended state in the pipeline medium, so that it can move freely under the impetus of the pipeline fluid.

[0032] The traction float 4 is also provided with a plurality of second wiring holes 41, which are used to bind the traction float 4 to the middle of the ball collecting net 6. In addition, a float groove 42 is provided in the middle of the traction float 4, which is used to position and fix the end of the booster rod 3. The float groove 42 and the booster rod 3 are transitionally matched to ensure that the booster rod 3 can be easily pulled out. An annular convex edge 43 (such as Figure 1 As shown in FIG. 1 , the annular convex edge 43 is used to limit the automatic opening of the folding rod 2. In actual operation, when the recovery device is not used or the recovery device is deployed, the folding rod 2 needs to be folded into the annular convex edge 43 of the traction float 4. In this way, even if the folding rod 2 is subjected to the force of the power spring 10, it will not automatically unfold. In particular, when the recovery device is deployed into the pipeline, the pipeline delivery port is often relatively narrow, and the folding rod 2 in the unfolded state is easily stuck, resulting in failure to deploy. Therefore, it is necessary to fold the folding rod 2 so that its outer size is smaller than the delivery port size.

[0033] The traction float 4 can be made of, but not limited to, ABS, nylon, aluminum alloy, etc., and can be machined or 3D printed. When designing the internal buoyancy chamber 40, the pipeline fluid medium density ρ should also be considered.1 and the structural mass m and the peripheral volume v 1 To make the buoyancy chamber 40 completely suspended in the medium, its weight must be equal to the buoyancy of the medium, and the equation ρ must be satisfied. 1 gv 1 = mg, where g is the acceleration due to gravity. In order to calculate the volume v of the buoyancy chamber 40 2 , it is necessary to determine the material and density of the traction float 4, assuming that the density is ρ 2 , then its volume is v 3 =m / ρ 2 , considering the peripheral volume v of the traction float 4 1 and buoyancy chamber 40 volume v 2 The difference is exactly equal to the actual volume v of the traction float 4 material 3 , so we have v 1 -v 2 =m / ρ 2 , combined with the previous buoyancy formula, the volume of the buoyancy chamber 40 is v 2 =m / ρ 1 -m / ρ 2 In actual design, 2 It can be made slightly larger than the calculated size, so that the overall buoyancy of the traction float 4 is greater than its gravity and it tends to float upward. However, in the pressure pipe, due to the pressure of the medium, the outer periphery of the traction float 4 shrinks and the volume becomes smaller, so the overall buoyancy becomes smaller and it tends to sink. Appropriately enlarge v 2 It can just offset the sinking tendency caused by this pressure.

[0034] Figure 6 and Figure 7 The use of the recovery device is specifically demonstrated. Figure 6 As shown in (a), the flow direction of the fluid medium in the pipeline 7 is shown by the arrow in the figure. In order to recover the spherical detector in the pipeline, a launching tube 8 for launching the recovery device is arranged above the pipeline, and the recovery device is lowered into the pipeline 7 through the launching tube 8. When launching, it is necessary to hold the handrail 30 at the end of the booster rod 3 and the traction cable 5 with your hands, and slowly lower them along the launching tube 8 (the schematic diagram of a person holding the handrail 30 is not drawn in the figure). When the traction float 4 is about to touch the bottom of the pipeline, one hand holds the traction cable 5, and the other hand presses down the booster rod 3 through the handrail 30. At this time, the traction float 4 will be pushed downward, and the folding bracket 1 and the folding rod 2 remain stationary under the action of the traction cable 5. The top of the folding rod 2 will separate from the annular flange 43 on the traction float 4, and begin to unfold under the action of the power spring 10 (as shown in the figure). Figure 6 (as shown in (b)).

[0035] At the same time, the traction float 4 separated from the folding rod 2 moves along the flow direction of the fluid under the action of the pipeline fluid, and at the same time pulls the ball collecting net 6 tied to it and the folding rod 2 connected to the ball collecting net 6 to bend in the flow direction. As the folding rod 2 unfolds, when the end of the folding rod 2 (where the ball collecting net 6 is tied) hits the pipe wall, the unfolding stops, and its unfolding size is just adapted to the pipe diameter (such as Figure 6 (c)). When a spherical detector 9 passes through the pipeline, it will be intercepted by the ball collecting net 6. When recovering, just slowly pull back the traction cable 5 to achieve the purpose of recovering the spherical detector 9. It should be noted that during the recovery process, the folding rod 2 in the unfolded state will be squeezed and shrunk to a size that fits the inner diameter of the delivery tube 8 when passing through the delivery tube 8. Unlike the delivery process, there is no risk of getting stuck at this time. Figure 7 shown.

[0036] The embodiment of the present invention adopts an automatic folding mechanism, which effectively solves the problem that the existing recovery device is limited by the pipe diameter, can be automatically adjusted according to different pipe diameters, and greatly broadens the scope of application; the unique design also simplifies the overall structure, making the device structure more reasonable and concise. In practical applications, the delivery and recovery operations are more convenient, which significantly enhances the convenience of user operation and provides an efficient and practical operation method for the recovery of spherical pipeline detectors. Under the action of the pipeline fluid, the designed traction float moves along the flow direction of the fluid, and the ball collection net and the folding rod connected to the ball collection net can be bent and unfolded in the direction of the flow rate without other complex mechanisms, further optimizing the recovery process. Moreover, during the recovery process, although the folding rod in the unfolded state will be squeezed and contracted when passing through the delivery tube, there is no risk of getting stuck, which effectively guarantees the smooth recovery process and provides a better solution for the recovery device to perform the spherical detector recovery task in the fluid pipeline.

[0037] Unless otherwise specified, the models of the components in the embodiments of the present invention are not limited, and any device that can perform the above functions may be used.

[0038] Those skilled in the art will appreciate that the accompanying drawing is only a schematic diagram of a preferred embodiment, and the serial numbers of the embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A spherical pipeline detector recovery device, characterized in that: The device comprises: a folding rod, One end of the folding rod is fixed on the folding bracket, and the other end is connected to the ball collecting net; a traction float is fixed on the ball collecting net; the booster rod passes through the middle hole of the folding bracket and contacts the traction float. When the folding rod is in the folded state, the traction float is located at the tail end of the folding rod; a traction cable is fixed on the folding bracket for pulling the entire recovery device.

2. A spherical pipeline detector recovery device according to claim 1, characterized in that: The folding bracket is provided with a power spring, a first fixed shaft, a second fixed shaft, a middle through hole and a first wiring hole. One end of the power spring is connected to the second fixed shaft, and the other end is connected to the first fixed hole at the end of the folding rod. The first fixed shaft passes through the shaft hole of the folding rod to support the folding rod. The folding rod swings up and down around the first fixed shaft. The middle through hole is located in the center of the folding bracket and is used to pass through the booster rod. First wiring holes are set on both sides of the middle through hole, and the traction cable is fixed to the folding bracket through the first wiring holes; a second fixing hole is set at the other end of the folding rod for connecting the ball collecting net. The outermost net wire of the ball collecting net is fixed on the second fixing holes at the ends of the six folding rods, and the center part of the ball collecting net is connected to the traction float.

3. A spherical pipeline detector recovery device according to claim 1, characterized in that: The traction float is in a hemispherical shape, with a buoyancy chamber in the middle thereof. The traction float is also provided with a plurality of second wiring holes. A float groove is provided in the middle of the traction float, and the float groove is used to position and fix the end of the booster rod. There is a transition fit between the float groove and the booster rod. An annular convex edge is provided on the edge of the traction float, and the annular convex edge is used to limit the automatic opening of the folding rod.

4. A spherical pipeline detector recovery device according to claim 1, characterized in that: The traction float is made of ABS, nylon, or aluminum alloy and is formed by machining or 3D printing.

5. The spherical pipeline detector recovery device according to claim 3, characterized in that: The volume of the buoyancy chamber is v2=m / ρ1-m / ρ2, ρ1 is the density of the fluid medium, m is the structural mass, and ρ2 is the density of the traction float.

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