Heating and ventilation pipeline leakage detection device

Abstract

The utility model relates to the technical field of pipeline leakage detection, and discloses a heating and ventilation pipeline leakage detection device, which comprises a detection body and a detector capable of being used for detecting gas concentration, the detection body comprises a plurality of detection boxes, the detection boxes are of fan-shaped structures, detection cavities are arranged in the detection boxes, the detector is connected in the detection cavities, and the detection boxes are arranged in the detection cavities. The adjacent detection boxes can be in sealing fit with the outer wall of the pipeline through hinge assemblies, supporting rods are hinged to the two sides of each detection box respectively, the other ends of the supporting rods are rotationally connected with rolling wheels, and driving assemblies capable of driving the detection boxes not to abut against the outer wall of the pipeline are connected into the detection boxes. Compared with the prior art, the device has the advantages that leakage points can be conveniently and automatically collected, the detection efficiency is improved, the leakage points can be conveniently sealed, and the detection accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline leakage detection technology, specifically to a HVAC pipeline leakage detection device. Background Technology

[0002] Leaks are prone to occur at the joints of HVAC ducts. Existing HVAC duct leak detection devices detect leaks by using detectors and then transmit the collected data to a controller, which then transmits the detection data to the terminal equipment.

[0003] However, most existing HVAC duct leak detection devices rely on manually holding the sampling head for data collection. Since the end of the sampling head cannot seal the leak, the leaking gas diffuses with the flow of the environment, making it difficult to detect and locate the leak and resulting in inaccurate detection results. Utility Model Content

[0004] I. Technical problems to be solved

[0005] The technical problem this invention aims to solve is that manual data collection is inefficient, and the collection head cannot be sealed to the leak in the pipeline, making it difficult to detect and locate the leak and resulting in inaccurate detection results.

[0006] II. Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a HVAC duct leakage detection device, comprising a detection body and a detector for detecting gas concentration. The detection body includes several detection boxes, each detection box having a fan-shaped structure. Each detection box has a detection cavity, and the detector is connected and disposed within the detection cavity. Adjacent detection boxes are connected to each other via a hinge assembly to seal against the outer wall of the duct. Support rods are hinged to both sides of each detection box, and rollers are rotatably connected to the other end of each support rod. A drive assembly is connected inside the detection box to drive the detection box without it contacting the outer wall of the duct.

[0008] Furthermore, the hinge assembly includes hinge seats connected to both sides of the end of the test box, and hinge rods are respectively hinged between the hinge seats at an angle. The hinge rods are arranged crosswise in the middle and are hinged together by a hinge shaft. A torsion spring is provided at the hinge shaft. In the natural state, the hinge rods drive each test box to move closer to each other under the action of the torsion spring at the hinge shaft, so that the port of the test box can be sealed with the outer wall of the pipe.

[0009] Furthermore, the drive assembly includes a dual-head motor connected to the detection chamber. The power output ends of the dual-head motor are respectively connected to adjusting rods. The adjusting rods are threadedly connected to moving rods. The other end of the moving rod slides through the detection box and slides with the support rod at its end. By starting the dual-head motor, the dual-head motor drives the adjusting rods. The adjusting rods on both sides drive the moving rods on both sides to pass through the detection box and move closer to each other through the threaded engagement with the moving rod. The adjusting rod drives the support rod to rotate towards the detection box with the hinge point between it and the detection box as the center, thereby facilitating the support of the detection box. At this time, the torsion spring of the hinge shaft at the hinge rod is in a deformed and stored state.

[0010] Furthermore, the adjusting rods on both sides are threaded rods with opposite rotation directions, and the moving rod is internally connected with a threaded groove that mates with the adjusting rod.

[0011] Furthermore, the other end of the moving rod is provided with a lever, and a drive column is connected between the levers. A drive hole is opened on the support rod, and the drive hole is slidably engaged with the drive column. The arrangement of the lever, drive column and drive hole avoids interference between the moving rod and the support rod driving process.

[0012] Furthermore, a connecting plate is connected to one end of one of the support rods, and a drive motor is connected to the connecting plate. The power output end of the drive motor is connected to a roller shaft. When the roller abuts against the inner wall of the pipe, the drive motor drives one of the rollers to rotate, thereby causing the entire device to translate along the pipe axis.

[0013] III. Beneficial Effects

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] The drive assembly drives the rollers to no longer contact the outer wall of the pipe, and the hinge assembly drives each detection box to retract inward until the detection box is sealed to the outer wall of the pipe. The detector can be used to monitor the gas concentration in the detection chamber, thus facilitating the detection of whether there is a leak on the outer wall of the pipe. The drive assembly can also drive the detection box to not contact the outer wall of the pipe, thus facilitating the movement of the detection box along the pipe axis, making it convenient to detect other parts of the pipe. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a leak detection device for HVAC ducts according to this utility model. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of a leak detection device for HVAC ducts according to this utility model. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the main cross-sectional structure of a leak detection device for HVAC pipelines according to this utility model.

[0019] Figure 4 yes Figure 3 A magnified structural diagram of A in the diagram.

[0020] As shown in the figure: 1. Detector body, 2. Detector, 3. Detection box, 4. Detection cavity, 5. Support rod, 6. Roller, 7. Hinge rod, 8. Hinge shaft, 9. Dual-head motor, 10. Adjusting rod, 11. Moving rod, 12. Toggle rod, 13. Drive column, 14. Drive hole, 15. Drive motor. Detailed Implementation

[0021] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Combined with appendix Figure 1 , Figure 2 and Figure 3 A leak detection device for HVAC ducts includes a detection body 1 and a detector 2 for detecting gas concentration. The detection body 1 includes several detection boxes 3, each with a fan-shaped structure. Each detection box 3 has a detection cavity 4 with an inner opening. The detector 2 is connected to the detection cavity 4 and is electrically connected to an external controller. A sealing ring is connected to the opening end face of each detection cavity 4. Adjacent detection boxes 3 can be sealed to the outer wall of the duct through a hinge assembly. The hinge assembly includes hinge seats connected to both sides of the end of each detection box 3. Hinges 7 are respectively hinged between the hinge seats at an angle. The hinges 7 are crossed in the middle and hinged together by a hinge shaft 8. A torsion spring is provided at the hinge shaft 8.

[0024] The hinge assembly in the above structure drives each detection box 3 to retract inward, so that the port of the detection box 3 can be sealed with the outer wall of the pipeline. The detector 2 can be used to monitor the gas concentration in the detection chamber 4, thereby facilitating the detection of whether there is a leak on the outer wall of the pipeline, and the detection result is transmitted to the external terminal equipment through the controller.

[0025] Example 2

[0026] Based on Example 1, combined with Appendix Figure 3 and Figure 4The detection box 3 is hinged to two sides with support rods 5. The other end of the support rod 5 is rotatably connected to a roller 6. The detection box 3 is connected to a drive assembly that can drive the detection box 3 without abutting the outer wall of the pipe. The drive assembly includes a double-headed motor 9 connected to the detection chamber 4. The power output end of the double-headed motor 9 is connected to an adjusting rod 10. The adjusting rod 10 is threaded to a moving rod 11. The two adjusting rods 10 are threaded rods with opposite directions of rotation. The moving rod 11 is connected to a threaded groove that cooperates with the adjusting rod 10. The other end of the moving rod 11 slides through the detection box 3 and is slidably engaged with the support rod 5 at its end. The other end of the moving rod 11 is provided with a lever 12. A drive column 13 is connected between the levers 12. The support rod 5 is provided with a drive hole 14, which is slidably engaged with the drive column 13.

[0027] The drive component in the above structure can drive the detection box 3 to not contact the outer wall of the pipeline, thereby facilitating the movement of the detection box 3 along the pipeline axis and making it convenient to inspect other parts of the pipeline.

[0028] Combined with appendix Figure 2 One of the support rods 5 has a connecting plate at one end, and a drive motor 15 is connected to the connecting plate. The power output end of the drive motor 15 is connected to the shaft of the roller 6.

[0029] The combination of the drive motor 15 and the roller 6 in the above structure facilitates the driving of the device, enabling it to move along the pipeline axis.

[0030] The specific usage method is as follows:

[0031] The roller 6 is driven by the drive assembly to no longer abut against the outer wall of the pipe. The dual-head motor 9 drives the adjusting rod 10. The adjusting rods 10 on both sides drive the moving rods 11 through the threaded engagement with the moving rod 11 to move the moving rods 11 on both sides through the detection box 3 and move them away from each other, so that the roller 6 no longer abuts against the outer wall of the pipe. The detection box 3 is driven to retract inward by the hinge assembly. In the natural state, the hinge rod 7 drives the detection box 3 to move closer to each other under the action of the torsion spring at the hinge shaft 8, so that the port of the detection box 3 can be sealed with the outer wall of the pipe. The detector 2 can be used to monitor the gas concentration in the detection chamber 4, thereby facilitating the detection of whether there is a leak on the outer wall of the pipe.

[0032] The drive assembly allows the detection box 3 to move without contacting the outer wall of the pipe, facilitating its movement along the pipe axis and enabling inspection of other parts of the pipe. The dual-head motor 9 drives the adjusting rod 10, which, through threaded engagement with the moving rod 11, drives the moving rod 11 to pass through the detection box 3 and move closer together. The adjusting rod 10 drives the support rod 5 to rotate towards the detection box 3, centered on the hinge point, thus providing support for the detection box 3. At this time, the torsion spring of the hinge shaft 8 at the hinge rod 7 is in a deformed, stored state. The lever 12, drive column 13, and drive hole 14 prevent interference between the moving rod 11 and the support rod 5. When the roller 6 abuts against the inner wall of the pipe, the drive motor 15 drives one of the rollers 6 to rotate, causing the entire device to translate along the pipe axis.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0035] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A leak detection device for HVAC ducts, comprising a detection body (1) and a detector (2) for detecting gas concentration, characterized in that: The detection body (1) includes several detection boxes (3), each detection box (3) has a fan-shaped structure, and each detection box (3) has a detection cavity (4) inside. The detector (2) is connected and installed in the detection cavity (4). Adjacent detection boxes (3) can be sealed to the outer wall of the pipe through a hinge assembly. Each detection box (3) has a support rod (5) hinged to both sides, and a roller (6) is rotatably connected to the other end of the support rod (5). A drive assembly that can drive the detection box (3) to not abut against the outer wall of the pipe is connected inside the detection box (3).

2. The HVAC duct leakage detection device according to claim 1, characterized in that: The hinge assembly includes hinge seats connected to both sides of the end of the detection box (3), and hinge rods (7) are respectively hinged between the hinge seats at an angle. The hinge rods (7) are arranged crosswise in the middle and are hinged together by a hinge shaft (8). A torsion spring is provided at the hinge shaft (8).

3. The HVAC duct leakage detection device according to claim 1, characterized in that: The drive assembly includes a dual-head motor (9) connected to the detection chamber (4). The power output ends of the dual-head motor (9) are respectively connected to an adjustment rod (10). The adjustment rod (10) is connected to a moving rod (11) by a thread. The other end of the moving rod (11) slides through the detection box (3) and slides with the support rod (5) at its end.

4. The HVAC duct leakage detection device according to claim 3, characterized in that: The adjusting rods (10) on both sides are threaded rods with opposite directions of rotation, and the moving rod (11) is provided with a threaded groove that cooperates with the adjusting rod (10).

5. The HVAC duct leakage detection device according to claim 3, characterized in that: The other end of the moving rod (11) is provided with a lever (12), and a drive column (13) is connected between the levers (12). A drive hole (14) is opened on the support rod (5), and the drive hole (14) is slidably engaged with the drive column (13).

6. The HVAC duct leakage detection device according to claim 1, characterized in that: One of the support rods (5) has a connecting plate at one end, and a drive motor (15) is connected to the connecting plate. The power output end of the drive motor (15) is connected to the shaft of the roller (6).

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