Pipeline water leakage identification alarm device

Abstract

The utility model relates to an alarm device, in particular to a pipeline water leakage identification alarm device which comprises a sleeve, a water containing cavity is formed at the lower end of the sleeve, and a trigger device and an alarm device are fixedly arranged at the bottom of the water containing cavity. The trigger device comprises a trigger box with a hole structure in the side wall, a floating block is slidably arranged in the trigger box, the height of the floating block is far smaller than that of the side wall of the trigger box, and a first conductive block is fixedly arranged at the top of the floating block; the alarm device is fixedly arranged at the top of the trigger box and comprises a shell and an alarm circuit located in the shell, a second conductive block is fixedly arranged at the bottom of the shell, and when the first conductive block makes contact with the second conductive block, the alarm circuit is conducted and works. According to the utility model, the misjudgment of water leakage caused by little dripping of water vapor on the outer wall of the pipeline is avoided, the water leakage identification precision is improved, and the device can be directly and repeatedly used, is convenient to disassemble and assemble, is suitable for identifying the water leakage of the pipeline, and can be adapted to pipelines with different pipe diameters within a certain range.

Description

Technical Field

[0001] This utility model relates to an alarm device, specifically a pipe leakage detection alarm device. Background Technology

[0002] During the actual use of water supply pipelines, due to multiple factors such as water erosion, pipe aging, and changes in the external environment, the connection between two pipes often becomes the weakest link in the entire water supply system, making it highly susceptible to leakage. This type of leakage mostly manifests as dripping, with water droplets falling infrequently, and the leak location may be quite hidden, making it difficult to detect immediately. However, over time, prolonged dripping leads to water loss. Simultaneously, the continuously seeping water will gradually penetrate into the building structure, causing erosion of walls and floors, ultimately threatening the overall safety and stability of the building.

[0003] Chinese utility model patent CN220038209U discloses a leak detection and alarm device. The device is fitted onto the connection point of two pipes using a ring-shaped fastener. A humidity sensor is installed inside the ring-shaped fastener. When a leak is detected, the control system triggers a ring to sound, thus detecting and alarming the leak. However, under conditions of large temperature differences, water vapor condenses near the pipes, forming water droplets that adhere to the pipe walls, increasing the humidity inside the ring-shaped fastener. If even a small amount of water droplets falls, it can trigger the humidity sensor, leading to false leak detection and reducing the device's accuracy. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention aims to provide a pipe leak detection and alarm device to avoid false alarms caused by small amounts of water droplets, thereby improving the accuracy of leak detection.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a pipe leakage detection and alarm device, including a sleeve for being fitted onto the pipe connection, a water-containing cavity formed at the lower end of the sleeve for accommodating leakage, a triggering device for detecting leakage fixed at the bottom of the water-containing cavity, and an alarm device for alarm.

[0006] The triggering device includes a trigger box with a hole structure on the side wall, a floating block is slidably disposed in the trigger box along the height direction, the height of the floating block is much smaller than the height of the side wall of the trigger box, and a first conductive block is fixed on the top of the floating block;

[0007] The alarm device is fixed on the top of the trigger box and includes a housing and an alarm circuit located inside the housing. A second conductive block is fixed at the bottom of the housing and extends through to the top of the trigger box. When the first conductive block contacts the second conductive block, the alarm circuit is turned on and operates.

[0008] As a limitation of this utility model: the side walls of the trigger box are provided with a pair of guide holes along the height direction, and the side walls of the float block are provided with guide protrusions that are adapted to the guide holes.

[0009] As a limitation of this utility model: the cross-section of the trigger box is rectangular, and the guide through holes are opened on two opposite side walls of the trigger box, and at least two guide through holes are opened on each side wall.

[0010] As a limitation of this utility model: the second conductive block has two spaced-apart parts, and the size of the first conductive block is larger than the distance between the two second conductive blocks, so that when the first conductive block and the second conductive block are in contact, the two second conductive blocks are connected.

[0011] As a limitation of this utility model, the shell is a sealed shell.

[0012] As a limitation of this utility model: the water-containing cavity is arranged along the length direction of the sleeve, and the bottom surface of the water-containing cavity is arc-shaped.

[0013] As a limitation of this utility model, a counterweight is fixedly provided at the bottom of the water-containing cavity.

[0014] As a limitation of this utility model: the sleeve includes a bottom half-tube with a semi-circular structure and a water-containing cavity, and a top half-tube with a semi-circular structure that is hinged and fastened to the bottom half-tube.

[0015] As a limitation of this utility model: both ends of the inner wall of the sleeve along the length direction are provided with arc-shaped clamping plates arranged in an annular array, and a compression spring is fixed between the clamping plates and the inner wall of the sleeve.

[0016] As a limitation of this utility model: the connection between the top half-tube and the bottom half-tube is detachably connected by quick-release bolts.

[0017] By adopting the above technical solution, the beneficial effects achieved by this utility model compared with the prior art are as follows:

[0018] (1) This utility model uses a sleeve to connect pipes that are prone to leakage. A triggering device and an alarm device are also installed in the water-containing cavity. The triggering device is triggered by floating away from the trigger. In this way, the alarm device will only be triggered when the leakage occurs and the leakage water in the water-containing cavity accumulates and reaches a certain height. This avoids the misjudgment of leakage caused by a small amount of water vapor dripping from the outer wall of the pipe, and improves the accuracy of leakage identification. Furthermore, after the staff discovers the alarm and pours out the leakage water, this device can be reused multiple times, which reduces the cost.

[0019] (2) The bottom surface of the water-containing cavity of this utility model is arc-shaped, which ensures that all the leaked water enters the water-containing cavity and is located at the bottom of the water-containing cavity. A counterweight is set at the bottom of the water-containing cavity so that the trigger box is always located at the lowest point inside the water-containing cavity, which further ensures the accurate triggering of the triggering device.

[0020] (3) The sleeve of this utility model includes two half-pipes, which are installed by snapping together and are equipped with quick-release bolts at the connection, making disassembly and assembly convenient; furthermore, since a clamping plate is provided on the inner wall of the pipe, this device can adapt to pipes of different diameters within a certain range.

[0021] In summary, this invention avoids misjudging leaks caused by small amounts of water vapor dripping from the outer wall of the pipe, improves the accuracy of leak identification, can be reused multiple times, is easy to disassemble and assemble, is suitable for identifying pipe leaks, and can be adapted to pipes of different diameters within a certain range. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the bottom half-tube structure in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the triggering device and alarm device in the embodiments of this utility model;

[0026] Figure 4 This is a perspective view of the floating block in an embodiment of the present invention.

[0027] In the diagram: 1-bottom half-pipe, 2-top half-pipe, 3-quick release bolt, 31-screw, 32-tightening sleeve, 4-clamping plate, 5-compression spring, 6-water chamber, 7-counterweight, 8-trigger box, 9-floating block, 10-guide hole, 11-guide protrusion, 12-shell, 13-second conductive block, 14-first conductive block. Detailed Implementation

[0028] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. It should be understood that the pipe leakage detection and alarm device described herein is a preferred embodiment and is only used for illustration and explanation of this utility model, and does not constitute a limitation thereof.

[0029] The directional terms or positional relationships used in this utility model, such as "up," "down," "left," and "right," are based on the positional relationships in the accompanying drawings of this utility model. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component must have a specific orientation, or that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the content protected by this utility model.

[0030] This implementation example Figures 1-4 As shown, a pipe leakage detection and alarm device includes a sleeve for fitting onto the pipe connection, a water-receiving cavity 6 formed at the lower end of the sleeve for accommodating leakage, a triggering device for detecting leakage fixed at the bottom of the water-receiving cavity 6, and an alarm device for alarming.

[0031] (a) Casing

[0032] like Figure 1 As shown, the sleeve includes a bottom half-pipe 1 with a semi-circular structure and a water-containing cavity 6, and a top half-pipe 2 with a semi-circular structure. The top half-pipe 2 is installed on the sleeve by a hinge. Specifically, one end of the bottom half-pipe 1 and the top half-pipe 2 are hinged to each other, and the other end, i.e., the connection point, is integrally provided with an outwardly extending horizontal plate. The two horizontal plates are detachably connected by quick-release bolts 3. In this embodiment, the horizontal plate is provided with three grooves. The quick-release bolt 3 includes a screw 4 hinged in the groove of the bottom half-pipe 1, and a screw sleeve 5 threaded on the screw 4. When the top half-pipe 2 needs to be fastened, the screw 4 is rotated to an upward upright position, and the screw sleeve 5 is rotated downward until the bottom of the screw sleeve 5 presses against the horizontal plate of the top half-pipe 2 to complete the fixation. When the fixation needs to be released, the screw sleeve 5 is rotated upward until it leaves the horizontal plate, and the screw 4 is rotated downward to release the fixation, which is convenient and quick. Of course, the connection between the bottom half-pipe 1 and the top half-pipe 2 can also be fixed using other structures in the prior art, such as bolts and nuts that pass through the horizontal plate.

[0033] The inner wall of the sleeve is provided with arc-shaped clamping plates 4 arranged in a ring at both ends along the length direction. In this embodiment, there are three clamping plates 4 at each end of the inner wall of the sleeve along the length direction, and the included angle between two adjacent clamping plates 4 is 120°. A compression spring 5 is fixed between the clamping plate 4 and the inner wall of the sleeve, which allows the sleeve to be fitted onto pipes of different diameters within a certain range. The number of clamping plates 4 and compression springs 5 ​​can be adjusted adaptively as needed.

[0034] (ii) Water-receiving cavity 6

[0035] like Figure 2As shown, the water-receiving cavity 6 is located at the center of the bottom of the bottom half-pipe 1 and communicates with it. In this embodiment, the water-receiving cavity 6 is arranged along the length of the sleeve, so that the length of the water-receiving cavity 6 can completely cover the easily leaking pipe connection, ensuring that all leaks drip into the water-receiving cavity 6. The bottom surface of the water-receiving cavity 6 is arc-shaped, and the longitudinal section of the water-receiving cavity 6 includes the arc-shaped bottom and a side wall tangent to the bottom half-pipe 1. At the bottom of the water-receiving cavity 6, counterweights 7 of the same weight are fixed at both ends along the length direction. In this embodiment, the bottom of the counterweights 7 is arc-shaped to match the bottom of the water-receiving cavity 6. The shape of the counterweights 7 is symmetrical along the axial axis of the bottom half-pipe 1, and the two counterweights 7 are symmetrically arranged along the radial axis of the bottom half-pipe 1. The arrangement of the counterweights 7 further ensures that the triggering device is located horizontally at the lowest surface of the bottom half-pipe 1.

[0036] (iii) Triggering device

[0037] like Figure 2 , Figure 3 As shown, the triggering device is fixed at the center of the bottom of the water-containing cavity 6, and includes a trigger box 8 with perforated sidewalls. A floating block 9 is slidably disposed in the trigger box 8 along the height direction. Specifically, in this embodiment, the trigger box 8 is a rectangular box without a top surface. The lower part of the trigger box 8 is an arc shape adapted to the water-containing cavity 6. Pairs of guide holes 10 are provided on two opposite sidewalls of the trigger box 8 along the length of the bottom half-pipe 1, which are arranged along the height direction. Here, "paired" means that the number of guide holes 10 is the same and their positions are corresponding. In this embodiment, three guide holes 10 are provided on each corresponding sidewall. Figure 3 , Figure 4 As shown, the floating block 9 in this embodiment is a hollow, plate-shaped plastic block that can float on the water surface and has significant buoyancy. The height of the floating block 9 is much smaller than the height of the side wall of the trigger box 8. Guide protrusions 11, adapted to the guide holes 10, are provided on the side wall of the floating block 9. In this embodiment, three guide protrusions 11 are also provided on the corresponding side wall of the floating block 9, allowing the floating block 9 to slide along the trigger box 8 in terms of height. When there is no leakage at the bottom of the water-containing cavity 6, the floating block 9 is located at the bottom of the trigger box 8. When water from the pipe gradually drips into the water-containing cavity 6, the floating block 9 will rise as the water level in the water-containing cavity 6 increases. In other embodiments, the location and number of guide holes 10 can be adjusted, and the material of the floating block 9 can also be adjusted, as long as it can float on the water surface and have significant buoyancy.

[0038] (iv) Alarm device

[0039] like Figure 2 , Figure 3As shown, the alarm device is fixed to the top of the trigger box 8, including a housing 12 and an alarm circuit (not shown in the figure) located inside the housing 12. In this embodiment, the housing 12 is a sealed box with the same cross-sectional area as the trigger box 8. A second conductive block 13 is fixed to the bottom of the housing 12, extending through to the top of the trigger box 8. There are two second conductive blocks 13 spaced apart, and the lower end face of the second conductive block 13 is arc-shaped. The alarm circuit inside the housing 12 includes a buzzer alarm. In this embodiment, the buzzer alarm is an active buzzer, and its two contacts are respectively connected to the second conductive block 13 and the second conductive block 13. Figure 4 As shown, a first conductive block 14 is fixed on the top of the float block 9. The upper surface of the first conductive block 14 is arc-shaped, and the size of the first conductive block 14 is larger than the distance between the two second conductive blocks 13. When the leaking water from the pipe gradually drips into the water-containing cavity 6, the float block 9 will rise with the rise of the water level in the water-containing cavity 6. When the leaking water reaches a certain amount, the float block 9 rises to the top of the trigger box 8, so that the first conductive block 14 contacts the second conductive block 13. At this time, the two second conductive blocks 13 are connected, the alarm circuit is activated, and the buzzer in it works to remind personnel to pay attention to the leak at the pipe connection.

Claims

1. A pipe leakage detection and alarm device, characterized in that: It includes a sleeve for fitting at the pipe connection, the lower end of the sleeve forming a water-receiving cavity for accommodating leaks, a triggering device for detecting leaks fixed at the bottom of the water-receiving cavity, and an alarm device for alarming. The triggering device includes a trigger box with a hole structure on the side wall, a floating block is slidably disposed in the trigger box along the height direction, the height of the floating block is much smaller than the height of the side wall of the trigger box, and a first conductive block is fixed on the top of the floating block; The alarm device is fixed on the top of the trigger box and includes a housing and an alarm circuit located inside the housing. A second conductive block is fixed at the bottom of the housing and extends through to the top of the trigger box. When the first conductive block contacts the second conductive block, the alarm circuit is turned on and operates.

2. The pipeline leakage detection and alarm device according to claim 1, characterized in that: The trigger box has a pair of guide holes along the height direction on opposite side walls, and the float block has guide protrusions that match the guide holes on its side walls.

3. The pipeline leakage detection and alarm device according to claim 2, characterized in that: The trigger box has a rectangular cross-section, and guide holes are opened on two opposite side walls of the trigger box, with at least two guide holes on each side wall.

4. The pipeline leakage detection and alarm device according to claim 1, characterized in that: The second conductive block has two spaced-apart components. The size of the first conductive block is larger than the distance between the two second conductive blocks, so that when the first conductive block comes into contact with the second conductive block, the two second conductive blocks are connected.

5. The pipeline leakage detection and alarm device according to claim 4, characterized in that: The casing is a sealed shell.

6. The pipeline leakage detection and alarm device according to claim 1, characterized in that: The water-receiving cavity is set along the length of the sleeve, and the bottom surface of the water-receiving cavity is arc-shaped.

7. The pipeline leakage detection and alarm device according to claim 6, characterized in that: A counterweight is fixed at the bottom of the water-containing cavity.

8. The pipeline leakage detection and alarm device according to any one of claims 1 to 7, characterized in that: The sleeve includes a bottom half-pipe with a semi-circular structure and a water-containing cavity, and a top half-pipe with a semi-circular structure that is hinged to the bottom half-pipe.

9. The pipeline leakage detection and alarm device according to claim 8, characterized in that: Both ends of the inner wall of the casing along the length direction are provided with arc-shaped clamping plates arranged in a ring, and a compression spring is fixed between the clamping plates and the inner wall of the casing.

10. The pipeline leakage detection and alarm device according to claim 9, characterized in that: The top half-pipe and the bottom half-pipe are detachably connected by quick-release bolts.

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