A waterproof sealing tester for electrical conduit wall bushings

Abstract

This utility model discloses a waterproof sealing detector for electrical conduit wall bushings, including a housing, a pressure chamber housing, a flexible sealing element, a miniature air pump, an air inlet pipe, and a negative pressure gauge. The pressure chamber housing is fixedly installed on one side of the housing, and the flexible sealing element is fixedly adhered to the side of the pressure chamber housing away from the housing. The flexible sealing element is used to fit against the surface of the bushing to be tested to form a sealed space. The miniature air pump is fixedly installed inside the housing. One end of the air inlet pipe is connected to the air inlet of the miniature air pump, and the other end passes through the housing and extends to the inside of the pressure chamber housing, used to transport the gas in the pressure chamber housing to the miniature air pump. A negative pressure gauge is embedded in the top of the pressure chamber housing. This utility model can accurately detect leakage in electrical conduit wall bushings, especially to discover hidden hidden dangers, and avoid problems such as electrical short circuits and wall corrosion.

Description

Technical Field

[0001] This utility model relates to the field of waterproof sealing testing of conduit sleeves. More specifically, this utility model relates to a waterproof sealing tester for electrical conduit sleeves penetrating walls. Background Technology

[0002] In building construction, the wall sleeves for electrical conduits passing through basement exterior walls are crucial components for ensuring the sealing and waterproofing of conduits when they penetrate the wall. Their sealing performance directly affects the durability of the basement structure and the safe operation of electrical equipment. Because basement exterior walls are constantly exposed to a damp environment and are affected by factors such as soil pressure and temperature changes, the sealing points between the sleeve and the wall, and between the sleeve and the conduit, are prone to developing micro-cracks or loosening due to aging of the sealing material or construction defects. This can lead to groundwater seepage, causing electrical short circuits, wall corrosion, and other safety hazards.

[0003] In existing technologies, the waterproof sealing inspection of wall sleeves largely relies on manual visual inspection or observation after rain, that is, judging the sealing status by checking whether there are water stains or damp spots on the wall around the sleeve. This method has obvious limitations: on the one hand, it can only identify visible leaks that have already occurred, but cannot detect hidden defects such as micro-cracks, making it difficult to provide early warnings; on the other hand, it relies entirely on manual experience and lacks objective quantitative indicators, making it impossible to accurately assess the sealing quality (such as sealing pressure tolerance value, leakage rate, etc.), resulting in large differences in the judgment results of different inspectors and making it difficult to establish a unified quality standard.

[0004] Furthermore, traditional testing methods have blind spots in detecting concealed areas (such as deep within casings or inside walls) and cannot reproduce sealing performance under different water and air pressure environments, making it difficult to simulate leakage risks under actual basement service conditions. This qualitative and delayed testing mode not only increases subsequent maintenance costs but may also lead to serious safety accidents due to the failure to detect sealing failures in a timely manner. Utility Model Content

[0005] To achieve these objectives and other advantages according to this utility model, a preferred embodiment of this utility model provides a waterproof sealing tester for electrical conduit wall bushings, comprising a housing, a pressure chamber shell, a flexible sealing element, a miniature air pump, an air inlet pipe, and a negative pressure gauge; the pressure chamber shell is fixedly installed on one side of the housing, and the flexible sealing element is fixedly adhered to the side of the pressure chamber shell away from the housing, the flexible sealing element being used to fit against the surface of the bushing to be tested to form a sealed space; the miniature air pump is fixedly installed inside the housing, one end of the air inlet pipe is connected to the air inlet of the miniature air pump, and the other end passes through the housing and extends to the inside of the pressure chamber shell, for transporting gas from the pressure chamber shell to the miniature air pump; a negative pressure gauge is embedded in the top of the pressure chamber shell, the negative pressure gauge being used to detect the air pressure value inside the pressure chamber shell.

[0006] Preferably, it also includes an air outlet pipe, one end of which is connected to the air outlet of the micro air pump, and the other end extends through to the outside of the housing, for discharging the gas drawn by the micro air pump.

[0007] Preferably, a sealing ring is fixedly fitted onto the surface of the air intake pipe, and the sealing ring is embedded in the side of the housing near the pressure chamber shell and fixedly connected to the housing.

[0008] Preferably, an installation cavity is formed on the inner side of the housing, and heat dissipation holes are equally spaced on the rear side of the housing.

[0009] Preferably, a sealing connector is fixedly sleeved on the probe surface of the negative pressure gauge, and the sealing connector is embedded in the top of the pressure chamber shell and fixedly bonded to the pressure chamber shell.

[0010] Preferably, a relay is embedded in the top of the housing, and the battery is electrically connected to both the relay and the miniature air pump.

[0011] Preferably, a pull ring is provided on the rear side of the housing, and connecting rods are fixedly installed at both ends of the pull ring, with the end of the connecting rod away from the pull ring being fixedly connected to the housing.

[0012] Preferably, an edge arc-shaped component is fixedly installed on the outer side of the connecting rod, and a contact component is fixedly bonded to the side of the edge arc-shaped component away from the connecting rod. The edge arc-shaped component is used to increase the force-bearing area when the hand presses, and the contact component is used to improve the comfort when the hand presses.

[0013] This utility model has at least the following beneficial effects: (1) During use, the operator carries the detection device to the sleeve to be tested by pulling the ring. In order to accurately detect the potential local leakage in the large-area sealing structure, the flexible seal needs to be attached to the position to be tested. The flexible seal and the pressure chamber shell adopt an arc design, which can make close contact with the gap between the large-diameter sleeve and the pipeline. At the same time, the large-diameter sleeve is divided into multiple sections for testing. After the leak is detected, small-scale maintenance and remediation can be carried out, providing more accurate leak detection and reducing the maintenance and remediation cost of the leak point. (2) During use, the operator gently presses the housing with the edge arc-shaped piece to make the pressure chamber housing push the flexible seal to fit tightly against the detection surface; then the micro air pump is started by the relay. When the micro air pump is running, it draws gas from the inside of the pressure chamber housing through the air inlet pipe and then discharges the drawn gas through the air outlet pipe. As the micro air pump continues to draw gas, its pumping volume can be displayed visually by the negative pressure gauge; (3) When the detection area is properly sealed, the pressure chamber shell will form a stable adsorption with the detection area through the flexible seal under the extraction action. This design is different from the passive approach of the existing technology that requires waiting for rainwater to penetrate before taking remedial measures. This sealing detection device has a simple structure and low operating cost, and can play a proactive role in the field of casing waterproofing, and detect potential sealing hazards in advance.

[0014] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the waterproof sealing tester for electrical conduit wall sleeves of this utility model; Figure 2 This is an exploded view of the pressure chamber shell and the flexible seal in this utility model; Figure 3 This is an enlarged cross-sectional view of the shell in this utility model; Figure 4 This is an exploded cross-sectional view of the shell in this utility model; Figure 5 This is an enlarged schematic diagram of the pull ring and the edge arc-shaped component in this utility model; Figure 6 This is an exploded and enlarged schematic diagram of the pull ring and the edge arc-shaped component in this utility model. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0018] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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 element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation of this utility model.

[0019] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0020] like Figure 1-6 As shown, a preferred embodiment of this utility model provides a waterproof sealing tester for electrical conduit wall sleeves, including a housing 1, a pressure chamber housing 2, a flexible sealing element 201, a micro air pump 3, an air inlet pipe 301, and a negative pressure gauge 5; A pressure chamber shell 2 is fixedly installed on one side of the housing 1. A flexible sealing element 201 is fixedly adhered to the side of the pressure chamber shell 2 away from the housing 1. The flexible sealing element 201 is used to fit against the surface of the sleeve to be tested to form a sealed space. A miniature air pump 3 is fixedly installed inside the housing 1. One end of the air inlet pipe 301 is connected to the air inlet of the miniature air pump 3, and the other end passes through the housing 1 and extends to the inside of the pressure chamber shell 2, which is used to transport the gas in the pressure chamber shell 2 to the miniature air pump 3. A negative pressure gauge 5 is embedded in the top of the pressure chamber shell 2. The negative pressure gauge 5 is used to detect the air pressure value in the pressure chamber shell 2.

[0021] In actual testing, the micro air pump 3 is started. After the micro air pump 3 starts running, it draws gas from the pressure chamber shell 2 through the air inlet pipe 301. The amount of gas in the pressure chamber shell 2 gradually decreases, and the air pressure decreases accordingly. During this process, the operator judges the sealing condition of the sleeve by observing the changes in the reading of the negative pressure gauge 5: if there is a leak in the sleeve to be tested, external air will enter the pressure chamber shell 2 through the leak point, causing the air pressure in the pressure chamber shell 2 to drop slowly, and the reading of the negative pressure gauge 5 to increase slowly or remain stable, which is inconsistent with the air pressure change pattern when the micro air pump 3 is normally drawing gas; if the sleeve to be tested is well sealed, the gas in the pressure chamber shell 2 is continuously drawn, the air pressure drops steadily, and the reading of the negative pressure gauge 5 will continue to decrease as the drawing time progresses until a stable negative pressure state is reached.

[0022] In another technical solution, the waterproof sealing tester for electrical conduit wall sleeves also includes an air outlet pipe 302, one end of which is connected to the air outlet of the micro air pump 3, and the other end extends through to the outside of the housing 1, for discharging the gas drawn by the micro air pump 3.

[0023] During equipment operation, the miniature air pump 3 draws gas from the pressure chamber shell 2 through the air inlet pipe 301. The gas enters the miniature air pump 3, is pressurized by the miniature air pump 3, and is discharged from the air outlet to the air outlet pipe 302, and then transported to the outside of the shell 1 through the air outlet pipe 302. The setting of the air outlet pipe 302 enables the miniature air pump 3 to form a complete gas flow circuit, avoiding the accumulation of drawn gas inside the shell 1. If the air outlet pipe 302 is not present, the drawn gas cannot be discharged, which will cause the air pressure inside the shell 1 to rise. On the one hand, this will hinder the normal gas drawing of the miniature air pump 3 and reduce the air pressure regulation efficiency. On the other hand, it may also cause pressure effects on the miniature air pump 3 inside the shell 1 and the electrical components installed later, shortening the service life of the components.

[0024] In another technical solution, a sealing ring 4 is fixedly sleeved on the surface of the air intake pipe 301. The sealing ring 4 is embedded in the side of the housing 1 near the pressure chamber housing 2 and is fixedly connected to the housing 1.

[0025] In the above technical solution, the sealing ring 4, through its own elastic deformation, tightly fits the surface of the air inlet pipe 301 and the inner wall of the through hole, completely blocking the passage for external air to enter the pressure chamber shell 2, ensuring that the air pressure change in the pressure chamber shell 2 is determined only by the sealing state of the sleeve to be tested.

[0026] In another technical solution, an installation cavity 401 is formed on the inner side of the housing 1, and heat dissipation holes 402 are equally spaced on the rear side of the housing 1.

[0027] During operation, the miniature air pump 3 generates heat, which gradually accumulates in the mounting cavity 401, causing the internal temperature of the housing 1 to rise. Excessive temperature can lead to a decrease in the motor speed of the miniature air pump 3, reducing gas extraction efficiency and potentially burning out the motor coils. The presence of the heat dissipation holes 402 creates an airflow channel between the inside and outside of the housing 1: cooler external air enters the mounting cavity 401 through some of the heat dissipation holes 402, mixes with the warmer air, and is then exhausted to the outside of the housing 1 through the remaining holes 402, forming a natural ventilation circulation that continuously removes heat from the mounting cavity 401, maintaining the internal temperature of the housing 1 within the normal operating temperature range of the miniature air pump 3 (typically -10℃ to 40℃). Because the heat dissipation holes 402 are evenly spaced, air can circulate smoothly in all areas of the mounting cavity 401, preventing localized overheating and component damage.

[0028] In another technical solution, a sealing connector 501 is fixedly sleeved on the probe surface of the negative pressure gauge 5, and the sealing connector 501 is embedded in the top of the pressure chamber shell 2 and is fixedly bonded to the pressure chamber shell 2.

[0029] During equipment testing, the sealing connector 501 fits tightly against the probe and the inner wall of the mounting hole through its own elasticity, completely blocking the gas leakage channel and ensuring that the air pressure in the pressure chamber shell 2 can be accurately transmitted to the probe, so that the reading of the negative pressure gauge 5 truly reflects the air pressure status in the pressure chamber shell 2.

[0030] In another technical solution, a relay 6 is embedded in the top of the housing 1, and the battery 9 is electrically connected to the relay 6 and the miniature air pump 3 respectively.

[0031] Battery 9 provides power to the entire electrical system, enabling the equipment to operate without an external power source, making it suitable for construction sites where no external power supply is available. When battery 9 is low on power, it can be charged via a dedicated charger connected to the charging interface to ensure continuous operation of the equipment.

[0032] In another technical solution, a pull ring 7 is provided on the rear side of the housing 1, and a connecting rod 701 is fixedly installed at both ends of the pull ring 7. The end of the connecting rod 701 away from the pull ring 7 is fixedly connected to the housing 1.

[0033] When carrying the equipment, the operator inserts their hand into the pull ring 7, grasps the pull ring 7, and lifts the equipment. The pull ring 7 bears the weight of the equipment and transfers the weight to the housing 1 through the connecting rod 701, allowing the equipment to be stably suspended in the hand. Because the pull ring 7 maintains an appropriate distance from the housing 1, the operator's hand will not rub against the surface of the housing 1 or the heat dissipation holes 402, improving carrying comfort.

[0034] In another technical solution, an edge arc-shaped component 8 is fixedly installed on the outer side of the connecting rod 701, and a contact component 801 is fixedly bonded to the side of the edge arc-shaped component 8 away from the connecting rod 701. The edge arc-shaped component 8 is used to increase the force-bearing area when the hand presses, and the contact component 801 is used to improve the comfort when the hand presses.

[0035] By installing an edge arc-shaped part 8 on the outside of the connecting rod 701 and attaching a contact part 801 to the edge arc-shaped part 8, the force-bearing area when the hand presses the device is effectively increased, the pressure per unit area of ​​the hand is reduced, and the softness of the contact part 801 improves the pressing comfort, reduces hand fatigue caused by long-term operation, and improves the user experience of the operator.

[0036] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A waterproof sealing tester for electrical conduit wall bushings, characterized in that, The device includes a housing, a pressure chamber shell, a flexible seal, a miniature air pump, an air inlet pipe, and a negative pressure gauge. The pressure chamber shell is fixedly installed on one side of the housing, and the flexible seal is fixedly adhered to the side of the pressure chamber shell away from the housing. The flexible seal is used to fit against the surface of the sleeve to be tested to form a sealed space. The miniature air pump is fixedly installed inside the housing. One end of the air inlet pipe is connected to the air inlet of the miniature air pump, and the other end passes through the housing and extends to the inside of the pressure chamber shell, used to transport the gas in the pressure chamber shell to the miniature air pump. A negative pressure gauge is embedded in the top of the pressure chamber shell, used to detect the air pressure value inside the pressure chamber shell.

2. The electrical conduit and penetration seal tester of claim 1, wherein, It also includes an air outlet pipe, one end of which is connected to the air outlet of the micro air pump, and the other end extends through to the outside of the housing, for discharging the gas drawn by the micro air pump.

3. The electrical conduit and penetration seal tester of claim 2, wherein, A sealing ring is fixedly fitted onto the surface of the air intake pipe. The sealing ring is embedded in the housing on the side near the pressure chamber shell and is fixedly connected to the housing.

4. The electrical conduit and penetrations waterproof seal detector according to claim 1, wherein, An installation cavity is formed on the inner side of the housing, and heat dissipation holes are equally spaced on the rear side of the housing.

5. The electrical conduit and penetrations waterproof seal detector according to claim 1, wherein, The probe surface of the negative pressure gauge is fixedly fitted with a sealing connector, which is embedded in the top of the pressure chamber shell and is fixedly bonded to the pressure chamber shell.

6. The electrical conduit and penetrations waterproof seal detector according to claim 1, wherein, A relay is embedded in the top of the housing, and the battery is electrically connected to both the relay and the miniature air pump.

7. The electrical conduit and penetrations waterproof seal detector according to claim 1, wherein, A pull ring is provided on the rear side of the housing, and connecting rods are fixedly installed at both ends of the pull ring. The end of the connecting rod away from the pull ring is fixedly connected to the housing.

8. The electrical conduit and penetration seal tester of claim 7, wherein, An edge arc-shaped component is fixedly installed on the outer side of the connecting rod. A contact component is fixedly bonded to the side of the edge arc-shaped component away from the connecting rod. The edge arc-shaped component is used to increase the force-bearing area when the hand presses, and the contact component is used to improve the comfort when the hand presses.

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