Open-end water pressure test device for watertight cable detection

Abstract

The utility model discloses an open-end water pressure test device for watertight cable detection, which comprises a pressure source, a sealing test cavity, a control system and a data acquisition module, and is characterized in that a recovery disc at the top of the sealing cavity can collect water brought out in the exhaust process and guide the water into a water tank for cyclic utilization, so that water resource consumption is reduced; the filtering assembly continuously purifies a circulating medium, the pollution risk to the environment is reduced, the environment-friendly manufacturing concept is met, the whole device adopts modular design, all functional assemblies are reasonable in layout, and the occupied area is small; the control system is integrated on a PLC or a microprocessor, the operation interface is simple, the functions of one-key starting, automatic pressure maintaining, pressure relief and the like are supported, and the labor intensity of operators is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to an opening water pressure test device for testing watertight cables. Background Technology

[0002] In the field of cable water tightness testing, traditional initial hydrostatic testing devices suffer from the following technical bottlenecks:

[0003] 1. Existing devices mostly use fixed-specification sealing structures, which are difficult to quickly adapt to cables of different diameters or cross-sectional shapes. Frequent mold changes or complex processes such as glue injection and heat shrinking are required to achieve sealing, resulting in cumbersome operation and low efficiency.

[0004] 2. Some devices rely on gas cylinders or air compressors for direct gas supply, resulting in large pressure fluctuations. This makes it difficult to stably simulate high-pressure environments such as the deep sea, and the lack of a closed-loop feedback adjustment mechanism can easily lead to deviations in test data.

[0005] 3. The drainage system is not equipped with an effective filtration component. Impurities in the circulating water can easily clog pipes or valves, affecting the stability of the test. At the same time, the water carried out during the exhaust process is not recycled, resulting in a waste of resources.

[0006] 4. Traditional devices can only monitor pressure parameters and lack real-time detection of key indicators such as cable electrical performance (e.g., insulation resistance) and axial displacement, making it impossible to comprehensively assess the overall reliability of the cable under water pressure.

[0007] 5. Some devices are not equipped with pressure relief valves or displacement monitoring mechanisms, which may cause an explosion risk when the pressure is abnormal. In addition, the axial slippage of the cable under high pressure cannot be warned in time, which affects the safety of the test. Utility Model Content

[0008] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide an opening water pressure test device for testing watertight cables.

[0009] One of the objectives of this utility model is achieved through the following technical solution:

[0010] A water pressure testing device for testing the opening end of a watertight cable includes a pressure source, a sealed test chamber, a control system, and a data acquisition module. The pressure source is connected to the sealed test chamber to apply water pressure to the chamber. The sealed test chamber has a cable inlet for fixing the cable opening. The control system is connected to the pressure source and the data acquisition module to control the pressure application and record test data. A drain pipe is provided at the bottom of the sealed test chamber, and a drain valve is installed on the drain pipe. A filter assembly is provided between the drain pipe and the water tank. The filter assembly includes a filter cylinder, a rotating shaft, arc blades, a cleaning scraper, and a filter screen for filtering impurities in the circulating medium.

[0011] Furthermore, the sealing test chamber is made of corrosion-resistant material, and an adjustable sealing assembly is provided at the cable inlet. The sealing assembly includes a conical sealing plug and a rubber plug, and the sealing and fixing of cables of different specifications is achieved by squeezing the nut.

[0012] Furthermore, the pressure source is a hydraulic pump or a pneumatic pump, and is connected to the sealed test chamber through a water inlet pipe. A water inlet shut-off valve and a check valve are installed sequentially on the water inlet pipe to control the water flow direction and pressure.

[0013] Furthermore, the data acquisition module includes a pressure sensor and a temperature sensor, which monitor the pressure and temperature data inside the sealed test chamber in real time, and transmit the data to a remote host computer through a communication interface.

[0014] Furthermore, the control system is a programmable logic controller (PLC) or a microprocessor, with a preset pressure threshold. When an abnormal pressure is detected, an audible and visual alarm is issued through the alarm module.

[0015] Furthermore, the filter assembly has an inner partition and a water filter plate inside the filter cylinder. The inner partition and the inner wall of the filter cylinder form a material discharge chamber. The cleaning scraper is attached to the surface of the filter screen and is used to scrape off impurities and guide them to the collection rack in the material discharge chamber.

[0016] Furthermore, the top of the sealed test chamber is equipped with an exhaust valve and a recovery tray, which is connected to a water tank to collect the water carried out during the exhaust process and recycle it.

[0017] Furthermore, it also includes an insulation resistance tester, which is connected to the core wire of the cable to detect the electrical performance of the cable under water pressure in real time and store the test results in a data storage module.

[0018] Furthermore, a slip detection mechanism, including a detection baffle and a displacement detector, is provided on the outside of the sealed test chamber to monitor the axial displacement of the cable under pressure.

[0019] Furthermore, a proportional overflow valve and a pressure sensor are provided between the pressure source and the sealed test chamber, and the water pressure is precisely regulated and stably maintained through closed-loop control.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. The cable inlet adopts an adjustable conical sealing plug and rubber plug combination structure. By squeezing the nut, it can quickly seal and fix cables of different specifications without changing the mold or injecting glue, which greatly shortens the clamping time and avoids the problems of delamination or hot melt glue blockage that may be caused by traditional heat shrink sealing.

[0022] 2. The pressure source forms a closed-loop control system with the pressure sensor through the proportional relief valve, which can adjust the water pressure in real time and keep it stable, effectively simulating high-pressure environments such as the deep sea; the one-way valve and the inlet shut-off valve in the water inlet pipeline further ensure that the water flow direction is controllable and avoid pressure backflow from damaging the equipment.

[0023] 3. The filtration components in the drainage system adopt a filter cylinder structure with arc-shaped blades and cleaning scrapers. When water flows through, impurities are scraped off by the scrapers and collected in the material drop chamber. The filtered water flows back to the water tank for recycling through the filter plate, which not only prevents pipe blockage but also reduces water waste. The filter cylinder can be easily disassembled and cleaned, reducing maintenance costs.

[0024] 4. The data acquisition module integrates pressure sensors, temperature sensors, and insulation resistance testers to simultaneously monitor the pressure, temperature, and insulation performance of the cable core wires within the sealed cavity. The data is transmitted to a remote host computer via a communication interface, enabling digital management of the testing process. The slip detection mechanism monitors the axial displacement of the cable in real time. Combined with the pressure threshold preset by the control system, it can trigger audible and visual alarms in case of abnormalities, improving testing safety.

[0025] 5. The recovery tray at the top of the sealed chamber can collect the moisture carried out during the exhaust process and introduce it into the water tank for recycling, reducing water consumption; the continuous purification of the circulating medium by the filter components reduces the risk of environmental pollution and is in line with the concept of green manufacturing.

[0026] 6. The overall device adopts a modular design with a reasonable layout of functional components and a small footprint. The control system is integrated into a PLC or microprocessor with a simple operating interface. It supports one-button start, automatic pressure holding and pressure relief functions, which significantly reduces the labor intensity of operators.

[0027] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure in this embodiment;

[0029] Figure 2 This is a schematic diagram of the structure of the component sealing test chamber in this embodiment;

[0030] Figure 3 This is a schematic diagram of the component slip detection mechanism in this embodiment;

[0031] Figure 4 This is a schematic diagram of the component sealing assembly in this embodiment;

[0032] Figure 5 This is a schematic diagram of the cable inlet structure of the component in this embodiment;

[0033] Figure 6 This is a schematic diagram of the component filter assembly in this embodiment.

[0034] In the diagram: 1. Pressure source; 2. Sealing test chamber; 201. Cable inlet; 3. Control system; 4. Data acquisition module; 401. Pressure sensor; 402. Temperature sensor; 5. Cable; 6. Drain pipe; 601. Drain valve; 7. Water tank; 8. Filter assembly; 802. Filter cylinder; 806. Filter screen; 808. Filter plate; 9. Sealing assembly; 901. Conical sealing plug; 902. Rubber plug; 10. Inlet pipe; 1001. Inlet shut-off valve; 1002. Check valve; 12. Alarm module; 13. Exhaust valve; 14. Recovery tray; 16. Data storage module; 17. Slip detection mechanism; 1701. Detection baffle; 1702. Displacement detector; 18. Overflow valve. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0036] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] Please see Figures 1 to 6The water pressure testing device for the beginning of a watertight cable in this embodiment includes a pressure source 1, a sealed test chamber 2, a control system 3, and a data acquisition module 4. The pressure source 1 is connected to the sealed test chamber 2 to apply water pressure to the test chamber. The sealed test chamber 2 is provided with a cable inlet 201 for fixing the beginning of the cable 5. The control system 3 is connected to the pressure source 1 and the data acquisition module 4 to control the pressure application and record the test data. A drain pipe 6 is provided at the bottom of the sealed test chamber 2. A drain valve 601 is installed on the drain pipe 6, and a filter assembly 8 is provided between the drain pipe 6 and the water tank 7. The filter assembly 8 includes a filter cylinder 802, a rotating shaft, and arc-shaped blades. A cleaning scraper and filter screen 806 are used to filter impurities in the circulating medium. The sealing test chamber 2 is made of corrosion-resistant material. An adjustable sealing component 9 is provided at the cable inlet 201. The sealing component 9 includes a conical sealing plug 901 and a rubber plug 902. The sealing and fixing of cables 5 of different specifications are achieved by squeezing the nut. The pressure source 1 is a hydraulic pump or a pneumatic pump, which is connected to the sealing test chamber 2 through a water inlet pipe 10. A water inlet shut-off valve 1001 and a one-way valve 1002 are installed sequentially on the water inlet pipe 10 to control the water flow direction and pressure. The data acquisition module 4 includes a pressure sensor 401 and a temperature sensor 402. The pressure and temperature data inside the sealing test chamber 2 are monitored in real time and transmitted to a remote host computer via a communication interface. The control system 3 is a programmable logic controller (PLC) or microprocessor with a preset pressure threshold. When an abnormal pressure is detected, an audible and visual alarm is issued through the alarm module 12. The filter cylinder 802 of the filter assembly 8 is equipped with an inner partition and a water filter plate 808. A material discharge chamber is formed between the inner partition and the inner wall of the filter cylinder 802. A cleaning scraper adheres to the surface of the filter screen 806 to scrape off impurities and guide them to the collection rack in the material discharge chamber. The top of the sealing test chamber 2 is equipped with an exhaust valve 13 and a recovery tray 14. 14 is connected to water tank 7 to collect and recycle the water carried out during the exhaust process. It also includes an insulation resistance tester, which is connected to the core wire of cable 5 to detect the electrical performance of the cable under water pressure in real time and store the test results in data storage module 16. A sliding detection mechanism 17 is provided on the outside of the sealed test chamber 2, including a detection baffle 1701 and a displacement detector 1702, to monitor the axial displacement of cable 5 under pressure. A proportional overflow valve 18 and a pressure sensor 401 are provided between pressure source 1 and sealed test chamber 2 to achieve precise adjustment and stable maintenance of water pressure through closed-loop control.

[0039] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A water pressure testing device for testing watertight cables, comprising a pressure source (1), a sealed test chamber (2), a control system (3), and a data acquisition module (4), characterized in that: The pressure source (1) is connected to the sealed test chamber (2) to apply water pressure to the test chamber; the sealed test chamber (2) is provided with a cable inlet (201) to fix the opening of the cable (5); the control system (3) is connected to the pressure source (1) and the data acquisition module (4) to control the pressure application and record test data; the bottom of the sealed test chamber (2) is provided with a drain pipe (6), a drain valve (601) is installed on the drain pipe (6) and a filter assembly (8) is provided between the drain pipe (6) and the water tank (7); the filter assembly (8) includes a filter cylinder (802), a rotating shaft, an arc blade, a cleaning scraper and a filter screen (806) to filter impurities in the circulating medium.

2. The apparatus according to claim 1, characterized in that, The sealing test chamber (2) is made of corrosion-resistant material. An adjustable sealing component (9) is provided at the cable inlet (201). The sealing component (9) includes a conical sealing plug (901) and a rubber plug (902). The sealing and fixing of cables (5) of different specifications are achieved by squeezing the nut.

3. The apparatus according to claim 1, characterized in that, The pressure source (1) is a hydraulic pump or a pneumatic pump, and is connected to the sealing test chamber (2) through a water inlet pipe (10). A water inlet shut-off valve (1001) and a check valve (1002) are installed on the water inlet pipe (10) in sequence to control the water flow direction and pressure.

4. The apparatus according to claim 1, characterized in that, The data acquisition module (4) includes a pressure sensor (401) and a temperature sensor (402), which monitors the pressure and temperature data in the sealed test chamber (2) in real time and transmits the data to a remote host computer through a communication interface.

5. The apparatus according to claim 1, characterized in that, The control system (3) is a programmable logic controller (PLC) or a microprocessor, with a preset pressure threshold. When an abnormal pressure is detected, an audible and visual alarm is issued through the alarm module (12).

6. The apparatus according to claim 1, characterized in that, The filter assembly (8) has an inner partition and a filter plate (808) inside the filter cylinder (802). The inner partition and the inner wall of the filter cylinder (802) form a material discharge chamber. The cleaning scraper is attached to the surface of the filter screen (806) to scrape off impurities and guide them to the collection rack in the material discharge chamber.

7. The apparatus according to claim 1, characterized in that, The sealed test chamber (2) is equipped with an exhaust valve (13) and a recovery tray (14) at the top. The recovery tray (14) is connected to the water tank (7) and is used to collect the water carried out during the exhaust process and recycle it.

8. The apparatus according to claim 1, characterized in that, It also includes an insulation resistance tester, which is connected to the core wire of the cable (5) to detect the electrical performance of the cable under water pressure in real time and store the test results to the data storage module (16).

9. The apparatus according to claim 1, characterized in that, The outer side of the sealed test chamber (2) is provided with a sliding detection mechanism (17), including a detection baffle (1701) and a displacement detector (1702), which is used to monitor the axial displacement of the cable (5) under pressure.

10. The apparatus according to claim 1, characterized in that, A proportional overflow valve (18) and a pressure sensor (401) are provided between the pressure source (1) and the sealed test chamber (2), and the water pressure is precisely regulated and stably maintained through closed-loop control.

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