Waterproof structure of valve pit monitor without airtight detection port

Abstract

The utility model relates to a waterproof structure of a valve pit monitor without an airtight detection port. A pressure sensor, a mainboard glue filling box, a battery glue filling box and an antenna anti-rotation support are arranged in the protective shell body, a laser ranging base is arranged on the top of the outer side of the protective shell body, a laser ranging sensor is arranged on the laser ranging base, and a sensor decorative cover is arranged on the outer side of the laser ranging sensor; a laser methane sensor and a liquid level floating ball sensor are arranged at the bottom of the outer side of the protective shell body, and a rod-shaped antenna is arranged on the right portion of the outer side of the protective shell body. According to the utility model, a detection port is canceled, air tightness monitoring is realized through the built-in pressure sensor, and the equipment design is simplified; multiple waterproof structures such as silica gel gasket sealing, O-shaped ring sealing and thread glue sealing are adopted, so that the waterproof performance of the equipment is greatly improved; an external detection port is omitted and an excellent waterproof structure is adopted, so that the possibility of equipment damage caused by environmental factors is reduced, the service life is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to a waterproof structure for a valve well monitoring instrument without an airtightness detection port. Background Technology

[0002] Valve wells (hereinafter referred to as valve wells) are wells set up for convenient operation when inspecting water, oil, and natural gas pipelines; valve well monitoring instruments are installed inside valve wells to detect whether the valve well has conditions such as abnormal water accumulation, methane gas leakage, or abnormal manhole cover movement.

[0003] Traditional valve well monitoring equipment mostly requires airtightness testing ports on the casing for leak checks and maintenance. This design not only increases the risk of casing leakage but also limits the long-term stable operation of the monitoring equipment. Furthermore, since valve wells are typically exposed to humid or harsh environments, the equipment's waterproof performance becomes a crucial factor in ensuring its normal functioning.

[0004] Currently, valve well monitoring instruments on the market employ two testing schemes for casing protection during the production stage: one is IP68 testing (sampling inspection), and the other is a full airtightness inspection of the product at the time of shipment, with a reserved airtightness testing port. Both methods have their own risks. Scheme one (IP68 testing (sampling inspection)) cannot cover all products leaving the factory, and the sample units used for sampling cannot be sold directly. Scheme two (full airtightness inspection) increases the risk of damage due to the reserved port, indirectly weakening the overall protection of the instrument. Currently, valve well monitoring instruments all use these two protection testing schemes, and the aforementioned drawbacks are difficult to avoid during production and use. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a technical solution for a waterproof structure of a valve well monitoring instrument without an airtight detection port, which replaces the traditional valve well monitoring instrument structure, enhances the overall protection of the instrument, and reduces the cost and difficulty of maintenance.

[0006] The aforementioned waterproof structure for a valve well monitoring instrument without an airtightness detection port is characterized in that the protective housing of the valve well monitoring instrument consists of a protective housing body and a protective housing cover. A rubber ring groove is provided around the circumference of the protective housing body, and a protective housing rubber ring is placed inside the groove. The protective housing body and the protective housing cover are sealed by the protective housing rubber ring. Inside the protective housing body are a pressure sensor, a motherboard potting box, a battery potting box, and an antenna anti-rotation bracket. A laser ranging base is located on the top outer side of the protective housing body, and a laser ranging sensor is installed on the laser ranging base. A sensor decorative cover is installed on the outside of the laser ranging sensor. A laser methane sensor and a liquid level float sensor are located on the bottom outer side of the protective housing body. A rod-shaped antenna is located on the right side of the outer side of the protective housing body.

[0007] The waterproof structure of the valve well monitoring instrument without an airtightness detection port is characterized in that the main board potting box is fixedly installed in the middle of the protective shell body by screws, the main circuit control board is installed inside the main board potting box, and the cavity inside the main board potting box is filled with potting glue.

[0008] The waterproof structure of the valve well monitoring instrument without an airtight detection port is characterized in that the antenna anti-rotation bracket is fixedly installed in the middle of the protective housing body by screws.

[0009] The waterproof structure of the valve well monitoring instrument without an airtightness detection port is characterized in that the main control board of the circuit is provided with an SMA adapter. The hexagonal part of the SMA adapter achieves the anti-rotation effect by fitting into the straight slot through hole of the antenna anti-rotation bracket. The SMA adapter then passes through the side through hole of the protective housing body, and is sealed and fixed by external silicone pad and SMA nut of the SMA adapter by tightening. The rod antenna is installed on the right side of the outer side of the protective housing body by screwing it into the SMA adapter.

[0010] The waterproof structure of the valve well monitoring instrument without an airtightness detection port is characterized in that the battery potting box is fixedly installed at the lower part of the protective shell body by screws, and a large battery and a small battery are installed inside the battery potting box, and the internal cavity of the battery potting box is filled with potting glue.

[0011] The waterproof structure of the valve well monitoring instrument without an airtightness detection port is characterized in that the pressure sensor is bonded to the inner wall of the protective housing.

[0012] The waterproof structure of the valve well monitoring instrument without an airtight detection port is characterized in that the wire of the laser ranging sensor passes through the central through hole of the laser ranging base and the central through hole is sealed with a silicone pad; the laser ranging sensor is fixed to the upper surface of the laser ranging base by screws, and the sensor decorative cover covers the laser ranging sensor from top to bottom, and the sensor decorative cover is fixed to the upper end of the laser ranging base by screws.

[0013] The waterproof structure of the valve well monitoring instrument without an airtightness detection port is characterized in that a D-shaped anti-rotation hole is opened on the top of the outer side of the protective shell body, the D-shaped stud at the bottom of the laser ranging base passes through the D-shaped anti-rotation hole and is fixed by a nut, and the D-shaped stud and the D-shaped anti-rotation hole are sealed by an O-ring.

[0014] The waterproof structure of the valve well monitoring instrument without an airtight detection port is characterized in that the laser methane sensor has its own thread and is screwed into the protective housing body, and thread sealant is applied at the thread.

[0015] The waterproof structure of the valve well monitoring instrument without an airtight detection port is characterized in that the liquid level float sensor has its own thread and is screwed into the protective housing body, and thread sealant is applied at the thread.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. Traditional valve well monitoring instruments require an airtightness detection port, which increases the risk of leakage and manufacturing complexity; this solution eliminates the detection port and achieves airtightness monitoring through a built-in pressure sensor, simplifying the equipment design.

[0018] 2. Traditional valve well monitoring instruments are easily affected by humid or harsh environments and cannot operate stably for a long time; this solution adopts a multi-layer waterproof structure including silicone gasket seal, O-ring seal, and threaded adhesive seal, which greatly improves the waterproof performance of the equipment.

[0019] 3. The installation and sealing structure of the components have been optimized, and with the help of potting compound and threaded fixing, assembly is simple and efficient, while improving airtightness and reliability;

[0020] 4. The external inspection port is eliminated and a superior waterproof structure is adopted to reduce the possibility of equipment damage due to environmental factors, extend service life, and reduce maintenance costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main body structure of this utility model;

[0022] Figure 2 for Figure 1 AA section view;

[0023] Figure 3 This is an isometric view of the explosion of this utility model;

[0024] Figure 4 This is an isometric view of the SMA adapter in the main control board of the circuit.

[0025] In the diagram: 1. Protective housing body; 2. Protective housing rubber ring; 3. Protective housing cover; 4. Circuit main control board; 5. Main board potting box; 6. Pressure sensor; 7. Large battery; 8. Small battery; 9. Battery potting box; 10. Laser methane sensor; 11. Liquid level float sensor; 12. Laser ranging base; 13. Laser ranging sensor; 14. Sensor decorative cover; 15. Antenna anti-rotation bracket; 16. Rod antenna. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] A waterproof structure for a valve well monitoring instrument without an airtightness detection port is disclosed. The protective housing of the valve well monitoring instrument consists of a protective housing body 1 and a protective housing cover 3. The protective housing body 1 has a rubber ring groove around its circumference, and a protective housing rubber ring 2 is installed in the rubber ring groove. The protective housing body 1 and the protective housing cover 3 are sealed by the protective housing rubber ring 2. Inside the protective housing body 1, a pressure sensor 6, a motherboard potting box 5, a battery potting box 9, and an antenna anti-rotation bracket 15 are installed. A laser ranging base 12 is installed on the top of the outer side of the protective housing body 1, and a laser ranging sensor 13 is installed on the laser ranging base 12. A sensor decorative cover 14 is installed on the outside of the laser ranging sensor 13. A laser methane sensor 10 and a liquid level float sensor 11 are installed on the bottom of the outer side of the protective housing body 1. A rod-shaped antenna 16 is installed on the right side of the outer side of the protective housing body 1.

[0028] Specifically, the motherboard potting box 5 is fixed in the middle of the protective housing body 1 by screws. The main circuit control board 4 is installed inside the motherboard potting box 5, and the cavity inside the motherboard potting box 5 is filled with potting glue. The antenna anti-rotation bracket 15 is fixed in the middle of the protective housing body 1 by screws. The main circuit control board 4 is equipped with an SMA adapter. The hexagonal part of the SMA adapter achieves the anti-rotation effect by fitting with the straight slot through hole of the antenna anti-rotation bracket. The SMA adapter then passes through the side through hole of the protective housing body, and is sealed and fixed by externally fitting a silicone pad and tightening the SMA nut of the SMA adapter. The rod antenna is installed on the right side of the outer side of the protective housing body by screwing it with the SMA adapter.

[0029] The battery potting box 9 is fixed to the lower part of the protective housing body 1 by screws. The battery potting box 9 contains a large battery 7 and a small battery 8. The internal cavity of the battery potting box 9 is filled with potting glue. The pressure sensor 6 is attached to the inner wall of the protective housing body 1 with its own adhesive backing.

[0030] The wire of the laser rangefinder 13 passes through the central through hole of the laser rangefinder base 12, and the central through hole is sealed with a silicone pad. The laser rangefinder 13 is fixed to the upper surface of the laser rangefinder base 12 with screws. The sensor decorative cover 14 covers the laser rangefinder 13 from top to bottom and is fixed to the upper end of the laser rangefinder base 12 with screws. A D-shaped anti-rotation through hole is opened on the top of the outer side of the protective housing body 1. The D-shaped stud at the bottom of the laser rangefinder base 12 passes through the D-shaped anti-rotation through hole and is fixed with a nut. The D-shaped stud and the D-shaped anti-rotation through hole are sealed with an O-ring.

[0031] The laser methane sensor 10 has its own threads and is screwed into the protective housing body 1, with threadlocker applied to the threads; the liquid level float sensor 11 has its own threads and is screwed into the protective housing body 1, with threadlocker applied to the threads. Example

[0032] This utility model is a waterproof structure for a valveless well monitoring instrument with no detection port that can monitor airtightness. It mainly includes a protective housing body 1, a protective housing cover 3, a main circuit control board 4 (including an SMA adapter), a battery pack, a pressure sensor 6, a laser methane sensor 10, a liquid level float sensor 11, a laser rangefinder sensor 13, and a rod antenna 16.

[0033] The laser rangefinder 13 is installed on the upper outer side of the protective housing body 1; the laser methane sensor 10 and the liquid level float sensor 11 are installed on the lower outer side of the protective housing body 1; the rod antenna 16 is installed on the right outer side of the protective housing body 1; the pressure sensor 6 is attached to the upper left inner side of the protective housing body 1 with its own adhesive; the main circuit control board 4 (including the SMA adapter) is installed in the middle inner side of the protective housing body 1; the battery pack is installed in the lower inner side of the protective housing body 1; the protective housing rubber ring 2 is embedded in the rubber ring groove of the protective housing body 1, and together with the protective housing cover 3, the entire machine is installed.

[0034] The specific assembly process is as follows:

[0035] The wire of the laser rangefinder sensor 13 passes through the central through-hole of the laser rangefinder base 12, and the central through-hole is sealed with a silicone gasket. The laser rangefinder sensor 13 is fixed to the upper surface of the laser rangefinder base 12 with two M2*6 screws. The sensor decorative cover 14 covers the laser rangefinder sensor 13 from top to bottom and is fixed to the upper end of the laser rangefinder base 12 with four M3*12 screws. The D-shaped stud of the laser rangefinder base 12 passes through the D-shaped anti-rotation through-hole at the upper end of the protective housing body 1 to play an anti-rotation limiting role. The laser rangefinder sensor 13 is tightened with an M16 nut. The D-shaped stud at the base 12 is used to simultaneously compress the O-ring between the D-shaped anti-rotation through hole and the D-shaped stud to deform it and achieve a surface seal between the protective housing body 1 and the laser ranging base 12; the laser methane sensor 10 and the liquid level float sensor 11 are tightened to the threaded through hole at the bottom of the protective housing body 1 and sealed with thread sealant; the antenna anti-rotation bracket 15 is fixed to the inner surface of the protective housing body 1 using an M3*6 screw, and the SMA adapter in the main control board 4 passes through the straight slot through hole of the antenna anti-rotation bracket 15, and the hexagonal part of the SMA adapter is open to the airflow. The anti-rotation effect is achieved by fitting with the straight slot-type through hole, and then it passes through the side through hole of the protective housing body 1 and is sealed and fixed by tightening the SMA nut with the silicone pad from the outside. The rod antenna 16 is installed on the right side of the outer side of the protective housing body 1 by tightening the thread with the SMA adapter; the pressure sensor 6 is attached to the inner wall of the protective housing body 1 with its own adhesive; the main control board part of the circuit main control board 4 is placed in the motherboard potting box 5, and the internal cavity is filled and fixed with potting glue. The motherboard potting box 5 is fixed to the inner surface of the protective housing body 1 with two M3*8 screws; two large batteries 7. Two small batteries 8 are placed in the battery potting box 9. The internal cavity is filled and fixed with potting compound. The battery potting box 9 is fixed to the inner surface of the protective housing body 1 with 4 M3*8 screws. Inside the protective housing body 1, the pressure sensor 6, battery pack, laser methane sensor 10, liquid level float sensor 11, and laser rangefinder sensor 13 are connected to the main control board 4 of the circuit in an air-connected manner. The protective housing rubber ring 2 is placed in the waterproof rubber ring groove of the protective housing body 1, the protective housing cover 3 is closed, and the housing is sealed with 6 M4*16 screws.

[0036] When in use, a gas pressure detection module can be added inside the valve well monitor. During production, gas is extracted from inside the valve well monitor to reduce the gas pressure, so that the gas pressure inside the monitor is significantly different from the external atmospheric pressure. During use, the gas pressure detection module can detect the gas pressure inside the monitor in real time, thereby monitoring the overall protection of the machine in real time.

[0037] Compared to IP68 testing and spot checks, the shell protection test of this utility model can cover all products leaving the factory, and the tested samples can be sold directly; compared to the full inspection of airtightness test, this utility model does not reduce the overall protection of the machine by reserving an airtightness test port; compared with the above traditional factory inspection schemes, this utility model, after building a built-in air pressure detection module, can monitor the protection of the whole machine in real time and trace the time point when the protection decreases.

Claims

1. A waterproof structure for a valve well monitoring instrument without an airtightness detection port, characterized in that... The protective housing of the valve well monitoring instrument consists of a protective housing body and a protective housing cover. The protective housing body has a rubber ring groove around its circumference, and a protective housing rubber ring is installed in the rubber ring groove. The protective housing body and the protective housing cover are sealed by the protective housing rubber ring. Inside the protective housing body, there is a pressure sensor, a motherboard potting box, a battery potting box, and an antenna anti-rotation bracket. A laser ranging base is installed on the top of the outer side of the protective housing body, and a laser ranging sensor is installed on the laser ranging base. A sensor decorative cover is installed on the outside of the laser ranging sensor. A laser methane sensor and a liquid level float sensor are installed on the bottom of the outer side of the protective housing body. A rod-shaped antenna is installed on the right side of the outer side of the protective housing body.

2. The waterproof structure of a valve well monitoring instrument without an airtightness detection port according to claim 1, characterized in that... The motherboard potting box is fixedly installed in the middle of the protective housing body by screws. The main circuit control board is installed inside the motherboard potting box, and the cavity inside the motherboard potting box is filled with potting glue.

3. The waterproof structure of a valve well monitoring instrument without an airtightness detection port according to claim 2, characterized in that... The antenna anti-rotation bracket is fixedly installed in the middle of the protective housing body by screws.

4. The waterproof structure of a valve well monitoring instrument without an airtightness detection port according to claim 3, characterized in that... The main control board of the circuit is equipped with an SMA adapter. The hexagonal part of the SMA adapter achieves the anti-rotation effect by fitting into the straight slot through hole of the antenna anti-rotation bracket. The SMA adapter then passes through the side through hole of the protective housing body, and is sealed and fixed by external silicone pad and tightening the SMA nut of the SMA adapter. The rod antenna is installed on the right side of the outer side of the protective housing body by screwing it into the SMA adapter.

5. The waterproof structure of a valve well monitoring instrument without an airtightness detection port according to claim 1, characterized in that... The battery potting box is fixed to the lower part of the protective housing body by screws. The battery potting box contains a large battery and a small battery, and the internal cavity of the battery potting box is filled with potting glue.

6. The waterproof structure of a valve well monitoring instrument without an airtightness detection port according to claim 1, characterized in that... The pressure sensor is bonded to the inner wall of the protective housing.

7. The waterproof structure of a valve well monitoring instrument without an airtightness detection port according to claim 1, characterized in that... The wire of the laser rangefinder sensor passes through the central through hole of the laser rangefinder base, and the central through hole is sealed with a silicone pad. The laser rangefinder sensor is fixed to the upper surface of the laser rangefinder base with screws. The sensor decorative cover covers the laser rangefinder sensor from top to bottom and is fixed to the upper end of the laser rangefinder base with screws.

8. The waterproof structure of a valve well monitoring instrument without an airtightness detection port according to claim 7, characterized in that... The protective housing body has a D-shaped anti-rotation hole on the top of its outer side. The D-shaped stud at the bottom of the laser ranging base passes through the D-shaped anti-rotation hole and is fixed by a nut. The D-shaped stud and the D-shaped anti-rotation hole are sealed by an O-ring.

9. The waterproof structure of a valve well monitoring instrument without an airtightness detection port according to claim 1, characterized in that... The laser methane sensor has its own threads and is screwed into the protective housing body. Threadlocker is applied to the threads.

10. The waterproof structure of a valve well monitoring instrument without an airtightness detection port according to claim 1, characterized in that... The liquid level float sensor has its own threads and is screwed into the protective housing body. Threadlocker is applied to the threads.

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