Waterproof structure of valve pit monitor with built-in gas sensor

Abstract

The utility model relates to a valve pit monitor waterproof structure with a built-in gas sensor. The valve pit monitor is characterized in that a shell of the valve pit monitor is composed of an upper protection shell, a middle protection body and a lower protection shell, the upper protection shell and the lower protection shell are connected with the middle protection body through screws, and the upper protection shell and the lower protection shell are each provided with a waterproof ventilation valve; a pair of guide rail sliding grooves are formed in the opposite sides of the inner wall of the protection middle body, an internal supporting plate is arranged in the guide rail sliding grooves in a matched mode, a plurality of installation holes are formed in the internal supporting plate, and the battery glue pouring box, the mainboard glue pouring box, the sensor support and the laser methane sensor are installed in the corresponding installation holes through screws. Through the waterproof and breathable structural design of the protective shell and the built-in sensor, damage to the sensor, data distortion and generation of condensate water are avoided, the protective performance of the whole machine is improved, meanwhile, the maintenance structure is simplified, and the maintenance cost is reduced; the stable and reliable use of the valve pit monitor in an actual use scene is realized, and the difficulty and cost of later maintenance are reduced.

Description

Technical Field

[0001] This utility model relates to a waterproof structure for a valve well monitoring instrument with a built-in gas sensor. 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] Currently, all sensors in valve well monitoring instruments on the market are in direct contact with the environment to collect various data, which presents several risks: (1) The sensors are in direct contact with the harsh external environment, which can lead to damage such as electrostatic breakdown and water immersion failure; (2) Sewage can immerse the built-in ring optical path of the laser methane sensor, which can easily leave stains on it, weakening the laser signal passing through the optical path and causing data distortion; (3) As valve well monitoring instruments are outdoor equipment, they are prone to condensation due to temperature differences, which can cause malfunctions in electronic components such as circuit boards; (4) The large number of external sensors increases the risk of damage to the overall protection of the instrument; (5) There are currently no valve well monitoring instruments that support remote monitoring of the overall protection of the instrument. At present, valve well monitoring instruments with external sensors all work by directly collecting environmental data, and the above-mentioned disadvantages are difficult to avoid during use. Utility Model Content

[0004] 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 with a built-in gas sensor.

[0005] The waterproof structure of the valve well monitoring instrument with built-in gas sensor is characterized in that the housing of the valve well monitoring instrument is composed of a protective upper shell, a protective middle body, and a protective lower shell. The protective upper shell and the protective lower shell are connected to the protective middle body by screws. Both the protective upper shell and the protective lower shell are equipped with waterproof and breathable valves. A pair of guide rail grooves are provided on opposite sides of the inner wall of the protective middle body. An internal support plate is installed in the guide rail grooves. Multiple mounting holes are opened on the internal support plate. The battery potting box, the motherboard potting box, the sensor bracket, and the laser methane sensor are installed in the corresponding mounting holes by screws.

[0006] The waterproof structure of the valve well monitoring instrument with built-in gas sensor is characterized in that the motherboard potting box is installed on the outer side of the upper end of the internal support plate, the battery potting box is installed on the inner side of the upper end of the internal support plate, the sensor bracket is installed on the outer side of the lower end of the internal support plate, and the laser methane sensor is installed on the inner side of the lower end of the internal support plate.

[0007] The waterproof structure of the valve well monitoring instrument with built-in gas sensor is characterized in that a non-contact liquid level sensor and a two-in-one antenna are bonded to the inner side of the lower end of the protective body.

[0008] The waterproof structure of the valve well monitoring instrument with built-in gas sensor is characterized in that the internal support plate is embedded in the guide rail groove of the protective middle body, and its position is fixed by the upper and lower protective shells.

[0009] The waterproof structure of the valve well monitoring instrument with built-in gas sensor is characterized in that the waterproof and breathable valve has a built-in thread, and thread sealant is applied to the thread.

[0010] The waterproof structure of the valve well monitoring instrument with built-in gas sensor is characterized in that a lithium battery is installed inside the battery potting box.

[0011] The waterproof structure of the valve well monitoring instrument with built-in gas sensor is characterized in that the main control circuit board is installed inside the motherboard potting box.

[0012] The waterproof structure of the valve well monitoring instrument with built-in gas sensor is characterized in that the sensor bracket is divided into upper and lower parts, which are respectively installed with a temperature sensor and a humidity sensor.

[0013] This utility model, through the waterproof and breathable structure design of the protective shell and the built-in sensor, avoids sensor damage, data distortion, and condensation. While improving the overall protection performance, it simplifies the maintenance structure and reduces maintenance costs, enabling the valve well monitoring instrument to be used stably and reliably in actual use scenarios and reducing the difficulty and cost of later maintenance. In addition, it can upload time, location, and status to the system platform in real time through the main control circuit board, which can be used for later traceability.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. Prevent damage to various sensors on the valve well monitoring instrument due to direct contact with harsh environments;

[0016] 2. The sensors of the valve well monitoring instrument were contaminated due to the harsh environment, resulting in data distortion;

[0017] 3. Prevent condensation from forming inside the valve well monitoring instrument housing, which could damage electronic components;

[0018] 4. By using the valve well monitoring instrument housing to prevent sensor leakage, the overall protection risk of the device is reduced;

[0019] 5. Due to the maturity of the waterproof and breathable component industry, the maintenance cost and difficulty of the whole machine are reduced. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the device of this utility model;

[0021] Figure 2 for Figure 1 AA section view;

[0022] Figure 3 This is an isometric view of the device of this utility model after explosion;

[0023] Figure 4 This is a schematic diagram of the external three-axis manhole cover movement detector of this utility model.

[0024] Figure 5 This is a schematic diagram of the modules in operation of this utility model;

[0025] In the diagram: 1. Protective upper shell; 2. Protective middle shell; 3. Protective lower shell; 4. Internal support plate; 5. Laser methane sensor; 6. Battery potting box; 7.2V lithium battery; 7. Mainboard potting box; 8. Main control circuit board; 9. Temperature sensor; 10. Humidity sensor; 11. Sensor bracket; 12. Non-contact liquid level sensor; 13. Two-in-one antenna; 14. Waterproof and breathable valve; 15. M4*14 Phillips pan head screw; 16. M3*8 Phillips pan head screw; 17. M2*20 Phillips pan head screw; 18. M2*5 Phillips pan head screw; 19. Three-axis manhole cover movement detector; 20. 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 with a built-in gas sensor is disclosed. The instrument's housing consists of a protective upper shell, a protective middle shell, and a protective lower shell. The upper and lower shells are connected to the middle shell via screws. Both the upper and lower shells are equipped with waterproof and breathable valves with threads. Threadlocker is applied to the threads during installation for waterproofing and secure fastening. A pair of guide rail grooves are provided on opposite sides of the inner wall of the middle shell. An internal support plate is embedded in the guide rail grooves of the middle shell and its position is fixed by the upper and lower shells. Multiple mounting holes are provided on the internal support plate. A battery potting box, a motherboard potting box, a sensor bracket, and a laser methane sensor are installed in the corresponding mounting holes via screws. A lithium battery is housed in the battery potting box, and the main control circuit board is housed in the motherboard potting box. The sensor bracket is divided into upper and lower sections, respectively housing a temperature sensor and a humidity sensor.

[0028] During installation, the motherboard potting box is installed on the outer side of the upper end of the internal support plate, the battery potting box is installed on the inner side of the upper end of the internal support plate, the sensor bracket is installed on the outer side of the lower end of the internal support plate, and the laser methane sensor is installed on the inner side of the lower end of the internal support plate; a non-contact liquid level sensor and a two-in-one antenna are bonded to the inner side of the lower end of the protective body. Example

[0029] A waterproof structure for a valve well monitoring instrument with a built-in gas sensor is provided. The housing contains a laser methane sensor 5, a 7.2V lithium battery 7, a main control circuit board 9, a temperature sensor 10, a humidity sensor 11, a non-contact liquid level sensor 13, a dual-mode antenna 14, and a waterproof and breathable valve 15. A triaxial well cover anomaly detector 20 is installed at the wellhead where the valve well monitoring instrument is placed.

[0030] The main control circuit board 9 is installed on the outer side of the upper end of the internal support plate 4, the 7.2V lithium battery 7 is installed on the inner side of the upper end of the internal support plate 4, the temperature sensor 10 and the humidity sensor 11 are installed on the outer side of the lower end of the internal support plate 4, and the laser methane sensor 5 is installed on the inner side of the lower end of the internal support plate 4; two waterproof and breathable valves 15 are respectively installed on the upper protective shell 1 and the lower protective shell 3, and the non-contact liquid level sensor 13 and the two-in-one antenna 14 are fixed to the inner side of the lower end of the protective middle body 2 with self-adhesive backing; the internal support plate 4 is embedded in the guide rail groove of the protective middle body 2, and its position is limited and fixed by the installation of the upper protective shell 1 and the lower protective shell 3.

[0031] The specific assembly process is as follows:

[0032] The main control circuit board 9 is fixed to the motherboard potting box 8 using four M2*5 Phillips head screws 19. The 7.2V lithium battery 7 is inserted into the cavity of the battery potting box 6. The temperature sensor 10 and humidity sensor 11 are embedded in two sensor brackets 12 respectively. The battery potting box 6 and the motherboard potting box 8 are fixed to the upper mounting holes of the internal support plate 4 using four M2*20 Phillips head screws 18. The laser methane sensor 5 and one sensor bracket 12 (the position order of the humidity sensor and temperature sensor is the same) are fixed to the lower mounting holes of the internal support plate 4 using two M3*8 Phillips head screws 17. The two sensor brackets 12 (the position order of the humidity sensor and temperature sensor is the same) are fixed to the lower mounting holes of the internal support plate 4 using two M3*8 Phillips head screws 17. The two sensor brackets 12 are installed staggered vertically. The non-contact liquid level sensor 13 and the two-in-one day... Line 14 is attached to the lower edge of the inner wall of the protective middle body 2 with its own adhesive backing; a waterproof and breathable valve 15 is installed on the upper protective shell 1 and the lower protective shell 3 respectively, and is fixed by its own thread. Thread glue needs to be added to the threaded area for waterproofing and fastening; the internal support plate 4 quickly and stably installs its components into the instrument through the guide rail groove on the inner wall of the protective middle body 2; the laser methane sensor 5, 7.2V lithium battery 7, temperature sensor 10, humidity sensor 11, non-contact liquid level sensor 13, and two-in-one antenna 14 are wired to the main control circuit board 9 via an overhead connection; the lower protective shell 3 is installed on the lower side of the protective middle body with four M4*14 Phillips head screws 16, and the upper protective shell 1 is installed on the upper side of the protective middle body with four M4*14 Phillips head screws 16; a wireless connection is established with the three-axis manhole cover anomaly detector 20 via Bluetooth.

[0033] This invention integrates a laser methane sensor 5, a temperature sensor 10, a humidity sensor 11, and a non-contact liquid level sensor 13 within the valve well and housing. A triaxial well cover anomaly detector 20 is linked to the monitoring instrument via Bluetooth. Sensors are installed within the monitoring instrument itself, avoiding direct contact between the sensors and the environment, thus preventing sensor damage, data distortion, and reduced overall protection. A waterproof and breathable valve 15 is installed on the housing, enabling waterproof and breathable operation. This prevents condensation while enhancing gas convection, increasing the timeliness and accuracy of gas state detection. Because the housing is waterproof and breathable, the humidity inside should remain relatively constant. Significant humidity fluctuations can lead to a decrease in overall protection. Since the waterproof and breathable component is the only part on the outside of the housing, the entire unit is easy to maintain; furthermore, the waterproof and breathable valve and membrane technologies are mature, resulting in low maintenance costs.

[0034] The waterproof structure of this utility model valve well monitoring instrument replaces the traditional external gas sensor valve well protection structure, which can enhance the overall protection of the instrument, improve the protection of the sensor, avoid data distortion, and is low-cost and easy to maintain. Moreover, the time, location and status are uploaded to the system platform in real time, and can be traced later.

Claims

1. A waterproof structure for a valve well monitoring instrument with a built-in gas sensor, characterized in that... The valve well monitoring instrument's housing consists of a protective upper shell, a protective middle shell, and a protective lower shell. The protective upper shell and the protective lower shell are connected to the protective middle shell by screws. Both the protective upper shell and the protective lower shell are equipped with waterproof and breathable valves. A pair of guide rail grooves are provided on opposite sides of the inner wall of the protective middle shell. An internal support plate is installed in the guide rail grooves. Multiple mounting holes are opened on the internal support plate. The battery potting box, the motherboard potting box, the sensor bracket, and the laser methane sensor are installed in the corresponding mounting holes by screws.

2. The waterproof structure of a valve well monitoring instrument with a built-in gas sensor according to claim 1, characterized in that... The motherboard potting box is installed on the outer side of the upper end of the internal support plate, the battery potting box is installed on the inner side of the upper end of the internal support plate, the sensor bracket is installed on the outer side of the lower end of the internal support plate, and the laser methane sensor is installed on the inner side of the lower end of the internal support plate.

3. The waterproof structure of a valve well monitoring instrument with a built-in gas sensor according to claim 1, characterized in that... A non-contact liquid level sensor and a dual-mode antenna are bonded to the inner side of the lower end of the protective body.

4. The waterproof structure of a valve well monitoring instrument with a built-in gas sensor according to claim 1, characterized in that... The internal support plate is embedded in the guide rail groove of the protective middle body, and its position is fixed by the upper and lower protective shells.

5. The waterproof structure of a valve well monitoring instrument with a built-in gas sensor according to claim 1, characterized in that... The waterproof and breathable valve has its own threads, and threadlocker is applied to the threads.

6. The waterproof structure of a valve well monitoring instrument with a built-in gas sensor according to claim 1, characterized in that... The battery potting box contains a lithium battery.

7. The waterproof structure of a valve well monitoring instrument with a built-in gas sensor according to claim 1, characterized in that... The main control circuit board is installed inside the motherboard potting box.

8. The waterproof structure of a valve well monitoring instrument with a built-in gas sensor according to claim 1, characterized in that... The sensor bracket is divided into upper and lower sections, which respectively house the temperature sensor and the humidity sensor.

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