Intelligent early warning detection system for associated gas of operation under pressure

Abstract

The utility model discloses an under-pressure operation associated gas intelligent early warning detection system which comprises a gas detector, a liquid level sensor and a sound-light alarm lamp, the gas detector and the liquid level sensor are both installed on the outer wall of the top of a hydraulic oil tank and electrically connected with the sound-light alarm lamp, and the sound-light alarm lamp is installed above a radiator of under-pressure operation equipment. A probe of the gas detector penetrates through the tank wall of the hydraulic oil tank and then is arranged in the hydraulic oil tank, and a draft fan is arranged below the probe and connected to the probe; a liquid level sensing assembly is installed at the position, corresponding to the liquid level sensor, of the inner wall of the top of the hydraulic oil tank, and the liquid level sensing assembly is connected with the liquid level sensor. By means of double insurance of gas detection and liquid level detection, detection is timely and high in accuracy, associated gas can be found in time, sound-light alarm can be given out, and well control accidents caused by leakage of the associated gas can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, and in particular to an intelligent early warning detection system for associated gas in pressure operations. Background Art

[0002] The medium in the natural gas well is associated gas, which is compressible, has a low ignition point, is flammable and explosive, and has an explosion limit of 5% to 15% (V%) at normal temperature and pressure. When the gas well is under pressure, once the associated gas leaks and accumulates in the hydraulic oil tank, it will cause immeasurable well control accidents. For example, part of the associated gas is released into the nearby air through the oil tank, and it will catch fire and even explode on the ground when it encounters sparks; part of the associated gas is compressed to generate high pressure, which will cause the hydraulic oil tank to burst, and the hydraulic oil leakage will pollute the environment. At the same time, the failure of the hydraulic system will cause blowouts, uncontrolled falling of the pipe string into the well or flying out, resulting in huge personnel and economic losses. Timely detection of associated gas and corresponding treatment are important safety measures for gas well pressure construction! Therefore, we proposed an intelligent early warning detection system for associated gas under pressure operation. Utility Model Content

[0003] The utility model aims to provide an intelligent early warning detection system for associated gas in pressure operation to solve the above-mentioned problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses an intelligent early warning detection system for associated gas in pressurized operation, comprising a gas detector, a liquid level sensor and an audible and visual alarm lamp, wherein the gas detector and the liquid level sensor are both mounted on the top outer wall of a hydraulic oil tank and are electrically connected to the audible and visual alarm lamp, the audible and visual alarm lamp is mounted above a radiator of pressurized operation equipment, a probe of the gas detector penetrates through the box wall of the hydraulic oil tank and is disposed inside the hydraulic oil tank, an exhaust fan is arranged below the probe, and the exhaust fan is connected to the probe; a liquid level sensing component is mounted on the top inner wall of the hydraulic oil tank at a position corresponding to the liquid level sensor, and the liquid level sensing component is connected to the liquid level sensor.

[0006] Furthermore, the gas detector, liquid level sensor, sound and light alarm lamp and exhaust fan are all powered by a 24V battery.

[0007] Furthermore, the gas detector can be controlled by infrared.

[0008] Furthermore, the exhaust fan is connected to the probe via a mounting bracket.

[0009] Furthermore, the liquid level sensing component includes a mounting rod connected to the top inner wall of the hydraulic oil tank, a T-shaped hole is opened at the center position of the mounting rod, a lifting rod is slidably connected in the T-shaped hole, a float is connected to the bottom of the lifting rod, the top of the lifting rod is placed in the T-shaped hole and connected to a fixing plate, a bar magnet is connected to the fixing plate, a reed switch is provided above the bar magnet, and the reed switch is connected to the liquid level sensor.

[0010] Compared with the prior art, the beneficial technical effects of the utility model are:

[0011] The utility model provides dual insurance of gas detection and liquid level detection, and the detection is timely and accurate, and the associated gas can be discovered in time and an audible and visual alarm can be issued, which can effectively avoid well control accidents caused by leakage of the associated gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model will be further described below in conjunction with the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the installation of the intelligent early warning detection system for associated gas in pressurized operation of the utility model;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0015] Explanation of the reference numerals: 1. Gas detector; 101. Probe; 2. Liquid level sensor; 3. Sound and light alarm lamp; 4. Hydraulic oil tank; 5. Exhaust fan; 6. Mounting frame; 7. Mounting rod; 8. Lifting rod; 9. Float; 10. T-hole; 11. Fixing plate; 12. Bar magnet; 13. Reed switch; 14. 24V battery. DETAILED DESCRIPTION

[0016] like Figure 1-2 As shown, an intelligent early warning detection system for associated gas in pressurized operations includes a gas detector 1, a liquid level sensor 2 and an audible and visual alarm lamp 3.

[0017] The gas detector 1 and the liquid level sensor 2 are both installed on the top outer wall of the hydraulic oil tank 4 and are electrically connected to the sound and light alarm lamp 3 .

[0018] The sound and light warning lamp 3 is installed above the radiator of the pressurized working equipment.

[0019] The gas detector 1 can detect four gases, namely oxygen (O2), combustible gas (methane, etc.), hydrogen sulfide (H2S) and carbon monoxide (CO), and all of them are detected through a probe 101. The detected values ​​can be displayed on the screen of the gas detector 1. The probe 101 of the gas detector 1 penetrates the box wall of the hydraulic oil tank 4 and is placed inside the hydraulic oil tank 4. An exhaust fan 5 is provided under the probe 101, and the exhaust fan 5 is connected to the probe 101 through a mounting bracket 6. The exhaust fan 5 can quickly blow the gas in the hydraulic oil tank 4 to the probe 101, so that the probe 101 can detect the associated gas more quickly. When the associated gas is detected, the sound and light alarm light 3 starts to alarm.

[0020] The gas detector 1 can be controlled by infrared, and parameters can be adjusted without opening the cover.

[0021] The gas detector 1, the liquid level sensor 2, the sound and light alarm lamp 3 and the exhaust fan 5 are all powered by a 24V battery.

[0022] A liquid level sensing component is installed on the top inner wall of the hydraulic oil tank 4 at a position corresponding to the liquid level sensor 2, and the liquid level sensing component is connected to the liquid level sensor 2. The liquid level sensing component includes a mounting rod 7 connected to the top inner wall of the hydraulic oil tank 4, a T-shaped hole 10 is opened at the center position of the mounting rod 7, a lifting rod 8 is slidably connected in the T-shaped hole, a floating ball 9 is connected to the bottom of the lifting rod 8, the top of the lifting rod 8 is placed in the T-shaped hole 10 and is connected to a fixing plate 11, a bar magnet 12 is connected to the fixing plate 11, a reed switch 13 is provided above the bar magnet 12, and the reed switch 13 is connected to the liquid level sensor 2. When gas enters the hydraulic oil tank, the liquid level will rise, thereby raising the float 9, and the bar magnet 12 will rise through the lifting rod 8 to approach the reed switch 13. The reed switch 13 senses that the magnetic field is getting stronger and stronger, and the two reed plates inside the reed switch 13 will continue to approach each other until they are attracted together and energized. After the liquid level sensor 2 senses the electrical signal and transmits the electrical signal to the sound and light alarm light 3, the sound and light alarm light 3 starts to alarm.

[0023] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An intelligent early warning detection system for associated gas in pressurized operations, characterized in that: The invention comprises a gas detector (1), a liquid level sensor (2) and an audible and visual alarm lamp (3); the gas detector (1) and the liquid level sensor (2) are both mounted on the top outer wall of a hydraulic oil tank (4) and electrically connected to the audible and visual alarm lamp (3); the audible and visual alarm lamp (3) is mounted above the radiator of the pressure-carrying operation equipment; a probe (101) of the gas detector (1) penetrates through the wall of the hydraulic oil tank (4) and is then placed inside the hydraulic oil tank (4); an exhaust fan (5) is provided below the probe (101); and the exhaust fan (5) is connected to the probe (101); a liquid level sensing component is mounted on the top inner wall of the hydraulic oil tank (4) at a position corresponding to the liquid level sensor (2); and the liquid level sensing component is connected to the liquid level sensor (2).

2. The intelligent early warning detection system for associated gas in pressure operation according to claim 1 is characterized in that: The gas detector (1), the liquid level sensor (2), the sound and light alarm lamp (3) and the exhaust fan (5) are all powered by a 24V battery (14).

3. The intelligent early warning detection system for associated gas in pressure operation according to claim 1 is characterized in that: The gas detector (1) can be controlled by infrared.

4. The intelligent early warning detection system for associated gas in pressure operation according to claim 1 is characterized in that: The exhaust fan (5) is connected to the probe (101) via a mounting frame (6).

5. The intelligent early warning detection system for associated gas in pressure operation according to claim 1 is characterized in that: The liquid level sensing component comprises a mounting rod (7) connected to the top inner wall of the hydraulic oil tank (4), a T-shaped hole (10) is provided at the center of the mounting rod (7), a lifting rod (8) is slidably connected in the T-shaped hole, a floating ball (9) is connected to the bottom of the lifting rod (8), the top of the lifting rod (8) is placed in the T-shaped hole (10) and connected to a fixing plate (11), a bar magnet (12) is connected to the fixing plate (11), a reed switch (13) is provided above the bar magnet (12), and the reed switch (13) is connected to the liquid level sensor (2).

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