Intelligent biogas water seal device

Abstract

The utility model discloses an intelligent methane water seal device which comprises a tank body with a seal cover, a gas inlet pipe and an overflow / exhaust pipe are arranged on the seal cover, a lower end pipe opening of the gas inlet pipe is located below liquid in the tank body, a lower end pipe opening of the overflow / exhaust pipe is located above the liquid in the tank body, and a water supplementing pipe is arranged at the upper end of the tank body. The lower end of the tank body is provided with a drainage pipe, the drainage pipe is provided with a drainage electromagnetic valve, the side wall of the tank body is provided with a [-shaped liquid level meter, the upper end of the liquid level meter is communicated with the upper end of the tank body, the lower end of the liquid level meter is communicated with the lower end of the tank body, and the bottom of the liquid level meter is provided with a micro-pressure sensor. According to the utility model, methane overflow caused by short-term or long-term water shortage of the tank body can be prevented; potential safety hazards caused by the fact that overpressure gas cannot be discharged out of the system in time due to the fact that the water seal liquid level is too high can be avoided; and the purpose of unattended water seal liquid level is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of biogas fermentation, and particularly relates to an intelligent biogas water seal device. Background Art

[0002] A water seal device is a gas isolation and anti-backflow device used in gas transmission systems for flammable and explosive gases such as biogas. Especially as a safety device to prevent the further expansion of accidents when gas combustion occurs, it is widely used.

[0003] Currently, the commonly used biogas water seal device relies on manual inspection of the water seal liquid level. When it is found that the water seal liquid level drops and does not meet the requirements, manual water replenishment is required; when the water seal liquid level is too high, manual drainage is required. There are situations of biogas overflow and exceeding the set pressure, bringing certain safety hazards; when the intake pressure of the biogas in the water seal suddenly changes, the liquid level in the water seal will surge significantly. Summary of the Invention

[0004] The purpose of the utility model is to aim at the deficiencies of the above-mentioned existing technologies and provide an intelligent biogas water seal device, which has functions of pressure recognition, feedback, automatic drainage and water supply, and does not require a special person to be responsible for real-time monitoring of the water seal liquid level.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An intelligent biogas water seal device, which includes a tank body with a cover. An air inlet pipe and an overflow / drain pipe are arranged on the cover. The lower end pipe orifice of the air inlet pipe is below the liquid in the tank body, and the lower end pipe orifice of the overflow / drain pipe is above the liquid in the tank body. A water replenishing pipe is arranged at the upper end of the tank body, and a water replenishing solenoid valve is arranged on the water replenishing pipe. A drain pipe is arranged at the lower end of the tank body, and a drain solenoid valve is arranged on the drain pipe. A "C"-shaped liquid level gauge is arranged on the side wall of the tank body. The upper end of the liquid level gauge is communicated with the upper end of the tank body, and the lower end of the liquid level gauge is communicated with the lower end of the tank body. A micro-pressure sensor is arranged at the bottom of the liquid level gauge.

[0007] Preferably, the lower end pipe orifice of the air inlet pipe is a circular porous perforated pipe.

[0008] Preferably, the aperture of the round holes on the perforated pipe is 3 - 5 mm, and the distance between adjacent round holes is 1 - 3 mm.

[0009] Preferably, the liquid level gauge is a transparent glass tube.

[0010] Preferably, the micro-pressure sensor, the water replenishing solenoid valve and the drain solenoid valve are all connected to an external PLC controller.

[0011] Preferably, the air inlet pipe, the overflow / drain pipe, the water replenishing pipe and the drain pipe are made of 304 stainless steel.

[0012] The beneficial effects of the present utility model are as follows: The present utility model can prevent biogas from overflowing due to short-term or long-term water shortage in the tank body; it can also avoid the water seal liquid level being too high, resulting in the inability of overpressure gas to be discharged from the system in time, causing potential safety hazards; it can realize the functions of automatic drainage and water supply, and there is no need for a special person to be responsible for monitoring the liquid level of the water seal in real time. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] In the figure, 1 is the tank body; 2 is the cover; 3 is the inlet gas pipe; 4 is the overflow / drain gas pipe; 5 is the make-up water pipe; 51 is the make-up water solenoid valve; 6 is the drain pipe; 61 is the drain solenoid valve; 7 is the liquid level gauge; 8 is the micro-pressure sensor. Detailed Embodiment

[0015] The present utility model will be further described below in conjunction with the drawings:

[0016] As Figure 1 shown, an intelligent biogas water seal device of the present utility model includes a tank body 1 with a cover 2. The cover 2 is provided with an inlet gas pipe 3 and an overflow / drain gas pipe 4. The lower end pipe orifice of the inlet gas pipe 3 is located below the liquid in the tank body 1. The lower end pipe orifice of the inlet gas pipe 3 is a circular multi-hole perforated pipe. The aperture of the round holes on the perforated pipe is 3-5 mm, and the distance between adjacent round holes is 1-3 mm. Specifically, the aperture of the round holes on the perforated pipe is 4 mm, and the distance between adjacent round holes is 2 mm, which is convenient for preventing the abnormal increase of biogas volume from causing unstable pressure and further causing the tank body 1 to overflow water.

[0017] The lower end pipe orifice of the overflow / drain gas pipe 4 in the present utility model is located above the liquid in the tank body 1. When the biogas volume increases abnormally, for safety protection, the liquid or biogas in the tank body 1 can be discharged through this pipe.

[0018] The upper end of the tank body 1 in the present utility model is provided with a make-up water pipe 5, and the make-up water pipe 5 is provided with a make-up water solenoid valve 51 for automatic water supply to the tank body 1; the lower end of the tank body 1 is provided with a drain pipe 6, and the drain pipe 6 is provided with a drain solenoid valve 61 for automatic drainage of the tank body 1.

[0019] On the side wall of the tank body 1 in the present utility model, there is a liquid level gauge 7 in a "C" shape. The upper end of the liquid level gauge 7 is communicated with the upper end of the tank body 1, and the lower end of the liquid level gauge 7 is communicated with the lower end of the tank body 1. The liquid level gauge 7 is a transparent glass tube, which can visually observe the liquid level. At the bottom of the liquid level gauge 7, there is a micro-pressure sensor 8 for reading the liquid level data. Among them, the micro-pressure sensor 8, the water replenishing solenoid valve 51 and the drain solenoid valve 61 are all connected to an external PLC controller. The change of the liquid level in the tank body 1 can immediately cause the change of the output signal of the micro-pressure sensor 8. When the micro-pressure sensor 8 continuously transmits the real-time sensed liquid level data in the tank body 1 to the PLC controller, the PLC controller processes these signals and compares them with the set value. If the micro-pressure sensor 8 senses that the liquid level in the tank body 1 is lower than the set value, the PLC controller immediately starts the water replenishing solenoid valve 51 to replenish water into the tank body 1 until it reaches the set value. If the micro-pressure sensor 8 senses that the liquid level in the tank body 1 is higher than the set value, the PLC controller immediately starts the drain solenoid valve 61 to drain the excess water in the tank body 1 until it reaches the set value, so as to realize the automatic drainage and water supply functions of the tank body 1, and there is no need for a special person to be responsible for monitoring the liquid level in the tank body 1 in real time.

[0020] The air inlet pipe 3, the overflow / exhaust pipe 4, the water replenishing pipe 5 and the drain pipe 6 in the present utility model are made of 304 stainless steel.

[0021] The using process of the present utility model is as follows:

[0022] When in use, first inject a certain amount of water into the tank body 1 through the water replenishing pipe 5, open the air inlet pipe 3, the biogas passes through the filtration and precipitation of water, and then is discharged through the overflow / exhaust pipe 4 for biogas utilization. During this operation process, the operator can visually observe the water level in the tank body 1 through the liquid level gauge 7, and the micro-pressure sensor 8 reads the water level data in the tank body 1 in real time. When the micro-pressure sensor 8 continuously transmits the real-time sensed liquid level data in the tank body 1 to the PLC controller, the PLC controller processes these signals and compares them with the set value. If the micro-pressure sensor 8 senses that the liquid level in the tank body 1 is lower than the set value, the PLC controller immediately starts the water replenishing solenoid valve 51 to replenish water into the tank body 1 until it reaches the set value. If the micro-pressure sensor 8 senses that the liquid level in the tank body 1 is higher than the set value, the PLC controller immediately starts the drain solenoid valve 61 to drain the excess water in the tank body 1 until it reaches the set value, so as to realize the automatic drainage and water supply functions, and there is no need for a special person to be responsible for monitoring the liquid level in the tank body 1 in real time.

[0023] Other parts not described in the present utility model are the same as the prior art.

Claims

1. An intelligent biogas water seal device, characterized in that It includes a tank body (1) with a cover (2). An air inlet pipe (3) and an overflow / drain pipe (4) are provided on the cover (2). The lower end pipe orifice of the air inlet pipe (3) is below the liquid in the tank body (1), and the lower end pipe orifice of the overflow / drain pipe (4) is above the liquid in the tank body (1). A water replenishing pipe (5) is provided at the upper end of the tank body (1), and a water replenishing solenoid valve (51) is provided on the water replenishing pipe (5). A drain pipe (6) is provided at the lower end of the tank body (1), and a drain solenoid valve (61) is provided on the drain pipe (6). A "C"-shaped liquid level gauge (7) is provided on the side wall of the tank body (1). The upper end of the liquid level gauge (7) is communicated with the upper end of the tank body (1), and the lower end of the liquid level gauge (7) is communicated with the lower end of the tank body (1). A micro-pressure sensor (8) is provided at the bottom of the liquid level gauge (7).

2. The intelligent biogas water seal device according to claim 1, characterized in that The lower end pipe orifice of the air inlet pipe (3) is a circular perforated pipe with multiple holes.

3. The intelligent biogas water seal device according to claim 2, characterized in that The aperture of the round holes on the perforated pipe is 3-5 mm, and the distance between adjacent round holes is 1-3 mm.

4. The intelligent biogas water seal device according to claim 1, characterized in that The liquid level gauge (7) is a transparent glass tube.

5. The intelligent biogas water seal device according to claim 1, characterized in that The micro-pressure sensor (8), the water replenishing solenoid valve (51) and the drain solenoid valve (61) are all connected to an external PLC controller.

6. The intelligent biogas water seal device according to claim 1, characterized in that The air inlet pipe (3), the overflow / drain pipe (4), the water replenishing pipe (5) and the drain pipe (6) are made of 304 stainless steel.

Images