CN203498379U - Intelligent biogas digester - Google Patents

Abstract

The utility model provides an intelligent biogas digester, and belongs to the technical field of biogas. The problems that the temperature, pressure and biogas slurry amount in the biogas digester in the prior art cannot be automatically adjusted are solved. A conveyer pipe for conveying biogas is fixed on the biogas digester, the other end of the conveyer pipe is connected with a biogas collecting tank, the biogas digester is characterized in that a heating device capable of heating the biogas digester, a feeding device capable of feeding for the biogas digester and a pressure relief device capable of reducing pressure in the biogas digester are arranged in the biogas digester, and a temperature sensor, a pressure sensor and a liquid level sensor are arranged in the biogas digester, and connected with a PLC (programmable logic controller). The temperature, pressure and the biogas amount in the biogas digester can be automatically controlled.

Description

An intelligent biogas pond

technical field

The utility model belongs to the technical field of biogas, and relates to a biogas pit, in particular to an intelligent biogas pit.

Background technique

With the development of the economy, energy has become an important guarantee for the sustainable development of the economy. At present, people's excessive use of non-renewable resources has made all countries face a severe test of energy issues. Biogas is a kind of clean energy in the rural areas of our country. It is produced by fermenting various organic matter such as human and animal manure, straw, and sewage in a closed biogas digester under anaerobic (no oxygen) conditions. It can be used for boiling water, cooking and cooking, etc. It can save a lot of non-renewable resources such as coal and wood for human beings, and the burned biogas will not pollute the environment, and has high thermal efficiency.

In the prior art, biogas is usually produced by specialized biogas digesters. However, the biogas production of biogas digesters is usually subject to certain restrictions, for example, it will affect the production of biogas with seasonal and diurnal temperature changes. Under normal circumstances, when the temperature in the biogas digester is greater than 15°, the biogas can be produced normally; and when the temperature in the biogas digester is lower than 15°, the biogas production rate is very low, or even no longer produces biogas, so it must be ensured The temperature in the digester is suitable.

In the biogas digester, the biogas pressure in the biogas digester will have a certain impact on the safe production of the biogas digester. When the pressure of the biogas in the biogas digester is too high, the vault of the biogas digester may burst due to the biogas, and may also cause gas leakage from the movable cover of the skylight of the biogas digester. Therefore, stabilizing the pressure in the biogas digester plays a very important role in the normal production and operation of the biogas digester.

The raw materials in the biogas digester also affect the production of biogas, so in the process of biogas production, it is necessary to ensure that there is a continuous supply of biogas raw materials in the biogas digester.

Therefore, in the process of biogas production, it is necessary to monitor the various parameters in the biogas tank frequently, so as to adjust the temperature parameters, pressure parameters and the amount of feed, so that the raw materials can be fully fermented to keep the gas production at a high level. At present, in the large and medium-sized biogas projects that have been built or are under construction in my country, most of them use commercial computers or industrial computers to monitor and record various technical parameters in biogas production. Because the operation of the computer has relatively high requirements for the operator, and the operator needs to have computer knowledge, so for the rural areas of our country, the lack of such equipment has greatly reduced the safety and reliability of biogas.

Because the existing biogas digesters have the disadvantages of not being able to automatically adjust the temperature parameters, pressure parameters and feeding quantities in the biogas digesters, those skilled in the art still need to develop or improve the existing biogas digesters to Solving the above-mentioned deficiencies in the existing biogas digesters, so as to ensure the safe production of biogas digesters, can also increase the production of biogas, provide more clean energy for human beings, and rapidly promote the sustainable development of the economy.

Contents of the invention

The purpose of the utility model is to solve the above-mentioned problems in the existing technology, and propose an intelligent biogas digester. The intelligent biogas digester has the characteristics of being able to stabilize the temperature, pressure and biogas liquor volume in the biogas digester.

The purpose of this utility model can be achieved through the following technical solutions: an intelligent biogas tank, on which a delivery pipe capable of transporting biogas is fixed, and the other end of the delivery pipe is connected with a biogas collection tank, which is characterized in that , the biogas tank is provided with a heating device capable of heating the biogas tank, the heating device includes an electric heating tube fixed on the wall of the pool, the electric heating tube is connected to the power supply through a line, and the line There is a toggle switch that can cut off or connect the power supply; the biogas digester is provided with a feeding device that can feed the biogas digester, and the feeding device includes a feed port and a feed port that are opened on the wall of the pool. connected feed hopper, the feed port is provided with a valve that can open or close the feed port; the biogas digester is also provided with a pressure relief device that can decompress the biogas digester, and the pressure release The device includes a buffer tank, the buffer tank is connected to the delivery pipe through the delivery branch pipe, and the solenoid valve that can cut off or communicate with the delivery branch pipe is provided on the delivery branch pipe; the biogas pool is also equipped with a temperature sensor, Pressure sensor and liquid level sensor, and described temperature sensor, pressure sensor and liquid level sensor all link to each other with a PLC programmable controller, described PLC programmable controller is also respectively connected with described toggle switch, valve and The solenoid valves are connected by lines.

The working principle of this smart biogas digester is as follows: the temperature sensor in the biogas digester can always sense the temperature of the biogas slurry in the biogas digester, and when the temperature sensor senses that the temperature of the biogas slurry in the biogas digester is too low, it will transmit the information To the PLC programmable controller, the PLC programmable controller gets the information and orders the toggle switch between the electric heating tube and the power supply to close, so that the electric heating tube is energized to heat the biogas digester, thereby increasing the temperature in the biogas digester , and finally improve the efficiency of biogas production; the pressure sensor in the biogas digester can sense the pressure of the biogas in the digester at all times, and when the pressure sensor senses that the pressure of the biogas in the digester is too high, it will transmit the information to the PLC programmable The controller, PLC programmable controller gets the information and commands the solenoid valve on the delivery branch to open, so that the delivery pipe and the buffer tank are connected through the delivery branch, and then the biogas in the biogas digester will flow into the buffer tank along the delivery branch In the process, the pressure of the biogas in the biogas digester is reduced, which ensures the safety and reliability of the biogas digester; the liquid level sensor in the biogas digester can always sense the liquid level of the biogas liquid in the biogas digester, when the liquid level sensor senses When the liquid level of the biogas slurry in the biogas digester is too low, the information will be transmitted to the PLC programmable controller, and the PLC programmable controller will get the information and order the valve in the feed inlet to open, and add biogas slurry to the biogas digester through the feed hopper. Ensure that the amount of biogas slurry in the biogas digester is stable, so that the biogas digester can continuously produce biogas.

In the above intelligent biogas digester, one end of the conveying pipe communicates with the biogas digester, and a sealing ring is fixed between the conveying pipe and the biogas digester. The sealing ring can ensure the tightness between the delivery pipe and the biogas tank, so that the biogas in the biogas tank will not leak out, and at the same time, the sealing performance of the biogas tank is good, ensuring a better anaerobic environment.

In the above intelligent biogas digester, the electric heating tube is fixed on the inner wall of the biogas digester through the lamp tube installation seat.

In the above intelligent biogas digester, the biogas collection tank and the buffer tank are both made of steel.

In the above intelligent biogas digester, the conveying pipes and the conveying branch pipes are all made of steel materials.

Compared with the existing technology, this intelligent biogas digester has the following advantages:

1. The utility model can sense the temperature in the biogas pond at all times by setting a temperature sensor in the biogas pond, so as to ensure that the temperature in the biogas pond will not be too low by controlling the opening and closing of the electric heating tube, so that the temperature in the biogas pond can be maintained at all times. The temperature at which biogas is normally produced makes the biogas slurry more conducive to fermentation and ensures the production of biogas.

2. The utility model can sense the pressure in the biogas digester at all times by installing a pressure sensor in the biogas digester. When the pressure in the biogas digester is too high, the biogas flow in the biogas digester will flow to the buffer tank to decompress the biogas digester, thereby stabilizing The pressure in the biogas digester will not cause a safety failure of the biogas digester due to excessive pressure in the biogas digester and affect the production of biogas.

3. The utility model can sense the liquid level of the biogas liquid at all times by setting a liquid level sensor in the biogas pit, and by controlling the feeding hopper to input the biogas liquid into the biogas pit, it can stabilize the amount of biogas liquor in the biogas pit and ensure that the biogas pit does not The production of biogas will stop due to lack of raw materials.

4. The utility model has high intelligence, high working efficiency, good safety and reliability.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure, 1. biogas digester; 2. conveying pipe; 3. biogas collecting tank; 4. electric heating pipe; 5. feeding hopper; 6. buffer tank; 7. conveying branch pipe.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Figure 1, a biogas digester includes a delivery pipe 2 that can transport biogas in the biogas digester 1, one end of the delivery pipe 2 communicates with the biogas digester 1, and there is a fixed pipe between the delivery pipe 2 and the biogas digester 1 A sealing ring, the other end of the delivery pipe 2 communicates with a biogas collection tank 3 . The sealing ring can ensure the tightness between the delivery pipe 2 and the biogas digester 1, so that the biogas in the biogas digester 1 will not leak out, and at the same time, the sealing performance of the biogas digester 1 is good, ensuring a better anaerobic environment. In this embodiment, the biogas digester 1 is further provided with a heating device capable of heating the biogas digester 1 , a pressure relief device capable of decompressing the biogas digester 1 , and a feeding device capable of feeding the biogas digester 1 .

The heating device includes an electric heating tube 4 fixed on the pool wall, the electric heating tube 4 is fixed on the pool wall of the biogas digester 1 through the lamp tube mount, and the electric heating tube 4 can provide electric energy for the electric heating tube 4 through a circuit and a The power supply is connected, the circuit is provided with a toggle switch that can cut off or connect the power supply, by controlling the opening and closing of the toggle switch, the electric heating tube 4 can be controlled to be energized or powered off.

The pressure relief device includes a buffer tank 6. The buffer tank 6 communicates with the delivery pipe 2 through the delivery branch pipe 7, and the delivery branch pipe 7 is provided with a solenoid valve that can cut off or communicate with the delivery branch pipe 7. By controlling the delivery branch pipe 7 and the delivery pipe 2 to disconnect By opening and communicating, it is possible to control whether the biogas in the biogas tank 1 flows to the buffer tank 6, thereby reducing the pressure of the biogas tank 1.

The feeding device includes a feeding port opened on the wall of the pond and a feeding hopper 5 connected to the feeding port. The feeding hopper 5 contains enough biogas liquid for feeding into the biogas digester 1. The feeding port is provided with a Or close the valve of the feed inlet, and control whether to add biogas slurry to the biogas digester 1 by controlling the opening or closing of the valve.

In this embodiment, the biogas collection tank 3 and the buffer tank 6 are both made of steel, and the delivery pipe 2 and the delivery branch 7 are both made of steel.

The working principle of this intelligent biogas digester is as follows: the temperature sensor in the biogas digester 1 can sense the temperature of the biogas slurry in the biogas digester 1 at all times. When the temperature sensor senses that the temperature of the biogas slurry in the biogas digester 1 is too low, it will The information will be transmitted to the PLC programmable controller, and the PLC programmable controller will get the information and order the toggle switch between the electric heating tube 4 and the power supply to close, so that the electric heating tube 4 will be energized to heat the biogas pool 1 , so as to increase the temperature in the biogas digester 1, and finally improve the gas production efficiency of the biogas; When the pressure is too high, the information will be transmitted to the PLC programmable controller, and the PLC programmable controller will get the information and order the solenoid valve located on the conveying branch pipe 7 to open, so that the conveying pipe 2 and the buffer tank 6 are connected through the conveying branch pipe 7 At this time, the biogas in the biogas digester 1 will flow into the buffer tank 6 along the delivery branch pipe 7, which reduces the pressure of the biogas in the biogas digester 1 and ensures the safety and reliability of the biogas digester 1; The liquid level sensor in the biogas digester 1 can sense the liquid level of the biogas liquid in the biogas digester 1 at all times. When the liquid level sensor senses that the liquid level of the biogas liquid in the biogas digester 1 is too low, it will transmit the information to the PLC programmable controller , the PLC programmable controller gets the information and commands the valve in the feed port to open, and adds biogas slurry to the biogas digester 1 through the feed hopper 5 to ensure the stability of the biogas slurry in the biogas digester 1, so that the biogas digester 1 can continuously Generate biogas.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although this article uses many terms such as 1. biogas digester; 2. delivery pipe; 3. biogas collection tank; 4. electric heating pipe; 5. feed hopper; 6. buffer tank; The possibility of using other terms is excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

Claims (5)

1. An intelligent biogas digester, the biogas digester (1) is fixed with a delivery pipe (2) capable of transporting biogas, and the other end of the delivery pipe (2) is connected to a biogas collection tank (3), which It is characterized in that the biogas digester (1) is provided with a heating device capable of heating the biogas digester (1), and the heating device includes an electric heating tube (4) fixed on the wall of the pond, and the electric heating The pipe (4) is connected to the power supply through a circuit, and the circuit is provided with a toggle switch capable of cutting off or connecting the power supply; the biogas digester (1) is provided with a feeding device capable of feeding device, the feeding device includes a feed port opened on the wall of the pool and a feed hopper (5) connected to the feed port, and the feed port is provided with a valve capable of opening or closing the feed port; The biogas digester (1) is also provided with a pressure relief device capable of decompressing the biogas digester (1). The pressure relief device includes a buffer tank (6), and the buffer tank (6) is transported The branch pipe (7) is connected with the conveying pipe (2), and the conveying branch pipe (7) is provided with a solenoid valve capable of cutting off or connecting the conveying branch pipe (7); There are temperature sensor, pressure sensor and liquid level sensor, and described temperature sensor, pressure sensor and liquid level sensor are all connected with a PLC programmable controller, and described PLC programmable controller is also respectively connected with described toggle Switches, valves and solenoid valves are connected by lines. 2. The intelligent biogas digester according to claim 1, characterized in that, one end of the delivery pipe (2) communicates with the biogas digester (1), and between the delivery pipe (2) and the biogas digester (1) Fixed with sealing ring. 3. The intelligent biogas digester according to claim 1, characterized in that, the electric heating tube (4) is fixed on the inner wall of the biogas digester (1) through a lamp tube mounting seat. 4. The intelligent biogas digester according to claim 1, 2 or 3, characterized in that, the biogas collection tank (3) and buffer tank (6) are both made of steel. 5. The intelligent biogas digester according to claim 1, 2 or 3, characterized in that, the conveying pipe (2) and the conveying branch pipe (7) are both made of steel.

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