CN201276573Y - Temperature control device of marsh gas generator - Google Patents

Abstract

A biogas generator temperature control device, using solar energy to heat and heat the biogas generator to realize anaerobic fermentation of the biogas generator under relatively high temperature and stable conditions. The biogas generator is installed in a glass solar greenhouse to utilize the greenhouse effect To maintain a high ambient temperature of the biogas generator, paste insulation materials on the outside of the biogas generator to reduce heat loss in the biogas generator, and coat light-absorbing powder on the outer surface of the insulation material to increase the absorption of solar energy. A solar heat concentrating device is installed on the biogas generator, and the material liquid in the biogas generator is heated by using the solar heat energy collected by the solar heat concentrating device.

Description

A biogas generator temperature control device

technical field

The utility model relates to a temperature control device for a biogas generator, in particular, it utilizes solar energy to heat up and keep warm the biogas generator, so as to realize anaerobic fermentation of the biogas generator under relatively high temperature and stable conditions.

Background technique

Biogas is produced by microbial fermentation under anaerobic conditions using human and livestock manure, crop straw, agricultural product processing waste, and domestic garbage. Biogas is a clean, renewable bioenergy that can be used for cooking, power generation, heating, lighting, and more. It can not only save a lot of fossil energy, but also transform and utilize a lot of domestic waste and agricultural product waste, reducing environmental pollution.

In the process of fermentation to generate biogas, not only strict anaerobic conditions are required, but also the fermenter needs to maintain a certain temperature. In the cold season in northern and southern parts of my country, due to the low temperature of the biogas tank, the production of biogas almost stops, so it is difficult to ensure the stable use of biogas. In the industrial biogas process, in order to improve the processing efficiency and gas production rate per unit volume of the biogas generator, it is necessary to ensure that the generator is maintained at a relatively high temperature. In the current published patents, most of the solar biogas generators are small reactors. Since there is no temperature stabilization control device and auxiliary heating device, it is difficult to ensure that the biogas generator is stable at a high temperature for a long time.

Utility model content

In view of this, the technical problem to be solved by this utility model is to provide a biogas generator temperature control device, which uses solar energy to heat the feed liquid in the biogas generator, and uses the heat generated by the biogas boiler to assist heating, so that the biogas generator The temperature in the medium is maintained at a higher temperature.

The technical solution adopted to solve the above problems is: a biogas generator temperature control device, which includes: a biogas generator, a solar heat collector, a biogas boiler, a heat storage tank, a heat exchange tube, a temperature sensor, a temperature controller, an electromagnetic valve, a solar greenhouse, a heat exchanger and a temperature sensor are arranged inside the biogas generator, and the solar greenhouse cover is arranged on the biogas generator, the temperature controller and the heat storage tank, and the heat storage tank The solar heat collector is connected externally through the solar greenhouse through the pipeline, the biogas generator is connected with the biogas storage tank externally through the solar greenhouse through the pipeline, and an interface of the heat exchanger passes through the biogas generator through the pipeline A number of solenoid valves are externally connected, and the tap water pipes, heat storage tanks and biogas boilers are respectively connected through the solenoid valves. The other interface of the heat exchanger passes through the biogas generator through a pipeline and is externally connected with solenoid valves and circulation pumps. The solenoid valve is connected to the tap water pipe, the circulation pump is connected to several solenoid valves, and the heat storage tank and the biogas boiler are connected through the solenoid valves; the temperature sensor is connected to the biogas generator externally There is a temperature controller, and the temperature controller is also electrically connected to an AC contactor, and the AC contactors are respectively electrically connected to the corresponding solenoid valves.

The outer surface of the biogas generator is covered with an insulating layer, the outer side of the insulating layer is coated with a light-absorbing layer, the insulating layer is made of insulating material, and the light-absorbing layer is light-absorbing powder.

The beneficial effects obtained by adopting the above technical scheme are: (1) The circulation of hot water and tap water is controlled by the temperature controller, solenoid valve, and circulation pump, so that the biogas generator can stably maintain a higher fermentation temperature and improve the efficiency of the biogas generator. Work efficiency; (2) Most of the heat energy needed to maintain the temperature comes from solar energy, and does not need coal and electricity, etc., and has the characteristics of environmental protection.

Description of drawings

Fig. 1 is the structural representation of a kind of biogas generator temperature control device of the present utility model;

Fig. 2 is a schematic wiring diagram of a biogas generator temperature control device of the present invention.

Detailed ways

The specific embodiments of the present utility model will be described in further detail below in conjunction with the accompanying drawings.

Referring to Figure 1, the solar greenhouse 2 is assembled from transparent glass, and its function is to absorb sunlight energy, maintain a higher temperature in the greenhouse, and reduce the heat loss in the biogas generator 1. The outer surface of the biogas generator 1 is covered with thermal insulation materials The insulating layer 17 made, the outside of the insulating layer 17 is coated with a light-absorbing layer 18, the light-absorbing layer 18 is a light-absorbing powder, and its effect is to absorb sunlight to increase the temperature of the insulating layer and reduce the loss of heat in the biogas generator 1. The solar heat collector 4 is installed outside the solar greenhouse 2, and its effect is to gather solar energy and convert it into thermal energy. The thermal energy gathered by the solar thermal concentrator 4 is transported to the thermal storage pool 3 through pipelines, and the thermal storage pool 3 plays a role of storing thermal energy. Under the condition that the solar thermal concentrator 4 cannot work on cloudy or rainy days for several consecutive days, the biogas generator 1 is heated by the thermal energy in the thermal storage tank 3 . The heat exchanger 6 of the biogas generator 1 is placed inside the biogas generator 1, and one of the interfaces is respectively connected with the solenoid valve 9, the solenoid valve 10, and the solenoid valve 11, wherein the solenoid valve 9 is connected with the tap water outlet 20, and the solenoid valve 10 is connected with the storage tank. The hot water outlet of the heat pool 3 is connected, and the solenoid valve 11 is connected with the hot water outlet of the biogas boiler 5; the other port of the heat exchanger 6 is connected with the solenoid valve 12, solenoid valve 13, and solenoid valve 14 respectively, and the solenoid valve 12 is connected with the tap water The inlet 21 is connected, the solenoid valve 13 is connected with the hot water inlet of the regenerator 3 , and the solenoid valve 14 is connected with the hot water inlet of the biogas boiler 5 . The temperature sensor 7 is sealed and inserted into the biogas generator 1, and the temperature controller 8 is connected to the temperature sensor 7 and the AC contactor 16 respectively through cables. As shown in Fig. 2, the AC contactor 16 controls the solenoid valve 9 and the solenoid valve 10 respectively through cables , Solenoid valve 11, Solenoid valve 12, Solenoid valve 13, Solenoid valve 14 and circulation pump 15 working state. The temperature control principle of the biogas generator 1 is: the temperature controller 8 receives the temperature signal from the temperature sensor 7, when the temperature is lower than the set value, the temperature controller 8 sends an instruction to the AC contactor 16, and the AC contactor 16 Control solenoid valves, wherein solenoid valve 9, solenoid valve 11, solenoid valve 12, solenoid valve 14 are in closed state, solenoid valve 10, solenoid valve 13 are in open state, circulation pump 15 is in working state, and heat energy in heat storage tank 3 The water is transferred to the biogas generator 1 to increase the temperature of the feed liquid in the biogas tank. In continuous rainy weather, when the thermal energy of the heat storage tank 3 is exhausted, the biogas boiler 5 can be started, and the biogas boiler 5 can assist in providing thermal energy. At this time, change the setting of the temperature controller 8, the solenoid valve 9, the solenoid valve 10, and the solenoid valve. 12. The solenoid valve 13 is in the closed state, while the solenoid valve 11 and the solenoid valve 14 are in the open state, and the circulation pump 15 is in the working state. At this time, the heat energy of the biogas boiler 5 is transferred to the biogas generator 1 through water, and the biogas generator 1. The feed liquid in 1 is heated. In the midsummer season, the temperature in the biogas generator 1 may be higher than the set temperature. At this time, the temperature controller 8 sends an instruction, the solenoid valve 10, the solenoid valve 11, the solenoid valve 13, and the solenoid valve 14 are closed, and the circulating pump 15 stops working. The solenoid valve 9 and the solenoid valve 12 are opened, and the pressure of the tap water makes the tap water pass through the heat exchanger 6 to transfer the heat in the biogas generator 1 , thereby reducing the temperature of the biogas generator 1 . The insulation layer 17 covered on the outside of the biogas generator 1 has the effect of heat preservation, and the solar greenhouse 2 also plays the role of heat accumulation and heat preservation, especially in the case of low external temperature in winter, it can reduce the load of the solar heat collector 4 and the biogas boiler 5, Improve system stability.

Claims (2)

1, a kind of biogas generator temperature-control device, it comprises: biogas generator, solar energy collectors, methane boiler, the accumulation of heat pond, heat exchanger tube, temperature sensor, temperature regulator, magnetic valve, heliogreenhouse, described biogas generator inside is provided with heat exchanger and temperature sensor, described heliogreenhouse is located at described biogas generator, on described temperature regulator and the described accumulation of heat pond, described accumulation of heat pond is passed described heliogreenhouse by pipeline and is circumscribed with solar energy collectors, described biogas generator passes described heliogreenhouse by pipeline and is circumscribed with the biogas storage tank, it is characterized in that, interface of described heat exchanger passes described biogas generator by pipeline and is circumscribed with some magnetic valves, and be connected with running water pipe by described magnetic valve respectively, accumulation of heat pond and methane boiler, another interface of described heat exchanger passes described biogas generator by pipeline and is circumscribed with magnetic valve and recycle pump, described magnetic valve connects running water pipe, described recycle pump is connected with some magnetic valves, and is connected with described accumulation of heat pond and described methane boiler by described magnetic valve; Described temperature sensor passes described biogas generator dispatch from foreign news agency and is connected to temperature regulator, and described temperature regulator also is electrically connected with alternating current contactor, and described alternating current contactor is electrically connected described each self-corresponding magnetic valve respectively.

2, biogas generator temperature-control device according to claim 1 is characterized in that, described biogas generator outside surface is coated with thermal insulation layer, and the described thermal insulation layer outside scribbles light-absorption layer; Described thermal insulation layer is that lagging material is made, and described light-absorption layer is the extinction powder.

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