CN212864755U

CN212864755U - Anaerobic fermentation tank with integrated steel roof and cement tank body

Info

Publication number: CN212864755U
Application number: CN202021046834.3U
Authority: CN
Inventors: 严建军; 付伟; 张博; 李佳; 迟海
Original assignee: Shenzhen Derun Biomass Engineering Co ltd
Current assignee: Shenzhen Derun Biomass Engineering Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-04-02
Anticipated expiration: 2030-06-09

Abstract

The utility model provides an anaerobic fermentation tank with integrated steel roof and cement tank, which relates to the construction field of biogas engineering construction, and comprises a steel roof and a cement tank, wherein the steel roof is fixed at the top of the cement tank through welding and sealing, the steel roof comprises a steel beam and a steel plate laid on the steel beam, and the outer side of the steel plate is provided with an extruded polystyrene board layer; the cement tank body comprises a reinforced concrete layer and an extruded polystyrene board layer which is arranged on the outer side of the reinforced concrete layer and used for heat preservation. The utility model provides a pair of anaerobic fermentation tank of steel top and cement jar body integration, lateral wall and diapire intensity are high, can bear the high strength stirring, and watertight and gas tightness are strong, and it is effectual to keep warm.

Description

Anaerobic fermentation tank with integrated steel roof and cement tank body

Technical Field

The utility model relates to a marsh gas engineering construction field especially relates to an anaerobic fermentation tank of steel top and the integration of cement jar body.

Background

At present, along with the gradual importance of the national work of harmless and resource utilization of agricultural and forestry wastes (straws, livestock and poultry manure and the like), the biogas anaerobic fermentation engineering meets the rapid development period. In the implementation process of the biogas project, the design selection of the tank body plays a critical role.

The existing tank body form in China often has the following problems: the tank body is difficult to bear high-strength stirring, so that a series of problems of material floating, crusting and the like under the low-strength stirring condition are caused; the fermentation tank cannot meet the heat preservation requirement in winter in high latitude areas, and normal production and operation are difficult to realize under the low-temperature condition; and the construction period of the tank body is long, and the project income is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art to a steel top and the anaerobic fermentation jar of the integration of the cement jar body are provided, and lateral wall and diapire intensity are high, can bear the high strength stirring, and watertight and gas tightness are strong, and it is effectual to keep warm.

In order to achieve the purpose, the utility model provides an anaerobic fermentation tank with an integrated steel roof and a cement tank body, which comprises the steel roof and the cement tank body, wherein the steel roof is fixed on the top of the cement tank body in a welding and sealing manner, the steel roof comprises a steel beam and a steel plate laid on the steel beam, and the outer side of the steel plate is provided with an extruded polystyrene plate layer; the cement tank body includes lateral wall and diapire, lateral wall and diapire all include reinforced concrete layer and set up the extrusion molding polystyrene board layer that is used for heat preservation in the reinforced concrete layer outside.

Further, the side wall comprises an upper section and a lower section, the lower section and the bottom wall are embedded into a soil layer, a stainless steel plate layer is arranged on the inner side of a reinforced concrete layer at the joint of the upper section and the steel roof, a first color steel plate layer is arranged on the outer side of an extruded polystyrene plate layer of the upper section, a brick mould layer is arranged on the outer side of the extruded polystyrene plate layer of the lower section, and a cement mortar layer is arranged on the outer side of the brick mould layer.

Further, a plain concrete cushion layer is arranged on the outer side of the extruded polystyrene board layer of the bottom wall.

Further, the outer side of the extruded polystyrene board layer on the steel roof is provided with a fine stone concrete layer.

Further, the edge of the steel top is provided with a protective railing.

Further, the extruded polystyrene board layer comprises a first layer and a second layer, and the splicing seams of the first layer and the splicing seams of the second layer are staggered from each other by a distance not less than 500 mm.

Further, the extrusion molding polyphenyl plate layer outside of lateral wall is provided with a plurality of vertical band irons along circumference equidistance interval the outside adapter sleeve of vertical band iron is equipped with the hoop band iron to be provided with the various steel sheet layer of second in the extrusion molding polyphenyl plate layer outside of lateral wall.

The utility model provides a pair of anaerobic fermentation tank of steel roof and the integration of the cement jar body, the main material of steel roof is the steel, and the main material of the cement jar body is reinforced concrete, has guaranteed the intensity of whole fermentation cylinder to satisfy the required fermentation cylinder intensity of high strength stirring, the integration is pour, has guaranteed the watertight and the gas tightness of the cement jar body, guarantees the fermentation quality. And the extruded polystyrene board layers are arranged on the outer sides of the steel plates and the reinforced concrete and are used for heat preservation, the temperature inside the fermentation tank is maintained, and the production requirements of heat preservation and operation in winter in high latitude areas are met.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following provides a detailed description of the present invention with reference to the embodiments of the present invention and the accompanying drawings.

FIG. 1 is a sectional view of the present invention;

FIG. 2 is a schematic view of the layer structure of the steel roof of the present invention;

FIG. 3 is a schematic diagram of the floor structure of the upper section of the middle side wall of the present invention;

FIG. 4 is a schematic view of the layer structure of the lower section of the middle sidewall of the present invention;

FIG. 5 is a schematic view of the layer structure of the middle bottom wall of the present invention;

figure 6 is the utility model discloses well lateral wall's extrusion molding polystyrene board layer structure sketch map.

The reference numerals in the drawings are explained below.

100. Steel top; 110. a steel beam; 120. a steel plate; 130. a guard rail; 200. a cement tank body; 210. a side wall; 211. an above ground segment; 212. a lower ground segment; 220. a bottom wall; 300. a reinforced concrete layer; 400. extruding a polystyrene board layer; 410. a first layer; 420. a second layer; 430. vertical flat iron; 440. annular flat iron; 510. a first color steel plate layer; 520. a second color steel plate layer; 610. brick mould layer; 620. a cement mortar layer; 700. a plain concrete cushion layer; 800. a fine stone concrete layer; 910. splicing seams of the first layer; 920. the splicing seam of the second layer.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "front", "upper", "lower", "left", "right", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 6, the anaerobic fermentation tank with the integrated steel roof and cement tank comprises a fixed cement tank 200, a steel roof 100 is fixed on the top of the cement tank 200 by welding and sealing, and the middle part of the steel roof 100 is embedded into the cement tank 200. The steel roof 100 includes steel plates 120 of the steel beams 110 laid on the steel beams 110, and an extruded polystyrene board layer 400 is provided on the outer sides of the steel plates 120. The cement silo 200 includes a sidewall 210 and a bottom wall 220, and the sidewall 210 and the bottom wall 220 each include a reinforced concrete layer 300 and an extruded polystyrene board layer 400 for thermal insulation disposed outside the reinforced concrete layer 300.

In this embodiment, the main material of the steel roof 100 is steel, and the main material of the cement tank 200 is reinforced concrete, so that the strength of the whole fermentation tank is ensured, the fermentation tank strength required by high-strength stirring is met, the integral pouring is performed, the water tightness and the air tightness of the cement tank 200 are ensured, and the fermentation quality is ensured. And the extruded polystyrene board layer 400 is arranged on the outer sides of the steel plate 120 and the reinforced concrete for heat preservation, the temperature inside the fermentation tank is maintained, and the production requirements of heat preservation and operation in winter in high latitude areas are met.

The cement can 200 includes a sidewall 210 and a bottom wall 220 provided at a lower end of the sidewall 210 to seal a lower end opening of the sidewall 210. The fermentation cylinder that this embodiment provided is bulky, is fit for on-the-spot watering and installation to for the stability of installation, the lower extreme of fermentation cylinder is inserted in the soil layer, increases the stability of installation. The side wall 210 of the cement tank 200 is divided into an upper section 211 and a lower section 212, the lower section 212 being the part of the side wall 210 inserted into the soil layer, it being understood that the bottom wall 220 is also in the soil layer and is located at the lowest part of the soil pit, and the upper section 211 being the part of the side wall 210 exposed on the ground. Due to the difference in external environment, the material structure of the upper ground section 211 and the lower ground section 212 may also be different. The reinforced concrete layer 300 and the extruded polystyrene board layer 400 are identical as described above. The first color steel plate layer 120 is arranged on the outer side of the extruded polystyrene board layer 400 of the upper section 211, the brick mold layer 610 is arranged on the outer side of the extruded polystyrene board layer 400 of the lower section 212, and the cement mortar layer 620 is arranged on the outer side of the brick mold layer 610.

In particular, the thickness of the side wall 210, the bottom wall 220 and the steel roof 100 depends on the size of the fermenter, and the larger the fermenter is, the greater these wall thicknesses should be, and in this embodiment, the height of the side wall 210 of the fermenter is about 8.5m and the inside diameter of the fermenter is about 28.5 m. The lower section 212 is located in the soil layer and is subjected to a greater lateral force, so that the overall wall thickness of the lower section 212 is greater than that of the upper section 211, and the depth of the lower section 212 is about 1.8m and the height of the upper section 211 is about 6.7 m. The reinforced concrete layer 300 was made of C35 concrete and had a thickness of 40mm and the extruded polystyrene board layer 400 of 80 mm. In the upper section 211, the thickness of the first color steel plate 120 is only 0.5mm, while in the lower section 212, the thickness of the brick film layer is 180mm, and the thickness of the cement mortar layer 620 is 20mm, so that the lower section 212 can bear larger lateral force.

Before the main body of the fermentation tank is irrigated, a foundation pit needs to be dug in a soil layer, a slope is required to be placed for excavation and the foundation pit is timely supported during excavation of the foundation pit, and precipitation work around the foundation pit is well done. After the foundation pit is excavated, a soil layer with the thickness of about 150mm needs to be reserved for manual excavation so as to avoid disturbance of mechanical excavation on the soil layer and influence on the bearing capacity of the foundation. The excavation depth of the bottom of the foundation pit is larger than the embedding depth of the underground section 212, then the foundation pit is backfilled and tamped by plain soil, the foundation pit is backfilled by round gravel or sandy soil, and multiple layers of backfilling are carried out, wherein the thickness of each layer of backfilling is not larger than 300 mm.

The bottom wall 220 is part of the cement tank 200 so the bottom wall 220 also includes a layer of reinforced concrete 300 and an extruded polystyrene board layer 400 and is of the thickness described above. A plain concrete cushion 700, which is pure concrete, C15 concrete and has a thickness of 100mm, is provided on the lower side of the extruded polystyrene board layer 400 of the bottom wall 220. The lower part of the plain concrete cushion layer 700 is the tamped filling soil filled back into the foundation pit.

The connection of the upper section 211 and the steel roof 100 is provided with 120 layers of stainless steel plates, and the 120 layers of stainless steel plates are positioned on the inner side of the reinforced concrete layer 300 and belong to the innermost layer of the side wall 210. The thickness of the layer 120 of stainless steel plate was 2 mm.

The fine stone concrete layer 800 is provided on the outer side of the extruded polystyrene board layer 400 on the steel roof 100 to reinforce the strength and the heat preservation effect of the steel roof 100. Specifically, the fine stone concrete layer 800 is made of C20 concrete and has a thickness of 50 mm.

The protective rail 130 is arranged on the uppermost side of the steel roof 100, namely the edge of the fine stone concrete layer 800, so as to protect the personal safety of workers acting on the upper side. The fermentation cylinder is high, and the outside at the lateral wall 210 of fermentation cylinder is provided with the cat ladder, and this cat ladder is stainless steel.

The extruded polystyrene board layer 400 in this embodiment includes a first layer 410 and a second layer 420, and each of the first layer 410 and the second layer 420 is 40 mm. The extruded polystyrene board layer 400 is made of extruded board material, and the volume of the fermentation tank is larger in this embodiment, so the area of the required extruded board is larger, and the extruded boards of the first layer 410 and the second layer 420 are formed by splicing a plurality of extruded boards. To enhance the insulation of the extruded polystyrene sheet layer 400, the distance between the splice 910 between the first layers 410 and the splice 920 between the second layers 420 is not less than 500 mm.

The outside of the extruded polystyrene board layer 400 of the side wall 210 is provided with a plurality of vertical flat irons 430 at equal intervals along the circumferential direction, a plurality of annular flat irons 440 are fastened and sleeved on the outside of the vertical flat irons 430, the annular flat irons 440 are arranged along the circumferential direction of the fermentation tank, and a closed ring is formed after the extruded polystyrene board layer 400 is tightly held. Increasing the mounting stability of the extruded polystyrene board layer 400. The outer side of the extruded polystyrene board layer 400 is provided with a second color steel plate 120 layer, and the vertical flat iron 430 and the annular flat iron 440 are accommodated in a groove formed in the inner side of the second color steel plate 120 layer.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The anaerobic fermentation tank with the integrated steel roof and the cement tank body is characterized by comprising the steel roof and the cement tank body, wherein the steel roof is fixed on the top of the cement tank body in a sealing mode through welding, the steel roof comprises a steel beam and a steel plate paved on the steel beam, and an extruded polystyrene plate layer is arranged on the outer side of the steel plate; the cement tank body includes lateral wall and diapire, lateral wall and diapire all include reinforced concrete layer and set up the extrusion molding polystyrene board layer that is used for heat preservation in the reinforced concrete layer outside.

2. The anaerobic fermentation tank with the integrated steel roof and cement tank body as claimed in claim 1, wherein the side wall comprises an upper section and a lower section, the lower section and the bottom wall are buried in the soil layer, a stainless steel plate layer is arranged on the inner side of the reinforced concrete layer at the joint of the upper section and the steel roof, a first color steel plate layer is arranged on the outer side of the extruded polystyrene plate layer of the upper section, a brick mold layer is arranged on the outer side of the extruded polystyrene plate layer of the lower section, and a cement mortar layer is arranged on the outer side of the brick mold layer.

3. The anaerobic fermentation tank with the integrated steel roof and cement tank body as claimed in claim 2, wherein the outer side of the extruded polystyrene board layer of the bottom wall is provided with a plain concrete cushion layer.

4. The anaerobic fermentation tank with the integrated steel roof and cement tank body as claimed in claim 1, wherein the outside of the extruded polystyrene layer on the steel roof is provided with a fine stone concrete layer.

5. The anaerobic fermentation tank with the integrated steel roof and cement tank body as claimed in claim 1, wherein the edge of the steel roof is provided with a guard rail.

6. The anaerobic fermentation tank with the integrated steel roof and cement tank body as claimed in claim 2, wherein the extruded polystyrene plate layer comprises a first layer and a second layer, and the splicing seams of the first layer and the splicing seams of the second layer are staggered from each other by a distance not less than 500 mm.

7. The anaerobic fermentation tank with the integrated steel roof and cement tank body as claimed in claim 2, wherein a plurality of vertical flat irons are arranged on the outer side of the extruded polystyrene layer of the side wall at equal intervals along the circumferential direction, a circumferential flat iron is arranged on an outer fastening sleeve of the vertical flat irons, and a second color steel plate layer is arranged on the outer side of the extruded polystyrene layer of the side wall.