CN216427274U

CN216427274U - HDPE geomembrane engineering biogas device

Info

Publication number: CN216427274U
Application number: CN202123299023.1U
Authority: CN
Inventors: 张俊
Original assignee: Wuhan Langzhiyuan Environmental Protection Engineering Co ltd
Current assignee: Wuhan Langzhiyuan Environmental Protection Engineering Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-05-03
Anticipated expiration: 2031-12-24

Abstract

The HDPE geomembrane engineering methane device comprises a methane tank, wherein the methane tank comprises a lower end surface, an upper end surface and an inclined surface, the upper end surface of the methane tank is provided with an anchoring groove which comprises an HDPE geomembrane, a feeding and discharging pipeline, a methane exhaust pipe and a slag pumping pipeline, the HDPE geomembrane comprises an HDPE bottom membrane and an HDPE top membrane, and the HDPE top membrane and the HDPE bottom membrane are matched to seal the methane tank; the feeding and discharging pipeline comprises a feeding pipe and a discharging pipe, the feeding pipe is arranged on the left side of the methane tank, and the discharging pipe is arranged on the right side of the methane tank; the methane exhaust pipe is arranged at the upper end of the methane tank; the slag pumping pipeline is of a multi-pipeline frame structure and is arranged at the lower end of the methane tank. The methane tank is covered and sealed by the HDPE top film and the HDPE bottom film, materials such as excrement, straws and the like enter the methane tank to ferment and store methane, so that the methane is conveniently discharged, material waste residues are replaced, the generated methane is stored in the methane tank covered and sealed by the HDPE top film and the HDPE bottom film and is used by people, the HDPE film has good heat absorption performance, the methane yield is high, the construction cost of a methane generation place is low, and the construction is convenient.

Description

HDPE geomembrane engineering biogas device

Technical Field

The utility model relates to a storage technical field is made to marsh gas, specifically is HDPE geomembrane engineering biogas device.

Background

The development of biogas for many years has shifted from the requirement for its original low-grade function to a higher level. Especially, the importance of the current society on improving energy crisis and rural environmental problems becomes more and more important to popularize and popularize the biogas. However, the traditional methane tank has high cost, large occupied area, complex use and maintenance and low production efficiency, and can not well realize the slag discharging function.

SUMMERY OF THE UTILITY MODEL

To the above, the utility model provides a HDPE geomembrane engineering biogas device to solve the problem that provides in the above-mentioned background art.

The utility model provides a technical scheme that its technical problem adopted is: the method comprises the steps that a HDPE geomembrane engineering methane device is provided, a methane tank is excavated, the methane tank comprises a lower end face, an upper end face and an inclined face, anchoring grooves are formed in the periphery of a base soil layer of the upper end face of the methane tank and comprise the HDPE geomembrane, a feeding and discharging pipeline, a methane exhaust pipe and a slag pumping pipeline, the HDPE geomembrane comprises an HDPE bottom membrane covering the lower end face and the inclined face of the methane tank and an HDPE top membrane arranged at the top of the methane tank, the upper end part of the HDPE bottom membrane extends to the anchoring grooves from the upper end face of the methane tank, the HDPE bottom membrane can be backfilled and fixed in the anchoring grooves, and the HDPE top membrane and the HDPE bottom membrane are matched to seal the methane tank; the feeding and discharging pipeline comprises a feeding pipe and a discharging pipe, the feeding pipe is arranged on the left side of the methane tank, the outlet end of the feeding pipe penetrates through the HDPE bottom film and is positioned inside the left side of the methane tank, the discharging pipe is arranged on the right side of the methane tank, and the inlet end of the discharging pipe penetrates through the HDPE bottom film and is positioned inside the right side of the methane tank; the biogas exhaust pipe is arranged at the upper end of the biogas digester, and the inlet end of the biogas exhaust pipe penetrates through the HDPE bottom film and is positioned inside the upper end of the biogas digester; the slag pumping pipeline is of a multi-pipeline frame structure, the slag pumping pipeline is arranged at the lower end of the methane tank, and the inlet end of the multi-pipeline frame structure penetrates through the HDPE bottom film and is positioned in the lower end of the methane tank; when the biogas storage tank is used, materials are subjected to biogas catalytic storage in a biogas tank with the top HDPE film and the bottom HDPE film matched and sealed.

Furthermore, the cross section of the lower end surface of the methane tank is smaller than that of the upper end surface, and the included angle between the inclined surface and the lower end surface is larger than 90 degrees.

Further, the HDPE bottom film and the HDPE top film are sealed by adopting hot melting welding.

Furthermore, lawn layers are laid around the outer edge of the HDPE top film.

Further, the lower end face of the methane tank is subjected to layered rolling compaction, and the compaction density is not lower than 94%.

Furthermore, the joint of the upper end surface of the methane tank and the concave-convex corner of the surface of the matrix soil layer is in smooth transition radian arrangement, and the radius of the radian is not less than 0.5 m.

Furthermore, chamfers are arranged on the internal and external corners of the surface of the anchoring groove.

The utility model has the advantages that: the utility model discloses a HDPE apical membrane covers the methane-generating pit with the HDPE basement membrane sealedly, excrement and urine, material such as straw gets into and carries out the fermentation storage of marsh gas in the methane-generating pit, make things convenient for the discharge of marsh gas, the change of material waste residue, the HDPE basement membrane has excellent anti impaling ability, avoid most plant roots to the damage of HDPE basement membrane, the service life and the functional performance of methane-generating pit have been guaranteed, the HDPE apical membrane has ageing-resistant, ultraviolet-resistant effect, the coverage leakproofness of methane-generating pit has been guaranteed, the marsh gas storage of formation supplies people to use in HDPE apical membrane and the sealed methane-generating pit of HDPE basement membrane cover, HDPE heat absorption capacity is good, marsh gas yield, marsh gas takes place construction cost low, construction convenience, construction period is short, good material waste residue deslagging function has been had.

Drawings

Fig. 1 is a plan view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

FIG. 3 is a partial sectional view of the feed pipe in cooperation with the biogas digester.

FIG. 4 is a partial sectional view of the discharge pipe in cooperation with a biogas digester.

Fig. 5 is a partial sectional view of the biogas exhaust pipe in cooperation with the biogas digester.

FIG. 6 is a partial cross-sectional view of the slag extraction pipe in cooperation with the biogas digester.

In the figure, 1, a methane tank; 101. a lower end face; 102. an inclined surface; 103. an upper end surface; 2. a matrix soil layer; 3. a feed pipe; 4. a discharge pipe; 5. a slag pumping pipeline; 6. a biogas exhaust pipe; 7. anchoring the ditch; 8. a HDPE base film; 9. a HDPE top film.

Detailed Description

The invention is further described with reference to the drawings and some embodiments.

In fig. 1-6, a HDPE geomembrane engineering biogas device is provided, a biogas digester 1 can be excavated on site, the biogas digester 1 comprises a lower end surface 101, an upper end surface 103 and an inclined surface 102, and anchoring grooves 7 are arranged around a matrix soil layer 2 of the upper end surface 103 of the biogas digester 1; the lower end face 101 of the methane tank 1 is subjected to layered rolling compaction, and the compaction density is not lower than 94%; the methane tank comprises an HDPE geomembrane, 4 feeding and discharging pipes, a methane discharging pipe 6 and a slag pumping pipe 5, wherein the HDPE geomembrane comprises an HDPE bottom film 8 and an HDPE top film 9, the HDPE bottom film 8 covers the lower end surface 101 and the inclined surface 102 of the methane tank 1, the HDPE top film 9 is arranged at the top of the methane tank 1, the upper end part of the HDPE bottom film 8 extends to an anchoring groove 7 from the upper end surface 103 of the methane tank 1, the HDPE bottom film 8 can be backfilled and fixed in the anchoring groove 7, and the HDPE top film 9 and the HDPE bottom film 8 are matched to seal the methane tank 1; when the methane tank is used, the methane tank 1 can be excavated on site according to the methane production requirement, after the methane tank 1 is excavated and backfilled, the soil body on the lower end surface 101 of the methane tank 1 and the base soil layer 2 are subjected to layered rolling compaction, the compaction density reaches more than 94%, after the rolling compaction is finished, the lower end surface 101 of the methane tank 1 and the base soil layer 2 are smooth and have no cracks, no obvious sharp protrusions and no muddy depressions, after the base soil layer 2 is compacted, the anchoring ditch 7 is excavated, finally, the HDPE bottom membrane 8 is flatly laid on the lower end surface 101 and the inclined surface 102 of the methane tank 1, and extends to the anchoring ditch 7 from the upper end surface 103 of the methane tank 1, the HDPE bottom membrane 8 is backfilled and fixed by the soil layer in the anchoring ditch 7, then the HDPE top membrane 9 is hermetically connected with the periphery of the HDPE bottom membrane 8 by a hot melt welding sealing technology, the HDPE geomembrane sealing of the methane tank 1 is realized, and the materials such as excrement and straw enter the methane tank 1 to be fermented and stored, the HDPE bottom film 8 has excellent anti-piercing capability, the damage of most plant roots to the HDPE bottom film 8 is avoided, the service life and the function exertion of the methane tank 1 are ensured, the HDPE top film 9 has the effects of aging resistance and ultraviolet resistance, the covering sealing property of the methane tank 1 is ensured, the generated methane is stored in the methane tank 1 covered and sealed by the HDPE top film 9 and the HDPE bottom film 8 and is used by people, the HDPE film has good heat absorption performance, the methane yield is high, the construction cost of a methane generation place is low, the construction is convenient, and the construction period is short.

In the embodiment, the feeding and discharging pipeline comprises a feeding pipe 3 and a discharging pipe 4, the feeding pipe 3 is arranged at the left side of the methane tank 1, and the outlet end of the feeding pipe 3 penetrates through an HDPE bottom membrane 8 and is positioned inside the left side of the methane tank 1; when in use, materials such as excrement, straws and the like are led into the inlet end of the feeding pipe 3 and are discharged into the methane tank 1 through the outlet end positioned inside the left side of the methane tank 1 for methane fermentation, and the generated methane is stored in the methane tank 1 sealed by the HDPE geomembrane.

In the embodiment, the methane exhaust pipe 6 is arranged at the upper end of the methane tank 1, and the inlet end of the methane exhaust pipe 6 penetrates through the HDPE bottom film 8 and is positioned inside the upper end of the methane tank 1; the outlet end of the methane exhaust pipe 6 is connected with a methane tank, when enough methane is generated in the methane tank 1, the methane enters from the inlet end of the methane exhaust pipe 6 and is guided into the methane tank through the outlet end for storage and standby use.

In the embodiment, the discharge pipe 4 is arranged on the right side of the methane tank 1, and the inlet end of the discharge pipe 4 penetrates through the HDPE bottom film 8 and is positioned inside the right side of the methane tank 1; the outlet end of the discharge pipe 4 is connected with a biogas slurry storage tank, when material residues in the biogas digester 1 need to be replaced, the biogas slurry in the biogas digester 1 firstly enters through the inlet end of the discharge pipe 4 and is guided into the biogas slurry storage tank through the outlet end to be treated by workers.

In the embodiment, the slag pumping pipeline 5 is of a multi-pipeline frame structure, the slag pumping pipeline 5 is arranged at the lower end of the methane tank 1, and the inlet end of the multi-pipeline frame structure penetrates through the HDPE bottom film 8 and is positioned inside the lower end of the methane tank 1; the outlet end of the residue pumping pipeline 5 is connected with a residue discharge well, after biogas slurry in the biogas digester 1 is introduced into the biogas slurry storage tank, solid residues in the biogas digester 1 are pumped into the residue pumping pipeline 5 by the inlet end of the multi-pipeline frame structure and are introduced into the residue discharge well through the outlet end, and the solid residues are treated by workers.

In this embodiment, the cross section of the lower end surface 101 of the methane tank 1 is smaller than the cross section of the upper end surface 103, and the included angle between the inclined surface 102 and the lower end surface 101 is greater than 90 degrees; the size and the shape of the methane tank 1 can be excavated according to the actual situation.

In the embodiment, the HDPE bottom film 8 and the HDPE top film 9 are sealed by hot melting welding; the hot-melt welding is sealed, the welding seam strength is high, the construction is convenient and safe, and the sealing performance of the methane tank 1 is ensured.

In the embodiment, a lawn layer is laid around the outer edge of the HDPE top film 9; the HDPE top film 9 and the HDPE bottom film 8 can be well compacted to ensure the sealing performance of the methane tank 1 and avoid methane leakage.

In the embodiment, the joint of the upper end surface 103 of the methane tank 1 and the concave-convex corner of the surface of the matrix soil layer 2 is set in a smooth transition radian mode, and the radius of the radian is not less than 0.5 m; chamfers are arranged on the internal and external corners of the surface of the anchoring groove 7; the HDPE basement membrane 8 can be smoothly laid on the lower end surface 101 and the inclined surface 102 of the methane tank 1 and extend to the anchoring groove 7 from the upper end surface 103 of the methane tank 1, and gaps can be smoothly laid, so that the sealing performance of the methane tank 1 is ensured.

The utility model discloses when concrete implementation: when the device is used, the methane tank 1 can be excavated on site according to the methane production requirement, after the methane tank 1 is excavated and backfilled, the soil body on the lower end face 101 of the methane tank 1 and the base soil layer 2 are subjected to layered rolling compaction, the compaction density reaches more than 94%, after the rolling compaction is completed, the lower end face 101 of the methane tank 1 and the base soil layer 2 are smooth and have no cracks, no obvious sharp protrusions and no muddy depressions, after the base soil layer 2 is compacted, the anchoring ditch 7 is excavated, finally, the HDPE bottom membrane 8 is flatly laid on the lower end face 101 of the methane tank 1 and the inclined face 102, and extends to the anchoring ditch 7 from the upper end face 103 of the methane tank 1, the HDPE bottom membrane 8 is backfilled and fixed in the anchoring ditch 7, and then the HDPE top membrane 9 is hermetically connected with the periphery of the HDPE bottom membrane 8 through a hot melt welding sealing technology, so that the HDPE geomembrane of the methane tank 1 is sealed; when in use, materials such as excrement, straws and the like are led into the inlet end of the feeding pipe 3 and are discharged into the methane tank 1 through the outlet end positioned in the left inner part of the methane tank 1 for methane fermentation, and the generated methane is stored in the methane tank 1 sealed by the HDPE geomembrane; when enough methane is generated in the methane tank 1, the methane enters from the inlet end of the methane exhaust pipe 6 and is guided into the methane tank for storage through the outlet end to be used by workers; when material residues in the methane tank 1 need to be replaced, the methane liquid in the methane tank 1 firstly enters through the inlet end of the discharge pipe 4 and then is led into the methane liquid storage tank through the outlet end; after biogas slurry in the biogas digester 1 is introduced into a biogas slurry storage tank, solid residues in the biogas digester 1 are pumped into a residue pumping pipeline 5 by an inlet end of the multi-pipeline frame structure and are introduced into a residue discharge well through an outlet end, and unified treatment is carried out by workers; the HDPE bottom film 8 has excellent anti-piercing capability, the damage of most plant roots to the HDPE bottom film 8 is avoided, the service life and the function exertion of the methane tank 1 are ensured, the HDPE top film 9 has the effects of aging resistance and ultraviolet resistance, the covering sealing property of the methane tank 1 is ensured, the generated methane is stored in the methane tank 1 covered and sealed by the HDPE top film 9 and the HDPE bottom film 8 and is used by people, the HDPE film has good heat absorption performance, the methane yield is high, the construction cost of a methane generation place is low, the construction is convenient, and the construction period is short.

It is worth mentioning that: in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; mechanical connection is possible, and the specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

HDPE geomembrane engineering biogas device excavates a methane-generating pit, the methane-generating pit includes terminal surface, up end, inclined plane down, and the matrix soil layer of methane-generating pit up end is equipped with anchor ditch, its characterized in that all around: the methane tank comprises a HDPE geomembrane, a feeding and discharging pipeline, a methane exhaust pipe and a slag pumping pipeline, wherein the HDPE geomembrane comprises an HDPE bottom membrane covering the lower end surface and the inclined surface of the methane tank and an HDPE top membrane arranged at the top of the methane tank, the upper end part of the HDPE bottom membrane extends to an anchoring groove from the upper end surface of the methane tank, the HDPE bottom membrane can be backfilled and fixed in the anchoring groove, and the HDPE top membrane and the HDPE bottom membrane are matched to seal the methane tank;

the feeding and discharging pipeline comprises a feeding pipe and a discharging pipe, the feeding pipe is arranged on the left side of the methane tank, the outlet end of the feeding pipe penetrates through the HDPE bottom film and is positioned inside the left side of the methane tank, the discharging pipe is arranged on the right side of the methane tank, and the inlet end of the discharging pipe penetrates through the HDPE bottom film and is positioned inside the right side of the methane tank;

the biogas exhaust pipe is arranged at the upper end of the biogas digester, and the inlet end of the biogas exhaust pipe penetrates through the HDPE bottom film and is positioned inside the upper end of the biogas digester;

the slag pumping pipeline is of a multi-pipeline frame structure, the slag pumping pipeline is arranged at the lower end of the methane tank, and the inlet end of the multi-pipeline frame structure penetrates through the HDPE bottom film and is positioned in the lower end of the methane tank; when the biogas storage tank is used, materials are subjected to biogas catalytic storage in a biogas tank with the top HDPE film and the bottom HDPE film matched and sealed.
2. The HDPE geomembrane engineering biogas device according to claim 1, characterized in that: the cross section of the lower end surface of the methane tank is smaller than that of the upper end surface, and the included angle between the inclined surface and the lower end surface is larger than 90 degrees.
3. The HDPE geomembrane engineering biogas device according to claim 1, characterized in that: the HDPE bottom film and the HDPE top film are sealed by adopting hot melting welding.
4. The HDPE geomembrane engineering biogas device according to claim 1, characterized in that: and lawn layers are paved around the outer edge of the HDPE top film.
5. The HDPE geomembrane engineering biogas device according to claim 1, characterized in that: and the lower end face of the methane tank is subjected to layered rolling compaction, and the compaction density is not lower than 94%.
6. The HDPE geomembrane engineering biogas device according to claim 1, characterized in that: the joint of the upper end surface of the methane tank and the concave-convex corner of the surface of the matrix soil layer is in smooth transition radian arrangement, and the radius of the radian is not less than 0.5 m.
7. The HDPE geomembrane engineering biogas device according to claim 1, characterized in that: and chamfers are arranged on the internal and external corners of the surface of the anchoring groove.