CN106479867B - A kind of positive/negative pressure protection device and marsh-gas fermentation tank - Google Patents
A kind of positive/negative pressure protection device and marsh-gas fermentation tank Download PDFInfo
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- CN106479867B CN106479867B CN201611213403.XA CN201611213403A CN106479867B CN 106479867 B CN106479867 B CN 106479867B CN 201611213403 A CN201611213403 A CN 201611213403A CN 106479867 B CN106479867 B CN 106479867B
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/40—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
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Abstract
The invention discloses a kind of positive/negative pressure protection device, the fermentation liquid level in tank body or less is protruded into the bottom end of the first protection pipe；Second protection pipe top is connected to the first protection pipe, the water surface in reservoir or less is protruded into bottom end.Reservoir is fixed in tank body, its relative position is kept to fix, and is located at fermentation liquid level or more.Atmospheric communicating pipe is connected to the first protection pipe and the second protection pipe respectively, and is stretched out in tank body and be in communication with the outside.When the negative pressure value of tank interior is more than preset value, the external gas of tank body enters tank interior by atmospheric communicating pipe, and internal pressure kept is avoided to decline, and make-up gas is to maintain pressure value in a certain range.When the positive pressure value of tank interior is more than preset value; water in reservoir can enter in the first protection pipe by the second protection pipe; it is entered in tank body through the first protection pipe; with the reduction of reservoir water; second protection pipe can be connected to outside; the air of tank interior is discharged, maintains the air pressure of inside within the scope of reasonable.
Description
Technical field
It is engaged in technical field the present invention relates to biogas system, further relates to a kind of positive/negative pressure protection device and biogas fermentation
Tank.
Background technique
In recent years, the technology that fowl poultry kind manure fermentation generates biogas efficiently solves Pollution from livestock and poultry, while also mentioning
A kind of new clean energy resource is supplied.The main component of biogas is methane, by various organic substances, in the condition of isolation air
Under, and the temperature for being suitable for, pH value are kept, a kind of combustible gas generated by the fermentation of microorganism.Biogas belongs to two
The secondary energy is a kind of renewable energy.
Anaerobic fermentation reactor is during normal operation by charging discharging, outside air temperature variation and with gas system wave
Dynamic influence, the pressure in reactor fluctuate frequent occurrence, must to prevent pressure oscillation from causing tank body unstability, spalling or ceiling
The device that positive/negative-pressure influence can be eliminated must be set, guarantee tank for sewage gas trouble free service.
Currently used positive/negative pressure protection device is usually mechanical or hydrolock, mutually only with methane-generating pit in structure
It is vertical, it is cumbersome to invest high management.The problems such as there is also corrosions to fail for mechanical protector, and the service life is low, water seal protector takes up an area face
Product is big, and low temperature environment easy freezing does not simply fail to work on to play a protective role, it is also possible to spalling tube body.
Therefore, for those skilled in the art, positive/negative-pressure in a kind of adjustable tank for sewage gas how is designed, and can
Biogas fermentation device of the conventional protection devices there are disadvantage is avoided, is the current technical issues that need to address.
Summary of the invention
The present invention provides a kind of positive/negative pressure protection device, the air pressure balance being able to maintain inside marsh-gas fermentation tank, to fermentation
Tank plays a protective role.Concrete scheme is as follows:
A kind of positive/negative pressure protection device, comprising:
First protection pipe, bottom end can extend into the fermentation liquid level in tank body or less；
Second protection pipe, bottom end can extend into the reservoir being fixedly installed in the tank body, and top connection described first is protected
Pillar, the reservoir are located at fermentation liquid level or more；
Atmospheric communicating pipe is connected to first protection pipe and second protection pipe respectively, and stretches out in the tank body
It is in communication with the outside.
Optionally, first protection pipe, second protection pipe and the atmospheric communicating pipe are in be vertically arranged, described
Atmospheric communicating pipe is fixed on the top of the tank body.
Optionally, the linkage section between first protection pipe and second protection pipe is in horizontally disposed.
Optionally, second protection pipe is arranged between first protection pipe and the atmospheric communicating pipe.
Optionally, first protection pipe and the atmospheric communicating pipe are the broken pipe of a smooth transition, including water
Flat section；Second protection pipe is connected on horizontal segment.
Optionally, first protection pipe, second protection pipe and the reservoir are fixed to each other.
Optionally, first protection pipe runs through the bottom of the reservoir, and the bottom of the reservoir keeps sealing
It is fixed；Second protection pipe is fixed on the top of the reservoir.
Optionally, first protection pipe, second protection pipe and the atmospheric communicating pipe are steel pipe.
In addition, the present invention also provides a kind of marsh-gas fermentation tank, including positive/negative pressure protection device described in any of the above embodiments.
The present invention provides a kind of positive/negative pressure protection device, including the first protection pipe, the second protection pipe, atmospheric communicating pipe and
The structures such as reservoir.Wherein the bottom end of the first protection pipe can extend into the fermentation liquid level in tank body hereinafter, the first protection pipe is downward
The distance protruded into is determined according to the preset value of negative pressure；Second protection pipe top is connected to the first protection pipe, bottom end can extend into water storage
The water surface in pond is hereinafter, the length of the second protection pipe is determined according to the preset value of positive pressure.Reservoir is fixed in tank body, keeps it
Relative position is fixed, and fermentation liquid level or more is located at.Atmospheric communicating pipe is connected to the first protection pipe and the second protection pipe respectively, and is stretched
It is in communication with the outside for tank body.
When the negative pressure value of tank interior is more than negative pressure preset value, the external gas of tank body enters tank body by atmospheric communicating pipe
Inside avoids internal pressure kept from declining, and make-up gas is to maintain pressure value in a certain range.When tank interior just
When pressure value is more than positive pressure preset value, the water in reservoir can enter in the first protection pipe by the second protection pipe, through the first protection
Pipe enters in tank body, and with the reduction of reservoir water, final second protection pipe can be connected to outside, therefore by tank interior
Air discharge, maintain internal air pressure within the scope of reasonable.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is that the positive/negative pressure protection device in the present invention is mounted on the structural schematic diagram in tank body.
Including:
First protection pipe 1, the second protection pipe 2, atmospheric communicating pipe 3, reservoir 4, tank body 5.
Specific embodiment
Core of the invention is to provide a kind of positive/negative pressure protection device, is able to maintain the air pressure inside marsh-gas fermentation tank and puts down
Weighing apparatus, plays a protective role to fermentor.
In order to make those skilled in the art more fully understand technical solution of the present invention, below in conjunction with attached drawing and specifically
Embodiment, explanation is described in detail to the fermentor and positive/negative pressure protection device of the application.
As shown in Figure 1, being mounted on the structural schematic diagram in tank body for the positive/negative pressure protection device in the present invention.The device packet
It includes: the structures such as the first protection pipe 1, the second protection pipe 2, atmospheric communicating pipe 3 and reservoir 4, wherein the bottom end energy of the first protection pipe 1
The fermentation liquid level enough protruded into tank body 5 is hereinafter, the inside of the first protection pipe 1 and tank body keep sealing by fermentation liquid level.Second
Liquid level that the bottom end of protection pipe 2 can extend into reservoir 4 passes through reservoir 4 hereinafter, reservoir 4 is fixed in tank body 5
In water and tank body 5 inside keep opposing seal.The top of second protection pipe 2 is connected to the first protection pipe 1, and reservoir 4
More than fermentation liquid level.
The bottom of atmospheric communicating pipe 3 is connected to the top of the first protection pipe 1 and the second protection pipe 2 respectively, the first protection pipe 1
It is interconnected with the top of the second protection pipe 2 and pipe 3 is communicated with the atmosphere and be connected to；The top of atmospheric communicating pipe 3 stretch out in tank body 5 with
External world's connection.
First protection pipe 1 extend into fermentation liquid level length below according to negative pressure default settings, and the second protection pipe 2 is stretched
Enter to 4 liquid level of reservoir length below according to positive pressure default settings, positive pressure preset value and negative pressure preset value are 5 energy of tank body
The positive and negative pressure of maximum of receiving.
When being negative pressure state in tank body 5, for the pressure inside tank body 5 lower than external pressure, air pressure persistently reduces the first guarantor
Liquid level in pillar 1 and the second protection pipe 2 constantly declines, and external air passes through atmospheric communicating pipe 3, using the first protection pipe
1 and second protection pipe 2 enter in tank body 5, improve the pressure values in tank body 5, avoid in tank body 5 that pressure is too low, pressure is high always
In negative pressure preset value.
When being barotropic state in tank body 5, the pressure inside tank body 5 is higher than external pressure, in the work of 5 air pressure inside of tank body
Under, fermented liquid can be expressed in the first protection pipe 1, while the liquid in reservoir 4 is expressed to the second protection pipe 2
In.Second protection pipe 2 and the first protection pipe 1 are in the same space, the second protection pipe 2 and first under same pressure action
The height that liquid in protection pipe 1 rises is consistent, but the second protection pipe 2 is shorter in length than the first protection pipe 1, therefore inevitable first
Liquid in protection pipe 1 first outreaches, and then the water in the second protection pipe 2 enters the first protection pipe 1 under the effect of gravity.It stores
The water in pond 4 is seldom, can be neglected for whole tank body 5, the water in entire reservoir 4 is all discharged to tank body
In 5 the height of fermentation liquid level will not substantially change, internal gas volume variation is influenced to ignore, also just not
Internal atmospheric pressure value can be changed.When internal pressure persistently increases, the water in reservoir 4 can be constantly transferred in tank body 5, work as storage
When being reduced to sufficiently low the bottom end of second protection pipe 2 can expose the water surface in pond 4, solve the sealing of water removal, make tank interior
It is connected to outside air, internal gas can be discharged to the outside through the second protection pipe 2 and atmospheric communicating pipe 3, be kept inside tank body 5
Air pressure be consistently lower than positive pressure preset value.
After a positive pressure ventilation is protected, only a certain amount of water need to be injected i.e. into reservoir 4 by atmospheric communicating pipe 3
It can restore to work normally.Due to going out release heat inside tank body 5 during fermentation, temperature in winter will not be lower than zero
Degree is typically maintained in 15 DEG C or so suitable for fermentation, therefore is not in that icing causes to fail, throughout the year can normal work
Make.Hermetic seal is kept by fermentation liquid level and reservoir 4, internal maintains under high humidity environment always, and the moment carries out steam
Condensation process, will not be because of the excessively high water loss made in reservoir 4 of summer temperature.Condensed water constantly to 4 moisturizing of reservoir,
Extra water is flowed outwardly automatically into the fermentation liquid of lower section, and positive/negative-pressure protection remains at steady state, can be exempted from for a long time
In maintenance.
The present invention passes through the mutual cooperation between the first protection pipe 1, the second protection pipe 2, atmospheric communicating pipe 3 and reservoir 4,
Maintain the air pressure inside entire tank body 5 between the highest and lowest air pressure that can bear, without departing from preset value, to fermentation
Tank plays the role of being effectively protected.
Specifically, the application provides a kind of specific structure, the first protection pipe 1, the second protection pipe 2 and atmosphere herein
For pipe 3 in being vertically arranged, atmospheric communicating pipe 3 is fixed on the top of tank body 5.Company between first protection pipe 1 and the second protection pipe 2
Section is connect in being horizontally disposed with, so that the water in the second protection pipe 2 is successfully flowed to the first protection pipe 1, certainly, the two can also be connected
The part connect is set as to the inclined structure of the first protection pipe 1.
As shown in Figure 1, the setting of the second protection pipe 2 is communicated with the atmosphere between pipe 3 in the first protection pipe 1, it is of course also possible to will
Atmospheric communicating pipe 3 is arranged in centre, and the second protection pipe 2 is arranged in the first protection pipe 1 and is separately positioned on the two of atmospheric communicating pipe 3
Side, as long as interconnected structure is kept all to be possible.
More specifically, the broken pipe that pipe 3 is a smooth transition is communicated with the atmosphere in the first protection pipe 1, including horizontal segment.
First protection pipe 1 is communicated with the atmosphere pipe 3 and is independent straight tube, and in being vertically arranged, the top of the first protection pipe 1 passes through curved the two
Head is fixedly connected with horizontal segment, keeps smooth transition, and the bottom end of atmospheric communicating pipe 3 is fixedly connected by elbow with horizontal segment, is protected
Smooth transition is held, makes the first protection pipe 1 that the bending tube that pipe 3 forms an entirety be communicated with the atmosphere by elbow structure.Second protects
The top of pillar 2 is connected on horizontal segment, and aperture is arranged in the bottom of horizontal segment, directly by the second protection pipe 2 and horizontal segment into
Row is fixed.
In order to keep the globality of device stronger, facilitate installation, the present invention is by the first protection pipe 1, the second protection pipe 2 and water storage
Pond 4 is fixed to each other, and three forms an entirety together with atmospheric communicating pipe 3, and passes through the company at 5 top of atmospheric communicating pipe 3 and tank body
It meets place and realizes fixation.
Preferably, through-hole is arranged in the bottom of reservoir 4, by the in the bottom that the first protection pipe 1 can be run through to reservoir 4
One protection pipe 1 is passed down through and sealing is kept to fix.Second protection pipe 2 is fixed on the top of reservoir 4, is arranged in top horizontal
Connecting plate is fixed on the side wall of reservoir 4.
On the basis of any of the above-described technical solution and its intercombination, the first protection pipe 1, the second protection pipe 2 and atmosphere
Communicating pipe 3 is steel pipe, and the connection between all parts, which is all made of, to be welded and fixed.
In addition, the present invention also provides a kind of marsh-gas fermentation tank, including above-mentioned positive/negative pressure protection device is, it can be achieved that identical
Technical effect.Refer to the prior art for the other parts of the fermentor, and details are not described herein by the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, this hair
It is bright to be not intended to be limited to the embodiments shown herein, and be to fit to and the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (9)
1. a kind of positive/negative pressure protection device characterized by comprising
First protection pipe (1), bottom end can extend into and be connected to the fermentation liquid level in tank body (5) or less；
Second protection pipe (2), bottom end can extend into and are connected to the reservoir (4) being fixedly installed in the tank body (5), top connection
First protection pipe (1), the reservoir (4) are located at fermentation liquid level or more, and first protection pipe (1) and described second protect
Pillar (2) is in the same space, and second protection pipe (2) is shorter in length than first protection pipe (1)；
Atmospheric communicating pipe (3) is connected to first protection pipe (1) and second protection pipe (2) respectively, and is stretched out in described
Tank body (5) is in communication with the outside.
2. positive/negative pressure protection device according to claim 1, which is characterized in that first protection pipe (1), described second
In being vertically arranged, the atmospheric communicating pipe (3) is fixed on the tank body (5) for protection pipe (2) and the atmospheric communicating pipe (3)
Top.
3. positive/negative pressure protection device according to claim 2, which is characterized in that first protection pipe (1) and described the
Linkage section between two protection pipes (2) is in horizontally disposed.
4. positive/negative pressure protection device according to claim 3, which is characterized in that second protection pipe (2) is arranged in institute
It states between the first protection pipe (1) and the atmospheric communicating pipe (3).
5. positive/negative pressure protection device according to claim 4, which is characterized in that first protection pipe (1) and described big
Gas communicating pipe (3) is the broken pipe of a smooth transition, including horizontal segment；Second protection pipe (2) is connected to horizontal segment
On.
6. positive/negative pressure protection device according to claim 1, which is characterized in that first protection pipe (1), described second
Protection pipe (2) and the reservoir (4) are fixed to each other.
7. positive/negative pressure protection device according to claim 6, which is characterized in that first protection pipe (1) is through described
The bottom of reservoir (4), and the bottom of the reservoir (4) keeps sealing to fix；Second protection pipe (2) is fixed on described
The top of reservoir (4).
8. positive/negative pressure protection device according to any one of claims 1 to 7, which is characterized in that first protection pipe
(1), second protection pipe (2) and the atmospheric communicating pipe (3) are steel pipe.
9. a kind of marsh-gas fermentation tank, which is characterized in that including the described in any item positive/negative pressure protection devices of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611213403.XA CN106479867B (en) | 2016-12-23 | 2016-12-23 | A kind of positive/negative pressure protection device and marsh-gas fermentation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611213403.XA CN106479867B (en) | 2016-12-23 | 2016-12-23 | A kind of positive/negative pressure protection device and marsh-gas fermentation tank |
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| Publication Number | Publication Date |
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| CN106479867A CN106479867A (en) | 2017-03-08 |
| CN106479867B true CN106479867B (en) | 2018-12-07 |
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| CN201611213403.XA Active CN106479867B (en) | 2016-12-23 | 2016-12-23 | A kind of positive/negative pressure protection device and marsh-gas fermentation tank |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266543A (en) * | 2018-11-20 | 2019-01-25 | 黄冬艳 | A kind of methane production device of automatic adjustment |
| CN112273061B (en) * | 2020-10-29 | 2021-11-23 | 贵州金农富平生态农牧科技有限公司 | Silage processingequipment of steady voltage control |
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| US6024120A (en) * | 1998-09-25 | 2000-02-15 | Sherwood Services Ag | Pressure relief valve with moving diaphragm |
| CN102399682A (en) * | 2010-09-10 | 2012-04-04 | 辽宁北方环境保护有限公司 | Integral positive/negative pressure protector |
| CN203582852U (en) * | 2013-12-10 | 2014-05-07 | 巫溪县宏柳沼气设备中心 | Positive-negative pressure device of methane tank |
| CN204358429U (en) * | 2014-11-28 | 2015-05-27 | 中国科学院青岛生物能源与过程研究所 | A kind of positive/negative pressure protection device |
| CN204589165U (en) * | 2015-04-27 | 2015-08-26 | 何若平 | A kind of positive/negative-pressure protection of anaerobic reactor and drawing mechanism |
| CN105861281A (en) * | 2016-04-26 | 2016-08-17 | 山东百川同创能源有限公司 | Maintenance-free tank body integrated positive/negative-pressure protector |
-
2016
- 2016-12-23 CN CN201611213403.XA patent/CN106479867B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6024120A (en) * | 1998-09-25 | 2000-02-15 | Sherwood Services Ag | Pressure relief valve with moving diaphragm |
| CN102399682A (en) * | 2010-09-10 | 2012-04-04 | 辽宁北方环境保护有限公司 | Integral positive/negative pressure protector |
| CN203582852U (en) * | 2013-12-10 | 2014-05-07 | 巫溪县宏柳沼气设备中心 | Positive-negative pressure device of methane tank |
| CN204358429U (en) * | 2014-11-28 | 2015-05-27 | 中国科学院青岛生物能源与过程研究所 | A kind of positive/negative pressure protection device |
| CN204589165U (en) * | 2015-04-27 | 2015-08-26 | 何若平 | A kind of positive/negative-pressure protection of anaerobic reactor and drawing mechanism |
| CN105861281A (en) * | 2016-04-26 | 2016-08-17 | 山东百川同创能源有限公司 | Maintenance-free tank body integrated positive/negative-pressure protector |
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| CN106479867A (en) | 2017-03-08 |
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