CN208577702U - It is a kind of catchment, the positive pressure protection device of anti-backflow function - Google Patents
It is a kind of catchment, the positive pressure protection device of anti-backflow function Download PDFInfo
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- CN208577702U CN208577702U CN201820346511.2U CN201820346511U CN208577702U CN 208577702 U CN208577702 U CN 208577702U CN 201820346511 U CN201820346511 U CN 201820346511U CN 208577702 U CN208577702 U CN 208577702U
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Abstract
The utility model relates to one kind to catchment, the positive pressure protection device of anti-backflow function, it is connect with tank for sewage gas and gas holder, including the shell with cavity, the housing upper surface is connected with air inlet pipe, one end of air inlet pipe is protruded into the cavity of shell, the air inlet pipe other end is used to connect the least significant end of the gas pipeline of tank for sewage gas, the housing upper surface is equipped with escape pipe, the escape pipe is used to connect gas holder by cleaning equipment, the cavity inside of the shell has U-shaped positive pressure protection pipe, the U-shaped positive pressure protection pipe includes the first pipeline section, second pipeline section and the first pipeline section of connection and the arc pipeline section of the second pipeline section bottom end, the upper end of first pipeline section is located in the cavity of shell, the upper surface of shell is stretched out in the upper end of second pipeline section, the side circumferential surface of first pipeline section upper end is equipped with spillway hole, the positive pressure protection of the utility model Device has the function of to catchment simultaneously and anti-backflow, and easy to process and maintenance.
Description
Technical field
The utility model relates to pressure protection equipment technical fields, and in particular to it is a kind of catchment, anti-backflow function
Positive pressure protection device.
Background technique
Biogas is organic matter under conditions of anaerobism, through a kind of fuel gas made of microbial fermentation.Therefore, in order to create
The condition of biogas generation is made, fermentor needs to close, keep the environment of anaerobism；Meanwhile it needing by positive-pressure protecting device, cooperation
Pipeline captation meets the pressure stabilizing environment in biogas environment, to avoid superpressure and refluence occur for biogas and cause leakage.
In the prior art, the positive pressure protection device of marsh-gas fermentation tank, anti-backflow liquid packing, the water collector overwhelming majority are all to be set
Independent equipment is counted into, the work of both equipment is all to generate pressure protection value by water seal, and water can evaporate when hot weather, is needed
Its water is supplemented；And water is more in equipment, if this just needs periodically to patrol without releasing and will affect its function in time
It looks into, increases management cost and hidden danger.
Patent 201120177503.8 discloses a kind of water seal water collector that biogas project uses, and can be realized positive pressure protection
With Auto-drainage, to maintain steady operation, but the technology be the case where the shallower place of underground water is in the presence of that can not drain, and
When initially adding water, it is difficult to control water level, and the patent does not integrate anti-backflow function.
Patent 201720877311.5 discloses a kind of positive-pressure protecting device, which sets primarily directed to cold district
Meter, pressure protective device and anti-backflow device is integrated with inside reactor tank, and discharge temperature interference can not have pipeline and catchment
Function builds due to integrated and tank interior and maintenance is all more complicated.
Utility model content
Purpose of the utility model is to overcome the deficiencies of the above prior art and provide one kind to catchment, anti-backflow function
The positive pressure protection device of energy, is provided simultaneously with positive pressure protection, anti-backflow and pipeline water collecting function, has evaded the shallower place of underground water,
Groundwater recharge enters the hidden danger of pipeline, and easy to process and maintenance.
To achieve the above object, the utility model adopts the following technical solutions:
It is a kind of catchment, the positive pressure protection device of anti-backflow function, connect with tank for sewage gas and gas holder, including with cavity
Shell, the housing upper surface are connected with air inlet pipe, and one end of air inlet pipe is protruded into the cavity of shell, and the air inlet pipe other end is used for
The least significant end of the gas pipeline of tank for sewage gas is connected, the housing upper surface is equipped with escape pipe, and the escape pipe is used for by net
Change equipment and connect gas holder, the cavity inside of the shell has U-shaped positive pressure protection pipe, and the U-shaped positive pressure protection pipe includes
First pipeline section, the second pipeline section and the first pipeline section of connection and the arc pipeline section of the second pipeline section bottom end, the upper end position of first pipeline section
In in the cavity of shell, the upper surface of shell is stretched out in the upper end of the second pipeline section.
Further, the side circumferential surface of first pipeline section upper end is equipped with spillway hole.
Further, the area of section of first pipeline section is greater than the area of section of the second pipeline section.
Further, height of the height of the air inlet pipe lowermost end less than spillway hole on the first pipeline section.
Further, the height of the gas pipeline interconnecting piece of the air inlet pipe and tank for sewage gas is greater than the second pipeline section upper surface
Highly.
Further, the distance of periphery lowermost end subtracts positive pressure protection most on the upside of the spillway hole center to arc pipeline section
Big value is not small with the product of numerical value and the first pipeline section area of section after water-column difference corresponding to positive pressure protection normal value
The product of the water-column corresponding to the second pipeline section area of section and positive pressure protection normal value.
Further, water-column corresponding to gas holder static pressure and the product of air inlet pipe area of section are cut no more than cavity
Face area and spillway hole center subtract the product of difference after 20mm to air inlet pipe lowermost end distance.
The utility model has the beneficial effects that
1, the positive pressure protection device of the utility model has been provided simultaneously with positive pressure protection, anti-backflow and pipeline water collecting function, and
The minimum point of outlet pipe is apparently higher than the spillway hole of positive pressure protection pipe, has evaded the shallower place of underground water, groundwater recharge
Into the hidden danger of pipeline.
2, the positive pressure protection device of the utility model, as an independent small device, easy to process and maintenance.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the restriction to the application for explaining the application.
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is original state schematic diagram when the utility model is used；
Fig. 3 is that tank for sewage gas produces the utility model status diagram after gas；
Fig. 4 is the utility model status diagram after the leakage of tank for sewage gas biogas；
Wherein, 1. shell, 2. cavitys, 3. air inlet pipe, 4. escape pipes, 5. tank for sewage gas gas pipelines, 6. cleaning equipment combustion gas
Pipeline, 7. first pipeline sections, 8. second pipeline sections, 9. arc pipeline sections, 10. spillway holes.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, existing positive pressure protection device does not have the function of catchmenting with anti-backflow simultaneously, for
The above problem, present applicant proposes it is a kind of catchment, the positive pressure protection device of anti-backflow function.
In a kind of exemplary embodiment of the application, as shown in Figure 1, it is a kind of catchment, the positive pressure of anti-backflow function protect
Device is protected, underground is installed on, is connect with tank for sewage gas and gas holder, including the shell 1 with cavity 2, the housing upper surface is connected with
The lower end of air inlet pipe 3, air inlet pipe is protruded into the cavity of shell, and air inlet pipe upper end is for connecting the minimum of tank for sewage gas gas pipeline 5
It holds, air inlet pipe side is located on the housing upper surface and is equipped with escape pipe 4, the escape pipe is used to pass through cleaning equipment fuel gas conduit
Road 6 connects cleaning equipment, and then connects gas holder, and the cavity inside of the shell has U-shaped positive pressure protection pipe, described U-shaped
Positive pressure protection pipe include the first pipeline section 7, the second pipeline section 8 and connection the first pipeline section and the second pipeline section bottom end arc pipeline section 9, it is described
The upper end of first pipeline section is located in the cavity of shell, and the upper surface of shell is stretched out in the upper end of the second pipeline section.
The side circumferential surface of first pipeline section upper end is equipped with spillway hole 10.
The area of section of first pipeline section is greater than the area of section of the second pipeline section.
Height of the height of the air inlet pipe lowermost end less than spillway hole on the first pipeline section.
On the upside of the spillway hole center to arc pipeline section the distance of periphery lowermost end subtract positive pressure protection maximum value with just
The product of numerical value and the first pipeline section area of section after water-column difference corresponding to pressure protection normal value is not less than the second pipe
The product of water-column corresponding to section area of section and positive pressure protection normal value.
The product of water-column corresponding to gas holder static pressure and air inlet pipe area of section no more than cavity cross section area with
Spillway hole center subtracts the product of difference after 20mm away from air inlet pipe lowermost end distance.
The positive pressure protection device of the utility model, before design, the engineering according to different size sets positive pressure maximum protection value pair
The water-column d answered, normally protection is worth corresponding water-column h, the corresponding water-column h of gas holder static pressure, tank for sewage gas to positive pressure
And the depth b, the area of section Sc and positive pressure protection pipe second of air inlet pipe of the gas holder air inlet pipe insertion water surface under normal condition
The area of section Sb of pipeline section, other structures size are designed according to the function and certain logical relation realized.
As shown in Fig. 2, the positive pressure protection device of the utility model, when initialization, injected from the upper end opening of the second pipeline section
Water is until fill entire cavity and positive pressure protection pipe.
As shown in figure 3, generating air pressure in the cavity of shell, the liquid level of cavity inside starts as tank for sewage gas starts to produce gas
Decline, the second pipeline section upper end of positive pressure protection pipe start to drain outward, and with the increase of pressure, liquid level drops to spilling water hole site
Afterwards, the water outside positive pressure protection pipe can not flow into positive pressure protection pipe from spillway hole, can not also discharge, so positive pressure protection pipe
The external water surface no longer declines, and the first inner tube segment water surface continues to decline, until it is the normal of f that the second pipeline section, which forms water-column,
Pressure water seal is protected, the first pipeline section area of section Sa meets following formula when design:
Sa×(c-g)≥Sb×f (1)
Wherein g is the difference of positive pressure protection maximum value water-column corresponding with positive pressure protection normal value, and c is spillway hole center
The distance of periphery lowermost end on the upside of to arc pipeline section, f are that normally protection is worth corresponding water-column, Sa first to positive pressure protection
The area of section of pipeline section, Sb are the area of section of the second pipeline section.
The function of spillway hole is to maintain the height of the water surface in cavity, and prevent from thus entering due to air inlet pipe lower end biogas
Water level fluctuation is generated inside cavity 4 causes internal water to be lost by positive pressure protection pipe, therefore sets spillway hole away from the first pipeline section upper end
The distance a in face is not less than 50mm.
It is leaked as shown in figure 4, working as biogas in tank for sewage gas, biogas pressure inside the tank necessarily reduces, and the combustion gas in gas holder has
The trend of reflux tank for sewage gas hinders combustion gas to enter tank for sewage gas into one via air inlet pipe since the water surface is inserted into the lower end of air inlet pipe
Step leakage, its working principle is that, since the pressure liquid level of gas holder is begun to decline in the cavity of shell, air inlet pipe liquid level rises to gas
Water-column h corresponding to cabinet static pressure, when design, the section of cavity meets the requirement of following formula,
Sd×(b-20)≥Sc×h (2)
Wherein, Sd is the area of section of cavity, and b is the depth that normal condition lower inlet duct is inserted into the water surface, and b value range exists
Between 50mm-70mm, Sc is the area of section of air inlet pipe, and h is the corresponding water-column value of gas holder static pressure.
It is designed using above-mentioned formula (2), liquid level rises to water-column corresponding to gas holder static pressure in air inlet pipe
After value, the liquid level in cavity will not continue to decline, and form water seal, and combustion gas will not be lost thence into tank for sewage gas, at this time cavity
Interior pressure is gas holder static pressure, and the water seal of positive pressure protection pipe exists, thus combustion gas will not be revealed.
Since air inlet pipe and the coupling part height of the gas pipeline of tank for sewage gas are higher than the second pipeline section upper surface height, and even
Socket part is located at the lowest part of tank for sewage gas gas pipeline, and extra water can be flowed out by the second pipeline section upper end of positive pressure protection pipe automatically,
And the stabilization that can maintain liquid level in cavity is conducive to the stable operation of positive pressure protection device.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but it is not practical new to this
The limitation of type protection scope, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (6)
1. it is a kind of catchment, the positive pressure protection device of anti-backflow function, connect with tank for sewage gas and gas holder, which is characterized in that including
Shell with cavity, the housing upper surface are connected with air inlet pipe, and one end of air inlet pipe is protruded into the cavity of shell, air inlet pipe
The other end is used to connect the least significant end of the gas pipeline of tank for sewage gas, and the housing upper surface is equipped with escape pipe, the escape pipe
For connecting gas holder by cleaning equipment, the cavity inside of the shell has U-shaped positive pressure protection pipe, the U-shaped positive pressure
Protection pipe includes the first pipeline section, the second pipeline section and the first pipeline section of connection and the arc pipeline section of the second pipeline section bottom end, first pipe
The upper end of section is located in the cavity of shell, and the upper surface of shell, the side of first pipeline section upper end are stretched out in the upper end of the second pipeline section
Circumferential surface is equipped with spillway hole.
2. it is as described in claim 1 it is a kind of catchment, the positive pressure protection device of anti-backflow function, which is characterized in that described the
The area of section of one pipeline section is greater than the area of section of the second pipeline section.
3. it is as described in claim 1 it is a kind of catchment, the positive pressure protection device of anti-backflow function, which is characterized in that it is described into
Height of the height of tracheae lowermost end less than spillway hole on the first pipeline section.
4. it is as described in claim 1 it is a kind of catchment, the positive pressure protection device of anti-backflow function, which is characterized in that it is described into
The height of the gas pipeline interconnecting piece of tracheae and tank for sewage gas is greater than the height of the second pipeline section upper surface.
5. it is as described in claim 1 it is a kind of catchment, the positive pressure protection device of anti-backflow function, which is characterized in that it is described excessive
The distance of periphery lowermost end subtracts positive pressure protection maximum value and positive pressure protection normal value institute on the upside of water hole center to arc pipeline section
The product of numerical value and the first pipeline section area of section after corresponding water-column difference is not less than the second pipeline section area of section and just
The product of water-column corresponding to pressure protection normal value.
6. it is as described in claim 1 it is a kind of catchment, the positive pressure protection device of anti-backflow function, which is characterized in that gas holder is quiet
The product of water-column corresponding to pressure value and air inlet pipe area of section no more than cavity cross section area and spillway hole center into
Tracheae lowermost end distance subtracts the product of difference after 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820346511.2U CN208577702U (en) | 2018-03-14 | 2018-03-14 | It is a kind of catchment, the positive pressure protection device of anti-backflow function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820346511.2U CN208577702U (en) | 2018-03-14 | 2018-03-14 | It is a kind of catchment, the positive pressure protection device of anti-backflow function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208577702U true CN208577702U (en) | 2019-03-05 |
Family
ID=65502888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820346511.2U Active CN208577702U (en) | 2018-03-14 | 2018-03-14 | It is a kind of catchment, the positive pressure protection device of anti-backflow function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208577702U (en) |
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2018
- 2018-03-14 CN CN201820346511.2U patent/CN208577702U/en active Active
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Effective date of registration: 20210210 Address after: 250101 Room 403, 4th floor, building a1-4, Hangu Jingu, high tech Zone, Jinan City, Shandong Province Patentee after: SHANDONG ZHIZHOU ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: Room 2201, 22 / F, building 2, Shuntai Plaza, 2000 Shunhua Road, high tech Zone, Jinan City, Shandong Province, 250101 Patentee before: SHANDONG BAICHUAN TONGCHUANG ENERGY Co.,Ltd. |