CN206859384U - The device of pernicious gas in a kind of draining-off sewage pipe network - Google Patents
The device of pernicious gas in a kind of draining-off sewage pipe network Download PDFInfo
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- CN206859384U CN206859384U CN201720782008.7U CN201720782008U CN206859384U CN 206859384 U CN206859384 U CN 206859384U CN 201720782008 U CN201720782008 U CN 201720782008U CN 206859384 U CN206859384 U CN 206859384U
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- pipe
- inspection shaft
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- sewage
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Abstract
The utility model discloses a kind of device of pernicious gas in draining-off sewage pipe network, and the soil stack on building is connected on inspection shaft by going out family pipe；The bottom connection gas skirt of breather pipe on sewage main pipe downstream building, in the other end of breather pipe, rotation blast cap is set, the well lid of inspection shaft is sealed, so that pernicious gas is converged in sewage main pipe, soil stack is brought ambient atmos into inspection shaft in drainage procedure and constantly accumulated, and air pressure raises in well, promotes sewage main pipe internal gas flow, gas in sewage main pipe is collected by gas skirt, discharged finally by breather pipe.The utility model device is simple, and space is small, low to highway communication influence degree；Cost is low, and without extra addition power set, the rotation blast cap for pipe end of ventilating can realize exhaust under faint wind-force effect.
Description
Technical field
It the utility model is related to construction drainage and municipal works field, and in particular to gas is harmful in a kind of draining-off sewage pipe network
The device of body.
Background technology
When the pernicious gas such as cumulative methane in municipal sewage pipe network and hydrogen sulfide, the normal blowdown work(of pipe network can be influenceed
Energy.Methane occurs easily to be lighted or even exploded by naked light in the case that low concentration mixes (5%) with air, and high concentration
Hydrogen sulfide gas can not only poison health, can also corrosion pipeline and trigger sewage to leak.Environmental Protection Agency is to underground sewage
The investigation of pipe network finds that the corrosion basic reason that sewage conduct is subject to is the generation and aggregation of hydrogen sulfide, dense when sulfide
When degree reaches 2mg/L, serious corrosion can occur for tube wall, and annual corrosion rate can be between 2.5mm and 10mm.Anaerobism
The amount reproduction of microorganism is the immediate cause for causing methane and hydrogen sulfide to produce and accumulate under environment.As sewage is in pipe network
Flowing, oxygen is gradually consumed by microorganism and bacterium, but is difficult to be supplemented, in such a case, some anaerobic bacteria (sulphur
Hydrochlorate reducing bacteria and methane backeria) start amount reproduction, and the larger molecular organicses in sewage are anti-by a series of biochemistries
Should, produce hydrogen sulfide and spill among air.If hydrogen sulfide can not come out from pipe network internal discharge in time, will constantly tire out
Product, it is attached in the side wall of internal humidity, finally corrodes sewage conduct.
Accordingly, it is capable to anaerobic environment in no improvement pipe network, suppresses the breeding of anaerobic bacteria, it is to reduce to reduce pernicious gas accumulation
Measure and avoid the key point of personnel casualty accidentses.To reach this purpose, the measure taken at present mainly has two kinds：(1) drum
Wind method：By inspection shaft or the air blower of pipeline opening, anaerobic environment can be changed by inside fresh air conveying to pipeline
For aerobic environment, so as to inhibit the generation of methane and hydrogen sulfide.(2) method is added：The action principle for adding method is different.If
In order to suppress the activity about microorganism, alkaline environment is created, quick lime etc. can be added；If in order to influence methane and H2S's
Produce, the oxidation-reduction potential of water body can be improved, add the materials such as nitrate；If in order to control the loss process of sulfide,
Metal ion can be added, promotes sulfide to change to form metal sulfide and deposited.Existing two methods can drop
Harmful gas concentration in low underground sewer, improve the anaerobic environment inside pipe network, but also have certain limitation simultaneously.Drum
Anaerobic environment is changed into aerobic environment, but action time can not by wind method although improving the oxygen concentration in pipeline rapidly
Muchly maintain down；Also, limited by oxygen mass transfer effect, alternated blasting is difficult to produce the microorganism for being deposited on pipeline bed mud
It is raw to influence.The method of adding needs to add a large amount of medicines, therefore not economical enough, and drug variety can have an impact to treatment effect,
The medicine newly added also influences whether the final treatment effect of sewage.
The content of the invention
The defects of for existing technology of preparing and deficiency, the purpose of this utility model are to provide in a kind of draining-off sewage pipe network
The device of pernicious gas, solve limitation existing for existing sewer gas elimination technique and cause pipeline easily occur blast and
The problem of release of toxic gas.
To achieve these goals, the utility model, which adopts the following technical scheme that, is achieved：
The device of pernicious gas, the device are respectively arranged on the breather pipe of inspection shaft, building in a kind of draining-off sewage pipe network
On soil stack, for described inspection shaft on sewage main pipe, the device includes gas skirt, rotation blast cap and closing cover；
Described gas skirt is located in inspection shaft, and described gas skirt is connected to logical on sewage main pipe downstream building
Tracheae one end, described rotation blast cap are located at the other end of breather pipe；
Described soil stack is turned on inspection shaft；
Described inspection shaft is sealed by closing cover.
The utility model also has following distinguishing feature：
Soil stack on described sewage main pipe upstream building goes out family pipe by one and is connected on inspection shaft.
Open hole on described inspection shaft well lid is sealed by closing cover；Described closing cover include cap, cap handle and
Lancet, described cap handle are connected to cap one end, and described lancet is located at the cap other end.
Described cap is in umbrella, and described cap is provided with groove, rotating shaft, described lancet are provided with described groove
It is connected in rotating shaft.
The position of described gas skirt is higher than the peak level in inspection shaft.
Described rotation blast cap is provided with an auxiliary tube, and one end of described auxiliary tube is placed in breather pipe, auxiliary tube
The other end passes through rotation blast cap.
Compared with prior art, the beneficial effects of the utility model are：
(1) the utility model is free using current in soil stack by the way that sewage pipe is connected with building soil stack
The gas carried during whereabouts is constantly accumulated in inspection shaft, in inspection shaft the accumulation of air pressure cause sewage conduct both ends air pressure to be present
Difference, and then promote the gas inside pipeline to be moved along the direction of current, finally discharged by breather pipe, realize sewage conduct
Internal air exchange, improves anaerobic environment.
(2) the utility model device is simple, and space is small, low to highway communication influence degree.
(3) the utility model cost is low, and without extra addition power set, the rotation blast cap for pipe end of ventilating can be micro-
The lower can of weak wind-force effect realizes exhaust.
Brief description of the drawings
Fig. 1 is the connection diagram of the utility model breather pipe and leakage check well.
Fig. 2 is the connection diagram of rotation blast cap and breather pipe.
Fig. 3 is inspection shaft schematic diagram.
Fig. 4 is inspection shaft closing cover connection diagram.
Fig. 5 is that sewage main pipe is connected schematic diagram with building drainpipe.
The implication of each label in accompanying drawing：1- sewage main pipes, 2- trunk sewers, 3- inspection shafts, 4- soil stacks, 5- ventilations
Pipe, 6- gas skirts, 7- rotation blast caps, 8- go out family pipe, 9- connecting tubes；
(3-1)-well lid, (3-2)-open hole, (3-3)-closing cover, (3-3-1)-cap, (3-3-2)-cap handle, (3-3-
3)-lancet, (3-3-4)-groove, (3-3-5)-rotating shaft；(7-1)-auxiliary tube.
Explanation is further explained in detail to particular content of the present utility model with reference to embodiments.
Embodiment
Ventilation bottom of the tube on existing building is connected with soil stack, and the other end is located at top of building, and draining is stood
Pipe connection going out on the pipe of family on the ground, go out family pipe and be connected with trunk sewer, trunk sewer is switched in inspection shaft, and building is arranged
Water is converged in sewage main pipe by trunk sewer.The utility model is real by causing draught head at sewage main pipe both ends
Now gas exchanges internal in pipe, improve anaerobic environment.The sewage conduct that pernicious gas accumulation is likely to occur for one section comes
Say, in normal conditions, inside sewage pipeline air pressure is held essentially constant with the air pressure in the inspection shaft of both ends, thus in pipeline
Pernicious gas is accumulated；Now if the inspection shaft of its upstream can be connected with the soil stack of building, the inspection in downstream
The breather pipe that well is looked into another building is connected, can be so that the gas carried in soil stack during current free-falling to be utilized
Come, then by means of some existing facilities, realize the gas exchanges of inside sewage pipeline, suppress the breeding of anaerobe.When
When soil stack 4 is joined directly together with the inspection shaft on sewage main pipe 1, then a part of gas in soil stack also will
As current enter inspection shaft 3, further, if inspection shaft is closed, continuous accumulation can shape in inspection shaft of gas
Into the positive pressure environment of part so that pressure differential is formed between upstream inspection shaft and downstream inspection shaft, promotes pernicious gas in sewage
Movement；On the other hand, if it is possible to the inspection shaft 3 in the downstream of sewage main pipe 1 is connected with the breather pipe 5 of skyscraper, when
When blast cap 7 rotates under wind-force effect, the gas in breather pipe can be pumped out.So, the ventilation of skyscraper
The inspection shaft managed and be attached thereto can form local subnormal ambient.The draught head at the both ends of sewage main pipe 1 can be with promotion
Gas inside pipeline moves along the direction of current, is finally discharged by breather pipe 5, realizes the sky of inside sewage pipeline
Gas exchanges, and anaerobic environment is improved, so as to solve the pipe explosion frequently occurred and toxic gas leakage problem.
Current inspection shaft offers open hole 3-2 in order to easy to installation and maintenance, typically on well lid, in order to prevent
Evil gas is by the hole loss on well lid out, it is necessary to carry out encapsulation process to inspection shaft.The utility model uses closing cover
Open hole is blocked, is not influenceing traffic above-ground and inspection shaft is brought into normal play and causes pernicious gas in inspection shaft on the basis of effect
Interior constantly accumulation.Specifically, closing cover includes cap 3-3-1, cap handle 3-3-2 and lancet 3-3-3, cap handle is connected to cap one
End, lancet 3-3-3 are located at the cap other end, and cap 3-3-1 is in umbrella, and cap is provided with groove 3-3-4, in groove 3-3-4
Provided with rotating shaft 3-3-5, lancet 3-3-3 is connected on rotating shaft 3-3-5.When needing to open open hole, using hook by closing cover
Lift can.
The utility model is provided with gas skirt 6 in the end of breather pipe 5 in inspection shaft.Especially, the cloth of gas skirt
The peak level for being higher than and being likely to occur in inspection shaft is put, to ensure that gas is all discharged from breather pipe as far as possible.
The utility model is provided with rotation blast cap 7 at the top of the breather pipe above building, and blast cap is higher by building roof
Distance be more than 2 meters, when wind direction for it is horizontal when, blast cap can rotate, and the negative pressure at the blast cap back side can provide vertical direction
Suction force so that the gas inside breather pipe emits.Further, auxiliary tube 7-1 is set on blast cap, can strengthen and take out
Effect is inhaled, accelerates the gas migration speed inside breather pipe.
Specific embodiment of the utility model given below is, it is necessary to which explanation is that the utility model is not limited to following tool
Body embodiment, all equivalents done on the basis of technical scheme each fall within the scope of protection of the utility model.
Embodiment 1
The present embodiment provides a kind of pernicious gas method in draining-off sewage pipe network, and this method is to the soil stack on building
Handled with breather pipe, including：Soil stack on building is connected on inspection shaft, sewage main pipe downstream is built
The breather pipe of thing is connected on sewage main pipe, and inspection shaft is sealed so that gas is converged in sewage main pipe；Soil stack
Gas is brought into closed inspection shaft in drainage procedure and is constantly accumulated, it is dirty by promoting with the rise of air pressure in inspection shaft
Water main pipe internal gas flow, is discharged eventually through breather pipe.
Embodiment 2
As shown in Figures 1 to 4, the present embodiment provides a kind of device of pernicious gas in draining-off sewage pipe network, the device point
Not She Yu inspection shaft 3, building breather pipe 5 and soil stack 4 on, inspection shaft 3 is on the sewage main pipe 1, sewage trunk
Pipe 1 tilts horizontal by the gradient；The device includes gas skirt 6 and rotation blast cap 7, and gas skirt 6 is located in inspection shaft 3, is checked
The well lid 3-1 of well is sealed, and one end of the breather pipe 5 on the downstream building of sewage main pipe 1 is connected to collection by a connecting tube 9
On gas hood 6, rotation blast cap 7 is located at the other end of breather pipe 5, and the soil stack 4 on the upstream building of sewage main pipe 1 is by going out
Family pipe 8 is connected on inspection shaft 3, the thrust caused by free-electron model from top to down of the current in soil stack 4, promotes sewage master
The pernicious gas that the inside of main 1 is accumulated moves along water (flow) direction, and the gas that gas skirt 6 is collected in sewage main pipe passes through ventilation
Pipe 5 is discharged；
Open hole 3-2 on inspection shaft well lid 3-1 is sealed by closing cover 3-3；Closing cover 3-3 includes cap 3-3-1, cap
Handle 3-3-2 and lancet 3-3-3, cap handle 3-3-2 are connected to cap 3-3-1 one end, and lancet 3-3-3 is located at the cap 3-3-2 other ends.
Cap 3-3-1 is in umbrella, and cap 3-3-1 is provided with groove 3-3-4, and rotating shaft 3-3-5 is provided with groove 3-3-4, and lancet 3-3-3 connects
It is connected on rotating shaft 3-3-5.The set location of gas skirt 6 is higher than the peak level being likely to occur in inspection shaft.
The difference of another technical scheme and embodiment 1 is：Rotation blast cap 7 is provided with an auxiliary tube 7-1, auxiliary tube
7-1 one end is placed in breather pipe 5, and the auxiliary tube 7-1 other end passes through rotation blast cap.
Embodiment 3
The present embodiment provides a kind of pernicious gas method in draining-off sewage pipe network, using the device described in embodiment 2, including
Following steps：The concentration of pernicious gas in sewage main pipe is detected first；Typically, when people start to smell near inspection shaft it is unpleasant
Smell when, show that the concentration of pernicious gas (hydrogen sulfide) herein alreadys exceed 0.41ppm, now, by the draining on building
Standpipe 4 is connected on inspection shaft 3 by going out family pipe 8；The bottom connection of breather pipe 5 on the downstream building of sewage main pipe 1
Gas skirt 6, rotation blast cap 7 is set in the other end of breather pipe 5, the well lid 3-1 of inspection shaft 3 sealed so that pernicious gas converges
Gather in sewage main pipe 1, the gas carried when the current free-electron model from top to down in soil stack 4 is constantly in inspection shaft
Interior accumulation, draught head being formed, the pernicious gas for promoting the inside of sewage main pipe 1 to accumulate moves along water (flow) direction, finally by
Gas skirt 6 collects the gas in sewage main pipe, and is discharged by breather pipe 6.
In order to verify that the free-falling of current in soil stack can make the gas in soil stack enter inspection shaft, so as to
The gas flowing in sewage main pipe is promoted, has carried out 2 groups of field tests.Battery of tests is on the roof of a 7 floor building
Carry out, air pressure and the wind speed change tested at ceiling duct；Second group of experiment goes out the inspection shaft that family pipe connect in the building
Nearby carry out, air pressure and the wind speed change tested at open hole.
The result of battery of tests shows：In soil stack in the natural dropping process of current, 760.96 are had~
1020.4L gas is inhaled into soil stack, also implies that the gas of almost same volume enters inspection shaft.Second group real
The result tested shows：In the case where inspection shaft does not seal, 6% gas overflows out of inspection shaft open hole, 94%
Gas is moved along sewage main pipe headroom, and therefore, the utility model is made by setting closing cover 3-3 in open hole
Obtain the gas that this part enters in inspection shaft to move all along the headroom of sewage main pipe, so as to original in inspection shaft
Pernicious gas play a role in promoting.In addition, experiment is front and rear is carried out to the other inspection shaft composition of gases within of building and concentration
Detection, the results showed that the H at building other two in inspection shaft2S and CH4Concentration is all reduced to 0, i.e. the utility model method is handled
Pernicious gas in sewage main pipe is significantly reduced.
Claims (6)
1. the device of pernicious gas in a kind of draining-off sewage pipe network, the device are respectively arranged on inspection shaft (3), the breather pipe of building
(5) and on soil stack (4), described inspection shaft is on sewage main pipe (1), it is characterised in that：The device includes gas collection
Cover (6), rotation blast cap (7) and closing cover (3-3)；
Described gas skirt (6) is located in inspection shaft (3), and described gas skirt (6) is connected to sewage main pipe (1) downstream building
Breather pipe (5) one end on thing, described rotation blast cap (7) are located at the other end of breather pipe (5)；
Described soil stack (4) is turned on inspection shaft (3)；
Described inspection shaft is sealed by closing cover (3-3).
2. the device of pernicious gas in draining-off sewage pipe network as claimed in claim 1, it is characterised in that：Described sewage trunk
Soil stack (4) on pipe (1) upstream building goes out family pipe (8) by one and is connected on inspection shaft (3).
3. the device of pernicious gas in draining-off sewage pipe network as claimed in claim 1, it is characterised in that：Described inspection shaft well
The open hole (3-2) covered on (3-1) is sealed by closing cover (3-3)；Described closing cover (3-3) includes cap (3-3-1), cap
Handle (3-3-2) and lancet (3-3-3), described cap handle (3-3-2) are connected to cap (3-3-1) one end, described lancet (3-3-
3) it is located at cap (3-3-1) other end.
4. the device of pernicious gas in draining-off sewage pipe network as claimed in claim 3, it is characterised in that：Described cap (3-
It is in 3-1) umbrella, described cap (3-3-1) is provided with groove (3-3-4), rotating shaft (3- is provided with described groove (3-3-4)
3-5), described lancet (3-3-3) is connected in rotating shaft (3-3-5).
5. the device of pernicious gas in draining-off sewage pipe network as claimed in claim 1, it is characterised in that：Described gas skirt
(6) position is higher than the peak level in inspection shaft.
6. the device of pernicious gas in draining-off sewage pipe network as claimed in claim 1, it is characterised in that：Described rotation blast cap
(7) be provided with an auxiliary tube (7-1), one end of described auxiliary tube (7-1) is placed in breather pipe (5), auxiliary tube (7-1) it is another
One end passes through rotation blast cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720782008.7U CN206859384U (en) | 2017-06-30 | 2017-06-30 | The device of pernicious gas in a kind of draining-off sewage pipe network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720782008.7U CN206859384U (en) | 2017-06-30 | 2017-06-30 | The device of pernicious gas in a kind of draining-off sewage pipe network |
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| CN206859384U true CN206859384U (en) | 2018-01-09 |
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| CN201720782008.7U Active CN206859384U (en) | 2017-06-30 | 2017-06-30 | The device of pernicious gas in a kind of draining-off sewage pipe network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107268765A (en) * | 2017-06-30 | 2017-10-20 | 西安建筑科技大学 | The method and device of pernicious gas in a kind of draining-off sewage pipe network |
-
2017
- 2017-06-30 CN CN201720782008.7U patent/CN206859384U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107268765A (en) * | 2017-06-30 | 2017-10-20 | 西安建筑科技大学 | The method and device of pernicious gas in a kind of draining-off sewage pipe network |
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