CN102252164A - Device for preventing air negative pressure from exceeding limit - Google Patents
Device for preventing air negative pressure from exceeding limit Download PDFInfo
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- CN102252164A CN102252164A CN2011102000638A CN201110200063A CN102252164A CN 102252164 A CN102252164 A CN 102252164A CN 2011102000638 A CN2011102000638 A CN 2011102000638A CN 201110200063 A CN201110200063 A CN 201110200063A CN 102252164 A CN102252164 A CN 102252164A
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- negative pressure
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- big chamber
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Abstract
The invention discloses a device for preventing air negative pressure from exceeding a limit, which comprises a large chamber, a small chamber and a ventilation pipe. The device for preventing air negative pressure from exceeding the limit is characterized in that the large chamber is of a short column shape, the small chamber is of an independent column shape, the small chamber is arranged in the large chamber or at the outer side of the large chamber, and the ventilation pipe is arranged on the lower part of the large chamber or on the middle upper part at one side of the large chamber; the upper part of the small chamber is provided with a protective cover capable of preventing liquid from being flushed away, preventing impurities, such as dust, insects and the like from entering the small chamber and supplementing water to a valve conveniently; and the large chamber or the small chamber is made of transparent materials. The device for preventing air negative pressure from exceeding the limit has the advantages of simple structure, low cost and convenience for mounting and is suitably used for preventing the negative pressure from exceeding the limit or preventing the positive pressure and the negative pressure from exceeding the limit in air-storing and air-producing devices, such as air-storing cabinets, methane tanks and the like.
Description
Affiliated technical field
The present invention relates to the anti-negative pressure of a kind of gas container anti-negative pressure of valve body, especially biogas gas holder and the biomass pool device that transfinites that transfinites.
Background technique
Air storage, aerogenesis equipment such as biogas gas holder and biomass pool all have certain pressure load design, and gas holder is on the exhaust, safety valve, and biomass pool makes the interior pressure limit of equipment within the specific limits, thereby avoids superpressure that equipment is damaged effect on the water pressure safety valve.Gas holder, biomass pool can produce negative pressure under situations such as operate miss or equipment pipe damage, negative pressure surpasses the equipment limit value and may damage equipment, need prevent to produce.Gas holder, the anti-super negative pressure design of biomass pool have two kinds, the one, in the air inlet of equipment or outlet pipe, threeway is installed, open the valve in the threeway when estimating to produce negative pressure, allow communicate with atmosphere in the equipment, this method can not be prevented operate miss and contingency; The 2nd, anti-negative pressure device is installed, and the negative pressure that restriction produces is low more good more, this method can round-the-clock anti-suction function, is optimum scheme.Existing negative pressure of vacuum safety valve has this function, but costs an arm and a leg, and every price is at four, 5,000 yuan more than.If adopt the inhalation valve of mechanical structure, promptly utilize weight valve or spring valve, have proportional relation through testing these two kinds of positive negative pressure of valve, malleation high negative pressure also high, negative pressure is low, and malleation will be leaked gas, and does not reach the designing requirement of lower negative pressure, high malleation.Chinese patent ZL200820224808.8 " a kind of PNPB control valve unit that prevents ", as shown in Figure 3, a side of this patent big chamber in valve body has vertical dividing plate, and valve body is separated out a capacitor, and the gap is left in the capacitor bottom, communicates with big chamber; Suction tude (function is ventilation) and liquid entering hole are arranged on the top of big chamber, and there is pressure gauge at the middle part, and liquid discharging valve is arranged at the bottom; Upper outside at capacitor has bleeder pipe, and level meter is equipped with in middle and lower part, the outside; With liquid is medium, can realize the requirement of lower negative pressure, high malleation.But the invalid volume of big chamber in the device occupies major part, is the waste of material, and structure is too complicated, the cost height.
Summary of the invention
In order to overcome the defective of the anti-negative pressure valve of existing gas, the invention provides the anti-negative pressure of a kind of gas device that transfinites, the anti-negative pressure of this gas device that transfinites has greatly dwindled the invalid volume of big chamber, and is simple in structure, cheap.
The technical solution adopted for the present invention to solve the technical problems is: comprise big chamber, capacitor, breathing pipe, big chamber is a doll shape, capacitor is independent cylindricality, and the capacitor bottom is located in the big chamber or the outside, and breathing pipe is located at big chamber bottom or side or top.
Protective housing is arranged at the capacitor top, and the protective housing bottom is suitable for reading equal with capacitor, and protective housing bottom opposite side is provided with the pipe that communicates with atmosphere, and there is capacitor angle suitable for reading dorsad the pipe upper end, and there is grid the lower end of pipe.Be furnished with aperture around the top, side of another kind of protective housing, the aperture gross area is equal to or greater than capacitor internal diameter cross-section area.The protective housing bottom is taken over the capacitor upper end and is flexible connection.
Big chamber or capacitor are made of transparent material.
The invention has the beneficial effects as follows: (1) has reduced big chamber height significantly, and simple in structure, favourable reduction cost; (2) protective housing on capacitor top has the liquid of preventing and is rushed out and produce becomes flat (if equipment air pressure is higher than the anti-negative pressure device that transfinites), anti-dust insect foreign material etc. and go into interiorly, convenient to open the capacitor water that adds suitable for reading with functions such as salt in valve body, and exempts to establish the filler; (3) big chamber or capacitor are transparent material, are convenient to pinpoint the problems at any time, accomplish timely moisturizing and thaw with salt.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is first kind of embodiment's of the present invention a sectional view.
Fig. 2 is second kind of embodiment's of the present invention a sectional view.
Fig. 3 is existing anti-PNPB control valve unit sectional view.
At Fig. 1 breathing pipe, 2 big chambers, 3 capacitors, 4 ring retainings, 5 take over 6 protective housings, 7 pipes, 8 grids, 9 apertures.
Embodiment
In Fig. 1, be first kind of embodiment, comprise big chamber (2), capacitor (3), breathing pipe (1), big chamber (2) is a doll shape, capacitor (3) is independent cylindricality, and capacitor (3) bottom is located in the big chamber (2), and breathing pipe (1) is located at big chamber (2) bottom.
Protective housing (6) is arranged at capacitor (3) top, protective housing (6) bottom is suitable for reading equal with capacitor (3), protective housing (6) bottom opposite side has the pipe (7) that communicates with atmosphere, there is capacitor (3) angle suitable for reading dorsad pipe (7) upper end, the lower end mouth of pipe (7) has grid (8), and (5) and capacitor (3) upper end socket are taken in protective housing (6) end.
In Fig. 2, be second kind of embodiment, breathing pipe (1) is located at big chamber (2) one side middle and upper parts, and capacitor (3) is located at the opposite side bottom of big chamber (2).
Be furnished with aperture (9) around protective housing (6) top, side, aperture (9) gross area is equal to or greater than capacitor (3) internal diameter cross-section area, and take over (5) and is threaded with capacitor (3) upper end at protective housing (6) end.
In Fig. 1, Fig. 2, big chamber (1) or capacitor (3) are transparent material.
Working principle of the present invention is: the present invention is installed near the three-way pipe of outlet pipe gas holder or the biomass pool, when the gas that is entered big chamber by breathing pipe produces malleation, the gas of big chamber with liquid toward pressing down, because the capacitor top communicates with atmosphere, air pressure in the big chamber surpasses barometric pressure, so the liquid in the big chamber just is pressed towards capacitor; Malleation design of the present invention generally is slightly larger than the design pressure of gas holder, biomass pool, so neither can increase equipment air pressure, and the liquid in the valve body is not washed out.If the design of original equipment air pressure is too high or do not do safe pressure limiting design, also malleation of the present invention can be reduced (promptly reducing the capacitor height), when reducing the equipment negative pressure, also play reduction equipment air pressure like this; If original equipment is not made relief valve design, also can the present invention make anti-positive negative pressure device.When negative pressure appears in the gas holder that connects breathing pipe or biomass pool, the big chamber that is connected also produces negative pressure simultaneously, because the air pressure of big chamber is lower than barometric pressure, therefore the liquid in the capacitor is just all sucked big chamber, then extraneous gas enters gas holder or biomass pool by pipe or aperture, protective housing, capacitor, big chamber, breathing pipe, makes in negative pressure is limited in very among a small circle.During the winter temperature subzero, can be anti-freeze with salt in valve.
Claims (4)
1. the anti-negative pressure of the gas device that transfinites comprises big chamber, capacitor, breathing pipe, it is characterized in that big chamber is a doll shape, and capacitor is independent cylindricality, and the capacitor bottom is located in the big chamber or the outside, and breathing pipe is located at big chamber bottom or side or top.
2. the anti-negative pressure of the gas device that transfinites according to claim 1, it is characterized in that said capacitor top is provided with protective housing, suitable for reading equal at the bottom of the protective housing with capacitor, the opposite side of protective housing bottom is provided with the pipe that communicates with atmosphere, there is capacitor angle suitable for reading dorsad the pipe upper end, there is grid the lower end of pipe, takes at the bottom of the protective housing with the capacitor upper end to flexibly connect.
3. the anti-negative pressure of the gas device that transfinites according to claim 1 is characterized in that being furnished with aperture around the top, side of said protective housing, and the aperture gross area is equal to or greater than capacitor internal diameter cross-section area.
4. as the anti-negative pressure of gas as described in claim 2 or 3 device that transfinites, it is characterized in that said big chamber or capacitor are transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102000638A CN102252164A (en) | 2011-07-07 | 2011-07-07 | Device for preventing air negative pressure from exceeding limit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102000638A CN102252164A (en) | 2011-07-07 | 2011-07-07 | Device for preventing air negative pressure from exceeding limit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102252164A true CN102252164A (en) | 2011-11-23 |
Family
ID=44979631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102000638A Pending CN102252164A (en) | 2011-07-07 | 2011-07-07 | Device for preventing air negative pressure from exceeding limit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102252164A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811436A (en) * | 2022-05-12 | 2022-07-29 | 神州能源集团股份有限公司 | Natural gas protector |
| CN114811436B (en) * | 2022-05-12 | 2024-06-04 | 神州能源集团股份有限公司 | Natural gas protection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060275141A1 (en) * | 2005-06-03 | 2006-12-07 | Anest Iwata Corporation | Method of feeding an inert gas and a system therefor |
| CN201297490Y (en) * | 2008-12-01 | 2009-08-26 | 青岛天人环境工程有限公司 | Anti-active and anti-negative respiration valve apparatus |
| CN201636523U (en) * | 2009-11-13 | 2010-11-17 | 北京中环瑞德环境工程技术有限公司 | Positive and negative pressure protective equipment of large-sized tank body |
| CN201836645U (en) * | 2010-09-28 | 2011-05-18 | 太平洋医材股份有限公司 | Medical negative pressure meter structure |
-
2011
- 2011-07-07 CN CN2011102000638A patent/CN102252164A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060275141A1 (en) * | 2005-06-03 | 2006-12-07 | Anest Iwata Corporation | Method of feeding an inert gas and a system therefor |
| CN201297490Y (en) * | 2008-12-01 | 2009-08-26 | 青岛天人环境工程有限公司 | Anti-active and anti-negative respiration valve apparatus |
| CN201636523U (en) * | 2009-11-13 | 2010-11-17 | 北京中环瑞德环境工程技术有限公司 | Positive and negative pressure protective equipment of large-sized tank body |
| CN201836645U (en) * | 2010-09-28 | 2011-05-18 | 太平洋医材股份有限公司 | Medical negative pressure meter structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811436A (en) * | 2022-05-12 | 2022-07-29 | 神州能源集团股份有限公司 | Natural gas protector |
| CN114811436B (en) * | 2022-05-12 | 2024-06-04 | 神州能源集团股份有限公司 | Natural gas protection device |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111123 |