CN204358429U - A kind of positive/negative pressure protection device - Google Patents
A kind of positive/negative pressure protection device Download PDFInfo
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- CN204358429U CN204358429U CN201420740279.2U CN201420740279U CN204358429U CN 204358429 U CN204358429 U CN 204358429U CN 201420740279 U CN201420740279 U CN 201420740279U CN 204358429 U CN204358429 U CN 204358429U
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Abstract
The utility model relates to gas shield device, specifically a kind of positive/negative pressure protection device with double protection functions, positive pressure protection cavity and negative pressure protection cavity is divided into by dividing plate in cavity, all antifreeze liquid is housed in positive pressure protection cavity and negative pressure protection cavity, suction tude is arranged in positive pressure protection cavity, one end to be arranged on dividing plate and to protect cavity to communicate with negative pressure, and the other end inserts in the antifreeze liquid in positive pressure protection cavity; Gas access flange is arranged on cavity, and one end is connected with protected equipment, and the other end and negative pressure protect cavity to communicate; One end of malleation scale and negative pressure scale is located in cavity, and the other end is passed by cavity, be connected with ambient atmosphere, and malleation scale and negative pressure scale protect cavity to be connected with positive pressure protection cavity and negative pressure respectively; Air outlet is arranged on cavity, is connected with positive pressure protection cavity.The utility model has dual positive pressure protection and negative pressure protective function, can keep protected device internal pressure in allowed band.
Description
Technical field
The utility model relates to gas shield device, specifically a kind of positive/negative pressure protection device with double protection functions.
Background technique
Along with country is to the more and more attention of new energy and environmental pollution, large-sized biogas engineering is surging forward, and the requirement for corollary equipment professional in biogas engineering is also more and more higher.Biogas produce process in, due to ferment itself or external environment changes time, can cause biogas fermentation device and biogas storage device internal pressure change, cause potential safety hazard.When biogas fermentation device and biogas storage device internal pressure increase to over rated pressure, a part of gas that needs to drain carrys out the normal pressure of holding means; When being reduced to rated pressure under biogas fermentation device and biogas storage device internal pressure, carry out protective gear with regard to needing to suck certain air.The positive/negative pressure protection device that current biogas engineering adopts has many types, is the principle utilizing water seal all nothing more than, arranges two cavitys, by the adjustment of the inside liquid level, reaches the object of positive/negative-pressure adjustment.This kind of ubiquitous problem of mode utilizing water-seal principle to realize positive/negative-pressure adjustment is:
1. fluctuation of service, part positive/negative pressure protector can lose protective function after a superpressure;
2., when using in cold area, have icing phenomenon of freezing;
3. anticorrosion process (material) is simple, just gets rusty, affect device and normally run in the short time;
4. can only play the effect of first class of protection, can not the phenomenon of fluid low in Timeliness coverage device.
Above-mentioned Problems existing causes the phenomenons such as weak effect, sensitivity is low, the life-span is short.So, in order to ensure that the long-term normal of engineering is run, be eager to propose a kind ofly to use for biogas engineering, effective, that there is multiple protective, antifreeze positive/negative pressure protector.
Model utility content
The purpose of this utility model is to provide a kind of positive/negative pressure protection device.This positive/negative pressure protection device has dual positive pressure protection and dual negative pressure protective function; once the first class of protection function of malleation or negative pressure inoperative after; second class protection also can serve the same role, and can keep biogas fermentation device and biogas storage device internal pressure in allowed band.
The purpose of this utility model is achieved through the following technical solutions:
The utility model comprises cavity, gas access flange, suction tude, malleation scale, negative pressure scale and air outlet, wherein be divided into positive pressure protection cavity and negative pressure protection cavity by dividing plate in cavity, all antifreeze liquid is housed in described positive pressure protection cavity and negative pressure protection cavity, described suction tude is arranged in positive pressure protection cavity, one end to be arranged on described dividing plate and to protect cavity to communicate with described negative pressure, and the other end inserts in the antifreeze liquid in positive pressure protection cavity; Described gas access flange is arranged on described cavity, and one end is connected with protected equipment, and the other end and described negative pressure protect cavity to communicate; One end of described malleation scale and negative pressure scale is located in cavity, and the other end is passed by described cavity, is connected with ambient atmosphere, and this malleation scale and negative pressure scale protect cavity to be connected with positive pressure protection cavity and negative pressure respectively; Described air outlet is arranged on cavity, is connected with described positive pressure protection cavity.
Wherein: in described positive pressure protection cavity, the liquid level of antifreeze liquid protects the liquid level of antifreeze liquid in cavity higher than negative pressure, the other end of described suction tude is arranged in below the liquid level of negative pressure protection cavity antifreeze liquid; The through hole that described malleation scale and negative pressure scale are offered respectively by bottom protects cavity to be connected with positive pressure protection cavity and negative pressure; The other end of described malleation scale and negative pressure scale is provided with scale protective housing; The volume of described positive pressure protection cavity is greater than the volume of negative pressure protection cavity; Described air outlet is arranged on the top of positive pressure protection cavity; The bottom of described positive pressure protection cavity and negative pressure protection cavity is respectively equipped with liquid outlet; Described cavity is provided with the liquid level sensor detecting antifreeze liquid level condition; Described cavity is provided with the pressure gauge of test chamber internal pressure.
Advantage of the present utility model and good effect are:
1. the utility model has dual positive pressure protection and dual negative pressure protective function; once the first class of protection function of malleation or negative pressure inoperative after; second class protection also can serve the same role, and can keep biogas fermentation device and biogas storage device internal pressure in allowed band.
2. positive and negative pressure protection cavity of the present utility model is built with antifreeze liquid, guarantees that the liquid in cavity does not freeze.
3. cavity of the present utility model has installed liquid level sensor, understood the level condition in device at any time, guarantee that in device, liquid level is normal.
4. the utility model protected effect is good, highly sensitive.
Accompanying drawing explanation
Fig. 1 is structural front view of the present invention;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is the left view of Fig. 1;
Fig. 4 is the A-A sectional view in Fig. 2;
Wherein: 1 is air outlet, 2 is positive pressure protection cavity, and 3 is antifreeze liquid A; 4 is liquid outlet, and 5 is negative pressure scale, and 6 is malleation scale; 7 is antifreeze liquid B; 8 is negative pressure protection cavity, and 9 is gas access flange, and 10 is liquid level sensor; 11 is pressure gauge; 12 is suction tude, and 13 is scale protective housing, and 14 is dividing plate.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in figures 1-4, the utility model comprises cavity, gas access flange 9, suction tude 12, malleation scale 6, negative pressure scale 5, air outlet 1, pressure gauge 11 and liquid level sensor 10, wherein be divided into positive pressure protection cavity 2 and negative pressure protection cavity 8 by dividing plate 14 in cavity, one end of malleation scale 6 and negative pressure scale 5 is located in cavity, and protects cavity 8 to be connected with positive pressure protection cavity 2 and negative pressure respectively by the through hole that this end is offered; The other end of malleation scale 6 and negative pressure scale 5 is passed by cavity, is connected with ambient atmosphere, and is provided with scale protective housing 13 on the other end of malleation scale 6 and negative pressure scale 5.
In positive pressure protection cavity 2 and negative pressure protection cavity 8, antifreeze liquid A3, antifreeze liquid B7 are housed respectively, guarantee that the liquid in cavity does not freeze; In positive pressure protection cavity 2, the liquid level of antifreeze liquid A3 protects the liquid level of antifreeze liquid B7 in cavity 8 higher than negative pressure.Dividing plate 14 has a through hole; suction tude 12 is arranged in positive pressure protection cavity 2; one end is arranged on dividing plate 14, by the through hole on dividing plate 14 and negative pressure protects cavity 8 to communicate; the other end of suction tude 12 inserts in the antifreeze liquid A3 in positive pressure protection cavity 2, and the other end of suction tude 12 is arranged in below the liquid level of negative pressure protection cavity 8 antifreeze liquid B7.Gas access flange 9 is arranged on cavity, and one end is connected with protected equipment, and the other end and negative pressure protect cavity 8 to communicate.Be provided with air outlet 1 at the top of positive pressure protection cavity 2, this air outlet 1 is connected with positive pressure protection cavity 2.
The volume of positive pressure protection cavity 2 is greater than the volume of negative pressure protection cavity 8, is respectively equipped with liquid outlet 4 in the bottom of positive pressure protection cavity 2 and negative pressure protection cavity 8.Cavity is provided with the pressure gauge 11 of test chamber internal pressure, liquid level sensor 10 is also installed, detect the level condition of antifreezing liquid at any time, according to the liquid level information of feedback, carry out the work such as fluid infusion timely.
Working principle of the present utility model is:
The utility model is fixed on biogas fermentation device and biogas storage device, the air inlet pipeline of device and gas access flange 9 is connected, and installs antifreezing liquid A3, B7 respectively, connect the remote transmitting system of liquid level sensor 10 in positive and negative pressure protection cavity 2,8.
Biogas fermentation device and biogas storage device etc. need the equipment of protection when normally running, and the utility model utilizes the water seal at gas access flange 9 place to seal gas, and the utility model does not participate in work.When protected equipment internal pressure raises suddenly, the antifreeze liquid A3 in suction tude 12 in positive pressure protection cavity 2 extrudes by the pressure of gas access flange 9, and gas enters positive pressure protection cavity 2; By the air outlet 1 on positive pressure protection cavity 2, excessive gas is entered air afterwards; By the time after cavity internal and external pressure balance, the air outlet hole of biogas pipe seals gas by fluid-tight again, plays the effect of protection, is one-level positive pressure protection herein.When in positive pressure protection device can not normally Exhaust Gas when, along with the rising gradually of positive pressure protection cavity 2 internal pressure, by positive pressure protection cavity 2 antifreeze liquid A3 be pressed into malleation scale 6, gas can be discharged by malleation scale 6; Antifreeze liquid B7, along with the rising of pressure, is pressed in negative pressure scale 5 by the antifreeze liquid B7 in the cavity 8 of negative pressure protection simultaneously, and gas enters negative pressure protection cavity 8, and also can discharge from negative pressure scale 5, be secondary positive pressure protection herein.When protected equipment internal pressure reaches negative pressure, under the effect of air, the antifreeze liquid B7 in cavity 8 negative pressure is protected to extrude; replenish air is in protected equipment; maintain pressure balance, play the effect of negative pressure protection, be the protection of one-level negative pressure herein.When normally not filling into air in negative pressure protection cavity 8, air can enter positive pressure protection cavity 2 by malleation scale 6 or air outlet 1, adds in protected equipment afterwards, maintains pressure balance, plays the effect of secondary negative pressure protection.The liquid level sensor 10 that cavity is arranged, the level condition constantly in test chamber, have variation to arrive liquid level lower bound once liquid level, realize lower bound liquid level warning, staff carries out fluid infusion.
Antifreeze liquid of the present utility model is commercial products, purchases in DF-2, Great Wall multi-effective antifreeze solution.
The utility model has duplicate protection effect, and firsts and seconds protection can play a protective role simultaneously, also can play a protective role separately.
Claims (9)
1. a positive/negative pressure protection device, it is characterized in that: comprise cavity, gas access flange (9), suction tude (12), malleation scale (6), negative pressure scale (5) and air outlet (1), wherein be divided into positive pressure protection cavity (2) and negative pressure protection cavity (8) by dividing plate (14) in cavity, all antifreeze liquid is housed in described positive pressure protection cavity (2) and negative pressure protection cavity (8), described suction tude (12) is arranged in positive pressure protection cavity (2), one end is arranged on described dividing plate (14), and protect cavity (8) to communicate with described negative pressure, the other end inserts in the antifreeze liquid in positive pressure protection cavity (2), described gas access flange (9) is arranged on described cavity, and one end is connected with protected equipment, and the other end and described negative pressure protect cavity (8) to communicate, one end of described malleation scale (6) and negative pressure scale (5) is located in cavity, the other end is passed by described cavity, is connected with ambient atmosphere, and this malleation scale (6) and negative pressure scale (5) protect cavity (8) to be connected with positive pressure protection cavity (2) and negative pressure respectively, described air outlet (1) is arranged on cavity, is connected with described positive pressure protection cavity (2).
2. by positive/negative pressure protection device according to claim 1; it is characterized in that: in described positive pressure protection cavity (2), the liquid level of antifreeze liquid protects the liquid level of antifreeze liquid in cavity (8) higher than negative pressure, the other end of described suction tude (12) is arranged in below the liquid level of negative pressure protection cavity (8) antifreeze liquid.
3., by positive/negative pressure protection device according to claim 1, it is characterized in that: the through hole that described malleation scale (6) and negative pressure scale (5) are offered respectively by bottom protects cavity (8) to be connected with positive pressure protection cavity (2) and negative pressure.
4., by the positive/negative pressure protection device described in claim 1 or 2, it is characterized in that: the other end of described malleation scale (6) and negative pressure scale (5) is provided with scale protective housing (13).
5. by positive/negative pressure protection device according to claim 1, it is characterized in that: the volume of described positive pressure protection cavity (2) is greater than the volume of negative pressure protection cavity (8).
6., by positive/negative pressure protection device according to claim 1, it is characterized in that: described air outlet (1) is arranged on the top of positive pressure protection cavity (2).
7. by positive/negative pressure protection device according to claim 1, it is characterized in that: the bottom of described positive pressure protection cavity (2) and negative pressure protection cavity (8) is respectively equipped with liquid outlet (4).
8. by positive/negative pressure protection device according to claim 1, it is characterized in that: described cavity is provided with the liquid level sensor (10) detecting antifreeze liquid level condition.
9., by positive/negative pressure protection device according to claim 1, it is characterized in that: the pressure gauge (11) described cavity being provided with test chamber internal pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420740279.2U CN204358429U (en) | 2014-11-28 | 2014-11-28 | A kind of positive/negative pressure protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420740279.2U CN204358429U (en) | 2014-11-28 | 2014-11-28 | A kind of positive/negative pressure protection device |
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| CN204358429U true CN204358429U (en) | 2015-05-27 |
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| CN201420740279.2U Active CN204358429U (en) | 2014-11-28 | 2014-11-28 | A kind of positive/negative pressure protection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105936874A (en) * | 2016-06-21 | 2016-09-14 | 胡超 | Service platform device of fermentation reaction equipment |
| CN106479867A (en) * | 2016-12-23 | 2017-03-08 | 山东百川同创能源有限公司 | A kind of positive/negative pressure protection device and marsh-gas fermentation tank |
| CN107606472A (en) * | 2017-10-20 | 2018-01-19 | 上海林海生态技术股份有限公司 | A kind of gas tiny structure detection and safety dumping method |
-
2014
- 2014-11-28 CN CN201420740279.2U patent/CN204358429U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105936874A (en) * | 2016-06-21 | 2016-09-14 | 胡超 | Service platform device of fermentation reaction equipment |
| CN106479867A (en) * | 2016-12-23 | 2017-03-08 | 山东百川同创能源有限公司 | A kind of positive/negative pressure protection device and marsh-gas fermentation tank |
| CN106479867B (en) * | 2016-12-23 | 2018-12-07 | 山东百川同创能源有限公司 | A kind of positive/negative pressure protection device and marsh-gas fermentation tank |
| CN107606472A (en) * | 2017-10-20 | 2018-01-19 | 上海林海生态技术股份有限公司 | A kind of gas tiny structure detection and safety dumping method |
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