CN202349588U - Piston-type positive-negative pressure protector - Google Patents
Piston-type positive-negative pressure protector Download PDFInfo
- Publication number
- CN202349588U CN202349588U CN2011204785972U CN201120478597U CN202349588U CN 202349588 U CN202349588 U CN 202349588U CN 2011204785972 U CN2011204785972 U CN 2011204785972U CN 201120478597 U CN201120478597 U CN 201120478597U CN 202349588 U CN202349588 U CN 202349588U
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- China
- Prior art keywords
- pipe
- negative pressure
- piston
- urceolus
- protective gear
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Abstract
The utility model discloses a piston-type positive-negative pressure protector which comprises a positive pressure protector and a negative pressure protector. The positive pressure protector comprises a first outer barrel; a first inlet pipe and a first outlet pipe are connected onto the first outer barrel; a first piston is arranged in the first outer barrel; the first inlet pipe is connected with a first condensing tank which is connected with a protected device; the first outlet pipe is connected with an evacuating pipe; and a chimney hood is arranged at the outlet end of the evacuating pipe. The negative pressure protector comprises a second outer barrel; a second inlet pipe and a second outlet pipe are connected onto the second outer barrel; a second piston is arranged in the second outer barrel; the second inlet pipe is an air inlet pipe; the second outlet pipe is connected with a second condensing tank which is connected with the protected device. The pressure constancy of the protected device is maintained by aid of up-and-down motion of the piston in the outer barrel, and the piston-type positive-negative pressure protector has the advantages of low in investment cost, simple in operation and maintenance, and the like.
Description
Technical field
The utility model relates to a kind of positive negative pressure protector, is specifically related to the positive negative pressure protector of a kind of piston type.
Background technique
The main type of positive negative pressure protector has: positive pressure protection device, negative pressure protector, positive negative pressure protector integrated and positive pressure protection device and the external positive negative pressure protector that is connected to form of negative pressure protector.At present positive negative pressure protector all is to keep constant compression force through liquid, yet there are evaporable characteristics in liquid, and pressure can not keep constant after fluid loss, needs fluid infusion.The fluid infusion program is loaded down with trivial details behind the liquid evaporation, and the positive negative pressure protector of placing in the high-altitude especially is difficult to operation, and it acts on unstable, causes gas leakage easily.The positive negative pressure protector of common outdoor placement need be considered antifreeze problem in the north, and need change antifreeze liquid winter, need be replaced with water or other fluid summer, and complex operation and cost are high.
The model utility content
In order to solve the problems of the technologies described above, the utility model provides a kind of piston type positive negative pressure protector.
Its technical solution is:
The positive negative pressure protector of a kind of piston type comprises positive pressure protection device and negative pressure protective gear, and the positive pressure protection device comprises first urceolus; Connection first is gone into pipe and is gone out pipe with first on first urceolus; In first urceolus and go into pipe and first first and go out between the pipe first piston is set, first goes into pipe connection first cooling cylinder, and first cooling cylinder connects by protective gear; First goes out pipe connects emptying pipe, at the outlet end of emptying pipe chimney cowl is set; The negative pressure protective gear comprises second urceolus; On second urceolus, connect second and go into pipe and go out pipe with second, in second urceolus and go into pipe and second second and go out between the pipe second piston is set, second to go into pipe be suction tude; Second goes out pipe connects second cooling cylinder, and second cooling cylinder connects by protective gear.
The useful technique effect of the utility model is:
The utility model keeps constant by the protective gear internal pressure through piston moving up and down in urceolus, removes the problem that keeps constant compression force to bring through liquid from, has constant pressure, an advantage such as investment cost is low and Operation and Maintenance is simple.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Fig. 1 is for connecting by the structural representation of the positive pressure protection device of protective gear;
Fig. 2 is for connecting by the structural representation of the negative pressure protective gear of protective gear.
Embodiment
The positive negative pressure protector of a kind of piston type comprises positive pressure protection device and negative pressure protective gear, and the positive pressure protection device is connected respectively with by protective gear with the negative pressure protective gear.
As shown in Figure 1; The positive pressure protection device comprises first urceolus 1; Connect first in the left side central portion of first urceolus 1 and go into pipe 2, connect first in the right upper portion of first urceolus 1 and go out pipe 3, first urceolus 1 in and go into pipe 2 and first first and first piston 4 is set between going out to manage 3.First goes into pipe 2 connects 5 connections of first cooling cylinder, 5, the first cooling cylinders by protective gear.First goes out pipe 3 connects emptying pipe 6, at the top exit end of emptying pipe 6 chimney cowl 7 and chimney cowl support 8 is set.
As shown in Figure 2; The negative pressure protective gear comprises second urceolus 9; Connect second in the left side central portion of second urceolus 9 and go into pipe 10, connect second in the right upper portion of second urceolus 9 and go out pipe 11, second urceolus 9 in and go into pipe 10 and second second and second piston 12 is set between going out to manage 11.Second goes into pipe 10 is suction tude, and second goes out pipe 11 connects 13 connections of second cooling cylinder, 13, the second cooling cylinders by protective gear.
Setting pressure table on first urceolus and second urceolus.
When gas pressure is excessive in by protective gear; With first piston in the positive pressure protection device that is connected by protective gear by jack-up upwards, gone into through first cooling cylinder, first successively by the gas in the protective gear that pipe, first goes out pipe and emptying pipe enters in the atmosphere.After partly being discharged by the gas in the protective gear, pressure reduces, and first piston moves down under the self gravitation effect, keeps by the protective gear internal pressure constant.
Gas pressure hour in by protective gear; With second piston in the negative pressure protective gear that is connected by protective gear by jack-up upwards; Outside air goes into through second successively that pipe, second goes out pipe and second cooling cylinder gets into by in the protective gear, keeps by the protective gear internal pressure constant.
Need to prove that under the instruction of this specification, any equivalents that those skilled in the art have done, or obvious variant all should be within the protection domains of the utility model.
Claims (1)
1. the positive negative pressure protector of piston type comprises positive pressure protection device and negative pressure protective gear, and it is characterized in that: the positive pressure protection device comprises first urceolus; Connection first is gone into pipe and is gone out pipe with first on first urceolus; In first urceolus and go into pipe and first first and go out between the pipe first piston is set, first goes into pipe connection first cooling cylinder, and first cooling cylinder connects by protective gear; First goes out pipe connects emptying pipe, at the outlet end of emptying pipe chimney cowl is set; The negative pressure protective gear comprises second urceolus; On second urceolus, connect second and go into pipe and go out pipe with second, in second urceolus and go into pipe and second second and go out between the pipe second piston is set, second to go into pipe be suction tude; Second goes out pipe connects second cooling cylinder, and second cooling cylinder connects by protective gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204785972U CN202349588U (en) | 2011-11-26 | 2011-11-26 | Piston-type positive-negative pressure protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204785972U CN202349588U (en) | 2011-11-26 | 2011-11-26 | Piston-type positive-negative pressure protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202349588U true CN202349588U (en) | 2012-07-25 |
Family
ID=46538595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204785972U Expired - Fee Related CN202349588U (en) | 2011-11-26 | 2011-11-26 | Piston-type positive-negative pressure protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202349588U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235616A (en) * | 2014-09-23 | 2014-12-24 | 成都安美固丹田新能源科技有限公司 | Positive-negative pressure protector |
| CN106754279A (en) * | 2016-11-28 | 2017-05-31 | 安阳工学院 | A kind of biogas anhydrous positive/negative pressure protection device of dual fail-safe and its guard method |
| CN109762720A (en) * | 2019-03-18 | 2019-05-17 | 嘉诚环保工程有限公司 | Improved anaerobic fermentation system |
| CN110857751A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Gas storage device |
-
2011
- 2011-11-26 CN CN2011204785972U patent/CN202349588U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235616A (en) * | 2014-09-23 | 2014-12-24 | 成都安美固丹田新能源科技有限公司 | Positive-negative pressure protector |
| CN106754279A (en) * | 2016-11-28 | 2017-05-31 | 安阳工学院 | A kind of biogas anhydrous positive/negative pressure protection device of dual fail-safe and its guard method |
| CN110857751A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Gas storage device |
| CN110857751B (en) * | 2018-08-23 | 2021-05-28 | 中国石油天然气股份有限公司 | Gas storage device |
| CN109762720A (en) * | 2019-03-18 | 2019-05-17 | 嘉诚环保工程有限公司 | Improved anaerobic fermentation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20141126 |
|
| EXPY | Termination of patent right or utility model |