CN202139053U - Leakage-resisting structure for valve body of nitrogen making machine - Google Patents
Leakage-resisting structure for valve body of nitrogen making machine Download PDFInfo
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- CN202139053U CN202139053U CN201120215414U CN201120215414U CN202139053U CN 202139053 U CN202139053 U CN 202139053U CN 201120215414 U CN201120215414 U CN 201120215414U CN 201120215414 U CN201120215414 U CN 201120215414U CN 202139053 U CN202139053 U CN 202139053U
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- adsorption tower
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- air inlet
- valve body
- nitrogen
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Abstract
The utility model discloses a leakage-resisting structure for a valve body of a nitrogen making machine, which is simple in structure and can effectively prevent backflow of air with high oxygen content so as to avoid reduction of nitrogen purity. The leakage-resisting structure for the valve body of the nitrogen making machine solves the technical problems that in the prior art, during the nitrogen making and pressure equalizing process, the air with the high oxygen content easily enters a to-be-adsorbed tower from the middle of an adsorption tower so that the nitrogen purity is reduced and the like. The leakage-resisting structure for the valve body of the nitrogen making machine comprises a left adsorption tower and a right adsorption tower which are in parallel connection with each other. Air inlet ends of both adsorption towers are connected with air inlets arranged at the bottoms of the adsorption towers respectively through air inlet electromagnetic valves, and exhaust ends of the both adsorption towers are connected with exhaust ports respectively through exhaust electromagnetic valves. Exhaust valves are respectively in parallel connection onto connecting pipelines corresponding to outlet ends of the two air inlet electromagnetic valves. The air inlet end of the left adsorption tower is connected with an adsorption cavity of the right adsorption tower through a pressure equalizing valve, the air inlet end of the right adsorption tower is connected with an adsorption cavity of the left adsorption tower through a pressure equalizing valve, and air inlet ends of the pressure equalizing valves are respectively provided with check valves.
Description
Technical field
The utility model relates to a kind of Nitrogen plant, relates in particular to a kind of gas that can effectively prevent and flows backwards and the Nitrogen plant valve body anti-leaking structure of reduction nitrogen gas purity.
Background technology
Nitrogen plant is according to the transformation absorption principle, adopts high-quality carbonaceous molecular sieve as sorbent material, under certain pressure, from air, produces nitrogen.Through purifying exsiccant pressurized air, the absorption of in adsorber, pressurizeing, decompression desorption are because aerodynamic effects; Rate of diffusion is much larger than nitrogen in the carbonaceous molecular sieve micropore for oxygen, and oxygen is by the carbonaceous molecular sieve preferentially adsorbed, and nitrogen is collected in gas phase; Form finished product nitrogen; Through being decompressed to normal pressure, the impurity such as oxygen that the sorbent material desorption is adsorbed are realized regeneration then.Two adsorption towers generally are set in system, and nitrogen is produced in tower absorption, another tower desorption and regeneration, and two tower alternate cycles are to realize the purpose of the high-quality nitrogen of continuous production.But existing Nitrogen plant is because pneumavalve switches frequent; Therefore the resistance to air loss to pneumavalve requires very high; Especially the resistance to air loss of pressure-balance valve under in, the hyperoxic air of part very easily gets into from the adsorption tower middle part and treats adsorption tower in pressure equalizing, thereby influences the purity of nitrogen
Chinese patent discloses a kind of Nitrogen plant (CN201618494U); It comprises adsorption tower A, adsorption tower B, gas holder and sound damper, and lead to arm A and adsorption tower A bottom, and lead to arm B and adsorption tower B bottom; The arm A the other end and the arm B the other end dock each other; Inlet pipe and arm A, arm B joint lead to, and are connected with under meter on the regeneration inlet pipe of leading to escape pipe A and escape pipe B, and this under meter outlet is led to through regeneration pneumatic tube and connecting leg; Be provided with the muffler that is connected with the gas holder output tube, the muffler the other end is connected with the regeneration pneumatic tube.Advantages such as though this device has compact construction, floor space is little, and convenient storage is moving exist hyperoxic air very easily to get into from the adsorption tower middle part equally and treat adsorption tower in the pressure equalizing, thereby reduce the technical problems such as purity of nitrogen.
Summary of the invention
The utility model has mainly provided a kind of simple in structure; The Nitrogen plant valve body anti-leaking structure that can effectively prevent the rich oxygen content air from flowing backwards and cause nitrogen gas purity to reduce; Solved in the system nitrogen pressure equalizing that exists in the prior art hyperoxic air and very easily got into and treat adsorption tower, thereby reduced the technical problem of nitrogen gas purity etc. from the adsorption tower middle part.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals: a kind of Nitrogen plant valve body anti-leaking structure; Comprise left adsorption tower and right adsorption tower that parallel connection is provided with; The inlet end of two adsorption towers links to each other through the inlet mouth of air inlet SV with the adsorption tower bottom respectively; Exhaust side links to each other with venting port through exhaust solenoid valve respectively; On the corresponding connecting tube of two air inlet electromagnetic valve outlet ends, be parallel with vent valve respectively; The inlet end of said left adsorption tower links to each other with the adsorbent chamber of right adsorption tower through pressure-balance valve, and the inlet end of said right adsorption tower links to each other with the adsorbent chamber of left adsorption tower through pressure-balance valve, and is respectively equipped with vacuum breaker at the inlet end of said pressure-balance valve.In device, down in the equaler road pressure-balance valve is installed, and at the inlet end of pressure-balance valve a vacuum breaker is installed respectively, like this when seepage appears in pressure-balance valve, vacuum breaker can prevent effectively that gas from flowing backwards back in the adsorption tower, guaranteed the purity of nitrogen.
As preferably, said air inlet SV and vent valve are pneumatic cut-off valve.Pneumatic cut-off valve is made up of pneumatic actuator and trip valve, and topworks generally is divided into piston-type and film type.Through receiving the signal of regulation meter, with cut-out, connection and the switching of control pipeline internal medium, have simple in structure, be quick on the draw, characteristics such as reliable in action.
As preferably, the exit end of said vent valve is connected on the sound damper.Sound damper can reduce exhaust noise, reduces sound pollution.
As preferably, said air inlet SV, exhaust solenoid valve, vent valve, pressure-balance valve and vacuum breaker link to each other with unit.Control the switch of each valve through unit, the automatic switchover working order, level of automation is high, the job stability of equipment and good reliability.
As preferably, said left adsorption tower and right adsorption tower are vertically fixed on the base.Two adsorption towers are fixed on the base, convenient storing.
Therefore; The Nitrogen plant valve body anti-leaking structure of the utility model has following advantage: in device, in the equaler road pressure-balance valve and vacuum breaker are installed down; Thus when seepage appears in pressure-balance valve, vacuum breaker has prevented effectively that promptly gas from flowing backwards back in the adsorption tower, guaranteed the purity of nitrogen; Sound damper can reduce exhaust noise, reduces sound pollution; Adsorption tower is fixed on the base, convenient storing.
Description of drawings:
Fig. 1 is the structural representation of the utility model Nitrogen plant valve body anti-leaking structure;
Fig. 2 is a vertical view shown in Figure 1.
Embodiment:
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment:
As shown in Figure 1, a kind of Nitrogen plant valve body anti-leaking structure of the utility model comprises a block length quadrate base 7; The adsorption tower of fixing two vertical structures on base 7, left adsorption tower 11 and right adsorption tower 12, two adsorption towers are arranged and vertical with base 7 along the length direction of base 7; The bottom of two adsorption towers is an inlet end; The top is exhaust side, and is as shown in Figure 2, and inlet end links to each other with inlet mouth 3 through air inlet SV 21 respectively; Exhaust side links to each other with venting port 4 through exhaust solenoid valve 22 respectively; The exit end of 5, two vent valves 5 of a vent valve of parallel connection is connected in parallel on the sound damper 8 respectively on the corresponding connecting tube of two air inlet SV 21 exit end, and wherein air inlet SV 21 is pneumatic cut-off valve with vent valve 5; The inlet end of left side adsorption tower 11 links to each other with the adsorbent chamber middle part of right adsorption tower 12 through a pressure-balance valve 9 again; The inlet end of right adsorption tower 12 links to each other with the adsorbent chamber middle part of left adsorption tower 11 through a pressure-balance valve 9 again, the vacuum breaker 10 of on the corresponding pipeline of the inlet end of two pressure-balance valves 9, connecting respectively, and the air inlet SV 21 on the device, exhaust solenoid valve 22, vent valve 5, pressure-balance valve 9 and vacuum breaker 10 all are connected on the unit.
During use, the pressurized air after the purification gets into the bottom of left adsorption tower 11 and upwards mobile from inlet mouth 3, and through molecular sieve the time, small amount of moisture, carbonic acid gas and oxygen are by molecular sieve adsorption, and the gas that flow to adsorption tower 11 tops is the product nitrogen gas that is obtained.The separation of oxygen, nitrogen is carried out between two adsorption towers in turn in the air; One of them adsorption tower is in the pressurization adsorbed state; Another adsorption tower then is in the decompression desorption state, in the pressure equalizing, when seepage appears in pressure-balance valve 9; Vacuum breaker 10 can prevent that gas from flowing backwards back in the adsorption tower, guaranteed the purity of nitrogen.
Specific embodiment described herein only is that the design to the utility model illustrates.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Claims (7)
1. Nitrogen plant valve body anti-leaking structure; Comprise left adsorption tower (11) and right adsorption tower (12) that parallel connection is provided with; The inlet end of two adsorption towers links to each other through the inlet mouth (3) of air inlet SV (21) with the adsorption tower bottom respectively; Exhaust side links to each other with venting port (4) through exhaust solenoid valve (22) respectively; On the corresponding connecting tube of two air inlet SVs (21) exit end, be parallel with vent valve (5) respectively; It is characterized in that: the inlet end of said left adsorption tower (11) links to each other with the adsorbent chamber of right adsorption tower (12) through pressure-balance valve (9), and the inlet end of said right adsorption tower (12) links to each other with the adsorbent chamber of left adsorption tower (11) through pressure-balance valve (9), and is respectively equipped with vacuum breaker (10) at the inlet end of said pressure-balance valve (9).
2. Nitrogen plant valve body anti-leaking structure according to claim 1 is characterized in that: said air inlet SV (21) and vent valve (5) are pneumatic cut-off valve.
3. Nitrogen plant valve body anti-leaking structure according to claim 1 and 2 is characterized in that: the exit end of said vent valve (5) is connected on the sound damper (8).
4. Nitrogen plant valve body anti-leaking structure according to claim 1 and 2 is characterized in that: said air inlet SV (21), exhaust solenoid valve (22), vent valve (5), pressure-balance valve (9) and vacuum breaker (10) link to each other with unit.
5. Nitrogen plant valve body anti-leaking structure according to claim 3 is characterized in that: said air inlet SV (21), exhaust solenoid valve (22), vent valve (5), pressure-balance valve (9) and vacuum breaker (10) link to each other with unit.
6. Nitrogen plant valve body anti-leaking structure according to claim 1 and 2 is characterized in that: said left adsorption tower (11) and right adsorption tower (12) are vertically fixed on the base (7).
7. Nitrogen plant valve body anti-leaking structure according to claim 5 is characterized in that: said left adsorption tower (11) and right adsorption tower (12) are vertically fixed on the base (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120215414U CN202139053U (en) | 2011-06-23 | 2011-06-23 | Leakage-resisting structure for valve body of nitrogen making machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120215414U CN202139053U (en) | 2011-06-23 | 2011-06-23 | Leakage-resisting structure for valve body of nitrogen making machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202139053U true CN202139053U (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120215414U Expired - Fee Related CN202139053U (en) | 2011-06-23 | 2011-06-23 | Leakage-resisting structure for valve body of nitrogen making machine |
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| CN (1) | CN202139053U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215304A (en) * | 2021-04-16 | 2022-10-21 | 无锡市中瑞空分设备有限公司 | Modular nitrogen making machine |
-
2011
- 2011-06-23 CN CN201120215414U patent/CN202139053U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215304A (en) * | 2021-04-16 | 2022-10-21 | 无锡市中瑞空分设备有限公司 | Modular nitrogen making machine |
| CN115215304B (en) * | 2021-04-16 | 2023-09-19 | 无锡市中瑞空分设备有限公司 | Modularized nitrogen making machine |
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| Date | Code | Title | Description |
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| 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: 20120208 Termination date: 20140623 |
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| EXPY | Termination of patent right or utility model |