CN101683582B - Molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower - Google Patents
Molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower Download PDFInfo
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- CN101683582B CN101683582B CN2008102004069A CN200810200406A CN101683582B CN 101683582 B CN101683582 B CN 101683582B CN 2008102004069 A CN2008102004069 A CN 2008102004069A CN 200810200406 A CN200810200406 A CN 200810200406A CN 101683582 B CN101683582 B CN 101683582B
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Abstract
The invention relates to a molecular sieve compressing device of a pressure swing adsorption air separation unit adsorption tower. The device comprises an air cylinder (7) fixed at the top of the adsorption tower (2) and a hydraulic cylinder arranged on the air cylinder (7), wherein the piston shaft of the air cylinder and the piston shaft of hydraulic cylinder are one shaft. The beneficial effect of the invention is that the dual function of the hydraulic cylinder and air cylinder can ensure that the air cylinder piston can not move upward so as to press molecular sieve continuously and reduce the creepage of molecular sieve to the minimum; in addition, the molecular sieve compressing device of the invention has the advantages of simple structure, compact appearance and low cost.
Description
Technical field
The present invention relates to a kind of pressure swing adsorption air separation unit adsorption tower, relate in particular to the molecular sieve compressing device of this adsorption tower.
Background technology
In the adsorption tower of pressure swing adsorption air separation plant, be under pressure the washing away of gases at high pressure of periodically pulsing of molecular sieve is in alternation wriggling state all the time.The wriggling of molecular sieve will acceleration molecular the efflorescence of sieve, thereby the performance and the service life of reducing air separation plant.Therefore how compressing molecular sieve, reduce the fierce degree of wriggling to guarantee molecular sieve when air separation plant normally moves as far as possible, is the technical problem that must solve on the adsorption tower structure.
The useful filler of the hold down gag that uses in the prior art compresses, compress and with modes such as air cylinder device compress with spring assembly.The adsorption tower that wherein utilizes cylinder to compress once was awarded utility model patent, and its patent No. is 98215653.7, and patent name is " the gas separation compresses packed tower automatically ".
But the common issue with that above various structure exists is: itself all have compressibility owing to compress the medium (filler, spring, gas etc.) of usefulness, steam-cylinder piston can be beated along with the pulsation of pressure medium in the adsorption tower when causing hold down gag work, can't constant compacting molecular sieve, this situation is especially serious when specification of equipment is big.In order to reduce this severe degree of beating, a kind of method is to strengthen the clamping cylinder effective area, to improve operating pressure, but can cause the drawback that the hold down gag volume is too huge, the device fabrication cost increases and energy resource consumption greatly increases so on the one hand, can not essence solve the problem that steam-cylinder piston is beated on the other hand.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention includes: the cylinder on top that is fixed on adsorption tower; Also comprise: a hydraulic cylinder that is placed on the cylinder; The axis of the piston of described cylinder and the axis of the piston of hydraulic cylinder are same axises.
Compared with prior art, the invention has the beneficial effects as follows: by the double action of hydraulic cylinder and cylinder, can guarantee steam-cylinder piston can't on move, thereby guarantee the constant molecular sieve that compresses, the wriggling of molecular sieve is reduced to a minimum.The present invention simultaneously exists relatively simple for structure, compact appearance, lower-cost advantage.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
As seen from Figure 1: the present invention includes: the cylinder 7 on top that is fixed on adsorption tower 2; Also comprise: a hydraulic cylinder that is placed on the cylinder 7; The axis of the piston of described cylinder and the axis of the piston of hydraulic cylinder are same axises;
Described cylinder 7 is to be fixed on the top of adsorption tower 2 by first bolt 4, and push rod 3 lower ends contact with molecular sieve pressing plate 1 activity in the adsorption tower in the cylinder, upper end and steam-cylinder piston 8 movable contacts; Be provided with between upper chamber of air cylinder 9 and the adsorption tower 2 and open and close gas circuit 32, lower chamber of air cylinder 6 is communicated with atmosphere by hole 33;
Be provided with hydraulic cylinder at cylinder 7 tops; Described hydraulic cylinder mainly by base 10, cylinder body 12, piston rod 13, hydraulic cylinder piston 16, upper cylinder cover 19, take blame for others and cover 21 and form; Wherein: hydraulic cylinder piston 16 is separated into epicoele 27 and cavity of resorption 14 two parts with the cavity of cylinder, base 10 is connected fastening with cylinder body 12 by bolt 11, piston rod 13 tops are connected fastening with hydraulic piston 16 by second bolt 29, the bottom is connected fastening by the 3rd bolt 5 with steam-cylinder piston 8; Hydraulic cylinder inside, piston rod 13 upper end is provided with to guarantee that hydraulic oil can only flow to epicoele and one-way valve structures that can not reverse flow by the hydraulic cylinder cavity of resorption;
Described one-way valve structures is made up of oil return line 15, first steel ball 17, first spring 30, first spring base 28;
On hydraulic cylinder, also be provided with by stop valve 26, second steel ball 23, second spring 20, second spring base 18 constitute with convenient to hydraulic cylinder refuel or oil extraction give oil-discharging circuit;
The hydraulic cylinder top take blame for others cover 21 and sealing ring 25 install fastening by the 4th bolt 24; To guarantee hydraulic cylinder sealing, guarantee that hydraulic oil is not contaminated.
Workflow of the present invention is:
In the time will refueling for hydraulic cylinder, hydraulic oil is injected chamber 22, hydraulic cylinder top, injecting gases at high pressure by gas circuit 32 for then upper chamber of air cylinder 9 impels cylinder piston 8 descending by piston rod 13 drive hydraulic cylinder pistons 16, hydraulic cylinder epicoele 27 forms negative pressure of vacuum, makes to push up to enter hydraulic cylinder epicoele 27 after chamber hydraulic oil backs down second steel ball 23.When piston moves to the bottom, open stop valve 26, injecting gases at high pressure for lower chamber of air cylinder 6 by through hole 33 then impels cylinder piston 8 to move upward by piston rod 13 drive hydraulic cylinder pistons 16, hydraulic oil also can inject hydraulic cylinder cavity of resorption 14 by oil circuit 31 naturally, can guarantee twice or thrice that and so forth hydraulic cylinder can be full of oil.
After filling it up with oil, turn on stop valve 26, inject pressure-air from lower chamber of air cylinder 6 by pore 33 then, it is up to make steam-cylinder piston 8 drive hydraulic cylinder piston 16 by piston rod 13, hydraulic cylinder cavity of resorption 14 forms negative pressure of vacuum, make hydraulic cylinder epicoele 27 hydraulic oil enter hydraulic cylinder cavity of resorption 14, make hydraulic piston 16 can go upward to the work initial bit through oil circuit 31.
After the present invention is installed on the equipment, at first make hydraulic piston go upward to the work initial bit, close stop valve then.When starting working, gases at high pressure inject upper chamber of air cylinder by gas circuit by adsorption tower, it is descending to make that steam-cylinder piston drives hydraulic piston by piston rod, the hydraulic cylinder epicoele forms negative pressure of vacuum, make hydraulic cylinder cavity of resorption hydraulic oil back down first steel ball and enter the hydraulic cylinder epicoele, like this cylinder piston just can descending drive pressing plate to compress molecular sieve.Because this moment, hydraulic oil can not flow into cavity of resorption from the hydraulic cylinder epicoele, and hydraulic oil itself can not be compressed, so piston will hold out against pressing plate with constant compacting molecular sieve by push rod always.
Claims (6)
1. the molecular sieve compressing device of a pressure swing adsorption air separation unit adsorption tower comprises: the cylinder (7) on top that is fixed on adsorption tower (2); It is characterized in that also comprising: a hydraulic cylinder that is placed on the cylinder (7); The axis of the piston of described cylinder and the axis of the piston of hydraulic cylinder are same axises.
2. the molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower according to claim 1, it is characterized in that: described cylinder (7) is to be fixed on the top of adsorption tower (2) by first bolt (4), push rod (3) lower end contacts with molecular sieve pressing plate (1) activity in the adsorption tower in the cylinder, and the upper end contacts with steam-cylinder piston (8) is movable; Be provided with between upper chamber of air cylinder (9) and the adsorption tower (2) and open and close gas circuit (32), lower chamber of air cylinder (6) is communicated with atmosphere by hole (33).
3. the molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower according to claim 1 is characterized in that: be provided with hydraulic cylinder at cylinder (7) top; Described hydraulic cylinder mainly is made up of base (10), cylinder body (12), piston rod (13), hydraulic cylinder piston (16), upper cylinder cover (19), the lid (21) of taking blame for others; Wherein: hydraulic cylinder piston (16) is separated into epicoele (27) and cavity of resorption (14) two parts with the cavity of cylinder, base (10) is connected fastening with cylinder body (12) by bolt (11), piston rod (13) top is connected fastening with hydraulic piston (16) by second bolt (29), the bottom is connected fastening by the 3rd bolt (5) with steam-cylinder piston (8); Hydraulic cylinder inside, piston rod (13) upper end is provided with to guarantee that hydraulic oil can only flow to epicoele and one-way valve structures that can not reverse flow by the hydraulic cylinder cavity of resorption.
4. the molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower according to claim 3, it is characterized in that: described one-way valve structures is made up of oil return line (15), first steel ball (17), first spring (30), first spring base (28).
5. the molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower according to claim 1 is characterized in that: on hydraulic cylinder, also be provided with by stop valve (26), second steel ball (23), second spring (20), second spring base (18) constitute with convenient to hydraulic cylinder refuel or oil extraction give oil-discharging circuit.
6. the molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower according to claim 1 is characterized in that: take blame for others lid (21) and sealing ring (25) of hydraulic cylinder top installed fastening by the 4th bolt (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102004069A CN101683582B (en) | 2008-09-24 | 2008-09-24 | Molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102004069A CN101683582B (en) | 2008-09-24 | 2008-09-24 | Molecular sieve compressing device of pressure swing adsorption air separation unit adsorption tower |
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| CN101683582A CN101683582A (en) | 2010-03-31 |
| CN101683582B true CN101683582B (en) | 2011-09-21 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104261352B (en) * | 2014-10-12 | 2016-01-13 | 吉林市卓欣康泰医疗科技有限公司 | A kind of medical oxygen producing main frame air-cylinder type molecular sieve compressing system and using method thereof |
| CN109443819B (en) * | 2018-12-13 | 2023-09-12 | 常州纺织服装职业技术学院 | Loading device of stamping machine tool |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2933544Y (en) * | 2006-08-09 | 2007-08-15 | 王业勤 | Horizontal adsorption tower molecular sieve compacting device |
| CN201023020Y (en) * | 2007-03-09 | 2008-02-20 | 杭州天利空分设备制造有限公司 | Adsorption tower for composite bed structure |
| CN201279429Y (en) * | 2008-09-24 | 2009-07-29 | 上海瑞气气体设备有限公司 | Molecular sieve compressing device of pressure swing adsorption air-separation device adsorption tower |
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2008
- 2008-09-24 CN CN2008102004069A patent/CN101683582B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2933544Y (en) * | 2006-08-09 | 2007-08-15 | 王业勤 | Horizontal adsorption tower molecular sieve compacting device |
| CN201023020Y (en) * | 2007-03-09 | 2008-02-20 | 杭州天利空分设备制造有限公司 | Adsorption tower for composite bed structure |
| CN201279429Y (en) * | 2008-09-24 | 2009-07-29 | 上海瑞气气体设备有限公司 | Molecular sieve compressing device of pressure swing adsorption air-separation device adsorption tower |
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Owner name: SHANGHAI TONGXUE INDUSTRY CO., LTD. Free format text: FORMER OWNER: SHANGHAI RICH GAS EQUIPMENT CO., LTD. Effective date: 20150129 |
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Effective date of registration: 20150129 Address after: Jinshan District Wei Chang Road 201505 Shanghai City No. 293 Building 2 room 6105 Patentee after: SHANGHAI TONGXUE INDUSTRIAL CO., LTD. Address before: 201508 Shanghai Jinshan District Shanyang town Ting Wei Road No. 2099 Patentee before: Shanghai Rich Gas Equipment Co., Ltd. |
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Effective date of registration: 20200810 Address after: Room 7717, building 2, No. 293, Weichang Road, Jinshan District, Shanghai, 201508 Patentee after: Shanghai Ruiqi Gas Technology Co., Ltd Address before: Jinshan District Wei Chang Road 201505 Shanghai City No. 293 Building 2 room 6105 Patentee before: SHANGHAI TONGXUE INDUSTRIAL Co.,Ltd. |
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