CN2881628Y - Corrugated sheet type pulsing buffer - Google Patents
Corrugated sheet type pulsing buffer Download PDFInfo
- Publication number
- CN2881628Y CN2881628Y CN 200620012911 CN200620012911U CN2881628Y CN 2881628 Y CN2881628 Y CN 2881628Y CN 200620012911 CN200620012911 CN 200620012911 CN 200620012911 U CN200620012911 U CN 200620012911U CN 2881628 Y CN2881628 Y CN 2881628Y
- Authority
- CN
- China
- Prior art keywords
- cup
- ripple
- lid
- hole
- corrugated plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a corrugated sheet type pulsation damper. A cup is provided with a lid, the lid is compressed on the cup through a screw bolt, a corrugated sheet is equipped between the lid and the cup through the gasket ring at the cup mouth, the surface of the corrugated sheet is provided with convex and concave corrugations, the lid is provided with a carrier liquid outlet and a carrier liquid inlet leading to the corrugated sheet respectively, a central through hole coordinating with a pressure sensor is provided on the lid, the pressure sensor is installed in the central through hole through the through hole gasket ring and the bottom of the pressure sensor is in butt junction with the corrugated sheet. The utility model utilizes the corrugation deformation of the corrugated sheet to diffuse and eliminate the pressure fluctuation of the high pressure pump outlet liquid and then detect the carrier liquid pressure through the pressure sensor, so as to eliminate the baseline pulse and improve the stability and accuracy of the instrument. The utility model has the advantages of small pulse, small dead volume, cheap price and convenient installation.
Description
Technical field
The utility model relates to a kind of ripple chip pulsation damper.Described ripple chip pulsation damper is applicable to high performance liquid chromatograph.
Background technology
At present, in liquid-phase chromatographic analysis work, because the pressure fluctuation that the pressure differential of high-pressure pump plunger imbibition moment produces can cause the baseline wander (fluctuation) of chromatogram, so that the reduction detection sensitivity maybe can not be carried out normal sample separation and detection.Therefore, the high performance liquid chromatograph of each company's production all must link a ripple damper between pump discharge and chromatographic column at present.Its purpose will eliminate pressure fluctuation in the high-pressure pump outlet exactly.
At present the high-pressure pump ripple damper produced of each company has following several: resonant cavity type, adjustable spring type, online metal is ring-like and T type metal is ring-like etc.They respectively have its shortcoming as follows: 1. resonant cavity type and adjustable spring damper are to store a part of solvent in the side of stream, play buffer action.The solvent of buffer portion was not easy to replace towards Xian when its shortcoming was this class formation replacing solvent.2. online becket damper and T type becket damper adopt flat ring stainless steel pipe as buffer portion, and during high pressure, the pipe of this kind pressing can attempt to reach round xsect, return to original shape and release energy in the imbibition process.Its shortcoming is that the damping of fine inner diameter pipe is relatively poor.3. compressed fluid damper, moving phase be from thin deformable stainless steel substrates one effluent mistake, the bigger normal hexane of opposite side perfusion compressibility coefficient, and liquid such as methyl alcohol when pressure increases, can pass through the compressed liquid storage power.The infusion pump of offshore companies such as Gilsou adopts this kind damper.But it is also satisfied inadequately that this damper is eliminated pulsation effect.
Summary of the invention
The purpose of this utility model provides that a kind of pulsation is little, and dead volume is little, and is cheap, ripple chip pulsation damper easy for installation.
For achieving the above object, the utility model is taked following design proposal:
A kind of ripple chip pulsation damper, be on cup, to be furnished with lid, and lid is pressed on the cup by bolt, be provided with corrugated plate by the rim of a cup O-ring seal between lid and the cup mouth, the face of this corrugated plate is provided with the ripple of convex-concave, cover and be provided with carrier fluid outlet, carrier fluid inlet, communicate with the lower bottom part of lid by carrier fluid exit passageway, carrier fluid access road respectively, and lead on the corrugated plate, cover and be provided with the central through hole that matches with pressure transducer, pressure transducer is installed in the central through hole by the through hole O-ring seal, and the bottom and the corrugated plate of pressure transducer connect.
Like this, said structure is formed ripple chip pulsation damper by the top secure seal one deformable corrugated plate on cup.During use, in cup, fill compressibility liquid, the high-pressure pump outlet is joined with the carrier fluid inlet, utilize the ripple distortion of corrugated plate that the pressure surge diffusion that high-pressure pump exports liquid is eliminated, detect carrier fluid pressure by pressure transducer again, eliminate the baseline pulsation, improved instrument stabilizer degree and sensitivity.
In ripple chip pulsation damper of the present utility model, the ripple of the convex-concave of described corrugated plate is located on the one side relative with cup.
In ripple chip pulsation damper of the present utility model, described carrier fluid outlet, carrier fluid inlet are located at respectively on the relative two side of lid.
In ripple chip pulsation damper of the present utility model, in the described cup anhydrous alcohol is housed.
In ripple chip pulsation damper of the present utility model, the middle part of a side of described cup is provided with spout hole, and this spout hole is furnished with spout hole O-ring seal and the sealing of screw plug-hole.
In ripple chip pulsation damper of the present utility model, the ripple of the convex-concave of described corrugated plate is for to be formed centrally in the corrugated plate with circle shape or spiral fashion, and the ripple number of turns is 6 circles, the wide 2mm of every circle, 1.5mm at interval.
In ripple chip pulsation damper of the present utility model, described corrugated plate is that alloy material or high-intensity material are made, and thickness is 0.1mm.
In ripple chip pulsation damper of the present utility model, described rim of a cup O-ring seal, through hole O-ring seal, spout hole O-ring seal are the teflon material, and thickness is 1.5mm～0.3mm.
In ripple chip pulsation damper of the present utility model, the pressure limit of described pressure transducer is 0-50MPa.
The utility model has the advantages that: ripple chip pulsation damper described in the utility model has overcome ripple damper commonly used respectively its shortcoming, be to utilize the ripple distortion of corrugated plate that the pressure surge diffusion that high-pressure pump exports liquid is eliminated, detect carrier fluid pressure by pressure transducer again, eliminate the baseline pulsation, improved instrument stabilizer degree and sensitivity.Characteristics such as it is little to have pulsation, and dead volume is little, and is cheap, easy for installation.
Description of drawings
Fig. 1 is the structural representation of pulsation damper of the present utility model.Wherein sign flag is: 1, cup; 2, pressure transducer; 3, through hole O-ring seal; 4, lid; 5, spout hole O-ring seal; 6, screw; 7, alcohol; 8, carrier fluid outlet; 9, carrier fluid inlet.
Fig. 2 is the part enlarged drawing of Fig. 1.Wherein sign flag is: 11, corrugated plate; 12, rim of a cup O-ring seal.
Fig. 3 is the vertical view of Fig. 1.Wherein sign flag is: 10, hexagon socket head cap screw.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the utility model is to be furnished with to cover 4 on cup 1, and covers 4 and be pressed on the cup 1 by hexagon socket head cap screw 10.Be provided with corrugated plate 11 by rim of a cup O-ring seal 12 between lid 4 and 1 mouthful of the cup, the face of this corrugated plate 11 is provided with the ripple of convex-concave, and the ripple of the convex-concave of corrugated plate 11 is located on the one side relative with cup 1.Be respectively equipped with carrier fluid outlet 8, carrier fluid inlet 9 on the relative two side of lid 4, and communicate with the lower bottom part of lid 4, and lead on the corrugated plate 11 by carrier fluid exit passageway, carrier fluid access road respectively.Lid 4 is provided with the central through hole that matches with pressure transducer 2, and pressure transducer 2 is installed in the central through hole by through hole O-ring seal 3, and the bottom of pressure transducer 2 and corrugated plate 11 connect.Anhydrous alcohol 7 is housed in the cup 1.The middle part of one side of cup 1 is provided with spout hole, and this spout hole is furnished with spout hole O-ring seal 5 and the sealing of screw 6 plug-holes.During use, the high-pressure pump outlet is joined with carrier fluid inlet 9.
As Fig. 1, Fig. 2, shown in Figure 3, will be full of anhydrous alcohol 7 in the cup 1, (adopt teflon, thickness is 0.3mm with rim of a cup O-ring seal 12.The energy bearing certain pressure, can play sealing function) on mouth that is placed on cup 1, (material is a Precise Alloy with corrugated plate 11 then, thickness is 0.1mm, the ripple number of turns be 6 the circle, every circle width is 1mm, is spaced apart 1.5mm) be placed on above (ripply one facing to liquid level), put a rim of a cup O-ring seal 12 on it again, press at last and cover 4.With six interior angle screws 10 will cover 4 and cup 1 tighten, guaranteeing can be from corrugated plate 11 leakage.This moment, alcohol 7 meetings be overflowed from the right wall spout hole of cup 1, put spout hole O-ring seal 5 (material is a teflon, and thickness is 1.5mm) with screw 6 then aperture is blocked up, and guaranteed not leak.At last through hole O-ring seal 3 (material is a teflon, and thickness is 2.5mm) is enclosed within on the pressure transducer 2 (pressure limit 0-50MPa), is screwed into together and covers in 4.During use, carrier fluid inlet 9 is connected with high-pressure pump, during work, under high pressure pump drive, carrier fluid 9 enters from entering the mouth, through corrugated plate 11 distortion, the pressure surge diffusion of the liquid of high-pressure pump outlet 9 is eliminated, detected the carrier fluid pressure by pressure transducer 2 again, last carrier fluid steadily flows out from carrier fluid outlet 8 again.Its principle of work is, utilizes corrugated plate 11 distortion of corrugated plate that the pressure surge diffusion that high-pressure pump exports liquid is eliminated, and detects the carrier fluid pressure by pressure transducer 2 again, eliminated the baseline pulsation, improved instrument stabilizer degree and sensitivity.
Claims (9)
1, a kind of ripple chip pulsation damper, it is characterized in that: be on cup, to be furnished with lid, and lid is pressed on the cup by bolt, be provided with corrugated plate by the rim of a cup O-ring seal between lid and the cup mouth, the face of this corrugated plate is provided with the ripple of convex-concave, cover and be provided with the carrier fluid outlet, the carrier fluid inlet, respectively by the carrier fluid exit passageway, the carrier fluid access road communicates with the lower bottom part of lid, and lead on the corrugated plate, cover and be provided with the central through hole that matches with pressure transducer, pressure transducer is installed in the central through hole by the through hole O-ring seal, and the bottom and the corrugated plate of pressure transducer connect.
2, ripple chip pulsation damper according to claim 1, it is characterized in that: the ripple of the convex-concave of described corrugated plate is located on the one side relative with cup.
3, ripple chip pulsation damper according to claim 1 and 2 is characterized in that: described carrier fluid outlet, carrier fluid inlet are located at respectively on the relative two side of lid.
4, ripple chip pulsation damper according to claim 3 is characterized in that: in the described cup anhydrous alcohol is housed.
5, ripple chip pulsation damper according to claim 4, it is characterized in that: the middle part of a side of described cup is provided with spout hole, and this spout hole is furnished with spout hole O-ring seal and the sealing of screw plug-hole.
6, ripple chip pulsation damper according to claim 5 is characterized in that: the ripple of the convex-concave of described corrugated plate is for to be formed centrally in the corrugated plate with circle shape or spiral fashion, and the ripple number of turns is 6 circles, the wide 2mm of every circle, 1.5mm at interval.
7, ripple chip pulsation damper according to claim 6 is characterized in that: described corrugated plate is that alloy material or high-intensity material are made, and thickness is 0.1mm.
8, ripple chip pulsation damper according to claim 7, it is characterized in that: described rim of a cup O-ring seal, through hole O-ring seal, spout hole O-ring seal are the teflon material, and thickness is 1.5mm～0.3mm.
9, ripple chip pulsation damper according to claim 8, it is characterized in that: the pressure limit of described pressure transducer is 0-50MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620012911 CN2881628Y (en) | 2006-04-03 | 2006-04-03 | Corrugated sheet type pulsing buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620012911 CN2881628Y (en) | 2006-04-03 | 2006-04-03 | Corrugated sheet type pulsing buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881628Y true CN2881628Y (en) | 2007-03-21 |
Family
ID=37881472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620012911 Expired - Fee Related CN2881628Y (en) | 2006-04-03 | 2006-04-03 | Corrugated sheet type pulsing buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881628Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105408742A (en) * | 2013-07-26 | 2016-03-16 | 安捷伦科技有限公司 | Pressure determination for hplc applications |
| CN105526823A (en) * | 2015-12-25 | 2016-04-27 | 无锡方盛换热器股份有限公司 | Heat exchanger capable of solving pulse influence |
| CN110425102A (en) * | 2019-08-06 | 2019-11-08 | 大连依利特分析仪器有限公司 | A kind of adjustable infusion pump surging damper |
-
2006
- 2006-04-03 CN CN 200620012911 patent/CN2881628Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105408742A (en) * | 2013-07-26 | 2016-03-16 | 安捷伦科技有限公司 | Pressure determination for hplc applications |
| US9841337B2 (en) | 2013-07-26 | 2017-12-12 | Agilent Technologies, Inc. | Pressure determination for HPLC applications |
| CN105408742B (en) * | 2013-07-26 | 2018-08-24 | 安捷伦科技有限公司 | Piezometry for HPLC application |
| CN105526823A (en) * | 2015-12-25 | 2016-04-27 | 无锡方盛换热器股份有限公司 | Heat exchanger capable of solving pulse influence |
| CN110425102A (en) * | 2019-08-06 | 2019-11-08 | 大连依利特分析仪器有限公司 | A kind of adjustable infusion pump surging damper |
| CN110425102B (en) * | 2019-08-06 | 2020-12-22 | 大连依利特分析仪器有限公司 | Adjustable infusion pump pulsation damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 Termination date: 20130403 |