CN202041344U - High pressure sensor for ultra performance liquid chromatograph - Google Patents
High pressure sensor for ultra performance liquid chromatograph Download PDFInfo
- Publication number
- CN202041344U CN202041344U CN2011201328706U CN201120132870U CN202041344U CN 202041344 U CN202041344 U CN 202041344U CN 2011201328706 U CN2011201328706 U CN 2011201328706U CN 201120132870 U CN201120132870 U CN 201120132870U CN 202041344 U CN202041344 U CN 202041344U
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- pressure sensor
- high pressure
- performance liquid
- base
- ultra performance
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Abstract
The utility model provides a high pressure sensor for an ultra performance liquid chromatograph, comprising a base. A cavity is arranged in the base, a pressure sensor is arranged on the base, and a sealing gasket is arranged between the pressure sensor and the cavity. A liquid input port and a liquid output port are arranged on the base. An upper cover is connected with the upper end of the pressure sensor, and a protecting ring is fixedly arranged at the upper end of the upper cover and is connected with the base. The high pressure sensor for the ultra performance liquid chromatograph is used for detecting the pressure of an ultra-high constant flow pump, can test pressure at a flow path, and has the advantages of high pressure tolerance and small dead volume. By adopting the high pressure sensor for the ultra performance liquid chromatograph, detection of maximum pressure of 100 MPa of an ultra-high pressure pump is finished, and the blank of the technique in China is filled.
Description
Technical field
The utility model relates to a kind of high pressure sensing device, specifically is a kind of high pressure sensor that is used for the Ultra Performance Liquid Chromatography instrument.
Background technology
Liquid chromatograph is used for the fluid sample component concentration is carried out analysis to measure, and high performance liquid chromatograph mainly is made of reservoir, mixer, high-pressure pump, injector, chromatographic column, detecting device and registering instrument.
High pressure constant flow pump is an important component part of liquid chromatograph, and it is depressed into certain high pressure mutually with liquid flow, and with the constant rate of artificial setting flow through sampling system and separating column, thereby the compartment analysis material.
In the stratographic analysis process, for preventing to take the pressure protect measure because of reasons such as stream obstruction make working pressure exceed the normal working pressure of chromatographic column and liquid chromatograph.Normally preestablish a upper pressure limit or lower limit, when working pressure surpassed or is lower than this set pressure limit value, to control module, liquid chromatograph stopped infusion pump work to pressure transducer automatically with information feedback, is not damaged with protection chromatographic column and instrument.
The test specification of similar pressure transducer that is used for high performance liquid chromatograph in the prior art is generally below 42MPa, and at present, the pressure transducer of overload pressure more than 42MPa be still blank out at home.The utility model has overcome the limit of the maximum overload pressure of above-mentioned prior art pressure transducer permission, and a kind of high pressure sensing device that is used for the Ultra Performance Liquid Chromatography instrument is provided, and can test stream pressure, has the little and proof pressure advantages of higher of dead volume.The high pressure sensor that is used for the Ultra Performance Liquid Chromatography instrument of the present utility model can detect the high pressure that superelevation constant flow pump 42MPa is above, reach 100MPa.
The utility model content
The utility model provides a kind of high pressure sensor that is used for the Ultra Performance Liquid Chromatography instrument, comprising:
Base is provided with cavity in the base; Base is provided with pressure transducer, is provided with sealing gasket between pressure transducer and the cavity; Base is provided with fluid input port, fluid outlet; Loam cake, loam cake is connected with the upper end of pressure transducer; Protection ring, protection ring are fixedly installed on the loam cake upper end, and are connected with base.
Wherein, loam cake is connected with base through screws; Be provided with pressure ring between pressure transducer and the loam cake; Pressure transducer is provided with connecting line; Protection ring is fixed on by fluid sealant and covers; Fluid input port, fluid outlet are communicated with seal chamber respectively.
The utility model is used for the high pressure sensing device of Ultra Performance Liquid Chromatography instrument, and sealing gasket is to be made by the PEEK material, and the PEEK material is a kind of high performance engineering plastics, and formal name used at school is a polyetheretherketone.Adopt PEEK to do that sealing gasket is main will to guarantee its sealing, in order further to improve the sealing of device, the utility model has also used the convex type ring structure.The utilization screw couples together loam cake and base, can play the effect of fixation pressure sensor.
When the normal liquid of liquid flowed, liquid entered in the seal chamber by the fluid input port, and the pressure of liquid can be measured by pressure sensor apparatus the pressure of sealing gasket effect.The high pressure sensor that the utility model is used for the Ultra Performance Liquid Chromatography instrument is a kind of sensing device that detects superelevation constant flow pump pressure, can be at the stream test pressure, and its advantage is the proof pressure height, dead volume is little.The utility model has been finished the detection of super-pressure pump maximum pressure 100MPa, has filled up the blank of domestic this technology.
Description of drawings
Fig. 1 is the overall schematic that the utility model is used for the high pressure sensor of Ultra Performance Liquid Chromatography instrument;
Fig. 2 is the structural representation that the utility model is used for the high pressure sensor of Ultra Performance Liquid Chromatography instrument.
Embodiment
Further elaborate the utility model below in conjunction with drawings and Examples.Following examples are not limitation of the present invention.Under the spirit and scope that do not deviate from inventive concept, variation and advantage that those skilled in the art can expect all are included in the utility model.
Fig. 1 is used for the overall schematic of the high pressure sensor of Ultra Performance Liquid Chromatography instrument for the utility model, and Fig. 2 is used for the structural representation of the high pressure sensor of Ultra Performance Liquid Chromatography instrument for the utility model.Wherein, 1 is base, and 2 is pressure transducer, and 3 is loam cake, and 4 is fluid sealant, and 5 is the fluid input port, and 6 is fluid outlet, and 7 is sealing gasket, and 8 is connecting line, and 9,12 is screw, and 10 is protection ring, and 11 is seal chamber, and 13 is pressure ring.
As shown in Figure 2, base 1 is provided with pressure transducer 2, forms cavity 11 by sealing gasket 7 between pressure transducer 2 and the base 1.Be welded with connecting line 8 on the pressure transducer 2.
Wherein, base 1 is made by stainless steel material; Pressure transducer 2 is made by the stainless steel elastic body; Loam cake 3 is made by stainless steel material; Fluid sealant 4 is made by silica gel; Sealing gasket 7 is made by the PEEK material; Protection ring 10 is made by aluminum alloy materials; Pressure ring 13 is made by stainless steel material.
Sealing gasket 7 in the utility model is to be made by the PEEK material, and the PEEK material is a kind of high performance engineering plastics, and formal name used at school is a polyetheretherketone.Adopt PEEK to do that sealing gasket is main will to guarantee its sealing, in order further to improve the sealing of device, the utility model has also used the convex type ring structure.Reduce the base 1 and the contact area between the sealing gasket 7 of protruding ring part, make the pressure increase of surface of contact, thereby reach between the surface of contact the more effect of high leakproofness.
Advantage of the present utility model comprises: external form is small and exquisite; With 316L stainless steel and PEEK material structure as a whole, corrosion resistance is strong; Because the suitable minimizing of protruding ring part surface of contact area brings the sealing ability strong between base 1 and the sealing gasket 7; The basic element of character of the present utility model all is to be made by stainless steel material, so high voltage bearing characteristics are arranged.
The high pressure sensor that the utility model is used for the Ultra Performance Liquid Chromatography instrument can be used in the pressure that detects the superelevation constant flow pump, can be at the stream test pressure, and its proof pressure height, dead volume is little.The utility model can be finished the detection of super-pressure pump maximum pressure 100MPa, has filled up the blank of domestic this technology.
Being preferred embodiment of the present invention only in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should belong to technology category of the present invention.
Claims (6)
1. a high pressure sensor that is used for the Ultra Performance Liquid Chromatography instrument is characterized in that, comprising:
Base (1) is provided with cavity (11) in the described base (1); Described base (1) is provided with pressure transducer (2); Be provided with sealing gasket (7) between described pressure transducer (2) and the described cavity (11); Described base (1) is provided with fluid input port (5), fluid outlet (6);
Loam cake (3), described loam cake (3) is connected with the upper end of described pressure transducer (2);
Protection ring (10), described protection ring (10) are fixedly installed on described loam cake (3) upper end, and are connected with described base (1).
2. be used for the high pressure sensor of Ultra Performance Liquid Chromatography instrument according to claim 1, it is characterized in that, described loam cake (3) is connected by screw (9,12) with described base (1).
3. be used for the high pressure sensor of Ultra Performance Liquid Chromatography instrument according to claim 1, it is characterized in that, be provided with pressure ring (13) between described pressure transducer (2) and the described loam cake (3).
4. be used for the high pressure sensor of Ultra Performance Liquid Chromatography instrument according to claim 1, it is characterized in that, described pressure transducer (2) is provided with connecting line (8).
5. be used for the high pressure sensor of Ultra Performance Liquid Chromatography instrument according to claim 1, it is characterized in that, described protection ring (10) is fixed on the loam cake (3) by fluid sealant (4).
6. be used for the high pressure sensor of Ultra Performance Liquid Chromatography instrument according to claim 1, it is characterized in that, described fluid input port (5), fluid outlet (6) are communicated with described seal chamber (11) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201328706U CN202041344U (en) | 2011-04-29 | 2011-04-29 | High pressure sensor for ultra performance liquid chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201328706U CN202041344U (en) | 2011-04-29 | 2011-04-29 | High pressure sensor for ultra performance liquid chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202041344U true CN202041344U (en) | 2011-11-16 |
Family
ID=44968782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201328706U Expired - Lifetime CN202041344U (en) | 2011-04-29 | 2011-04-29 | High pressure sensor for ultra performance liquid chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202041344U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931624A (en) * | 2015-07-16 | 2015-09-23 | 河北欧世盛科技有限公司 | Pressure sensor and liquid chromatograph |
| CN114459662A (en) * | 2022-02-08 | 2022-05-10 | 依利特(苏州)分析仪器有限公司 | Pressure measuring device of liquid chromatograph |
-
2011
- 2011-04-29 CN CN2011201328706U patent/CN202041344U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931624A (en) * | 2015-07-16 | 2015-09-23 | 河北欧世盛科技有限公司 | Pressure sensor and liquid chromatograph |
| CN114459662A (en) * | 2022-02-08 | 2022-05-10 | 依利特(苏州)分析仪器有限公司 | Pressure measuring device of liquid chromatograph |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111116 |