CN208596140U - It is a kind of for gas-chromatography transmission line without heat source temperature regulating device - Google Patents
It is a kind of for gas-chromatography transmission line without heat source temperature regulating device Download PDFInfo
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- CN208596140U CN208596140U CN201821272122.6U CN201821272122U CN208596140U CN 208596140 U CN208596140 U CN 208596140U CN 201821272122 U CN201821272122 U CN 201821272122U CN 208596140 U CN208596140 U CN 208596140U
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Abstract
The utility model discloses a kind of for gas-chromatography transmission line without heat source temperature regulating device, including transmission line ontology, temperature sensor, control circuit and fan, transmission line ontology one or both ends are connect with the region with heat source, temperature sensor is mounted on detection transmission line, the temperature of temperature sensor detection transmission line, and temperature signal is fed back into control circuit；In this product, transmission line itself does not install the heating elements such as heater strip, heating sheet, heat is drawn by the modes such as heat transfer or convection current or radiation by the region with heat source connected from its both ends, transmission line temperature is perceived with temperature sensor, feed back to control circuit, control circuit adjusts rotation speed of the fan according to transmission line Current Temperatures and target temperature, to achieve the purpose that control transmission line temperature.This programme have many advantages, such as it is simple and reliable for structure, be suitable for transmission line that length in a certain range changes, be stably controlled temperature lower or close to room temperature.
Description
Technical field
The utility model relates to a kind of for gas-chromatography transmission line without heat source temperature regulating device.
Background technique
Chromatograph is a kind of analytical and testing instrument being widely used, it using gas or liquid as mobile phase in pipeline
Middle flowing, carries gas/liquid sample or the sample gas after gasifying enters chromatographic chromatographic column/capillary column, utilizes object
The difference of the boiling point of matter, polarity and adsorption property realizes the separation of mixture, and each component after finally being separated is loaded into inspection
Device is surveyed to be detected.It, can be extensive in gas chromatograph due to using the needs of clack box, sampling device, multi-dimensional chromatograph modulator etc.
Outside using the channel connection burner hearth of heat preservation, clack box, hot-zone especially above burner hearth etc..The channel of this heat preservation, which is referred to as, transmits
Line.Because stability, the repeatability of the temperature of the entire carrier gas passage of gas chromatograph will have a direct impact on the most important ginseng of instrument
Number --- stability, the repeatability of retention time, so the requirement to transmission line is to be stably held in predetermined temperature.Existing transmission
Line technology some is the simple connection of one section of heat-insulated pipe, does not have temperature active control measures, it is clear that is unfavorable for instrument performance
Stablize.Some has wrapped up metal heating wire outside section of a pipe, encloses temperature sensor, the temperature measured according to temperature sensor
The heating power for spending feedback control metal heating wire, can satisfy the needs of stable temperature control in some scenes.The master of the method
Want deficiency to be: 1) metal heating wire package structure is complicated, need to ensure that heater strip is bonded pipeline；2) after the completion of wire package,
Length of transmission line is not easy to adjust；3) target temperature is lower or when close to room temperature, it is difficult to temperature control.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of for gas-chromatography transmission line without heat source temperature control
Device.
The utility model is achieved through the following technical solutions:
It is a kind of for gas-chromatography transmission line without heat source temperature regulating device, including transmission line ontology, temperature sensor, control
Circuit and fan, transmission line ontology one or both ends are connect with the region with heat source, and temperature sensor is mounted on detection transmission
On line, the temperature of temperature sensor detection transmission line, and temperature signal is fed back into control circuit, control circuit is used for basis
Current Temperatures and target temperature adjust rotation speed of the fan, and fan is used for transmission line ontology blow flow.
Preferably, the region with heat source is the hot-zone of gas chromatograph and/or the inner wall of hearth of gas phase chromatograph.
Preferably, heat exchanger is installed in the region with heat source connecting with its one or both ends on transmission line ontology.
Preferably, it one end and the cold-zone domain thermal insulation far from the region with heat source of transmission line ontology or does not contact.
Preferably, the fan is centrifugal fan or tube-axial fan.
Preferably, the heat exchanger is one group of heat exchange sheet.
Preferably, transmission line ontology is made by the good conductor of heat.
Preferably, the good conductor of the heat is copper.
The beneficial effects of the utility model are: transmission line itself does not install the heating units such as heater strip, heating sheet in this product
Part draws heat by the modes such as heat transfer or convection current or radiation by the region with heat source connected from its both ends, with temperature
It spends sensor and perceives transmission line temperature, feed back to control circuit, control circuit is according to transmission line Current Temperatures and target temperature tune
Rotation speed of the fan is saved, to achieve the purpose that control transmission line temperature.This programme have it is simple and reliable for structure, be suitable for a certain range
The transmission line of interior length variation is stably controlled the advantages that lower or temperature close to room temperature.
Firstly, this programme, which is used from gas-chromatography burner hearth and other hot-zones (such as hot-zone of full two-dimensional modulator), passes through heat
Conduction etc. takes the mode of heat, avoids the use of electric heating wire and its installation requirement of complexity, controls temperature using fan airstream
Simple installation.Then, it since fan airstream can cover a certain range, is suitable for length of transmission line and changes in a certain range.
In addition, transmission line of this programme using the cooling relatively-high temperature of air at room temperature, may be implemented to relatively low or close to ambient temperature
Stability contorting.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Attached drawing 1 is the structural schematic diagram of the embodiments of the present invention 1；
Attached drawing 2 is the structural schematic diagram of the embodiments of the present invention 2；
Attached drawing 3 is the structural schematic diagram of the embodiments of the present invention 3.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
In the description of the present invention, it should be understood that term " one end ", " other end ", " outside ", "upper", " interior
The orientation or positional relationship of the instructions such as side ", "horizontal", " coaxial ", " center ", " end ", " length ", " outer end " is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion institute
The device or element of finger must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this reality
With novel limitation.
In addition, in the description of the present invention, the meaning of " plurality " is at least two, such as two, three etc., unless
Separately there is clearly specific restriction.
In the present invention unless specifically defined or limited otherwise, term " setting ", " connection ", " passes through at " socket "
Wear ", the terms such as " grafting " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；
It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Embodiment 1
Fig. 1 shows schematically the structure diagram of the embodiments of the present invention 1.As shown in Figure 1, the no heat source control
Warm device includes transmission line ontology 21, heat exchanger 22, temperature sensor 23, control circuit 24, fan 25.Transmission line ontology 21
It is fixed on by modes such as screw thread or cutting ferrule or compressions on the inner wall of hot-zone 12 or gas-chromatography burner hearth 11.Transmission line ontology 21 is not
Containing heating elements such as heater strip, heating sheets.The temperature controlled region that transmission line ontology 21 can be connected from its both ends, i.e. gas phase color
Burner hearth 11 and hot-zone 12 are composed, draws heat by the modes such as heat transfer or convection current or radiation.One end of transmission line ontology 21, such as
This one end of gas-chromatography burner hearth 11, is equipped with heat exchanger 22, for improving heat exchange efficiency, sufficiently draws from gas-chromatography burner hearth 11
Heat is taken, the temperature upper limit that transmission line ontology 21 is likely to be breached is improved, the heat exchanger can be one group of heat exchange sheet.Transmission
Temperature sensor 23 is installed on line ontology 21, is fed back to for measuring the real time temperature of transmission line ontology 21, and by conducting wire
Control circuit 24.Control circuit 24 according to the temperature target currently set compared with actual measured value, according to certain control
System strategy, exports the voltage of different height, controls the revolving speed of fan 25.In general, actual measured value exceeds temperature target
Difference it is higher, output voltage is bigger, and 25 revolving speed of fan is faster, bigger to the refrigeration of transmission line ontology 21, be more obvious,
To promote transmission line ontology 21 to be reduced to target temperature as early as possible；Difference of the actual measured value beyond temperature target is lower, output
For voltage with regard to smaller, 25 revolving speed of fan is slower, smaller to the refrigeration of transmission line ontology 21, and transmission line ontology 21 is avoided to lose
Heat cooling is too many, and target temperature is not achieved.If actual measured value is also low compared to temperature target, control circuit 24 exports electricity
Pressure is zero, and fan does not work.Illustrate that target temperature has exceeded the temperature range that the device can control at this time.
To keep the stability of Temperature Distribution in 21 whole length of transmission line ontology, repeatability and as far as possible uniformly, generally
The good conductor production of the heat such as copper can be used that there is the transmission line ontology 21 of certain wall thickness, to ensure temperature in transmission line ontology 21
It is internal as uniform as possible.
Embodiment 2
Fig. 2 shows schematically the structure diagram of the embodiments of the present invention 2.The difference from embodiment 1 is that: it passes
Only one end is connected defeated line ontology 21 with burner hearth 11, keeps good heat transfer or thermal convection, the other end is due to being that temperature is lower
Cold-zone 13, transmission line ontology 21 do not contacted with cold-zone 13 perhaps or with cold-zone 13 connection with heat non-conductor material every
From to reduce heat transfer and convection current.In this embodiment, transmission line ontology 21 only draws heat from burner hearth 11.
Embodiment 3
Fig. 3 shows schematically the structure diagram of the embodiments of the present invention 3.The difference from embodiment 1 is that: it passes
The end of defeated line ontology 21, is fitted without heat exchanger 22.For example, which is suitable for following scene: transmission line sheet
The target temperature of body 21 is lower；Even if fan with full power operation, is also insufficient to allow transmission line ontology 21 to be reduced to target temperature；
11 inside of burner hearth is narrow, and no sufficient space installs heat exchanger 22.
Cooling method is described by taking centrifugal fan as an example in above-described embodiment figure.Axial-flow type wind also can be used in the present invention
Fan or even other various forms of fans or air-flow refrigerating plant.,
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, any change or replacement expected without creative work be should be covered within the scope of the utility model.
Therefore, the protection scope of the utility model should be determined by the scope of protection defined in the claims.
Claims (8)
1. it is a kind of for gas-chromatography transmission line without heat source temperature regulating device, it is characterised in that: including transmission line ontology, temperature pass
Sensor, control circuit and fan, transmission line ontology one or both ends are connect with the region with heat source, and temperature sensor is mounted on
It detects on transmission line, the temperature of temperature sensor detection transmission line, and temperature signal is fed back into control circuit, control circuit
For adjusting rotation speed of the fan according to Current Temperatures and target temperature, fan is used for transmission line ontology blow flow.
2. it is according to claim 1 for gas-chromatography transmission line without heat source temperature regulating device, it is characterised in that: there is heat
The region in source is the hot-zone of gas chromatograph and/or the inner wall of hearth of gas phase chromatograph.
3. it is according to claim 1 for gas-chromatography transmission line without heat source temperature regulating device, it is characterised in that: transmission line
Heat exchanger is installed in the region with heat source connecting with its one or both ends on ontology.
4. it is according to claim 1 for gas-chromatography transmission line without heat source temperature regulating device, it is characterised in that: transmission line
One end and the cold-zone domain thermal insulation far from the region with heat source of ontology do not contact.
5. it is according to claim 1 for gas-chromatography transmission line without heat source temperature regulating device, it is characterised in that: the wind
Fan is centrifugal fan or tube-axial fan.
6. it is according to claim 3 for gas-chromatography transmission line without heat source temperature regulating device, it is characterised in that: it is described to change
Hot device is one group of heat exchange sheet.
7. it is according to claim 1 for gas-chromatography transmission line without heat source temperature regulating device, it is characterised in that: transmission line
Ontology is made by the good conductor of heat.
8. it is according to claim 7 for gas-chromatography transmission line without heat source temperature regulating device, it is characterised in that: the heat
Good conductor be copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821272122.6U CN208596140U (en) | 2018-08-08 | 2018-08-08 | It is a kind of for gas-chromatography transmission line without heat source temperature regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821272122.6U CN208596140U (en) | 2018-08-08 | 2018-08-08 | It is a kind of for gas-chromatography transmission line without heat source temperature regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208596140U true CN208596140U (en) | 2019-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821272122.6U Active CN208596140U (en) | 2018-08-08 | 2018-08-08 | It is a kind of for gas-chromatography transmission line without heat source temperature regulating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220074898A1 (en) * | 2018-12-28 | 2022-03-10 | Bioneer Corporation | Heater integrated gas chromatography column device |
-
2018
- 2018-08-08 CN CN201821272122.6U patent/CN208596140U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220074898A1 (en) * | 2018-12-28 | 2022-03-10 | Bioneer Corporation | Heater integrated gas chromatography column device |
| US11879876B2 (en) * | 2018-12-28 | 2024-01-23 | Bioneer Corporation | Heater integrated gas chromatography column device |
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