CN206892689U - A kind of temperature control system of sample cell - Google Patents
A kind of temperature control system of sample cell Download PDFInfo
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- CN206892689U CN206892689U CN201720823362.XU CN201720823362U CN206892689U CN 206892689 U CN206892689 U CN 206892689U CN 201720823362 U CN201720823362 U CN 201720823362U CN 206892689 U CN206892689 U CN 206892689U
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- sample cell
- temperature
- sample
- control system
- temperature sensor
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Abstract
The utility model belongs to gas infrared detection technology field, more particularly to a kind of temperature control system of sample cell, including the heater for heating sample pool gas, and for detecting the temperature sensor of gas temperature in sample cell, the heater and temperature sensor electrically connect with temperature controller, the temperature information control heater work that temperature controller gathers according to temperature sensor, the temperature of sample pool gas is set to maintain in preset temperature range, the heater includes multiple heating fins for overhanging and setting from sample cell inwall to sample cell inside.Sample cell is internally heated using fin structure, heat conduction efficiency is on the one hand improved, on the other hand reduces thermal loss；Secondly temperature sensor is arranged on the mirror support inside sample cell by the utility model, is more nearly the center of sample cell, therefore testing result is closer to the actual temperature of sample pool gas；The control accuracy of temperature control system is improved on the whole.
Description
Technical field
The utility model belongs to gas infrared detection technology field, and in particular to a kind of temperature control system of sample cell.
Background technology
In the prior art, Concentration Testing is carried out to gas frequently with spectrometer, its principle is：It is tested when infrared beam passes through
During gas, gas can absorb infrared signal.Known by Lambert-Beer laws, gas molecule absorbance be proportional to absorb light path,
Gas Molecular Density and gas molecular absorption coefficient.And different gas molecules have different gas molecules sorb features.Therefore,
By carrying out spectrum analysis to the absorbance spectrum after gas absorbs Gas Molecular Density can be absorbed come quantitative inversion.Gas
The infrared detection of concentration typically uses sampling Detection mode, and under test gas is pumped in sample cell by the detection mode, makes gas
Infrared light is absorbed in sample cell.However, when being sampled detection to some gases, in order that gas has well
Infrared absorption characteristic, it is necessary to gas temperature is maintained in a preset range, it is main using outside sample cell in the prior art
The mode of portion's cladding heating mantle heats to the gas in sample cell, and using the TEMP being arranged on sample cell inwall
Device come monitors gas reciprocal of duty cycle in real time, then by temperature controller by the temperature control in sample cell within a preset range.It is this
The defects of temperature control system, is：Heater is coated on sample cell outer wall, and one side thermal conduction rate is slower, influences temperature control sound
Answer speed, the partial heat of another aspect heater causes energy waste to scattering and disappearing outside sample cell；In addition, prior art
Middle temperature sensor is arranged on sample cell inwall, and the temperature of sample cell inwall is obviously higher than the reality of sample pool gas
Temperature, therefore detection data do not have reliability, influence the control accuracy of temperature control system.
Utility model content
The purpose of this utility model is to provide a kind of sample of temperature control precision when can improve gas infrared detection
The temperature control system in pond.
To achieve the above object, the utility model provides following technical scheme：A kind of temperature control system of sample cell, including
It is described for heating the heater of sample pool gas, and for detecting the temperature sensor of gas temperature in sample cell
Heater and temperature sensor electrically connect with temperature controller, and the temperature that temperature controller gathers according to temperature sensor is believed
Breath control heater work, makes the temperature of sample pool gas maintain in preset temperature range, the heater includes
Multiple heating fins set that overhang from sample cell inwall to sample cell inside.
A plurality of gap is along the circumferential direction uniformly offered on the cylindrical body of sample cell, each gap is along parallel to sample cell axle
The direction arrangement of line, each heating fin are interspersed in each gap correspondingly.
The outer ring surface at the cylindrical body both ends is provided with annular groove, the both ends in each gap respectively with two annular grooves
Connection, is provided with ring bus-bars in the annular groove, and the both ends for heating fin are provided with lug, and the lug is along the gap
Protrude out in annular groove, and electrically connected with ring bus-bars, the ring bus-bars are electrically connected by binding post and temperature controller
Connect.
The lug end is set relative to heating fin 90-degree bent, and the bending part and ring bus-bars forming face
Contact.
The end face of the cylindrical body is provided with screwed hole, is axially seen along sample cell, each screwed hole and lug kink institute
Correspond and set in region, and each screwed hole is through in the annular groove, end cap is connected by bolt with cylindrical body, spiral shell
Bolt is through the screwed hole and is pushed against on ring bus-bars.
Heat-insulation layer made of heat-barrier material is coated with the cylindrical body outer ring surface of sample cell.
The temperature sensor is arranged on the mirror support inside sample cell, and the signal transmssion line of temperature sensor leads to
Cross the cabling channel set on mirror support to guide to sample cell end cap, and through end covers the threading hole opened up and leads to sample
Outside pond.
It is of the present utility model to have technical effect that：Sample cell is internally heated using fin structure, on the one hand carried
High heat conduction efficiency, on the other hand reduces thermal loss；Secondly, temperature sensor is arranged on sample cell by the utility model
On internal mirror support, the center of sample cell is more nearly, therefore testing result is closer to the reality of sample pool gas
Border temperature；The control accuracy of temperature control system is improved on the whole.
Brief description of the drawings
Fig. 1 is stereogram of the present utility model；
Fig. 2 is explosive view of the present utility model；
Fig. 3 is longitudinal sectional view of the present utility model；
Fig. 4 is transverse sectional view of the present utility model；
Fig. 5 is temperature sensor mounting structure schematic diagram of the present utility model.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
As Figure 1-5, a kind of temperature control system of sample cell, including for heating the heater of sample pool gas,
And for detecting the temperature sensor 22 of gas temperature in sample cell, the heater and temperature sensor 22 are and temperature
Controller 20 electrically connects, and the temperature information control heater that temperature controller 20 gathers according to temperature sensor 22 works, and makes
The temperature of sample pool gas is maintained in preset temperature range, and the heater includes multiple from sample cell inwall to sample
Overhang the heating fin 21 set inside pond.Sample cell is internally heated using fin structure, on the one hand improves heat
Conduction efficiency, on the other hand reduce thermal loss.
Preferably, as shown in Fig. 2 along the circumferential direction uniformly offering a plurality of gap 101 on the cylindrical body 10 of sample cell,
Each gap 101 is interspersed in each gap correspondingly along the direction arrangement parallel to sample cell axis, each heating fin 21
In 101.The outer ring surface at the both ends of cylindrical body 10 is provided with annular groove 102, the both ends in each gap 101 respectively with two
Annular groove 102 is connected, and ring bus-bars 23 are provided with the annular groove 102, and the both ends of the heating fin 21 are provided with lug
211, the lug 211 is protruded out in annular groove 102 along the gap 101, and is electrically connected with ring bus-bars 23, the annular
Bus-bar 23 is electrically connected by binding post with temperature controller 20.The end of lug 211 is relative to the heating 90-degree bent of fin 21
Set, and the bending part 212 contacts with the forming face of ring bus-bars 23, to prevent that electrical contact is bad.
Preferably, the end face of the cylindrical body 10 is provided with screwed hole, is axially seen along sample cell, each screwed hole and lug
211 kink regions, which correspond, to be set, and each screwed hole is through in the annular groove 102, end cap by bolt with
Cylindrical body 10 connects, and bolt is through the screwed hole and is pushed against on ring bus-bars 23.
Further, heat-insulation layer 11 made of heat-barrier material are coated with the outer ring surface of cylindrical body 10 of sample cell.It is described
Temperature sensor 22 is arranged on the mirror support 13 inside sample cell, and the signal transmssion line of temperature sensor 22 passes through reflection
The cabling channel set on mirror support 13 is guided to sample cell end cap 12, and passes through the threading hole 121 opened up on end cap 12 to lead to
Outside sample cell.Temperature sensor 22 is arranged on the mirror support 13 inside sample cell by the utility model, is more nearly
The center of sample cell, therefore testing result is closer to the actual temperature of sample pool gas；Temperature control system is improved on the whole
Control accuracy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. a kind of temperature control system of sample cell, including for heating the heater of sample pool gas, and for detecting sample
The temperature sensor (22) of product pool gas temperature, the heater and temperature sensor (22) with temperature controller (20)
Electrical connection, the temperature information control heater that temperature controller (20) gathers according to temperature sensor (22) work, and make sample
The temperature of pool gas is maintained in preset temperature range, it is characterised in that：The heater includes multiple from sample cell
The heating fin (21) that wall is set to the overhanging of sample cell inside.
2. the temperature control system of sample cell according to claim 1, it is characterised in that：Edge on the cylindrical body (10) of sample cell
Circumferencial direction uniformly offers a plurality of gap (101), and each gap (101) is arranged along the direction parallel to sample cell axis, described
Each heating fin (21) is interspersed in each gap (101) correspondingly.
3. the temperature control system of sample cell according to claim 2, it is characterised in that：Outside cylindrical body (10) both ends
Anchor ring is provided with annular groove (102), and the both ends of each gap (101) connect with two annular grooves (102) respectively, the annular
Ring bus-bars (23) are provided with groove (102), the both ends of the heating fin (21) are provided with lug (211), the lug (211)
Protrude out in annular groove (102), and electrically connected with ring bus-bars (23), the ring bus-bars along the gap (101)
(23) electrically connected by binding post with temperature controller (20).
4. the temperature control system of sample cell according to claim 3, it is characterised in that：Lug (211) end relative to
Heat fin (21) 90-degree bent to set, and the bending part (212) contacts with ring bus-bars (23) forming face.
5. the temperature control system of sample cell according to claim 4, it is characterised in that：On the end face of the cylindrical body (10)
Provided with screwed hole, axially to be seen along sample cell, each screwed hole is corresponded with lug (211) kink region and set, and respectively
Screwed hole is through in the annular groove (102), and end cap (12) is connected by bolt with cylindrical body (10), and bolt is described in
Screwed hole is simultaneously pushed against on ring bus-bars (23).
6. the temperature control system of sample cell according to claim 1, it is characterised in that：Cylindrical body (10) outer shroud of sample cell
Heat-insulation layer made of heat-barrier material (11) is coated with face.
7. the temperature control system of sample cell according to claim 1, it is characterised in that：The temperature sensor (22) is arranged on
On mirror support (13) inside sample cell, the signal transmssion line of temperature sensor (22) on mirror support (13) by setting
The cabling channel put is guided to sample cell end cap (12) place, and passes through the threading hole (121) opened up on end cap (12) to lead to sample cell
It is outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720823362.XU CN206892689U (en) | 2017-07-07 | 2017-07-07 | A kind of temperature control system of sample cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720823362.XU CN206892689U (en) | 2017-07-07 | 2017-07-07 | A kind of temperature control system of sample cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206892689U true CN206892689U (en) | 2018-01-16 |
Family
ID=61296398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720823362.XU Active CN206892689U (en) | 2017-07-07 | 2017-07-07 | A kind of temperature control system of sample cell |
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| Country | Link |
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| CN (1) | CN206892689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008838A (en) * | 2021-03-17 | 2021-06-22 | 华北电力大学 | Optical cavity, heating cavity, measuring device and liquid medium transmission spectrum measuring system |
-
2017
- 2017-07-07 CN CN201720823362.XU patent/CN206892689U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008838A (en) * | 2021-03-17 | 2021-06-22 | 华北电力大学 | Optical cavity, heating cavity, measuring device and liquid medium transmission spectrum measuring system |
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