CN209341696U - A kind of electrical heat tracing device - Google Patents
A kind of electrical heat tracing device Download PDFInfo
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- CN209341696U CN209341696U CN201821578849.7U CN201821578849U CN209341696U CN 209341696 U CN209341696 U CN 209341696U CN 201821578849 U CN201821578849 U CN 201821578849U CN 209341696 U CN209341696 U CN 209341696U
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- air inlet
- electrical
- temperature sensor
- return air
- tracing device
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Abstract
It include heat preservation oven and circulating fan the utility model discloses a kind of electrical heat tracing device, middle part in heat preservation oven is provided with air inlet, the top of air inlet is provided with return air inlet, the lower part of air inlet is provided with lower return air inlet, upper return air inlet is respectively communicated with an electrical heated pipings and a dehumidifying pipelines, lower return air inlet is connected to electrical heated pipings, the air inlet of circulating fan is connected to electrical heated pipings by return air Outer Tube, and the gas outlet of circulating fan is connected to air inlet by outer air inlet pipe road.The utility model has the advantages that: temperature control is high-efficient, can control air velocity, and temperature and humid control are accurate, and control operation is convenient, and environmental pollution is small.
Description
Technical field
The utility model belongs to electrical heat tracing technical field, and in particular to a kind of electrical heat tracing device.
Background technique
Existing electrical heat tracing equipment generally uses the technical solution of oil cauldron stove heating, and oil cauldron stove heating is fired by coal
Heating conduction oil is burnt, using pipeline into external air channel, by pipe surface heat dissipation come the air in heating pipe,
In, recycling temperature in air piping is to control oil circuit on-off by control heat conducting oil pipe electromagnetic valve switch.But oil cauldron stove heating
There are the serious time delays of temperature for device, and heating and cooling speed are all slow, therefore unsuitable small test machine equipment,
In addition oil cauldron stove heating environmental pollution is than more serious, unsuitable environmental requirement.
Summary of the invention
The purpose of this utility model is to provide a kind of electrical heat tracing device according in place of above-mentioned the deficiencies in the prior art,
Air in incubator is realized quickly heating by heating pipe by setting circulating fan by the attemperator, and can be just
The temperature in incubator is controlled promptly.
The utility model aim realization is completed by following technical scheme:
A kind of electrical heat tracing device, including heat preservation oven and circulating fan, the middle part in the heat preservation oven are provided with
Air inlet, the top of the air inlet is provided with the upper return air inlet, the lower part of the air inlet is provided with lower return air inlet, described
Upper return air inlet is respectively communicated with an electrical heated pipings and a dehumidifying pipelines, and the lower return air inlet is connected to the electrical heated pipings, described
The air inlet of circulating fan is connected to the electrical heated pipings by return air Outer Tube, and the gas outlet of the circulating fan passes through air inlet
Outer Tube is connected to the air inlet
The air inlet includes multiple deflectors, and the side of the deflector connects the outer air inlet pipe road, and the other side connects
Connect rotatable air port tuyere.
It is provided with the first temperature sensor in the upper return air inlet, second temperature sensing is provided in the lower return air inlet
Device is provided with third temperature sensor in the middle part of the air inlet.
First temperature sensor, the second temperature sensor, third temperature sensor, the electrical heated pipings are equal
Connect a PLC controller.
The circulating fan connects a frequency converter, and the PLC controller connects the frequency converter.
Further include the temperature setting device being set to outside heat preservation oven, control heating function is provided in the electrical heated pipings
The solid-state relay of rate, the temperature setting device and the solid-state relay with the PLC controller communication connection.
First temperature sensor, the second temperature sensor, third temperature sensor are all made of thermometric platinum resistance.
The heating source of the electrical heated pipings is heating wire.
The inner wall of the heat preservation oven is provided with heat-preservation cotton.
The utility model has the advantages that: (1) temperature control high-efficient, can control air velocity；(2) temperature and humid control are quasi-
Really；(3) control operation is convenient, and environmental pollution is small.
Detailed description of the invention
Fig. 1 is the main view of electrical heat tracing device in the utility model embodiment；
Fig. 2 is the schematic diagram of the section structure of electrical heat tracing device in the utility model embodiment；
Fig. 3 is the connection control schematic diagram of PLC controller in the utility model embodiment.
Specific embodiment
The feature of the utility model and other correlated characteristics are made further specifically by embodiment below in conjunction with attached drawing
It is bright, in order to the understanding of technical staff of the same trade:
Such as Fig. 1-3, respectively label is respectively as follows: circulating fan 1, air inlet 2, upper return air inlet 3, lower return air inlet 4, electric heating in figure
Pipeline 5, dehumidifying pipelines 6, return air Outer Tube 7, outer air inlet pipe road 8, deflector 9, air port tuyere 10, the first temperature sensor 11,
Second temperature sensor 12, third temperature sensor 13, PLC controller 14, frequency converter 15, temperature setting device 16, solid-state after
Electric appliance 17, heat-preservation cotton 18.
Embodiment: as shown in Figs. 1-2, the present embodiment is specifically related to a kind of electrical heat tracing device, by the way that circulated air is arranged
Air in incubator is realized quickly heating by heating pipe by machine 1, and can easily control the temperature in incubator.
Suitable for small-sized heat preservation oven, above-mentioned electrical heat tracing device multiple can be combined above-mentioned electrical heat tracing device.
As shown in Figs. 1-2, the electrical heat tracing device in the present embodiment includes the heat preservation oven for carrying out heat preservation and dryness,
For controlling the multiple pipelines and a circulating fan 1 of air flowing, the electrical heated pipings 5 heated in the duct are connected.
Wherein, the middle part in heat preservation oven is provided with air inlet 2, and the top of air inlet 2 is provided with the lower part of return air inlet 3, air inlet 2
It is provided with lower return air inlet 4, upper return air inlet 3 is respectively communicated with an electrical heated pipings 5 and a dehumidifying pipelines 6, and lower return air inlet 4 is connected to electricity and adds
The air inlet of heat pipeline 5, circulating fan 1 is connected to electrical heated pipings 5 by return air Outer Tube 7, and the gas outlet of circulating fan 1 passes through
Outer air inlet pipe road 8 is connected to air inlet 2.
In the present embodiment, above-mentioned air inlet 2 is used to heated air being passed into heat preservation oven, so that protecting
Temperature in warm baking oven reaches preset value, upper return air inlet 3 and lower return air inlet 4 for exporting the air in heat preservation oven to electricity
Heating pipe 5, electrical heated pipings 5 are entering the air heated in circulating fan 1 by return air Outer Tube 7, circulating fan 1
The output of air inlet 2 is finally introduced heated air into, to heat the circulation of air.The air flow direction of upper return air inlet 3 is divided into two parts,
A part is electrically heated the heating of pipeline 5, and the high air of humidity is exported to the external world by dehumidifying pipelines 6 by another part.In baking oven
It will form water vapour after interior heating product, it is therefore desirable to dehumidifying pipelines 6 are set and be discharged to the outside water vapour.
As shown in Figure 1-3, in the present embodiment, it is provided with the first temperature sensor 11 in upper return air inlet 3, in lower return air inlet 4
It is provided with second temperature sensor 12, the middle part of air inlet 2 is provided with third temperature sensor 13.First temperature sensor 11,
Second temperature sensor 12, third temperature sensor 13, electrical heated pipings 5 are all connected with a PLC controller 14.Heat preservation is set to dry
Temperature setting device 16 outside case is provided with the solid-state relay 17 of control heating power, temperature setting dress in electrical heated pipings 5
Set 16 and solid-state relay 17 with 14 communication connection of PLC controller.First temperature sensor 11, second temperature sensor 12,
Third temperature sensor 13 is all made of thermometric platinum resistance.The heating source of electrical heated pipings 5 is heating wire.
As shown in Figure 1-3, in the present embodiment, third temperature sensor 13 measures heat preservation oven intermediate point and air outlet
Temperature, second temperature sensor 12 and third temperature sensor 13 measure the temperature of upper return air inlet 3 and lower return air inlet 4, above-mentioned temperature
Degree signal is sent in PLC controller 14, the set temperature that PLC controller 14 input according to temperature setting device 16 with and
Above-mentioned temperature signal, which is compared, calculates to obtain the heating power and switch state of electrical heated pipings 5, then by solid-state after
Electric appliance 17 controls electrical heated pipings 5, and the above process may be implemented quickly to be heated or cooled, while also guarantee heat preservation oven
Interior temperature is constant in set temperature.Above-mentioned contrast conting is calculated using the PID in PLC controller 14 and is executed.
As shown in Figure 1-3, circulating fan 1 connects a frequency converter 15 in the present embodiment, PLC controller 14 connects frequency converter
15.PLC controller 14 can also pass through the revolving speed of 15 control loop blower 1 of frequency converter.Above-mentioned temperature setting device 16 uses
The structure of touch screen, touch screen are the visual signals input and display device that can be used as PLC controller 14.Further, it touches
Touching can be set the temperature of heat preservation, the air velocity in heat preservation oven on screen, can be received based on PLC controller 14 on touch screen
The control signal of semaphore output show that air velocity, temperature, upper temp, temperature of lower in current heat preservation oven etc. are several
According to.Electrical heated pipings 5 pre-actuate circulating fan 1 before heating under the control of PLC controller 14, avoid long-time heating that from making
Temperature is excessively high to burn heating wire.
As shown in Figs. 1-2, in the present embodiment, air inlet 2 includes multiple deflectors 9, and the side connection air inlet of deflector 9 is outer
Pipeline 8, the other side connect rotatable air port tuyere 10.Air port tuyere 10 can control the spray angle of air by rotating.Into
Hot-air is uniformly discharged in process oven by air port tuyere 10 to production at air inlet 2 through deflector 9 by the air in air port 2
Product heating.In order to guarantee that upper, middle and lower temperature uniformly must just adjust the angle of air port tuyere 10 in baking oven.
As shown in Figure 1, the inner wall of heat preservation oven is provided with heat-preservation cotton 18 in the present embodiment.Heat-preservation cotton 18 guarantees heat not
It is dispersed into other than baking oven, guarantees that safety protection function is played together in baking oven outer surface and external normal temperature phase.
The present embodiment has the advantages that temperature control is high-efficient, can control air velocity, and temperature and humid control are accurate；
Structure is simple, and control operation is convenient, and convenient for cleaning, environmental pollution is small.It can be heated rapidly to 240 DEG C in 30 minutes, improve
Production efficiency, can close heating system when not used.
Claims (9)
1. a kind of electrical heat tracing device, which is characterized in that including heat preservation oven and circulating fan, in the heat preservation oven in
Portion is provided with air inlet, and the top of the air inlet is provided with return air inlet, the lower part of the air inlet is provided with lower return air inlet,
The upper return air inlet is respectively communicated with an electrical heated pipings and a dehumidifying pipelines, and the lower return air inlet is connected to the electrical heated pipings,
The air inlet of the circulating fan is connected to the electrical heated pipings by return air Outer Tube, and the gas outlet of the circulating fan passes through
Outer air inlet pipe road is connected to the air inlet.
2. a kind of electrical heat tracing device according to claim 1, which is characterized in that the air inlet includes multiple water conservancy diversion
Plate, the side of the deflector connect the outer air inlet pipe road, and the other side connects rotatable air port tuyere.
3. a kind of electrical heat tracing device according to claim 1, which is characterized in that be provided in the upper return air inlet
One temperature sensor is provided with second temperature sensor in the lower return air inlet, third temperature is provided in the middle part of the air inlet
Spend sensor.
4. a kind of electrical heat tracing device according to claim 3, which is characterized in that first temperature sensor, institute
It states second temperature sensor, third temperature sensor, the electrical heated pipings and is all connected with a PLC controller.
5. a kind of electrical heat tracing device according to claim 4, which is characterized in that the circulating fan connects a frequency conversion
Device, the PLC controller connect the frequency converter.
6. a kind of electrical heat tracing device according to claim 4, which is characterized in that further include being set to outside heat preservation oven
Temperature setting device, the solid-state relay of control heating power, the temperature setting dress are provided in the electrical heated pipings
Set with the solid-state relay with the PLC controller communication connection.
7. a kind of electrical heat tracing device according to claim 3, which is characterized in that first temperature sensor, institute
State second temperature sensor, third temperature sensor is all made of thermometric platinum resistance.
8. a kind of electrical heat tracing device according to claim 1, which is characterized in that the heating source of the electrical heated pipings
For heating wire.
9. a kind of electrical heat tracing device according to claim 1, which is characterized in that the inner wall of the heat preservation oven is arranged
There is heat-preservation cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821578849.7U CN209341696U (en) | 2018-09-27 | 2018-09-27 | A kind of electrical heat tracing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821578849.7U CN209341696U (en) | 2018-09-27 | 2018-09-27 | A kind of electrical heat tracing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209341696U true CN209341696U (en) | 2019-09-03 |
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ID=67745413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821578849.7U Active CN209341696U (en) | 2018-09-27 | 2018-09-27 | A kind of electrical heat tracing device |
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| CN (1) | CN209341696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508907A (en) * | 2020-11-14 | 2022-05-17 | 邵阳千两新型环保建材有限公司 | Equipment for realizing waste heat utilization of dryer |
-
2018
- 2018-09-27 CN CN201821578849.7U patent/CN209341696U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508907A (en) * | 2020-11-14 | 2022-05-17 | 邵阳千两新型环保建材有限公司 | Equipment for realizing waste heat utilization of dryer |
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