CN203422174U - Temperature sensing probe detector - Google Patents
Temperature sensing probe detector Download PDFInfo
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- CN203422174U CN203422174U CN201320456356.7U CN201320456356U CN203422174U CN 203422174 U CN203422174 U CN 203422174U CN 201320456356 U CN201320456356 U CN 201320456356U CN 203422174 U CN203422174 U CN 203422174U
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- probe detector
- warming
- fan
- heating plate
- air outlet
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Abstract
The utility model discloses a temperature sensing probe detector and belongs to the field of an instrument fire-fighting automatic alarm system. The temperature sensing probe detector comprises a housing, a fan, a DC motor, a temperature control protection circuit, a heating sheet and a thermally sensitive resistor. The two ends of the housing are respectively provided with an air inlet and an air outlet; the fan, the DC motor, the heating sheet and the thermally sensitive resistor are sequentially arranged in the housing; the fan is disposed at the air inlet; the thermally sensitive resistor is disposed to be near to the air outlet; the fan is arranged on the DC motor; the heating sheet and the thermally sensitive resistor are connected; the temperature control protection circuit is electrically connected with the DC motor and the heating sheet respectively; and the temperature control protection circuit supplies power by use of a 24 V DC power source. According to the utility model, DC low voltage is utilized for working so that the safety of detection in inflammable and explosive places is improved, the power connection process is saved, and the working load of detection preparation is reduced.
Description
Technical field
The utility model relates to meters the fire automatic alarm control system field, particularly a kind of warming probe detector.
Background technology
Warming probe detector is popped one's head in for detection of warming, determines the stability of warming probe performance and the reliability of assurance warming probe work.The detection of warming probe is to carry out the in the situation that of system on-line operation, by special-purpose heating instrument, to probe sensor, be heated to certain temperature, while reaching the alarming value of its default, whether detection system can show the position of its warning and warn operating personnel by sound, light normal to confirm the duty of warming probe.
The warming probe detecting instrument of available technology adopting is the electrical heating air pressure gun with alternating current 220V 50Hz power work, electrical heating air pressure gun power 500-1000W.Electrical heating air pressure gun is when carrying out testing, and the electrical heating wire of electrical heating air pressure gun can produce naked light.When adopting interchange forceful electric power in chemical industry work on the spot, electrical heating air pressure gun need to connect temporary source, and connecing temporary source needs staff to open the electricity consumption of temporary electricity work ticket ability, increases the workload in testing process.
In realizing process of the present utility model, inventor finds that prior art at least exists following problem:
Existing warming probe detecting instrument uses electrical heating air pressure gun, and because electrical heating air pressure gun operating voltage is 220V, and electrical heating air pressure gun may produce naked light in heating work, increased the danger of staff at inflammable and explosive place Site Detection.When chemical industry work on the spot, connect temporary source and will open temporary electricity work ticket, formality is loaded down with trivial details, and setup time is long, causes increasing the workload of warming probe testing.At distant pump house, factory building, carry out when warming probe detects also pulling a plurality of cable connection dishes, workload is large, need to increase by three above testing staff and participate in detection, increases human cost.
Utility model content
In order to solve the problem that in prior art, operating voltage is high, work danger is large, the utility model embodiment provides a kind of warming probe detector.Described technical scheme is as follows:
A kind of warming probe detector, described warming probe detector comprises: shell, fan, direct current generator, temperature control holding circuit, heating plate and thermistor, described shell two ends are respectively arranged with air intake vent and air outlet, described fan, described direct current generator, described heating plate and described thermistor are arranged on described enclosure in turn, and described fan is positioned at described air intake vent place, described thermistor is positioned near described air outlet place, described fan is arranged on described direct current generator, described heating plate is connected with described thermistor, described temperature control holding circuit respectively with described direct current generator, described heating plate is electrically connected to, described temperature control holding circuit adopts 24V DC power supply.
As preferably, described direct supply adopts the lithium battery of DC24v30Ah capacity.
Further, described thermistor adopt 125 ℃ of Curie temperature, normal temperature resistance 5k Ω, more than proof voltage 50V.
As preferably, the temperature range that described temperature control holding circuit is controlled described heating plate is 150-180 degree Celsius.
Further, described warming probe detector also comprises fan guard, and described fan guard is arranged on described air intake vent place, and described fan guard cover is contained on described fan.
As preferably, described warming probe detector also comprises heat radiator, and described heat radiator is arranged on described enclosure, and described heat radiator and described heating plate are affixed setting.
Further, described warming probe detector also comprises heat insulation cylinder, between described thermistor and described air outlet, be provided with described heat insulation cylinder between described direct current generator and described heating plate.
As preferably, described air outlet is taper air outlet.
Further, described shell is cylindrical case.
As preferably, described shell adopts metal material.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
The utility model is used 24V DC power supply, carries out the detection to warming probe.The utility model adopts DC low-voltage work, can make heater element of the present utility model surface heat up and not produce naked light, has improved the security detecting in inflammable and explosive place.And owing to adopting DC low-voltage work, staff does not need out temporary electricity work ticket, and the utility model does not need to connect temporary source, reduces workload in testing, save and detect setup time.And the utility model is simple in structure, be easy to carry, staff does not need stube cable dish when using the utility model, simple to operate, saves human cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the warming probe detector structural representation that the utility model embodiment provides.
Wherein: 1 shell, 11 air intake vents, 12 air outlets,
2 fans,
3 direct current generators,
4 temperature control holding circuits,
5 heating plates,
6 thermistors,
7 fan guards,
8 heat radiator,
9 heat insulation cylinders,
10 warming probes.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
As shown in Figure 1, a kind of warming probe detector that the utility model embodiment provides, described warming probe detector comprises: shell 1, fan 2, direct current generator 3, temperature control holding circuit 4, heating plate 5 and thermistor 6, described shell 1 two ends are respectively arranged with air intake vent 11 and air outlet 12, described fan 2, described direct current generator 3, described heating plate 5 and described thermistor 6 are arranged on described shell 1 inside in turn, and described fan 2 is positioned at described air intake vent 11 places, described thermistor 6 is positioned near described air outlet 12 places, described fan 2 is arranged on described direct current generator 3, described heating plate 5 is connected with described thermistor 6, described temperature control holding circuit 4 respectively with described direct current generator 3, described heating plate 5 is electrically connected to, described temperature control holding circuit 4 adopts 24V DC power supply.
Wherein, direct current generator 3 adopts DC micromotor, and rotating speed is adjustable, thereby can regulate the air quantity of air intake vent 11.Thermistor 6, in order to detect the surface temperature of heating plate 5, carries out temperature control and temperature protection by temperature control holding circuit 4 when surface temperature surpasses setting value, prevents overcurrent and overtemperature fault.Heating plate 5 is selected thick film ceramic electric heating sheets, and this type of heating plate temperature rise speed is fast, and the thermal efficiency is high, and power density is large, and physical strength is high, long service life, energy-conserving and environment-protective.During the utility model work, pass through air conservation switch connection low-voltage dc power supply; temperature control holding circuit 4 enters duty; temperature control holding circuit 4 is given heating plate 5 and direct current generator 3 energisings; heating plate 5 heats up; the holding circuit of temperature control simultaneously 4 is adjusted the intake that direct current generator 3 rotating speeds change fan 2; thereby temperature and the wind speed of controlling the utility model air outlet 12 places, make temperature and wind speed reach regulation requirement.
Particularly, temperature control holding circuit 4 is by direct supply, and integrated stable voltage circuit and observing and controlling circuit temperature form.The utility model is connected low-voltage dc power supply, and fan 2 operations simultaneously temperature control circuit enter duty, and RT1 is PTC thermistor 6 devices, detects the surface temperature of heating plate 5.RP is variable resistor, has the effect of preset temperature value concurrently.When the utility model switches on power, mu balanced circuit output direct current 12V voltage, by the dividing potential drop of RT1 and RP, R2, provides the electronic switch consisting of NE555 time-base integrated circuit input signal, make 2,6 pin of NE555 be input as high level, now 3 pin are output as low level, triode BG cut-off, and the current collection of BG is high level very, and then the grid that makes field effect transistor VT obtains control voltage, field effect transistor VT conducting, heating plate 5 energising heating, enter soaking condition.Along with the rising of heating plate 5 temperature, the resistance of RT1 increases, and 2, the 6 pin input voltages of NE555 reduce, in the time of near heating plate 5 temperature further rise to predetermined value, RT1 reaches Curie temperature, and the resistance of RT1 will be the increase of step evolution, more than can reaching 500k Ω, make 2,6 pin of NE555 be input as low level, inner trigger upset, 3 pin output high level, make triode BG saturation conduction, BG current collection is low level very, field effect transistor VT cut-off, and heating plate 5 stops heating.When heating plate 5 temperature drop to lower than approximately 5 ℃ of preset values, RT1 resistance is recovered normal variation value, and 2, the 6 pin inputs of NE555 are again high level, and field effect transistor VT grid obtains again control voltage, makes field effect transistor VT conducting, and R is heating power again.Operation so repeatedly, temperature control holding circuit 4 reaches temperature automatically controlled and effect temperature protection.
The utility model is used 24V DC power supply, carries out the detection to warming probe 10.The utility model adopts DC low-voltage work, can make heater element of the present utility model surface heat up and not produce naked light, has improved the security detecting in inflammable and explosive place.And owing to adopting DC low-voltage work, staff does not need out temporary electricity work ticket, and the utility model does not need to connect temporary source, reduces workload in testing, save and detect setup time.And the utility model is simple in structure, be easy to carry, staff does not need stube cable dish when using the utility model, simple to operate, saves human cost.
As preferably, described direct supply adopts the lithium battery of DC24v30Ah capacity.This lithium battery capacity is large, longevity of service, and charging is rapidly.
As shown in Figure 1, described thermistor 6 adopt 125 ℃ of Curie temperature, normal temperature resistance 5k Ω, more than proof voltage 50V.
As shown in Figure 1, the temperature range that described temperature control holding circuit 4 is controlled described heating plate 5 is 150-180 degree Celsius.If heating plate 5 temperature are lower than 150 ℃, the hot blast at air outlet 12 places will, lower than 80 ℃, can not reach the set temperature of warming probe 10, if heating plate 5 temperature are higher than 180 ℃ like this, the too high meeting of hot blast temperature at air outlet 12 places makes warming 10 temperature distortions of popping one's head in, and damages warming probe 10.
As shown in Figure 1, described warming probe detector also comprises fan guard 7, and described fan guard 7 is arranged on described air intake vent 11 places, and described fan guard 7 covers are contained on described fan 2.Described fan guard 7, for the protection of the normal operation of fan 2, prevents that other foreign material from entering the utility model.
As shown in Figure 1, described warming probe detector also comprises heat radiator 8, and described heat radiator 8 is arranged on described shell 1 inside, and described heat radiator 8 is affixed setting with described heating plate 5.Heat radiator 8 can play the effect of rapid radiating and cooling to the parts in the utility model, protect the normal operation of other parts.
As shown in Figure 1, described warming probe detector also comprises heat insulation cylinder 9, between described thermistor 6 and described air outlet 12, be provided with described heat insulation cylinder 9 between described direct current generator 3 and described heating plate 5.Heat insulation cylinder 9 by air outlet 12 and heating plate 5 from a distance; direct current generator 3 and described heating plate 5 have been separated simultaneously; avoid like this excess Temperature of air outlet 12 and direct current generator 3 present positions; protection direct current generator 3; and heat insulation cylinder 9 can also play concentrates hot wind action, avoids heat diffusion.
As shown in Figure 1, described air outlet 12 is taper air outlet.Taper air outlet is conducive to hot blast to be concentrated, and avoids heat diffusion.From those skilled in the art, described air outlet 12 can also be set to other shape, and air outlet needs only to meet hot blast is concentrated, and avoids the function of heat diffusion.
As shown in Figure 1, described shell 1 is cylindrical case.
As shown in Figure 1, described shell 1 adopts metal material.Shell 1 is convenient to the heat radiation of parts in the course of the work of the utility model for metal material, prevent in the course of work that part is because crossing heat-induced damage, and metal material durability is good.
The utility model is after switching on power, direct current generator 3 work drive fan 2 to rotate, fan 2 is by air intake shell 1 inside of air intake vent 11, to air outlet 12, flow, when direct current generator 3 drives fan 2 to rotate, heating plate 5 starts to heat up, when Air Flow arrives heating plate 5,5 pairs of air heat of heating plate, reach between 150 to 180 degrees Celsius of desired temperature air, and then air blows to warming probe 10 through air outlet 12.Wherein, the utility model can be constant in desired scope by air outlet 12 place's air themperatures, by temperature control holding circuit 4, realize, when thermistor 6 sense temperature are when too high, thermistor 6 resistances raise, resistance is elevated to certain limit, field effect transistor cut-off in temperature control holding circuit 4, heating plate 5 stops heating, when heating plate 5 temperature drop in desired temperature range, thermistor 6 recovers normal value, field effect transistor conducting, make heating plate 5 normal operations, operation repeatedly, temperature control holding circuit 4 can be controlled at heating plate 5 temperature in desired temperature range.
The utility model detects use for the warming probe of fire automatic alarm system, is applicable to chemical production device, can improve security and high efficiency that inflammable and explosive hazardous area is detected.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. warming probe detector, it is characterized in that, described warming probe detector comprises: shell, fan, direct current generator, temperature control holding circuit, heating plate and thermistor, described shell two ends are respectively arranged with air intake vent and air outlet, described fan, described direct current generator, described heating plate and described thermistor are arranged on described enclosure in turn, and described fan is positioned at described air intake vent place, described thermistor is positioned near described air outlet place, described fan is arranged on described direct current generator, described heating plate is connected with described thermistor, described temperature control holding circuit respectively with described direct current generator, described heating plate is electrically connected to, described temperature control holding circuit adopts 24V DC power supply.
2. warming probe detector according to claim 1, is characterized in that, described direct supply adopts the lithium battery of DC24v30Ah capacity.
3. warming according to claim 2 probe detector, is characterized in that, described thermistor adopts 125 ℃ of Curie temperature, normal temperature resistance 5k Ω, more than proof voltage 50V.
4. warming probe detector according to claim 3, is characterized in that, the temperature range that described temperature control holding circuit is controlled described heating plate is 150-180 degree Celsius.
5. warming probe detector according to claim 4, is characterized in that, described warming probe detector also comprises fan guard, and described fan guard is arranged on described air intake vent place, and described fan guard cover is contained on described fan.
6. warming according to claim 5 probe detector, is characterized in that, described warming probe detector also comprises heat radiator, and described heat radiator is arranged on described enclosure, and described heat radiator and described heating plate are affixed setting.
7. warming according to claim 6 probe detector, is characterized in that, described warming probe detector also comprises heat insulation cylinder, between described thermistor and described air outlet, be provided with described heat insulation cylinder between described direct current generator and described heating plate.
8. according to the warming probe detector described in claim 1-7 any one, it is characterized in that, described air outlet is taper air outlet.
9. warming probe detector according to claim 8, is characterized in that, described shell is cylindrical case.
10. warming probe detector according to claim 9, is characterized in that, described shell adopts metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320456356.7U CN203422174U (en) | 2013-07-29 | 2013-07-29 | Temperature sensing probe detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320456356.7U CN203422174U (en) | 2013-07-29 | 2013-07-29 | Temperature sensing probe detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203422174U true CN203422174U (en) | 2014-02-05 |
Family
ID=50021269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320456356.7U Expired - Fee Related CN203422174U (en) | 2013-07-29 | 2013-07-29 | Temperature sensing probe detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203422174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758728A (en) * | 2016-04-18 | 2016-07-13 | 吉林大学 | Variable-temperature composite load in-situ testing platform |
-
2013
- 2013-07-29 CN CN201320456356.7U patent/CN203422174U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758728A (en) * | 2016-04-18 | 2016-07-13 | 吉林大学 | Variable-temperature composite load in-situ testing platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20210729 |