CN202694182U - Combined temperature control device - Google Patents
Combined temperature control device Download PDFInfo
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- CN202694182U CN202694182U CN 201220374810 CN201220374810U CN202694182U CN 202694182 U CN202694182 U CN 202694182U CN 201220374810 CN201220374810 CN 201220374810 CN 201220374810 U CN201220374810 U CN 201220374810U CN 202694182 U CN202694182 U CN 202694182U
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Abstract
The utility model discloses a combined temperature control device which comprises a power controller and a temperature sensor, a fifth timer, a combined aural and visual alarm, a first temperature controller, a second temperature controller, a third temperature controller, a first timer, a second timer, a third timer and a fourth timer, wherein the first temperature controller, the second temperature controller and the third temperature controller are combined in a cordwood system type, and the first timer, the second timer, the third timer and the fourth timer are combined in a cordwood system type. The combined temperature control device solves the problem that the traditional temperature controller can not meet the requirement of multi-timing and multi-time setting of coal analysis.
Description
Technical field
The utility model relates to a kind of domain of control temperature, more particularly, relates to a kind of for carrying out temperature controlled combined type temperature control equipment in slow ash, fast ash and volatile matter analytic process.
Background technology
At present, normally used coal analysis comprises slow ash analysis, fast ash analysis and volatile matter analysis.Slow ash analysis, be also referred to as slow-ashing method, it (for example puts into experimental electric furnace with a certain amount of dry coal sample, muffle furnace) in, be heated to predetermined temperature (for example 815 ± 10 ℃) with certain speed, ashing and calcination be to constant mass, accounts for the percentage of coal sample quality as the ashing productive rate with the quality of residue; Fast ash analysis, it puts into a certain amount of coal sample on the electric furnace that is heated in advance predetermined temperature (for example 815 ± 10 ℃), and ashing and calcination be to constant mass, accounts for the percentage of coal sample quality as the ashing productive rate with the quality of residue; Volatile matter is analyzed, its with a certain amount of dry coal sample under predetermined temperature (for example 900 ± 10 ℃), the secluding air heating schedule time (for example 7 minutes), account for the percentage of coal sample quality with the quality that reduces, deduct the moisture mouth (Mad) of this coal sample as volatile producibility.
In order to carry out better above-mentioned slow ash, fast ash and volatile matter analysis, need to carry out more accurately temperature control.But existing temperature controller can't satisfy the required various temperature control of above-mentioned coal analysis process.
The utility model content
In view of this, the purpose of this utility model is to provide temperature controller and the timer combined type temperature control equipment so that the mode of brick pattern combination makes up, and can not satisfy the needs of the many Temperature Settings of many timings of coal analysis to solve existing temperature controller.
A kind of combined type temperature control equipment according to the utility model embodiment has power controller and temperature sensor.Described combined type temperature control equipment also comprises: the first temperature controller, the second temperature controller and the 3rd temperature controller that are connected to described temperature sensor and power controller, when wherein, each temperature controller is included in the temperature about the signal designation electric furnace of furnace temperature that receives from temperature sensor and reaches separately capping temperature the upper limit alarm switch of closure and when the temperature about the signal designation electric furnace of circuit temperature that receives from temperature sensor reaches separately setting lower limit temperature the lower limit alarm switch of closure; First timer, second timer, the 3rd timer and the 4th timer, wherein, each timer in first timer, second timer, the 3rd timer and the 4th timer has the normal open switch of timing time at timer closure when reaching separately timing time; The 5th timer has the only normal open switch of closure during the timing of described the 5th timer; Audible-visual annunciator, the two ends of the power switch of this audible-visual annunciator are connected respectively to the two ends of the normal open switch of described the 5th timer, the overload alarm lamp, wherein, the two ends of the power switch of the 5th timer are connected respectively to the two ends of the normal open switch of first timer, the two ends of the normal open switch of second timer, the two ends of the upper limit alarm switch of the two ends of the normal open switch of the 3rd timer and the second temperature controller, the two ends of the power switch of first timer are connected respectively to the two ends of the upper limit alarm switch of the first temperature controller, the power switch of overload alarm lamp is connected to the upper limit alarm switch of the 3rd temperature controller, the normal open switch of lower limit alarm switch and the 4th timer so that alarm switch in the upper limit alarm switch of the 3rd temperature controller and the lower limit alarm switch is closed and the normal open switch of the 4th timer when closed the power switch of described overload alarm lamp closed.
In addition, the upper limit auxiliary alarm switch of closure when described the 3rd temperature controller also is included in the temperature about the signal designation electric furnace of circuit temperature that receives from temperature sensor and reaches the upper limit auxiliary temperature of setting, and the two ends of described upper limit auxiliary alarm switch are connected respectively to the two ends of the power switch of the 5th timer.
In addition, described audible-visual annunciator comprises hummer and light-emitting alarm.
As mentioned above, according to combined type temperature control equipment of the present utility model, make up temperature controller and timer in the brick pattern mode, thereby solved the needs that existing temperature controller can not satisfy the many Temperature Settings of many timings of coal analysis.
Description of drawings
Fig. 1 is the block diagram that illustrates according to the combined type temperature control equipment of embodiment of the present utility model;
Fig. 2 is the block diagram of detailed formation that the temperature control equipment of Fig. 1 is shown;
Fig. 3 is the block diagram that the formation of temperature controller shown in Figure 2 is shown.
Embodiment
Now the utility model embodiment is described in detail, its example shown in the accompanying drawings, wherein, identical label represents same parts all the time.Below with reference to the accompanying drawings embodiment is described to explain the utility model.
As shown in Figure 1, comprise power controller 10, temperature sensor 20, the first temperature controller 100, the second temperature controller 200 and the 3rd temperature controller 300 according to combined type temperature control equipment of the present utility model.
As shown in Figure 1, each temperature controller in the first temperature controller 100, the second temperature controller 200 and the 3rd temperature controller 300 is connected to power controller 10 and temperature sensor 20.Described temperature controller 100 to 300 can from temperature sensor receive about the signal of the temperature of electric furnace and according to the signal of described temperature about electric furnace by the heating of power controller 10 controls to electric furnace.
Here, preferably, the first temperature controller 100 is used for slow grey temperature control, and the second temperature controller is used for fast grey temperature control, and the 3rd temperature controller 300 is used for the control of volatile matter temperature, but is not limited to this.
Below, the structure of aforesaid temperature controller is described with reference to Fig. 3, in Fig. 3, the structure of temperature controller will be described as example take the first temperature controller 100.But need to prove that the first temperature controller to the three temperature controllers can have identical structure.
In addition, as shown in Figure 3, each temperature controller comprises upper limit alarm switch 100a and lower limit alarm switch 100b.Described upper limit alarm switch is closed when the temperature about the signal designation electric furnace of furnace temperature that receives from temperature sensor reaches separately capping temperature, and the lower limit alarm switch is closed when the temperature about the signal designation electric furnace of circuit temperature that receives from temperature sensor reaches separately setting lower limit temperature.Preferably, described upper limit alarm switch 100a and lower limit alarm switch 100b are controlled by processor 130.
Clearly, above-mentioned temperature controller can be realized by temperature control equipment commonly used in this area.
Below, describe in detail according to combined type temperature control equipment of the present utility model with reference to Fig. 2.As shown in Figure 2, except as shown in Figure 1 power controller (not shown), temperature sensor (not shown) and the first temperature controller 100, the second temperature controller 200 and the 3rd temperature controller 300, also can comprise first timer 510, second timer 520, the 3rd timer 530, the 4th timer 540, the 5th timer 550, audible-visual annunciator 560 and overload alarm lamp 570 according to combined type temperature control equipment of the present utility model.
As known to those skilled in the art, usually, timer (being also referred to as timer) has power switch and normal open switch or normally closed switch (or, contact).That is, timer will begin timing when the power supply of described timer is switched on (for example, the closure of power switch), and described normal open switch or only closed during described timer timing or disconnection of normally closed switch.Perhaps, timer begins timing when power supply is switched on, and when the timing time of described timer reached the setting timing time, described normal open switch or normally closed switch were with closure or disconnection.And this closure or disconnection can recover manually.
In addition, timer generally also can comprise the timing time setting device for the timing time of setting timer.The structure of above-mentioned timer belongs to common practise, does not repeat them here.
Aforesaid, the normal open switch of closure when first timer to 510 to each timer in the 4th timer 540 can be included in the timer timing time and reaches separately predetermined timing time, and the 5th timer 550 only can comprise normal open switch closed during the timing of the 5th timer.
In addition, first timer to 510 to each timer in the 5th timer 550 also can comprise the timing time setting device for the timing time of setting timer.
As mentioned above, the 5th timer 550 can comprise the only normal open switch of closure during the timing of the 5th timer.In addition, the 5th timer 550 also can comprise the timing time setting device for the timing time (that is, the 5th schedule time) of setting the 5th timer.
Audible-visual annunciator 560 sends warning by sound and light when its power connection.Specifically, the two ends of the power switch of described audible-visual annunciator 560 are connected respectively to the two ends of the normal open switch of the 5th timer 550, therefore, during 550 timing of described the 5th timer, because the normal open switch of the 5th timer 550 is closed, therefore the two ends of the power switch of audible-visual annunciator 550 are by short circuit, and namely the power supply of audible-visual annunciator 550 is access in, so audible-visual annunciator 550 will send warning.Here, audible-visual annunciator 550 can comprise hummer and light-emitting alarm.
In structure shown in Figure 2, the two ends of the power switch of the 5th timer 550 are connected respectively to the two ends of the upper limit alarm switch of the two ends of normal open switch of two ends, the 3rd timer 530 of normal open switch of two ends, second timer 520 of the normal open switch of first timer 510 and the second temperature controller 200.The two ends of the power switch of first timer 510 are connected respectively to the two ends of the upper limit alarm switch of the first temperature controller 100.The two ends of the power switch of overload alarm lamp 570 are connected respectively to the normal open switch of upper limit alarm switch, lower limit alarm switch and the 4th timer 540 of the 3rd temperature controller 300 so that alarm switch in the upper limit alarm switch of the 3rd temperature controller 300 and the lower limit alarm switch is closed and the normal open switch of the 4th timer 540 when closed the trigger switch of described overload alarm lamp closed.
In combined type temperature control equipment as shown in Figure 2, the first temperature controller 100 and first timer 510 consist of the first temperature control path, the second temperature controller 200 and second timer consist of the second temperature control path, and the 3rd temperature controller 300, the 3rd timer 530 and the 4th timer 540 and overload alarm lamp 570 consist of the 3rd temperature control path.
In the first temperature control path, aforesaid, first timer 510 can comprise power switch and the normal open switch of closure when the timing time of described first timer reached for first schedule time.In addition, first timer 510 also can comprise the timing time setting device for the timing time (that is, first schedule time) of setting first timer.
As shown in Figure 2, in the first temperature control path, the two ends of the power switch of first timer 510 are connected respectively to the two ends of the upper limit alarm switch of the first temperature controller 100, and the two ends of the normal open switch of first timer 510 are connected respectively to the two ends of the power switch of the 5th timer 550.
Therefore, when the temperature about the signal designation electric furnace of furnace temperature that receives from temperature sensor 20 when the first temperature controller 100 reaches the ceiling temperature of setting of the first temperature controller 100, the upper limit alarm switch of the first temperature controller 100 is with closure, therefore the power switch of first timer 510 is also with closure, and first timer 510 will begin timing.
When the timing time of first timer 510 reached for first schedule time, the normal open switch of first timer 510 was with closure, and therefore the power switch of the 5th timer 550 is also with closure, and the 5th timer 550 will begin timing.During 550 timing of the 5th timer, the normal open switch of the 5th timer 550 is with closure, and audible-visual annunciator 560 begins to report to the police.When the timing time of the 5th timer 550 reaches predetermined timing time (that is, the 5th schedule time), the normal open switch of the 5th timer 550 will disconnect, and the warning of audible-visual annunciator 560 will finish.
Whether in the first temperature control path, the power switch of the first temperature controller 100 is connected to the first change-over switch, that is, control to 100 power supplies of the first temperature controller by the closed and disconnected of the first change-over switch.
In the second temperature control path, as mentioned above, second timer 520 can comprise power switch and the normal open switch of closure when the timing time of second timer reached for second schedule time.In addition, second timer 520 also can comprise the timing time setting device for the timing time (that is, second schedule time) of setting second timer.
As shown in Figure 2, in the second temperature control path, the two ends of the upper limit alarm switch of the two ends of the normal open switch of second timer 520 and the second temperature controller 200 are connected respectively to the two ends of the power switch of described the 5th timer 550.
In the second temperature control path, when the upper limit alarm switch closure of the normal open switch of second timer 520 and/or the second temperature controller 200, the power switch of the 5th timer 550 is with closure, and the 5th timer 550 will begin timing.During 550 timing of the 5th timer, the normal open switch of the 5th timer 550 is with closure, and audible-visual annunciator 560 begins to report to the police.When the timing time of the 5th timer 550 reaches predetermined timing time (that is, the 5th schedule time), the normal open switch of the 5th timer 550 will disconnect, and the warning of audible-visual annunciator 560 will finish.
Whether in the second temperature control path, the power switch of the second temperature controller 200 is connected to the second change-over switch, that is, control to 200 power supplies of the second temperature controller by the closed and disconnected of the second change-over switch.
In the 3rd temperature control path, as mentioned above, the 3rd timer 530 can comprise power switch and the normal open switch of closure when the timing time of the 3rd timer reached for the 3rd schedule time.In addition, the 3rd timer 510 also can comprise the timing time setting device for the timing time (that is, the 3rd schedule time) of setting the 3rd timer.
The 4th timer 540 can comprise power switch and the normal open switch of closure when the timing time of the 4th timer reached for the 4th schedule time.In addition, the 4th timer 540 also can comprise the timing time setting device for the timing time (that is, the 4th schedule time) of setting the 4th timer.
The upper limit auxiliary alarm switch of closure when described the 3rd temperature controller 300 also is included in the temperature about the signal designation electric furnace of circuit temperature that receives from temperature sensor and reaches the upper limit auxiliary temperature of setting, and the two ends of described upper limit auxiliary alarm switch are connected respectively to the two ends of the power switch of the 5th timer.
As shown in Figure 2, the two ends of the normal open switch of the 3rd timer 530 are connected respectively to the two ends of the power switch of the 5th timer 550.
The two ends of the power switch of overrun alarm 570 are connected respectively to the two ends of the upper limit alarm switch of the 3rd temperature controller 300, the two ends of the normal open switch of the two ends of lower limit alarm switch and the 4th timer 540, specifically, overload alarm lamp 570 is connected respectively to the upper limit alarm switch of the 3rd temperature controller 300, the normal open switch of lower limit alarm switch and the 4th timer 540, so that alarm switch in the upper limit alarm switch of the 3rd temperature controller 300 and the lower limit alarm switch is closed and the normal open switch of the 4th timer when closed the power switch of described overload alarm lamp 570 closed, overload alarm lamp 570 will send warning.
Whether in the 3rd temperature control path, the power switch of the 3rd temperature controller 300 is connected to the 3rd change-over switch, that is, control to 300 power supplies of the 3rd temperature controller by the closed and disconnected of the 3rd change-over switch.
Below, describe in detail based on aforesaid combined type temperature control equipment and carry out slow ash, fast ash and the temperature controlled process of volatile matter.
Slow grey temperature control
In electric furnace, put into after the sample, the first change-over switch of closed the first control path, thereby to the first temperature controller 100 and first timer 510 power supplies.
At first, divide two stage control electric furnaces to heat up by the first temperature controller 100 with the program that sets, namely be raised to 500 degrees centigrade from room temperature first, then entered constant temperature 30 minutes, be warmed up to again afterwards 815 degrees centigrade.Spend (that is, the ceiling temperature of the first temperature controller 100) afterwards when the electric furnace temperature reaches 815, the upper limit alarm switch closure of the first temperature controller 100, thereby the power switch of connection first timer 510 are so that first timer 510 beginning timing.When first timer 510 timing times reach first schedule time (for example, 60 minutes), the normal open switch of first timer 510 is closed, causes the power supply of the 5th timer 550 to be switched on, the 550 beginning timing of the 5th timer.During the timing of the 5th timer 550, the normal open switch of the 5th timer 550 is closure, thereby connects audible-visual annunciator 560 and report to the police, and represents that slow grey process finished, and call user's attention will in time be taken out sample pretreating.
When the timing time of the 5th timer 550 reached for the 5th schedule time, the normal open switch of the 5th timer 550 was got back to off-state (that is, normally open), disconnected the power supply of audible-visual annunciator 560, audible-visual annunciator 560 stop alarms.
If the user also needs to do the inspection of ash content, the trigger switch that only needs to connect fixed first o'clock device 510 just can start first timer 510 work again.Time can be grasped by the demonstration situation of user's root a tree name first timer 510.
Fast ash control
First do not put sample, the second change-over switch of closed the second control path, thereby to 200 power supplies of the second temperature controller.
At first heated up with given pace with the temperature spot control electric furnace that sets by the second temperature controller 200, when (for example arriving the first design temperature, 850 degrees centigrade) time, the upper limit alarm switch of the second temperature controller 200 is with closure, thereby trigger 500 work of the 5th timer, the normal open switch of the 5th timer 550 sends warning with closure thereby connect audible-visual annunciator 560, represent that the first design temperature arrives, reminding user is in time put into sample.
When the user begins to put sample (timing mode) or discharge sample (not timing mode), the user just can connect the power supply of second timer 520, make second timer 520 beginning timing, meanwhile, the second temperature controller 200 (for example is switched to the second design temperature, 815 degrees centigrade), when the timing time of second timer 520 (for example reaches the schedule time, 40 minutes) after, the normal open switch of second timer 520 is closed, thereby triggers 550 work of the 5th timer, and the normal open switch of the 5th timer 550 is closed and make audible-visual annunciator 560 send warning, represent that fast grey process finishes, reminding user in time takes out sample pretreating.
When the timing time of the five or five timer 550 reached for the 5th schedule time, the normal open switch of the 5th timer 550 returned to normally open, cut off the power supply of audible-visual annunciator 560, audible-visual annunciator 560 stop alarms.
Here, in order to make the user there is a setup time, can the timing time of second timer 520 in advance a bit, such as 1-3 minute in advance, be specifically decided by operating position.If the user also needs to do the inspection of ash content, only the trigger switch of second timer 520 need to be turn-offed first and then connect and just can again start second timer 520 and work, the time is grasped by the user.
Volatile matter control
Do not put first sample, the 3rd change-over switch of closed the 3rd control path, thus power to the 3rd temperature controller 300 and the 3rd timer 530, the 4th timer 540.
At first, heated up with given pace with the temperature spot control electric furnace that sets by the 3rd temperature controller 300, when (for example arriving the first design temperature, 920 degrees centigrade) time, the auxiliary upper limit alarm switch of the 3rd temperature controller 300 is worked closure thereby trigger the 5th timer 550, the normal open switch closure of the 5th timer 550 is to connect the trigger switch of audible-visual annunciator 560, make audible-visual annunciator 560 send warning, represent that the first design temperature arrives, reminding user is in time put into sample.
After the user puts into fast sample or closes upper furnace door, but the trigger switch of demand working the 3rd timer 530 and the 4th timer 540 just, so that described two timers are started working simultaneously.At this moment, the 3rd temperature controller 300 is switched to the second design temperature (for example, 900 degrees centigrade), and the temperature of electric furnace keeps constant temperature according to this temperature.Wherein, the timing time of the 3rd timer 530 is 7 minutes, when amounting to heat as volatile matter.The timing time of the 4th timer 540 is 3 minutes, to be used as the inspection timing of transfiniting in 3 minutes, the bound alarm switch of the 4th timer 540 and the 3rd temperature controller 300 is used in conjunction with, inspection is in 3 minutes behind the upper furnace door of pass, whether the temperature of electric furnace surpasses higher limit (900+10 degree centigrade), perhaps is lower than lower limit (910-10 degree centigrade).In other words, after the time arrived 3 minutes, the normal open switch of the 4th timer 540 was closed, and the 4th timer 540 is controlled the trigger switch of the pilot lamp 570 that transfinites with the bound alarm switch of the 3rd temperature controller 300.
If after 3 minutes, the temperature of electric furnace surpasses higher limit or is lower than lower limit, then the upper limit or lower limit alarm switch are connected, connect the power switch of the pilot lamp 570 that transfinites with the normal open switch of the closure of the 4th timer 540, light the pilot lamp 570 that transfinites, the temperature of electric furnace transfinites in the prompting user 3 minutes, and this time invalidate the test can abort take out sample.At this moment, need to disconnect the trigger switch of the 3rd timer 530, the 4th timer 540, when waiting the temperature of electric furnace to return to the first setting value, prepare to do next time again.
If the temperature of electric furnace does not transfinite after 3 minutes, then test can be proceeded.When the time arrives 7 minutes, the normal open switch of the 3rd timer 530 is closed, trigger 550 work of the 5th timer, thereby the closed trigger switch of connecting audible-visual annunciator 560 of the normal open switch of the 5th timer 550, make audible-visual annunciator 560 luminous alarms, the expression volatilization process is finished, and call user's attention will be taken out fast sample and be processed.
When the timing time of the 5th timer 550 reached for the 5th schedule time, the normal open switch of the 5th timer 550 returned to normally open, cut off the trigger switch of audible-visual annunciator 560, and audible-visual annunciator 560 stops.
Equally, in order to make the user arranged a setup time, the timing time of the 3rd timer 530 can be shifted to an earlier date a bit in 7 minutes, the concrete time is decided by operating position.
Introduction by the above-mentioned course of work can be seen, for slow grey process, only need to start the first temperature controller after putting into sample just passable, reminds to audible-visual annunciator when the time one, in time takes out sample and has just finished, and operates very simple.For fast grey process, only need to start first the second temperature controller work, equitemperature to and report to the police after, put into sample and start timer work, and then take out sample after by the time reporting to the police and just finished, operation is same simple.And for the volatile matter control procedure, also only need to start the combination of the 3rd temperature controller, equitemperature to after put into sample, start simultaneously two timer work, as without transfiniting unusual as long as just can finish in 7 minutes, wait alarm one sound, just can take out sample and finish.Therefore briefly, slow grey process only needs the user to connect a switch just, and fast ash and volatile matter process are also as long as the user has connected respectively two switches.
According to combined type temperature control equipment of the present utility model, can be used in ash content of coal and measure outside the temperature control, can also be by change temperature-time parameter as otherwise control purposes.For example, the first temperature control path just can be used as a kind of multi-segment Programmable temperature control, and it has 50 sections artificial intelligence PID controls, can satisfy many temperature section controls and a lot of demand for control; The second temperature control path 2 can be used as a kind of single temperature spot thermostatic control, and can realize that by time switch two set-points switch; The 3rd temperature control path is the same with the second temperature control path, can realize that also single temperature spot thermostatic control and two set-point switch, and have the deixis of transfiniting.Therefore, combined type temperature control equipment of the present utility model is similar to omnipotent temperature controller, if operating voltage and power are suitable, can be applicable to nearly all temperature control field and closes.
According to combined type temperature control equipment of the present utility model, be suitable for the temperature demand for control of coal analysis process and made up temperature controller and timer in the brick pattern mode, thereby solved the needs that existing temperature controller can not satisfy the many Temperature Settings of many timings of coal analysis.
Although represented and described embodiment more of the present utility model, but those skilled in the art should understand that, in the situation that does not break away from the principle of the present utility model that limited its scope by claim and equivalent thereof and spirit, can make amendment to these embodiment.
Claims (3)
1. a combined type temperature control equipment has power controller and temperature sensor, it is characterized in that, also comprises:
Be connected to the first temperature controller, the second temperature controller and the 3rd temperature controller of described temperature sensor and power controller, when wherein, each temperature controller is included in the temperature about the signal designation electric furnace of furnace temperature that receives from temperature sensor and reaches separately capping temperature the upper limit alarm switch of closure and when the temperature about the signal designation electric furnace of circuit temperature that receives from temperature sensor reaches separately setting lower limit temperature the lower limit alarm switch of closure;
First timer, second timer, the 3rd timer and the 4th timer, wherein, each timer in first timer, second timer, the 3rd timer and the 4th timer has the normal open switch of timing time at timer closure when reaching separately timing time;
The 5th timer has the only normal open switch of closure during the timing of described the 5th timer;
Audible-visual annunciator, the two ends of the power switch of this audible-visual annunciator are connected respectively to the two ends of the normal open switch of described the 5th timer,
The overload alarm lamp,
Wherein, the two ends of the power switch of the 5th timer are connected respectively to the two ends of the upper limit alarm switch of the two ends of normal open switch of two ends, the 3rd timer of normal open switch of two ends, second timer of the normal open switch of first timer and the second temperature controller
The two ends of the power switch of first timer are connected respectively to the two ends of the upper limit alarm switch of the first temperature controller,
The power switch of overload alarm lamp is connected to the normal open switch of upper limit alarm switch, lower limit alarm switch and the 4th timer of the 3rd temperature controller so that alarm switch in the upper limit alarm switch of the 3rd temperature controller and the lower limit alarm switch is closed and the normal open switch of the 4th timer when closed the power switch of described overload alarm lamp closed.
2. combined type temperature control equipment as claimed in claim 1, it is characterized in that, the upper limit auxiliary alarm switch of closure when described the 3rd temperature controller also is included in the temperature about the signal designation electric furnace of circuit temperature that receives from temperature sensor and reaches the upper limit auxiliary temperature of setting, and the two ends of described upper limit auxiliary alarm switch are connected respectively to the two ends of the power switch of the 5th timer.
3. combined type temperature control equipment as claimed in claim 1 is characterized in that, described audible-visual annunciator comprises hummer and light-emitting alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220374810 CN202694182U (en) | 2012-07-31 | 2012-07-31 | Combined temperature control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220374810 CN202694182U (en) | 2012-07-31 | 2012-07-31 | Combined temperature control device |
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| CN202694182U true CN202694182U (en) | 2013-01-23 |
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| CN 201220374810 Expired - Fee Related CN202694182U (en) | 2012-07-31 | 2012-07-31 | Combined temperature control device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106544048A (en) * | 2016-09-27 | 2017-03-29 | 北京神雾环境能源科技集团股份有限公司 | The heat accumulating type fast pyrogenation furnace temperature control method of control radial canal make-and-break time |
| CN106569518A (en) * | 2016-10-17 | 2017-04-19 | 长沙开元仪器股份有限公司 | Temperature control method for volatile component measurement of coal of muffle furnace |
-
2012
- 2012-07-31 CN CN 201220374810 patent/CN202694182U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106544048A (en) * | 2016-09-27 | 2017-03-29 | 北京神雾环境能源科技集团股份有限公司 | The heat accumulating type fast pyrogenation furnace temperature control method of control radial canal make-and-break time |
| CN106569518A (en) * | 2016-10-17 | 2017-04-19 | 长沙开元仪器股份有限公司 | Temperature control method for volatile component measurement of coal of muffle furnace |
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