CN203856610U - Gas heating entering-retreating control device - Google Patents
Gas heating entering-retreating control device Download PDFInfo
- Publication number
- CN203856610U CN203856610U CN201420252599.3U CN201420252599U CN203856610U CN 203856610 U CN203856610 U CN 203856610U CN 201420252599 U CN201420252599 U CN 201420252599U CN 203856610 U CN203856610 U CN 203856610U
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- Prior art keywords
- heater
- branch road
- contactor
- tds
- temperature
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Abstract
The utility model discloses a gas heating entering-retreating control device which comprises a heater and a temperature control loop. A contactor is arranged on a power supply line of the heater, the temperature control loop comprises a first branch and a second branch which are parallelly connected with a control power source, the first branch comprises an excitation contactor auxiliary contact, a first temperature control switch and a coil of a relay in series connection, the second branch comprises a normally-opened contact of the relay and a coil of the contactor in series connection, and the contactor controls working of the heater according to states of the excitation contactor auxiliary contact and the first temperature control switch. By the gas heating entering-retreating control device, automatic entering of gas heating after a gas turbine starts and automatic retreating of gas heating after the gas turbine stops are realized, so that timely heating of gas entering the gas turbine is guaranteed to improve gas quality, service life of the gas turbine is prolonged, damage to the heater due to being overheated is avoided, and maintenance cost is saved.
Description
Technical field
The utility model relates to heating control field, especially, relates to a kind of gas heating throwing and moves back control gear.
Background technique
In combustion engine power station running, in order to remove the impurity of moisture in combustion gas and some polymeric compound, need to be to the gas heating that enters combustion machine to 60-90 ℃, to improve combustion gas quality, raising combustion machine working life.
But in combustion engine power station in the past; the input of heater and exit by operations staff and manually carry out; as operations staff manually closes or disconnects the power switch of heater; heater button closes after i.e. combustion machine operation; start gas heating; after shutdown, disconnect in time heater power source switch, stop gas heating.If operations staff forgets the heater power source that closes during start, combustion gas will, less than heating, affect combustion machine working life; If operations staff forgets disconnection heater power source after shutting down, heater, by overheated, may damage.In actual gas heating is controlled, often because forgetting, operations staff closes in time heater power source, cause the event that occurs that heater burns out.Therefore, need a kind of gas heating throwing simple to operate, that control is convenient, with low cost of exploitation badly and move back control gear.
Model utility content
The utility model object is to provide a kind of gas heating to throw and moves back control gear, controls gas heating that the heating of combustion gas causes not in time or overheated heater is damaged technical problem to solve existing manual mode.
For achieving the above object, the technical solution adopted in the utility model is as follows:
Gas heating is thrown and is moved back a control gear, and this control gear comprises: heater and temperature control loop;
Heater is for heating to the combustion gas of combustion machine, and the power supply line of heater is provided with contactor;
Temperature control loop is for the action of control contactor; Temperature control loop comprises first branch road and second branch road in parallel with controlling power supply;
The first branch road comprises the coil of the excitation contactor auxiliary contact, the first temperature detect switch (TDS) and the relay that are connected in series; Wherein, the conducting when the energized circuit of combustion machine drops into of excitation contactor auxiliary contact, the first temperature detect switch (TDS) is for carrying out break-make switching according to the temperature of combustion gas;
The second branch road comprises the normally opened contact of the relay being connected in series and the coil of contactor;
Contactor is according to the work of the state control heater of excitation contactor auxiliary contact and the first temperature detect switch (TDS).
Further, temperature control loop also comprises the indicating circuit being connected in parallel on control power supply, and indicating circuit is used to indicate the working state of heater.
Further, indicating circuit comprises: be connected in parallel on the first indication branch road and the second indication branch road controlled on power supply;
The first indication branch road comprises: the first tutorial light, and the normally opened contact of the first tutorial light series contactor, for lighting when heater heats;
The second indication branch road comprises: the second tutorial light, the normally-closed contact of the second tutorial light series contactor, for lighting when heater stops heating.
Further, the first temperature detect switch (TDS) is return difference temperature detect switch (TDS), and the temperature controlling range of return difference temperature detect switch (TDS) is 60-90 ℃.
Further, be also in series with the second temperature detect switch (TDS) on the first branch road, the second temperature detect switch (TDS) is for carrying out break-make switching according to the surface temperature of heater.
Further, the first branch road is provided with mode selector switch, and the switch terminal of mode selector switch is connected with manual control branch road, manually controls branch road for the work of manual control heater.
Further, the power supply in the power supply line of the total heater of control power supply.
The utlity model has following beneficial effect:
The utility model gas heating is thrown and is moved back control gear; by setting, comprise that the temperature control loop of excitation contactor auxiliary contact and the first temperature detect switch (TDS) controls the action of the contactor in the power supply line that is located at heater; realize rear automatically the input after gas heating and combustion machine are shut down of combustion machine start and automatically exited gas heating; thereby both guaranteed to enter the timely heating of the combustion gas of combustion machine; to improve combustion gas quality; improve the working life of combustion machine; avoid again the mistake cause thermal damage of heater, saved maintenance cost.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is that the utility model preferred embodiment gas heating is thrown the electrical block diagram that moves back control gear.
Description of reference numerals:
10, heater; 20, temperature control loop; 30, excitation contactor auxiliary contact; T1, the first temperature detect switch (TDS); T2, the second temperature detect switch (TDS); D1, the first tutorial light; D2, the second tutorial light; KM, contactor; K, relay; 21, the first branch road; 23, the second branch road; S, mode selector switch.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
With reference to Fig. 1, preferred embodiment of the present utility model provides a kind of gas heating to throw and has moved back control gear, and this control gear comprises: heater 10 and temperature control loop 20.Wherein, heater 10 is powered by three phase mains, and for heating to the combustion gas of combustion machine, the power supply line of heater 10 is provided with contactor KM; Temperature control loop 20 is for the action of control contactor KM.In the present embodiment, temperature control loop 20 comprises first branch road 21 and second branch road 23 in parallel with controlling power supply; The first branch road 21 comprises the coil of the excitation contactor auxiliary contact 30, the first temperature detect switch (TDS) T1 and the relay K that are connected in series; Wherein, excitation contactor auxiliary contact 30 conducting when the energized circuit of combustion machine drops into, the first temperature detect switch (TDS) T1 is for carrying out break-make switching according to the temperature of combustion gas; The second branch road 23 comprises the normally opened contact of the relay K being connected in series and the coil of contactor KM; Contactor KM is according to the work of the state control heater 10 of excitation contactor auxiliary contact 30 and the first temperature detect switch (TDS) T1.In the present embodiment, excitation contactor auxiliary contact 30 are normally opened contact, the first temperature control switch T1 is normally-closed contact, after the start of combustion machine, the energized circuit of combustion machine comes into operation, 30 conductings of excitation contactor auxiliary contact, the first temperature detect switch (TDS) T1 conducting, make the coil of relay K obtain electric, then the coil of the contactor KM on the second branch road 23 obtains electric, make power supply line's conducting of heater 10, combustion gas is heated, when the first temperature detect switch (TDS) T1 disconnects when the temperature of combustion gas surpasses setting threshold, the first branch road 21 disconnects, make the coil losing electricity of contactor KM, thereby cut off the power supply of heater 10, stop the heating to combustion gas, avoid the mistake cause thermal damage of heater 10, and after combustion machine is shut down, excitation contactor auxiliary contact 30 disconnect, make heater 10 stop heating, realize after combustion machine is shut down and automatically exit gas heating.
The present embodiment comprises that by setting the temperature control loop 20 of excitation contactor auxiliary contact 30 and the first temperature detect switch (TDS) T1 controls the action of the contactor in the power supply line that is located at heater; realize rear automatically the input after gas heating and combustion machine are shut down of combustion machine start and automatically exited gas heating; thereby both guaranteed to enter the timely heating of the combustion gas of combustion machine; to improve combustion gas quality; improve the working life of combustion machine; avoid again the mistake cause thermal damage of heater, saved maintenance cost.
Preferably, in the present embodiment, the control power supply of temperature control loop 20 is provided by the power supply line of heater 10, and in the present embodiment, the power supply of temperature control loop 20 draws A phase, B phase or C in the three phase supply power supply of the heater 10 arbitrary phase in mutually, and shares zero phase N.
Preferably, temperature control loop 20 also comprises the indicating circuit being connected in parallel on control power supply, and indicating circuit is used to indicate the working state of heater 10.In the present embodiment, indicating circuit comprises: be connected in parallel on the first indication branch road and the second indication branch road controlled on power supply; Wherein, the first indication branch road comprises: the first tutorial light D1, and the normally opened contact of the first tutorial light D1 series contactor KM, for lighting when heater 10 heats; The second indication branch road comprises: the second tutorial light D2, the normally-closed contact of the second tutorial light D2 series contactor KM, for lighting when heater 10 stops heating.
Preferably, in the present embodiment, the first temperature detect switch (TDS) T1 is return difference temperature detect switch (TDS), the temperature controlling range of return difference temperature detect switch (TDS) is 60-90 ℃, when the temperature that combustion gas detected is when more than 90 ℃, the first temperature detect switch (TDS) T1 disconnects, when the temperature that combustion gas detected is during lower than 60 ℃, and the first temperature detect switch (TDS) T1 conducting.
Preferably, be also in series with the second temperature detect switch (TDS) T2 on the first branch road 21, the second temperature detect switch (TDS) T2 is for carrying out break-make switching according to the surface temperature of heater 10, to strengthen the protection to heater 10.
Preferably, for the convenient manually control to heater 10, in the present embodiment, the first branch road 21 is provided with mode selector switch S, and the switch terminal of mode selector switch S is connected with manual control branch road, manually controls branch road for the work of manual control heater 10.In the present embodiment, manually control diverter switch SA1 and the SA2 that branch road comprises series connection, SA2 is connected with the manual control contact of mode selector switch S, SA1 is connected between the excitation contactor auxiliary contact 30 and the coil of relay K on the first branch road 21, wherein, the two ends of SA1 are the normally opened contact of relay K in parallel also, when mode selector switch S switches to manual control contact, pressing the coil that SA1 makes relay K obtains electric, and unclamp after SA1 due to the normally opened contact conducting in parallel with SA1, make manually to control branch road and keep energising, thereby realize the manual heating of heater 10.Preferably, the power supply line of heater 10 is provided with circuit breaker Q F, and the power supply line that controls power supply is provided with circuit breaker Q F1.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.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 (7)
1. gas heating is thrown and is moved back a control gear, it is characterized in that, comprising: heater (10) and temperature control loop (20);
Described heater (10) is for heating to the combustion gas of combustion machine, and the power supply line of described heater (10) is provided with contactor (KM);
Described temperature control loop (20) is for controlling the action of described contactor (KM); Described temperature control loop (20) comprises first branch road (21) and second branch road (23) in parallel with controlling power supply;
Described the first branch road (21) comprises the coil of the excitation contactor auxiliary contact (30), the first temperature detect switch (TDS) (T1) and the relay (K) that are connected in series; Wherein, described excitation contactor auxiliary contact (30) conducting when the energized circuit of described combustion machine drops into, described the first temperature detect switch (TDS) (T1) is for carrying out break-make switching according to the temperature of described combustion gas;
Described the second branch road (23) comprises the normally opened contact of the described relay (K) being connected in series and the coil of described contactor (KM);
Described contactor (KM) is controlled the work of described heater (10) according to the state of described excitation contactor auxiliary contact (30) and described the first temperature detect switch (TDS) (T1).
2. gas heating according to claim 1 is thrown and is moved back control gear, it is characterized in that,
Described temperature control loop (20) also comprises the indicating circuit being connected in parallel on described control power supply, and described indicating circuit is used to indicate the working state of described heater (10).
3. gas heating according to claim 2 is thrown and is moved back control gear, it is characterized in that,
Described indicating circuit comprises: be connected in parallel on the indication branch road of first on described control power supply and the second indication branch road;
Described the first indication branch road comprises: the first tutorial light (D1), and the connect normally opened contact of described contactor (KM) of described the first tutorial light (D1), for lighting when described heater (10) heats;
Described the second indication branch road comprises: the second tutorial light (D2), the connect normally-closed contact of described contactor (KM) of described the second tutorial light (D2), for lighting when described heater (10) stops heating.
4. gas heating according to claim 1 is thrown and is moved back control gear, it is characterized in that,
Described the first temperature detect switch (TDS) (T1) is return difference temperature detect switch (TDS), and the temperature controlling range of described return difference temperature detect switch (TDS) is 60-90 ℃.
5. gas heating according to claim 1 is thrown and is moved back control gear, it is characterized in that,
On described the first branch road (21), be also in series with the second temperature detect switch (TDS) (T2), described the second temperature detect switch (TDS) (T2) is for carrying out break-make switching according to the surface temperature of described heater (10).
6. gas heating according to claim 1 is thrown and is moved back control gear, it is characterized in that,
Described the first branch road (21) is provided with mode selector switch (S), and the switch terminal of described mode selector switch (S) is connected with manual control branch road, and described manual control branch road is for manually controlling the work of described heater (10).
7. gas heating according to claim 1 is thrown and is moved back control gear, it is characterized in that,
Power supply in the power supply line of the total described heater (10) of described control power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420252599.3U CN203856610U (en) | 2014-05-16 | 2014-05-16 | Gas heating entering-retreating control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420252599.3U CN203856610U (en) | 2014-05-16 | 2014-05-16 | Gas heating entering-retreating control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856610U true CN203856610U (en) | 2014-10-01 |
Family
ID=51606466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420252599.3U Expired - Fee Related CN203856610U (en) | 2014-05-16 | 2014-05-16 | Gas heating entering-retreating control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856610U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638778A (en) * | 2018-12-28 | 2019-04-16 | 国家电网有限公司 | A kind of transformer protection circuit |
| CN112094143A (en) * | 2019-05-28 | 2020-12-18 | 长春市农业机械研究院 | Fermentation process of high-efficiency low-energy-consumption livestock and poultry manure organic fertilizer conversion equipment |
-
2014
- 2014-05-16 CN CN201420252599.3U patent/CN203856610U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638778A (en) * | 2018-12-28 | 2019-04-16 | 国家电网有限公司 | A kind of transformer protection circuit |
| CN109638778B (en) * | 2018-12-28 | 2020-06-09 | 国家电网有限公司 | Transformer protection circuit |
| CN112094143A (en) * | 2019-05-28 | 2020-12-18 | 长春市农业机械研究院 | Fermentation process of high-efficiency low-energy-consumption livestock and poultry manure organic fertilizer conversion equipment |
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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: 20141001 Termination date: 20180516 |