CN216774368U - Power supply device of gas cogeneration control system - Google Patents
Power supply device of gas cogeneration control system Download PDFInfo
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- CN216774368U CN216774368U CN202123299024.6U CN202123299024U CN216774368U CN 216774368 U CN216774368 U CN 216774368U CN 202123299024 U CN202123299024 U CN 202123299024U CN 216774368 U CN216774368 U CN 216774368U
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- 238000010248 power generation Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 8
- 239000007858 starting material Substances 0.000 description 7
- 238000003860 storage Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model relates to a power supply device of a gas cogeneration control system, belonging to the technical field of electronic circuits and comprising a switch power supply, wherein the input side of the switch power supply is connected with a commercial power end, and the output side of the switch power supply is used for being connected with the cogeneration control system so as to supply power to the cogeneration control system; the power supply controller is connected with the output side of the switching power supply, the power supply controller is connected with the output end of the standby power supply, the power supply controller is used for detecting the voltage of the output side of the switching power supply and the output voltage of the standby power supply so as to control the standby power supply to cut off or switch on the power supply of the cogeneration control system, and the switching power supply charges the standby power supply through the power supply controller. The utility model has the effect of improving the stability of the power supply of the cogeneration control system.
Description
Technical Field
The utility model relates to the technical field of electronic circuits, in particular to a power supply device of a gas cogeneration control system.
Background
The cogeneration system utilizes the heat engine to simultaneously generate electricity and useful heat, the cogeneration system uses the generated waste heat for industrial manufacture or utilizes the waste heat of the industrial manufacture to generate electricity so as to achieve the purpose of maximizing the utilization of energy.
The generator in the cogeneration system needs external force support of a starter when being started, and in order to control the starting of the generator, the cogeneration system is usually provided with a cogeneration control system, the cogeneration control system is electrified and operated, the cogeneration control system controls the starting of the starter, and then the starter starts the generator.
At present, two power supply modes of a cogeneration control system exist, wherein the first mode is that a power supply is shared with a generator starting power supply; and the second type is that the power supply is connected with a switching power supply through commercial power, and the commercial power provides stable power for the cogeneration control system.
In view of the above-mentioned related arts, the inventor believes that if the form of common use with the engine starting power supply is adopted, the voltage of the power supply at the load end is reduced in the starting process of the generator, so that the cogeneration control system cannot work normally; if the mains supply is adopted for supplying power, although the voltage is relatively stable, in the normal operation of the unit, the mains supply can be suddenly cut off, so that the unit is emergently stopped, a gas electromagnetic valve, a three-way valve and the like of the cogeneration control system can be caused to be not completely closed, and potential safety hazards are formed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power supply device of a gas cogeneration control system, aiming at improving the stability of a power supply of the cogeneration control system.
The power supply device of the gas cogeneration control system adopts the following technical scheme:
a power supply device of a gas cogeneration control system comprises a switch power supply, wherein the input side of the switch power supply is connected with a commercial power end, and the output side of the switch power supply is used for being connected with the cogeneration control system so as to supply power to the cogeneration control system; the power supply controller is connected with the output side of the switching power supply and connected with the output end of the standby power supply, and the power supply controller is used for detecting the voltage of the output side of the switching power supply and the output voltage of the standby power supply so as to control the standby power supply to cut off or switch on the power supply of the cogeneration control system.
By adopting the technical scheme, when the mains supply end supplies power normally, the switching power supply can provide a relatively stable power supply for the cogeneration control system; when the commercial power end is disconnected and the power supply controller detects that no voltage signal exists at the output side of the switching power supply, the power supply controller controls the standby power supply to supply power to the cogeneration control system, so that the normal operation of the cogeneration control system is not easily influenced; when the power supply controller detects that the output voltage of the standby power supply is too low, the power supply controller controls the standby power supply to cut off power supply, so that the situation that the voltage of the cogeneration control system is unstable in the operation process is avoided to a certain extent; when the commercial power end can not normally supply power, the standby power supply continuously provides stable voltage for the cogeneration control system, so that the stability of the power supply of the cogeneration control system is improved.
Optionally, the output side of the switching power supply is connected with a generator in the cogeneration system.
By adopting the technical scheme, the standby power supply supplies power for the cogeneration control system, after the cogeneration control system controls the starting of the starter and the starter controls the starting of the generator, the generator supplies power to the cogeneration control system, namely, the generator replaces a commercial power end to supply power to the cogeneration control system, and the cogeneration control system can continuously operate in an isolated island manner when the commercial power is cut off.
Optionally, the model of the switching power supply is an NDR-480-24 switching power supply.
By adopting the technical scheme, the NDR-480-24 type switching power supply is adopted, so that the alternating current voltage at the commercial power end can be converted into the direct current voltage with a proper amplitude value conveniently, and the normal operation of the cogeneration control system is realized.
Optionally, the power controller is a DR-UPS40 power controller.
By adopting the technical scheme, the DR-UPS40 type power supply controller is adopted to facilitate the detection of the output voltage of the standby power supply and the output voltage of the switching power supply so as to control the switching-off or switching-on of the standby power supply.
Optionally, the switching power supply further comprises a short-circuit protection circuit, and the short-circuit protection circuit is used for preventing a transient large current from flowing through the switching power supply.
By adopting the technical scheme, when a power supply device or a cogeneration control system has a short-circuit fault, the short-circuit protection circuit is utilized, so that the damage to a switch power supply and other components caused by instantaneous large current is avoided to a certain extent.
Optionally, the short-circuit protection circuit includes an air switch QF1, and the air switch QF1 is connected in series between the live line of the mains supply terminal and the input side of the switching power supply.
By adopting the technical scheme, when the current between the live wire of the commercial power end and the input side of the switching power supply exceeds the rated current of the air switch QF1, the air switch QF1 can be automatically disconnected, so that the effect of timely disconnecting the switching power supply and the commercial power end in the short circuit process is realized.
Optionally, the system further comprises an overcurrent protection circuit, wherein the overcurrent protection circuit is used for preventing a large current from flowing through the cogeneration control system.
By adopting the technical scheme, when the abnormal current of the cogeneration control system is increased, the overcurrent protection circuit is utilized to cut off the input current of the cogeneration control system, so that the cogeneration control system is prevented from being damaged by the large current to a certain extent.
Optionally, the overcurrent protection circuit includes a fuse FU, and the fuse FU is connected in series between the positive output end of the output side of the switching power supply and the cogeneration control system.
By adopting the technical scheme, when the current between the switching power supply and the cogeneration control system exceeds the specified value, the melt in the fuse FU is fused, so that the switching power supply and the cogeneration control system are disconnected, the cogeneration control system is timely cut off when the current is too large, and the effect of damaging the cogeneration control system is prevented.
Optionally, the controller further comprises a switch circuit, and the switch circuit is used for controlling the on and off of the cogeneration control system.
By adopting the technical scheme, the on-off control of the cogeneration control system is facilitated for the workers.
Optionally, the switch circuit includes a key switch SA connected in series between the positive output terminal of the output side of the switching power supply and the cogeneration control system.
Through adopting above-mentioned technical scheme, key switch SA establishes ties to between the anodal output of switching power supply output side and the combined heat and power generation control system, and the staff of being convenient for opens and close control to combined heat and power generation control system, utilizes key switch SA to avoid irrelevant personnel's maloperation to a certain extent.
In summary, the utility model includes at least one of the following beneficial technical effects:
when the commercial power end can not normally supply power, the voltage of the output side of the switching power supply is zero, the voltage controller detects that the voltage of the output side of the switching power supply is zero, the standby power supply is controlled to continuously supply power to the cogeneration control system, and the stability of the power supply is improved, so that the normal operation of the cogeneration control system is not easily influenced;
when the standby power supply supplies power to the combined heat and power generation control system, when the power supply controller detects that the voltage of the standby power supply is too low, the power supply controller controls the standby power supply to stop supplying power, so that the voltage is stable during the power supply period of the standby power supply.
Drawings
Fig. 1 is a schematic circuit diagram of an embodiment of the present application.
Fig. 2 is a schematic circuit connection structure diagram for showing a switching power supply, a standby power supply, a power supply controller and a cogeneration control system according to an embodiment of the present application.
Fig. 3 is a schematic circuit diagram of another embodiment of the present application.
Description of the reference numerals: 101. a switching power supply; 102. a power supply controller; 103. a standby power supply; 104. a cogeneration control system; 105. a short-circuit protection circuit; 106. an overcurrent protection circuit; 107. a switching circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to fig. 1-3 and the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The embodiment of the utility model discloses a power supply device of a gas cogeneration control system.
Example 1:
referring to fig. 1 and 2, a power supply device of a gas cogeneration control system comprises a switching power supply 101, wherein an input side of the switching power supply 101 is connected with a mains supply end, and an output side of the switching power supply 101 is used for being connected with a cogeneration control system 104 so as to supply power to the cogeneration control system 104; the power supply controller 102 is connected with the output side of the switching power supply 101, the power supply controller 102 is connected with the output end of the standby power supply 103, the power supply controller 102 is used for detecting the voltage of the output side of the switching power supply 101 and the output voltage of the standby power supply 103 so as to control the standby power supply 103 to cut off or switch on power supply to the cogeneration control system 104, and the switching power supply 101 charges the standby power supply 103 through the power supply controller 102.
In the above embodiment, when the commercial power end is supplying power normally, the switching power supply 101 may provide a relatively stable power supply to the cogeneration control system 104; when the mains supply end stops supplying power, the power supply controller 102 detects that no voltage signal exists at the output side of the switching power supply 101, the power supply controller 102 controls the standby power supply 103 to supply power to the cogeneration control system 104, and only a delay of a few milliseconds exists in the process of detecting that no voltage signal exists at the output side of the switching power supply 101 to supply power to the standby power supply 103, so that the normal operation of the cogeneration control system 104 is not easily influenced; when the power controller 102 detects that the output voltage of the standby power supply 103 is too low, the power controller 102 cuts off the power supply of the standby power supply 103 to the cogeneration control system 104, so that the cogeneration control system 104 is prevented from generating a voltage instability condition; when the commercial power end can not normally supply power, the standby power supply 103 continuously provides relatively stable voltage for the cogeneration control system 104, so that the stability of power supply of the cogeneration control system 104 is improved.
When the utility power supply end normally supplies power to the cogeneration control system 104 through the switching power supply 101, if the power supply controller 102 detects that the power supply voltage of the backup power supply 103 is low, the power supply controller 102 controls the switching power supply 101 to charge the backup power supply 103, so that the electric quantity of the backup power supply 103 is sufficient, and when the backup power supply 103 supplies power to the cogeneration control system 104, a stable output voltage can be provided.
Referring to fig. 1, as an embodiment of the backup power supply 103, the backup power supply 103 is a storage battery pack, the storage battery pack is electrically connected to the power supply controller 102, and the storage battery pack is formed by connecting a plurality of storage batteries in series, so that in actual use, a worker can adjust specifications and the number of the storage batteries correspondingly, so as to adjust an output voltage of the backup power supply 103 to a working voltage of the cogeneration control system 104.
Referring to fig. 1 and 2, as an embodiment of the switching power supply 101, the model of the switching power supply 101 is an NDR-480-24 switching power supply; the NDR-480-24 type switching power supply supports alternating current with an input voltage ranging from 90V to 264V, so that alternating current voltage at a commercial power end is converted into direct current voltage with a proper amplitude to normally operate the cogeneration control system 104.
Referring to fig. 1 and 2, as an embodiment of the power controller 102, the model of the power controller 102 is a DR-UPS40 type power controller, and the power controller 102 is further configured to detect a power voltage of the backup power supply 103; the DR-UPS40 type power supply controller is provided with a relay to control the on/off of the circuit, i.e., the standby power supply 103 in this embodiment.
In the above embodiment, when the power controller 102 detects that the voltage on the output side of the switching power supply 101 is zero, the relay of the power controller 102 is closed, so that the backup power supply 103 supplies power to the cogeneration control system 104 through the power controller 102; when the power supply controller 102 detects that the output voltage of the backup power supply 103 is too low, the relay of the power supply controller 102 is switched off, and the power supply of the backup power supply 103 to the cogeneration control system 104 is cut off, so that the fault caused by the voltage instability of the cogeneration control system 104 is avoided to a certain extent, and in the embodiment, when the output voltage of the backup power supply 103 is lower than 22V, the backup power supply 103 stops supplying power; when the power supply controller 102 detects that the output side voltage of the switching power supply 101 is greater than the power supply voltage of the backup power supply 103, the power supply controller 102 controls the switching power supply 101 to charge the backup power supply 103 so that the backup power supply 103 has sufficient capacity for subsequently supplying power to the cogeneration control system 104 using the backup power supply 103.
Referring to fig. 1, in order to prevent a transient large current from flowing through the switching power supply 101, the power supply device further includes a short-circuit protection circuit 105, and when a short-circuit fault occurs in the power supply device, the short-circuit protection circuit 105 is used to prevent the transient large current from damaging the switching power supply 101 and other components to some extent.
Referring to fig. 1, as an embodiment of the short-circuit protection circuit 105, the short-circuit protection circuit 105 includes an air switch QF1, and the air switch QF1 is connected in series between a power line of a commercial power terminal and an input side of the switching power supply 101. When the current between the live wire of the commercial power end and the input side of the switching power supply 101 exceeds the rated current of the air switch QF1, the air switch QF1 is automatically switched off, so that the switching power supply 101 is timely switched off from the commercial power end in the case of short circuit.
It should be noted that when the short-circuit fault occurs, the air switch QF1 is turned off, and the utility end is disconnected from the switching power supply 101, and the utility end stops supplying power to the switching power supply 101, that is, the voltage at the output side of the switching power supply 101 is zero, at this time, the power controller 102 detects that the voltage at the output side of the switching power supply 101 is zero, and controls the backup power supply 103 to continue supplying power to the cogeneration control system 104, that is, when the air switch QF1 is turned off due to a fault, the cogeneration control system 104 is supplied with power by the backup power supply 103, and normal operation of the cogeneration control system 104 is not easily affected.
Referring to fig. 1, in order to prevent a large current from flowing through the cogeneration control system 104, the power supply apparatus further includes an overcurrent protection circuit 106, and when an abnormal current increase occurs in the cogeneration control system 104, the overcurrent protection circuit 106 is used to cut off the input current of the cogeneration control system 104, thereby preventing the large current from damaging the cogeneration control system 104 to some extent.
Referring to fig. 1, as an embodiment of the overcurrent protection circuit 106, the overcurrent protection circuit 106 includes a fuse FU which is connected in series between a positive output terminal on the output side of the switching power supply 101 and the cogeneration control system 104.
In the above embodiment, when the current between the switching power supply 101 and the cogeneration control system 104 exceeds the specified value of the fuse FU, the fuse FU itself generates heat to fuse the melt in the fuse FU, thereby disconnecting the switching power supply 101 from the cogeneration control system 104, and the specified value of the fuse FU can select fuses of different specifications according to actual conditions and historical experience, thereby realizing timely cutting off the cogeneration control system 104 when the current is too large, and preventing the cogeneration control system 104 from being damaged.
Referring to fig. 1, in order to facilitate the control of the on/off of the cogeneration control system 104 by the staff, the power supply device further includes a switching circuit 107; as an embodiment of the switch circuit 107, the switch circuit 107 includes a key switch SA connected in series between a positive output terminal on the output side of the switching power supply 101 and the cogeneration control system 104.
In the above embodiment, the key switch SA opens or closes the circuit by using the key, so that the start and stop of the cogeneration control system 104 by the worker can be controlled conveniently, and the misoperation of an irrelevant person can be avoided to a certain extent.
The implementation principle of the embodiment 1 is as follows: when the commercial power end can not normally supply power, the voltage of the output side of the switching power supply 101 is zero, the voltage controller detects that the voltage of the output side of the switching power supply 101 is zero, the standby power supply 103 is controlled to continue supplying power to the cogeneration control system 104, and if the voltage controller detects that the output voltage of the standby power supply 103 is low, the power controller 102 controls the standby power supply 103 to stop supplying power, so that the stability of the power supply is improved, and the normal operation of the cogeneration control system 104 is not easily influenced.
Example 2:
referring to fig. 3, the present embodiment is different from embodiment 1 in that the output side of the switching power supply 101 is connected to both the generator in the cogeneration system and the utility power terminal.
Referring to fig. 3, a first breaker QF2 is connected in series between the generator and the output side of the switching power supply 101, and a second breaker QF3 is connected in series between the utility side and the output side of the switching power supply 101; the first circuit breaker QF2 and the second circuit breaker QF3 are used for controlling the synchronous operation of the generator when the generator and the mains supply are supplied with power simultaneously.
The implementation principle of the embodiment 2 is as follows: after the commercial power end stops supplying power, the standby power supply 103 supplies power to the cogeneration control system 104, after the cogeneration control system 104 controls the starter to start and the starter controls the generator to start, the first circuit breaker is switched on, the generator supplies power to the cogeneration control system 104, namely, the generator replaces the commercial power end to supply power to the cogeneration control system 104, so that the cogeneration control system 104 can normally operate, the cogeneration control system 104 can continuously operate in an isolated island manner, and the effect that the cogeneration control system 104 normally operates when the commercial power is cut off is realized.
The foregoing is a preferred embodiment of the present invention and is not intended to limit the scope of the utility model in any way, and any feature disclosed in this specification (including the abstract and drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Claims (10)
1. The power supply device of the gas cogeneration control system comprises a switching power supply (101), wherein the input side of the switching power supply (101) is connected with a commercial power end, and the output side of the switching power supply (101) is used for being connected with a cogeneration control system (104) so as to supply power to the cogeneration control system (104); the method is characterized in that: the power supply control system further comprises a power supply controller (102) and a standby power supply (103), wherein the power supply controller (102) is connected with the output side of the switching power supply (101), the power supply controller (102) is connected with the output end of the standby power supply (103), and the power supply controller (102) is used for detecting the voltage of the output side of the switching power supply (101) and the output voltage of the standby power supply (103) so as to control the standby power supply (103) to cut off or switch on the power supply of the cogeneration control system (104).
2. A power supply apparatus of a gas cogeneration control system of claim 1, wherein: the output side of the switching power supply (101) is connected to a generator in a cogeneration system.
3. A power supply apparatus of a gas cogeneration control system of claim 1, wherein: the model of the switching power supply (101) adopts an NDR-480-24 switching power supply.
4. A power supply apparatus of a gas cogeneration control system of claim 1, wherein: the model of the power supply controller (102) adopts a DR-UPS40 type power supply controller.
5. A power supply apparatus of a gas co-generation control system according to claim 1, characterized in that: the short-circuit protection circuit (105) is further included, and the short-circuit protection circuit (105) is used for preventing instantaneous large current from flowing through the switching power supply (101).
6. A power supply apparatus of a gas cogeneration control system of claim 5, wherein: the short-circuit protection circuit (105) comprises an air switch QF1, and the air switch QF1 is connected in series between a live wire of a mains terminal and the input side of the switching power supply (101).
7. A power supply apparatus of a gas cogeneration control system of claim 1, wherein: and an overcurrent protection circuit (106), wherein the overcurrent protection circuit (106) is used for preventing large current from flowing through the combined heat and power generation control system (104).
8. A power supply apparatus of a gas cogeneration control system of claim 7, wherein: the overcurrent protection circuit (106) comprises a fuse FU, and the fuse FU is connected between the positive output end of the output side of the switching power supply (101) and the cogeneration control system (104) in series.
9. A power supply apparatus of a gas cogeneration control system of claim 1, wherein: the control system further comprises a switch circuit (107), wherein the switch circuit (107) is used for controlling the on and off of the combined heat and power generation control system (104).
10. A power supply apparatus of a gas cogeneration control system of claim 9, wherein: the switch circuit (107) includes a key switch SA connected in series between a positive output terminal on an output side of the switching power supply (101) and the cogeneration control system (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123299024.6U CN216774368U (en) | 2021-12-24 | 2021-12-24 | Power supply device of gas cogeneration control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123299024.6U CN216774368U (en) | 2021-12-24 | 2021-12-24 | Power supply device of gas cogeneration control system |
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| Publication Number | Publication Date |
|---|---|
| CN216774368U true CN216774368U (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123299024.6U Expired - Fee Related CN216774368U (en) | 2021-12-24 | 2021-12-24 | Power supply device of gas cogeneration control system |
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| Country | Link |
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| CN (1) | CN216774368U (en) |
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2021
- 2021-12-24 CN CN202123299024.6U patent/CN216774368U/en not_active Expired - Fee Related
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