CN219999043U - Portable small-sized generator parallel operation device - Google Patents
Portable small-sized generator parallel operation device Download PDFInfo
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- CN219999043U CN219999043U CN202320812592.1U CN202320812592U CN219999043U CN 219999043 U CN219999043 U CN 219999043U CN 202320812592 U CN202320812592 U CN 202320812592U CN 219999043 U CN219999043 U CN 219999043U
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- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model relates to a portable small-sized generator parallel operation device which comprises a parallel operation control circuit, wherein the parallel operation control circuit comprises a contactor, a relay, a parallel operation switch and a stop parallel operation switch, the contactor comprises a contactor coil and a contactor normally open contact, the relay comprises a relay coil and a relay normally closed contact, one end of the stop parallel operation switch is connected with one end of the contactor normally open contact, one end of the parallel operation switch is connected with one end of the relay normally closed contact, one end of the contactor coil is connected with the other end of the contactor normally open contact and the other end of the relay normally closed contact, the other end of the contactor coil is connected with a zero line, the other end of the parallel operation switch and the other end of the stop parallel operation switch are connected with an L3 phase line, and the relay coil is connected with the L1 phase line, the L3 phase line and the zero line. The device can rapidly run the small generators with different models and brands in parallel, greatly reduces the input preparation time of the emergency power supply of the generator, and improves the power supply capacity of the emergency power supply.
Description
Technical Field
The utility model relates to the technical field of generators, in particular to a portable small-sized generator parallel operation device.
Background
The small-sized generator has small volume, light weight and convenient transportation, is widely applied to various occasions as an emergency power supply, and particularly has the advantage of portability in areas where large-sized generators cannot reach. But the small-sized generator has low capacity and cannot meet the working requirements of some high-power emergency equipment (such as a water pump, a fan and the like).
To meet some field actual load demands, multiple small generators need to be combined to achieve an expanded capacity. But the current market lacks the matching products of portable small-sized generators for parallel operation, when the parallel operation is required on site, the process is complicated, the required time is long, and emergency disposal is often not facilitated under emergency conditions.
Disclosure of Invention
In order to overcome the technical defects, the utility model provides a portable small-sized generator parallel operation device, which improves the power supply capacity of an emergency power supply.
In order to solve the problems, the utility model is realized according to the following technical scheme:
the utility model provides a portable small-sized generator parallel operation device which comprises a parallel operation control circuit, wherein the parallel operation control circuit comprises a contactor, a relay, a parallel operation switch and a parallel operation stopping switch, one end of the parallel operation stopping switch is connected with one end of a normally open contact of the contactor, one end of the parallel operation stopping switch is connected with one end of a normally closed contact of the relay, one end of a contactor coil is connected with the other end of the normally open contact of the contactor and the other end of the normally closed contact of the relay, the other end of the contactor coil is connected with a zero line, the other end of the parallel operation stopping switch and the other end of the parallel operation stopping switch are connected with an L3 phase line, and the relay coil is connected with an L1 phase line, an L3 phase line and the zero line.
As an improvement of the scheme, the parallel operation control circuit further comprises a control loop switch, and the control loop switch is connected in series with the L3 phase line and the zero line.
As an improvement of the scheme, the parallel operation control circuit further comprises a parallel operation indicating lamp, one end of the parallel operation indicating lamp is connected with the normally open contact of the contactor and the contact of the coil of the contactor, and the other end of the parallel operation indicating lamp is connected with a zero line.
As an improvement of the scheme, the three-phase measuring instrument set further comprises a measuring instrument set, wherein the three phases of the measuring instrument set are correspondingly connected with the L1 phase line, the L2 phase line and the L3 phase line.
As an improvement of the scheme, the measuring instrument group comprises a first multifunctional ammeter and a second multifunctional ammeter, wherein the first multifunctional ammeter is connected with the output end of the first generator, and the second multifunctional ammeter is connected with the output end of the second generator.
As an improvement of the scheme, the parallel operation control system further comprises an output main switch, wherein two ends of the output main switch are respectively connected with the output end of the parallel operation control loop and the user load.
As the improvement of above-mentioned scheme, still include the electric box, parallel operation control circuit locates in the electric box, measuring instrument group, parallel operation switch, stop parallel operation switch and parallel operation pilot lamp locate on the panel of electric box.
As an improvement of the scheme, the intelligent control system further comprises a guide rail, wherein the guide rail is arranged in the electric box, and the control loop switch, the contactor, the relay and the output main switch are arranged on the guide rail.
As an improvement of the scheme, the electric box further comprises a wire slot, wherein the wire slot is arranged in the electric box.
Compared with the prior art, the utility model has the following beneficial effects:
the device can quickly connect two small generators with different capacities, different models and different brands in parallel to run, provide stable and abundant electric energy for users, and can quickly connect the small generators with different models and brands in parallel to run under the condition of insufficient capacity of a single small engine, thereby greatly reducing the input preparation time of the emergency power supply of the generator and improving the power supply capacity of the emergency power supply.
Drawings
The utility model is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic diagram of a parallel operation control circuit according to an embodiment;
FIG. 2 is a schematic diagram of a parallel operation control circuit according to another embodiment;
FIG. 3 is a schematic diagram of another embodiment of a portable generator-parallel machine connection;
FIG. 4 is a schematic diagram of a panel structure of the electric box according to an embodiment;
fig. 5 is a block diagram of the portable generator parallel operation device according to an embodiment.
Reference numerals illustrate:
1. a parallel switch; 2. stopping the parallel operation switch; 3. a contactor coil; 4. normally open contacts of the contactor; 5. a relay coil; 6. normally closed contacts of the relay; 7. a control loop switch; 8. parallel operation indicator lamps; 9. a first multi-function electricity meter; 10. a second multi-function electricity meter; 11. and outputting a main switch.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Embodiments of the utility model are illustrated in the accompanying drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
It will be understood that the terms first, second, etc. as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first multi-function meter may be referred to as a second multi-function meter, and similarly, a second multi-function meter may be referred to as a first multi-function meter, without departing from the scope of the utility model. The first utility meter and the second utility meter are both utility meters, but are not the same utility meter.
It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.
In order to solve the problems of complex parallel operation and long time of the small-sized generators, the embodiment provides a portable parallel operation device for the small-sized generators, which can connect two small-sized generators in parallel quickly through the device. The input preparation time of the emergency power supply is reduced under the condition that the capacity of a single small engine is insufficient, and the power supply capacity of the emergency power supply is improved.
In one embodiment, as shown in fig. 1, a portable small-sized generator parallel operation device comprises a parallel operation control circuit, wherein the parallel operation control circuit comprises a contactor, a relay, a parallel operation switch 1 and a parallel operation stopping switch 2, the contactor comprises a contactor coil 3 and a contactor normally open contact, the relay comprises a relay coil 5 and a relay normally closed contact, one end of the parallel operation stopping switch 2 is connected with one end of the contactor normally open contact, one end of the parallel operation switch 1 is connected with one end of the relay normally closed contact, one end of the contactor coil 3 is connected with the other end of the contactor normally open contact and the other end of the relay normally closed contact, the other end of the contactor coil 3 is connected with a zero line, the other end of the parallel operation stopping switch 2 is connected with an L3 phase line, and the relay coil 5 is connected with the L1 phase line, the L3 phase line and the zero line.
In one embodiment, the parallel operation control circuit further comprises a control loop switch 7, and the control loop switch 7 is a linkage switch connected on the L3 phase line and the zero line in series, and can connect or disconnect the L3 line and the N line.
In one embodiment, as shown in fig. 2, the parallel operation control circuit further comprises a parallel operation indicator lamp 8, one end of the parallel operation indicator lamp 8 is connected with the contact point of the normally open contact 4 of the contactor and the contactor coil 3, and the other end of the parallel operation indicator lamp 8 is connected with a zero line.
In one embodiment, as shown in fig. 3, the system further comprises a measuring instrument set, and the three phases of the measuring instrument set are correspondingly connected with the L1 phase line, the L2 phase line and the L3 phase line.
Further, the measuring instrument set includes a first multifunctional electric meter 9 and a second multifunctional electric meter 10, the first multifunctional electric meter 9 is connected with the input end of the first generator, the second multifunctional electric meter 10 is connected with the input end of the second generator, the two generators are respectively connected with the parallel operation control circuit, the output voltage and frequency of the first generator are measured by the first multifunctional electric meter 9, the output voltage and frequency of the second generator are measured by the second multifunctional electric meter 10, and the output voltage and frequency of the two generators are regulated according to the output voltage and frequency measured by the first multifunctional electric meter 9 and the second multifunctional electric meter 10, so that the output voltage and frequency of the two generators are basically consistent.
In one embodiment, the parallel operation control circuit further comprises an output main switch 11, wherein two ends of the output main switch 11 are respectively connected with the output end of the parallel operation control circuit and a user load, and are used for controlling the output of the parallel operation control circuit.
In one embodiment, as shown in fig. 4, the parallel operation control circuit further comprises an electric box, the parallel operation control circuit is arranged in the electric box, the measuring instrument group (the first multifunctional electric meter 9 and the second multifunctional electric meter 10), the parallel operation switch 1, the stop parallel operation switch 2 and the parallel operation indicating lamp 8 are arranged on a panel of the electric box, the parallel operation control circuit is connected with the secondary circuit connecting wire according to a wiring diagram through a primary circuit connecting wire, further, as shown in fig. 5, a terminal row and a current transformer are arranged in the electric box, and the parallel operation control circuit is connected with an external generator through the terminal row, so that wiring and maintenance in the electric box are more convenient.
Furthermore, a guide rail is also arranged in the electric box, the guide rail is arranged in the electric box, the control loop switch 7, the contactor, the relay, the output main switch 11 and other element parts are all arranged on the guide rail, and the guide rail is used for fixing all components in the electric box.
In one embodiment, a wire slot is further arranged in the electric box, and the primary loop connecting wire and the secondary loop connecting wire of the connecting circuit are arranged in the corresponding wire slots, so that the wires can be protected, and the wires can be prevented from being leaked and hurting people.
Specifically, the parallel operation process steps of the portable small-sized generator parallel operation device are as follows:
a. respectively connecting the two generator output lines to the input terminal of the parallel operation device terminal block generator according to a wiring diagram (ensuring that the output phase sequences of the connected two generators are consistent), and closing a control loop switch 7;
b. starting the generators and closing the output switches of the generator bodies, and then respectively regulating the output voltages and the frequencies of the two generators to be consistent through the measurement of the multifunctional ammeter, wherein the voltage error is controlled within 1%, and the frequency error is controlled within 1%;
c. when the voltage between the same phases of the two generators is lower than 20V, the overvoltage and undervoltage relay is released, the normally closed contact is closed, the coil 3 of the automatic parallel operation contactor is powered on, the auxiliary contact of the automatic parallel operation contactor is closed and self-locked, and meanwhile, the main contact of the automatic parallel operation contactor is closed to finish generator parallel operation, and at the moment, the parallel operation indicator lamp 8 is lighted;
d. a parallel operation switch 1 of the parallel operation device is disconnected;
e. connecting the electric load to the output terminal of the terminal block;
f. closing the output main switch 11;
g. the load condition of the generator can be checked on the multifunctional ammeter.
The utility model relates to a stopping parallel operation process of a portable small-sized generator parallel operation device, which comprises the following steps:
a. the output main switch 11 of the parallel operation device is disconnected;
b. the parallel operation stop switch 2 is disconnected, the coil 3 of the automatic parallel operation contactor is powered off, and the main contact of the automatic parallel operation contactor is disconnected and then the parallel operation state is released.
The device can quickly connect two small generators with different capacities, different models and different brands in parallel to run, provide stable and abundant electric energy for users, and can quickly connect the small generators with different models and brands in parallel to run under the condition of insufficient capacity of a single small engine, thereby greatly reducing the input preparation time of the emergency power supply of the generator and improving the power supply capacity of the emergency power supply.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (7)
1. The utility model provides a portable small-size generator parallel operation device, its characterized in that, includes parallel operation control circuit, parallel operation control circuit includes contactor, relay, parallel operation switch and stops parallel operation switch, stop parallel operation switch one end connect contactor normally open contact's one end, parallel operation switch one end connect relay normally closed contact's one end, contactor coil one end is connected with contactor normally open contact's the other end, relay normally closed contact's the other end, contactor coil other end and zero line connection, parallel operation switch's the other end, stop parallel operation switch's the other end all is connected with L3 phase line, relay coil is connected with L1 phase line, L3 phase line and zero line.
2. The portable miniature generator parallel operation device according to claim 1, wherein said parallel operation control circuit further comprises a control loop switch connected in series with the L3 phase and zero lines.
3. The portable miniature generator parallel operation device according to claim 1, wherein the parallel operation control circuit further comprises a parallel operation indicator lamp, one end of the parallel operation indicator lamp is connected with a normally open contact of a contactor and a contact point of a contactor coil, and the other end of the parallel operation indicator lamp is connected with a zero line.
4. A portable generator parallel operation device according to any of claims 1 to 3, further comprising a measuring instrument set, the three phases of the measuring instrument set being correspondingly connected to the L1 phase line, the L2 phase line and the L3 phase line.
5. The portable generator parallel operation device according to claim 4, wherein the measuring instrument set comprises a first multifunctional electric meter and a second multifunctional electric meter, the first multifunctional electric meter is connected with the output end of the first generator, and the second multifunctional electric meter is connected with the output end of the second generator.
6. The portable miniature generator parallel operation device according to claim 5, further comprising an output main switch, wherein two ends of the output main switch are respectively connected with an output end of the parallel operation control loop and a user load.
7. The portable miniature generator parallel operation device according to claim 6, further comprising an electric box, wherein the parallel operation control circuit is arranged in the electric box, and the measuring instrument set, the parallel operation switch, the stop parallel operation switch and the parallel operation indicator lamp are arranged on a panel of the electric box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320812592.1U CN219999043U (en) | 2023-04-12 | 2023-04-12 | Portable small-sized generator parallel operation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320812592.1U CN219999043U (en) | 2023-04-12 | 2023-04-12 | Portable small-sized generator parallel operation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219999043U true CN219999043U (en) | 2023-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320812592.1U Active CN219999043U (en) | 2023-04-12 | 2023-04-12 | Portable small-sized generator parallel operation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219999043U (en) |
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2023
- 2023-04-12 CN CN202320812592.1U patent/CN219999043U/en active Active
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