CN211397849U - Novel power plant alternating-current variable-frequency accident oil pump power supply device - Google Patents
Novel power plant alternating-current variable-frequency accident oil pump power supply device Download PDFInfo
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- CN211397849U CN211397849U CN201922388696.0U CN201922388696U CN211397849U CN 211397849 U CN211397849 U CN 211397849U CN 201922388696 U CN201922388696 U CN 201922388696U CN 211397849 U CN211397849 U CN 211397849U
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Abstract
The utility model discloses a novel power plant AC variable frequency accident oil pump power supply device, which relates to the technical field of accident oil pump power supply control, and comprises an AC input end, a DC input end, a frequency converter, an isolation step-up transformer, a diode and an AC oil pump, wherein the frequency converter comprises an AC input pin, a DC input pin and an AC output pin; the utility model discloses an alternating current oil pump, usable accident direct current oil pump can cancel, improve the oil pump rate of utilization and reduce cost.
Description
Technical Field
The utility model relates to an accident oil pump power supply control technical field specifically is a novel power plant exchanges variable frequency accident oil pump power supply device.
Background
In industrial fields such as power plants, chemical engineering and the like, a direct oil pump powered by a direct current screen is mostly adopted as an emergency oil pump; when the battery is started, the current impact is large, so that the voltage of the storage battery pack is fluctuated too much instantly, and power supply faults of other equipment are caused; and a direct-flow oil pump needs to be separately configured.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a novel power plant exchanges variable frequency accident oil pump power supply device.
The utility model aims at realizing through the following technical scheme: the utility model provides a novel power plant exchanges variable frequency accident oil pump power supply device, includes alternating current input 5, direct current input 6, converter 1, keeps apart step-up transformer 2, diode 3, alternating current oil pump 4, converter 1 includes alternating current input pin 101, direct current input pin 102, alternating current output pin 103, alternating current input 5 with alternating current input pin 101 is connected, direct current input 6 with the positive pole of diode 3 is connected, the negative pole of diode 3 with direct current input pin 102 is connected, alternating current output pin 103 with keep apart the primary side of step-up transformer 2 and connect, keep apart step-up transformer 2 the vice limit with alternating current oil pump 4 connects.
In a preferred embodiment, the frequency converter 1 is of the type ZX30-30 KW.
In a preferred embodiment, the input voltage of the alternating current input 5 is AC 380V.
In a preferred embodiment, the input voltage at the DC input 6 is DC 220V.
In a preferred embodiment, the AC output pin 103 outputs a voltage of AC 120V.
In a preferred embodiment, the lowest operating bus voltage of the frequency converter 1 is 180V.
The utility model has the advantages that:
the utility model adopts the frequency conversion starting to completely solve the starting impact; the utility model discloses an alternating current oil pump, usable accident direct current oil pump can cancel, improve the oil pump rate of utilization and reduce cost.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a circuit structure diagram of a novel power plant ac variable frequency accident oil pump power supply device according to an embodiment of the present invention.
In the figure:
1. a frequency converter; 101. an alternating current input pin; 102. a direct current input pin; 103. an alternating current output pin; 2. an isolation step-up transformer; 3. a diode; 4. an alternating-current oil pump; 5. an alternating current input end; 6. a direct current input terminal.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The invention will be further described with reference to the drawings and specific examples.
As shown in fig. 1, the utility model provides a novel power plant exchanges variable frequency accident oil pump power supply device, including alternating current input 5, direct current input 6, converter 1, keep apart step up transformer 2, diode 3, alternating current oil pump 4, converter 1 includes alternating current input pin 101, direct current input pin 102, alternating current output pin 103, alternating current input 5 is connected with alternating current input pin 101, direct current input 6 is connected with the positive pole of diode 3, the negative pole of diode 3 is connected with direct current input pin 102, alternating current output pin 103 is connected with the primary side of keeping apart step up transformer 2, keep apart the secondary side of step up transformer 2 and be connected with alternating current oil pump 4;
in a specific embodiment, the type of the frequency converter 1 is ZX30-30KW or any other brand, and only a manufacturer needs to adjust the voltage range of a direct current bus to be 180V-550V, the frequency converter 1 is used for reducing power, and if a 20KW oil pump needs to be provided with a 30KW frequency converter.
In a specific embodiment, the input voltage of the alternating current input terminal 5 is AC380V, and may refer to commercial power of AC380V and 50 HZ.
In a specific embodiment, the input voltage of the DC input terminal 6 is DC220V, and a DC220V voltage outputted from a DC screen (not shown in the figure) is used.
In a specific embodiment, the output voltage of the AC power output pin 103 is AC 120V.
In a specific embodiment, the lowest operating bus voltage of the frequency converter 1 is 180V.
The working principle is as follows:
in the embodiment of the utility model, the modulation parameter of the frequency converter 1 is adjusted to make the output of the frequency converter 1 be 3-phase 120V alternating current, and meanwhile, the lowest working bus voltage of the frequency converter 1 needs to be adjusted to be 180V; the AC380V voltage input by the AC input end 5 is converted by the frequency converter 1 and output as 120V AC power supply by the AC output pin 103, and then is raised to 380V by the isolation step-up transformer 2 for the AC oil pump 4 to use; when the alternating current power grid loses power, the direct current 220V voltage output by the direct current screen continuously supplies power to the frequency converter 1 (the frequency converter is in the prior art, and an inverter is arranged in the frequency converter and used for inverting the 220V direct current into alternating current 120V to continuously supply power), and the alternating current oil pump 4 continuously works.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a novel power plant exchanges variable frequency accident oil pump power supply device which characterized in that: the frequency converter comprises an alternating current input end (5), a direct current input end (6), a frequency converter (1), an isolation boosting transformer (2), a diode (3) and an alternating current oil pump (4), wherein the frequency converter (1) comprises an alternating current input pin (101), a direct current input pin (102) and an alternating current output pin (103), the alternating current input end (5) is connected with the alternating current input pin (101), the direct current input end (6) is connected with the positive electrode of the diode (3), the negative electrode of the diode (3) is connected with the direct current input pin (102), the alternating current output pin (103) is connected with the primary side of the isolation boosting transformer (2), and the secondary side of the isolation boosting transformer (2) is connected with the alternating current oil pump (4).
2. The novel power plant alternating current variable frequency accident oil pump power supply device according to claim 1, characterized in that: the type of the frequency converter (1) is ZX30-30 KW.
3. The novel power plant alternating current variable frequency accident oil pump power supply device according to claim 2, characterized in that: the input voltage of the alternating current input end (5) is AC 380V.
4. The novel power plant alternating current variable frequency accident oil pump power supply device according to claim 3, characterized in that: the input voltage of the direct current input end (6) is DC 220V.
5. The novel power plant alternating current variable frequency accident oil pump power supply device according to claim 4, characterized in that: the output voltage of the alternating current output pin (103) is AC 120V.
6. The novel power plant alternating current variable frequency accident oil pump power supply device according to claim 5, characterized in that: and the lowest working bus voltage of the frequency converter (1) is 180V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922388696.0U CN211397849U (en) | 2019-12-27 | 2019-12-27 | Novel power plant alternating-current variable-frequency accident oil pump power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922388696.0U CN211397849U (en) | 2019-12-27 | 2019-12-27 | Novel power plant alternating-current variable-frequency accident oil pump power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211397849U true CN211397849U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922388696.0U Active CN211397849U (en) | 2019-12-27 | 2019-12-27 | Novel power plant alternating-current variable-frequency accident oil pump power supply device |
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| Country | Link |
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| CN (1) | CN211397849U (en) |
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2019
- 2019-12-27 CN CN201922388696.0U patent/CN211397849U/en active Active
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