CN215486433U - Variable-frequency speed regulation system of pump unit - Google Patents
Variable-frequency speed regulation system of pump unit Download PDFInfo
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- CN215486433U CN215486433U CN202121409216.5U CN202121409216U CN215486433U CN 215486433 U CN215486433 U CN 215486433U CN 202121409216 U CN202121409216 U CN 202121409216U CN 215486433 U CN215486433 U CN 215486433U
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Abstract
A pump unit variable frequency speed control system is characterized by comprising a variable frequency speed control device, a specially-made centrifugal pump, a central controller, a flowmeter, a first pressure transmitter, a second pressure transmitter and a water injection pump, wherein the variable frequency speed control device is connected with the specially-made centrifugal pump; the impeller of the special centrifugal pump can stretch along with the frequency change of the variable-frequency speed regulating device, and when the frequency of the variable-frequency speed regulating device is reduced, the impeller of the special centrifugal pump stretches along with the variable-frequency speed regulating device.
Description
Technical Field
The utility model relates to a variable frequency speed control system of a pump unit, and belongs to the field of pump equipment.
Background
The variable frequency speed regulation is widely applied in the pump industry, and the mature and flexible control technology and the brought economic benefits are well accepted. Along with the oil field entering the development period of high and medium water content, the water injection quantity is increased year by year, and the power consumption of water injection is greatly increased. In actual production, the pressure of a pump station is changed frequently due to the instability of a water injection system, when the pressure exceeds or is lower than a specified value, the pressure can be adjusted only by manually starting and stopping a pump or pumping back flow and adjusting a valve, a large pressure difference exists between the pump pressure of the water injection pump and the pipe pressure, and a large amount of effective electric energy is consumed.
Disclosure of Invention
In order to solve the defects and shortcomings, the utility model provides a variable-frequency speed regulating system of a pump unit.
The technical scheme adopted by the utility model for solving the technical problem is as follows:
a pump unit variable frequency speed control system is characterized by comprising a variable frequency speed control device, a specially-made centrifugal pump, a central controller, a flowmeter, a first pressure transmitter, a second pressure transmitter and a water injection pump, wherein the variable frequency speed control device is connected with the specially-made centrifugal pump; the impeller of the special centrifugal pump can stretch along with the frequency change of the variable-frequency speed regulating device, and when the frequency of the variable-frequency speed regulating device is reduced, the impeller of the special centrifugal pump stretches along with the variable-frequency speed regulating device.
The utility model has the following beneficial effects: the water injection pump is optimized and reduced in level, and the frequency conversion technology of the additionally-installed pump is applied, so that the energy consumption is reduced to the minimum, and the aims of saving energy and reducing consumption are fulfilled.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1, a pump unit variable frequency speed control system comprises a variable frequency speed control device, a special centrifugal pump, a central controller, a flowmeter, a first pressure transmitter, a second pressure transmitter and a water injection pump, wherein the variable frequency speed control device is connected with the special centrifugal pump which is connected with the flowmeter, the special centrifugal pump is connected with the first pressure transmitter which is connected with the central controller, the central controller is connected with the second pressure transmitter which is connected with the second pressure transmitter, the central controller is connected with the flowmeter, the second pressure transmitter is connected with the water injection pump, the third pressure transmitter is connected with the water injection pump, and the third pressure transmitter is connected with the central controller; the impeller of the special centrifugal pump can stretch along with the frequency change of the variable-frequency speed regulation device to ensure that the flow is constant, the flow is equal to the flow velocity multiplied by the cross sectional area, when the frequency of the variable-frequency speed regulation device is reduced, the impeller of the special centrifugal pump stretches along with the variable-frequency speed regulation device to increase the cross sectional area of the flow guide of the special centrifugal pump, and the flow can be measured by the flow meter to keep constant, so that the aim of saving energy is fulfilled.
The working principle is as follows: liquid enters from the pressure transmitter, the pressure at the inlet of the specially-made centrifugal pump is monitored by the pressure transmitter and fed back to the central controller, and if the pressure of the injected liquid is too low or too high, an alarm device of the central controller is triggered to remind a user; the central controller carries out frequency regulation on the variable-frequency speed regulation device according to the numerical value feedback of the pressure transmitter II so as to control the motor rotating speed of the special centrifugal pump, and the special centrifugal pump adjusts the expansion amount of an impeller of the special centrifugal pump according to the motor rotating speed; and the central controller is used for adjusting the measuring range of the flowmeter according to the numerical feedback of the pressure transmitter III.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A pump unit variable frequency speed control system is characterized by comprising a variable frequency speed control device, a specially-made centrifugal pump, a central controller, a flowmeter, a first pressure transmitter, a second pressure transmitter and a water injection pump, wherein the variable frequency speed control device is connected with the specially-made centrifugal pump which is connected with the flowmeter, the specially-made centrifugal pump is connected with the first pressure transmitter, the first pressure transmitter is connected with the central controller which is connected with the second pressure transmitter, the specially-made centrifugal pump is connected with the second pressure transmitter, the central controller is connected with the flowmeter, the second pressure transmitter is connected with the water injection pump, the third pressure transmitter is connected with the water injection pump, and the third pressure transmitter is connected with the central controller; the impeller of the special centrifugal pump can stretch along with the frequency change of the variable-frequency speed regulating device, and when the frequency of the variable-frequency speed regulating device is reduced, the impeller of the special centrifugal pump stretches along with the variable-frequency speed regulating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121409216.5U CN215486433U (en) | 2021-06-24 | 2021-06-24 | Variable-frequency speed regulation system of pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121409216.5U CN215486433U (en) | 2021-06-24 | 2021-06-24 | Variable-frequency speed regulation system of pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215486433U true CN215486433U (en) | 2022-01-11 |
Family
ID=79721674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121409216.5U Active CN215486433U (en) | 2021-06-24 | 2021-06-24 | Variable-frequency speed regulation system of pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215486433U (en) |
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2021
- 2021-06-24 CN CN202121409216.5U patent/CN215486433U/en active Active
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