Frequency conversion control cabinet of oil pumping unit

Abstract

The utility model discloses a frequency conversion control cabinet of an oil pumping unit, relates to the technical field of frequency conversion control cabinets, and aims to solve the problem that the traditional oil pumping unit is not high in equipment integration degree, a cable joint is arranged at the top end of a cabinet body, and the cabinet body is provided with a control assembly, a display assembly and a heat dissipation assembly. The low-voltage control device is arranged at the top end in the cabinet body and connected with the control assembly and the display assembly, the circuit breaker assembly is arranged at the top end in the cabinet body and arranged in parallel with the low-voltage control device, the input end of the transformer is connected with the output end of the circuit breaker assembly, and the output end of the transformer is connected with the low-voltage control device. The contactor assembly is arranged at the top end in the cabinet body, the input end of the contactor assembly is connected with the output end of the circuit breaker assembly, the output end of the contactor assembly is connected with the mutual inductor, the frequency converter is arranged at the bottom end of the circuit breaker assembly and connected with the contactor assembly, and the active filtering assembly is movably arranged at the bottom end of the low-voltage control device. The input end of the active filtering assembly is connected with the output end of the circuit breaker assembly, and the output end is connected with the input end of the frequency converter.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency conversion control cabinets, and more specifically to a frequency conversion control cabinet for an oil pumping unit. Background Art

[0002] The offshore oil pumping unit frequency conversion control cabinet is a device that controls the operation of offshore oil pumping units. Due to the harsh offshore environment and the limitation of platform space, traditional oil pumping unit equipment has disadvantages such as large size and difficult maintenance.

[0003] Therefore, how to solve the problem of low integration of traditional oil pumping equipment is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a frequency conversion control cabinet for an oil pumping unit, in which the electrical components in the cabinet are arranged front to back, the structure is compact, and the space utilization rate is high.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A frequency conversion control cabinet for an oil pumping unit, comprising:

[0007] The cabinet body has a cable connector at the top and is provided with a control component, a display component and a heat dissipation component;

[0008] A low-voltage control device is arranged at the top of the cabinet, and the low-voltage control device is connected with the control component and the display component;

[0009] The circuit breaker assembly is arranged at the top of the cabinet, the circuit breaker assembly and the low-voltage control device are arranged in parallel, the output end of the circuit breaker assembly is connected to the input end of the transformer, and the output end of the transformer is connected to the low-voltage control device;

[0010] The contactor assembly is arranged at the top of the cabinet, the input end of the contactor assembly is connected to the output end of the circuit breaker assembly, and the output end of the contactor assembly is connected to the mutual inductor;

[0011] The frequency converter is arranged at the bottom end of the circuit breaker assembly and fixed in the cabinet, and the frequency converter is connected to the contactor assembly;

[0012] The active filter component is movably arranged at the bottom of the low-voltage control device, the input end of the active filter component is connected to the output end of the circuit breaker component, and the output end of the active filter component is connected to the input end of the frequency converter.

[0013] Preferably, the circuit breaker assembly comprises a first circuit breaker and a second circuit breaker, and both the first circuit breaker and the second circuit breaker are connected to the contactor assembly via a copper busbar.

[0014] Preferably, the contactor assembly comprises:

[0015] A power frequency contactor, the input end of the power frequency contactor is connected to the first circuit breaker through a copper busbar, and the output end of the power frequency contactor is connected to the mutual inductor;

[0016] A variable frequency contactor, wherein the input end of the variable frequency contactor is connected to the second circuit breaker, and the output end of the variable frequency contactor is connected to the frequency converter.

[0017] Preferably, the active filter assembly includes two active filters, both of which are connected to the output end of the second circuit breaker, and the output ends of the active filters are connected to the input end of the frequency converter.

[0018] Preferably, the control component and the display component are arranged on the front door of the cabinet, the display component includes an indicator light and an electric meter, and the control component includes a control keyboard, an active filter controller and a switch.

[0019] Preferably, the heat dissipation component comprises:

[0020] Heat dissipation windows, located on the front door and the rear door of the cabinet;

[0021] At least two heat dissipation fans are provided, and at least two heat dissipation fans are arranged at the top of the rear door.

[0022] Preferably, the front door and the rear door are rotatably connected to the cabinet body via hinges.

[0023] Preferably, the cabinet is a sheet metal cabinet or a stainless steel cabinet.

[0024] The utility model provides a frequency conversion control cabinet for an oil pump, comprising a cabinet, a low-voltage control device, a control assembly, a display assembly, a circuit breaker assembly, a contactor assembly, a mutual inductor, a frequency converter and an active filter assembly. Specifically, a cable connector is provided at the top of the cabinet to achieve connection of various electrical components in the cabinet. The cabinet is provided with a control assembly, a display assembly and a heat dissipation assembly. The operation of various electrical components is controlled by the control assembly, the state of the electrical components is displayed by the display assembly, and the heat generated by various electrical components in the cabinet during operation is dissipated by the heat dissipation assembly.

[0025] The low-voltage control device is arranged at the internal top of the cabinet and is connected to the control component and the display component. The operating status of the low-voltage control device is controlled by the control component and displayed by the display component. The circuit breaker component is arranged at the internal top of the cabinet and is arranged in parallel with the low-voltage control device. The low-voltage control device and the circuit breaker component are arranged in parallel on the top of the cabinet to make the layout inside the cabinet compact. The output end of the circuit breaker component is connected to the input end of the transformer, and the output end of the transformer is connected to the low-voltage control device, thereby forming a path for controlling the low-voltage controller between the circuit breaker component, the transformer and the low-voltage control device.

[0026] The contactor assembly is arranged at the top of the cabinet, the input end of the contactor assembly is connected to the output end of the circuit breaker assembly, the output end of the contactor assembly is connected to the mutual inductor, the contactor assembly is arranged at the back of the circuit breaker assembly, and the contactor assembly and the circuit breaker assembly are arranged front and back to improve the space utilization in the cabinet, make the structure more compact, and improve the integration. The frequency converter is arranged at the bottom of the circuit breaker assembly and fixed in the cabinet, the frequency converter is connected to the contactor assembly, and the frequency converter is arranged so that the frequency output of the path connected to the frequency converter can be changed.

[0027] The active filter assembly is movably arranged at the bottom of the low-voltage control device, the input end of the active filter assembly is connected to the output end of the circuit breaker assembly, and the output end of the active filter assembly is connected to the input end of the frequency converter, thereby forming a path for controlling the output frequency between the circuit breaker assembly, the active filter assembly and the frequency converter. The low-voltage control device, the circuit breaker assembly and the contactor assembly are arranged at the top of the cabinet, and the contactor assembly is arranged on the back of the circuit breaker assembly, and the frequency converter and the active filter assembly are arranged at the bottom of the low-voltage control device. The layout mode of the upper and lower structure and the front and back structure is adopted to make the structure in the cabinet more compact, thereby improving the integration of the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 A structural schematic diagram of a frequency conversion control cabinet for an oil pumping unit from a perspective provided by the utility model;

[0030] Figure 2 This is a structural schematic diagram of the oil pumping unit frequency conversion control cabinet from another perspective provided by the utility model.

[0031] Figure 1-Figure 2 , the reference numerals include:

[0032] 1-cabinet, 101-front door, 102-back door;

[0033] 2-control component, 21-control keyboard, 22-active filter controller, 23-switch;

[0034] 3-display component, 31-indicator light, 32-electricity meter;

[0035] 4- heat dissipation component, 41- heat dissipation window, 42- heat dissipation fan;

[0036] 5-Low voltage control device;

[0037] 6-circuit breaker assembly, 61-first circuit breaker, 62-second circuit breaker;

[0038] 7- Transformer;

[0039] 8-contactor assembly, 81-power frequency contactor, 82-variable frequency contactor;

[0040] 9-Mutual inductor;

[0041] 10-Inverter;

[0042] 11- Active filter components. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] The core of the utility model is to provide a frequency conversion control cabinet for oil pumping units. The electrical components in the cabinet body 1 are arranged front to back, with a compact structure and high space utilization.

[0045] Please refer to Figure 1 and Figure 2 A pumping unit frequency conversion control cabinet includes a cabinet body 1, a low voltage control device 5, a control component 2, a display component 3, a circuit breaker component 6, a contactor component 8, a mutual inductor 9, a frequency converter 10 and an active filter component 11.

[0046] Specifically, a cable connector is provided at the top of the cabinet 1 to achieve connection of various electrical components in the cabinet 1 .

[0047] The cabinet 1 is provided with a control component 2, a display component 3 and a heat dissipation component 4. The control component 2 controls the operation of each electrical component, the display component 3 displays the state of the electrical component, and the heat dissipation component 4 dissipates the heat generated by the operation of each electrical component in the cabinet 1.

[0048] The low-voltage control device 5 is arranged at the top of the interior of the cabinet 1 and is connected to the control component 2 and the display component 3. The operating status of the low-voltage control device 5 is controlled by the control component 2 and displayed by the display component 3. The circuit breaker component 6 is arranged at the top of the interior of the cabinet 1 and is arranged in parallel with the low-voltage control device 5. The low-voltage control device 5 and the circuit breaker component 6 are arranged in parallel on the top of the cabinet 1 to make the layout inside the cabinet 1 compact. The output end of the circuit breaker component 6 is connected to the input end of the transformer 7, and the output end of the transformer 7 is connected to the low-voltage control device 5, thereby forming a path for controlling the low-voltage controller 5 between the circuit breaker component 6, the transformer 7 and the low-voltage control device 5.

[0049] The contactor assembly 8 is arranged at the top of the cabinet 1, the input end of the contactor assembly 8 is connected to the output end of the circuit breaker assembly 6, the output end of the contactor assembly 8 is connected to the mutual inductor 9, the contactor assembly 8 is arranged on the back of the circuit breaker assembly 6, and the contactor assembly 8 and the circuit breaker assembly 6 are arranged front and back to improve the space utilization in the cabinet 1, make the structure more compact, and improve the integration of the cabinet 1. The frequency converter 10 is arranged at the bottom end of the circuit breaker assembly 6 and fixed in the cabinet 1, and the frequency converter 10 is connected to the contactor assembly 8. The frequency converter 10 is arranged so that the frequency output of the path connected to the frequency converter 10 can be changed.

[0050] The active filter assembly 11 is movably arranged at the bottom end of the low-voltage control device 5, the input end of the active filter assembly 11 is connected to the output end of the circuit breaker assembly 6, and the output end of the active filter assembly 11 is connected to the input end of the frequency converter 10, thereby forming a path for controlling the output frequency between the circuit breaker assembly 6, the active filter assembly 11 and the frequency converter 10.

[0051] In the oil pumping unit variable frequency control cabinet arranged in the above manner, the low voltage control device 5, the circuit breaker assembly 6 and the contactor assembly 8 are arranged on the top of the cabinet 1, and the contactor assembly 8 is arranged on the back of the circuit breaker assembly 6, and the frequency converter 10 and the active filter assembly 11 are arranged on the bottom of the low voltage control device 5. The layout of the upper and lower structures and the front and back structures is adopted to make the structure in the cabinet 1 more compact, thereby improving the integration of the cabinet 1.

[0052] In the above embodiment, the circuit breaker assembly 6 includes a first circuit breaker 61 and a second circuit breaker 62 , and both the first circuit breaker 61 and the second circuit breaker 62 are connected to the contactor assembly 8 through a copper busbar.

[0053] It should be noted that the input ends of the first circuit breaker 61 and the second circuit breaker 62 are connected to the customer incoming line end through cables, and the output ends of the first circuit breaker 61 and the second circuit breaker 62 are connected to the contactor assembly 8 through a copper busbar, and the mutual inductor 9 is installed on the copper busbar.

[0054] Among them, the first circuit breaker 61 is a high-power circuit breaker, and the second circuit breaker 62 is a low-power circuit breaker. In actual life, there is no limitation on this as long as the above technical effect can be achieved.

[0055] In the above case, the contactor assembly 8 includes a power frequency contactor 81 and a variable frequency contactor 82, the input end of the power frequency contactor 81 is connected to the first circuit breaker 61 through a copper bus, the output end of the power frequency contactor 81 is connected to the mutual inductor 9, the input end of the variable frequency contactor 82 is connected to the second circuit breaker 62, and the output end of the variable frequency contactor 82 is connected to the frequency converter 10.

[0056] It can be understood that the output end of the first circuit breaker 61 is connected to the input end of the power frequency contactor 81 through a copper bar, and the output end of the power frequency contactor 81 is directly connected to the customer motor through a cable, and is not connected to the frequency converter 10, so that the output frequency remains unchanged; the input end of the frequency converter contactor 82 is connected to the output end of the second circuit breaker 62 through a copper bar, and the output end of the frequency converter contactor 82 is connected to the input end of the frequency converter 10 through a cable, and the output end of the frequency converter 10 is connected to the customer motor through a cable, so that the output frequency changes. By setting the power frequency contactor 81 and the frequency converter contactor 82, the switching between power frequency and frequency conversion can be realized.

[0057] Furthermore, the active filter assembly 11 includes two active filters, both of which are connected to the output end of the second circuit breaker 62 , and both of the output ends of the active filters are connected to the input end of the frequency converter 10 .

[0058] It should be noted that the input end of the active filter is connected to the output end of the second circuit breaker 62 through a cable, and the active filter adopts a drawer-type installation structure, which is convenient for pulling out the active filter for maintenance and overhaul.

[0059] In the above embodiment, the control component 2 and the display component 3 are arranged on the front door 101 of the cabinet 1 , the display component 3 includes an indicator light 31 and an electric meter 32 , and the control component 2 includes a control keyboard 21 , an active filter controller 22 and a switch 23 .

[0060] It can be understood that the indicator light 31 and the electric meter 32 are both connected to the low-voltage control device 5, and the status of the low-voltage control device 5 is displayed by the indicator light 31 and the electric meter 32. The instructions for controlling the operation of each device can be input through the control keyboard 21, the operating status of the active filter can be independently controlled by the active filter controller 22, and the start and stop of the oil pump frequency conversion control cabinet can be realized through the switch 23.

[0061] Based on the above embodiment, the heat dissipation component 4 includes a heat dissipation window 41 and a heat dissipation fan 42. The front door 101 and the rear door 102 of the cabinet 1 are both provided with a heat dissipation window 41. There are at least two heat dissipation fans 42, and at least two heat dissipation fans 42 are arranged at the top of the rear door 102.

[0062] It should be noted that both the front door 101 and the rear door 102 are designed with detachable heat dissipation windows 41, which can be replaced according to different protections.

[0063] In the above embodiment, the front door 101 and the rear door 102 are both rotatably connected to the cabinet 1 via hinges.

[0064] It can be understood that the front door 101, the rear door 102 are rotatably connected to the cabinet 1 by hinges. When the components in the cabinet 1 need to be inspected, the drawer-type heat dissipation assembly 4 can be inspected by opening the front door 101, and the inverter 10, the first circuit breaker 61, the second circuit breaker 62, the low-voltage control device 5 and the active filter can be directly disassembled and maintained. By opening the rear door 102, the power frequency contactor 81 and the variable frequency contactor 82 can be disassembled and maintained.

[0065] As a preferred implementation, the cabinet body 1 is a sheet metal cabinet body 1 or a stainless steel cabinet body 1 .

[0066] It should be noted that the cabinet 1 can be made of sheet metal spraying or stainless steel to resist the erosion of salt spray at sea.

[0067] In summary, in the oil pumping unit variable frequency control cabinet provided by the utility model, the electrical components in the cabinet body 1 are arranged front to back, the structure is compact, and the space utilization rate is high.

[0068] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0069] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0070] The above is a detailed introduction to a pumping unit variable frequency control cabinet provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A frequency conversion control cabinet for an oil pump, characterized in that: include: A cabinet (1), wherein a cable connector is provided at the top of the cabinet (1), and the cabinet (1) is provided with a control component (2), a display component (3) and a heat dissipation component (4); A low-voltage control device (5) is arranged at the top of the cabinet (1), and the low-voltage control device (5) is connected to the control component (2) and the display component (3); A circuit breaker assembly (6) is arranged at the top of the cabinet (1), the circuit breaker assembly (6) and the low-voltage control device (5) are arranged in parallel, the output end of the circuit breaker assembly (6) is connected to the input end of the transformer (7), and the output end of the transformer (7) is connected to the low-voltage control device (5); A contactor assembly (8) is arranged at the top of the cabinet (1), the input end of the contactor assembly (8) is connected to the output end of the circuit breaker assembly (6), and the output end of the contactor assembly (8) is connected to the mutual inductor (9); A frequency converter (10) is arranged at the bottom end of the circuit breaker assembly (6) and fixed in the cabinet (1), and the frequency converter (10) is connected to the contactor assembly (8); An active filter component (11) is movably arranged at the bottom end of the low-voltage control device (5), the input end of the active filter component (11) is connected to the output end of the circuit breaker component (6), and the output end of the active filter component (11) is connected to the input end of the frequency converter (10).

2. The frequency conversion control cabinet for oil pumping units according to claim 1 is characterized in that: The circuit breaker assembly (6) comprises a first circuit breaker (61) and a second circuit breaker (62), and the first circuit breaker (61) and the second circuit breaker (62) are both connected to the contactor assembly (8) via a copper busbar.

3. The frequency conversion control cabinet for oil pumping units according to claim 2 is characterized in that: The contactor assembly (8) comprises: A power frequency contactor (81), wherein the input end of the power frequency contactor (81) is connected to the first circuit breaker (61) via the copper busbar, and the output end of the power frequency contactor (81) is connected to the mutual inductor (9); A variable frequency contactor (82), wherein an input end of the variable frequency contactor (82) is connected to the second circuit breaker (62), and an output end of the variable frequency contactor (82) is connected to the frequency converter (10).

4. The frequency conversion control cabinet for oil pumping units according to claim 3 is characterized in that: The active filter assembly (11) comprises two active filters, both of which are connected to the output end of the second circuit breaker (62), and both of which have their output ends connected to the input end of the frequency converter (10).

5. The frequency conversion control cabinet for oil pumping units according to claim 4 is characterized in that: The control component (2) and the display component (3) are arranged on the front door (101) of the cabinet (1); the display component (3) comprises an indicator light (31) and an electric meter (32); and the control component (2) comprises a control keyboard (21), an active filter controller (22) and a switch (23).

6. The frequency conversion control cabinet for oil pumping units according to claim 5 is characterized in that: The heat dissipation component (4) comprises: A heat dissipation window (41) provided on the front door (101) and the rear door (102) of the cabinet (1); At least two heat dissipation fans (42) are provided, and at least two of the heat dissipation fans (42) are provided at the top end of the rear door (102).

7. The frequency conversion control cabinet for oil pumping units according to claim 6 is characterized in that: The front door (101) and the rear door (102) are both rotatably connected to the cabinet body (1) via hinges.

8. The frequency conversion control cabinet for oil pumping units according to any one of claims 1 to 7, characterized in that: The cabinet (1) is a sheet metal cabinet or a stainless steel cabinet.

Images