RU22964U1 - SUBMERSIBLE ELECTRIC PUMP CONTROL STATION "ELECTON" - Google Patents

Description

SUBMERSIBLE ELECTRIC PUMP CONTROL STATION

The utility model relates to complete control devices for electric motors of submersible pumps in oil wells. The submersible electric pump control station is used both for oil production and in water facilities, for the injection of formation water, and is designed for submersible pumps with motors up to 160 kW and voltage up to 3000 V AC. The station is designed for outdoor installation.

A complete device KAU-01 is known (see Technical Description and Operating Instructions for RE VIEEL. 566412. 001. TO), manufactured by the Minsk Electrotechnical Plant named after V.I. Kozlov, which is a double-sided service cabinet in which the devices are energized over 660V, located in a separate compartment. Control, signaling and control devices are located on the front door of the device. The front parts of control, signaling and control apparatuses are closed from the external environment by an additional door with seals. The design of the device also includes blinds for ventilation, mechanical locking of the high-voltage compartment, electrical locking of the front door, mechanical locking of the power connector.

The development of the claimed object is based on the decision of the ShGS 5805 submersible electric pump control station manufactured by the Kharkov Electromechanical Plant (see Technical Description and Instruction for Operation INBU 674 791 001 TO), which is a one-way service cabinet containing a power supply, a control unit, a switching device, front panel of controls and indicators, circuit breakers of the power supply and devices

 IPC Е21В 43/00

H 05 to 5/00

ELECTON

control, limit switch associated with the electrical interlock of the main door; a power connector switch, as well as a high-voltage compartment, comprising a station power switch-disconnector, fuses, two current transformers, a resistor panel; cable hatches are made on the bottom panel of the cabinet, the main cabinet door is equipped with locks and has a tight seal; a small door that provides access to the front panel of the controls and indicators is equipped with locks and a tight seal; the door of the high-voltage compartment is equipped with a mechanical interlock, a power connector is installed on the right side wall of the cabinet, the upper panel of the cabinet is equipped with sling hinges, the cabinet is mounted on the base. The station has the following disadvantages:

- the case is made single-section, containing in one cavity both starting and wiring equipment, that is, power, operating with high voltages and currents, and the control unit. The control unit panel consists of the front panels of the control cells, on which the control, adjustment and signaling devices are located that do not have access to the front panel of the station. This design decision leads to the shutdown of the station if it is necessary to access the settings of the control unit (when the main door is opened, the station turns off), which means the cessation of oil production.

- the front panel of the station is displayed on the upper part of the main door, which creates inconvenience in operation when the main door is open due to protruding parts of the equipment;

- cable entry through the bottom of the station makes it difficult to install cables of large cross-section, since it becomes necessary to bend them, which is quite laborious, especially in conditions, for example, frost.

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improving the manufacturability of the design, reducing the complexity of installation work.

The specified technical result is achieved by the fact that in the station, which is a cabinet containing a control device, a front panel of controls and indicators, and power equipment operating with high voltages and currents, the cabinet is made two-section, containing a control device in the upper, smaller control compartment and the front panel of the controls and indicators, and in the lower, large power compartment - power equipment; a cable entry section is installed on the rear panel of the station case, the case of which is made in the form of a rectangular parallelepiped, the front panel of which is made opening, and the bottom panel has cable hatches.

The execution of the cabinet body is two-sectional, with the separation of power and electronic equipment, provides full reach (accessibility) of all control devices, settings and indication of the station during maintenance without stopping oil production.

The presence of the cable entry section allows to facilitate installation work on connecting large cross-section cables to the station, since cable hatches are fully accessible and there is no need to bend the cable. The station allows two-way maintenance, which reduces the time required for installation work, as installation work can be carried out simultaneously by two specialists.

The introduction of three measuring voltage transformers, as well as a third measuring current transformer, provides the station with a number of additional protections for current and voltage imbalances.

The implementation of the control device in the form of a digital controller provides the station with a number of additional protections, functions and the regulation of their settings.

new and small doors, b) Frontal projection of the station with open doors of the high-voltage compartment and the control compartment.

In FIG. 3 is a drawing of a General view. Back view. Rear view of the cable entry section with the door open.

The inventive control station for submersible electric pumps Electon constructively consists of the following main components (see Figure 1): a metal cabinet 1, made in the form of a vertically oriented rectangular parallelepiped mounted on the base 2 with elements of installation (transportation) supports 3 and 4, which can be used also for fixing the station; the base is made in the form of two support posts, right and left, each of which has a box shape; the main door 5 of the power compartment, providing access to the power nodes of the station; a small door 6, providing access to the control compartment of the station; the housing 7 of the cable entry section, made in the form of a rectangular parallelepiped mounted on the upper part of the rear panel of the station housing and having a door 8. The upper panel of the cable entry section is integral with the upper panel of the station housing, and the lower panel has cable hatches 9 for input cables. Each of the doors 5, 6 and 8 has two locks 10. On the bottom of the right side panel of the housing there is a socket (power connector) 11 with a locking mechanism that prevents the connection (disconnection) of an external voltage load. The lower panel of the power compartment has cable hatches 12. At the top and bottom of the right panel of the station body are installed transport supports 13. The upper panel of the cabinet is equipped with sling loops 14.

In the control compartment (see Fig. 2) there is a power supply 15, a control device, which is a digital controller, 16, a front panel 17 of the controls and indications, made in the form of a door, when opened, access to the wiring and connectors of the controller appears. The controller panel with a liquid crystal display 18 and a film keyboard 19 is located on the front panel of the 17 organs

control and indication on which the controller case is also fixed; on the panel of the power supply 15 there are three voltage measuring transformers 20.

In the lower power compartment are placed the circuit breakers 21 of the power supply and voltage measuring transformers, the circuit breaker 22 of the power connector, the switch of the terminal 23 of the electrical interlock of the main door and the high-voltage compartment with the door 24.

The high-voltage compartment is made to the entire height of the power compartment and contains a switch-disconnector 25 of the station’s power supply, fuses 26, three current measuring transformers 27, shunt boards 28, a resistor panel 29, and a switching device 30, which is a vacuum contactor. The door 24 of the high voltage compartment is provided with a mechanical interlock. The door 5 of the power compartment is equipped with an electrical interlock.

The door 8 of the cable entry section (see Fig. 3) provides access to the fasteners 31 and the connection terminals 32 of the power supply cables. The cable entry section is connected to the power compartment by a transition hole 33. Two brackets 34 with cable fastening elements are installed on the lower part of the rear panel of the station case. On the back surface of each of the support posts of the base 2 is installed grounding element 35.

Doors 5, 6, 8 are equipped with a tight seal.

The assembly of the station is as follows. After preliminary assembly, functionally finished units are mounted in the compartments of the cabinet. The power supply unit 15 is bolted to the rear inner wall of the control compartment, and voltage transformers 20 are also attached to it. The controller 16 is inserted into the mounting hole on the front panel 17 so that its panel is located on the front panel 17 and fastened with screws. On the front panel 17, control and indication elements are also installed: circuit breaker, switch, signal lamps, connector, Start button.

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in the upper right part of the high-voltage compartment, a bracket is installed with a switch-disconnector 25 and fuses 26 fixed to it and fastened to the beams on the rear wall with bolts. In the upper left part of the high-voltage compartment, a bracket is mounted with a fixed vacuum contactor 30, which is bolted to the beams on the rear wall. In the lower part, a bracket is mounted with three measuring current transformers 27, each of which is equipped with a board of shunts 28. A panel of resistors 29 mounted on the insulator is mounted on the bottom wall.

The circuit breakers 21 of the power supply unit and voltage measuring transformers are mounted on the dynke in the upper part of the power compartment, and the power connector circuit breaker 22 is installed in the lower part. To the right side wall of the power compartment, an end switch 23 of the main door electrical lock is attached.

On the bottom wall of the cable entry section 7 directly at the cable hatches 9, fastening elements 31 of the power supply cable are installed. On the rear wall of the cable entry section 7 on the insulators, terminals 32 are installed for connecting the power supply cables. On the lower part of the back panel of the cabinet, two brackets 34 with cable fastening elements are installed. On the back surface of each of the support posts of the base 2, an earth element 35 is installed.

Installation of the station is carried out in two stages. At the first stage, the station is installed internally in the production conditions of the manufacturer. The bundled bundle is laid at the station, laying the wires in a perforated box, then the wires are wired and connected. At the second stage, the station is connected directly at the oil field to an external power source and to a power step-up transformer, which is part of the standard ground-based equipment for oil wells. Connection to measuring current transformers 28 is carried out through cable hatches 12, made on the bottom panel of the cabinet. Connection to the vacuum contactor 30 is made through the cable entry section 7. The cables are inserted into the cable hatches 9, fixed in brackets 34, then, with the help of fastening elements 31, they are fixed and clamped.

The presence of the cable entry section eliminates the need for bending the cable, which makes it easier to install cables in the field, as well as connecting the vacuum contactor to the terminals for connecting 32 cables of the mains in a production environment, which contributes to an increase in the quality and reliability of installation.

If it is necessary to carry out repair work, the failed unit is dismantled and repairs are carried out under production conditions. The dismantling of the station is carried out in the reverse order.

The implementation of the cabinet of the station with two sections, as well as equipping it with a cable entry section, improves the reliability of the station, the manufacturability of the design, and also reduces the complexity of installation work.

Claims (1)

Control station for submersible electric pumps, which is a cabinet containing a control device, a front panel of controls and indicators, and power equipment operating with high voltages, characterized in that the cabinet is made of two sections, containing a control device and a front panel in the upper, smaller control compartment control and indication, and in the lower, larger power compartment - power equipment, a cable entry section is installed on the rear panel of the station case, the case of which is made in the form a rectangular parallelepiped, the front panel of which is made opening, and the lower panel has cable hatches.