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Position detector and signal processing device thereof

A signal processing device and detection device technology, which is applied in the direction of measuring devices, using electric/magnetic devices to transmit sensing components, converting sensor outputs, etc., can solve problems such as low efficiency, increased oil production costs, and motor failures

Inactive Publication Date: 2010-11-03
HANGZHOU SES MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When matching with a centrifugal submersible pump, because the motor speed is lower than the synchronous speed, the motor efficiency and power factor are low; when matching with a submersible screw pump, it is difficult to reduce the speed to the speed suitable for the screw pump through the tachometer if the speed is too high , even if the reducer is used, the cost of oil production will be greatly increased and the efficiency of the system will be reduced. If a frequency conversion speed control device is used, the motor will be in a low-frequency working state for a long time and it will easily cause the temperature rise of the motor to accelerate, causing motor failure
The system cannot realize flexible control, and the efficiency is low

Method used

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  • Position detector and signal processing device thereof
  • Position detector and signal processing device thereof
  • Position detector and signal processing device thereof

Examples

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Effect test

no. 1 example

[0091] Figure 5 is an exploded schematic view of the solution of the position detection device installed with two magnetic induction elements according to the first embodiment of the present invention. The position detection device includes parts such as inductive element 710, circuit board 711, magnetic conduction ring 712, stainless steel cover 713, magnetic steel ring 715 and casing (not shown), and magnetic steel ring 715 is installed on the motor tail shaft 716, and the rest can be Installed on the stainless steel cover 713 of the high-voltage threading sealing assembly 714. The feature of this solution is that the position detection device has two magnetic induction elements, and the magnetic permeable ring 712 is also composed of two parts, one is a 1 / 4 magnetic ring, and the other is a 3 / 4 magnetic ring. Two incomplete magnetic rings form two slits for cooperating with two magnetic induction elements.

[0092] Image 6 is a block diagram of a signal processing devi...

no. 2 example

[0148] In the second embodiment, there are two magnetic steel rings and two magnetic permeable rings, and there are correspondingly two columns of magnetic induction elements. These are the key components of the position detection device, and the installation and structure of other components are similar to those of the first The similarity in an embodiment will not be repeated here.

[0149] Figure 15 is an exploded perspective view of key components of the position detection device solution according to the second embodiment of the present invention. Figure 16 is an installation schematic diagram of the position detection device solution according to the second embodiment of the present invention. The position detection device of this embodiment includes a rotor and a stator that covers the rotor inside. The rotor includes a first magnetic steel ring 201a and a second magnetic steel ring 201b as well as a first magnetic permeable ring 205a and a second magnetic permeable ...

no. 3 example

[0173] In the third embodiment, the number of each component and its installation scheme are similar to those in the second embodiment, the difference is the magnetization method of the magnetic steel ring and the arrangement position of the magnetic induction element.

[0174] Figure 28is an exploded perspective view of the position detection device according to the third embodiment. Corresponding to the magnetic steel ring 302 and the magnetic steel ring 303, two columns of magnetic induction elements 308 and 309 are provided respectively. For the convenience of description, the first column of magnetic induction elements, that is, the multiple magnetic induction elements corresponding to the magnetic steel ring 302 and the magnetic conduction ring 304, are represented by the magnetic induction element 308, and the second column of magnetic induction elements, that is, the corresponding magnetic steel ring 303 and the magnetic conduction ring 304. A plurality of magnetic s...

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Abstract

The invention relates to a position detector and a signal processing device thereof. The position detecting device mainly comprises a sensor body, a stainless steel shied, a sealing device and a casing, wherein the sensor body is composed of a magnetic steel ring, a conductive magnet ring and a magnetic induction element; the conductive magnet ring is arranged on the outer wall of the stainless steel shield and is formed by two or more arc segments with same radium and circle center, and a slit is reserved between two adjacent arc segments; the magnetic induction element is arranged in the slit; the magnetic steel ring is arranged in the cavity of the stainless steel shield and is fixed on a motor rotating shaft; the outside of the stainless shield is sealed and fixed with the casing via a sealing device; and when the magnetic steel ring and the conductive magnet ring are in opposite rotation, the magnetic induction element converts the sensed magnetic signals into pressure signals and transmits the pressure signals to a corresponding signal processing device. The position detector in the invention has strong vibration, oil stain and dust resistance, has high reliability, simple installation structure and easy operation and is suitable for high precision detection at a motor rotor position in a severe environment.

Description

technical field [0001] The invention relates to a position detection device and a signal processing device thereof, in particular to a position detection device for a submersible motor and a signal processing device thereof. Background technique [0002] At present, in my country and other oil-producing countries in the world, submersible motors are widely used in oilfields to drive submersible electric pumps to draw crude oil. The power source of traditional electric submersible pump systems is mainly two-pole three-phase asynchronous motors. The oil recovery system has the following problems in the matching of the oil recovery process: [0003] When matching with a centrifugal submersible pump, because the motor speed is lower than the synchronous speed, the motor efficiency and power factor are low; when matching with a submersible screw pump, it is difficult to reduce the speed to the speed suitable for the screw pump through the tachometer if the speed is too high , Eve...

Claims

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Application Information

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IPC IPC(8): G01D5/12G01D5/245
CPCG01D5/145G01D2205/40
Inventor 郝双晖郝明晖
Owner HANGZHOU SES MACHINERY
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