CN202417436U - Electric heating unfreezing blocking device - Google Patents
Electric heating unfreezing blocking device Download PDFInfo
- Publication number
- CN202417436U CN202417436U CN2012200601692U CN201220060169U CN202417436U CN 202417436 U CN202417436 U CN 202417436U CN 2012200601692 U CN2012200601692 U CN 2012200601692U CN 201220060169 U CN201220060169 U CN 201220060169U CN 202417436 U CN202417436 U CN 202417436U
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- electric heating
- circuit
- inverter circuit
- blocking device
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Abstract
The utility model relates to an electric heating unfreezing blocking device. The electric heating unfreezing blocking device mainly solves the problem that a regulating device in the traditional electric heating unfreezing blocking device has oversize volume and is inconvenient to move and operate. The electric heating unfreezing blocking device is characterized in that the electric heating unfreezing blocking device also comprises an inverter circuit, a three phase rectifier transformer, a three phase load rectifier circuit and an electromagnetic coil, wherein the inverter circuit is composed of electronic component IGBTs (Insulated Gate Bipolar Transistors), and the circuits are sequentially connected; a charging circuit which is composed of a charge resistance and an electrolytic capacitor is connected between an output end of a three phase power source rectifier circuit and an input end of the inverter circuit; the two ends of the charge resistance are respectively connected with two connecting ends of a normally open contact of a voltage relay; a coil of the voltage relay is connected on two counter plates of the electrolytic capacitor in parallel; and the inverter circuit is provided with a master control plate with a center controller so as to realize the adjustment of three-phase alternating voltage output by the inverter circuit. The electric heating unfreezing blocking device has the advantages of small volume, light weight, convenience in operation, safety, reliability and the like and is suitable for production requirements of northern oilfields.
Description
Technical field
The utility model relates to a kind of device that northern oil field utilizes electric energy to carry out work that is applied to, and specifically, relates to a kind ofly utilize electric energy that oil transportation, water filling and other metal pipe line because of the freezing obstruction of cold snap are heated to realize the stifled device that thaws.
Background technology
The stifled accident of freezing of oil transportation, water filling and other pipeline often takes place winter owing to the reason in season in oil field, the north.At present this situation is handled, the on-the-spot method that adopts the electric heating de-plugging mostly mainly contains intermediate frequency generator group control method, mobile transformer IGCT control method, induction voltage regulator control method, and method such as three-phase magnetic amplifier.Through facts have proved, these existing methods all exist certain defective in application, concentrate on mostly on the current regulation loop joint.In electric heating thawed stifled equipment, regulating current device was a core technology, and existing these equipment only weight of regulating current device just reach several tons; Complete equipment weight reaches tens tons, is difficult to satisfy the oil field actual needs, ship bulky; Complex operation, relay protection is numerous and diverse but also have a lot of hazards, and risk factor is high; Exist potential safety hazard, be difficult to satisfy the on-the-spot needs that move flexibly.
Summary of the invention
The technical problem of mentioning in order to solve in the background technology, the utility model provide a kind of electric heating block apparatus that thaws, this kind electric heating thaw the block apparatus volume little in light weight, handling safety is reliable, and has energy-conserving and environment-protective, relay protection simple and sensitive reliable characteristics.
The technical scheme of the utility model is: this kind electric heating block apparatus that thaws; Comprise the three phase mains rectification circuit; It is characterized in that: the said electric heating block apparatus that thaws also comprises inverter circuit, three-phase rectifier transformer, threephase load rectification circuit and the three-phase electromagnetic coil of being made up of electronic component IGBT, and aforementioned circuit connects in regular turn; Wherein, Between the input of the output of three phase mains rectification circuit and inverter circuit, be connected with a charging circuit that constitutes by charging resistor and electrolytic capacitor; The two ends of said charging resistor are connected respectively on two links of a moving together contact of voltage relay, and the coils from parallel connection of coils of said voltage relay is on two pole plates of said electrolytic capacitor; Said inverter circuit disposes the master control borad of band central controller to realize the adjusting to the three-phase alternating voltage of its output.
The utlity model has following beneficial effect: this kind electric heating block apparatus that thaws utilizes rectification, IGBT inversion and transforming circuit, and the control output voltage carries out the DC potential de-plugging through isolating transformer, fairing.This kind electric heating block apparatus that thaws utilizes IGBT inversion changing frequency technology; Can output low frequency, intermediate frequency, high frequency electric source carry out eddy-current heating; Can the not endure cold length restriction of plugging line is applicable to the de-plugging construction of different tube diameters, different wall, different buried depth metal pipe line.And can regulate heating-up temperature according to actual needs, and volume is little in light weight, and whole regulating current device, fairing add and have only 0.8 ton together, have that handling safety is reliable, characteristics of energy-conserving and environment-protective and relay protection simple and sensitive.
Description of drawings:
Fig. 1 is the electrical schematic diagram of the related three phase mains rectification circuit of the utility model, IGBT inverter circuit.
Fig. 2 is the electrical schematic diagram of the related three-phase electromagnetic coil of the utility model.
Fig. 3 is the electrical schematic diagram of related three-phase rectifier transformer of the utility model and threephase load rectification circuit.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
This kind electric heating block apparatus that thaws; Comprise the three phase mains rectification circuit; In addition; The said electric heating block apparatus that thaws also comprises inverter circuit, three-phase rectifier transformer, threephase load rectification circuit and the three-phase electromagnetic coil of being made up of electronic component IGBT, and aforementioned circuit such as Fig. 1 connect to shown in Figure 3 in regular turn.Wherein, Between the input of the output of three phase mains rectification circuit and inverter circuit, be connected with a charging circuit that constitutes by charging resistor RL and electrolytic capacitor; Said electrolytic capacitor constitutes by after capacitor C 1 and capacitor C 2 series connection, and the two ends of said charging resistor RL are connected respectively on two links of a moving together contact SL of voltage relay, and the coils from parallel connection of coils of said voltage relay is on two pole plates of said electrolytic capacitor; Like this; After the voltage between two pole plates of electrolytic capacitor reaches assigned voltage, just can the short circuit charging resistor, for inverter and control power supply provide dc source.In addition, said inverter circuit dispose the band central controller master control borad to realize adjusting to the three-phase alternating voltage of its output.
During use, power frequency 380V supply voltage is linked into the three phase mains rectification circuit, RL charges to electrolytic capacitor through charging resistor; After reaching assigned voltage; The short circuit charging resistor, for inverter circuit provides dc source, the adjustable alternating voltage of inverter circuit output three-phase; After the step-down transformer step-down, to the three-phase electromagnetic coil output voltage the stifled dc source that thaws is provided by the threephase load rectification circuit; Inverter circuit is exported the adjustable interchange low frequency of three-phase, intermediate frequency, high frequency frequency conversion voltage on request, for eddy-current heating provides power supply.
Consider that load has diversity, therefore can be with the mode of connection of isolating transformer, to adapt to on-the-spot load condition through contactor change transformer.Can reach local and distant place control according to the requirement of control simultaneously.
Be the example of a practical implementation below:
Connect three-phase 380V power supply at R, S, the T of three phase mains rectification circuit, diode VT1-VT6 selects 200A 1200V diode for use; C1, C2 select 3700uF 450V electrolytic capacitor for use; V1-V6 selects 300A 1200V IGBT for use; Transformer TV1 no-load voltage ratio is 380V/100V; VD1-VD6 selects 500A 400V rectification brachium pontis for use.Power frequency 380V power supply is input to the block apparatus that thaws; Through the CPU in the adjustment inverter circuit master control borad, just can make inverter bridge output three-phase 0-380V adjustable voltage arbitrarily according to command request, be added on the isolating transformer; Be connected to three power rectifier bridges through transformer first and second winding; By the sub-outgoing cable line of triphase silicon rectification device current output terminal, as the stifled heater wire that thaws, when the needs eddy-current heating; On metal pipe line to be heated, twine its tail end of corresponding three-phase coil and do star-like connection, its head end is connected with U, V, the W of inversion output.Can the not endure cold restrictions such as length of plugging line of block apparatus of thawing of this electric heating; This device is applicable to oil field different tube diameters in winter, different wall, different buried depth, and metal pipe line thaws and blocks up construction; And can regulate heating-up temperature or regulate temperature automatically according to actual needs, handling safety be reliable.This device also has remotely controlling functional, can also realize straighforward operation according to on-the-spot needs.
Claims (1)
1. electric heating block apparatus that thaws; Comprise the three phase mains rectification circuit; It is characterized in that: the said electric heating block apparatus that thaws also comprises inverter circuit, three-phase rectifier transformer, threephase load rectification circuit and the three-phase electromagnetic coil of being made up of electronic component IGBT, and aforementioned circuit connects in regular turn; Wherein, Between the input of the output of three phase mains rectification circuit and inverter circuit, be connected with a charging circuit that constitutes by charging resistor (RL) and electrolytic capacitor; The two ends of said charging resistor (RL) are connected respectively on two links of a moving together contact (SL) of voltage relay, and the coils from parallel connection of coils of said voltage relay is on two pole plates of said electrolytic capacitor; Said inverter circuit disposes the master control borad of band central controller to realize the adjusting to the three-phase alternating voltage of its output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200601692U CN202417436U (en) | 2012-02-23 | 2012-02-23 | Electric heating unfreezing blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200601692U CN202417436U (en) | 2012-02-23 | 2012-02-23 | Electric heating unfreezing blocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417436U true CN202417436U (en) | 2012-09-05 |
Family
ID=46742209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200601692U Expired - Fee Related CN202417436U (en) | 2012-02-23 | 2012-02-23 | Electric heating unfreezing blocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437656A (en) * | 2016-12-12 | 2017-02-22 | 中国地质大学（北京） | Oil and gas reservoir permeation-increasing and plugging-releasing device based on liquid-electric effect |
-
2012
- 2012-02-23 CN CN2012200601692U patent/CN202417436U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437656A (en) * | 2016-12-12 | 2017-02-22 | 中国地质大学（北京） | Oil and gas reservoir permeation-increasing and plugging-releasing device based on liquid-electric effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20150223 |
|
| EXPY | Termination of patent right or utility model |