CN2291498Y

CN2291498Y - Downhole petroleum heating controller

Info

Publication number: CN2291498Y
Application number: CN 97233450
Authority: CN
Inventors: 李志伟; 李庆春; 唐维民; 王明君; 唐志宏; 刘小东; 吴安东
Original assignee: Liaohe Petroleum Exploration Bureau Ciyutuo Oil Extraction Factory
Current assignee: Liaohe Petroleum Exploration Bureau Ciyutuo Oil Extraction Factory
Priority date: 1997-06-13
Filing date: 1997-06-13
Publication date: 1998-09-16
Anticipated expiration: 2007-06-13

Abstract

The utility model relates to a downhole petroleum heating control device, comprising a power supply circuit, a rectification circuit, a filter circuit, a compensation circuit, and a control circuit. The downhole petroleum heating control device is characterized in that The compensation circuit is composed of three resistors and three capacitors which are connected. The input end of the compensation circuit is connected with the output end of the power supply circuit, and the output end of the compensation circuit is connected with the center end of the filter circuit. The utility model has the advantages that the downhole petroleum heating control device has safe use and low manufacturing cost, and the compensation circuit which is adopted is simple.

Description

Down-hole oil heating control apparatus

The utility model belongs to a kind of novel down-hole petroleum heating device.

In the present oil exploitation of China, because oil well is deep, part flowing life is shorter, part oil well can not blowing, thereby utilizes special equipment to take different pumps to the down-hole oil pumping, but during for the bigger oil mining of viscosity, not only need with thinner, paraffin remover, and need heat to wash, therefore increase face cost, and increased the operation number of times.Developed the device that to give down-hole oil heating in recent years for this reason, thereby can viscosity reduction, wash wax, a kind of is the heater that cable is arranged, another kind is the heater that is coated with wall, and these two kinds of heaters constitute by ground control section and underground heating part, on the ground control section structure more complicated, the three-phase power electricity (380V) that adopt more, output safety is very poor, and the compensating circuit complexity of exporting in the circuit structure, the cost height.

The purpose of this utility model provides a kind of down-hole oil heating control apparatus, and safety is good, and is simple in structure, and cost is low.

The purpose of this utility model is achieved in that it comprises power supply circuits, rectification circuit, filter circuit, compensating circuit and control circuit, its technical scheme main points are: compensating circuit is connected and composed by three resistance, three electric capacity, its input termination power supply circuits output, the center-side of its output termination filter circuit.

The utility model has the advantages that: safe and reliable, adopt compensating circuit simple, cost is low.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model logic diagram of circuit.

Fig. 2 is the utility model circuit theory diagrams.

See Fig. 1,2, concrete structure is as follows: power supply circuits are connected and composed by air switch ZK and rectifier transformer JB; Three resistance R 1, R2, R3 and three capacitor C 1, C2, C3 connect and compose the dihedral compensating circuit, the transformer JB output of the input termination power supply circuits of compensating circuit, the center-side of the output termination filter circuit of compensating circuit, filter circuit is connected and composed by six capacitor C 4-C9 and six resistance R 4-R9; Connect into rectification circuit by six diode D1-D6, the output of its input termination transformer JB, its output termination load.Control circuit is is mainly connected and composed by A.C. contactor ZJ1, ZJ2, CJ and over current relay RJ1, air switch ZK1, temperature controller TDW, exhaust fan M1, M2 and button etc., is conventional connection, summary.

Operating principle: at first the 380V three phase mains is by air switch ZK and A.C. contactor CJ1, CJ2, CJ3 supplies with three-phase rectifier transformer JB, the 36V voltage of output becomes the 36V DC current after by the rectification circuit that is made of diode D1-D6, because consider the loss of transformer JB and the civilian wave system number of output direct current, between transformer JB and rectification circuit, connect the dihedral compensating circuit, to improve the power factor of transformer JB, simultaneously again at the output of rectification circuit, added rc filter circuit, to reduce the civilian wave system number of direct current output, complexity and raising practical function in order to reduce circuit are connected compensating circuit and filter circuit with the form of feeding back.The course of work of control circuit is; When pressing starting button AN2, the coil of A.C. contactor ZJ1 is by constant close contact RJ1 and self holding contact ZJ1A adhesive, at this moment the constant open contact ZJ1B adhesive of ZJ1, thereby cause of the constant close contact WDJ adhesive of the coil of A.C. contactor ZJ2 by temperature controller, cause so again ZJ2 constant open contact ZJ2A adhesive, main ac contactor coil CJ is by the ZJ2A conducting of adhesive, thereby causes constant open contact CJ1, CJ2, the CJ3 adhesive of CJ, three-phase electricity is sent into transformer JB, finishes transmission process.

Claims

1, a kind of down-hole oil heating control apparatus, it comprises power supply circuits, rectification circuit, filter circuit, compensating circuit and control circuit, it is characterized in that: compensating circuit is connected and composed by three resistance, three electric capacity, its input termination power supply circuits output, the center-side of its output termination filter circuit.