Power self-control intermediate frequency electric heating oil extraction device

Abstract

The utility model provides a power self-control medium-frequency electric heating oil extraction device, which relates to the technical field of oil extraction devices and comprises a power self-control medium-frequency power supply, a live wire, a null line, a hollow rod wellhead sealer and a shielding signal line, and the output end of the power self-control medium-frequency power supply is connected with an armored electric heater through the live wire and the null line. The armored electric heater is installed inside the hollow sucker rod, a hollow sucker rod screwed plug is arranged at the tail end of the hollow sucker rod, and the hollow sucker rod is connected to a piston of the oil well pump. By arranging a power self-control medium-frequency power supply, an armored electric heater, a temperature transmitter, a frequency conversion circuit, a medium-frequency transformer, a temperature control instrument and a PLC touch screen control system, the oil outlet temperature of a wellhead is sensed, a heating device is automatically controlled to work according to the oil outlet temperature and a numerical value set by a user, the use of electric energy is reduced to the maximum extent, and the service life of the heating device is prolonged. The oil extraction production is safe, efficient and intelligent, so that the crude oil extraction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production devices, in particular to a power self-controlled medium-frequency electric heating oil production device. Background Art

[0002] With the popularization and application of medium frequency electric heating oil production equipment, the production of thin oil wells to remove wax and reduce viscosity of heavy oil wells has been guaranteed to a certain extent. In view of the current requirements for reducing costs and increasing efficiency of oil wells, users have adopted a cautious use strategy for medium frequency electric heating in order to reduce the expenditure on oil well heating electricity without reducing production. In order to meet this demand of users, it is necessary to upgrade and transform medium frequency electric heating. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical scheme: a power-controlled medium-frequency electric heating oil production device, including a power-controlled medium-frequency power supply, a live wire, a neutral wire, a hollow rod wellhead sealer and a shielded signal wire, the output end of the power-controlled medium-frequency power supply is connected to an armored electric heater through a live wire and a neutral wire, the armored electric heater is installed inside a hollow sucker rod, a hollow sucker rod wire plug is arranged at the end of the hollow sucker rod, the hollow sucker rod is connected to the piston of an oil pump, a temperature transmitter is arranged at the output end of the power-controlled medium-frequency power supply, a frequency conversion circuit is arranged inside the power-controlled medium-frequency power supply, a medium-frequency transformer is arranged inside the power-controlled medium-frequency power supply, a temperature control instrument is arranged on the surface of the power-controlled medium-frequency power supply, and a PLC touch screen control system is arranged inside the power-controlled medium-frequency power supply.

[0005] Preferably, the hollow rod wellhead sealer is slidably connected to the hollow sucker rod. Here, the design of the hollow rod wellhead sealer improves the sealing effect of the connection between the hollow sucker rod and the wellhead.

[0006] Preferably, one end of the shielded signal line is connected to the output end of the power self-controlled medium frequency power supply, and the other end is connected to the input end of the temperature transmitter. Here, the design of the temperature transmitter facilitates the detection of the wellhead oil temperature and transmits it to the temperature control instrument through the shielded signal line, and sends the signal to the PLC touch screen control system.

[0007] Preferably, one end of the live wire and the neutral wire is connected to the input end of the armored electric heater, and the other end is connected to the output end of the medium frequency transformer. Here, the armored electric heater converts electrical energy into thermal energy under the action of the medium frequency current, providing thermal energy for the crude oil in the oil well.

[0008] Compared with the prior art, the advantages and positive effects of the utility model are:

[0009] In the utility model, the power automatic control medium frequency power supply, the armored electric heater, the temperature transmitter, the frequency conversion circuit, the medium frequency transformer, the temperature control instrument and the PLC touch screen control system are provided to sense the oil outlet temperature of the wellhead, and automatically control the operation of the heating device according to the oil outlet temperature and the value set by the user, thereby minimizing the use of electric energy, thereby making oil production safe, efficient and intelligent, thereby reducing the cost of crude oil extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model proposes a schematic diagram of the installation of a power automatic control medium frequency electric heating oil production device;

[0011] Figure 2 The utility model provides an electrical schematic diagram of a power self-controlled medium-frequency electric heating oil production device.

[0012] Legend:

[0013] 1. Power automatic control medium frequency power supply; 2. Live wire; 3. Neutral wire; 4. Hollow sucker rod; 5. Hollow rod wellhead sealer; 6. Armored electric heater; 7. Oil pump; 8. Hollow sucker rod plug; 9. Temperature transmitter; 10. Shielded signal line; 11. Frequency conversion circuit; 12. Medium frequency transformer; 13. Temperature control instrument; 14. PLC touch screen control system. DETAILED DESCRIPTION

[0014] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0015] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0016] Example

[0017] See also Figure 1-2The utility model provides a technical solution: a power automatic control medium frequency electric heating oil production device, including a power automatic control medium frequency power supply 1, a live wire 2, a neutral wire 3, a hollow rod wellhead sealer 5 and a shielded signal line 10, the output end of the power automatic control medium frequency power supply 1 is connected to an armored electric heater 6 through the live wire 2 and the neutral wire 3, the armored electric heater 6 is installed inside a hollow sucker rod 4, a hollow sucker rod wire plug 8 is provided at the end of the hollow sucker rod 4, the hollow sucker rod 4 is connected to the piston of a pump 7, the hollow rod wellhead sealer 5 is slidably connected to the hollow sucker rod 4, and the design of the hollow rod wellhead sealer 5 improves the sealing effect of the connection between the hollow sucker rod 4 and the wellhead.

[0018] See also Figure 1-2 A temperature transmitter 9 is provided at the output end of the power automatic control medium frequency power supply 1, one end of the shielded signal line 10 is connected to the output end of the power automatic control medium frequency power supply 1, and the other end is connected to the input end of the temperature transmitter 9. The design of the temperature transmitter 9 facilitates the detection of the wellhead oil outlet temperature and transmits it to the temperature control instrument 13 through the shielded signal line 10, and sends the signal to the PLC touch screen control system 14. A frequency conversion circuit 11 is provided inside the power automatic control medium frequency power supply 1, and a medium frequency transformer 12 is provided inside the power automatic control medium frequency power supply 1. One end of the live wire 2 and the neutral wire 3 are connected to the input end of the armored electric heater 6, and the other end is connected to the output end of the medium frequency transformer 12. The armored electric heater 6 converts electrical energy into thermal energy under the action of the medium frequency current to provide thermal energy for the crude oil in the oil well. A temperature control instrument 13 is provided on the surface of the power automatic control medium frequency power supply 1, and a PLC touch screen control system is provided inside the power automatic control medium frequency power supply 1.

[0019] Working principle: On the basis of the original medium frequency electric heating, a temperature transmitter 9 and a PLC touch screen intelligent control system are added. When the oil outlet temperature at the wellhead is higher than the upper limit, the medium frequency electric heating oil production device stops heating; when the oil outlet temperature at the wellhead is lower than the lower limit, the medium frequency electric heating oil production device starts working. The power automatic control medium frequency power supply 1, armored electric heater 6, temperature transmitter 9, frequency conversion circuit 11, medium frequency transformer 12, temperature control instrument 13 and PLC touch screen control system 14 sense the oil outlet temperature at the wellhead, and automatically control the heating device to work according to the oil outlet temperature and the value set by the user, so as to minimize the use of electric energy, thereby making oil production safe, efficient and intelligent, thereby reducing the cost of crude oil extraction.

[0020] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A power self-controlled medium frequency electric heating oil production device, comprising a power self-controlled medium frequency power supply (1), a live wire (2), a neutral wire (3), a hollow rod wellhead sealer (5) and a shielded signal wire (10), characterized in that: The output end of the power automatic control medium frequency power supply (1) is connected to an armored electric heater (6) via a live wire (2) and a neutral wire (3); the armored electric heater (6) is installed inside a hollow sucker rod (4); a hollow sucker rod plug (8) is provided at the end of the hollow sucker rod (4); the hollow sucker rod (4) is connected to the piston of an oil pump (7); a temperature transmitter (9) is provided at the output end of the power automatic control medium frequency power supply (1); a frequency conversion circuit (11) is provided inside the power automatic control medium frequency power supply (1); a medium frequency transformer (12) is provided inside the power automatic control medium frequency power supply (1); a temperature control instrument (13) is provided on the surface of the power automatic control medium frequency power supply (1); and a PLC touch screen control system is provided inside the power automatic control medium frequency power supply (1).

2. The power automatic controlled medium frequency electric heating oil production device according to claim 1 is characterized in that: The hollow rod wellhead sealer (5) is slidably connected to the hollow sucker rod (4).

3. The power automatic controlled medium frequency electric heating oil production device according to claim 1 is characterized in that: One end of the shielded signal line (10) is connected to the output end of the power self-controlled medium frequency power supply (1), and the other end is connected to the input end of the temperature transmitter (9).

4. The power automatic control medium frequency electric heating oil production device according to claim 1 is characterized in that: One end of the live wire (2) and the neutral wire (3) is connected to the input end of the armored electric heater (6), and the other end is connected to the output end of the medium frequency transformer (12).

Images