CN-224218542-U - High-power insulating heating cable of thermal-sensitive heat conduction type

Abstract

The utility model belongs to the technical field of heating cables, and provides a temperature-sensing heat-conducting type high-power insulating heating cable which comprises three-phase power lines, an insulating layer, an inner protection metal layer, a temperature-sensing test line, a heat conducting line and a corrosion-resistant outer metal sleeve, wherein the three-phase power lines are arranged in parallel, the insulating layer is arranged on the outer side of the three-phase power lines, the inner protection metal layer is arranged on the outer side of the insulating layer, the temperature-sensing test line is arranged on the outer side of the metal layer, the heat conducting line and the temperature-sensing test line are circumferentially arranged along the outer wall of the inner protection metal layer, and the corrosion-resistant outer metal sleeve is arranged on the outer sides of the temperature-sensing test line and the heat conducting line. According to the utility model, the temperature sensing test wire and the three-phase power wire are combined to form the temperature sensing heat-conducting type high-power insulating heating cable, and the temperature sensing wire and the heating cable are simultaneously put into the well, so that whether the heating cable is abnormal or not can be intuitively judged through the temperature sensing test wire, the accuracy of the heating cable in use is improved, and meanwhile, the operation is facilitated.

Inventors

• SUN PENGYU
• CAI RUMING
• WEI HAIBING
• Zhu Dacong
• ZHOU GANG
• DING JIAN
• FENG MINGXING
• ZHU XU

Assignees

• 宝胜科技创新股份有限公司

Dates

Publication Date

20260508

Application Date

20250522

Claims (8)

1. 1. A temperature-sensitive heat-conducting type high-power insulated heating cable, comprising: three-phase power lines are arranged in parallel; the insulating layer is arranged on the outer side of the three-phase power line; the inner protection metal layer is arranged on the outer side of the insulating layer; the temperature sensing test line is arranged on the outer side of the metal layer; The heat conducting wire is arranged at the outer side of the metal layer, and the heat conducting wire and the temperature sensing test wire are circumferentially arranged along the outer wall of the inner protection metal layer; And the corrosion-resistant outer metal sleeve is arranged on the outer sides of the temperature sensing test wire and the heat conducting wire.
2. 2. The high-power insulated heating cable according to claim 1, wherein the three-phase power line comprises a copper wire and a heating alloy wire which are respectively arranged at two ends along the length direction of the cable, one end of the heating alloy wire is connected with the copper wire, and the other end of the heating alloy wire is intersected at one point and connected with each other.
3. 3. The high-power insulated heating cable of claim 2, wherein when the number of the temperature sensing test wires is greater than one, the temperature sensing test wires are arranged at intervals.
4. 4. A temperature-sensitive heat-conducting high-power insulated heating cable according to claim 3, wherein the temperature-sensitive test wire and the heat-conducting wire have the same diameter.
5. 5. The temperature-sensitive heat-conducting high-power insulated heating cable according to claim 1, wherein the insulating layer is formed by compacting inorganic mineral insulating powder.
6. 6. The high-power insulated heating cable of claim 1, wherein the inner protective metal layer is copper or copper alloy.
7. 7. The temperature-sensitive heat-conducting high-power insulated heating cable according to claim 1, wherein the heat-conducting wire is a galvanized alloy wire.
8. 8. The temperature-sensitive heat-conducting high-power insulating heating cable according to claim 1, wherein the corrosion-resistant outer metal sleeve is formed by longitudinally wrapping and welding nichrome.

Description

High-power insulating heating cable of thermal-sensitive heat conduction type Technical Field The utility model relates to the technical field of heating cables, in particular to a temperature-sensing heat-conducting high-power insulating heating cable. Background The current petroleum industry invests a great deal of energy and materials for thick oil exploitation, the traditional thick oil exploitation utilizes natural gas, coal and the like to collect water vapor for thick oil dilution, but the mode causes a great deal of material waste on one hand, the economic consumption accounts for more than 70% of the total resources of petroleum exploitation, and on the other hand, the combustion forms a great deal of waste gas and pollution, which is unfavorable for the current green and environment-friendly production guideline, so the electricity is used for replacing steam to become an important improvement scheme for thick oil exploitation, the current petroleum industry invests a great deal of energy and material for thick oil exploitation, and oil field companies need to inject more than 2000 ten thousand tons of steam into underground every year for steam injection exploitation of thick oil, thus consuming about 16 hundred million cubic meters of natural gas and generating a great deal of carbon emission. Along with the landing of the 'double carbon' target in China, the exploitation mode of high energy consumption and high carbon emission of thick oil thermal recovery must be transformed. In recent two years, oil field companies are environment-friendly and transformed around thick oil, actively explore a new mode of replacing gas with electricity, and adopt electric energy to gradually replace the mode of producing steam by a traditional gas boiler, so that carbon emission is reduced to the greatest extent. The adoption of the heating cable is a simple method, and is particularly used in the thermal recovery process of thick oil, super thick oil, high-wax-content oil gas and shale oil. They can be used to increase crude oil recovery ratio, ensure stable oil and gas production, and increase oil and gas productivity. At present, the heating cable is basically single heated, especially the position which has small using area and is easy to be perceived by human body, but in an oil well, the underground condition is complex, the underground condition can reach more than 2000m from the ground, and the temperature change cannot be directly perceived, so that the cable is always dry-burned, and the service life and the service condition of the product are influenced. In order to solve the current situation, the temperature sensing wire is arranged outside the heating cable, namely the temperature sensing wire and the heating cable are respectively put into the well, so that the temperature sensing wire can detect the underground temperature when in use, but because the underground environment is complex and the temperature sensing wire is a certain distance away from the heating cable, the obtained detection data has a certain difference from the actual working condition, namely the accuracy is poor. In addition, because the temperature sensing cable is placed at different positions, the placement position of the temperature sensing cable can be close to the wall of the well or the temperature sensing cable is coated by petroleum, so that the condition of the heating cable cannot be accurately measured, and the heating cable is in dry burning failure. Furthermore, the existing heating cable cannot collect temperature data on site, cannot transmit temperature control data to the central control platform in real time, and brings certain difficulty to digital management, so that when the heating cable is regularly overhauled, a worker is difficult to intuitively judge whether the heating cable is abnormal or not through the temperature sensing cable, and accordingly the damaged cable is difficult to replace in time, great adverse effects are generated on monitoring of temperature abnormality, and certain potential safety hazards exist. Even if a plurality of temperature sensing cables are manually inspected or checked in daily life, the labor intensity is high, the operation is not facilitated, and the manufacturing cost is high. Disclosure of utility model Aiming at the defects in the prior art, the utility model provides a temperature-sensing heat-conducting type high-power insulating heating cable, which aims to solve the problem that the monitoring effect is poor due to the fact that the current temperature-sensing cable and the heating cable are respectively put into a well. The utility model provides a temperature-sensing heat-conducting type high-power insulating heating cable, which comprises: three-phase power lines are arranged in parallel; the insulating layer is arranged on the outer side of the three-phase power line; the inner protection metal layer is arranged on the outer side of the insulating lay