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An oil well cable tension detection device

A tension detection and cable technology, which is applied in tension measurement and other directions, can solve the problems affecting the detection accuracy of the tension detection device and internal pressure changes, so as to avoid external dirt and corrosion and improve the tension detection accuracy

Active Publication Date: 2020-05-22
HEILONGJIANG LANDE ULTRASONIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the downhole cable tension detection, the tension sensor is often placed in the airtight protective sleeve in order to avoid the corrosion of the tension sensor. However, the traditional oil well cable tension detection device changes the length of the tension sensor due to the change of tension, which will cause the volume ratio of the internal chamber of the device. , which leads to changes in internal pressure, which greatly affects the detection accuracy of the tension detection device under the action of negative pressure inside the device

Method used

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  • An oil well cable tension detection device
  • An oil well cable tension detection device
  • An oil well cable tension detection device

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0030] Combine below Figure 1-9 Describe this embodiment, an oil well cable tension detection device, including a female pin body 1, a female pin body fixing screw sleeve 2, a female pin body connecting oil sleeve 3, a piston shaft 4, a piston 5, a tension sensor casing 6, Tension sensor 7, exhaust sleeve 8, male pin body connection sleeve 10, male pin body 11 and male pin body fixing screw sleeve 12, the female pin body 1 is connected to the The female pin body is connected to the left end of the oil sleeve 3, and the left end of the piston shaft 4 is connected to the female pin body to connect the oil sleeve 3 through thread fit, and the piston 5 is slidably connected to the piston shaft 4, and the piston 5 is located on the piston shaft. 4 and the female pin body connecting oil sleeve 3, the left end of the tension sensor outer casing 6 is connected to the right end inside the female pin body connecting oil sleeve 3 through a limit screw, and the left end of the tension se...

specific Embodiment approach 2

[0032] Combine below Figure 1-9 This embodiment will be described. This embodiment will further describe Embodiment 1. The right end of the exhaust sleeve 8 is fixedly connected to the internal wiring body 9, and the exhaust sleeve 8 and the male pin body are connected to the inside of the sleeve 10 through the internal wiring body 9. Oil is isolated.

specific Embodiment approach 3

[0034] Combine below Figure 1-9This embodiment will be described. This embodiment will further describe the first embodiment. The internal wiring body 9 is inserted into the right end of the exhaust sleeve 8, and the right end of the exhaust sleeve 8 is inserted with an extrusion sleeve 13. The right end of the exhaust sleeve 8 is connected to the compression assembly 14 by screws, the left end of the extrusion sleeve 13 is in contact with the inner wiring body 9, the right end of the extrusion sleeve 13 is in contact with the left end surface of the compression assembly 14, and the compression assembly 14 is connected by the screw. Tighten the screw so that the compression assembly 14 squeezes the extrusion sleeve 13, and the inner wiring body 9 is compressed by the extrusion sleeve 13 to realize the fixing of the inner wiring body 9, which is convenient for connection and has a better sealing effect.

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Abstract

The invention relates to a tension detector, especially to an oil-well cable tension detector. The detector comprises a female pin, a female pin fixing thread sleeve, a female pin connecting oil sleeve, a piston shaft, a piston, a tension sensor sheath, a tension sensor, an exhaust sleeve, a male pin connecting sleeve, a male pin and a male pin fixing thread sleeve; the left end of the piston shaft is in threaded cooperative connection to the female pin connecting oil sleeve; the piston is in sliding connection to the piston shaft; the piston is positioned between the piston shaft and the female pin; the left end of the tension sensor sheath is connected to the internal right end of the female pin connecting oil sleeve via a limiting screw; the left end of the tension sensor is in threadedconnection to the piston shaft; the right end of the tension sensor is in threaded connection to the tension sensor sleeve; and the right end of the tension sensor sleeve is in threaded cooperative connection to the exhaust sleeve. Thus, the internal pressure in the detector can be balanced, and the tension detection precision is improved.

Description

technical field [0001] The invention relates to a tension detection device, in particular to an oil well cable tension detection device. Background technique [0002] Tension detectors can be divided into strain gauge type and micro-displacement type according to their principles, and the value of the change will be proportional to the magnitude of the tension. In the downhole cable tension detection, the tension sensor is often placed in the airtight protective sleeve in order to avoid the corrosion of the tension sensor. However, the traditional oil well cable tension detection device changes the length of the tension sensor due to the change of tension, which will cause the volume ratio of the internal chamber of the device. , resulting in changes in internal pressure, which greatly affects the detection accuracy of the tension detection device under the action of negative pressure inside the device. Contents of the invention [0003] The purpose of the present inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/04
CPCG01L5/04
Inventor 赵宪忠张修全任建军于家琦迟毅
Owner HEILONGJIANG LANDE ULTRASONIC TECH CO LTD
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