RU2498015C2 - Device to measure speed and direction of soil motion relative to underground pipeline - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: device to measure speed and direction of soil motion relative to an underground pipeline comprises a metering telescopic two-link lever with a sensor of elongation, a hinged joint, a unit of movements count. A hinged joint and a metering telescopic two-link lever are placed into a protective flexible case, besides, the metering sliding two-link lever in the case is fixed with the help of spring centralisers, and also in the metering telescopic two-link lever there is a unit of unlocking of a cord of elongation of the metering telescopic two-link lever.

EFFECT: provision of long-term fault-free operation of a device and convenience of its service without labour intensive earth works.

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Description

The invention relates to the transport of hydrocarbons in the oil and gas industry and can be used in the operation of pipelines located in places with possible landslide phenomena, to take timely measures to protect them from destruction during the movement of soil masses caused by the violation of the weight balance as a result of seasonal thawing, saturation soil or other reasons.

A device is known for measuring the direction and speed of movement of the soil relative to an underground pipeline, comprising a housing, a measuring arm connected to it by means of a spherical hinge with a measuring tip at one end protruding from the housing, a two-coordinate movement reference unit located inside the housing and interacting with the other end of the measuring arm . [1] (Patent RU 2205919, class C2 7 E02D 1/100, G01B 5/00, op. 20.07.2000).

The disadvantage of this device is the small range and low accuracy of measuring displacements during operation of the device in cohesive (clay) soils. Part of the measuring arm with the plates is in the ground, which, when displaced, resists the angular movements of the arm. With an increase in the angle of inclination of the lever, the effective area of the plates, which is affected by soil pressure, decreases, which also reduces the force that rotates the lever. As the slope increases, the force stretching the lever increases, and the pressure force of the lever on the ground decreases accordingly. Therefore, at a certain angle of inclination of the resistance to rotation of the lever, the forces that rotate it will be balanced, and, accordingly, obtaining information about the movement of the soil will become impossible.

The closest in technical essence and the achieved effect to the claimed device is a device for measuring the speed and direction of movement of the soil relative to the underground pipeline, the measuring node of which is a measuring telescopic two-link lever with an extension sensor, a hinge, a moving reference unit. [2] (Patent RU 2338031 C2).

The disadvantage of this device is the direct contact of the measuring telescopic two-link lever and hinge with the ground, which can lead to contamination and corrosion of their rubbing surfaces and affect their mobility. In addition, the maintenance of the device is difficult. Since when replacing its individual elements, it is necessary to remove the entire device from the ground, which is often impossible in hard rocky soils.

The objective of the present invention is to provide long-term uptime of the device and the convenience of its maintenance without laborious excavation.

This problem is solved by using a flexible protective case in the device for measuring the speed and direction of soil motion relative to the underground pipeline, in which the measuring telescopic two-link lever and hinge are placed, as well as centralizers and the sensor cable extension unit undocking unit.

The essence of the present invention lies in the fact that in the inventive device for measuring the speed and direction of movement of the soil relative to the underground pipeline, consisting of a measuring telescopic two-link lever with an extension sensor, a hinge, a motion reference unit, according to the invention, the hinge and a measuring telescopic two-link lever are placed in a protective a flexible case, and the measuring telescopic two-link lever in the case is fixed using spring centralizers, as well as in the meter first two-tier telescopic arm elongation sensor embedded decoupling the measuring cable assembly of two-arm telescopic.

Figure 1 presents the inventive device for measuring the speed and direction of movement of the soil relative to the underground pipeline.

The device comprises a measuring telescopic two-link lever 1, a hinge 2, a reference unit of displacements 3, an extension sensor for a measuring telescopic two-link lever 4, a cable 5, a flexible case 6, centralizers 7, an undocking unit for a cable for an extension sensor for a measuring telescopic lever 8. The flexible case 6 is corrugated a pipe, one end of which is fixed on a hinged base 9 installed on the pipeline 10, and the second end, after installing the device on the object, is attached to the housing 3. In the flexible case 6 there is a measuring telescopic two-link arm 1. Centralizers 7 are used to correctly position the flexible case 6 along the axis of the measuring telescopic two-link arm 1 and to prevent the walls of the flexible case 6 from being crushed. Thus, the flexible case 6 protects all the moving elements of the measuring telescopic two-link lever 1 from hit of soil. When the soil acts on the device, the measuring telescopic two-link lever 1 tilts and lengthens, while the flexible case 6 also tilts and stretches due to its corrugated structure.

To remove the entire device to the surface, it is necessary to disconnect the upper end of the flexible case 6 from the body of the displacement reference unit 3 and remove the displacement reference unit 3 together with link 11 of the measuring telescopic two-link arm 1. In this case, the cable 5 of the extension sensor 4 is disconnected from link 12 of the measuring telescopic two-link arm 1 due to the undocking unit 8, which has spring clips 13, which disengage from link 12 of the measuring telescopic two-link lever 1 when applying about limited force on the cable 5. The device is assembled in the reverse order: the displacement reference unit 3 together with the link 11 of the measuring telescopic two-link lever 1, the cable 5 and the undocking node 8 is installed in the flexible case 6 and the link 12 of the measuring telescopic two-link lever 1, while undocking 8 is pushed by link 11 into link 12 of the measuring telescopic two-link lever 1 until the spring clips 13 are triggered. The upper end of the flexible case 6 is fixed to the housing reference movement 3, the device for measuring the speed and direction of movement relative to the soil underground pipeline ready for operation.

Information sources

1. Patent RU 2205919, cl. C2 7 E02D 1/100, G01B 5/00, on. 07/20/2000

2. Patent RU 2338031 C2.

Claims (1)

A device for measuring the speed and direction of movement of the soil relative to the underground pipeline, consisting of a measuring telescopic two-link lever with an extension sensor, a hinge, a movement reference unit, characterized in that the hinge and a measuring telescopic two-link lever are placed in a protective flexible case, the measuring telescopic two-link lever in the case is fixed with spring centralizers, and a cable undocking unit is also integrated in the measuring telescopic two-link lever ka extension of two-meter telescopic arm.

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