CN113898820B

CN113898820B - Rotary towing cable detector and use method

Info

Publication number: CN113898820B
Application number: CN202111148469.6A
Authority: CN
Inventors: 陈立涛; 贺永方; 梁胡格吉乐; 沈景托; 高潮; 王鹏; 张宁
Original assignee: Tianjin Precision Instrument And Precision Measurement Technology Co ltd
Current assignee: Tianjin Precision Instrument And Precision Measurement Technology Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2023-03-14
Anticipated expiration: 2041-09-26
Also published as: CN113898820A

Abstract

The invention discloses a rotary streamer detector and a method of use, the detector comprising: the system comprises a functional unit, an umbilical cable, a slip ring and a tail motor, wherein the functional unit is used for completing detection, and the umbilical cable is used for providing a dragging force; the slip ring is used for ensuring normal power supply and data transmission functions when the functional unit and the umbilical cable rotate relatively, and the tail motor drives the functional unit to rotate relatively with the umbilical cable. The using method comprises the following steps: when the detector moves forwards, dragging the umbilical cable into a pipeline to be detected; when the detector is recovered, the pull cable device provides a pulling force for the umbilical cable to the outside of the pipeline to be detected, and the umbilical cable is always lapped on the edge of the lower part of the inner cylinder of the receiving and transmitting cylinder under the action of the tension; the tail motor rotates clockwise and anticlockwise alternately to drive the umbilical cable to rotate clockwise and anticlockwise alternately relative to the functional unit, so that the umbilical cable is recovered in a spiral motion mode. The invention solves the problem that the umbilical cable is seriously abraded at a pit position when in use.

Description

Rotary towing cable detector and use method

Technical Field

The invention relates to the field of in-pipeline detection, in particular to a rotary type towing cable detector and a using method thereof.

Background

The application of in-pipeline detection equipment in the field of pipe network detection is increasingly wide, the in-streamer detector is one of a plurality of internal detectors, however, the in-streamer detector has more problems to be solved in the transceiving process, and one outstanding problem is the abrasion of the umbilical cable in use. The cause of wear is simply that such internal detectors often lack the power to retract, and when retraction is required, the surface unit pulls the umbilical out of the duct, which is then in tension in the duct and overlaps each corner of the duct where friction can occur, thereby causing wear. Engineering experience shows that an important corner causing abrasion is actually the position of an inlet of a detector into a pipeline, the angle of the area is mostly a right angle, the abrasion is serious, and other corners after entering the pipeline are often large and the abrasion is small. To reduce wear at the inlet, a transceiver drum is typically installed at the inlet, and a conventional transceiver drum generally includes: the lower edge of the inner cylinder can be smooth, the outer cylinder is arranged on a prefabricated inlet flange of a pipeline to be detected, the inner cylinder protects and sends the detector into the pipeline, the lower edge of the inner cylinder is kept below the vertex of the pipeline, an umbilical cable is always put on the lower edge of the inner cylinder when being recovered, and because the lower edge is processed to be smooth, the friction of the umbilical cable at the position cannot be too large, the umbilical cable is improved greatly compared with the friction directly at the position of a pipeline tee joint, but the abrasion loss accumulated for a long time is still considerable at the lower outer edge.

The specific abrasion reason is that under the action of pulling force, the umbilical cable can be tightened to be seriously deformed at the lower edge of the inner cylinder, and the umbilical cable is expressed as follows: before the strangulation, namely the cable in the inner cylinder, is thinned, after the strangulation, namely the cable in the area of 0.1cm to 2cm outside the inner cylinder, is rolled to be thick, and the lower edge is in a state of being sunk into the umbilical, and the umbilical is damaged in the sunk pit.

Disclosure of Invention

The invention provides a rotary type towrope detector and a using method thereof, which solve the problem that an umbilical cable is seriously abraded at a pit position when in use and are described in detail as follows:

in a first aspect, a rotating streamer detector, the detector comprising: a functional unit, an umbilical cable, a slip ring and a tail motor,

the functional unit is used for completing detection, and the umbilical cable is used for providing dragging force;

the slip ring is used for ensuring normal power supply and data transmission functions when the functional unit and the umbilical cable rotate relatively, and the tail motor drives the umbilical cable to rotate relatively with the functional unit.

Wherein the slip ring comprises: the slip ring tail end and the slip ring front end; the tail motor includes: a motor rotor and a motor stator,

the slip ring tail end is connected with the umbilical cable, the slip ring front end is connected with the functional unit, the motor rotor is connected with the slip ring tail end, and the motor stator is connected with the functional unit.

In a second aspect, a method of using a rotary streamer detector, the method comprising the steps of:

when the detector advances forwards, dragging the umbilical cable into a pipeline to be detected;

when the detector is recovered, the pull cable device provides a pulling force for the umbilical cable to the outside of the pipeline to be detected, and the umbilical cable is always lapped on the edge of the lower part of the inner cylinder of the receiving and transmitting cylinder under the action of the tension;

the tail motor rotates clockwise and anticlockwise alternately to drive the umbilical cable to rotate clockwise and anticlockwise alternately relative to the functional unit, so that the umbilical cable is recovered in a spiral motion mode.

The technical scheme provided by the invention has the beneficial effects that: the spiral type recovery umbilical cable is adopted to effectively reduce the depth of the 'pit', so that the abrasion degree of the umbilical cable is reduced, the recovery pulling force is reduced, and the load of a cable pulling device and other supporting structures which are responsible for recovery is reduced.

Drawings

FIG. 1 is a schematic view of a "pit";

where the circle shows where the umbilical is "pitted".

FIG. 2 is a schematic view of the detector in a state in which it is recovered;

FIG. 3 is a schematic diagram of the assembled relationship of the components of the detector.

In the drawings, the components represented by the respective reference numerals are listed below:

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in further detail below.

Example 1

A rotary streamer detector, see fig. 1 to 3, the detector comprising: a functional unit 5 and an umbilical 3, the functional unit 5 being responsible for performing core tasks of the detection, such as: sensing data acquisition, sensing data processing, sensing data transmission, advancing power supply and the like; the umbilical cable 3 is responsible for supplying power to the detector, sensing data transmission, and providing a towing force for recovery.

Wherein, rotation type streamer detector includes: a slip ring 7 and a tail motor 6, the slip ring 7 comprising: a slip ring tail end 7-1 and a slip ring front end 7-2;

the slip ring tail end 7-1 is connected with the umbilical cable 3, the slip ring front end 7-2 is connected with the functional unit 5, the motor rotor 6-2 is connected with the slip ring tail end 7-1, and the motor stator 6-1 is connected with the functional unit 5;

the slip ring 7 (i.e. the photoelectric slip ring) is responsible for ensuring normal power supply and data transmission functions when the functional unit 5 and the umbilical cable 3 rotate relatively, and the tail motor 6 drives the umbilical cable 3 to rotate relatively with the functional unit 5.

The design of the functional unit 5 is well known to those skilled in the art, and the embodiment of the present invention will not be described herein.

In conclusion, the detector designed according to the method can rotate the umbilical cable, and meanwhile, power supply and data transmission are not affected.

Example 2

A method of using a rotary streamer detector, the method being applied to the detector of embodiment 1, see fig. 1 to 3, the method comprising the steps of:

s01: the detector moves forwards in a pipe network, and pulls the umbilical cable 3 into a pipeline 4 to be detected;

s02: the recovery detector, the cable pulling device (external connection) provides the pulling force for the umbilical cable 3 to the outside of the pipeline 4 to be detected, and the umbilical cable 3 is always put on the lower edge of the inner cylinder 1 of the receiving and dispatching cylinder under the action of tension;

s03: the tail motor 6 rotates clockwise and anticlockwise alternately to drive the umbilical cable 3 to rotate clockwise and anticlockwise alternately relative to the functional unit 5, so that the umbilical cable 3 is recovered in a spiral motion mode on the whole.

In summary, working with the above procedure, the umbilical can be recovered in a spiral motion, and damage to the umbilical in the "pit" is reduced.

Example 3

The scheme of example 1 is further described below in conjunction with fig. 1-3, and is described in detail below:

first, the preparation of the rotating streamer detector before operation, and the conditions under which the various components occur, are described:

when the construction is started, the outer cylinder 2 of the receiving and dispatching cylinder is arranged on a prefabricated inlet flange of a pipeline 4 to be tested; the inner cylinder 1 is pushed into the pipeline 4 to be tested through external force, and when the lower part of the inner cylinder 1 comprises the flexible bent pipe 1-3, the edge of the lower part of the flexible bent pipe 1-3 is kept below the vertex of the pipeline 4 to be tested; when the detection is started, the detector passes through the inner cylinder 1 and enters the pipeline 4 to be detected through external force or the power of the detector, and the umbilical cable 3 is dragged by the detector and also passes through the inner cylinder 1 and enters the pipeline 4 to be detected.

When the umbilical cable 3 needs to be recovered, a cable pulling device is erected above the receiving and sending cylinder and pulls the umbilical cable 3 to the outside of the pipeline 4 to be tested, so that the umbilical cable 3 passes through the inner cylinder 1 and continuously exits from the pipeline 4 to be tested to be under the tension effect, and when the lower part of the inner cylinder 1 comprises the flexible bent pipe 1-3, the umbilical cable 3 is always lapped on the lower edge of the flexible bent pipe 1-3; in the vicinity of the lower edge, the umbilical 3 is severely deformed by being pulled out, as it appears before the pull-in mark, i.e., the umbilical 3 in the inner cylinder 1 becomes thin, and after the pull-in mark, i.e., the umbilical 3 in the 0.1cm to 2cm region outside the inner cylinder 1 is rolled up to be thick, exhibiting a state in which the lower edge is "caught" in the umbilical 3, in which "catching pit" the umbilical 3 is worn out.

Example 4

the assembly relationship of the parts of the rotary type streamer detector and the use method are described as follows:

a rotary streamer detector, comprising: the functional unit 5 is responsible for completing core tasks of detection, such as sensing data acquisition, sensing data processing, information transmission, advancing power supply and the like, and the umbilical cable 3 is responsible for supplying power to the detector, transmitting sensing data and providing dragging force during recovery; the rotary streamer detector further comprising: the slip ring 7 and the tail motor 6, the tail end 7-1 of the slip ring is connected with the umbilical cable 3, the front end 7-2 of the slip ring is connected with the functional unit 5, and the motor rotor 6-2 and the motor stator 6-1 are respectively connected with the tail end 7-1 of the slip ring and the functional unit 5; the umbilical cable 3 is connected into the slip ring tail end 7-1, the slip ring wire harness 8 is connected into the functional unit 5, and the slip ring 7 is responsible for ensuring normal power supply and data transmission functions when the functional unit 5 and the umbilical cable 3 rotate relatively; the tail motor 6 drives the functional unit 5 to rotate relative to the umbilical cable 3. When 3 umbilical cables are drawn by the cable drawing device to the outer tractive of 4 pipelines that await measuring, afterbody motor 6 clockwise, anticlockwise rotation in turn drive umbilical cables 3 clockwise, anticlockwise rotation in turn, umbilical cables 3 generally presents spiral motion like this, makes the lower part border of inner tube 1 not directly meet the uphill section of "crater" in the impact dead ahead, but to the motion of side the place ahead, walks around the highest uphill section of "crater" to a certain extent to reduce frictional force, reduce the wearing and tearing volume.

In the embodiment of the present invention, except for the specific description of the model of each device, the model of other devices is not limited as long as the device can perform the above functions.

Those skilled in the art will appreciate that the drawings are only schematic illustrations of preferred embodiments, and the above-described embodiments of the present invention are merely provided for description and do not represent the merits of the embodiments.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A rotary streamer detector, the detector comprising: a functional unit, an umbilical cable, a slip ring and a tail motor,

the slip ring is used for ensuring normal power supply and data transmission functions when the functional unit and the umbilical cable rotate relatively, and the tail motor drives the umbilical cable to rotate relatively to the functional unit;

2. A method of using a rotary streamer detector as claimed in claim 1, the method comprising the steps of:

when the detector is recovered, the cable pulling device provides pulling force for the umbilical cable to the outside of the pipeline to be detected, and the umbilical cable is always put on the edge of the lower part of the inner cylinder of the receiving and transmitting cylinder under the action of tension;