RU144267U1 - ULTRASONIC DEFECTOSCOPE SENSOR CARRIER - Google Patents

Abstract

1. The carrier of the ultrasonic flaw detector sensors is made of at least one section, which includes a central rod on which the head and tail forks are placed, to the flanges of which centering cuffs are attached, between which are placed a polyurethane head cone, a polyurethane tail cone and a set of rings with ultrasonic sensors located on it, while the outer diameter of the carrier of the sensors of the ultrasonic flaw detector has a size not exceeding the size of the maximum allowable narrowing of the pipe gadfly. 2. The ultrasonic flaw detector sensor carrier according to claim 1, characterized in that it has two groups of bushings, which are arranged in order: bushings with smooth holes and bushings with threaded holes. 3. The carrier of ultrasonic flaw detector sensors according to claim 1, characterized in that the front ring of the ring set is fixed to the head cone by fixing screws that are installed in the threaded holes of the head cone through sleeves with smooth holes, while the following ring set rings are fixed by fixing screws through sleeves with smooth holes in the threaded holes of the bushings of the previous rings, while the mounting screws are staggered. 4. The ultrasonic flaw detector sensor carrier according to claim 1, characterized in that the ultrasonic sensors are mounted on the rings and secured by covers with screws, while the ring design of the ultrasonic flaw detector sensor carrier can be of several versions: for installing ultrasonic sensors in an inclined and radial positions. Ultrasonic flaw detector carrier

Description

The claimed utility model relates to devices for monitoring the technical condition of main oil pipelines, oil product pipelines by passing an ultrasonic flaw detector with ultrasonic sensors mounted on it.

A device is known that is used for in-line inspection of long pipelines by non-destructive methods, patent RU 2204113 C1, the sensor carrier of which includes a plurality of kinematically interconnected sensor holders capable of experiencing elastic squeezing in the radial direction from the axis of the carrier. The main disadvantage of this device is that the carriers of the sensors are made in the form of elastic elements kinematically connected to each other by the wall of the pipeline, which leads to measurement errors.

The closest prototype is a device for in-line ultrasonic inspection of pipelines of small diameter, patent RU 38948 U1, where the housing of the sensor carrier is made in the form of a single rigid body. The main disadvantage of this device is the possibility of using this carrier design only on pipelines of small diameter and restrictions when passing through the flaw detector of bends of pipelines of small radius.

The technical result of the utility model is to increase the accuracy of diagnostic information due to a more compact arrangement of ultrasonic sensors on the sensor carrier, ensuring that the flaw detector can pass through small-radius pipeline turns.

The technical result is obtained due to the fact that the carrier of the ultrasonic flaw detector sensors is made of at least one section. The section includes a central rod on which the head and tail forks are placed. Centering cuffs are attached to the flanges of the head and tail forks, between which are placed a polyurethane head cone, a polyurethane tail cone, a polyurethane tail cone and a set of rings. The set of rings is a cylinder with a central hole and with spiral grooves on the outer cylindrical surface. In the recesses of the spiral grooves are placed ultrasonic sensors in the bushings and are fixed by covers with screws. The outer diameter of the carrier of the ultrasonic flaw detector sensors does not exceed the size of the maximum permissible narrowing of the pipeline.

A set of rings have two groups of bushings arranged uniformly in alternating order along the circumference: bushings with smooth holes and bushings with threaded holes. Fastening of the first ring of the ring set to the head cone is carried out by fixing screws passing through sleeves with smooth holes and wrapped in threaded holes of the head cone. The fastening of the following rings of the set of rings to the previous rings of the set of rings is carried out by fixing screws passing through the holes of the bushings with smooth holes and wrapped in bushings with threaded holes of the previous rings. Thus, the mounting screws are staggered, which allows the set of rings of the ultrasonic flaw detector sensor carrier to elastically deform when the carrier moves the turns of small radius pipelines of the ultrasonic flaw detector, which eliminates the jamming of the flaw detector. Centering of the carrier of the ultrasonic flaw detector sensors and ensuring the necessary indentation of the sensors from the inner surface of the pipeline is carried out using polyurethane cuffs.

The design of the set of rings in which the ultrasonic sensors are installed can be of several versions, which extends the diagnostic capabilities of the ultrasonic flaw detector: with an inclined arrangement, the ultrasonic flaw detector acquires the function of detecting pipeline cracks, with a radial arrangement of sensors on the set of carrier rings, the ultrasonic flaw detector receives the function of measuring the thickness of the pipeline wall. Placing ultrasonic sensors on a non-deformable carrier of sensors of an ultrasonic flaw detector provides the most accurate and compact arrangement of ultrasonic sensors inside the pipeline, which improves the quality of diagnostic information, and also provides measurement of the cross section of the pipeline with high accuracy, which allows the diagnostic device to perform the function of a profiler in addition to the flaw detector. To ensure the passage of the turns of the small radius pipeline by the ultrasonic flaw detector, the carrier of the ultrasonic flaw detector sensors can be made in the form of two sections articulated to each other by means of a universal joint. The sensor carrier of an ultrasonic flaw detector consists of unified and interchangeable parts and assemblies, which makes it possible to change the length and number of sections of the sensor carrier depending on operating conditions.

Figure 1 shows the carrier of the sensors of an ultrasonic flaw detector for pipelines of small diameter;

Figure 2 shows a General view of a section of a carrier of sensors of an ultrasonic flaw detector;

Figure 3 shows the mounting node of the ultrasonic sensor on the ring of the set of rings of the carrier of the sensors of the ultrasonic flaw detector.

In figure 1, the following notation:

1 - section of the carrier of the sensors of an ultrasonic flaw detector;

2 - gimbal connection.

In figure 2, the following notation:

3 - the central rod;

4 - head plug;

5 - tail fork;

6 - polyurethane cuff;

7 - ultrasonic sensor;

8 - polyurethane head cone;

9 - polyurethane tail cone;

10 - a set of carrier rings of ultrasonic flaw detector sensors;

11 - sleeve with smooth holes;

12 - sleeve with threaded holes;

13 - fixing screw.

In figure 3, the following notation:

7 - ultrasonic sensor;

14 - a ring of a set of rings of a carrier of sensors of an ultrasonic flaw detector;

15 - sleeve for placement of an ultrasonic sensor;

16 - cover;

17 - screw for mounting an ultrasonic sensor;

18 - cable with connector.

The claimed carrier of sensors of an ultrasonic flaw detector consists of at least one section of the carrier of sensors of an ultrasonic flaw detector 1 (Fig. 1). Between each other, the sections of the sensor carrier of the ultrasonic flaw detector 1 (Fig. 1) are connected by means of a cardan joint 2 (Fig. 1). The sensor carrier 1 (FIG. 1) includes a central shaft 3 (FIG. 2), on which a head fork 4 (FIG. 2) and a tail fork 5 (FIG. 2) are placed. Polyurethane cuffs 6 are attached to the flanges of the head and tail forks (Fig. 2). Between the polyurethane cuffs 6 (figure 2) are a polyurethane head cone 8 (figure 2) and a polyurethane tail cone 9 (figure 2). Between the cones 8 and 9 (figure 2) placed a set of rings 10 (figure 2). In the recesses of the spiral grooves of the set of rings 10 (FIG. 2), ultrasonic sensors 7 (FIG. 2) are placed uniformly in the angular and axial directions with the required pitch. Ring 14 (FIG. 3) of the ultrasonic flaw detector sensors carrier has two groups of bushings arranged in an alternating order: bushings with smooth holes 11 (FIG. 2) and bushings with threaded holes 12 (FIG. 2). The fastening of the first front semi-rigid ring 14 (Fig. 3) to the polyurethane head cone 8 (Fig. 2) is carried out by fixing screws 13 (Fig. 2) passing through the holes of the bushings with smooth holes 11 (Fig. 2). The fastening of the following to the previous rings 14 (Fig. 3) is carried out by fixing screws 13 (Fig. 2) passing through the holes of the bushings with smooth holes 11 (Fig. 2) and wrapped in bushings with threaded holes 12 (Fig. 2). The ultrasonic sensor 7 (figure 3) is placed on the ring 14 (figure 3) in the sleeve 15 (figure 3) and is fixed by the cover 16 (figure 3) by means of screws 17 (figure 3). To the inner end of the sensor fits the cable with connector 18 (figure 3).

Claims (6)

1. The carrier of the ultrasonic flaw detector sensors is made of at least one section, which includes a central rod on which the head and tail forks are placed, to the flanges of which centering cuffs are attached, between which are placed a polyurethane head cone, a polyurethane tail cone and a set of rings with ultrasonic sensors located on it, while the outer diameter of the carrier of the sensors of the ultrasonic flaw detector has a size not exceeding the size of the maximum allowable narrowing of the pipe gadfly. 2. The carrier of ultrasonic flaw detector sensors according to claim 1, characterized in that it has two groups of bushings, which are arranged in order: bushings with smooth holes and bushings with threaded holes. 3. The carrier of ultrasonic flaw detector sensors according to claim 1, characterized in that the front ring of the ring set is fixed to the head cone by fixing screws that are installed in the threaded holes of the head cone through sleeves with smooth holes, while the following ring set rings are fixed by fixing screws through the sleeves with smooth holes in the threaded holes of the bushings of the previous rings, while the mounting screws are staggered. 4. The carrier of sensors of an ultrasonic flaw detector according to claim 1, characterized in that the ultrasonic sensors are placed on the rings and fixed with caps by means of screws, while the ring design of the carrier of the sensors of an ultrasonic flaw detector can be of several versions: for installing ultrasonic sensors in an inclined and radial positions. 5. The carrier of ultrasonic flaw detector sensors according to claim 1, characterized in that the carrier of ultrasonic sensors can be made in the form of two sections articulated to each other by means of a universal joint. 6. The carrier of the ultrasonic flaw detector sensors according to claim 1, characterized in that it consists of standardized and interchangeable parts and assemblies.