Probe assembly for pipeline flaw detection

Abstract

The utility model relates to a pipeline flaw detection probe assembly which comprises a shell, a plurality of detection probes are arranged on the shell, an installation cavity used for installing an underwater rotating motor and a sealing cavity used for installing a cable are arranged in the shell, and the sealing cavity is isolated from the outer side of the shell. A water sealing connecting piece used for connecting the cable in the sealing cavity and the cable in the mounting cavity is further arranged in the shell, the water sealing connecting piece is arranged on a partition plate between the sealing cavity and the mounting cavity, one end of the water sealing connecting piece is located in the sealing cavity, the other end of the water sealing connecting piece is located in the mounting cavity, and the underwater rotating motor is arranged in the mounting cavity; and a rotating part of the underwater rotating motor is connected with the shell. According to the probe assembly for pipeline flaw detection, the plurality of detection probes are arranged on the surface of the shell, and the shell can rotate and is large in coverage range.

Description

Technical Field

[0001] The utility model relates to a probe assembly, in particular to a probe assembly for pipeline flaw detection. Background Art

[0002] Currently, devices for flaw detection in underwater pipe wells include ultrasonic flaw detection devices. Chinese patent publication number "CN104181236A" discloses an underwater high-pressure ultrasonic probe, in which a probe chip, a pressure-isolating delay plate and other components are arranged in the probe housing. The probe chip is isolated from external pressure by the pressure-isolating delay plate in the probe housing.

[0003] The underwater high-pressure ultrasonic probe of this structure has a very small range of single detection because it only contains a single probe. At the same time, its probe chip is located at the end of the probe shell, which makes it inconvenient to connect to the rotary drive device to achieve circumferential scanning, further reducing its scanning coverage.

[0004] To achieve this, multiple probes must be added to the existing probe assembly to improve its scanning coverage. However, this increases the size of the probes and their connections, making installation of the probes and their accessories challenging. Furthermore, driving the probe assembly to rotate and further improve its coverage is a pressing technical challenge. Therefore, improvements to the existing probe assembly are necessary to address these issues. Summary of the Invention

[0005] In order to solve the above technical problems, the utility model provides a probe assembly for pipeline flaw detection with multiple rotatable probes and a wide coverage area.

[0006] The probe assembly for pipeline flaw detection of the present invention includes a shell, a plurality of detection probes are provided on the shell, an installation cavity for installing an underwater rotating motor and a sealing cavity for installing cables are provided in the shell, the sealing cavity is isolated from the outside of the shell, and a water-tight connector for connecting the cables in the sealing cavity and the cables in the installation cavity is further provided in the shell, the water-tight connector is provided on a partition between the sealing cavity and the installation cavity, one end of the water-tight connector is located in the sealing cavity, and the other end of the water-tight connector is located in the installation cavity, the underwater rotating motor is provided in the installation cavity, and the rotating part of the underwater rotating motor is connected to the shell.

[0007] The advantages of the pipeline flaw detection probe assembly are that a plurality of detection probes are provided on its shell, a sealed cavity for installing cables and an installation cavity for installing underwater rotating motors are provided in the shell, and the provision of a plurality of detection probes enables the pipeline flaw detection probe assembly to detect a wide range of workpieces at one time. The provision of the sealed cavity facilitates the connection of accessories such as cables, and can also prevent the influence of external water sources on components such as cables and detection probes. The provision of a water-tight connector realizes the connection between the cables in the sealed cavity and the cables in the installation cavity, thereby realizing the connection between a plurality of detection probes and external equipment, ensuring the sealing of the sealed cavity, and preventing the influence of external water sources on cables and detection probes; the provision of the underwater rotating motor realizes the rotational drive of the shell, so that the shell can drive a plurality of detection probes to rotate, thereby improving the scanning coverage range of the probe assembly. Compared with the existing probe assembly, its structure is simple, reliable, and has high flaw detection efficiency.

[0008] Furthermore, in the probe assembly for pipeline flaw detection of the present invention, the shell is cylindrical, and a sealing cover for sealing the sealing cavity is provided at the front end of the shell.

[0009] The provision of the sealing cover realizes the sealing function of the sealing cavity, and also facilitates the operator's maintenance operations on the cables and accessories in the sealing cavity.

[0010] Furthermore, in the probe assembly for pipeline flaw detection of the present invention, a plurality of mounting holes adapted to the detection probes are opened on the surface of the shell, the detection probes are fixedly arranged at the mounting holes, and the mounting holes are communicated with the sealing cavity.

[0011] The arrangement of the mounting holes facilitates the positioning and installation of the mounting holes by the operator.

[0012] Furthermore, in the probe assembly for pipeline flaw detection of the present invention, a plurality of key slots are provided on the inner wall of the installation cavity, and a plurality of connecting keys adapted to the key slots are provided on the outer wall of the underwater rotating motor.

[0013] The arrangement of the keyway and the connecting key enables the positioning and installation of the underwater rotating motor, so that the underwater rotating motor can drive the housing and several detection probes on the housing to rotate, thereby achieving scanning.

[0014] Furthermore, in the probe assembly for pipeline flaw detection of the present invention, a positioning groove is provided on the end face of the shell, and a connecting flange at the top end of the fixing portion of the underwater rotating motor is arranged in the positioning groove.

[0015] The provision of the positioning groove further facilitates the operator to position and fix the underwater rotating motor.

[0016] Furthermore, in the probe assembly for pipeline flaw detection of the present invention, a fixing ring is provided above the connecting flange, the outer edge of the fixing ring is fixed to the end face of the shell by bolts, and the inner edge of the fixing ring is located on the surface of the connecting flange of the underwater rotating motor.

[0017] The provision of the fixing ring further strengthens the connection between the underwater rotating motor and the housing to prevent the underwater rotating motor from falling out of the installation cavity.

[0018] Furthermore, in the probe assembly for pipeline flaw detection of the present invention, the fixed shaft of the underwater rotating motor is a hollow shaft, the hollow shaft is located in the middle hole of the fixed part of the underwater rotating motor, and the outer end of the hollow shaft is provided with a connector for connecting to external underwater equipment, and the middle hole of the connector is connected to the middle hole of the hollow shaft.

[0019] The setting of the hollow shaft facilitates the connection between the cables in the installation cavity and the underwater equipment.

[0020] Furthermore, in the probe assembly for pipeline flaw detection of the present invention, the bottom end of the connector is provided with a slot connected to the fixing part of the underwater rotating motor, and the fixing part of the underwater rotating motor is provided with a pin corresponding to the slot.

[0021] The arrangement of the pin and the slot realizes the connection between the connector and the fixing part of the underwater rotating motor.

[0022] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it in accordance with the contents of the specification, the following embodiments of the present invention are described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the front view of the probe assembly for pipeline flaw detection.

[0024] Figure 2 It is a cross-sectional view of the probe assembly for pipeline flaw detection.

[0025] Figure 3 It is a longitudinal cross-sectional view of the probe assembly for pipeline flaw detection.

[0026] Figure 4 yes Figure 3 A partial enlarged view of part A in the middle.

[0027] Figure 5 It is a three-dimensional diagram of the shell.

[0028] Figure 6 It is a three-dimensional diagram of an underwater rotating motor.

[0029] Figure 7 This is a three-dimensional diagram of the fixed shaft and connector.

[0030] Figure 8 It is a three-dimensional diagram of the probe assembly for pipeline flaw detection.

[0031] In the figure, the shell 1, the detection probe 2, the installation cavity 3, the sealing cavity 4, the water-sealed connector 5, the partition 6, the rotating part 7, the sealing cover 8, the installation hole 9, the through hole 10, the keyway 11, the connecting key 12, the positioning groove 13, the protrusion 14, the connecting flange 15, the fixing ring 16, the bearing 17, the fixing part 18, the fixing shaft 19, the connector 20, the slot 21, and the pin 22. DETAILED DESCRIPTION

[0032] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] Example 1: See Figures 1 to 8 The probe assembly for pipeline flaw detection in this embodiment includes a shell 1, on which are provided a plurality of detection probes 2. The shell is provided with an installation cavity 3 for installing an underwater rotating motor and a sealed cavity 4 for installing a cable. The sealed cavity is isolated from the outside of the shell. The shell is further provided with a water-tight connector 5 for connecting the cable in the sealed cavity and the cable in the installation cavity. The water-tight connector is provided on a partition 6 between the sealed cavity and the installation cavity. One end of the water-tight connector is located in the sealed cavity, and the other end of the water-tight connector is located in the installation cavity. The underwater rotating motor is provided in the installation cavity, and the rotating part 7 of the underwater rotating motor is connected to the shell.

[0034] The advantages of the pipeline flaw detection probe assembly are that a plurality of detection probes are provided on its shell, a sealed cavity for installing cables and an installation cavity for installing underwater rotating motors are provided in the shell, and the provision of a plurality of detection probes enables the pipeline flaw detection probe assembly to detect a wide range of workpieces at one time. The provision of the sealed cavity facilitates the connection of accessories such as cables, and can also prevent the influence of external water sources on components such as cables and detection probes. The provision of a water-tight connector realizes the connection between the cables in the sealed cavity and the cables in the installation cavity, thereby realizing the connection between a plurality of detection probes and external equipment, ensuring the sealing of the sealed cavity, and preventing the influence of external water sources on cables and detection probes; the provision of the underwater rotating motor realizes the rotational drive of the shell, so that the shell can drive a plurality of detection probes to rotate, thereby improving the scanning coverage range of the probe assembly. Compared with the existing probe assembly, its structure is simple, reliable, and has high flaw detection efficiency.

[0035] In this embodiment, the shell is cylindrical, and its front end is a sealing cover 8 for sealing the sealing cavity. One end of the installation cavity is isolated from the sealing cavity by a partition, and the other end is open for installing the underwater rotating motor and realizing connection with external underwater equipment.

[0036] The detection probe is an immersion probe. In this embodiment, the surface of the shell is provided with several mounting grooves or mounting holes 9 adapted to the detection probe. The detection probe is fixedly arranged at the mounting hole. The periphery of the detection probe can be sealed with the shell by sealant, sealing ring, etc. Several cables connecting the detection probe are arranged in the sealed cavity.

[0037] A perforation 10 is provided on the partition between the sealing cavity and the installation cavity. The above-mentioned water-sealing connector is installed at the perforation, one end of which is located in the sealing cavity and the other end is located in the installation cavity. Sealing rings, sealants and other components can be arranged between the water-sealing connector and the partition to isolate the sealing cavity from the external environment and prevent external water sources from entering the sealing cavity.

[0038] The cable in the sealed cavity can be connected to one end of the water-sealed connector through an adapted connector, and the other end of the water-sealed connector is connected to the cable in the installation cavity through a corresponding connector, and then connected to the external device.

[0039] The underwater rotating motor is a waterproof motor, which is arranged in an installation cavity, and its rotating part is connected to the shell. In this embodiment, a plurality of key slots 11 are provided on the inner wall of the installation cavity, and a plurality of connecting keys 12 adapted to the key slots are provided on the outer wall of the underwater rotating motor. During installation, the connecting keys of the rotating part of the underwater rotating motor are aligned with the corresponding key slots, and then the operator pushes the rotating part into the predetermined position in the installation cavity and fastens it to the shell with bolts.

[0040] The end face of the housing is provided with a positioning groove 13. In this embodiment, the bottom surface of the positioning groove is located on the top surface of several protrusions 14 that form a keyway. A connecting flange 15 at the top of the underwater rotating motor's mounting portion is seated in this positioning groove and secured to the housing via bolts. A retaining ring 16 can also be positioned above the connecting flange to further strengthen the connection between the underwater rotating motor and the housing. Specifically, the outer edge of the retaining ring is bolted to the end face of the housing, while its inner edge rests on the surface of the underwater rotating motor's connecting flange, thereby preventing the underwater rotating motor from falling out of the mounting cavity.

[0041] The fixed portion of the underwater rotary motor is connected to the rotating portion via bearings 17. During operation, the motor's fixed portion 18 connects to the end of an external underwater device. The motor's rotating portion, via several connecting keys on its surface, drives the housing, which in turn rotates several detection probes on the housing's surface. During testing, the motor can drive the housing to rotate half a turn forward and reverse, respectively, to fully scan the pipeline.

[0042] In order to facilitate the connection between the cables in the installation cavity and the external equipment, the fixed shaft 19 of the underwater rotating motor is a hollow shaft. The hollow shaft is located in the middle hole of the fixed part of the underwater rotating motor. The outer end of the hollow shaft is provided with a connector 20 for connecting to the external underwater equipment. The middle hole of the connector is connected to the middle hole of the hollow shaft. The cable in the installation cavity is input from one end of the hollow shaft, enters the connector through the other end of the hollow shaft, and is output to the corresponding equipment by the connector.

[0043] The bottom end of the connector is provided with a slot 21 connected to the fixing part of the underwater rotating motor, and the fixing part of the underwater rotating motor is provided with a pin 22. During installation, the hollow shaft enters the inner hole of the rotating part from one end and extends from the other end of the hollow shaft until the bottom end of the connector contacts the rotating part of the underwater rotating motor, and the pin is inserted into the slot, thereby realizing the connection between the hollow shaft and the fixing part of the underwater rotating motor.

[0044] During flaw detection, the probe assembly is connected to the end of the underwater equipment through a connector and is pushed into a predetermined position inside the underwater pipeline by the underwater equipment. Then, the underwater rotating motor drives the shell and several probes on it to rotate forward and reverse to scan the inner wall of the pipeline for flaw detection. The detection signal of the detection probe is transmitted to the control center of the underwater equipment through a cable, and is processed and analyzed accordingly by the control center or external equipment to realize flaw detection of the inner wall of the pipeline.

[0045] Preferably, the shell is cylindrical, and a sealing cover for sealing the sealing cavity is provided at the front end of the shell.

[0046] The provision of the sealing cover realizes the sealing function of the sealing cavity, and also facilitates the operator's maintenance operations on the cables and accessories in the sealing cavity.

[0047] Preferably, a plurality of mounting holes adapted to the detection probes are opened on the surface of the shell, the detection probes are fixedly arranged at the mounting holes, and the mounting holes are communicated with the sealed cavity.

[0048] The arrangement of the mounting holes facilitates the positioning and installation of the mounting holes by the operator.

[0049] Preferably, a plurality of key slots are provided on the inner wall of the installation cavity, and a plurality of connecting keys adapted to the key slots are provided on the outer wall of the underwater rotating motor.

[0050] The key slot and the connecting key are provided to realize the positioning and installation of the underwater rotating motor, so that the underwater rotating motor can drive the housing and several detection probes on the housing to rotate, thereby realizing scanning.

[0051] Preferably, a positioning groove is provided on the end surface of the shell, and a connecting flange at the top end of the fixing part of the underwater rotating motor is arranged in the positioning groove.

[0052] The provision of the positioning groove further facilitates the operator to position and fix the underwater rotating motor.

[0053] Preferably, a fixing ring is provided above the connecting flange, the outer edge of the fixing ring is fixed to the end face of the housing by bolts, and the inner edge of the fixing ring is located on the surface of the connecting flange of the underwater rotating motor.

[0054] The provision of the fixing ring further strengthens the connection between the underwater rotating motor and the housing to prevent the underwater rotating motor from falling out of the installation cavity.

[0055] Preferably, the fixed shaft of the underwater rotating motor is a hollow shaft, which is located in the middle hole of the fixed part of the underwater rotating motor. The outer end of the hollow shaft is provided with a connector for connecting to external underwater equipment, and the middle hole of the connector is connected to the middle hole of the hollow shaft.

[0056] The setting of the hollow shaft facilitates the connection between the cables in the installation cavity and the underwater equipment.

[0057] Preferably, the bottom end of the connector is provided with a slot connected to the fixing portion of the underwater rotating motor, and the fixing portion of the underwater rotating motor is provided with a pin corresponding to the slot.

[0058] The arrangement of the pin and the slot realizes the connection between the connector and the fixing part of the underwater rotating motor.

[0059] The above description is only a preferred embodiment of the present invention, which is used to assist those skilled in the art to implement the corresponding technical solution, and is not used to limit the scope of protection of the present invention, which is defined by the appended claims. It should be pointed out that for those of ordinary skill in the art, a number of equivalent improvements and variations can be made based on the technical solution of the present invention, and these improvements and variations should also be regarded as within the scope of protection of the present invention. At the same time, it should be understood that although this specification is described in accordance with the above-mentioned embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions of each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A probe assembly for pipeline flaw detection, comprising a housing (1), characterized in that: The shell is provided with a plurality of detection probes (2), and the shell is provided with an installation cavity (3) for installing an underwater rotating motor and a sealing cavity (4) for installing a cable. The sealing cavity is isolated from the outside of the shell. The shell is also provided with a water-sealed connector (5) for connecting the cable in the sealing cavity and the cable in the installation cavity. The water-sealed connector is provided on a partition (6) between the sealing cavity and the installation cavity. One end of the water-sealed connector is located in the sealing cavity, and the other end of the water-sealed connector is located in the installation cavity. The underwater rotating motor is provided in the installation cavity, and the rotating part (7) of the underwater rotating motor is connected to the shell.

2. The pipeline flaw detection probe assembly according to claim 1, characterized in that: The shell is cylindrical, and a sealing cover for sealing the sealing cavity is provided at the front end of the shell.

3. The pipeline flaw detection probe assembly according to claim 1, characterized in that: The surface of the shell is provided with a plurality of mounting holes adapted to the detection probes. The detection probes are fixedly arranged at the mounting holes, and the mounting holes are communicated with the sealing cavity.

4. The pipeline flaw detection probe assembly according to claim 1, characterized in that: A plurality of key slots are provided on the inner wall of the installation cavity, and a plurality of connecting keys adapted to the key slots are provided on the outer wall of the underwater rotating motor.

5. The pipeline flaw detection probe assembly according to claim 4, characterized in that: A positioning groove is provided on the end surface of the shell, and a connecting flange at the top end of the fixing part of the underwater rotating motor is arranged in the positioning groove.

6. The pipeline flaw detection probe assembly according to claim 5, characterized in that: A fixing ring is also provided above the connecting flange, the outer edge of the fixing ring is fixed to the end face of the shell by bolts, and the inner edge of the fixing ring is located on the surface of the connecting flange of the underwater rotating motor.

7. The pipeline flaw detection probe assembly according to claim 1, characterized in that: The fixed shaft of the underwater rotating motor is a hollow shaft, which is located in the middle hole of the fixed part of the underwater rotating motor. The outer end of the hollow shaft is provided with a connector for connecting to external underwater equipment, and the middle hole of the connector is connected to the middle hole of the hollow shaft.

8. The pipeline flaw detection probe assembly according to claim 7, characterized in that: The bottom end of the connector is provided with a slot connected to the fixing part of the underwater rotating motor, and the fixing part of the underwater rotating motor is provided with a pin corresponding to the slot.

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