Test block for variable coupling medium of annular phased array ultrasonic probe

Abstract

The utility model provides a test block for a variable coupling medium of an annular phased array ultrasonic probe, and belongs to the technical field of pipeline ultrasonic internal detection. A cabin is arranged in the middle of the test block, the state of capturing signals by an ultrasonic probe under different media can be simulated by injecting a coupling medium, and probe debugging under the medium condition is completed. An arc-shaped contact surface is arranged at the bottom of the test block, and the test block is suitable for testing the annular phased array ultrasonic probe. Meanwhile, the end cover of the test block can be replaced, and different pipeline wall thicknesses can be simulated by replacing end covers with different thicknesses. An operator injects coupling media such as water or crude oil into the test block, the test block is attached to the surface of an annular probe of an ultrasonic inner detector, and ultrasonic testing under different media can be achieved. Before detection, the test block is used for testing in a corresponding medium environment, and a better signal can be obtained, so that whether a probe works normally or not is judged.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline ultrasonic internal detection technical field especially relates to a kind of test block for annular phased array ultrasonic probe variable coupling medium. BACKGROUND

[0002] Before ultrasonic detector carries out submarine pipeline test, the performance of probe needs to be detected, to verify whether the ultrasonic wave emitted by probe is complete and effective. Because the ultrasonic signal emitted by probe can only be captured and tested after reflection, a test block is needed as the medium for ultrasonic reflection, which is equivalent to the function of submarine pipeline wall, and the thickness of test block is equivalent to the thickness of submarine pipeline wall.

[0003] At present, the test block of initial design is cuboid structure, although it can capture and test the ultrasonic wave emitted by probe, but since the probe used by ultrasonic equipment is array probe, the face of this probe is arc-shaped, and the matching face of test block contacting with probe is rectangle, this structure makes test block and probe test contact in point-to-point contact mode, in order to completely test all probes, equipment engineer needs to move test block back and forth when testing probe, but since the shape of matching face of test block and probe contacting with each other is different, this point-to-point contact mode will have great instability, and slight carelessness will cause missing waveform, thereby affecting the judgment of equipment engineers on the availability of probe of ultrasonic equipment. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a kind of test block for annular phased array ultrasonic probe variable coupling medium, before pipeline ultrasonic internal detector implements internal detection operation, not only can realize the debugging state of annular phased array ultrasonic probe under different coupling medium, but also does not need to move test block back and forth when testing probe function, which can effectively reduce the workload of operating personnel.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a kind of test block for annular phased array ultrasonic probe variable coupling medium, including cabin, end cover and screw, the lower end face of cabin contacting with annular phased array ultrasonic probe is provided with fan-shaped arc surface, the upper end of cabin can be detachably installed with end cover, the sidewall of cabin is provided with liquid injection port, meanwhile, detachably installed with screw on liquid injection port.

[0006] Further, screw and liquid injection port are threadedly connected, and sealing ring is further installed between screw and liquid injection port.

[0007] Further, the sealing ring is O-shaped rubber ring.

[0008] Further, the cabin body is provided with an opening at the top end, and a liquid storage cabin is arranged in the cabin body, and the opening at the top end of the cabin body and a liquid injection port on the side wall are communicated with the liquid storage cabin.

[0009] Further, the end cover is of an integral structure, and a flange is arranged at the lower end of the end cover; when the end cover and the cabin body are installed together, the flange can extend into the liquid storage cabin of the cabin body, and meanwhile, the flange is in butt joint with the opening at the top end of the cabin body and can seal the opening at the top end of the cabin body.

[0010] Further, the liquid storage cabin can be filled with different coupling media to simulate different medium working conditions between the pipe wall and the ultrasonic probe.

[0011] Further, the end cover is provided with different thickness specifications.

[0012] Compared with the prior art, the test block for the annular phased array ultrasonic probe variable coupling medium has the following advantages: the annular phased array ultrasonic probe is debugged through the test block, and the receiving signal of the ultrasonic detector under different coupling media can be obtained. Before the detection is implemented, the test under the corresponding medium environment is carried out through the test block, and better ultrasonic signals can be obtained, which not only effectively reduces the workload, but also avoids the situation that the detector cannot detect signals and the data analysis cannot be carried out due to weak signals.

[0013] (1) The overall structure of the test block is a fan shape, and an arc-shaped contact surface is arranged on the side in contact with the annular phased array ultrasonic probe, so that the contact between the test block and the probe is changed from the original point-to-point contact mode to a face-to-face contact mode, which not only greatly reduces the situation that the waveform cannot be collected, but also does not need to move the test block back and forth when testing the function of the probe, and only needs to press the fan-shaped test block on the probe, thereby effectively reducing the workload of the operating personnel.

[0014] (2) The liquid storage cabin can inject different coupling media (water, crude oil, etc.), and can simulate the detection in the submarine pipeline under different medium working conditions.

[0015] (3) The end cover is detachably installed, and the end cover is provided with multiple different thickness specifications, and different thickness end covers can be replaced to simulate different pipe wall thicknesses, thereby effectively improving the practicability and applicability. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form a part of the present application, are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The present application is not limited by the accompanying drawings.

[0017] Figure 1The front view of the test block for the variable coupling medium of the annular phased array ultrasonic probe is shown in the embodiment of the utility model.

[0018] Figure 2 The Figure 1 A-A sectional view is shown in the embodiment of the utility model.

[0019] Figure 3 The right view of the test block for the variable coupling medium of the annular phased array ultrasonic probe is shown in the embodiment of the utility model.

[0020] Figure 4 The bottom view of the test block for the variable coupling medium of the annular phased array ultrasonic probe is shown in the embodiment of the utility model.

[0021] Figure 5 The front view of the cabin is shown in the embodiment of the utility model.

[0022] Figure 6 The Figure 4 C-C sectional view is shown in the embodiment of the utility model.

[0023] Figure 7 The bottom view of the cabin is shown in the embodiment of the utility model.

[0024] Figure 8 The front view of the end cover is shown in the embodiment of the utility model.

[0025] Figure 9 The right view of the end cover is shown in the embodiment of the utility model.

[0026] Figure 10 The bottom view of the end cover is shown in the embodiment of the utility model.

[0027] Figure 11 The working process schematic diagram of the test block is shown in the embodiment of the utility model.

[0028] Explanation of reference signs:

[0029] 1, cabin; 11, liquid injection port; 12, fan-shaped curved surface; 13, liquid storage cabin; 2, end cover; 21, flange; 3, sealing ring; 4, screw; 5, annular phased array ultrasonic probe. DETAILED DESCRIPTION

[0030] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0031] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] For example, Figures 1-11As shown, the utility model is a kind of test block for annular phased array ultrasonic probe variable coupling medium, test block is provided with the liquid storage cabin 13 of different coupling medium replaceable, it can be applicable to the arc contact surface of annular phased array ultrasonic probe and the test block end cover 2 with certain thickness;Different coupling medium can be filled in liquid storage cabin 13, so as to be able to simulate the different medium working condition between pipe wall and ultrasonic probe.Arc contact surface can be attached with annular probe, so that test block and annular phased array ultrasonic probe present face-to-face contact mode, not only greatly reduce the situation of waveform unable to collect, simultaneously, when testing probe function, test block also does not need to move back and forth, only need to press test block on probe, reduce the workload of operating personnel.Sea pipe wall thickness is generally 8.7mm-15.9mm, the test block end cover 2 described in the application has certain thickness, can replace the pipe wall thickness of sea pipe.

[0033] Specifically, the test block includes a cabin body 1, an end cover 2 and a screw 4, the upper end of the cabin body 1 is detachably installed with the end cover 2, the sidewall of the cabin body 1 is provided with a liquid injection port 11, and the liquid injection port 11 is detachably installed with the screw 4. The cabin body 1 is a storage part of coupling medium, and the material is usually resin. The cabin body 1 is provided with an opening at the top end, and the middle part of the cabin body 1 is a hollow structure. The hollow structure is a liquid storage cabin 13, which can store different coupling media such as water and crude oil, and is used for simulating different medium working conditions between the pipe wall and the ultrasonic probe. The opening at the top end of the cabin body 1 and the liquid injection port 11 on the sidewall are respectively communicated with the liquid storage cabin 13. When the staff needs to add coupling agent, only needs to unscrew the screw 4, then adjusts the posture of the test block so that the opening direction of the liquid injection port 11 is upward, and then adds the coupling agent through the liquid injection port 11. When the addition of the coupling agent is completed, the screw 4 is reinstalled on the liquid injection port 11. During each test, according to the test needs, only one kind of coupling medium is placed in the liquid storage cabin 13. When the coupling medium needs to be replaced, first, the screw 4 and the O-shaped sealing ring 3 are detached, the screw 4 is cleaned and placed in a dry and clean place together with the sealing ring 3. Then, the coupling medium in the liquid storage cabin 13 is poured into a container prepared in advance through the liquid injection port 11. After pouring, if there is residual coupling medium in the liquid storage cabin 13, the liquid storage cabin 13 needs to be cleaned with reagent and water until there is no residual coupling medium in the liquid storage cabin 13. Finally, the new coupling medium is injected into the liquid storage cabin 13 through the liquid injection port 11, and the sealing ring 3 and the screw 4 are installed, so that the replacement of the coupling medium is completed. When the coupling medium is added, the test block needs to be placed vertically, and the liquid injection port 11 faces upward. When the coupling medium overflows from the liquid injection port 11, it is considered to be full.

[0034] The lower end face of the cabin body 1 in contact with the annular phased array ultrasonic probe is provided with a fan-shaped curved surface 12, which is different from the plane structure of the conventional test block, and can provide an arc-shaped contact surface to ensure that the test block can be attached to the annular probe, so that the test block and the annular phased array ultrasonic probe present a face-to-face contact mode, which not only greatly reduces the occurrence of waveform collection failure, but also eliminates the need to move the test block back and forth when testing the probe function, and only needs to press the test block on the probe, thereby reducing the workload of the operator.

[0035] The end cover 2 is of an integral structure, and the lower end of the end cover is provided with a flange 21 which is of a circular arc structure; when the end cover 2 and the cabin body 1 are installed together, the flange 21 can extend into the liquid storage cabin chamber 13 of the cabin body 1, and at the same time, the flange 21 is in butt joint with the opening at the top end of the cabin body 1 and can form plugging for the opening at the top end of the cabin body 1. The test block can simulate the actual situation in the pipeline of the sea pipe, and the end cover 2 serves as a substitute for the sea pipe, and the thickness of the end cover 2 can replace the pipeline wall thickness of the sea pipe, and the end cover 2 is directly in contact with the coupling agent such as water and crude oil. According to the wall thickness of the sea pipe to be detected, the thickness of the flange 21 is appropriately increased or reduced, so that the end cover 2 is provided with different thickness specifications, and the end cover 2 of different thickness specifications is the same in the outer shape size, and the difference lies in that the thickness m of the flange 21 is different, that is, the thickness of the flange 21 on the side of the probe is different. By replacing the end cover 2 of different thickness, different pipeline wall thicknesses can be simulated, and only one set of test block can meet various testing requirements, thereby effectively improving the practicability and applicability.

[0036] The screw 4 and the liquid injection port 11 are threadedly connected, and the installation is simple and convenient, and the sealing ring 3 is further installed between the screw 4 and the liquid injection port 11, preferably, the sealing ring 3 is an O-shaped rubber ring, and the sealing ring 3 effectively improves the sealing performance of the connection between the screw 4 and the liquid injection port 11.

[0037] As Figure 11As shown, a represents a transmitting wave, b represents a echo, in actual operation, the operator injects water or crude oil and other different coupling mediums in the test block cabin 1, and then places the test block on the surface of the annular phased array ultrasonic probe 5 of the ultrasonic detector, the transmitter of the annular phased array ultrasonic probe 5 transmits periodic ultrasonic waves, the ultrasonic wave signal (transmitting wave a) transmitted by the annular phased array ultrasonic probe 5 contacts the flange 21 of the end cover 2 through the coupling medium in the test block, and then ultrasonic echo b is generated, the echo b is received by the receiver of the annular phased array ultrasonic probe 5 and stored in the storage unit thereof. Since the ultrasonic wave is reflected multiple times in the test block after being transmitted by the transmitter until the ultrasonic wave is attenuated to zero, therefore, the receiver is provided with a threshold range for receiving the ultrasonic signal, the signal beyond the threshold range has no practical significance and cannot be used as the basis for judging the pipe wall thickness, the receiver setting the threshold range for receiving the ultrasonic signal is prior art, which will not be repeated here. The annular phased array ultrasonic probe 5 can be wirelessly connected to a computer, the staff member uses the external computer to convert the ultrasonic signal into an observable signal by using professional signal data processing software (the signal data processing software is prior art), so as to realize the observation of the ultrasonic signal by the staff member, and the staff member can judge the arrival position of the ultrasonic signal according to the time when the receiver receives the signal. The staff member realizes the debugging under different coupling mediums by observing the received ultrasonic signal. The test block is used to test the corresponding medium environment before the ultrasonic detector detects the submarine pipeline, so that better signals can be obtained, and whether the ultrasonic probe works normally can be judged.

[0038] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A test block for a variable coupling medium in a ring-shaped phased array ultrasonic probe, characterized in that: The device includes a cabin (1), an end cap (2), and screws (4). The lower end face of the cabin (1) that contacts the annular phased array ultrasonic probe is provided with a fan-shaped arc surface (12). The upper end of the cabin (1) is detachably equipped with an end cap (2). The side wall of the cabin (1) is provided with a liquid injection port (11), and the liquid injection port (11) is detachably equipped with screws (4).

2. The test block for a variable coupling medium of a ring phased array ultrasonic probe according to claim 1, characterized in that: The screw (4) and the injection port (11) are threaded together, and a sealing ring (3) is installed between the screw (4) and the injection port (11).

3. A test block for a variable coupling medium of a ring phased array ultrasonic probe according to claim 2, characterized in that: The sealing ring (3) is an O-ring rubber ring.

4. A test block for a variable coupling medium of a ring phased array ultrasonic probe according to claim 1, characterized in that: The chamber (1) has an opening at the top and a liquid storage chamber (13) is provided inside the chamber (1). The opening at the top of the chamber (1) and the liquid injection port (11) on the side wall are respectively connected to the liquid storage chamber (13).

5. A test block for a variable coupling medium of a ring phased array ultrasonic probe according to claim 4, characterized in that: The end cap (2) is an integral structure, and a flange (21) is provided at the lower end of the end cap. When the end cap (2) and the chamber (1) are installed together, the flange (21) can extend into the liquid storage chamber (13) of the chamber (1), and at the same time, the flange (21) connects with the opening at the top of the chamber (1) and can block the opening at the top of the chamber (1).

6. A test block for a variable coupling medium of a ring phased array ultrasonic probe according to claim 1, characterized in that: The liquid storage chamber (13) can be filled with different coupling media to simulate different media conditions between the pipe wall and the ultrasonic probe.

7. A test block for a variable coupling medium of a ring phased array ultrasonic probe according to claim 1, characterized in that: The end caps (2) are available in different thicknesses.

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