Ultrasonic probe with sealing protection function for pipeline quality detection

Abstract

An ultrasonic probe for pipeline quality inspection with sealing protection function belongs to the field of ultrasonic sensor technology. It includes an ultrasonic probe body, a probe housing, a rear limiting seal ring, and a front limiting seal ring. The ultrasonic probe body is fixedly installed inside the front end of the probe housing. A retaining ring is located on the outer front side of the probe housing. The rear limiting seal ring includes a sealing outer shell and a sealing rubber ring, with the sealing outer shell threaded onto the front of the probe housing. The front limiting seal ring includes a sealing outer shell A and a sealing rubber ring A, with the sealing outer shell A threaded onto the front end of the probe housing. This novel design, based on the ultrasonic probe body, ensures that the ultrasonic probe body does not contact the inner wall of the pipeline, while the sealing outer shell and sealing outer shell A do. This protects the ultrasonic probe body, guaranteeing its normal operation while minimizing the probability of collision and breakage between the ultrasonic probe body and the inner wall of the pipeline, as well as damage caused by liquid entering the housing from the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic probe technology, and in particular to an ultrasonic probe for pipeline quality inspection with sealing protection function. Background Technology

[0002] Ultrasonic detectors are used for quality inspection inside pipelines transporting liquids (such as crude oil). During inspection, the probe of the ultrasonic detector is inserted into the pipeline from front to back (the ultrasonic detector and the ultrasonic probe are connected by wires). The working principle of the ultrasonic probe and the ultrasonic detector in inspecting pipeline quality mainly relies on the piezoelectric crystal inside. When voltage is applied to the piezoelectric crystal, it is excited and generates ultrasonic signals. These signals are emitted into the pipeline being inspected by the transmitting head of the ultrasonic probe. At the same time, the receiving head of the ultrasonic probe can receive the reflected ultrasonic signals and convert them into electrical signals. These electrical signals are then analyzed and processed by the processing system of the ultrasonic detector located outside the pipeline. By calculating the time difference between the transmitted signal and the echo signal, the location of defects in the pipeline (such as a crack in a specific location on the inner wall of the pipeline) can be accurately determined.

[0003] To ensure that the ultrasonic signals emitted by the transmitter and received by the receiver are strong enough (to prevent signal attenuation) and achieve good detection results, the housings of the transmitter and receiver ends of the ultrasonic probe are relatively thin. Since the outer housing structure of the ultrasonic probe is made of non-metallic material, it is relatively easy to break due to wear and collision in the pipe. Furthermore, when the pipe is filled with pressurized liquid, the pressurized liquid is more likely to enter the ultrasonic probe through the housing cracks, causing the ultrasonic probe to malfunction or even be damaged. Utility Model Content

[0004] To overcome the shortcomings of existing ultrasonic probes due to structural limitations, as described in the background, this utility model provides an ultrasonic probe for pipeline quality inspection with a sealing and protection function. Based on the ultrasonic probe body, and with the joint action of related structures, it ensures the normal operation of the ultrasonic probe body while minimizing the probability of collision and breakage between the ultrasonic probe body and the inner wall of the pipeline, as well as damage caused by liquid entering the housing from the pipeline.

[0005] The technical solution adopted by this utility model to solve its technical problem is: An ultrasonic probe for pipeline quality inspection with sealing protection function includes an ultrasonic probe body, a probe housing, a rear limiting seal ring, and a front limiting seal ring. The rear end of the probe housing is a closed structure, and the front end is an open structure. The ultrasonic probe body is fixedly installed inside the front end of the probe housing. A retaining ring is located on the outer side of the front part of the probe housing, and the probe housing has external threads at the position in front of the retaining ring. The rear limiting seal ring includes a sealing shell and a sealing rubber ring. Both the sealing shell and the sealing rubber ring are hollow structures. The inner end of the sealing shell has an installation groove. The inner side of the sealing shell has internal threads. The sealing rubber ring is fitted into the installation groove of the sealing shell. The sealing shell is threadedly installed at the front part of the probe housing. The front limiting seal ring includes a sealing shell A and a sealing rubber ring A. Both the sealing shell A and the sealing rubber ring A are hollow structures. The inner end of the sealing shell A has an installation groove A. The inner side of the sealing shell A has internal threads. The sealing rubber ring A is fitted into the installation groove of the sealing shell A. The outer front end of the sealing shell A has a sealing plate. The sealing shell A is threadedly installed at the front end of the probe housing.

[0006] Furthermore, the outer side of the sealing ring and the inner side of the sealing housing mounting groove are in an interference fit structure, and the outer side of the sealing ring A and the inner side of the sealing housing mounting groove A are in an interference fit structure.

[0007] Furthermore, the inner diameter of the sealing ring is smaller than the inner diameter of the sealing shell and smaller than the outer diameter of the probe housing; the inner diameter of the sealing ring A is smaller than the inner diameter of the sealing shell A and smaller than the outer diameter of the probe housing.

[0008] Furthermore, the rear side of the sealing housing and the front side of the retaining ring are in contact.

[0009] Furthermore, the front end of the sealed outer shell and the rear end of the sealed housing A are respectively located at the rear end and front end of the ultrasonic probe inside the probe housing.

[0010] Furthermore, the outer diameter of the sealing shell, the sealing shell A, is larger than the front end outer diameter of the probe housing.

[0011] Compared with existing technologies, the advantages of this invention are as follows: Based on the ultrasonic probe body, the sealed outer shell and sealed outer shell A ensure that the ultrasonic probe body does not contact the inner wall of the pipe after entering the pipe. The sealed outer shell and sealed outer shell A contact the inner wall of the pipe, protecting the ultrasonic probe body. This ensures the normal operation of the ultrasonic probe body and minimizes the probability of collision and breakage between the ultrasonic probe body and the inner wall of the pipe, as well as damage caused by liquid entering the shell. In summary, this invention has good application prospects. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0014] Figure 1 As shown, an ultrasonic probe for pipeline quality inspection with sealing protection function includes an ultrasonic probe body 1, an annular probe housing 2, a rear limiting seal ring, and a front limiting seal ring. The rear end of the probe housing 2 is a closed structure, and the front end is an open structure. The ultrasonic probe body 1 is fixedly installed inside the front end of the probe housing 2. A retaining ring 21 is integrally formed on the outer side of the front middle part of the probe housing 2, and the probe housing 2 has external threads at the front position of the retaining ring 21. The rear limiting seal ring includes a sealing shell 31 and a sealing rubber ring 32. Both the sealing shell 31 and the sealing rubber ring 32 are annular hollow structures. The inner end of the sealing shell 31 has an outwardly concave groove as a mounting groove 33. The inner side of the sealing shell 31 has internal threads, and the sealing rubber ring 32... Two sealing shells are installed in the mounting groove 33 of the sealing shell. The sealing shell 31 is screwed into the front external thread of the probe housing 2 via its own internal thread and installed at the front of the probe housing 2. The front limiting sealing ring includes a sealing shell A41 and a sealing rubber ring A42. Both the sealing shell A41 and the sealing rubber ring A42 are annular hollow structures. The inner end of the sealing shell A41 has a groove with an outward concave shape as the mounting groove A43. The inner side of the sealing shell A41 has an internal thread. The sealing rubber ring A42 is fitted in the mounting groove 43 of the sealing shell A. The front outer side of the sealing shell A41 is integrally formed with a sealing plate 44 with an outer diameter smaller than that of the sealing shell A. The sealing shell A43 is screwed into the front external thread of the probe housing 41 via its own internal thread and installed at the front end of the probe housing 1.

[0015] Figure 1 As shown, the sealing ring 32 and the sealing housing mounting groove 33 are in an interference fit structure, as are the sealing ring A42 and the sealing housing mounting groove A43. The inner diameter of the sealing ring 32 is slightly smaller than the inner diameter of the sealing housing 31 and slightly smaller than the outer diameter of the probe housing 2. The inner diameter of the sealing ring A42 is slightly smaller than the inner diameter of the sealing housing A41 and slightly smaller than the outer diameter of the probe housing 2. The rear end of the sealing housing 31 contacts the front end of the retaining ring 21. The front end of the sealing housing 31 and the rear end of the sealing housing A41 are located at the rear and front ends of the ultrasonic probe body 1 inside the probe housing, respectively. The outer diameters of the sealing housing 31 and the sealing housing A41 are larger than the front outer diameter of the probe housing 2.

[0016] Figure 1As shown, this novel invention is based on an ultrasonic probe body 1. In specific applications, during testing, the ultrasonic probe body 1 is placed inside the pipe from front to back (the ultrasonic detector and the ultrasonic probe are connected by wires). The working principle of the ultrasonic probe body 1 in conjunction with the ultrasonic detector when detecting pipe quality mainly relies on its internal piezoelectric crystal. When voltage is applied to the piezoelectric crystal, it is excited and generates ultrasonic signals. These signals are emitted into the pipe being inspected by the transmitting head of the ultrasonic probe body 1. At the same time, the receiving head of the ultrasonic probe body 1 can receive the reflected ultrasonic signals and convert them into electrical signals. These electrical signals are then analyzed and processed by the processing system of the ultrasonic detector located outside the pipe. By calculating the time difference between the transmitted signal and the echo signal, the location of defects in the pipe can be accurately determined (such as a crack at a specific location on the inner wall of the pipe). The above is a mature technology, and this application will not elaborate further. In this new invention, the outer diameters of the sealing shell 31 and sealing shell A41 are larger than the outer diameter of the probe shell 2. This ensures that the ultrasonic probe body 1 does not contact the inner wall of the pipe after entering the pipe. The outer sides of the sealing shell 31 and sealing shell A41 contact the inner wall of the pipe, thus protecting the ultrasonic probe body 2. This ensures the normal operation of the ultrasonic probe body 2 and also minimizes the chances of the ultrasonic probe body 1 colliding and breaking with the inner wall of the pipe, as well as the possibility of liquid entering the shell and causing damage.

[0017] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0018] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An ultrasonic probe for pipeline quality inspection with sealing protection function, comprising an ultrasonic probe body, a probe housing, a rear limiting seal ring, and a front limiting seal ring; characterized in that, The probe housing has a closed rear end and an open front end. The ultrasonic probe body is fixedly installed inside the front end of the probe housing. A retaining ring is located on the outer front side of the probe housing, and the probe housing has external threads at the position in front of the retaining ring. The rear limiting seal ring includes a sealing shell and a sealing ring. Both the sealing shell and the sealing ring are hollow structures. The inner end of the sealing shell has a mounting groove. The inner side of the sealing shell has internal threads, and the sealing ring is fitted into the mounting groove of the sealing shell. The sealing shell is threadedly installed at the front of the probe housing. The front limiting seal ring includes a sealing shell A and a sealing ring A. Both the sealing shell A and the sealing ring A are hollow structures. The inner end of the sealing shell A has a mounting groove A. The inner side of the sealing shell A has internal threads, and the sealing ring A is fitted into the mounting groove of the sealing shell A. The outer front end of the sealing shell A has a sealing plate, and the sealing shell A is threadedly installed at the front end of the probe housing.

2. The ultrasonic probe for pipeline quality inspection with sealing protection function according to claim 1, characterized in that, The outer side of the sealing ring and the inner side of the sealing housing mounting groove are in an interference fit structure. The outer side of the sealing ring A and the inner side of the sealing housing mounting groove A are in an interference fit structure.

3. The ultrasonic probe for pipeline quality inspection with sealing protection function according to claim 1, characterized in that, The inner diameter of the sealing ring is smaller than the inner diameter of the sealing shell and smaller than the outer diameter of the probe housing. The inner diameter of the sealing ring A is smaller than the inner diameter of the sealing shell A and smaller than the outer diameter of the probe housing.

4. The ultrasonic probe for pipeline quality inspection with sealing protection function according to claim 1, characterized in that, The rear side of the sealing housing and the front side of the retaining ring are in contact.

5. An ultrasonic probe for pipeline quality inspection with sealing protection function according to claim 1, characterized in that, The front end of the sealed outer shell and the rear end of the sealed housing A are located at the rear and front ends of the ultrasonic probe inside the probe housing, respectively.

6. The ultrasonic probe for pipeline quality inspection with sealing protection function according to claim 1, characterized in that, The outer diameter of the sealed outer shell, specifically the sealed outer shell A, is larger than the outer diameter of the front end of the probe housing.

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