CN103308606A

CN103308606A - Transverse wave focusing and flushing ultrasonic probe

Info

Publication number: CN103308606A
Application number: CN2013102208813A
Authority: CN
Inventors: 吴来政; 邬结文
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-06
Filing date: 2013-06-06
Publication date: 2013-09-18
Anticipated expiration: 2033-06-06
Also published as: CN103308606B

Abstract

The invention discloses a transverse wave focusing and flushing ultrasonic probe which comprises a probe shell and a probe core, wherein the probe core is inserted into an inner cavity of the probe shell from an inclined hole of the top end of the probe shell; an included angle is formed between the axial direction of the inclined hole and the vertical direction; a water cavity isolation bracket is arranged in the inner cavity of the probe shell; the water cavity isolation bracket is sleeved on the excircle of the probe core; the inner cavity of the probe shell is divided into an upper water cavity and a lower water cavity through the water cavity isolation bracket; the upper water cavity and the lower water cavity are communicated through a water leakage hole in the water cavity isolation bracket; a spherical concave mirror is adhered to a piezoelectric crystal plate at the front end of the probe core. The transverse wave focusing and flushing ultrasonic probe is simple and practical, imported products are replaced, the production cost is reduced, the safety production is guaranteed, a gap in the aspect of national large-area plate transverse wave flushing flaw detection is filled, the problems of high-strength manual operation, low efficiency, detection leakage caused by poor contact and the like are solved, a safety guarantee means is increased for construction of the national large/ultra-large equipment and facilities, and the social benefits and the economic benefits are greatly improved.

Description

Shear wave focuses on the bath ultrasonic probe

Technical field

The present invention relates to a kind of shear wave and focus on the bath ultrasonic probe.

Background technology

UT (Ultrasonic Testing) to the large tracts of land plate, usually adopt compressional wave normal probe bath defectoscopy, for detection of the inherent vice parallel with the plate surface, and for the defective that is not parallel to plate surface, have only with common angle probe contact method and detect, this method is special loss probe not only, the more important thing is that labour intensity is too big, efficient is extremely low, and it is bad that the high roughness that adds plate surface causes lotus root to close, and has more strengthened to leak the possibility of visiting.Owing to shear wave bath probe designs, making and experiment are comparatively difficult, therefore, find also that at present the shear wave of energy practical application focuses on the probe of washing by water.In addition, the bath ultrasonic probe is suitable for occasions such as large tracts of land, long-time, rough surface most, but come from the acoustic emission surface that bubble in the tap water very easily is attached to the probe core, make ultrasonic energy widely loss disperse, and echoed signal is extremely unstable even disappearance, for this reason, some places use the hydrostatic in the water storage filling, the little water yield of putting that has slows down job schedule and alleviates the bubble degree of adhesion, the external expensive complicated probe that has the bulb apparatus of cooling down of the employing import that also has, but these are not the optimum methods of dealing with problems.

Summary of the invention

Purpose of the present invention just provide a kind of simple in structure, survey the accuracy rate height, leak the low shear wave of spy rate and focus on the bath ultrasonic probe.

Shear wave of the present invention focuses on the bath ultrasonic probe, comprise probing shell, the probe core, be characterized in, the probe core is inserted in the probing shell inner chamber from the inclined hole on probing shell top, the probe core is threaded with the inclined hole on probing shell top, inclined hole axially become 10-30 degree angle with vertical direction, the water cavity isolation mount is set in the probing shell inner chamber, the water cavity isolation mount is enclosed within on the cylindrical of probe core, the water cavity isolation mount is divided into upper water cavity and following water cavity with the probing shell inner chamber, upper water cavity and following water cavity are communicated with by the leaking hole on the water cavity isolation mount, cross filtering barrier and the water cavity isolation mount is sticked together, the sphere concave mirror is bonded on the piezoelectric chip of probe core front end, and the chamber wall of upper water cavity has inlet opening and water outlet venthole.

Shear wave of the present invention focuses on the bath ultrasonic probe, with crossing filtering barrier the probing shell inner chamber is separated into two water cavities up and down, cross the material that filtering barrier adopts the permeable filter bubble of sponge kind, make the water that enters down water cavity be cut bubble, bubble is emerged with the water outlet venthole in upper water cavity, original air is along with entering by the apopore in this water cavity or groove of current discharged in the following water cavity, thereby on the sphere concave mirror, do not have bubble adhesion in the above, can not draw and ring its normal operating conditions, effectively ensure the normal operating conditions on probe core acoustic emission surface; Because the probe core becomes angle with vertical direction, piezoelectric chip emission ultrasound wave produces in following water cavity by the sphere concave mirror and focuses on burnt post for the first time, for the first time focus on burnt post and also become angle with vertical direction, this burnt post enters checking matter generation refraction formation shear wave and focuses on burnt post, Main beam was by original route reflected back probe after this shear wave focused on burnt post and arrives crack site in the checking matter, thereby having realized that shear wave focuses on carries out carrying out flaw detection.

It is simple and practical that shear wave of the present invention focuses on the bath ultrasonic probe, import substitutes have reduced production cost, guarantee safe production, it has filled up a blank of China large tracts of land sheet material shear wave bath flaw detection aspect, overcome the high strength manual work, problems such as the leakage spy that poor efficiency and loose contact cause, for the construction of Chinese large-sized, large equipment, facility many safety guarantee means, improved social benefit and economic benefit widely.

Description of drawings

Fig. 1 is structural representation of the present invention.

Embodiment

A kind of shear wave focuses on the bath ultrasonic probe, comprise probing shell 6, probe core 8, be characterized in, probe core 8 is inserted in probing shell 6 inner chambers from the inclined hole 9 on probing shell 6 tops, probe core 8 is threaded with the inclined hole 9 on probing shell top, inclined hole 9 axially become 10-30 degree angle with vertical direction, in probing shell 6 inner chambers water cavity isolation mount 3 is set, water cavity isolation mount 3 is enclosed within on the cylindrical of probe core 8, water cavity isolation mount 3 is divided into upper water cavity 10 and following water cavity 12 with probing shell 6 inner chambers, upper water cavity 10 and following water cavity 12 are communicated with by the leaking hole 11 on the water cavity isolation mount 3, crossing filtering barrier 4 is sticked together with water cavity isolation mount 3, sphere concave mirror 1 is bonded on the piezoelectric chip 2 of probe core 8 front ends, and the chamber wall of upper water cavity 10 has inlet opening 5 and water outlet venthole 7.

During work, piezoelectric chip 2 emission ultrasound waves produce in following water cavity 12 by sphere concave mirror 1 and focus on burnt post 14 for the first time, this burnt post enters checking matter 13 generation refraction formation shear waves and focuses on burnt post 16, the crack site 16 back Main beams that this shear wave focuses in the burnt post 15 arrival checking matters 13 are popped one's head in by the original route reflected back, can realize the shear wave of crack site 16 is focused on carrying out flaw detection.

Claims

1. a shear wave focuses on the bath ultrasonic probe, comprise probing shell (6), probe core (8), it is characterized in that: probe core (8) is inserted in probing shell (6) inner chamber from the inclined hole (9) on probing shell (6) top, inclined hole (9) axially become 10-30 degree angle with vertical direction, in probing shell (6) inner chamber water cavity isolation mount (3) is set, water cavity isolation mount (3) is enclosed within on the cylindrical of probe core (8), water cavity isolation mount (3) is divided into upper water cavity (10) and following water cavity (12) with probing shell (6) inner chamber, upper water cavity (10) and following water cavity (12) are communicated with by the leaking hole (11) on the water cavity isolation mount (3), sphere concave mirror (1) is bonded on the piezoelectric chip (2) of probe core (8) front end, and the chamber wall of upper water cavity (10) has inlet opening (5) and water outlet venthole (7).

2. shear wave according to claim 1 focuses on the bath ultrasonic probe, it is characterized in that: probe core (8) is threaded with the inclined hole (9) on probing shell top.

3. shear wave according to claim 1 focuses on the bath ultrasonic probe, it is characterized in that: cross filtering barrier (4) and be sticked together with water cavity isolation mount (3).