CN202471660U - Piezoelectric ceramic transducer voltage reduction device in process of testing deep drilled hole sound waves - Google Patents
Piezoelectric ceramic transducer voltage reduction device in process of testing deep drilled hole sound waves Download PDFInfo
- Publication number
- CN202471660U CN202471660U CN2012200855078U CN201220085507U CN202471660U CN 202471660 U CN202471660 U CN 202471660U CN 2012200855078 U CN2012200855078 U CN 2012200855078U CN 201220085507 U CN201220085507 U CN 201220085507U CN 202471660 U CN202471660 U CN 202471660U
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- piezoelectric ceramic
- ceramic transducer
- pressure
- sealing
- outer cover
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- Expired - Lifetime
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Abstract
The utility model provides a piezoelectric ceramic transducer voltage reduction device in a process of testing deep drilled hole sound waves. The piezoelectric ceramic transducer voltage reduction device comprises a pressure resistant shell of which the upper end is provided with an opening, wherein a sealing outer barrel is sleeved on the outer wall of the pressure resistant shell; an insulation pad is paved at the bottom of an inner cavity of the pressure resistant shell; a piezoelectric ceramic transducer is arranged in the pressure resistant shell; the middle of the piezoelectric ceramic transducer is inserted into the insulation barrel; the front end of a sealing cover is sleeved with the insulation pad and extends into the opening at the upper end of the insulation barrel; a sealing ring pressing piece is connected with the sealing cover through a sealing ring; a sealed cabin of the piezoelectric ceramic transducer consists of the pressure resistant shell, the sealing outer barrel, the sealing cover, the sealing ring pressing piece and the sealing ring; and insulation oil is filled in the sealing cabin. When the pressure reduction device enters a deep hole and is used for testing the deep hole, the stainless steel pressure resistant shell ensures that a sealing device cannot be deformed, so that water pressure in the deep hole cannot be transmitted into the sealing device; normal pressure is retained in the device; the sound-electricity conversion performance and the efficiency of the piezoelectric ceramic transducer are improved; and the accuracy of testing the wave velocity of a rock body is improved.
Description
Technical field
The utility model relates to gun drilling sonic test field in all kinds of engineering investigations, specifically is piezoelectric ceramic transducer reliever in a kind of gun drilling sonic test.
Background technology
In water conservancy and hydropower, nuclear power station, bridge tunnel, other engineering investigation, in order to obtain the rock-soil mechanics parameter of a formation, soil layer, need carry out sonic test to boring, obtain the velocity of wave parameter of boring rock stratum, soil layer.When boring was dark, the piezoelectric ceramics of received ultrasonic signal will be in the bigger hydraulic pressure in the probe, influences the less ultrasonic signal of received energy.
Existing sonic test probe all is directly to be fixed on piezoelectric ceramic transducer on the probe; Receive hole wall and propagate next sound wave vibrations; Sound wave vibrations causing piezoelectric ceramic transducer produces deformation; Piezoelectric ceramics deformation produces electric signal, and instrument is gathered electric signal and obtained the sound wave shocking waveshape, thus testing bore holes rock stratum velocity of wave.When boring was dark, piezoelectric ceramics was in work under the bigger hydraulic pressure, and hydraulic pressure can influence the sound of piezoelectric ceramic transducer---photoelectric transformation efficiency and quality.
Summary of the invention
To prior art problems; The utility model provides piezoelectric ceramic transducer reliever in a kind of gun drilling sonic test; Piezoelectric ceramic transducer is in atmospheric pressure state in the time of can realizing the gun drilling sonic test; Guaranteed the sound of piezoelectric ceramic transducer---photoelectric transformation efficiency and quality, the signal quality of piezoelectric ceramic transducer when having improved the gun drilling sonic test, and solved the sealing problem of piezoelectric ceramic transducer.
Piezoelectric ceramic transducer reliever in a kind of gun drilling sonic test; The pressure-proof outer cover that comprises open upper end, the sheathed sealed outer cylinder of pressure-proof outer cover outer wall, the intracavity bottom of pressure-proof outer cover is laid insulating mat; Piezoelectric ceramic transducer is installed in the pressure-proof outer cover; Insulating cylinder is inserted at the middle part of piezoelectric ceramic transducer, stretches into the open upper end of insulating cylinder behind the sheathed insulating mat of the front end of gland bonnet, and the O-ring seal casting die is connected with gland bonnet through O-ring seal; Pressure-proof outer cover, sealed outer cylinder, gland bonnet, O-ring seal casting die and O-ring seal are formed the pressurized capsule of piezoelectric ceramic transducer, in pressurized capsule, pour into insulating oil.
Piezoelectric ceramic transducer reliever in the aforesaid gun drilling sonic test, four significantly windows are offered in the cylindrical shell side of pressure-proof outer cover.
When adopting the reliever of the utility model to get into the deep hole test, the stainless steel pressure-proof outer cover guarantees that deformation does not take place packoff, makes that the hydraulic pressure transmission has kept keeping normal pressure in the device less than packoff inside in the deep hole; Open four significantly windows on the stainless steel pressure-proof outer cover simultaneously, outer cover sealed nylon urceolus has guaranteed to transmit the sound wave vibrations through in the sealed nylon tube access to plant from hole wall.
Description of drawings
Fig. 1 is the decomposition texture synoptic diagram of piezoelectric ceramic transducer reliever in the utility model gun drilling sonic test;
Fig. 2 is the cut-open view after the assembling of piezoelectric ceramic transducer reliever in the utility model gun drilling sonic test;
Fig. 3 is the diagrammatic cross-section of the utility model pressure-proof outer cover.
Among the figure: 1-pressure-proof outer cover, 2-insulating mat, 3-sealed outer cylinder, 4-piezoelectric ceramic transducer, 5-insulating cylinder, 6-insulating oil, 7-insulating mat, 8-gland bonnet, 9-O-ring seal, 10-O-ring seal casting die, 11-water-proof cable, 12-window.
Embodiment
To combine the accompanying drawing in the utility model below, the technical scheme in the utility model will be carried out clear, intactly description.
Please refer to Fig. 1 and Fig. 2; The piezoelectric ceramic transducer reliever comprises the pressure-proof outer cover 1 of open upper end in the utility model gun drilling sonic test, the sheathed sealed outer cylinder 3 of pressure-proof outer cover 1 outer wall, and the intracavity bottom of pressure-proof outer cover 1 is laid insulating mat 2; Piezoelectric ceramic transducer 4 is installed in the pressure-proof outer cover 1; Insulating cylinder 5 is inserted at the middle part of piezoelectric ceramic transducer 4, stretches into the open upper end of insulating cylinder 5 behind the sheathed insulating mat 7 of the front end of gland bonnet 8, and O-ring seal casting die 10 is connected with gland bonnet 8 through O-ring seal 9.
Pressure-proof outer cover 1, sealed outer cylinder 3, gland bonnet 8, O-ring seal casting die 10 and O-ring seal 9 are formed the pressurized capsule of piezoelectric ceramic transducer, at perfusion insulating oil 6 (as enclosing shown in 2) in the pressurized capsule.Insulating oil plays the couplant that transmits vibration of ultrasonic wave, the effect that keeps piezoelectric ceramic transducer to insulate and keep normal pressure on every side.
Insulating mat 2 guarantees that with insulating cylinder 5 piezoelectric ceramic transducer does not directly contact with the metal section and part of pressurized capsule, can avoid piezoelectric ceramic transducer ground connection.Water-proof cable 11 on the piezoelectric ceramics transducing 4 passes from pressure-proof outer cover 1 intracavity bottom, insulating cylinder 5, gland bonnet 8, O-ring seal 9, insulating mat 7, O-ring seal casting die 10 successively.Water-proof cable 11 on the piezoelectric ceramics transducing 4 and the sealing between pressurized capsule compress O-ring seal 9 by gland bonnet 8 and O-ring seal casting die 10 spirals; Thereby O-ring seal 9 attenuation internal diameters are diminished choke cable; The external diameter change chokes the space between gland bonnet greatly, reaches the sealing of cable and pressurized capsule.
As shown in Figure 3, four significantly windows 12 are offered in the cylindrical shell side of pressure-proof outer cover 1, and the shape of window 12 can be rectangle; Pressure-proof outer cover 1 outer cover sealed outer cylinder 3 plays the effect that the vibration of ultrasonic wave that hole wall is propagated can reach piezoelectric ceramic transducer 4 through sealed outer cylinder 3 and window 12.
The technique effect that the utility model reaches is following: piezoelectric ceramic transducer can make in pressurized capsule and when the gun drilling sonic test, keep the piezoelectric ceramic transducer duty under normal pressure; Improve sound---the electric conversion performance and the efficient of piezoelectric ceramic transducer; Obtain test data and result preferably, improve the rock mass velocity accuracy of test.
The above; Be merely the embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who belongs to the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claim.
Claims (2)
1. piezoelectric ceramic transducer reliever in the gun drilling sonic test; It is characterized in that: the pressure-proof outer cover (1) that comprises open upper end; The sheathed sealed outer cylinder of pressure-proof outer cover (1) outer wall (3); The intracavity bottom of pressure-proof outer cover (1) is laid insulating mat (2), and piezoelectric ceramic transducer (4) is installed in the pressure-proof outer cover (1), and insulating cylinder (5) is inserted at the middle part of piezoelectric ceramic transducer (4); Stretch into the open upper end of insulating cylinder (5) behind the sheathed insulating mat of front end (7) of gland bonnet (8); O-ring seal casting die (10) is connected with gland bonnet (8) through O-ring seal (9), and pressure-proof outer cover (1), sealed outer cylinder (3), gland bonnet (8), O-ring seal casting die (10) and O-ring seal (9) are formed the pressurized capsule of piezoelectric ceramic transducer (4), in pressurized capsule, pour into insulating oil (6).
2. piezoelectric ceramic transducer reliever in the gun drilling sonic test as claimed in claim 1 is characterized in that: four significantly windows (12) are offered in the cylindrical shell side of pressure-proof outer cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200855078U CN202471660U (en) | 2012-03-08 | 2012-03-08 | Piezoelectric ceramic transducer voltage reduction device in process of testing deep drilled hole sound waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200855078U CN202471660U (en) | 2012-03-08 | 2012-03-08 | Piezoelectric ceramic transducer voltage reduction device in process of testing deep drilled hole sound waves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202471660U true CN202471660U (en) | 2012-10-03 |
Family
ID=46919812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200855078U Expired - Lifetime CN202471660U (en) | 2012-03-08 | 2012-03-08 | Piezoelectric ceramic transducer voltage reduction device in process of testing deep drilled hole sound waves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202471660U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113686274A (en) * | 2021-08-23 | 2021-11-23 | 重庆交通大学 | Dangerous rock crack water depth measurement method, dangerous rock collapse early warning method and system |
-
2012
- 2012-03-08 CN CN2012200855078U patent/CN202471660U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113686274A (en) * | 2021-08-23 | 2021-11-23 | 重庆交通大学 | Dangerous rock crack water depth measurement method, dangerous rock collapse early warning method and system |
| CN113686274B (en) * | 2021-08-23 | 2024-05-10 | 重庆交通大学 | Dangerous rock crack water depth measurement method, dangerous rock collapse early warning method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
|
| CX01 | Expiry of patent term |