CN203508357U - Ultrasonic transducer suitable for long-distance measurement and applicable to coal mine environment - Google Patents
Ultrasonic transducer suitable for long-distance measurement and applicable to coal mine environment Download PDFInfo
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- CN203508357U CN203508357U CN201320582181.4U CN201320582181U CN203508357U CN 203508357 U CN203508357 U CN 203508357U CN 201320582181 U CN201320582181 U CN 201320582181U CN 203508357 U CN203508357 U CN 203508357U
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- ultrasonic transducer
- cable
- coal mine
- cylindrical tube
- mine environment
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Abstract
The utility model discloses an ultrasonic transducer suitable for long-distance measurement and applicable to a coal mine environment. The ultrasonic transducer comprises a shell and a core oscillator. The shell comprises a cylindrical cylinder body, a protective cover, a horn mouth, a gasket and an acoustic window. The upper end of the horn mouth is welded to the protective cover. The protective cover is connected to the lower end of the cylindrical cylinder body in a threaded mode. The core oscillator comprises a fastening bolt, a rear end cap, a piezoelectric crystal plate, a copper electrode sheet, a front end cap, a matching layer, a first cable and a second cable. The rear end cap, the piezoelectric crystal plate, the copper electrode sheet and the front end cap form a composite sandwich type oscillator body through the fastening bolt. One end of the first cable is electrically connected with the fastening bolt. One end of the second cable is electrically connected with the copper electrode sheet. The lower surface of the front end cap is connected with the matching layer. The gasket and the acoustic window are both closely matched with the protective cover. The upper surface of the gasket is tightly attached to the lower surface of the matching layer. The lower surface of the gasket is tightly attached to the upper surface of the acoustic window. The ultrasonic transducer can conduct long-distance measurement in the underground environment of a coal mine.
Description
Technical field
The utility model relates to a kind of range finding ultrasonic transducer far away that is applied to coal mine environment, belongs to coal mine equipment field.
Background technology
On market, there is the instrument of much utilizing ultrasonic transducer to find range, but these existing range findings are higher by transducer resonant frequency, in communication process, soon, echo-signal is very little in decay, therefore transducer range finding range is short, and prior art general measure distance is no more than 20 meters; And these transducers fail to carry out effective technological processing for explosion protection feature, safe class is not high, cannot reach the anti-explosion safety grade of product for coal mine environment, can not in coal mine environment, use.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of range finding ultrasonic transducer far away that is applied to coal mine environment is provided, and it can carry out long range measurements in the subsurface environment of colliery.
In order to solve the problems of the technologies described above, technical solution adopted in the utility model is: a kind of range finding ultrasonic transducer far away that is applied to coal mine environment, comprise shell and core body oscillator, and it is characterized in that: described shell comprises cylindrical tube, guard shield, horn mouth, pad and sound transmitting window, bell-mouthed upper end is welded on guard shield, and guard shield is threaded connection the lower end at cylindrical tube, and described core body oscillator comprises fastening bolt, rear end cap, piezoelectric chip, copper electrode sheet, drive end bearing bracket, matching layer, the first cable and the second cable, rear end cap, piezoelectric chip, copper electrode sheet and drive end bearing bracket form composite sandwich formula oscillator by fastening bolt, one end of the first cable and fastening bolt are electrically connected, one end of the second cable and copper electrode sheet are electrically connected, drive end bearing bracket lower surface is connected with matching layer, pad and sound transmitting window all closely cooperate with guard shield, and the upper surface of pad is close to the lower surface of matching layer, the lower surface of pad is close to the upper surface of sound transmitting window.
Further, the upper end of cylindrical tube is welded with ring flange, is provided with some screwed holes on ring flange.
Further, a side on cylindrical tube top is welded with Explosion proof joint, and described the first cable is connected with outside by Explosion proof joint with the second cable.
Further, ring flange, cylindrical tube, guard shield and horn mouth are metal material and make.
Further, sound transmitting window is that epoxy plate is made.
Further, between guard shield and cylindrical tube, be filled with fluid sealant.
Further, between cylindrical tube and composite sandwich formula oscillator, be filled with explosion-proof filler, this explosion-proof filler is quartz and resin compound.
Adopted after technique scheme, the utlity model has following beneficial effect:
1, copper electrode sheet is led electric energy on piezoelectric chip, piezoelectric chip can become mechanical energy electric energy conversion, produce vibration, form ultrasonic wave, the effect of matching layer is that ultrasonic wave has been propagated matching effect in drive end bearing bracket and air, overcome to greatest extent ultrasonic wave and be transmitted to airborne decay at metalwork, by adjusting the size of drive end bearing bracket and rear end cap, can determine the final frequency scope of transducer, frequency of the present utility model is 18KHz, when this frequency is propagated in air, attenuation coefficient is minimum, is applicable to long range measurements.
2, sound transmitting window is made by epoxy plate, through acoustics coupling, can make sound wave better in air, propagate.
3, adopt horn mouth design, horn mouth can limit the field angle of transmitting sound wave, prevents that sound wave from forming the large angle of departure, causes measuring inaccurate.
4, between cylindrical tube and composite sandwich formula oscillator, be filled with explosion-proof filler, this explosion-proof filler is quartz and resin compound, when piezoelectric chip vibrates, explosion-proof filler can completely cut off the contact of opening between external environment and core body oscillator effectively, within the electric spark that makes heat that transducer produces when normal work and form during at fault case and high temperature are all limited in seal casinghousing, extraneous flammable explosive gas is ignited preventing, thereby reach requirement of explosion proof; This explosion-proof mixture can also absorb the clutter producing in the non-emissive direction of composite oscillator simultaneously, thereby has improved transducer sensitivity and resolution ratio.
Accompanying drawing explanation
Fig. 1 is the front view of ultrasonic transducer for the range finding far away of coal mine environment that is applied to of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the top view of Fig. 1.
The specific embodiment
For content of the present utility model is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail below,
As shown in Fig. 1 ~ Fig. 3, a kind of range finding ultrasonic transducer far away that is applied to coal mine environment, comprise shell and core body oscillator, it is characterized in that: described shell comprises cylindrical tube 2, guard shield 3, horn mouth 4, pad 11 and sound transmitting window 12, the upper end of horn mouth 4 is welded on guard shield 3, guard shield 3 is threaded connection the lower end at cylindrical tube 2, described core body oscillator comprises fastening bolt 5, rear end cap 6, piezoelectric chip 7, copper electrode sheet 8, drive end bearing bracket 9, matching layer 10, the first cable 14 and the second cable 15, rear end cap 6, piezoelectric chip 7, copper electrode sheet 8 and drive end bearing bracket 9 form composite sandwich formula oscillator by fastening bolt 5, one end of the first cable 14 and fastening bolt 5 are electrically connected, one end of the second cable 15 and copper electrode sheet 8 are electrically connected, drive end bearing bracket 9 lower surfaces are connected with matching layer 10, pad 11 and sound transmitting window 12 all closely cooperate with guard shield 3, and the upper surface of pad 11 is close to the lower surface of matching layer 10, the lower surface of pad 11 is close to the upper surface of sound transmitting window 12, pad 11 can make core body oscillator effectively contact with sound transmitting window 12, sound transmitting window 12 can make sound wave better in air, propagate.
As shown in Fig. 2 ~ Fig. 3, the upper end of cylindrical tube 2 is welded with ring flange 1, is provided with some screwed holes on ring flange 1, by screwed hole, it can be fixed on other objects.
As shown in Fig. 1 ~ Fig. 2, a side on cylindrical tube 2 tops is welded with Explosion proof joint 13, and described the first cable 14 is connected with outside by Explosion proof joint 13 with the second cable 15.
Ring flange 1, cylindrical tube 2, guard shield 3 and horn mouth 4 are metal material and make.
In order to make sound wave better propagate in air, sound transmitting window 12 is made for epoxy plate.
Between guard shield 3 and cylindrical tube 2, be filled with fluid sealant, like this can be so that good seal between guard shield 3 and cylindrical tube 2 avoids extraneous flammable explosive gas to enter in cylindrical tube 2.
As shown in Figure 2, between cylindrical tube 2 and composite sandwich formula oscillator, be filled with explosion-proof filler, this explosion-proof filler is quartz and resin compound, when piezoelectric chip 7 vibration, explosion-proof filler can completely cut off the contact of opening between external environment and core body oscillator effectively, within the electric spark that makes heat that transducer produces when normal work and form during at fault case and high temperature are all limited in seal casinghousing, extraneous flammable explosive gas are ignited preventing, thereby reach requirement of explosion proof; This explosion-proof mixture can also absorb the clutter producing in the non-emissive direction of composite oscillator simultaneously, thereby has improved transducer sensitivity and resolution ratio.
Operation principle of the present utility model is as follows:
Above-described specific embodiment; technical problem, technical scheme and beneficial effect that the utility model is solved further describe; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a range finding ultrasonic transducer far away that is applied to coal mine environment, comprise shell and core body oscillator, it is characterized in that: described shell comprises cylindrical tube (2), guard shield (3), horn mouth (4), pad (11) and sound transmitting window (12), the upper end of horn mouth (4) is welded on guard shield (3), guard shield (3) is threaded connection the lower end in cylindrical tube (2), described core body oscillator comprises fastening bolt (5), rear end cap (6), piezoelectric chip (7), copper electrode sheet (8), drive end bearing bracket (9), matching layer (10), the first cable (14) and the second cable (15), rear end cap (6), piezoelectric chip (7), copper electrode sheet (8) and drive end bearing bracket (9) form composite sandwich formula oscillator by fastening bolt (5), one end of the first cable (14) and fastening bolt (5) are electrically connected, one end of the second cable (15) and copper electrode sheet (8) are electrically connected, drive end bearing bracket (9) lower surface is connected with matching layer (10), pad (11) and sound transmitting window (12) all closely cooperate with guard shield (3), and the upper surface of pad (11) is close to the lower surface of matching layer (10), the lower surface of pad (11) is close to the upper surface of sound transmitting window (12).
2. the range finding ultrasonic transducer far away that is applied to coal mine environment according to claim 1, is characterized in that: the upper end of cylindrical tube (2) is welded with ring flange (1), and ring flange is provided with some screwed holes on (1).
3. the range finding ultrasonic transducer far away that is applied to coal mine environment according to claim 1, it is characterized in that: a side on cylindrical tube (2) top is welded with Explosion proof joint (13), described the first cable (14) is connected with outside by Explosion proof joint (13) with the second cable (15).
4. the range finding ultrasonic transducer far away that is applied to coal mine environment according to claim 1, is characterized in that: ring flange (1), cylindrical tube (2), guard shield (3) and horn mouth (4) are metal material and make.
5. the range finding ultrasonic transducer far away that is applied to coal mine environment according to claim 1, is characterized in that: sound transmitting window (12) is made for epoxy plate.
6. the range finding ultrasonic transducer far away that is applied to coal mine environment according to claim 1, is characterized in that: between guard shield (3) and cylindrical tube (2), be filled with fluid sealant.
7. the range finding ultrasonic transducer far away that is applied to coal mine environment according to claim 1, is characterized in that: between cylindrical tube (2) and composite sandwich formula oscillator, be filled with explosion-proof filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582181.4U CN203508357U (en) | 2013-09-22 | 2013-09-22 | Ultrasonic transducer suitable for long-distance measurement and applicable to coal mine environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582181.4U CN203508357U (en) | 2013-09-22 | 2013-09-22 | Ultrasonic transducer suitable for long-distance measurement and applicable to coal mine environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203508357U true CN203508357U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320582181.4U Expired - Lifetime CN203508357U (en) | 2013-09-22 | 2013-09-22 | Ultrasonic transducer suitable for long-distance measurement and applicable to coal mine environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203508357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464360A (en) * | 2013-09-22 | 2013-12-25 | 江苏三恒科技股份有限公司 | Ultrasonic transducer for far distance measurement applied to coal mine environment |
-
2013
- 2013-09-22 CN CN201320582181.4U patent/CN203508357U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464360A (en) * | 2013-09-22 | 2013-12-25 | 江苏三恒科技股份有限公司 | Ultrasonic transducer for far distance measurement applied to coal mine environment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
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| CX01 | Expiry of patent term |