CN214748620U - Device for ultrasonic nondestructive testing of vacuum degree of vacuum tube - Google Patents
Device for ultrasonic nondestructive testing of vacuum degree of vacuum tube Download PDFInfo
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- CN214748620U CN214748620U CN202121030047.4U CN202121030047U CN214748620U CN 214748620 U CN214748620 U CN 214748620U CN 202121030047 U CN202121030047 U CN 202121030047U CN 214748620 U CN214748620 U CN 214748620U
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Abstract
The utility model discloses a device for ultrasonic nondestructive testing of vacuum tube vacuum degree, which comprises a vacuum tube body, a working platform, a supporting device and a testing device, wherein the supporting device is arranged on the working platform, the testing device is mainly used for testing the vacuum degree of the vacuum tube body, so that the vacuum tube body can be freely moved to the inner spacious area of the vacuum tube body to test the vacuum degree, thereby improving the testing precision, the utility model ensures the coaxiality of a testing component through a U-shaped frame, avoids the error generated when the vacuum tube body is independently fixed, and the testing component can effectively adjust the relative position of an ultrasonic transmitting device or an ultrasonic receiving device to the inner spacious area and the position of the vacuum tube body, avoids the metal or other media in a vacuum arc chamber from influencing the propagation speed of ultrasonic waves, thereby causing the measuring error and bringing the potential safety hazard, and simultaneously, a cushion ring is folded, thereby being convenient for reminding an operator to slow down the rotation speed of a screw rod, so as to accurately support the ultrasonic transmitting device or the ultrasonic receiving device to the cambered surface of the vacuum tube body.
Description
Technical Field
The utility model relates to a vacuum detection device technical field specifically is a guarantee the device of the higher ultrasonic wave nondestructive test vacuum tube vacuum of detection device axiality while.
Background
A vacuum tube is an electronic component that controls the flow of electrons in an electrical circuit. The electrodes involved in the operation are enclosed in a vacuum container (the tube wall is mostly glass), hence the name. In china, vacuum tubes are called "tubes".
The ultrasonic nondestructive detection device is used for detecting a component by utilizing an ultrasonic technology, and cannot damage the detected component, and the ultrasonic nondestructive detection device is a common device for detecting the vacuum degree of a vacuum tube and is arranged in a vacuum arc extinguish chamber;
at present, the detection device of current vacuum tube vacuum, utilize the ultrasonic wave to propagate used time in the distance of a vacuum tube length usually, judge the vacuum of vacuum tube, the propagation velocity of ultrasonic wave is different in the different materials, because the electrode of vacuum tube inside encapsulation or sheetmetal these can influence the propagation velocity of ultrasonic wave, it is inaccurate to lead to the measurement of corresponding vacuum, can't adapt to the detection to specific open area, and simultaneously, current detection device is usually with ultrasonic wave emitter and the solitary setting of ultrasonic wave receiver at the both ends of vacuum tube body, can't guarantee to align ultrasonic wave emitter and ultrasonic wave receiver, cause the deviation easily, for this reason, we propose the device of ultrasonic wave nondestructive test vacuum tube.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a detect device of accurate, convenient operation's ultrasonic wave nondestructive test vacuum tube vacuum to solve the problem that provides in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a device for ultrasonic nondestructive detection of vacuum degree of a vacuum tube comprises a vacuum tube body, a working platform, a supporting device and a detection device, wherein the supporting device is mainly used for supporting the vacuum tube body, the supporting device is installed on the working platform, the detection device is mainly used for detecting the vacuum degree of the vacuum tube body, the detection device is installed on the working platform, the detection device comprises a supporting column fixedly connected with the working platform, a polygonal sliding hole is formed in the supporting column, a polygonal block is connected in the polygonal sliding hole in a sliding manner, a threaded rod is connected to the polygonal block in a rotating manner through a bearing, a U-shaped support is fixed at one end, far away from the polygonal block, of the threaded rod, detection components are symmetrically fixed at two ends of the U-shaped support, a rotating sleeve in threaded connection with the threaded rod is sleeved outside the supporting column in a rotating manner, the rotary sleeve is characterized in that a limiting ring is fixed at one end of the rotary sleeve, a gear ring is fixed outside the rotary sleeve, a worm is meshed with the gear ring, the worm is rotatably connected with a supporting plate fixedly connected with the working platform through a bearing, and a rocking handle is fixed at one end of the worm.
Preferably, the detection assembly includes the fixed block with U type support one end fixed connection, threaded connection has the lead screw on the fixed block, the vacuum tube body was kept away from to the lead screw one end is fixed with the knob, and the other end is fixed with the rotation post, the rotation post rotates and is connected with the rotating turret, threaded connection has the nut on the lead screw, the nut is equipped with two, two one of the nut and fixed block laminating, the one end that the lead screw was kept away from to the rotating turret is connected with the installation component, through the locking effect of two nuts among the detection assembly, can effectually guarantee the lead screw and adjust the firm after the position, avoid rocking of vacuum tube body to touch the lead screw, arouse that the lead screw is not hard up.
Preferably, the installation component includes the installation piece with rotating turret fixed connection, it is fixed with ultrasonic emission device or ultrasonic wave receiving arrangement to correspond on the installation piece, be fixed with the cushion ring on the installation piece, can effectually adjust ultrasonic emission device or ultrasonic wave receiving arrangement's relative position to the position of the inside spacious district and of vacuum tube body through the installation component, avoid the indoor metal of vacuum arc or other medium influence ultrasonic wave propagation velocity, lead to measuring error, bring the potential safety hazard.
Preferably, strutting arrangement fixes the support column on work platform including the symmetry, the one end that work platform was kept away from to the support column all is fixed with V type piece, V type piece and vacuum tube body surface laminating, the V type piece that sets up through the symmetry can adapt to the placing of the vacuum tube body of different diameters, strong adaptability.
Preferably, the cushion ring is made of transparent silica gel, and when the ultrasonic transmitting device or the ultrasonic receiving device is close to the arc surface of the vacuum pipe body, the cushion ring is folded, so that an operator is reminded of slowing down the rotating speed of the screw rod, and the ultrasonic transmitting device or the ultrasonic receiving device can be supported to the arc surface of the vacuum pipe body accurately.
Preferably, the knob is provided with anti-slip lines to increase friction force during manual rotation.
Preferably, be equipped with the rubber protection pad on the V type piece, be convenient for protect the vacuum tube body, prevent glass type vacuum tube body gouge damage.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a U type frame guarantees among the determine module ultrasonic emission device or the axiality of ultrasonic receiving device mounted position, the error that produces when avoiding alone fixing, and determine module can be effectual with ultrasonic emission device or ultrasonic receiving device's relative position adjustment to the inside spacious district and the position of vacuum tube body, avoid the indoor metal of vacuum arc or other medium influence ultrasonic wave propagation velocity, lead to measuring error, bring the potential safety hazard, and simultaneously, cushion ring fold, be convenient for remind the operator to relax lead screw slew velocity, so that the cambered surface department to the vacuum tube body is supported to ultrasonic emission device or ultrasonic receiving device to the accuracy.
2. The utility model discloses a manual rocking handle drives the worm and rotates, and then drives the ring gear and rotate for the commentaries on classics cover rotates, drives the threaded rod and slides and then can the efficient with U type frame lifting to the corresponding position of vacuum tube body, convenient and fast along the polygon slide opening on the support column.
3. The utility model discloses a be equipped with the rubber protection pad that is convenient for carry out the protection to the vacuum tube body on the V type piece, prevent glass type vacuum tube body gouge damage.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the detecting device of the present invention;
FIG. 3 is an enlarged view of area A of FIG. 2;
FIG. 4 is an enlarged view of area B of FIG. 2;
FIG. 5 is an enlarged view of area C of FIG. 2;
FIG. 6 is a schematic view of the detecting device of the present invention in a partial sectional view;
fig. 7 is a schematic structural view of a state that the edge of the cushion ring is coated with a colored ribbon.
In the figure: 1-a vacuum tube body; 2-a working platform; 3-a support device; 4-a detection device; 5-a support column; 6-V-shaped blocks; 7-a support column; 8-U-shaped brackets; 9-a detection component; 10-fixing blocks; 11-a screw rod; 12-a knob; 13-rotating the column; 14-a turret; 15-mounting a block; 16-an ultrasonic wave emitting device; 17-an ultrasonic receiving device; 18-a cushion ring; 19-a nut; 20-mounting the assembly; 21-polygonal slide hole; 22-polygonal blocks; 23-a threaded rod; 24-rotating sleeve; 25-a limit ring; 26-a gear ring; 27-a worm; 28-a support plate; 29-rocking handle.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
Referring to fig. 1-5, the present invention provides a technical solution: a device for ultrasonic nondestructive detection of vacuum degree of a vacuum tube comprises a vacuum tube body 1, a working platform 2, a supporting device 3 and a detection device 4, wherein the supporting device 3 is mainly used for supporting the vacuum tube body 1, the supporting device 3 is installed on the working platform 2, the detection device 4 is mainly used for detecting the vacuum degree of the vacuum tube body 1, the detection device 4 is installed on the working platform 2, the detection device 4 comprises a supporting column 7 fixedly connected with the working platform 2, a polygonal sliding hole 21 is formed in the supporting column 7, a polygonal block 22 is slidably connected in the polygonal sliding hole 21, a threaded rod 23 is rotatably connected onto the polygonal block through a bearing, a U-shaped support 8 is fixed at one end, far away from the polygonal block, of the threaded rod, two detection assemblies 9 are symmetrically fixed at two ends of the U-shaped support 8, the support column 7 is sleeved with a rotating sleeve 24 in a rotating mode, the rotating sleeve is in threaded connection with a threaded rod, one end of the rotating sleeve is fixed with a limiting ring 25, a gear ring 26 is fixed outside the rotating sleeve, the gear ring 26 is meshed with a worm 27, the worm 27 is connected with a support plate 28 fixedly connected with the working platform 2 in a rotating mode through a bearing, and one end of the worm 27 is fixed with a rocking handle 29.
Wherein, the detection assembly 9 includes the fixed block 10 with 8 one end fixed connection of U type support, threaded connection has lead screw 11 on the fixed block 10, the lead screw 11 is kept away from the one end of vacuum tube body 1 and is fixed with knob 12, and the other end is fixed with column 13, column 13 rotates and is connected with rotating turret 14, threaded connection has nut 19 on the lead screw 11, nut 19 is equipped with two, two one of nut 19 is laminated with fixed block 10, the one end that the rotating turret 14 keeps away from lead screw 11 is connected with installation component 20, through the locking effect of two nuts 19 among the detection assembly 9, can effectually guarantee that lead screw 11 adjusts the firm after the position, avoid rocking of vacuum tube body 1 to touch lead screw 11, arouse that lead screw 11 is not hard up.
Wherein, installation component 20 includes the installation piece 15 with rotating turret fixed connection, it is fixed with ultrasonic emission device 16 or ultrasonic receiving device 17 to correspond on the installation piece 15, be fixed with cushion ring 18 on the installation piece 15, can effectually adjust ultrasonic emission device 16 or ultrasonic receiving device 17's relative position to the position of the inside spacious district and of vacuum tube body 1 through installation component 20, avoid the indoor metal of vacuum arc or other medium influence ultrasonic wave propagation velocity, lead to measuring error, bring the potential safety hazard.
In addition, the cushion ring 18 is made of transparent silica gel, when the ultrasonic wave emitting device 16 or the ultrasonic wave receiving device 17 approaches the arc surface of the vacuum tube body 1, the cushion ring 18 is folded, so that an operator is reminded to slow down the rotation speed of the screw rod 11, and the ultrasonic wave emitting device 16 or the ultrasonic wave receiving device 17 is supported to the arc surface of the vacuum tube body 1 accurately.
Meanwhile, in order to increase the friction force during manual rotation, anti-skid lines are arranged on the knob.
In this scheme, the operating principle of the detection device 4 is as follows: first place vacuum tube body 1 on strutting arrangement 3, then manual rocking handle 29 of shaking drives worm 27 and rotates, and then drive ring gear 26 and rotate, make and change cover 24 and rotate, it slides to drive threaded rod 23 along polygon slide opening 21 on support column 7, adjust U type support 8 to corresponding position, manual rotation knob 12, lead screw 11 rotates in fixed block 10, and drive and rotate the relative rotating turret 14 rotation of post 13, promote installation piece 15 and be close to vacuum tube body 1, when being close to a certain position, cushion ring 18 takes place the fold, at this moment, the operator slows down lead screw 11 slew velocity, so that the cambered surface department to vacuum tube body 1 is supported to ultrasonic emission device 16 or ultrasonic receiving device 17 to the accuracy, avoid rotating too fast misoperation, lead to vacuum tube body 1 damage.
Example two
Referring to fig. 1, 2 and 6, in this embodiment, to further explain the first embodiment, an apparatus for ultrasonic non-destructive testing of vacuum degree of a vacuum tube includes a vacuum tube body 1, a working platform 2, a supporting device 3 and a detecting device 4, where the supporting device 3 is mainly used for supporting the vacuum tube body 1, the supporting device 3 is installed on the working platform 2, the detecting device 4 is mainly used for detecting the vacuum degree of the vacuum tube body 1, the detecting device 4 is installed on the working platform 2, the detecting device 4 includes a supporting column 7 fixedly connected with the working platform 2, a polygonal sliding hole 21 is formed in the supporting column 7, a polygonal block 22 is slidably connected in the polygonal sliding hole 21, a threaded rod 23 is rotatably connected to the polygonal block through a bearing, and a U-shaped bracket 8 is fixed at one end of the threaded rod away from the polygonal block, the detection assembly 9 is symmetrically fixed at two ends of the U-shaped support 8, the supporting column 7 is sleeved with a rotating sleeve 24 in a rotating mode, the rotating sleeve is in threaded connection with a threaded rod, a limiting ring 25 is fixed at one end of the rotating sleeve, a gear ring 26 is fixed outside the rotating sleeve, the gear ring 26 is meshed with a worm 27, the worm 27 is rotatably connected with a supporting plate 28 fixedly connected with the working platform 2 through a bearing, and a rocking handle 29 is fixed at one end of the worm 27.
And meanwhile, a rubber protective pad which is convenient for protecting the vacuum tube body 1 is arranged on the V-shaped block 6, so that the glass vacuum tube body 1 is prevented from being damaged by knocking.
In this scheme, the operating principle of the detection device 4 is as follows: first place vacuum tube body 1 on two V type pieces 6, then hand wave rocking handle 29 and drive worm 27 and rotate, and then drive ring gear 26 and rotate, make and change cover 24 and rotate, it slides to drive threaded rod 23 along polygon slide opening 21 on support column 7, adjust U type support 8 to corresponding position, manual rotation knob 12, lead screw 11 rotates in fixed block 10, and drive and rotate the relative rotating turret 14 rotation of post 13, promote installation piece 15 and be close to vacuum tube body 1, when being close to a certain position, cushion ring 18 takes place the fold, at this moment, the operator slows down lead screw 11 slew velocity, so that accurate with ultrasonic emitter 16 or ultrasonic receiver 17 support to the cambered surface department of vacuum tube body 1, avoid rotating too fast misoperation, lead to vacuum tube body 1 damage.
Example 3
Referring to fig. 7, in this embodiment, further explaining other embodiments, a device for ultrasonic non-destructive testing of vacuum degree of a vacuum tube includes a vacuum tube body 1, a working platform 2, a supporting device 3 and a detecting device 4, where the supporting device 3 is mainly used for supporting the vacuum tube body 1, the supporting device 3 is installed on the working platform 2, the detecting device 4 is mainly used for detecting the vacuum degree of the vacuum tube body 1, the detecting device 4 is installed on the working platform 2, the detecting device 4 includes a supporting pillar 7 fixedly connected to the working platform 2, a polygonal sliding hole 21 is formed in the supporting pillar 7, a polygonal block 22 is slidably connected in the polygonal sliding hole 21, a threaded rod 23 is rotatably connected to the polygonal block through a bearing, and a U-shaped bracket 8 is fixed at one end of the threaded rod, which is far away from the polygonal block, the detection assembly 9 is symmetrically fixed at two ends of the U-shaped support 8, the supporting column 7 is sleeved with a rotating sleeve 24 in a rotating mode, the rotating sleeve is in threaded connection with a threaded rod, a limiting ring 25 is fixed at one end of the rotating sleeve, a gear ring 26 is fixed outside the rotating sleeve, the gear ring 26 is meshed with a worm 27, the worm 27 is rotatably connected with a supporting plate 28 fixedly connected with the working platform 2 through a bearing, and a rocking handle 29 is fixed at one end of the worm 27.
Wherein, the detection assembly 9 includes the fixed block 10 with 8 one end fixed connection of U type support, threaded connection has lead screw 11 on the fixed block 10, the lead screw 11 is kept away from the one end of vacuum tube body 1 and is fixed with knob 12, and the other end is fixed with column 13, column 13 rotates and is connected with rotating turret 14, threaded connection has nut 19 on the lead screw 11, nut 19 is equipped with two, two one of nut 19 is laminated with fixed block 10, the one end that the rotating turret 14 keeps away from lead screw 11 is connected with installation component 20, through the locking effect of two nuts 19 among the detection assembly 9, can effectually guarantee that lead screw 11 adjusts the firm after the position, avoid rocking of vacuum tube body 1 to touch lead screw 11, arouse that lead screw 11 is not hard up.
Wherein, installation component 20 includes the installation piece 15 with rotating turret fixed connection, it is fixed with ultrasonic emission device 16 or ultrasonic receiving device 17 to correspond on the installation piece 15, be fixed with cushion ring 18 on the installation piece 15, can effectually adjust ultrasonic emission device 16 or ultrasonic receiving device 17's relative position to the position of the inside spacious district and of vacuum tube body 1 through installation component 20, avoid the indoor metal of vacuum arc or other medium influence ultrasonic wave propagation velocity, lead to measuring error, bring the potential safety hazard.
In addition, cushion ring 18 adopts transparent silica gel to make, can paint colored ribbon dress pigment simultaneously at 18 outward flanges of cushion ring, so that better observation cushion ring 18 is enough to take place the fold at the removal in-process, when ultrasonic emission device 16 or ultrasonic receiving device 17 are close to vacuum tube body 1 cambered surface, 18 folds of cushion ring drive the colored ribbon and change, be convenient for observe, be convenient for remind the operator to slow down 11 slew velocity of lead screw, so that the accuracy supports ultrasonic emission device 16 or ultrasonic receiving device 17 to vacuum tube body 1's cambered surface department.
In this scheme, the operating principle of the detection device 4 is as follows: first place vacuum tube body 1 on strutting arrangement 3, then manual rocking handle 29 drives worm 27 and rotates, and then drive ring gear 26 and rotate, make and change cover 24 and rotate, it slides along polygon slide opening 21 on support column 7 to drive threaded rod 23, adjust U type support 8 to corresponding position, manual rotation knob 12, lead screw 11 rotates in fixed block 10, and drive and rotate the relative rotating turret 14 of post 13 and rotate, promote installation piece 15 and be close to vacuum tube body 1, when being close to a certain position, cushion ring 18 takes place the fold, simultaneously the colored ribbon on the cushion ring 18 can warp, make things convenient for the observer to observe, at this moment, the operator slows down lead screw 11 slew velocity, so that accurate with ultrasonic transmitter 16 or ultrasonic receiver 17 support to the cambered surface department of vacuum tube body 1, avoid rotating too fast misoperation, lead to vacuum tube body 1 damage.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a device of ultrasonic wave nondestructive test vacuum tube vacuum, includes vacuum tube body (1) and work platform (2), its characterized in that still includes:
the supporting device (3) is used for supporting the vacuum pipe body (1), and the supporting device (3) is arranged on the working platform (2);
the detection device (4) is used for detecting the vacuum degree of the vacuum pipe body (1), the detection device (4) is installed on the working platform (2), the detection device (4) comprises a support column (7) fixedly connected with the working platform (2), a polygonal sliding hole (21) is formed in the support column (7), a polygonal block (22) is connected in the polygonal sliding hole (21) in a sliding mode, a threaded rod (23) is connected to the polygonal block in a rotating mode through a bearing, a U-shaped support (8) is fixed to one end, away from the polygonal block, of the threaded rod, detection assemblies (9) are symmetrically fixed to two ends of the U-shaped support (8), a rotating sleeve (24) in threaded connection with the threaded rod is sleeved outside the support column (7) in a rotating mode, a limiting ring (25) is fixed to one end of the rotating sleeve, a gear ring (26) is fixed outside the rotating sleeve, and a worm (27) is meshed with the gear ring (26), the worm (27) is rotatably connected with a supporting plate (28) fixedly connected with the working platform (2) through a bearing, and one end of the worm (27) is fixed with a rocking handle (29).
2. The apparatus of claim 1, wherein the vacuum tube vacuum degree detector comprises: detection component (9) include with U type support (8) one end fixed connection's fixed block (10), threaded connection has lead screw (11) on fixed block (10), the one end that vacuum tube body (1) was kept away from in lead screw (11) is fixed with knob (12), and the other end is fixed with and rotates post (13), it rotates and is connected with rotating turret (14) to rotate post (13), threaded connection has nut (19) on lead screw (11), nut (19) are equipped with two, two one in nut (19) and fixed block (10) laminating, the one end that lead screw (11) were kept away from in rotating turret (14) is connected with installation component (20).
3. The apparatus of claim 2, wherein the vacuum tube vacuum degree detector comprises: the mounting assembly (20) comprises a mounting block (15) fixedly connected with the rotating frame, an ultrasonic transmitting device (16) or an ultrasonic receiving device (17) is correspondingly fixed on the mounting block (15), and a cushion ring (18) is fixed on the mounting block (15).
4. The apparatus of claim 1, wherein the vacuum tube vacuum degree detector comprises: the supporting device (3) comprises supporting columns symmetrically fixed on the working platform (2), V-shaped blocks (6) are fixed at one ends, far away from the working platform (2), of the supporting columns, and the V-shaped blocks (6) are attached to the surface of the vacuum pipe body (1).
5. The apparatus of claim 3, wherein the vacuum tube vacuum degree detector comprises: the cushion ring (18) is made of transparent silica gel.
6. The apparatus of claim 2, wherein the vacuum tube vacuum degree detector comprises: the knob (12) is provided with anti-skid lines.
7. The apparatus of claim 4, wherein the vacuum tube vacuum degree detector comprises: and a rubber protective pad is arranged on the V-shaped block (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121030047.4U CN214748620U (en) | 2021-05-14 | 2021-05-14 | Device for ultrasonic nondestructive testing of vacuum degree of vacuum tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121030047.4U CN214748620U (en) | 2021-05-14 | 2021-05-14 | Device for ultrasonic nondestructive testing of vacuum degree of vacuum tube |
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| CN214748620U true CN214748620U (en) | 2021-11-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114964614A (en) * | 2022-07-28 | 2022-08-30 | 成都睿宝电子科技有限公司 | Ultrasonic vacuum measurement gauge pipe |
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2021
- 2021-05-14 CN CN202121030047.4U patent/CN214748620U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114964614A (en) * | 2022-07-28 | 2022-08-30 | 成都睿宝电子科技有限公司 | Ultrasonic vacuum measurement gauge pipe |
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