CN203011448U - Ultrasonic transducer online replacement and precise reset device - Google Patents
Ultrasonic transducer online replacement and precise reset device Download PDFInfo
- Publication number
- CN203011448U CN203011448U CN 201220713592 CN201220713592U CN203011448U CN 203011448 U CN203011448 U CN 203011448U CN 201220713592 CN201220713592 CN 201220713592 CN 201220713592 U CN201220713592 U CN 201220713592U CN 203011448 U CN203011448 U CN 203011448U
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- China
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- ultrasonic transducer
- leading screw
- leadscrew
- dynamic pressure
- adjustment bar
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Abstract
An ultrasonic transducer online replacement and precise reset device comprises a seal structure, a positioning structure and a replacement device. The seal structure comprises a ball valve, an upper air seal dynamic pressure O-shaped ring and a lower air seal dynamic pressure O-shaped ring, wherein the upper air seal dynamic pressure O-shaped ring is disposed between an upper connection head and a movable regulating level, and the lower air seal dynamic pressure O-shaped ring is disposed between a lower connection head and a movable regulating level; the positioning structure comprises an annular step formed by the inward bulging of the front end of the lower connection head as well as an annular step formed by the inward recessing of the movable regulating level; the replacement device comprises a disassembling leadscrew and a leadscrew bracket; the disassembling leadscrew is a hollow tube; internal threads of an upper end of the disassembling leadscrew match with external threads of an upper end head of the movable regulating level; external threads on the periphery of the disassembling leadscrew match with screw holes on the top of the leadscrew bracket; the leadscrew bracket is also a hollow tube; and internal threads disposed on the lower end of the leadscrew bracket match with external threads of an upper end head of the upper connection head. When the ultrasonic transducer online replacement and precise reset device needs maintenance and replacement to be reset and reinstalled, the movable regulating level is positioned on the annual step, an ultrasonic transducer is reinstalled in the original position, and produced zero drift and error is within instrument accuracy range, and thus, normal operation and accuracy of an ultrasonic flowmeter is guaranteed.
Description
Technical field
The utility model is relevant with ultrasonic flow meter; specifically; be the accurate resetting means of the online replacing of ultrasonic transducer in a kind of ultrasonic flow meter, be used for ultrasonic flow meter and do not shut down on-bne repair, maintenance and the replacing of carrying out ultrasonic transducer under work condition state.
Background technology
Ultrasonic flow meter becomes the first-selected instrument of gas dosing gradually, as its main parts ultrasonic transducer be hold most flimsy.Overhaul at the scene, safeguard and when changing, generally measured pipeline will be stopped the supple of gas or steam, otherwise construction is very difficult, even can't carry out.In, in bigbore flow metering, maintenance is especially protruded with both contradiction of running.At present, many ultrasonic flow meters manufacturer has considered these problems, and has done many work, and some product also can carry out the online ultrasonic transducer of changing under operating mode.But its complex structure, operating difficulties, especially do not consider the orientation problem of resetting, when reinstalling ultrasonic transducer after maintenance, maintenance and replacing, new ultrasonic transducer can't be arranged on original position, cause ultrasound wave travel path in non-metering fluid to change, namely change the boundary condition of ultrasonic flow meter metering, thereby produced zero point drift, affected normal operation and the degree of accuracy of ultrasonic flow meter.
Summary of the invention
The utility model is the online replacing ultrasonic transducer difficulty that exists for existing ultrasonic flow meter and the improvement of making, make ultrasonic flow meter can on-bne repair, maintenance and replacing ultrasonic transducer, and can precisely reset.
The utility model proposes following technical scheme: the accurate resetting means of the online replacing of a kind of ultrasonic transducer, comprise hermetically-sealed construction, the location structure in the transducer stationary installation that is located at ultrasonic flow meter and be retained in the ultrasonic transducer stationary installation outer change device, it is characterized in that:
Described hermetically-sealed construction comprises upper hermetic seal dynamic pressure zero shape circle and the zero shape circle of the lower hermetic seal dynamic pressure between lower union joint and activity adjustment bar between ball valve, upper binding head and the activity adjustment bar that is arranged in the stationary installation stage casing;
Described location structure is comprised of to the inside recessed ring-shaped step of projecting inward ring-shaped step and activity adjustment bar relevant position the front end at lower union joint;
The described device that changes is comprised of a dismounting leading screw and a leading screw support, the dismounting leading screw is tubular structure, its lower end has internal thread to match with activity adjustment bar upper end external thread, dismounting leading screw periphery has external thread to match with the screw of leading screw cantilever tip, the leading screw support is also tubular structure, its lower end has internal thread to match with the upper end external thread of upper binding head, and the dismounting leading screw passes the screw on top in the leading screw support.
the utility model has the advantage of, each maintenance, when maintenance and replacing ultrasonic transducer, be loaded with ultrasonic transducer by the activity adjustment bar and pass in and out its stationary installation, because just being stuck in convex annular, annular recessed step goes out on step, resetting after each turnover, the activity adjustment bar all can be positioned at the ring-shaped step place of location structure, its mutual site error can reach on the 0.01mm order of magnitude, thereby guaranteed that fully new ultrasonic transducer can be reinstalled on original position, the variation of ultrasound wave travel path in non-metering fluid also just can be controlled on the 0.01mm order of magnitude, its zero point drift that produces with and the error that produces fully in the degree of accuracy of instrument (1% or 0.5%) scope own, normal operation and the degree of accuracy of ultrasonic flow meter have namely been guaranteed.
Description of drawings
Fig. 1 is that ultrasonic flow meter is arranged on the working position schematic diagram.
Fig. 2 is the cut-open view of Fig. 1.
Fig. 3 is the enlarged diagram of location structure in Fig. 2.
Fig. 4 is for changeing apparatus structure and work schematic diagram.
In figure, mark is expressed the meaning: transducer holder 1, ultrasonic transducer 2, O-ring seal 3, ultrasonic transducer stationary installation 4, Explosion-proof cap 5, signal socket connector 6, cable seal filler 7, plain cushion 8, Explosion proof joint 9, cable 10, lower hermetic seal dynamic pressure zero shape circle 11, lower union joint 12, polytetrafluoroethylsealed sealed pad 13, activity adjustment bar 14, internal-thread spherical valve 15, upper hermetic seal dynamic pressure zero shape circle 16, upper binding head 17, location structure 18 changes device 19, dismounting leading screw 20, leading screw support 21, handle 22, recessed step 23 is protruded step 24.
Embodiment
Be described in further detail below in conjunction with embodiment of the present utility model and accompanying drawing thereof.
Embodiment as shown in Figure 1 is mounted in the ultrasonic flow meter of working position, its ultrasonic transducer is online change accurate resetting means comprise be located at hermetically-sealed construction, the location structure 18 in ultrasonic transducer stationary installation 4 and be retained in ultrasonic transducer stationary installation 4 outer change device 19.Stationary installation 4 lower ends that are loaded with ultrasonic transducer 2 are connected on transducer holder 1, and stationary installation 4 upper ends connect Explosion-proof caps 5, between stationary installation 4 and transducer holder 1, all be provided with O-ring seal 3 between stationary installation 4 and Explosion-proof cap 5.Simultaneously referring to Fig. 2, an activity adjustment bar 14 is arranged in stationary installation 4, transducer 2 just hangs over activity adjustment bar 14 lower ends, activity adjustment bar 14 upper ends are provided with signal socket connector 6, the cable 10 that connects signal socket connector 6 passes the signal that Explosion-proof cap 5 outputs record, and from bottom to top is provided with successively cable seal filler 7, plain cushion 8 and Explosion proof joint 9 between cable 10 and Explosion-proof cap 5.The present embodiment has been set up upper binding head 17 and lower union joint 12 at place, two ends, the nearly up and down of activity adjustment bar 14, wherein be threaded Explosion-proof cap 5 and stationary installation 4 of upper binding head 17; Lower union joint 12 be threaded stationary installation 4 and transducer holder 1.Between upper binding head 17 and stationary installation 4, all accompany polytetrafluoroethylsealed sealed pad 13 between lower union joint 12 and stationary installation 4.Be provided with hermetic seal dynamic pressure zero shape circle 16 between activity adjustment bar 14 and upper binding head 17, be provided with lower hermetic seal dynamic pressure zero shape circle 11 between activity adjustment bar 14 and lower union joint 12, described upper hermetic seal dynamic pressure zero shape circle 16 and lower hermetic seal dynamic pressure zero shape circle 11 should respectively arrange twice, can obtain well sealing and equilibrium activity.The present embodiment is provided with internal-thread spherical valve 15 at stationary installation 4 middle parts, and in normal operation, activity adjustment bar 14 interts in the valve opening of internal-thread spherical valve 15; If maintain and replace transducer 2 in the time of need to pulling out activity adjustment bar 14, can cut out internal-thread spherical valve 15 to keep sealing state.The present embodiment is provided with location structure 18, by the front end of lower union joint 12 to projecting inward ring-shaped step 24 and activity adjustment bar 14 relevant positions inwardly recessed ring-shaped step 23 form, the mode accurate positioning that coordinates with machinery, reset reliable.
The device 19 that changes that the present embodiment is provided with is comprised of a dismounting leading screw 20 and a leading screw support 21, dismounting leading screw 20 is tubular structure, its lower end has internal thread to match with activity adjustment bar 14 upper end external threads, dismounting leading screw 20 peripheries have external thread to match with the screw on leading screw support 21 tops, leading screw support 21 is also tubular structure, its lower end has internal thread to match with the upper end external thread of upper binding head 17, and dismounting leading screw 20 passes the screw on top in the leading screw support 21.The top generalized case of dismounting leading screw 20 should configure handle 22.
Each maintenance, safeguard and when changing ultrasonic transducer 2, all use to change device 19 and make activity adjustment bar 14 carry ultrasonic transducer 2 turnover stationary installations 4.
Take out ultrasonic transducer 2: first remove the members that are connected such as Explosion-proof cap 5, cable seal filler 7, plain cushion 8, Explosion proof joint 9 and cable 10; activity adjustment bar 14 and dismounting leading screw 20 are integrated through thread connection; leading screw support 21 is positioned at upper binding head 17 through thread connection; then turning handle 22 is mentioned activity adjustment bar 14 and ultrasonic transducer 2 slowly; sealing function due to upper hermetic seal dynamic pressure zero shape circle 16; guaranteed that the gas in pipeline can not leak; so do not need in pipeline to have guaranteed to shut down, carried out aforesaid operations in the situation of working on.When ultrasonic transducer 2 arrives internal-thread spherical valve 15 top, close internal-thread spherical valve 15, continue to mention activity adjustment bar 14 until take out ultrasonic transducer 2.
The process that maintenance, the rear dress again of replacing precisely reset is as follows:
1, with detect, maintenance or the ultrasonic transducer 2 more finished changing, be fixed on activity adjustment bar 14 lower ends, and activity adjustment bar 14 is integrated through thread connection with dismounting leading screw 20.
2, with ultrasonic transducer 2, activity adjustment bar 14, the dismounting leading screw 20 that is connected as one, after leading screw support 21 is located, slowly put into upper binding head 17.Rotate dismounting leading screw 20, ultrasonic transducer 2 by upper hermetic seal dynamic pressure zero shape circle 16, enters the top of internal-thread spherical valve 15 with 14 rotations of activity adjustment bar.
3, turn on internal-thread spherical valve 15.Guaranteed that due to the sealing function of upper hermetic seal dynamic pressure zero shape circle 16 gas in pipeline can not leak this moment, so do not need in pipeline to have guaranteed to shut down, in the situation of working on, carries out aforesaid operations.
4, continue to rotate dismounting leading screw 20, ultrasonic transducer 2 moves downward continuing with activity adjustment bar 14, until pass internal-thread spherical valve 15 and lower hermetic seal dynamic pressure zero shape circle 11, arrives location structure 18 places.
Because just being stuck in convex annular, annular recessed step 23 goes out on step 24, activity adjustment bar 14 is positioned in 18 ring-shaped step place, site error is only on the 0.01mm order of magnitude, thereby guaranteed that fully new ultrasonic transducer 2 can be reinstalled on original position, thereby guaranteed ultrasonic transducer 2 precisely resetting in multiple process of assembling.
5, will change device 19 and pull down, and cable 10 and signal socket connector 6 will be connected, load onto Explosion-proof cap 5, then Explosion proof joint 9 is tightened, so far, multiple process of assembling finishes.
Claims (3)
1. a ultrasonic transducer is changed accurate resetting means online, comprise hermetically-sealed construction, the location structure in the ultrasonic transducer stationary installation (4) that is located at ultrasonic flow meter and be retained in ultrasonic transducer stationary installation (4) outer change device (19), it is characterized in that:
Described hermetically-sealed construction comprises that upper hermetic seal dynamic pressure zero shape circle (16) between ball valve (15), upper binding head (17) and the activity adjustment bar (14) that is arranged in stationary installation (4) stage casing and lower hermetic seal dynamic pressure zero shape between lower union joint (12) and activity adjustment bar (14) are enclosed (11);
Described location structure (18) is comprised of to the inside recessed ring-shaped step (23) of projecting inward ring-shaped step (24) and activity adjustment bar (14) relevant position the front end at lower union joint (12);
The described device (19) that changes is comprised of a dismounting leading screw (20) and a leading screw support (21), dismounting leading screw (20) is tubular structure, its lower end has internal thread to match with activity adjustment bar (14) upper end external thread, dismounting leading screw (20) periphery has external thread to match with the screw on leading screw support (21) top, leading screw support (21) is also tubular structure, its lower end has internal thread to match with the upper end external thread of upper binding head (17), and dismounting leading screw (20) passes the screw on top in the leading screw support (21).
2. the accurate resetting means of the online replacing of ultrasonic transducer according to claim 1, is characterized in that the upper hermetic seal dynamic pressure zero shape circle (16) between upper binding head (17) and activity adjustment bar (14) is provided with twice.
3. the accurate resetting means of the online replacing of ultrasonic transducer according to claim 1, is characterized in that the lower hermetic seal dynamic pressure zero shape circle (11) between lower union joint (12) and activity adjustment bar (14) is provided with twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220713592 CN203011448U (en) | 2012-12-21 | 2012-12-21 | Ultrasonic transducer online replacement and precise reset device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220713592 CN203011448U (en) | 2012-12-21 | 2012-12-21 | Ultrasonic transducer online replacement and precise reset device |
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| Publication Number | Publication Date |
|---|---|
| CN203011448U true CN203011448U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220713592 Expired - Fee Related CN203011448U (en) | 2012-12-21 | 2012-12-21 | Ultrasonic transducer online replacement and precise reset device |
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| CN (1) | CN203011448U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662207A (en) * | 2018-07-13 | 2018-10-16 | 王梓骥 | A kind of open and close method of pipeline valve assembly |
| CN111693104A (en) * | 2020-06-12 | 2020-09-22 | 常州酷特仪器仪表有限公司 | Thing networking bayonet ultrasonic wave meter |
-
2012
- 2012-12-21 CN CN 201220713592 patent/CN203011448U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662207A (en) * | 2018-07-13 | 2018-10-16 | 王梓骥 | A kind of open and close method of pipeline valve assembly |
| CN111693104A (en) * | 2020-06-12 | 2020-09-22 | 常州酷特仪器仪表有限公司 | Thing networking bayonet ultrasonic wave meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20201221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |