CN203037302U - Novel anti-scaling ultrasonic flow meter - Google Patents

Novel anti-scaling ultrasonic flow meter Download PDF

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Publication number
CN203037302U
CN203037302U CN 201220747045 CN201220747045U CN203037302U CN 203037302 U CN203037302 U CN 203037302U CN 201220747045 CN201220747045 CN 201220747045 CN 201220747045 U CN201220747045 U CN 201220747045U CN 203037302 U CN203037302 U CN 203037302U
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CN
China
Prior art keywords
cylinder hole
hole
locknut
connector
ultrasonic transducer
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Expired - Fee Related
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CN 201220747045
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Chinese (zh)
Inventor
陈宇
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陈宇
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Priority to CN 201220747045 priority Critical patent/CN203037302U/en
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Publication of CN203037302U publication Critical patent/CN203037302U/en
Expired - Fee Related legal-status Critical Current
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Abstract

A novel anti-scaling ultrasonic flow meter is characterized in that a vertical cylindrical hole is arranged at the lower end of the middle of a flow meter tube section, and a circular reflective antenna is installed in the vertical cylindrical hole. The flow meter has the advantages that the flow property of an ultrasonic wave flow sensor (tube section) is improved effectively, the metering accuracy and the maintainability of an ultrasonic wave heat meter are improved, the reflective antenna can be maintained and replaced in site, the reliability is improved, the service life is prolonged, the flow meter is suitable to the central heating situation, the problem that ultrasonic wave heat meter failures caused by water scaling caused by supplied hot water quality is solved, the national construction energy-saving metering charging policy is carried out, and the legal gauge metering accuracy and the flow property of water and heat supplying are improved.

Description

A kind of novel anti fouling ultrasonic flowmeter
(1) technical field:
The utility model relates to a kind of novel anti fouling ultrasonic flowmeter, is particularly suitable for central heating charge metering and uses the calorimeter application scenario.
(2) background technology:
High speed development with Chinese national economy; demand to resource is increasing; experienced since the global financial crisis; in order to guarantee the sustainable development of Chinese national economy; energy savings places on the agenda already; country has strengthened energy-conservation dynamics, has put into effect corresponding laws and regulations, and the central heating meterage is imperative.
The ultrasonic calorimeter of China's central heating meterage instrument, especially residents, along with improving constantly and the continuous enhancing of overall national strength of China's scientific and technological level, ultrasonic calorimeter begins to widely apply, and market share progressively enlarges.But, according to China's national situation, the heat supply quality problem, the mechanical type calorimeter being lost efficacy, ultrasonic calorimeter was lost efficacy, is not that the not problem of mechanical moving element is arranged, but abominable water quality makes mechanical calorimeter produce the motion fault, equally also makes ultrasonic calorimeter fault occur transmitting and receiving.
As everyone knows, the circulation way of ultrasound wave in medium pressed waveform and divided, and generally has following severally, and compressional wave, shear wave, surface wave and Lamb wave are because the modulus of shearing of gas and liquid is zero, so shear wave can only be propagated in solid.But it is worth noting: Lamb wave only is created in thickness and equals in the wavelength thin plate, and sound field spreads all over the thickness (comprising the inner and surface of thin plate) of whole plate.Resonance frequency (the F of ultrasonic transducer commonly used S) at 2MHz ± 8%, press 2MHz and calculate, its wavelength is: 1.5mm; When the last incrustation scale thickness of reflecting antenna (reflecting plate) reached 1.5mm, measurement immediately being attached to scale crust generation Lamb wave on the antenna, badly influenced the accuracy of flow metering numerical value with ultrasonic beam, and other factors cause ultrasonic calorimeter to lose efficacy in addition.
Outside common ultrasonic calorimeter upstream ultrasonic transducer and downstream ultrasonic transducer cable tail are exposed to, suffer malicious attack (as the people for cutting off) in the use easily and damage, cause ultrasonic calorimeter to lose efficacy.And, common ultrasonic calorimeter counter (integrator) deck structure, reading, check meter, inconvenient operation.
(3) utility model content:
The purpose of this utility model is to provide a kind of novel anti fouling ultrasonic flowmeter, it can solve the step of prior art, having used can on-line maintenance and the reflecting antenna (also claiming reflecting plate) of replacing, solved since the reflecting antenna scaling to the influence of the ultrasonic flowmeter accuracy of measuring; And upstream ultrasonic transducer and downstream ultrasonic transducer cable tail is built-in, prevented artificial malicious attack and destruction, make outward appearance succinctly attractive in appearance; And the utility model counter (integrator) can rotate along vertical axes ± 135 °, can rotate-10 °~+ 90 ° along horizontal axis, the user can finish operations such as data read, parameter setting, status poll easily.Man-machine interface is more affine, uses more convenient.
The technical solution of the utility model: a kind of novel anti fouling ultrasonic flowmeter, it is characterized in that there is the vertical cylinder hole lower end, middle part of meter spool piece, discoid reflecting antenna is installed in the vertical cylinder hole.
The cylindrical hole geometric configuration of described meter spool piece is the $ shape, comprises the horizontal cylinder hole, oblique circular cylinder hole and the vertical cylinder hole that are interconnected; Described horizontal cylinder hole is the cylindrical hole of three sections concentrics, and axis is horizontal axis, and cylindrical hole aperture, stage casing is less than inlet end cylindrical hole aperture and water outlet end cylindrical hole aperture, and described inlet end cylindrical hole aperture is identical with water outlet end cylindrical hole aperture; Described oblique circular cylinder hole is for being symmetrical in two of vertical axis, and namely the upstream ultrasonic transducer is installed in upstream oblique circular cylinder hole and oblique circular cylinder hole, downstream in the oblique circular cylinder hole, upstream, and the downstream ultrasonic transducer is installed in the oblique circular cylinder hole, downstream.
Connector is installed in the top of described meter spool piece, and the oblique circular cylinder port lid of meter spool piece is lived; The upstream ultrasonic transducer of installing in the described oblique circular cylinder hole and the cable tail of downstream ultrasonic transducer built-in with connector in.
Described connector top connects retainer; The retainer top connects head assembly and counter; Described head assembly and counter can rotate along vertical axes ± 135 °, along-10 °~+ 90 ° of horizontal axis rotations; The cable tail of described upstream ultrasonic transducer and downstream ultrasonic transducer is introduced head assembly and counter through connector and retainer.
Described discoid reflecting antenna is installed in the vertical cylinder hole by the locknut I, and by the sealing of O-ring seals I; Between described discoid reflecting antenna and the locknut I liner is arranged, and by the sealing of O-ring seals II.
Described discoid reflecting antenna is that reflecting surface is the stainless steel disk that mirror finish is done on the plane on the antenna.
The reflecting surface of described discoid reflecting antenna is the Down Highway that the plane is lower than stage casing cylindrical hole in the horizontal cylinder hole on the antenna.
Described upstream ultrasonic transducer is installed in the oblique circular cylinder hole, upstream by the locknut II, and by the sealing of O-ring seals III; Described downstream ultrasonic transducer is installed in the oblique circular cylinder hole, downstream by the locknut III, and by the sealing of O-ring seals IV.
The inclined hole axis in described oblique circular cylinder hole intersects with the horizontal axis in horizontal cylinder hole and the vertical axis in vertical cylinder hole respectively; Described horizontal axis, vertical axis and inclined hole axis all are on the same section plane, also are on the vertical guide of horizontal axis simultaneously.
Described oblique circular cylinder hole and vertical cylinder hole are many steps cylindrical hole.
The end face of two sections cylindrical holes at described meter spool piece two ends has the external thread that pipeline section is installed; There is lead seal hole the angle of described meter spool piece oblique circular cylinder hole and horizontal cylinder hole outer wall; The upper end, middle part of described meter spool piece has the connector installation to use the auxiliary positioning hole with threaded hole and assembling.
The bottom of described connector has with the connector of meter spool piece top installs with the corresponding circular hole of threaded hole, connector top sidewall has the retainer of connection oblong aperture, the connector both sides have upstream ultrasonic transducer cable tail to pass through the chamber by chamber and downstream ultrasonic transducer cable tail, and there is the connector epicoele at the connector middle part.
Described retainer below have and the connection retainer of connector with the corresponding claw of oblong aperture, middlely be the oblong aperture that fillet is arranged by cable tail, upper inner wall has constraint head assembly and counter along the convex tendon of the vertical axis anglec of rotation.
Described locknut I, locknut II and locknut III all are that the locknut of all pressing the off-load packing ring is arranged, and the stressed end face that compresses of locknut has annular groove, coating high polymer layer in groove, and this layer outer face is higher than the stressed end face of compressing of locknut.
Technique effect of the present utility model and superiority: 1, discoid reflecting antenna, adopt the corrosion resistant plate Precision Machining, the reflecting surface of its discoid reflecting antenna (plane on the antenna) is done mirror finish, makes it stronger to the ultrasonic beam reflection, and refraction weakens; Because the reflecting surface (plane on the antenna) of discoid reflecting antenna is lower than the Down Highway of stage casing cylindrical hole, increased the sound path (path of downstream transducer that wave beam is from upstream transducer---reflecting surface of discoid reflecting antenna---of upstream and downstream ultrasonic transducer, vice versa), improved the measuring accuracy of flow, especially to time difference method; The reflecting surface of discoid reflecting antenna (plane on the antenna) is lower than the Down Highway of stage casing cylindrical hole, the plane is in the depression of stage casing cylindrical hole to the minimum (checking of process fluent software of the influence of medium (heat supply water) velocity field and pressure field on the antenna, fluid properties has minimum disturbance near discoid reflecting antenna), and antenna do not enter the xsect of stage casing cylindrical hole, do not produce the pressure loss; During because of the quality problem scaling, the locknut I of outwarding winding is taken out discoid reflecting antenna, removes the incrustation scale on discoid reflecting antenna reflecting surface (plane on the antenna), or the discoid reflecting antenna that more renews, and reloads again in the use, makes it to recover normal, continues to use; 2, external except temperature sensor, outside nothing lead-in wire and cable have improved security and reliability; The multifunctional calculator housing has satisfied the multiple demand in radio-frequency card, infrared, multiple I/O interfaces such as 232,485 and double cell storehouse; Cable tail is built-in, has prevented artificial malicious attack and destruction, makes outward appearance succinctly attractive in appearance; 3, the cylindrical hole of pipeline section has been guaranteed water stream channel through Precision Machining; Oblique circular cylinder hole and vertical cylinder hole also are Precision Machining, guarantee that dimensional discrepancy and shaped position deviation between the three adhere to specification, make it accurate positioning, it is convenient to change, guarantee to change the Repeatability and Reproducibility of ultrasonic flowmeter behind the parts simultaneously, guaranteed the accuracy of the flow signal that pipeline section provides for counter; 4, having installed and used of discoid reflecting antenna, upstream ultrasonic transducer and downstream ultrasonic transducer has the locknut of all pressing the off-load packing ring, at the stressed end face of compressing of locknut annular groove is arranged, coating is based on the high polymer layer of polytetrafluoroethylene (PTFE) in groove, this layer outer face is higher than the stressed end face of compressing of locknut (processing behind the coating), the annular groove of locknut is used for fixedly high polymer layer, and the creep of constraint polytetrafluoroethylene (PTFE) under stress; Utilize elasticity and the appropriateness distortion of high polymer layer; High polymer layer can play and all press the off-load effect, can either guarantee discoid reflecting antenna, upstream ultrasonic transducer and downstream ultrasonic transducer installation location, be unlikely to again because manufacturing, assembling and human factor cause parts to lose efficacy, especially for the core parts piezoelectric ceramic plate of protection ultrasonic transducer; 5, head assembly and counter utilize the technology among the granted patent ZL200920252213.8 " a kind of novel all-in-one upper-mounting type ball valve Prepayment Heat Meter ", can rotate along vertical axes ± 135 °, can rotate-10 °~+ 90 ° along horizontal axis, the user can finish operations such as data read, parameter setting, status poll easily; 6, promotion and application of the present utility model, to improve the discharge characteristic of ultrasonic flow sensor (pipeline section) effectively, measuring accuracy, the maintainability of ultrasonic calorimeter have been improved, to safeguard and to change reflecting antenna at the scene, improved reliability, prolonged serviceable life, be more suitable in the present situation of China's central heating, solved because the heat supply quality problem causes scaling and caused ultrasonic calorimeter to lose efficacy; Especially with the implementation of national building energy conservation meterage policy, improving the legal metering instrument precision of central water supply and heat metering and improving discharge characteristic has important role, and broad prospect for its application is also arranged.
(4) description of drawings:
Fig. 1 is the ultrasonic calorimeter outside drawing of new construction that the related a kind of novel anti fouling ultrasonic flowmeter of the utility model is suitable for.
Fig. 2 looks cut-open view for the ultrasonic calorimeter projection of new construction that the related a kind of novel anti fouling ultrasonic flowmeter of the utility model is suitable for.
Fig. 3 is the related a kind of novel anti fouling ultrasonic flowmeter pipeline section outside drawing of the utility model.
Fig. 4 is the related a kind of novel anti fouling ultrasonic flowmeter pipeline section subssembly drawing of the utility model.
Fig. 5 is the related a kind of novel anti fouling ultrasonic flowmeter connector outside drawing of the utility model.
Fig. 6-1, Fig. 6-2 is the related a kind of novel anti fouling ultrasonic flowmeter connector perspective view of the utility model (wherein Fig. 6-1 is that main cut-open view, Fig. 6-2 are left cut-open view).
Fig. 7 is the related a kind of novel anti fouling ultrasonic flowmeter retainer outside drawing of the utility model.
Fig. 8-1, Fig. 8-2, Fig. 8-3 are the related a kind of novel anti fouling ultrasonic flowmeter retainer perspective view of the utility model (wherein, Fig. 8-1 is that main cut-open view, Fig. 8-2 are vertical view for left cut-open view, Fig. 8-3).
Wherein, 1 is meter spool piece, and 1a is water inlet, 1b is water delivering orifice, and 1c is lead seal hole, and 1d is connector installation threaded hole, 1e uses the auxiliary positioning hole for assembling, and 2 is the O-ring seals I, and 3 is discoid reflecting antenna, 4-1 is the locknut I, and 4-2 is the locknut II, and 4-3 is the locknut III, 5 is connector, and 5a is for connecting the retainer oblong aperture, and 5b is that upstream ultrasonic transducer cable tail passes through the chamber, 5c is the connector epicoele, 5d is circular hole, and 5e is that downstream ultrasonic transducer cable tail passes through the chamber, and 6 is retainer, 6a is convex tendon, 6b is claw, and 6c is the oblong aperture that fillet is arranged, and 7 is head assembly and counter, 8 is liner, 9 is the O-ring seals II, and 10 is the upstream ultrasonic transducer, and 11 is the downstream ultrasonic transducer, 12-1 is the O-ring seals III, and 12-2 is the O-ring seals IV.
(5) embodiment:
Embodiment: a kind of novel anti fouling ultrasonic flowmeter (is seen Fig. 1-Fig. 4), it is characterized in that there is the vertical cylinder hole lower end, middle part of meter spool piece 1, discoid reflecting antenna 3 is installed in the vertical cylinder hole.
The cylindrical hole geometric configuration of described meter spool piece 1 is the $ shape, comprises the horizontal cylinder hole, oblique circular cylinder hole and the vertical cylinder hole that are interconnected; Described horizontal cylinder hole is the cylindrical hole of three sections concentrics, axis is horizontal axis, cylindrical hole aperture, stage casing is less than water inlet 1a end cylindrical hole aperture and water delivering orifice 1b end cylindrical hole aperture, and described water inlet 1a end cylindrical hole aperture is identical with water delivering orifice 1b end cylindrical hole aperture; Described oblique circular cylinder hole is for being symmetrical in two of vertical axis, and namely upstream ultrasonic transducer 10 is installed in upstream oblique circular cylinder hole and oblique circular cylinder hole, downstream in the oblique circular cylinder hole, upstream, and downstream ultrasonic transducer 11 is installed in the oblique circular cylinder hole, downstream.(see Fig. 1-Fig. 4)
Connector 5 is installed in the top of described meter spool piece 1, and the oblique circular cylinder port lid of meter spool piece 1 is lived; The upstream ultrasonic transducer of installing in the described oblique circular cylinder hole 10 and the cable tail of downstream ultrasonic transducer 11 built-in with connector 5 in.(seeing Fig. 1-Fig. 3, Fig. 5, Fig. 6-1, Fig. 6-2)
Described connector 5 tops connect retainer 6; Retainer 6 tops connect head assembly and counter 7; Described head assembly and counter 7 can rotate along vertical axes ± 135 °, along-10 °~+ 90 ° of horizontal axis rotations; The cable tail of described upstream ultrasonic transducer 10 and downstream ultrasonic transducer 11 is introduced head assembly and counter 7 through connector 5 and retainer 6.(see Fig. 1-Fig. 3, Fig. 7-Fig. 8)
Described discoid reflecting antenna 3 is installed in the vertical cylinder hole by locknut I 4-1, and by 2 sealings of O-ring seals I; Between described discoid reflecting antenna 3 and the locknut I 4-1 liner 8 is arranged, and by 9 sealings of O-ring seals II.(seeing Fig. 2, Fig. 4)
Described discoid reflecting antenna 3 is the stainless steel disk of 20mm * 1.5mm that mirror finish is done on the plane on the antenna for reflecting surface.
The reflecting surface of described discoid reflecting antenna 3 is the Down Highway that the plane is lower than stage casing cylindrical hole in the horizontal cylinder hole on the antenna.(seeing Fig. 2, Fig. 4)
Described upstream ultrasonic transducer 10 is installed in the oblique circular cylinder hole, upstream by locknut II 4-2, and by O-ring seals III 12-1 sealing; Described downstream ultrasonic transducer 11 is installed in the oblique circular cylinder hole, downstream by locknut III 4-3, and by O-ring seals IV 12-2 sealing.(see figure 4)
The inclined hole axis in described oblique circular cylinder hole intersects with the horizontal axis in horizontal cylinder hole and the vertical axis in vertical cylinder hole respectively; Described horizontal axis, vertical axis and inclined hole axis all are on the same section plane, also are on the vertical guide of horizontal axis simultaneously.(seeing Fig. 2, Fig. 4)
Described oblique circular cylinder hole and vertical cylinder hole are many steps cylindrical hole.(seeing Fig. 2, Fig. 4)
The end face of two sections cylindrical holes at described meter spool piece 1 two ends has the external thread that pipeline section is installed; There is lead seal hole 1c the angle of described meter spool piece 1 oblique circular cylinder hole and horizontal cylinder hole outer wall; The upper end, middle part of described meter spool piece 1 has connector to install with threaded hole 1d and assembling auxiliary positioning hole 1e.(see figure 4)
The bottom of described connector 5 has with the connector of meter spool piece 1 top installs the corresponding circular hole 5d with threaded hole 1d, connector 5 top sidewalls have the retainer of connection oblong aperture 5a, connector 5 both sides have upstream ultrasonic transducer cable tail to pass through chamber 5e by chamber 5b and downstream ultrasonic transducer cable tail, and there is connector epicoele 5c at connector 5 middle parts.(seeing Fig. 6-1, Fig. 6-2)
Described retainer 6 belows have and the connection retainer of connector 5 with the corresponding claw 6b of oblong aperture 5a, middlely be the oblong aperture 6c that fillet is arranged by cable tail, upper inner wall has constraint head assembly and counter 7 along the convex tendon 6a of the vertical axis anglec of rotation.(seeing Fig. 8-1, Fig. 8-2, Fig. 8-3)
Described locknut I 4-1, locknut II 4-2 and locknut III 4-3 have the locknut of all pressing the off-load packing ring, and the stressed end face that compresses of locknut has annular groove, coating high polymer layer in groove, and this layer outer face is higher than the stressed end face of compressing of locknut.
Described high polymer layer is that polytetrafluoroethylene PTFE accounts for 30% high polymer layer.

Claims (10)

1. a novel anti fouling ultrasonic flowmeter is characterized in that there is the vertical cylinder hole lower end, middle part of meter spool piece, and discoid reflecting antenna is installed in the vertical cylinder hole.
2. according to the described a kind of novel anti fouling ultrasonic flowmeter of claim 1, it is characterized in that the cylindrical hole geometric configuration of described meter spool piece is the $ shape, comprise the horizontal cylinder hole, oblique circular cylinder hole and the vertical cylinder hole that are interconnected; Described horizontal cylinder hole is the cylindrical hole of three sections concentrics, and axis is horizontal axis, and cylindrical hole aperture, stage casing is less than inlet end cylindrical hole aperture and water outlet end cylindrical hole aperture, and described inlet end cylindrical hole aperture is identical with water outlet end cylindrical hole aperture; Described oblique circular cylinder hole is for being symmetrical in two of vertical axis, and namely the upstream ultrasonic transducer is installed in upstream oblique circular cylinder hole and oblique circular cylinder hole, downstream in the oblique circular cylinder hole, upstream, and the downstream ultrasonic transducer is installed in the oblique circular cylinder hole, downstream.
3. according to the described a kind of novel anti fouling ultrasonic flowmeter of claim 2, it is characterized in that connector is installed in the top of described meter spool piece, and the oblique circular cylinder port lid of meter spool piece is lived; The upstream ultrasonic transducer of installing in the described oblique circular cylinder hole and the cable tail of downstream ultrasonic transducer built-in with connector in.
4. according to the described a kind of novel anti fouling ultrasonic flowmeter of claim 3, it is characterized in that described connector top connects retainer; The retainer top connects head assembly and counter; Described head assembly and counter can rotate along vertical axes ± 135 °, along-10 °~+ 90 ° of horizontal axis rotations; The cable tail of described upstream ultrasonic transducer and downstream ultrasonic transducer is introduced head assembly and counter through connector and retainer.
5. according to the described a kind of novel anti fouling ultrasonic flowmeter of claim 1, it is characterized in that described discoid reflecting antenna is installed in the vertical cylinder hole by the locknut I, and by the sealing of O-ring seals I; Between described discoid reflecting antenna and the locknut I liner is arranged, and by the sealing of O-ring seals II; Described discoid reflecting antenna is that reflecting surface is the stainless steel disk that mirror finish is done on the plane on the antenna; The reflecting surface of described discoid reflecting antenna is the Down Highway that the plane is lower than stage casing cylindrical hole in the horizontal cylinder hole on the antenna.
6. according to the described a kind of novel anti fouling ultrasonic flowmeter of claim 2, it is characterized in that described upstream ultrasonic transducer is installed in the oblique circular cylinder hole, upstream by the locknut II, and by the sealing of O-ring seals III; Described downstream ultrasonic transducer is installed in the oblique circular cylinder hole, downstream by the locknut III, and by the sealing of O-ring seals IV.
7. according to the described a kind of novel anti fouling ultrasonic flowmeter of claim 2, it is characterized in that the inclined hole axis in described oblique circular cylinder hole intersects with the horizontal axis in horizontal cylinder hole and the vertical axis in vertical cylinder hole respectively; Described horizontal axis, vertical axis and inclined hole axis all are on the same section plane, also are on the vertical guide of horizontal axis simultaneously; Described oblique circular cylinder hole and vertical cylinder hole are many steps cylindrical hole; The end face of two sections cylindrical holes at described meter spool piece two ends has the external thread that pipeline section is installed; There is lead seal hole the angle of described meter spool piece oblique circular cylinder hole and horizontal cylinder hole outer wall; The upper end, middle part of described meter spool piece has the connector installation to use the auxiliary positioning hole with threaded hole and assembling.
8. according to the described a kind of novel anti fouling ultrasonic flowmeter of claim 3, the circular hole corresponding with the connector installation usefulness threaded hole of meter spool piece top arranged at the bottom that it is characterized in that described connector, connector top sidewall has the retainer of connection oblong aperture, the connector both sides have upstream ultrasonic transducer cable tail to pass through the chamber by chamber and downstream ultrasonic transducer cable tail, and there is the connector epicoele at the connector middle part.
9. according to the described a kind of novel anti fouling ultrasonic flowmeter of claim 4, it is characterized in that described retainer below has and the connection retainer of the connector corresponding claw of oblong aperture, middle be the oblong aperture that fillet is arranged by cable tail, upper inner wall has constraint head assembly and counter along the convex tendon of the vertical axis anglec of rotation.
10. according to the described a kind of novel anti fouling ultrasonic flowmeter of claim 2, it is characterized in that described discoid reflecting antenna is installed in the vertical cylinder hole by the locknut I, described upstream ultrasonic transducer is installed in the oblique circular cylinder hole, upstream by the locknut II, and described downstream ultrasonic transducer is installed in the oblique circular cylinder hole, downstream by the locknut III; Described locknut I, locknut II and locknut III all are that the locknut of all pressing the off-load packing ring is arranged, and the stressed end face that compresses of locknut has annular groove, coating high polymer layer in groove, and this layer outer face is higher than the stressed end face of compressing of locknut.
CN 201220747045 2012-12-29 2012-12-29 Novel anti-scaling ultrasonic flow meter Expired - Fee Related CN203037302U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220747045 CN203037302U (en) 2012-12-29 2012-12-29 Novel anti-scaling ultrasonic flow meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220747045 CN203037302U (en) 2012-12-29 2012-12-29 Novel anti-scaling ultrasonic flow meter

Publications (1)

Publication Number Publication Date
CN203037302U true CN203037302U (en) 2013-07-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103033224A (en) * 2012-12-29 2013-04-10 陈宇 Novel anti-scaling ultrasonic flow meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103033224A (en) * 2012-12-29 2013-04-10 陈宇 Novel anti-scaling ultrasonic flow meter

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130703

Termination date: 20131229