CN108534854B

CN108534854B - ultrasonic water meter

Info

Publication number: CN108534854B
Application number: CN201810295833.3A
Authority: CN
Inventors: 罗贝贝; 陈浩嘉
Original assignee: Wenling Sen Quantity Water Meter Co Ltd
Current assignee: Wenling Sen Quantity Water Meter Co Ltd
Priority date: 2018-04-03
Filing date: 2018-04-03
Publication date: 2020-01-31
Anticipated expiration: 2038-04-03
Also published as: CN108534854A

Abstract

The invention discloses an ultrasonic water meter, which comprises an upper block, a side block and a flow tube penetrating through the side block from the middle part, wherein a top cavity for mounting a display screen and a circuit control module is arranged in the upper block, and flange plates are arranged at the inlet end and the outlet end of the flow tube.

Description

ultrasonic water meter

Technical Field

The invention relates to water meters, in particular to a ultrasonic water meter.

Background

The ultrasonic water meter is a novel water meter which obtains the flow rate of the water by detecting the time difference generated by the change of the speed when the ultrasonic sound beam propagates in the downstream and the upstream in the water and analyzing and processing the flow rate so as to calculate the flow of the water in steps.

Chinese patent No. CN204421984U discloses kinds of multifunctional water meters, which includes a flow tube, wherein flanges are respectively disposed at the inlet end and the outlet end of the flow tube, a square circuit installation cavity is disposed on the flow tube, the upper end surface of the circuit installation cavity is connected to a display module, a communication module and a pressure module are respectively fixed on the left side surface and the right side surface of the circuit installation cavity, ultrasonic modules are respectively disposed on four opposite corners of the circuit installation cavity, and the ultrasonic modules on the four opposite corners of the circuit installation cavity are opposite to each other in an X-shape to form a flow detection circuit.

The ultrasonic detection device has the defects that the ultrasonic detection is realized by arranging the X-shaped correlation module at the opposite angle of the square mounting cavity, the mounting cavity is arranged on the flow tube, and flanges are arranged at the two ends of the flow tube according to the mounting requirement, so that the processing of the mounting cavity and the mounting of the correlation detection module are greatly interfered, the structure determines that the correlation detection module needs to be sealed at multiple points, the mounting is blocked by mounting, and the sealing performance is difficult to effectively improve.

Disclosure of Invention

The invention aims to provide ultrasonic water meters, which have the advantages of convenient installation of a correlation detection module and good sealing effect.

The technical purpose of the invention is realized by the following technical scheme:

ultrasonic water meter, including last block, side block and from the flow tube of middle part run through side block, be provided with the top chamber that is used for installing display screen and line control module in the last block, the entrance point and the exit end of flow tube all are provided with the ring flange, the side block is provided with at least opening installation cavity down respectively by two parts that flow tube separates, installation cavity and flow tube intercommunication, two are relative inlay the corresponding ultrasonic wave module of inner chamber that crosses flow tube in the installation cavity respectively, the ultrasonic wave module includes carrier and the lateral be fixed in carrier ultrasonic transducer, the bottom surface of side block is provided with the open-ended bottom plate that covers two at least installation cavities simultaneously.

By adopting the scheme, the traditional ultrasonic module is replaced by the mode of adding the carrier to the ultrasonic transducer, so that the installation direction of the ultrasonic module can be inclined or vertical to the detection and receiving direction of the ultrasonic module, the opposite ultrasonic modules can be installed in the installation cavity along the same direction by the opening of the installation cavity, the interference can be avoided and the installation is more convenient because the direction is parallel to the surface of the flange plate, and after the ultrasonic module is installed, the openings of the installation cavities can be simultaneously sealed through the bottom plate, so that the sealing difficulty of the installation cavity is greatly reduced, and a better sealing effect is obtained.

Preferably, , the side blocks are rectangular and have a longitudinal centerline that is oblique to the centerline of the flow tube.

By adopting the scheme, the distance between the two ultrasonic modules arranged on the side block is effectively increased, so that the detection accuracy is increased.

, preferably, the lower surface of the side block is concavely provided with a rubber cavity, the rubber cavity is communicated with the installation space to be provided with a wire passing groove, and the side block is provided with a wire passing hole communicated with the rubber cavity and the top cavity.

By adopting the scheme, after the line of the ultrasonic module is led out from the mounting cavity, the line is led into the glue cavity through the line passing groove on the side wall of the mounting cavity and then led into the top cavity through the line passing hole, the glue cavity can increase the sealing effect in a glue filling mode, the range of the sealing glue can be expanded to the line passing hole and the line passing groove, and because the opening directions of the glue cavity and the mounting cavity are downward in the actual mounting, even if the waterproof glue in the glue cavity is damaged by , the water or moisture still can be in a sinking state and is not easy to enter the top cavity, thereby protecting the line control module in the top cavity.

the preferable step is that two side faces of the side block are respectively provided with a protruding rib with two ends respectively extending to the bottom of the upper block and the bottom of the side block, the thread passing hole is partially positioned in the protruding rib, and the side wall of the rubber cavity is provided with a U-shaped groove communicated with the thread passing hole.

By adopting the scheme, the rib can effectively improve the wall thickness of the line passing hole under the condition of not greatly increasing the overall volume of the water meter, the service life is prolonged, and meanwhile, the formed U-shaped groove can guide the sealant to enter the line passing hole in the sealant pressing process, so that excessive sealant can not enter the line passing hole and then flow into the top cavity.

, preferably, a sealing groove is formed in the surface of the bottom plate facing the side block, a sealing gasket is arranged in the sealing groove, and a plurality of through holes are formed in the bottom plate and the sealing gasket and are distributed along the circumferential direction of the sealing gasket.

Adopt above-mentioned scheme, wear the mode restriction sealed position of establishing the screw through seal groove and perforation, avoid leading to the sealing effect of certain part to reduce because of the skew of sealed pad in the installation.

, preferably, an inner frame is convexly arranged in the sealing groove, the inner frame comprises a curved part surrounding the lower opening of the mounting cavity, a straight part surrounding the glue cavity and a convex part covering the U-shaped groove, and the sealing gasket is sleeved on the outer wall of the inner frame.

By adopting the scheme, surrounding rings are formed by matching with the inner wall of the sealing groove, so that the sealing is limited to extend and diffuse outwards towards the hole groove part of the side block in the extrusion process, the abutting prepressing force is kept, the abutting surface of the sealing gasket and the bottom cover is positioned at the lower position relative to the abutting position of the side block, the sealing groove and the framework form a curved path, the sealing effect is increased, and the integral sealing effect is enhanced.

the preferable step is that the ultrasonic module further comprises an inner wall compression ring which is used for compressing the carrier and is in threaded connection with the installation cavity, the inner wall of the installation cavity is provided with a step, the carrier is provided with a baffle ring which is in butt joint with the step along the axial direction, the step is concavely provided with a positioning groove, and the baffle ring is provided with a positioning protrusion which is matched with the positioning groove.

By adopting the scheme, after installation, the baffle ring is abutted with the step, the pressing ring is abutted to the other end of the carrier so as to keep axial spacing, and the positioning groove and the spacing protrusion are matched to provide circumferential positioning, so that the ultrasonic transducer can be quickly, accurately and stably installed to a working position.

is preferable that the side of the carrier is provided with a tangent plane, the tangent plane is provided with an installation groove vertical to the tangent plane, a lead channel is arranged between the lower end surface of the carrier and the bottom of the installation groove in a communicating manner, the ultrasonic transducer is embedded in the installation groove, a sealing ring is embedded between the ultrasonic transducer and the bottom of the installation groove, the end part of the ultrasonic transducer is provided with an annular groove, and a pressing plate connected with a tangent plane screw is abutted to the annular groove along the axial direction.

By adopting the scheme, the space occupied by the cut surface cut part is provided, and an enough mounting position is provided for the ultrasonic transducer; after the installation, the pressing plate presses the annular groove, the sealing ring is kept to have enough sealing pre-pressure all the time, and water is prevented from entering the lead channel from the installation groove.

the preferable step is that an inner box is embedded in the top cavity, two top plates are convexly arranged on the bottom surface of the inner box, a top cover is fixed at the top of the upper block, the top cover comprises a cover plate and a nesting sleeve convexly arranged on the vertical cover plate, the cover plate is uniformly provided with a plurality of screw holes along the circumferential direction, the cover plate is provided with a transition groove between the nesting sleeve and the screw holes around the nesting sleeve, a sealing convex ring is convexly arranged in the transition groove, a -th sealing strip with the outer wall abutted to the inner wall of the top cavity is embedded on the axial surface of the sealing convex ring, upper sealing grooves are embedded at the end part of the nesting sleeve and the end part of the inner box, and an annular second sealing strip is embedded together when the two upper sealing grooves are.

Adopt above-mentioned scheme, the apron is fixed with the top butt of last block, and the strip of paper used for sealing forms with the opening in top chamber and says sealed line of defence, and nested and the butt of interior box form the second and say the line of defence, assist and lift on the components such as line board with the roof to leave enough space in the below, make in water is difficult for getting into the water gauge from the top, and make even if there is water or aqueous vapor to get into because of the accident, also be difficult for influencing the normal function of line control module etc..

the preferable step is that a rectifier is embedded on the inner wall of the flange plate at the inlet of the ultrasonic water meter, the rectifier comprises a base sleeve with a round inlet and a round outlet, the inlet caliber of the base sleeve is larger than the outlet caliber, a plurality of rectifying rib plates are uniformly arranged on the inner side wall of the base sleeve along the circumferential direction, and a circumferential blocking part is arranged on the base sleeve along the radial protrusion, an embedding groove for the circumferential blocking part to be embedded is arranged on the inner wall of the flange plate, and tight-fitting edges abutted against the inner wall of the flange plate are uniformly arranged on the circumferential outer wall of the base sleeve and the outer wall of the circumferential blocking part along.

By adopting the scheme, strands of water are divided into multiple strands of flow distribution and are regulated when passing through the rectifying rib plates, and then the multiple strands of flow distribution are combined into strands, in the process, the unstable state of the fluid is well eliminated, the position of the rectifier is positioned by the matching of the caulking groove and the peripheral baffle part, and the tensioning of the rectifier is kept by the matching of the tight-fitting edge and the inner wall of the flange.

In conclusion, the invention has the following beneficial effects:

1. the carrier with the positioning structure and the ultrasonic transducer laterally mounted on the carrier are matched in a manner of mounting the cavity opening in a lower mode, so that the ultrasonic module can be mounted from bottom to top to avoid the interference of a flange, and the mounting convenience of the ultrasonic module is greatly improved;

2. through sealing a plurality of lower trench simultaneously to assist multiple sealing, strengthened sealed effect, strengthened the waterproof performance of water gauge.

Drawings

Fig. 1 is an exploded view of an ultrasonic water meter of embodiment 1;

FIG. 2 is a structural view of a case part of an ultrasonic water meter according to embodiment 1;

FIG. 3 is a structural view of an ultrasonic module of embodiment 1;

FIG. 4 is a structural view of the ceiling cavity of embodiment 1;

FIG. 5 is a structural view of a top cover of embodiment 1;

FIG. 6 is a structural view of a base plate of embodiment 1;

fig. 7 is a structural diagram of a rectifier of embodiment 1.

In the figure, 1, a flow tube; 2. a side block; 3. an upper block; 4. a flange plate; 5. a rectifier; 6. a top cover; 7. an ultrasonic module; 8. a base plate; 9. an inner case; 21. a mounting cavity; 211. a step; 212. positioning a groove; 22. a glue cavity; 23. a wire passing groove; 24. a U-shaped groove; 25. a wire passing hole; 26. a rib; 31. a top chamber; 41. caulking grooves; 51. a base sleeve; 52. tightly fitting edges; 53. a peripheral baffle part; 54. a rectifying rib plate; 61. a cover plate; 62. nesting; 63. a sealing convex ring; 64. a transition groove; 71. a carrier; 711. cutting into noodles; 712. mounting grooves; 72. a baffle ring; 721. positioning protrusions; 73. pressing a ring; 74. a seal ring; 75. an ultrasonic transducer; 751. a ring groove; 76. pressing a plate; 77. a wire passage; 79. an O-shaped ring; 81. a gasket; 82. perforating; 83. an inner skeleton; 831. a curved portion; 832. a straight portion; 833. a convex portion; 84. a sealing groove; 91. a top plate; 92. and (6) sealing the groove.

Detailed Description

The present invention is further described in detail below with reference to the attached figures.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the present invention.

ultrasonic water meter, as shown in fig. 1 and fig. 2, comprises an upper block 3, a side block 2 and a flow tube 1 penetrating the side block 2 from the middle part, wherein a top cavity 31 for mounting a display screen and a circuit control module is arranged in the upper block 3, a top cover 6 for sealing the top cavity 31 is arranged on the top of the upper block 3, flanges 4 are arranged at the inlet end and the outlet end of the flow tube 1 and are used for communicating with a water pipe, a rectifier 5 is also arranged in the flange cavity at the inlet end side, the side block 2 is a cuboid, the center line of the side block 2 along the long side direction is inclined to the center line of the flow tube 1, two parts of the side block 2 separated by the flow tube 1 are respectively provided with installation cavities 21 with downward openings, the installation cavities 21 are communicated with the flow tube 1, and two opposite installation cavities 21 are respectively embedded with ultrasonic modules 7 corresponding to the cavities crossing the flow.

Referring to fig. 2 and 3, the ultrasonic module 7 includes a carrier 71, an ultrasonic transducer 75 laterally fixed to the carrier 71, and an inner wall pressing ring 73 screwed to the mounting cavity 21 and pressing the carrier 71, a blocking ring 72 is radially and convexly disposed at a lower end of the carrier 71, a positioning protrusion 721 matched with the positioning groove 212 is disposed on the blocking ring 72, when the ultrasonic module is mounted, an O-ring is sleeved on the carrier, the O-ring abuts against an axial end face of the blocking ring, an axial end face of the O-ring abuts against a step 211 disposed on an inner wall of the mounting cavity 21, the axial positioning of the carrier 71 is realized by pressing the pressing ring 73, the positioning protrusion 721 cooperates with the positioning groove 212 disposed on the step 211 to realize circumferential positioning of the carrier 71, a cutting face 711 is disposed at a side of the carrier 71, a mounting groove 712 perpendicular to the cutting face 711 is disposed on the cutting face, a lead passage 77 is disposed between a lower end face of the carrier 71 and a groove bottom of the mounting groove 712, a lead passage 77 is disposed between the ultrasonic transducer 75 and the pressing ring 751 penetrates through a central hole of the pressing ring 73, and a lead screw 751 connected with the ultrasonic transducer 75 and the pressing ring 73.

Referring to fig. 2, the lower surface of the side block 2 is concavely provided with a rubber cavity 22, a line passing groove 23 is communicated between the rubber cavity 22 and the mounting cavity 21, and a line passing hole 25 communicated with the rubber cavity 22 and the top cavity 31 is arranged on the side block 2. Protruding ribs 26 with two ends respectively extending to the bottom of the upper block 3 and the bottom of the side block 2 are convexly arranged on two side surfaces of the side block 2, the thread passing hole 25 is partially positioned in the protruding ribs 26, and a U-shaped groove 24 communicated to the thread passing hole 25 is arranged on the side wall of the rubber cavity 22. The line of the ultrasonic transducer 75 passes through the hexagonal center hole, then passes through the line passing groove 23 and the glue cavity 22, then passes through the line passing hole 25, enters the top cavity 31 and is connected with the line control module.

Referring to fig. 4 and 5, an inner box 9 is embedded in the top cavity 31, two top plates 91 for lifting the line control module are arranged on the bottom surface of the inner box 9 in a protruding mode, the top cover 6 comprises a cover plate 61 and a nesting 62 which is arranged in a protruding mode through the vertical cover plate 61, the cover plate 61 is evenly provided with a plurality of screw holes along the circumferential direction, the cover plate 61 is provided with a transition groove 64 which is located between the nesting 62 and the screw holes and surrounds the nesting 62, a sealing convex ring 63 is arranged in the transition groove 64 in a protruding mode, an annular -th sealing strip with the outer wall abutted to the inner wall of the top cavity 31 is embedded in the axial surface of the sealing convex ring 63, an upper sealing groove 92 is embedded in the end portion of the nesting 62 and the end portion of the inner box 9, and.

Referring to fig. 1, the bottom surface of the side block 2 is provided with a bottom plate 8 that covers the openings of the two mounting cavities 21 simultaneously. Referring to fig. 6, the surface of the base plate 8 facing the side block 2 is provided with a sealing groove 84, an inner frame 83 is provided projecting into the sealing groove 84, and the inner frame 83 includes a curved portion 831 surrounding a lower opening of the mounting cavity 21, a straight portion 832 surrounding the glue cavity 22, and a convex portion 833 covering the U-shaped groove 24. Be provided with in the seal groove 84 and set up sealed 81, sealed 81 cup joints in the outer wall of inner frame 83, all is provided with a plurality of perforation 82 of arranging along sealed circumference of 81 on bottom plate 8 and sealed 81.

Referring to fig. 7, the rectifier 5 includes a base sleeve 51 having a circular inlet and a circular outlet and having an inlet aperture larger than an outlet aperture, a plurality of rectifying rib plates 54 uniformly arranged on the inner side wall of the base sleeve 51 along the circumferential direction, and a circumferential blocking portion 53 radially protruding from the base sleeve 51, the inner wall of the flange 4 is provided with an insertion groove 41 (see fig. 1) for the circumferential blocking portion 53 to be embedded, and the circumferential outer wall of the base sleeve 51 and the outer wall of the circumferential blocking portion 53 are uniformly provided with a tight-fitting ridge 52 circumferentially abutting against the inner wall of the flange 4.

Claims

The ultrasonic water meter comprises an upper block (3), a side block (2) and a flow tube (1) penetrating through the side block (2) from the middle part, wherein a top cavity (31) for mounting a display screen and a circuit control module is arranged in the upper block (3), flange plates (4) are arranged at the inlet end and the outlet end of the flow tube (1), the ultrasonic water meter is characterized in that at least installation cavities (21) with downward openings are arranged at two parts of the side block (2) separated by the flow tube (1), the installation cavities (21) are communicated with the flow tube (1), two opposite installation cavities (21) are respectively embedded with ultrasonic modules (7) corresponding to the inner cavities of the flow tube (1), each ultrasonic module (7) comprises a carrier (71) and a lateral ultrasonic transducer (75) fixed on the carrier (71), the bottom surface of the side block (2) is provided with a bottom plate (8) simultaneously covering the openings of the at least two installation cavities (21), a rubber cavity (22) is arranged on the lower surface of the side block (2), an ultrasonic transducer (22) is laterally fixed between the rubber cavity (22) and communicated with the inner cavity (23), protruding ribs (25) of the side block (2), two blocks (23) are arranged on the side of the upper block, and protruding ribs (25) and protruding grooves (25) are arranged on the side of the upper side of the block (2).
2. The ultrasonic water meter according to claim 1, wherein the side block (2) is a rectangular parallelepiped and has a center line in the longitudinal direction inclined to the center line of the flow tube (1).
3. The ultrasonic water meter according to claim 1, wherein a sealing groove (84) is formed in the surface of the bottom plate (8) facing the side block (2), a gasket (81) is disposed in the sealing groove (84), and a plurality of through holes (82) are formed in the bottom plate (8) and the gasket (81) and are arranged along the circumferential direction of the gasket (81).
4. The ultrasonic water meter according to claim 3, wherein an inner frame (83) is convexly disposed in the sealing groove (84), the inner frame (83) includes a curved portion (831) surrounding a lower opening of the mounting cavity (21), a straight portion (832) surrounding the glue cavity (22), and a convex portion (833) covering the U-shaped groove (24), and the gasket (81) is sleeved on an outer wall of the inner frame (83).
5. The ultrasonic water meter according to claim 1, wherein the ultrasonic module (7) further includes an inner wall pressing ring (73) for pressing the carrier (71) and screwed to the installation cavity (21), a step (211) is provided on the inner wall of the installation cavity (21), a stopper ring (72) axially abutting against the step (211) is provided on the carrier (71), a positioning groove (212) is provided on the step (211) in a recessed manner, and a positioning protrusion (721) engaged with the positioning groove (212) is provided on the stopper ring (72).
6. The ultrasonic water meter according to claim 5, wherein a cutting surface (711) is provided on a side of the carrier (71), a mounting groove (712) perpendicular to the cutting surface (711) is provided on the cutting surface (711), a lead passage (77) is provided between a lower end surface of the carrier (71) and a bottom of the mounting groove (712), the ultrasonic transducer (75) is embedded in the mounting groove (712), a sealing ring (74) is embedded between the ultrasonic transducer (75) and the bottom of the mounting groove (712), a ring groove (751) is provided on an end of the ultrasonic transducer (75), and a pressing plate (76) in screw connection with the cutting surface (711) is axially abutted to the ring groove (751).
7. The ultrasonic water meter according to claim 1, wherein an inner box (9) is embedded in the top chamber (31), two top plates (91) are protruded from the bottom surface of the inner box (9), a top cover (6) is fixed to the top of the upper block (3), the top cover (6) includes a cover plate (61) and a nesting groove (62) protruded from a vertical cover plate (61), the cover plate (61) is uniformly provided with a plurality of screw holes along the circumferential direction, the cover plate (61) is provided with a transition groove (64) positioned between the nesting groove (62) and the screw holes around the nesting groove (62), a sealing convex ring (63) is protruded in the transition groove (64), a sealing strip with the outer wall abutted against the inner wall of the top chamber (31) is embedded in the axial surface of the sealing convex ring (63), upper sealing grooves (92) are embedded in the end portions of the nesting groove (62) and the inner box (9), and an annular second sealing strip is embedded in the two upper sealing grooves (92) when in abutting joint.
8. The kinds of ultrasonic water meters of claim 1, wherein the rectifier (5) is embedded in the inner wall of the flange (4) at the inlet of the ultrasonic water meter, the rectifier (5) comprises a base sleeve (51) with round inlet and outlet and inlet caliber larger than outlet caliber, a plurality of rectifying rib plates (54) uniformly arranged on the inner wall of the base sleeve (51) along the circumferential direction and a peripheral blocking part (53) radially protruding from the base sleeve (51), the inner wall of the flange (4) is provided with an embedding groove (41) for the peripheral blocking part (53) to be embedded, and the circumferential outer wall of the base sleeve (51) and the outer wall of the peripheral blocking part (53) are uniformly provided with tight-fitting ribs (52) abutted against the inner wall of the flange (4) along the circumferential direction.