CN212030639U

CN212030639U - Precession vortex flowmeter

Info

Publication number: CN212030639U
Application number: CN202020912704.7U
Authority: CN
Inventors: 雷雨; 贺继红; 闫航飞
Original assignee: Xi'an Jingzhun Electron Co ltd
Current assignee: Xi'an Jingzhun Electron Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-11-27
Anticipated expiration: 2030-05-26

Abstract

The utility model relates to a precession vortex flowmeter relates to the technical field of flowmeter, its include the main casing body, watchcase, connect in cavity spliced pole between watchcase and the main casing body, be equipped with display module on the watchcase, the internal detection components and parts that are equipped with of main casing, display module with electric connection passes between the detection components and parts many signal lines of spliced pole, column connection top intercommunication rigid coupling has the thimble, the coaxial rigid coupling of thimble inner wall has the retaining ring, the retaining ring tip is coaxial to be equipped with flexible ring, the signal line passes flexible ring sets up, thimble inner wall threaded connection has the pushing ring, flexible ring clamp is located between pushing ring and the retaining ring. The utility model discloses have the effect that can improve and detect the accuracy.

Description

Precession vortex flowmeter

Technical Field

The utility model belongs to the technical field of the technique of flowmeter and specifically relates to a precession vortex flowmeter is related to.

Background

The precession vortex flowmeter is widely applied to measuring various airflow flows in the industries of petroleum, chemical industry, electric power, metallurgy, urban gas supply and the like, and is used for detecting the flow of natural gas in natural gas conveying.

Chinese patent No. CN207395814U discloses a precession vortex flowmeter apparatus suitable for different helix angle spinners. An inner runner is arranged in the main shell, the front end of the main shell is connected with the inlet flange, the rear end of the main shell is connected with the outlet flange, and the spinner and the derotator are respectively arranged at the front end and the rear end of the inner runner of the main shell; the top of the middle of the flow channel in the main shell is provided with three through grooves which are vertically arranged at intervals, the piezoelectric sensor is vertically arranged in the through grooves through a telescopic sealing partition plate assembly, and the probe end of the piezoelectric sensor downwards penetrates through the through grooves to extend into the flow channel in the main shell; mechanical regulation control panel has been arranged at main casing body top, and Z type control lever lower extreme and piezoelectric sensor upper end are connected, and Z type control lever upper end passes behind the switch slot and control switch handle fixed connection. The utility model discloses carry out automatic correction and switching according to different helix angle lifting device to piezoelectric sensor's position and preset instrument coefficient to reach the purpose of accurate survey flow.

The above prior art solutions have the following drawbacks: there are various sensors in the flowmeter, be connected with the signal line between sensor and the display, when external pipeline and main casing body intercommunication in the use, there is vibrations in part external pipeline, drives main casing body vibrations during external pipeline vibrations, can drive the signal line emergence when main casing body vibrations and rock, can produce interfering signal when the signal line is undulant, interfering signal can cause the influence to detection circuitry's signal processing to lead to detecting the existence error.

SUMMERY OF THE UTILITY MODEL

To the deficiencies of the prior art, the object of the present invention is to provide a precession vortex flowmeter having an improved detection accuracy.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a precession vortex flowmeter, includes the main casing body, watchcase, connect in cavity spliced pole between watchcase and the main casing body, be equipped with display module on the watchcase, the internal detection components and parts that are equipped with of main casing, display module with electric connection has the penetration between the detection components and parts many signal lines of spliced pole, column connection top intercommunication rigid coupling has the thimble, the coaxial rigid coupling of thimble inner wall has the retaining ring, the retaining ring tip is coaxial to be equipped with flexible ring, the signal line passes flexible ring sets up, thimble inner wall threaded connection has the pushing ring, flexible ring presss from both sides and locates push ring and retaining between the ring.

By adopting the technical scheme, during assembly, the signal wire sequentially penetrates through the threading ring and the flexible ring, the flexible ring slides along the signal wire to be abutted against the retaining ring, the pushing ring is screwed in along the thread on the inner wall of the threading ring, the flexible ring is gradually extruded along with the screwing of the pushing ring, and at the moment, the inner wall of the flexible ring is extruded towards one side of the signal wire due to the blocking effect of the inner wall of the threading ring, so that the signal wire can be fixed; be used for fixed signal line after extrudeing the flexible ring, can be when main casing body takes place vibrations, carry out the shock attenuation to the signal line by the flexible ring, avoid shaking relatively between signal line and the main casing body and range too big and lead to the signal line to produce interfering signal, reduce interfering signal and cause the influence to detection circuitry, and then reduce detection error.

The present invention may be further configured in a preferred embodiment as: the flexible ring is a soft silica gel ring.

Through adopting above-mentioned technical scheme, establish flexible ring as soft silica gel circle, usable its soft characteristic is more firm with the signal line extrusion.

The present invention may be further configured in a preferred embodiment as: many the outside cover of signal line is equipped with flexible protective sleeve, flexible protective sleeve can pass in proper order keep off ring, flexible ring and push ring, under the flexible ring extrusion state, flexible ring inner wall can with flexible protective sleeve extrudees.

Through adopting above-mentioned technical scheme, set up flexible protective sleeve and enclose a plurality of signal lines and establish, can unify the protection with many signal lines, also can carry out further fastening to the signal line to avoid taking place between signal line and the main casing body and rock, can further improve measurement accuracy.

The present invention may be further configured in a preferred embodiment as: and the inner wall of the flexible protection sleeve pipe is fixedly connected with a plurality of flexible anti-slip strips along the axial direction of the flexible protection sleeve pipe.

Through adopting above-mentioned technical scheme, set up flexible antislip strip and can avoid taking place relative slip between the signal line, can be fixed more firm with the signal line.

The present invention may be further configured in a preferred embodiment as: the watchcase with the thimble outer wall rotates to be connected, the spliced pole roof with the watchcase diapire is the connection face of the two, arbitrary connect the face seted up with the thimble coaxial and not confined spacing annular, another connect the face rigid coupling to have and to follow the gliding limit slide of spacing annular, the angle of seting up of spacing annular is less than 360.

Through adopting above-mentioned technical scheme, in the use, for the user can all observe the watchcase in takeover pipeline axis both sides outside for being convenient for, the user can rotate the watchcase, rotates the in-process of watchcase, because the constraint effect of flexible ring to the signal line, can avoid the signal line to rock the range too big to guaranteed measurement accuracy promptly and can be convenient for the user to use again.

The present invention may be further configured in a preferred embodiment as: detect components and parts including flow sensor, the protruding tight piece that presss from both sides that is equipped with of flow sensor outer wall, main casing outer wall runs through and has seted up first connecting hole, the coaxial rigid coupling of first connecting hole inner wall has first bulge loop, first connecting hole inner wall threaded connection has first push ring that supports, press from both sides tight piece press from both sides tightly in first bulge loop with first between the terminal surface of push ring, press from both sides tight piece with first bulge loop and first between the both ends wall of push ring are pressed from both sides respectively and are equipped with first sealing ring, first sealing ring tip rigid coupling has the extension to first bulge loop and first extension sealing ring that supports the push ring inner circle.

By adopting the technical scheme, when the airflow passes through the main shell, the flow sensor transmits a signal to the display component through the signal wire, so that a user can read data; set up first bulge loop and first to push away the ring and will press from both sides tight piece clamp, can avoid main casing internal chamber atmospheric pressure too big and impact flow sensor to with main casing body separation, can avoid flow sensor to take place to rock promptly to avoid the gas leakage in the main casing, it can improve the detection precision.

The present invention may be further configured in a preferred embodiment as: the main casing lateral wall be equipped with the line hole of crossing of first connecting hole and spliced pole inner chamber intercommunication, with the signal line that flow sensor is connected passes through the line hole setting.

By adopting the technical scheme, the signal wire connected with the flow sensor passes through the wire passing hole, so that the integration of the main shell can be improved.

The present invention may be further configured in a preferred embodiment as: the first connecting hole is kept away from the open end threaded connection of main casing body inner chamber has the seal receptacle, the seal receptacle with press from both sides between the main casing body and be equipped with the second sealing ring.

Through adopting above-mentioned technical scheme, set up seal receptacle and second sealing member at the open end of first connecting hole, can avoid external air to pass first connecting hole and enter into in the main casing, can further improve and detect the precision.

The present invention may be further configured in a preferred embodiment as: detect components and parts still include pressure sensor and temperature sensor, main casing roof runs through and has seted up two second connecting holes, each second connecting hole female connection has the connecting block, pressure sensor and temperature sensor locate respectively on the connecting block, the connecting block with be equipped with the third sealing ring between the second connecting hole inner wall, the connecting block is located in the spliced pole.

Through adopting above-mentioned technical scheme, when installation pressure sensor and temperature sensor, connect the two and connecting block respectively, arrange the third sealing ring in the second connecting hole again, be connected connecting block and second connecting hole at last to can be fixed with pressure sensor, temperature sensor with the connecting block, also can guarantee the sealed effect between connecting block and the main casing body, can guarantee to detect the precision.

The present invention may be further configured in a preferred embodiment as: the spliced pole with the main casing body can be dismantled to be connected and press from both sides between the two and be equipped with the fourth sealing ring.

Through adopting above-mentioned technical scheme, set up the fourth sealing ring between spliced pole and the main casing body, can avoid external air to pass through the junction of spliced pole and the main casing body and get into in the main casing body to the accuracy of testing process has been guaranteed.

To sum up, the utility model discloses a following at least one useful technological effect:

1. by damping the signal wire, interference signals generated by overlarge shaking amplitude of the signal wire can be avoided, the influence of the interference signals on a detection circuit is reduced, and further, the detection error is reduced;

2. the generation of interference signals can be further reduced by arranging the flexible protective sleeve;

3. the watch case and the main casing are rotatably connected, so that the watch case can be conveniently used by a user.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic sectional view taken along the line A-A in FIG. 1;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

FIG. 4 is an enlarged partial schematic view of portion B of FIG. 2;

fig. 5 is a partial schematic view of the plane B-B in fig. 1.

In the figure, 1, a main housing; 11. a fourth seal ring; 12. a wire passing hole; 2. a watch case; 21. rotating the hole; 22. sealing the ring groove; 23. a rubber seal ring; 24. a limiting ring groove; 25. a display component; 3. connecting columns; 31. a threading ring; 32. a limiting clamping groove; 33. an outer snap spring; 34. a limiting slide block; 41. a flow sensor; 411. a clamping block; 42. a pressure sensor; 43. a temperature sensor; 5. a first connection hole; 51. a first convex ring; 52. a first push ring; 53. a first seal ring; 54. an extension seal ring; 55. a force application block; 56. a sealing seat; 57. a second seal ring; 6. a second connection hole; 61. connecting blocks; 62. a boss; 63. a third seal ring; 7. a flexible protective sleeve; 71. a flexible anti-slip strip; 72. a stop ring; 73. a flexible ring; 74. a pushing ring; 8. and a signal line.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, a precession vortex flowmeter disclosed in the present invention includes a main housing 1, a case 2, and a hollow connecting column 3 connected between the case 2 and the main housing 1.

Referring to fig. 2 and 3, the connecting column 3 is detachably connected with the main casing 1, the connecting column 3 and the main casing 1 are fixed through screws, a fourth sealing ring 11 is clamped between the top wall of the main casing 1 and the bottom wall of the connecting column 3, and the fourth sealing ring 11 is made of rubber.

Referring to fig. 2 and 4, the top of the connecting column 3 is integrally communicated and fixedly connected with a threading ring 31, the bottom wall of the watch case 2 is provided with a rotating hole 21 for the threading ring 31 to pass through, the inner wall of the rotating hole 21 is rotatably connected with the outer wall of the rotating hole 21, the hole axis clearance of the rotating hole 21 and the rotating hole 21 is 0.02mm, the inner wall of the rotating hole 21 is provided with a sealing ring groove 22, and a rubber sealing ring 23 is arranged in the sealing ring groove 22; one end of the threading ring 31 penetrating through the rotating hole 21 is circumferentially provided with a limiting clamping groove 32, and an outer clamp spring 33 for blocking the limiting ring is clamped in the limiting clamping groove 32; the top wall of the connecting column 3 and the bottom wall of the watch case 2 are both connecting surfaces, the connecting surface on the watch case 2 is provided with a limiting ring groove 24 which is coaxial with the threading ring 31 and is not sealed, the connecting surface of the connecting column 3 is welded with a limiting slide block 34 which can slide along the limiting ring groove 24, the limiting slide block 34 is cylindrical, the opening angle of the limiting ring groove 24 is smaller than 360 degrees, and the opening angle of the limiting ring groove 24 is 180 degrees in the embodiment.

Referring to fig. 3 and 5, a display assembly 25 is disposed on the watch case 2, the display assembly 25 includes a detection circuit board, an analog circuit board electrically connected to the detection circuit board, and a display electrically connected to the analog circuit board; the detection circuit board and the simulation circuit board are respectively fixed with the watchcase 2 through screws, a window is arranged on the watchcase 2, and the display is fixedly connected with the inner wall of the window through screws. Be equipped with in the main casing body 1 and detect components and parts, detect components and parts and include flow sensor 41, pressure sensor 42 and temperature sensor 43, equal electrically connected with signal line 8 between each sensor and the detection circuit board.

Referring to fig. 5, the flow sensors 41 are cylindrical, in this embodiment, there are 2 flow sensors 41, two flow sensors 41 are symmetrically disposed on the main housing 1, a clamping block 411 is convexly disposed on an outer wall of the flow sensor 41, the outer wall of the main housing 1 is penetrated by a first connecting hole 5, an inner wall of the first connecting hole 5 is coaxially and fixedly connected with a first convex ring 51, an inner wall of the first connecting hole 5 is in threaded connection with a first abutting ring 52, the clamping block 411 is clamped between end faces of the first convex ring 51 and the first abutting ring 52, a first sealing ring 53 is respectively clamped between the clamping block 411 and two end walls of the first convex ring 51 and the first abutting ring 52, an end portion of the first sealing ring 53 is integrally and fixedly connected with an extending sealing ring 54 extending to an inner ring of the first convex ring 51 and the first abutting ring 52, the first sealing ring 53 and the extending sealing ring 54 are made of rubber, the first abutting ring 52 is disposed on a side of the first convex ring 51 away from an, a force application block 55 in the shape of a regular hexagon is integrally fixed to one end of the first pushing ring 52 away from the first convex ring 51.

Referring to fig. 3 and 5, the side wall of the main housing 1 is provided with a wire passing hole 12 communicated with the first connection hole 5 and the inner cavity of the connection column 3, and the signal wire 8 connected with the flow sensor 41 is arranged through the wire passing hole 12. The opening end of the first connection hole 5 away from the inner cavity of the main casing 1 is in threaded connection with a sealing seat 56 with a T-shaped section, a second sealing ring 57 is clamped between the sealing seat 56 and the main casing 1, and the second sealing ring 57 is made of rubber.

Referring to fig. 3, two second connecting holes 6 are formed in the top wall of the main casing 1 in a penetrating manner, each second connecting hole 6 is internally threaded with a connecting block 61, a pressure sensor 42 and a temperature sensor 43 are respectively arranged on the connecting blocks 61, the pressure sensor 42 and the temperature sensor 43 can be fixedly connected with the connecting blocks 61 through screws and can also be fixedly connected in other manners, an annular boss 62 is integrally and convexly arranged on the inner wall of each second connecting hole 6, a third sealing ring 63 is arranged between the end wall of each connecting block 61 and the end wall of the boss 62 in a clamping manner, the third sealing ring 63 is made of rubber, and a signal wire 8 connected with the pressure sensor 42 and the temperature sensor 43 penetrates through.

Referring to fig. 4, the outside cover of many signal lines 8 is equipped with flexible protective sleeve pipe 7, and flexible protective sleeve pipe 7 inner wall has a plurality of flexible antislip strips 71 along the integrative rigid coupling of sleeve pipe axial, and the material of flexible protective sleeve pipe 7 and flexible antislip strip 71 is rubber in this embodiment.

Referring to fig. 4, the inner wall of the threading ring 31 is coaxially welded with a retaining ring 72, the end of the retaining ring 72 is coaxially provided with a flexible ring 73, the flexible ring 73 is a soft silica gel ring, the flexible protective sleeve 7 passes through the flexible ring 73, the inner wall of the threading ring 31 is in threaded connection with a pushing ring 74, the flexible ring 73 is clamped between the pushing ring 74 and the retaining ring 72, and the inner wall of the flexible ring 73 can be extruded with the flexible protective sleeve 7 in the extruding state of the flexible ring 73.

The implementation principle of the embodiment is as follows: during the use, the air current passes through main casing body 1 inner chamber, and flow sensor 41, pressure sensor 42, temperature sensor 43 transmit the signal for the detection circuit board respectively, and the detection circuit board transmits the signal for the analog circuit board again, presents data on the display screen at last.

When the flow sensor 41 is installed, the two first sealing rings 53 are respectively sleeved at two ends of the first convex ring 51, the first pushing ring 52 is screwed, the two first sealing rings 53 are clamped between the first convex ring 51 and the first pushing ring 52, after the fixation, the signal line 8 connected with the flow sensor 41 passes through the line passing hole 12 and extends into the inner cavity of the connecting column 3, and then the sealing seat 56 is in threaded connection with the main shell 1.

When the pressure sensor 42 and the temperature sensor 43 are installed, the connecting block 61 is connected with the second connecting hole 6, then the plurality of signal wires 8 penetrate through the flexible protective sleeve 7, then the flexible protective sleeve 7 penetrates through the flexible ring 73, finally the pushing ring 74 is screwed, so that the flexible ring 73 is deformed to fix the signal wires 8, finally the threading ring 31 penetrates through the rotating hole 21, and the watch case 2 is fixed by the outer snap spring 33.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a precession vortex flowmeter, includes main casing body (1), watchcase (2), connect in cavity spliced pole (3) between watchcase (2) and the main casing body (1), be equipped with display module (25) on watchcase (2), be equipped with detection components and parts in the main casing body (1), display module (25) with electric connection has the passage between the detection components and parts many signal lines (8) of spliced pole (3), its characterized in that: spliced pole (3) top intercommunication rigid coupling has thimble (31), the coaxial rigid coupling of thimble (31) inner wall has the retaining ring (72), retaining ring (72) tip is coaxial to be equipped with flexible ring (73), signal line (8) are passed flexible ring (73) set up, thimble (31) inner wall threaded connection has the ring of jostling (74), flexible ring (73) press from both sides and locate jostling between ring (74) and retaining ring (72).

2. A precession vortex flowmeter according to claim 1 wherein: the flexible ring (73) is a soft silica gel ring.

3. A precession vortex flowmeter according to claim 1 wherein: many the outside cover of signal line (8) is equipped with flexible protective sleeve (7), flexible protective sleeve (7) can pass in proper order keep off ring (72), flexible ring (73) and push ring (74), under flexible ring (73) extrusion state, flexible ring (73) inner wall can with flexible protective sleeve (7) extrusion.

4. A precession vortex flowmeter according to claim 3 wherein: the inner wall of the flexible protective casing (7) is fixedly connected with a plurality of flexible anti-slip strips (71) along the axial direction of the flexible protective casing (7).

5. A precession vortex flowmeter according to claim 1 wherein: watchcase (2) with thimble (31) outer wall rotates to be connected, spliced pole (3) roof with watchcase (2) diapire is the connection face of the two, arbitrary connect the face seted up with thimble (31) coaxial and not confined spacing annular (24), another connect the face rigid coupling to have and to follow spacing annular (24) gliding spacing slider (34), the angle of seting up of spacing annular (24) is less than 360.

6. A precession vortex flowmeter according to claim 1 wherein: detect components and parts including flow sensor (41), the protruding tight piece (411) of pressing from both sides that is equipped with of flow sensor (41) outer wall, main casing body (1) outer wall runs through and has seted up first connecting hole (5), the coaxial rigid coupling of first connecting hole (5) inner wall has first bulge loop (51), first connecting hole (5) inner wall threaded connection has first push ring (52) of propping, press from both sides tight piece (411) press from both sides tightly in first bulge loop (51) with between the terminal surface of first push ring (52) of propping, press from both sides tight piece (411) with press from both sides respectively between the both ends wall of first bulge loop (51) and first push ring (52) and be equipped with first sealing ring (53), first sealing ring (53) tip rigid coupling has the extension sealing ring (54) that extend to first bulge loop (51) and first push ring (52) inner circle of propping.

7. A precession vortex flowmeter according to claim 6 wherein: the main casing body (1) lateral wall be equipped with first connecting hole (5) and spliced pole (3) inner chamber intercommunication cross line hole (12), with signal line (8) that flow sensor (41) are connected pass through the setting of line hole (12).

8. A precession vortex flowmeter according to claim 6 wherein: the first connecting hole (5) is far away from an opening end thread of an inner cavity of the main shell (1) and is connected with a sealing seat (56), and a second sealing ring (57) is clamped between the sealing seat (56) and the main shell (1).

9. A precession vortex flowmeter according to claim 1 wherein: detect components and parts still include pressure sensor (42) and temperature sensor (43), casing (1) roof runs through and has seted up two second connecting holes (6), each second connecting hole (6) female connection has connecting block (61), pressure sensor (42) and temperature sensor (43) are located respectively on connecting block (61), connecting block (61) with be equipped with third sealing ring (63) between second connecting hole (6) inner wall, connecting block (61) are located in spliced pole (3).

10. A precession vortex flowmeter according to claim 1 wherein: the connecting column (3) and the main shell (1) are detachably connected, and a fourth sealing ring (11) is clamped between the connecting column and the main shell.