CN113465688A

CN113465688A - Anti-vibration probe of vortex shedding flowmeter

Info

Publication number: CN113465688A
Application number: CN202110783575.5A
Authority: CN
Inventors: 许永存
Original assignee: Sinier (nanjing) Process Control Co ltd
Current assignee: Sinier (nanjing) Process Control Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2021-10-01

Abstract

The invention relates to the technical field of flow measurement, in particular to an anti-seismic probe of a vortex shedding flowmeter; vortex flowmeter's antidetonation probe includes the support, first probe, second probe and runner pipe, the runner pipe has first mating holes, second mating holes and fluid passage, first mating holes sets up in the center department of runner pipe, the second mating holes then sets up in the entry end of runner pipe, and first mating holes and second mating holes all communicate with fluid passage, fluid passage then sets up along the length extending direction of runner pipe, utilize the cooperation of first mating holes and second mating holes, come first probe and second probe of pegging graft respectively, and then eliminate the influence of external environment's vibrations in the measured data to the measuring result, also effectively promote measurement accuracy and antidetonation nature.

Description

Anti-vibration probe of vortex shedding flowmeter

Technical Field

The invention relates to the technical field of flow measurement, in particular to an anti-seismic probe of a vortex shedding flowmeter.

Background

The vortex shedding flowmeter is a speed type flowmeter manufactured by utilizing a Karman principle and a piezoelectric technology, and has the characteristics of high sensitivity, wide application range, stable work and the like;

when the existing vortex shedding flowmeter is used for measurement, measurement errors are easily caused due to external interference, and under the condition of large external vibration interference, a probe of the vortex shedding flowmeter in the prior art is difficult to accurately measure fluid to be measured.

Disclosure of Invention

The invention aims to provide an anti-vibration probe of a vortex shedding flowmeter, which aims to solve the problem that the vortex shedding flowmeter in the prior art is easily interfered by external vibration.

In order to achieve the purpose, the invention provides an anti-seismic probe of a vortex flowmeter, which comprises a support, a first probe, a second probe and a flow pipe, wherein the support is matched with the first probe and arranged on the outer side of the first probe;

the circulating pipe is provided with a first matching hole, a second matching hole and a fluid channel, the first matching hole is arranged at the center of the circulating pipe, the second matching hole is arranged at the inlet end of the circulating pipe, the first matching hole and the second matching hole are communicated with the fluid channel, and the fluid channel is arranged along the length extending direction of the circulating pipe.

The first probe and the second probe are respectively inserted into the first matching hole and the second matching hole, so that the measurement of vibration information of the flowmeter and the measurement of vibration caused by fluid flow are realized, and the influence of vibration on a detection result is reduced.

The circulation pipe comprises a vortex generating body, a link and a circulation pipe body, wherein the vortex generating body is arranged on the inner side of the circulation pipe body and is fixedly connected with the circulation pipe body, and the link is arranged at the inlet end of the circulation pipe body and is communicated with the circulation pipe body.

The vortex generator is used for measurement, and the link is matched with the second matching hole to realize measurement of vibration of the flowmeter.

The support comprises a filter screen and a connecting ring, the filter screen is matched with the first probe and arranged on the lower side of the connecting ring, and the connecting ring is clamped with the first probe.

And filtering impurities in the fluid by using the filter screen so as to avoid the influence of the impurities on the measurement result of the first probe.

The vortex generating body is a prism body with a rhombic section, and is also provided with four concave arc surfaces which are mutually symmetrically arranged.

The concave arc surface is utilized to enable the eddy current to be completely generated.

Wherein, first probe includes that piezoelectric patch, signal line, joint are protruding and draw forth the body, the joint protruding set up in draw forth the upside of body, and with draw forth body fixed connection, the joint protruding still with first mating holes agrees with, the piezoelectric patch then set up in draw forth the downside of body, and with the signal line is connected.

The piezoelectric sheet is used for converting piezoelectric signals, and the signal wire is externally connected with a dial plate to display data.

The piezoelectric sheet includes a vibrating piece, a base layer, and a base electrode, the vibrating piece is disposed on a lower side of the lead body and fixedly connected to the base electrode, and the base layer is disposed on an inner side of the base electrode and bonded to the base electrode.

The vibrating piece, the base electrode, and the base layer are used to convert the pressure of the eddy current into an electric signal.

According to the anti-seismic probe of the vortex shedding flowmeter, the first probe and the second probe are respectively inserted and connected by utilizing the matching of the first matching hole and the second matching hole, so that the influence of vibration of an external environment in measurement data on a measurement result is eliminated, and the measurement accuracy and the anti-seismic property are effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic axial view of the anti-seismic probe of the vortex shedding flowmeter according to the present invention.

FIG. 2 is a schematic sectional view of an anti-seismic probe of the vortex shedding flowmeter according to the present invention.

FIG. 3 is a schematic axial view of the first probe of the anti-seismic probe of the vortex shedding flowmeter provided by the invention.

FIG. 4 is a schematic cross-sectional view of the first probe of the anti-seismic probe of the vortex shedding flowmeter provided by the invention.

FIG. 5 is a schematic axial view of the connection ring of the anti-vibration probe of the vortex shedding flowmeter according to the present invention.

FIG. 6 is a schematic axial view of the vortex generator of the anti-seismic probe of the vortex shedding flowmeter according to the present invention.

1-bracket, 2-first probe, 3-second probe, 4-runner tube, 11-filter screen, 12-connecting ring, 121-connecting projection, 122-circuit hole, 21-piezoelectric plate, 22-signal line, 23-clamping projection, 24-leading-out body, 211-vibrating plate, 212-base layer, 213-base electrode, 241-clamping groove, 242-sealing ring, 41-first matching hole, 42-second matching hole, 43-fluid channel, 44-vortex generating body, 45-link, 46-flow tube body, 441-concave arc surface, 451-locking ring and 452-bolt.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 6, the present invention provides an anti-seismic probe of a vortex flowmeter, the anti-seismic probe of the vortex flowmeter includes a support 1, a first probe 2, a second probe 3 and a flow pipe 4, the support 1 is matched with the first probe 2 and is disposed at an outer side of the first probe 2, the first probe 2 is engaged with the flow pipe 4 and is disposed at an upper side of the flow pipe 4, the second probe 3 is disposed at an inlet end of the flow pipe 4 and is inserted into the flow pipe 4, and the second probe 3 and the first probe 2 have the same structure;

the flow pipe 4 has a first fitting hole 41, a second fitting hole 42 and a fluid passage 43, the first fitting hole 41 is provided at the center of the flow pipe 4, the second fitting hole 42 is provided at the inlet end of the flow pipe 4, and both the first fitting hole 41 and the second fitting hole 42 communicate with the fluid passage 43, and the fluid passage 43 is provided along the length extension direction of the flow pipe 4.

In this embodiment, the second engaging hole 42 of the bracket 1 is used to engage with the second probe 3 to measure the influence of the external environment on the flow meter, the first probe 2 is used to measure the fluid, the flow pipe 4 is used to engage with the first probe 2 to generate the vortex, the first engaging hole 41 is used to engage with the first probe 2 to measure the fluid, and the fluid passage 43 is used to generate the vortex.

Further, the circulation pipe 4 includes a vortex generator 44, a link 45 and a circulation pipe 46, the vortex generator 44 is disposed inside the circulation pipe 46 and is fixedly connected to the circulation pipe 46, the link 45 is disposed at an inlet end of the circulation pipe 46 and is communicated with the circulation pipe 46;

the support 1 comprises a filter screen 11 and a connecting ring 12, the filter screen 11 is matched with the first probe 2 and is arranged on the lower side of the connecting ring 12, and the connecting ring 12 is clamped with the first probe 2;

the vortex generating body 44 is a prism body with a rhombic section, and the vortex generating body 44 further comprises four concave arc surfaces 441 which are mutually symmetrically arranged.

In this embodiment, the vortex generating body assists in generating a complete vortex, the link 45 cooperates with the second cooperating hole 42 to further achieve the placement of the second probe 3, the flow tube 46 is used for moving the fluid, the filter screen 11 is disposed on the outer side of the first probe 2 to filter impurities in the fluid, so as to prevent the impurities in the fluid from affecting the precision of the first probe 2, the connection ring 12 is used for allowing the filter screen 11 to be sleeved on the outer side of the first probe 2, and the concave arc surface 441 is used for assisting in generating a complete vortex.

Further, the first probe 2 includes a piezoelectric plate 21, a signal line 22, a clamping protrusion 23 and a lead-out body 24, the clamping protrusion 23 is disposed on the upper side of the lead-out body 24 and is fixedly connected to the lead-out body 24, the clamping protrusion 23 is also engaged with the first mating hole 41, and the piezoelectric plate 21 is disposed on the lower side of the lead-out body 24 and is connected to the signal line 22;

the piezoelectric sheet 21 includes a vibration plate 211, a base layer 212, and a base electrode 213, the vibration plate 211 is disposed below the lead body 24 and fixedly connected to the base electrode 213, and the base layer 212 is disposed inside the base electrode 213 and bonded to the base electrode 213.

In this embodiment, the piezoelectric plate 21 generates an electrical signal by deformation and transmits the electrical signal to the outside through the signal line 22, the clamping protrusion 23 is used to improve the connection strength between the first probe 2 and the flow tube 46, the lead-out body 24 is used to place the piezoelectric plate 21 in a matching manner, and the vibration plate 211 absorbs the vibration of the fluid and transmits the vibration to the base layer 212 and the base electrode 213, thereby realizing the conversion of the piezoelectric signal.

Further, the connection ring 12 has a plurality of connection protrusions 121 and a circuit hole 122, the connection protrusions 121 are disposed around the connection ring 12, the connection protrusions 121 are all clamped with the lead-out body 24, and the circuit hole 122 penetrates through the connection ring 12 in the vertical direction and is matched with the signal line 22;

the leading-out body 24 is provided with a clamping groove 241 and a sealing ring 242, the clamping groove 241 is arranged at the lower side of the leading-out body 24 and is matched with the connecting ring 12, the sealing ring 242 is arranged at the upper side of the leading-out body 24, and the sealing ring 242 is arranged at the joint of the leading-out body 24 and the clamping bulge 23;

the link 45 comprises a locking ring 451 and a latch 452, the locking ring 451 is engaged with the second fitting hole 42 and is disposed on the upper side of the second fitting hole 42, and the latch 452 is inserted into the locking ring 451.

In this embodiment, the connection protrusion 121 is used to enhance the connection strength between the connection ring 12 and the filter screen 11, the circuit hole 122 is used to allow the signal line 22 to pass through, the engagement groove 241 is matched with the connection protrusion 121, the sealing ring 242 is used to enhance the sealing performance of the first probe 2, and the locking ring 451 is used to match the latch 452, so as to enhance the stability between the second probe 3 and the second matching hole 42.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An anti-seismic probe of a vortex shedding flowmeter, which is characterized in that,

the anti-seismic probe of the vortex flowmeter comprises a support, a first probe, a second probe and a flow pipe, wherein the support is matched with the first probe and is arranged on the outer side of the first probe, the first probe is matched with the flow pipe and is arranged on the upper side of the flow pipe, the second probe is arranged at the inlet end of the flow pipe and is spliced with the flow pipe, and the second probe and the first probe have the same structure;

2. The anti-seismic probe of a vortex shedding flowmeter of claim 1,

3. The anti-seismic probe of a vortex shedding flowmeter of claim 2,

the support includes filter screen and go-between, the filter screen with first probe agrees with, and set up in the downside of go-between, the go-between then with first probe joint.

4. An anti-seismic probe of a vortex shedding flowmeter according to claim 3,

5. The anti-seismic probe of a vortex shedding flowmeter of claim 1,

first probe includes that piezoelectric patches, signal line, joint are protruding and draw forth the body, the joint protruding set up in draw forth the upside of body, and with draw forth body fixed connection, the joint protruding still with first mating holes agrees with, piezoelectric patches then set up in draw forth the downside of body, and with the signal line is connected.

6. An anti-seismic probe of a vortex shedding flowmeter according to claim 5,