CN202547699U - Dual-measuring mode diaphragm capsule type vortex shedding flowmeter - Google Patents
Dual-measuring mode diaphragm capsule type vortex shedding flowmeter Download PDFInfo
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- CN202547699U CN202547699U CN2012201804745U CN201220180474U CN202547699U CN 202547699 U CN202547699 U CN 202547699U CN 2012201804745 U CN2012201804745 U CN 2012201804745U CN 201220180474 U CN201220180474 U CN 201220180474U CN 202547699 U CN202547699 U CN 202547699U
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Abstract
The utility model relates to a dual-measuring mode diaphragm capsule type vortex shedding flowmeter. Through the utility model, the problem that precise redundancy measurement cannot be realized at the same flow point in the prior art can be solved very well. The dual-measuring mode diaphragm capsule type vortex shedding flowmeter is technically characterized in that a diaphragm capsule type sensor and a converter component are mounted on a changeover valve; the changeover valve is mounted on a flow tube sensor mounting seat in a movable connection mode; two diaphragm capsule type sensor mounting seats are also arranged on the changeover valve; the sensor mounting seat is provided with two diaphragm capsule type sensor mounting chambers; a diaphragm capsule type sensor is mounted in the diaphragm capsule type sensor mounting chamber; the size structure of the diaphragm capsule type sensor mounting seat is the same as that of the flow tube sensor mounting seat. The dual-measuring mode diaphragm capsule type vortex shedding flowmeter provided by the utility model really realizes redundant signal, guarantees the overall performance of the vortex shedding flowmeter and the test accuracy, and also has good generality and flexibility.
Description
Technical field
The utility model relates to a kind of bellow-type vortex shedding flow meter, and particularly a kind of have a bellow-type vortex shedding flow meter of obtaining two measurement patterns of accurate redundant measurement effect at same flow point.
Background technology
Vortex shedding flow meter is a kind of flow measurement instrument of movement-less part, and it is wide to have usable range, and measuring accuracy is high; It is little to wear and tear; But the output signal is linear and long-distance transmissions, is convenient to advantages such as installation and maintenance, since late 1960s, vortex shedding flow meter came out; Through nearly 40 years development, the row of universal flow have been ranked among.The method of operation of vortex flow sensors is to be based upon on the utilization of the periodic undulations in the Karman vortex street, when detected fluid flows through baffle, when particularly flowing through certain non-aerodynamic body, will form this vortex street.At present; The vortex shedding flow meter of domestic application is single measurement structure form; The safe coefficient of the reception signal of control system depends on the output signal that vortex shedding flow meter is single fully, and when signal output procedure or flowmeter itself broke down, the safety of control system just can't be guaranteed.For realizing the desired redundant signals of control system; Some users adopt two instrument in addition measuring mode obtain redundant signals; This just requires to need between the flowmeter to lay long straight length, and therefore no matter be from the engineering aspect, or burden has all been brought to the user in the cost aspect; The redundancy-type vortex shedding flow meter that other has some users then to adopt flowmeter producer to provide, two vortex shedding flow meters are formed a redundancy-type vortex shedding flow meter through simple Type of Welding, and the influence that the body convection cell takes place at the upper reaches makes the downstream sensor measurement error occur.
Chinese patent publication number CN201637439U; November 17 2010 day for announcing; A kind of bellow-type vortex flow sensors is disclosed; It comprises a putamina that is fixedly plugged on the vortex shedding flow meter, also comprises flexible sheet that the end of going deep into said vortex shedding flow meter around said putamina is provided with, is arranged on the inner sensitive element group of bellows that described flexible sheet and described putamina end form, is filled in medium between described sensitive element group and the described flexible sheet, an end is connected with described sensitive element group and the other end is drawn the lead-in wire hermetic terminal of described bellows.This technical scheme must adopt two instrument to carry out measuring mode and obtain redundant signals, can't obtain the problem of redundant measurement accurately at same flow point so this technical scheme still exists.
The utility model content
The purpose of the utility model is to solve and existingly in the above-mentioned prior art must adopts two instrument to carry out measuring mode to obtain redundant signals; Can't obtain the problem of redundant measurement accurately at same flow point, a kind of bellow-type vortex shedding flow meter of obtaining two measurement patterns of accurate redundant measurement effect at same flow point that has is provided.
The utility model solves the technical scheme that its technical matters adopted: the bellow-type vortex shedding flow meter of a kind of pair of measurement pattern; Comprise the flowtube that produces the whirlpool signal; Be fixedly connected with the sensor mount pad on the flowtube; Be installed in the changeover valve on the flowtube sensor mount pad, be installed in bellow-type sensor and converter assembly on the changeover valve, changeover valve is installed on the flowtube sensor mount pad through the mode that flexibly connects; Also have two bellow-type sensor mount pads on the changeover valve; The sensor mount pad is provided with two bellow-type sensor installation rooms, and a bellow-type sensor is installed in the bellow-type sensor installation room, and the dimensional structure of bellow-type sensor mount pad is identical with flowtube sensor mount pad.Be provided with like this; The both sides whirlpool signal that flowtube produces passes through changeover valve; Under non-interfering situation, get into two sensor installation room seats respectively, make the signal that is installed in the sensor reception on the changeover valve be equal to the reception signal that is installed on the flowtube mount pad, two identical bellow-type vortex shedding flow meters are installed on the changeover valve; Two identical bellow-type vortex shedding flow meters carry out the measurement of flow simultaneously to the medium in the changeover valve, reach the redundant data measured effect.
As preferably, described changeover valve comprises changeover valve holder, two bellow-type sensor mount pads and inner split channel, and described changeover valve integral body is Y-shaped, and described changeover valve holder and two bellow-type sensor mount pads are integral structure.Be provided with like this, changeover valve is installed and can under the prerequisite that does not change the flowtube structure, be installed with flowtube easily, matees more or less freely.
As preferably, described changeover valve holder comprises a whirlpool division board, whirlpool division board and changeover valve one or split design, and the contour structure size of whirlpool division board is identical with the contour structure size of bellow-type sensor.
As preferably, described flowtube is a bellow-type sensor stream buret, and bellow-type sensor stream buret inside is provided with T type generation body, is provided with two open slots in the flowtube sensor mount pad, two open slots respectively with the body both sides take place communicates.Design makes the whirlpool signal of T type generation body generation can get into the sensor installation room swimmingly like this.
As preferably; Described whirlpool division board inserts and is mounted in the flowtube sensor mount pad; Flowtube sensor mount pad is separated to form left whirlpool chamber and right whirlpool chamber, and said whirlpool division board is arranged with U type bluff body outward, and the bellow-type sensor also is arranged with bluff body outward; U type bluff body structure is identical with the bluff body that is set in the bellow-type sensor, fits in the base of U type bluff body and the base of whirlpool division board.The material of U type bluff body adopts the high temperature design, plays the effect that high temperature is isolated, sensor installation room on the flowtube is divided into about two whirlpool chambers, communicate with T type generation body both sides respectively.
As preferably; The inner split channel of described changeover valve comprises a whirlpool passage, b whirlpool passage, c whirlpool passage, d whirlpool passage; A whirlpool passage, b whirlpool passage, c whirlpool passage, d whirlpool passage distribute on axis direction in twos; A whirlpool passage, b whirlpool passage and left whirlpool chamber conducting, c whirlpool passage, d whirlpool passage and right whirlpool chamber conducting.Sensor installation room in the two sensors mount pad on the changeover valve just receives respectively by the both sides whirlpool signal that body produces takes place simultaneously like this.
As preferably, the structure of the bellow-type sensor mount pad on the said changeover valve is identical with the structure of flowtube sensor mount pad.Design like this; Guaranteed that existing bellow-type vortex shedding flow meter can be installed in the bellow-type sensor mount pad; Can be installed in simultaneously again in the sensor mount pad on the flowtube, during use, the utility model can be replaced existing bellow-type vortex shedding flow meter; Be installed on the existing mounted flowtube, improvement cost is lower more conveniently.
As preferably, be provided with high-temperature sealing material between changeover valve holder and the flowtube sensor mount pad, also be provided with high-temperature sealing material between the bellow-type sensor mount pad on bellow-type sensor and the changeover valve.
The substantial effect of the utility model is: (1) divides different passages to gather because the pressure pulse that the body both sides are produced just will take place this changeover valve; What in this process, have no stops the variation that influences pressure pulse; Arriving the bellow-type sensor site can not influence measurement effect, thereby has guaranteed the overall performance of vortex shedding flow meter and the accuracy of test;
(2) the residing work condition environment of two bellow-type sensors that is installed on the changeover valve bellow-type sensor mount pad is just the same, and the signal pulse that collects is identical, thereby makes that the flow signal of output is identical, really accomplishes the realization of redundant signals;
(3) realization of whole pair of measurement pattern does not change original flowtube part, and length, the mounting means of flowtube have no change, provides cost savings, and for user installation, replacing provide convenience, has improved the versatility and the dirigibility of product;
(4) set up the changeover valve of certain altitude size between bellow-type vortex flow sensors and the flux of vortex street pipe; The pipeline high-temperature medium is just measured through behind the changeover valve; High-temperature medium is in this process; Some heat is distributed in the air, so the temperature relative current buret temperature at bellow-type sensor measurement position decreases, thereby has improved the temperature measurement range of the utility model indirectly.
Description of drawings
Fig. 1 is a kind of decomposition texture synoptic diagram of the utility model;
Fig. 2 is that a kind of inner structure of the utility model is resolved synoptic diagram.
Among the figure: 1, flowtube, 11, T type generation body, 12, flowtube sensor mount pad, 131, left whirlpool chamber; 132, right whirlpool chamber, 2, U type bluff body, 3, gasket seal, 4, changeover valve; 41, whirlpool division board, 421, a whirlpool passage, 422, b whirlpool passage, 423, c whirlpool passage; 424, d whirlpool passage, 43, changeover valve sensor mount pad, 5, the bellow-type sensor probe.
Embodiment
Below through specific embodiment, and combine accompanying drawing, the technical scheme of the utility model is further specified.
Embodiment:
The bellow-type vortex shedding flow meter of a kind of pair of measurement pattern (referring to accompanying drawing 1); Comprise the flowtube 1 that produces the whirlpool signal; There is the T type generation body 11 that produces the whirlpool signal flowtube 1 inside and is fixed on the flowtube sensor mount pad 12 on the flowtube 1; The bellow-type vortex shedding flow meter of two measurement patterns also comprises having the changeover valve 4 that two bellow-type sensors 5 can be installed, changeover valve 4 whole Y-shaped structures, and the changeover valve lower end is provided with whirlpool division board 41; There are four whirlpool passages inside; Be respectively a whirlpool passage 421, b whirlpool passage 422, c whirlpool passage 423, d whirlpool passage 424, the changeover valve upper end is provided with two identical sensor mount pads 43, and bellow-type sensor probe 5 is installed; Mount pad is provided with bolt hole; 5 sealings of bellow-type sensor are installed, be provided with U type bluff body 2 around the whirlpool division board 41, the bottom is provided with gasket seal 3; Whirlpool division board 41 is divided into left whirlpool chamber 131 and right whirlpool chamber 132 with the installation room in the flowtube sensor mount pad 12; Changeover valve 4 is fastened on the flowtube sensor mount pad 12 through bolt, and the inner whirlpool passages of changeover valve 4 communicate with whirlpool chamber respectively, a whirlpool passage 421, b whirlpool passage 422 and c whirlpool passage 423, d whirlpool passage 424 certain distance that on axis direction, staggers in twos; A whirlpool passage 421, c whirlpool passage 423 and left whirlpool chamber 131 conductings; B whirlpool passage 422, d whirlpool passage 424 and right whirlpool chamber 132 conductings, the sensor installation room in the two sensors mount pad on the changeover valve just receives the both sides whirlpool signal that is produced by T type generation body 11 simultaneously respectively like this, and the two bellow-type sensor probes 5 that are installed on the changeover valve sensor mount pad 43 are provided with U type bluff body 2 and gasket seal 3 equally.
When present embodiment uses; When the generation body in the fluid process flowtube; Fluid will alternately separate in the both sides in the downstream that the body fluoran stream surface takes place and discharges the vortex that two strings are alternately arranged regularly; The pressure pulse that is caused by vortex inner separation recycling gets into respectively in the bellow-type sensor installation room of the left and right sides through changeover valve; Pressure pulse makes the sensitive element of two bellow-type sensors produce change in electrical charge, and converts it to electric impulse signal, and what in this process, have no stops the variation that influences pressure pulse.Obtain this electric impulse signal and receive calculating, promptly be convertible into flow signal and exported respectively through converter.Generally speaking, the data of two bellow-type sensor transmissions are basic identical, reached the requirement of redundancy backup; In case when the data of two bellow-type sensor transmissions occurring and having, can judge that promptly present embodiment breaks down, can remind the user to change or repair than big difference.
Above-described embodiment is a kind of preferable scheme of the utility model, is not the utility model is done any pro forma restriction, under the prerequisite that does not exceed the technical scheme that claim puts down in writing, also has other variant and remodeling.
Claims (8)
1. the bellow-type vortex shedding flow meter of two measurement patterns; Comprise the flowtube that produces the whirlpool signal; Be fixedly connected with flowtube sensor mount pad on the flowtube; Be installed in the changeover valve on the flowtube sensor mount pad, be installed in bellow-type sensor and converter assembly on the changeover valve, it is characterized in that: changeover valve is installed on the flowtube sensor mount pad through the mode that flexibly connects; Also have two bellow-type sensor mount pads on the changeover valve; The sensor mount pad is provided with two bellow-type sensor installation rooms, and a bellow-type sensor is installed in the bellow-type sensor installation room, and the dimensional structure of bellow-type sensor mount pad is identical with flowtube sensor mount pad.
2. the bellow-type vortex shedding flow meter of pair measurement pattern according to claim 1; It is characterized in that: described changeover valve comprises changeover valve holder, two bellow-type sensor mount pads and inner split channel; Described changeover valve integral body is Y-shaped, and described changeover valve holder and two bellow-type sensor mount pads are integral structure.
3. the bellow-type vortex shedding flow meter of pair measurement pattern according to claim 2; It is characterized in that: described changeover valve holder comprises a whirlpool division board; Whirlpool division board and changeover valve one or split design, the contour structure size of whirlpool division board is identical with the contour structure size of bellow-type sensor.
4. the bellow-type vortex shedding flow meter of pair measurement pattern according to claim 3; It is characterized in that: described flowtube is a bellow-type sensor stream buret; Bellow-type sensor stream buret set inside has T type generation body; Be provided with two open slots in the flowtube sensor mount pad, two open slots communicate with generation body both sides respectively.
5. the bellow-type vortex shedding flow meter of pair measurement pattern according to claim 4; It is characterized in that: described whirlpool division board is installed and is inserted in the flowtube sensor mount pad; Flowtube sensor mount pad is separated to form left whirlpool chamber and right whirlpool chamber; Said whirlpool division board is arranged with U type bluff body outward, and its structure is identical with the bluff body of bellow-type sensor, fits in the base of U type bluff body and the base of whirlpool division board.
6. the bellow-type vortex shedding flow meter of pair measurement pattern according to claim 5; It is characterized in that: the inner split channel of described changeover valve comprises a whirlpool passage, b whirlpool passage, c whirlpool passage, d whirlpool passage; A whirlpool passage, b whirlpool passage, c whirlpool passage, d whirlpool passage distribute on axis direction in twos; A whirlpool passage, b whirlpool passage and left whirlpool chamber conducting, c whirlpool passage, d whirlpool passage and right whirlpool chamber conducting.
7. the bellow-type vortex shedding flow meter of pair measurement pattern according to claim 6 is characterized in that: the structure of the bellow-type sensor mount pad on the said changeover valve is identical with the structure of flowtube sensor mount pad.
8. the bellow-type vortex shedding flow meter of pair measurement pattern according to claim 7; It is characterized in that: between changeover valve holder and the flowtube sensor mount pad high-temperature sealing material is set, also is provided with high-temperature sealing material between bellow-type sensor and the bellow-type sensor mount pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201804745U CN202547699U (en) | 2012-04-26 | 2012-04-26 | Dual-measuring mode diaphragm capsule type vortex shedding flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201804745U CN202547699U (en) | 2012-04-26 | 2012-04-26 | Dual-measuring mode diaphragm capsule type vortex shedding flowmeter |
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| Publication Number | Publication Date |
|---|---|
| CN202547699U true CN202547699U (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201804745U Expired - Fee Related CN202547699U (en) | 2012-04-26 | 2012-04-26 | Dual-measuring mode diaphragm capsule type vortex shedding flowmeter |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061973A (en) * | 2013-03-18 | 2014-09-24 | 北京堀场汇博隆精密仪器有限公司 | Flowmeter |
| CN106248154A (en) * | 2016-08-26 | 2016-12-21 | 江苏伟屹电子有限公司 | A kind of redundancy structure vortex-shedding meter |
-
2012
- 2012-04-26 CN CN2012201804745U patent/CN202547699U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061973A (en) * | 2013-03-18 | 2014-09-24 | 北京堀场汇博隆精密仪器有限公司 | Flowmeter |
| CN104061973B (en) * | 2013-03-18 | 2017-07-25 | 北京堀场汇博隆精密仪器有限公司 | Flowmeter |
| CN106248154A (en) * | 2016-08-26 | 2016-12-21 | 江苏伟屹电子有限公司 | A kind of redundancy structure vortex-shedding meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20170426 |