CN105403276A - Plug-in type flow meter double-stage overload protection structure - Google Patents
Plug-in type flow meter double-stage overload protection structure Download PDFInfo
- Publication number
- CN105403276A CN105403276A CN201510908767.9A CN201510908767A CN105403276A CN 105403276 A CN105403276 A CN 105403276A CN 201510908767 A CN201510908767 A CN 201510908767A CN 105403276 A CN105403276 A CN 105403276A
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- China
- Prior art keywords
- overload protection
- sensor
- length
- protection pipe
- protection structure
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Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000010008 shearing Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The invention provides a plug-in type flow meter double-stage overload protection structure comprising an air chamber seat and a sensor disposed in the air chamber seat. The lower end of the air chamber is connected with a first overload protection pipe protecting a target rod on the sensor; the length of the first overload protection pipe is longer than the length of the target rod on the sensor; the periphery of the air chamber seat is provided with a flange base seat and a flange short joint locked to the flange base seat; a second overload protection pipe protecting a target sheet on the sensor is disposed in the flange short joint; and the length of the second overload protection pipe is longer than the length of the target sheet on the sensor. A double-layer protection structure is employed; the first overload protection pipe protects the sensor and the second overload protection pipe protects the target sheet; when the target sheet is pushed by fluid, shearing force not thrusting force is applied to the sensor; with the double-layer protection structure, small shearing force is applied to the sensor; and deformation damage to the target sheet due to inertial impact force or excessive full range can be prevented.
Description
Technical field
The present invention relates to flowmeter technology field, refer to a kind of inserting-type flowmeter twin-stage overcurrent protection structure especially.
Background technology
At present, Large Diameter Pipeline fluid adopts inserting-type flowmeter to detect when measuring, inserting-type flowmeter has overload protection usually, and its overload protection all adopts single-mode.The arm of force of inserting-type flowmeter target bar or target sheet is all long, and (target plate, stressed member) to stretch into measuring tube inwall just long.Its deflection is thereupon just larger, is more easily subject to the inertia impact of fluid and causes target sheet (target plate, stressed member) to be out of shape, and because target sheet and sensor adopt gun iron link, therefore sensor deflection also can be caused to increase simultaneously.
For above-mentioned reasons, sensor is easily subject to shearing force impact and is destroyed, and a single overload protection is too weak.Inserting-type flowmeter is generally all used in Large Diameter Pipeline fluid measurement process, once occur that sensor or target sheet (target plate, stressed member) damage, when not needing online dismounting flowmeter, if need to safeguard, need medium in first emptying pipe then just can safeguard, bring very inconvenience to maintenance, too increase maintenance cost simultaneously.
Summary of the invention
The present invention proposes a kind of inserting-type flowmeter twin-stage overcurrent protection structure, solves inserting-type flowmeter and adopts single operator guards to make the technical matters that flowmeter protection ratio is weaker and maintenance is inconvenient, maintenance cost is high.
Technical scheme of the present invention is achieved in that a kind of inserting-type flowmeter twin-stage overcurrent protection structure, comprise air chamber base and be placed in the sensor in air chamber base, the lower end of described air chamber base is connected with the first overload protection pipe for the protection of the target bar on sensor, and the length of described first overload protection pipe is greater than the length of the target bar on sensor; The periphery of described air chamber base is provided with flange pedestal and the flange spool of the locking connection that cooperatively interacts, and is provided with the second overload protection pipe for the protection of the target sheet on sensor in described flange spool; The length of described second overload protection pipe is greater than the length of the target sheet on sensor.
Wherein, described second overload protection pipe comprises two symmetrically arranged linking arms and annulus integrated with it.
Further, described annulus is arranged with two groups of secured adjusted holes.
Particularly, described second overload protection pipe is connected by attaching nut and set nut with flange spool.
Further, described flange pedestal is provided with pressure ring.
Further, the length of described first overload protection pipe is greater than target pole length 2-4mm.
Further, the length of described second overload protection pipe is greater than target pole length 3-6mm.
Further, the length of described annulus is 1/3 of the second overload protection pipe overall length.
Compared with prior art; beneficial effect of the present invention is: design the first overload protection pipe, the second overload protection pipe; adopt two-stage overload protection; namely protect target bar and target sheet (target plate, stressed member) distortion also ensure that stability, the reliability of sensor simultaneously, reach to reduce with this and safeguard.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the second protection tube in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, Fig. 2, a kind of inserting-type flowmeter twin-stage overcurrent protection structure, comprise air chamber base 2 and be placed in the sensor 1 in air chamber base 2, the lower end of described air chamber base 2 is connected with the first overload protection pipe 8 for the protection of the target bar on sensor 1, first overload protection pipe 8 is round steel pipe, one end of this round steel pipe is processed with external thread, and described first overload protection pipe 8 is connected with the screw-internal thread fit in air chamber base 2 by external thread; The length of described first overload protection pipe 8 is greater than the length 2-4mm of the target bar on sensor 1; When carrying out fluid media (medium) and measuring, with the displacement of this limit target bar, thus reach protection sensor 1 load of bearing in the scope that it carries, thus form first order protection.
The periphery of described air chamber base 2 is provided with flange pedestal 4 and the flange spool 5 of the locking connection that cooperatively interacts, and is provided with the second overload protection pipe 11 for the protection of the target sheet 6 on sensor 1 in described flange spool 5; Described second overload protection pipe 11 comprises two symmetrically arranged linking arm 11-1 and annulus 11-2 integrated with it; second overload protection pipe 11 is connected by attaching nut 9 and set nut 10 with flange spool 5; the external thread of the second protection tube is arranged on the outer wall of linking arm 11-1, and the length of described second overload protection pipe 11 is greater than the length 3-6mm of the target sheet 6 on sensor 1.Second overload protection pipe 11 is that two planes of symmetry are cut away 60%-80% by benchmark with center line; form two linking arm 11-1; wherein Cutting Length is total length 2/3; the annulus 11-2 of a 5-15mm is formed in lower end; its annulus 11-2 plane of symmetry is provided with two groups of overload bolt secured adjusted hole 11-3, in order to regulate target sheet 6 (target plate, stressed member) displacement.The size of its variable displacement amount is with reference to the full scale about 30% measured by this flowmeter.Reach protection target sheet 6 (target plate, stressed member) with this and to ensure that in its scope allowed sensor 1 is not subject to that its shearing force is excessive causes damage.
Further, described flange pedestal 4 is provided with pressure ring 3, pressure ring 3 is locked by clamping screw and flange pedestal 4, again strengthens the connection of air chamber base 2 and flange pedestal 4.Described target bar is connected by fastening screw nut 7 with sensor 1.
The present invention adopts double-layered protecting structure; first overload protection pipe 8 protects sensor 1, second overload protection pipe 11 to protect target sheet 6; when fluid forces target sheet 6; what sensor 1 was subject to is not thrust; but shearing force; shearing force suffered by sensor 1 reduces to adopt two-layer protection ensure that, ensures the deformed damaged of target sheet 6 also not because causing when inertial impact force or super full scale simultaneously.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. an inserting-type flowmeter twin-stage overcurrent protection structure, comprise air chamber base and be placed in the sensor in air chamber base, it is characterized in that: the lower end of described air chamber base is connected with the first overload protection pipe for the protection of the target bar on sensor, the length of described first overload protection pipe is greater than the length of the target bar on sensor;
The periphery of described air chamber base is provided with flange pedestal and the flange spool of the locking connection that cooperatively interacts, and is provided with the second overload protection pipe for the protection of the target sheet on sensor in described flange spool; The length of described second overload protection pipe is greater than the length of the target sheet on sensor.
2. inserting-type flowmeter twin-stage overcurrent protection structure according to claim 1, is characterized in that: described second overload protection pipe comprises two symmetrically arranged linking arms and annulus integrated with it.
3. inserting-type flowmeter twin-stage overcurrent protection structure according to claim 2, is characterized in that: described annulus is arranged with two groups of secured adjusted holes.
4. the inserting-type flowmeter twin-stage overcurrent protection structure according to claim 1 or 2 or 3, is characterized in that: described second overload protection pipe is connected by attaching nut and set nut with flange spool.
5. inserting-type flowmeter twin-stage overcurrent protection structure according to claim 1, is characterized in that: described flange pedestal is provided with pressure ring.
6. inserting-type flowmeter twin-stage overcurrent protection structure according to claim 1, is characterized in that: the length of described first overload protection pipe is greater than target pole length 2-4mm.
7. inserting-type flowmeter twin-stage overcurrent protection structure according to claim 1, is characterized in that: the length of described second overload protection pipe is greater than target pole length 3-6mm.
8. the inserting-type flowmeter twin-stage overcurrent protection structure according to Claims 2 or 3, is characterized in that: the length of described annulus is 1/3 of the second overload protection pipe overall length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510908767.9A CN105403276A (en) | 2015-12-08 | 2015-12-08 | Plug-in type flow meter double-stage overload protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510908767.9A CN105403276A (en) | 2015-12-08 | 2015-12-08 | Plug-in type flow meter double-stage overload protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105403276A true CN105403276A (en) | 2016-03-16 |
Family
ID=55468904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510908767.9A Pending CN105403276A (en) | 2015-12-08 | 2015-12-08 | Plug-in type flow meter double-stage overload protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105403276A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2795821Y (en) * | 2005-05-13 | 2006-07-12 | 吉林华衡传感器有限公司 | Flow sensor |
| CN201166570Y (en) * | 2007-08-27 | 2008-12-17 | 泉州恒劲科博测控技术有限公司 | Panseal induction type flow gauge for impulse force |
| CN101603846A (en) * | 2009-07-21 | 2009-12-16 | 丹东耐能仪表电器有限公司 | Target type flowmeter of non-contact type displacement sensor |
| DE102013016414A1 (en) * | 2013-04-12 | 2014-10-16 | Robert Riedlberger | Method for installing a control linkage for media lines under asphalt coverings |
| CN205228568U (en) * | 2015-12-08 | 2016-05-11 | 重庆联大仪表有限公司 | Bayonet flowmeter doublestage overload protection structure |
-
2015
- 2015-12-08 CN CN201510908767.9A patent/CN105403276A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2795821Y (en) * | 2005-05-13 | 2006-07-12 | 吉林华衡传感器有限公司 | Flow sensor |
| CN201166570Y (en) * | 2007-08-27 | 2008-12-17 | 泉州恒劲科博测控技术有限公司 | Panseal induction type flow gauge for impulse force |
| CN101603846A (en) * | 2009-07-21 | 2009-12-16 | 丹东耐能仪表电器有限公司 | Target type flowmeter of non-contact type displacement sensor |
| DE102013016414A1 (en) * | 2013-04-12 | 2014-10-16 | Robert Riedlberger | Method for installing a control linkage for media lines under asphalt coverings |
| CN205228568U (en) * | 2015-12-08 | 2016-05-11 | 重庆联大仪表有限公司 | Bayonet flowmeter doublestage overload protection structure |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160316 |