CN202339237U - Elastomer of load sensor for oil field - Google Patents
Elastomer of load sensor for oil field Download PDFInfo
- Publication number
- CN202339237U CN202339237U CN 201120513060 CN201120513060U CN202339237U CN 202339237 U CN202339237 U CN 202339237U CN 201120513060 CN201120513060 CN 201120513060 CN 201120513060 U CN201120513060 U CN 201120513060U CN 202339237 U CN202339237 U CN 202339237U
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- oil field
- strain beams
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Abstract
The utility model discloses an elastomer of a load sensor for an oil field. The elastomer comprises two stress points, two strain beams (2) and a support seat (3), wherein the strain beams (2) and the support seat (3) are integrated into a whole, two strain beams (2) are symmetrically arranged along a stress axis in parallel and forms a parallel dual-cantilever beam structure with the support seat (3) by adopting a shearing type structure; and two stress points (1) are respectively arranged on the front ends of the upper surfaces of two strain beams (2). By integrating the strain beams and the support seat, the whole structure of the elastomer provided by the utility model is simpler and more compact, and the volume is reduced by 30%; meanwhile, two strain beams are arranged in parallel so that the stress of a sensor is more uniform, and the shearing type strain beam enables the welding and sealing to be much easier.
Description
Technical field
The utility model belongs to the force cell technical field, particularly a kind of sensor element that is applicable to oil field oil recovery airborne measurements load.
Background technology
Load transducer is to be used for the oil field oil production machine to show that the worker schemes one of main sensors of unit.The elastic body that the present sensor of measuring load generally uses has two kinds of structures: O type structure and U type structure, its citation form is pole structure.
Wherein, The whole pole structure that adopts of O type elastomer structure; Can welded seal, barrier propterty is good, but this version elastic body install and unloading process in need remove sucker rod from poliched rod eye; Then elastomer sleeve is installed poliched rod eye again on sucker rod, the installation of sensor and dismounting are inconvenient especially.
Another kind of U type elastomer structure adopts split modular structure as shown in Figure 1, and wherein, A is that stress point, B are that elastic body, C are supporting seat.This kind elastic body adopts U type open type structure, is contained between the last lower platen of poliched rod eye installation, convenient disassembly during installation.But this kind sensor adopts the queen post structure, and two column type elastomers pass through screw retention on supporting seat, and there is following major defect in this structural elasticity body: fabricated structure, and loosening easily; O type circle and glue are leaned in sealing, and poorly sealed situation appears in easy ageing.
Owing to have above deficiency, at present, use these two kinds of elastomeric sensor accuracies about 0.3%FS.
The utility model content
The technology of the utility model is dealt with problems: overcome the deficiency of prior art, the elastic body of the high oil field of a kind of simple in structure, good airproof performance, measuring accuracy with load transducer is provided.
The technical solution of the utility model: a kind of oil field is with the elastic body of load transducer, comprises two stress points, two strain beams and supporting seat; Strain beam and supporting seat adopt integrated design; Said two strain beams divide layout along stressed axis symmetrical, parallel, adopt shearing structure, form parallel double cantilever beam structure with supporting seat; Said two stress points lay respectively at the front end of two strain beam upper surfaces.
The outside of said two strain beams has strain bore.
Diameter range 18～the 25mm of said strain bore, dark 5～8mm.
The utility model beneficial effect compared with prior art is:
1. the utility model adopts the integrated design of strain beam and supporting seat, makes total simpler, compact, and elastomeric volume has reduced 30%.
2. two of the utility model strain beam parallel arrangement make the stressed more even of sensor.Simultaneously, the form of shearing strain beam make welding, the sealing easier.
3. the utility model strain beam adopts shearing structure, simultaneously has strain bore in the outside of two strain beams, and the technical indicators such as linearity, hysteresis, repeatability of sensor are greatly improved, and all is superior to 0.1%FS.
Description of drawings
Fig. 1 is a U type sensor synoptic diagram;
Fig. 2 is the synoptic diagram of the utility model;
Fig. 3 pastes the synoptic diagram behind the strainometer for the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 2, a kind of oil field of the utility model is with the elastic body of load transducer, comprises two stress points 1, two strain beams 2 and supporting seats 3; Strain beam 2 adopts integrated design with supporting seat 3.Two strain beams 2 distribute along stressed axis symmetrical, parallel, adopt shearing structure, form parallel double cantilever beam structure with supporting seat 3, and two stress points 1 lay respectively at the front end of two strain beam 2 upper surfaces.
In the present embodiment, two stress points 1 are the arc-shaped protrusions of strain beam 2 upper surface front ends.
The strain beam 2 of the utility model adopts superior alloy steel to be processed into the shearing structure of parallel girder with supporting seat 3, and through bakingout process, intensity is high, stable performance.
The outside of two strain beams 2 has strain bore 21, is used to paste foil gauge.The size of strain bore 21 has determined the sensitivity (sensor loads back output signal magnitude) of sensor.In the present embodiment, the sensitivity of sensor is 1～2mV/V.
If the diameter of strain bore 21 is certain, can change the range ability of sensor through the degree of depth that changes strain bore 21.
In the utility model, the diameter range 18～25mm of strain bore 21, dark 5～8mm.In the present embodiment, the diameter 20mm of strain bore 21, dark 8mm.
Four strainometers 4 stick on respectively in the strain bore 21 in two strain beam 2 outsides, experience normal strain for two, experience negative strain for two, and four strainometers 4 are formed resistance bridge.Through becoming the sensor that is used for pressure test after temperature compensation, zero compensation, welded seal, the calibrating.When stress point 1 receives when pressing to load, strain beam 2 deforms, and the resistance value that sticks on four strainometers 4 in the strain bore 21 simultaneously changes; At this moment; The resistance bridge out of trim, the millivolt signal of output is directly proportional with the magnitude of load that is applied to stress point 1 place, thereby records the size of load; Through demarcating and data computation, the final precision of sensor is superior to 0.1%FS.
In addition, use the elastomeric sensor anti-bias load of the utility model ability strong, its principle is: when sensor received unbalance loading load, the arm resistance of forming resistance bridge changed simultaneously, thereby the output that guarantees electric bridge is constant.
Certainly, under the situation that does not change its function, the equivalent transformation that carries out or substitute also falls into the protection domain of the utility model to each building block of the utility model, position relation and connected mode.
The undocumented technology of the utility model instructions belongs to techniques well known.
Claims (3)
1. an oil field is characterized in that: comprise two stress points (1), two strain beams (2) and supporting seat (3) with the elastic body of load transducer; Strain beam (2) adopts integrated design with supporting seat (3); Said two strain beams (2) divide layout along stressed axis symmetrical, parallel, adopt shearing structure, form parallel double cantilever beam structure with supporting seat (3); Said two stress points (1) lay respectively at the front end of two strain beams (2) upper surface.
2. according to a kind of oil field of claim 1 elastic body with load transducer, it is characterized in that: the outside of said two strain beams (2) has strain bore (21).
3. according to a kind of oil field of claim 2 elastic body, it is characterized in that: the diameter range 18～25mm of said strain bore (21), dark 5～8mm with load transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120513060 CN202339237U (en) | 2011-12-08 | 2011-12-08 | Elastomer of load sensor for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120513060 CN202339237U (en) | 2011-12-08 | 2011-12-08 | Elastomer of load sensor for oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202339237U true CN202339237U (en) | 2012-07-18 |
Family
ID=46487928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120513060 Expired - Fee Related CN202339237U (en) | 2011-12-08 | 2011-12-08 | Elastomer of load sensor for oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202339237U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328499A (en) * | 2017-08-11 | 2017-11-07 | 安徽天光传感器有限公司 | A kind of hand-held bayonet socket sensor |
| CN107402100A (en) * | 2017-07-20 | 2017-11-28 | 沈阳农业大学 | A kind of force cell |
| CN108593059A (en) * | 2018-05-30 | 2018-09-28 | 张阿宁 | Multi-beam structure elastic element |
-
2011
- 2011-12-08 CN CN 201120513060 patent/CN202339237U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402100A (en) * | 2017-07-20 | 2017-11-28 | 沈阳农业大学 | A kind of force cell |
| CN107402100B (en) * | 2017-07-20 | 2024-03-12 | 沈阳农业大学 | Force transducer |
| CN107328499A (en) * | 2017-08-11 | 2017-11-07 | 安徽天光传感器有限公司 | A kind of hand-held bayonet socket sensor |
| CN108593059A (en) * | 2018-05-30 | 2018-09-28 | 张阿宁 | Multi-beam structure elastic element |
| CN108593059B (en) * | 2018-05-30 | 2019-12-31 | 张阿宁 | Multi-beam structure elastic element |
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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 |
Granted publication date: 20120718 Termination date: 20141208 |
|
| EXPY | Termination of patent right or utility model |