CN214843001U - A monitoring strainometer for on platform - Google Patents
A monitoring strainometer for on platform Download PDFInfo
- Publication number
- CN214843001U CN214843001U CN202121122441.0U CN202121122441U CN214843001U CN 214843001 U CN214843001 U CN 214843001U CN 202121122441 U CN202121122441 U CN 202121122441U CN 214843001 U CN214843001 U CN 214843001U
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- strain gauge
- square
- base
- head end
- hole
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Abstract
A monitoring strain gauge for use on an offshore platform. The device comprises a head end, a tail end and a rectangular entity connected between the head end and the tail end, wherein a resistance strain gauge is attached to the rectangular entity; the bottom of the head end is provided with a square groove, and a binding post is arranged in the groove and is used for connecting a connecting cable of the resistance strain gauge led out from the first horizontal through hole; a group of square bosses are respectively distributed at the bottoms of the head end and the tail end, the number of each group of square bosses is 2, and a through hole with a straight notch is formed between the two square bosses of each group; a strain gauge protection cover is sleeved outside the rectangular solid; the square boss is matched with the groove in size, and the square boss can be just buckled in the base; the fixing screw rod is vertically connected to the base, the locking thread is formed in the top end of the fixing screw rod, the fixing screw rod is used for penetrating through the through hole of the straight notch, and the bottom of the base is used for being welded to a pile leg of the marine platform jacket. The strain gauge is not easy to fall off when in work, and the monitoring stability is improved.
Description
Technical Field
The utility model relates to a strain measurement device for on platform, the monitoring of large-scale structures such as mainly used platform, bridge, derrick.
Background
Strain gauges are based on a type of sensor that measures the strain generated by a forced deformation of an object. A resistance strain gauge is the most commonly used sensing element, which is a sensing element that can convert a change in strain on a mechanical member into a change in resistance. Common surface strain gauge in the market is mostly vibrating wire formula surface strain gauge, and vibrating wire formula surface strain gauge wide application is measured in various steel construction or concrete structure surface strain in engineering fields such as bridge, building, railway, traffic, water and electricity, dam, and to marine jacket platform, above-mentioned structure is more abominable compared to its operating mode, and is tubular structure, so current surface strain gauge is not applicable to and places monitoring strain on the platform.
Disclosure of Invention
In order to solve the technical problem who mentions among the background art, the utility model provides a monitoring strainometer is applicable to the jacket structure, can effectively be applied to on the platform.
The technical scheme of the invention is as follows: a strain gauge for monitoring use on an ocean platform comprising a head end and a tail end, the unique feature being:
a rectangular solid body 18 is connected between the head end 1 and the tail end, semicircular grooves 17 are formed in four diagonal ends of the rectangular solid body 18, and a resistance strain gauge 16 is attached to the rectangular solid body 18.
The bottom of the head end 1 is provided with a square groove 12, a binding post 19 is arranged in the square groove 12 and is used for connecting a connecting cable of a resistance strain gauge 16 led out from a first horizontal through hole 13, and an external cable 2 led out of the strain gauge by the binding post 19 is led out through a second horizontal through hole 11.
A group of square bosses 14 are respectively distributed at the bottoms of the head end 1 and the tail end, the number of each group of square bosses 14 is 2, and a through hole 15 with a straight notch is formed between the two square bosses of each group.
The rectangular solid body 18 is sleeved with the strain gauge protection cover 3.
The strain gauge also comprises a base 4, wherein a groove is formed in the base 4, the size of the groove is matched with that of the square boss 14, and the square boss 14 can be just buckled in the base 4; the base 4 is vertically connected with a fixing screw rod 41, the top end of the fixing screw rod 41 is provided with a locking thread, the fixing screw rod 41 is used for penetrating through the straight notch through hole 15, and the bottom of the base 4 is used for being welded on a pile leg of the offshore platform jacket.
The invention has the following beneficial effects: firstly, this kind of monitoring strainometer designs to the characteristics of platform, and the installation base angularly adjustable, it is firm to weld, can ensure the accuracy of monitoring result. And secondly, the sensitivity of the strain gauge is obviously improved and the working error is reduced by the structural improvement of the strain gauge body. Compared with the existing strain gauge, the monitoring strain gauge has the advantages of good adaptability, high sensitivity and strong capability of resisting severe environment on an ocean jacket platform.
Description of the drawings:
fig. 1 is a schematic front view of the strain gauge of the present invention;
FIG. 2 is a schematic view of the bottom surface of the strain gauge of the present invention;
FIG. 3 is a schematic view of the bottom surface of the strain gauge body according to the present invention;
fig. 4 is a front schematic view of the strain gauge body of the present invention;
fig. 5 is a schematic view of a protective cover of a strain gauge resistance strain gauge of the present invention;
fig. 6 is a schematic view of the structure of the strain gauge base of the present invention;
FIG. 1-head end; 11-a second horizontal through hole; 12-a square groove; 13-a first horizontal through hole; 14-square boss; 15-straight notch through hole; 16-resistance strain gauge; 17-a semicircular groove; 18-a rectangular solid; 19-a terminal post; 2-external cable; 3-strain gage protection covers; 4-a base mechanism; and 41-fixation.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
the utility model provides a monitoring strainometer for on platform, includes head end and tail end, its unique is in:
a rectangular solid body 18 is connected between the head end 1 and the tail end, semicircular grooves 17 are formed in four diagonal ends of the rectangular solid body 18, and a resistance strain gauge 16 is attached to the rectangular solid body 18.
The bottom of the head end 1 is provided with a square groove 12, a binding post 19 is arranged in the square groove 12 and is used for connecting a connecting cable of a resistance strain gauge 16 led out from a first horizontal through hole 13, and an external cable 2 led out of the strain gauge by the binding post 19 is led out through a second horizontal through hole 11.
A group of square bosses 14 are respectively distributed at the bottoms of the head end 1 and the tail end, the number of each group of square bosses 14 is 2, and a through hole 15 with a straight notch is formed between the two square bosses of each group.
The rectangular solid body 18 is sleeved with the strain gauge protection cover 3.
The strain gauge also comprises a base 4, wherein a groove is formed in the base 4, the size of the groove is matched with that of the square boss 14, and the square boss 14 can be just buckled in the base 4; the base 4 is vertically connected with a fixing screw rod 41, the top end of the fixing screw rod 41 is provided with a locking thread, the fixing screw rod 41 is used for penetrating through the straight notch through hole 15, and the bottom of the base 4 is used for being welded on a pile leg of the offshore platform jacket.
The head end 1 and the tail end of the monitoring strain gauge and the rectangular solid body 18 are machined integrally, and no welding point exists. The temperature self-compensating resistance strain gauge can be mounted by glue.
The head end 1 and the tail end of the monitoring strain gauge are symmetrically provided with square bosses which are connected with a base matched with the strain gauge during installation and used for setting buffering.
When the strain gauge is installed, firstly, the weakest position of the structure of the ocean platform when the ocean platform is subjected to loads such as wind, waves and the like, namely a stress concentration position is determined through finite element simulation software, the section measured by strain monitoring is a circular section, strain gauges are installed on the section at intervals of 90 degrees, the base and the stress concentration position are polished completely, two groups of base mechanisms 4 are fixed on a pile leg of a guide pipe frame at a certain linear distance through welding respectively, the strain gauges are placed above the two groups of bases, square bosses on the strain gauges can help the strain gauges to have a flat and stable working surface, the square bosses penetrate through holes 15 of straight notches under the guiding action of screw rods 41, nuts are screwed, and at the moment, the installation of the strain gauges is completed.
When the ocean platform works normally, the ocean platform can be comprehensively influenced by loads such as wind, waves and currents, the platform cannot be prevented from deforming, and the platform can be ensured to be safely and stably operated within a set threshold value range by certain monitoring means such as strain monitoring.
The strain gauge is synchronous with the deformation of the platform when working, the resistance strain gauge can have voltage change when deforming, the acquisition instrument collects constantly changing voltage values, the constantly changing voltage values are multiplied by an amplification factor calibrated by the resistance strain gauge to obtain strain values, the strain monitoring work is completed, data are packaged, and the post-processing is carried out.
The utility model discloses the strainometer is facing a series of problems such as high humidity, sea water corrosion at marine environment during operation, compares in other strainometers, the utility model discloses the strainometer is difficult for droing at the during operation foil gage, and ocean adverse circumstances is less to its influence, has effectually improved its working life, has improved the stability of monitoring.
Claims (1)
1. A monitoring strain gauge for an ocean platform comprises a head end (1) and a tail end, and is characterized in that:
a rectangular entity (18) is connected between the head end (1) and the tail end, semicircular grooves (17) are formed in four diagonal ends of the rectangular entity (18), and a resistance strain gauge (16) is attached to the rectangular entity (18);
a square groove (12) is formed in the bottom of the head end (1), a binding post (19) is arranged in the square groove (12) and is used for connecting a connecting cable of a resistance strain gauge (16) led out from a first horizontal through hole (13), and an external cable (2) led out of the strain gauge by the binding post (19) is led out through a second horizontal through hole (11);
a group of square bosses (14) are respectively distributed at the bottom of the head end (1) and the tail end, the number of each group of square bosses (14) is 2, and a through hole (15) with a straight notch is arranged between two square bosses of each group;
a strain gauge protective cover (3) is sleeved outside the rectangular solid body (18);
the strain gauge also comprises a base (4), wherein a groove is formed in the base (4), the size of the groove is matched with that of the square boss (14), and the square boss (14) can be just buckled in the base (4); the fixing screw rod (41) is vertically connected to the base (4), the locking threads are formed in the top end of the fixing screw rod (41), the fixing screw rod (41) is used for penetrating through the straight notch through hole (15), and the bottom of the base (4) is used for being welded to a pile leg of the offshore platform jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121122441.0U CN214843001U (en) | 2021-05-25 | 2021-05-25 | A monitoring strainometer for on platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121122441.0U CN214843001U (en) | 2021-05-25 | 2021-05-25 | A monitoring strainometer for on platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214843001U true CN214843001U (en) | 2021-11-23 |
Family
ID=78776405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121122441.0U Expired - Fee Related CN214843001U (en) | 2021-05-25 | 2021-05-25 | A monitoring strainometer for on platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214843001U (en) |
-
2021
- 2021-05-25 CN CN202121122441.0U patent/CN214843001U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |