CN201514198U - Seal structure suitable for differential electric resistance strain gage and joint gage - Google Patents
Seal structure suitable for differential electric resistance strain gage and joint gage Download PDFInfo
- Publication number
- CN201514198U CN201514198U CN2009202354791U CN200920235479U CN201514198U CN 201514198 U CN201514198 U CN 201514198U CN 2009202354791 U CN2009202354791 U CN 2009202354791U CN 200920235479 U CN200920235479 U CN 200920235479U CN 201514198 U CN201514198 U CN 201514198U
- Authority
- CN
- China
- Prior art keywords
- seal
- ring
- seal ring
- gage
- ring seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010276 construction Methods 0.000 claims description 8
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 8
- 229920006335 epoxy glue Polymers 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Images
Abstract
The utility model relates to a seal structure suitable for differential electric resistance strain gage and joint gage, wherein the improvement is that the rear end of the outer screw thread of a wire holder is provided with a ring groove along the radical direction, a rubber seal ring is sleeved in the ring groove, the outer periphery of the seal ring is partially projected outside the outer side of the ring groove, the front end of the inner screw thread of a connection sleeve barrel is provided with a counter hole which is matched with the seal ring, and the inner diameter of the counter hole is smaller than the outer diameter of the seal ring. The seal ring is compressed after being assembled, and the seal ring is closely attached with the wire holder and the wiring sleeve barrel, thereby playing the seal water-proof functions. The seal structure has simple structure and convenient and fast assembly, effectively improves seal performance, shortens production cycle, and can avoid errors caused by human operation. The seal mechanism has stable seal performance, effectively improves pressure-resistance property, and the seal ring has no pollution to assembly and use environment.
Description
Technical field
The utility model relates to the differential resistance type strain of monitoring dam dam structure stress and change in displacement and takes into account crack gauge, relates in particular to the improvement that the crack gauge hermetically-sealed construction is taken into account in the differential resistance type strain.
Background technology
As shown in Figure 1, differential resistance type strain is at present taken into account crack gauge and is formed by back joint chair (part 1), corrugated tube (part 2), sensing unit (part 3), junction block (part 4) and wiring sleeve (part 5), back joint chair and junction block adopt the form and the corrugated tube of scolding tin to be connected and sealed, cable and wiring sleeve adopt the rubber taper ring to seal, and junction block adopts with the wiring sleeve and is threaded.Because the differential resistance type strain is taken into account crack gauge and need be embedded in concrete usually and bear and do steady in a long-term the measurement in the works of hydraulic pressure, so junction block and wiring sleeve connection of thread all need it is carried out water-proofing treatment, the water that prevents certain pressure is penetrated into instrument internal by screw thread, original way is to smear epoxy glue at the screw thread place, make glue be filled in the thread pitch place, stop passing through of press water.But there are a lot of defectives in this sealing means: 1. epoxide-resin glue is long set time, reaches maximum intensity and solidifies 24 hours that need, and has seriously prolonged the production cycle of instrument; 2. sealing property instability, the transportation of instrument and bury environment for use underground, there is bigger temperature variation (usable range of national standard for-25-60 ℃) in the capital, when temperature generation acute variation when particularly temperature reduces, the contraction of epoxy glue self makes it can not be with the thread pitch complete filling, when bearing high hydraulic pressure, the water capacity easily infiltrates into instrument internal by the gap and causes instrument damage; 3. epoxy glue allotment proportional control is comparatively difficult, and in order to reach seal request, epoxy glue allotment proportional control is comparatively strict, and the surface of the work processing requirements is higher; 4. the epoxy glue smell is pungent, and the instrument assembly environment is had certain pollution.
Summary of the invention
The purpose of this utility model is: at above existing differential resistance type strain take into account that crack gauge utilizes that epoxy resin seals shortcoming, provide a kind of differential resistance type strain that is applicable to simple in structure, easy to assembly, dependable performance to take into account the hermetically-sealed construction of crack gauge.
In order to reach the above object: the utility model provides a kind of and is applicable to that the differential resistance type strain takes into account the hermetically-sealed construction of crack gauge, the external thread rear end that it is characterized in that junction block is disposed radially a ring recess, be set with rubber seal in this ring recess, the periphery of described O-ring seal protrudes from the ring recess outside, the internal thread front end of wiring sleeve is provided with the counterbore that cooperates with O-ring seal, the internal diameter of this counterbore is less than the external diameter of O-ring seal, greater than the aperture of internal thread.
In order to make the sealing structure adapt to various environmental changes, the material of O-ring seal is selected rubber for use.
The utility model benefit is as follows: effectively shorten the production cycle 1.: original sealing process needs 24 hours, now only need satisfy market rapid-action needs less than 5 minutes; 2. sealing property is stable, withstand voltage properties effectively promotes, the O-ring seal serviceability temperature scope of rubber is wide, the temperature variation of having guaranteed the instrument environment for use is to not influence of sealing property, and rubber ring has anti-oily antiacid alkali, make the scope of application of instrument more extensive, the good sealing effectiveness of rubber ring effectively promotes the watertight performance of instrument simultaneously; 3. assemble simple and conveniently, improved efficiency, the error of having avoided manual operation to bring; 4. O-ring seal does not pollute assembling and environment for use.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is existing original differential resistance type strain gauge structure synoptic diagram.
Fig. 2 is the utility model sealed structural representation.
Embodiment
Present embodiment be applicable to that hermetically-sealed construction that the differential resistance type strain takes into account crack gauge as shown in Figure 2, its improvements are, the external thread rear end of junction block 4 is disposed radially a ring recess 41,41 are set with O-ring seal 6 in this ring recess, the periphery of O-ring seal 6 protrudes from ring recess 41 outsides, the internal thread front end of wiring sleeve 5 is provided with the counterbore 51 that cooperates with O-ring seal 6, and the internal diameter of this counterbore 51 is less than the external diameter of O-ring seal 6, greater than the aperture of internal thread.The xsect of O-ring seal is circular in this example, and the diameter of its xsect is greater than the degree of depth of ring recess.
During assembling, the O RunddichtringO with rubber is installed on the junction block earlier, tightens the wiring sleeve by screw thread again and gets final product.O-ring seal is compressed the back and fits tightly with junction block and wiring sleeve, and effectively waterproof sealing has formed hermetically-sealed construction of the present utility model.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation form, all drop on the protection domain of the utility model requirement.
Claims (2)
1. one kind is applicable to that the differential resistance type strain takes into account the hermetically-sealed construction of crack gauge, the external thread rear end that it is characterized in that junction block is disposed radially a ring recess, be set with rubber seal in this ring recess, the periphery of described O-ring seal protrudes from the ring recess outside, the internal thread front end of wiring sleeve is provided with the counterbore that cooperates with O-ring seal, the internal diameter of counterbore is less than the external diameter of O-ring seal, greater than the aperture of internal thread.
2. according to claim 1ly be applicable to that the differential resistance type strain takes into account the hermetically-sealed construction of crack gauge, the xsect that it is characterized in that described O-ring seal is for circular, and the diameter of its xsect is greater than the degree of depth of ring recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202354791U CN201514198U (en) | 2009-10-10 | 2009-10-10 | Seal structure suitable for differential electric resistance strain gage and joint gage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202354791U CN201514198U (en) | 2009-10-10 | 2009-10-10 | Seal structure suitable for differential electric resistance strain gage and joint gage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201514198U true CN201514198U (en) | 2010-06-23 |
Family
ID=42485610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202354791U Expired - Lifetime CN201514198U (en) | 2009-10-10 | 2009-10-10 | Seal structure suitable for differential electric resistance strain gage and joint gage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201514198U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976347A (en) * | 2015-06-16 | 2015-10-14 | 上海鹰峰电子科技有限公司 | Non-planar type sealing joint assembly |
| CN105091806A (en) * | 2015-08-24 | 2015-11-25 | 南京南瑞集团公司 | High pressure-resistant vibrating wire strain gauge |
| CN108151639A (en) * | 2017-12-18 | 2018-06-12 | 中船重工西安东仪科工集团有限公司 | A kind of pressure-resistant seal assembly inner body accurate displacement measurement device |
| CN112710221A (en) * | 2020-11-10 | 2021-04-27 | 国网电力科学研究院有限公司 | Wide-range differential resistance strain gauge |
| CN114148163A (en) * | 2022-01-18 | 2022-03-08 | 重庆长安汽车股份有限公司 | Oil filler cap assembly with screwing monitoring component and vehicle |
| CN114216431A (en) * | 2021-12-14 | 2022-03-22 | 安徽理工大学 | Waterproof device and waterproof sealing method for wiring of drilling well wall monitoring sensor |
-
2009
- 2009-10-10 CN CN2009202354791U patent/CN201514198U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976347A (en) * | 2015-06-16 | 2015-10-14 | 上海鹰峰电子科技有限公司 | Non-planar type sealing joint assembly |
| CN105091806A (en) * | 2015-08-24 | 2015-11-25 | 南京南瑞集团公司 | High pressure-resistant vibrating wire strain gauge |
| CN105091806B (en) * | 2015-08-24 | 2017-09-15 | 南京南瑞集团公司 | High pressure resistant vibrating string extensometer |
| CN108151639A (en) * | 2017-12-18 | 2018-06-12 | 中船重工西安东仪科工集团有限公司 | A kind of pressure-resistant seal assembly inner body accurate displacement measurement device |
| CN108151639B (en) * | 2017-12-18 | 2023-09-01 | 中船重工西安东仪科工集团有限公司 | Pressure-resistant seal assembly internal part displacement precision measurement device |
| CN112710221A (en) * | 2020-11-10 | 2021-04-27 | 国网电力科学研究院有限公司 | Wide-range differential resistance strain gauge |
| CN114216431A (en) * | 2021-12-14 | 2022-03-22 | 安徽理工大学 | Waterproof device and waterproof sealing method for wiring of drilling well wall monitoring sensor |
| CN114216431B (en) * | 2021-12-14 | 2023-09-29 | 安徽理工大学 | Waterproof device and waterproof sealing method for wiring of well drilling wall monitoring sensor |
| CN114148163A (en) * | 2022-01-18 | 2022-03-08 | 重庆长安汽车股份有限公司 | Oil filler cap assembly with screwing monitoring component and vehicle |
| CN114148163B (en) * | 2022-01-18 | 2023-09-22 | 重庆长安汽车股份有限公司 | Filler cap assembly with tightening monitoring assembly and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID ELECTRIC POWER RESEARCH INSITITUTE NANJ Free format text: FORMER OWNER: NANJING NARI CO., LTD. Effective date: 20130809 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: STATE GRID ELECTRIC POWER RESEARCH INSITITUTE Effective date: 20130809 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 210003 NANJING, JIANGSU PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130809 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: State Grid Electric Power Research Insititute Patentee after: Nanjing Nari Co., Ltd. Address before: Nanjing City, Jiangsu Province, 210003 South Shui Road No. 8 Patentee before: State Grid Electric Power Research Insititute Patentee before: Nanjing Nari Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20171204 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: State Grid Electric Power Research Insititute Patentee after: State Grid Corporation of China Co-patentee after: NARI Technology Development Co., Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: State Grid Electric Power Research Insititute Patentee before: State Grid Corporation of China Co-patentee before: Nanjing Nari Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100623 |
|
| CX01 | Expiry of patent term |