CN203274997U - Waterproof sealing device for force sensor of underwater measurement - Google Patents
Waterproof sealing device for force sensor of underwater measurement Download PDFInfo
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- CN203274997U CN203274997U CN 201320340128 CN201320340128U CN203274997U CN 203274997 U CN203274997 U CN 203274997U CN 201320340128 CN201320340128 CN 201320340128 CN 201320340128 U CN201320340128 U CN 201320340128U CN 203274997 U CN203274997 U CN 203274997U
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Abstract
The utility model discloses a waterproof sealing device for a force sensor of underwater measurement. The waterproof sealing device comprises s bolt (1) connected with an outer container of a measured structure, and a stud (2) connected with the force sensor. The stud (2) is provided with an internal thread hole (6), a force sensor connector (4) is arranged inside the internal thread holes (6) through threaded connection; a through hole (3) for allowing a wire is arranged in the middle of the bolt (1); and the through hole (3) is provided with an internal thread which cooperates with an external thread of the stud (2). The waterproof sealing device of the utility model can carry out the waterproof sealing to the connection between the force sensor and the wire and to the wire, so as to prevent the measuring distortion of the force sensor due to the fluid effects and to increase the fluid pressure bearing strength of the connection between the force sensor and the wire; the underwater measurement requirement is satisfied; and the waterproof sealing device has the advantages of simple and compact structure, convenient installation, low cost, and the like.
Description
Technical field
The utility model relates to power installation of sensors servicing unit, relates in particular to a kind of power sensor waterproof sealing device for underwater survey.
Background technology
The power sensor is collision and the sensor of the power size that contacts between a kind of typical measurement structure, it need reliably be installed between structure, when being in contact with one another between structure and colliding, piezoelectric element in sensor is subject to the effect of inertial mass and produces electric charge, the electric charge output quantity is directly proportional to impact, the electric charge output quantity amplifies and changes into voltage signal by charge amplifier, be transferred to Displaying Meter, thereby linearity converses tested interstructural impact.
Conventional power sensor, its sensor connector and measure traverse line joint separate, and this power sensor is applicable to measure interstructural impact in conventional air.And for the impact of measuring between submerged structure, fluid can enter in wire and piezoelectric element from the joint, because fluid has electric conductivity, cause the sensor insulation to reduce, the complete distortion of measuring-signal, therefore, this common power sensor can not be directly used in underwater survey.The general power sensor that is used for underwater survey has all carried out integral sealing, structure as shown in Figure 1, its power sensor connector 4, terminal 5 are sealed connected together, and wherein are provided with external thread on power sensor connector 4.
In addition, in nuclear reactor in-pile component stream causes vibration test, institute's geodesic structure all under water, interstructural impact is caused by Fluid Flow in A incentive structure vibration, and measures complex structure.The vibration of Fluid Flow in A incentive structure, flow velocity higher meeting scour sensor and measure traverse line thereof; The junction of usual forces sensor and measure traverse line is non-watertight, and the maximum fluid pressure that generally can bear is about 50 atmospheric pressure, and pressure rising again can cause the waterproof sealing disabler of sensor measurement wire.
Therefore, when measuring under water, the power sensor need to be equipped with the waterproof protection device for installing of high waterproof sealing performance, with satisfy under elevated pressures, underwater survey requirement reliably in long Measuring Time in circumstance of flowing water, more than one month.
The utility model content
The technical problems to be solved in the utility model just is: for the problems referred to above of prior art existence, the utility model provides a kind of power sensor waterproof sealing device for underwater survey, the power sensor is carried out high waterproof sealing, prevent the measurement distortion that the power sensor causes because of the fluid impact, and the hydrodynamic pressure bearing strength of enhancing power sensor and connecting position of wires, to satisfy the underwater survey requirement.
For achieving the above object, power sensor waterproof sealing device for underwater survey of the present utility model, comprise and the bolt that is connected by the outer container of geodesic structure, the double-screw bolt that is connected with the power sensor, wherein: double-screw bolt is provided with internal thread hole, and the power sensor connector is threaded in internal thread hole; Be provided with the through hole that passes through for wire in the middle of bolt, be provided with one section internal thread that matches with the external thread of double-screw bolt in through hole.
Be further to strengthen sealing effectiveness, as preferably, between above-mentioned double-screw bolt and power sensor connector, all be filled with encapsulant between double-screw bolt and bolt.
For ease of operating in installation process, as preferably, above-mentioned encapsulant is liquid-state silicon gel.
In order to save cost of products and sensor connector, terminal, bolt, double-screw bolt to be coordinated better, as preferably, internal thread in above-mentioned through hole is positioned at through hole near an end of power sensor, and the length of the thread segment that the height of above-mentioned double-screw bolt and through hole are interior is identical; The length of the thread segment in above-mentioned through hole is identical with the length of power sensor connector.
Sealing principle of the present utility model is: the power sensor threads is connected in double-screw bolt, realizes sealing first; Double-screw bolt is threaded again with the through hole of bolt, and power sensor connector, double-screw bolt, the terminal in double-screw bolt all is sealed in bolt like this, realizes secondary seal.
The utlity model has following advantage:
1, the utility model adopts bolt, double-screw bolt to carry out waterproof sealing twice to sensor connector and terminal place, sensor conductor; guaranteed the reliability of impact force measurement result between submerged structure; also strengthened simultaneously the hydrodynamic pressure bearing strength of power sensor and connecting position of wires; avoided the waterproof sealing function of hydrodynamic pressure destructive power sensor and connecting position of wires; effective protection sensor; its water resistance is good, the measurement reliability is high, for underwater survey provides means effectively reliably.
2, the utility model adopts bolt, double-screw bolt and encapsulant to realize waterproof sealing, and simple and compact for structure, production procurement is easy, easy for installation, cost is low.
Description of drawings
Fig. 1 is the structural representation of existing integral sealing sensor;
Fig. 2 is decomposition texture schematic diagram of the present utility model;
Fig. 3 is that the B of Fig. 2 is to view.
Marginal data:
1, bolt; 2, double-screw bolt; 3, through hole; 4, power sensor connector; 5, terminal; 6, internal thread hole.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited only to this.
[embodiment 1]
As shown in Figures 2 and 3, power sensor waterproof sealing device for underwater survey of the present utility model comprises bolt 1 and double-screw bolt 2: the diameter of screw of bolt 1 is Md4, with be connected by the outer container of geodesic structure, the through hole 3 that the middle wire that has a confession power sensor of bolt 1 passes through, the aperture of through hole 3 is Φ d2, the leading portion of through hole 3 is processed into the screw thread of Md3, and the length of this thread segment is L; Double-screw bolt 2 height are h, and its external thread matches with the screw thread of the Md3 of Φ d2 through hole leading portion, and double-screw bolt 2 also is provided with internal thread hole 6, and its internal thread diameter is Md1, and this internal thread is threaded with the Md1 of sensor connector.In the present embodiment, power sensor connector 4 integral sealings, sensor conductor is for having more high-tensile waterproof low-noise lead, and power sensor connector 4 is threaded with double-screw bolt 2, realizes waterproof sealing first; Double-screw bolt 2 is threaded again with the through hole 3 of bolt 1; power sensor connector 4, double-screw bolt 2, terminal 5 in double-screw bolt 2 all are sealed in bolt 1; realize the secondary waterproof sealing; also strengthened simultaneously the hydrodynamic pressure bearing strength of power sensor and connecting position of wires; avoided the waterproof sealing function of hydrodynamic pressure destructive power sensor and connecting position of wires; effective protection sensor, its water resistance is good, the measurement reliability is high, for underwater survey provides means effectively reliably.
[embodiment 2]
On the basis of embodiment 1, between the double-screw bolt 2 and power sensor connector 4 of the power sensor waterproof sealing device that is used for underwater survey of the present embodiment, all be filled with encapsulant between double-screw bolt 2 and bolt 1, for ease of operating in installation process, select liquid sealant to fill, as liquid-state silicon gel.Its concrete installation steps are as follows:
Step 1: apply encapsulant on the internal thread of double-screw bolt 2, and with in power sensor connector 4 precession double-screw bolts 2;
Step 2: connect power sensor connector 4 and terminal 5;
Step 3: detect force sensor signals transmission situation, normal to guarantee the force sensor signals transmission;
Step 4: wire is passed the through hole 3 of bolt 1, enter from the thread end of through hole 3, pass from the other end;
Step 5: apply encapsulant on the external thread with double-screw bolt 2, and the through hole of precession bolt 1;
Step 6: detect the insulativity between power sensor conductor termination heart yearn and shielding line, guarantee that its insulation is greater than 100M Ω.
Wherein, in step 5, also the external thread of double-screw bolt 2 and sensor all can be applied encapsulant, the external thread of double-screw bolt 2 and sensor all is sealed in bolt 1.
In the present embodiment, further adopt encapsulant that power sensor connector 4 is sealed in double-screw bolt 2, and double-screw bolt 2, sensor connector 4 are sealed in bolt 1, further improve its water resistance, strengthen product serviceable life, ensure that it can satisfy long-time requirement of measuring under water.
[embodiment 3]
In order to save cost of products and sensor connector, terminal, bolt, double-screw bolt to be coordinated better, improve on the basis of embodiment 2 in the present embodiment, internal threads in above-mentioned through hole 3 are positioned at through hole 3 near an end of power sensors, and the length L of the thread segment that the height H of above-mentioned double-screw bolt 2 and through hole 3 are interior is identical; The length L of the thread segment in above-mentioned through hole 3 is identical with the length of power sensor connector 4.
Be only below preferred implementation of the present utility model, protection domain of the present utility model also not only is confined to above-described embodiment, and all technical schemes that belongs under the utility model thinking all belong to protection domain of the present utility model.Should be pointed out that for those skilled in the art, the some improvements and modifications not breaking away under the utility model principle prerequisite should be considered as protection domain of the present utility model.
Claims (6)
1. be used for the power sensor waterproof sealing device of underwater survey, it is characterized in that, comprise and the bolt that is connected by the outer container of geodesic structure (1), the double-screw bolt (2) that is connected with the power sensor; Described double-screw bolt (2) is provided with internal thread hole (6), and power sensor connector (4) is threaded in internal thread hole (6); Be provided with the through hole (3) that passes through for wire in the middle of described bolt (1), be provided with one section internal thread that matches with the external thread of double-screw bolt (2) in described through hole (3).
2. the power sensor waterproof sealing device for underwater survey according to claim 1, is characterized in that, between described double-screw bolt (2) and power sensor connector (4), all be filled with encapsulant between double-screw bolt (2) and bolt (1).
3. the power sensor waterproof sealing device for underwater survey according to claim 2, is characterized in that, described encapsulant is liquid-state silicon gel.
According to claim 1 to 3 arbitrary described power sensor waterproof sealing device for underwater survey, it is characterized in that, the internal thread in described through hole (3) is positioned at through hole (3) near an end of power sensor.
According to claim 1 to 3 arbitrary described power sensor waterproof sealing device for underwater survey, it is characterized in that, the length of the thread segment in the height of described double-screw bolt (2) and through hole (3) is identical.
According to claim 1 to 3 arbitrary described power sensor waterproof sealing device for underwater survey, it is characterized in that, the length of the thread segment in described through hole (3) is identical with the length of power sensor connector (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320340128 CN203274997U (en) | 2013-06-14 | 2013-06-14 | Waterproof sealing device for force sensor of underwater measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320340128 CN203274997U (en) | 2013-06-14 | 2013-06-14 | Waterproof sealing device for force sensor of underwater measurement |
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| Publication Number | Publication Date |
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| CN203274997U true CN203274997U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320340128 Expired - Lifetime CN203274997U (en) | 2013-06-14 | 2013-06-14 | Waterproof sealing device for force sensor of underwater measurement |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527458A (en) * | 2015-12-03 | 2016-04-27 | 中国船舶重工集团公司第七0四研究所 | Complete immersion sensor |
| CN106248303A (en) * | 2016-07-15 | 2016-12-21 | 中国核动力研究设计院 | The pressurizer of detection waterproof sealing performance of sensors |
| CN107228730A (en) * | 2017-07-12 | 2017-10-03 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | The embedded pressure-resistant seal and signal transmitting apparatus of a kind of differential pressure pick-up under water |
| CN107664567A (en) * | 2017-09-26 | 2018-02-06 | 上海核工程研究设计院有限公司 | A kind of heating surface bank Flow vibration tests acceleration transducer fixing device |
-
2013
- 2013-06-14 CN CN 201320340128 patent/CN203274997U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527458A (en) * | 2015-12-03 | 2016-04-27 | 中国船舶重工集团公司第七0四研究所 | Complete immersion sensor |
| CN106248303A (en) * | 2016-07-15 | 2016-12-21 | 中国核动力研究设计院 | The pressurizer of detection waterproof sealing performance of sensors |
| CN107228730A (en) * | 2017-07-12 | 2017-10-03 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | The embedded pressure-resistant seal and signal transmitting apparatus of a kind of differential pressure pick-up under water |
| CN107664567A (en) * | 2017-09-26 | 2018-02-06 | 上海核工程研究设计院有限公司 | A kind of heating surface bank Flow vibration tests acceleration transducer fixing device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |