CN204064545U - Sensor water-proof installs protection mechanism and double-skin duct device for pressure measurement - Google Patents
Sensor water-proof installs protection mechanism and double-skin duct device for pressure measurement Download PDFInfo
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- CN204064545U CN204064545U CN201420536427.9U CN201420536427U CN204064545U CN 204064545 U CN204064545 U CN 204064545U CN 201420536427 U CN201420536427 U CN 201420536427U CN 204064545 U CN204064545 U CN 204064545U
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Abstract
The utility model discloses a kind of sensor water-proof and protection mechanism and double-skin duct device for pressure measurement are installed, sensor water-proof is installed protection mechanism and is comprised lead wire protective tube, is fixed on lead wire protective tube two ends and the mount pad be tightly connected with lead wire protective tube and seal plug, lead wire protective tube, seal plug are provided with the wire through-hole supplying the wire of sensor to pass, mount pad are provided with the cavity being communicated with, holding sensor head with wire through-hole; Double-skin duct device for pressure measurement comprises pressure transducer and aforementioned water-proof protection device; the interior pipe of double-skin duct offers mounting hole; mount pad is sealedly connected in this mounting hole, and lead wire protective tube stretches out outer tube, and at outer tube, outer and lead wire protective tube is tightly connected seal plug.The utility model can improve the waterproof reliability of sensor when double-skin duct structure inner tube pressure is measured, and can be applied in the circumstance of flowing water of submerged structure, double-skin duct and measure, have simple and compact for structure, waterproof high reliability.
Description
Technical field
The utility model relates to sensor and installs and measures technical field, particularly, relates to a kind of sensor water-proof and installs protection mechanism and have the double-skin duct device for pressure measurement that this sensor water-proof installs protection mechanism.
Background technology
Pressure transducer is a kind of typical fluid pressure pulse (as water hammer) survey sensor, it must reliably be installed on the pressure boundary of structure, when inside configuration pressure surge, resistance in sensor front end sensitive area changes, and output voltage signal, voltage output quantity through instrument amplification and pressure surge direct ratio, thus linearly converses the fluctuation pressure of detected fluid, and and then realizes pressure survey object.
Conventional pressure transducer, the measure traverse line of its sensor rear end is non-water-tight, and therefore, this pressure transducer is applicable to be arranged on the pressure surge of conventional pipeline, chamber wall being measured fluid, and sensor rear end wire does not need to consider waterproof in atmosphere.And for the pressure survey of pipe in double-skin duct, rear end wire need through the fluid in outer tube and on outer tube wall sealed guide again.Such fluid can enter in wire and resistive element from sensor rear end terminal, and because fluid has electric conductivity, cause sensor to insulate and reduce, the complete distortion of measuring-signal, this common pressure transducer just can not be used for the pressure survey of double-skin duct.
For solving pressure measurement under water problem, the common waterproofing pressure sensor of domestic and international sensor manufacturer production, sensor head drawn by its rubber wire is integral type, expects to avoid fluid to enter in resistive element from joint.This waterproofing pressure sensor is successful in application a middle or short term of low pressure Lentic environment, but the outer tube of double-skin duct has the current scour of high flow velocities (being greater than 4m/s), and wire is easy to the seal failure causing root joint place under fluid scouring.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of sensor water-proof with good water proofing property and installs protection mechanism and have the double-skin duct device for pressure measurement that this sensor water-proof installs protection mechanism; to improve the waterproof reliability of sensor when double-skin duct and underwater components pressure survey, make to have sensor surveying unit that this waterproof installs protection mechanism and can be applied in measurement in circumstance of flowing water.
The technical scheme in the invention for solving the above technical problem is:
Sensor water-proof installs protection mechanism; comprise lead wire protective tube, be separately fixed at lead wire protective tube two ends and the mount pad be tightly connected with lead wire protective tube and seal plug; described lead wire protective tube, seal plug are provided with the wire through-hole supplying the wire of sensor to pass, described mount pad are provided with the cavity of the sensor head being communicated with, holding sensor with wire through-hole.In this programme; mount pad by the joint sealing of sensor head and wire wherein; and adopt lead wire protective tube, mount pad and seal plug to be sealed by the section lead near joint; anti-stop water washes away the larger pulling force of this section lead butt junction generation and causes seal failure; guarantee waterproof sealing reliability, the sensor surveying unit with this protection mechanism can be applied in the circumstance of flowing water such as double-skin duct and submerged structure and carry out pressure survey.
Further, described mount pad is also provided with wire through-hole, this wire through-hole is communicated with the cavity on mount pad, the wire through-hole in lead wire protective tube.
Further, described mount pad and seal plug are welded on lead wire protective tube two ends respectively, can ensure lead wire protective tube two ends and sealing good between mount pad and seal plug simply and effectively.
Further, side relative with cavity on described mount pad is also provided with the connecting hole of conducting wire protection tube, and lead wire protective tube is sealedly connected in this connecting hole.
Double-skin duct device for pressure measurement, comprise pressure transducer, the wire that this pressure transducer comprises sensor body, the sensor head be connected with sensor body and is connected on sensor head, also comprise water-proof protection device, this water-proof protection device is that in such scheme, any one sensor water-proof installs protection mechanism, the interior pipe of double-skin duct offers mounting hole, described mount pad is sealedly connected in this mounting hole, described lead wire protective tube stretches out outer tube, and at outer tube, outer and lead wire protective tube is tightly connected seal plug; Be tightly connected with mount pad in the cavity that described sensor head is fixed on mount pad, wire is located in wire through-hole.Waterproof sealing in this programme mainly contains 2 points: one is sensor head and the sealing of connecting position of wires in mount pad; two is that wire seals by lead wire protective tube between the inner and outer pipe sections, can prevent from the working fluid between inner and outer tubes from washing away wire thus pull sensor head and connecting position of wires finally causing seal failure.Adopt the structure of this programme to ensure that aforementioned 2 good sealing properties, ensure that the waterproof sealing reliability of double-skin duct device for pressure measurement.
Further, described mounting hole is made up of the first mounting hole matched with mount pad and the second mounting hole of matching with sensor body, described mount pad is sealedly connected in this first mounting hole, described pressure transducer body is arranged in the second mounting hole, the diameter of described second mounting hole is less than the diameter of the first mounting hole, during installation, the sensitive area of one end that pressure transducer is not connected with sensor head is concordant with the medial surface of interior pipe and inner peripheral surface, to measure inner tube pressure better.
Further, between described sensor head and mount pad, filling has fluid sealant, the sealing property of further intensifier.
Further, between described mount pad and interior pipe, fill with fluid sealant, the sealing property of further intensifier.
Further, install the installation of protection mechanism for ease of sensor water-proof and stablize, above-mentioned double-skin duct device for pressure measurement also comprises stay pipe, and stay pipe one end is connected on outer tube, and the other end is connected with seal plug, and described lead wire protective tube is located in stay pipe.
To sum up, the beneficial effects of the utility model are:
1, sensor water-proof of the present utility model is installed protection mechanism and can effectively be prevented the joint of sensor head and connecting position of wires from intaking, and can to wash away near a section lead of this joint thus butt junction produces larger pulling force causes seal failure by effectively anti-stop water, the waterproof sealing reliability of sensor can be improved, make the sensor surveying unit (the double-skin duct device for pressure measurement in such as the utility model) with this protection mechanism can be applied to double-skin duct and submerged structure, pressure survey is carried out in circumstance of flowing water, for the pressure survey of double-skin duct and submerged structure provides effective means, the utility model has higher waterproof ability, good water-proof effect, ensure that the pressure survey of double-skin duct and submerged structure has higher reliability,
2, the double-skin duct device for pressure measurement in the utility model can under 5MPa pressure, measure in circumstance of flowing water, and within the time of one month, reliably can measure the pressure fluctuation requirement of pipe in double-skin duct, the waterproof reliability of pressure transducer when double-skin duct structure inner tube pressure is measured can be improved;
3, the utility model is simple and compact for structure, volume is little, measuring accuracy is high, good seal performance.
Accompanying drawing explanation
Fig. 1 is the structural representation that sensor water-proof of the present utility model installs protection mechanism and double-skin duct device for pressure measurement;
Fig. 2 is the structural representation of the mounting hole in embodiment 4 on interior pipe.
Mark and corresponding parts title in accompanying drawing:
1-sensor head, 2-wire, 3-mounting hole, 4-mount pad, 5-lead wire protective tube, 6-seal plug, pipe in 7-, 8-outer tube, 9-stay pipe, 10-sensor body.
Embodiment
Roughly thought of the present utility model is that the design junction of a kind of protective device to sensor head and wire seals; the sensor adopted is the sensor that can meet installing space and measuring accuracy requirement; sensor is with low noise shielded conductor; sensor head is originally as integral sealing; its one end connects shielded conductor, other end connecting sensor body.Waterproof sealing of the present utility model, mainly for the junction of sensor head and wire, and between the inner and outer pipe sections, prevents circumstance of flowing water from destroying being tightly connected of sensor and wire.Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but embodiment of the present utility model is not limited thereto.
Embodiment 1:
As shown in Figure 1; sensor water-proof is installed protection mechanism and is comprised lead wire protective tube 5, mount pad 4 and seal plug 6; wherein: mount pad 4 and seal plug 6 are separately fixed at lead wire protective tube 5 two ends and are tightly connected with lead wire protective tube 5; described lead wire protective tube 5, seal plug 6 are provided with the wire through-hole supplying the wire 2 of sensor to pass; described mount pad 4 is provided with the cavity of the sensor head 1 holding sensor, this cavity is communicated with wire through-hole.During installation, the sensor head 1 of sensor is sealedly connected in the cavity of mount pad 4, 2, wire passes from wire through-hole, mount pad 4 by the joint sealing of sensor head 1 and wire 2 wherein, lead wire protective tube 5, a section lead 2 near joint seals by mount pad 4 and seal plug 6, anti-stop water washes away the larger pulling force of this section lead 2 butt junction generation and causes seal failure, guarantee waterproof sealing reliability, make the sensor surveying unit with this protection mechanism can be applied to double-skin duct and submerged structure carries out pressure survey, for the pressure survey of double-skin duct and submerged structure provides effective means.The utility model not only may be used for the sealing of pressure transducer, also may be used for the sealing of other species sensor for double-skin duct and submerged structure.
Embodiment 2:
On the basis of embodiment 1; sensor water-proof in the present embodiment installs protection mechanism; its mount pad 4 is also provided with wire through-hole; this wire through-hole is communicated with the wire through-hole in the cavity on mount pad 4, lead wire protective tube 5; after the sensor head 1 of sensor is fixing, wire 2 passes successively from the wire through-hole of mount pad 4, lead wire protective tube 5, outward appearance seal plug 6.In the present embodiment; mount pad 4 and seal plug 6 are welded on lead wire protective tube 5 two ends respectively; good sealing can be ensured simply and effectively; in practical application; mount pad 4 and seal plug 6 also can adopt other conventional modes that is tightly connected with the mode that is tightly connected at lead wire protective tube 5 two ends, such as but not limited to use O-ring seal etc.
Embodiment 3:
On the basis of embodiment 1 or 2; in the present embodiment; mount pad 4 is also provided with the connecting hole of conducting wire protection tube 5; this connecting hole is axially identical with lead wire protective tube 5 axis and be positioned on the left of mount pad 4; cavity is positioned on the right side of mount pad 4, and the right-hand member of lead wire protective tube 5 is then sealedly connected in this connecting hole.
Embodiment 4:
As shown in Figure 1, double-skin duct device for pressure measurement comprises pressure transducer and water-proof protection device: water-proof protection device is that in embodiment 1 to 3, any one sensor water-proof installs protection mechanism; Pressure transducer comprises sensor head 1, be connected to wire 2 on the left of sensor head 1, be connected to sensor body 10 on the right side of sensor head 1; Be sealedly connected in this cavity in the cavity that sensor head 1 stretches into the mount pad 4 of water-proof protection device, draw in the wire through-hole of wire 2 from the lead wire protective tube 5 and seal plug 6 of water-proof protection device.
Double-skin duct has interior pipe 7 and outer tube 8; interior pipe 7 offers mounting hole 3; the mount pad 4 that sensor water-proof installs protection mechanism is sealedly connected in this mounting hole 3; described lead wire protective tube 5 stretches out outer tube 8, and seal plug 6 one end that outer and lead wire protective tube 5 stretches out outer tube 8 at outer tube 8 is tightly connected.
Pressure transducer in the present embodiment be select can meet installing space and measuring accuracy required pressure sensor; its sensor head 1 is as integral sealing; the waterproof sealing of the present embodiment is mainly for 2 sealings: one is sensor head 1 and the sealing of wire 2 junction; two is that wire 2 seals by lead wire protective tube 5 between interior pipe 7 and outer tube 8, can prevent the working fluid between interior pipe 7 and outer tube 8 from washing away wire 2 like this and pulls sensor head 1 and wire 2 junction thus cause seal failure.The present embodiment adopts said structure to ensure that aforementioned 2 good sealing properties in place, ensure that the waterproof sealing reliability of double-skin duct device for pressure measurement.
Embodiment 5:
As shown in Figure 2, on the basis of embodiment 4, mounting hole 3 in the present embodiment on above-mentioned interior pipe 7 is made up of the first mounting hole matched with mount pad 4, the second mounting hole of matching with sensor body 10, mount pad 4 is sealedly connected in this first mounting hole, the sensor body 10 of described pressure transducer is arranged in the second mounting hole, and sensitive area is concordant with the inside surface of interior pipe 7 on the right side of ensureing sensor body 10 when installing, the diameter of described second mounting hole is less than the diameter of the first mounting hole.In the present embodiment, sensor body 10 and whole sensor head 1 are all sealed in the mounting hole on interior pipe 7, improve sealing reliability further.
In Fig. 1 and Fig. 2, d1 is the diameter of sensor body 10, and d2 is the internal diameter of the second mounting hole; D3 is the internal diameter of the first mounting hole, and d4 is the external diameter of mount pad 4, and d5 is the diameter of cavity mount pad 4 holding sensor head 1, and d6 is the external diameter of lead wire protective tube 5; L1 is the length of sensor body 10, and its concrete numerical value can be arranged according to actual needs.
Embodiment 6:
On the basis of embodiment 4 or 5, the present embodiment adopts fluid sealant to seal double-skin duct device for pressure measurement further, to improve sealing property, ensures good waterproof effect, particularly, between its sensor head 1 and mount pad 4, mount pad 4 and interior pipe 7 all fill with fluid sealant.In addition, mount pad 4 and seal plug 6 are welded on lead wire protective tube 5 two ends respectively.
Embodiment 7:
On the basis of embodiment 6; double-skin duct device for pressure measurement in the present embodiment also comprises stay pipe 9, and stay pipe 9 one end is connected on outer tube 8, and the other end is connected with seal plug 6; seal plug 6 is bolted on stay pipe 9, and described lead wire protective tube 5 is located in stay pipe 9.
The installation method of the double-skin duct device for pressure measurement in the present embodiment is as follows:
1) the suitable pressure transducer that can meet the band wire 2 of installing space and measuring accuracy requirement is selected;
2) according to profile arrangement and the processing mount pad 4 of pressure transducer;
3) mounting hole 3 is offered according to pressure transducer and mount pad 4 size in the installation site of interior pipe 7;
4) according to the length of double-skin duct size determination lead wire protective tube 5, by lead wire protective tube 5 and mount pad 4, seal plug 6 seal welding to together with;
5) be contained in advance by pressure transducer in mount pad 4, wire 2 passes seal plug 6 after drawing from lead wire protective tube 5 rear end;
6) in mount pad 4, fill two component sealing gum, to guarantee after sealing glue solidifying good seal between sensor head 1 and mount pad 4; Sensor head 1 front end is placed in water, and the insulation between detecting sensor conducting wire end heart yearn and shielding line should be greater than 100M Ω;
7) one-piece construction with sensor head 1, mount pad 4, lead wire protective tube 5, seal plug 6 is installed toward mounting hole 3 position of interior pipe 7 through outer tube 8, fluid sealant is coated with outside surface on the right side of mount pad 4, make to coordinate between mount pad 4 with interior pipe 7 closely, avoid interior pipe 7 inside and outside differential pressure to cause fluid to leak; Ensure during trial assembly that sensitive area is concordant with the inside surface of interior pipe 7 on the right side of sensor body 10, finally tighting a bolt is fixed on seal plug 6 on stay pipe 9, completes the installation of waterproofing pressure sensor.
Double-skin duct device for pressure measurement in the present embodiment is applied in the in-pile component of reactor structure by inventor, carry out comprehensive Flow vibration in the structures such as double-skin duct and measure test, the flow velocity of the double-skin duct position of test is more than 4m/s, complete under design operating conditions of institute's geodesic structure is obtained in test, real test figure, Flow vibration review for reactor provides accurately real foundation, also demonstrate that in the present embodiment, double-skin duct device for pressure measurement has good waterproof reliability, test proves, under double-skin duct device for pressure measurement in the present embodiment is applied in 5MPa pressure, measure in circumstance of flowing water, and within the time of one month, reliably can measure the pressure fluctuation of pipe in double-skin duct.
Below be only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, not departing from the some improvements and modifications under the utility model principle prerequisite, protection domain of the present utility model should be considered as.
Claims (9)
1. sensor water-proof installs protection mechanism; it is characterized in that; comprise lead wire protective tube (5), be separately fixed at lead wire protective tube (5) two ends and the mount pad (4) be tightly connected with lead wire protective tube (5) and seal plug (6); described lead wire protective tube (5), seal plug (6) are provided with the wire through-hole supplying the wire (2) of sensor to pass, described mount pad (4) are provided with the cavity of the sensor head (1) being communicated with, holding sensor with wire through-hole.
2. sensor water-proof according to claim 1 installs protection mechanism, and it is characterized in that, (4) are also provided with wire through-hole to described mount pad, and this wire through-hole is communicated with the wire through-hole in the cavity on mount pad (4), lead wire protective tube (5).
3. sensor water-proof according to claim 1 installs protection mechanism, and it is characterized in that, described mount pad (4) and seal plug (6) are welded on lead wire protective tube (5) two ends respectively.
4. sensor water-proof according to claim 1 installs protection mechanism; it is characterized in that; the upper side relative with cavity of described mount pad (4) is also provided with the connecting hole of conducting wire protection tube (5), and lead wire protective tube (5) is sealedly connected in this connecting hole.
5. double-skin duct device for pressure measurement, comprise pressure transducer, this pressure transducer comprises sensor body (10), the sensor head (1) be connected with sensor body (10) and the wire (2) be connected on sensor head (1), it is characterized in that, also comprise water-proof protection device, this water-proof protection device is that in Claims 1-4, arbitrary described sensor water-proof installs protection mechanism, the interior pipe (7) of double-skin duct offers mounting hole (3), described mount pad (4) is sealedly connected in this mounting hole (3), described lead wire protective tube (5) stretches out outer tube (8), seal plug (6) is tightly connected with lead wire protective tube (5) outward at outer tube (8), be tightly connected with mount pad (4) in the cavity that described sensor head (1) is fixed on mount pad (4), wire (2) is located in wire through-hole.
6. double-skin duct device for pressure measurement according to claim 5, it is characterized in that, described mounting hole (3) is made up of the first mounting hole matched with mount pad (4) and the second mounting hole of matching with sensor body (10), described mount pad (4) is sealedly connected in this first mounting hole, described pressure transducer body (10) is arranged in the second mounting hole, and the diameter of described second mounting hole is less than the diameter of the first mounting hole.
7. double-skin duct device for pressure measurement according to claim 5, is characterized in that, filling with between described sensor head (1) and mount pad (4) has fluid sealant.
8. double-skin duct device for pressure measurement according to claim 5, is characterized in that, fills with fluid sealant between described mount pad (4) and interior pipe (7).
9. double-skin duct device for pressure measurement according to claim 5; it is characterized in that, also comprise stay pipe (9), stay pipe (9) one end is connected on outer tube (8); the other end is connected with seal plug (6), and described lead wire protective tube (5) is located in stay pipe (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420536427.9U CN204064545U (en) | 2014-09-18 | 2014-09-18 | Sensor water-proof installs protection mechanism and double-skin duct device for pressure measurement |
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| CN201420536427.9U CN204064545U (en) | 2014-09-18 | 2014-09-18 | Sensor water-proof installs protection mechanism and double-skin duct device for pressure measurement |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953032A (en) * | 2016-06-16 | 2016-09-21 | 水利部交通运输部国家能源局南京水利科学研究院 | Hollow heat insulation device with detachable sensor structure |
| CN106768616A (en) * | 2016-11-24 | 2017-05-31 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of aero-engine surging pressure test device and its assembly method |
| 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 |
| CN111341468A (en) * | 2020-03-18 | 2020-06-26 | 中国核动力研究设计院 | Sealing structure and method for installing sensor through two-layer pressure boundary |
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2014
- 2014-09-18 CN CN201420536427.9U patent/CN204064545U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953032A (en) * | 2016-06-16 | 2016-09-21 | 水利部交通运输部国家能源局南京水利科学研究院 | Hollow heat insulation device with detachable sensor structure |
| CN106768616A (en) * | 2016-11-24 | 2017-05-31 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of aero-engine surging pressure test device and its assembly method |
| 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 |
| CN107664567B (en) * | 2017-09-26 | 2021-02-09 | 上海核工程研究设计院有限公司 | Fixing device for acceleration sensor in beam-induced vibration test of heat transfer pipe |
| CN111341468A (en) * | 2020-03-18 | 2020-06-26 | 中国核动力研究设计院 | Sealing structure and method for installing sensor through two-layer pressure boundary |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yu Danping Inventor after: He Chao Inventor after: Wang Yunsheng Inventor after: Cong Bin Inventor after: Yang Jie Inventor before: Yu Danping |
|
| COR | Change of bibliographic data |