CN104197905A - Magnetic compass for preventing bubbles from reflowing to upper chamber - Google Patents
Magnetic compass for preventing bubbles from reflowing to upper chamber Download PDFInfo
- Publication number
- CN104197905A CN104197905A CN201410467326.5A CN201410467326A CN104197905A CN 104197905 A CN104197905 A CN 104197905A CN 201410467326 A CN201410467326 A CN 201410467326A CN 104197905 A CN104197905 A CN 104197905A
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- chamber
- compass
- counterweight ball
- liquid
- magnetic compass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
- G01C17/02—Magnetic compasses
- G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
- G01C17/06—Suspending magnetic elements
- G01C17/08—Suspending magnetic elements by flotation
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a magnetic compass for preventing bubbles from reflowing to an upper chamber. A compass bowl is divided into an upper chamber and a lower chamber by a bowl body interlayer; a liquid-filling exhaust through hole is formed in the middle of the bowl body interlayer; and is communicated with the upper chamber and the lower chamber; a hollow body is arranged on the bowl body interlayer and on the lower side of the liquid-filling exhaust through hole; an upper opening is communicated with the liquid-filling exhaust through hole; a lower opening is a circular opening; a counterweight ball which can move up and down in the lower opening is arranged in the lower opening; the diameter of the counterweight ball is greater than that of the lower opening of a gas-liquid channel; a limiting device for limiting the motion range of the counterweight ball is arranged at the upper opening of the gas-liquid channel; a flow channel opening for gas and liquid to pass through is formed between the limiting device and the upper opening; the counterweight ball cannot pass through the flow channel opening and cannot seal the flow channel opening; when bubbles generate in the compass bowl, the magnetic compass is turned by 180 degrees, so the bubbles can be discharged to the lower chamber through the liquid-filling exhaust through hole and the hollow body; the magnetic compass is convenient to use; besides, the bubbles discharged into the lower chamber cannot reflow to the upper chamber through the hollow body.
Description
Technical field
The present invention relates to a kind of magnetic compass, particularly be a kind of immersed compass.
Background technology
Existing navigation magnetic compass, is all generally that compass scale and floating chamber are placed in compass bowl, and sealing compass bowl in filling liquid, this magnetic compass function admirable, therefore be widely used.But this magnetic compass is subject to ambient temperature variable effect larger, when extraneous temperature raises, compass bowl expanded by heating, space enlargement in pelvic cavity, because expansion of liquids amount is less than the swell increment of compass bowl, pelvic cavity internal pressure reduces, air enters thereupon, forms bubble, affects the degree of accuracy of magnetic compass.When bubble is excessive, even can make magnetic compass malfunctioning, cannot use.And when temperature reduces, compass bowl shrinkage, basin cavity space dwindles, because liquid shrinkage amount is less than the shrinkage amount of compass bowl, pelvic cavity internal pressure increases, and the lighter causes intravenous extravasation, and severe one causes magnetic compass glass or compass bowl explosion, affect the serviceable life of magnetic compass, it is to causing magnetic compass to scrap.
In view of above-mentioned technical matters, look into Chinese patent literature ZL20051003609.1, CN100439030C " a kind of automatic liquid feeding air discharge magnetic compass, comprising: binnacle, the sealing-plug that is articulated with compass bowl in binnacle, compass scale, axonometer, floating chamber, liquid, is opened in the liquid filling hole on compass bowl diapire and seals this liquid filling hole, described compass scale, axonometer, floating chamber and liquid are arranged in compass bowl inner chamber, it is characterized in that: described compass bowl comprises the outer basin of compass from outside to inside successively, basin and basin body interlayer in compass, described liquid storage is gone up chamber in the separate space of basin body interlayer top, and in basin body interlayer and compass, the separate space between basin is lower indoor, described basin body interlayer is infundibulate, the bottom of basin body interlayer funnel be provided with a topping up vent port be communicated with described on He Xia chamber, chamber, described compass scale and floating chamber are positioned at indoor ", while producing bubble when temperature rising in compass bowl, only need 180 degree upset magnetic compasses the bubble of compass bowl inner accumulated can be drained into lower chamber by this topping up vent port, very easy to use, and when temperature reduces, it is lower indoor that upper indoor liquid can be squeezed to by this topping up vent port, the pressure that can maintain thus in the interior basin of compass and basin body interlayer is normal, guarantees the degree of accuracy of magnetic compass and the serviceable life that extends magnetic compass.But in actual use, in navigation process complicated and changeable, seagoing vessel at sea plays pendulum, indoor bubble random movement on the state waving under magnetic compass, the inwall that even occurs bubbles strike magnetic compass is broken into more less bubbles, and the random movement of bubble by the bubble that there will be lower chamber the topping up vent port in the middle of basin body interlayer by chamber entering into, thereby have influence on the degree of accuracy that affects magnetic compass.
Summary of the invention
In view of the technical matters existing in background technology, technical matters solved by the invention aims to provide the magnetic compass of the upper chamber of a kind of Anti-bubble backflow.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: the magnetic compass of the upper chamber of a kind of Anti-bubble backflow, comprise compass bowl, in compass bowl, be provided with basin body interlayer, described basin body interlayer is divided into separate He Xia chamber, upper chamber by compass bowl, the centre of described basin body interlayer is infundibulate to lower recess, in the middle of described basin body interlayer, be provided with topping up exhaust hole, described topping up exhaust hole is communicated with He Xia chamber, described upper chamber, it is characterized in that: the downside that is positioned at topping up exhaust hole on basin body interlayer is provided with ducted body, the inside of this ducted body is gas-liquid channel, the upper shed of gas-liquid channel is connected with topping up exhaust hole, the under shed of gas-liquid channel is circular open, in described gas-liquid channel, be provided with counterweight ball movable up and down, the diameter of counterweight ball is greater than the diameter of gas-liquid channel under shed, upper shed place of described gas-liquid channel is provided with the stop means of restriction counterweight ball scope of activities, described counterweight ball can be up and down between stop means and under shed, between described stop means and upper shed, there is the runner mouth passing through for gas-liquid, described counterweight ball cannot cannot seal this runner mouth by this runner mouth and described counterweight ball.
Described stop means comprises baffle plate and leg, and described baffle plate is located at topping up exhaust hole top by foot-supporting frame.
Described topping up exhaust hole is manhole, and the upper shed of described ducted body is mated and is connected with topping up exhaust hole size, and described topping up exhaust hole aperture is greater than the diameter of counterweight ball.
Described ducted body is rotary body and is comprised of upper shell and lower shell, and described upper shell is class truncated cone-shaped cylindrical shell, and the side of upper shell is outwards outstanding curved, and described lower shell is cylindrical tube, and the under shed of lower shell shrinks.
The end of described ducted body lateral surface and lateral surface and basin body interlayer junction are curved.
When described counterweight ball is positioned at ducted body lower opening, the surface of contact place between counterweight ball and ducted body and be positioned at ducted body and be only provided with the capillary groove passing through for upper and lower chamber liquid.
Described baffle plate bottom surface is provided with the concave surface of placing for counterweight ball.
Between Yu Xia chamber, described upper chamber, be provided with the kapillary only passing through for upper and lower chamber liquid.
The density of described counterweight ball is greater than the density of liquid in magnetic compass.
Beneficial effect of the present invention is, in compass bowl, by basin body interlayer, be separated into and independently go up He Xia chamber, chamber, and funnel shaped basin body interlayer bottom is provided with topping up exhaust hole and will between upper and lower chamber, be communicated with, while producing bubble when temperature rising in compass bowl, only need 180 degree upset magnetic compasses the bubble of compass bowl inner accumulated can be drained into lower chamber by topping up exhaust hole and Anti-bubble reflux, very easy to use, and the bubble that enters lower chamber cannot be back in upper chamber and be made magnetic compass performance more stable by Anti-bubble reflux, use convenient; And when temperature reduces, it is lower indoor that upper indoor liquid can be squeezed to by this topping up exhaust hole and capillary groove, the pressure that can maintain thus in compass bowl and basin body interlayer is normal, guarantees the degree of accuracy of magnetic compass and the serviceable life that extends magnetic compass.Therefore the present invention compared with prior art has outstanding substantive distinguishing features and significant progressive.
Accompanying drawing explanation
Details and the principle of work of embodiments of the present invention and embodiment are described below in conjunction with accompanying drawing.
Fig. 1 be compass bowl of the present invention along in axial plane sectional structure schematic diagram.
Fig. 2 is the inner structure schematic perspective view of compass bowl of the present invention.
Fig. 3 is perspective view on basin body interlayer.
Fig. 4 is perspective view under basin body interlayer.
Fig. 5 is axial plane sectional structure schematic diagram in basin body interlayer.Wherein contain counterweight ball in lower opening.
Fig. 6 is axial plane sectional structure schematic diagram in establishing after stop means on basin body interlayer.
The part assembling explosive view of Fig. 7 compass bowl.
Fig. 8 is the stereographic map of Fig. 7.
Embodiment
Referring to accompanying drawing, the magnetic compass of the upper chamber of a kind of Anti-bubble backflow in present embodiment, comprise compass bowl (cavity of a sealing), compass bowl will be articulated with on binnacle, compass scale, axonometer, floating chamber and liquid etc. are arranged in compass bowl inner chamber, in compass bowl, be provided with basin body interlayer 1, described basin body interlayer is divided into separate upper chamber 2 and lower chamber 3 by compass bowl, and on lower chamber 3, (as bottom) also will arrange liquid filling hole and sealing-plug.The centre of described basin body interlayer 1 is infundibulate to lower recess, in the middle of described basin body interlayer, be provided with topping up exhaust hole 4, described topping up exhaust hole is communicated with He Xia chamber, described upper chamber, the downside that is positioned at topping up exhaust hole 4 on basin body interlayer 1 is provided with ducted body 5, the inside of this ducted body is gas-liquid channel 6, the upper shed of gas-liquid channel is connected with topping up exhaust hole, the under shed of gas-liquid channel is circular open, in described gas-liquid channel, be provided with counterweight ball 7 movable up and down, the diameter of counterweight ball is greater than the diameter of gas-liquid channel under shed, upper shed place of described gas-liquid channel 6 is provided with the stop means 8 of restriction counterweight ball scope of activities, described counterweight ball can be up and down between stop means and under shed, between described stop means and upper shed, there is the runner mouth 9(runner mouth passing through for gas-liquid and can contain several openings), described counterweight ball cannot cannot seal this runner mouth by this runner mouth and described counterweight ball.
Therefore will form at topping up exhaust hole place Anti-bubble reflux (mainly being formed by ducted body, counterweight ball, stop means), in compass bowl, by basin body interlayer, be separated into and independently go up He Xia chamber, chamber, and funnel shaped basin body interlayer bottom is provided with topping up exhaust hole and will between upper and lower chamber, be communicated with, while producing bubble when temperature rising in compass bowl, only need 180 degree upset magnetic compasses the bubble of compass bowl inner accumulated can be drained into lower chamber by topping up exhaust hole and Anti-bubble reflux (runner mouth and gas-liquid channel), very easy to use.After drained bubble, turning over turnback makes chamber upper again, (density of counterweight ball is greater than the density of liquid in magnetic compass to counterweight ball so, in the present embodiment, can adopt steel ball, glass bead etc.) under shed in ducted body (being bottom opening) is located to block the path that bubble refluxes, therefore the bubble that enters lower chamber cannot be back in upper chamber and be made magnetic compass performance more stable by Anti-bubble reflux, practical and convenient.
Between Yu Xia chamber, upper chamber, be also provided with and only pass through for liquid capillary channel.When described counterweight ball is positioned at ducted body bottom (being under shed) opening part, surface of contact place between counterweight ball and ducted body and be positioned at ducted body and be only provided with the capillary groove passing through for upper and lower chamber liquid, capillary groove can not make bubble pass through, and capillary groove now will form capillary channel.Therefore when temperature reduces, upper indoor liquid can be squeezed to lower indoor by topping up exhaust hole and Anti-bubble reflux (runner mouth and ducted body inside and capillary groove), the pressure that can maintain thus in compass bowl and basin body interlayer is normal, guarantee the degree of accuracy of magnetic compass and the serviceable life that extends magnetic compass, further improve the function of magnetic compass.Or adopt kapillary to realize upper and lower chamber liquid and pass through, when temperature reduces, upper indoor liquid drains into lower chamber by kapillary, to go up between Yu Xia chamber, chamber the kapillary only passing through for upper and lower chamber liquid is set, kapillary can be set directly on basin body interlayer.In present embodiment capillary groove and kapillary only for liquid (as alcohol, water, anti freezing solution, kerosene etc.) pass through, the width of its passage or bore are within the scope of 0.5-2 millimeter, can adopt 1 millimeter.
Described stop means comprises baffle plate 10 and leg 11.Described baffle plate is arranged on the top of ducted body inside or ducted body upper shed.Ducted body and stop means form for the up and down space of counterweight ball.Referring to accompanying drawing, in the present embodiment, baffle plate is located at topping up exhaust hole top by foot-supporting frame, and baffle plate described in present embodiment is located at topping up exhaust hole top by foot-supporting frame.In the present embodiment, leg arranges three, and the space between leg (being runner mouth) passes through for bubble and liquid, and the size in space arranges restriction counterweight ball to be passed through, and can not allow again counterweight ball stop.The baffle plate of this enforcement stop means simultaneously can also be for arranging axonometer.
Described topping up exhaust hole 4 is manhole, and the upper shed of described ducted body is mated and is connected with topping up exhaust hole size, and described topping up exhaust hole aperture is greater than the diameter of counterweight ball.At magnetic compass, turn over after turnback like this (upper chamber under, lower chamber is upper) bubble and more can pass through smoothly, also can make larger bubble pass through smoothly.Described ducted body 5 is rotary body and is comprised of upper shell and lower shell, described upper shell is class truncated cone-shaped cylindrical shell, and the side of upper shell is outwards outstanding curved, and described lower shell is cylindrical tube, the under shed of lower shell shrinks, and the diameter of cylindrical tube is less than the diameter of topping up exhaust hole.When turning to about 90 degree, counterweight ball can be stable rests on arcuate flanks place, and the position of stablizing counterweight ball, avoids upsetting passing through of bubble.And lower shell is cylindrical tube, the Surface of Sphere that the counterweight ball of some is understood in the under shed contraction of lower shell is exposed at outside sleeve body, even if bubble is not below random movement can be attached to counterweight ball yet, can slip over along Surface of Sphere.
The end of described ducted body lateral surface and lateral surface and basin body interlayer junction are curved.Minimizing occurs that the inwall of bubbles strike magnetic compass is broken into the phenomenon of more less bubbles because of bubble indoor under magnetic compass random movement on the state waving.
Described baffle plate bottom surface is provided with the concave surface 14 of placing for counterweight ball, makes magnetic compass turn over after turnback (upper chamber under, lower chamber is upper), and the concave surface place that is placed on baffle plate that counterweight ball can be stable, avoids affecting the movement of bubble.
Its principle of work is as follows: while producing bubble when temperature rising in compass bowl, (upper chamber down only to need 180 degree upsets, lower chamber is upward) magnetic compass can drain into lower chamber by topping up exhaust hole and Anti-bubble reflux by the bubble of compass bowl inner accumulated, very easy to use, complete after the work of exhaust bubble, compass bowl is overturn, and (upper chamber upward, lower chamber is down) counterweight ball is the bottom opening place in ducted body, close the passage that bubble refluxes, therefore the bubble that enters lower chamber cannot be back in upper chamber and be made magnetic compass performance more stable by Anti-bubble reflux, use convenient, and when temperature reduces, upper indoor liquid can be squeezed to lower indoor by this topping up exhaust hole, ducted body and capillary groove, the pressure that can maintain thus in compass bowl and basin body interlayer is normal, guarantees the degree of accuracy of magnetic compass and the serviceable life that extends magnetic compass.
Claims (9)
1. an Anti-bubble refluxes and goes up the magnetic compass of chamber, comprise compass bowl, in compass bowl, be provided with basin body interlayer (1), described basin body interlayer is divided into separate upper chamber (2) and lower chamber (3) by compass bowl, the centre of described basin body interlayer is infundibulate to lower recess, in the middle of described basin body interlayer, be provided with topping up exhaust hole (4), described topping up exhaust hole is communicated with He Xia chamber, described upper chamber, it is characterized in that: the downside that is positioned at topping up exhaust hole on basin body interlayer is provided with ducted body (5), the inside of this ducted body is gas-liquid channel (6), the upper shed of gas-liquid channel is connected with topping up exhaust hole, the under shed of gas-liquid channel is circular open, in described gas-liquid channel, be provided with counterweight ball movable up and down (7), the diameter of counterweight ball is greater than the diameter of gas-liquid channel under shed, upper shed place of described gas-liquid channel is provided with the stop means (8) of restriction counterweight ball scope of activities, described counterweight ball can be up and down between stop means and under shed, between described stop means and upper shed, there is the runner mouth (9) passing through for gas-liquid, described counterweight ball cannot cannot seal this runner mouth by this runner mouth and described counterweight ball.
2. the magnetic compass of the upper chamber of a kind of Anti-bubble backflow as claimed in claim 1, is characterized in that: described stop means comprises baffle plate (10) and leg (11), and described baffle plate is located at topping up exhaust hole top by foot-supporting frame.
3. a kind of Anti-bubble as claimed in claim 1 refluxes and goes up the magnetic compass of chamber, it is characterized in that: described topping up exhaust hole is manhole, the upper shed of described ducted body is mated and is connected with topping up exhaust hole size, and described topping up exhaust hole aperture is greater than the diameter of counterweight ball.
4. a kind of Anti-bubble as claimed in claim 3 refluxes and goes up the magnetic compass of chamber, it is characterized in that: described ducted body is rotary body and is comprised of upper shell (12) and lower shell (13), described upper shell is class truncated cone-shaped cylindrical shell, the side of upper shell is outwards outstanding curved, described lower shell is cylindrical tube, and the under shed of lower shell shrinks.
5. the magnetic compass of the upper chamber of a kind of Anti-bubble backflow as described in claim as arbitrary in claim 1-4, is characterized in that: the end of described ducted body lateral surface and lateral surface and basin body interlayer junction are curved.
6. a kind of Anti-bubble as described in claim as arbitrary in claim 1-4 refluxes and goes up the magnetic compass of chamber, it is characterized in that: when described counterweight ball is positioned at ducted body lower opening, the surface of contact place between counterweight ball and ducted body and be positioned at ducted body and be only provided with the capillary groove passing through for upper and lower chamber liquid.
7. the magnetic compass of the upper chamber of a kind of Anti-bubble backflow as described in claim as arbitrary in claim 2, is characterized in that: described baffle plate bottom surface is provided with the concave surface (14) of placing for counterweight ball.
8. the magnetic compass of the upper chamber of a kind of Anti-bubble backflow as described in claim as arbitrary in claim 1-4, is characterized in that: between Yu Xia chamber, described upper chamber, be provided with the kapillary only passing through for upper and lower chamber liquid.
9. the magnetic compass of the upper chamber of a kind of Anti-bubble backflow as described in claim as arbitrary in claim 1-4, is characterized in that: the density of described counterweight ball is greater than the density of liquid in magnetic compass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410467326.5A CN104197905B (en) | 2014-09-15 | 2014-09-15 | The magnetic compass of the upper chamber of a kind of Anti-bubble backflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410467326.5A CN104197905B (en) | 2014-09-15 | 2014-09-15 | The magnetic compass of the upper chamber of a kind of Anti-bubble backflow |
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| CN104197905A true CN104197905A (en) | 2014-12-10 |
| CN104197905B CN104197905B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410467326.5A Active CN104197905B (en) | 2014-09-15 | 2014-09-15 | The magnetic compass of the upper chamber of a kind of Anti-bubble backflow |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052662A (en) * | 2016-08-12 | 2016-10-26 | 瑞安市顺风航仪有限公司 | Magnetic compass |
Citations (7)
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| US4464842A (en) * | 1981-08-03 | 1984-08-14 | Brookes & Gatehouse Limited | Suspension systems for flux gate compasses |
| US5107597A (en) * | 1989-08-24 | 1992-04-28 | Takeshi Kato | Magnetic compass |
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| KR100434586B1 (en) * | 2003-01-13 | 2004-06-07 | 원상호 | Stamp compass |
| CN2745032Y (en) * | 2004-07-26 | 2005-12-07 | 天津市明达修船有限公司 | Magnetic compass for vessels |
| CN1719197A (en) * | 2005-07-18 | 2006-01-11 | 何展辉 | Automatic liquid feeding air discharge magnetic compass |
| CN204043673U (en) * | 2014-09-15 | 2014-12-24 | 瑞安市顺风航仪有限公司 | A kind of magnetic compass of the upper room of Anti-bubble backflow |
-
2014
- 2014-09-15 CN CN201410467326.5A patent/CN104197905B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4464842A (en) * | 1981-08-03 | 1984-08-14 | Brookes & Gatehouse Limited | Suspension systems for flux gate compasses |
| US5107597A (en) * | 1989-08-24 | 1992-04-28 | Takeshi Kato | Magnetic compass |
| EP0486742A1 (en) * | 1990-11-21 | 1992-05-27 | Patrick Stolz | Magnetic compass |
| KR100434586B1 (en) * | 2003-01-13 | 2004-06-07 | 원상호 | Stamp compass |
| CN2745032Y (en) * | 2004-07-26 | 2005-12-07 | 天津市明达修船有限公司 | Magnetic compass for vessels |
| CN1719197A (en) * | 2005-07-18 | 2006-01-11 | 何展辉 | Automatic liquid feeding air discharge magnetic compass |
| CN204043673U (en) * | 2014-09-15 | 2014-12-24 | 瑞安市顺风航仪有限公司 | A kind of magnetic compass of the upper room of Anti-bubble backflow |
Non-Patent Citations (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052662A (en) * | 2016-08-12 | 2016-10-26 | 瑞安市顺风航仪有限公司 | Magnetic compass |
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| CN104197905B (en) | 2016-05-11 |
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