CN109425413B - Marine adjustable liquid level alarm sensor with double alarm points - Google Patents
Marine adjustable liquid level alarm sensor with double alarm points Download PDFInfo
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- CN109425413B CN109425413B CN201710790043.8A CN201710790043A CN109425413B CN 109425413 B CN109425413 B CN 109425413B CN 201710790043 A CN201710790043 A CN 201710790043A CN 109425413 B CN109425413 B CN 109425413B
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- 239000007788 liquid Substances 0.000 title claims abstract description 30
- 230000006698 induction Effects 0.000 claims abstract description 123
- 238000012360 testing method Methods 0.000 claims abstract description 36
- 230000001681 protective effect Effects 0.000 claims description 10
- 230000009977 dual effect Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 235000014676 Phragmites communis Nutrition 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 238000007689 inspection Methods 0.000 abstract description 5
- 238000005339 levitation Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
- G01F23/72—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means
- G01F23/74—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means for sensing changes in level only at discrete points
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a marine adjustable liquid level alarm sensor with double alarm points, wherein a hollow conduit and a test pull rod of the sensor are arranged in parallel, a wiring terminal is arranged at the top end of the hollow conduit, a first magnetic induction element and a second magnetic induction element are arranged in the hollow conduit, a signal wire is connected with the wiring terminal, the first magnetic induction element and the second magnetic induction element are sleeved outside the hollow conduit and lift along the hollow conduit, the positions of the first magnetic induction element and the second magnetic induction element respectively correspond to the positions of the first magnetic induction element and the second magnetic induction element, two ends of a first positioning cross rod are sleeved into the hollow conduit and the test pull rod respectively and are positioned on the bottom surface of the first magnetic induction element, two ends of a second positioning cross rod are sleeved into the hollow conduit and the test pull rod respectively and are positioned between the first magnetic induction ball and the second magnetic induction element, and a tray is sleeved into the hollow conduit and is positioned on the bottom surface of the second magnetic induction element. The sensor has the advantages that the alarm points are adjustable, the high-level/overflow alarm points of the cargo tank can be conveniently and respectively adjusted, so that the requirement of the construction of a real ship is met, the ship construction period is ensured, and the requirement of ship inspection is met.
Description
Technical Field
The invention relates to a marine adjustable liquid level alarm sensor with double alarm points.
Background
The liquid level alarm sensor is mainly applied to the high-level/overflow alarm of the cargo tank, and according to the specifications of the class society, the high-level/overflow alarm is carried out when the liquid level of the cargo tank exceeds 95%/98% of the cargo tank capacity of the ship provided with the cargo tank cargo steam control system. Therefore, the cargo tank of this type of ship needs to be equipped with a high level/overflow level alarm sensor. According to the conventional method, the sensor needs to calculate the actual high-level/overflow alarm point according to a bilge table or a bilge calculation book designed during ship design, and then design and production of the sensor are carried out according to the actual high-level/overflow alarm point. However, in the practical application process, the sensor cannot be normally arranged for production due to the lag of a bilge meter theoretically calculated in the ship design, and the construction period of the ship is affected; meanwhile, the theoretically calculated bilge table has a certain difference with the data of the real ship during construction, and the ship inspection requirement cannot be met, so that the sensor needs to be replaced or the sensor needs to be returned to a factory for modification.
Disclosure of Invention
The invention aims to solve the technical problem of providing the marine adjustable liquid level alarm sensor with double alarm points, wherein the alarm points of the sensor are adjustable, so that the adjustment of the high-level/overflow alarm points of the liquid cargo tank is conveniently realized, the requirement of the actual ship construction is met, the ship construction period is ensured, and the marine adjustable liquid level alarm sensor meets the ship inspection requirement.
In order to solve the technical problems, the marine adjustable liquid level alarm sensor with double alarm points comprises a hollow conduit, a first magnetic induction element, a second magnetic induction element, a first magnetic induction ball, a second magnetic induction ball, a first positioning cross rod, a second positioning cross rod, a tray, a test pull rod and a wiring terminal, wherein the hollow conduit and the test pull rod are arranged at intervals in parallel, the wiring terminal is arranged at the top end of the hollow conduit, the first magnetic induction element and the second magnetic induction element are arranged in the hollow conduit at intervals and connected with the wiring terminal through signal wires, the first magnetic induction ball and the second magnetic induction ball are sleeved on the outer ring of the hollow conduit and lift along the hollow conduit, the positions of the first magnetic induction ball and the second magnetic induction ball on the hollow conduit respectively correspond to the positions of the first magnetic induction element and the second magnetic induction element in the hollow conduit, two ends of the first positioning cross rod are sleeved in the hollow conduit and the test pull rod respectively and are positioned on the bottom surface of the first magnetic induction ball, the first positioning cross rod is fixed on the top of the hollow conduit through bolts, the second positioning cross rod is fixed on the hollow conduit and the second magnetic induction ball is sleeved on the bottom surface of the second magnetic induction ball through the second positioning cross rod.
Further, the sensor further comprises a self-checking cross rod, wherein the self-checking cross rod is sleeved into the test pull rod and is positioned between the second positioning cross rod and the second magnetic floating ball, and the self-checking cross rod is fixed on the test pull rod through a bolt, and the free end of the self-checking cross rod extends to the lower part of the bottom surface of the second magnetic floating ball.
Further, when the first magnetic floating ball and the second magnetic floating ball are respectively close to the first magnetic induction element and the second magnetic induction element, the first magnetic induction element and the second magnetic induction element respectively output closed contact signals under the action of a magnetic field; when the first magnetic floating ball and the second magnetic floating ball leave the first magnetic induction element and the second magnetic induction element respectively, the first magnetic induction element and the second magnetic induction element are not influenced by an external magnetic field any more, and an open contact signal is output as an alarm signal; under the condition that the first magnetic floating ball and the second magnetic floating ball are in fault, the first magnetic induction element and the second magnetic induction element are not influenced by an external magnetic field any more, and an open contact signal is output as a fault signal.
Further, the first magnetic induction element and the second magnetic induction element are reed switches.
Further, the sensor further comprises an operating handle, and the operating handle is arranged at the top end of the test pull rod.
Further, the sensor further comprises a protective shell, wherein the protective shell is arranged at the top end of the hollow conduit and the top end of the test pull rod, and the wiring terminal is positioned in the protective shell.
Because the marine adjustable liquid level alarm sensor with double alarm points adopts the technical scheme, namely, the hollow guide pipe and the test pull rod of the sensor are arranged in parallel, the wiring terminal is arranged at the top end of the hollow guide pipe, the first magnetic induction element and the second magnetic induction element are arranged in the hollow guide pipe, the signal wire is connected with the wiring terminal, the first magnetic floating ball and the second magnetic floating ball are arranged in the hollow guide pipe and lift along the hollow guide pipe, the positions of the first magnetic floating ball and the second magnetic induction element respectively correspond to the positions of the first magnetic induction element and the second magnetic induction element, the two ends of the first positioning cross rod are sleeved into the hollow guide pipe and the test pull rod respectively and are positioned on the bottom surface of the first magnetic floating ball and are fixed on the test pull rod through bolts, the two ends of the second positioning cross rod are sleeved into the hollow guide pipe and the test pull rod respectively and are positioned between the first magnetic floating ball and the second magnetic floating ball and are fixed on the bottom surface of the hollow guide pipe through bolts. The sensor has the advantages that the alarm points are adjustable, the high-level/overflow alarm points of the cargo tank can be conveniently and respectively adjusted, so that the requirement of the construction of a real ship is met, the ship construction period is ensured, and the requirement of ship inspection is met.
Drawings
The invention is described in further detail below with reference to the attached drawings and embodiments:
FIG. 1 is a schematic diagram of a dual alarm point marine adjustable liquid level alarm sensor according to the present invention.
Detailed Description
The marine adjustable liquid level alarm sensor with double alarm points comprises a hollow guide pipe 1, a first magnetic induction element 2, a second magnetic induction element 3, a first magnetic induction ball 4, a second magnetic induction ball 5, a first positioning cross rod 6, a second positioning cross rod 7, a tray 8, a test pull rod 9 and a connecting terminal 10, wherein the hollow guide pipe 1 and the test pull rod 9 are arranged at intervals in parallel, the connecting terminal 10 is arranged at the top end of the hollow guide pipe 1, the first magnetic induction element 2 and the second magnetic induction element 3 are arranged in the hollow guide pipe 1 at intervals and are connected with the connecting terminal 10 through signal wires, the first magnetic induction ball 4 and the second magnetic induction ball 5 are sleeved on the outer ring of the hollow guide pipe 1 and ascend along the hollow guide pipe 1, the positions of the first magnetic induction ball 4 and the second magnetic induction ball 5 on the hollow guide pipe 1 respectively correspond to the positions of the first magnetic induction element 2 and the second magnetic induction element 3 in the hollow guide pipe 1, the two ends of the first positioning cross rod 6 are sleeved on the hollow guide pipe 1 and the bottom surface 9 respectively and are positioned on the second magnetic induction ball 4 and the second magnetic induction ball 5 is sleeved on the second magnetic induction ball 6 and fixed on the hollow guide pipe 1 through the second magnetic induction ball 7 and the second magnetic induction ball 5 and the test pull rod 9 respectively, and the first positioning cross rod 9 is sleeved on the hollow guide pipe 1 and the second magnetic ball 5 and the test pull rod 9 respectively.
Preferably, the sensor further comprises a self-checking cross rod 11, wherein the self-checking cross rod 11 is sleeved into the test pull rod 9 and is positioned between the second positioning cross rod 7 and the second magnetic levitation ball 5, the self-checking cross rod 11 is fixed on the test pull rod 9 through bolts, and the free end of the self-checking cross rod extends to the lower part of the bottom surface of the second magnetic levitation ball 5.
Preferably, when the first magnetic levitation ball 5 and the second magnetic levitation ball 6 are close to the first magnetic induction element 2 and the second magnetic induction element 3, respectively, the first magnetic induction element 2 and the second magnetic induction element 3 output closed contact signals under the action of a magnetic field; when the first magnetic levitation ball 4 and the second magnetic levitation ball 5 leave the first magnetic induction element 2 and the second magnetic induction element 3 respectively, the first magnetic induction element 2 and the second magnetic induction element 3 are not influenced by an external magnetic field any more, and an open contact signal is output as an alarm signal; under the fault condition of the first magnetic levitation ball 5 and the second magnetic levitation ball 6, such as the falling of the magnetic levitation balls, the failure of the magnetic steel in the magnetic levitation balls, and the like, the first magnetic induction element 2 and the second magnetic induction element 3 are not influenced by an external magnetic field any more, and an open contact signal is output as a fault signal.
Preferably, the first magnetic induction element 2 and the second magnetic induction element 3 are reed switches.
Preferably, the sensor further comprises an operating handle 91, and the operating handle 91 is arranged at the top end of the test pull rod 9. The operation handle is convenient for lifting the test pull rod, the test pull rod can be lifted upwards through the operation handle to check whether the sensor fails or not in the non-alarm state of the sensor, and the two alarm points are triggered sequentially according to the sequence of the first alarm point and the second alarm point; when the test pull rod is lifted upwards through the operating handle, the first magnetic floating ball ascends first, and the first magnetic induction element loses the influence of the magnetic field so as to send out a first alarm signal; when the test pull rod continues to ascend, the second magnetic floating ball is driven by the self-checking cross rod to ascend, and the second magnetic induction element loses the influence of the magnetic field, so that the second alarm signal is triggered.
Preferably, the sensor further comprises a protective shell 12, the protective shell 12 is arranged at the top ends of the hollow conduit 1 and the test pull rod 9, and the wiring terminal 10 is positioned in the protective shell 12. The protective housing serves as a barrier and mechanical protection of the internal components of the present sensor from the surrounding environment, and its dust and water tightness properties meet the IP56 standard specified in GB 4208-2008/lEC 60529, 2001.
The sensor adopts a first magnetic induction element, a first magnetic induction ball, a second magnetic induction element and a second magnetic induction ball to collect liquid level high-level/overflow signals of a liquid warehouse respectively and serve as two alarm points, the first magnetic induction ball and the second magnetic induction ball ascend and descend along a hollow catheter under the action of liquid force, the liquid level signals are induced through the first magnetic induction element and the second magnetic induction element respectively, and the first magnetic induction element and the second magnetic induction element signal wires are connected with a controller through connecting terminals to give high-level/overflow alarm.
The first positioning cross rod in the sensor is used for positioning and position adjustment of the first magnetic floating ball, the adjustment of a high-position alarm point is realized by adjusting the relative position of the first positioning cross rod on the pull rod, and when the position of the first positioning cross rod is adjusted, the position of the first magnetic induction element is correspondingly adjusted; the first magnetic induction element is used for collecting signals of high-level alarm, the first magnetic induction ball is used for driving the high-level alarm signals, when the liquid level does not reach the high-level alarm position, the first magnetic induction element outputs switching value signals of normal liquid level (without high-level alarm) under the influence of the first magnetic induction ball, when the liquid level rises to a position exceeding a preset high-level alarm point, the first magnetic induction ball ascends and leaves the position which can influence the first magnetic induction element, and the first magnetic induction element outputs switching value signals of high-level alarm; the first positioning cross rod is fixed on the pull rod through a bolt and used for limiting the upper part of the first magnetic floating ball, so that the first magnetic floating ball is prevented from floating to a position which can influence the second magnetic induction element after the liquid level rises, and the output signal of the second magnetic induction element is changed to cause false alarm; the tray is used for positioning and adjusting the position of the second magnetic induction ball, the position of the tray on the hollow guide pipe is adjusted to realize the adjustment of the overflow alarm point, and the position of the second magnetic induction element is correspondingly adjusted when the position of the tray is adjusted; the second magnetic induction element is used for collecting signals of overflow alarm, the second magnetic induction ball is a driving element of the overflow alarm signal, and when the liquid level does not reach the alarm position, the second magnetic induction element is influenced by the second magnetic induction ball to output a switching value signal of normal liquid level (no overflow alarm); when the liquid level rises to a position exceeding a preset overflow alarm point, the second magnetic-sensing ball floats upwards and leaves the position which can influence the second magnetic-sensing element, and the second magnetic-sensing element outputs an overflow alarm switching value signal; the hollow conduit is used for mechanical protection and position fixation of the first magnetic induction element and the second magnetic induction element and preventing direct contact with liquid, and has the guiding function of the first magnetic levitation ball and the second magnetic levitation ball; the pull rod is used for fixing the first positioning cross rod, the second positioning cross rod and the self-checking cross rod, and the positions of the first positioning cross rod, the second positioning cross rod and the self-checking cross rod on the pull rod can be adjusted through bolts so as to achieve corresponding functions.
The sensor also has a manual test function of liquid level high level/overflow alarm, and the pull rod is lifted during test, so that the first positioning cross rod and the self-checking cross rod respectively drive the first magnetic floating ball and the second magnetic floating ball to ascend along the hollow guide pipe, the first magnetic floating ball and the second magnetic floating ball respectively reach the high level and the overflow alarm position in sequence, and the first magnetic induction element and the second magnetic induction element output high level and overflow alarm signals accordingly, thereby realizing the test of the sensor.
The sensor realizes that the alarm position of the installed liquid level alarm sensor can be adjusted within a certain range according to actual needs by flexibly adjusting the positions of the two alarm points, so that the liquid level alarm sensor for mass production can be adjusted according to needs when in actual use, or when the calculated bilge table of the cargo tank is inconsistent with a real ship, the alarm points of the liquid level alarm sensor are adjusted to meet the needs of the real ship without changing the real ship in a factory, the ship construction period is ensured, and the ship inspection requirements are met.
Claims (5)
1. The utility model provides a marine adjustable liquid level alarm sensor of two alarming points which characterized in that: the sensor comprises a hollow conduit, a first magnetic induction element, a second magnetic induction element, a first magnetic floating ball, a second magnetic floating ball, a first positioning cross rod, a second positioning cross rod, a tray, a test pull rod and a wiring terminal, wherein the hollow conduit and the test pull rod are arranged at intervals in parallel, the wiring terminal is arranged at the top end of the hollow conduit, the first magnetic induction element and the second magnetic induction element are arranged in the hollow conduit at intervals and are connected with the wiring terminal through signal wires, the first magnetic floating ball and the second magnetic floating ball are sleeved on the outer ring of the hollow conduit and lift along the hollow conduit, the positions of the first magnetic floating ball and the second magnetic floating ball on the hollow conduit correspond to the positions of the first magnetic induction element and the second magnetic induction element in the hollow conduit respectively, the two ends of the first positioning cross rod are sleeved in the hollow conduit and the test pull rod respectively and are positioned on the bottom surface of the first magnetic floating ball, the two ends of the second positioning cross rod are sleeved in the hollow conduit and the first magnetic floating ball through bolts, the two ends of the second positioning cross rod are sleeved in the first magnetic floating ball and the bottom surface through the second positioning cross rod and are fixed on the hollow guide rod through the second positioning cross rod;
When the first magnetic floating ball and the second magnetic floating ball are respectively close to the first magnetic induction element and the second magnetic induction element, the first magnetic induction element and the second magnetic induction element respectively output closed contact signals under the action of a magnetic field; when the first magnetic floating ball and the second magnetic floating ball leave the first magnetic induction element and the second magnetic induction element respectively, the first magnetic induction element and the second magnetic induction element are not influenced by an external magnetic field any more, and an open contact signal is output as an alarm signal; under the condition that the first magnetic floating ball and the second magnetic floating ball are in fault, the first magnetic induction element and the second magnetic induction element are not influenced by an external magnetic field any more, and an open contact signal is output as a fault signal.
2. The dual alarm point marine adjustable level alarm sensor of claim 1, wherein: the sensor further comprises a self-checking cross rod, wherein the self-checking cross rod is sleeved into the test pull rod and positioned between the second positioning cross rod and the second magnetic floating ball, and the self-checking cross rod is fixed on the test pull rod through a bolt, and the free end of the self-checking cross rod extends to the lower part of the bottom surface of the second magnetic floating ball.
3. The dual alarm point marine adjustable level alarm sensor according to claim 1 or 2, characterized in that: the first magnetic induction element and the second magnetic induction element are reed pipes.
4. A dual alarm point marine adjustable level alarm sensor according to claim 3, characterized in that: the sensor also comprises an operating handle, wherein the operating handle is arranged at the top end of the test pull rod.
5. A dual alarm point marine adjustable level alarm sensor according to claim 3, characterized in that: the sensor further comprises a protective shell, wherein the protective shell is arranged at the top ends of the hollow guide pipe and the test pull rod, and the wiring terminal is positioned in the protective shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710790043.8A CN109425413B (en) | 2017-09-05 | 2017-09-05 | Marine adjustable liquid level alarm sensor with double alarm points |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710790043.8A CN109425413B (en) | 2017-09-05 | 2017-09-05 | Marine adjustable liquid level alarm sensor with double alarm points |
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| Publication Number | Publication Date |
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| CN109425413A CN109425413A (en) | 2019-03-05 |
| CN109425413B true CN109425413B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710790043.8A Active CN109425413B (en) | 2017-09-05 | 2017-09-05 | Marine adjustable liquid level alarm sensor with double alarm points |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111232096A (en) * | 2020-03-31 | 2020-06-05 | 黄永锋 | Push rod sensor, undercarriage, self-checking method and automatic control method of undercarriage |
| CN113793484B (en) * | 2021-10-13 | 2022-11-22 | 中船澄西船舶修造有限公司 | Independent alarm sensor installation device for liquid cargo ship |
| CN114088166B (en) * | 2021-11-18 | 2024-04-30 | 东莞市西弗莱电子有限公司 | Oil level alarm switch |
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|---|---|---|---|---|
| KR20090022075A (en) * | 2007-08-29 | 2009-03-04 | 부산대학교 산학협력단 | Water level measuring instrument with float sensor defect diagnosis function |
| CN203629643U (en) * | 2013-11-04 | 2014-06-04 | 中电天威（北京）科技发展有限公司 | Anti-sticking liquid level sensor |
| CN105526995A (en) * | 2014-09-30 | 2016-04-27 | 江苏华豪航海电器有限公司 | Liquid level alarming sensor provided with self-checking device |
| CN207335826U (en) * | 2017-09-05 | 2018-05-08 | 上海融德机电工程设备有限公司 | The adjustable type liquid level warning sensor peculiar to vessel of double knock point |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4125262B2 (en) * | 2004-05-07 | 2008-07-30 | 矢崎総業株式会社 | Non-contact level sensor |
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- 2017-09-05 CN CN201710790043.8A patent/CN109425413B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090022075A (en) * | 2007-08-29 | 2009-03-04 | 부산대학교 산학협력단 | Water level measuring instrument with float sensor defect diagnosis function |
| CN203629643U (en) * | 2013-11-04 | 2014-06-04 | 中电天威（北京）科技发展有限公司 | Anti-sticking liquid level sensor |
| CN105526995A (en) * | 2014-09-30 | 2016-04-27 | 江苏华豪航海电器有限公司 | Liquid level alarming sensor provided with self-checking device |
| CN207335826U (en) * | 2017-09-05 | 2018-05-08 | 上海融德机电工程设备有限公司 | The adjustable type liquid level warning sensor peculiar to vessel of double knock point |
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