CN108987182A - A kind of protection type liquid-level switch for high-temperature boiler - Google Patents
A kind of protection type liquid-level switch for high-temperature boiler Download PDFInfo
- Publication number
- CN108987182A CN108987182A CN201810947839.4A CN201810947839A CN108987182A CN 108987182 A CN108987182 A CN 108987182A CN 201810947839 A CN201810947839 A CN 201810947839A CN 108987182 A CN108987182 A CN 108987182A
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- China
- Prior art keywords
- fixedly connected
- sleeve
- type liquid
- level switch
- protection type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
- H01H36/02—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding actuated by movement of a float carrying a magnet
Landscapes
- Level Indicators Using A Float (AREA)
Abstract
The invention discloses a kind of protection type liquid-level switches for high-temperature boiler, including terminal box, incoming line and connecting terminal, the incoming line perforation is connected to the upper end of terminal box, the connecting terminal is fixedly connected in the inner bottom wall of terminal box, the lower end of the terminal box is fixedly connected with sleeve, by the way that sliding shoe and the first ball is added, so that connecting rod held stationary and smooth during rising, it is not in the phenomenon that blocking, it greatly plays a protective role in this way, prevent liquid-level switch from also blocking and ineffective, to cause danger, by the way that ring frame is added, second magnet steel and floating plate, further play a protective role, when connecting rod is blocked, floating plate drives ring frame to rise at this time, and then drive the second magnet steel that the first magnet steel is sucked, achieve the effect that connect circuit alarm, the presence of air bag makes floating plate more It is good to be easy to float up, while sealing ring can play the role of sealing.
Description
Technical field
The present invention relates to liquid-level switch technical field, specially a kind of protection type liquid-level switch for high-temperature boiler.
Background technique
In power plant, in order to reduce energy loss, the high steam that a part did useful work is released, passes through one
A high-pressure heater comes heating boiler feed water or other heat exchangers, such as low-pressure heater, preheater, boiler feedwater temperature
Degree improves step by step, saves coal-fired or other energy substances, is a kind of effectively energy conservation measure.
How liquid level in high-pressure heater is monitored and controlled, the prior art particularly important to the safe operation of heater
Following liquidometer is mostly used to be monitored:
1, remote level indicator: non-continuous formula liquidometer with light beam or numeral method level value, and has switching value defeated
Out, for alarming.Its electrode is easy the liquid corrosion high by pH value, and then the failures such as occurs leaking, prison that cannot be safe and reliable
Liquid level variation is surveyed, field device safe operation is influenced.
2, magnetic turning plate formula liquidometer: showing liquid level in the form of magnetic turning plate and has switching value warning function.But high temperature and pressure shape
Floating body under state will be made very big and can just float, this brings two aspect problems, first is that float itself be easy to appear leakage or
Be flattened phenomenon, causes liquidometer that cannot work, and monitoring liquid level that cannot be safe and reliable changes, and influences field device and transports safely
Row；It on the other hand is that liquidometer volume itself will be made very huge, installation is inconvenient.
3, two-colour fluviograph: being only used for liquid level on the spot and show, without analog quantity or output switch parameter, cannot achieve interlocking
Control function.
And these water-level gauges are all a master switch, if switch occurs blocking or when poor contact, cannot be issued
Alarm, for this purpose, propose a kind of protection type liquid-level switch for high-temperature boiler, can double early warning, by be added float mechanism and
Contact mechanism, the two, which cooperates, increases the sensitivity of liquid-level switch.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, it the present invention provides a kind of protection type liquid-level switch for high-temperature boiler, overcomes existing
There is a deficiency of technology, design is rationally, compact-sized, by the mutual collaboration of float mechanism and contact mechanism mechanism, high sensitivity,
Reach good protective effect.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of protection type liquid-level switch for high-temperature boiler, including terminal box, incoming line and connecting terminal, the incoming line pass through
The logical upper end for being connected to terminal box, the connecting terminal are fixedly connected in the inner bottom wall of terminal box, the lower end of the terminal box
It is fixedly connected with sleeve；
Bindiny mechanism is connected in the sleeve, the bindiny mechanism includes connecting rod and sliding shoe, and the connecting rod activity is inserted
It connects in sleeve, the sliding shoe is fixedly attached on one section of side wall that connecting rod is located in sleeve；
One end that the connecting rod is located in sleeve is connected with contact mechanism, and the contact mechanism includes piston, piston rod and
One spring, the piston are fixedly connected with the connecting rod, and one end of the piston rod is fixedly connected on the upper end of piston, and described first
On the piston rod, one end of first spring is fixedly connected on piston spring wrap, and the other end of first spring is solid
Surely it is connected to the lower end of fixed block, the fixed block is fixedly connected on the inner sidewall of sleeve, is offered in the middle part of the fixed block
The lower end middle part of fixation hole, the fixed block offers the movable span communicated with fixation hole, and the other end of the piston rod runs through
Movable span simultaneously reaches in fixation hole, and one end side wall that the piston rod is located in mounting hole contradicts one end there are two pressure ram,
The other end of the pressure ram is fixedly connected with the first magnet steel, and pivot bush unit has limited block on two pressure rams, described
Limited block is fixedly connected on the inner sidewall of fixation hole, one section lateral wall of the compression bar between the first magnet steel and limited block
On be wound with second spring, one end of the second spring is fixedly connected on the side wall of limited block, two spring it is another
End is fixedly connected on the first magnet steel, and the static contact to match with the first magnet steel is fixedly connected on the inner sidewall of the sleeve.
Preferably, several rotation slots are offered on the side wall of the sliding shoe, and is rotatably connected in the rotation slot
One ball.
Preferably, float mechanism is connected on the lateral wall of the sleeve.
Preferably, the float mechanism includes ring frame, the second magnet steel and floating plate, and the ring frame is actively socketed on set
On the lateral wall of cylinder, second magnet steel is fixedly connected on the upper end of ring frame, and the floating plate is fixedly connected on ring frame
On inner sidewall.
Preferably, the sleeve, which is located on one section of lateral wall below ring frame, is fixedly attached restraining position ring block.
Preferably, the ring frame is rotatably connected to several the second balls on the inner sidewall of sleeve.
Preferably, air bag is inlaid in the floating plate.
Preferably, the lower end of the terminal box is fixedly connected with mounting blocks, and mounting blocks are fixedly attached to the outside of sleeve
On wall.
Preferably, the lower end of the mounting blocks is fixedly connected with sealing ring.
(3) beneficial effect
The embodiment of the invention provides a kind of protection type liquid-level switches for high-temperature boiler.Have it is following the utility model has the advantages that
1, by the way that sliding shoe and the first ball is added, so that connecting rod held stationary and smooth during rising, will not go out
The phenomenon that now blocking greatly plays a protective role in this way, prevents liquid-level switch from also blocking and ineffective, to cause to endanger
Danger.
2, it by the way that ring frame, the second magnet steel and floating plate is added, further plays a protective role, when connecting rod is blocked
When, floating plate drives ring frame to rise at this time, and then drives the second magnet steel that the first magnet steel is sucked, and reaches and connects circuit alarm
Effect.
3, the first magnet steel and the second magnet steel are samarium cobalt magnet, are not only conducted electricity very well, can be with high temperature resistant.
4, floating plate 903 made of high temperature resistant floatability silica gel not only can be with high temperature resistant, while cooperating air bag again, so that drift
Kickboard is more easier to float.
5, sealing ring can play the role of sealing, prevent steam and water in boiler operates in boiler from overflowing, with
Guarantee the pressure in boiler, so that the better tightness in boiler.
In conclusion passing through the mutual collaboration of float mechanism and contact mechanism mechanism, high sensitivity reaches good protection
Effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is appearance diagram of the present invention；
Fig. 2 is schematic structural view of the invention；
Fig. 3 is the portion A of the present invention structure enlargement diagram；
Fig. 4 is the portion B of the present invention structure enlargement diagram.
In figure: terminal box 1, incoming line 2, connecting terminal 3, mounting blocks 4, sleeve 5, float 6, bindiny mechanism 7, connecting rod
701, sliding shoe 702, the first ball 703, contact mechanism 8, piston 801, piston rod 802, the first spring 803, fixed block 804,
Limited block 805, pressure ram 806, the first magnet steel 807, second spring 808, static contact 809, float mechanism 9, ring frame 901,
Two magnet steel 902, floating plate 903, air bag 904, the second ball 905, stop collar 906, sealing ring 10.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Referring to attached drawing, a kind of protection type liquid-level switch for high-temperature boiler, including terminal box 1, incoming line 2 and terminals
Son 3, the incoming line 2 penetrate through the upper end for being connected to terminal box 1, and the connecting terminal 3 is fixedly connected on the inner bottom wall of terminal box 1
On, the lower end of the terminal box 1 is fixedly connected with sleeve 5；
Bindiny mechanism 7 is connected in the sleeve 5, the bindiny mechanism 7 includes connecting rod 701 and sliding shoe 702, the connection
701 activity of bar is plugged in sleeve 5, and the sliding shoe 702 is fixedly attached to one section of side wall that connecting rod 701 is located in sleeve 5
On；
One end that the connecting rod 701 is located in sleeve 5 is connected with contact mechanism 8, and the contact mechanism 8 includes piston 801, lives
Stopper rod 802 and the first spring 803, the piston 801 are fixedly connected with connecting rod 701, and one end of the piston rod 802 is fixed to be connected
It connects in the upper end of piston 801, first spring 803 is wrapped on piston rod 802, and one end of first spring 803 is fixed
It is connected on piston 801, the other end of first spring 803 is fixedly connected on the lower end of fixed block 804, the fixed block
804 are fixedly connected on the inner sidewall of sleeve 5, offer fixation hole in the middle part of the fixed block 804, under the fixed block 804
End middle part offers the movable span communicated with fixation hole, and the other end of the piston rod 802 through movable span and reaches fixation hole
Interior, one end side wall that the piston rod 802 is located in mounting hole contradicts one end there are two pressure ram 806, the pressure ram 806
The other end be fixedly connected with the first magnet steel 807, pivot bush unit has limited block 805, the limit on two pressure rams 806
Position block 805 is fixedly connected on the inner sidewall of fixation hole, and the compression bar 806 is between the first magnet steel 807 and limited block 805
Second spring 808 is wound on one section of lateral wall, one end of the second spring 808 is fixedly connected on the side wall of limited block 805
On, the other end of two spring 808 is fixedly connected on the first magnet steel 807, is fixedly connected on the inner sidewall of the sleeve 5
The static contact 809 to match with the first magnet steel 807, the first magnet steel 807 and the second magnet steel 902 are samarium cobalt magnet, not only electric conductivity
Can be good, it can be with high temperature resistant.
Several rotation slots are offered on the side wall of the sliding shoe 702, and the first rolling is rotatably connected in the rotation slot
Pearl 703, sliding shoe 702 maintains the balance of connecting rod 701, while cooperating the first ball 703, so that in entire connecting rod 701
It is very smooth during rising.
It is connected with float mechanism 9 on the lateral wall of the sleeve 5, the float mechanism 9 includes ring frame 901, the
Two magnet steel 902 and floating plate 903, floating plate 903 are made of high temperature resistant floatability silica gel, and the ring frame 901 is actively socketed on
On the lateral wall of sleeve 5, second magnet steel 902 is fixedly connected on the upper end of ring frame 901, and the floating plate 903 is fixed to be connected
It connects on the inner sidewall of ring frame 901, when reaching warning line, the second magnet steel 902 reaches exactly to be located at static contact 809 at this time
The same horizontal position, the second magnet steel 902 attracts the first magnet steel 807 at this time, and the first magnet steel 807 is caused to contact with static contact 809, from
And circuit is connected, extraneous alarm device sounds an alarm.
The sleeve 5, which is located on one section of lateral wall of 901 lower section of ring frame, is fixedly attached restraining position ring block 906, stop collar 906
When water level is not up to, position-limiting action is played, prevents ring frame 901 from sliding into bottom, is played a protective role to ring frame 901,
It prevents from ring frame 901 from sliding into lower section to block.
The ring frame 901 is rotatably connected to several the second balls 905, the second ball on the inner sidewall of sleeve 5
905 when ring frame 901 moves, and guarantees the fluency that ring frame 901 moves.
Air bag 904 is inlaid in the floating plate 903, air bag 904 can make floating plate 903 more preferably be easy to float up.
The lower end of the terminal box 1 is fixedly connected with mounting blocks 4, and mounting blocks 4 are fixedly attached to the lateral wall of sleeve 5
On, whole device is mounted on to the top of boiler by mounting blocks 4, it is convenient and efficient.
The lower end of the mounting blocks 4 is fixedly connected with sealing ring 10, and sealing ring 10 plays sealing function, so that in boiler
Water will not be overflowed with steam.
As shown in Figs 1-4, a kind of protection type liquid-level switch working principle for high-temperature boiler is as follows: through staff's tune
After examination, when the water in boiler constantly rises, float 6 can constantly rise to drive connecting rod due to buoyancy at this time
701 rise, and due to the presence of sliding shoe 702 and the first ball 703, entire connecting rod 701 is able to maintain during rising
It balances and smooth, connecting rod 701 drives piston rod 802 to move upwards during rising, when piston rod 802 moves to fixation hole
It is interior, and two pressure rams 806 are squeezed, cause two pressure rams 806 to move to mutually separate direction, when water level reaches warning line
When, pressure ram 806 just drives the first magnet steel 807 to contact with static contact 809 at this time, and circuit is connected, and extraneous alarm device issues
Alarm song；
When using overlong time, connecting rod 701 is likely to occur the phenomenon that gets stuck, and float 6 cannot drive in connecting rod 701 at this time
It rises, when during water level being begun to ramp up, due to buoyancy, floating plate 903 will drive the rising of ring frame 901, guard against when reaching
When water level, the second magnet steel 902 reaches exactly to be located at 809 the same horizontal position of static contact at this time, and the second magnet steel 902 attracts the at this time
One magnet steel 807 causes the first magnet steel 807 to contact with static contact 809, to connect circuit, extraneous alarm device is sounded an alarm.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of protection type liquid-level switch for high-temperature boiler, including terminal box, incoming line and connecting terminal, the incoming line
Perforation is connected to the upper end of terminal box, and the connecting terminal is fixedly connected in the inner bottom wall of terminal box, under the terminal box
End is fixedly connected with sleeve；
It is characterized by: being connected with bindiny mechanism in the sleeve, the bindiny mechanism includes connecting rod and sliding shoe, the company
Extension bar activity is plugged in sleeve, and the sliding shoe is fixedly attached on one section of side wall that connecting rod is located in sleeve；
One end that the connecting rod is located in sleeve is connected with contact mechanism, and the contact mechanism includes piston, piston rod and
One spring, the piston are fixedly connected with the connecting rod, and one end of the piston rod is fixedly connected on the upper end of piston, and described first
On the piston rod, one end of first spring is fixedly connected on piston spring wrap, and the other end of first spring is solid
Surely it is connected to the lower end of fixed block, the fixed block is fixedly connected on the inner sidewall of sleeve, is offered in the middle part of the fixed block
The lower end middle part of fixation hole, the fixed block offers the movable span communicated with fixation hole, and the other end of the piston rod runs through
Movable span simultaneously reaches in fixation hole, and one end side wall that the piston rod is located in mounting hole contradicts one end there are two pressure ram,
The other end of the pressure ram is fixedly connected with the first magnet steel, and pivot bush unit has limited block on two pressure rams, described
Limited block is fixedly connected on the inner sidewall of fixation hole, one section lateral wall of the compression bar between the first magnet steel and limited block
On be wound with second spring, one end of the second spring is fixedly connected on the side wall of limited block, two spring it is another
End is fixedly connected on the first magnet steel, and the static contact to match with the first magnet steel is fixedly connected on the inner sidewall of the sleeve.
2. a kind of protection type liquid-level switch for high-temperature boiler according to claim 1, it is characterised in that: the sliding
Several rotation slots are offered on the side wall of block, and the first ball is rotatably connected in the rotation slot.
3. a kind of protection type liquid-level switch for high-temperature boiler according to claim 1, it is characterised in that: the sleeve
Lateral wall on be connected with float mechanism.
4. a kind of protection type liquid-level switch for high-temperature boiler according to claim 3, it is characterised in that: the floating
Mechanism includes ring frame, the second magnet steel and floating plate, and the ring frame is actively socketed on the lateral wall of sleeve, second magnetic
Steel is fixedly connected on the upper end of ring frame, and the floating plate is fixedly connected on the inner sidewall of ring frame.
5. a kind of protection type liquid-level switch for high-temperature boiler according to claim 4, it is characterised in that: the sleeve
Restraining position ring block is fixedly attached on one section of lateral wall below ring frame.
6. a kind of protection type liquid-level switch for high-temperature boiler according to claim 4, it is characterised in that: the annular
Frame is rotatably connected to several the second balls on the inner sidewall of sleeve.
7. a kind of protection type liquid-level switch for high-temperature boiler according to claim 4, it is characterised in that: the floating
Air bag is inlaid in plate.
8. a kind of protection type liquid-level switch for high-temperature boiler according to claim 1, it is characterised in that: the wiring
The lower end of box is fixedly connected with mounting blocks, and mounting blocks are fixedly attached on the lateral wall of sleeve.
9. a kind of protection type liquid-level switch for high-temperature boiler according to claim 8, it is characterised in that: the installation
The lower end of block is fixedly connected with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947839.4A CN108987182B (en) | 2018-08-20 | 2018-08-20 | A kind of protection type liquid-level switch for high-temperature boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947839.4A CN108987182B (en) | 2018-08-20 | 2018-08-20 | A kind of protection type liquid-level switch for high-temperature boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108987182A true CN108987182A (en) | 2018-12-11 |
| CN108987182B CN108987182B (en) | 2019-07-09 |
Family
ID=64553541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810947839.4A Active CN108987182B (en) | 2018-08-20 | 2018-08-20 | A kind of protection type liquid-level switch for high-temperature boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108987182B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724676A (en) * | 2019-02-23 | 2019-05-07 | 苏州市宏宇环境科技股份有限公司 | A kind of floodometer improving measurement accuracy |
| CN110274664A (en) * | 2019-06-25 | 2019-09-24 | 中建八局第一建设有限公司 | A kind of Pasteur's measuring tank Inlet and outlet water level calibration tool |
| CN110470347A (en) * | 2019-09-12 | 2019-11-19 | 骆金富 | A kind of pipeline real-time device with Yu Haiyang's steamer air-conditioning system |
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| CN201285734Y (en) * | 2008-10-13 | 2009-08-05 | 浙江三花股份有限公司 | Liquid level switch |
| CN203434084U (en) * | 2013-07-11 | 2014-02-12 | 武汉海德龙仪表科技有限公司 | Submersed type liquid level switch |
| CN206505867U (en) * | 2017-02-09 | 2017-09-19 | 大连美天三有电子仪表有限公司 | A kind of TR floating-ball level switch |
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| JP2003016893A (en) * | 2001-06-28 | 2003-01-17 | Asa Denshi Kogyo Kk | Semiconductor switch with probe |
| CN201285734Y (en) * | 2008-10-13 | 2009-08-05 | 浙江三花股份有限公司 | Liquid level switch |
| CN203434084U (en) * | 2013-07-11 | 2014-02-12 | 武汉海德龙仪表科技有限公司 | Submersed type liquid level switch |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724676A (en) * | 2019-02-23 | 2019-05-07 | 苏州市宏宇环境科技股份有限公司 | A kind of floodometer improving measurement accuracy |
| CN109724676B (en) * | 2019-02-23 | 2024-02-27 | 苏州市宏宇环境科技股份有限公司 | Water level measuring instrument for improving measuring accuracy |
| CN110274664A (en) * | 2019-06-25 | 2019-09-24 | 中建八局第一建设有限公司 | A kind of Pasteur's measuring tank Inlet and outlet water level calibration tool |
| CN110274664B (en) * | 2019-06-25 | 2024-04-16 | 中建八局第一建设有限公司 | Water inlet and outlet water level calibration tool for pasteurization tank |
| CN110470347A (en) * | 2019-09-12 | 2019-11-19 | 骆金富 | A kind of pipeline real-time device with Yu Haiyang's steamer air-conditioning system |
| CN110470347B (en) * | 2019-09-12 | 2021-12-17 | 上海旗浪节能环保科技有限公司 | A pipeline real-time supervision device for ocean steamer air conditioning system |
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|---|---|
| CN108987182B (en) | 2019-07-09 |
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Effective date of registration: 20221230 Address after: No. 29, Jingba Road, Chuzhou Hi tech Industrial Development Zone, Tianchang, Chuzhou, Anhui 239300 Patentee after: Anhui Tianmeng Instrument Group Co.,Ltd. Address before: 239300 west of Jingba road and north of Weisan Road, Tianchang Economic Development Zone, Chuzhou City, Anhui Province Patentee before: TIANCHANG RUIDA INSTRUMENT CABLE MATERIAL FACTORY |
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