CN109461622A - Magneto-electric wind pressure detection switch - Google Patents
Magneto-electric wind pressure detection switch Download PDFInfo
- Publication number
- CN109461622A CN109461622A CN201811179629.1A CN201811179629A CN109461622A CN 109461622 A CN109461622 A CN 109461622A CN 201811179629 A CN201811179629 A CN 201811179629A CN 109461622 A CN109461622 A CN 109461622A
- Authority
- CN
- China
- Prior art keywords
- conduit
- magnet ring
- limit stopper
- magneto
- detection switch
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
-
- 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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a kind of magneto-electric wind pressure detection switch, including hollow conduit, conduit top is provided with limit stopper, conduit lower part is provided with releasable securing apparatus, catheter jacket is equipped with barge board and the magnet ring above barge board, barge board and magnet ring are located between clamp device and limit stopper, it can axially be moved between clamp device and limit stopper along conduit, magnetic dry-reed switch is provided in duct cavity at limit stopper, the electrode of magnetic dry-reed switch is connect by signal wire with monitoring system.The wind pressure generated when using fan operation pushes wind deflector that magnet ring is driven to move up and down, so that magnetic dry-reed is closed the switch or is disconnected using magnetic force induction, and switch state signal is transmitted to monitoring system by signal wire, realizes the monitoring to blower working condition.The present invention has many advantages, such as that structure is simple, reliable performance, cheap and easy for installation, the on-line monitoring of particularly suitable cooling fan operation state, with the prospect promoted and applied.
Description
Technical field
The present invention relates to wind pressure detection technique fields, and in particular to a kind of magneto-electric wind pressure detection switch.
Background technique
In many large scale equipments, using blower air blast cooling heat dissipation be it is a kind of it is relatively conventional by the way of, blower it is normal
Work is directly concerning the safe and stable operation for arriving entire large scale equipment.How the working condition of real-time detection blower, general place
Reason mode is completed using Steam Pressure switch or mechanical trip switch, when blower surprisingly stall or revolving speed reduction, is caused cold
But deficiency in draught or when can not cool down, can prompt or alarm in time.
There are some problems in existing blast switch: 1) since Steam Pressure switch is a kind of pipeline pressure in use
The measurement method of difference, mounting means are complicated, need to connect the import and export pipeline, form inlet and outlet pressure difference to measure wind pressure, for
The case where this system lock of cooling fan is poor, pressure difference very little is easy malfunction, and effect is less desirable；2) using travel switch with
The blast switch when machinery that wind deflector combines, there are travel switch contact arm is long, wind deflector sole mass weight, blower vibration in operation
Dynamic the case where also be easy to causeing malfunction, and the deficiency that mechanical switch is easily damaged.
Summary of the invention
In view of the deficiencies in the prior art, present invention solves the technical problem that are as follows: how to optimize existing blast switch
Structure, while reducing production cost, improve fan condition detection reliability.
To achieve the above objectives, a kind of magneto-electric wind pressure detection switch provided by the invention, including hollow conduit, conduit
Top is provided with limit stopper, and conduit lower part is provided with releasable securing apparatus, and catheter jacket is equipped with barge board and is located at shelves
Magnet ring above aerofoil, barge board and magnet ring are located between clamp device and limit stopper, can be axial in clamp device along conduit
It is moved between limit stopper, is provided with magnetic dry-reed switch in duct cavity at limit stopper.
Based on the above technical solution, the catheter jacket be equipped with reset spring, reset spring both ends respectively with limit
Position stopper is connected with magnet ring.
Based on the above technical solution, the reset spring both ends are fixedly connected with limit stopper and magnet ring respectively,
Magnet ring is fixedly connected with wind deflector, and in initial position, the pulling force of reset spring is equal to the gravity of limit stopper and magnet ring.
Based on the above technical solution, the limit stopper bottom is fixedly installed pressure sensor, limits stopper
It is fixedly connected by pressure sensor with reset spring, the value of thrust or pressure of pressure sensor detection limit stopper and reset spring
Force value.
Based on the above technical solution, pressure-strain piece is provided at the top of the clamp device.
Based on the above technical solution, vibrating sensor is provided at the top of the clamp device.
Based on the above technical solution, the wind deflector is reclinate arc panel or conical plate.
Based on the above technical solution, the edge of the wind deflector is provided with downward wind deflector, wind deflector with
The angle of wind deflector is more than or equal to 90 degree, and is less than 180 degree.
Based on the above technical solution, the clamp device includes two spiral shells connecting with the lower thread of conduit
Mother, two nuts are located at the two sides of mounting plate.
Based on the above technical solution, the conduit is made of tempered glass or transparent plastic；Magnet ring uses neodymium
Iron boron magnets are made.
Compared with the prior art, the advantages of the present invention are as follows:
1) wind pressure generated when utilizing fan operation pushes wind deflector that magnet ring is driven to move up and down, utilizes magnetic force induction
So that magnetic dry-reed is closed the switch or is disconnected, switch state signal is transmitted to by monitoring system by signal wire, realizes and works blower
The monitoring of state；A kind of safety guard that detection switch is operated normally as blower has structure simple, reliable performance,
The advantages that cheap and easy for installation, is particularly suitable for the on-line monitoring of cooling fan operation state, can intuitively reflect wind
The normal condition or malfunction of machine operation, have the prospect promoted and applied；
2) upward pulling force is generated in initial position to magnet ring using reset spring, reset spring is to magnet ring in limit stopper
Downward elastic force is generated, at blower starting or failure initial stage, detection switch is can be reduced and nonserviceables between working condition
Switching time can reflect the working condition of blower in time, and then improve the sensitivity of detection switch；
3) position for being detected barge board or magnet ring indirectly using pressure sensor, pressure-strain piece or vibrating sensor, is used
It is combined in the operating status of auxiliary monitoring blower, and with the signal of magnetic dry-reed switch, the operation convenient for monitoring system to blower
State makes more accurate judgement, improves the reliability of fan condition detection, avoids the wrong report to fan operation state.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of embodiment 1 and 9 in the present invention.
Fig. 2 is the schematic view of the front view of embodiment 2 and 3 in the present invention.
Fig. 3 is the schematic view of the front view of embodiment 4 in the present invention.
Fig. 4 is the schematic view of the front view of embodiment 5 and 7 in the present invention.
Fig. 5 is the schematic view of the front view of embodiment 6 and 8 in the present invention.
In figure: 1- magnet ring, 2- conduit, 3- limit stopper, 4- magnetic dry-reed switch, 5- barge board, 6- clamp device, 7- signal
Line, 8- mounting plate, 9- pressure sensor, 10- reset spring, 11- pressure-strain piece, 12- wind deflector, 13- vibrating sensor.
Specific embodiment
Used term " on " in the present invention refer in detection switch from clamp device to limit stopper direction,
"lower" refers to from limit stopper to the direction of clamp device in detection switch, below in conjunction with attached drawing to the embodiment of the present invention make into
One step is described in detail.
Embodiment 1: shown in Figure 1, a kind of magneto-electric wind pressure detection switch is led including the hollow conduit 2 being vertically arranged
2 upper end of pipe is provided with limit stopper 3, and 2 lower end of conduit is provided with releasable securing apparatus 6, will be led by clamp device 6
Pipe 2 is detachably secured to blower on the mounting plate 8 in (out) air port, and the central axes of conduit 2 are parallel with into (out) wind direction.
Barge board 5 and the magnet ring 1 above barge board 5 are arranged with outside conduit 2, barge board 5 and magnet ring 1 are located at fastening dress
It sets between 6 and limit stopper 3, can axially be moved between clamp device 6 and limit stopper 3 along conduit 2.It is leaned in 2 cavity of conduit
Magnetic dry-reed switch 4 (magnetic dry-reed switch is the prior art) is provided at nearly limit stopper 3, the electrode of magnetic dry-reed switch 4 passes through letter
Number line 7 is drawn from 2 one end of conduit, switch state signal is transmitted to monitoring system by signal wire 7, for monitoring the fortune of blower
Row state.
When blower works normally, the wind pressure that blower generates drives wind deflector and magnet ring 1 to move along conduit 2 to limit stopper 3
It is dynamic, 3 vicinity of stopper is limited when magnet ring 1 is moved to, promotes the magnetic dry-reed switch 4 inside conduit 2 to close in the magneticaction of magnet ring 1
It closes；When blower surprisingly stalls or revolving speed reduces, wind deflector and magnet ring 1 return to initial position under the effect of gravity, and magnet ring 1 is far from magnetic
Dry reed switch 4, magneticaction disappear or weaken, and magnetic dry-reed switch 4 disconnects.
A kind of safety guard that detection switch is operated normally as cooling blower, generates when using fan operation
Wind pressure, push wind deflector 5 that magnet ring 1 is driven to move up and down, make 4 closing or opening of magnetic dry-reed switch using magnetic force induction, it is logical
It crosses signal wire 7 and switch state signal is transmitted to monitoring system, to realize the monitoring to blower working condition.The embodiment of the present invention
Have many advantages, such as that structure is simple, it is reliable performance, cheap and easy for installation, it is particularly suitable for cooling fan operation state
On-line monitoring, convenient for intuitively reflecting the normal condition or malfunction of fan operation.
Embodiment 2: it is on the basis of embodiment 1, shown in Figure 2, it is arranged with reset spring 10 outside the conduit 2, it is multiple
Position 10 both ends of spring are connect with limit stopper 3 and magnet ring 1 respectively, for wind deflector and magnet ring 1 to be returned to initial position in time.
During actual test, when blower causes revolving speed to reduce because of accident or failure, wind deflector and magnet ring 1 are only in weight
Power acts on lower return not in time, fails the malfunction for reflecting fan operation in time.In view of this, when blower works normally,
The wind pressure that blower generates drives wind deflector and magnet ring 1 to move along conduit 2 to limit stopper 3, and reset spring 10 is compressed；Work as blower
Unexpected stalling or revolving speed reduce, and wind deflector, magnet ring 1 can return to initial position in time under the collective effect of elastic force and gravity, subtract
The state of major general's blower is switched to the lag time of malfunction, convenient for reflecting the working condition of blower in time, to improve detection
The sensitivity of switch.
Embodiment 3: it is shown in Figure 2 on the basis of embodiment 2,10 both ends of reset spring respectively with limiting block
First 3 are fixedly connected with magnet ring 1, and magnet ring 1 is fixedly connected with wind deflector, and in initial position, and reset spring 10, which is in, to be stretched
State, the pulling force of reset spring 10 are equal to the gravity of limit stopper 3 and magnet ring 1.
During actual test, even if blower normally starts, but when initial start stage is lower because of revolving speed, blower is generated
Wind pressure be also not enough to drive wind deflector and magnet ring 1 that gravity, spring force is overcome to slide along conduit 2 to limit stopper 3, wind deflector
Initial position is remained in magnet ring 1, leads to fail the normal condition for reflecting fan operation in time.
In view of this, reset spring 10 is in tensional state, and the pulling force of reset spring 10 is equal in initial position
Limit the gravity of stopper 3 and magnet ring 1.Although blower is lower in the revolving speed of initial start stage, lesser wind pressure can also break reset bullet
The equilibrium state of spring 10 and limit stopper 3 and magnet ring 1 drives wind deflector and magnet ring 1 to slide along conduit 2 to limit stopper 3.With
Rotation speed of fan steps up, and the wind pressure that blower generates drives wind deflector and magnet ring 1 that gravity, spring force is overcome to continue along conduit
2 slide to limit stopper 3, reduce the lag time that the state of blower is switched to operating status, can reflect the fortune of blower in time
Row state, and then improve the sensitivity of detection switch.
Embodiment 4: shown in Figure 3 on the basis of embodiment 3,3 bottom of limit stopper is fixedly installed pressure
Sensor 9, limit stopper 3 are fixedly connected by pressure sensor 9 with reset spring 10, and pressure sensor 9 is for detecting limit
The value of thrust or pressure value of stopper 3 and reset spring 10, and will test signal and be transmitted to monitoring system, it is used for auxiliary monitoring blower
Operating status.
In the present embodiment, it pre-defines pressure sensor 9 and detects that value of thrust is negative value, pressure sensor 9 detects
Pressure value is positive value.While monitoring system receives the closure signal of magnetic dry-reed switch 4, detected by pressure sensor 9
It is the pressure (or greater than certain pressure value) of positive value, just determines that the operating status of cooling blower is normal condition；When
It is the pulling force of negative value while monitoring system receives the cut-off signal of magnetic dry-reed switch 4, detected by pressure sensor 9
(or less than certain value of thrust) just determines that the operating status of cooling blower is malfunction.It is examined using pressure sensor 9
The active force (type or size) between limit stopper 3 and reset spring 10 is surveyed, and is combined with the signal of magnetic dry-reed switch 4,
More accurate judgement is made convenient for operating status of the monitoring system to blower, improves the reliability of fan condition detection, is avoided pair
The wrong report of fan operation state.
Embodiment 5: on the basis of embodiment 1, shown in Figure 4, the top of the clamp device 6 is provided with pressure and answers
Become piece 11, for detecting the pressure value of wind deflector Yu clamp device 6, and will test signal and be transmitted to monitoring system, for assisting
Monitor the operating status of blower.
While monitoring system receives the closure signal of magnetic dry-reed switch 4, pressure detected by pressure-strain piece 11
Force value is less than preset value (can be preset as zero), just determines that the operating status of cooling blower is normal condition；Work as monitoring system
While receiving the cut-off signal of magnetic dry-reed switch 4, pressure value detected by pressure-strain piece 11 is greater than preset value (can be pre-
It is set as zero), just determines that the operating status of cooling blower is malfunction.Using the detection wind deflector of pressure-strain piece 11 and tightly
Be fixedly mounted with set 6 pressure size (be equivalent to and judge whether survey wind deflector is located at initial position indirectly), and the letter with magnetic dry-reed switch 4
It number combines, makes more accurate judgement convenient for operating status of the monitoring system to blower, improve the reliable of fan condition detection
Property, avoid the wrong report to fan operation state.
Embodiment 6: on the basis of embodiment 1, shown in Figure 5, the top of the clamp device 6 is provided with multiple vibrations
Dynamic sensor 13 for detecting the vibration values at 6 top of clamp device, and will test signal and be transmitted to monitoring system, for assisting
Monitor the operating status of blower.
When blower surprisingly stalls or revolving speed reduces, wind deflector and magnet ring 1 drop to the top of clamp device 6 under the effect of gravity
Portion, and collide with the top of clamp device 6, vibrating sensor 13 can detect the vibration peak of collision moment, and will test
Signal is transmitted to monitoring system.While monitoring system receives the cut-off signal of magnetic dry-reed switch 4,13 institute of vibrating sensor
The vibration values detected are greater than preset value (slightly larger than the vibration values of background noise), just determine the operating status of cooling blower
For malfunction.It (is equivalent to judgement indirectly using the magnitude of vibrations that vibrating sensor 13 detects 6 top of clamp device and surveys wind deflector
Whether initial position is returned to), and combined with the signal of magnetic dry-reed switch 4, make convenient for malfunction of the monitoring system to blower
More accurately judgement out, improves the reliability of fan condition detection, avoids the wrong report to fan operation state.
Embodiment 7: it is on the basis of embodiment 1, shown in Figure 4, the wind deflector be reclinate arc panel or
Conical plate, convenient for upward air-flow in wind deflector with conduit 2 for center dipoles, the wind deflector stress of arc or taper is more
Equilibrium is conducive to improve the stationarity that barge board 5 is moved axially along conduit 2, and then promotes the reliability of detection switch.
Embodiment 8: on the basis of embodiment 1, shown in Figure 5, the edge of the wind deflector is provided with downward
The angle of wind deflector 12, wind deflector 12 and wind deflector is more than or equal to 90 degree, and is less than 180 degree.Pass through downward 12 energy of wind deflector
Assemble upward air-flow uniformly in wind deflector, is conducive to improve the stationarity that barge board 5 is moved axially along conduit 2, in turn
Promote the reliability of detection switch.
Embodiment 9: shown in Figure 1 on the basis of embodiment 1-8 any embodiment, the clamp device 6 includes two
A nut with internal thread hole, two nuts are located at the two sides of mounting plate 8, and connect with the lower thread of conduit 2, in turn
Switch will be will test to be detachably secured on mounting plate 8, facilitate installation or maintenance.
Embodiment 10: on the basis of embodiment 1-8 any embodiment, the conduit 2 uses tempered glass or transparent modeling
Material is made；Magnet ring 1 is made of ndfeb magnet (strong magnets).Using conduit 2 made of tempered glass or transparent plastic, just
The routine inspection of magnetic dry-reed switch 4 in conduit 2, can estimate magnetic dry-reed switch 4 by mobile magnet ring 1 be closed or break
It opens, reduces the difficulty and cost of routine inspection.The size and again of magnet ring can be greatly reduced using magnet ring 1 made of ndfeb magnet
Amount substantially reduces the size of detection switch to reduce the size and weight of wind deflector.
The present invention is not only limited to above-mentioned preferred forms, anyone can show that other are each under the inspiration of the present invention
The product of kind form, however, make any variation in its shape or structure, it is all with identical or similar with the present invention
Technical solution, within its protection scope.The content being not described in detail in this specification belongs to this field professional technique people
The prior art well known to member.
Claims (10)
1. a kind of magneto-electric wind pressure detection switch, including hollow conduit (2), it is characterised in that: the setting of conduit (2) top is limited
Position stopper (3), conduit (2) lower part are provided with releasable securing apparatus (6), are arranged with barge board (5) outside conduit (2) and are located at
Magnet ring (1) above barge board (5), barge board (5) and magnet ring (1) are located between clamp device (6) and limit stopper (3), can
It is axially moved between clamp device (6) and limit stopper (3) along conduit (2), close to limit stopper (3) in conduit (2) cavity
Place is provided with magnetic dry-reed switch (4).
2. magneto-electric wind pressure detection switch as described in claim 1, it is characterised in that: be arranged with reset outside the conduit (2)
Spring (10), reset spring (10) both ends are connect with limit stopper (3) and magnet ring (1) respectively.
3. magneto-electric wind pressure detection switch as claimed in claim 2, it is characterised in that: reset spring (10) the both ends difference
It is fixedly connected with limit stopper (3) and magnet ring (1), magnet ring (1) is fixedly connected with wind deflector, and in initial position, resets bullet
The pulling force of spring (10) is equal to the gravity of limit stopper (3) and magnet ring (1).
4. magneto-electric wind pressure detection switch as claimed in claim 3, it is characterised in that: limit stopper (3) bottom is fixed
It is provided with pressure sensor (9), limit stopper (3) is fixedly connected by pressure sensor (9) with reset spring (10), and pressure passes
The value of thrust or pressure value of sensor (9) detection limit stopper (3) and reset spring (10).
5. magneto-electric wind pressure detection switch as described in claim 1, it is characterised in that: set at the top of the clamp device (6)
It is equipped with pressure-strain piece (11).
6. magneto-electric wind pressure detection switch as described in claim 1, it is characterised in that: set at the top of the clamp device (6)
It is equipped with vibrating sensor (13).
7. magneto-electric wind pressure detection switch as described in claim 1, it is characterised in that: the wind deflector is reclinate arc
Shape plate or conical plate.
8. magneto-electric wind pressure detection switch as described in claim 1, it is characterised in that: the edge of the wind deflector is provided with
The angle of downward wind deflector (12), wind deflector (12) and wind deflector is more than or equal to 90 degree, and is less than 180 degree.
9. such as the described in any item magneto-electric wind pressure detection switch of claim 1-8, it is characterised in that: the clamp device (6)
The nut connecting with the lower thread of conduit (2) including two, two nuts are located at the two sides of mounting plate (8).
10. such as the described in any item magneto-electric wind pressure detection switch of claim 1-8, it is characterised in that: the conduit (2) uses
Tempered glass or transparent plastic are made；Magnet ring (1) is made of ndfeb magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811179629.1A CN109461622A (en) | 2018-10-10 | 2018-10-10 | Magneto-electric wind pressure detection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811179629.1A CN109461622A (en) | 2018-10-10 | 2018-10-10 | Magneto-electric wind pressure detection switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109461622A true CN109461622A (en) | 2019-03-12 |
Family
ID=65607489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811179629.1A Pending CN109461622A (en) | 2018-10-10 | 2018-10-10 | Magneto-electric wind pressure detection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109461622A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550927A (en) * | 2021-09-01 | 2021-10-26 | 镇江市丹徒区粮机厂有限公司 | Visual industrial fan of wind speed |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1544408A (en) * | 1967-01-07 | 1968-10-31 | Porsche Kg | Dual-circuit brake system with electrical warning device |
| CA2286966A1 (en) * | 1999-10-20 | 2001-04-20 | Henlex Inc. | Differential pressure triggering device |
| CN2840308Y (en) * | 2005-09-14 | 2006-11-22 | 志鼎资讯股份有限公司 | Integrated formed magnetic spring liquid level switch |
| CN103646821A (en) * | 2013-12-04 | 2014-03-19 | 佛山市顺德区奇林电气有限公司 | Magnetic reed pipe conductive wind-pressure switch |
| CN104332354A (en) * | 2014-10-16 | 2015-02-04 | 佛山市美的清湖净水设备有限公司 | Flow switch |
-
2018
- 2018-10-10 CN CN201811179629.1A patent/CN109461622A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1544408A (en) * | 1967-01-07 | 1968-10-31 | Porsche Kg | Dual-circuit brake system with electrical warning device |
| CA2286966A1 (en) * | 1999-10-20 | 2001-04-20 | Henlex Inc. | Differential pressure triggering device |
| CN2840308Y (en) * | 2005-09-14 | 2006-11-22 | 志鼎资讯股份有限公司 | Integrated formed magnetic spring liquid level switch |
| CN103646821A (en) * | 2013-12-04 | 2014-03-19 | 佛山市顺德区奇林电气有限公司 | Magnetic reed pipe conductive wind-pressure switch |
| CN104332354A (en) * | 2014-10-16 | 2015-02-04 | 佛山市美的清湖净水设备有限公司 | Flow switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550927A (en) * | 2021-09-01 | 2021-10-26 | 镇江市丹徒区粮机厂有限公司 | Visual industrial fan of wind speed |
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Application publication date: 20190312 |
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