CN203456380U - Flow switch - Google Patents
Flow switch Download PDFInfo
- Publication number
- CN203456380U CN203456380U CN201320556647.3U CN201320556647U CN203456380U CN 203456380 U CN203456380 U CN 203456380U CN 201320556647 U CN201320556647 U CN 201320556647U CN 203456380 U CN203456380 U CN 203456380U
- Authority
- CN
- China
- Prior art keywords
- flow
- switch
- flow switch
- turnover panel
- hinge turnover
- 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.)
- Expired - Fee Related
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- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Measuring Volume Flow (AREA)
Abstract
The utility model discloses a flow switch, and specifically relates to a flow switch for micro flow control and alarm. The utility model solves the problems that the conventional flow switch has many movable components, and the repeatability of the alarm point is poor. The flow switch comprises a casing and a hinge turnover plate arranged inside the casing. A magnetic steel is arranged on the hinge turnover plate. A magnetic switch is disposed on the external of the casing. When the magnetic steel deflects with the hinge turnover plate, the contacts of the magnetic switch operate. By adopting the structure, the flow switch provided by the utility model has the advantages of simple structure, stable performance and low alarm flow point, meeting the special requirements of the nuclear power market; besides, the flow switch has various mounting methods, and the switch alarm contacts has good reliability and repeatability.
Description
Technical field
The utility model relates to a kind of switch of fluid flow control field, is specifically related to a kind of tiny flow quantity and controls the flow switch of reporting to the police.
Background technology
Flow switch is a kind ofly can send to closed conduit fluid metered flow the flow control instrument of control, warning node signal.Be mainly used in cooling, the lubricating system of nuclear power fire-fighting system, main equipment, realize the control, supervision, safety interlocking of fluid flow etc., to guarantee the safe operation of equipment, steady production flow process, the automatic controlling level that improves.Current flow switch both domestic and external mainly contains float-type and Flapper type.When fluid enters after housing, along with the increase of flow, float rises, baffle plate turning, drives magnet steel fixing on float and baffle plate to rise, when being raised to certain position, two outer steel couplings with external alert part, swing magnet steel frame, press sensitive switch switching and send contact point signal.Because movable piece is too much, make alarm point poor repeatability, the structures shape of transducer the flow alarm point of transducer can not be too little, can only reach more than 6% could reporting to the police of flow higher limit.
Utility model content
The technical problems to be solved in the utility model is that current flow switch movable piece is too much, alarm point poor repeatability, the flow switch that provides a kind of tiny flow quantity simple in structure, stable performance to report to the police.。
For achieving the above object, the utility model adopts following technical proposals: a kind of flow switch, the hinge turnover panel that comprises housing and be positioned at housing, on described hinge turnover panel, be provided with magnet steel, outer setting magnetic switch at housing, when magnet steel deflects with hinge turnover panel, the action of the contact of magnetic switch.
On described hinge turnover panel, be provided with locating part.
Described locating part is a circular abutment.
Described hinge turnover panel rotates around the axis.
Described housing is Stainless Steel Shell.
Adopt the utility model after said structure, simple in structure, stable performance, warning flow point is little, can meet the specific (special) requirements in nuclear power market; Mounting means is various, can level installs, also can at right angle setting; Movable member is few, and switch alarm actuating contact is reliable; Type of attachment is that flange connects, easy for installation, is convenient to meet customer requirements; Reproducible, can reach 2%; Output contact capacity is large: 250V ac/dc, 1A, 50VA; Housing is stainless steel, the flow control system of the medium that can be used for being corrosive.Medium does not communicate with conversion portion, is convenient to the sealing of pipeline.
Accompanying drawing explanation
Fig. 1 is the horizontal mounting structure schematic diagram of the utility model.
Fig. 2 is the utility model phase with vertical installation schematic diagram.
Embodiment
As depicted in figs. 1 and 2, the hinge turnover panel 3 that the utility model comprises housing 1 and is positioned at housing 1, is provided with magnet steel on described hinge turnover panel 3, at the outer setting magnetic switch 2 of housing 1, and when magnet steel deflects with hinge turnover panel 3, the action of the contact of magnetic switch 2; On described hinge turnover panel 3, be provided with locating part 4; Described locating part 4 is circular abutments, its can limit switch hinge turnover panel 3 folding angles, be convenient to reset, particularly during at right angle setting, after hinge turnover panel 3 is fully opened, do not have locating part 4 just can not return home position; Described hinge turnover panel 35 rotates around the shaft.When the hinge turnover panel 3 perpendicular to fluid is subject to after fluid thrust, hinge turnover panel 3 deflects, and deflection angle size is relevant with uninterrupted, when hinge turnover panel 3 deflects into certain angle, magnet steel on turnover panel makes the magnetic switch 2 contact actions of outside, flow switch output break-make control signal.Flow alarm point can be adjusted by calibration equipment.
Described housing 1 is Stainless Steel Shell, the flow control system of the medium that can be used for being corrosive.
Below the course of work of the present utility model is summarized as follows:
As depicted in figs. 1 and 2: flow switch is installed on pipeline, B is to being water (flow) direction, when having fluid to pass through housing 1, fluid can promote hinge turnover panel 35 counterclockwise rotations around the shaft, when flow reaches setting alarm point, the magnet steel on hinge turnover panel 3 drives the magnetic switch 2 contacts actions of housing 1 outside, sends break-make alarm signal, along with flow increases, magnetic switch 2 keeps the state of existing on-off always.When flow reduces, locating part 4 resets hinge turnover panel 3 under Action of Gravity Field, and when flow is less than setting alarm point, move again magnetic switch 2 contacts, removes and report to the police.
Claims (5)
1. a flow switch, the hinge turnover panel (3) that comprises housing (1) and be positioned at housing (1), it is characterized in that: on described hinge turnover panel (3), be provided with magnet steel, outer setting magnetic switch (2) at housing (1), when magnet steel deflects with hinge turnover panel (3), the action of the contact of magnetic switch (2).
2. flow switch according to claim 1, is characterized in that: on described hinge turnover panel (3), be provided with locating part (4).
3. flow switch according to claim 2, is characterized in that: described locating part (4) is a circular abutment.
4. flow switch according to claim 1, is characterized in that: described hinge turnover panel (3) around the shaft (5) rotates.
5. flow switch according to claim 1, is characterized in that: described housing (1) is Stainless Steel Shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556647.3U CN203456380U (en) | 2013-09-09 | 2013-09-09 | Flow switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556647.3U CN203456380U (en) | 2013-09-09 | 2013-09-09 | Flow switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456380U true CN203456380U (en) | 2014-02-26 |
Family
ID=50136238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320556647.3U Expired - Fee Related CN203456380U (en) | 2013-09-09 | 2013-09-09 | Flow switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203456380U (en) |
-
2013
- 2013-09-09 CN CN201320556647.3U patent/CN203456380U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20210909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |