CN101216336A - Flow detector - Google Patents
Flow detector Download PDFInfo
- Publication number
- CN101216336A CN101216336A CNA2007101145671A CN200710114567A CN101216336A CN 101216336 A CN101216336 A CN 101216336A CN A2007101145671 A CNA2007101145671 A CN A2007101145671A CN 200710114567 A CN200710114567 A CN 200710114567A CN 101216336 A CN101216336 A CN 101216336A
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- fluid passage
- flow rate
- sensor
- floater
- flow detector
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Abstract
The invention relates to a flow rate detector for controlling flow rate of gas and liquid, belonging to the field of metering equipment. The flow rate detector comprises a shell, a fluid passage, a floater and a sensor, wherein the floater is disposed inside the fluid passage. The invention is characterized in that the floater is made from ferromagnetic material, the sensor is an inductive sensor, the inductive sensor is disposed at the outer side of the fluid passage, and the induction surface of the inductive sensor is abut against the fluid passage. When gas or liquid enters the fluid passage of the flow rate detector from bottom to top, the floater made from the ferromagnetic material is lifted due to buoyant force, when the floater is lifted to the induction surface of the inductive sensor, the inductive sensor is switched on, then the flow rate detector outputs very sensitive signals, and the size of the outputted signals is proportional to the flow rate of the material. The inventive flow rate detector has the advantages of simple structure, and convenience for installation and maintenance.
Description
Technical field
The invention belongs to the metering outfit field, relate to a kind of flow detector that is used for gas, fluid flow control.
Technical background
In industries such as food, tobaccos; according to products characteristics; often need specify the requirement of technologies such as relevant moisture, product hardness, suppleness, environment temperature and humidity to product; and the main method of controlling these technic indexs is exactly to join in water, other solution or their steam are taked or the technology approach that adds is added in the product; therefore the use traffic detecting device is just very necessary to the flow control of gas, liquid in producing; can realize the robotization control and the interlock protection of production system, for the normal operation of equipment provides reliable guarantee.Flow detectors such as that the flow detector that is used for the control of gas, fluid flow in the prior art has is differential, eddy current type, throttle type, there is complex structure in these flow detectors, on-the-spot mounting condition requires high, difficult in maintenance, flow detector contacts with liquid or gas material in the measurement, shortcomings such as the device in the flow detector damages easily, and serviceable life is short.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, installation, flow detector easy to maintenance.
Flow detector provided by the present invention adopts following technical scheme: this flow detector, form by housing, fluid passage, float and sensor, float places the fluid passage, be characterized in that described float adopts ferromagnetic material to make, sensor is an inductance sensor, described inductance sensor is in the outside of fluid passage, and its sensitive surface nestles up the fluid passage.
Flow detector principle of work provided by the present invention is as described below: when liquid or gas material enter the fluid passage of flow detector from bottom to top, the float of being made by ferromagnetic material is subjected to the buoyancy rising, when float rises to the sensitive surface of inductance sensor, the inductance sensor conducting, flow detector just has signal output, and the size of signal output is directly proportional with the flow of liquid or gas.
Flow detector provided by the present invention is mainly used in the flow control of liquid or gas, this flow detector is simple in structure, install, easy to maintenance, reduced maintenance cost, because the inductance sensor that adopts is in the outside of fluid passage, and its sensitive surface nestles up the fluid passage, when the float made from ferromagnetic material rises to the sensitive surface of sensor, inductance sensor is with regard to conducting, very sensitive, flow detector does not contact with liquid or gas material in the measurement, adopts non-contact mode measuring, do not damage survey sensor, stable and reliable for performance, long service life uses it can improve on-the-spot technological level, satisfies the high-caliber robotization requirement of user.
Description of drawings
Fig. 1 is the structural representation of an embodiment of flow detector provided by the present invention.
Among the figure: 1, housing, 2, the fluid passage, 3, view window, 4, float, 5, inductance sensor, 6, the sensitive surface of inductance sensor, 7, the fluid passage import, 8, the fluid passage outlet.
Embodiment
Below in conjunction with description of drawings enforcement of the present invention.Fig. 1 is the structural representation of an embodiment of flow detector provided by the present invention.This embodiment be one be used to measure liquid or gas material, flow is the flow detector of 2-250cm/min.As seen from the figure: flow detector is by housing 1, fluid passage 2, float 4 and inductance sensor 5 are formed, float 4 places fluid passage 2, fluid passage 2 is isometrical Vertical Channel, inductance sensor 5 is 2 the outside in the fluid passage, and its sensitive surface 6 nestles up fluid passage 2, when liquid or gas material enter the fluid passage of flow detector from bottom to top, the float of being made by ferromagnetic material is subjected to the buoyancy rising, when float rises to the sensitive surface of sensor, the inductance sensor conducting, flow detector just has signal output, and the size of signal output is directly proportional with the flow of liquid or gas.The housing 1 of this flow detector adopts brass to make, glass tube is adopted in fluid passage 2, the bottom of housing 1, top is respectively equipped with fluid passage import 7 that built-in screw thread is arranged and the fluid passage outlet 8 that communicates with the fluid passage, the outside of housing 1 has the view window 3 that can observe float, the float 4 that ferromagnetic material is made adopts 304 stainless steels to make, float is a hollow, have the mounting hole of sensor on the housing 1, inductance sensor 5 is by being threaded on the housing 1, make the sensitive surface 6 of inductance sensor 5 abut against the outside of fluid passage 2, inductance sensor 5 is according to the range apolegamy of flow detector.It has simple in structure, installation, easy to maintenance, advantage that profile is exquisite, measures flow and adopts the noncontact mode, does not damage survey sensor, stable and reliable for performance, long service life.
Claims (1)
1. flow detector, form by housing, fluid passage, float and sensor, float places the fluid passage, it is characterized in that described float adopts ferromagnetic material to make, sensor is an inductance sensor, described inductance sensor is in the outside of fluid passage, and its sensitive surface nestles up the fluid passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101145671A CN101216336A (en) | 2007-12-27 | 2007-12-27 | Flow detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101145671A CN101216336A (en) | 2007-12-27 | 2007-12-27 | Flow detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101216336A true CN101216336A (en) | 2008-07-09 |
Family
ID=39622814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101145671A Pending CN101216336A (en) | 2007-12-27 | 2007-12-27 | Flow detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101216336A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759192A (en) * | 2018-06-20 | 2018-11-06 | 合肥美的电冰箱有限公司 | Break-make detector, refrigeration system, refrigerator and the refrigeration detection method of refrigerating circuit |
-
2007
- 2007-12-27 CN CNA2007101145671A patent/CN101216336A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759192A (en) * | 2018-06-20 | 2018-11-06 | 合肥美的电冰箱有限公司 | Break-make detector, refrigeration system, refrigerator and the refrigeration detection method of refrigerating circuit |
| CN108759192B (en) * | 2018-06-20 | 2020-10-09 | 合肥美的电冰箱有限公司 | On-off detector of refrigeration loop, refrigeration system, refrigerator and refrigeration detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |