CN109961981A - A kind of electric contact water level switch - Google Patents
A kind of electric contact water level switch Download PDFInfo
- Publication number
- CN109961981A CN109961981A CN201711413137.XA CN201711413137A CN109961981A CN 109961981 A CN109961981 A CN 109961981A CN 201711413137 A CN201711413137 A CN 201711413137A CN 109961981 A CN109961981 A CN 109961981A
- Authority
- CN
- China
- Prior art keywords
- lever
- steel
- water level
- terminal
- connect
- 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.)
- Granted
Links
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
- H01H35/26—Details
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Level Indicators Using A Float (AREA)
Abstract
A kind of electric contact water level switch.The problem of it is lower that the present invention solves existing water level switch operating temperature pressure, is not able to satisfy high-temperature high-pressure apparatus monitoring water level.Steel pipe front end of the invention and lever set connect, the centre bore that lever is covered by lever, steel shaft penetrates the hole of lever set and lever, group is in the hinge connection, lever front end connects float, the recess of insulation column end is protruded into lever end, symmetrical pre-buried two stainless steel screws in recess, electrical contact switch is formed with lever end, pre-buried two wires in insulated column, metal line front end and screw welding, end connects connecting terminal, the switching signal of connecting terminal output water-level alarm circuit, the present invention is applicable in high-temperature high-pressure apparatus monitoring water level, with warning function twice, it is simple and compact for structure, it is easy to manufacture, production cost is low, long service life, it is applicable in the high-temperature high-pressure apparatus monitoring water levels such as power plant nuclear power plant.
Description
Technical field
The present invention relates to a kind of liquid-level switch, specifically a kind of electric contact water level switch.
Background technique
The equipment for needing to measure water level in industrial processes is more, some equipment do not need instrument and continuously measure water level,
It is required that water level keeps within the specified scope, when water level is more than regulation, issuing alarm signal in time, trying to avert accidents.
Existing liquid-level switch operating temperature pressure is lower, is not able to satisfy high-temperature high-pressure apparatus monitoring water level.Ultrasonic wave
LVU-A700 series liquid-level switch, 70 DEG C of maximum operating temperature, maximum working pressure 0.6MPa.Connecting rod floating ball level switch UQK-
80 series, -30 DEG C of operating temperature~160 DEG C, operating pressure 2.5MPa.Capacitance liquid level switch SZ88 series, -25 DEG C of operating temperature
~180 DEG C, 0.1~4MPa of operating pressure.- 20 DEG C~220 DEG C of electric pole type liquid-level switch operating temperature, operating pressure 1MPa.Beauty
- 30 DEG C~150 DEG C of temperature of state HT-TOUCH type Fork LIquid Level Switch HF series of tasks, operating pressure are less than 2MPa.
The heater of power plant nuclear power plant, 1~6MPa of vapour pressure, 250 DEG C of temperature or more, existing liquid-level switch is not able to satisfy
It is required that.So far power plant uses the water level of electric contact sensor and instrument monitoring high-temperature high-pressure apparatus, and systematic comparison is complicated, structure
Not compact, cost is high, poor reliability.The reliability requirement of power plant nuclear power plant heat power equipment monitoring water level is higher, for taking precautions against
The generation of major accident.
Summary of the invention
The object of the present invention is to provide a kind of high temperature and pressure water level switches simple and compact for structure, reliable operation, meet hair
The needs of the enterprises such as nuclear power plant, power plant high-temperature high-pressure apparatus monitoring water level.
The technical solution adopted by the present invention to solve the above technical problem is:
A kind of electric contact water level switch, it includes steel pipe, lever set, lever, float, insulated column, the first metal wire, second
Metal wire, steel plate, terminal base, float cover, flange, end cap, first terminal, Second terminal, third terminal, the front end of the steel pipe
It is connect with lever external threading, the rear end of steel pipe is threadedly coupled with end cap, and the lever is a stainless steel cylindrical body, passes through lever set
Center is overlapped with the axis of lever set, and lever and lever set respectively have a hole, and steel shaft penetrates the hole of lever set and lever, forms hinge
The front end of chain link, lever is connect with float, and the recess of insulated column is protruded into the end of lever, and insulated column is fixedly arranged in steel pipe, steel
A steel plate, the pressure of steam suffered by supports insulative column, water are welded in pipe, terminal base and steel plate are connected with screw, and terminal base is equipped with
Three connecting terminals, in insulated column recess, symmetrical pre-buried two stainless steel screws, screw end and lever end form electric contact
It switchs, pre-buried two wires in insulated column, the front end of the first metal wire and the first stainless steel screw weld, and pass through the first porcelain
Pipe, end connect first terminal, and the front end of the second metal wire and the second stainless steel screw weld, and by the second porcelain tube, end connects
Second terminal is connect, steel tube shell is connect with third terminal, and lever is cased with external screw thread and connect with float cover, and float cover is cylindrical,
It is closed at one end, the upper surface of float cover and following each there are two holes.
The present invention has the following effects compared with the prior art:
1. existing liquid-level switch operating temperature is lower than 220 DEG C, operating pressure is less than 4MPa, and electric contact water level of the present invention is opened
400 DEG C of operating temperature are closed, operating pressure 10MPa can satisfy the high-temperature high-pressure apparatus monitoring water level such as power plant nuclear power plant.2. existing
Some electric contact sensors, cannot directly control the open and close of warning circuit, and electric contact water level switch of the present invention is directly controlled
The open and close of warning circuit processed.3. electric contact water level switch of the present invention, is capable of providing Water-level alarm switch signal twice, mentions
The high reliability of monitoring water level.4. the configuration of the present invention is simple is compact, easy to manufacture, production cost is low, easy for installation, uses the longevity
Life length.
Detailed description of the invention
Fig. 1 is main sectional view of the invention
Fig. 2 is the sectional view of A-A in Fig. 1
Specific embodiment
Specific embodiment 1: illustrating present embodiment, the electric contact water level switch packet of present embodiment in conjunction with Fig. 1, Fig. 2
Include steel pipe 1, lever covers 2, lever 3, float 4, insulated column 5, the first stainless steel screw 5-1, the second stainless steel screw 5-2, first
Metal wire 5-3, the second metal wire 5-4, steel plate 6, terminal base 7, float cover 8, flange 9, end cap 10, first terminal 11, second end
Sub 12, third terminal 13；
The front end of the steel pipe 1 and lever set 2 is threadedly coupled, and lever 3 passes through the centre bore of lever set, the axis of lever and
The axis of lever set is overlapped, and lever set and lever respectively have a hole, and steel shaft 3-1 penetrates the hole of lever set and lever, and composition hinge connects
It connecing, lever and steel shaft make of stainless steel, and lever front end and float 4 weld, and float is hollow steel ball or hollow cylinder,
The recess of 5 one end of insulated column, insulated column glass or ceramic material, the outer diameter and steel pipe 1 of insulated column are protruded into lever end
The gap of internal diameter is 1mm, is bonded and sealed with high-temperature plastic, and welding steel 6 in steel pipe, supports insulative cylinder 5, there are two steel plates
Hole has porcelain bushing shell a 6-1 and 6-2 in each hole, and the screw of terminal base 7 is connect with steel plate, and terminal base ceramic material is held
Three connecting terminals 11,12,13 are installed on stroma, in the recess of insulated column one end symmetrical pre-buried first stainless steel screw 5-1 and
Second stainless steel screw 5-2, the pre-buried first metal wire 5-3 and the second metal wire 5-4 in insulated column, the first metal line front end with
The welding of first stainless steel screw, end pass through porcelain bushing shell 6-1, connect with terminal 11, the second metal line front end and the second stainless steel
Screw welding, end pass through porcelain bushing shell 6-2 and connect with terminal 12, and shell is connect with terminal 13, and lever is cased with external screw thread and float
8 connection of cover, float cover are steel cylinders, and front end closing, float cover is each up and down, and there are two holes, are uniformly and symmetrically distributed, steel tube shell
Middle part welded flange 9 is connect with level monitoring equipment, and steel pipe end is connect with 10 screw of end cap.
Specific embodiment 2: embodiment is described with reference to Fig. 1, present embodiment the first metal wire 5-3 and the second gold medal
Belong to line 5-4, samples the copper wire of diameter 1.5mm.
Specific embodiment 3: embodiment is described with reference to Fig. 1, there are two types of present embodiment floats 4, and one is hollow
Steel ball, another kind are hollow cylinders, are made of one section of steel pipe is closed at both ends.
Specific embodiment 4: illustrating present embodiment in conjunction with Fig. 1 Fig. 2, there are two aperture, apertures to penetrate pin by steel shaft 3-1
Nail makes lever 3 be fixed on the center of lever set.
The working principle of the invention: illustrate the working principle of the invention in conjunction with Fig. 1, Fig. 2, electric contact water level of the invention is opened
Pass is mounted in the pipeline that need to monitor vertical SEA LEVEL VARIATION or equipment, firstly, water level switch is increased for water level in monitoring device
Variation, when initial, water does not enter float cover, and lever is in non-equilibrium state, and float sinks, lever end and screw 5-1 phase
Contact, 13 output circuit closure signal of first terminal 11 and third terminal, subsequent water has entered float cover, with the liter of water level
Height, float rises, and when water level is increased to setting value, 13 output circuit cut-off signal of terminal 11 and terminal exports first time water level
Signal is increased, continues to increase with water level, float continues to rise, and terminal 12 and terminal 13 are closed, and exports second of water level liter
High RST.
With the above process on the contrary, water level switch level monitoring reduces, when high water level, float is moved up, terminal 12 and terminal 13
Closure, export water level initial signal, water level decreasing arrive setting value when, float moves down, terminal 12 and 13 output circuit of terminal disconnection
Signal exports the low signal of water level for the first time, continues to reduce with water level, and terminal 11 and terminal 13 are closed, and second of output
Water level low signal.
Claims (2)
1. a kind of electric contact water level switch, it is characterised in that: the front end of steel pipe (1) is threadedly coupled with lever set (2), lever (3)
The centre bore covered by lever, lever make of stainless steel, and lever set and lever respectively have a hole, and steel shaft (3-1) penetrates lever
The hole shape of set and lever is in the hinge connection, and lever front end and float (4) are welded, and float is hollow steel ball or hollow cylinder, thick stick
The recess of insulated column (5) one end, insulated column glass or ceramic material are protruded into bar end, between insulated column and steel pipe inner wall
It is bonded and sealed with high-temperature plastic, welding steel (6) in steel pipe, there are two holes for steel plate, are respectively put into porcelain bushing shell (6-1) and porcelain bushing shell
(6-2), terminal base (7) ceramic material, is connect with screw with steel plate, attaching line terminals 11 on terminal base, 12 He of terminal
Terminal 13, symmetrical pre-buried first stainless steel screw (5-1) and the second stainless steel screw (5-2) in the recess of insulated column one end, exhausted
Pre-buried first metal wire (5-3) and the second metal wire (5-4) in edge column, the first metal line front end and the first stainless steel screw weld
It connects, end passes through porcelain bushing shell (6-1) and connect with terminal 11, and the second metal line front end and the second stainless steel screw weld, and end is worn
It crosses porcelain bushing shell (6-2) to connect with terminal 12, steel pipe is connect with terminal 13, and lever is cased with external screw thread and connect with float cover (8), float
Cover is made by steel cylinder, and front end closing, float cover is each up and down, and there are two holes, is uniformly and symmetrically distributed, welded flange in the middle part of steel tube shell
(9), steel pipe end is connect with end cap (10) screw.
2. a kind of electric contact water level switch according to claim 1, it is characterised in that: be embedded in insulated column (5)
One metal wire (5-3) and the second metal wire (5-4) use the copper wire of diameter 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711413137.XA CN109961981B (en) | 2017-12-24 | 2017-12-24 | Electric contact water level switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711413137.XA CN109961981B (en) | 2017-12-24 | 2017-12-24 | Electric contact water level switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109961981A true CN109961981A (en) | 2019-07-02 |
| CN109961981B CN109961981B (en) | 2020-05-01 |
Family
ID=67020130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711413137.XA Active CN109961981B (en) | 2017-12-24 | 2017-12-24 | Electric contact water level switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109961981B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4081638A (en) * | 1976-10-26 | 1978-03-28 | Corning Glass Works | Level control with float actuated switch |
| US6051800A (en) * | 1998-08-20 | 2000-04-18 | E.M.B. Corporation | Snap action switch |
| CN201100244Y (en) * | 2007-09-18 | 2008-08-13 | 阳旭东 | Automatic pumping switch device for control water well diving pump |
| CN101320507A (en) * | 2008-06-12 | 2008-12-10 | 广州伟韬电子科技有限公司 | Alarm device with buoyant force circuit switch |
| CN202678207U (en) * | 2012-06-20 | 2013-01-16 | 北京铭铨环保技术有限公司 | Novel float switch device |
| CN205845836U (en) * | 2016-04-27 | 2016-12-28 | 新界泵业集团股份有限公司 | A kind of float switch construction |
-
2017
- 2017-12-24 CN CN201711413137.XA patent/CN109961981B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4081638A (en) * | 1976-10-26 | 1978-03-28 | Corning Glass Works | Level control with float actuated switch |
| US6051800A (en) * | 1998-08-20 | 2000-04-18 | E.M.B. Corporation | Snap action switch |
| CN201100244Y (en) * | 2007-09-18 | 2008-08-13 | 阳旭东 | Automatic pumping switch device for control water well diving pump |
| CN101320507A (en) * | 2008-06-12 | 2008-12-10 | 广州伟韬电子科技有限公司 | Alarm device with buoyant force circuit switch |
| CN202678207U (en) * | 2012-06-20 | 2013-01-16 | 北京铭铨环保技术有限公司 | Novel float switch device |
| CN205845836U (en) * | 2016-04-27 | 2016-12-28 | 新界泵业集团股份有限公司 | A kind of float switch construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109961981B (en) | 2020-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105390337B (en) | A kind of high antivibration sulfur hexafluoride gas density relay | |
| CN105938778A (en) | Float-type liquid level switch | |
| CN109961981A (en) | A kind of electric contact water level switch | |
| CN204269069U (en) | A kind of rupture disk monitoring running state device | |
| CN107462340A (en) | A kind of overtemperature warns bolt | |
| CN109959430A (en) | A kind of tongue tube water level switch | |
| CN203053524U (en) | Reed pipe magneto-dependent sensor | |
| CN210005157U (en) | pressure gauge with antifreezing function | |
| CN201069752Y (en) | Fuse | |
| CN110349801B (en) | Float water level switch | |
| CN203405262U (en) | Liquid level sensor | |
| CN102005331B (en) | Thermal insulation relay with dual operating points | |
| CN201655670U (en) | Liquid level switch | |
| CN207147656U (en) | A kind of overtemperature warns bolt | |
| CN201780140U (en) | Liquid level measuring device | |
| CN206921740U (en) | A kind of disconnecting switch with contact indicator function | |
| CN203643045U (en) | High-reliability temperature sensor for water heater | |
| CN213304050U (en) | Oil-immersed high-voltage fuse for full-range protection | |
| CN201413983Y (en) | Heat protector installing structure of soybean milk maker | |
| CN202549716U (en) | Pressure switch with double-elastic element | |
| CN209571596U (en) | Motor compressor binding post structure | |
| CN208093887U (en) | Thermal power generation factory owner watt temperature detecting resistance draws wiring dish structure | |
| CN103258686A (en) | Temperature protection device based on micromechanical cantilever beam structure | |
| CN203574235U (en) | Load switch and fuse protection combined insulating cylinder | |
| CN2140557Y (en) | Temp regulating switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |