CN206990059U - Floating roof tank low liquid level switchs - Google Patents
Floating roof tank low liquid level switchs Download PDFInfo
- Publication number
- CN206990059U CN206990059U CN201720955413.4U CN201720955413U CN206990059U CN 206990059 U CN206990059 U CN 206990059U CN 201720955413 U CN201720955413 U CN 201720955413U CN 206990059 U CN206990059 U CN 206990059U
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- floating
- floating roof
- liquid level
- terraced
- tablet
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Abstract
Floating roof tank low liquid level switchs, and belongs to oil storage and transportation field, in order to solve the safety and reliability that raising floating roof tank low liquid level warning is activated, and improves the problem of alarming accuracy, technical essential is：Including proximity switch (1), tablet (2), be positioned proximate to switch on floating terraced (5) (1) and its be configured to it is mobile with floating terraced (5) and close to tablet (2), the tablet (2) is limited in the induction region for making the proximity switch (1) on floating terraced (5) be in tablet (2) when liquid level is at or below alert locations, the floating ladder is located on the floating roof of floating roof tank and moved in the horizontal direction on the orbit plane for floating terraced track (3) with the lifting of floating roof, the floating roof changes with liquid level in floating roof tank and lifting effect is：The safety and reliability of switch is ensure that, the accuracy of alarm is lifted.
Description
Technical field
The utility model belongs to oil storage and transportation field, is related to a kind of floating roof tank low liquid level switch.
Background technology
Oiling product storage tank should set low liquid level warning device according to the requirement of existing national regulation, generally require device in storage tank
When liquid level is less than the liquid level of design requirement, alarm signal is transferred to central control system, central control system realizes alarm, interlock protection work(
Energy.
Crude oil floating roof tank is typically from Fork LIquid Level Switch, radio frequency admittance level gauge switch and ultrasonic liquid level switch at present
As the detection front end of warning device, but effect is undesirable, and wherein Fork LIquid Level Switch is attached to sound due to the viscosity of crude oil
Pitch in mechanism, the work of Fork LIquid Level Switch can be directly affected；Radio frequency admittance level gauge switchs and ultrasonic liquid level switch used
Cheng Zhong, because the influence of difference and the crude oil attachment of crude oil medium can cause measurement accuracy very low, false alarm frequency is high.By
This, above-mentioned three kinds of liquid-level switches can not ensure alarm, the reliability service of interlock protection function, have impact on the peace of oiling product accumulating
Full production.
With the generation of oiling product accumulating production accident in recent years, country keeps the safety in production to it proposes higher requirement,
The low liquid level switch of high reliability is installed, is the important measures for ensureing oiling product accumulating production safety.Improve low liquid level switch
Reliability and safety is particularly important.
Utility model content
In order to solve the safety and reliability that raising floating roof tank low liquid level warning is activated, and improve alarm accuracy
Problem, the utility model proposes following technical scheme：A kind of floating roof tank low liquid level switch, including proximity switch, tablet, floating
Switch is positioned proximate on ladder and it is configured to be limited in liquid level close to tablet, the tablet with floating terraced movement
The proximity switch on floating ladder is set to be in the induction region of tablet during at or below alert locations, the floating ladder is located at floating roof tank
Floating roof on and with floating roof lifting with float terraced track orbit plane on move in the horizontal direction, the floating roof is with floating roof
Liquid level changes and lifted in tank.
Float terraced track to be located on floating roof, float ladder positioned at floating on terraced track, the radius of described floating roof is less than floating roof tank
Canister radius, and floating roof is floated on floating roof jar liquid surface, is floated terraced one end axle and is connected to floating roof tank top end wall along making floating ladder
The other end can circumferentially be moved centered on the axle that the axle connects.
Float ladder the other end by rotary shaft be provided with two wheels with along floating terraced orbit plane in the horizontal direction
Mobile, proximity switch is arranged on the floating terraced surface near wheel, and the surface is relative with the tablet.
The proximity switch is fixed on the surface relative with tablet for floating ladder by proximity switch support.
Floating terraced track includes support column and the orbit plane by the support column side of being fixed thereon, and the tablet and crossbeam are tight
It is solidly connected, and crossbeam is fixed on the side of the support column.
Tablet is bolted connection or snapped connection with crossbeam, and crossbeam is fixed on the branch by bolt or buckle
The side of dagger.
Tablet includes two risers and is connected to the transverse slat of two risers, two risers stub area with it is described
Crossbeam is fixedly connected.
Riser is bolted or welded with transverse slat.
Described floating roof, floating ladder, float above the floating roof for the inside that terraced track, proximity switch, tablet are respectively positioned on floating roof tank.
Beneficial effect：The utility model provides a kind of new departure of liquid-level switch, can open floating roof tank low liquid level
Dynamic alarm, it is formed using simple theory of mechanics and electrical equipment, wherein：Floating roof uses other composition portions for causing switch
Point not with crude oil physical contact between media, by floating the gearing of ladder, by height of liquid level change transitions to move horizontally with can
Start low liquid level warning, due to switch by crude oil influenceed minimum, the safety and reliability of switch is ensure that, also due to not
The measurement accuracy (vertical, horizontal displacement conversion precision) for being influenceed to cause switch by crude oil attachment is enhanced, alarm it is accurate
Property is lifted.
Brief description of the drawings
Fig. 1 is the front view of floating roof tank low liquid level switch；
Fig. 2 is the side view of Fig. 1 shown devices.
Wherein：1. proximity switch, 2. tablets, 3. float terraced track, 4. proximity switch supports, 5. floating ladders, 6. crossbeams, 7. spiral shells
Tether fishplate bar, 8. wheels, 9. rotary shafts.
Embodiment
Embodiment：A kind of floating roof tank low liquid level switch, including proximity switch 1, tablet 2, are positioned proximate to out on floating ladder 5
Close 1 and its be configured to it is floating it is terraced 5 movement and close to tablet 2, the tablet 2 be limited in liquid level at or below
The proximity switch 1 on floating ladder 5 is set to be in the induction region of tablet 2 during alert locations, the floating ladder is located at the floating roof of floating roof tank
On and with floating roof lifting with float terraced track 3 orbit plane on move in the horizontal direction, the floating roof is with floating roof tank
Liquid level changes and lifted.
Float terraced track 3 to be located on floating roof, float ladder 5 positioned at floating on terraced track 3, the radius of described floating roof is less than floating roof
The radius of the canister of tank, and floating roof is floated on floating roof jar liquid surface, it is floating terraced along making that 5 one end axles of floating ladder are connected to floating roof tank top end wall
5 other end can circumferentially be moved centered on the axle that the axle connects.The other end of floating ladder 5 is provided with two by rotary shaft 9
For individual wheel 8 to be moved in the horizontal direction along the floating terraced plane of track 3, proximity switch 1 is arranged on floating terraced 5 table near wheel 8
Face, the surface and the tablet 2 are relative, the proximity switch 1 floating ladder 5 is fixed on by proximity switch support 4 with tablet 2
Relative surface.Due to the wheel 8 of the lower end of floating ladder 5 installation and floating roof it is spacing so that the horizontal direction of 5 lower ends of floating ladder
Displacement becomes apparent, and the displacement in vertical direction does not need to use the vertical displacement, thus its due to the smaller and program
It can be ignored, as long as movement in the horizontal direction to be placed in alert locations or following in liquid level, float the proximity switch on ladder 5
The induction region of tablet 2 is may be at, also, the floating terraced track 3 of the present embodiment includes support column and consolidated by support column
Fixed orbit plane above it, the tablet 2 is fastenedly connected with crossbeam 6, and crossbeam 6 is fixed on the side of the support column
Face, preferably crossbeam 6 are fixed between two support columns.Tablet 2 is bolted connection with crossbeam 6 or buckle connects
Connect, crossbeam 6 is fixed on the side of the support column by bolt or buckle.Tablet 2 includes two risers and is connected to two
The transverse slat of riser, be fixedly connected in the stub area of two risers with described crossbeam 6, riser and transverse slat be bolted or
Weld or snap connection, be bolted plate 7 and fix riser and crossbeam 6.Caused by such scheme, the structure of tablet
It is provided with a larger induction region scope in vertical direction, further reduces floating terraced circular motion for vertical side
Influence to component.In an arrangement, described floating roof, floating ladder 5, floating terraced track 3, proximity switch 1, tablet 2 are respectively positioned on
The inside of floating roof tank.
Each crude oil floating roof tank has the floating ladder of a frame, and the floating ladder is connected between the floating roof of storage tank and tank skin.Floating ladder can
Moved forward and backward in orbit with the lifting of floating roof.And the height of liquid level is synchronous with the lifting of floating roof.According to this rule,
Installing proximity switch and tablet, the selection of this relevant position on the relevant position of floating ladder and track is：Report is also less than in liquid level
During alert position, proximity switch separates with tablet, and proximity switch will not induction alarm；When liquid level drops to alert locations or after
It is continuous to decline so that floating roof synchronously declines, and servo-actuated floating ladder is because the decline of floating roof causes to move horizontally, this move horizontally so that
Proximity switch is in distance of reaction with tablet, and proximity switch sends alarm signal.It can be used when each part is installed
Snap connection, convenient installation, security incident caused by fire operation can also be avoided.This floating roof tank low liquid level switch, is utilized
Simple theory of mechanics and electrical equipment, not with crude oil physical contact between media, it is possible to play a part of low liquid level warning, together
When have the characteristics that safe and reliable, measurement accuracy is high.
The installation process of floating roof tank low liquid level switch is as follows:Fastener is designed using the upper shaped steel of floating ladder during installation, is connect
The position relationship of nearly switch and tablet refers to floating roof tank design drawing, and proximity switch support is arranged on and floats terraced appropriate location,
In the present embodiment, the diameter 80m of crude oil floating roof tank, height about 23m, induction region distance float terraced track end 1000mm-
1500mm, inductive switch, which is located at, to float at terraced end 500mm；Tablet is fixed on track supporting leg, all installations are all of U-shaped
Snap connector, it is not necessary to get angry, trickle adjustment is carried out after installation, ensure that the distance between proximity switch and tablet exist
On rational position, and interference will not be produced, avoid floating ladder from damaging proximity switch in motion process.The low liquid of the floating roof tank
Bit switch is applied to build all floating roof tanks completed and will built.
It is described above, the only preferable embodiment of the invention, but the protection domain of the invention is not
This is confined to, any one skilled in the art is in the technical scope that the invention discloses, according to the present invention
The technical scheme of creation and its inventive concept are subject to equivalent substitution or change, should all cover the invention protection domain it
It is interior.
Claims (9)
1. a kind of floating roof tank low liquid level switch, it is characterised in that including proximity switch (1), tablet (2), set on floating terraced (5)
Put proximity switch (1) and it is configured to mobile with floating terraced (5) and is limited in close to tablet (2), the tablet (2)
The proximity switch (1) on floating terraced (5) is set to be in the induction region of tablet (2), institute when liquid level is at or below alert locations
Floating ladder is stated on the floating roof of floating roof tank and with floating roof lifting with the orbit plane for floating terraced track (3) in the horizontal direction
Mobile, the floating roof changes and lifted with liquid level in floating roof tank.
2. floating roof tank low liquid level switch as claimed in claim 1, it is characterised in that float terraced track (3) and be located on floating roof, float
Terraced (5), which are located at, floats on terraced track (3), and the radius of described floating roof is less than the radius of the canister of floating roof tank, and floating roof floats on
On floating roof jar liquid surface, floating ladder (5) one end axle is connected to floating roof upper end wall along the axle for enabling the other end of floating terraced (5) to be connect with the axle
Centered on circumferentially move.
3. floating roof tank low liquid level switch as claimed in claim 2, it is characterised in that the other end of floating ladder (5) is by turning
Moving axis (9) is provided with two wheels (8) to be moved in the horizontal direction along floating terraced track (3) plane, and proximity switch (1) is arranged on
The surface of floating terraced (5) of wheel (8) nearby, the surface are relative with the tablet (2).
4. floating roof tank low liquid level switch as claimed in claim 3, it is characterised in that the proximity switch (1) is by proximity switch
Support (4) is fixed on the surface relative with tablet (2) of floating terraced (5).
5. floating roof tank low liquid level as claimed in claim 1 switch, it is characterised in that float terraced track (3) include support column and by
The orbit plane of the support column side of being fixed thereon, the tablet (2) is fastenedly connected with crossbeam (6), and crossbeam (6) is fixed on
The side of the support column.
6. floating roof tank low liquid level switch as claimed in claim 5, it is characterised in that tablet (2) passes through bolt with crossbeam (6)
It is fastenedly connected or snaps connection, crossbeam (6) is fixed on the side of the support column by bolt or buckle.
7. floating roof tank low liquid level switch as claimed in claim 5, it is characterised in that tablet (2) includes two risers and company
The transverse slat of two risers is connected to, is fixedly connected in the stub area of two risers with described crossbeam (6).
8. floating roof tank low liquid level switch as claimed in claim 7, it is characterised in that riser is bolted or welded with transverse slat
Connect or snap connection.
9. the floating roof tank low liquid level switch as described in claim any one of 1-8, it is characterised in that described floating roof, floating ladder
(5), above the floating roof for the inside that floating terraced track (3), proximity switch (1), tablet (2) are respectively positioned on floating roof tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720955413.4U CN206990059U (en) | 2017-08-02 | 2017-08-02 | Floating roof tank low liquid level switchs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720955413.4U CN206990059U (en) | 2017-08-02 | 2017-08-02 | Floating roof tank low liquid level switchs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206990059U true CN206990059U (en) | 2018-02-09 |
Family
ID=61418518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720955413.4U Active CN206990059U (en) | 2017-08-02 | 2017-08-02 | Floating roof tank low liquid level switchs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206990059U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186653A (en) * | 2018-11-14 | 2020-05-22 | 中国石油化工股份有限公司 | Mounting method of roller device of rotary floating ladder of floating roof storage tank |
| CN111186652A (en) * | 2018-11-14 | 2020-05-22 | 中国石油化工股份有限公司 | Floating roof storage tank rotating floating ladder roller device |
-
2017
- 2017-08-02 CN CN201720955413.4U patent/CN206990059U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186653A (en) * | 2018-11-14 | 2020-05-22 | 中国石油化工股份有限公司 | Mounting method of roller device of rotary floating ladder of floating roof storage tank |
| CN111186652A (en) * | 2018-11-14 | 2020-05-22 | 中国石油化工股份有限公司 | Floating roof storage tank rotating floating ladder roller device |
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