CN207671034U - Confined gas pipeline purging equipment for internal floating roof tank - Google Patents
Confined gas pipeline purging equipment for internal floating roof tank Download PDFInfo
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- CN207671034U CN207671034U CN201721681720.4U CN201721681720U CN207671034U CN 207671034 U CN207671034 U CN 207671034U CN 201721681720 U CN201721681720 U CN 201721681720U CN 207671034 U CN207671034 U CN 207671034U
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- floating roof
- valve
- pipeline purging
- roof tank
- internal floating
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Abstract
The utility model discloses a kind of confined gas pipeline purging equipment for internal floating roof tank, including：Knockout drum, its top is equipped with the first nozzle and the second nozzle, first nozzle is connected to by first pipe by pipeline purging pipeline, and the second nozzle is connected to the top of internal floating roof tank by second pipe, and the bottom of knockout drum is connected to the bottom of internal floating roof tank by third pipeline；Conduit is vertically set in knockout drum, and the upper end of conduit is connected with the second nozzle, and the tube wall of conduit is equipped with through-hole；Double float connecting rod structures, double float connecting rod structures are set in conduit, include the first float and the second float of connecting rod and the both ends for being respectively arranged on connecting rod；Valve group, valve group include the first valve, the second valve, third valve and check-valves.The equipment can effectively realize gas-liquid two-phase separation, avoid disturbance of the pipeline purging gas to liquid phase.
Description
Technical field
The utility model is related to petrochemical industry material storing field, more particularly to a kind of gas for internal floating roof tank is close
Close pipeline purging equipment.
Background technology
With the high speed development of China's derived energy chemical industry, the demand of crude oil is constantly in a high position, and China is former within 2016
Oil yield is 200,000,000 tons, 3.8 hundred million tons of imported crude oil, it means that the oil-refining chemical ability in China, which wants matched, could meet warp
The development that Ji is built.A critically important ring is the storage of petrochemical materials, product in oil-refining chemical.
In petrochemical industry material storage-transportation field, the storage of various materials is related to different equipment, wherein for high-volume
The storage of material, the equipment usually selected are storage tanks.The form of storage tank is varied, can be with generally according to the difference of pressure store
It is divided into atmospheric storage tank, low pressure storage tank, pressure vessel.Wherein atmospheric storage tank includes fixed roof tank, internal floating roof tank, outer floating roof again
Storage tank etc..
For storage boiling point, more than or equal to 45 DEG C or at 37.8 DEG C, saturated vapour pressure is not more than the B-grade in the first class of 88kPa, second A
Class I liquid I (except special chemicals), such as gasoline, kerosene, light diesel fuel often select internal floating roof tank to be stored, inner floating roof storage
Tank refers to the storage tank that floating plate is housed in fixed roof tank, can greatly reduce the evaporating loss of pot liquid medium in this way.
Oil, chemical plant or oil depot etc. can inevitably encounter plan or disastershutdown, inspection during production run
Repair state.When overhauling various equipment pipes, the medium in pipeline is purged totally, it is a kind of safety then to carry out fire operation again
Reliable operating method.
Currently, pipeline liquid is purged into internal floating roof tank the method there are no mature and reliable using gas, mainly
Because during gas pipeline purging, can form biphase gas and liquid flow, gas can be imported and exported with liquid by liquid in storage tank to be entered together
In internal floating roof tank, or because can not accurate judgement swept medium and swept into completely the time of internal floating roof tank, also have portion
Divide gas to enter in internal floating roof tank, cause the violent disturbance of medium in tank, so that the floating plate inside internal floating roof tank is deviateed predetermined
Position, serious situation may cause floating plate to topple, cause safety accident.Part factory can also use the material in pipeline
Being swept into slop tank, either then sump oil system carries out freshening or other schemes handled again, can cause certain material in this way
With the waste of energy.
Therefore, it is intended that a kind of gas pipeline purging equipment for internal floating roof tank safe and reliable, that waste can be avoided of exploitation.
Utility model content
The purpose of this utility model is to propose a kind of confined gas pipeline purging equipment for internal floating roof tank, existing to overcome
Device security is poor, wastes the defect of material and energy.
The utility model uses following solution：
A kind of confined gas pipeline purging equipment for internal floating roof tank, including：
The top of knockout drum, the knockout drum is equipped with the first nozzle and the second nozzle, and first nozzle is logical
It crosses first pipe to be connected to by pipeline purging pipeline, second nozzle is connected to the top of internal floating roof tank, institute by second pipe
The bottom for stating knockout drum is connected to the bottom of the internal floating roof tank by third pipeline；
Conduit, the conduit are vertically set in the knockout drum, and the upper end of the conduit and described the
Two nozzles are connected, and the tube wall of the conduit is equipped with through-hole；
Double float connecting rod structures, double float connecting rod structures are set in the conduit, including connecting rod and are respectively arranged on institute
State first float and the second float at the both ends of connecting rod；
Valve group, the valve group includes the first valve, the second valve, third valve and check-valves, wherein described first
Valve is set in the first pipe, and second valve is set on the second pipe, the third valve and non-return
Valve may be contained on the third pipeline, and the third valve, close to the knockout drum, the check-valves is close to described
Internal floating roof tank.
Preferably, first float and the second float are hollow ball.
Preferably, the cross section of the conduit is circle.
Preferably, the outer diameter of the hollow ball is less than or equal to the internal diameter of the conduit, and the outer diameter of the hollow ball is big
In the diameter of second nozzle.
Preferably, the tube wall of the conduit is evenly distributed with multiple through-holes from top to bottom.
Preferably, first float and the second float are made of polytetrafluoroethylene (PTFE).
Preferably, the confined gas pipeline purging equipment for internal floating roof tank further includes liquid level gauge, and the liquid level gauge is used
In the liquid level for detecting the knockout drum.
Preferably, the knockout drum is that vertical barrel type tank or both ends of the both ends with ellipsoidal head carry discount vibram outlet
The vertical barrel type tank of end socket.
Preferably, described to be equipped with pipeline purging gas valve by pipeline purging pipeline, pipeline purging gas passes through the pipeline purging gas valve
Into described by pipeline purging pipeline.
Preferably, the pipeline purging gas is inert gas.
The beneficial effects of the utility model are：
1. pipeline purging gas is made to enter the gas-phase space above internal floating roof tank, keep the liquid phase that liquid phase enters internal floating roof tank empty
Between, to effectively realize gas-liquid two-phase separation, disturbance of the pipeline purging gas to liquid phase is avoided, use can be safely and efficiently reached
Pipeline internal medium is swept into the purpose of internal floating roof tank by gas；
2. equipment investment is few, operation scheme is simple, reliable.
Description of the drawings
The utility model illustrative embodiments are described in more detail in conjunction with the accompanying drawings, the utility model it is upper
It states and other purposes, feature and advantage will be apparent.Wherein, in the utility model illustrative embodiments, phase
Same reference numeral typically represents same parts.
Fig. 1 is the confined gas pipeline purging equipment for internal floating roof tank of exemplary embodiment according to the present utility model
Structural schematic diagram.
Reference sign：
1- knockout drums, 2- internal floating roof tanks, 3- liquid level gauges, the first valves of 4-, the second valves of 5-, 6- third valves,
7- check-valves, 8- pipeline purging gas valves, 9- is by pipeline purging pipeline, 10- conduits, 11- through-holes, the first floats of 12-, the second floats of 13-,
14- connecting rods, the second nozzles of 15-.
Specific implementation mode
The embodiment of the utility model is more fully described below with reference to accompanying drawings.Although showing this practicality in attached drawing
Two kinds of novel illustrative embodiments, however, it is to be appreciated that the utility model can be realized in a variety of manners, without should be by here
The embodiment of elaboration is limited.On the contrary, these embodiments are provided so that the utility model is more thorough and complete, and
And the scope of the utility model can be completely communicated to those skilled in the art.
The confined gas pipeline purging equipment for internal floating roof tank of exemplary embodiment according to the present utility model includes：
The top of knockout drum, knockout drum is equipped with the first nozzle and the second nozzle, and the first nozzle passes through the first pipe
Road is connected to by pipeline purging pipeline, and the second nozzle is connected to the top of internal floating roof tank, the bottom of knockout drum by second pipe
Portion is connected to the bottom of internal floating roof tank by third pipeline；
Conduit, conduit is vertically set in knockout drum, and the upper end of conduit is connected with the second nozzle, conduit
Tube wall be equipped with through-hole；
Double float connecting rod structures, double float connecting rod structures are set in conduit, including connecting rod and the both ends for being respectively arranged on connecting rod
The first float and the second float；
Valve group, valve group includes the first valve, the second valve, third valve and check-valves, wherein the first valve is arranged
In in first pipe, the second valve is set on second pipe, and third valve and check-valves may be contained on third pipeline, and the
Three valves are close to knockout drum, and check-valves is close to internal floating roof tank.
The work of the confined gas pipeline purging equipment for internal floating roof tank of exemplary embodiment according to the present utility model
Process is as follows：
Before starting pipeline purging, the first valve being set in first pipe, the third valve being set on third pipeline are opened
Door and the second valve being set on second pipe；
After starting pipeline purging, pipeline purging gas will be swept by the liquid in pipeline purging pipeline in knockout drum, due to third pipe
Road is equipped with check-valves, therefore liquid will not enter internal floating roof tank, and the liquid level of knockout drum starts to gradually rise, with liquid
Position gradually rises, and double float connecting rod structures gradually float, until the float of upper end clogs the second nozzle so that second pipe quilt
Closing；Continue to increase with liquid level in this way, knockout drum internal upper part gas is compressed, and pressure becomes larger, when the pressure
When more than static pressure force difference between knockout drum and internal floating roof tank, check-valves is opened, and is swept medium and passes through third pipeline quilt
It is pressed into internal floating roof tank；
After having been swept by the liquid in pipeline purging pipeline, pipeline purging gas initially enters knockout drum, leads to knockout drum
Interior liquid level continues to decline, and double float connecting rod structures are gradually reduced with liquid level, and the second nozzle is opened, the top of knockout drum
Again by being connected at the top of second pipe and internal floating roof tank, pipeline purging gas enters internal floating roof tank by second pipe
Top.It is rapid to close the first valve, the second valve and third valve when liquid level gauge to be found is less than predetermined fluid level.
The confined gas pipeline purging equipment for being used for internal floating roof tank can be such that pipeline purging gas enters above internal floating roof tank
Gas-phase space makes liquid phase enter the liquid Space of internal floating roof tank, to effectively realize gas-liquid two-phase separation, avoids pipeline purging
Disturbance of the gas to liquid phase.
In one example, the first float and the second float are hollow ball, and the cross section of conduit is round, outside hollow ball
Diameter is less than or equal to the internal diameter of conduit, and the outer diameter of hollow ball is more than the diameter of the second nozzle.To double float connecting rod structure energy
Enough as the raising and lowering of liquid level is substantially along movement in vertical direction, and it can effectively seal the second nozzle.
In one example, the tube wall of conduit is smooth, and the tube wall of conduit is evenly distributed with multiple through-holes from top to bottom.It is logical
Hole can be arranged along the circumferential angle interval with 180 degree of tube wall.
In one example, the first float and the second float are made of polytetrafluoroethylene (PTFE), or by other light material systems
At.
In one example, further include liquid level gauge for the confined gas pipeline purging equipment of internal floating roof tank, liquid level gauge is used for
The liquid level for detecting knockout drum, to realize real time monitoring.
In one example, knockout drum is vertical barrel type tank or both ends of the both ends with ellipsoidal head with circle
Lack the vertical barrel type tank of end socket.The size of knockout drum is unlimited, can be set according to practical operation demand.
In one example, by pipeline purging pipeline be equipped with pipeline purging gas valve, pipeline purging gas by pipeline purging gas valve into
Enter by pipeline purging pipeline.
In one example, pipeline purging gas is inert gas or other gases appropriate.
Embodiment
Fig. 1 shows that the confined gas pipeline purging for internal floating roof tank of exemplary embodiment according to the present utility model is set
Standby structural schematic diagram, as shown in Figure 1, the confined gas pipeline purging equipment for internal floating roof tank includes：
Knockout drum 1, the top of knockout drum 1 are equipped with the first nozzle and the second nozzle 15, and the first nozzle passes through the
One pipeline is connected to by pipeline purging pipeline 9, and the second nozzle 15 is connected to the top of internal floating roof tank 2, gas-liquid point by second pipe
Bottom from tank 1 is connected to the bottom of internal floating roof tank 2 by third pipeline；
Conduit 10, conduit is vertically set in knockout drum, and the upper end of conduit is connected with the second nozzle 15,
The tube wall of conduit 10 is equipped with through-hole 11；
Double float connecting rod structures, double float connecting rod structures are set in conduit 10, including connecting rod 14 and are respectively arranged on connecting rod 14
Both ends the first float 12 and the second float 13；
Valve group, valve group includes the first valve 4, the second valve 5, third valve 6 and check-valves 7, wherein the first valve 4
It is set in first pipe, the second valve 5 is set on second pipe, and third valve 6 and check-valves 7 may be contained within third pipeline
On, and third valve 6, close to knockout drum 1, check-valves 7 is close to internal floating roof tank 2.
Wherein, the first float 12 and the second float 13 are hollow ball, and the cross section of conduit 10 is circle, the outer diameter of hollow ball
Equal to the internal diameter of conduit 10, and the outer diameter of hollow ball is more than the diameter of the second nozzle 15.
Wherein, the tube wall of conduit 10 is evenly distributed with multiple through-holes from top to bottom.
Wherein, further include liquid level gauge 3 for the confined gas pipeline purging equipment of internal floating roof tank, liquid level gauge 3 is for detecting gas
The liquid level H of liquid knockout drum 1, to realize real time monitoring.
Wherein, pipeline purging gas valve 8 is equipped with by pipeline purging pipeline, pipeline purging gas is entered by pipeline purging gas valve 8 to be swept
Spool road 9.
The work of the confined gas pipeline purging equipment for internal floating roof tank of exemplary embodiment according to the present utility model
Process is as follows：
Before starting pipeline purging, pipeline purging gas valve 8 is opened, then opens the first valve being set in first pipe successively
4, the third valve 6 being set on third pipeline and the second valve 5 being set on second pipe；
After starting pipeline purging, pipeline purging gas will be swept by the liquid in pipeline purging pipeline 9 in knockout drum 1, due to third
Pipeline is equipped with check-valves 7, therefore liquid will not enter internal floating roof tank 2, and the liquid level of knockout drum 1 starts to gradually rise,
With gradually rising for liquid level, double float connecting rod structures gradually float, and when liquid level is increased to L, the first float 12 clogs second
Nozzle 15 so that second pipe is closed；Continuing to increase with liquid level in this way, knockout drum internal upper part gas is compressed,
Pressure becomes larger, and when the pressure is more than the static pressure force difference between knockout drum 1 and internal floating roof tank 2, check-valves 7 is beaten
It opens, is swept medium and internal floating roof tank 2 is pressed by third pipeline；
After having been swept by the liquid in pipeline purging pipeline 9, pipeline purging gas initially enters knockout drum 1, leads to gas-liquid separation
Liquid level in tank 1 continues to decline, and double float connecting rod structures are gradually reduced with liquid level, and the second nozzle 15 is opened, knockout drum 1
Top be connected with the top of internal floating roof tank 2 again by second pipe, pipeline purging gas is entered interior floating by second pipe
Push up the top of storage tank 2.It is rapid to close the first valve 4, the second valve 5 and third valve when liquid level gauge to be found is less than predetermined fluid level
Door 6.
The embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is also not necessarily limited to disclosed each embodiment.Without departing from the scope and spirit of embodiment described, for this skill
Many modifications and changes will be apparent from for the those of ordinary skill in art field.The selection of term used herein, purport
In the principle and practical application for best explaining embodiment, or other those of ordinary skill of the art is enable to understand this
The embodiment that text discloses.
Claims (10)
1. a kind of confined gas pipeline purging equipment for internal floating roof tank, which is characterized in that including：
Knockout drum, the top of the knockout drum are equipped with the first nozzle and the second nozzle, and first nozzle passes through the
One pipeline is connected to by pipeline purging pipeline, and second nozzle is connected to the top of internal floating roof tank, the gas by second pipe
The bottom of liquid knockout drum is connected to the bottom of the internal floating roof tank by third pipeline；
Conduit, the conduit are vertically set in the knockout drum, and the upper end of the conduit is managed with described second
Mouth is connected, and the tube wall of the conduit is equipped with through-hole；
Double float connecting rod structures, double float connecting rod structures are set in the conduit, including connecting rod and are respectively arranged on the company
First float and the second float at the both ends of bar；
Valve group, the valve group includes the first valve, the second valve, third valve and check-valves, wherein first valve
It is set in the first pipe, second valve is set on the second pipe, and the third valve and check-valves are equal
It is set on the third pipeline, and the third valve, close to the knockout drum, the check-valves is close to described interior floating
Push up storage tank.
2. the confined gas pipeline purging equipment according to claim 1 for internal floating roof tank, which is characterized in that described first
Float and the second float are hollow ball.
3. the confined gas pipeline purging equipment according to claim 2 for internal floating roof tank, which is characterized in that the conduit
Cross section be circle.
4. the confined gas pipeline purging equipment according to claim 3 for internal floating roof tank, which is characterized in that described hollow
The outer diameter of ball is less than or equal to the internal diameter of the conduit, and the outer diameter of the hollow ball is more than the diameter of second nozzle.
5. the confined gas pipeline purging equipment according to claim 1 for internal floating roof tank, which is characterized in that the conduit
Tube wall be evenly distributed with multiple through-holes from top to bottom.
6. the confined gas pipeline purging equipment according to claim 1 for internal floating roof tank, which is characterized in that described first
Float and the second float are made of polytetrafluoroethylene (PTFE).
7. the confined gas pipeline purging equipment according to claim 1 for internal floating roof tank, which is characterized in that further include liquid
Position meter, the liquid level gauge are used to detect the liquid level of the knockout drum.
8. the confined gas pipeline purging equipment according to claim 1 for internal floating roof tank, which is characterized in that the gas-liquid
Knockout drum is the vertical barrel type tank that vertical barrel type tank or both ends of the both ends with ellipsoidal head carry discount vibram outlet end socket.
9. the confined gas pipeline purging equipment according to claim 1 for internal floating roof tank, which is characterized in that described to be swept
Spool road is equipped with pipeline purging gas valve, and pipeline purging gas is entered described by pipeline purging pipeline by the pipeline purging gas valve.
10. the confined gas pipeline purging equipment according to claim 9 for internal floating roof tank, which is characterized in that described to sweep
Line gas is inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721681720.4U CN207671034U (en) | 2017-12-06 | 2017-12-06 | Confined gas pipeline purging equipment for internal floating roof tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721681720.4U CN207671034U (en) | 2017-12-06 | 2017-12-06 | Confined gas pipeline purging equipment for internal floating roof tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207671034U true CN207671034U (en) | 2018-07-31 |
Family
ID=62967246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721681720.4U Active CN207671034U (en) | 2017-12-06 | 2017-12-06 | Confined gas pipeline purging equipment for internal floating roof tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207671034U (en) |
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2017
- 2017-12-06 CN CN201721681720.4U patent/CN207671034U/en active Active
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