CN206738934U - A kind of liquefied gas unloading unit - Google Patents
A kind of liquefied gas unloading unit Download PDFInfo
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- CN206738934U CN206738934U CN201720546449.7U CN201720546449U CN206738934U CN 206738934 U CN206738934 U CN 206738934U CN 201720546449 U CN201720546449 U CN 201720546449U CN 206738934 U CN206738934 U CN 206738934U
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- fluid infusion
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- liquefied gas
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Abstract
A kind of liquefied gas unloading unit, including centrifugal pump, fluid infusion case, horizonally projected jet device, thrown up-straight device, vertical nozzle, drain cap, feed tube, three-way pipe, liquid back pipe, horizontal nozzles roll adjustment pipe and horizontal nozzles；Centrifugal pump inlet passes sequentially through horizonally projected jet device, thrown up-straight device, vertical nozzle, drain cap, feed tube and connected with inverted U liquefied gas suction line；Outlet of centrifugal pump is connected by three-way pipe liquid outlet with liquefied gas output pipe all the way, and another way connects through three-way pipe liquid return hole, liquid back pipe, horizontal nozzles roll adjustment pipe and horizontal nozzles with horizonally projected jet device successively；Opened up on thrown up-straight device liquid feeding end tube wall jagged；Fluid infusion box top sets liquid injection port, and bottom sets leakage fluid dram；Horizontal nozzles roll adjustment pipe enters line space to entrance port inside horizontal nozzles spout and horizonally projected jet device by helicitic texture and adjusted.This programme can prevent liquefied gas and fire danger, possess suction capacity, can eliminate the adverse effect of LNG gasifaction, centrifugal pump is used successfully to liquefied gas and unload.
Description
Technical field
The utility model belongs to liquefied gas and unloaded technical field, more particularly to a kind of liquefied gas unloading unit.
Background technology
Liquefied gas is as a kind of poisonous and harmful, easy gasification and extremely inflammable and explosive dangerous material, due to transporting and unloading at it
There is extremely strong danger, therefore it is required that liquefied gas allows for possessing high security when unloading during car.
Because the vapor pressure of liquefied gas is very high, and gasification rate is again very fast, therefore conventional pump is to be not used to
What liquefied gas was unloaded.By taking the tank car of liquefied gas transport as an example, it is divided into highway transportation tank car and railway transportation tank car again, because of peace
Complete to need, highway transportation tank car majority uses upper-unloading type, and railway transportation tank car is then all using upper-unloading type, i.e. liquefied gas unloads
Car mouth is located at the top of tank car.
Because the mouth of unloading of liquefied gas is located at the top of tank car, during liquefied gas is unloaded, liquefied gas suction line can be in
Existing inverted U, causes the liquefied gas suction line Louis of inverted U to occur depositing gas phenomenon, and Ordinary Centrifugal Pumps can not be evacuated, therefore,
Ordinary Centrifugal Pumps will be unable to be normally carried out liquefied gas and unload work when running into " gas of half liquid half " or " full gas " situation.
At present, can be used in medium unload work pump mainly have it is following several：
1., sliding-vane pump
The appearance and size of sliding-vane pump is little and compact-sized complexity, its by slide plate contacted with pump chamber cavity friction carry out it is close
Envelope, therefore the abrasion between slide plate and pump chamber cavity is unavoidable, and it is particularly evident in pumping, and rubbing can also cause
Heating, therefore the danger for the liquefied gas that ignites be present；In addition, sliding-vane pump requires high to the degree of purity of medium, and liquefied gas is miscellaneous
Matter content is universal higher, even if the degree of purity of medium meets to require, sliding-vane pump can only also deliver to 6m when carrying out gas-liquid delivery
Below；Therefore, sliding-vane pump is not appropriate for transportation of liquefied gas；
2., pump with swinging rotor
The suction capacity of pump with swinging rotor is stronger, and performance is better than sliding-vane pump, but it has pulsation phenomenon at work,
The gap for making rotor and leading between core easily enters impurity and causes to wear, and guide rod bearing also easily enters impurity and damaged；In addition,
Due to rotor and the gap very little between core is led, easily because friction produces heating or spark, therefore the danger that liquefied gas fires be present,
So pump with swinging rotor is not appropriate for transportation of liquefied gas；
3., commonly without sealed self priming pump
The pump housing commonly without sealed self priming pump is made up of volute casing, vapor-liquid separation chamber and fluid reservoir, and it has hydraulic loss
And return loss issues, operating efficiency is relatively low, and the impurity in medium easily blocks return port, causes self-priming to fail, therefore general
When it is not high to lead to the self-priming reliability without sealed self priming pump, and commonly poor suction capacity, self-priming be present without sealed self priming pump
Between long, high energy consumption and the defects of unsuitable winter outdoor work；Therefore, commonly it is not appropriate for conveying liquid without sealed self priming pump
Change gas；
4., diaphragm type self priming pump
Diaphragm type self priming pump with sliding-vane pump, pump with swinging rotor and commonly without sealed self priming pump compared with, although more suitable for
The conveying of liquefied gas, but restricted by inverted U liquefied gas suction line, easily there is cutout phenomenon, this is also diaphragm type self-priming
The defects of pump fails to overcome all the time.
Utility model content
The problem of existing for prior art, the utility model provide a kind of liquefied gas unloading unit, in the absence of because of friction
The situation of heating or spark is produced, has effectively prevented the danger that liquefied gas fires；Possess suction capacity, while can eliminate because of liquid
Change and adversely affected caused by gas gasification, and then make centrifugal pump unload for liquefied gas to become possibility.
To achieve these goals, the utility model adopts the following technical scheme that：A kind of liquefied gas unloading unit, including from
Heart pump, fluid infusion case, horizonally projected jet device, thrown up-straight device, vertical nozzle, drain cap and feed tube；The centrifugal pump is located at fluid infusion
Outside case, the outlet end of the horizonally projected jet device connects with the inlet seal of centrifugal pump, and the liquid feeding end of horizonally projected jet device is positioned at benefit
Inside liquid case, horizonally projected jet device carries out encapsulation process with the corresponding mounting hole on fluid infusion case tank wall；The thrown up-straight device is located at
Inside fluid infusion case, the outlet end of thrown up-straight device is connected with the liquid feeding end of horizonally projected jet device；The drain cap is located at fluid infusion case
Top, drain cap inner chamber are connected by vertical nozzle with the liquid feeding end of thrown up-straight device, and the spout direction of vertical nozzle is erected
Directly down；The liquid feeding end of the feed tube connects with the exit seal of inverted U liquefied gas suction line, the outlet end position of feed tube
Inside fluid infusion case, and feed tube outlet end and drain cap intracavity inter-connection, feed tube installation corresponding with fluid infusion case tank wall
Hole carries out encapsulation process；Fluid infusion hole is offered on the plug at end part plate of the horizonally projected jet device liquid feeding end；The fluid infusion case
Liquid injection port is located at the top of fluid infusion case.
Some breach are offered on the thrown up-straight device liquid feeding end tube wall close to fluid infusion box top tank wall.
Three-way pipe is installed in the outlet of the centrifugal pump, a way outlet and the sealing of liquefied gas output pipe of three-way pipe connect
Logical, another way outlet of three-way pipe is set to liquid return hole, and the liquid return hole of three-way pipe inside fluid infusion case with being connected.
Liquid back pipe, horizontal nozzles roll adjustment pipe and level are disposed between the liquid return hole and fluid infusion case of the three-way pipe
Nozzle；The liquid feeding end of the liquid back pipe connects with the liquid return hole sealing of three-way pipe, outlet end and the horizontal nozzles roll adjustment of liquid back pipe
The liquid feeding end sealing connection of pipe；The outlet end of the horizontal nozzles roll adjustment pipe is located inside fluid infusion case, and horizontal nozzles roll adjustment pipe
Outlet end is connected with the liquid feeding end of horizonally projected jet device, and horizontal nozzles roll adjustment pipe is carried out with the corresponding mounting hole on fluid infusion case tank wall
Encapsulation process；The horizontal nozzles are arranged on the outlet end of horizontal nozzles roll adjustment pipe, and horizontal nozzles are located at horizonally projected jet device
Liquid feeding end tubular body；Outlet end of the spout direction of the horizontal nozzles towards horizonally projected jet device.
External screw thread is provided with the outer tube wall of the horizontal nozzles roll adjustment pipe, is sealed in the end of horizonally projected jet device liquid feeding end
Screwed hole is offered on closure plate, horizontal nozzles roll adjustment pipe is coordinated by external screw thread and screwed hole, carries out horizontal nozzles spout and water
The spacing adjustment of entrance port inside jet stream device.
The bottom of the fluid infusion case is provided with leakage fluid dram.
The beneficial effects of the utility model：
Liquefied gas unloading unit of the present utility model, in the absence of the situation that heating or spark are produced because of friction, effectively prevent
The danger that liquefied gas fires；Possess suction capacity, while can eliminate because of adverse effect caused by LNG gasifaction, and then make
Centrifugal pump is unloaded for liquefied gas becomes possibility.
Brief description of the drawings
Fig. 1 is a kind of liquefied gas unloading unit structural representation of the present utility model；
In figure, 1-centrifugal pump, 2-fluid infusion case, 3-horizonally projected jet device, 4-thrown up-straight device, 5-vertical nozzle, 6-
Drain cap, 7-feed tube, 8-inverted U liquefied gas suction line, 9-fluid infusion hole, 10-liquid injection port, 11-three-way pipe, 12-
Liquefied gas output pipe, 13-liquid back pipe, 14-horizontal nozzles roll adjustment pipe, 15-horizontal nozzles, 16-leakage fluid dram.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of liquefied gas unloading unit, including centrifugal pump 1, fluid infusion case 2, horizonally projected jet device 3, thrown up-straight
Device 4, vertical nozzle 5, drain cap 6 and feed tube 7；The centrifugal pump 1 is located at outside fluid infusion case 2, and the horizonally projected jet device 3 goes out
Liquid end connects with the inlet seal of centrifugal pump 1, and the liquid feeding end of horizonally projected jet device 3 is located inside fluid infusion case 2, horizonally projected jet device 3 with
Corresponding mounting hole on the tank wall of fluid infusion case 2 carries out encapsulation process；The thrown up-straight device 4 is located inside fluid infusion case 2, thrown up-straight
The outlet end of device 4 is connected with the liquid feeding end of horizonally projected jet device 3；The drain cap 6 is located at the top of fluid infusion case 2, the inner chamber of drain cap 6
It is connected by vertical nozzle 5 with the liquid feeding end of thrown up-straight device 4, and the spout direction of vertical nozzle 5 is downwards；It is described enter
The liquid feeding end of liquid pipe 7 connects with the exit seal of inverted U liquefied gas suction line 8, and the outlet end of feed tube 7 is located at fluid infusion case 2
Inside, and the outlet end of feed tube 7 and the intracavity inter-connection of drain cap 6, feed tube 7 enter with the corresponding mounting hole on the tank wall of fluid infusion case 2
Row encapsulation process；Fluid infusion hole 9 is offered on the plug at end part plate of the liquid feeding end of horizonally projected jet device 3；The note of the fluid infusion case 2
Liquid mouth 10 is located at the top of fluid infusion case 2.
Some breach are offered on the liquid feeding end tube wall of thrown up-straight device 4 close to the top tank wall of fluid infusion case 2.
Three-way pipe 11, a way outlet and the liquefied gas output pipe of three-way pipe 11 are installed in the outlet of the centrifugal pump 1
12 sealing connections, another way outlet of three-way pipe 11 is set to liquid return hole, and the liquid return hole of three-way pipe 11 is connected with the inside of fluid infusion case 2
It is logical.
Liquid back pipe 13, horizontal nozzles roll adjustment pipe are disposed between the liquid return hole and fluid infusion case 2 of the three-way pipe 11
14 and horizontal nozzles 15；The liquid feeding end of the liquid back pipe 13 connects with the liquid return hole sealing of three-way pipe 11, and liquid back pipe 13 goes out liquid
Hold and connected with the sealing of the liquid feeding end of horizontal nozzles roll adjustment pipe 14；The outlet end of the horizontal nozzles roll adjustment pipe 14 is located at fluid infusion case 2
Inside, and the outlet end of horizontal nozzles roll adjustment pipe 14 is connected with the liquid feeding end of horizonally projected jet device 3, horizontal nozzles roll adjustment pipe 14 is with mending
Corresponding mounting hole on the tank wall of liquid case 2 carries out encapsulation process；The horizontal nozzles 15 are arranged on going out for horizontal nozzles roll adjustment pipe 14
Liquid end, and horizontal nozzles 15 are located at the liquid feeding end tubular body of horizonally projected jet device 3；The spout direction direction of the horizontal nozzles 15
The outlet end of horizonally projected jet device 3.
External screw thread is provided with the outer tube wall of the horizontal nozzles roll adjustment pipe 14, at the end of the liquid feeding end of horizonally projected jet device 3
Screwed hole is offered on portion's plugging plate, horizontal nozzles roll adjustment pipe 14 is coordinated by external screw thread and screwed hole, carries out horizontal nozzles 15
Spout and the spacing of the inside entrance port of horizonally projected jet device 3 adjust., can be by gas by the acceleration pressurization of horizonally projected jet device 3
Liquefied gas under change state re-compresses back liquid, but the spout of horizontal nozzles 15 and the spacing of the inside entrance port of horizonally projected jet device 3
It is larger to the performance impact of centrifugal pump 1, therefore adjustment spacing for convenience, coordinate and can easily solve with screwed hole by external screw thread
Certainly problem.Further, if the horizontal nozzles 15 initially chosen are ineffective, coordinated by external screw thread and screwed hole, then can be light
The replacing of the existing horizontal nozzles 15 of pine nut, until making device obtain satisfied flow lift parameter.
The bottom of the fluid infusion case 2 is provided with leakage fluid dram 16.
Illustrate first use process of the present utility model below in conjunction with the accompanying drawings：
First, the liquefied gas that the grafting of inverted U liquefied gas suction line 8 enters at the top of tank car fluid reservoir is unloaded mouth, mended simultaneously
Liquid case 2 has filled liquefied gas in advance.
Start centrifugal pump 1, when centrifugal pump 1 just starts, the liquefied gas of liquid had no in inverted U liquefied gas suction line 8,
And centrifugal pump 1 is in order to normal work, it first passes through fluid infusion hole 9 and sucks in fluid infusion case 2 liquid medium to prestore, herein
During, the gas medium in inverted U liquefied gas suction line 8 will also be discharged pipeline under suction, and pass through feed liquor successively
Pipe 7, drain cap 6, vertical nozzle 5 and thrown up-straight device 4 enter horizonally projected jet device 3, and in horizonally projected jet device 3 and by fluid infusion hole
The 9 liquid medium mixing entered, are discharged finally by the outlet of centrifugal pump 1.
Meanwhile by the liquid return hole of three-way pipe 11, some liquid medium is adjusted through liquid back pipe 13, horizontal nozzles successively
Horizonally projected jet device 3 is back to again away from pipe 14 and horizontal nozzles 15, under the acceleration pressurization of horizonally projected jet device 3, originally
Liquefied gas through gasification will be recompressed back liquid, and finally enter together with the liquefied gas being inhaled into tank car fluid reservoir from
Heart pump 1, finally discharged by the outlet of centrifugal pump 1, it is achieved thereby that the stabilization of liquefied gas is unloaded, while also meet gas-liquid delivery
Under self-priming.
In addition, when the liquid medium in drain cap 6 enters thrown up-straight device 4 by vertical nozzle 5, it can also sweep along and mend
The gas medium of the inner top layer of liquid case 2, it is set to be inhaled into thrown up-straight device 4 from the breach on the liquid feeding end tube wall of thrown up-straight device 4
It is interior, ensure that the liquid medium in fluid infusion case 2 is in all the time and fill state.
Scheme in embodiment simultaneously is not used to limit scope of patent protection of the present utility model, all without departing from the utility model
Carried out by equivalence enforcement or change, be both contained in the scope of the claims of this case.
Claims (6)
- A kind of 1. liquefied gas unloading unit, it is characterised in that：Including centrifugal pump, fluid infusion case, horizonally projected jet device, thrown up-straight device, Vertical nozzle, drain cap and feed tube；The centrifugal pump is located at outside fluid infusion case, the outlet end of the horizonally projected jet device and centrifugation The inlet seal connection of pump, the liquid feeding end of horizonally projected jet device is located inside fluid infusion case, on horizonally projected jet device and fluid infusion case tank wall Corresponding mounting hole carries out encapsulation process；The thrown up-straight device is located inside fluid infusion case, outlet end and the level of thrown up-straight device The liquid feeding end of ejector is connected；The drain cap is located at fluid infusion box top, and drain cap inner chamber is by vertical nozzle with penetrating vertically The liquid feeding end of stream device is connected, and the spout direction of vertical nozzle is downwards；The liquid feeding end of the feed tube liquefies with inverted U The exit seal connection of gas suction line, the outlet end of feed tube are located inside fluid infusion case, and feed tube outlet end and drain cap Intracavity inter-connection, feed tube carry out encapsulation process with the corresponding mounting hole on fluid infusion case tank wall；In the horizonally projected jet device feed liquor Fluid infusion hole is offered on the plug at end part plate at end；The liquid injection port of the fluid infusion case is located at the top of fluid infusion case.
- A kind of 2. liquefied gas unloading unit according to claim 1, it is characterised in that：Close to fluid infusion box top case Some breach are offered on the thrown up-straight device liquid feeding end tube wall of wall.
- A kind of 3. liquefied gas unloading unit according to claim 1, it is characterised in that：Installed in the outlet of the centrifugal pump There is three-way pipe, a way outlet of three-way pipe connects with the sealing of liquefied gas output pipe, and another way outlet of three-way pipe is set to back liquid Mouthful, and the liquid return hole of three-way pipe inside fluid infusion case with being connected.
- A kind of 4. liquefied gas unloading unit according to claim 3, it is characterised in that：The three-way pipe liquid return hole with Liquid back pipe, horizontal nozzles roll adjustment pipe and horizontal nozzles are disposed between fluid infusion case；The liquid feeding end of the liquid back pipe and threeway The liquid return hole sealing connection of pipe, the outlet end of liquid back pipe connect with the liquid feeding end sealing of horizontal nozzles roll adjustment pipe；The horizontal spray The outlet end of mouth roll adjustment pipe is located inside fluid infusion case, and horizontal nozzles roll adjustment pipe outlet end is connected with the liquid feeding end of horizonally projected jet device Logical, horizontal nozzles roll adjustment pipe carries out encapsulation process with the corresponding mounting hole on fluid infusion case tank wall；The horizontal nozzles are arranged on water The outlet end of flat nozzle roll adjustment pipe, and horizontal nozzles are located at the liquid feeding end tubular body of horizonally projected jet device；The horizontal nozzles Outlet end of the spout direction towards horizonally projected jet device.
- A kind of 5. liquefied gas unloading unit according to claim 4, it is characterised in that：In the horizontal nozzles roll adjustment pipe External screw thread is provided with outer tube wall, screwed hole is offered on the plug at end part plate of horizonally projected jet device liquid feeding end, horizontal nozzles are adjusted Coordinated away from pipe by external screw thread and screwed hole, carry out horizontal nozzles spout and the spacing of entrance port inside horizonally projected jet device adjusts.
- A kind of 6. liquefied gas unloading unit according to claim 1, it is characterised in that：Set in the bottom of the fluid infusion case There is leakage fluid dram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720546449.7U CN206738934U (en) | 2017-05-16 | 2017-05-16 | A kind of liquefied gas unloading unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720546449.7U CN206738934U (en) | 2017-05-16 | 2017-05-16 | A kind of liquefied gas unloading unit |
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| Publication Number | Publication Date |
|---|---|
| CN206738934U true CN206738934U (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720546449.7U Active CN206738934U (en) | 2017-05-16 | 2017-05-16 | A kind of liquefied gas unloading unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953162A (en) * | 2018-10-18 | 2018-12-07 | 辽宁格瑞特泵业有限公司 | A kind of Self-priming device of centrifugal pump for easy crystal medium |
-
2017
- 2017-05-16 CN CN201720546449.7U patent/CN206738934U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953162A (en) * | 2018-10-18 | 2018-12-07 | 辽宁格瑞特泵业有限公司 | A kind of Self-priming device of centrifugal pump for easy crystal medium |
| CN108953162B (en) * | 2018-10-18 | 2024-02-06 | 辽宁格瑞特泵业有限公司 | Self-priming device of centrifugal pump for medium easy to crystallize |
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