CN201535434U - Limit charging device and low-temperature container with same - Google Patents
Limit charging device and low-temperature container with same Download PDFInfo
- Publication number
- CN201535434U CN201535434U CN2009201050939U CN200920105093U CN201535434U CN 201535434 U CN201535434 U CN 201535434U CN 2009201050939 U CN2009201050939 U CN 2009201050939U CN 200920105093 U CN200920105093 U CN 200920105093U CN 201535434 U CN201535434 U CN 201535434U
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- Prior art keywords
- low
- temperature
- limiting
- pipe
- charging device
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- Expired - Lifetime
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- 239000007788 liquid Substances 0.000 claims abstract description 49
- 239000012530 fluid Substances 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000005429 filling process Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000003949 liquefied natural gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Abstract
The utility model discloses a limit charging device and a low-temperature container with the same. A liquid charging pipe for charging low-temperature medium is arranged on the low-temperature container. The limit charging device is positioned in the low-temperature container and comprises a bearing pressure cavity, a drain pipe and a flow stop device, wherein the bearing pressure cavity is communicated with the exit end of the liquid charging pipe; the drain pipe is arranged on the top wall of the bearing pressure cavity for communicating the interiors of the bearing pressure cavity and the low-temperature container; and the flow stop device can move along with the rise and fall of liquid level in the low-temperature container, so as to seal the drain pipe when the liquid level reaches the set liquid level, and open the drain pipe when the liquid level does not reach the set liquid level. By adopting the limit charging device, the container can be charged without letting out the medium inside the container, thereby realizing nondestructive charging, avoiding resource waste, reducing cost, and at the same time protecting the environment.
Description
Technical field
The utility model relates to filling of cryogenic media, particularly relates to a kind of charging device and low-temperature (low temperature) vessel with it of limiting the quantity of.
Background technique
Cryogenic media as liquid oxygen, liquid nitrogen, liquid argon, LNG Liquefied natural gas (LNG) etc. is industrial raw material commonly used.Their operating temperature is lower, and is stored in the low-temperature (low temperature) vessel with liquid form usually.For example, the operating temperature of liquid nitrogen is usually about-196 ℃.Charge into from the source of filling the process of container at the cryogenic media that will liquefy, medium is vaporization constantly, causes container inner pressure to raise.This can make in the container and fill pressure reduction between the source and reduce even disappear, cause filling and can not proceed.In addition, container inner pressure is too high also can form potential safety hazard.
Therefore, general now employing emission type fills.As shown in Figure 1, be typically provided with topping up pipe 2, outlet pipe 3 on the existing low-temperature (low temperature) vessel 1.In filling process, one side utilizes that topping up pipe 2 fills, one side utilizes outlet pipe 3 to drain steam reducing container inner pressure, thereby keeps in the container and fill stable pressure reduction between the source.Yet a part of medium can emit with the form of steam.
In fact, be stored in normally vapor liquid equilibrium state of the interior cryogenic media of low-temperature (low temperature) vessel.Therefore, when filling, need control the fullness rate of liquid in container.In the prior art, on container 1, be provided with one usually and survey full packages 4.In filling process, survey full packages 4 and open, when wherein having liquid to flow out, show that container has reached the fullness rate of design.At this moment, need manually close the valve of each pipe on the valve in the source of filling and the container, fill stopping.Yet a part of medium can be discharged with the form of liquid.
Cryogenic media is through complicated manufacturing process and spend a large amount of additional source of energy and expense obtains.In existing container topping up mode, can be wasted inevitably from outlet pipe 3 and the medium of surveying full packages 4 discharges, this not only easy befouling environment also can cause the wasting of resources, can form potential safety hazard if deal with improperly in addition also.Waste how to avoid the filling process medium is a problem that urgency is to be solved.
In addition, existing topping up mode needs the staff to focus one's attention on, and in time opens and closes the valve of respective line.For example, if forgetting to open when filling surveys full valve 4, may cause the liquid in the container to surpass safe liquid level, thereby cause danger such as building the pressure, explode jar.
The model utility content
The technical problems to be solved in the utility model is, a kind of charging device of limiting the quantity of that is used for low-temperature (low temperature) vessel is provided, to reduce the waste of cryogenic media in filling process.
Another technical problem to be solved in the utility model is, a kind of low-temperature (low temperature) vessel is provided.
For achieving the above object, the utility model provides a kind of charging device of limiting the quantity of that is used for low-temperature (low temperature) vessel, and this low-temperature (low temperature) vessel is provided with the topping up pipe that is used to fill cryogenic media.The described charging device of limiting the quantity of is positioned at this low-temperature (low temperature) vessel, and comprises: pressure pocket is connected with the outlet end of this topping up pipe; Drain pipe is arranged on the roof of this pressure pocket, is used for this pressure pocket is connected with this low-temperature (low temperature) vessel inside; And the fluid stopping device, can move with the height of liquid level in this low-temperature (low temperature) vessel, seal this drain pipe when specifying liquid level, and when liquid level is specified in this liquid level no show, open this drain pipe to arrive in this liquid level.
Preferably, this fluid stopping device comprises: the fluid stopping piece is positioned at this pressure pocket and is used to seal this drain pipe; Floating drum is positioned at this pressure pocket and also can moves up and down with the height of this low-temperature (low temperature) vessel liquid level outward; And guide rod, be used for fixing and connect this fluid stopping piece and this floating drum.
Preferably, on the diapire of this pressure pocket, be provided with retaining pipe down, be used to limit this fluid stopping piece move down; This guide rod passes this time retaining pipe and enters in this pressure pocket to connect this fluid stopping piece.
Preferably, on this pressure pocket roof position, be provided with the guide pipe that matches with this guide rod corresponding to this drain pipe.Wherein, this guide rod passes this drain pipe and passes from the top of this guide pipe; And this guide pipe is provided with one or more liquid outlet openings, and this drain pipe is by this liquid outlet opening and this low-temperature (low temperature) vessel internal communication.
Preferably, the charging device of limiting the quantity of also comprises the position-limiting tube that is fixed to this pressure pocket, is used for matching with the outer wall of this floating drum with the movement direction that limits this floating drum axis along this drain pipe.
Preferably, the top of described position-limiting tube is provided with at least one opening, makes the pressure unanimity that this position-limiting tube is inside and outside.
Preferably, be fixed with the seal ring that matches with this floating drum outer wall on this position-limiting tube, the sealing ring is provided with groove to reduce the area of contact with this floating drum outer wall.
Preferably, the fitting surface that is used for cooperating with this drain pipe of described fluid stopping piece is the conical surface.
Preferably, this topping up pipe is welded on this pressure pocket, to reach predetermined join strength.
Preferably, the outlet end of this topping up pipe is positioned at this pressure pocket, and is provided with towards this pressure pocket sidewall and the outlet of this fluid stopping device dorsad.
Preferably, the outlet of this topping up pipe is set to enough greatly when reducing cryogenic media and enter pressure pocket the impact to this pressure pocket.
Preferably, the diameter of this charging device of limiting the quantity of 80mm between the 100mm, length at 100mm between the 150mm.
For achieving the above object, the utility model also provides a kind of low-temperature (low temperature) vessel of storing cryogenic media, which is provided with the topping up pipe that is used to fill this cryogenic media.In this low-temperature (low temperature) vessel, also be provided with the charging device of limiting the quantity of with said structure and characteristics or its combination.
Preferably, this charging device of limiting the quantity of is set at the position near the top of this low-temperature (low temperature) vessel.
Utilize the utility model, can be in need not discharging container container be filled under the situation of medium, thereby realized harmless filling, avoided the wasting of resources, reduced cost, help environmental protection simultaneously.In filling process of the present utility model, need not to open discharge pipe and the valve of surveying full packages on the low-temperature (low temperature) vessel; Even, according to need not to be provided with discharge pipe of the prior art on the low-temperature (low temperature) vessel of the present utility model and/or surveying full packages.By calculating the mounting point of the charging device of determining to limit the quantity of, can control the amount of liquid that charges into low-temperature (low temperature) vessel exactly, thereby stopped may exist in the prior art overcharge phenomenon and overvoltage danger (as fried jar).In addition, limit filling device of the present utility model can the actual demand specific design, thereby can satisfy the different filling rate requirement of client.
Below in conjunction with accompanying drawing and detailed mode of execution the utility model is elaborated.
Description of drawings
Fig. 1 is the structural representation of existing low-temperature (low temperature) vessel;
Fig. 2 is according to the structural representation that is provided with the low-temperature (low temperature) vessel of the charging device of limiting the quantity of of the present utility model;
Fig. 3 is the structural drawing of the charging device of limiting the quantity of among Fig. 2, and wherein drain pipe is in open mode; And
Fig. 4 is the structural drawing of charging device of limiting the quantity of, and wherein drain pipe is in closed state.
Embodiment
Fig. 2 shows according to low-temperature (low temperature) vessel 10 of the present utility model, and container is provided with topping up pipe 12.In container 10, also be provided with the charging device 20 of limiting the quantity of that links to each other with topping up pipe 12.As shown in Figure 3, the charging device 20 of limiting the quantity of comprises: the pressure pocket 21 that is connected with the outlet end 121 of topping up pipe 12; Be arranged on the roof 211 of pressure pocket 21, be used to be communicated with the drain pipe 22 that pressure pocket 21 is connected with the inside of low-temperature (low temperature) vessel 10; And, fluid stopping device 23.Fluid stopping device 23 can move up and down with the height of container inner medium liquid level, sealing drain pipe 22 when specifying liquid level to arrive in liquid level, and when liquid level is specified in the liquid level no show, open drain pipe 22.
According to a specific embodiment of the present utility model, as shown in Figure 3, fluid stopping device 23 comprises: be positioned at the fluid stopping piece 231 that pressure pocket 21 is used to seal drain pipe 22; Be positioned at the pressure pocket 21 outer floating drums 232 that also can move up and down with the height of container 10 liquid levels; And the guide rod 233 that fluid stopping piece 231 is fixedlyed connected with floating drum 232.Preferably, the fitting surface that is used for matching with drain pipe 22 of fluid stopping piece 231 is arranged to the conical surface or other sealing configurations, to improve the sealing effect of 231 pairs of drain pipes 22 of fluid stopping piece.
Preferably, be fixed with position-limiting tube 24 in the bottom of pressure pocket 21.Position-limiting tube 24 matches movement direction with restriction floating drum 232 along the axis of drain pipe 22 with the outer wall of floating drum 232, thereby restriction fluid stopping device 23 is with respect to the movement direction of drain pipe 22.At least one (being preferably a plurality of) opening 241 can be set on the top of position-limiting tube 24, make the inside and outside pressure unanimity of position-limiting tube 24, promptly consistent with container 10 pressure inside.In order to reduce the surface friction drag between floating drum 232 and the position-limiting tube 24 as far as possible, a circle seal ring 242 can be set on the inwall of position-limiting tube 24, and utilize sealing ring 241 to match with the outer wall of floating drum 232.On seal ring 241, also groove 243 can be set, further to reduce the area of contact of itself and floating drum outer wall.
Preferably, on the diapire 212 of pressure pocket 21, be provided with retaining pipe 214 down.Guide rod 233 passes down retaining pipe 214 and enters in the pressure pocket 21, thereby links to each other with fluid stopping piece 231.Following retaining pipe 214 is positioned at the below of fluid stopping piece 231.Like this, when liquid level was low in container 10, following retaining pipe 214 can limit moving down of fluid stopping piece 231.Preferably, also be provided with guide pipe 215 at pressure pocket roof 211 on corresponding to the position of drain pipe 22, this guide pipe is provided with at least one (being preferably a plurality of) liquid outlet opening 216, is used to make drain pipe 214 to be communicated with internal tank.Guide rod 233 can pass from drain pipe 22 and pass from the top of guide pipe 215.Following retaining pipe 214 and guide pipe 215 all can match with guide rod 233, with the movement direction of restriction guide rod 233 axis along drain pipe 22, thereby further limit the movement direction of fluid stopping device 23 with respect to drain pipe 22.
The medium that fills the source (not shown) from cryogenic media has bigger pressure usually.Here, topping up pipe 12 preferably is soldered on the roof of pressure pocket 21, reaching predetermined join strength, thereby guarantees that topping up pipe 12 can not twist, waves or fracture when the cryogenic liquide of big pressure enters pressure pocket 21.Pressure when entering pressure pocket 21, reduce its impact, the outlet 122 that is positioned at topping up pipe outlet end 121 can be arranged to enough greatly, as export 122 height and be set to suitable with the height of pressure pocket to pressure pocket 21 in order to reduce medium as far as possible.In addition, directly impact parts in the pressure pocket (as the guide rod 233 of fluid stopping device, drain pipe 22 etc.) for fear of entering cryogenic medias in the pressure pocket 21, the outlet 122 that is positioned at pressure pocket 21 can be arranged to towards the sidewall of pressure pocket 21 and fluid stopping device 23 dorsad.
Specify the process that fills cryogenic media to low-temperature (low temperature) vessel 10 of the present utility model below.
When container 10 fills cryogenic media, the liquid cryogenic media that fills in the source at first enters pressure pocket 21 from topping up pipe 12.At this moment, fluid stopping piece 231 since the effect of gravity away from drain pipe 22, thereby make the cryogenic medias in the pressure pocket 21 can enter into the inside of container 10 via drain pipe 22.Usually, the cryogenic media that fills in the source has than pressure bigger in the container to be filled and lower temperature.Because self volume of pressure pocket 21 is less, thereby the medium that leaves drain pipe 22 also has lower temperature, thereby can cool off the steam of the medium that accumulates in container 10 tops, even it is liquefied again.Like this, the pressure in the container 10 has obtained effective reduction, thereby need not to utilize outlet pipe that steam is discharged again.Preferably, the top of charging device 20 near container 10 of limiting the quantity of can be provided with, better the steam in the container is cooled off.
Along with the rising of liquid levels in the container 10, liquid increases gradually to the buoyancy that floating drum 232 produces, thereby makes and move on whole fluid stopping device 23 gradually.The structure and the structure of design fluid stopping device 23 make when the liquid container 10 in arrives the appointment liquid level of design, float to the position (as shown in Figure 4) that makes fluid stopping piece 231 seal drain pipes 22 on floating drum 232 is lucky.At this moment, the medium that enters pressure pocket 21 can not enter container 10 inside by drain pipe 22 again, is stopped from the source of filling to filling of container simultaneously.
According to the utility model, this stops and can carrying out automatically, for example, realizes by the variation in pressure that detects in the pressure pocket 21.Because the cryogenic media vaporization rate is very fast, and be full of liquid cryogenic media in pressure pocket 21 and the topping up pipe 12 basically, thereby the pressure in pressure pocket 21 and the topping up pipe 12 can rise rapidly when drain pipe 22 is closed, and for example can produce the pressure reduction up to 2～5bar in 1 second.This pressure reduction can hinder medium and enter pressure pocket 21 from topping up pipe 12, thereby makes the flow in the topping up pipe 12 reduce rapidly.External container can external pressure gauge or flowmeter detect the unexpected variation of this pressure or flow, and detecting when changing to being used to the source of filling to provide the pump of power to send shutoff signal.Thereby this pump quits work after receiving this shutoff signal and stops to fill.Here, pressure pocket 21 is designed to bear bigger pressure, for example smaller or equal to the pressure of 35bar.Certainly, also can be by stopping automatically that other signals are realized filling.Because what the utility model can be realized filling stops automatically, thereby the source of filling can be arranged on from low-temperature (low temperature) vessel place far away, promptly can realize long-range filling.
Do not have the over-charge protective device in the container of prior art, fill with higher pressure and be easy to the danger that causes container to overcharge.In addition, the existing mode that fills need be exitted when filling, and surveys the full packages trickle and also need through the regular hour to throttle down from observing, thereby to adopt too high pressure to fill be uneconomic.Yet the utility model low-temperature (low temperature) vessel takes place thereby avoid overcharging phenomenon owing to be provided with limit filling device thereby can stop the operation that fills to container immediately after arrive specifying liquid level; Nor need when filling, discharge medium.Thereby container of the present utility model can be filled with higher pressure, thereby can realize filling fast.For example, for less than the low-temperature (low temperature) vessel about 2000L, the time of filling is generally 3～20 minutes.
In addition, limit filling device structure of the present utility model is small and exquisite, and its diameter can be arranged on 80mm between the 100mm and length can be arranged on 100mm between the 150mm, thereby can the carrying volume of container not impacted basically.
As seen, the charging device 20 of limiting the quantity of of the present utility model is set, can be in need not discharging container container be filled under the situation of medium, thereby realized harmless filling by a end at the topping up pipe.For the low-temperature (low temperature) vessel that is provided with the charging device of limiting the quantity of, when filling medium, outlet pipe and the valve of surveying on the full packages (if being provided with these pipes) all can be closed.Even, can need not on low-temperature (low temperature) vessel, to be provided with in them one or all, as cancellation the survey full packages is set.
Though should be pointed out that by above-mentioned mode of execution the utility model is described, yet the utility model also can have other numerous embodiments.Under the prerequisite that does not break away from the utility model spirit and scope; those of ordinary skill in the art obviously can make various corresponding changes and distortion to the utility model, but these changes and distortion all should belong in the scope that the utility model claims and equivalent thereof protect.
Claims (14)
1. charging device of limiting the quantity of that is used for low-temperature (low temperature) vessel, this low-temperature (low temperature) vessel is provided with the topping up pipe that is used to fill cryogenic media, it is characterized in that, and the described charging device of limiting the quantity of is positioned at this low-temperature (low temperature) vessel and comprises:
Pressure pocket is connected with the outlet end of this topping up pipe;
Drain pipe is arranged on the roof of this pressure pocket, is used for this pressure pocket is connected with this low-temperature (low temperature) vessel inside; And
The liquid level that is used in described low-temperature (low temperature) vessel arrives the fluid stopping device of opening described drain pipe when sealing described drain pipe and the appointment of the liquid level no show in described low-temperature (low temperature) vessel liquid level when specifying liquid level, and this fluid stopping device can move with the height of liquid level in this low-temperature (low temperature) vessel.
2. the charging device of limiting the quantity of according to claim 1 is characterized in that, this fluid stopping device comprises:
The fluid stopping piece is positioned at this pressure pocket and is used to seal this drain pipe;
Floating drum is positioned at this pressure pocket and also can moves up and down with the height of this low-temperature (low temperature) vessel liquid level outward; And
Guide rod is used for fixing and connects this fluid stopping piece and this floating drum.
3. the charging device of limiting the quantity of according to claim 2 is characterized in that, is provided with retaining pipe down on the diapire of this pressure pocket, is used to limit this fluid stopping piece move down; This guide rod passes this time retaining pipe and enters in this pressure pocket to connect this fluid stopping piece.
4. the charging device of limiting the quantity of according to claim 3 is characterized in that, is provided with the guide pipe that matches with this guide rod on this pressure pocket roof position corresponding to this drain pipe, wherein,
This guide rod passes this drain pipe and passes from the top of this guide pipe; And
This guide pipe is provided with one or more liquid outlet openings, and this drain pipe is by this liquid outlet opening and this low-temperature (low temperature) vessel internal communication.
5. the charging device of limiting the quantity of according to claim 2 is characterized in that, also comprises the position-limiting tube that is fixed to this pressure pocket, is used for matching with the outer wall of this floating drum with the movement direction that limits this floating drum axis along this drain pipe.
6. the charging device of limiting the quantity of according to claim 5 is characterized in that the top of described position-limiting tube is provided with at least one opening, makes the pressure unanimity that this position-limiting tube is inside and outside.
7. the charging device of limiting the quantity of according to claim 5 is characterized in that, is fixed with the seal ring that matches with this floating drum outer wall on this position-limiting tube, and the sealing ring is provided with groove to reduce the area of contact with this floating drum outer wall.
8. the charging device of limiting the quantity of according to claim 2 is characterized in that, the fitting surface that is used for cooperating with this drain pipe of described fluid stopping piece is the conical surface.
9. the charging device of limiting the quantity of according to claim 1 is characterized in that, this topping up pipe is welded on this pressure pocket, to reach predetermined join strength.
10. the charging device of limiting the quantity of according to claim 9 is characterized in that the outlet end of this topping up pipe is positioned at this pressure pocket, and is provided with towards this pressure pocket sidewall and the outlet of this fluid stopping device dorsad.
11., it is characterized in that the height of the outlet of this topping up pipe is suitable with the height of described pressure pocket according to claim 9 or the 10 described charging devices of limiting the quantity of.
12. the charging device of limiting the quantity of according to claim 1 is characterized in that, the diameter of this charging device of limiting the quantity of 80mm between the 100mm, length at 100mm between the 150mm.
13. a low-temperature (low temperature) vessel of storing cryogenic media which is provided with the topping up pipe that is used to fill this cryogenic media, it is characterized in that, also is provided with in this low-temperature (low temperature) vessel as each described charging device of limiting the quantity of in the claim 1～12.
14. low-temperature (low temperature) vessel according to claim 13 is characterized in that, this charging device of limiting the quantity of is set at the position near the top of this low-temperature (low temperature) vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201050939U CN201535434U (en) | 2009-01-15 | 2009-01-15 | Limit charging device and low-temperature container with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201050939U CN201535434U (en) | 2009-01-15 | 2009-01-15 | Limit charging device and low-temperature container with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535434U true CN201535434U (en) | 2010-07-28 |
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ID=42535213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201050939U Expired - Lifetime CN201535434U (en) | 2009-01-15 | 2009-01-15 | Limit charging device and low-temperature container with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535434U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782179B (en) * | 2009-01-15 | 2011-07-20 | 南通中集罐式储运设备制造有限公司 | Limited filling device, low-temperature container with same and filling method |
| CN114133989A (en) * | 2021-11-30 | 2022-03-04 | 湖南成成油化科技股份有限公司 | Method for preparing and extracting palmitoleic acid and distillation device |
-
2009
- 2009-01-15 CN CN2009201050939U patent/CN201535434U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782179B (en) * | 2009-01-15 | 2011-07-20 | 南通中集罐式储运设备制造有限公司 | Limited filling device, low-temperature container with same and filling method |
| CN114133989A (en) * | 2021-11-30 | 2022-03-04 | 湖南成成油化科技股份有限公司 | Method for preparing and extracting palmitoleic acid and distillation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100728 Effective date of abandoning: 20090115 |