CN205331811U - Utilize vacuum pump to retrieve device of liquid nitrogen - Google Patents
Utilize vacuum pump to retrieve device of liquid nitrogen Download PDFInfo
- Publication number
- CN205331811U CN205331811U CN201521048681.5U CN201521048681U CN205331811U CN 205331811 U CN205331811 U CN 205331811U CN 201521048681 U CN201521048681 U CN 201521048681U CN 205331811 U CN205331811 U CN 205331811U
- Authority
- CN
- China
- Prior art keywords
- liquid nitrogen
- storage tank
- nitrogen storage
- vacuum pump
- transport pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides an utilize vacuum pump to retrieve device of liquid nitrogen, the device includes: a liquid nitrogen storage tank for the storage liquid nitrogen, a transport pipe way, with a liquid nitrogen storage tank links to each other, be used for with the liquid nitrogen transports to the low temperature equipment in, the 2nd transport pipe way, with low temperature equipment links to each other, the 2nd liquid nitrogen storage tank, with the 2nd transport pipe says and links to each other, is used for saving low temperature equipment pass through the 2nd transport pipe says that the conveying comes the liquid nitrogen, the 3rd transport pipe way, respectively with a liquid nitrogen storage tank and the 2nd liquid nitrogen storage tank links to each other, be used for with among the 2nd liquid nitrogen storage tank the liquid nitrogen transport to among the liquid nitrogen storage tank, the vacuum pump, with the 2nd liquid nitrogen storage tank links to each other, is used for reducing atmospheric pressure in the 2nd liquid nitrogen storage tank. The device provided by the utility model can make the liquid nitrogen rate of recovery reach more than 90%, greatly reduced low temperature equipment operating power consumption and cost.
Description
Technical field
This utility model relates to nitrogen gas recovering apparatus field, particularly relates to a kind of device utilizing vacuum pump to reclaim liquid nitrogen。
Background technology
Liquid nitrogen manufactures low temperature environment as low temperature cold source in this device。After generally liquid nitrogen uses, owing to liquid nitrogen recovery process flow process is complicated, cost recovery is higher, and therefore liquid nitrogen is mostly by emptying。Make the air separation unit liquid nitrogen of large usage quantity do long-term emptying for liquid nitrogen to process, not still a kind of serious energy waste, and the operating cost of device will be increased。Therefore it provides a kind of device liquid nitrogen can recycled, become current problem demanding prompt solution。
Utility model content
In view of the above problems, the application describes a kind of device utilizing vacuum pump to reclaim liquid nitrogen, and described device includes:
First liquid nitrogen storage tank, in order to store liquid nitrogen；
First transport pipeline, is connected with described first liquid nitrogen storage tank, in order to by described liquid nitrogen transport to low-temperature working device；
Second transport pipeline, is connected with described low-temperature working device；
Second liquid nitrogen storage tank, is connected with described second transport pipeline, transmits, by described second transport pipeline, the described liquid nitrogen of coming in order to store described low-temperature working device；
3rd transport pipeline, is connected with described first liquid nitrogen storage tank and described second liquid nitrogen storage tank respectively, in order to be transported in described first liquid nitrogen storage tank by the described liquid nitrogen in described second liquid nitrogen storage tank；
Vacuum pump, is connected with described second liquid nitrogen storage tank, in order to reduce the air pressure in described second liquid nitrogen storage tank。
It is also preferred that the left described device also includes gasifier, described gasifier is arranged between described second liquid nitrogen storage tank and described vacuum pump, and the low wet in order to described second liquid nitrogen storage tank to be transferred to described vacuum pump recovers room temperature。
It is also preferred that the left be provided with supercharger on described second liquid nitrogen storage tank, described supercharger is in order to increase the air pressure in described second liquid nitrogen storage tank。
It is also preferred that the left the capacity of described first liquid nitrogen storage tank is more than the capacity of described second liquid nitrogen storage tank。
It is also preferred that the left between described second transport pipeline and described second liquid nitrogen storage tank, be provided with valve between described second liquid nitrogen storage tank and described 3rd transport pipeline。
Technique scheme has the advantage that or beneficial effect: increase a small-sized liquid nitrogen storage tank (capacity of the second liquid nitrogen storage tank is less than the first liquid nitrogen storage tank) in this utility model and associated buck pressurizer and pipeline are done technological improvement process, realizing liquid nitrogen recycling。This device can make the liquid nitrogen response rate reach more than 90%, greatly reduces low-temperature working plant running energy consumption and cost。
Accompanying drawing explanation
With reference to appended accompanying drawing, to describe embodiment of the present utility model more fully。But, appended accompanying drawing is merely to illustrate and sets forth, is not intended that the restriction to this utility model scope。
Fig. 1 is the use view one of a kind of device utilizing vacuum pump to reclaim liquid nitrogen of this utility model；
Fig. 2 is the use view two of a kind of device utilizing vacuum pump to reclaim liquid nitrogen of this utility model；
Fig. 3 is the flow chart of a kind of method utilizing vacuum pump to reclaim liquid nitrogen。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, a kind of device utilizing vacuum pump to reclaim liquid nitrogen of this utility model is described in detail。
Embodiment one
As it is shown in figure 1, a kind of device utilizing vacuum pump to reclaim liquid nitrogen, including:
First liquid nitrogen storage tank 1, in order to store liquid nitrogen；
First transport pipeline 2, is connected with described first liquid nitrogen storage tank 1, in order to by described liquid nitrogen transport to low-temperature working device 01；
Second transport pipeline 3, is connected with low-temperature working device 01；
Second liquid nitrogen storage tank 4, is connected with described second transport pipeline 3, transmits, by described second transport pipeline 3, the liquid nitrogen of coming in order to store described low-temperature working device 01；
3rd transport pipeline 5, is connected with described first liquid nitrogen storage tank 1 and described second liquid nitrogen storage tank 4 respectively, in order to be transported in described first liquid nitrogen container by the liquid nitrogen in the second liquid nitrogen storage tank 4。
In the present embodiment, by increasing by a second small-sized liquid nitrogen storage tank 4, the liquid nitrogen in the first liquid nitrogen storage tank 1 is transported to the liquid nitrogen in low-temperature working device 01 and carries out of short duration storage, and be finally recycled back into storing to the first liquid nitrogen storage tank 1。Specifically, when low-temperature working device 01 needs liquid nitrogen to provide a low-temperature working environment, first liquid nitrogen storage tank 1 is transferred in low-temperature working device 01 by what liquid nitrogen was circulated by the first transport pipeline 2, and the liquid nitrogen in low-temperature working device 01 is transported in the second liquid nitrogen storage tank 4 by the second transport pipeline 3。Finally, in the second liquid nitrogen storage tank 4 after liquid nitrogen storage completely, by the 3rd transport pipeline 5, liquid nitrogen return is transported in the first liquid nitrogen storage tank 1。So, first liquid nitrogen storage tank 1 constantly transports liquid nitrogen in low-temperature working device 01, and the second liquid nitrogen storage tank 4 also ceaselessly obtains the liquid nitrogen in low-temperature working device 01 and it is transported to the first liquid nitrogen storage tank 1 again, thus forming a loop structure, it is achieved that the recycling of liquid nitrogen。
Further, described second liquid nitrogen storage tank 4 is also connected with a vacuum pump 6, in the course of the work, vacuum pump 6 is utilized to be extracted into lower than atmospheric pressure (0.103Mpa) by the air pressure in the second liquid nitrogen storage tank 4, the liquid nitrogen in low-temperature working device 01 such second liquid nitrogen storage tank 4 and low-temperature working device 01 is formed for a draught head, thus just can flow in the second liquid nitrogen storage tank 4。Additionally, due to the temperature of liquid nitrogen is very low, so when utilizing vacuum pump 6 to extract the gas in the second liquid nitrogen storage tank 4 out to form draught head, being easy for causing the damage of vacuum pump 6 because of low temperature。So, the present embodiment is also provided with a gasifier 7 between vacuum pump 6 and the second liquid nitrogen storage tank 4。When the second liquid nitrogen storage tank 4 is bled by vacuum pump 6, liquid nitrogen first passes through gasifier 7 and heats to gas shape, then just can flow in vacuum pump 6。This design, protects vacuum pump 6 not by the infringement of low temperature。
It addition, be additionally provided with supercharger 41 on described second liquid nitrogen storage tank 4, when the liquid nitrogen in described second liquid nitrogen storage tank 4 stores a certain amount of, closing vacuum pump 6, supercharger 41 is started working so that the air pressure in the second liquid nitrogen storage tank 4 starts to increase。When the air pressure in the second liquid nitrogen storage tank 4 is more than the air pressure of the first liquid nitrogen storage tank 1, the liquid nitrogen in the second liquid nitrogen storage tank 4 is delivered in the first liquid nitrogen storage tank 1 by the 3rd transport pipeline 5。It is worthy of note, between described second transport pipeline 2 and described second liquid nitrogen storage tank 4, between described second liquid nitrogen storage tank 4 and described 3rd transport pipeline 5, be provided with valve, be storage liquid nitrogen or release liquid nitrogen in order to control the second liquid nitrogen storage tank 4。
In a particular application, as in figure 2 it is shown, described low-temperature working device 01 can be two adsorption plants: the first adsorption plant 011 and the second adsorption plant 012, the two adsorption plant is all for the impurity in adsorbed gas at low temperatures, and both are that switching uses。When the first adsorption plant 011 carries out absorption work at low temperatures, the then discharge opeing post-heating desorbing of the second adsorption plant 012；When the second adsorption plant 012 carries out absorption work at low temperatures, the then discharge opeing post-heating desorbing of the first adsorption plant 011。
This utility model have employed to increase a small-sized liquid nitrogen storage tank (capacity of the second liquid nitrogen storage tank 4 is less than the first liquid nitrogen storage tank 1) in device and associated buck pressurizer and pipeline are done technological improvement and processes, and realizes liquid nitrogen recycling。This device can make the liquid nitrogen response rate reach more than 90%, greatly reduces low-temperature working device 01 operation energy consumption and cost。
Embodiment two
According to a kind of device utilizing vacuum pump to reclaim liquid nitrogen that above-described embodiment proposes, present embodiments provide a kind of method utilizing vacuum pump to reclaim liquid nitrogen。
As it is shown on figure 3, a kind of method utilizing vacuum pump to reclaim liquid nitrogen, including step:
When low-temperature working device 01 works, liquid nitrogen is transferred in described low-temperature working device 01 by the first liquid nitrogen storage tank 1 by the first transport pipeline 2；
Open vacuum pump 6 and gasifier 7, reduce the air pressure of the second liquid nitrogen storage tank 4；
Liquid nitrogen in low-temperature working device 01 is transferred in the second liquid nitrogen storage tank 4 by the second transport pipeline 3；
After a period of time, close described vacuum pump 6, open the supercharger 41 in the second liquid nitrogen storage tank 4；
Liquid nitrogen in second liquid nitrogen storage tank 4 is back in the first liquid nitrogen storage tank 1 by the 3rd transport pipeline 5。
Specifically, in the present embodiment, when low-temperature working device 01 works, liquid nitrogen is ceaselessly transported by the first liquid nitrogen storage tank 1 by the first transport pipeline 2 in low-temperature working device 01, then vacuum pump 6 and gasifier 7 are opened, to be reduced by the air pressure of the second liquid nitrogen storage tank 4 so that it is lower than atmospheric pressure。At this moment, the liquid nitrogen in low-temperature working device 01 can be transferred in the second liquid nitrogen storage tank 4 by the second transport pipeline 3。When the amount of liquid nitrogen in the second liquid nitrogen storage tank 4 reaches to a certain degree, close described vacuum pump 6, open supercharger 41, increase the pressure of the second liquid nitrogen storage tank 4, the liquid nitrogen in the second liquid nitrogen storage tank 4 is pressed in the first liquid nitrogen storage tank 1 by third channel。Then vacuum pump 6 and gasifier 7 are opened again, from low-temperature working device 01 sucking-off and being sent to the first liquid nitrogen storage tank 1 by liquid nitrogen of repetition。It addition, after the air pressure reducing described second liquid nitrogen storage tank, open the valve between described second liquid nitrogen storage tank 4 and described second transport pipeline 3；After the air pressure increased in described second liquid nitrogen storage tank 4, open the valve between described second liquid nitrogen storage tank 4 and described 3rd transport pipeline 3。
Vacuum pump 6 is utilized to be extracted into lower than atmospheric pressure (0.103Mpa) by the second liquid nitrogen storage tank 4, the low wet extracted out in second liquid nitrogen storage tank 4 recovers room temperature through gasifier 7 and enters vacuum pump 6 foundation and the pressure reduction of low-temperature working device 01, makes the liquid nitrogen of low-temperature working device 01 flow in the second liquid nitrogen storage tank 4；After end-of-job, the second liquid nitrogen storage tank 4 utilizes the supercharger 41 carried, and makes pressure in tank body raise, so as to higher than big liquid nitrogen storage tank (the first liquid nitrogen storage tank 1), liquid nitrogen is squeezed into the first liquid nitrogen storage tank 1。This method solve the liquid nitrogen serious problem of waste filled in use procedure, by the recovery of liquid nitrogen and recycle and can be substantially reduced production cost。
For a person skilled in the art, after reading described above, various changes and modifications will be apparent to undoubtedly。Therefore, appending claims should regard the whole variations and modifications containing true intention of the present utility model and scope as。In Claims scope, the scope of any and all equivalence and content, be all considered as still belonging in intention of the present utility model and scope。
Claims (5)
1. one kind utilizes the device that vacuum pump reclaims liquid nitrogen, it is characterised in that described device includes:
First liquid nitrogen storage tank, in order to store liquid nitrogen；
First transport pipeline, is connected with described first liquid nitrogen storage tank, in order to by described liquid nitrogen transport to low-temperature working device；
Second transport pipeline, is connected with described low-temperature working device；
Second liquid nitrogen storage tank, is connected with described second transport pipeline, transmits, by described second transport pipeline, the described liquid nitrogen of coming in order to store described low-temperature working device；
3rd transport pipeline, is connected with described first liquid nitrogen storage tank and described second liquid nitrogen storage tank respectively, in order to be transported in described first liquid nitrogen storage tank by the described liquid nitrogen in described second liquid nitrogen storage tank；
Vacuum pump, is connected with described second liquid nitrogen storage tank, in order to reduce the air pressure in described second liquid nitrogen storage tank。
2. the device utilizing vacuum pump to reclaim liquid nitrogen according to claim 1, it is characterized in that, described device also includes gasifier, described gasifier is arranged between described second liquid nitrogen storage tank and described vacuum pump, and the low wet in order to described second liquid nitrogen storage tank to be transferred to described vacuum pump recovers room temperature。
3. the device utilizing vacuum pump to reclaim liquid nitrogen according to claim 2, it is characterised in that being provided with supercharger on described second liquid nitrogen storage tank, described supercharger is in order to increase the air pressure in described second liquid nitrogen storage tank。
4. the device utilizing vacuum pump to reclaim liquid nitrogen according to claim 1, it is characterised in that the capacity of described first liquid nitrogen storage tank is more than the capacity of described second liquid nitrogen storage tank。
5. the device utilizing vacuum pump to reclaim liquid nitrogen according to claim 1, it is characterised in that between described second transport pipeline and described second liquid nitrogen storage tank, be provided with valve between described second liquid nitrogen storage tank and described 3rd transport pipeline。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048681.5U CN205331811U (en) | 2015-12-15 | 2015-12-15 | Utilize vacuum pump to retrieve device of liquid nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048681.5U CN205331811U (en) | 2015-12-15 | 2015-12-15 | Utilize vacuum pump to retrieve device of liquid nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205331811U true CN205331811U (en) | 2016-06-22 |
Family
ID=56207928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521048681.5U Active CN205331811U (en) | 2015-12-15 | 2015-12-15 | Utilize vacuum pump to retrieve device of liquid nitrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205331811U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402605A (en) * | 2015-12-15 | 2016-03-16 | 上海启元空分技术发展股份有限公司 | Device and method for recycling liquid nitrogen through vacuum pump |
| CN109659058A (en) * | 2019-01-02 | 2019-04-19 | 中国核电工程有限公司 | Filter the conveying device and system of radioactivity slurries |
-
2015
- 2015-12-15 CN CN201521048681.5U patent/CN205331811U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402605A (en) * | 2015-12-15 | 2016-03-16 | 上海启元空分技术发展股份有限公司 | Device and method for recycling liquid nitrogen through vacuum pump |
| CN105402605B (en) * | 2015-12-15 | 2018-08-14 | 上海启元空分技术发展股份有限公司 | A kind of device and method recycling liquid nitrogen using vacuum pump |
| CN109659058A (en) * | 2019-01-02 | 2019-04-19 | 中国核电工程有限公司 | Filter the conveying device and system of radioactivity slurries |
| CN109659058B (en) * | 2019-01-02 | 2021-07-30 | 中国核电工程有限公司 | Conveying device and system for filtering radioactive slurry |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105402605A (en) | Device and method for recycling liquid nitrogen through vacuum pump | |
| CN105526500A (en) | Liquid nitrogen recovering device and method | |
| CN205331811U (en) | Utilize vacuum pump to retrieve device of liquid nitrogen | |
| CN204127653U (en) | Reclaim the skid-mounted device of the remaining rock gas of long-tube trailer | |
| CN103490036B (en) | Positive-suction type lithium ion battery liquid injection box | |
| CN205606188U (en) | Liquid nitrogen recovery unit | |
| CN105953071A (en) | Device and method for automatically recovering liquid nitrogen in neon and helium separation process | |
| CN202078834U (en) | Radon reducing machine | |
| CN205933804U (en) | Biogas anaerobic fermentation and purification system | |
| CN203963503U (en) | High pressure helium recycle and reuse device in a kind of leak-testing | |
| CN202139220U (en) | Device reclaiming gas-liquid phase carbon dioxide | |
| CN206419180U (en) | Residual neat recovering system | |
| CN204411771U (en) | Tail acid gathering-device in isoleucine leaching process | |
| CN104930909A (en) | Cooling water circulating system | |
| CN205593217U (en) | Air -source heat pump waste heat recovery reuse system | |
| CN205037666U (en) | Cooling water circulating device | |
| CN202092369U (en) | Air source heat-cold integrated temperature control device | |
| CN204921304U (en) | Compressor dry gas seals recovery unit | |
| CN204947006U (en) | Sour device taken out by a kind of lead acid accumulator of efficient quick | |
| CN201364824Y (en) | Condenser oiling device | |
| CN203538261U (en) | Vacuum freeze drying device for tea leaves | |
| CN204113593U (en) | A kind of air compressor reclaiming heat energy | |
| CN207005726U (en) | A kind of compressed natural gas pressure-relief device of adaptive cold recovery | |
| CN202575929U (en) | Special packing device for volatile harmful liquid | |
| CN203500836U (en) | Liquid chlorine filling residual gas recovery system capable of saving power electricity consumption |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210701 Address after: 201800 rooms 202 and 204, building 3, 150 Heyu Road, Jiading District, Shanghai Patentee after: SHANGHAI QIYUAN GAS DEVELOPMENT Co.,Ltd. Address before: 201800 150 Heyu Road, Jiading District, Shanghai Patentee before: SHANGHAI QIYUAN AIR SEPARATE TECHNOLOGY DEVELOPMENT Co.,Ltd. |