CN220081615U - Cryopump blows off ground protection device - Google Patents
Cryopump blows off ground protection device Download PDFInfo
- Publication number
- CN220081615U CN220081615U CN202320427120.4U CN202320427120U CN220081615U CN 220081615 U CN220081615 U CN 220081615U CN 202320427120 U CN202320427120 U CN 202320427120U CN 220081615 U CN220081615 U CN 220081615U
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- CN
- China
- Prior art keywords
- low
- pipeline
- cryopump
- temperature liquid
- liquid nitrogen
- 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.)
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000007788 liquid Substances 0.000 claims abstract description 62
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 37
- 238000007664 blowing Methods 0.000 claims abstract description 31
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims 3
- 238000000926 separation method Methods 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract 2
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 11
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model relates to a rectification system of an air separation device, in particular to a low-temperature pump blowing ground protection device. The low-pressure liquid nitrogen condensate recovery device structurally comprises a low-temperature liquid nitrogen blowing pipeline and a low-temperature liquid oxygen blowing pipeline, wherein a liquid receiving tank is arranged below the low-temperature liquid nitrogen blowing pipeline and the low-temperature liquid oxygen blowing pipeline, a low-pressure steam pipeline is arranged in the liquid receiving tank, one side of the low-pressure steam pipeline is connected with a low-pressure steam source through an air inlet pipeline, and the other side of the low-pressure steam pipeline is connected with a steam condensate recovery network through an air outlet pipeline. After the ground protection device is blown off by the cryogenic pump, the cryogenic pump can be used for evaporating the blown-off liquid, so that the damage to nearby foundations is avoided, the safe and stable operation of dynamic and static equipment is ensured, and the safe and stable operation of the air separation device is further ensured.
Description
Technical Field
The utility model relates to a rectification system of an air separation device, in particular to a low-temperature pump blowing ground protection device.
Background
Under the prior art, 28000Nm 3 In the air separation device of the compression flow in the double pumps of/h, the rectification system is used as the core of the air separation device, and the main function of the air separation device is to separate and rectify air to produce qualified oxygen and nitrogen products. The liquid oxygen pump and the liquid nitrogen pump are used as important equipment of the rectification system, and the safe operation of the liquid oxygen pump and the liquid nitrogen pump is related to the stable operation of an air separation device and a follow-up system of a whole plant. In the running process of the cryogenic pump, the timing exhaust is needed, and especially, the reflux blowing of the liquid nitrogen pump is needed to keep a certain opening all the time, so that the cavitation of the cryogenic pump is prevented. Because the boiling points of liquid oxygen and liquid nitrogen are-183 and-196 ℃, the damage of low-temperature liquid to nearby foundations caused by direct discharge to the ground is excessive, the pulverization of the ground is easy to cause, the pits are more, the foundation is easy to sink during long-time operation, static equipment such as nearby low-temperature storage tanks can be inclined, and the safe operation of the system is at great risk.
Disclosure of Invention
In order to solve the problems in the prior art, the low-temperature pump blowing ground protection device provided by the utility model can ensure smooth winding pipe and no freezing and blocking, simultaneously saves steam consumption, avoids blowing liquid from being directly discharged to the ground, damages the nearby ground and ensures safe and stable operation of nearby dynamic and static equipment.
The technical scheme adopted by the utility model is as follows:
the utility model provides a cryopump blows off ground protection device, includes low temperature liquid nitrogen blow off pipeline and low temperature liquid oxygen blow off pipeline, low temperature liquid nitrogen blow off pipeline and low temperature liquid oxygen blow off pipeline below set up the liquid receiving groove, the liquid receiving groove in set up low pressure steam pipeline, low pressure steam pipeline one side connect low pressure steam source through the air inlet pipeline, the opposite side is through giving vent to anger the pipeline connection steam condensate return pipe net.
Preferably, the low-temperature liquid nitrogen blowing pipeline comprises a low-temperature liquid nitrogen pump, one side of the low-temperature liquid nitrogen pump is connected with a low-temperature liquid nitrogen source, and the other side of the low-temperature liquid nitrogen pump is connected with a liquid nitrogen blowing pipeline provided with a low-temperature liquid nitrogen control valve.
Preferably, the low-temperature liquid oxygen blowing pipeline comprises a low-temperature liquid oxygen pump, one side of the low-temperature liquid oxygen pump is connected with a low-temperature liquid oxygen source, and the other side of the low-temperature liquid oxygen pump is connected with a liquid oxygen blowing pipeline provided with a low-temperature liquid oxygen control valve.
Preferably, the air inlet pipeline is provided with a liquid receiving tank inlet valve.
Preferably, the air outlet pipeline is provided with a liquid receiving groove outlet valve.
Preferably, the low pressure steam line is a spiral wound pipe.
The technical scheme provided by the utility model has the beneficial effects that:
according to the ground protection device for blowing off of the cryopump, the liquid receiving groove is arranged below the cryopump (the oxygen pump and the nitrogen pump), the winding pipe is additionally arranged in the liquid receiving groove, low-pressure steam is introduced into the winding pipe, the stop valves are additionally arranged at the inlet and the outlet ends of the liquid receiving groove, the cryopump blows off liquid to enter the liquid receiving groove and then is evaporated into the atmosphere by the steam in the winding pipe, and meanwhile the steam in the winding pipe is condensed and then is collected into the steam condensate pipe network, so that the smoothness and the freezing blocking resistance of the winding pipe are ensured, meanwhile, the consumption of the steam is also saved, the direct discharge of the blowing off liquid to the ground is avoided, the damage to nearby foundations is caused, and the safe and stable operation of nearby dynamic and static equipment is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a cryopump purge ground protection device of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.
Example 1
As shown in figure 1, a low-temperature pump blowing ground protection device comprises a low-temperature liquid nitrogen blowing pipeline and a low-temperature liquid oxygen blowing pipeline, wherein a liquid receiving tank 1 is arranged below the low-temperature liquid nitrogen blowing pipeline and the low-temperature liquid oxygen blowing pipeline, a low-pressure steam pipeline 2 is arranged in the liquid receiving tank 1, one side of the low-pressure steam pipeline 2 is connected with a low-pressure steam source through an air inlet pipeline 3, and the other side of the low-pressure steam pipeline is connected with a steam condensate return pipe network through an air outlet pipeline 4.
In the embodiment, the low-temperature liquid nitrogen blowing pipeline comprises a low-temperature liquid nitrogen pump 5, one side of the low-temperature liquid nitrogen pump 5 is connected with a low-temperature liquid nitrogen source, and the other side of the low-temperature liquid nitrogen pump 5 is connected with a liquid nitrogen blowing pipeline 7 provided with a low-temperature liquid nitrogen control valve 6.
The low-temperature liquid oxygen blowing pipeline comprises a low-temperature liquid oxygen pump 8, one side of the low-temperature liquid oxygen pump 8 is connected with a low-temperature liquid oxygen source, and the other side of the low-temperature liquid oxygen pump 8 is connected with a liquid oxygen blowing pipeline 10 provided with a low-temperature liquid oxygen control valve 9.
The intake pipe 3 of this embodiment is provided with a liquid receiving tank inlet valve 11.
The outlet pipeline 4 is provided with a liquid receiving groove outlet valve 12.
The low pressure steam line 2 of this embodiment is a spirally wound tube.
According to the ground protection device for blowing off by the cryopump, the liquid receiving groove is arranged below the blowing off of the cryopump (the oxygen pump and the nitrogen pump), the winding pipe (phi 10 stainless steel pipe) is additionally arranged in the liquid receiving groove, low-pressure steam is introduced into the winding pipe, the stop valves are additionally arranged at the inlet and the outlet ends of the liquid receiving groove, the vapor in the winding pipe is evaporated into the atmosphere after the blowing off liquid of the cryopump enters the liquid receiving groove, and meanwhile, the vapor in the winding pipe is condensed and then is collected into a vapor condensate pipe network, so that smoothness of the winding pipe is ensured, freezing blockage is avoided, and consumption of the vapor is saved. The blowing liquid is prevented from being directly discharged to the ground, damage to nearby foundations is avoided, and safe and stable operation of nearby dynamic and static equipment is ensured.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (6)
1. The utility model provides a cryopump blows off ground protection device, includes low temperature liquid nitrogen blow off pipeline and low temperature liquid oxygen blow off pipeline, its characterized in that, low temperature liquid nitrogen blow off pipeline and low temperature liquid oxygen blow off pipeline below set up the liquid receiving groove, the liquid receiving groove in set up low pressure steam line, low pressure steam line one side connect low pressure steam source through the air inlet line, the opposite side is through giving vent to anger the pipeline connection steam condensate return pipe net.
2. The low-temperature pump blowing ground protection device according to claim 1, wherein the low-temperature liquid nitrogen blowing pipeline comprises a low-temperature liquid nitrogen pump, one side of the low-temperature liquid nitrogen pump is connected with a low-temperature liquid nitrogen source, and the other side of the low-temperature liquid nitrogen pump is connected with a liquid nitrogen blowing pipeline provided with a low-temperature liquid nitrogen control valve.
3. The cryopump-flushing ground protection device of claim 1, wherein the cryopump-flushing line includes a cryopump, one side of the cryopump is connected to a cryopump oxygen source, and the other side is connected to a liquid oxygen-flushing line provided with a cryopump oxygen control valve.
4. The cryopump blowdown ground protection device of claim 1, wherein the intake pipe is provided with a sump inlet valve.
5. The cryopump blowdown ground protection apparatus of claim 1, wherein the outlet conduit is provided with a sump outlet valve.
6. The cryopump blowdown ground protection apparatus of claim 1, wherein the low pressure steam line is a spiral wound pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320427120.4U CN220081615U (en) | 2023-03-08 | 2023-03-08 | Cryopump blows off ground protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320427120.4U CN220081615U (en) | 2023-03-08 | 2023-03-08 | Cryopump blows off ground protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220081615U true CN220081615U (en) | 2023-11-24 |
Family
ID=88818449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320427120.4U Active CN220081615U (en) | 2023-03-08 | 2023-03-08 | Cryopump blows off ground protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220081615U (en) |
-
2023
- 2023-03-08 CN CN202320427120.4U patent/CN220081615U/en active Active
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