CN109488563B - High-vacuum air-cooling pump device and method - Google Patents
High-vacuum air-cooling pump device and method Download PDFInfo
- Publication number
- CN109488563B CN109488563B CN201811566285.XA CN201811566285A CN109488563B CN 109488563 B CN109488563 B CN 109488563B CN 201811566285 A CN201811566285 A CN 201811566285A CN 109488563 B CN109488563 B CN 109488563B
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- Prior art keywords
- pipe
- cold
- cold pump
- liquid
- vacuum
- 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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Links
- 238000001816 cooling Methods 0.000 title abstract description 8
- 238000000034 method Methods 0.000 title abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 85
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/064—Cooling by a cooling jacket in the pump casing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model provides a high vacuum air cooling pump device and method, it includes shell body subassembly (1), cold pump inner assembly (2), insulating tube subassembly (3), feed liquor pipe (4), drain pipe (5), fixed bolster (6) and heat preservation (7), cold pump inner assembly (2) and fixed bolster (6) all set up inside shell body subassembly (1), heat preservation (7) set up in shell body subassembly (1) outside, feed liquor pipe (4) and drain pipe (5) periphery in shell body subassembly (1) outside all overlap and establish insulating tube subassembly (3), are taken out into after certain vacuum in the casing, are taken out the vacuum degree of product (C) and have hardly been improved again, pass through feed liquor pipe (4) at this moment and let in liquid nitrogen, reduce the temperature of space in the casing rapidly, reduced pressure, make the residual gas in the product (C) taken out get into the casing rapidly, finally take out by vacuum pump unit (A). The device greatly improves the vacuum degree of the pumped product and greatly shortens the vacuumizing time.
Description
Technical Field
The invention relates to the technical field of vacuumizing, in particular to a high-vacuum air-cooling pump device and a method.
Background
With the development of modern technology, the current vacuum technology has an increasingly wide application range in the aspects of industry, commerce and the like. However, in the prior art, when the product to be pumped is pumped to a certain vacuum degree, the vacuum degree of the interior of the product to be pumped becomes very slow or the limit of the vacuum pump unit is reached, and the vacuum degree of the product to be pumped is difficult to increase.
At present, the Chinese patent with the publication number of CN104832398B discloses vacuumizing equipment, which is provided with a filter valve, reduces the influence of residues in gas on high-pressure vacuum pumping, adds a low vacuum gauge and a high vacuum gauge to accurately measure the inside of a system, controls the precision of the equipment, ensures the air inlet stability by adopting a multi-valve serial connection mode, and selects a proper sealing mode to improve the tightness of a vacuum system, thereby reducing the air leakage rate of the system and improving the safety performance of the equipment. However, it still has the technical problems that the efficiency is slow after the pumped product reaches a certain vacuum degree, and the vacuum degree in the product cannot be further improved.
Therefore, the current technology obviously cannot achieve the purpose of greatly shortening the vacuumizing time and improving the vacuumizing efficiency while improving the vacuum degree in the vacuumized product.
Disclosure of Invention
The invention aims to solve the problems in the background problems and provides equipment for greatly shortening the vacuumizing time and improving the vacuumizing efficiency while improving the vacuum degree in a pumped product.
The technical scheme adopted by the invention for realizing the functions is as follows: a high vacuum air-cooling pump device comprises an outer shell component, an inner cold pump component, a liquid inlet pipe and a liquid outlet pipe;
the outer housing assembly includes a cold pump housing;
the cold pump inner assembly is arranged in the cold pump shell and is communicated with the liquid inlet pipe and the liquid outlet pipe;
the cold pump inner assembly comprises a plurality of liquid storage bags and a plurality of sections of cold coils, the liquid storage bags and the cold coils are connected in a staggered manner, and a supporting pipe is arranged between every two adjacent liquid storage bags;
an air inlet and an air outlet are formed in the cold pump shell; the air outlet is used for connecting a vacuum pump unit, and the air inlet is used for connecting a pumped product.
The liquid inlet pipe is communicated with a cold coil pipe at the inlet end of the inner assembly of the cold pump through a three-way joint, and the liquid inlet pipe is divided into two coils after being connected with the three-way joint.
The liquid outlet pipe is communicated with a cold coil pipe at the outlet end of the inner assembly of the cold pump through a three-way joint, and the liquid outlet pipe is divided into two coils after being connected with the three-way joint.
The number of the air inlets is one or more.
And two sides of the cold pump inner assembly are fixed through fixed supports.
The liquid outlet pipe and the liquid inlet pipe are arranged on the same side of the cold pump housing.
The liquid storage bag comprises a cylinder section, and sealing heads are arranged on the left side and the right side of the cylinder section; the liquid storage bag is transversely arranged in the cold pump shell.
An insulation layer is arranged on the outer wall of the outer shell assembly; and the periphery of the liquid inlet pipe and the liquid outlet pipe at the outer side of the cold pump shell are sleeved with heat insulation sleeve assemblies.
The heat insulation sleeve assembly comprises an inner pipe, a middle pipe and an outer pipe which are sequentially arranged from inside to outside, the inner pipe is sleeved on a liquid inlet pipe or a liquid outlet pipe, the outer side end face of the inner pipe is sealed through a connecting ring I, the inner side end face of the inner pipe and the inner side end face of the middle pipe are sealed through a connecting ring II, and the outer side end face of the outer pipe and the outer side end face of the middle pipe are sealed through a connecting ring III.
The application method of the high-vacuum cold pump device is characterized by comprising the following steps of: firstly, connecting an exhaust port of a high vacuum cold pump device with the high vacuum cold pump device;
then, an air inlet at the lower end of the high-vacuum cold pump device is a vacuum pumping connection port and is used for being connected with a pumped product; after the vacuum pump unit is started to work and the outer shell assembly is pumped into a certain vacuum degree, liquid nitrogen is introduced through the liquid inlet pipe, the liquid nitrogen enters the liquid storage bag and the cold coil inside the shell, the space temperature in the cold pump shell is reduced, the pressure in the cold pump shell is reduced, residual gas in a pumped product rapidly enters the position of the cold pump shell through the gas inlet, and finally the residual gas is pumped by the vacuum pump unit.
Compared with the prior art, the invention has the advantages that:
when the outer shell component is pumped into a certain vacuum degree, the vacuum degree can be improved very slowly or the limit of the vacuum pump unit is reached, the vacuum degree of the pumped product is difficult to be further improved, liquid nitrogen is slowly introduced into the shell through the liquid inlet pipe at the moment, the temperature of the space in the shell is rapidly reduced, the pressure is reduced, residual gas in the pumped product rapidly enters the cold pump shell, and finally the residual gas is pumped by the vacuum pump unit, so that the vacuum degree of the pumped product is improved, and the vacuum pumping time is greatly shortened.
Drawings
Fig. 1 is a schematic structural view of a high vacuum air-cooling pump device according to the present invention, wherein:
1. an outer housing assembly; 2. a cold pump inner assembly; 3. a heat insulating sleeve assembly; 4. a liquid inlet pipe; 5. a liquid outlet pipe; 6. a fixed support; 7. a heat preservation layer; 11. a flange component I; 12. a flange component II; 13. a flange assembly III; 14. a flange component IV; 15. a cold pump housing; 21. a liquid storage bag; 22. a support tube; 23. a three-way joint; 24. a cold coil; A. a vacuum pump unit; B. a vacuum valve; C. a product to be pumped;
fig. 2 is a schematic view of the construction of the insulating sleeve assembly of the present invention, wherein:
31. a connecting ring I; 32. an inner tube; 33. a connecting ring II; 34. a middle tube; 35. an outer tube; 36. a connecting ring III;
fig. 3 is a schematic structural view of a liquid storage pack according to the present invention, wherein:
211. a left end socket; 212. a cylinder section; 213. and a right sealing head.
Fig. 4 is a schematic structural diagram of a connection between a liquid inlet pipe and a cold coil pipe in a high vacuum cold pump device according to the present invention.
Fig. 5 is a schematic diagram of a structure in which a liquid outlet pipe is connected with a cold coil pipe in a high vacuum air pump device according to the present invention.
Detailed description of the preferred embodiments
The invention is illustrated in the following description with reference to the figures and examples:
as shown in fig. 1-3, a high vacuum air pump device comprises an outer shell component 1, an inner cold pump component 2, a heat insulation sleeve component 3, a liquid inlet pipe 4, a liquid outlet pipe 5, a fixed support 6 and a heat insulation layer 7, wherein the inner cold pump component 2 and the fixed support 6 are arranged in the outer shell component 1;
the cold pump inner assembly 2 comprises a liquid storage bag 21, a support tube 22, three-way joints 23 and cold coils 24, the liquid storage bag 21 comprises a cylinder section 212, a left seal head 211 is fixed on the left side of the cylinder section 212, a right seal head 213 is fixed on the right side of the cylinder section 212, each part of the liquid storage bag 21 is connected through assembly welding, a plurality of liquid storage bags 21 are transversely arranged in the cold pump shell 15 side by side, the side wall of each liquid storage bag 21 is connected with the cold coils 24, the support tube 22 is arranged between each two liquid storage bags 21, the liquid storage bags 21 are not communicated with the inside of the support tube 22, the liquid storage bags 21 are transversely arranged, the liquid inlet pipe 4 is communicated with the cold coils 24 at the inlet end of the cold pump inner assembly 2 through the three-way joints, the liquid inlet pipe 4 is connected with the three-way joint and then is divided into two coils, the liquid outlet pipe 5 is communicated with the cold coil pipe 24 at the outlet end of the cold pump inner assembly 2 through the three-way joint, the liquid outlet pipe 5 is connected with the three-way joint and then is divided into two coils, the liquid outlet pipe 5 is arranged at the left end or the right end of the cold pump housing 15, in the embodiment, the liquid outlet pipe 5 is arranged at the left end of the housing, the cooling effect is improved, the liquid nitrogen loss is reduced, meanwhile, the plurality of groups of cold coils 24 and the liquid storage bags 21 are arranged to ensure higher efficiency in the cold pump housing 15 during cooling, the temperature is suddenly reduced, the left end and the right end of the outer housing assembly 1 are respectively provided with a fixed support 6, and one end of the fixed support 6 is connected to the liquid storage bag 21 at the outermost side;
the outer shell assembly 1 comprises a cold pump shell 15, one end of the cold pump shell 15 is provided with a flange assembly I11, the other end of the cold pump shell 15 is provided with a flange assembly III 13, one end of the side wall of the cold pump shell 15 is provided with a flange assembly II 12, the upper end of the flange assembly II 12 is connected with a gas outlet c, the other end of the side wall of the cold pump shell 15 is provided with a flange assembly IV 14, the lower end of the flange assembly IV 14 is connected with one or more air inlets d, and a multi-flange assembly is arranged to enable the high-vacuum air pump device to be in detachable flange connection;
the outer peripheries of the liquid inlet pipe 4 and the liquid outlet pipe 5 on the outer side of the cold pump housing 15 are respectively sleeved with a heat insulation sleeve component 3, the heat insulation sleeve component 3 comprises a connecting ring I31, an inner pipe 32, a connecting ring II 33, a middle pipe 34, an outer pipe 35 and a connecting ring III 36, the inner pipe 32 is sleeved on the liquid inlet pipe 4 and the liquid outlet pipe 5 on the outer side of the cold pump housing 15, the inner pipe 32 is connected with the liquid inlet pipe 4 through the connecting ring I31, the inner pipe 32 is connected with the liquid outlet pipe 5 through the connecting ring I31, the middle pipe 34 is sleeved on the outer periphery of the inner pipe 32, the inner pipe 32 is connected with the middle pipe 34 through the connecting ring II 33, the outer pipe 35 is sleeved on the outer periphery of the middle pipe 34, the outer pipe 35 is connected with the middle pipe 34 through the connecting ring III, and all parts of the heat insulation sleeve component 3 are connected through assembly welding; the inner tube 14, the outer tube 15 and the middle tube 17 in the heat insulation sleeve assembly 3 greatly increase the heat conduction path, reduce the evaporation of liquid nitrogen, and further reduce the loss of the liquid nitrogen;
the outer wall of shell body subassembly 1 still is provided with one deck heat preservation 7, and heat preservation 7 keeps warm the casing, has significantly reduced liquid nitrogen evaporation, reduces the loss.
The using method of the device is as follows:
firstly, connecting an exhaust port c of a high-vacuum cold pump device with a vacuum pump unit;
then, one or more air inlets d are arranged at the lower end of the high-vacuum air pump device, and a vacuumizing connection port is arranged below each air inlet d and is used for being connected with a pumped product C;
then, the vacuum pump unit A of the vacuumizing system is started to work, when the outer shell assembly 1 is vacuumized to a certain degree, the degree of vacuum in the device is slowly improved even reaches the limit of the vacuum pump unit A, so that the degree of vacuum of the vacuumized product C is difficult to be improved;
at this time, liquid nitrogen is slowly introduced through the liquid inlet pipe 4, and enters the liquid storage bag 21 and the cold coil pipe 24 inside the shell, so that the space temperature in the cold pump shell 15 is rapidly reduced, the pressure in the cold pump shell 15 is reduced, and residual gas in the pumped product C rapidly enters the position of the cold pump shell 15 through the gas inlet d and is finally pumped by the vacuum pump unit A.
Therefore, the device greatly improves the vacuum degree of the pumped product, shortens the vacuumizing time greatly and improves the working efficiency.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions that are formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.
Claims (5)
1. A high vacuum cold pump device, characterized in that: the device comprises an outer shell component (1), a cold pump inner component (2), a liquid inlet pipe (4) and a liquid outlet pipe (5);
the outer housing assembly (1) comprises a chilled pump housing (15);
the cold pump inner assembly (2) is arranged in the cold pump housing (15), and the cold pump inner assembly (2) is communicated with the liquid inlet pipe (4) and the liquid outlet pipe (5);
the cold pump inner assembly (2) comprises a plurality of liquid storage bags (21) and a plurality of sections of cold coils (24), the liquid storage bags (21) and the cold coils (24) are connected in a staggered mode, and support pipes (22) are arranged between two adjacent liquid storage bags (21);
an air inlet (d) and an air outlet are formed in the cold pump shell (15); the air outlet is used for connecting a vacuum pump unit, and the air inlet (d) is used for connecting a pumped product;
after the outer shell component (1) is pumped into a certain vacuum degree, liquid nitrogen is introduced through the liquid inlet pipe (4), and enters the liquid storage bag and the cold coil pipe in the shell, so that the space temperature in the cold pump shell is reduced, the pressure in the cold pump shell is reduced, residual gas in the pumped product (C) rapidly enters the position of the cold pump shell through the gas inlet (d), and is finally pumped by the vacuum pump set;
the liquid inlet pipe (4) is communicated with a cold coil pipe (24) at the inlet end of the cold pump inner assembly (2) through a three-way joint, and the liquid inlet pipe (4) is divided into two coils after being connected with the three-way joint;
the liquid outlet pipe (5) is communicated with a cold coil pipe (24) at the outlet end of the cold pump inner assembly (2) through a three-way joint, and the liquid outlet pipe (5) is divided into two coils after being connected with the three-way joint;
the liquid storage bag (21) comprises a cylinder section (212), and sealing heads are arranged on the left side and the right side of the cylinder section (212); the liquid storage bag (21) is transversely arranged in the cold pump housing (15);
an insulation layer (7) is arranged on the outer wall of the outer shell assembly (1); the periphery of the liquid inlet pipe (4) and the liquid outlet pipe (5) at the outer side of the cold pump shell (15) are sleeved with heat insulation sleeve assemblies (3).
2. A high vacuum cold pump apparatus according to claim 1, wherein: the number of the air inlets (d) is one or more.
3. A high vacuum cold pump apparatus according to claim 1, wherein: the two sides of the cold pump inner assembly (2) are fixed through fixing supports (6).
4. A high vacuum cold pump apparatus according to claim 1, wherein: the liquid outlet pipe (5) and the liquid inlet pipe (4) are arranged on the same side of the cold pump housing (15).
5. A high vacuum cold pump apparatus according to claim 1, wherein: the heat insulation sleeve assembly (3) comprises an inner pipe (32), a middle pipe (34) and an outer pipe (35) which are sequentially arranged from inside to outside, wherein the inner pipe (32) is sleeved on a liquid inlet pipe (4) or a liquid outlet pipe (5), the outer side end face of the inner pipe is sealed through a connecting ring I (31), the inner side end faces of the inner pipe (32) and the middle pipe (34) are sealed through a connecting ring II (33), and the outer side end faces of the outer pipe (35) and the middle pipe (34) are sealed through a connecting ring III (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811566285.XA CN109488563B (en) | 2018-12-21 | 2018-12-21 | High-vacuum air-cooling pump device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811566285.XA CN109488563B (en) | 2018-12-21 | 2018-12-21 | High-vacuum air-cooling pump device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109488563A CN109488563A (en) | 2019-03-19 |
| CN109488563B true CN109488563B (en) | 2024-04-02 |
Family
ID=65711099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811566285.XA Active CN109488563B (en) | 2018-12-21 | 2018-12-21 | High-vacuum air-cooling pump device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109488563B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006080416A1 (en) * | 2005-01-28 | 2006-08-03 | Matsushita Electric Industrial Co., Ltd. | Thermal insulator |
| CN202707433U (en) * | 2012-08-07 | 2013-01-30 | 北京和华腾真空泵压缩机有限公司 | Vacuum air removing system |
| CN103017561A (en) * | 2012-12-13 | 2013-04-03 | 常州博朗低温设备有限公司 | Vacuumizing condenser |
| CN203047815U (en) * | 2012-12-13 | 2013-07-10 | 常州博朗低温设备有限公司 | Vacuumizing device of vacuum insulation container |
| CN203710732U (en) * | 2014-02-20 | 2014-07-16 | 武汉大学 | Cold trap capable of externally connecting coolant |
| CN205297861U (en) * | 2015-12-30 | 2016-06-08 | 深圳市富达冷冻设备有限公司 | High -efficient vacuum pumping system of low temperature entrapment pump has been used |
| CN206874452U (en) * | 2017-06-06 | 2018-01-12 | 苏州罗旭真空科技有限公司 | A kind of low-temperature coil trap |
| CN209261756U (en) * | 2018-12-21 | 2019-08-16 | 江苏深绿新能源科技有限公司 | A kind of cold pump installation of high vacuum |
-
2018
- 2018-12-21 CN CN201811566285.XA patent/CN109488563B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006080416A1 (en) * | 2005-01-28 | 2006-08-03 | Matsushita Electric Industrial Co., Ltd. | Thermal insulator |
| CN202707433U (en) * | 2012-08-07 | 2013-01-30 | 北京和华腾真空泵压缩机有限公司 | Vacuum air removing system |
| CN103017561A (en) * | 2012-12-13 | 2013-04-03 | 常州博朗低温设备有限公司 | Vacuumizing condenser |
| CN203047815U (en) * | 2012-12-13 | 2013-07-10 | 常州博朗低温设备有限公司 | Vacuumizing device of vacuum insulation container |
| CN203710732U (en) * | 2014-02-20 | 2014-07-16 | 武汉大学 | Cold trap capable of externally connecting coolant |
| CN205297861U (en) * | 2015-12-30 | 2016-06-08 | 深圳市富达冷冻设备有限公司 | High -efficient vacuum pumping system of low temperature entrapment pump has been used |
| CN206874452U (en) * | 2017-06-06 | 2018-01-12 | 苏州罗旭真空科技有限公司 | A kind of low-temperature coil trap |
| CN209261756U (en) * | 2018-12-21 | 2019-08-16 | 江苏深绿新能源科技有限公司 | A kind of cold pump installation of high vacuum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109488563A (en) | 2019-03-19 |
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