CN110701025A - Novel air compressor joint corrugated pipe and production method and installation method thereof - Google Patents
Novel air compressor joint corrugated pipe and production method and installation method thereof Download PDFInfo
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- CN110701025A CN110701025A CN201910941886.2A CN201910941886A CN110701025A CN 110701025 A CN110701025 A CN 110701025A CN 201910941886 A CN201910941886 A CN 201910941886A CN 110701025 A CN110701025 A CN 110701025A
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- air compressor
- flange
- connecting pipe
- novel air
- joint bellows
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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
- 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
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- F04B39/14—Provisions for readily assembling or disassembling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention provides a novel air compressor joint corrugated pipe and a production method and an installation method thereof, wherein the novel air compressor joint corrugated pipe comprises a connecting pipe; the connecting pipe comprises a plurality of switching parts which are arranged in sequence; a plurality of corrugations are arranged at the joint of each switching part or each two switching parts; the end part of the connecting pipe is connected with a flange; the flange is connected with an air compressor; a sealing gasket is arranged between the flange and the connecting end of the air compressor; according to the invention, through a sectional type forming process of the stainless steel corrugated pipe, the pipeline of the air compressor is processed with a plurality of corrugations and straight pipes are reserved at other positions according to the position requirement of the bent pipe of the pipeline, and then the formed pipeline is bent according to the requirement, so that the cost is effectively reduced, and meanwhile, a low-temperature cooling device is used for controlling the temperature below the lowest working temperature of the air compressor system to install the sealing gasket, the flange and the like, so that the sealing property is effectively improved, and the sealing performance and the NVH performance are greatly improved.
Description
Technical Field
The invention relates to the field of automobile part production, in particular to a novel air compressor joint corrugated pipe and a production method and an installation method thereof.
Background
The air compressor is used as a power input source of pneumatic brakes of automobiles, rail transit and the like, has the performance requirements of vibration resistance, noise reduction, high and low temperature resistance (-50-200 ℃), 1MPa working pressure and the like, and has the realization modes of pure metal hard pipe connection, rubber pipe outer steel wire weaving, nylon pipe outer steel wire weaving, continuous corrugated pipes and the like in the prior industry;
wherein, the connection of the pure metal hard pipe has the defects of difficult pipe bending, no shock resistance, air leakage and the like;
the steel wire weaving outside the rubber tube has the defects of difficult tube bending, high cost, air leakage and the like;
the outer steel wire weaving of the nylon pipe has the defects of difficult pipe bending, high cost, easy electric breakdown of the pipe body, air leakage caused by buckling and the like;
the continuous corrugated pipe connection has the defects of large noise, large resistance, air leakage and the like;
therefore, it is desirable to design a low cost, high sealing performance, high NVH performance pipeline.
Disclosure of Invention
The invention provides a novel air compressor joint corrugated pipe and a production method and an installation method thereof.A sectional type forming process of a stainless steel corrugated pipe is used, a plurality of corrugations are processed at the bent pipe of the air compressor pipeline according to the position requirement of the bent pipe of the pipeline, straight pipes are reserved at the other positions, then the formed pipeline is bent according to the requirement, a sealing groove is arranged on a flange, and the flange is connected by brazing, so that the problems in the prior art are effectively solved, the cost is effectively reduced, and the sealing performance and the NVH performance are greatly improved.
The technical scheme of the invention is realized as follows:
a novel air compressor joint bellows includes: a connecting pipe;
the connecting pipe comprises a plurality of switching parts which are arranged in sequence;
a plurality of corrugations are arranged at intervals at the joint of each switching part or each two switching parts;
the end part of the connecting pipe is connected with a flange;
the flange is connected with an air compressor;
and a sealing gasket is arranged between the flange and the connecting end of the air compressor.
Further, the flange, the sealing gasket and the air compressor are assembled through a low-temperature cooling device.
Further, the flange is connected with the connecting pipe through brazing.
Furthermore, a welding liquid filling area is arranged at the joint of the connecting hole of the flange and the connecting pipe.
Furthermore, one or more first sealing lines are arranged in one end, connected with the air compressor, of the connecting hole of the flange.
Further, the flange is rotatably connected with the connecting pipe.
Further, an upset head is arranged at the end part of the connecting pipe.
Furthermore, one or more second sealing lines are arranged on the inner side of the upset head of the connecting pipe.
Further, the sealing gasket is a red copper gasket.
Furthermore, the included angle between the welding liquid filling area and the connecting pipe is 0-40 degrees.
Further, the outer periphery of the welding liquid filling area is in a thread shape or a corrugated shape.
Further, the radial depth of the thread or the corrugation on the outer periphery side of the welding liquid filling area is 0.5-2.5 mm.
Further, the axial length of the welding liquid filling area is larger than 4 mm.
Further, the connecting pipe is a stainless steel connecting pipe.
Further, the connecting pipe is formed in an integrated mode through hydraulic segmented mode in the die.
Further, the wall thickness of the connecting pipe is 0.2-1 mm.
Further, the production method of the connecting pipe of the novel air compressor joint corrugated pipe is characterized by comprising the following steps of:
using a sectional type forming die and assembling the die;
replacing a ripple mould at the position where the ripple needs to be processed;
and bending the formed corrugated connecting pipe according to the bending requirement.
Further, the installation method of the novel air compressor joint corrugated pipe is characterized by comprising the following steps:
(1) controlling the sealing gasket to be lower than the lowest working temperature of the air compressor system by using a cooling device or controlling the sealing gasket, the flange and the flange on the air compressor to be lower than the lowest working temperature of the air compressor system by using the cooling device;
(2) assembling the sealing gasket, the flange and a flange on an air compressor;
(3) and restoring the assembled sealing gasket, the flange and the flange on the air compressor to normal temperature.
Furthermore, the installation method of the novel air compressor joint corrugated pipe is characterized in that: the cooling device is a liquid nitrogen box.
According to the sectional type forming process of the stainless steel corrugated pipe, the pipeline of the air compressor is processed with a plurality of corrugations and straight pipes are reserved at other positions according to the position requirement of the pipeline bent pipe, then the formed pipeline is bent according to the requirement, meanwhile, the flange is provided with the sealing groove and connected with the flange through brazing, so that the problems in the prior art are effectively solved, the cost is effectively reduced, and the sealing performance and the NVH performance are greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for a customer of ordinary skill in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an adapter portion of a novel air compressor joint bellows in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a flange and a connecting pipe of the novel air compressor joint bellows in the embodiment of the invention, wherein the flange and the connecting pipe are connected in a welding connection manner, and the connecting pipe is free of an upset head;
fig. 3 is a schematic structural diagram of a connection pipe without an upset head of the novel air compressor joint bellows shown in fig. 2;
fig. 4 is a structural left side view of a flange with a sealing line of the novel air compressor joint corrugated pipe shown in fig. 2;
fig. 5 is a front structural view of a flange with a sealing line of the joint bellows of the novel air compressor shown in fig. 2 and 4;
fig. 6 is an enlarged view of a structure at a position a of the novel air compressor joint bellows shown in fig. 3;
fig. 7 is a schematic structural diagram of a flange and a connecting pipe of the novel air compressor joint bellows in the embodiment of the present invention, which are connected by welding, and the connecting pipe has an upset head;
fig. 8 is a schematic structural diagram of a connecting pipe with an upset head of the novel air compressor joint bellows shown in fig. 7;
FIG. 9 is an enlarged view of the upset at B of the upset connecting tube shown in FIG. 8 with the upset being a large upset;
fig. 10 is a structural left side view of a sealing line-free flange of the joint bellows of the novel air compressor shown in fig. 7;
fig. 11 is a schematic structural diagram of a flange of the novel air compressor joint bellows in the embodiment of the present invention, which is rotationally connected to a connecting pipe, where the connecting pipe has no upset head;
fig. 12 is a schematic structural diagram of a flange of the novel air compressor joint bellows in the embodiment of the present invention, which is rotatably connected to a connecting pipe, the connecting pipe has an upset, and the upset is a large upset;
figure 13 is a schematic view of a small upset alternative to the large upset of figures 7-10 and 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In an embodiment of the present invention, as shown in fig. 1 to 13, a novel air compressor joint bellows comprises: the connecting pipe 2 in the embodiment of the present application, the connecting pipe 2 is integrally formed by utilizing hydraulic pressure in a mold, and certainly, the connecting pipe 2 with the same function and effect can be produced by utilizing other production modes, and all the connecting pipes belong to the protection scope of the present invention;
the connecting pipe 2 comprises a plurality of switching parts 21 which are arranged in sequence;
a plurality of corrugations 211 are arranged at intervals at the joint of each adapter part 21 or each two adapter parts 21, and the corrugations 211 are used for improving the vibration resistance of the connecting pipe 2 in the use process;
the end part of the connecting pipe 2 is connected with a flange 1;
the flange 1 is connected with an air compressor;
and a sealing gasket is arranged between the flange 1 and the connecting end of the air compressor.
In the embodiment of the invention, as shown in fig. 2-3, the flange 1 is connected with the sealing gasket and the air compressor through a low-temperature cooling device;
the air compressor works in a high-temperature environment, the sealing gasket or the flange 1 used when the connecting pipe 2 is connected with the air compressor is formed by controlling the sealing gasket or the flange 1 to be lower than the lowest working temperature of the air compressor by using a liquid nitrogen box or other cooling devices, and gradually recovering to normal temperature after the connecting pieces at two ends and the gaskets are assembled, so that the flange 1, the sealing gasket and other parts of the connecting end cannot expand, the gas leakage phenomenon caused by thermal expansion and cold contraction in the prior art is overcome, the flange 1, the sealing gasket and other parts of the connecting end work in an expanded state no matter in which working environment, and the gas leakage at the connecting part is avoided;
the above-described effect can of course also be achieved in any other possible way at normal temperature.
In the embodiment of the present invention, as shown in fig. 1-13, the flange 1 and the connecting pipe 2 may be connected in a rotatable manner or in a brazing manner, wherein the brazing connection can effectively improve the vibration resistance of the connecting portion, the welding manner with higher vibration resistance is the brazing connection at present, and the better welding manner may be adopted to further improve the vibration resistance later.
In the embodiment of the present invention, as shown in fig. 6, when the flange 1 and the connecting pipe 2 are connected by brazing, in order to further improve the overall vibration resistance, a solder liquid filling area 12 is provided at the connection point between the connecting hole of the flange 1 and the connecting pipe 2, so that the solder liquid filling area 12, i.e., the solder liquid filling area and the buffer area, are increased, and the vibration resistance is effectively improved.
In the specific embodiment of the present invention, as shown in fig. 2-4, when the flange 1 and the connecting pipe 2 use a rotating connection mode, the connecting pipe 2 may be provided with an upset 22 or not provided with an upset 22, the upset 22 may be a long upset (refer to fig. 7-9), or a short upset (refer to fig. 13) or other upsets or other structures having the same function, and the flange 1 is limited at the inner end of the connecting pipe 2 when the upset 22 is provided;
in order to improve the sealing performance when the upset head 22 is arranged, a plurality of second sealing lines 221 can be arranged on the inner side of the upset head 22, the plurality of sealing lines 221 can simultaneously play a sealing role, the sealing function is obviously enhanced, and the sealing lines are not required to be arranged or other components with the sealing function are used for sealing;
in order to enhance the sealing performance when the upset head 22 is not provided, the first sealing line 11 may be provided in the end of the connecting hole of the flange 1 connected to the air compressor, or the first sealing line may not be provided, or other members having a sealing function may be used for sealing.
In the embodiment of the invention, as shown in fig. 2-4, when the flange 1 and the connecting pipe 2 are connected by brazing, the connecting pipe 2 may be provided with the upset 22 or not provided with the upset 22, and the upset 22 may be a long upset (see fig. 7-9), a short upset (see fig. 13) or other upsets or other structures with the same function;
when the upset head 22 is arranged, the flange 1 is limited at the inner end of the connecting pipe 2, and a plurality of second sealing lines 221 can be arranged in the upset head 22 for enhancing the sealing performance when the upset head is connected with an air compressor, or the sealing lines are not arranged, or other parts with sealing functions are used for sealing;
when the upset head 22 is not arranged, the first sealing line 11 can be arranged on the flange 1 in order to enhance the sealing performance when the upset head is connected with an air compressor, or the sealing line is not arranged, or other components with sealing functions are used for sealing;
the multiple sealing lines can simultaneously play a role in sealing, and the sealing effect is obviously enhanced.
In the specific embodiment of the invention, as shown in fig. 2-4, the sealing gasket is a red copper gasket, the red copper gasket can adapt to ultralow temperature, and the sealing gasket can also be other air compressor gaskets which can be used as the sealing gasket.
In the embodiment of the invention, as shown in fig. 2-4, the included angle 2 between the soldering liquid filling area 12 and the connecting pipe is 0-40 °, specifically, referring to the mark 12 in fig. 5, the included angle is generally set to 15-20 °, so that the buffer effect is small and the waste of solder is large.
In the embodiment of the present invention, referring to fig. 2-4, the outer periphery of the welding liquid filling area 12 is threaded or corrugated, and referring to fig. 2, fig. 6, and fig. 7, the outer periphery is threaded or corrugated, which effectively increases the buffer area of the welding liquid filling area.
In the embodiment of the invention, as shown in fig. 2-4, the radial depth of the thread or corrugation on the outer periphery of the welding liquid filling area 12 is 0.5-2.5 mm, preferably 2mm, and the radial depth of the thread or corrugation is set to be about 2mm according to the buffer area of the welding liquid filling area, namely the buffer area is increased, and the buffer efficiency is improved.
In the embodiment of the invention, as shown in fig. 2-4, the axial length of the welding liquid filling area 12 is greater than 4mm, and the axial length is set to be about 4mm according to the buffering area of the sweat buffering area, so that the buffering area is effectively increased, and the buffering efficiency is improved.
In the embodiment of the invention, as shown in fig. 1-3, the connecting pipe 2 is a stainless steel connecting pipe, or a connecting pipe made of other materials and having the same performance, and the stainless steel material has the advantages of vibration resistance, easiness in bending, air leakage prevention, electrostatic breakdown prevention, low cost, short process chain, stable connection and the like;
through the straight tube of chooseing for use stainless steel material in this application to the interval sets up the ripple in the middle of the straight tube, has overcome various defects and problems that exist among the prior art.
The connection with the pure metal hard pipe has the defects of difficult pipe bending, no shock resistance, air leakage and the like;
the steel wire weaving outside the rubber tube has the defects of difficult tube bending, high cost, air leakage and the like;
the outer steel wire weaving of the nylon pipe has the defects of difficult pipe bending, high cost, easy electric breakdown of the pipe body, air leakage caused by buckling and the like;
the continuous corrugated pipe connection has the defects of large noise, large resistance, air leakage and the like;
the cost is saved by more than 70%.
In the specific embodiment of the invention, as shown in fig. 1-3, the wall thickness of the connecting pipe 2 is 0.2-1 mm, when the wall thickness is within this range, the wall thickness can bear the vibration best, and the stress, shearing force and the like of the connecting pipe can achieve the best effect, and in practical application, the connecting pipe 2 with different wall thicknesses can be produced according to different diameters and different application occasions.
Now, assuming that a seal line is additionally arranged and a large heading is selected, the following four embodiments are provided:
the first embodiment is as follows:
as can be seen in the figures 2-6,
the flange 1 and the connecting pipe 2 are connected by brazing.
A plurality of first sealing lines 11 are arranged in one end of the connecting hole of the flange 1, which is connected with the air compressor;
when the air compressor is assembled, the air compressor can be assembled at normal temperature and can also be assembled by using a low-temperature cooling device.
The second embodiment is as follows:
as can be seen in the figures 7-10,
the flange 1 is connected with the connecting pipe 2 through brazing;
the end part of the connecting pipe 2 is provided with an upset head 22, and the upset head 22 limits the flange 1 at the inner end of the connecting end;
a second seal line 221 is arranged in the upset head 22;
when the air compressor is assembled, the air compressor can be assembled at normal temperature and can also be assembled by using a low-temperature cooling device.
The third concrete embodiment:
as can be seen in figure 10 of the drawings,
the flange 1 is rotatably connected with the connecting pipe 2;
a plurality of first sealing lines 11 are arranged in one end of the connecting hole of the flange 1, which is connected with the air compressor;
when the air compressor is assembled, the air compressor can be assembled at normal temperature and can also be assembled by using a low-temperature cooling device.
The fourth concrete embodiment:
as can be seen in figure 11 of the drawings,
the flange 1 is rotatably connected with the connecting pipe 2;
the end of the connecting pipe 2 is provided with an upset head 22;
a second seal line 221 is arranged in the upset head 22;
when the air compressor is assembled, the air compressor can be assembled at normal temperature and can also be assembled by using a low-temperature cooling device.
In the embodiment of the invention, as shown in fig. 1-13, the method for producing the connecting pipe of the novel air compressor joint corrugated pipe is characterized by comprising the following steps:
using a sectional type forming die and assembling the die;
replacing a ripple mould at the position where the ripple needs to be processed;
and bending the formed corrugated connecting pipe according to the bending requirement.
In the specific embodiment of the present invention, as shown in fig. 1 to 13, the method for installing the novel air compressor joint bellows is characterized by comprising the following steps:
(1) controlling the sealing gasket to be lower than the lowest working temperature of the air compressor system by using a cooling device or controlling the sealing gasket, the flange 1 and the flange on the air compressor to be lower than the lowest working temperature of the air compressor system by using the cooling device;
(2) assembling a sealing gasket, a flange 1 and a flange on an air compressor;
(3) restoring the assembled sealing gasket, the flange 1 and the flange on the air compressor to normal temperature;
be less than the assembly methods of air compressor machine system temperature, greatly improved the leakproofness of connecting pipe, can effectively prevent to reveal.
In the embodiment of the invention, as shown in fig. 1-13, the installation method of the novel air compressor joint corrugated pipe, wherein the cooling device is a liquid nitrogen tank, and can also be any cooling device or other equipment with the same function.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (19)
1. The utility model provides a novel air compressor machine joint bellows which characterized in that: comprises a connecting pipe;
the connecting pipe comprises a plurality of switching parts which are arranged in sequence;
a plurality of corrugations are arranged at intervals at the joint of each switching part or each two switching parts;
the end part of the connecting pipe is connected with a flange;
the flange is connected with an air compressor;
and a sealing gasket is arranged between the flange and the connecting end of the air compressor.
2. The novel air compressor joint bellows of claim 1, wherein: the flange, the sealing gasket and the air compressor are assembled through a low-temperature cooling device.
3. The novel air compressor joint bellows of claim 1, wherein: the flange is connected with the connecting pipe through brazing.
4. The novel air compressor joint bellows of claim 3, wherein: and a welding liquid filling area is arranged at the joint of the connecting hole of the flange and the connecting pipe.
5. The novel air compressor joint bellows of claim 3, wherein: one or more first sealing lines are arranged in one end, connected with the air compressor, of the connecting hole of the flange.
And welding the flange drilled with the first sealing line to the connecting pipe through brazing.
6. The novel air compressor joint bellows of claim 1, wherein: the flange is rotatably connected with the connecting pipe.
7. The novel air compressor joint bellows of any one of claims 3 or 6, wherein: and an upset head is arranged at the end part of the connecting pipe extending out of the flange.
8. The novel air compressor joint bellows of claim 7, wherein: one or more second sealing lines are arranged on the inner wall of the upset head of the connecting pipe.
9. The novel air compressor joint bellows of claim 1, wherein: the sealing gasket is a red copper gasket.
10. The novel air compressor joint bellows of claim 4, wherein: the included angle between the welding liquid filling area and the connecting pipe is 0-40 degrees.
11. The novel air compressor joint bellows of claim 4, wherein: the outer periphery of the welding liquid filling area is in a thread shape or a corrugated shape.
12. The novel air compressor joint bellows of claim 11, wherein: the radial depth of the thread or the corrugation on the outer periphery side of the welding liquid filling area is 0.5-2.5 mm.
13. The novel air compressor joint bellows of claim 4, wherein: the axial length of the welding liquid filling area is more than 4 mm.
14. The novel air compressor joint bellows of claim 1, wherein: the connecting pipe is a stainless steel connecting pipe.
15. The novel air compressor joint bellows of claim 1, wherein: the connecting pipe is formed by utilizing hydraulic pressure in the die in an integrated manner.
16. The novel air compressor joint bellows of claim 1, wherein: the wall thickness of the connecting pipe is 0.2-1 mm.
17. The production method of the connecting pipe of the novel air compressor joint bellows as claimed in claims 1 to 16, characterized by comprising the following steps:
using a sectional type forming die and assembling the die;
replacing a ripple mould at the position where the ripple needs to be processed;
and bending the formed corrugated connecting pipe according to the bending requirement.
18. The mounting method of the novel air compressor joint corrugated pipe as claimed in any one of claims 1 to 16, characterized by comprising the following steps:
(1) controlling the sealing gasket to be lower than the lowest working temperature of the air compressor system by using a cooling device or controlling the sealing gasket, the flange and the flange on the air compressor to be lower than the lowest working temperature of the air compressor system by using the cooling device;
(2) assembling the sealing gasket, the flange and a flange on an air compressor;
(3) and restoring the assembled sealing gasket, the flange and the flange on the air compressor to normal temperature.
19. The method for installing the novel air compressor joint bellows as claimed in claim 18, wherein: the cooling device is a liquid nitrogen box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910941886.2A CN110701025A (en) | 2019-09-30 | 2019-09-30 | Novel air compressor joint corrugated pipe and production method and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910941886.2A CN110701025A (en) | 2019-09-30 | 2019-09-30 | Novel air compressor joint corrugated pipe and production method and installation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110701025A true CN110701025A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910941886.2A Pending CN110701025A (en) | 2019-09-30 | 2019-09-30 | Novel air compressor joint corrugated pipe and production method and installation method thereof |
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| Country | Link |
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| CN (1) | CN110701025A (en) |
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2019
- 2019-09-30 CN CN201910941886.2A patent/CN110701025A/en active Pending
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