CN115037367B - Stress compensation device of vacuum channel, laser vacuum transmission channel and compensation method - Google Patents
Stress compensation device of vacuum channel, laser vacuum transmission channel and compensation method Download PDFInfo
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- CN115037367B CN115037367B CN202210922044.4A CN202210922044A CN115037367B CN 115037367 B CN115037367 B CN 115037367B CN 202210922044 A CN202210922044 A CN 202210922044A CN 115037367 B CN115037367 B CN 115037367B
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
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Abstract
The invention discloses a stress compensation device of a vacuum channel, a laser vacuum transmission channel and a compensation method, and relates to the field of laser transmission channels, wherein the stress compensation device comprises a double-layer corrugated pipe coaxially connected with the vacuum channel, the double-layer corrugated pipe is provided with an inner cavity, and the inner cavity is communicated with the vacuum channel; two ends of the inner cavity are respectively sealed through a large sealing flange and a sealing flange, and negative pressure stress borne by the large sealing flange offsets negative pressure stress borne by the vacuum channel; the sealing flange is fixed with the ground through the supporting upright column, so that the supporting upright column offsets the negative pressure stress applied to the sealing flange; the laser vacuum transmission channel is applied to a channel body by a stress compensation device. The invention can ensure the self-balancing negative pressure stress on the vacuum channel and realize the free release of the stress of expansion with heat and contraction with cold, thereby ensuring the long-time stable effect of the vacuum channel, ensuring the long-time stability of the laser vacuum transmission channel and further ensuring the quality of light beam transmission.
Description
Technical Field
The invention relates to the field of laser transmission channels, in particular to a stress compensation device of a vacuum channel, a laser vacuum transmission channel and a compensation method.
Background
The transmission channel of laser can produce stress because of the expend with heat and contract with cold in the environment, and the mode of solving this stress is to increase a section bellows in the pipeline, and the bellows can produce axial or radial clearance compensation to realize compensating the deformation that stress leads to the bellows to produce.
For the laser vacuum transmission channel, the laser vacuum transmission channel can be subjected to negative pressure stress (namely stress generated by pressure difference between the inside and the outside of the vacuum transmission channel), especially for the laser vacuum transmission channel which is long in length and is in a large temperature difference environment, the laser vacuum transmission channel can lead to the stability of laser transmission under the action of the pressure difference stress, the pipeline can be extended or shortened under the action of expansion and contraction stress, the laser vacuum transmission channel and the optical cabins connected to the two ends of the transmission channel can be structurally deformed due to the pressure difference stress and the expansion and contraction stress, and therefore light beam transmission is caused to drift.
Disclosure of Invention
The first object of the present invention is: aiming at the existing problems, the stress compensation device of the vacuum channel is provided, and the device can compensate and restrain the cabin body connected with the vacuum channel from structural deformation in a self-adaptive manner, ensure that the vacuum channel can realize self-balancing negative pressure stress, and realize free release of expansion and contraction stress generated by the channel structure in a large temperature difference environment, thereby ensuring the long-time stable effect of the vacuum channel.
A second object of the present invention is to: aiming at the problems, the laser vacuum transmission channel is provided, the stress compensation device is applied to the laser vacuum transmission channel, the optical cabin is restrained from generating structural deformation, the stress of expansion with heat and contraction with cold on the vacuum channel is released, the long-time stability of the laser vacuum transmission channel is ensured, and the quality of light beam transmission is further ensured.
A third object of the present invention is to: aiming at the problems, the stress compensation method of the laser vacuum transmission channel is provided.
The technical scheme adopted by the invention is as follows: a stress compensation device of a vacuum channel comprises a double-layer corrugated pipe coaxially connected with the vacuum channel, wherein the double-layer corrugated pipe is provided with an outer layer and an inner layer, an inner cavity is formed between the outer layer and the inner layer, and an intercommunicating hose communicated with the vacuum channel is arranged on the inner cavity; the two ends of the inner cavity are respectively sealed through a large sealing flange and a sealing flange, the area of the end face of the large sealing flange is equal to that of the end face of the vacuum channel, and the external normal vector of the end face of the large sealing flange is opposite to that of the end face of the vacuum channel in direction, so that negative pressure stress borne by the large sealing flange offsets negative pressure stress borne by the vacuum channel; the sealing flange is fixed with the ground through the supporting upright column, so that the supporting upright column offsets the negative pressure stress applied to the sealing flange.
Further, both ends of the double-layer corrugated pipe are provided with connecting pipes for connecting with the vacuum channels, and after the double-layer corrugated pipe is installed, the axes of the connecting pipes are collinear with the axes of the vacuum channels.
Further, a small sealing flange is arranged on the end face of the connecting pipe, so that the connecting pipe is connected with the vacuum channel in a sealing mode.
Furthermore, two ends of the intercommunicating hose are respectively communicated with the inner cavity and the connecting pipe.
A laser vacuum transmission channel comprises a channel main body used for being communicated with an optical cabin, wherein the channel main body comprises a main section and transition sections positioned at two ends of the main section, and the transition sections are used for being connected with the optical cabin; the stress compensation device comprises the vacuum channel, one end of the stress compensation device is connected with the transition section, and the other end of the stress compensation device is connected with the main section.
Furthermore, the stress compensation device is provided with a connecting pipe used for being connected with the channel main body, a small sealing flange is arranged on the end face of the connecting pipe, and the connecting pipe and the channel main body are sealed through the small sealing flange.
Further, the main section has several sections of small sections, and the adjacent small sections are coaxially connected by the corrugated compensator.
A stress compensation method of a laser vacuum transmission channel is applied to the laser vacuum transmission channel, and two ends of the laser vacuum transmission channel are connected with optical cabins, and the stress compensation method comprises the following steps: the method for compensating the negative pressure stress comprises the following steps:
s1: the negative pressure stress on the large sealing flange is equal to and opposite to the difference between the negative pressure stress on the end face, far away from the laser vacuum transmission channel, on the optical cabin and the negative pressure stress on the end face, close to the laser vacuum transmission channel, on the optical cabin, so that the stress difference on the optical cabin is balanced;
s2: the negative pressure stress on the sealing flange is transmitted to the ground through the supporting upright post.
Further, the compensation of the stress caused by expansion with heat and contraction with cold comprises the following steps:
s3: when the laser vacuum transmission channel expands with heat and contracts with cold, the telescopic function of the double-layer corrugated pipe compensates the deformation of the laser vacuum transmission channel.
Further, in step S1, the intercommunication hose equalizes the pressure inside the inner cavity to the pressure inside the laser vacuum transmission channel, so that the negative pressure stress applied to the unit area on the large sealing flange is equal to the negative pressure stress applied to the unit area on the optical cabin, and the end surface area of the large sealing flange is controlled to be equal to the end surface area of the laser vacuum transmission channel, thereby implementing step S1.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the double-layer corrugated pipes are arranged, and the inner cavity between the double-layer corrugated pipes is communicated with the vacuum channel through the intercommunicating hose, so that the negative pressure stress on the unit area on the end surface of the large sealing flange is equal and opposite to the negative pressure stress on the unit area on the optical cabin, the deformation of the cabin body structure arranged on the vacuum channel can be compensated and restrained in a self-adaptive manner, and the self-balancing negative pressure stress of the vacuum channel is ensured;
2. according to the invention, the sealing flange is constrained by the ground through the supporting upright column, and the negative pressure stress borne by the sealing flange is transmitted to the ground to be released, so that the negative pressure stress borne by the sealing flange is offset, and the vacuum channel is prevented from being subjected to the negative pressure stress;
3. the double-layer corrugated pipe is used, has the capacity of deformation compensation, can freely release the stress of expansion with heat and contraction with cold, and realizes the effect of ensuring the long-time stability of the vacuum channel in a large temperature difference environment;
4. the stress compensation device is applied to the optical channel, and the negative pressure stress on the end face of the large sealing flange is equal in value and opposite in direction to the negative pressure stress difference on the optical cabin (namely the difference between the negative pressure stress on the end face, far away from the laser vacuum transmission channel, on the optical cabin and the negative pressure stress on the end face, close to the laser vacuum transmission channel, on the optical cabin), so that structural deformation of the optical cabin is inhibited, the stress on the vacuum channel caused by thermal expansion and cold contraction is released, the long-time stability of the laser vacuum transmission channel is ensured, and the quality of light beam transmission is further ensured.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram disclosed in embodiment 1 of the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is a schematic view of a part of the structure disclosed in embodiment 2 of the present invention;
FIG. 4 is a schematic view of the overall structure disclosed in embodiment 2 of the present invention;
FIG. 5 is an enlarged schematic view at A in FIG. 4;
the mark in the figure is: 1-a stress compensation device; 11-double-layer corrugated pipe; 111-an outer layer; 112-an inner layer; 113-an inner cavity; 12-sealing a large flange; 13-sealing the flange; 14-sealing a small flange; 15-connecting pipe; 16-a support column; 17-an intercommunicating hose; 2-a vacuum channel; 3-a channel body; 31-main section; 32-a transition section; 4-an optical compartment; 5-ripple compensator.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
As shown in fig. 1-2, a stress compensation device for a vacuum channel comprises a double-layer corrugated pipe 11 coaxially connected with a vacuum channel 2, wherein the double-layer corrugated pipe 11 has a certain deformation compensation capability, and for the deformation of the vacuum channel 2 caused by the stress of expansion with heat and contraction with cold, the double-layer corrugated pipe 11 can compensate the deformation thereof, so that the stress of expansion with heat and contraction with cold can be freely released, and the purpose of compensating the stress of expansion with heat and contraction with cold can be realized; the double-layer corrugated pipe 11 is provided with an outer layer 111 and an inner layer 112, an inner cavity 113 is formed between the outer layer 111 and the inner layer 112, and an intercommunicating hose 17 communicated with the vacuum channel 2 is arranged on the inner cavity 113, so that the vacuum channel 2 is communicated with the inner cavity 113, and the pressure in the inner cavity 113 is equal to the pressure in the vacuum cavity; furthermore, two ends of the inner cavity 113 are respectively sealed by a large sealing flange 12 and a large sealing flange 13, the inner cavity 113 is sealed, the large sealing flange 12 and the large sealing flange 13 block the communication between the inner cavity 113 and the outside atmosphere, the area of the end surface of the large sealing flange 12 is equal to the area of the end surface of the vacuum channel 2, and the external normal vector of the end surface of the large sealing flange 12 is opposite to the external normal vector of the end surface of the vacuum channel 2 in direction, so that the negative pressure stress applied to the large sealing flange 12 counteracts the negative pressure stress applied to the vacuum channel 2; the sealing flange 13 is fixed to the ground by means of a support column 16, so that the support column 16 counteracts the negative pressure stress to which the sealing flange 13 is subjected.
It should be noted that, in this specification, for the large sealing flange 12, the negative pressure stress refers to a stress generated by a pressure difference between the inner and outer end surfaces of the large sealing flange 12 due to different pressures; for the vacuum channel 2, the negative pressure stress refers to the stress caused by the pressure difference between the inner end surface and the outer end surface of one end of the vacuum channel 2.
It is further explained that, in the present specification, the explanation of the external normal vector is as follows: when one end surface is divided into an inner side and an outer side, the direction of the normal vector of the end surface is the direction from the inner side to the outer side and is an outer normal vector; in the present embodiment, the direction of the outer normal vector of the large sealing flange 12 is a normal vector of the direction from inside the inner cavity 113 to outside the inner cavity 113 along the axis of the vacuum passage 2; the outer normal vector of one end of the vacuum passage 2 is a normal vector of a direction from inside the vacuum passage 2 to outside the vacuum passage 2 along the axis of the vacuum passage 2; the reason for limiting the direction reversal of the external normal vector of the end face of the large sealing flange 12 and the external normal vector of the end face of the vacuum channel 2 is to ensure that the direction of the negative pressure stress applied to one end of the vacuum channel 2 is reversed to the direction of the negative pressure stress applied to the large sealing flange 12.
Specifically, in this embodiment, the pressure inside the inner cavity 113 is equal to the pressure inside the vacuum channel 2, and for the large sealing flange 12, the pressure difference between the inner end surface and the outer end surface of the large sealing flange 12 is equal to the pressure difference between the inner end surface and the outer end surface of one end of the vacuum channel 2, so that the negative pressure stress applied to the large sealing flange 12 per unit area is equal to the negative pressure stress applied to the vacuum channel 2 per unit area, and the directions are opposite, and the area of the end surface of the large sealing flange 12 is controlled to be equal to the area of the end surface of the vacuum channel 2, so that the negative pressure stress applied to the large sealing flange 12 as a whole is equal to the negative pressure stress applied to the end surface of the vacuum channel 2 as a whole, thereby achieving negative pressure stress balance, adaptively compensating and suppressing structural deformation of the cabin mounted on the vacuum channel 2, and ensuring that the vacuum channel 2 can self-balance the negative pressure stress.
In this embodiment, further, for the sealing flange 13, since the sealing flange 13 seals the inner cavity 113, the inner and outer end surfaces of the sealing flange 13 are also subjected to unequal pressure, so that the sealing flange 13 is also subjected to negative pressure stress, in order to solve the negative pressure stress, the sealing flange 13 is connected to the ground through the support column 16, the ground restrains the sealing flange 13, so that the negative pressure stress applied to the sealing flange 13 is transmitted to the ground through the support column 16 and dissipated, and further the negative pressure stress applied to the sealing flange 13 does not affect the vacuum channel 2.
In this embodiment, the two ends of the double-layer corrugated pipe 11 are provided with the connecting pipes 15 for connecting with the vacuum channel 2, after installation, the axis of the connecting pipe 15 is collinear with the axis of the vacuum channel 2, and the connecting pipe 15 realizes that the double-layer corrugated pipe 11 is coaxially connected with the vacuum channel 2, on one hand, when the vacuum channel 2 is subjected to thermal expansion and cold contraction stress, the double-layer corrugated pipe 11 can deform along the same axis as the vacuum channel 2, so as to achieve the purpose of releasing the thermal expansion and cold contraction stress; on the other hand, when the vacuum channel 2 is subjected to negative pressure stress, the negative pressure stress generated by the large sealing flange 12 can balance the negative pressure stress applied to the vacuum channel 2 along the axial direction of the vacuum channel 2.
In this embodiment, the terminal surface of connecting pipe 15 is provided with sealed small flange 14, so that connecting pipe 15 and vacuum channel 2 sealing connection, sealed small flange 14 guarantees the sealed of the hookup location between connecting pipe 15 and the vacuum channel 2, avoids producing and reveals, the vacuum state in the further assurance vacuum channel 2.
In this embodiment, two ends of the communicating hose 17 are respectively communicated with the inner cavity 113 and the connecting pipe 15, so that the communication between the vacuum channel 2 and the inner cavity 113 can be realized, the purpose of avoiding opening another connecting hole in the vacuum channel can be achieved, and the sealing performance of the vacuum channel 2 can be effectively ensured not to be damaged.
Example 2
As shown in fig. 1 to 5, a laser vacuum transmission channel comprises a channel body 3 for communicating with an optical chamber 4, wherein the channel body 3 is in a vacuum state, and in the embodiment 1, the channel body 3 is used as a vacuum channel 2 in the embodiment 1; the channel body 3 comprises a main section 31 and transition sections 32 positioned at two ends of the main section 31, wherein the transition sections 32 are used for being connected with the optical cabin 4; the laser vacuum transmission channel comprises a stress compensation device 1 of a vacuum channel 2 described in embodiment 1, wherein one end of the stress compensation device 1 is connected with a transition section 32, and the other end of the stress compensation device 1 is connected with a main section 31.
In the present embodiment, as shown in fig. 3, since the channel body 3 is connected to the optical chamber 4, the negative pressure stress applied to the channel body 3 mainly acts on the optical chamber 4, specifically, the channel body 3 is fixed and hermetically connected to a side surface b of the optical chamber 4 through a transition section 32 thereof, the optical chamber 4 is communicated with the channel body 3, and the optical chamber 4 is also in a vacuum state; the other side a (the side parallel to the side connected with the channel body 3) of the optical chamber 4 is subjected to negative pressure stress, because the area of the side a is larger than that of the side b, and the area of the side a minus the area of the side b is equal to the cross-sectional area of the channel body 3, in practice, the negative pressure stress applied to the channel body 3 is shown on the optical chamber 4, and the negative pressure stress applied to the side a on the optical chamber 4 is more than that applied to the side b and is balanced by the negative pressure stress applied to the large sealing flange 12 on the stress compensation device 1 in embodiment 1, and by matching with the deformation capability of the double-layer corrugated pipe 11, the structural deformation generated on the optical chamber 4 is inhibited, the thermal expansion and cold contraction stress applied to the vacuum channel 2 is released, the long-term stability of the laser vacuum transmission channel is ensured, and the quality of light beam transmission is further ensured.
In this embodiment, the stress compensation device 1 has connecting pipes 15 for connecting with the channel body 3, that is, as described in the connecting pipes 15 in embodiment 1, the connecting pipes 15 are located at two ends of the stress compensation device 1, one connecting pipe 15 is connected with the main section 31, the other connecting pipe 15 is connected with the transition section 32, the end face of the connecting pipe 15 is provided with a small sealing flange 14, the connecting pipe 15 is sealed with the channel body 3 through the small sealing flange 14, and the small sealing flange 14 ensures the sealing state of the channel body 3, and further ensures the air pressure state in the channel body 3.
In the present embodiment, as shown in fig. 5, for a long length of the channel body 3, the main section 31 has several segments, and the adjacent segments are coaxially connected by the corrugated compensator 5, the corrugated compensator 5 is a conventional corrugated compensator 5, the structure of which is known to those skilled in the art, and the structural bellows has thermal compensation capability and installation error compensation capability; therefore, the description is not repeated in the specification; it should be noted that, in the present embodiment, the main component of the stress compensation for the thermal expansion and contraction stress applied to the channel body 3 is the corrugated compensator 5.
In this embodiment, since the stress compensation device 1 disclosed in embodiment 1 has the expansion/contraction stress compensation function for the short-length passage body 3, the expansion/contraction stress can be used alone even in the case of the short-length passage body 3.
It is further noted that the long length of the channel body 3 is practically not a distinct boundary from the short length of the channel body 3, which is determined mainly by the operator's conditions of the channel body 3 in the actual working environment.
Example 3
As shown in fig. 1 to 5, a method for compensating stress of a laser vacuum transmission channel, which applies the laser vacuum transmission channel described in embodiment 2, wherein both ends of the laser vacuum transmission channel are connected with optical chambers 4, includes the following steps:
the method for compensating the negative pressure stress comprises the following steps:
s1: as shown in fig. 3 and 5, the negative pressure stress applied to the large sealing flange 12 is equal to and opposite to the difference between the negative pressure stress applied to the end surface of the optical chamber 4 far away from the laser vacuum transmission channel and the negative pressure stress applied to the end surface of the optical chamber 4 close to the laser vacuum transmission channel, so as to balance the stress difference applied to the optical chamber 4; specifically, with reference to embodiment 1 and embodiment 2, the negative pressure stress applied to the side surface a of the optical chamber 4 is greater than the negative pressure stress applied to the side surface b of the optical chamber 4, and the direction of the resultant stress f1 of the negative pressure stresses applied to the side surfaces a and b faces the inside of the laser vacuum transmission channel along the axis of the laser vacuum transmission channel, the direction of the negative pressure stress f2 applied to the large sealing flange 12 faces the inside of the inner cavity 113 along the axis of the laser vacuum transmission channel, and the resultant stress f1 and the negative pressure stress f2 are equal in value and opposite in direction, so as to balance the stress difference applied to the optical chamber 4;
s2: the negative pressure stress on the sealing flange 13 is transmitted to the ground through the supporting upright post 16, the ground restrains the sealing flange 13, the negative pressure stress on the sealing flange 13 is transmitted to the ground through the supporting upright post 16 and dissipated, and the negative pressure stress on the sealing flange 13 cannot influence the vacuum channel 2; it should be noted that, in this specification, the ground including the ground described in example 1, example 2 and example 3 is not limited to a single large ground, and may be a general fixed surface, such as a wall surface, that does not affect the stability of the optical chamber 4.
The method for compensating the stress caused by expansion caused by heat and contraction caused by cold comprises the following steps:
s3: when the laser vacuum transmission channel expands with heat and contracts with cold, the telescopic function of the double-layer corrugated pipe 11 compensates the deformation of the laser vacuum transmission channel.
In step S1, the intercommunication hose 17 equalizes the pressure inside the inner cavity 113 with the pressure inside the laser vacuum transmission channel, so that the negative pressure stress per unit area on the negative pressure stress optical chamber 4 per unit area on the large sealing flange 12 is equalized, and the end surface area of the large sealing flange 12 is controlled to be equal to the end surface area of the laser vacuum transmission channel, thereby implementing step S1.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of steps disclosed.
Claims (10)
1. A stress compensation device of a vacuum channel is characterized in that: the double-layer corrugated pipe comprises a double-layer corrugated pipe (11) coaxially connected with a vacuum channel (2), wherein the double-layer corrugated pipe (11) is provided with an outer layer (111) and an inner layer (112), an inner cavity (113) is formed between the outer layer (111) and the inner layer (112), and an intercommunicating hose (17) communicated with the vacuum channel (2) is arranged on the inner cavity (113); two ends of the inner cavity (113) are respectively sealed through a large sealing flange (12) and a sealing flange (13), the area of the end face of the large sealing flange (12) is equal to that of the end face of the vacuum channel (2), and the external normal vector of the end face of the large sealing flange (12) is opposite to that of the end face of the vacuum channel (2) in direction, so that the negative pressure stress borne by the large sealing flange (12) counteracts the negative pressure stress borne by the vacuum channel (2); the sealing flange (13) is fixed with the ground through a supporting upright post (16), so that the supporting upright post (16) counteracts the negative pressure stress applied to the sealing flange (13).
2. The stress compensating apparatus of a vacuum channel according to claim 1, wherein: the two ends of the double-layer corrugated pipe (11) are provided with connecting pipes (15) used for being connected with the vacuum channel (2), and after the double-layer corrugated pipe is installed, the axis of each connecting pipe (15) is collinear with the axis of the vacuum channel (2).
3. The stress compensating apparatus of a vacuum channel according to claim 2, wherein: the end face of the connecting pipe (15) is provided with a small sealing flange (14) so that the connecting pipe (15) is connected with the vacuum channel (2) in a sealing mode.
4. The stress compensating apparatus of a vacuum channel according to claim 2, wherein: two ends of the intercommunicating hose (17) are respectively communicated with the inner cavity (113) and the connecting pipe (15).
5. A laser vacuum transmission channel comprises a channel body (3) used for communicating with an optical cabin (4), wherein the channel body (3) comprises a main section (31) and transition sections (32) positioned at two ends of the main section (31), and the transition sections (32) are used for being connected with the optical cabin (4); the method is characterized in that: stress-compensating device (1) comprising a vacuum channel (2) according to any of claims 1 to 4, one end of the stress-compensating device (1) being connected to a transition section (32) and the other end of the stress-compensating device (1) being connected to a main section (31).
6. The laser vacuum transmission channel of claim 5, wherein: stress compensation arrangement (1) includes double-layer corrugated pipe (11), the both ends of double-layer corrugated pipe (11) have and are used for connecting pipe (15) with passageway main part (3), the terminal surface of connecting pipe (15) is provided with sealed small flange (14), connecting pipe (15) are sealed through sealed small flange (14) with passageway main part (3).
7. The laser vacuum transmission channel of claim 5, wherein: the main section (31) has several sections of small sections, and the adjacent small sections are coaxially connected through the corrugated compensator (5).
8. A stress compensation method for a laser vacuum transmission channel, which applies the laser vacuum transmission channel of any one of claims 5-7, characterized in that: the two ends of the laser vacuum transmission channel are connected with optical cabins (4), and the method comprises the following steps: the method for compensating the negative pressure stress comprises the following steps:
s1: the negative pressure stress on the large sealing flange (12) is equal to and opposite to the difference between the negative pressure stress on the end face, far away from the laser vacuum transmission channel, of the optical cabin (4) and the negative pressure stress on the end face, close to the laser vacuum transmission channel, of the optical cabin (4), and the stress difference on the optical cabin (4) is balanced;
s2: the negative pressure stress on the sealing flange (13) is transmitted to the ground through the supporting upright post (16).
9. The method of claim 8, wherein the stress compensation comprises: the method for compensating the thermal expansion and cold contraction stress comprises the following steps:
s3: when the laser vacuum transmission channel expands with heat and contracts with cold, the telescopic function of the double-layer corrugated pipe (11) compensates the deformation of the laser vacuum transmission channel.
10. The method of claim 8, wherein the stress compensation comprises: in the step S1, the intercommunication hose (17) enables the pressure in the inner cavity (113) to be equal to the pressure in the laser vacuum transmission channel, so that the negative pressure stress on the unit area of the large sealing flange (12) is equal to the negative pressure stress on the unit area of the optical cabin (4), and the end face area of the large sealing flange (12) is controlled to be equal to the end face area of the laser vacuum transmission channel, so that the step S1 is realized.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0877912B1 (en) * | 1995-10-23 | 2002-12-18 | Carnegie Institution Of Washington | Strain monitoring system |
| CN103883833A (en) * | 2014-03-17 | 2014-06-25 | 江苏曙光压力容器有限公司 | Jacketed type corrugated pipe compensator |
| CN105697936A (en) * | 2016-04-05 | 2016-06-22 | 任宝全 | Method for manufacturing corrugated compensation structure for hollow-structure pipeline insulation |
| CN106247065A (en) * | 2016-08-08 | 2016-12-21 | 北京航天试验技术研究所 | A kind of compensate the structure of cryogenic piping temperature stress in vacuum chamber |
| CN108204523A (en) * | 2016-12-20 | 2018-06-26 | 核工业西南物理研究院 | A kind of compound pipeline complex pipeline vacuum penetrates component |
| CN113623549A (en) * | 2021-08-11 | 2021-11-09 | 南通曙光机电工程有限公司 | Vacuum compensator with leakage automatic alarm device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440018B (en) * | 2020-10-30 | 2024-03-15 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Telescopic compensation sealing mechanism of large-diameter vacuum pipeline and assembly method thereof |
-
2022
- 2022-08-02 CN CN202210922044.4A patent/CN115037367B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0877912B1 (en) * | 1995-10-23 | 2002-12-18 | Carnegie Institution Of Washington | Strain monitoring system |
| CN103883833A (en) * | 2014-03-17 | 2014-06-25 | 江苏曙光压力容器有限公司 | Jacketed type corrugated pipe compensator |
| CN105697936A (en) * | 2016-04-05 | 2016-06-22 | 任宝全 | Method for manufacturing corrugated compensation structure for hollow-structure pipeline insulation |
| CN106247065A (en) * | 2016-08-08 | 2016-12-21 | 北京航天试验技术研究所 | A kind of compensate the structure of cryogenic piping temperature stress in vacuum chamber |
| CN108204523A (en) * | 2016-12-20 | 2018-06-26 | 核工业西南物理研究院 | A kind of compound pipeline complex pipeline vacuum penetrates component |
| CN113623549A (en) * | 2021-08-11 | 2021-11-09 | 南通曙光机电工程有限公司 | Vacuum compensator with leakage automatic alarm device |
Non-Patent Citations (1)
| Title |
|---|
| 高真空多层绝热低温管道内管路波纹管应力非线性有限元分析;陈叔平等;《天然气工业》;20160425;全文 * |
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