CN214851955U - Quick-clamping type vacuum insulation sealing connection device - Google Patents
Quick-clamping type vacuum insulation sealing connection device Download PDFInfo
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- CN214851955U CN214851955U CN202120132161.1U CN202120132161U CN214851955U CN 214851955 U CN214851955 U CN 214851955U CN 202120132161 U CN202120132161 U CN 202120132161U CN 214851955 U CN214851955 U CN 214851955U
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Abstract
The invention discloses a quick-clamping type vacuum insulation sealing connecting device which comprises two metal connecting pipelines, two metal KF series flanges, two insulation sleeves, an insulation center support, an O-shaped sealing ring and a metal quick-clamping type clamp; one of the two metal connecting pipelines is connected with an accelerator, and the other metal connecting pipeline is connected with a production target; the insulating center support is arranged between two end faces of the two metal connecting pipelines and two end faces of the two KF series flanges, and the insulating sleeves are respectively sleeved on the outer walls of the respective KF series flanges in a surrounding manner and used for radially isolating the conductivity between the KF series flanges and the quick-clamp type clamps; the inner diameter D of the insulating center support is larger than the drift diameter D of the metal connecting pipeline, and the high-power beam is reduced from being swept onto the insulating center support. According to the invention, by interchanging the positions of the insulating material and the metal material on the beam transition pipeline, the problem that the insulating pipeline is easily damaged by high-power beams to cause vacuum leakage in the prior art is solved, and the problem of quick disassembly is also solved.
Description
Technical Field
The utility model relates to a field of cyclotron, concretely relates to is existing vacuum insulation in the accelerator is used and has the swift convenient requirement of installation again, promptly a fast jaw type vacuum insulation sealing connection device.
Background
The cyclotron is a particle accelerator, the core structure of which is a magnetic field system and a Radio Frequency (RF) system, and under the combined action of a magnetic field and an electric field, charged particles make a cyclotron motion, and the high-frequency electric field is used to repeatedly accelerate the cyclotron motion of the charged particles. In order to prevent the charged particles from losing energy by collision with other atoms in motion, the charged particles need to be provided with high vacuum under the operation condition.
The medical cyclotron production target is used for producing radioactive isotopes such as 15O, 11C, 13N and 18F, the radioactive isotopes are the components of the body, the nuclides are produced through nuclear reaction of the production target, various radioactive medicines are chemically synthesized through a synthesis module box, and therefore the radioactive isotopes participate in metabolism of the human body, and the synthetic medicine 18F-FDG of the F-18 can simulate glucose metabolism. By applying 18FDG and PET-CT imaging, the primary and metastatic focuses of the whole tumor can be discovered at an early stage, and the benign and malignant tumors can be accurately judged, so that the clinical treatment decision can be correctly guided.
A transition connection device, also called a production target beam transition duct, is required between the beam led out from the accelerator and the production target, the production target beam transition duct in the prior art is shown in fig. 1, a relatively long insulating duct and a relatively short metal central support are arranged between the accelerator and the production target, and the two ducts jointly form the beam transition duct before the beam reaches the production target. The reason for adopting a relatively long beam transition pipeline is as follows: the beam is led out from the accelerator, and in order to solve the problem of mechanical interference at the outlet of the accelerator, the beam transition pipeline needs to be made long enough to lead the beam out from the accelerator; the reason why the insulating pipeline is adopted in one part of the beam transition pipeline is as follows: when the production target is used for producing isotopes, the beam current generated by the accelerator needs to be adjusted, meanwhile, relevant parameters (intensity, energy divergence and the like) of the actual beam current need to be monitored at the position of the production target, and due to the fact that the relevant parameter measurement of the beam current is weak signals, and numerous other relevant electronic devices (high-voltage signals, low-voltage signals, high-frequency signals and the like) on the accelerator can affect the signal monitoring of the beam current. Therefore, in the conventional method, a section of insulating transition pipeline is arranged between the accelerator and the production target, clutter signals are isolated by the insulating pipeline, and the interference of external signals is reduced to the maximum extent when beam monitoring of the production target position is realized.
One of the problems with the existing production target connecting device is: insulation can only be guaranteed and vacuum cannot be guaranteed. The high-power beam is applied to the insulating pipeline, so that the insulating pipeline is damaged due to 'gas outlet', and the vacuum degree of the main vacuum of the accelerator cannot be ensured when the insulating pipeline is damaged. The second problem of the conventional production target connecting device shown in fig. 1 is that: the disassembly of the insulated pipeline is time-consuming and has large radiation dose to human body. The reason for this time is that: the connection of the insulating pipeline and the accelerator is a mode of circumferential bolt connection, all bolts of a circumferential ring need to be screwed off during disassembly, and the disassembly operation is completely manual operation, so that the radiation dose received by workers is large.
SUMMERY OF THE UTILITY MODEL
The utility model provides a quick-clamp vacuum insulation sealing connecting device for solving the problems in the prior art, and aims to solve the problem that the production target connecting device in the prior art can only realize insulation and is difficult to realize vacuum sealing; the second purpose is to solve the problem that the production target connecting device in the prior art wastes time and labor when being detached, so that a person is subjected to larger radiation dose.
The utility model discloses a solve its technical problem and propose following technical scheme:
a quick-clamping type vacuum insulation sealing connecting device is characterized in that: the device comprises two metal connecting pipelines, two metal KF series flanges, two insulating sleeves, an insulating center bracket, an O-shaped sealing ring and a metal quick-clamping type hoop; one of the two metal connecting pipelines is connected with an accelerator, and the other metal connecting pipeline is connected with a production target; the two KF series flanges are respectively welded at one end of each metal connecting pipeline and are arranged oppositely; the insulating center support and the O-shaped sealing ring are arranged between two end faces of the two metal connecting pipelines and between two end faces of the two KF series flanges, and the insulating center support and the O-shaped sealing ring have the function of meeting the requirements of vacuum sealing and insulation between the two end faces of the two KF series flanges; the insulating sleeves are respectively sleeved on the outer walls of the KF series flanges in a surrounding manner, and are used for radially isolating the conductivity between the KF series flanges and the quick-clamp type clamp and playing a role in insulating and isolating; the inner diameter D of the insulating center support is larger than the drift diameter D of the metal connecting pipeline, and the high-power beam is reduced from being swept onto the insulating center support.
The length of the metal connecting pipeline connected with one end of the accelerator is long enough to meet the length requirement of leading the beam out of the accelerator; the length of the insulating center support is short enough to only meet the length requirement of isolating weak clutter signals; the length of the metal connecting pipeline connected with one end of the accelerator comprises 200 mm, and the length of the insulating center support comprises 6 mm.
KF series flange and quick-jaw formula clamp adopt the aluminum alloy material, can guarantee flange joint's intensity, can reduce it again and be activated by the irradiation.
And each of the two insulating sleeves is formed by combining two circular ring surfaces which mutually form an included angle larger than 90 degrees, wherein one circular ring surface is axially parallel to the connecting pipeline, and the other circular ring surface is axially inclined from the center to two ends.
Insulating center support is formed by two radial rings stack: the width of the inner ring is larger than that of the outer ring, the width of the outer ring is smaller than the diameter of the O-shaped sealing ring, and the ring surface of the outer ring is a cambered surface and is used for supporting the O-shaped sealing ring; the inner circular ring supports KF series flanges on the connecting pipeline through the connecting pipeline positioned at two sides of the end face and through the ring face.
The O-shaped sealing ring is supported by an outer circular ring of the insulation center support and is placed between the two KF series flanges, and absolute contact between the O-shaped sealing ring and the flanges is caused by extrusion of the two KF series flanges, so that high-vacuum sealing is realized.
The utility model has the advantages of
1. The utility model solves the difficult problems that the prior art is difficult to solve that the insulating pipeline has poor heat resistance, generates 'air out' after being hit by high-power beam and causes poor vacuum sealing by changing the relationship of the element, on one hand, the insulating central bracket has very short length and D > D, so that the probability of the insulating pipeline being bombarded by the beam is greatly reduced, the service life is prolonged, so that the vacuum is maintained; on the other hand, the pipeline connected with one end of the accelerator is set to be a metal pipeline, the length of the metal pipeline accounts for 97% of the total length of the transition pipeline, the heat of the high-power beam striking the pipeline is quickly dissipated due to quick heat dissipation of the metal pipeline, and the probability that the insulating center support is damaged by the high-power beam is very small through the change of the position relation of the insulating material and the metal material and D > D, so that the problem that the existing insulating material is damaged due to 'gas out' is solved; simultaneously, through with insulating center support and clamp lug connection, can dismantle the clamp simultaneously with center support and get off, change two such processes of dismantling the clamp earlier, dismantle insulating pipeline and accelerator again originally, change into the one process of dismantling the clamp only, easy operation is swift.
2. The utility model discloses a based on KF series fast pincers flange, through the sealing washer and the insulating center support that increase insulating cover and design, under the condition that does not change original pipeline flange joint structure, can realize the insulation between the both ends pipeline when guaranteeing the high vacuum seal requirement.
3. Compared with the prior metal type central support structure, the insulating central support ensures the absolute insulation of the flange connection of the two pipelines. Meanwhile, by optimizing the structure of the insulating center support, the phenomenon that high-power beams are swept to the surface of the insulating center support to cause gasification of the insulating center support is reduced, so that vacuum is influenced, and insulation failure is caused.
Drawings
FIG. 1 is a schematic view of a prior art production target attachment apparatus;
in fig. 1: 7-1: the direction of the accelerator beam; 7-2: an insulated transition duct; 7-3: length of the insulated pipe; 7-4: a KF flange of insulating material; 7-5: clamping a hoop; 7-6: a seal ring; 7-7: a metal center support;
7-8: producing a target;
FIG. 2 is a schematic view of the quick-clamping vacuum insulation sealing connection device of the present invention;
FIG. 3 is an enlarged view A of FIG. 2;
FIG. 4 is a schematic view of the insulating center bracket of the present invention;
fig. 5 is a schematic view of the insulating center support and the sealing ring of the present invention;
FIG. 6 is a structural view of the insulating sleeve;
FIG. 7 is a schematic diagram showing the relationship between small D and large D according to the present invention;
in the figure, 1: a metal connecting pipe; 2, insulating sleeve of fast clamp; 3: an insulating center support; 4: a fluororubber O-ring seal; 5: a quick clamp type hoop; 6: a KF series flange; 2-1; an insulating center support; 2-2 fluororubber O-shaped sealing ring.
Detailed Description
The design principle of the utility model
1. The design principle solves the problem of vacuum sealing. The utility model provides a vacuum seal problem adopts insulating center support + insulating cover to realize vacuum seal. Firstly, the design principle of an insulating center support with small proportional length is as follows: the beam led out from the accelerator has a beam transition pipeline with a certain length before reaching the production target, the beam on the circular track is led out along the tangential direction through the beam transition pipeline with a certain length, and if the beam transition pipeline is too short and is too close to the outlet of the accelerator, the beam cannot be led out due to mechanical interference at the outlet of the accelerator. The prior art beam transition duct is composed of an insulating material with a large proportional length and a metal central support with a small proportional length, as shown in fig. 1. Because the insulating material generally resists high temperature and is not feasible, when high-power beams impact on the insulating material, the insulating pipeline is easy to outgas, and the sealing in the pipeline is damaged. The utility model discloses having exchanged the position with prior art's insulating material and metal material, adopting the beam current transition pipeline of "the metal material of large scale length + the insulating center support of small scale length" to replace the beam current transition pipeline of "the insulating material of large scale length + the metal center support of small scale length" of prior art, insulating center support axial length only a few millimeters and insulating center support's diameter D is enough to be greater than metal pipeline's diameter D. The size is large enough, namely the diameter of D is larger than D under the condition that the height of a KF flange right-angle step is allowed, because D is larger than D, when the beam passes through the insulation center support, the probability that the beam hits the pipeline wall of the insulation center support is very small, and because the axial length of the insulation center support is designed to be only a few millimeters, the area of the insulation center support contacting the beam is further reduced. The utility model discloses insulating center support axial length can design very short reason is: because the measurement of the uA level weak signal is not the measurement of the high-voltage signal, the weak signal only needs to isolate the clutter signal, and therefore, the thickness of the signal only needs to be a few millimeters. In the case of high voltage breakdown measurements, the insulating material has a thickness requirement. In conclusion, because the utility model discloses the length of the metal connecting pipe of connecting accelerator one end accounts for than 97% in the beam transition pipeline for the most heat of beam transition pipeline can be dispelled very fast, and because insulating central line only accepts 3% heat, and the probability of accepting is also very little, and insulating central support's diameter D > D, consequently avoid the heat that high power beam produced to the destruction of insulating central support to the at utmost, guaranteed insulating central support's vacuum, solved current insulating pipeline because can't be high temperature resistant, "give vent to anger" the vacuum seal problem that produces; secondly, the design principle of the insulation sleeve is as follows: because keep apart clutter signal not only will keep apart the clutter signal after two axial metal connecting pipe are electrically conductive, still will keep apart the clutter signal after radial coming from clamp and the flange is electrically conductive, consequently, the utility model discloses still be equipped with insulating cover between clamp and KF flange. Thus, clutter signals caused by conduction between metal materials are isolated from all directions in the transverse and longitudinal directions.
2. The design principle of solving the problem of quick disassembly. The function of the clamps of the prior art production target connection devices is only that of the connection and not that of the quick removal of the insulated pipes: when insulating pipeline damaged, because insulating pipeline lug connection accelerator, must dismantle the insulating pipeline and get off with all screws of the pipeline week that the accelerator is connected during the dismantlement can, so, need two processes when dismantling insulating pipeline, firstly dismantle the clamp, secondly dismantle all screws of round on the pipeline, because the dismantlement time is long, the radiation dose that the staff received in the dismantlement process is bigger, has the harm healthy. The utility model discloses two kinds of materials in the transition pipeline have reversed the position, because accelerator end is connected is metal material's connecting tube, and metal material is fast, be difficult to damage to the heat dissipation of high power beam, so when needs change insulating center support, need not dismantle the metal insulation pipeline of being connected with the accelerator, and only dismantle insulating center support can, and dismantle insulating center support only need dismantle the clamp can, the dismantlement of clamp is very convenient, only need twist move a screw on the clamp can. This has been unexpected because the two materials on the transition duct reverse their position.
Based on the principle of the utility model discloses a fast jaw type vacuum insulation sealing connecting device
A quick-clamping type vacuum insulation sealing connecting device is shown in figures 2-7 and is characterized in that: the device comprises two metal connecting pipelines 1, two metal KF series flanges 6, two insulating sleeves 2, an insulating center bracket 3, an O-shaped sealing ring 4 and a metal quick-clamping type hoop 5; one of the two metal connecting pipelines 1 is connected with an accelerator, and the other metal connecting pipeline is connected with a production target; the two KF series flanges 6 are respectively welded at one end of each metal connecting pipeline and are oppositely arranged; the insulating center support 3 and the O-shaped sealing ring 4 are arranged between two end faces of the two metal connecting pipelines and two end faces of the two KF series flanges, and the function of the insulating center support is to meet the requirements of vacuum sealing and insulation between the two end faces of the two KF series flanges; the insulation sleeves 2 are respectively sleeved on the outer walls of the KF series flanges 6 in a surrounding manner, and are used for radially isolating the conductivity between the KF series flanges and the quick-clamp type clamps and playing a role in insulation and isolation; the inner diameter D of the insulating center support 3 is larger than the drift diameter D of the metal connecting pipeline 1, and the high-power beam sweeping to the insulating center support is reduced.
The length of the metal connecting pipeline 1 connected with one end of the accelerator is long enough to meet the length requirement of leading the beam out of the accelerator; the length of the insulating central support 3 is short enough to only meet the length requirement of isolating weak clutter signals; the length of the metal connecting pipeline connected with one end of the accelerator comprises 200 mm, and the length of the insulating center support comprises 6 mm.
And each of the two insulating sleeves 2 is formed by combining two ring-shaped ring surfaces which mutually form an included angle larger than 90 degrees, wherein one ring-shaped ring surface is axially parallel to the connecting pipeline, and the other ring-shaped ring surface is axially inclined from the center to two ends.
Insulating center support 3 is formed by two radial rings stack: the width of the inner ring is larger than that of the outer ring, the width of the outer ring is smaller than the diameter of the O-shaped sealing ring, and the ring surface of the outer ring is a cambered surface and is used for supporting the O-shaped sealing ring; the inner circular ring supports the KF series flange 6 on the connecting pipeline through the connecting pipeline positioned at two sides of the end face and through the ring face.
O type sealing washer 4 by the outer ring support of insulating center support 3, and place between two KF series flanges 6, through the extrusion of two KF series flanges 6, cause the absolute contact of 6 between O type sealing washer 4 and the flange to realize the sealed of high vacuum.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a quick-witted formula vacuum insulation sealing connection device which characterized in that: the device comprises two metal connecting pipelines, two metal KF series flanges, two insulating sleeves, an insulating center bracket, an O-shaped sealing ring and a metal quick-clamping type hoop; one of the two metal connecting pipelines is connected with an accelerator, and the other metal connecting pipeline is connected with a production target; the two KF series flanges are respectively welded at one end of each metal connecting pipeline and are arranged oppositely; the insulating center support and the O-shaped sealing ring are arranged between two end faces of the two metal connecting pipelines and between two end faces of the two KF series flanges, and the insulating center support and the O-shaped sealing ring have the function of meeting the requirements of vacuum sealing and insulation between the two end faces of the two KF series flanges; the insulating sleeves are respectively sleeved on the outer walls of the KF series flanges in a surrounding manner, and are used for radially isolating the conductivity between the KF series flanges and the quick-clamp type clamp and playing a role in insulating and isolating; the inner diameter D of the insulating center support is larger than the drift diameter D of the metal connecting pipeline, and the high-power beam is reduced from being swept onto the insulating center support.
2. The quick-clamping vacuum insulation sealing connection device according to claim 1, wherein: the length of the metal connecting pipeline connected with one end of the accelerator is long enough to meet the length requirement of leading the beam out of the accelerator; the length of the insulating center support is short enough to only meet the length requirement of isolating weak clutter signals; the length of the metal connecting pipeline connected with one end of the accelerator comprises 200 mm, and the length of the insulating center support comprises 6 mm.
3. The quick-clamping vacuum insulation sealing connection device according to claim 1, wherein: KF series flange and quick-jaw formula clamp adopt the aluminum alloy material, can guarantee flange joint's intensity, can reduce it again and be activated by the irradiation.
4. The quick-clamping vacuum insulation sealing connection device according to claim 1, wherein: and each of the two insulating sleeves is formed by combining two circular ring surfaces which mutually form an included angle larger than 90 degrees, wherein one circular ring surface is axially parallel to the connecting pipeline, and the other circular ring surface is axially inclined from the center to two ends.
5. The quick-clamping vacuum insulation sealing connection device according to claim 1, wherein: insulating center support is formed by two radial rings stack: the width of the inner ring is larger than that of the outer ring, the width of the outer ring is smaller than the diameter of the O-shaped sealing ring, and the ring surface of the outer ring is a cambered surface and is used for supporting the O-shaped sealing ring; the inner circular ring supports KF series flanges on the connecting pipeline through the connecting pipeline positioned at two sides of the end face and through the ring face.
6. The quick-clamping vacuum insulation sealing connection device according to claim 4, wherein: the O-shaped sealing ring is supported by an outer circular ring of the insulation center support and is placed between the two KF series flanges, and absolute contact between the O-shaped sealing ring and the flanges is caused by extrusion of the two KF series flanges, so that high-vacuum sealing is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120132161.1U CN214851955U (en) | 2021-01-19 | 2021-01-19 | Quick-clamping type vacuum insulation sealing connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120132161.1U CN214851955U (en) | 2021-01-19 | 2021-01-19 | Quick-clamping type vacuum insulation sealing connection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214851955U true CN214851955U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120132161.1U Active CN214851955U (en) | 2021-01-19 | 2021-01-19 | Quick-clamping type vacuum insulation sealing connection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214851955U (en) |
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2021
- 2021-01-19 CN CN202120132161.1U patent/CN214851955U/en active Active
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