CN214119201U - Vacuum sealing structure of general poling - Google Patents
Vacuum sealing structure of general poling Download PDFInfo
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- CN214119201U CN214119201U CN202022068335.0U CN202022068335U CN214119201U CN 214119201 U CN214119201 U CN 214119201U CN 202022068335 U CN202022068335 U CN 202022068335U CN 214119201 U CN214119201 U CN 214119201U
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Abstract
The utility model discloses a vacuum seal structure of general poling, including pipy poling, surround the poling bottom tube at the tubulose poling surface, this poling bottom tube is equipped with butt and thin end, and this butt terminal surface passes through to compress tightly between screw and the sealing flange, still includes first seal groove and first sealing washer and second seal groove and second sealing washer, the internal diameter of poling bottom tube is enough big: the inner cores in different apertures can be inserted between the tube-penetrating bottom tube and the tube-penetrating in a loose fit mode, and the inner cores in different apertures are matched with the tube-penetrating tubes with different tube diameters so as to meet the requirement of changing the diameter of the tube-penetrating under the condition that the tube-penetrating bottom tube does not need to be changed. Through the clearance between design poling, inner core and the poling bottom tube, can reach both easy to assemble and dismantlement, can guarantee sealed vacuum's requirement again, avoided adopting traditional method to change or repair the problem of the installation time overlength that the mother led to the fact and need the other equipment of dismouting on the mother.
Description
Technical Field
The utility model belongs to the technical field of the vacuum seal, especially, relate to a vacuum seal structure of general poling.
Background
In the vacuum equipment, often meet the condition of drawing the pipeline from the vacuum, according to different poling diameters, need reserve corresponding different internal diameter's mouth of pipe, when the poling diameter that needs to draw out changes, there are two kinds of ways under the normal condition: under the condition that time is allowed, the female part is detached from the equipment, the through pipe needing to be replaced on the female part is cut off and replaced by a new pipe, and the female part needs to be subjected to leak detection again after being welded because the through pipe needs to be welded again after being cut and a leak hole is inevitably generated in the welding process, so that the female part needs to be subjected to leak detection again after being welded, and corresponding leak detection tools and personnel equipment are equipped; in most cases, the long repair and leakage detection is not allowed, and the replacement time of the equipment is strictly limited; in most cases where this is not allowed, to achieve the need for quick replacement, when the poling diameter is changed, the entire poling tube stock is often replaced directly, which is much faster than cutting a single poling tube. However, the equipment needs to be dismantled before repairing or replacing a new mother part: many pipelines connected with equipment on the old female part are detached one by one, and the pipelines are required to be installed one by one again when the new female part is replaced, so that the time cost is very high. Also, it is very costly to directly replace the parent part, as shown in fig. 1, the quill of a cyclotron collects all the water and circuit pipes, which are all passed through the quill, and if a new parent part is newly manufactured and replaced by changing the diameter of one of the quill, it will generate an economic cost several tens times more. Meanwhile, after the accelerator operates for a period of time, the radiation dose level of the working environment is generally higher, and for workers who have to disassemble and assemble the equipment in the environment, the shorter the time required for equipment maintenance is, the less the damage to the workers is.
In summary, the prior art has not found a quick and cost effective method when the diameter of the pipe string is changed, or the replacement time is long, or extra work and time and economic costs are incurred.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide a vacuum seal structure of general poling, aim at solves when the poling diameter takes place the change, and the change time is long, produce extra work load and time and economic cost's problem.
The utility model provides the following technical proposal for solving the technical problem.
The utility model provides a vacuum seal structure of general poling, includes the tubulose poling, surrounds the poling bottom tube at tubulose poling surface, and this poling bottom tube is equipped with butt and thin end, and this butt terminal surface compresses tightly through between screw and the sealing flange, still includes first seal groove and first sealing washer and second seal groove and second sealing washer, its characterized in that: the inner diameter of the pipe penetrating bottom pipe is large enough: the inner cores in different apertures can be inserted between the tube-penetrating bottom tube and the tube-penetrating in a loose fit mode, and the inner cores in different apertures are matched with the tube-penetrating tubes with different tube diameters so as to meet the requirement of changing the diameter of the tube-penetrating under the condition that the tube-penetrating bottom tube does not need to be changed.
The inner core is also provided with a thick end and a thin end, the thick end face of the tube penetrating bottom tube is provided with a step with the diameter and the thickness matched with those of the thick end face of the inner core, the thick end face of the inner core is embedded into the step, and the step is used for ensuring the compression and the vacuum sealing between the thick end face of the inner core and the flange end cover.
The center of the end face of the thick end of the inner core is provided with a first sealing groove and a sealing ring around the pipe penetration, and the sealing ring is used for preventing air in gaps between the inner core and the pipe penetration and between the inner core and the flange end cover from entering and ensuring vacuum sealing at the position; the large-radius part of the end face of the thick end of the tube penetrating bottom tube, which is close to the screw, is circumferentially provided with a second sealing groove and a sealing ring, and the sealing groove and the sealing ring are used for preventing air in a gap between the tube penetrating bottom tube and the flange end cover from entering and ensuring vacuum sealing of the part.
The selection of the gap between the inner core and the bottom tube of the pipe-through is based on the following criteria: the position where the thick end of the inner core is matched with the bottom tube of the poling pipe is reserved with a gap of 0.5 mm in the radial direction, namely the diameter difference of the two parts at the position is 1 mm; the position where the thin end of the inner core is matched with the bottom tube of the poling tube is reserved with a gap of 0.1 mm in the radial direction, namely the diameter difference of the two parts at the position is 0.2 mm; a gap of 0.15 mm is reserved in the radial direction at the position where the inner core is matched with the through pipe, namely the diameter difference of the two parts at the position is 0.3 mm; the position of the sealing flange matched with the through pipe is reserved with a gap of 0.15 mm in the radial direction, namely the diameter difference of the position of the two parts is 0.3 mm. Therefore, the vacuum sealing of the through pipe can be ensured, and the on-site assembly is facilitated.
The utility model has the advantages of
1. The utility model discloses general poling structure is equipped with great clearance through adopting between poling and the poling bottom tube, make the poling wear out from inside to outside relatively easily, the back is worn out to the poling, embolia the inner core from the outside, through the design poling, clearance between inner core and the poling bottom tube, can reach both easy to assemble and dismantlement, can guarantee sealed vacuum requirement again, more convenient part lies in having avoided adopting traditional approach to change or has repaiied the installation time overlength that the master caused and need the problem of other equipment of dismouting on the master. Meanwhile, when the outer diameter of the through pipe is not consistent with the design or the size needs to be changed, the problem can be solved by changing the inner core.
2. The utility model discloses a change the corresponding relation between the element and obtained unexpected effect. The corresponding relation between the change elements is that the corresponding relation between the inner diameter size of the bottom tube of the tube penetrating pipe and the outer diameter size of the tube penetrating pipe is changed, the inner diameter size of the bottom tube of the tube penetrating pipe before improvement is approximately equal to the outer diameter size of the tube penetrating pipe, the inner diameter size of the bottom tube of the tube penetrating pipe is improved to be larger than the outer diameter size of the tube penetrating pipe, due to the fact that the gap between the inner diameter size and the outer diameter size is enlarged, an inner core and a sealing structure can be added between the bottom tube of the tube penetrating pipe and the tube penetrating pipe, and the requirement of vacuum sealing of the tube penetrating pipes with.
Drawings
FIG. 1 is a diagram illustrating the effect of the application of the vacuum sealing structure of the through pipe;
FIG. 2-1 is a perspective view showing a structure of a conventional piercing tube in a vacuum sealing manner according to the prior art;
FIG. 2-2 is a cross-sectional view showing a structure of a vacuum sealing method of a conventional piercing pipe according to the prior art;
FIG. 3-1 is a perspective view of the present general purpose poling tube in a vacuum sealing manner;
FIG. 3-2 is a cross-sectional view of the universal feedthrough in a vacuum-tight manner;
in the figure, 1: a pipe penetrating female part; 2: a vacuum sealing structural part of a conventional pipe penetrating device; 3: a vacuum sealing structural member of a universal pipe penetration; 2-1: pipe penetration; 2-2: penetrating a bottom pipe; 2-3: sealing the flange; 2-4: a screw; 2-5: a seal ring; 3-1: pipe penetration; 3-2: penetrating a bottom pipe; 3-3: an inner core; 3-4: a seal ring; 3-5: sealing the flange; 3-6: a screw; 3-7, sealing ring.
Detailed Description
The technical scheme is further explained by combining the accompanying drawings as follows:
principle of utility model
1. The problem of replacing the perforation sealing structures with different diameters by adopting a cutting method is solved. The connection of the pipe penetrating sealing structure and the female part is realized by welding the outer pipe penetrating bottom pipe and the female part together, the whole sealing structure is cut off from the female part when the pipe penetrating structure with different apertures is replaced, and the pipe penetrating bottom pipe and the female part are welded again when the pipe penetrating sealing structure is replaced with a new pipe penetrating structure. The welding parts are contacted with air during welding to generate air holes, and when the air holes exceed an allowable range, vacuum is leaked, so that the welding parts are called leak holes. The detection of the leak is very troublesome and time-consuming, and repair welding is repeated for the detected leak until the vacuum degree requirement is met. The leak hole is caused by the welding link when the through pipe and the through pipe sealing structure are replaced.
2. The problem is solved by avoiding welding ring joints. If the method is adopted, the cutting link is saved when the penetrating pipes with different apertures are replaced, and the welding link can be avoided only by drawing out the penetrating pipes in the penetrating pipe sealing structure for replacement. The utility model discloses a method start from the internal diameter that changes the poling bottom tube, the internal diameter of traditional method poling bottom tube approximately equals for the tight fit with the external diameter of poling, and the utility model discloses the internal diameter of poling bottom tube is enough to be greater than the external diameter of poling to the inner core has been increased between poling bottom tube and poling. The inner core is used for fixing and adjusting the radial position of the penetrating pipe at the bottom of the penetrating pipe, and the inner diameter of the inner core is correspondingly adjusted along with the difference of the outer diameter of the penetrating pipe so as to meet the requirement of fixing the radial position of the penetrating pipe. (since the poling bottom tube is not changed, the outer diameter of the inner core does not need to be changed)
3. Only the vacuum leakage between the tube-penetrating bottom tube and the female member is avoided, and the vacuum leakage between the tube-penetrating bottom tube and the inner core and between the inner core and the tube-penetrating member is ensured. If vacuum sealing cannot be guaranteed when the bottom tube and the inner core of the tube penetrating device are installed, or the sealing performance between the tube penetrating device and the inner core and between the bottom tube and the inner core of the tube penetrating device is not good enough, the leak hole needs to be measured again in the same way as the leak hole after welding. The utility model discloses a method is: the sealing ring is added at the position with the gap, and the gap between the inner core and the bottom tube of the tube penetrating is increased due to the addition of the inner core, and the sealing groove and the sealing ring are added at the position of the newly added gap. Still need to guarantee the degree of cooperation between poling, poling bottom tube, the inner core in addition, the cooperation is too tight be convenient for install, the cooperation is too loose can not guarantee vacuum seal, so the utility model discloses a following four group's mounting dimension: a gap of 0.5 mm is reserved in the radial direction at the position where the thick end of the inner core is matched with the bottom tube of the poling, namely the diameter difference of the two parts at the position is 1 mm; the thin end of the inner core 3-3 is matched with the bottom tube 3-2 of the poling pipe, a gap of 0.1 mm is reserved in the radial direction, namely the diameter difference of the position of the two parts is 0.2 mm; a gap of 0.15 mm is reserved in the radial direction at the position where the inner core 3-3 is matched with the through pipe 3-1, namely the diameter difference of the position of the two parts is 0.3 mm; at the position where the sealing flange is matched with the through pipe, a gap of 0.15 mm is reserved in the radial direction, namely, the diameter difference of the position of the two parts is 0.3 mm. Tests prove that the vacuum sealing of the pipe penetrating is ensured, and the field assembly is facilitated.
Based on the above utility model principle, the utility model designs a vacuum seal structure of general poling.
A vacuum sealing structure of a universal poling is shown in figures 3-1 and 3-2, and comprises a tubular poling 3-1, a poling bottom pipe 3-2 surrounding the outer surface of the tubular poling 3-1, a thick end and a thin end, wherein the thick end surface of the poling bottom pipe 3-2 is tightly pressed with a sealing flange 3-5 through a screw 3-6, a first sealing groove and a first sealing ring 3-4, and a second sealing groove and a second sealing ring 3-7, and is characterized in that: the inner diameter of the pipe penetrating bottom pipe is large enough: the inner cores 3-3 with different apertures can be inserted between the tube bottom penetrating tube 3-2 and the tube penetrating tube 3-1 in a loose fit mode, and the inner cores 3-3 with different apertures are matched with the tube penetrating tubes 3-1 with different tube diameters, so that the requirement of changing the diameter of the tube penetrating without replacing the tube bottom penetrating tube 3-2 is met.
The inner core 3-3 is also provided with a thick end and a thin end, the thick end face of the tube penetrating bottom tube is provided with a step with the diameter and the thickness matched with those of the thick end face of the inner core, the thick end face of the inner core is embedded into the step, and the step is used for ensuring the compression and the vacuum sealing between the thick end face of the inner core and the flange end cover.
A first sealing groove and a sealing ring 3-7 are arranged at the center of the end face of the thick end of the inner core around the pipe penetration, and the sealing ring 3-7 is used for preventing air in gaps between the inner core and the pipe penetration and between the inner core and the flange end cover from entering and ensuring vacuum sealing at the position; the large-radius part of the end face of the thick end of the tube penetrating bottom tube, which is close to the screw 3-6, is circumferentially provided with a second sealing groove and a sealing ring 3-4, and the sealing groove and the sealing ring 3-4 are used for preventing air in a gap between the tube penetrating bottom tube and the flange end cover from entering and ensuring vacuum sealing at the position.
The gap between the inner core 3-3 and the bottom tube 3-2 is selected according to the following standard: the position where the thick end of the inner core is matched with the bottom tube of the poling pipe is reserved with a gap of 0.5 mm in the radial direction, namely the diameter difference of the two parts at the position is 1 mm; the thin end of the inner core 3-3 is matched with the bottom tube 3-2 of the poling pipe, a gap of 0.1 mm is reserved in the radial direction, namely the diameter difference of the position of the two parts is 0.2 mm; a gap of 0.15 mm is reserved in the radial direction at the position where the inner core 3-3 is matched with the through pipe 3-1, namely the diameter difference of the position of the two parts is 0.3 mm; the position of the sealing flange matched with the through pipe is reserved with a gap of 0.15 mm in the radial direction, namely the diameter difference of the position of the two parts is 0.3 mm. Therefore, the vacuum sealing of the through pipe can be ensured, and the on-site assembly is facilitated.
Example (b):
as shown in fig. 3-1 and 3-2, when the pipe needs to be replaced, 3-6 (screws) are detached, 3-5 (sealing flanges) are detached, 3-7 (sealing rings) are detached, 3-3 (original inner cores) are taken down, 3-1 (original pipe) is taken out, 3-1 (new pipe) is installed, 3-3 (inner cores with inner diameters matched with the outer diameters of the new pipes) are sleeved, 3-7 (sealing rings matched with the outer diameters of the new pipes) are installed, 3-4 (sealing rings) are confirmed to be normally installed, 3-5 (sealing flanges) are installed, 3-6 (screws) are installed, and vacuum sealing of the new pipes is completed.
In fig. 2-1 and 2-2, with the structure of the conventional pipe penetration, due to the requirement of vacuum sealing, the gap between 2-1 (pipe penetration) and 2-2 (pipe penetration bottom pipe) needs to be strictly controlled, while under the general field condition, 2-1 (pipe penetration) usually needs to penetrate from inside to outside, and the operation position and space are usually limited, so that the difficulty is high during actual installation, and once the matched sizes between 2-1 (pipe penetration) and 2-2 (pipe penetration bottom pipe) are not consistent, a great deal of rework and even rejection of the pipe penetration female part can be caused.
In fig. 3-1 and 3-2, a structure of a universal tube is used, a larger gap can be formed between 3-1 (tube penetrating) and 3-2 (tube penetrating bottom tube), so that the 3-1 (tube penetrating) can easily penetrate out from the inside to the outside, 3-3 (inner core) is sleeved in from the outside after the 3-1 (tube penetrating) penetrates out, the gap between the 3-1 (tube penetrating), the 3-3 (inner core) and the 3-2 (tube penetrating bottom tube) is designed, the requirements of convenient installation and disassembly and guarantee of sealed vacuum can be met, and once the outer diameter of the 3-1 (tube penetrating) is inconsistent with or changed from the design, the problems can be solved by changing the 3-3 (inner core).
In fig. 3-1, 3-2, the gap between 3-3 (inner core) and 3-2 (bottom-tube) can be selected with reference to the following criteria: 3-3 (inner core) thick end and 3-2 (poling bottom tube) matched position, a gap of 0.5 mm is reserved in the radial direction, namely the diameter difference of the two parts at the position is 1 mm; 3-3 (inner core) thin end and 3-2 (poling bottom tube) matched position, the radial direction keeps 0.1 mm gap, namely the diameter difference of the position of the two parts is 0.2 mm; 3-3 (inner core) and 3-1 (poling) are matched, a gap of 0.15 mm is reserved in the radial direction, namely the diameter difference of the two parts at the position is 0.3 mm; 3-5 (sealing flange) and 3-1 (pipe penetrating), and a gap of 0.15 mm is reserved in the radial direction, namely the diameter difference of the two parts at the position is 0.3 mm. Thus, the vacuum sealing of 3-1 (pipe penetration) can be ensured, and the assembly on site is convenient.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (4)
1. The utility model provides a vacuum seal structure of general poling, includes the tubulose poling, surrounds the poling bottom tube at tubulose poling surface, and this poling bottom tube is equipped with butt and thin end, and this butt terminal surface compresses tightly through between screw and the sealing flange, still includes first seal groove and first sealing washer and second seal groove and second sealing washer, its characterized in that: the inner diameter of the pipe penetrating bottom pipe is large enough: the inner cores in different apertures can be inserted between the tube-penetrating bottom tube and the tube-penetrating in a loose fit mode, and the inner cores in different apertures are matched with the tube-penetrating tubes with different tube diameters so as to meet the requirement of changing the diameter of the tube-penetrating under the condition that the tube-penetrating bottom tube does not need to be changed.
2. The vacuum sealing structure of the universal poling pipe according to claim 1, characterized in that: the inner core is also provided with a thick end and a thin end, the thick end face of the tube penetrating bottom tube is provided with a step with the diameter and the thickness matched with those of the thick end face of the inner core, the thick end face of the inner core is embedded into the step, and the step is used for ensuring the compression and the vacuum sealing between the thick end face of the inner core and the flange end cover.
3. The vacuum sealing structure of the universal poling pipe according to claim 1, characterized in that: the center of the end face of the thick end of the inner core is provided with a first sealing groove and a sealing ring around the pipe penetration, and the sealing ring is used for preventing air in gaps between the inner core and the pipe penetration and between the inner core and the flange end cover from entering and ensuring vacuum sealing at the position; the large-radius part of the end face of the thick end of the tube penetrating bottom tube, which is close to the screw, is circumferentially provided with a second sealing groove and a sealing ring, and the sealing groove and the sealing ring are used for preventing air in a gap between the tube penetrating bottom tube and the flange end cover from entering and ensuring vacuum sealing of the part.
4. The vacuum sealing structure of the universal poling pipe according to claim 1, characterized in that: the selection of the gap between the inner core and the bottom tube of the pipe-through is based on the following criteria: the position where the thick end of the inner core is matched with the bottom tube of the poling pipe is reserved with a gap of 0.5 mm in the radial direction, namely the diameter difference of the two parts at the position is 1 mm; the position where the thin end of the inner core is matched with the bottom tube of the poling tube is reserved with a gap of 0.1 mm in the radial direction, namely the diameter difference of the two parts at the position is 0.2 mm; a gap of 0.15 mm is reserved in the radial direction at the position where the inner core is matched with the through pipe, namely the diameter difference of the two parts at the position is 0.3 mm; the position of the sealing flange matched with the through pipe is reserved with a gap of 0.15 mm in the radial direction, namely the diameter difference of the position of the two parts is 0.3 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022068335.0U CN214119201U (en) | 2020-09-18 | 2020-09-18 | Vacuum sealing structure of general poling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022068335.0U CN214119201U (en) | 2020-09-18 | 2020-09-18 | Vacuum sealing structure of general poling |
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| CN214119201U true CN214119201U (en) | 2021-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112113038A (en) * | 2020-09-18 | 2020-12-22 | 中国原子能科学研究院 | Vacuum sealing structure of general poling |
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- 2020-09-18 CN CN202022068335.0U patent/CN214119201U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112113038A (en) * | 2020-09-18 | 2020-12-22 | 中国原子能科学研究院 | Vacuum sealing structure of general poling |
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