DE202010007134U1 - Arrangement for protection against radiation leakage at sight glasses - Google Patents

Abstract

Arrangement for protection against radiation emission on sight glasses, in particular of vacuum-technical installations, comprising a window element permeable in the visible light range but absorbing in the area of damaging radiation,
characterized in that
A cap-like body is provided, the inner dimensions of which are matched to the respective contour of the flange or connecting piece with sight glass in order to at least partially fix the body in a form-fitting manner,
- The cap-like body has an opening or a passage in which the absorbent window member is inserted and fixed, wherein in the use state, the sight glass and window member are positioned substantially congruent to each other.

Description

The The invention relates to an arrangement for protection against radiation leakage on sight glasses, in particular vacuum installations, comprising a transparent in the range of visible light, however absorbing in the area of harmful radiation Window element according to the preamble of the claim 1.

It It is known that, in particular in applications in accelerator technology in vacuum ionizing radiation, eg. B. X-radiation arises, usually through the vacuum chamber Stainless steel is shielded. On sight glasses, the one Allow view into the respective vacuum chamber, but there is the risk of unwanted radiation leakage.

Around This risk potential has already been reduced proposed, on the actual sight glass another Window element to lay and fix with clamps. The further Window element has radiation-absorbing properties and serves to reduce the escape of unwanted X-radiation to a tolerable level.

The Attachment of an absorbent window element above the sight glass with the help of clamps or the like simple mechanical elements is due to the not clearly reproducible position between the additional window element and the sight glass as well the insufficient attachment technique disadvantageous. Furthermore There is still the risk of a side unwanted Radiation leakage.

From the DE 297 17 007 U1 a transparent protective cap for a measuring head is already known. This protective cap secures the location for mounting a Einschraubthermoelementes with appropriate measuring insert or similar means with standard protective tube. The previously known protective cap has a transparent area in order to take a look into the interior of the measuring head before unscrewing. Thus, any abnormalities in the form of liquids or condensate can be detected. Radiation protection is not guaranteed or intended.

From the DE 10 2008 048 586 A1 An eyepiece device for vacuum systems is previously known, comprising a sight glass. In order to realize an unobstructed view into the interior of a vacuum system, the disc of the viewing device has after DE 10 2008 048 586 A1 on the process chamber side facing at least one row of closely spaced bristles of spring steel wire, which are pivotable. The bristles can remove particles located on the surface of the wall of the process chamber when they are swiveled over on the pane. Although such a solution improves the see-through duration, it offers no protection against undesirable leakage of ionizing or other interfering radiation.

Out The above, it is therefore an object of the invention, a further developed Arrangement for protection against radiation leakage from sight glasses, in particular of vacuum equipment, indicate the radiation emission reduced in all conceivable directions and which safe at the appropriate Flange or neck of the sight glass can be fixed.

The Solution of the object of the invention is achieved by an arrangement according to the feature combination according to claim 1, the subclaims are at least expedient Represent refinements and developments.

It is therefore of an arrangement for protection against radiation leakage on sight glasses, in particular of vacuum technical installations starting, comprising a transparent in the visible light, however absorbing in the area of harmful radiation Window element.

According to the invention a cap-like body provided, the internal dimensions on the respective contour, in particular outer contour of the flange or neck with sight glasses are tuned to the cap-like Body at least partially positive fit on the flange or fixing spigot.

Of the cap-like body also has an opening or a passage in which the absorbent Window element is introduced and fixed, being in use Sight glass and window element substantially congruent to each other are positioned.

Ausgestaltend The cap-like body has a circular Cross-section, wherein the peripheral cap edge means for fastening the body has at the flange or neck.

at In another embodiment, the means for fixing as directed radially to the center of the cap-like body Pin or grub screws executed.

The opening or the passage of the cap-like body has a towards the cap bottom grading to the absorbent window element keep under positive fit, with the cap top means are provided for releasably fixing the window element.

The Means for releasably holding the window element are, for example formed as cap screws, wherein portions of the screw head and / or an existing washer the window element in the cap-like Secure body.

Of the cap-like body is preferably made of a metallic Material, especially stainless steel material manufactured.

Of the cap-like body becomes fit and solvable fixed to the respective flange or socket, for this purpose the pin or grub screws directed towards the center can be used.

The Pin or grub screws penetrate the cap edge to be in the assembled state to produce a positive connection to the sight glass flange, wherein the Pin or grub screws distributed over the cap edge circumference are arranged.

In the opening or the passage are absorbing window elements different thickness or thickness can be used, and it is basically an interchangeability.

at In a preferred embodiment, the absorbent Window element made of leaded glass.

Of the Cap-like body can fit for different Nominal diameters of appropriate sight glasses are manufactured, without the principle of the invention explained above leave.

at an alternative or complementary form of attachment exists the possibility in the cap-like body, in particular in the area of the inside of the cap edge, an elastic clamping ring insert to arrange, the force-locking fixing to the flange or nozzle is used.

The Invention is based on an embodiment as well explained in more detail with the aid of figures become.

in this connection demonstrate:

1 a plan view of the arrangement for protection against radiation leakage;

2 a sectional view taken along the line AA according to 1 ;

3 the detailed representation Z according to 2 ;

4 the detailed representation Y according to 2 and

5 perspective views of the protective cap with window element before and after mounting on a sight glass flange, the latter case in teilweggeschnittener representation.

According to the invention is made of a, preferably made of a stainless steel material body 1 gone out, like in the 1 and 2 shown, has a circular cross-section.

The cap-like body 1 owns a cap top 2 and a cap base 3 ,

The inner dimensions of the cap-like body 1 are to the respective contour of the sight glass flange or sight nozzle 4 (S. 5 ) adapted to the cap-like body 1 to fix, as indicated in the right-hand illustration 5 (partially broken) is shown.

The circumferential cap edge 5 It also encloses laterally the corresponding flange or neck of the vacuum system with existing sight glass, so that a radiation emission in this direction can be effectively prevented.

In the state of the mounted protective cap according to illustration 5 , right part of the image, lie the absorbing window element 6 and the actual sight glass virtually congruent, ie congruent one above the other.

For receiving the absorbent window element 6 shows the cap-like body 1 an opening or passage in which the absorbent window member 6 is inserted and fixed.

The attachment can be done here with the help of a screw 7 take place in a respective blind hole 8th ( 3 ) is introduced.

This is the head of the screw 7 inwards over and fixes the upper edge of the absorbent window element 6 ,

In the illustration shown after the 1 and 5 are several staggered holes 8th with screws 7 present to the absorbent window element 6 sure to fix.

The circumferential cap edge 5 moreover has means for attaching the cap-like body 1 on the flange or nozzle 4 on.

The means for attaching can be directed to the center of the body pin or grub screws 9 be in threaded through holes 10 ( 4 ) are introduced and directed to the center of the cap assembly.

The opening or passage has a directed towards the cap base gradation 11 (S. 1 and 3 ), where the grading 11 a lower stop for the inserted absorbent window element 6 represents.

The grading fixed so in conjunction with the means for releasable holding, ie the corresponding screws 7 , the window element in the cap-like body 1 , wherein an interchangeability, based on the window element 6 , preserved.

The cap-like body 1 is, as from the representation after 5 , right part of the picture visible, fitting and detachable on the respective flange or socket 4 attached.

The pin or grub screws 9 penetrate the cap edge 5 , so that in the assembled state, a frictional connection to the sight glass flange 4 is made, with the pin or grub screws 9 distributed over the cap edge circumference are arranged.

In an alternative form of attachment it is possible to provide in the cap-like body an elastic clamping ring insert for non-positive fixing to the flange or neck. This clamping ring can also in addition to attachment with pin or grub screws 9 to be available.

The presented arrangement for protection against radiation leakage is fundamental can be designed for all conceivable nominal diameters of sight glass flanges, so unwanted leakage of ionizing primary or secondary radiation by the proposed exact To avoid fit. Both the assembly and disassembly is realizable with a few simple steps.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 29717007 U1 [0005]
• - DE 102008048586 A1 [0006, 0006]

Claims (11)

Arrangement for protection against radiation emission on sight glasses, in particular of vacuum-technical systems, comprising a transparent in the visible light, but in the area damaging radiation absorbing window element, characterized in that - a cap-like body is provided, the inner dimensions of the respective contour of the flange or The cap-like body has an opening or passage in which the absorbent window element is inserted and fastened, wherein in use the sight glass and window element are positioned substantially congruent to each other. Arrangement according to claim 1, characterized that the cap-like body is a circular Has cross section, wherein the peripheral cap edge means for Attaching the body has on the flange or neck. Arrangement according to claim 2, characterized that means for fixing as radial to the center of the body directed pin or grub screws are executed. Arrangement according to one of the preceding claims, characterized in that the opening or the passage having a cap base directed to the absorbent window element keep under positive fit, with the cap top means are provided for releasably fixing the window element. Arrangement according to claim 4, characterized that the means for releasably holding the window element are formed as cap screws, wherein portions of the screw head and / or a washer the window element in the cap-like body to back up. Arrangement according to one of the preceding claims, characterized in that the cap-like body Metal, especially stainless steel. Arrangement according to one of the preceding claims, characterized in that the cap-like body accurately and removably attached to the respective flange or neck is. Arrangement according to claim 3, characterized that the pin or grub screws penetrate the cap edge, to produce a positive connection to the sight glass flange in the assembled state, with the pin or grub screws over the cap edge circumference are arranged distributed. Arrangement according to one of the preceding claims, characterized in that in the opening or the passage absorbing window elements of different thickness or thickness can be used. Arrangement according to one of the preceding claims, characterized in that the absorbent window element is made Lead glass or the like material exists. Arrangement according to one of the preceding claims, characterized in that in the cap-like body a elastic clamping ring insert for non-positive fixing is located on the flange or nozzle.