DE588274C - Device for the protection of X-ray systems - Google Patents

Device for the protection of X-ray systems

Info

Publication number
DE588274C
DE588274C DE1930588274D DE588274DD DE588274C DE 588274 C DE588274 C DE 588274C DE 1930588274 D DE1930588274 D DE 1930588274D DE 588274D D DE588274D D DE 588274DD DE 588274 C DE588274 C DE 588274C
Authority
DE
Germany
Prior art keywords
exposure
clock
exposure clock
time
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE1930588274D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of DE588274C publication Critical patent/DE588274C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05GX-RAY TECHNIQUE
    • H05G1/00X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08Electrical details
    • H05G1/26Measuring, controlling or protecting
    • H05G1/30Controlling
    • H05G1/38Exposure time
    • H05G1/40Exposure time using adjustable time-switch

Description

Bei Röntgenaufnahmen wird die Hochspannung im allgemeinen in der Weise geschaltet, daß eine Belichtungsuhr den Primärkreis des Hochspannungstransformators über ein Schütz schließt und nach Ablauf der eingestellten Belichtungszeit automatisch unterbricht. Bei wohl allen bisher vorhandenen Belichtungsuhren besteht die Gefahr, daß die Uhr beim Ausschalten versagt oder daß zum mindestenIn the case of x-rays, the high voltage is generally switched in such a way that that an exposure clock connects the primary circuit of the high voltage transformer via a contactor closes and automatically interrupts after the set exposure time has elapsed. at all exposure clocks that have existed up to now run the risk that the clock at Switching off fails, or at least that

ίο bei kurzen Belichtungszeiten eine Schaltverzögerung eintritt, die zur Überlastung der Röntgenröhre führen kann. Der dadurch entstehende Schaden ist beträchtlich, zumal wenn Röhren mit drehender Anode Verwendung finden. Das Streben nach äußerster Verkürzung der Schaltzeiten bei erhöhter Röhrenbelastung macht eine zuverlässige Sicherung gegen eine derartige Zerstörungsgefahr der Röntgenröhren unbedingt -erforderlich.ίο with short exposure times a switching delay occurs which can lead to overloading of the X-ray tube. The resulting damage is considerable, especially when tubes with rotating anodes are used. The pursuit of extreme shortening of the switching times with increased tube loading makes reliable protection against such a risk of destruction of the X-ray tubes absolutely necessary.

/ Gegenstand der Erfindung ist eine einfache Einrichtung zur Beseitigung dieser Überbelastungsgefahr durch Einbau einer gleichzeitig mit der Belichtungsuhr ausgelösten Zeitschalteinrichtung in den Schalttisch des Röntgenapparates, die für jede Röhrenbelastung so eingestellt werden kann, daß sie unabhängig von der Belichtungsuhr den Primärkreis des Hochspannungstransformators unterbricht, sobald die zeitliche Belastungsgrenze der Röntgenröhre erreicht ist./ The invention relates to a simple device for eliminating this risk of overloading by installing a timer that is triggered at the same time as the exposure clock in the indexing table of the X-ray apparatus that can be adjusted for each tube load so that it the primary circuit of the high-voltage transformer independent of the exposure clock interrupts as soon as the time limit of the X-ray tube is reached.

Der Zeitschalter kann die gleiche Ausführung wie die Belichtungsuhr besitzen, aber auch wesentlich.einfacher gebaut sein. Zweckmäßig werden die Arbeitskontakte beider Belichtungsuhren in Reihe geschaltet. Es genügt vollkommen, wenn die als Sicherheitsschalter dienende Belichtungsuhr nur wenige einstellbare Zeitstufen besitzt.The timer can have the same design as the exposure clock, but also be built much simpler. The working contacts of both exposure clocks are useful connected in series. It is completely sufficient if they are used as a safety switch serving exposure clock has only a few adjustable time levels.

Claims (3)

Patentansprüche:Patent claims: 1. Einrichtung zum Schutz von Röntgenanlagen, bei denen der Röhrenstrom durch eine Belichtungsuhr gesteuert wird, dadurch gekennzeichnet, daß neben der Belichtungsdauer eine weitere, von der Zeit abhängige Schalteinrichtung vorgesehen ist, die gleichzeitig mit der Belichtungsuhr ausgelöst und so eingestellt wird, daß sie beim Versagen der Belichtungsuhr den Primärkreis des Hochspannungstransformators unterbricht, sobald die bei der vorgesehenen Belastung der Röhre ohne Schädigung der Röhre mögliche Betriebsdauer erreicht ist. '1. Equipment for the protection of X-ray systems, in which the tube current is controlled by an exposure clock, characterized in that in addition to the Exposure time a further, time-dependent switching device is provided which is triggered at the same time as the exposure clock and is set so that it is triggered if the exposure clock fails the primary circuit of the high-voltage transformer is interrupted as soon as the tube is subjected to the intended load possible service life has been reached without damaging the tube. ' 2. Röntgeneinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß als Schalteinrichtung eine zweite Belichtungsuhr gewählt ist, die mit der ersten gleichzeitig erregt wird, und daß die Arbeitskontakte beider Belichtungsuhren in Serie liegen.2. X-ray device according to claim 1, characterized in that the switching device a second exposure clock is selected, which is excited at the same time as the first, and that the normally open contacts both exposure clocks are in series. 3. Röntgeneinrichtung nachAnspruch2, dadurch gekennzeichnet, daß die ■ als Sicherheitsschalter dienende Belichtungsuhr nur wenige einstellbare Zeitstufen be- sitzt.3. X-ray device nachAnspruch2, characterized in that the ■ as The exposure clock used by the safety switch only operates a few adjustable time steps sits.
DE1930588274D 1930-06-15 1930-06-15 Device for the protection of X-ray systems Expired DE588274C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE588274T 1930-06-15

Publications (1)

Publication Number Publication Date
DE588274C true DE588274C (en) 1933-11-15

Family

ID=6572353

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930588274D Expired DE588274C (en) 1930-06-15 1930-06-15 Device for the protection of X-ray systems

Country Status (1)

Country Link
DE (1) DE588274C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011095635A1 (en) 2010-02-08 2011-08-11 Robert Bosch Gmbh Novel circuit and method for communicating via a single line

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011095635A1 (en) 2010-02-08 2011-08-11 Robert Bosch Gmbh Novel circuit and method for communicating via a single line
US9170967B2 (en) 2010-02-08 2015-10-27 Robert Bosch Gmbh System and method for transmitting information from a transmitter to a receiver via a single line

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