DE503396C - Device for switching off X-ray machines - Google Patents
Device for switching off X-ray machinesInfo
- Publication number
- DE503396C DE503396C DEO16776D DEO0016776D DE503396C DE 503396 C DE503396 C DE 503396C DE O16776 D DEO16776 D DE O16776D DE O0016776 D DEO0016776 D DE O0016776D DE 503396 C DE503396 C DE 503396C
- Authority
- DE
- Germany
- Prior art keywords
- circuit
- switching
- short
- tube
- current
- 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
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/54—Protecting or lifetime prediction
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- X-Ray Techniques (AREA)
Description
Einrichtung zum Abschalten von Röntgenapparaten Es ist bekannt, bei Röntgenanlagen einen vom Röhrenstrom über einen Hilfstransformator abhängigen selbsttätigen Abschalter anzuordnen, durch den der Primärstrom ausgeschaltet wird, wenn im Röhrenstromkreis ein Kurzschlußstrom auftritt.Device for switching off X-ray machines It is known at X-ray systems have an automatic function that is dependent on the tube current via an auxiliary transformer To arrange switch by which the primary current is switched off when in the tube circuit a short-circuit current occurs.
In weiterer Ausbildung dieser Einrichtung ist gemäß der Erfindung der Hilfstransformator mit einem polarisierten Relais vereinigt, dessen Magnetspule derart im Röhrenstromkreis liegt, daß das Relais bei normalem Betrieb nicht anspricht, und dessen Arbeitskontakte die Primärspule des Hilfstransformators gewöhnlich kurzschließen.In a further development of this device is according to the invention the auxiliary transformer is united with a polarized relay, its solenoid is in such a way in the tube circuit that the relay does not respond during normal operation, and its normally open contacts usually short-circuit the primary coil of the auxiliary transformer.
Da bekanntlich die Röntgenröhre nur gleichgerichtete Halbwellenströme durchläßt, spricht das Relais bei dieser Schaltung der Magnetspule dann an, wenn entweder die Röhre überlastet wird, so daß die glühend werdende Anode selbst Elektronen aussendet und Gegenströme entstehen, oder wenn durch Berühren der beiden Spannungspole ein Kurzschlußstrom entsteht, der ja ebenfalls die dem Betriebsstrom entgegengesetzte Stromphase enthält. Durch das Ansprechen des Relais wird die Umgehungsleitung des Hilfstransformators unterbrochen, so daß dieser Strom erhält und durch seinen Sekundärstrom den Ausschalter in Tätigkeit setzt.As is well known, the X-ray tube only has rectified half-wave currents lets through, the relay responds in this circuit of the solenoid coil when either the tube is overloaded, so that the glowing anode itself electrons emits and counter currents arise, or if by touching the two voltage poles a short-circuit current arises, which is also the opposite of the operating current Contains current phase. When the relay responds, the bypass line of the Auxiliary transformer interrupted so that it receives current and through its secondary current activates the switch.
Bemerkt sei, daß man schon vorgeschlagen hat, diese Eigenschaft geeignet geschalteter polarisierter Relais, nur bei. Kurzs@chluß- bzw. Gegenströmen anzusprechen, für die Abschaltung von Röntgenanlagen zu verwenden.It should be noted that it has already been suggested that this property be suitable switched polarized relay, only with. To address short-circuit or counter-currents, to be used for switching off X-ray systems.
Die Abbildung stellt ein Ausführungsbeispiel des Erfindungsgegenstandes dar. In den Röhrenstromkreis a des Hochspannungstransformators b ist die Primärspule c des Hilfstransformators eingeschaltet, von dem der Ausschalter la abhängt. Außerdem liegt im Röhrenstromkreis die Magnetspule des polarisierten Relais d, dessen Arbeitskontakte e, f die Primärspule des Hilfstransformators gewöhnlich kurzschließen. Dieser Kurzschluß wird bei Auftreten von Kurzschluß- oder Gegenströmen durch Anziehen des Ankers e unterbrochen, so daß der Strom durch den Hilfstransformator c, ä geht, dessen Sekundärstrom mittels des Ausschalters la den Primärstrom des Haupttransformators unterbricht.The figure shows an embodiment of the subject matter of the invention. In the tube circuit a of the high-voltage transformer b, the primary coil c of the auxiliary transformer is switched on, on which the circuit breaker la depends. In addition, the magnet coil of the polarized relay d, whose normally open contacts e, f usually short-circuit the primary coil of the auxiliary transformer, is located in the tube circuit. This short-circuit is interrupted when short-circuit or countercurrents occur by attracting the armature e, so that the current goes through the auxiliary transformer c, ä, the secondary current of which interrupts the primary current of the main transformer by means of the switch la.
Die beschriebene Einrichtung macht alle Vorrichtungen entbehrlich, die die Empfindlichkeit des Ausschalters in Abhängigkeit von der induktiven oder Ohmschen Regel des Röhrenstromes beeinflussen.The device described makes all devices unnecessary, which the sensitivity of the circuit breaker depending on the inductive or Influence Ohm's rule of the tube current.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO16776D DE503396C (en) | Device for switching off X-ray machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO16776D DE503396C (en) | Device for switching off X-ray machines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE503396C true DE503396C (en) | 1930-07-21 |
Family
ID=7354265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEO16776D Expired DE503396C (en) | Device for switching off X-ray machines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE503396C (en) |
-
0
- DE DEO16776D patent/DE503396C/en not_active Expired
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