DE2810579A1 - Hydraulic pipe breakage protection equipment - has hydraulically released non-return valve between pipe and protected item - Google Patents

Hydraulic pipe breakage protection equipment - has hydraulically released non-return valve between pipe and protected item

Info

Publication number
DE2810579A1
DE2810579A1 DE19782810579 DE2810579A DE2810579A1 DE 2810579 A1 DE2810579 A1 DE 2810579A1 DE 19782810579 DE19782810579 DE 19782810579 DE 2810579 A DE2810579 A DE 2810579A DE 2810579 A1 DE2810579 A1 DE 2810579A1
Authority
DE
Germany
Prior art keywords
pipe
valve
return valve
protection equipment
breakage protection
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.)
Withdrawn
Application number
DE19782810579
Other languages
German (de)
Inventor
Gerd Dr Ing Scheffel
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.)
Schwelm & Towler Hydraulics
Original Assignee
Schwelm & Towler Hydraulics
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 Schwelm & Towler Hydraulics filed Critical Schwelm & Towler Hydraulics
Priority to DE19782810579 priority Critical patent/DE2810579A1/en
Publication of DE2810579A1 publication Critical patent/DE2810579A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/003—Systems with load-holding valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The pipe breakage protection equipment is for a permanently pressurised hydraulic system, e.g. a lifting ram connected to a pressure source. Anhydraulically-released non-return valve (5) is set between the device to be protected (3) and the pipe (4), which precedes it. There is a tapping (6) before the valve connected to the latter, to provide the release pressure.

Description

Leitungsbruchsicherung Line break protection

Die Erfindung betrifft eine Leitungsbruchsicherung für ein dauernd unter Druck stehendes hydraulisches System.The invention relates to a line break safety device for a permanent hydraulic system under pressure.

Alle bisherigen Leitungsbruchsicherungen erfordern aufwendige Sonderkonstruktionen derart unterschiedlicher Bauarten, daß diese nicht einmal in ihren Grundzügen beschrieben werden können.All previous line break protection devices require complex special designs so different designs that they are not even described in their basic features can be.

Die Aufgabe der Erfindung besteht deshalb darin, eine einfache Leitungsbruchsicherung für dauernd unter Druck stehende Systeme unter Benutzung handelsüblicher Bauelemente zu schaffen.The object of the invention is therefore to provide a simple line break protection device for systems that are constantly under pressure using commercially available components to accomplish.

Dies erfogt erfindungsgemäß für ein dauernd unter Druck stehendes hydraulisches System, zum Beispiel, einen Hubzylinder der mit einer Druckmittelquelle verbunden ist, durch ein hydraulisch entsperrbares Rückschlagventil zwischen dem zu sichernden Bauteil und der Rohrleitung Dabei ist die Rohrleitung in gesperrter Durchflußrichtung hinter dem Ventil angeordnet. Der zur hydraulischen Entsperrung des Ventils erforderliche Entsperrdruck wird unmittelbar hinter dem Ventil durch einen Abgriff aus der Rohrleitung bezogen.According to the invention, this is done for a device that is permanently under pressure hydraulic system, for example, a lifting cylinder with a pressure medium source is connected by a hydraulically releasable check valve between the The component to be secured and the pipeline. The pipeline is locked Direction of flow behind the Valve arranged. The one to the hydraulic Unlocking the valve required unlocking pressure is immediately behind the Valve obtained from the pipeline through a tap.

Bei einem Leitungsbruch sperrt sich das Ventil in Durchflußrichtung zur Rohrleitung selbst ab weil der Entsperrdruck fehlt. Da dieser nämlich aus der zu sichernden Leitung bezogen wird und bei einem Rohrbruch schlagartig absinkt, schließt das Ventil den freien Durchfluß in Richtung der zu sichernden Leitung hin ebensoschnell ab.In the event of a line break, the valve blocks in the direction of flow to the pipeline itself because the release pressure is missing. Since this is from the the pipeline to be secured is obtained and drops suddenly in the event of a pipe break, the valve closes the free flow in the direction of the line to be secured just as quickly.

Ein erfindungsgemäßes Ausführungsbeispiel ist in der Abbildung dargestellt.An exemplary embodiment according to the invention is shown in the figure.

Das vereinfacht dargestellt hydraulische System besteht aus einer Pumpe 1 mit einem Reservoir 2 und einem Hubzylinder 3. Pumpe 1 und Zylinder 3 sind durch eine Rohrleitung 4 miteinander verbunden, die hier die zu sichernde Leitung darstellt.The simplified hydraulic system consists of one Pump 1 with a reservoir 2 and a lift cylinder 3. Pump 1 and cylinder 3 are Connected to one another by a pipeline 4, which here is the line to be secured represents.

Am Ende dieser Leitung 4 befindet sich ein hydraulisch entsperrbares Rückschlagventil 5. Hinter diesem Ventil 5 ist ein Abgriff 6, der die Verbindung mit diesem herstellt. Auf diese Weise bezieht das Ventil 5 den Entsperrdruck direkt aus der zu sichernden Leitung.At the end of this line 4 there is a hydraulically unlockable one Check valve 5. Behind this valve 5 is a tap 6 that makes the connection with this manufactures. In this way, the valve 5 receives the unlocking pressure directly from the line to be secured.

L e e r s e i t eL e r s e i t e

Claims (1)

P a t e n t a n s p r u c h Leitungsbruchsicherung für ein dauernd unter Druck stehendes hydraulisches System, zum Beispiel, einen Hubzylinder, der mit einer Druckmittelquelle verbunden ist, gekennzeichnet durch ein hydraulisch entsperrbares Rückschlagventil zwischen dem zu sichernden Bauteil und der Rohrleitung, wobei diese in gesperrter Durchflußrichtung hinter dem Ventil angeordnet ist, und mit einem Abgriff hinter dem Ventil, der die Verbindung mit diesem herstellt um den Entsperrdruck aus der zu sichernden Leitung zu beziehen.P a t e n t a n s p r u c h line break protection for a permanent pressurized hydraulic system, for example, a lift cylinder that is connected to a pressure medium source, characterized by a hydraulic unlockable check valve between the component to be secured and the pipeline, this being arranged in the blocked flow direction behind the valve, and with a tap behind the valve that connects to it to obtain the release pressure from the line to be secured.
DE19782810579 1978-03-11 1978-03-11 Hydraulic pipe breakage protection equipment - has hydraulically released non-return valve between pipe and protected item Withdrawn DE2810579A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782810579 DE2810579A1 (en) 1978-03-11 1978-03-11 Hydraulic pipe breakage protection equipment - has hydraulically released non-return valve between pipe and protected item

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782810579 DE2810579A1 (en) 1978-03-11 1978-03-11 Hydraulic pipe breakage protection equipment - has hydraulically released non-return valve between pipe and protected item

Publications (1)

Publication Number Publication Date
DE2810579A1 true DE2810579A1 (en) 1979-09-20

Family

ID=6034133

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782810579 Withdrawn DE2810579A1 (en) 1978-03-11 1978-03-11 Hydraulic pipe breakage protection equipment - has hydraulically released non-return valve between pipe and protected item

Country Status (1)

Country Link
DE (1) DE2810579A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028748A2 (en) * 1979-10-26 1981-05-20 Otto Nussbaum GmbH & Co. KG Hydraulic lifting platform

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028748A2 (en) * 1979-10-26 1981-05-20 Otto Nussbaum GmbH & Co. KG Hydraulic lifting platform
EP0028748A3 (en) * 1979-10-26 1981-05-27 Otto Nussbaum GmbH & Co. KG Hydraulic lifting platform

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Legal Events

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8139 Disposal/non-payment of the annual fee