CH660065A5

CH660065A5 - SAFETY SHUT-OFF DEVICE FOR PIPELINES.

Info

Publication number: CH660065A5
Application number: CH103383A
Authority: CH
Inventors: Fritz Hurter
Original assignee: Fischer Ag Georg
Priority date: 1983-02-24
Filing date: 1983-02-24
Publication date: 1987-03-13
Also published as: DE3404409A1

Description

Die Erfindung betrifft eine Sicherheits-Absperreinrich- 45 Schraubenbefestigung 18 in einer im Leitungsteil 4 angeord-tung, wie sie im Oberbegriff von Anspruch 1 gekennzeichnet neten Halterung 19 befestigt und weist eine durch eine ringist. förmige Rille gebildete Sollbruchstelle 20 auf. The invention relates to a safety shut-off device 45 screw fastening 18 in a device 4 arranged in the line part 4, as is fastened in the preamble of claim 1, and has one by a ringist. shaped groove formed predetermined breaking point 20.

Bei Gas- und Wasser-Hausanschlussleitungen entstehen Der Bolzen 16 ist zusätzlich in einem im Leitungsteil 9 In the case of gas and water house connection lines, the bolt 16 is also in one in the line part 9

oft durch Erdverschiebungen oder Baggereinwirkungen Ver- angeordneten Lagerstück 23 verschiebbar geführt, wobei das Schiebungen bzw. Verlagerungen, Beschädigungen oder 50 Lagerstück 23 gleichzeitig eine Abstützung für die Feder 17 andere Veränderungen an den Rohrleitungen oder deren bildet. Das Leitungsteil 9 weist am inneren erweiterten Verankerungen. Oft sind derartige, unter der Erde vor sich Umfang eine Anlagefläche 10 und gegenüberliegend eine gehende Veränderungen nicht sofort ersichtlich, bzw. sie konische Dichtfläche 21 auf. often arranged by means of earth displacements or excavator actions, the bearing piece 23 is displaceably guided, the sliding or displacements, damage or bearing piece 23 simultaneously forming a support for the spring 17 other changes to the pipelines or theirs. The line part 9 has anchored on the inside. Often, such a sub-surface 10 in front of the circumference in front of you and a going change opposite are not immediately apparent, or they have a conical sealing surface 21.

gehen sehr langsam vor sich, wie das z.B. bei Bergbausen- T , v „.. , .. , happen very slowly, like that e.g. at Bergbausen- T, v „.., ..,

? ,. & . 0 Im normalen Einbauzustand liegt die Ruckseite 22 des le en voro^lm" . 55 Ventiltellers 15 entweder ander Anlagefläche 10 an, oder es ? ,. &. 0 In the normal installation state, the rear side 22 of the le en voro ^ lm ". 55 valve plate 15 either rests against the contact surface 10 or it

Es ist zwar eine Sicherheits-Armatur fur Hausanschlusslei- . . , ,. . . * . . ,r ' , It is a safety fitting for house connection lines. . ,,. . . *. . "r"

, , , j . , , , , . ist eine definierte Distanz zwischen diesen beiden Flachen tungen bekanntgeworden, mittels welcher bei Verschie- , ,,, j. ,,,,. a defined distance between these two surfaces has become known, by means of which different

vorgesehen bungen der Rohrleitung deren Absperrung erreicht wird. 6 provided exercises of the pipeline whose shutdown is reached. 6

Deren Absperrorgan schliesst aber erst, wenn die Rohrlei- Entsteht nun durch eine äussere Einwirkung eine Zugkraft tung durch äussere Einwirkung sich relativ weit verschoben 60 auf die Rohrleitung 2, welche grösser ist als die in der hat. Bei grossen Krafteinwirkungen ohne grosse Verschiebe- Klemmverbindung vorhandene Reibungskraft, wird das Lei-wege besteht die Gefahr, dass die Rohrleitung bis zu einem tungsteil 9 aus der Rohrverbindung 3 gezogen. Hierdurch Bruch beschädigt wird, ohne dass die Sicherheitsarmatur entsteht durch die Wirkung der Anlagefläche 10 auf den Ven-schliesst. Sie bietet deshalb nur einen ungenügenden Schutz tilteller 15 entweder sofort oder erst nach Überwindung der z.B. gegen das Entweichen von Gas und dadurch entstehende 65 eventuell vorhandenen bestimmbaren Distanz eine Zugkraft Explosionen. auf den Bolzen 16. Wird die Bruchfestigkeit in der Sollbruch- Their shut-off device only closes when the pipe line arises from an external influence, a tensile force caused by external influence is shifted relatively far 60 on the pipe 2, which is larger than that in the. In the case of large force effects without a large displacement clamping connection, there is a risk that the pipeline is pulled out of the pipe connection 3 up to a part 9. As a result, breakage is damaged without the safety fitting being created by the action of the contact surface 10 on the valve. It therefore offers only insufficient protection tilteller 15 either immediately or only after the e.g. against the escape of gas and the resultant 65 possibly determinable distance, a tensile force explosions. on the bolt 16. Is the breaking strength in the predetermined breaking

Aufgabe der vorliegenden Erfindung ist die Schaffung stelle durch die Zugkraft überschritten, erfolgt, wie in Fig. 2 The object of the present invention is to create the point exceeded by the tensile force, as in FIG. 2

einer Sicherheits-Absperreinrichtung der eingangs ersichtlich, ein Bruch des Bolzens 16, wodurch der Ventil- a safety shut-off device that can be seen at the beginning, a break in the bolt 16, as a result of which the valve

660065 660065

teller 15 durch die Kraft der vorgespannten Fieder 17 zur Anlage an die Dichtfläche 21 gebracht wird. Somit erfolgt ein sofortiges Absperren der Rohrleitung 2, sobald die äussere Krafteinwirkung auf die Rohrleitung einen durch den Querbaren Wert übersteigt. plate 15 is brought into contact with the sealing surface 21 by the force of the prestressed leaflet 17. Thus, the pipeline 2 is immediately shut off as soon as the external force on the pipeline exceeds a value that can be traversed.

Auch wenn die zylindrische Partie 8 der Rohrleitung 2 ganz aus der Rohrverbindung 3 herausgezogen wird, bleibt die Zufuhr des Mediums durch das geschlossene Absperrschnitt der Sollbruchstelle gegebenen und dadurch bestimm- s organ 12 gesperrt. Even if the cylindrical part 8 of the pipeline 2 is pulled completely out of the pipe connection 3, the supply of the medium remains given by the closed cut-off cut of the predetermined breaking point and thereby a certain organ 12.

B B

1 Blatt Zeichnungen 1 sheet of drawings

Claims

660065 2 PATENT CLAIMS mentioned, which if one of the

1. Safety shut-off device for a medium guiding supply pipe acting external force ensures immediate rende pipelines, in particular for a house entry shutting off the pipeline.

in the case of gas or water pipes, characterized in that, according to the invention, this is solved by the characterizing features of claim 1 on a pipe connection (3) of two pipe parts (4, 9).

a predetermined breaking point (20) and by spring pressure Further advantageous embodiments are arranged by the closable shut-off device (12). other claims marked.

2. Device according to claim 1, characterized. The invention is shown in the accompanying drawings that the pipe connection (3) with an axial adjustment and described below. Show it :

pushability of the connected pipeline parts (4,9) can be seen, which in a Fig. 1 acting on the pipeline (2) a safety shut-off device arises partly in tractive force. Longitudinal section, and

3. Device according to claim 1 or 2, characterized in Fig. 2 shows the safety shut-off device according to Fig. 1 at that the pipe connection (3) as a clamping connection closed shut-off device.

is trained. 15

4. Device according to one of claims 1 to 3, characterized on a pipe 2 e.g. of a gas or water pipe, characterized in that a support network is a safety shut-off device (19) for the shut-off device (12) and in the other line, which holds a pipe connection 3 to the connection part ( 9) a sealing surface (21) for the shut-off element (12) of a line part 4, for example has a house entry 4, and one with axial displacement of the line parts (4, 9) 20. The pipe connection 3 is designed as a frictionally acting contact surface (10) acting on the shut-off element (12), which is arranged when exceeded. an axial displacement of a tensile force acting on the pipes

5. Device according to one of claims 1 to 4, characterized exercise of the tube parts 2 and 4 from each other, characterized in that the shut-off element (12) one in the shark. The clamping connection has a clamping ring 5, terung (19) attached and with the The predetermined breaking point (20), which has a collar nut 6 against a conical rear bolt (16). Surface 7 of the line part 4 is pressed.

6. Device according to one of claims 1 to 5, characterized by the resulting radial tension that the shut-off device (12) as a clamping ring 5 creates a frictional connection frustoconical sealing surface (13) having valve- between the line part 4 and one cylindrical portion 8 plate (15) is formed. 30 of a line part 9 of the pipeline 2.

7. Device according to one of claims 5 or 6, other types of pipe connection can also be used, characterized in that on the with the sealing surface such as. Those that are form-fitting, but at (21) provided line part (9) a bearing piece (23) for exceeding a certain tensile force is arranged without breaking bolts (16), which deform at the same time for support such that pulling apart tongue of a biased spring (17) is formed. 35 lines in the connection is guaranteed.

8. Device according to one of claims 6 or 7, The line part 9 is welded to the pipe 2, characterized in that at one end of the center and two parts, the two parts 9a and 9b arranged to the longitudinal axis of the line parts (9,4) Bolzens e.g. are connected by means of a shell coupling 11, (16) the valve plate (15) and at the other end a screw, whereby a shut-off fastening (18) arranged in this line part 9 is arranged. 40 organ 12 can be assembled.

The shut-off device 12 consists of a valve disc 15 having a conical sealing surface 13 with a seal 14, a bolt 16 and a prestressed spring 17. The bolt 16 is centered on the pipeline by means of a