DE68726C - Electrically operated shut-off valve - Google Patents

Description

IMPERIAL J

PATENT OFFICE.

The present invention relates to a valve for pressure lines, which on electrical Ways to be operated.

The 'drawing shows the arrangement ^: the valve A, and the electrical device B for actuating the same in longitudinal section.

α is the valve housing, in which, for example, pressurized water flows in in the direction of the arrow b! while it flows out in the direction of arrow c ; ■ '■ ■■''■) [ '■;.:;■;■■■.> ^: \; Y ^: ":,: '^; : ■:, ■;' _ .. [■■ , ■ f Ί The valve consists of the valve disc d sealed by a leather or rubber plate and the piston e ^and Ζ · .. "connected to it. ■■: · "' ^: '. '?: ^''■' ■■ ■; '"' ■ '■■''; / ■■, - ■ ;::

The piston e has a smaller diameter than the piston /. ' The latter moves in a housing g, which is closed at the front end by a cover / 1. When the valve is opened, the pistons e and f move to the right, while when the valve is closed, they move in the opposite direction. The space i in front of the piston e is provided with a drainage pipe k in order to discharge the water penetrating through the seals of the pistons / and e , so that the space i is always at atmospheric pressure. The space g is connected to the pipe m by a pipe Z, which is connected to the pressure line at η.

In the lower part of the tube m, below the mouth of the tube /, there is a valve seat 0 and at some distance above it a second valve seat 0 ¹ .

The latter is elongated upwards and consists of soft iron and fills the upper part of the tube m except for a fine through-flow opening. _;

An iron rod q with conically pointed ends of a smaller diameter than the inside diameter of the tube m is inserted between the two valve seats. ;. 0 ■

The upper and lower tip of this iron rod wear small brass cone which are eingeschlitfen in the narrow Durchlafsöffnungen deiVentilsitze 0 and o ^l. ΛΪ

Here, for example, the iron rod q sits on the lower valve seat 0 , thus closing the lower opening of the tube m, namely just below the mouth of the tube / into the tube m. The tube m is surrounded by a wire spiral 5 in such a way that when a current is passed through them, the iron rod is raised and q o geprefst ^l on the valve seat, so dafs'also.das'Rohr "tnaehl is finished out above. . -

; The wire spiral is closed at the top and bottom by two disks t f ¹ made of soft iron and the whole is enclosed by a tube r also made of soft iron.
- :: -. '■ The effect of the valve is as follows:

Assuming that the shut-off valve A is closed, the parts of it are in the position indicated in the drawing. "In the electrical device B for actuating the valve are the

Claims (1)

individual Thcile likewise in the position shown, ie the upper Theildes tube wi communicates with the, pressure line in connection, and the ^ water pressure calledst and passes through the narrow bore of the valve seat o ¹ therethrough, the quantity of iron rod q umspülend, through the tube / in the space g in front of the coupling ■ /, -... which is therefore under the full pressure prevailing in the pressure line. Since the piston / has a larger diameter than the valve plate d, the shut-off valve will remain closed as long as the piston / is under the pressure mentioned. . , ' Will be an opening of the valve A, thus lifting the disc d from its seat is intended, is with ^ iülfe any contact device, an electric current through the tube m surrounding wire spiral $ conducted, whereby the iron rod q ο lifted off the lower valve seat and on the upper valve seat o ^! is repressed. A connection is thus established between the lower part of tube I, the outlet end, with tube g in front of the piston /. In front of the piston /, since the space there is connected to the water outlet, there is atmospheric pressure, so that the water flowing in from the pressure line in the direction of arrow b moves the valve plate d and the piston e and / to the right causes, and thus an opening of the valve takes place. When moving the piston / to the right, the water in front of it is drained through the pipe / into the discharge end of the pipe m. If the valve A, which is opened in this way, is to be closed again, it is only necessary to interrupt the current which has been passed through the wire spiral s mentioned above. At this moment the pressurized water in the upper part of the pipe m acts on the iron rod q, which, after the electrical current has been interrupted, is pressed onto the lower valve seat 6. The pressurized water then penetrates through the pipe / back into the space g in front of the piston / and, due to the larger diameter of this piston, causes it to move to the left and thereby close the shut-off valve d. - The whole handling of the shut-off valve A consists only in opening and closing an electric current by means of a contact device. i / V ■ "■"'■ The openings in the valve seats o? and ο are to be selected very small, so that when the pressure in the pressure pipe is high, a current that is too strong is not required to lift the iron rod q off the valve seat ο and ■ ^{press it onto the valve seat o 1} and thus keep the flow opening in this valve seat closed to be able to. The two disks closing off the wire spiral at the top and bottom and the tube surrounding the wire spiral are made of soft iron, so that the magnetic lines of force find an almost completely closed circle in the iron, which is only interrupted by the small space between the iron core q and the valve seat o ¹ is. In this way, with a relatively small current in the wire spiral, a very powerful effect is exerted on the iron core q. Pat ε ν τ - A ν s ρ R υ c η: An electrical device for operating a shut-off valve with a differential piston, in which opening takes place by relieving the load on the large piston and closing takes place by loading it, characterized by a pipe m passed through a wire spiral with valve seats o and o ¹ and an iron rod q provided with closing cones in between , the pipe m being connected to the pressure line at the top, and the space between the valve seats ο and o ^{1 being} in communication with the space in front of the large piston of the above shut-off valve, the device thus characterized acting in such a way that by closing an electrical Current the iron rod q is pressed onto the seat ο ¹ and then allows the pressurized water acting on the large piston to run off, thereby relieving it, while by interrupting the mentioned current the iron rod falls back onto the lower seat ο and is pressed on by the penetrating pressurized water, which let then penetrates into the space in front of the large piston and places a load on it. ■ Λ 'ι For this purpose ι sheet of drawings.