53results about How to "Relieve water pressure" patented technology

The invention discloses an anti-water hammer stop valve, which comprises a valve body. The two ends of the valve body are respectively provided with a water inlet and a water outlet. The water inlet and the water outlet are connected through the inner cavity of the valve body. There is a communication port between the inner cavity of the valve body, a valve cover is provided at the upper end of the valve body, a valve stem is provided on the valve cover, the upper end of the valve stem is connected with the hand wheel, and the lower end passes through the valve cover and extends To the inner cavity of the valve, a valve disc is provided at the lower end of the valve stem, and an anti-water hammer device is provided between the valve body and the valve disc, wherein the valve disc is a hollow structure, and its inner cavity is composed of a sliding hole and an inlet Water hole structure; the anti-water hammer device includes an anti-water hammer sliding piece and a compression spring, the anti-water hammer sliding piece is arranged in the sliding hole, one end of the compression spring acts on the bottom of the valve stem, and the other end acts on the bottom of the valve stem. On the top of the anti-water hammer sliding part; the compression spring has a pre-compression amount, and always keeps the anti-water hammer sliding part close to the water inlet hole. The globe valve has the function of anti-water hammer.

A water injection system positioned about a combustor of a gas turbine engine. The water injection system may include a water manifold and a pressure relief system in communication with the water manifold. The pressure relief system may include a relief vent positioned on a pressure relief line.

The invention discloses an explosion-proof type magnetic valve for a mine, belonging to the field of magnetic valve and comprising an explosion-proof shell and the like, wherein the upper end and the lower end of the explosion-proof shell are connected with a pressure pad and an explosion-proof cover, the inner cavity of the explosion-proof shell is provided with a non-magnetic tube which passes through a solenoid coil, the lower part of the non-magnetic tube is provided with a movable iron core, the non-magnetic tube and the movable iron core pass through the explosion-proof cover of which the lower end is provided with a valve body, the left end and the right end of the valve body are respectively provided with a water inlet and a water outlet, a piston is arranged between the water inlet and the water outlet of the valve body, and a compression spring is arranged between the upper part of the inner cavity of the valve body and the piston. The invention utilizes the air pressure difference generated by the upper surface and the lower surface of the piston to push the piston to alleviate opening and closing movement; because of being made of stainless material, the piston bears large water pressure; because the inner cavity of the lower valve body limits the piston, the piston has favorable centring property and accurate closing and opening position; and because a sealed pad is arranged between the piston and the inner cavity of the lower valve body, the piston does not directly rub with the inner cavity of the lower valve body, thereby prolonging the service life of the magnetic valve.

The invention belongs to the technical field of river flood-fighting control tools, and particularly relates to a river flood-fighting control structure. The river flood-fighting control structure comprises a dam body, wherein the dam body consists of a plurality of flow division passages; a plurality of partition plates are arranged in the flow division passages; the flow division passages are divided into a plurality of tributary passages by the partition plates; a plurality of nicks are formed in the sidewalls of the tributary passages; the nicks in the same tributary passage are distributed to form a horizontal line; the nicks in different tributary passages are distributed to form oblique lines; the horizontal lines form included angles of 15 to 60 degrees with the oblique lines; through holes penetrating through the adjacent tributary passages are formed in the partition plates. The river flood-fighting control structure has the beneficial effects that silt and foreign materials can be well cleaned, larger foreign materials can be removed, and the river flood-fighting control structure is difficult to block.