Non-linear adjusting water filling valve
A water filling valve, non-linear technology, applied in the direction of valve lift, valve details, valve device, etc., can solve the problem that the flow adjustment accuracy of water filling valve is difficult to control accurately, the reliability of water filling test cannot be guaranteed, and the opening and closing control of hoist Low precision and other problems, to achieve the effect of improving water filling efficiency, increasing design space, and strong applicability
Pending Publication Date: 2022-04-01
POWERCHINA ZHONGNAN ENG
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Problems solved by technology
[0004] The relative opening of the grille or bar-shaped groove of the above-mentioned water filling valve changes linearly, that is, the passing flow rate changes linearly. The combined control accuracy is low, and the hoist is flexibly connected to the water filling valve through a steel wire rope, and the control accuracy is further reduced. These reasons make it difficult to accurately control the overall flow adjustment accuracy of this type of water filling valve, and thus cannot guarantee the reliability of the water filling test. sex
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[0032] In order to better understand the purpose, structure and function of the present invention, a nonlinear regulating water filling valve of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0033] like image 3 , Figure 4 As shown, the non-linear water filling valve of the present embodiment is used to install the water conservancy and hydropower project gate leaf structure 14 of the water filling valve device, which includes a valve body 1, a valve core 2 and a valve cover 3, and the valve core 2 The top is fixed on the lower surface of the valve cover 3, and the valve body 1 has a valve chamber 101 that is slidingly fitted with the valve core 2; the top of the valve body 1 has a valve seat 4, and the valve seat 4 is provided with a The shape and size of the opening of the valve seat 4 are the same as those of the valve cavity 101 ; the valve cover 3 is used to cover the opening arranged on the valve seat 4...
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A valve body of the water filling valve is provided with a valve cavity in sliding fit with a valve element, a valve seat is arranged at the top of the valve body, an opening communicated with the valve cavity is formed in the valve seat, a valve deck is used for covering the opening formed in the valve seat in a sealing mode, and the valve deck is connected with a hoist through a first valve rod; the valve element comprises a second valve rod fixedly connected with the valve deck, a second guiding piece arranged at the lower end of the second valve rod in a sleeving mode and flow adjusting pieces sequentially arranged on the second valve rod between the valve deck and the second guiding piece in a sleeving mode at intervals. A plurality of second through holes are formed in each flow adjusting piece, and the sum of the areas of the second through holes in the flow adjusting pieces far away from the valve deck is larger than the sum of the areas of the second through holes in the flow adjusting pieces close to the valve deck. The device is convenient to disassemble, can perform nonlinear adjustment on the water filling flow, avoids the problem that the flow adjustment precision of the water filling valve is difficult to accurately control due to low control precision of the hoist and flexible connection of the hoist and the water filling valve, and ensures that the water filling test is safe and reliable.
Description
technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and in particular relates to a non-linear regulating water filling valve. Background technique [0002] For water conservancy and hydropower projects, especially pumped storage projects, after the construction is completed, it is necessary to conduct the first water filling test on the diversion channel. In the water filling test, the water filling valve arranged on the gate is often used to adjust the required flow. After the water filling test is completed, in the normal operation of the power station, the water filling valve of the gate does not need to adjust the water filling flow, but only needs to be opened and closed normally. [0003] In order to meet the requirement of adjusting the water filling flow, the water filling valve in the existing project adopts a grid type or a strip groove type valve core in the flow adjustment mode, and the valve core ...
Claims
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IPC IPC(8): F16K1/00F16K1/32F16K1/36F16K1/54F16K27/02F16K27/08F16K47/02
Inventor 周华蒋立新徐永新
Owner POWERCHINA ZHONGNAN ENG