Lever piston bucket type high pressure steam drainage valve
A high-pressure steam, bucket-type technology, applied in steam traps, mechanical equipment, etc., can solve the problem that lever-piston bucket-type steam traps cannot operate normally, eliminate air blockage and steam lock, and reduce steam leakage loss. , the effect of low noise
Inactive Publication Date: 2008-09-17
GANSU HONGFENG MASCH CO LTD
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is: to overcome the deficiency that the existing lever-piston bucket-type steam trap cannot operate normally under high temperature and high pressure, and to provide a double-seat cut-off type with a large working range and good stability and reliability. A lever-piston bucket-type high-pressure steam trap with automatic centering, automatic valve closing and fixed fulcrum
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[0019] exist figure 1 , 2 , 3, 4, 5: a toothed gasket 10 is installed between the valve body 1 and the valve cover 11, and is fastened by equal-length double-ended studs 6 and nuts 7. The strength condition of valve body 1 and bonnet 11 is high pressure PN420 (CL2500), and 15CrlMoV forgings are used to meet the safe use requirements of steam traps at high temperature 550°C and high pressure (maximum working pressure 190MPa·G). The wall thickness and pressure rating of the valve body 1 conform to the provisions of GB / T12224-2005 "General Requirements for Steel Valves", and are connected by socket welding. The small valve cover 24 and the valve cover 11 are welded after being threaded. The small valve cover 24 is a stepped through cavity, and the outer diameter of the lower end is uniformly distributed with small holes 41, and communicates with the inner cavity. One end of the small valve cover 24 is threaded to connect the main valve seat 25, and the other end of the cavity i...
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The invention relates to a lever piston bucket high pressure steam trap valve, which comprises a valve body and a valve cover, and is characterized in that service fluid enters horizontally from an inlet hole (35) on the side of the lower part of the valve body and is drained from the upper part of the valve cover in a vertical direction, a main valve seat (25), a small valve cover (24), a valve cover (11), and a mounting bracket (19) are connected through threads, a main valve plug (23) is arranged in the inner cavity of the mounting bracket (19), the inner cavity of the main valve plug (23) is provided with a secondary valve plug (26), a valve guide (27) and a guide cap (28), a secondary valve joint pin (17) is connected with the guide cap (28) through an elastic cylindrical pin (29), and a fixed-support lever (16), a connection plate (34) and a bucket (5) are also connected through threads. The lever piston bucket high pressure steam trap valve has the advantages of small steam leakage loss, rate of load steam loss less than 2%, and high rate of back pressure more than 90%, and can drain condensed water in time, and be favorable for recycling the condensed water. Steaming holes (37) are designed at the bottom of the bucket, thereby eliminating air block-up and steam vapor lock so as to have the advantages of sensitive and reliable action, little noise and long service life.
Description
technical field [0001] The invention relates to a high-pressure steam trap, more specifically to a lever-piston bucket-type high-pressure steam trap capable of automatically blocking steam and draining high-pressure steam transmission lines and indirect heating equipment and recovering condensed water by utilizing the back pressure of the trap. Background technique [0002] At present, the known lever-piston bucket-type steam trap has a nominal pressure of PN160, a maximum allowable temperature of TMA427°C, and a maximum displacement of less than 5000Kg / h, which cannot meet the technical requirements for the selection of high-temperature and high-pressure steam traps for projects such as 1 million tons / year of ethylene. Contents of the invention [0003] The technical problem to be solved by the present invention is: to overcome the deficiency that the existing lever-piston bucket-type steam trap cannot operate normally under high temperature and high pressure, and to provi...
Claims
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IPC IPC(8): F16T1/24
Inventor 刘金海
Owner GANSU HONGFENG MASCH CO LTD