A heating network steam-driven circulating water pump system
A heat network circulating water pump and circulating water pump technology, which is applied in pump control, machine/engine, liquid variable capacity machinery, etc., can solve the problems of reducing the risk of accidents, and achieve the effect of reducing risk and saving energy
Inactive Publication Date: 2017-02-15
HUADIAN POWER INTERNATIONAL CORPORATION LTD +2
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Problems solved by technology
[0006] The purpose of the present invention is to provide a heating network steam-driven circulating water pump system to solve the problem that the three small machines will not trip at the same time when the inlet steam pressure of #1A and 1B heaters suddenly drops abnormally, thereby reducing the risk of accidents. Risky
Method used
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Comparison scheme
Effect test
Embodiment 1
[0044] A heat network steam-driven circulating water pump system, comprising a steam-driven heating network circulating water pump, the steam supply source of the steam-driven heating network circulating water pump is taken from the steam network, and the electrical overspeed and mechanical overspeed of the steam-driven heating network circulating water pump The action values are distributed in steps, and their high and low arrangement sequences correspond to each other.
Embodiment 2
[0046] A steam-driven circulating water pump system for a heating network is similar to Embodiment 1, except that the exhaust steam of the circulating water pump of the steam-driven heating network is discharged to the steam inlet side of heaters #1A and 1B of the first station of the heating network.
Embodiment 3
[0048] A steam-driven circulating water pump system for a heating network is similar to Embodiment 2, except that the number of circulating water pumps in a steam-driven heating network is three.
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The invention relates to a heating network steam-driven circulation water pump system. The heating network steam-driven circulation water pump system comprises a steam-driven heating network circulation water pump, a steam supply source of the steam-driven heating network circulation water pump is taken from a steam network, the operating value of the electric overspeed and the operating value of the mechanical overspeed of the steam-driven heating network circulation water pump are distributed in an echelon mode, and the high-and-low arrangement sequences of the operating values correspond to each other. Through the heating network steam-driven circulation water pump system, heat can be recycled, and a very good energy saving effect is achieved; the heating network steam-driven circulation water pump system can guarantee that three small machines will not trip out at the same time when steam inlet pressure of a number 1A heater and steam inlet pressure of a number 1B heater suddenly drop abnormally, and thus the risk of accidents is reduced.
Description
Technical field [0001] The invention belongs to the technical field of the first station of a heating network, and relates to a heating network water pump system, in particular to a heating network steam-driven circulating water pump system. Background technique [0002] At present, the first station of the heating network is equipped with 3 steam-driven heating network circulating water pumps, namely #1, 4, and 5 heating network circulating water pumps. The steam supply of the 3 small units is taken from the steam network, and the pressure is stable at 0.8MPa. The exhaust steam of 3 small units is discharged to the inlet side of heaters #1A and 1B in the first station of the heating network for heat recovery and utilization, which achieves good energy-saving effects; usually the inlet steam source of #1A and 1B heaters is from # 2 The medium pressure cylinder extraction steam of the unit is provided. When the #2 unit failure causes the intermediate pressure cylinder extraction t...
Claims
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IPC IPC(8): F04B49/06
Inventor 段君寨苏振勇姜维军石德静张红炬董成山邹品松王刚刘金庭
Owner HUADIAN POWER INTERNATIONAL CORPORATION LTD