A drain system of high-pressure heater under deep regulation condition of thermal power unit

By using a condensate pump to boost the pressure under deep-conditioning conditions of the thermal power unit, the condensate from the No. 3 high-pressure heater is directly sent to the deaerator, which solves the problem of heat waste caused by the condensate flowing into the condenser by gravity, and improves the thermal economy and energy utilization efficiency of the unit.

CN224516756UActive Publication Date: 2026-07-17HEBEI DATANG INTERNATIONAL WANGTAN POWER GENERATION CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEBEI DATANG INTERNATIONAL WANGTAN POWER GENERATION CO LTD
Filing Date
2025-01-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Under deep-conditioning conditions of thermal power units, the condensate from the No. 3 high-pressure heater cannot flow by gravity to the deaerator, resulting in heat waste and cold source loss, which reduces the thermal economy of the unit.

Method used

By using a condensate pump to pressurize the condensate, the condensate from the No. 3 high-pressure heater is directly sent to the deaerator, avoiding the condensate from flowing into the condenser and enabling the reuse of the condensate.

Benefits of technology

It improves the thermal economy of thermal power units, avoids cold source loss, and enhances the energy utilization efficiency of the system.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224516756U_ABST
    Figure CN224516756U_ABST
Patent Text Reader

Abstract

The drain system of a high-pressure heater under deep regulation working condition of a thermal power unit comprises a No. 3 high-pressure heater, a drain pump inlet pipeline, a drain pump inlet valve, a drain pump, a drain pump outlet check valve, a drain pump outlet electric valve, a drain pump outlet pipeline, a flow nozzle, a drain pipeline outlet check valve, a manual valve and a deaerator. The high-pressure heater drain system provided in the utility model example can, under deep regulation working condition of the thermal power unit, increase the pressure of the No. 3 high-pressure heater drain through the drain pump and introduce the drain into the deaerator, thereby solving the problem that the No. 3 high-pressure heater drain cannot be self-flowed step by step and improving the safety and thermal economy of the drain system.
Need to check novelty before this filing date? Find Prior Art

Claims

1. A drain system of a high-pressure heater of a thermal power unit under deep regulation conditions, characterized in that: It includes No. 3 high-pressure heater (1), drain pump inlet pipeline (2), drain pump inlet valve (3), drain pump (4), drain pump outlet check valve (5), drain pump outlet electric valve (6), drain pump outlet pipeline (7), flow nozzle (12), drain pipeline outlet check valve (13), manual valve (14), deaerator (15); The drain pump inlet pipeline (2) is drawn from the accident drain pipeline (8) of No. 3 high-pressure heater (1), is connected through the drain pump inlet valve (3) and the drain pump (4), the drain pump outlet pipeline (7) is connected to the outlet of the normal drain pipeline (11) check valve, the drain pump outlet pipeline (7) is sequentially provided with the drain pump outlet check valve (5), the drain pump outlet electric valve (6), the flow nozzle (12), the drain pipeline outlet check valve (13) and the manual valve (14); When the thermal power generating unit load is deeply regulated, the valve on the normal drain pipeline (11) is closed, the drain pump (4) is started, and the No. 3 high-pressure heater (1) is drained and pressurized to enter the deaerator (15).

2. The drain system of the high-pressure heater of a thermal power unit under deep regulation conditions according to claim 1, characterized in that, The drain pump outlet pipeline (7) is introduced into the deaerator (15).