SU1525288A1 - Steam turbine plant - Google Patents

Abstract

The invention improves the efficiency and reliability of a steam turbine plant. The installation is equipped with an additional water-jet pump (H) 16 with a check valve 17 communicated via working water by pipeline 18 with feedwater path 6 in front of the feed pump 9. Inlet 20 H 16 is connected to the pipeline 10 for removing condensate of heating steam from heaters (R) 4 of high pressure to the deaerator 12 before the check valve 13, and the outlet 21 behind the non-return valve 13. The pipe 11 for removing the condensate of heating steam from П 4 communicates with the condenser 2 of the turbine 1. Heating and connection of П 4 is performed immediately to the deaerator 12 without prior resetting to ondensate heating steam into the condenser 2. When the pressure of steam in the first along the feed water P 4 value 6,0-7,0 kgf / cm ² is introduced into the work of H 16, which ensures condensate drain from P 4 to the deaerator 12 through a control valve 14, which maintains the level at P 4. The check valve 17 prevents the working water H 16 from entering into P 4 with the control valve closed 14. When a sufficient pressure difference is reached between P 4 and the deaerator 12, H 16 is automatically taken out of operation. 1 il.

Description

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The aim of the invention is to increase the mln () of this and reliability by expanding 1i diipa on the work of the heaters by pressure pressure (MF, 1) at the outlet of the condenser (| 1a1a heating1е steam to the deaerator).

The drawing shows a schematic diagram of a steam turbine installation (PTU).

Vocational schools with: keeps turbine 1 with condenser 2, for groups (not shown) a pair of i.ii ojH, i half key) heaters 3 low ,,. I iIlM. li and lpd 4 included 1; ,;.,. ,, j, - condensate and nutrient is Mbi v to 1n; to 1 |; -atpy, booster and power-1. vi.; ,, п,, | - ..: 7, 8, and 9. Pipelines 1m ii i, .-.: 1;:. set the heating pair G. 1r.l 1,.:; G.; 1,, i Г and with a chrator 12 and Kon- G. || I1 1 2 ise gs gisnpo. On the pipeline 1,;, le II; c 1: i iiHi / icKhi 11; p ;; is the 1st and regulated nioiuiii wedge) and 1-1, and the pipelines, 11ds 11a rmaghra I i. N4M aHi) HKa is equipped with, D1, pp: h. IbHiJM iu i ..) i. Г i at And us m pasos .... (JiiiM) It) with DOjKi rot.; by valve 17, ci (I1.1 n.) no.- 1rub phono-1 (S, on KiJiiipoM settled down locking h;) ;: 1 p / kka 19, s | -racto: () nutrient p 1Dg1 | nepiM. I and i 1 gs, 1 i.r.i.iM 1; and;: with g-, 1 9, i.e. ioc. iiMiii .M Ii ovc to I iHi.iM lii CocoM 8. Ich l 20 i; 1.1khod 21 dong: ngelnom) of a well-bore pump Ui P (si%.; | |; d1; to the pipe- NG Ovodch 1 (1о 1И () д: 1 ko dsnsa; a i JJI.IO.IUTO pa jja. n dea: 1ra (:, 2 before and; and oztatpym to laiiaHDM eoo i mestnnenno.

i iiorpeh and; 1 (), AI,. } go down. 1ne I si Hi. Hocp (.; Ic 1 is not srach} same pas dearachci -. 12 Oez i | ic / jiapirn u noro cOpoc.-i Koii. K Hcara rneioiiici o. Pa PI; 1 4 to the capacitors 2, 1 through line 11. When l.: To 1/1 chen by generation in the é é peio- otse of the pair in a period of the course mon.: atelier - Hoi i in, | Ь1 1ВЛ 4 EN of the linens () 7 kgf / cm (; н нно / 1H |: o - daleyi l de, 1 xi | .- 12 7 kgf / sn {ab:) opened;: shut-off hinge / kka IV on ip 6oi; poBo; ic 18;: additionally, 1пи1 г, о, , acute i iiibiii naeos 16 injected into work, obs sschnva. condensate heating iia | ia from LDPE 4 and hrs: 1-зра; op 12

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through control valve 14, maintained at the PVD level 4.

The check valve 17 prevents potayuleniyu in the PVLT, 4 working water of the water jet pump 16 with the regulating valve 14 closed. The check valve 13 prevents the water jet pump 16 from being recycled.

When a sufficient pressure drop is reached between the LDPE 4 and the deaerator 12, which provides free drainage of the heating steam condensate to the deaerator 12, the shut-off valve 19 closes and the water-jet pump 16 is automatically taken out of operation. In this case, the condensate of heating steam from LDPE 4 is drained into deaerator 12 via pipeline 10 through open check valves 13, 17 and water jet pump 16.

Thus, from the beginning of the heating of the LDPE 4, the condensate of its heating steam is directed to the deaerator 12, which expands the range of operation of the LDPE 4 to the deaerator 12, thereby increasing the cost-effectiveness and reliability of the vocational technical school.

Claims (1)

Invention Formula A steam turbine plant containing a turbine with a condenser, to the steam extraction of which are connected low-pressure preheaters, a deaerator and high pressure preheaters located in the condensate and feedwater path with a condensate pump, booster pump and feed pump, while the condensate drain pipe of the Greek The iiiiicoKoi ohlen pressure heaters are connected to the deaerators) to the condenser, and the first of them is equipped with a non-return valve, and a water jet pump, which is one of the reasons that, with the aim of 1 The unit is equipped with a water jet pump, 1 () HCJ working water through an additional) closed check valve with iiiaKTGM feed, 1 water before the feed pump II connected at the inlet to the discharge pipe to the deaerator before and ml of)) K. iaiiaHOM respectively.