SU1726790A1 - Low pressure cylinder - Google Patents

Description

The invention relates to power plant engineering, in particular to steam turbine building.

The purpose of the invention is to increase the reliability and efficiency of the low pressure cylinder (LPC) and turbo-installation as a whole by eliminating lateral forces (horizontal) transmitted through a condenser to the upper channel of the basement, and eliminating the lateral spreads caused by these forces with the cylinder and each other. other half couplings and exceptions

uneven loads on the upper Rus basement, .conditioned mo-. with the turbine axis,. from both horizontal and vertical forces applied to the condenser, and thus excluding both lateral horizontal and vertical centerings of the rotors with the cylinder and with each other caused by these forces, as well as partially reducing the forces of water in capacitor transmitted to the upper rus.

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FIG. Figure 1 shows a schematic diagram of a low pressure cylinder with a vertical arrangement of additional pipelines, figure 2 shows the same, with the location of additional pipelines symmetrically to the main circulation pipelines.

The low-pressure cylinder 1 contains exhaust nozzles 2, the support suits-3 of which are on the upper upper eng 5 on the bridges placed on the columns, a means (key) 7 for fixing the low-pressure cylinders 1 on the foundation 6 and a condenser I mounted on the latter on spring supports 8 connected to exhaust pipes 2 and communicated with the main circulation pipelines (conduits) 10 fixed on the foundation 10 and equipped with elastic compensators 11. The low-pressure cylinder 1 provides additional pipes 12-14 with elastic compensators 15. Each additional pipeline 14 with elastic compensators 15 is made similarly to the main pipelines 10, installed symmetrically to its main pipeline 10 relative to the longitudinal plane 16 of the low-pressure cylinder 1 and communicated with it by a jumper 17. Both ends 18 and 19 of additional pipes 12-14 are plugged, one end 18 is rigidly fastened to the condenser 9, and the other is fixed on foundation 6,

Additional pipes 12 and 13 are installed symmetrically with respect to the longitudinal plane 16 and communicated by pipe 20 with a source 21 of overpressure, which communicates with a condenser 9. As a source 21 of overpressure, a main pressure circulation pipe 10 or a pressure line of a condensate pump ( not shown), where the pressure is greater than in the main pipelines 10. Additional pipes 12-14 are connected to one or another of the indicated sources 21 overpressure. Additional pipelines 12, 13 are arranged vertically, but can be placed obliquely, and their number and diameter

to

15

25

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It is selected depending on the source 21 to compensate for the force of the weight of water in the condenser.

During the operation of the turbine installation in the main pipelines (conduits) 10, forces arise from the pressure of the circulating water. These forces, due to the elasticity of the compensators 11, are transmitted to the condenser 9. At the same time, due to the fact that the additional pipes 12, 13 and 14 are connected to the source 21 of the overpressure, they generate forces from the pressure of the water. These forces, due to the elasticity of the compensators 15, are transmitted to the capacitor 9.

With the vertical arrangement of the additional pipelines 12 and 13 20, the total forces from the water pressure in them compensate for the weight of water in the condenser 9, and for their inclined arrangement, the total value of the horizontal components of the water pressure in them should be zero, and the total value of the vertical components compensates weight of water in condenser 9.

The forces arising in the main and additional pipelines 10 and 14 (FIG. 2) are equal in magnitude and are arranged symmetrically with respect to the longitudinal plane 16 of the low-pressure cylinder 1. From. This implies that the horizontal components of these capacitors 9 applied to these capacitors. The forces are equal in magnitude and oppositely directed, and the vertical components are equal in magnitude, directed upwards and symmetrical about the plane 16. This results in the addition (doubling) of the vertical component forces acting from the side of the pipelines 20, 14 to the condenser .9 and directed upwards, as a result of which the downward force from the weight of water in the condenser I, acting on the upper layer 5 of the foundation 6, decreases. Both of the pipelines 10, 14 to the condenser 9 are balanced with respect to the axis of the IDL 1.

Priorities: according to claim 1. 01.22.85, according to Claim 2 - 01.23.85.

thirty

35

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sixteen

FIG. 2

Claims (1)

1. A LOW PRESSURE CYLINDER containing exhaust pipes that rest on the upper tier of the foundation; and means of fixing relative to the foundation, on which a capacitor is mounted on the spring supports, connected to the exhaust · pipes and communicated with the main circulation pipelines fixed to the foundation,