CN102297337A

CN102297337A - Application process of steam-to-steam jet flow direct mixing device in conveying of industrial steam of electric power plant

Info

Publication number: CN102297337A
Application number: CN2011102300384A
Authority: CN
Inventors: 周新田
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-05
Filing date: 2011-08-05
Publication date: 2011-12-28

Abstract

The steam for heating in winter or the industrial steam conveyed in an electric power plant is pumped from the high-quality steam in an air cylinder of a steam turbine to be conveyed, but lots of valve steam (low-quality steam) in the electric power plant does work, and then only can be used as condensation water through condensation to continuously compensate water for a boiler. In order to achieve the purposes of using the low-quality steam as much as possible and using the high-quality steam as little as possible, the invention adopts a design of a steam-to-steam jet flow direct mixing device; through the known technical parameters of conveying the steam, after the high-quality steam is jetted into the device, by utilizing the vacuum formed by a jet flow of the high-quality steam, the strong entrainment force is formed to mix the low-quality steam in the high-quality steam; simultaneously, through a design of a spray nozzle of the device, the precise control of an inlet amount of mixing the high-quality steam and the low-quality steam is achieved, so that the quality of the conveyed steam can be qualified, and the more low-quality steam can be used; the electricity-generating single-electricity coal consumption of the electric power plant can be decreased; and the coal is saved.

Description

Vapour vapour jet directly loads in mixture puts the technique for applying of carrying at power plant's industrial steam

One, technical field:

Patent of the present invention relates to the application of power plant external delivering vapor aspect.

Two, background technique:

Power plant inside has a large amount of valve vapour (the low-quality steam of low-temp low-pressure) can't utilize after generating at present, valve vapour can only be caused the cooling of the coagulator or the water tower that dries in the air, go into boiler from new benefit after forming water of condensation, but no matter winter heating still is a delivery industry steam in power plant, all need steam pumping (high-quality steam of High Temperature High Pressure) in the power plant steam turbine cylinder, it is many more to extract high-quality steam out, cause the single electric coal consumption of power plant's generating high more, required coal consumption is big more, at present power plant does not have good solution to reach to utilize valve vapour more, take out the purpose of high-quality steam less, can't accurately control the combined amount of high-quality steam and low-quality steam, if it is too much to mix inferior steam, must cause delivering vapor off quality, if carry high-quality steam too much, the single electric coal consumption of influence generating again causes the consumption coal too high.

Three, summary of the invention:

Use low-quality steam as much as possible in order to reach, use the purpose of high-quality steam less, the present invention adopts vapour vapour jet directly to load in mixture and installs meter, technical parameter (pressure and temperature) by known delivering vapor, after high-quality steam is injected this device, the vacuum of utilizing its jet to form, forming the powerful power of entrainmenting sneaks into low-quality steam, pass through the designs of nozzles of device simultaneously, reach the inlet that accurate control mixes two kinds of quality steam, thereby it is qualified to satisfy the quality of steam of carrying, again simultaneously requirements of using low-quality steam more, thus reduced the single electric coal consumption of generating of power plant.

Four, description of drawings;

Fig. 1 vapour vapour jet directly loads in mixture the interposed structure schematic representation

Vapour vapour jet directly loads in mixture to put by high-quality steam import (9), straight length (1), threeway (2), low-quality steam inlet (3), reducing tee (4), detection mouthful (5), a steam nozzle (6), nozzle (7), equipment outlet (8) to be formed, and uses bolt to connect fastening between each parts.The internal diameter of straight length (1) is 100mm, length is 200mm, the internal diameter of threeway (2) is 100mm, length is 260mm, highly be 254mm, reducing tee (4) is provided with and detects mouthful (5) wherein to detect mouthful (5) must internal diameter be 54.5mm, highly be 103mm, the internal diameter of reducing tee (4) is 100mm, length is 260mm, highly be 254mm, the steam inlet internal diameter of steam nozzle (6) is 90mm, the outlet internal diameter is 66mm, length is 310mm, reducing place inner taper be 40 ° 45 ', external taper be 51 ° 33 ', behind the reducing inner taper be 2 ° 41 ', external taper be 3 ° 2 ', nozzle (7) import internal diameter is 60mm for the 30mm external diameter, the outlet port internal diameter is 100mm for the 98mm external diameter, length is 255mm, internal taper is 20 °, inner flow development length is 60mm.

Fig. 2 workflow diagram

The 10th, high-quality steam; The 11st, low-quality steam; The 12nd, modulating valve; The 13rd, modulating valve; The 14th, vapour vapour jet directly loads in mixture to be put; The 15th, mixed qualified steam.

Working principle is: utilize high-quality steam (10) to enter the straight jet mixing flow device of vapour vapour (14) by modulating valve (12) and form at its steam nozzle place and spray effect and make that flow velocity is instantaneous to increase tens times, peripheral formation entrainmented strongly in the outlet port of steam nozzle, enter mixing chamber and finish mixed process thereby low-quality steam (11) entrainmented, according to wishing that the air rate example that reaches regulates the input of high-quality steam.Regulate flow control valve then, thereby guaranteed uniformity, the ratio stability of mixed gas.

Five, embodiment:

The high-quality steam pipeline is connected from equipment (9), low-quality steam pipe line connects from equipment (3), equipment (5) is located the setting pressure table, equipment (8) is located to connect steam pipeline and is got final product, inlet by modulating valve (12) control high-quality steam, thereby accurately control the inlet of the low-quality steam of sneaking into, satisfy the quality requirement of carrying mixed vapour (15).

Claims

1. the patent of the present invention vapour vapour jet that needs protection directly loads in mixture and installs meter, by straight length, threeway, reducing tee,, steam nozzle, nozzle form, and uses bolt to connect fastening between each parts.The internal diameter of straight length is 100mm, length is 200mm, the internal diameter of threeway is 100mm, length is 260mm, highly be 254mm, reducing tee is provided with and detects mouth and wherein detect mouthful to such an extent that internal diameter is 54.5mm, highly be 103mm, the internal diameter of reducing tee is 100mm, length is 260mm, highly be 254mm, the steam inlet internal diameter of steam nozzle is 90mm, the outlet internal diameter is 66mm, length is 310mm, reducing place inner taper be 40 ° 45 ', external taper be 51 ° 33 ', behind the reducing inner taper be 2 ° 41 ', external taper be 3 ° 2 ', the nozzle inlet internal diameter is 60mm for the 30mm external diameter, the outlet port internal diameter is 100mm for the 98mm external diameter, length is 255mm, internal taper is 20 °, inner flow development length is 60mm.

2. the patent of the present invention vapour vapour jet that needs protection directly loads in mixture the technique for applying method of carrying at the power plant industrial steam of putting.