CN212671873U

CN212671873U - Descaling cooking structure of steam turbine

Info

Publication number: CN212671873U
Application number: CN202021618581.2U
Authority: CN
Inventors: 贾震宇; 吕建军; 姬明明; 夏辉; 韩少伟; 王春雷; 孙东东; 叶鹏
Original assignee: Datang Hulunbeier Fertilizer Co ltd
Current assignee: Datang Hulunbeier Fertilizer Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-03-09
Anticipated expiration: 2030-08-06

Abstract

Steam turbine scale removal boiling structure. The blades and other circulating parts are scaled in the operation process of the steam turbine, so that the stress of the blades is increased, and the output and the efficiency of the steam turbine are reduced along with the reduction of a circulating surface. The utility model discloses the constitution includes: the steam boiler comprises a main steam pipeline (1) communicated with a steam turbine inlet, a steam leading-out pipeline (7) communicated with a steam turbine outlet and a cooking pot (4), wherein a steam inlet (11) of the cooking pot is communicated to the steam leading-out pipeline through an inlet pipe (8), and a steam outlet (13) of the cooking pot is communicated to the main steam pipeline through an outlet pipe (3); the cooking pot comprises a pot body (12), wherein a steam inlet is formed in one side of the lower end of the pot body, a desalted water inlet (16) is formed in the other side of the lower end of the pot body, a steam outlet is formed in the upper end of the pot body, and an overflow valve (10) is arranged on the side face of the pot body. The utility model is used for the turbine scale removal.

Description

Descaling cooking structure of steam turbine

The technical field is as follows:

the utility model relates to a steam turbine scale removal technical field, concretely relates to steam turbine scale removal structure of cooking.

Background art:

the steam turbine is a heat energy power machine, and in the long-term operation process, due to the rapid change of steam quality, power load and other reasons, the blades and other circulating parts of the steam turbine are scaled in the operation process, so that the stress of the blades is increased, and the output and the efficiency of the steam turbine are reduced along with the reduction of a circulating surface. The normal operation of the steam turbine is influenced, and the scaling substances are removed by using a low-pressure saturated wet steam boiling method, so that the high-efficiency operation of the steam turbine set is ensured.

Generally, a small amount of salt substances always exist in boiler water, and can be divided into two types, namely water-soluble scaling substances (mainly sodium salt) and water-insoluble scaling substances (mainly oxides of silicon, magnesium, calcium and the like). The water-soluble scaling substances can be cleaned by wet steam, the insoluble scaling substances and the soluble scaling substances can be partially removed by the wet steam after being mixed, low-pressure saturated steam (0.6 MPa) is introduced into a manufactured cooking tank, desalted water in the cooking tank is sprayed out in a clamping mode (at the moment, the steam is in a moisture-containing state), and thus the moisture-containing steam enters a cylinder of the steam turbine, and the scaling substances on blades and circulating parts are dissolved and then discharged out of the steam turbine.

The utility model has the following contents:

the utility model aims at solving the scale deposit appears in the in-process blade of steam turbine at the operation and other circulation parts, makes blade stress increase, along with the reduction of circulation face moreover, causes the problem that steam turbine output, efficiency reduce, provides one kind and utilizes the demineralized water to smuggle the steam turbine scale removal boiling structure that the blowout contains humid steam secretly.

The above purpose is realized by the following technical scheme:

a descaling cooking structure of a steam turbine comprises the following components: the steam outlet of the cooking pot is communicated to the main steam pipe line through an outlet pipe;

the cooking pot comprises a pot body, wherein a steam inlet is formed in one side of the lower end of the pot body, a desalted water inlet is formed in the other side of the lower end of the pot body, a steam outlet is formed in the upper end of the pot body, and an overflow valve is arranged on the side face of the pot body.

The descaling cooking structure of the steam turbine is characterized in that a pressure gauge and a safety valve are installed at the bottom of the tank body.

Has the advantages that:

1. the utility model discloses utilize low pressure saturated steam to let in the cooking jar, the desalinized water in with the cooking jar smugglies the blowout secretly, and steam is the moisture-containing state this moment, contains in wet steam enters into the steam turbine cylinder like this, dissolves the back discharge steam turbine with the scale deposit thing on blade and the circulation part, can guarantee the high-efficient operation of steam turbine unit.

Description of the drawings:

FIG. 1 is a schematic diagram of the present invention;

FIG. 2 is a schematic view of the construction of the digester;

in the figure: 1. a primary steam line; 2. an isolation valve; 3. an outlet pipe; 4. a cooking pot; 5. quickly closing the valve; 6. a steam turbine; 7. a steam outlet line; 8. an inlet tube; 9. the outward delivery quick closing valve; 10. an overflow valve; 11. a steam inlet; 12. a tank body; 13. a steam outlet; 14. a pressure gauge; 15. a safety valve; 16. and a desalted water inlet.

The specific implementation mode is as follows:

example 1:

a descaling cooking structure of a steam turbine comprises the following components: the steam boiler comprises a main steam pipeline 1 communicated with a steam turbine inlet, a steam leading-out pipeline 7 communicated with a steam turbine outlet and a cooking pot 4, wherein a steam inlet 11 of the cooking pot is communicated to the steam leading-out pipeline through an inlet pipe 8, a steam outlet 13 of the cooking pot is communicated to the main steam pipeline through an outlet pipe 3, an isolation valve 2 and a quick closing valve 5 are installed on the main steam pipeline, and an outward feeding quick closing valve 9 is installed on the steam leading-out pipeline;

the cooking pot comprises a pot body 12, wherein a steam inlet is formed in one side of the lower end of the pot body, a desalted water inlet 16 is formed in the other side of the lower end of the pot body, a steam outlet is formed in the upper end of the pot body, and an overflow valve 10 is arranged on the side face of the pot body.

Example 2:

according to the descaling and cooking structure of the steam turbine in the embodiment 1, the bottom of the tank body is provided with the pressure gauge 14 and the safety valve 15.

The working principle is as follows: when the steam turbine operates, 3.82MPa steam is introduced into the main steam pipeline, enters the steam turbine and is discharged to a pipe network through a steam outlet pipeline, and the steam of the steam outlet pipeline is 0.6 MPa;

when the steam turbine stops operating, the outward feeding quick closing valve and the isolating valve are closed, 0.6MPa steam of a steam leading-out pipeline enters the tank body through the inlet pipe, low-pressure steam is led to the cooking tank, and a pressure gauge at the top of the cooking tank is strictly controlled to be 0.2MPa during operation.

The field personnel slowly open demineralized water inlet valve, introduce demineralized water into the cooking pot (demineralized water gets into from the cooking pot bottom), until the lateral overflow valve of cooking pot has water to spill over slightly can, demineralized water gets into the cooking pot, cool down low-pressure steam, thereby reach the steam moisture state, the wet steam of cooking pot passes through the outlet pipe, get into the main steam pipeline, get into the steam turbine through the quick-closing valve, begin to cook, descale the steam turbine, ensure that the scaling thing can be smooth to be clear away, directly discharge after the descale.

Claims

1. A descaling cooking structure of a steam turbine comprises the following components: the steam-steam boiler comprises a main steam pipeline communicated with an inlet of a steam turbine, a steam leading-out pipeline communicated with an outlet of the steam turbine and a cooking pot, and is characterized in that: a steam inlet of the cooking pot is communicated to the steam outlet pipeline through an inlet pipe, and a steam outlet of the cooking pot is communicated to the main steam pipeline through an outlet pipe; the cooking pot comprises a pot body, wherein a steam inlet is formed in one side of the lower end of the pot body, a desalted water inlet is formed in the other side of the lower end of the pot body, a steam outlet is formed in the upper end of the pot body, and an overflow valve is arranged on the side face of the pot body.

2. The steam turbine descaling cooking structure according to claim 1, wherein: and a pressure gauge and a safety valve are arranged at the bottom of the tank body.