CN217421296U

CN217421296U - Hydrophobic recovery mechanism of turboset

Info

Publication number: CN217421296U
Application number: CN202221633246.9U
Authority: CN
Inventors: 温晓旭
Original assignee: Xiahe Qilianshan Andoo Cement Co ltd
Current assignee: Xiahe Qilianshan Andoo Cement Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-09-13
Anticipated expiration: 2032-06-28

Abstract

The utility model discloses a steam turbine set drainage recovery mechanism, including main steam pipeline drain pipe, steam turbine drain pipe, drain header and drainage recovery box, one end of main steam pipeline drain pipe links to each other with main steam pipeline, the other end of main steam pipeline drain pipe links to each other with drain header, steam turbine drain pipe includes steam turbine shaft seal drain pipe, steam turbine body drain pipe, steam turbine steam extraction drain pipe and steam turbine main valve drain pipe, steam turbine shaft seal drain pipe, steam turbine body drain pipe, one end of steam turbine steam extraction drain pipe and steam turbine main valve drain pipe is connected respectively in the corresponding drainage position department of steam turbine, steam turbine drain pipe, steam turbine body drain pipe, the other end of steam turbine steam extraction drain pipe and steam turbine main valve drain pipe all link to each other with drain header, the outlet end of drain header links to each other with the inlet end of drainage recovery box, the water outlet end of the drain main pipe is provided with a drain valve. The problem of the defect of current turboset drainage recovery mechanism is solved.

Description

Hydrophobic recovery mechanism of steam turbine set

Technical Field

The utility model relates to an equipment field, especially a hydrophobic mechanism of retrieving of steam turbine unit for steam turbine unit.

Background

Water drainage technology for original turboset

1. The drainage of the main steam pipeline is from the outlet of the superheater of the boiler to the main steam pipeline between main valves of the steam turbine, and each low point is provided with drainage. If the main steam pipeline is divided into a plurality of branch pipes to be connected with the steam turbine, each branch pipe and the main pipe are provided with a hydrophobic point.

2. The upper drainage system of the main steam pipeline is used for timely draining condensed water in the pipeline within a period of time after starting and stopping, and accelerating the starting speed at the same time.

3. The steam turbine drainage system is characterized in that a drainage pipe is arranged at the low point of steam turbine body equipment (an inner cylinder, an outer cylinder, a partition plate sleeve, a main steam valve, a regulating valve and the like) and related pipelines (main steam, steam guide, steam exhaust, steam extraction, shaft seal steam and other pipelines), and in the processes of starting, stable operation, load change, load shedding, stopping and the like of a steam turbine, internal accumulated water is discharged through reasonably controlling the drainage valve, so that the steam turbine equipment and the related pipelines are prevented from water inlet or cold steam backflow, and the safety of the steam turbine equipment is ensured.

The disadvantages of the prior art include:

1. the main steam drainage is directly connected with a plant drainage pipe network, so that a large amount of water resource waste is caused.

2. The pressure of the drain pipe is increased when the main steam is discharged to a pipe network due to the fact that the pressure (about 0.9 Mpa) and the temperature (about 280 ℃) of the main steam are high, and water in the drain main pipe rushes to the opening of the pipeline under the action of the pressure to cause drain backflow and affect normal drainage of other drain points.

3. The shaft seal drainage, the body drainage and the steam extraction drainage of the steam turbine are directly discharged to a drainage trench, on one hand, water resource waste is caused, and on the other hand, the drainage is quickly released under the action of pressure when steam-water mixture is discharged, so that the discharge noise is large (more than 85 decibels).

4. The pressure of the main steam pipeline and the steam turbine unit drain water drainage pipe cannot be released in time, the resistance is relatively large, the unit is heated, the warming time is too long, and the total starting time is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydrophobic recovery mechanism of turboset solves the hydrophobic recovery mechanism of current turboset and directly links to each other with the factory's drainage pipe network, can influence the drainage pipe network drainage and can cause the problem of water waste and the big problem of noise when unit heating coil, warm-up time overlength, drainage.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a steam turbine set drainage recovery mechanism comprises a main steam pipeline drainage pipe, a steam turbine drainage pipe, a drainage main pipe and a drainage recovery box, wherein one end of the main steam pipeline drainage pipe is connected with the main steam pipeline, the other end of the main steam pipeline drainage pipe is connected with the drainage main pipe, the steam turbine drainage pipe comprises a steam turbine shaft seal drainage pipe, a steam turbine body drainage pipe, a steam turbine steam extraction drainage pipe and a steam turbine main valve drainage pipe, one ends of the steam turbine shaft seal drainage pipe, the steam turbine body drainage pipe, the steam turbine steam extraction drainage pipe and the steam turbine main valve drainage pipe are respectively connected with corresponding drainage positions of a steam turbine, the other ends of the steam turbine shaft seal drainage pipe, the steam turbine body drainage pipe, the steam turbine steam extraction drainage pipe and the steam turbine main valve drainage pipe are all connected with the drainage main pipe, and a water outlet end of the drainage main pipe is connected with a water inlet end of the drainage recovery box, and a drain valve is arranged at the water outlet end of the drain main pipe.

The steam turbine steam trap is characterized in that a main steam pipeline steam trap and a steam turbine steam trap are converged into one steam trap, a steam trap is arranged at the water outlet end of the steam trap and can block steam discharge, the trap only passes water and does not pass steam, therefore, no noise is generated in the process of draining, occupational hazards are avoided, a drain recovery box is installed at the tail end of the steam trap, shaft seal drainage in a steam turbine system, body drainage, steam extraction drainage, drainage in the front and back of a main steam valve, a main boiler drainage steam pipe, steam collection cylinder drainage and the like pass through the steam trap and finally flow to the drain recovery box for collection through a special drain valve, and therefore, condensed water in the pipeline of a unit during starting and warming can be directly discharged into the drain recovery box without being discharged into a plant area pipe network, and has no influence on other drainage of a plant area.

As the utility model discloses a further preferred, the middle part of main steam pipeline drain pipe and steam turbine drain pipe all is equipped with the valve.

As a further preference of the present invention, the top of the drain recovery tank is provided with a pressure release pipe.

The pressure in the hydrophobic manifold can be released.

As a further preferred aspect of the present invention, the release port of the pressure release pipe is located outdoors.

As the utility model discloses a further preferred, the delivery port department of hydrophobic collection box is equipped with the hydrophobic pump, and the play water end of hydrophobic pump then has the oxygen-eliminating device through the pipeline even, the oxygen-eliminating device passes through the pipeline and links to each other with the boiler feed pump.

The quality of the water recovered by the drainage recovery box reaches the water standard of an industrial boiler, and the water is conveyed to a deaerator by a drainage pump to be used for supplementing water to the boiler.

As a further preferred aspect of the present invention, the size of hydrophobic collection box is 5m thin shoots.

Compared with the prior art, the utility model discloses can reach one in following beneficial effect at least:

1. the steam turbine steam trap is characterized in that a main steam pipeline steam trap and a steam turbine steam trap are converged into one steam trap, a steam trap is arranged at the water outlet end of the steam trap and can block steam discharge, the trap only passes water and does not pass steam, therefore, no noise is generated in the process of draining, occupational hazards are avoided, a drain recovery box is installed at the tail end of the steam trap, shaft seal drainage in a steam turbine system, body drainage, steam extraction drainage, drainage in the front and back of a main steam valve, a main boiler drainage steam pipe, steam collection cylinder drainage and the like pass through the steam trap and finally flow to the drain recovery box for collection through a special drain valve, and therefore, condensed water in the pipeline of a unit during starting and warming can be directly discharged into the drain recovery box without being discharged into a plant area pipe network, and has no influence on other drainage of a plant area.

2. The pressure in the hydrophobic manifold can be released.

3. The quality of the water recovered by the drainage recovery box reaches the water standard of an industrial boiler, and the water is conveyed to a deaerator by a drainage pump to be used for supplementing water to the boiler.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Specific example 1:

FIG. 1 shows a steam turbine unit drainage recovery mechanism, which comprises a main steam pipeline drainage pipe 1, a steam turbine drainage pipe 2, a drainage header pipe 3 and a drainage recovery box 4, wherein one end of the main steam pipeline drainage pipe 1 is connected with the main steam pipeline, the other end of the main steam pipeline drainage pipe 1 is connected with the drainage header pipe 3, the steam turbine drainage pipe 2 comprises a steam turbine shaft seal drainage pipe, a steam turbine body drainage pipe, a steam turbine extraction drainage pipe and a steam turbine main valve drainage pipe, one ends of the steam turbine shaft seal drainage pipe, the steam turbine body drainage pipe, the steam turbine extraction drainage pipe and the steam turbine main valve drainage pipe are respectively connected with corresponding drainage positions of a steam turbine, the other ends of the steam turbine shaft seal drainage pipe, the steam turbine body drainage pipe, the steam turbine extraction drainage pipe and the steam turbine main valve drainage pipe are all connected with the drainage header pipe 3, and a water outlet end of the drainage header pipe 3 is connected with a water inlet end of the drainage recovery box 4, and a drain valve 5 is arranged at the water outlet end of the drain header pipe 3.

Specific example 2:

in this embodiment, a main steam pipe 1 and a steam turbine 2 are further described on the basis of specific embodiment 1, and valves are disposed in the middle portions of the main steam pipe 1 and the steam turbine 2.

Specific example 3:

this embodiment is further illustrated on the basis of the specific embodiment 1, wherein the top of the hydrophobic recovery tank 4 is provided with a pressure relief pipe 6.

The pressure in the hydrophobic manifold can be released.

Specific example 4:

this embodiment is further explained based on the embodiment 3, in which the pressure release pipe 6 has a release port located outdoors.

Specific example 5:

this embodiment has further explained hydrophobic collection box 4 on the basis of specific embodiment 1, the delivery port department of hydrophobic collection box 4 is equipped with drain pump 7, and the play water end of drain pump 7 then links to each other through the pipeline has oxygen-eliminating device 8, oxygen-eliminating device 8 passes through the pipeline and links to each other with boiler feed pump 9.

The quality of the water recovered by the drainage recovery box reaches the standard of water for industrial boilers, and the water is conveyed to a deaerator by a drainage pump to be used for supplementing water for the boilers.

Specific example 6:

this example further illustrates the hydrophobic recycling bin 4 according to example 1, wherein the hydrophobic recycling bin 4 is obtained by 5m high-speed cultivation.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a hydrophobic recovery mechanism of steam turbine unit, includes main steam conduit drain pipe (1), steam turbine drain pipe (2), drain header pipe (3) and hydrophobic collection box (4), its characterized in that: one end of the main steam pipeline drain pipe (1) is connected with the main steam pipeline, the other end of the main steam pipeline drain pipe (1) is connected with the drain main pipe (3), the steam turbine drain pipe (2) comprises a steam turbine shaft seal drain pipe, a steam turbine body drain pipe, a steam turbine extraction drain pipe and a steam turbine main valve drain pipe, one end of each of the steam turbine shaft seal drain pipe, the steam turbine body drain pipe, the steam turbine steam extraction drain pipe and the steam turbine main valve drain pipe is respectively connected with a corresponding drain position of the steam turbine, and the other end of each of the steam turbine shaft seal drain pipe, the steam turbine body drain pipe, the steam turbine steam extraction drain pipe and the steam turbine main valve drain pipe is connected with a drain header pipe (3), the water outlet end of the main drainage pipe (3) is connected with the water inlet end of the drainage recovery box (4), and the water outlet end of the main drainage pipe (3) is provided with a drainage valve (5).

2. The steam turbine hydrophobic recovery mechanism of claim 1, wherein: valves are arranged in the middle of the main steam pipeline drain pipe (1) and the steam turbine drain pipe (2).

3. The steam turbine hydrophobic recovery mechanism of claim 1, wherein: and a pressure release pipe (6) is arranged at the top of the hydrophobic recovery box (4).

4. The steam turbine hydrophobic recovery mechanism of claim 3, wherein: the release port of the pressure release pipe (6) is positioned outdoors.

5. The steam turbine hydrophobic recovery mechanism of claim 1, wherein: the water outlet of the drainage recovery box (4) is provided with a drainage pump (7), the water outlet end of the drainage pump (7) is connected with a deaerator (8) through a pipeline, and the deaerator (8) is connected with a boiler feed pump (9) through a pipeline.

6. The steam turbine hydrophobic recovery mechanism of claim 1, wherein: and (3) carrying out 5m high-speed plantation on the hydrophobic recovery box (4).