CN219139147U

CN219139147U - Steam turbine heat insulation device

Info

Publication number: CN219139147U
Application number: CN202222975897.2U
Authority: CN
Inventors: 王建中; 周亚军
Original assignee: Gaomi Lilang Mingde Environmental Protection Technology Co ltd
Current assignee: Gaomi Lilang Mingde Environmental Protection Technology Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-06-06
Anticipated expiration: 2032-11-09

Abstract

The utility model discloses a steam turbine heat insulation device, which comprises a box body, a first temperature sensor and a second temperature sensor, wherein the box body, the first temperature sensor and the second temperature sensor are connected to two sides of the length direction of a steam turbine in a sliding manner, an upper baffling heat insulation board is arranged in an inner cavity of the box body, a lower baffling heat insulation board is arranged in the inner cavity of the box body, when the temperature of the steam turbine is not higher than 600 ℃, the lower baffling heat insulation board and the upper baffling heat insulation board insulate heat in the inner cavity of the box body, so that the steam turbine is insulated, when the temperature of the steam turbine is higher than 600 ℃, cold water or cooling liquid can cool the lower baffling heat insulation board, the upper baffling heat insulation board and the inner cavity of the box body, the upper baffling heat insulation board and the lower baffling heat insulation board can slow down the water flow speed, the cooling efficiency is improved, so that the heat of the steam turbine is radiated, and the heat of the steam turbine is conveniently maintained, and the heat of the steam turbine is conveniently radiated when the heat of the steam turbine is overhigh, and the service life of the steam turbine is prolonged.

Description

Steam turbine heat insulation device

Technical Field

The utility model relates to a steam turbine heat insulation device.

Background

The steam turbine is necessary equipment in the production of a power plant, the higher the steam temperature is in the working process of the steam turbine, the higher the efficiency of the power plant is, the steam needs to be heated by a boiler before entering the steam turbine, the heat dissipation of the steam turbine is avoided in the working process, the temperature born by the turbine blade material cannot exceed 600 ℃, the heat is also generated in the working process of the steam turbine, the steam turbine is damaged once the temperature exceeds 600 ℃, and the service life is shortened. In addition, the outside of steam turbine still needs to insulate against heat, avoids the staff to scald, and it is thus clear that the heat insulation and the cooling need go on simultaneously in the steam turbine working process.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides the heat insulation device of the steam turbine, which is convenient for maintaining the heat of the steam turbine, and is convenient for radiating when the heat of the steam turbine is too high, so that the service life of the steam turbine is prolonged.

The utility model is realized in this way, a kind of steam turbine heat insulation device, including the symmetrical box that sets up in the two sides of the length direction of the steam turbine, its structural feature is: the steam turbine length direction's both sides portion symmetry is equipped with the slide, box sliding connection is on the slide, the relative medial surface of box is the curved surface, curved surface's outer wall sets up first temperature sensor, the top of box is equipped with the inlet solenoid valve that is connected with first temperature sensor electricity, is connected with the inlet tube that stretches into in the box inner chamber on the inlet solenoid valve, install second temperature sensor on the box rear portion inner wall, the outside of box lower part is equipped with the play water solenoid valve that is connected with second temperature sensor electricity, is connected with the outlet pipe that stretches into in the box inner chamber on the play water solenoid valve, install a plurality of upper heat preservation boards that extend downwards and the interval set up from box top inner wall in the box inner chamber, install a plurality of lower heat preservation boards that extend upwards and the interval set up from box bottom inner wall in the box inner chamber, be equipped with down the flow channel between upper heat preservation board and the box bottom inner wall, be equipped with the flow channel between lower baffling board and the box top inner wall.

Further preferred is the following scheme: the upper and lower portion, left and right both sides portion and rear portion of box are by thermal insulation shell and thermal insulation inner shell constitution, are equipped with the aerogel heat preservation between thermal insulation shell and the thermal insulation inner shell.

Further preferred is the following scheme: the inner side of the heat-insulating inner shell is coated with high-temperature-resistant waterproof paint.

Further preferred is the following scheme: the curved surface consists of a heat insulation shell, and a fireproof layer is arranged on the opposite outer side surface of the heat insulation shell.

Further preferred is the following scheme: the lower part of the box body is symmetrically provided with sliding rails which are matched with the sliding rails.

Further preferred is the following scheme: the box body is provided with an electrical control system, and the first temperature sensor, the water inlet electromagnetic valve, the second temperature sensor and the water outlet electromagnetic valve are respectively and electrically connected with the electrical control system.

Compared with the prior art, the utility model has the following beneficial effects:

the cold water or the cooling liquid flows along the plurality of running water channels, the downflow water channels and the upflow water channels in the inner cavity of the box body, so that the flowing speed is slowed down, the heat absorption efficiency is improved, and the turbine is fully cooled. When the second temperature sensor detects that the water temperature reaches the set temperature, the water outlet electromagnetic valve is opened, cold water or cooling liquid after heat absorption flows out through the water outlet pipe, and the flowing hot water or the cooling liquid after heat absorption can be reused as heating water.

The lower baffle heat preservation plate and the upper baffle heat preservation plate have heat preservation effect, when the temperature of the steam turbine is not higher than 600 ℃, the lower baffle heat preservation plate and the upper baffle heat preservation plate preserve heat in the inner cavity of the box body, so that the steam turbine is subjected to heat preservation, when the temperature of the steam turbine is higher than 600 ℃, cold water or cooling liquid can cool the lower baffle heat preservation plate, the upper baffle heat preservation plate and the inner cavity of the box body, so that heat of the steam turbine is dissipated, and the heat dissipation effect of the steam turbine is achieved.

In summary, the utility model is convenient for maintaining the heat of the steam turbine, and is convenient for radiating when the heat of the steam turbine is too high, thereby prolonging the service life of the steam turbine.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a combined state diagram of two cases.

Detailed Description

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.

The structure of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-2, the heat insulation device for a steam turbine provided by the embodiment of the utility model comprises the box bodies 1 symmetrically arranged at two side parts of the length direction of the steam turbine, the two side parts of the length direction of the steam turbine are symmetrically provided with the slide rails 10, the box bodies 1 are slidably connected to the slide rails 10, the lower parts of the box bodies 1 in the embodiment are symmetrically provided with the slide rails 4, and the slide rails 4 are matched with the slide rails 10, as shown in fig. 3 and 2, so that the two box bodies 1 can be butted together, and the whole steam turbine is covered.

As shown in FIG. 1, the opposite inner side of the box 1 is an arc surface, a first temperature sensor 11 is arranged on the outer wall of the arc surface, a water inlet electromagnetic valve 12 electrically connected with the first temperature sensor 11 is arranged on the inner side of the top of the box 1, a water inlet pipe 14 extending into the inner cavity of the box 1 is connected to the water inlet electromagnetic valve 12, the arrangement position of the water inlet pipe 14 is positioned on the inner side of the box 1 and close to a steam turbine, a second temperature sensor 12 is arranged on the inner wall of the rear part of the box 1, a water outlet electromagnetic valve 13 electrically connected with the second temperature sensor 12 is arranged on the outer side of the lower part of the box 1, a water outlet pipe 15 extending into the inner cavity of the box 1 is connected to the water outlet electromagnetic valve 13, the arrangement position of the water outlet pipe 15 is positioned on the outer side of the box 1 and far away from the steam turbine, and when the first temperature sensor 11 detects that the temperature of the steam turbine exceeds 600 ℃, the water inlet electromagnetic valve 12 is opened, and cold water or cooling liquid enters the inner cavity of the box 1 through the water inlet pipe 14 to absorb heat. In this embodiment, a plurality of upper baffle heat preservation plates 2 extending downwards from the inner wall of the top of the box 1 and arranged at intervals are installed in the inner cavity of the box 1, a plurality of lower baffle heat preservation plates 3 extending upwards from the inner wall of the bottom of the box 1 and arranged at intervals are installed in the inner cavity of the box 1, a lower water flow channel 16 is arranged between the upper baffle heat preservation plates 2 and the inner wall of the bottom of the box 1, an upper water flow channel 17 is arranged between the lower baffle heat preservation plates 3 and the inner wall of the top of the box 1, in addition, a water flow channel is also formed between two adjacent baffle heat absorption plates, and cold water or cooling liquid flows along the plurality of water flow channels, the lower water flow channel 16 and the upper water flow channel 17 in the inner cavity of the box 1, so that the flow speed is slowed down, the heat absorption efficiency is improved, and the turbine is cooled sufficiently. When the cold water circularly flows and fully absorbs heat and reaches the water outlet pipe 15, the second temperature sensor 12 detects that the water temperature reaches the set temperature, the water outlet electromagnetic valve 13 is opened, the cold water or cooling liquid after heat absorption flows out through the water outlet pipe 15, and the flowing hot water or the cooling liquid after heating can be reused as heating water.

In this embodiment, the lower baffle heat-insulating plate 3 and the upper baffle heat-insulating plate 2 have heat-insulating effect, when the temperature of the steam turbine is not more than 600 ℃, the lower baffle heat-insulating plate 3 and the upper baffle heat-insulating plate 2 insulate heat in the inner cavity of the box body 1, so as to play a role in heat insulation of the steam turbine, and when the temperature of the steam turbine is more than 600 ℃, cold water or cooling liquid can cool the lower baffle heat-insulating plate 3, the upper baffle heat-insulating plate 2 and the inner cavity of the box body 1, so that heat of the steam turbine is dissipated, and further the heat dissipation effect of the steam turbine is played.

When water is selected to cool the inner cavity of the box body 1, the pressure of the inner cavity of the box body 1 can be adjusted according to actual needs, so that the boiling point of the water is changed.

As shown in fig. 1, the upper and lower parts, the left and right side parts and the rear part of the box body 1 are composed of a heat insulation outer shell 101 and a heat insulation inner shell 102, an aerogel heat insulation layer 103 is arranged between the heat insulation outer shell 101 and the heat insulation inner shell 102, the structure is that the outer wall of the box body 1 is composed of the heat insulation outer shell 101, the heat insulation inner shell 102 and the aerogel heat insulation layer 103, and the structure can ensure good heat insulation effect of the box body 1 and avoid scalding personnel.

As shown in fig. 1, the inner side of the heat-insulating inner shell 102 is coated with a high-temperature-resistant waterproof coating, which can avoid water seepage when used for a long time because water circulation is needed in the box 1 and the water circulation process is continuously heated.

As shown in fig. 1, the curved surface is composed of a heat insulation shell 101, a fireproof layer 104 is arranged on the opposite outer side surface of the heat insulation shell 101, the fireproof layer 104 can be made of high-temperature-resistant fireproof cloth, and the fireproof layer 104 can protect the heat insulation shell 101 and prevent fire due to the fact that the curved surface is close to a steam turbine and is affected by high temperature for a long time.

In this embodiment, an electrical control system is disposed on the case 1, and the first temperature sensor 11, the water inlet electromagnetic valve 12, the second temperature sensor 12, and the water outlet electromagnetic valve 13 are electrically connected with the electrical control system, and the electrical connection relationship in this embodiment is in the prior art, which is not described herein. In addition, the heat-insulating outer shell and the heat-insulating inner shell selected in the embodiment are made of materials in the prior art, and are not described herein.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a steam turbine heat insulating device, includes box (1) of symmetry setting at steam turbine length direction both sides portion, characterized by: the steam turbine length direction's both sides portion symmetry is equipped with slide (10), box (1) sliding connection is on slide (10), the relative medial surface of box (1) is the curved surface, the outer wall of curved surface sets up first temperature sensor (11), the top of box (1) is equipped with inlet solenoid valve (12) that are connected with first temperature sensor (11) electricity, is connected with inlet tube (14) that stretch into in box (1) inner chamber on inlet solenoid valve (12), install second temperature sensor (12) on box (1) rear portion inner wall, the outside of box (1) lower part is equipped with outlet solenoid valve (13) that are connected with second temperature sensor (12) electricity, is connected with outlet pipe (15) that stretch into in box (1) inner chamber on outlet solenoid valve (13), install in box (1) inner chamber from box (1) top inner wall downwardly extending and a plurality of baffle (2) that the interval set up, install in box (1) inner chamber from box (1) inner wall (1) bottom inner wall (3) and baffle (16) and upper and lower baffle (16) that set up between heat preservation channel and the upper and lower baffle (1), an upper water flowing channel (17) is arranged between the lower baffling heat insulation plate (3) and the inner wall of the top of the box body (1).

2. The steam turbine insulation assembly of claim 1, wherein: the upper portion, the lower portion, the left and right sides portion and the rear portion of the box body (1) are composed of a heat insulation outer shell (101) and a heat insulation inner shell (102), and an aerogel heat insulation layer (103) is arranged between the heat insulation outer shell (101) and the heat insulation inner shell (102).

3. The steam turbine insulation of claim 2, wherein: the inner side of the heat-insulating inner shell (102) is coated with high-temperature-resistant waterproof paint.

4. A steam turbine insulation unit as claimed in claim 3 wherein: the curved surface consists of a heat insulation shell (101), and a fireproof layer (104) is arranged on the opposite outer side surface of the heat insulation shell (101).

5. The steam turbine insulation assembly of claim 4, wherein: the lower part symmetry of box (1) is provided with slide rail (4), slide rail (4) and slide (10) cooperation.

6. The steam turbine insulation assembly of claim 1, wherein: the box body (1) is provided with an electrical control system, and the first temperature sensor (11), the water inlet electromagnetic valve (12), the second temperature sensor (12) and the water outlet electromagnetic valve (13) are respectively and electrically connected with the electrical control system.