CN214330759U

CN214330759U - Air duct between load couplings of gas turbine

Info

Publication number: CN214330759U
Application number: CN202120216429.XU
Authority: CN
Inventors: 陈天晟; 陈晖�; 徐砚伟
Original assignee: Shenzhen Nanshan Thermal Power Co ltd
Current assignee: Shenzhen Nanshan Thermal Power Co ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-10-01
Anticipated expiration: 2031-01-26

Abstract

The utility model discloses a wind channel between gas turbine load coupling, including cavity, cooling duct, Y type pipeline and main shaft, the outer wall lower extreme welding of cavity has the installation piece, the activity is pegged graft on the installation piece and is had the installation nail, and the upper surface of cavity is equipped with the mount pad, upper surface one side of mount pad is fixed with first blast pipe, the upper surface opposite side of mount pad is fixed with the second blast pipe, the upper surface intermediate position department of mount pad is fixed with cooling duct, wallboard between the side load has all been laid to four side inner walls of cavity, wallboard between the upper load has been laid on the inner wall top of cavity, the gaseous water conservancy diversion riser is installed through the bolt symmetry on the inner wall top of cavity. The utility model discloses, compact structure, it is convenient to use, gives control from the heat source, reduces the temperature between the load coupling, prolongs the life of each system of unit, guarantees unit safe operation simultaneously.

Description

Air duct between load couplings of gas turbine

Technical Field

The utility model relates to a gas turbine heat dissipation annex technical field specifically is a wind channel between gas turbine load coupling.

Background

The gas turbine is a rotary impeller type heat engine, and in the main flow of air and gas, the gas turbine only has a gas turbine cycle consisting of three parts, namely a gas compressor, a combustion chamber and a gas turbine, which is generally called as a simple cycle, and most of the gas turbines adopt a simple cycle scheme.

The gas turbine load coupling chamber is positioned in a gas turbine exhaust high-temperature section, the temperature in a space is high, forced blast cooling is carried out by two fans arranged at the top of the load coupling chamber in the original design, under the condition of no defect, heat sources between the load coupling chambers mainly comprise three parts, hot air after a turbine frame cooling fan cools a cylinder body is directly exhausted into the load coupling chamber through a turbine exhaust inner cylinder exhaust hole, heat conduction of a heat insulation layer behind an exhaust chamber is carried out, heat conduction of a turbine exhaust cylinder and an exhaust diffuser is carried out, and along with the increase of the number of times of unit overhaul, exhaust smoke caused by poor sealing property directly leaks into the load coupling chamber to cause obvious increase of the space temperature.

High-temperature gas between the load couplings can be axially connected in series into the generator room through the load couplings, the unbalance amount of the hot end of the generator can be further influenced when smoke leakage is serious, the generator tile vibration can be obviously increased along with the increase of the temperature of the exhaust end in the process of unit load, the return oil temperature of the gas turbine can be increased, the aging rate of the lubricating oil of the gas turbine is accelerated, the service life of the lubricating oil is shortened, and the safe and reliable operation of the whole lubricating oil system can be even influenced when the lubricating oil is serious. The exhaust thermocouple is affected by high temperature and is easy to break down, and the thermal control junction box is also arranged on the surface of the outer wall between the load couplings, so that the multi-point exhaust smoke temperature measurement fault can be caused when the thermal control junction box is serious, and the unit is tripped.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind channel between gas turbine load coupling possesses compact structure, and it is convenient to use, gives control from the heat source, reduces the temperature between the load coupling, prolongs the life of each system of unit, guarantees the advantage of unit safe operation simultaneously, solves the not good problem of heat dissipation between the gas turbine load coupling.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a wind channel between gas turbine load coupling, includes cavity, cooling duct, Y type pipeline and main shaft, the outer wall lower extreme welding of cavity has the installation piece, the activity is pegged graft on the installation piece and is had the installation nail, and the upper surface of cavity is equipped with the mount pad, upper surface one side of mount pad is fixed with first blast pipe, the upper surface opposite side of mount pad is fixed with the second blast pipe, the upper surface intermediate position department of mount pad is fixed with cooling duct, wallboard between the side load has all been laid to four side inner walls of cavity, wallboard between the upper load has been laid on the inner wall top of cavity, gaseous water conservancy diversion riser is installed through the bolt symmetry on the inner wall top of cavity.

Preferably, the mounting block is provided with a mounting hole matched with the mounting nail, and the mounting nail is movably inserted in the mounting hole.

Preferably, the main shaft is located at the bottom end of the inner wall of the chamber, the main shaft is located right below the gas guide vertical plate, and the gas guide vertical plate is located right below the cooling air duct.

Preferably, the lower ends of the first exhaust pipe, the cooling air duct and the second exhaust pipe are all provided with channel valves.

Preferably, the bottom end of the Y-shaped pipeline is fixed on the second exhaust pipe, and a round head is fixed at the top end of the Y-shaped pipeline.

Preferably, the number of the mounting nails is four, and the four mounting nails are distributed in a rectangular array relative to the cavity.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses gas turbine load inter-coupling wind channel is in the use, accessible installation nail the device to be fixed in assigned position department, through changing original runner, optimize cooling ventilation effect, reach the purpose of reducing load inter-coupling temperature, arrange the cooling wind channel entry directly over the main shaft, set up gaseous water conservancy diversion riser drainage in the both sides of main shaft, and then stabilize pressure head and velocity of flow through the water conservancy diversion, make the hot-blast after mixing arrange the exhaust duct of both sides from the top smoothly and discharge, thereby reach the purpose of cooling, through the design of Y type pipeline, increase and discharge the tube head, load inter-coupling temperature obviously reduces after the transformation, greatly improved the security and the economic nature of unit operation, the utility model discloses, compact structure, it is convenient to use, give control from the heat source, reduce load inter-coupling temperature, prolong the life of each system of unit, and meanwhile, the safe operation of the unit is ensured.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic side view of the present invention.

In the figure: 1. mounting blocks; 2. a side load compartment wall panel; 3. a chamber; 4. a mounting seat; 5. a first exhaust pipe; 6. a cooling air duct; 7. a Y-shaped pipeline; 8. a round head; 9. a second exhaust pipe; 10. loading the load compartment wall plate; 11. a gas guide vertical plate; 12. a main shaft; 13. and (6) installing the nail.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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 description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; 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 in specific cases to those skilled in the art.

Referring to fig. 1 to fig. 2, the present invention provides an embodiment: the utility model provides an wind channel between gas turbine load coupling, including cavity 3, cooling duct 6, Y type pipeline 7 and main shaft 12, the welding of the outer wall lower extreme of cavity 3 has installation piece 1, the activity is pegged graft on installation piece 1 has installation nail 13, set up the mounting hole with installation nail 13 looks adaptation on the installation piece 1, installation nail 13 activity is pegged graft in the mounting hole, installation nail 13 is totally four, four installation nails 13 are the rectangular array for cavity 3 and distribute, accessible installation nail 13 the device is fixed in assigned position department.

The upper surface of cavity 3 is equipped with mount pad 4, and upper surface one side of mount pad 4 is fixed with first blast pipe 5, and the upper surface opposite side of mount pad 4 is fixed with second blast pipe 9, and the upper surface intermediate position department of mount pad 4 is fixed with cooling duct 6, and the lower extreme of first blast pipe 5, cooling duct 6 and second blast pipe 9 all is equipped with the passageway valve, through changing original runner, optimizes the cooling ventilation effect, reaches the purpose that reduces the inter-axle temperature of load.

Wallboard 2 between side load has all been laid to the four side inner walls of cavity 3, wallboard 10 between the upper load has been laid on the inner wall top of cavity 3, gaseous water conservancy diversion riser 11 is installed through the bolt symmetry on the inner wall top of cavity 3, main shaft 12 is located cavity 3's inner wall bottom, main shaft 12 is located gaseous water conservancy diversion riser 11 under, gaseous water conservancy diversion riser 11 is located cooling duct 6 under, arrange cooling duct 6 entry directly over main shaft 12, both sides at main shaft 12 set up gaseous water conservancy diversion riser 11 drainage, and then stabilize pressure head and velocity of flow through the water conservancy diversion, make the hot-blast exhaust duct who arranges in both sides smoothly of following the top of mixing discharge, thereby reach the purpose of cooling.

The bottom mounting of Y type pipeline 7 is on second blast pipe 9, and the top of Y type pipeline 7 is fixed with button head 8, through the design of Y type pipeline 7, increases and discharges the tube head, and the temperature obviously reduces between the transformation afterload shaft coupling, has greatly improved the security and the economic nature of unit operation, the utility model discloses, compact structure, it is convenient to use, gives control from the heat source, reduces the temperature between the load shaft coupling, prolongs the life of each system of unit, guarantees unit safe operation simultaneously.

The working principle is as follows: the utility model discloses wind channel is in the use between gas turbine load shaft coupling, 13 the device of accessible installation nail is fixed in assigned position department, through changing original runner, optimize the cooling ventilation effect, reach the purpose that reduces the temperature between the load shaft coupling, arrange 6 entries in the cooling duct directly over main shaft 12, set up gaseous water conservancy diversion riser 11 drainage in the both sides of main shaft 12, and then stabilize pressure head and velocity of flow through the water conservancy diversion, make the hot-blast exhaust duct who arranges in both sides smoothly of arranging from the top after mixing discharge, thereby reach the purpose of cooling, design through Y type pipeline 7, increase and discharge the tube head, it obviously reduces to reform transform the temperature between the load shaft coupling, the security and the economic nature of unit operation have greatly been improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an wind channel between gas turbine load coupling, includes cavity (3), cooling duct (6), Y type pipeline (7) and main shaft (12), its characterized in that: the utility model discloses a wall structure, including cavity (3), installation piece (1), installation nail (13) have been pegged graft to the outer wall lower extreme welding of cavity (3), and the upper surface of cavity (3) is equipped with mount pad (4), upper surface one side of mount pad (4) is fixed with first blast pipe (5), the upper surface opposite side of mount pad (4) is fixed with second blast pipe (9), the upper surface intermediate position department of mount pad (4) is fixed with cooling duct (6), wallboard (2) between side load have all been laid to four side inner walls of cavity (3), wallboard (10) between the upper load have been laid on the inner wall top of cavity (3), gaseous water conservancy diversion riser (11) are installed through the bolt symmetry on the inner wall top of cavity (3).

2. The gas turbine load coupling air duct of claim 1, wherein: the mounting block (1) is provided with a mounting hole matched with the mounting nail (13), and the mounting nail (13) is movably inserted in the mounting hole.

3. The gas turbine load coupling air duct of claim 1, wherein: the main shaft (12) is located at the bottom end of the inner wall of the cavity (3), the main shaft (12) is located under the gas guide vertical plate (11), and the gas guide vertical plate (11) is located under the cooling air duct (6).

4. The gas turbine load coupling air duct of claim 1, wherein: and the lower ends of the first exhaust pipe (5), the cooling air duct (6) and the second exhaust pipe (9) are provided with channel valves.

5. The gas turbine load coupling air duct of claim 1, wherein: the bottom end of the Y-shaped pipeline (7) is fixed on the second exhaust pipe (9), and the top end of the Y-shaped pipeline (7) is fixed with a round head (8).

6. The gas turbine load coupling air duct of claim 1, wherein: the number of the mounting nails (13) is four, and the four mounting nails (13) are distributed in a rectangular array relative to the chamber (3).