CN214330760U

CN214330760U - Leading natural gas heating device of gas turbine

Info

Publication number: CN214330760U
Application number: CN202120294224.3U
Authority: CN
Inventors: 王刚; 罗玮; 曹治国; 王勇
Original assignee: Shenzhen Nanshan Thermal Power Co ltd
Current assignee: Shenzhen Nanshan Thermal Power Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-10-01
Anticipated expiration: 2031-02-02

Abstract

The utility model discloses a leading natural gas heating device of gas turbine, including bottom plate, jar body and trunk line, jar body one side below is fixed with water supply connector, water supply connector has the inlet tube through the ring flange connection, jar body one side top is fixed with the drainage and connects, the drainage connects and is connected with the drain pipe through the ring flange, jar body openly below is fixed with air inlet connection, air inlet connection has the intake pipe through the ring flange connection, jar body top is fixed with the exhaust joint, the exhaust joint has the blast pipe through the ring flange connection, install the heat exchange tube between exhaust joint and the air inlet connection, the heat exchange tube is located the jar internally, the heat exchange tube respectively with exhaust joint and air inlet connection intercommunication. The utility model has the advantages of at the leading station installation natural gas heating device of gas turbine, utilize gas turbine's high temperature internal cooling water heating natural gas, improve the natural gas inlet temperature, reduce internal cooling water temperature degree.

Description

Leading natural gas heating device of gas turbine

Technical Field

The utility model relates to a gas turbine technical field specifically is a leading natural gas heating device of gas turbine.

Background

The gas turbine is an internal combustion type power machine which takes continuously flowing gas as a working medium to drive an impeller to rotate at a high speed and converts the energy of fuel into useful work, and is a rotary impeller type heat engine. In the main flow of air and gas of the gas turbine, only the gas turbine consisting of three parts, namely a compressor, a combustion chamber and a gas turbine, circulates.

In general, natural gas fuel used by a gas turbine is conveyed by a high-pressure pipeline, the pressure is generally 4.0-8.4 Mpa, so that pressure reduction treatment is required before the natural gas fuel enters a gas turbine for power generation, but the temperature of the natural gas is greatly reduced due to pressure reduction, and even the natural gas subjected to pressure reduction in winter in southern China can still be reduced to-10 ℃, so that the power generation requirement cannot be met. Some power plants adopt end station heating systems, but the heating capacity is not ideal, a large amount of equipment investment needs to be increased, and electric quantity is consumed during operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a leading natural gas heating device of gas turbine possesses at leading station installation natural gas heating device of gas turbine, utilizes gas turbine's high temperature internal cooling water heating natural gas, improves the natural gas inlet temperature, reduces the advantage of internal cooling water temperature degree, has solved the natural gas and has got into the problem that the natural gas temperature appears reducing by a wide margin before the gas turbine electricity generation must carry out the step-down processing, step-down leads to the natural gas temperature to appear reducing by a wide margin.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a leading natural gas heating device of gas turbine, includes bottom plate, jar body and trunk line, jar body one side below is fixed with water supply connector, water supply connector has the inlet tube through the ring flange connection, jar body one side top is fixed with the drainage and connects, the drainage connects and is connected with the drain pipe through the ring flange, jar body openly below is fixed with air inlet connector, air inlet connector has the intake pipe through the ring flange connection, jar body top is fixed with exhaust joint, exhaust joint is connected with the blast pipe through the ring flange, install the heat exchange tube between exhaust joint and the air inlet connector.

Preferably, a base is fixed at the bottom end of the tank body and fixedly connected with the bottom plate through bolts.

Preferably, the water inlet joint is communicated with the interior of the tank body, and the water discharge joint is communicated with the interior of the tank body.

Preferably, the exhaust pipe is connected to a main pipeline, and a support is fixed at the bottom of the main pipeline.

Preferably, the heat exchange pipe is positioned in the tank body and is respectively communicated with the exhaust joint and the air inlet joint.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model discloses a set up jar body, water supply connector, drainage joint, admission joint, exhaust joint and heat exchange tube, reached the high temperature internal cooling water heating natural gas who utilizes gas turbine, improve the natural gas inlet temperature, reduce the effect of internal cooling water temperature. The utility model is provided with a tank body, a water inlet joint, a water discharge joint, an air inlet joint, an exhaust joint and a heat exchange tube, wherein the water inlet joint is fixed below one side of the tank body and communicated with the inside of the tank body, and the water inlet joint is connected with a water inlet tube through a flange plate; a water drainage joint is fixed above one side of the tank body and communicated with the inside of the tank body, and the water drainage joint is connected with a water drainage pipe through a flange plate.

An air inlet joint is fixed below the front side of the tank body and is communicated with the inside of the tank body, the air inlet joint is connected with an air inlet pipe through a flange plate, an air outlet joint is fixed at the top end of the tank body and is communicated with the inside of the tank body, the air outlet joint is connected with an air outlet pipe through a flange plate, and the air outlet pipe is connected to a main pipeline; and a heat exchange pipe is arranged between the exhaust joint and the air inlet joint.

High-temperature internal cooling water of the gas turbine enters the tank body from the water inlet joint through the water inlet pipe, the high-temperature internal cooling water is filled in the tank body, natural gas enters the heat exchange pipe from the water inlet joint through the air inlet pipe after pressure reduction, the outer wall of the heat exchange pipe is contacted with the high-temperature internal cooling water in the tank body, the high-temperature internal cooling water exchanges heat with the natural gas in the heat exchange pipe, the natural gas is heated by the high-temperature internal cooling water, the inlet temperature of the natural gas is increased, and the temperature of the internal cooling water is reduced; the cooled internal cooling water is discharged from a drain pipe through a drain joint; the heated natural gas enters the main pipeline from the exhaust pipe through the exhaust joint and is conveyed.

Drawings

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

fig. 2 is a left side view structure diagram of the present invention;

fig. 3 is a schematic view of the internal structure of the tank of the present invention.

In the figure: 1. a base plate; 2. a base; 3. a bolt; 4. a tank body; 5. a water inlet joint; 6. a flange plate; 7. a water inlet pipe; 8. a drain pipe; 9. a water discharge joint; 10. an exhaust joint; 11. an exhaust pipe; 12. a heat exchange pipe; 13. a main pipeline; 14. an air inlet pipe; 15. a support; 16. an air inlet joint.

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. 3, the present invention provides an embodiment: the utility model provides a leading natural gas heating device of gas turbine, includes bottom plate 1, jar body 4 and trunk line 13, and jar body 4 bottom is fixed with base 2, and base 2 passes through bolt 3 and bottom plate 1 fixed connection, and bottom plate 1 is fixed subaerial.

A water inlet joint 5 is fixed below one side of the tank body 4, the water inlet joint 5 is communicated with the inside of the tank body 4, the water inlet joint 5 is connected with a water inlet pipe 7 through a flange plate 6, and the water inlet pipe 7 is connected with an outlet of high-temperature cooling water of the gas turbine. A water discharge joint 9 is fixed above one side of the tank body 4, the water discharge joint 9 is communicated with the inside of the tank body 4, the water discharge joint 9 is connected with a water discharge pipe 8 through a flange 6, and the water discharge pipe 8 is connected with a secondary cooling device of external cooling water. An air inlet joint 16 is fixed below the front surface of the tank body 4, the air inlet joint 16 is connected with an air inlet pipe 14 through a flange 6, and the air inlet pipe 14 is connected with a conveying pipeline for natural gas after depressurization. An exhaust joint 10 is fixed at the top end of the tank body 4, the exhaust joint 10 is connected with an exhaust pipe 11 through a flange 6, a heat exchange pipe 12 is installed between the exhaust joint 10 and an air inlet joint 16, the heat exchange pipe 12 is located in the tank body 4, and the heat exchange pipe 12 is respectively communicated with the exhaust joint 10 and the air inlet joint 16. High-temperature internal cooling water of the gas turbine enters the tank body 4 from the water inlet joint 5 through the water inlet pipe 7, the tank body 4 is filled with the high-temperature internal cooling water, natural gas enters the heat exchange pipe 12 from the air inlet joint 16 through the air inlet pipe 14 after pressure reduction, the outer wall of the heat exchange pipe 12 is contacted with the high-temperature internal cooling water in the tank body 4, the high-temperature internal cooling water exchanges heat with the natural gas in the heat exchange pipe 12, the natural gas is heated by the high-temperature internal cooling water, the inlet temperature of the natural gas is increased, and the temperature of the internal cooling water is reduced; the cooled internal cooling water is discharged from the drain pipe 8 through the drain joint 9.

The exhaust pipe 11 is connected to a main pipe 13, heated natural gas enters the main pipe 13 from the exhaust pipe 11 through an exhaust joint 10 to be conveyed, and a support 15 is fixed at the bottom of the main pipe 13.

The heat exchange area of the equipment is 66.4 square meters, the volume is 1.9 cubic meters, the inner diameter is 900 millimeters, the wall thickness is 10 millimeters, and the height is 5018 millimeters; the main material of the tank body 4 can be made of 20R, the design pressure of the tank body 4 is 1.0Mpa, the design temperature is 60 ℃, and the working medium is water; the main material of the heat exchange tube 12 is made of SUS321, the design pressure is 3.2Mpa, the design temperature is-10/50 ℃, the working medium is natural gas, the highest working pressure is 2.5Mpa, and the pressure resistance test pressure is 4.0 Mpa.

The working principle is as follows: high-temperature internal cooling water of the gas turbine enters the tank body 4 from the water inlet joint 5 through the water inlet pipe 7, the tank body 4 is filled with the high-temperature internal cooling water, natural gas enters the heat exchange pipe 12 from the air inlet joint 16 through the air inlet pipe 14 after pressure reduction, the outer wall of the heat exchange pipe 12 is contacted with the high-temperature internal cooling water in the tank body 4, the high-temperature internal cooling water exchanges heat with the natural gas in the heat exchange pipe 12, the natural gas is heated by the high-temperature internal cooling water, the inlet temperature of the natural gas is increased, and the temperature of the internal cooling water is reduced; the cooled internal cooling water is discharged from the drain pipe 8 through the drain joint 9; the heated natural gas enters the main pipeline 13 from the exhaust pipe 11 through the exhaust joint 10 and is conveyed.

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 a leading natural gas heating device of gas turbine, includes bottom plate (1), jar body (4) and trunk line (13), its characterized in that: the utility model discloses a water tank, including the jar body (4), jar body (4) one side below is fixed with water supply connector (5), water supply connector (5) are connected with inlet tube (7) through ring flange (6), jar body (4) one side top is fixed with drainage joint (9), drainage joint (9) are connected with drain pipe (8) through ring flange (6), jar body (4) openly below is fixed with air inlet connector (16), air inlet connector (16) are connected with intake pipe (14) through ring flange (6), jar body (4) top is fixed with exhaust joint (10), exhaust joint (10) are connected with blast pipe (11) through ring flange (6), install heat exchange tube (12) between exhaust joint (10) and air inlet connector (16).

2. The gas turbine front natural gas heating apparatus according to claim 1, characterized in that: the bottom end of the tank body (4) is fixed with a base (2), and the base (2) is fixedly connected with the bottom plate (1) through a bolt (3).

3. The gas turbine front natural gas heating apparatus according to claim 1, characterized in that: the water inlet joint (5) is communicated with the inside of the tank body (4), and the water discharge joint (9) is communicated with the inside of the tank body (4).

4. The gas turbine front natural gas heating apparatus according to claim 1, characterized in that: the exhaust pipe (11) is connected to a main pipe (13), and a support (15) is fixed at the bottom of the main pipe (13).

5. The gas turbine front natural gas heating apparatus according to claim 1, characterized in that: the heat exchange pipe (12) is positioned in the tank body (4), and the heat exchange pipe (12) is respectively communicated with the exhaust joint (10) and the air inlet joint (16).