CN215639556U - Novel gas and steam combined cycle power plant centralized monitoring device - Google Patents

Abstract

The utility model discloses a novel centralized monitoring device of a gas-steam combined cycle power plant, which comprises a steam turbine unit, wherein a feeding port of the steam turbine unit is communicated with a heating part through a high-pressure steam pipeline, a discharging port of the steam turbine unit is communicated with the heating part through a water supply pipeline, a water supplementing part and a pumping part are sequentially arranged on the water supply pipeline along the water flow direction, a fuel conveying pipe for conveying gas is arranged on the heating part, and pressure detectors for detecting the tightness of the pipeline are arranged on the high-pressure steam pipeline, the water supply pipeline and the fuel conveying pipe. In the utility model, in order to keep the stable operation of the high-pressure steam pipeline and the water supply pipeline, the pressure detector is arranged on the pipeline to detect the pressure in the pipeline in real time, and the number of the pressure detectors can be multiple.

Description

Novel gas and steam combined cycle power plant centralized monitoring device

Technical Field

The utility model relates to the field of power generation monitoring devices, in particular to a novel centralized monitoring device for a gas-steam combined cycle power plant.

Background

With the continuous and rapid development of economy, the demand for energy is increasing, and the use of traditional fossil fuels also brings about severe resources. Environmental pressure, with traditional fossil fuels as the primary energy source supply, is not sustainable.

In order to reduce the pollution to the environment, part of power plants adopt fuel gas to generate electricity, and the fuel gas is cleaner on the one hand, and the fuel gas is renewable resources on the other hand, and is less dependent on the natural environment. However, in order to improve the utilization efficiency of the fuel gas, power generation is generally performed by a fuel gas-steam combined cycle. However, the requirement of the gas and the steam on the equipment is high in the using process, once the sealing defect occurs, an immeasurable loss is brought, and therefore, the centralized monitoring is particularly important.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel centralized monitoring device for a gas-steam combined cycle power plant, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a novel gas steam combined cycle power plant centralized monitoring device, includes the turboset, the turboset inlet port passes through high-pressure steam pipeline and heating portion intercommunication, the exit port of turboset passes through supply channel and heating portion intercommunication, be equipped with moisturizing portion and pumping department along the rivers direction on the supply channel in proper order, be equipped with the fuel delivery pipe who carries the gas on the heating portion, all be equipped with the pressure detector who is used for detecting the pipeline seal nature on high-pressure steam pipeline, supply channel and the fuel delivery pipe.

Further, moisturizing portion includes the moisturizing box, the inboard lower part of moisturizing box is equipped with the baffle, and the baffle separates into first cavity and second cavity with the moisturizing box.

Furthermore, the water supply pipeline comprises a first branch pipe and a second branch pipe, the second chamber is communicated with a discharge port of the steam turbine set through the first branch pipe, the first chamber is communicated with a feed port of the second branch pipe, and the pumping part is located on the second branch pipe.

Further, the discharge port of the first branch pipe is communicated with an aeration head on the inner bottom surface of the second chamber.

Furthermore, the middle part of the inner side of the second cavity is provided with an air guide cover with a hollow structure, and the air guide cover is of a conical structure.

Furthermore, a wet curtain is arranged at the top end of the inner side of the second chamber, the wet curtain corresponds to a spray head above the wet curtain, and the spray head is communicated with a discharge port of a supply pipe penetrating through the water supply tank body.

Furthermore, a control valve body and a flow sensor are arranged on the supply pipe.

Further, the feed port of the second branch pipe is communicated with the bottom of the first chamber.

Furthermore, a water level meter is arranged in the first chamber and on the side far away from the partition plate.

Further, the bottom end of the water level gauge is positioned at the lower part of the inner side of the first chamber, and the top end of the water level gauge is positioned above the top end of the partition plate.

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

in the utility model, in order to keep the stable operation of the high-pressure steam pipeline and the water supply pipeline, the pressure detector is arranged on the pipeline to detect the pressure in the pipeline in real time, and the number of the pressure detectors can be multiple. In addition, when high-temperature steam acts on the steam turbine set, partial steam loss exists, therefore, water needs to be continuously supplied to a water supply pipeline in the actual working process, the water supply cannot be too much or too little, the heating part cannot sufficiently heat water, the too little heat energy generated by the heating part is wasted, the steam acts on the steam turbine set, the efficiency of converting the heat energy into mechanical energy is low, and therefore a monitoring device is also arranged inside the water supply part to realize gas-steam combined cycle power generation.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a novel centralized monitoring device of a gas-steam combined cycle power plant;

fig. 2 is a schematic structural diagram of a water supply part in a novel centralized monitoring device of a gas-steam combined cycle power plant.

In the figure: 1. a steam turbine unit; 2. a high pressure steam line; 3. a heating section; 4. a water supply line; 41. a first branch pipe; 42. a second branch pipe; 5. a water supply part; 51. a water replenishing tank body; 52. a partition plate; 53. a first chamber; 54. a second chamber; 55. an aeration head; 56. a gas guide hood; 57. wet curtain; 58. a spray head; 59. a supply pipe; 60. a control valve body; 61. a flow sensor; 62. a water level gauge; 6. a pumping section; 7. a fuel delivery pipe; 8. a pressure detector.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution:

the utility model provides a novel gas steam combined cycle power plant centralized monitoring device, including turboset 1, 1 feed port of turboset passes through high-pressure steam pipe way 2 and heating portion 3 intercommunication, the exit port of turboset 1 passes through supply channel 4 and heating portion 3 intercommunication, supply channel 4 is gone up and is equipped with moisturizing portion 5 and pumping unit 6 along the rivers direction in proper order, be equipped with the fuel delivery pipe 7 of carrying the gas on the heating portion 3, high-pressure steam pipe way 2, all be equipped with on supply channel 4 and the fuel delivery pipe 7 and be used for detecting the airtight pressure detector 8 of pipeline.

In order to maintain stable operation of the high pressure steam line 2 and the water supply line 4, the number of the pressure detectors 8 may be plural by providing the pressure detectors 8 on the lines to detect the pressure inside the lines in real time. In addition, when high-temperature steam acts on the steam turbine set 1, partial steam loss exists, therefore, continuous water supply is needed in the water supply pipeline 4 in the actual working process, the water supply cannot be too much or too little, the heating part 3 heats water insufficiently, the too little heat energy generated by the heating part 3 is wasted, the steam acts on the steam turbine set 1, the efficiency of converting the heat energy into mechanical energy is low, and therefore a monitoring device is also arranged inside the water replenishing part 5 to realize gas-steam combined cycle power generation.

Wherein, moisturizing portion 5 includes moisturizing box 51, and the inboard lower part of moisturizing box 51 is equipped with baffle 52, and baffle 52 separates into first cavity 53 and second cavity 54 with moisturizing box 51, and baffle 52 separates moisturizing box 51 into even part, and second cavity 54 is used for carrying out intensive mixing with the cold water of supplementary with the residual gas after promoting turboset 1 work to improve the temperature of cold water, and the steam liquefaction also is convenient for pumping portion 6 to pump simultaneously.

The water supply line 4 includes a first branch line 41 and a second branch line 42, the second chamber 54 communicates with the discharge port of the turboset 1 through the first branch line 41, the first chamber 53 communicates with the feed port of the second branch line 42, and the pumping part 6 is located on the second branch line 42, so that the steam is delivered to the second chamber 54, and the steam is liquefied to flow to the first chamber 53 and is sent out through the second branch line 42 to form a passage.

The discharge port of the first branch pipe 41 is communicated with an aeration head 55 at the inner bottom surface of the second chamber 54, and the aeration head 55 is used for sending steam into the second chamber 54, dispersing the steam to be in quick contact with cold water so as to realize the effect of temperature reduction and liquefaction, and then enabling the steam to flow through the partition plate 52 to enter the first chamber 53.

The middle part of the inner side of the second chamber 54 is provided with a hollow-out air guide cover 56, and the air guide cover 56 is a conical air guide cover 56, so that the contact time of high-temperature steam and cold water is further prolonged, and the temperature of the high-temperature steam and the cold water is reduced.

The top end of the inner side of the second chamber 54 is provided with a wet curtain 57, the wet curtain 57 corresponds to the position of an upper spray head 58, the spray head 58 is communicated with a discharge port of a supply pipe 59 penetrating through the water supply tank body 51, bubbles penetrating through the water surface are finally restrained through the wet curtain 57, and meanwhile, the steam is finally cooled and liquefied.

The supply pipe 59 is provided with a control valve body 60 and a flow sensor 61, the control valve body 60 is used for controlling the opening or closing of the supply pipe 59, and the flow sensor 61 is used for detecting the amount of water fed into the water supply tank body 51 by the supply pipe 59.

The feed port of the second branch 42 communicates with the bottom of the first chamber 53, thus enabling the delivery of make-up water.

A water level gauge 62 is arranged on the inner part of the first chamber 53 at the side far away from the partition plate 52, the water level gauge 62 is used for measuring the water storage amount in the first chamber 53, and the steam circulation is affected by too high or too low.

The bottom end of the water level gauge 62 is positioned at the lower part of the inner side of the first chamber 53, the top end of the water level gauge 62 is positioned above the top end of the partition plate 52, and once the water level is lower than the lower end of the water level gauge 62, the water supply level is too low; if the water level exceeds the upper end of the water level, the supply of the make-up water is excessive, and proper regulation and control are required.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which includes the appended claims and their equivalents.

Claims (10)

1. The utility model provides a novel gas steam combined cycle power plant centralized monitoring device, includes turboset (1), its characterized in that: steam turbine set (1) inlet port passes through high-pressure steam pipeline (2) and heating portion (3) intercommunication, the outlet port of steam turbine set (1) passes through supply channel (4) and heating portion (3) intercommunication, be equipped with moisturizing portion (5) and pumping department (6) along the rivers direction in proper order on supply channel (4), be equipped with fuel delivery pipe (7) of carrying the gas on heating portion (3), all be equipped with on high-pressure steam pipeline (2), supply channel (4) and fuel delivery pipe (7) and be used for detecting pressure detector (8) of pipeline seal nature.

2. The novel centralized monitoring device for a gas-steam combined cycle power plant as claimed in claim 1, wherein: the water supply part (5) comprises a water supply tank body (51), a partition plate (52) is arranged on the lower portion of the inner side of the water supply tank body (51), and the partition plate (52) separates the water supply tank body (51) into a first cavity (53) and a second cavity (54).

3. The novel centralized monitoring device for a gas-steam combined cycle power plant as claimed in claim 2, wherein: the water supply pipeline (4) comprises a first branch pipe (41) and a second branch pipe (42), the second chamber (54) is communicated with a discharge port of the steam turbine unit (1) through the first branch pipe (41), the first chamber (53) is communicated with a feed port of the second branch pipe (42), and the pumping part (6) is located on the second branch pipe (42).

4. The novel centralized monitoring device for a gas-steam combined cycle power plant as claimed in claim 3, wherein: the discharge port of the first branch pipe (41) is communicated with an aeration head (55) on the inner bottom surface of the second chamber (54).

5. The novel centralized monitoring device for a gas-steam combined cycle power plant as claimed in claim 4, wherein: the middle part of the inner side of the second cavity (54) is provided with an air guide cover (56) with a hollow structure, and the air guide cover (56) is of a conical structure.

6. The novel centralized monitoring device for a gas-steam combined cycle power plant as claimed in claim 5, wherein: a wet curtain (57) is arranged at the top end of the inner side of the second chamber (54), the wet curtain (57) corresponds to a spray head (58) above, and the spray head (58) is communicated with a discharge port of a supply pipe (59) penetrating through the water supply tank body (51).

7. The novel centralized monitoring device for a gas-steam combined cycle power plant as claimed in claim 6, wherein: and a control valve body (60) and a flow sensor (61) are arranged on the supply pipe (59).

8. The novel centralized monitoring device for a gas-steam combined cycle power plant as claimed in claim 7, wherein: the inlet port of the second branch (42) communicates with the bottom of the first chamber (53).

9. The novel centralized monitoring device for a gas-steam combined cycle power plant of claim 8, wherein: a water level gauge (62) is arranged on the inner part of the first chamber (53) on the side far away from the partition plate (52).

10. The novel centralized monitoring device for a gas-steam combined cycle power plant of claim 9, wherein: the bottom end of the water level gauge (62) is positioned at the lower part of the inner side of the first chamber (53), and the top end of the water level gauge (62) is positioned above the top end of the clapboard (52).

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