Movable gas turbine generator set exhaust device

Abstract

The utility model relates to the technical field of movable gas turbine generator sets, in particular to an exhaust device of a movable gas turbine generator set, which comprises a cabin body, a gas turbine and an exhaust device arranged on one side of the gas turbine and inside the cabin body. And the exhaust device is used for silencing high-temperature flue gas exhausted by the gas turbine and exhausting the high-temperature flue gas to the atmospheric environment. According to the movable type gas turbine generator set exhaust device, on the premise that the space is limited, exhaust noise is effectively absorbed, and the noise emission limit is met; meanwhile, high-temperature exhaust is prevented from being sucked in by the air inlet module, and the air inlet temperature is prevented from being increased. Meanwhile, a mechanical limiting scheme is provided to prevent mechanical faults, and a control logic scheme is provided to prevent misoperation.

Description

TECHNICAL FIELD

[0001] The utility model relates to mobile gas turbine generator set technical field, specifically, relate to a mobile gas turbine generator set exhaust device. BACKGROUND

[0002] In distributed photovoltaic, wind power or chemical projects, there will be hydrogen production and hydrogen storage, or ammonia production and ammonia storage, and other green fuel energy storage links. When peak shaving power generation is needed, gas turbines need to burn such energy storage fuels to supply power to the power grid. For this intermittent power supply mode, using mobile gas turbine generator sets can improve equipment utilization and reduce operating costs.

[0003] For mobile gas turbine generator sets, road transportation limits are imposed, and the overall size and weight of the whole machine cannot meet the requirements of high-power units. The gas turbine needs to filter and soundproof the intake air and soundproof the high-temperature exhaust gas during operation. The greater the power of the equipment, the more the intake and exhaust treatment capacity, and the greater the space requirement. Currently, the maximum power of a single mobile gas turbine generator set in the industry is 6MW. If the system is divided into multiple modules and transported to the site for installation by multiple vehicles, it will inevitably increase the complexity of the equipment and reduce the work efficiency. If the size of the intake and exhaust treatment module is reduced according to the prior art, the noise will exceed the standard. And the high-temperature exhaust gas is very close to the intake air, which is easily sucked into the intake module, increasing the intake air temperature and reducing the performance of the gas turbine, endangering the safe operation of the equipment. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the prior art's insufficient, provide a kind of exhaust structure, high-power gas turbine generator set is integrated in a vehicle, meet the technical requirements of gas turbine exhaust simultaneously.

[0005] To achieve the above object, the utility model provides a kind of mobile gas turbine generator set exhaust device, including cabin body and gas turbine, further including:

[0006] Exhaust device, the exhaust device is arranged at the side of the gas turbine, and the exhaust device is arranged in the cabin body, and the exhaust device is used to exhaust high-temperature flue gas of the gas turbine to the atmospheric environment after soundproofing;

[0007] The exhaust device includes upper exhaust device and main exhaust device, the upper exhaust device is nested in the main exhaust device in non-working state, the upper exhaust device is lifted by actuating mechanism in working state, the actuating mechanism is arranged at the outer circumferential side of the main exhaust device, and the actuating mechanism is connected with the upper exhaust device.

[0008] Preferably, the upper exhaust device comprises a protective cover arranged on the top of the upper exhaust device, and the protective cover is fixedly connected with the cabin body, and the protective cover is translated to the front direction through a connecting rod mechanism before the exhaust device operates.

[0009] Preferably, the connecting rod mechanism comprises a lead screw and a guide rail, and the lead screw and the guide rail are arranged on the upper surface of the upper exhaust device, and a fixing frame is arranged between the lead screw and the guide rail, and the fixing frame is in communication with the lead screw and the guide rail and drives the protective cover to move in the horizontal direction.

[0010] Preferably, the actuator is fixedly connected with a bracket, one end of the bracket is fixedly arranged on the outer surface of the main exhaust device, the other end of the bracket is fixedly connected with the upper exhaust device, and the actuator is used for driving the bracket to move and lifting the upper exhaust device.

[0011] Preferably, a slide is arranged on the outer side of the upper exhaust device in the vertical direction, and a thrust pin is arranged in the slide, and the thrust pin is used for preventing the upper exhaust device from descending.

[0012] Preferably, the upper exhaust device comprises a sheet-type silencer arranged on the front and rear sides, the sheet-type silencer surrounds a frame structure, a plurality of sound-absorbing plates are arranged in the upper exhaust device, a heat insulation layer is arranged on the inner side wall of the left and right ends of the upper exhaust device, and the sheet-type silencer and the heat insulation layer surround a frame structure.

[0013] Preferably, a plurality of rotatable steel plates are arranged on the outer side of the upper exhaust device, the rotatable steel plates can rotate around the connection between the rotatable steel plates and the upper exhaust device, and can be locked at a required position.

[0014] Preferably, the trailer chassis and the supporting mechanism are arranged on the bottom of the cabin body, and the trailer chassis and the supporting mechanism are used for bearing the whole unit.

[0015] Compared with the prior art, the technical scheme has the following beneficial effects: the mobile gas turbine generator set exhaust device effectively absorbs exhaust noise under the premise of limited space, meets the noise emission limit value, prevents high-temperature exhaust gas from being sucked into the intake module, avoids the increase of the intake temperature, proposes a mechanical limiting scheme to prevent mechanical failure, and proposes a control logic scheme to prevent operation errors. BRIEF DESCRIPTION OF DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings:

[0017] Figure 1 It is the overall structure schematic view of mobile gas turbine generator set of the utility model;

[0018] Figure 2 It is the partial enlarged view of protective cover structure of the utility model;

[0019] Figure 3 It is the schematic view of exhaust device before lifting of the utility model;

[0020] Figure 4 It is the schematic view of exhaust device after lifting of the utility model;

[0021] Figure 5 It is the schematic view of rotatable steel plate after standing of the utility model;

[0022] Figure 6 It is the schematic view of exhaust lifting control logic of the utility model;

[0023] Figure 7 It is the schematic view of exhaust device descending reset control logic of the utility model;

[0024] In the drawing: 1. cabin body, 2. trailer chassis and support mechanism, 3. gas turbine, 4. gear box, 5. generator, 6. gas turbine intake treatment module, 7. cabin body ventilation intake treatment module, 8. exhaust device, 9. lubricating oil module, 10. fuel module, 11. electric control cabin, 12. exhaust device, 13. lead screw, 14. guide rail, 15. fixed frame, 16. protective cover, 17. actuating mechanism, 18. bracket, 19. upper exhaust device, 20. heat insulation layer, 21. sound absorption board, 22. sheet silencer, 23. rotatable steel plate, 24. thrust pin, 25. main exhaust device. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described and discussed clearly and completely in combination with the drawings of the utility model, obviously, only part of examples of the utility model are described here, not all examples, based on the embodiments in the utility model, all other examples obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0026] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] See Figures 1 to 5 As attached Figure 1 As shown, a mobile gas turbine generator set consists of several parts: 1. a protective and soundproof cabin and fire protection system; 2. a semi-trailer chassis and support system; 3. a gas turbine; 4. a gearbox; 5. a generator; 6. a gas turbine intake module; 7. a cabin ventilation and intake module; 8. a gas turbine exhaust module; 9. a lubricating oil module; 10. a fuel module; and 11. an electrical control room. This utility model invention relates to the structural layout of the above-mentioned unit, as well as the design of the cabin and exhaust module.

[0029] The gas turbine converts fuel thermal energy into rotational kinetic energy. The gearbox adjusts the gas turbine speed to the generator speed and provides auxiliary drives for the main oil pump, starter, etc. The generator converts rotational kinetic energy into electrical energy. The cabin reduces equipment noise and provides forced ventilation to prevent the surrounding area from heating up and to dilute any leaked gas. The semi-trailer chassis carries the entire unit and is equipped with a hydraulic support mechanism to provide rigid support during operation. The gas intake module filters and silences the gas turbine intake air. The exhaust module silences the high-temperature flue gas before releasing it into the atmosphere. The lubricating oil module provides constant-temperature, constant-pressure, and clean circulating lubricating oil for the main equipment. The fuel module processes the fuel and controls the fuel quantity. The electrical control room is equipped with electrical cabinets and control cabinets.

[0030] As attached Figure 2 As shown, the exhaust mechanism has a protective cover, and the protective cover has a linkage mechanism. During equipment transportation and storage, the protective cover is closed. Before the equipment is operated, the protective cover moves horizontally towards the front of the vehicle, exposing the exhaust device. The linkage mechanism can be driven by a motor, or by a hydraulic piston, pneumatic cylinder, etc.

[0031] As attachedFigure 3 , 4, 5, the exhaust device is a nested structure, the outer layer is connected with a lifting mechanism, after pressing the button, the lifting mechanism lifts the outer layer silencer upward. The lifting mechanism can use a hydraulic piston rod, or an electric screw or a pneumatic cylinder structure. The outer layer silencer frame is provided with a slide way around, the slide way has a mechanical thrust pin inside, preventing the exhaust silencer from falling when the lifting mechanism fails. The starting point and the end point of the slide way are respectively provided with mechanical limit switches, for feeding the position state of the outer layer exhaust module to the control system. The position switch can also use a non-contact inductive switch. The side of the vehicle body is provided with an operation button and an indicator light, for operating and protecting the exhaust device. The outer layer exhaust device has a heat insulation design, and has a perforated sound absorption plate and a sheet silencer inside, further absorbing noise. The outer layer of the exhaust device is provided with a rotatable steel plate around, the rotating shaft is provided with a ratchet mechanism, when further increasing the exhaust height is needed, the steel plate around can be rotated and erected, so as to increase the exhaust height.

[0032] It should be noted that the exhaust device includes a main exhaust device and an upper lifting part, which is not limited to be connected with the exhaust side of the gas turbine. It is also applicable to an independent exhaust module with a deformation function, which is connected with various devices requiring exhaust silencing, such as a gas turbine, an internal combustion engine and other power equipment. The actuator of the shroud and the upper exhaust device can be an electric screw, a pneumatic cylinder, a hydraulic cylinder and the like. If the space permits, the structure can be expanded into a three-layer or multi-layer nested structure to increase the overall lifting height. The reversible steel plate structure can be determined whether to be configured according to the demand.

[0033] The operation and control logic of the device is shown in the attached Figure 6 and the attached Figure 7 . Before the unit is operated, the shroud is first opened, and the full opening signal of the shroud is triggered to allow the exhaust device to be lifted. When the exhaust device reaches the upper limit point, the full opening signal is triggered, and at this time, the standby operation step of the gas turbine is allowed. When the exhaust device is to be retracted, it is first confirmed whether the gas turbine is stopped, and when the gas turbine is stopped, the exhaust device is allowed to be retracted, the mechanical thrust pin is reset, the retraction button is pressed to control the actuator to reset, and when the exhaust device falls and triggers the reset switch, the shroud is allowed to be reset.

[0034] The specific embodiments of the utility model have been described above. It should be understood that the utility model is not limited to the above specific embodiments, and one or more of the above embodiments can be combined. Those skilled in the art can make various changes or modifications or combinations within the scope of the claims, which does not affect the essential content of the utility model. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined.

Claims

1. A mobile gas turbine generator set exhaust apparatus comprising a nacelle and a gas turbine, characterized in that, Also include: Exhaust device, the exhaust device is arranged on one side of the gas turbine, and the exhaust device is arranged inside the cabin body, and the exhaust device is used for exhausting the high temperature flue gas discharged by the gas turbine to the atmosphere after sound reduction; The exhaust device includes an upper exhaust device and a main exhaust device, the upper exhaust device is nested inside the main exhaust device in a non-working state, the upper exhaust device is lifted by an actuator in a working state, the actuator is arranged on the outer circumferential side of the main exhaust device, and the actuator is connected with the upper exhaust device.

2. A mobile gas turbine generator set exhaust apparatus according to claim 1, wherein The upper exhaust device includes a protective cover arranged on the top of the upper exhaust device, and the protective cover is fixedly connected with the cabin body, and before the exhaust device operates, the protective cover is translated to the head direction through a connecting rod mechanism.

3. A mobile gas turbine generator set exhaust arrangement according to claim 2, wherein, The connecting rod mechanism includes a lead screw and a guide rail, the lead screw and the guide rail are arranged on the upper surface of the upper exhaust device, and a fixed frame is arranged between the lead screw and the guide rail, the fixed frame is in communication with the lead screw and the guide rail and drives the protective cover to move in the horizontal direction.

4. A mobile gas turbine generator set exhaust apparatus according to claim 2 wherein, The actuator is fixedly connected with a bracket, one end of the bracket is fixedly arranged on the outer surface of the main exhaust device, the other end of the bracket is fixedly connected with the upper exhaust device, and the actuator is used to drive the bracket to move and lift the upper exhaust device.

5. A mobile gas turbine generator set exhaust apparatus according to claim 4 wherein, The outer side of the upper exhaust device is provided with a slide in the vertical direction, the slide is provided with a thrust pin, and the thrust pin is used to prevent the upper exhaust device from descending.

6. A mobile gas turbine generator set exhaust arrangement according to claim 5 wherein, The upper exhaust device includes a sheet type silencer arranged on the front and rear sides, the sheet type silencer forms a frame structure, a plurality of sound absorbing plates are arranged inside the upper exhaust device, a heat insulation layer is arranged on the inner wall of the left and right ends of the upper exhaust device, and the sheet type silencer and the heat insulation layer form a frame structure.

7. A mobile gas turbine generator set exhaust arrangement according to claim 6, wherein, The outer side of the upper exhaust device is provided with a plurality of rotatable steel plates, the rotatable steel plates can rotate around the connection between the rotatable steel plates and the upper exhaust device, and can be locked at the required position.

8. A mobile gas turbine generator set exhaust arrangement according to any one of claims 1 to 7, characterised in that, It also includes a trailer chassis and a supporting mechanism, the trailer chassis and the supporting mechanism are arranged at the bottom of the cabin body, and the trailer chassis and the supporting mechanism are used for bearing the whole unit.

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