Unit valve driving device

Abstract

The utility model relates to the technical field of units, in particular to a unit valve driving device which comprises a blade body, a cooling channel is formed in the blade body, and a plurality of air film holes communicated with the cooling channel are further formed in the blade body. The blade further comprises a side plate, the side plate is fixedly arranged in the cooling channel of the blade body, an acceleration channel is formed between the side plate and the side wall where the air film hole is located, and the side plate and the side wall where the air film hole is located are arranged in an inclined mode. The air film holes comprise outer holes formed in the outer surface of the blade body, the outer holes are arranged in a rectangular shape and further communicate with a plurality of inner holes, and the inner holes are formed in the side wall of the cooling channel and communicate with the cooling channel. A part of cooling air flow in the cooling channel is sprayed outwards through the air film holes to form a layer of cold air film so as to isolate high-temperature fuel gas on the outer side of the blade body from the outer surface of the blade body, and therefore the covering effect of the cold air film can be improved, and the cooling effectiveness is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of units, in particular to a valve driving device for a unit. Background Art

[0002] A low-calorific-value (LTV) unit is a device that uses low-calorific-value fuel to generate electricity or provide power. The LTC fuel is ignited in the unit's combustion chamber, releasing heat energy. This heat energy heats the working fluid, converting it into high-temperature, high-pressure steam or gas, which propels power units such as steam turbines and gas turbines, converting the heat energy into mechanical energy. Units are generally categorized as low-calorific-value (LTV) gas turbine units, low-calorific-value (LTV) steam turbine units, and combined cycle units. The blades in the gas turbine of a LTC gas turbine unit are used to convert the thermal energy of the gas into mechanical energy for the turbine.

[0003] Gas turbine blades are often directly exposed to high heat loads, particularly at the blade body and tip, where heat loads increase significantly, making them susceptible to oxidation and creep damage. To ensure reliable blade operation, turbine blades must be effectively cooled. Currently, gas turbine blades utilize film cooling. However, existing film cooling methods suffer from poor film coverage and low cooling effectiveness. Furthermore, their complex structure reduces energy conversion efficiency and impacts the unit's power supply. Utility Model Content

[0004] The purpose of the utility model is to provide a valve driving device for a unit to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A unit valve drive device includes a blade body, a cooling channel is provided on the blade body, and a plurality of air film holes connected to the cooling channel are provided on the blade body; the side plate is fixedly arranged in the cooling channel of the blade body, an acceleration channel is formed between the side plate and the side wall where the air film hole is located, and the side plate is inclined to the side wall where the air film hole is located; the air film hole includes an outer hole provided on the outer surface of the blade body, the outer hole is rectangular, and is also connected to a plurality of inner holes, each of the inner holes is provided on the side wall of the cooling channel and is connected to the cooling channel.

[0007] Furthermore, the inner hole and the side wall of the cooling channel are arranged at an inclination.

[0008] Furthermore, the plurality of inner holes are arranged in parallel.

[0009] Furthermore, the outer hole is arranged obliquely on the outer surface of the blade body.

[0010] Furthermore, the plurality of film holes are arranged in a row along the length direction of the blade body, and the film holes in each row are arranged along the width direction of the blade body.

[0011] Furthermore, each row of the air mold holes is arranged at equal intervals along the width direction of the blade body.

[0012] Furthermore, the air film holes in adjacent rows are aligned in the width direction of the blade body.

[0013] Furthermore, the air film holes in adjacent rows are staggered in the width direction of the blade body.

[0014] In the above technical solution, the utility model provides a unit valve driving device with the following beneficial effects:

[0015] 1. Through the provided air film holes and side plates, when the cooling air flow flows inside the cooling channel, due to the pressure difference between the inner and outer sides of the blade body, a part of the cooling air flow inside the cooling channel will be ejected outward through the air film holes, and the cooling air flow ejected through multiple inner holes will be ejected through the outer holes. The ejected cooling air flow will cover the outer wall surface of the blade body and form a layer of cold air film along the direction of gas flow. The cold air film can isolate the high-temperature gas on the outside of the blade body from the outer surface of the blade body, thereby improving the coverage effect of the cold air film, ensuring the cooling effectiveness, and improving the efficiency of the entire machine.

[0016] 2. By setting up the inclined side panels, the cooling airflow will increase its flow rate when passing through the acceleration channel, thereby accelerating the flow speed of the cold air film, thereby improving the isolation effect of the high-temperature combustion gas on the outside of the blade body, and being able to more quickly take away the heat from the high-temperature combustion gas and the outer surface of the blade body, effectively reducing the temperature on the outer surface of the blade body.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0018] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present utility model;

[0021] Figure 2 A schematic cross-sectional view of an embodiment of the present invention Figure 1 ;

[0022] Figure 3 A schematic diagram of a partially enlarged structure provided by an embodiment of the utility model;

[0023] Figure 4 A schematic cross-sectional view of an embodiment of the present invention Figure 2 ;

[0024] Figure 5 A schematic diagram of a partially enlarged structure of B provided in an embodiment of the present utility model;

[0025] Figure 6 A schematic diagram of the front view structure of the blade body of Example 1 provided in the embodiment of the present utility model;

[0026] Figure 7 This is a schematic diagram of the front view structure of the blade body of Example 2 provided in an embodiment of the present utility model.

[0027] Description of reference numerals:

[0028] 1. Blade body; 11. Cooling channel; 2. Air film hole; 21. External hole; 22. Internal hole; 3. Side plate; 31. Acceleration channel. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0030] Example 1:

[0031] See also Figure 1-6, a unit valve driving device includes a blade body 1, a cooling channel 11 is opened on the blade body 1, and a plurality of air film holes 2 connected with the cooling channel 11 are opened on the blade body 1; it also includes a side plate 3, the side plate 3 is fixedly arranged in the cooling channel 11 of the blade body 1, and an acceleration channel 31 is formed between the side plate 3 and the side wall where the air film hole 2 is located, and the side plate 3 is inclined to the side wall where the air film hole 2 is located; the air film hole 2 includes an outer hole 21 opened on the outer surface of the blade body 1, the outer hole 21 is rectangular, and is also connected with a plurality of inner holes 22, each of the inner holes 22 is opened on the side wall of the cooling channel 11 and is connected with the cooling channel 11.

[0032] When the cooling air flow flows inside the cooling channel 11, due to the pressure difference between the inner and outer sides of the blade body 1, a part of the cooling air flow inside the cooling channel 11 will be ejected outward through the air film holes 2, and the cooling air flow ejected through multiple inner holes 22 will be ejected through the outer holes 21. The ejected cooling air flow will cover the outer wall surface of the blade body 1 and form a layer of cold air film along the direction of the gas flow. The cold air film can isolate the high-temperature gas on the outside of the blade body 1 and the outer surface of the blade body 1, thereby improving the covering effect of the cold air film, ensuring the cooling effectiveness, and improving the efficiency of the entire machine; when the cooling air flow passes through the acceleration channel 31, the flow rate of the cooling air flow will be increased, thereby accelerating the flow rate of the cold air film, thereby improving the isolation effect of the high-temperature gas on the outside of the blade body 1, and can more quickly take away the heat on the high-temperature gas and the outer surface of the blade body 1, effectively reducing the temperature on the outer surface of the blade body 1.

[0033] Furthermore, the inner hole 22 and the side wall of the cooling channel 11 are arranged at an inclination.

[0034] Furthermore, the plurality of inner holes 22 are arranged in parallel.

[0035] Furthermore, the outer holes 21 are arranged obliquely on the outer surface of the blade body 1 to form a cold air film together with the adjacent outer holes 21 .

[0036] Furthermore, the plurality of air film holes 2 are arranged in a row along the length direction of the blade body 1 , and each row of the air film holes 2 is arranged along the width direction of the blade body 1 .

[0037] Furthermore, each row of the air mold holes is arranged at equal intervals along the width direction of the blade body 1 .

[0038] Furthermore, the adjacent rows of the film holes 2 are aligned in the width direction of the blade body 1 .

[0039] Example 2:

[0040] See also Figure 7The only difference between this embodiment 2 and the embodiment 1 is that the air film holes 2 in adjacent rows are staggered in the width direction of the blade body 1. The rest of the structure is the same as that of the embodiment 1 and will not be described again.

[0041] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A valve driving device for a unit, comprising a blade body (1), wherein a cooling channel (11) is provided on the blade body (1), and characterized in that: The blade body (1) is also provided with a plurality of air film holes (2) communicating with the cooling channel (11); It also includes a side plate (3), the side plate (3) is fixedly arranged in the cooling channel (11) of the blade body (1), an acceleration channel (31) is formed between the side plate (3) and the side wall where the air film hole (2) is located, and the side plate (3) and the side wall where the air film hole (2) is located are arranged at an angle; The air film hole (2) includes an outer hole (21) opened on the outer surface of the blade body (1), the outer hole (21) is arranged in a rectangular shape, and is also connected to a plurality of inner holes (22), each of the inner holes (22) is opened on the side wall of the cooling channel (11) and is connected to the cooling channel (11).

2. A valve driving device for a unit according to claim 1, characterized in that: The inner hole (22) and the side wall of the cooling channel (11) are arranged at an inclination.

3. The valve driving device of a unit according to claim 1, characterized in that: The plurality of inner holes (22) are arranged in parallel.

4. The valve driving device of a unit according to claim 1, characterized in that: The outer hole (21) is arranged obliquely on the outer surface of the blade body (1).

5. The valve driving device of a unit according to claim 1, characterized in that: The plurality of air film holes (2) are arranged in a row along the length direction of the blade body (1), and the air film holes (2) in each row are arranged along the width direction of the blade body (1).

6. The valve driving device of a unit according to claim 5, characterized in that: Each row of the air film holes is arranged at equal intervals along the width direction of the blade body (1).

7. A valve driving device for a unit according to any one of claims 5 or 6, characterized in that: The adjacent rows of air film holes (2) are arranged in alignment in the width direction of the blade body (1).

8. A valve driving device for a unit according to any one of claims 5 or 6, characterized in that: The adjacent rows of air film holes (2) are staggered in the width direction of the blade body (1).

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