Nozzle structure of steam heat accumulator

Abstract

The utility model discloses a nozzle structure of a steam heat accumulator, which comprises a steam circulating barrel with an opening, and a steam distribution pipe is mounted in the steam circulating barrel. A steam nozzle is mounted at the lower end of the steam distribution pipe; a main steam distribution pipe is mounted at the top end of the steam distribution pipe; the higher the spraying speed of the nozzle is, the stronger the turbulence disturbance is, the shorter the steam heat charging period is, the less the heat loss in the heat accumulator is, the higher the heat efficiency is, the better the utilization effect of the heat accumulator is, and the higher the heat accumulation capacity is. By adjusting the opening angle of the steam nozzle, adjusting the diameter of the opening and drilling the steam nozzle in a layered manner, the contact area between the sprayed steam and water is increased, spraying interference is avoided, the opening angle of the steam nozzle is 30 or 60 degrees, the diameter of the opening is 6 mm, and therefore the steam nozzle structure is easy to machine, cost is reduced, and the steam nozzle is suitable for large-scale production. The heat charging effect is better; the device is simple in structure, convenient to operate and worthy of popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of steam accumulators, and particularly to a nozzle structure of a steam accumulator. Background Art

[0002] The key to the mass transfer and heat transfer effects in the accumulator lies in the degree of water circulation disturbance. When steam is filled, it will cause uneven temperature of water up and down. The resulting density difference helps the disturbance of water. However, this natural convection effect is very limited. The main driving force of water circulation lies in the forced convection caused by the steam flow ejected from the nozzle.

[0003] At present, most domestic steam nozzles adopt the form of directly opening holes in a conical nozzle or a gourd-shaped nozzle. The acceleration performance of the steam nozzle is greatly limited, and the utilization effect of the accumulator is worse. For this reason, we propose a nozzle structure of a steam accumulator. Content of the Utility Model

[0004] The purpose of the utility model is to provide a nozzle structure of a steam accumulator to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A nozzle structure of a steam accumulator, which includes a steam circulation cylinder provided with an opening, and a steam distribution pipe is installed inside the steam circulation cylinder; a steam nozzle is installed at the lower end of the steam distribution pipe; a main steam distribution pipe is installed at the top end of the steam distribution pipe.

[0006] Preferably, the upper end of the steam circulation cylinder is in a straight cylinder shape, and the lower end of the steam circulation cylinder is in a flared shape that expands outwards.

[0007] Preferably, the steam nozzles are arranged in layers in the steam circulation cylinder, and the opening angle of the steam nozzles is 30 degrees or 60 degrees.

[0008] Preferably, the holes of the steam nozzles are drilled, and the opening diameter of the steam nozzles is 6 mm.

[0009] Beneficial Effects: Compared with the prior art, the beneficial effects of the utility model are as follows: By adjusting the opening angle of the steam nozzles, the size of the opening diameter, and adopting the drilling method for the steam nozzles and arranging them in layers, the contact area between the ejected steam and water is increased, and the ejection interference is avoided; and the opening angle of the steam nozzles is 30 or 60 degrees, and the opening diameter is 6 mm, making the nozzle structure of the steam accumulator easy to process, reducing the cost, and having a better heat charging effect. Description of the Drawings

[0010] Figure 1 It is a schematic diagram of the overall structure of a nozzle structure of a steam accumulator proposed by the utility model.

[0011] In the accompanying drawings: 1 - steam circulation cylinder, 2 - steam nozzle, 3 - steam distribution pipe, 4 - main steam distribution pipe. Specific embodiments

[0012] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0013] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0014] Embodiment

[0015] Referring to the accompanying drawings of the specification, in an embodiment of the present invention, a steam accumulator nozzle structure includes a steam circulation cylinder 1 provided with an opening, and a steam distribution pipe 3 is installed inside the steam circulation cylinder 1; a steam nozzle 2 is installed at the lower end of the steam distribution pipe 3; a main steam distribution pipe 4 is installed at the top of the steam distribution pipe 3. The upper end of the steam circulation cylinder 1 is in a straight cylinder shape, and the lower end of the steam circulation cylinder 1 is in a flared shape that expands outwards. The greater the injection speed of the steam nozzle 2, the stronger the turbulent disturbance, the shorter the steam charging period, the less the internal heat loss of the accumulator, the higher the thermal efficiency, the better the utilization effect of the accumulator, and the stronger the heat storage capacity.

[0016] Furthermore, the steam nozzles 2 are arranged in layers inside the steam circulation cylinder 1, and the opening angle of the steam nozzles 2 is 30 degrees or 60 degrees; in order to increase the contact area between the injected steam and water and avoid injection interference, in the steam circulation cylinder 1, the steam nozzles 2 are arranged in layers. The circulating disturbance of water is generated by the combined action of the injection momentum of steam and the density difference between the upper and lower steam-water mixtures. The angle θ between the steam nozzle 2 and the vertical direction (nozzle installation angle) does not affect the magnitude of the injection momentum, but will affect the steam injection angle; the larger the θ angle, the greater the transverse momentum of the steam flow, the more sufficient the transverse mixing of water, and the more uniform the temperature distribution in the water space, and the better the charging effect in the horizontal direction; the smaller the angle, the greater the vertical component of the steam jet. Since the circulating disturbance intensity caused by steam injection is much greater than the natural convection caused by the density difference, the stronger the water circulation disturbance, the better the overall heat transfer effect. Therefore, when the θ angle is about 30° or 60°, a better charging effect can be achieved.

[0017] Furthermore, the holes of the steam nozzle 2 are drilled, and the opening diameter of the steam nozzle 2 is 6 mm. Since the resistance of the nozzle is very small, the simplest small-hole type can be used for the type of the steam nozzle. Compared with the tapered type, the steam nozzle 2 formed by drilling has a larger resistance coefficient. Since the resistance of the steam nozzle 2 is the largest when the pressure of the accumulator is low, and at this time the pressure between the boiler and the accumulator reaches the maximum, there is no need to worry about not reaching the rated flow rate. Using the drilling method can greatly simplify the structure of the accumulator and the processing time of parts, reduce its cost, and have no impact on the performance of the accumulator. The smaller the opening diameter of the steam nozzle 2, the greater the steam ejection speed, the greater the amount of injected steam flow, the greater the disturbance intensity of the water space, and the faster the water circulation. Moreover, the smaller the opening diameter of the steam nozzle 2, the better the atomization effect of the injected steam flow, which will increase the contact surface area with water. These two aspects can strengthen the mass transfer and heat transfer effects of the charging process and improve the injection heat storage performance. However, reducing the nozzle opening diameter will greatly increase the throttling resistance during steam injection and increase irreversible heat loss. Therefore, when the opening diameter of the steam nozzle is 6 mm, considering both increasing the steam injection speed and reducing the throttling resistance, the charging effect is the best, that is, the best injection heat storage effect.

[0018] In the above process, by adjusting the opening angle of the steam nozzle, the opening diameter size, and using the drilling method to open the steam nozzle and arranging it in layers, the contact area between the injected steam and water is increased, and injection interference is avoided. The opening angle of the steam nozzle is 30 or 60 degrees, and the opening diameter is 6 mm, making the structure of the steam nozzle easy to process, reducing the cost, and having a better charging effect. The structure of this application is simple, highly practical, and easy to operate, worthy of promotion.

[0019] In the above specific embodiments, the purpose, technical solution, and beneficial effects of the present invention have been further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0020] In the description of the present invention, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0021] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0023] In addition, terms such as "horizontal", "vertical", "overhanging", etc. do not mean that the component is required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0024] In the present utility model, unless otherwise clearly defined and limited, the first feature being above or below the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being above, over and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

Claims

1. A nozzle structure of a steam accumulator, characterized in that: It includes a steam circulation cylinder (1) provided with an opening, and a steam distribution pipe (3) is installed inside the steam circulation cylinder (1); a steam nozzle (2) is installed at the lower end of the steam distribution pipe (3); a main steam distribution pipe (4) is installed at the top of the steam distribution pipe (3).

2. The nozzle structure of a steam accumulator according to claim 1, characterized in that: The upper end of the steam circulation cylinder (1) is in a straight cylinder shape, and the lower end of the steam circulation cylinder (1) is in a flared shape that expands outwards.

3. The nozzle structure of a steam accumulator according to claim 1, characterized in that: The steam nozzles (2) are arranged in layers inside the steam circulation cylinder (1), and the opening angle of the steam nozzles (2) is 30 degrees or 60 degrees.

4. A steam accumulator nozzle structure according to claim 1, characterized in that: The holes of the steam nozzles (2) are drilled, and the opening diameter of the steam nozzles (2) is 6 mm.

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