Desuperheater structure

Abstract

The invention discloses a desuperheater structure which comprises a water quantity adjusting assembly, a water inlet end of the water quantity adjusting assembly is connected with a water supply pipeline, and the water quantity adjusting assembly is used for adjusting the water inlet quantity; one end of the water pipe is inserted into the steam conveying pipeline, and the other end of the water pipe is connected with the water outlet end of the water volume adjusting assembly; and a rotary joint. According to the invention, the lateral atomizing nozzle is arranged on the rotary joint, and the rotary joint is pushed to rotate around the axis of the steam conveying pipeline by utilizing the pushing force generated when the lateral atomizing nozzle sprays mist, so that cooling water is sprayed into the steam flow in an atomized form, and the steam and the mist are driven to be fully mixed through the rotation of the rotary joint, so that the heat exchange efficiency is improved; meanwhile, the on-off control assembly is arranged to control the communication state of the lateral atomizing nozzles, so that when the water supply amount is decreased, the number of the lateral atomizing nozzles can be decreased synchronously, the atomizing quality of the remaining lateral atomizing nozzles is ensured, and therefore the purpose of improving the temperature control accuracy and stability is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of desuperheaters, and in particular to a desuperheater structure. Background Art

[0002] The statements herein only provide background art related to the present invention and do not necessarily constitute prior art.

[0003] A desuperheater is a device that uses water as a cooling medium to regulate the superheated or reheated steam temperature. Its function is to control and maintain the superheated steam temperature or reheated steam temperature at a specified value and prevent the tube walls of the superheater and reheater from being heated. Desuperheaters are divided into two categories: surface type and spray type. Among them, the spray type desuperheater reduces the temperature of superheated steam by spraying cooling water into the superheated steam flow.

[0004] Traditional spray type desuperheaters have some deficiencies during operation. When the steam temperature changes, to avoid excessive water spraying causing steam to be supercooled, the system adjusts the water supply according to the steam temperature. However, when the water supply decreases and the number of outlet ports is fixed, the water pressure at each outlet port decreases, reducing the spray coverage range of the water mist, resulting in insufficient contact between the steam and the cooling water, and easily causing fluctuations in the superheated steam temperature at the outlet of the superheater, affecting the stability of temperature control.

[0005] Therefore, it is necessary to improve the traditional spray type desuperheater to solve the problem of unstable spray coverage range when the water supply changes, and improve the accuracy and stability of temperature control. Summary of the Invention

[0006] The purpose of the present invention is to provide a desuperheater structure to achieve the purpose of improving the accuracy and stability of temperature control in view of the above deficiencies.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions: A desuperheater structure, comprising:

[0008] A water volume adjustment component, the water inlet end of which is connected to the water supply pipeline and is used to adjust the water inlet volume;

[0009] A water delivery pipe, one end of which is inserted into the steam delivery pipeline and the other end is connected to the water outlet end of the water volume adjustment component;

[0010] A rotary joint, rotatably arranged at the end of the water delivery pipe far from the water volume adjustment component, the rotary joint is communicated with the water delivery pipe, and the axis of the rotary joint shaft coincides with the axis of the steam delivery pipeline;

[0011] A plurality of lateral atomizing nozzles, arranged on the rotary joint and communicated with the rotary joint, for atomizing and spraying water flow and driving the rotary joint to rotate around the axis of the steam delivery pipeline;

[0012] The on-off control component is arranged inside the rotary joint and can control the connection state between each lateral atomizing nozzle and the rotary joint according to the water inflow volume.

[0013] Furthermore, the rotary joint is composed of a connection section rotatably connected to the water delivery pipe and a cylindrical section arranged at one end of the connection section away from the water delivery pipe. A plurality of the lateral atomizing nozzles are annularly and equidistantly distributed on the outer peripheral wall of the cylindrical section, and an axial atomizing nozzle communicating with the water delivery pipe is arranged at one end of the rotary joint away from the water delivery pipe.

[0014] Furthermore, the on-off control component includes a blocking component for blocking the water inlets of the lateral atomizing nozzles and a driving component for driving the blocking component to change the blocking state.

[0015] Furthermore, the blocking component includes:

[0016] A driven shaft, which is rotatably connected to the axial atomizing nozzle, and a guide through hole for the water flow inside the rotary joint to enter the axial atomizing nozzle is provided on the driven shaft;

[0017] A plurality of blocking plates, each of which corresponds to the water inlet of each lateral atomizing nozzle one by one, and the blocking areas of each blocking plate are different. When the driving component drives each blocking plate to rotate synchronously, the water inlets of the lateral atomizing nozzles are sequentially opened or closed;

[0018] A plurality of connecting plates are arranged between each blocking plate and the driven shaft.

[0019] Furthermore, the driving component includes:

[0020] A collar, which is sleeved on the driven shaft and is located on the side of the blocking plate close to the axial atomizing nozzle. The collar can reciprocally move along the axial direction of the driven shaft and can rotate synchronously with the driven shaft. An activity cavity for the collar to reciprocally move along the axial direction of the driven shaft is provided inside the rotary joint. The collar is in dynamic sealing cooperation with the activity cavity, and the activity cavity is communicated with the steam delivery pipeline;

[0021] A guide bead, which is fixedly arranged on the collar and is inserted into the rotary joint. An arc-shaped guide groove for guiding the movement of the guide bead is provided inside the rotary joint, so as to enable the collar to rotate synchronously when moving along the axial direction of the driven shaft;

[0022] A compression spring is arranged on the side of the collar away from the blocking plate, so that different water pressures can push the collar to move different distances.

[0023] Furthermore, a plurality of spoiler plates distributed annularly are arranged on the rotary joint and are used for rotating synchronously when the rotary joint rotates, so as to drive the mixing of steam and mist.

[0024] The beneficial effects of the present invention are reflected in:

[0025] In the present invention, by arranging the lateral atomizing nozzles on the rotary joint, and using the thrust generated during the spraying of the lateral atomizing nozzles, the rotary joint is pushed to rotate around the axis of the steam delivery pipe, so that the cooling water is sprayed into the steam flow in an atomized form. The rotation of the rotary joint drives the steam and the mist to be fully mixed, achieving the purpose of improving the heat exchange efficiency and enhancing the cooling effect. At the same time, by setting the on-off control component to control the connection state of each lateral atomizing nozzle, when the water supply volume decreases, the number of lateral atomizing nozzles can decrease synchronously, ensuring the atomization quality of the remaining lateral atomizing nozzles, thereby achieving the purpose of improving the accuracy and stability of temperature control. Brief Description of the Drawings

[0026] Figure 1 is a three-dimensional view of the present invention;

[0027] Figure 2 is a partial cross-sectional view of the rotary joint of the present invention;

[0028] Figure 3 is a partial exploded view of the plugging component and the driving component of the present invention;

[0029] Figure 4 is a schematic diagram of the working state when some of the lateral atomizing nozzles of the present invention are conducting;

[0030] In the figure:

[0031] 1, water volume adjustment component; 2, water delivery pipe; 3, rotary joint; 4, lateral atomizing nozzle; 5, on-off control component; 51, driven shaft; 52, plugging plate; 53, connecting plate; 54, collar; 55, guide bead; 56, compression spring; 57, arc-shaped guide groove; 6, axial atomizing nozzle; 7, flow disturbing plate. Detailed Description of the Invention

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-4 , the present invention discloses a desuperheater structure, including:

[0034] A water volume adjustment component 1, the water inlet end of the water volume adjustment component 1 is connected to the water supply pipe, and is used to adjust the water inlet volume;

[0035] A water delivery pipe 2, one end of the water delivery pipe 2 is inserted into the steam delivery pipe, and the other end is connected to the water outlet end of the water volume adjustment component 1;

[0036] The rotary joint 3 is rotatably arranged at one end of the water delivery pipe 2 away from the water volume adjustment component 1. The rotary joint 3 is communicated with the water delivery pipe 2, and the axis of the rotary shaft of the rotary joint 3 coincides with the axis of the steam delivery pipe;

[0037] A plurality of lateral atomizing nozzles 4 are arranged on the rotary joint 3 and communicated with the rotary joint 3, and are used for atomizing and spraying water flow and pushing the rotary joint 3 to rotate around the axis of the steam delivery pipe;

[0038] The on-off control component 5 is arranged in the rotary joint 3 and can control the communication state between each lateral atomizing nozzle 4 and the rotary joint 3 according to the water inflow.

[0039] In the present invention, by arranging the lateral atomizing nozzles 4 on the rotary joint 3, using the thrust when the lateral atomizing nozzles 4 spray, the rotary joint 3 is pushed to rotate around the axis of the steam delivery pipe, so that the cooling water is sprayed into the steam flow in an atomized form, and the rotation of the rotary joint 3 drives the steam and the mist to be fully mixed, achieving the purpose of improving the heat exchange efficiency and enhancing the cooling effect. At the same time, by setting the on-off control component 5 to control the communication state of each lateral atomizing nozzle 4, when the water supply decreases, the number of lateral atomizing nozzles 4 can decrease synchronously, ensuring the atomization quality of the remaining lateral atomizing nozzles 4, thereby achieving the purpose of improving the accuracy and stability of temperature control.

[0040] It should be noted that the greater the temperature difference between the steam temperature in the steam delivery pipe and the set temperature, the more the water supply regulated by the water volume adjustment component 1. The water volume adjustment component 1 belongs to the common knowledge in the art, so the specific structural composition and working principle thereof will not be described in detail herein.

[0041] In one embodiment, the rotary joint 3 is composed of a connecting section rotatably connected to the water delivery pipe 2 and a cylindrical section arranged at one end of the connecting section away from the water delivery pipe 2. A plurality of lateral atomizing nozzles 4 are annularly and equidistantly distributed on the outer peripheral wall of the cylindrical section, and an axial atomizing nozzle 6 communicated with the water delivery pipe 2 is arranged at one end of the rotary joint 3 away from the water delivery pipe 2.

[0042] With such a design, the cooling water mist can not only be sprayed laterally from the rotary joint 3 through the lateral atomizing nozzles 4, but also be sprayed axially from the rotary joint 3 through the axial atomizing nozzle 6, so that the steam will be cooled twice when flowing through the rotary joint 3, ensuring that the steam can be fully cooled.

[0043] It should be noted that the tangential force of each lateral atomizing nozzle 4 spraying is the same as the rotation direction of the rotary joint 3, ensuring that when the number of opened lateral atomizing nozzles 4 is different, the rotary joint 3 can be pushed to rotate by the thrust when the lateral atomizing nozzles 4 spray.

[0044] In one embodiment, the on-off control component 5 includes a plugging component for plugging the water inlets of the lateral atomizing nozzles 4 and a driving component for driving the plugging component to change the plugging state.

[0045] The plugging component includes:

[0046] A driven shaft 51, which is rotatably connected to the axial atomizing nozzle 6, and a guide through hole for the water flow in the rotary joint 3 to enter the axial atomizing nozzle 6 is provided on the driven shaft 51;

[0047] A plurality of plugging plates 52, each plugging plate 52 corresponds to the water inlet of each lateral atomizing nozzle 4 one by one, and the plugging areas of the plugging plates 52 are different, and when the driving component drives the plugging plates 52 to rotate synchronously, the water inlets of the lateral atomizing nozzles 4 are sequentially opened or closed;

[0048] A plurality of connecting plates 53 are arranged between each plugging plate 52 and the driven shaft 51.

[0049] With such a design, the rotation of the driven shaft 51 can drive the plugging plates 52 to rotate synchronously. Also, because the plugging areas of the plugging plates 52 are different, the water inlets of the corresponding lateral atomizing nozzles 4 can be opened or plugged one by one by changing the rotation angle of the driven shaft 51. Since the opening and closing of the water inlets of the lateral atomizing nozzles 4 are all controlled by the plugging component, the coordination of the operation of the lateral atomizing nozzles 4 is higher.

[0050] In a specific implementation, by dividing the plurality of plugging plates 52 into two groups, making the area of one group of plugging plates 52 larger than that of the other group of plugging plates 52, and by cross-mounting the two groups of plugging plates 52, the laterally atomizing nozzles 4 that are sequentially opened can be spaced at a relatively long distance, further improving the uniformity of the water mist coverage.

[0051] In one embodiment, the driving component includes:

[0052] A collar 54, which is sleeved on the driven shaft 51 and is located on the side of the plugging plate 52 close to the axial atomizing nozzle 6. The collar 54 can reciprocate axially along the driven shaft 51 and can rotate synchronously with the driven shaft 51. An activity cavity for the collar 54 to reciprocate axially along the driven shaft 51 is provided in the rotary joint 3. The collar 54 is in dynamic sealing fit with the activity cavity, and the activity cavity is communicated with the steam delivery pipeline;

[0053] A guide bead 55, which is fixedly arranged on the collar 54 and is inserted into the rotary joint 3. An arc-shaped guide groove 57 for guiding the movement of the guide bead 55 is provided in the rotary joint 3, for enabling the collar 54 to rotate synchronously when moving axially along the driven shaft 51;

[0054] A compression spring 56 is arranged on the side of the collar 54 away from the plugging plate 52, so that different water pressures can push the collar 54 to move different distances.

[0055] With such a design, the water pressure is utilized to drive the movement of the collar 54, causing the collar 54 to rotate synchronously under the restriction of the guide beads 55 and the arc-shaped guide groove 57 during the movement process, so as to be able to drive the driven shaft 51 to rotate together. Also, because the collar 54 is pushed by the compression spring 56 while being pushed by the water pressure, the lateral atomizing nozzle 4 can automatically adjust the blocking state according to the water pressure, realizing the automatic opening or closing of each lateral atomizing nozzle 4.

[0056] In one embodiment, a plurality of spoiler plates 7 distributed in a ring shape are arranged on the rotary joint 3 and are used to rotate synchronously when the rotary joint 3 rotates, driving the mixing of steam and mist.

[0057] With such a design, the rotation of the rotary joint 3 drives the spoiler plates 7 to rotate synchronously, driving the mixing of the gas in the steam pipeline and further improving the heat exchange efficiency.

[0058] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0059] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0060] In addition, "a plurality of" means two or more.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A desuperheater structure, characterized in that, Including: A water volume regulating component (1), the water inlet end of the water volume regulating component (1) is connected to a water supply pipeline, and is used for regulating the water inlet volume; A water delivery pipe (2), one end of the water delivery pipe (2) is inserted into a steam delivery pipeline, and the other end is connected to the water outlet end of the water volume regulating component (1); A rotary joint (3), rotatably arranged at one end of the water delivery pipe (2) away from the water volume regulating component (1), the rotary joint (3) is communicated with the water delivery pipe (2), and the axis of the rotary shaft of the rotary joint (3) coincides with the axis of the steam delivery pipeline; A plurality of lateral atomizing nozzles (4), arranged on the rotary joint (3) and communicated with the rotary joint (3), for atomizing and spraying water flow, and driving the rotary joint (3) to rotate around the axis of the steam delivery pipeline; An on-off control component (5), arranged in the rotary joint (3), and capable of controlling the communication state between each lateral atomizing nozzle (4) and the rotary joint (3) according to the water inlet volume.

2. The structure of a desuperheater according to claim 1, wherein: The rotary joint (3) is composed of a connecting section rotatably connected to the water delivery pipe (2) and a cylindrical section arranged at one end of the connecting section away from the water delivery pipe (2). A plurality of the lateral atomizing nozzles (4) are annularly and equidistantly distributed on the outer peripheral wall of the cylindrical section. An axial atomizing nozzle (6) communicated with the water delivery pipe (2) is arranged at one end of the rotary joint (3) away from the water delivery pipe (2).

3. The structure of a desuperheater according to claim 2, wherein: The on-off control component (5) includes a plugging component for plugging the water inlet of each lateral atomizing nozzle (4) and a driving component for driving the plugging component to change the plugging state.

4. The structure of a desuperheater according to claim 3, wherein: The plugging component includes: A driven shaft (51), the driven shaft (51) is rotatably connected to the axial atomizing nozzle (6), and a guiding through hole for the water flow in the rotary joint (3) to enter the axial atomizing nozzle (6) is formed on the driven shaft (51); A plurality of plugging plates (52), each plugging plate (52) corresponds to the water inlet of each lateral atomizing nozzle (4) one by one, and the plugging areas of each plugging plate (52) are different, and are used for sequentially opening or closing the water inlets of each lateral atomizing nozzle (4) when the driving component drives each plugging plate (52) to rotate synchronously; A plurality of connecting plates (53), arranged between each plugging plate (52) and the driven shaft (51).

5. The structure of a desuperheater according to claim 4, wherein: The driving component includes: A collar (54), sleeved on the driven shaft (51) and located on the side of the plugging plate (52) close to the axial atomizing nozzle (6). The collar (54) can reciprocate axially along the driven shaft (51) and can rotate synchronously with the driven shaft (51). An activity cavity for the collar (54) to reciprocate axially along the driven shaft (51) is arranged in the rotary joint (3). The collar (54) is in dynamic sealing cooperation with the activity cavity, and the activity cavity is communicated with the steam delivery pipeline; A guide bead (55), fixedly arranged on the collar (54) and inserted into the rotary joint (3). An arc-shaped guide groove (57) for guiding the movement of the guide bead (55) is arranged in the rotary joint (3), and is used for enabling the collar (54) to rotate synchronously when moving axially along the driven shaft (51); A compression spring (56), arranged on the side of the collar (54) away from the plugging plate (52), so that different water pressures can push the collar (54) to move different distances.

6. The structure of a desuperheater according to claim 1, characterized in that: A plurality of spoiler plates (7) distributed in a ring shape are arranged on the rotary joint (3) and are used to rotate synchronously when the rotary joint (3) rotates, driving the mixing of steam and mist.

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