Temperature reduction device

Abstract

The utility model relates to the technical field of steam treatment, in particular to a temperature reduction device which comprises a steam pipeline, a nozzle mechanism and a temperature reduction water supply assembly, the nozzle mechanism is arranged on the steam pipeline and used for spraying and atomizing temperature reduction water to steam passing through the nozzle mechanism, and the temperature reduction water supply assembly is communicated with the nozzle mechanism. The pressure stabilizing mechanism is used for conveying desuperheating water to the nozzle mechanism and stabilizing the pressure of the desuperheating water; the nozzle mechanism comprises a plurality of nozzle assemblies and a connecting pipe, the plurality of nozzle assemblies are uniformly arranged on the steam pipeline, the nozzle assemblies are communicated with the desuperheating water supply assembly, and the central axes of every two adjacent nozzle assemblies are located on the same plane and do not intersect so as to improve the mixing degree of steam and desuperheating water; and the connecting pipes are communicated with the two adjacent nozzle assemblies. The utility model aims to reduce the phenomena of vapor-liquid two-phase flow and water hammer in the vapor cooling process by adjusting a supply pipeline of cooling water and a nozzle, so that the service life of a cooling device and the pipeline is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of steam treatment technology, and in particular to a de-cooling device. Background Technology

[0002] Steam desuperheating devices are crucial equipment for transforming steam thermal parameters (pressure and temperature), widely used in modern industrial, combined heat and power, district heating, light industry, power, and chemical engineering projects. Their main function is to reduce steam parameters to suitable temperature and pressure to meet user requirements, while maximizing the conservation and efficient utilization of thermal energy. The working principle is as follows: the desuperheating device controls a throttling element, causing the steam to lose potential energy during the throttling process, thereby reducing its pressure. Simultaneously, an appropriate amount of cooling water is added through an atomizing and mixing device inside the desuperheater, absorbing heat from the superheated steam and evaporating into steam, thus cooling the steam.

[0003] In existing desuperheating devices, when desuperheating water is sprayed through nozzles onto the inner wall of high-pressure steam pipes, two-phase flow and water hammer often occur. This is often due to poor atomization of the desuperheating water and insufficient mixing with superheated steam. Excessive supply of desuperheating water can also lead to these consequences, and the problem will be more severe. Two-phase flow and water hammer can damage the desuperheating device and pipelines, reducing their service life. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a desuperheating device that, by adjusting the supply pipe and nozzle of the desuperheating water, can reduce the vapor-liquid two-phase flow and water hammer phenomenon that occur during the steam desuperheating process, thereby extending the service life of the desuperheating device and the pipe.

[0005] This utility model solves the above-mentioned technical problems through the following technical means:

[0006] A desuperheating device includes a steam pipe, a nozzle mechanism, and a desuperheating water supply assembly. The nozzle mechanism is arranged on the steam pipe and is used to spray atomized desuperheating water onto the steam passing through the nozzle mechanism. The desuperheating water supply assembly is connected to the nozzle mechanism and is used to deliver desuperheating water to the nozzle mechanism and stabilize the pressure of the desuperheating water.

[0007] The nozzle mechanism includes multiple nozzle assemblies and connecting pipes. The multiple nozzle assemblies are evenly arranged on the steam pipe. The nozzle assemblies are connected to the desuperheating water supply assembly. The central axes of two adjacent nozzle assemblies are on the same plane and do not intersect, which is used to improve the mixing degree of steam and desuperheating water. The connecting pipe is connected to two adjacent nozzle assemblies.

[0008] Furthermore, the multiple nozzle assemblies have the same structure. Each nozzle assembly includes a base, a top seat, and a nozzle structure. The base has an installation cavity, and the nozzle structure is installed in the installation cavity. The installation cavity is connected to a connecting pipe, and the top seat is fixedly connected to the base.

[0009] Based on the above technical means, through the cooperation of the base and the top seat, on the one hand, the desuperheating water supply component can deliver desuperheating water to the nozzle structure; on the other hand, with the help of the connecting pipe, the desuperheating water can be delivered between multiple nozzle components, thereby effectively ensuring the spray volume of atomized desuperheating water.

[0010] Furthermore, the nozzle structure includes a nozzle body, a nozzle core, a pressure regulating spring, a pressure regulating sleeve, and a locking element. The nozzle body has a through hole that communicates with the mounting cavity. The pressure regulating sleeve is slidably fitted onto the nozzle body. The nozzle core is installed inside the nozzle body and extends through the nozzle body and the pressure regulating sleeve. The pressure regulating spring is sleeved on the nozzle core and located inside the pressure regulating sleeve. The locking element is located on the outer wall of the pressure regulating sleeve and is fixedly connected to the nozzle core.

[0011] Based on the above technical means, the spray volume can be adjusted when spraying atomized desuperheating water through the cooperation of the nozzle body, nozzle core, pressure regulating spring, pressure regulating sleeve and locking component.

[0012] Furthermore, the inclination angle of two adjacent nozzle assemblies on the steam pipe is 10-45°.

[0013] Based on the above technical means, by adjusting the position of two adjacent nozzle components, it is beneficial to make the mixing of atomized desuperheating water and steam more uniform during the mixing process, thereby reducing the vapor-liquid two-phase flow and water hammer phenomenon that occur during the steam desuperheating process.

[0014] Furthermore, the steam pipe includes a protective pipe, an inner pipe, and a slider. One end of the inner pipe is fixedly connected to the inside of the protective pipe and extends inside the protective pipe. There is a gap between the other end of the inner pipe and the inner wall of the protective pipe, and the slider is installed at the gap.

[0015] Based on the above technical means, by setting the steam pipe as a protective pipe and an inner pipe, the corrosion and impact on the protective pipe during the mixing process of desuperheating water and steam can be reduced, thereby extending its service life; while the setting of the slider facilitates the installation and fixation of the inner pipe inside the protective pipe.

[0016] Furthermore, the inner tube includes a horn tube, a venturi tube, and a transition tube. One end of the horn tube is fixedly connected to the inner wall of the protective tube, and the other end is fixedly connected to the venturi tube. The outlet of the nozzle assembly passes through the venturi tube. One end of the transition tube is fixedly connected to the venturi tube, and the other end extends inside the protective tube.

[0017] Based on the above-mentioned technical means, the combination of the horn tube and the Venturi tube can increase the steam flow rate, promote the vaporization of the desuperheating water, and shorten the length of the desuperheating water supply components, thereby improving the efficiency of the desuperheating device.

[0018] Furthermore, a reinforcing rib is provided at the connection between the venturi tube and the transition tube.

[0019] Based on the above technical means, the connection strength between the Venturi tube and the transition tube is enhanced by setting reinforcing ribs.

[0020] Furthermore, the steam pipe also includes a temperature measuring element, the free end of which passes through the inner pipe.

[0021] Based on the above technical means, the temperature of the steam pipeline after the desuperheating water is mixed is detected by a temperature measuring device, thereby adjusting the spray volume of desuperheating water and the steam flow rate.

[0022] Furthermore, the desuperheating water supply assembly includes a delivery pipe, a throttle valve, a shut-off valve, a regulating valve, and a check valve. The outlet end of the delivery pipe is connected to the nozzle mechanism, and the throttle valve, shut-off valve, regulating valve, and check valve are arranged in sequence.

[0023] Based on the above-mentioned technical means, the flow rate and pressure of the desuperheating water can be adjusted, which is beneficial to the atomization of the desuperheating water and its mixing with steam.

[0024] Furthermore, the desuperheating water supply assembly also includes a filter and a throttling device, which are arranged sequentially between the throttling valve and the shut-off valve.

[0025] Based on the above-mentioned technical means, impurities in the desuperheating water can be filtered out through the filter, while the flow rate and pressure of the desuperheating water can be adjusted through the throttling device.

[0026] The present application, employing the above-described scheme, has the following beneficial effects:

[0027] 1. In this application, by arranging the nozzle assembly on the steam pipeline with an angle difference, it is beneficial to make the mixing of atomized desuperheating water and steam more uniform during the mixing process, thereby reducing the vapor-liquid two-phase flow and water hammer phenomenon that occur during the steam desuperheating process, and thus extending the service life of the desuperheating device and pipeline.

[0028] 2. In this application, by dividing the steam pipe into a protective pipe and an inner pipe, the corrosion and impact on the protective pipe during the mixing of desuperheating water and steam can be reduced, thereby extending its service life. Furthermore, by dividing the inner pipe into a trumpet tube, a venturi tube, and a transition tube, the cooperation between the trumpet tube and the venturi tube can increase the steam flow rate, promote the vaporization of desuperheating water, and shorten the length of the desuperheating water supply components, thereby improving the efficiency of the desuperheating device. And by using the transition tube, direct contact between steam and the protective pipe is avoided, further extending the service life.

[0029] 3. In this application, by installing a throttle valve, a shut-off valve, a regulating valve and a check valve on the delivery pipe, the delivery flow rate and delivery pressure of the desuperheating water are adjusted, which is beneficial to the atomization of the desuperheating water and its mixing with steam; and by using a filter, impurities in the desuperheating water can be filtered out, avoiding the impact of impurities on the steam pipeline. Attached Figure Description

[0030] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0031] Figure 1 This is a schematic diagram of the cooling device in the embodiments of this application;

[0032] Figure 2 This is one of the structural schematic diagrams of the nozzle mechanism and the steam pipe in the embodiments of this application;

[0033] Figure 3 This is the second schematic diagram of the structure of the nozzle mechanism and the steam pipe in the embodiments of this application;

[0034] Figure 4 This is the third schematic diagram of the structure of the nozzle mechanism and the steam pipe in the embodiments of this application;

[0035] Figure 5 This is a schematic diagram of the nozzle mechanism in an embodiment of this application;

[0036] Figure 6 This is a schematic diagram of the nozzle structure installed in the base in an embodiment of this application;

[0037] Figure 7 This is a schematic diagram of the nozzle structure in an embodiment of this application;

[0038] Explanation of main symbol components:

[0039] 100. Steam pipe; 110. Temperature measuring element; 120. Protective pipe; 130. Transition pipe; 131. Reinforcing rib; 140. Venturi tube; 141. Sliding block; 150. Joint; 160. Trumpet tube; 170. Support; 180. Spiral blade; 200. Delivery pipe; 210. Throttling valve; 220. Filter; 230. Throttling device; 240. Shut-off valve; 250. Regulating valve; 260. Check valve; 300. Nozzle mechanism; 310. Base; 320. Top seat; 330. Connecting pipe; 340. Nozzle structure; 341. Nozzle body; 342. Nozzle core; 343. Pressure regulating sleeve; 344. Pressure regulating spring; 345. Locking element. Detailed Implementation

[0040] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the figures for those skilled in the art.

[0041] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the figures are only for illustrative purposes and should not be construed as limiting the present utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. In the description of this application, terms such as "first", "second", etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0043] like Figure 1-7 As shown in the illustration, this application discloses a desuperheating device, including a steam pipe 100, a nozzle mechanism 300, and a desuperheating water supply assembly. The nozzle mechanism 300 is arranged on the steam pipe 100 and is used to spray atomized desuperheating water onto the steam passing through the nozzle mechanism 300. The desuperheating water supply assembly is connected to the nozzle mechanism 300 and is used to deliver desuperheating water to the nozzle mechanism 300 and stabilize the pressure of the desuperheating water.

[0044] In this embodiment, as Figure 1-3As shown, the steam pipe 100 includes a protective pipe 120, an inner pipe, and a slider 141. One end of the inner pipe is fixedly connected to the inside of the protective pipe 120 and extends within the protective pipe 120. This reduces corrosion and impact on the protective pipe 120 during the mixing of desuperheating water and steam, thereby extending its service life. A gap exists between the extension of the inner pipe within the protective pipe 120 and the inner wall of the protective pipe 120. The slider 141 is installed at this gap to separate and fix the inner pipe within the protective pipe 120. This facilitates the installation and fixation of the inner pipe within the protective pipe 120, and the resulting gap acts as a barrier, preventing excessive heat loss from the steam.

[0045] In this embodiment, multiple sliders 141 can be configured, and the multiple sliders 141 are arranged in a ring to improve the fixing effect. The sliders 141 can also be configured in a ring shape for ease of use.

[0046] In this embodiment, such as Figure 3 As shown, the inner tube includes a bell-shaped tube 160, a venturi tube 140, and a transition tube 130. One end of the bell-shaped tube 160 is fixedly connected to the inner wall of the protective tube 120 by spot welding, and the other end is fixedly connected to the venturi tube 140 through a connector 150. The outlet of the nozzle assembly passes through the venturi tube 140. Through the cooperation of the bell-shaped tube 160 and the venturi tube 140, the steam flow rate can be increased, the vaporization of the desuperheating water can be promoted, and the length of the desuperheating water supply assembly can be shortened, thereby improving the efficiency of the desuperheating device. One end of the transition tube 130 is fixedly connected to the venturi tube 140 by spot welding, and the other end extends inside the protective tube 120.

[0047] In this embodiment, a reinforcing rib 131 is provided at the connection between the venturi tube 140 and the transition tube 130 to strengthen the connection strength between the venturi tube 140 and the transition tube 130.

[0048] In this embodiment, as Figure 1 As shown, a temperature measuring element 110 is also provided at one end of the steam pipe 100 to detect the temperature of the steam pipe 100 after the desuperheating water is mixed, thereby adjusting the spray volume of desuperheating water and the steam flow rate.

[0049] In this embodiment, the temperature measuring element 110 can be a thermometer, which is installed on the steam pipe 100 through a thermometer tube, and the sensing section of the thermometer is located inside the inner tube, thereby enabling the detection of steam problems.

[0050] In this embodiment, as Figure 2As shown, the desuperheating water supply assembly includes a delivery pipe 200, a throttle valve 210, a shut-off valve 240, a regulating valve 250, and a check valve 260. The outlet end of the delivery pipe 200 is connected to the nozzle mechanism 300, allowing desuperheating water to enter the nozzle mechanism 300. The throttle valve 210, shut-off valve 240, regulating valve 250, and check valve 260 are arranged sequentially. These components can regulate the delivery flow rate and pressure of the desuperheating water, thereby facilitating the atomization of the desuperheating water and its mixing with steam.

[0051] In this embodiment, two throttle valves 210 are provided to improve the throttling effect. Two shut-off valves 240 are provided, and a regulating valve 250 is provided between the two shut-off valves 240. On the one hand, it can regulate the pressure of the desuperheating water; on the other hand, it can regulate the flow rate of the desuperheating water entering the regulating valve 250 through the shut-off valves 240.

[0052] In this embodiment, a Y-type filter 220 is sequentially arranged between the second throttle valve 210 and the first shut-off valve 240. The Y-type filter 220 can filter impurities in the desuperheating water, thus preventing impurities from affecting the nozzle mechanism 300 and the steam pipe 100.

[0053] In this embodiment, a five-stage throttling device 230 is provided between the Y-type filter 220 and the first shut-off valve 240. Two five-stage throttling devices 230 are configured to control the flow rate, regulate the pressure, and reduce noise and vibration of the desuperheating water. The five-stage throttling device 230 can be configured as one or more combinations of a venturi tube, an annular orifice plate, an internal cone flow meter, and a wedge flow meter to form the five-stage throttling device 230.

[0054] In this embodiment, as Figure 2-7 As shown, the nozzle mechanism 300 includes multiple nozzle assemblies and a connecting pipe 330. The multiple nozzle assemblies are evenly arranged on the steam pipe 100, with the nozzle ends located inside the inner pipe. The nozzle assemblies are connected to the desuperheating water supply assembly, allowing the desuperheating water to contact the steam after being atomized by the nozzle assemblies. The central axes of two adjacent nozzle assemblies are on the same plane and do not intersect, which improves the mixing degree of steam and desuperheating water. The connecting pipe 330 connects two adjacent nozzle assemblies, allowing the nozzle assemblies to communicate with each other.

[0055] In this embodiment, the nozzle assembly can be set to 4, 5, etc., and can be selected according to the actual situation. The tilt angle between two adjacent nozzle assemblies on the steam pipe 100 is 10-45°, that is, one of the two adjacent nozzle assemblies is tilted relative to the steam pipe 100 at an angle of 10-45°, preferably 30-45°. By adjusting the position of the two adjacent nozzle assemblies, it is beneficial to achieve more uniform mixing during the mixing process of atomized desuperheating water and steam, thereby reducing the vapor-liquid two-phase flow and water hammer phenomenon that occur during the steam desuperheating process, and further extending the service life of the desuperheating device and the pipeline.

[0056] In this embodiment, multiple nozzle assemblies have the same structure. The following description uses one as an example: The nozzle assembly includes a base 310, a top seat 320, and a nozzle structure 340. The base 310 is fixedly connected to the steam pipe 100 by welding. An installation cavity is provided inside the base 310, and the nozzle structure 340 is installed in the installation cavity to adjust the atomization of the desuperheating water. The installation cavity is connected to a connecting pipe 330 to deliver desuperheating water into the installation cavity. The top seat 320 is fixedly connected to the base 310 and connected to a delivery pipe 200, enabling the desuperheating water to be delivered into the installation cavity. Through the cooperation of the base 310 and the top seat 320, on the one hand, the desuperheating water supply assembly can deliver desuperheating water to the nozzle structure 340; on the other hand, in conjunction with the connecting pipe 330, desuperheating water can be delivered between multiple nozzle assemblies, thereby effectively ensuring the spray volume of atomized desuperheating water.

[0057] In this embodiment, the top seat 320 is fixedly connected to the base 310 by bolts. A gasket is provided at the connection between the top seat 320 and the base 310. The gasket can be one of a rubber gasket or a spiral wound gasket, and a suitable gasket material can be selected according to the actual situation.

[0058] In this embodiment, such as Figure 7 As shown, the nozzle structure 340 includes a nozzle body 341, a nozzle core 342, a pressure regulating spring 344, a pressure regulating sleeve 343, and a locking element 345. The nozzle body 341 has a through hole communicating with the mounting cavity, allowing desuperheating water to enter the nozzle body 341. The pressure regulating sleeve 343 is slidably fitted onto the nozzle body 341. The nozzle core 342 is installed inside the nozzle body 341 and extends through both the nozzle body 341 and the pressure regulating sleeve 343. The pressure regulating spring 344 is sleeved on the nozzle core 342 and located inside the pressure regulating sleeve 343, allowing the distance between the nozzle core 342 and the nozzle body 341 to be automatically adjusted according to different flow rates and pressures, thereby controlling the atomization of the desuperheating water. The locking element 345 is located on the outer wall of the pressure regulating sleeve 343 and is fixedly connected to the nozzle core 342, used for the fixed installation of the nozzle core 342 on the pressure regulating sleeve 343.

[0059] In this embodiment, the locking element 345 is a nut, which is connected to the nozzle core 342 by threads or spot welding. The locking element 345 can also be a locking pin, a snap ring, etc., and a suitable connection method can be selected according to the actual situation.

[0060] In some implementations, such as Figure 4 As shown, to improve the mixing uniformity of atomized desuperheating water and steam, brackets 170 are fixedly installed on the inner tube at two opposite nozzle cores 342. Spiral blades 180 are rotatably installed on the two brackets 170. The direction of the upper blade of the spiral blade 180 is opposite to that of the lower blade, so that the atomized desuperheating water sprayed from the two opposite nozzle cores 342 can drive the spiral blade 180 to rotate. The other nozzle cores 342 are tilted and correspond to the side of the spiral blade 180, so that the sprayed atomized desuperheating water can be further mixed evenly with the steam through the rotation of the spiral blade 180, thereby improving the desuperheating effect on the steam.

[0061] In this embodiment, the support 170 has pores, which can increase the probability of contact between the atomized cooling water and the spiral blade 180.

[0062] The above provides a detailed description of a cooling device provided in this application. The specific embodiments are described only to aid in understanding the method and core concepts of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

[0063] It should be noted that the terms "one embodiment," "embodiment," "some alternative embodiments," "exemplary embodiments," and "some embodiments" used in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0064] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A cooling device, characterized in that: It includes a steam pipe (100), a nozzle mechanism (300), and a desuperheating water supply assembly. The nozzle mechanism (300) is arranged on the steam pipe (100) and is used to spray atomized desuperheating water onto the steam passing through the nozzle mechanism (300). The desuperheating water supply assembly is connected to the nozzle mechanism (300) and is used to transport desuperheating water to the nozzle mechanism (300) and stabilize the pressure of the desuperheating water. The nozzle mechanism (300) includes multiple nozzle assemblies and a connecting pipe (330). The multiple nozzle assemblies are evenly arranged on the steam pipe (100). The nozzle assemblies are connected to the desuperheating water supply assembly. The central axes of two adjacent nozzle assemblies are on the same plane and do not intersect, which is used to improve the mixing degree of steam and desuperheating water. The connecting pipe (330) is connected to two adjacent nozzle assemblies.

2. The cooling device according to claim 1, characterized in that: Multiple nozzle assemblies have the same structure. Each nozzle assembly includes a base (310), a top seat (320), and a nozzle structure (340). The base (310) has an installation cavity, and the nozzle structure (340) is installed in the installation cavity. The installation cavity is connected to a connecting pipe (330), and the top seat (320) is fixedly connected to the base (310).

3. The cooling device according to claim 2, characterized in that: The nozzle structure (340) includes a nozzle body (341), a nozzle core (342), a pressure regulating spring (344), a pressure regulating sleeve (343), and a locking member (345). The nozzle body (341) has a through hole that communicates with the mounting cavity. The pressure regulating sleeve (343) is slidably sleeved on the nozzle body (341). The nozzle core (342) is installed inside the nozzle body (341) and extends out of the nozzle body (341) and the pressure regulating sleeve (343). The pressure regulating spring (344) is sleeved on the nozzle core (342) and located inside the pressure regulating sleeve (343). The locking member (345) is provided on the outer wall of the pressure regulating sleeve (343) and is fixedly connected to the nozzle core (342).

4. The cooling device according to claim 1 or 3, characterized in that: The angle of inclination of two adjacent nozzle assemblies on the steam pipe (100) is 10-45°.

5. The cooling device according to claim 1, characterized in that: The steam pipe (100) includes a protective pipe (120), an inner pipe, and a slider (141). One end of the inner pipe is fixedly connected to the inside of the protective pipe (120) and extends inside the protective pipe (120). There is a gap between the other end of the inner pipe and the inner wall of the protective pipe (120). The slider (141) is installed at the gap.

6. The cooling device according to claim 5, characterized in that: The inner tube includes a horn tube (160), a venturi tube (140), and a transition tube (130). One end of the horn tube (160) is fixedly connected to the inner wall of the protective tube (120), and the other end is fixedly connected to the venturi tube (140). The outlet of the nozzle assembly passes through the venturi tube (140). One end of the transition tube (130) is fixedly connected to the venturi tube (140), and the other end extends inside the protective tube (120).

7. The cooling device according to claim 6, characterized in that: A reinforcing rib (131) is provided at the connection between the Venturi tube (140) and the transition tube (130).

8. The cooling device according to claim 5, characterized in that: The steam pipe (100) also includes a temperature measuring element (110), the free end of which is inserted inside the inner pipe.

9. The cooling device according to claim 1, characterized in that: The desuperheating water supply assembly includes a delivery pipe (200), a throttle valve (210), a shut-off valve (240), a regulating valve (250), and a check valve (260). The outlet end of the delivery pipe (200) is connected to the nozzle mechanism (300). The throttle valve (210), shut-off valve (240), regulating valve (250), and check valve (260) are arranged in sequence.

10. The cooling device according to claim 9, characterized in that: The desuperheating water supply assembly also includes a filter (220) and a throttling device (230), which are arranged sequentially between a throttling valve (210) and a shut-off valve (240).

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