High-temperature-resistant activated section steam jet nozzle protection cover

Abstract

The utility model relates to steam jet protection technical field discloses a kind of high-temperature-resistant activation section steam jet protective cover, protective cover includes protective cover assembly, for the fixed mechanism of its splicing, and the buffer assembly connected between jet housing and protective cover assembly. Among them, protective cover assembly is by two half-cylinder protective cover one and protective cover two apposition, and outside suit protective cover shell composition. Buffer assembly includes the fixed column fixed with jet housing, the sliding column fixed with protective cover assembly, spring and the limiting column around spring are set between the two, and sliding column and fixed column sliding fit. The utility model passes through the synergistic effect of split splicing structure and elastic buffer assembly, effectively solve the double defects of the difficulty of disassembly due to integrated structure and the impact force that cannot be absorbed due to rigid connection in prior art, with the dual function of quick maintenance and dynamic protection.

Description

Technical Field

[0001] This utility model relates to the field of steam nozzle protection technology, and in particular to a high-temperature resistant protective cover for an activated section steam nozzle. Background Technology

[0002] Steam nozzles are key components in industrial production, especially in the activation stages of processes in fields such as chemical engineering and materials science. Their function is to inject high-temperature, high-pressure steam to achieve specific process objectives. Because nozzles operate under harsh conditions of high temperature and high-pressure steam for extended periods, their structure is susceptible to external impacts, wear, and the continuous impact of the steam reaction force during operation. Therefore, protective covers are usually installed on their exteriors to extend their service life.

[0003] Currently, to ensure structural strength and sealing, existing steam nozzle protective covers mostly adopt a one-piece or welded structure. While this design provides good physical protection during initial installation, its structural integrity also brings a significant drawback. When the protective cover is damaged due to long-term use, or when the internal nozzles need maintenance, the entire protective cover must be disassembled. For this one-piece structure, the disassembly process is often very cumbersome, sometimes even requiring the disassembly of other equipment around the nozzles. This not only consumes a lot of labor time but also seriously affects the operating efficiency of the entire production line.

[0004] More importantly, the traditional integrated protective cover and nozzle housing are usually rigidly or quasi-rigidly connected. During nozzle operation, the jet of high-temperature, high-pressure steam generates continuous and high-frequency impact forces and vibrations, which act directly on the rigidly connected protective cover without any attenuation. Over time, this continuous impact not only accelerates fatigue damage to the protective cover itself, potentially causing cracks or deformation, but also transmits the impact force to the nozzle body, posing a serious threat to the nozzle's structural stability and service life.

[0005] In summary, existing steam nozzle protective covers generally suffer from a core contradiction: the integrated rigid design adopted in pursuit of structural integrity, while providing basic physical protection, sacrifices the convenience of installation and maintenance, and cannot effectively absorb and buffer dynamic impact loads during operation, making them prone to damage and difficult to replace. This fails to meet the comprehensive requirements of modern industrial production for long service life, high reliability, and ease of maintenance of equipment.

[0006] Therefore, this utility model proposes a high-temperature resistant steam nozzle protective cover for the activation section to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems of existing high-temperature resistant activation section steam nozzle protective covers, such as inconvenient disassembly and maintenance due to their integral rigid structure, and easy damage due to their inability to effectively buffer working impacts, this utility model aims to provide a high-temperature resistant activation section steam nozzle protective cover with an improved structure that can effectively solve the above problems.

[0008] This utility model provides a high-temperature resistant activated section steam nozzle protective cover, including a nozzle housing; a protective cover assembly covering the outer periphery of the nozzle housing; a fixing mechanism for splicing and fixing the protective cover assembly; and a buffer assembly connecting the nozzle housing and the protective cover assembly.

[0009] The protective cover assembly consists of a first protective cover and a second protective cover, which are semi-cylindrical structures that fit together on the left and right sides, as well as a protective cover shell that is fitted over the first and second protective covers.

[0010] Furthermore, the buffer assembly consists of a fixed post fixedly connected to the outer wall of the nozzle housing, a sliding post fixedly connected to the inner wall of the protective cover assembly, and a spring sleeved between the fixed post and the sliding post; the inner wall formed by the first and second protective covers after they are joined together forms a sliding fit relationship with the outer wall of the nozzle housing, and the sliding post and the fixed post form a coaxial sliding fit relationship; the fixing mechanism locks the first and second protective covers and the outer shell of the protective cover into a whole in a detachable manner.

[0011] Preferably, the buffer assembly further includes a limiting post surrounding the outer periphery of the spring to limit the radial deformation of the spring.

[0012] Preferably, the fixing mechanism includes a base, a rotating plate, and a first screw. The base is fixedly connected to the outer surface of the protective cover shell, one end of the rotating plate is rotatably connected to the base, and the first screw passes through the other end of the rotating plate and is threaded to the base.

[0013] Preferably, the fixing mechanism further includes a fixing plate one, a fixing plate two, and a second screw. The fixing plate one spans and is fixed to the edge of the protective cover one, the fixing plate two spans and is fixed to the edge of the protective cover two, and the second screw passes through the fixing plate one and is threaded to the fixing plate two.

[0014] Preferably, the outer shell of the protective cover has a cylindrical structure, and its inner wall fits into the outer wall of the combined protective cover one and protective cover two.

[0015] This utility model has the following beneficial effects: 1. This utility model solves the problem that existing protective covers are mostly one-piece structures, and the disassembly and assembly process is complicated and time-consuming when replacing or repairing them. It achieves the technical effect of quickly completing the installation and replacement of the protective cover without disassembling the nozzle body, which greatly improves the convenience of maintenance and work efficiency.

[0016] 2. This utility model solves the problem that existing protective covers and nozzles are mostly rigidly connected, which cannot effectively absorb steam impact force and easily cause damage to the nozzle or protective cover itself due to impact and vibration. It achieves the technical effect of enabling the protective cover to have an adaptive buffer function, which can effectively resolve steam impact, reduce damage to the nozzle body, and thus significantly extend the overall service life of the equipment.

[0017] 3. This utility model solves the problem that traditional spring buffer structures may experience radial displacement or instability when compressed, thus affecting the reliability of the buffering effect, by adding a limiting post to the outside of the spring of the buffer assembly. It achieves the technical effect of effectively guiding and limiting the compression process of the spring, ensuring the stability and reliability of the buffering function under long-term high-frequency working conditions. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a high-temperature resistant steam nozzle protective cover for the activation section proposed in this utility model. Figure 2 This is a schematic diagram of the structure of the protective cover shell of a high-temperature resistant activated section steam nozzle protective cover proposed in this utility model; Figure 3 This is a schematic diagram of the base of a high-temperature resistant activated section steam nozzle protective cover proposed in this utility model; Figure 4 This is a schematic diagram of the limiting column of a high-temperature resistant activated section steam nozzle protective cover proposed in this utility model.

[0019] Legend: 1. Nozzle housing; 2. Protective cover one; 3. Protective cover two; 4. Protective cover outer shell; 5. Fixing mechanism; 51. Base; 52. Rotating plate; 53. First screw; 54. Fixing plate one; 55. Fixing plate two; 56. Second screw; 6. Buffer assembly; 61. Fixed post; 62. Sliding post; 63. Limiting post; 64. Spring. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] Example: Please refer to Figures 1 to 4 This utility model provides a high-temperature resistant activated section steam nozzle protective cover, which aims to solve the technical problems of existing steam nozzle protective covers, such as inconvenient disassembly and maintenance due to their integrated structure, and the fact that their rigid connection with the nozzle cannot buffer impact forces and is easily damaged.

[0022] like Figure 1 As shown, the high-temperature resistant activated section steam nozzle protective cover takes the nozzle housing 1 as the protected object. Its overall structure includes a protective cover assembly that is detachably covered around the nozzle housing 1, a fixing mechanism 5 for splicing and fixing the protective cover assembly, and a buffer assembly 6 connecting the nozzle housing 1 and the protective cover assembly. Specifically, refer to Figure 1 and Figure 2 The protective cover assembly is the main body that realizes the function of wrapping and protecting. It includes a first protective cover 2 and a second protective cover 3, which are semi-cylindrical in structure. When the first protective cover 2 and the second protective cover 3 are aligned left and right, they together form a cylindrical inner space. This inner space is used to accommodate the nozzle housing 1. Furthermore, the inner wall of the assembly formed by the first protective cover 2 and the second protective cover 3 after being aligned is in a sliding fit relationship with the outer wall of the nozzle housing 1. The protective cover assembly also includes a protective cover outer shell 4, which is cylindrical in structure. It is fitted outside the first protective cover 2 and the second protective cover 3, and the inner wall of the protective cover outer shell 4 is in close contact with the outer wall of the first protective cover 2 and the second protective cover 3, thereby forming a structurally stable shell with multiple layers of protection. Reference Figure 1 and Figure 4The buffer assembly 6 is the core of the adaptive buffering function. It is connected between the nozzle housing 1 and the protective cover assembly. The buffer assembly 6 includes a fixed post 61, a sliding post 62, and a spring 64. One end of the fixed post 61 is fixedly connected to the outer wall of the nozzle housing 1, and one end of the sliding post 62 is fixedly connected to the inner wall of the protective cover assembly. The sliding post 62 and the fixed post 61 form a coaxial sliding fit structure, which allows the protective cover assembly to drive the sliding post 62 to move smoothly back and forth relative to the fixed post 61 when subjected to force. The spring 64 is sleeved between the fixed post 61 and the sliding post 62 to provide elastic buffering force when the protective cover assembly slides relative to the nozzle housing 1. The fixing mechanism 5 is the key to the convenient assembly and disassembly of the entire device. Its overall function is to firmly connect and lock the three separate components, namely, protective cover 1 2, protective cover 2 3 and protective cover shell 4, into an organic whole.

[0023] To further ensure the stable operation of buffer component 6, please refer to the following: Figure 4 The buffer assembly 6 also includes a limiting post 63. The limiting post 63 is specifically structured to surround the outer periphery of the spring 64 and maintain a radial gap with the spring 64. Its two axial ends are respectively close to the relevant structures of the fixed post 61 and the sliding post 62. When the protective cover assembly is subjected to the steam impact force and the sliding post 62 moves towards the fixed post 61, the spring 64 will be compressed. At this time, the presence of the limiting post 63 can effectively limit and support the radial deformation of the spring 64, prevent the spring 64 from bending, twisting or shifting during the compression process, and ensure that the spring 64 can always perform stable elastic deformation and energy absorption along the axial direction, thereby ensuring the reliability and stability of the buffering effect of the entire buffer assembly 6 in long-term reciprocating motion. To ensure a secure connection and easy assembly / disassembly of the protective cover components, please refer to the following instructions. Figure 1 , Figure 2 and Figure 3 The specific structure of the fixing mechanism 5 includes a base 51, a rotating plate 52 and a first screw 53 for locking the protective cover shell 4, and a fixing plate 54, a fixing plate 55 and a second screw 56 for connecting the protective cover 2 and the protective cover 3. The inner and outer two-layer fixing structure of the fixing mechanism 5 will be described in detail below: First, the structure used to fix the inner layer is a fixing plate 54, a fixing plate 55, and a second screw 56. Specifically, the fixing plate 54 is installed on the edge of the protective cover 2 by bridging and fixing, and the fixing plate 55 is bridging and fixing to the edge of the protective cover 3 in the same way. After the protective cover 2 and the protective cover 3 are aligned around the nozzle housing 1, the second screw 56 passes through the fixing plate 54 and is screwed into the fixing plate 55 by thread connection. By tightening the second screw 56, a strong tension force can be generated to firmly splice the protective cover 2 and the protective cover 3 into a preliminary cylindrical whole. Secondly, after the inner layer is fixed, the structure used to fix the outer layer is the base 51, the rotating plate 52, and the first screw 53. Specifically, the base 51 is fixedly installed on the outer surface of the protective cover shell 4. One end of the rotating plate 52 is connected to the base 51 by a rotatable connection, so that the rotating plate 52 can swing freely around the connection point. After the protective cover shell 4 is fitted onto the outside of the assembled protective cover 1 2 and protective cover 2 3, the rotating plate 52 is swung to the predetermined position. At this time, the first screw 53 passes through the other end of the rotating plate 52 and is screwed into the base 51 by a threaded connection. By tightening the first screw 53, the rotating plate 52 can be firmly locked, thereby firmly fixing the protective cover shell 4 to the outside of the protective cover 1 2 and protective cover 2 3, and finally completing the assembly of the entire protective cover assembly.

[0024] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, in order to further improve the stability and reliability of the buffer assembly 6, the buffer assembly 6 also includes a limiting post 63. The limiting post 63 is structured to surround the outer periphery of the spring 64 and maintain a certain radial gap with the spring 64. This arrangement can provide effective radial support for the spring 64 when it is compressed, thereby preventing the spring 64 from becoming unstable or bending, and ensuring the smoothness and efficiency of its energy absorption process. In a preferred embodiment, in order to achieve quick locking and unlocking of the protective cover shell 4, the specific structure of the fixing mechanism 5 for fixing the outer layer is as follows: a base 51 fixedly connected to the outer surface of the protective cover shell 4, a rotating plate 52 whose one end is rotatably connected to the base 51, and a first screw 53 for locking the rotating plate 52. When locked, the first screw 53 passes through the other end of the rotating plate 52 and is threaded into the base 51. As another preferred embodiment, in order to ensure that the protective cover 1 2 and the protective cover 2 3 can be reliably combined to form a stable inner layer structure, the specific structure of the fixing mechanism 5 for fixing the inner layer is as follows: a fixing plate 1 54 that spans and is fixed to the edge of the protective cover 1 2, a fixing plate 2 55 that spans and is fixed to the edge of the protective cover 2 3, and a second screw 56 for tightening the fixing plate 1 54 and the fixing plate 2 55. The second screw 56 passes through the fixing plate 1 54 and is threaded to the fixing plate 2 55. As a specific implementation method, in order to make the overall structure more compact and regular, and to ensure a tight fit between the inner and outer protective structures, the outer shell 4 of the protective cover adopts a cylindrical structure, and the curved surface of its inner wall fits the curved surface of the outer wall after the combination of the protective cover 1 2 and the protective cover 2 3.

[0025] The working principle is as follows: During installation, firstly, the semi-cylindrical protective cover 2 and protective cover 3 are aligned from both sides of the nozzle housing 1, so that their inner walls slide against the outer walls of the nozzle housing 1. Then, fixation plates 54 and 55 are aligned with the edges of protective cover 2 and 3, respectively, and the second screw 56 is passed through fixation plate 54 and screwed into fixation plate 55 to tighten and fix them, thus completing the splicing of the inner protective structure. Next, the cylindrical protective cover shell 4 is fitted onto the outside of the spliced ​​protective cover 2 and 3, so that their inner and outer walls fit together. Finally, the rotating plate 52 is swung to the locking position, and the first screw 53 is passed through the rotating plate 52 and threadedly connected to the base 51 to lock it. At this point, the entire protective cover is firmly installed on the nozzle housing 1. The disassembly process is the reverse of the above steps. The entire process does not require disassembling the nozzle body, which is extremely convenient.

[0026] During operation, when the steam in the activation section impacts the protective cover shell 4, this force is transmitted to the entire protective cover assembly, namely the protective cover shell 4, protective cover one 2, and protective cover two 3. Since the protective cover assembly and the nozzle housing 1 are in a sliding fit, the impact force drives the protective cover assembly to move along the axial direction of the nozzle housing 1. The movement of the protective cover assembly causes the sliding column 62 fixed on its inner wall to move together. The sliding column 62 moves towards the fixed column 61 fixed on the nozzle housing 1 and compresses the spring 64 between them. The compressed spring 64 generates an elastic restoring force opposite to the direction of the impact force. This restoring force can effectively absorb and offset most of the impact energy, playing a significant buffering role, thereby avoiding damage to the nozzle housing 1 caused by rigid impact. During this process, the limiting column 63 always radially limits and supports the spring 64, ensuring the stability and reliability of the buffering process.

Claims

1. A high-temperature resistant protective cover for an activated section steam nozzle, comprising a nozzle housing (1), characterized in that, It also includes a protective cover assembly that is detachably covered around the nozzle housing (1), a fixing mechanism (5) for splicing and fixing the protective cover assembly, and a buffer assembly (6) connecting the nozzle housing (1) and the protective cover assembly. The protective cover assembly includes a first protective cover (2) and a second protective cover (3) which are semi-cylindrical in shape and are aligned left and right, and a protective cover shell (4) which is fitted outside the first protective cover (2) and the second protective cover (3); the inner wall formed by the first protective cover (2) and the second protective cover (3) after they are aligned slides with the outer wall of the nozzle housing (1). The buffer assembly (6) includes a fixed post (61) fixedly connected to the outer wall of the nozzle housing (1), a sliding post (62) fixedly connected to the inner wall of the protective cover assembly and slidably coaxial with the fixed post (61), and a spring (64) sleeved between the fixed post (61) and the sliding post (62) to provide elastic buffering. The fixing mechanism (5) is used to lock the first protective cover (2), the second protective cover (3) and the outer shell of the protective cover (4) into a whole.

2. The high-temperature resistant steam nozzle protective cover for the activation section according to claim 1, characterized in that, The buffer assembly (6) further includes a limiting post (63) which surrounds the outer periphery of the spring (64) and is used to radially limit the spring (64) when it is compressed.

3. The high-temperature resistant steam nozzle protective cover for the activation section according to claim 1, characterized in that, The fixing mechanism (5) includes a base (51), a rotating plate (52), and a first screw (53) for locking the protective cover housing (4).

4. The high-temperature resistant steam nozzle protective cover for the activation section according to claim 3, characterized in that, The base (51) is fixedly connected to the outer surface of the protective cover shell (4); one end of the rotating plate (52) is rotatably connected to the base (51); the first screw (53) passes through the other end of the rotating plate (52) and is threaded to the base (51).

5. The high-temperature resistant steam nozzle protective cover for the activation section according to claim 1 or 3, characterized in that, The fixing mechanism (5) also includes a fixing plate (54), a fixing plate (55), and a second screw (56) for connecting the first protective cover (2) and the second protective cover (3).

6. The high-temperature resistant steam nozzle protective cover for the activation section according to claim 5, characterized in that, The first fixing plate (54) spans and is fixed to the edge of the first protective cover (2); the second fixing plate (55) spans and is fixed to the edge of the second protective cover (3); the second screw (56) passes through the first fixing plate (54) and is threaded to the second fixing plate (55).

7. The high-temperature resistant activated section steam nozzle protective cover according to claim 1, characterized in that, The outer shell (4) of the protective cover is a cylindrical structure, and its inner wall is in contact with the outer walls of the first protective cover (2) and the second protective cover (3).

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