Modularized rapid mounting and connecting device of flue gas waste heat utilization system

Abstract

The utility model discloses a modularized quick mounting and connecting device of a flue gas waste heat utilization system, which comprises a modularized connecting device body, a flue gas waste heat utilization device butt joint pipe is mounted on one side of the modularized connecting device body, and an induced draft fan butt joint pipe is mounted on the other side of the modularized connecting device body. The induced draft fan butt-joint pipe and the flue gas waste heat utilization device butt-joint pipe are fixedly communicated through the modularized connecting device body. According to the modularized rapid mounting and connecting device of the flue gas waste heat utilization system, even in a narrow mounting space, the second fixing base and the first fixing base can be fixedly connected together conveniently through bolts, rapid connection work between a butt-joint pipe of the flue gas waste heat utilization device and a butt-joint pipe of an induced draft fan is completed, the construction difficulty is reduced, and the construction efficiency is improved. Even in a construction site with limited space and inconvenience in operation, cooperation of multiple persons and repeated adjustment are not needed, and the installation complexity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of flue gas waste heat utilization devices, specifically a modular quick installation and connection device for a flue gas waste heat utilization system. Background Technology

[0002] Boiler flue gas heat loss is one of the main heat losses in thermal power plants, and changes in the type of coal used can even cause the flue gas temperature to exceed the design value. Utilizing a boiler tail-end flue gas waste heat recovery system to recover flue gas waste heat can reduce flue gas temperature, significantly reduce flue gas heat loss, and improve the power plant's economic efficiency, making it a crucial way to improve unit thermal efficiency. To save energy and improve power plant economy, power plants use condensate or feedwater to absorb flue gas heat in a low-temperature economizer, lowering the flue gas temperature. After being heated and its temperature increased, the condensate or feedwater returns to the turbine heater system, partially replacing the function of the heaters and forming an integral part of the turbine's thermal system.

[0003] Regarding the patent for flue gas waste heat utilization device, after searching, the publication number CN219797259U discloses a deep flue gas waste heat utilization system. The article states that: the flue gas comes from the outlet of the boiler air preheater, and according to the flue gas flow rate, it passes through the first flue gas waste heat utilization device, electrostatic precipitator, induced draft fan, second flue gas waste heat utilization device, desulfurization tower, and finally is discharged into the atmosphere through the chimney.

[0004] Although the aforementioned device can recover and utilize the energy generated during the process of high-temperature flue gas through the flue gas waste heat recovery device, in actual use, one end of the flue gas waste heat recovery device is connected to the boiler flue gas pipe, and the other end of the flue gas waste heat recovery device is connected to the intake pipe of the induced draft fan through a flange. When two adjacent sets of flanges are installed together, the flanges are generally equipped with multiple sets of holes for bolting. It is necessary to align the flanges with the numerous holes on the flanges before installation, which is quite difficult to achieve. Especially on the construction site, space is limited and operation is inconvenient, which may require the cooperation of multiple people and repeated adjustments, increasing the complexity of the installation. Utility Model Content

[0005] The purpose of this invention is to provide a modular and quick-installation connection device for a flue gas waste heat utilization system, so as to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, a modular quick-installation connection device for a flue gas waste heat utilization system is provided, comprising a modular connection device body, a flue gas waste heat utilization device connecting pipe installed on one side of the modular connection device body, an induced draft fan connecting pipe installed on the other side of the modular connection device body, the induced draft fan connecting pipe and the flue gas waste heat utilization device connecting pipe being fixedly connected through the modular connection device body, a docking plate A is provided on the modular connection device body, the surface of docking plate A is covered with a first sealing ring, a docking plate B is installed on one side of docking plate A, the surface of docking plate B is covered with a second sealing ring, a quick-connection component is provided on the surface of docking plate A, and a locking strip is fixedly provided on the surface of docking plate B.

[0007] Preferably, both docking plate A and docking plate B are circular, with the same diameter. Each docking plate A and docking plate B has a mounting platform fixedly mounted on its surface, and a first sealing ring and a second sealing ring are respectively snapped onto the two mounting platforms.

[0008] Preferably, the first sealing ring has an annularly arranged assembly groove, and the surface of the second sealing ring has an annularly arranged assembly strip, while the thickness of the first sealing ring and the second sealing ring is the same.

[0009] Preferably, the dimensions of the assembly strip and the assembly slot are matched, the assembly strip is snapped into the inside of the assembly slot, and both the assembly strip and the assembly slot are circular.

[0010] Preferably, the first sealing ring and the second sealing ring are positioned and installed together by an assembly strip and an assembly groove, the height of the assembly strip being equal to the depth of the assembly groove; the cross-section of the assembly strip and the assembly groove is rectangular.

[0011] Preferably, five sets of first fixing seats are evenly fixed on the outer circumference of the docking plate A, and five sets of second fixing seats are evenly fixed on the outer circumference of the docking plate B. The five sets of second fixing seats and the five sets of first fixing seats are arranged opposite to each other. Both the second fixing seats and the first fixing seats are circular, and both the second fixing seats and the first fixing seats are provided with screw holes.

[0012] Preferably, the quick docking assembly has five sets of evenly distributed lock bars on the surface of docking plate A, and five sets of evenly distributed lock bars on the surface of docking plate B. The quick docking assembly includes a lock groove and a receiving groove. The lock groove and the lock bar are matched in size. The cross-section of the lock groove and the lock bar are both circular. The cross-section of the receiving groove is both rectangular. The lock bar is inserted into the receiving groove and rotated to engage with the inside of the lock groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses five sets of locking grooves and locking bars to lock the connecting plate A and connecting plate B. At the same time, the setting of locking grooves and locking bars allows the second fixed seat and the first fixed seat to be quickly connected. Even in a narrow installation space, it is easy to use bolts to fix the second fixed seat and the first fixed seat together, completing the quick connection between the flue gas waste heat utilization device connecting pipe and the induced draft fan connecting pipe, reducing the construction difficulty. Even in the construction site with limited space and inconvenient operation, it does not require the cooperation of many people and repeated adjustments, reducing the complexity of installation.

[0015] 2. This utility model achieves a double sealing effect by using a combination of a first sealing ring and a second sealing ring. When the medium attempts to leak from the flange connection, it needs to break through two sealing defenses in succession, which greatly reduces the possibility of leakage. Compared with a single sealing ring structure, the sealing reliability is greatly improved. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0018] Figure 2 for Figure 1 A bottom view;

[0019] Figure 3 for Figure 1 Top view;

[0020] Figure 4 A schematic diagram of the connecting pipe and its connection structure for the flue gas waste heat recovery device;

[0021] Figure 5 This is a schematic diagram of the induced draft fan connecting pipe and its connection structure;

[0022] Figure 6 for Figure 1 A sectional view;

[0023] Figure 7 for Figure 6 A bottom view.

[0024] The annotations in the attached figures are explained as follows:

[0025] 1. Flue gas waste heat recovery device connecting pipe; 2. Connecting plate A; 3. First sealing ring; 31. Assembly groove; 4. First fixing seat; 5. Quick docking assembly; 51. Locking groove; 52. Receiving groove; 6. Second sealing ring; 61. Assembly strip; 7. Second fixing seat; 8. Mounting platform; 9. Connecting plate B; 10. Exhaust fan connecting pipe; 11. Locking strip; 12. Modular connection device body. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] Please see Figure 1-7 This utility model provides a modular quick-installation connection device for a flue gas waste heat utilization system, including a modular connection device body 12. A flue gas waste heat utilization device connecting pipe 1 is installed on one side of the modular connection device body 12, and an induced draft fan connecting pipe 10 is installed on the other side of the modular connection device body 12. The induced draft fan connecting pipe 10 and the flue gas waste heat utilization device connecting pipe 1 are fixedly connected through the modular connection device body 12. A docking plate A2 is provided on the modular connection device body 12. The surface of the docking plate A2 is covered with a first sealing ring 3. A docking plate B9 is installed on one side of the docking plate A2. The surface of the docking plate B9 is covered with a second sealing ring 6. A quick docking component 5 is opened on the surface of the docking plate A2. A locking strip 11 is fixedly provided on the surface of the docking plate B9.

[0031] Working principle: When it is necessary to connect and install the flue gas waste heat utilization device connecting pipe 1 and the induced draft fan connecting pipe 10, hold the induced draft fan connecting pipe 10 by hand, insert the locking bar 11 at the end of the induced draft fan connecting pipe 10 into the receiving groove 52 opened on the end surface of the connecting plate A2, and rotate it so that the locking bar 11 is locked into the locking groove 51; the connecting plate A2 and the connecting plate B9 are locked together by five sets of locking grooves 51 and locking bars 11. At the same time, the setting of locking grooves 51 and locking bars 11 allows the second fixed seat 7 and the first fixed seat 4 to quickly be in position. The interconnected design allows for easy bolt connection of the second fixing seat 7 and the first fixing seat 4, even in confined installation spaces, facilitating quick connection between the flue gas waste heat recovery device connecting pipe 1 and the induced draft fan connecting pipe 10. This reduces construction difficulty, eliminating the need for multiple personnel and repeated adjustments, even in challenging environments. Furthermore, the connecting plate A2 and connecting plate B9 are sealed together via a combined first sealing ring 3 and second sealing ring 6. The first sealing ring 3 and the second sealing ring 6 are positioned and installed together via the assembly strip 61 and the assembly groove 31. The combination of the first sealing ring 3 and the second sealing ring 6 achieves a double sealing effect. When the medium attempts to leak from the flange connection, it needs to overcome two sealing barriers sequentially, greatly reducing the possibility of leakage. Compared to a single sealing ring structure, the sealing reliability is significantly improved. For example, in some chemical fluid transportation pipelines, double sealing can effectively prevent toxic, harmful, or flammable and explosive media from leaking into the environment. The positioning installation method of the assembly strip 61 and the assembly groove 31 ensures that the two sealing rings remain in a relatively fixed position after installation, preventing displacement or twisting, thus ensuring the stability of the sealing performance. Even under certain vibrations or pressure fluctuations in the pipeline, the sealing rings can always maintain a good sealing state. The cooperation of the assembly strip 61 and the assembly groove 31 provides a precise positioning reference for the installation of the sealing rings. Installers can quickly and accurately install the first sealing ring 3 and the second sealing ring 6 into the correct position, avoiding sealing failure caused by installation position deviations, and improving installation efficiency and quality.

[0032] In a preferred embodiment, both docking plate A2 and docking plate B9 are circular and have the same diameter. Both docking plate A2 and docking plate B9 are fixedly provided with mounting platforms 8, and a first sealing ring 3 and a second sealing ring 6 are respectively snapped and fixed on the two sets of mounting platforms 8.

[0033] In a preferred embodiment, the first sealing ring 3 has an annularly arranged assembly groove 31, and the surface of the second sealing ring 6 has an annularly arranged assembly strip 61. At the same time, the thickness of the first sealing ring 3 and the second sealing ring 6 is the same.

[0034] The dimensions of the assembly strip 61 and the assembly groove 31 are compatible. The assembly strip 61 is snapped into the inside of the assembly groove 31. Both the assembly strip 61 and the assembly groove 31 are circular.

[0035] In a preferred embodiment, the first sealing ring 3 and the second sealing ring 6 are positioned and installed together by an assembly strip 61 and an assembly groove 31. The height of the assembly strip 61 is equal to the depth of the assembly groove 31. The cross-section of the assembly strip 61 and the assembly groove 31 is rectangular.

[0036] Five sets of first fixing seats 4 are evenly fixed on the outer circumference of the docking plate A2, and five sets of second fixing seats 7 are evenly fixed on the outer circumference of the docking plate B9. The five sets of second fixing seats 7 and the five sets of first fixing seats 4 are arranged opposite to each other. Both the second fixing seats 7 and the first fixing seats 4 are circular. Both the second fixing seats 7 and the first fixing seats 4 are provided with screw holes.

[0037] In a preferred embodiment, the quick docking assembly 5 has five sets of evenly distributed grooves on the surface of the docking plate A2, and the locking bars 11 have five sets of evenly distributed grooves on the surface of the docking plate B9. The quick docking assembly 5 includes a locking groove 51 and a receiving groove 52. The dimensions of the locking groove 51 and the locking bars 11 are matched. The cross-sections of the locking groove 51 and the locking bars 11 are both circular. The cross-section of the receiving groove 52 is both rectangular. The locking bars 11 are inserted into the receiving groove 52 and rotated and locked into the inside of the locking groove 51.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A modular quick-installation connection device for a flue gas waste heat utilization system, comprising a modular connection device body (12), characterized in that: The modular connection device body (12) is equipped with a flue gas waste heat utilization device connecting pipe (1) on one side and an induced draft fan connecting pipe (10) on the other side. The induced draft fan connecting pipe (10) and the flue gas waste heat utilization device connecting pipe (1) are fixedly connected through the modular connection device body (12). A docking plate A (2) is provided on the modular connection device body (12). The surface of the docking plate A (2) is covered with a first sealing ring (3). A docking plate B (9) is installed on one side of the docking plate A (2). The surface of the docking plate B (9) is covered with a second sealing ring (6). A quick docking component (5) is opened on the surface of the docking plate A (2). A locking strip (11) is fixedly provided on the surface of the docking plate B (9).

2. The modular quick-installation and connection device for a flue gas waste heat utilization system as described in claim 1, characterized in that: Both docking plates A (2) and B (9) are circular and have the same diameter. Both docking plates A (2) and B (9) are fixedly provided with mounting platforms (8). The first sealing ring (3) and the second sealing ring (6) are respectively snapped and fixed on the two sets of mounting platforms (8).

3. The modular quick-installation and connection device for a flue gas waste heat utilization system as described in claim 2, characterized in that: The first sealing ring (3) has an annularly arranged assembly groove (31), and the surface of the second sealing ring (6) has an annularly arranged assembly strip (61). The thickness of the first sealing ring (3) and the second sealing ring (6) is the same.

4. The modular quick-installation and connection device for a flue gas waste heat utilization system as described in claim 3, characterized in that: The dimensions of the assembly strip (61) and the assembly groove (31) are compatible. The assembly strip (61) is snapped into the inside of the assembly groove (31). Both the assembly strip (61) and the assembly groove (31) are circular.

5. A modular quick-installation connection device for a flue gas waste heat utilization system as described in any one of claims 3 or 4, characterized in that: The first sealing ring (3) and the second sealing ring (6) are positioned and installed together by the assembly strip (61) and the assembly groove (31). The height of the assembly strip (61) is equal to the depth of the assembly groove (31). The cross-section of the assembly strip (61) and the assembly groove (31) is rectangular.

6. The modular quick-installation connection device for a flue gas waste heat utilization system as described in claim 1, characterized in that: Five sets of first fixing seats (4) are evenly fixed on the outer circumference of the docking plate A (2), and five sets of second fixing seats (7) are evenly fixed on the outer circumference of the docking plate B (9). The five sets of second fixing seats (7) and the five sets of first fixing seats (4) are arranged opposite to each other. Both the second fixing seats (7) and the first fixing seats (4) are circular. Both the second fixing seats (7) and the first fixing seats (4) are provided with screw holes.

7. The modular quick-installation and connection device for a flue gas waste heat utilization system as described in claim 1, characterized in that: The quick docking assembly (5) has five sets of evenly distributed lock bars (11) on the surface of docking plate A (2), and five sets of evenly distributed lock bars (11) on the surface of docking plate B (9). The quick docking assembly (5) includes a lock groove (51) and a receiving groove (52). The lock groove (51) and the lock bar (11) are matched in size. The cross-sections of the lock groove (51) and the lock bar (11) are both circular. The cross-sections of the receiving groove (52) are both rectangular. The lock bar (11) is inserted into the receiving groove (52) and rotated and locked into the inside of the lock groove (51).

Images