Sealing device for rotary flue gas heat exchanger

Abstract

The utility model relates to a sealing device for a rotary flue gas heat exchanger, which belongs to the technical field of heat exchangers and comprises a mounting sleeve, a sealing adjusting mechanism is arranged on the mounting sleeve, and an auxiliary mounting component is arranged on the mounting sleeve. According to the sealing device for the rotary flue gas heat exchanger, through the arranged sealing adjusting mechanism, under the mutual cooperation of all structures on the mounting sleeve and through dynamic adjustment of the sealing assembly, the sealing assembly can be in close contact with the part, needing to be sealed, of the heat exchanger all the time, and automatic adjustment of a sealing gap can be achieved; the sealing device has the advantages that abrasion to the sealing assembly is reduced, the service life of the sealing device is prolonged, meanwhile, the sealing assembly is of a multi-layer structure, abrasion resistance, high temperature resistance and corrosion resistance of the sealing piece are improved, the performance of the sealing device is further improved, the mounting sleeve is conveniently and quickly mounted under cooperation of the auxiliary mounting assembly, and the service life of the sealing device is prolonged. Therefore, the sealing of the sealing part is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a sealing device for a rotary flue gas heat exchanger. Background Technique

[0002] A heat exchanger is an energy-saving device that realizes heat transfer between materials among two or more fluids at different temperatures, and can transfer heat from a fluid with a higher temperature to a fluid with a lower temperature, so that the fluid temperature reaches the specified index of the process, to meet the needs of process conditions. At the same time, the heat exchanger is also one of the main devices for improving energy utilization efficiency, and occupies an important position in many industrial fields such as chemical industry, petroleum, power, food and others. The rotary air heat exchanger absorbs heat from high-temperature flue gas, and then transfers the heat to cold air through a continuously rotating heat transfer element composed of metal plates with special shapes. When the rotor rotates slowly, the high-temperature flue gas and low-temperature air flow through the heat transfer element alternately. The heat transfer element absorbs heat from the high-temperature flue gas and is washed by the low-temperature air through rotation. The heat transfer element releases heat and raises the temperature of the low-temperature air.

[0003] However, in the hot-state operation of the rotary flue gas heat exchanger, due to thermal expansion of different parts, the gap between the rotor and the sealing surface will change, resulting in an increase in the air leakage rate, reducing the energy-saving performance and operating efficiency of the equipment. Therefore, a sealing device for a rotary flue gas heat exchanger is proposed to solve the above technical problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a sealing device for a rotary flue gas heat exchanger, which has the advantages of dynamic adjustment and good sealing performance, and solves the problems that due to thermal expansion of different parts, the gap between the rotor and the sealing surface will change, resulting in an increase in the air leakage rate, reducing the energy-saving performance and operating efficiency of the equipment.

[0005] To achieve the above object, the utility model provides the following technical solution: A sealing device for a rotary flue gas heat exchanger, including an installation sleeve, a sealing adjustment mechanism is arranged on the installation sleeve, and an auxiliary installation component is arranged on the installation sleeve;

[0006] The sealing adjustment mechanism includes two adjustment seats fixedly installed inside the installation sleeve, fixing rods are fixedly installed inside both of the two adjustment seats, movable frames extending to the outside of the installation sleeve are slidably connected to the outer sides of the two fixing rods, springs sleeved on the outer sides of the fixing rods and fixedly connected to the inner walls of the adjustment seats are fixedly installed at the bottoms of the movable frames, support rods are fixedly installed at the tops of the movable frames, and a sealing component is fixedly installed at the tops of the support rods.

[0007] Furthermore, the sealing assembly is composed of an elastic layer, a protective layer, a reinforcing layer, and a wear-resistant layer. The protective layer is located on top of the reinforcing layer, the elastic layer is disposed on top of the protective layer, and the wear-resistant layer wraps around the outside of the elastic layer, the protective layer, and the reinforcing layer.

[0008] Furthermore, the auxiliary installation assembly includes sliders slidably connected inside two adjusting seats. On opposite sides of the two sliders, connecting rods extending to the outside of the adjusting seats are fixedly installed. On the side of the connecting rod away from the slider, a contact seat is fixedly installed. On the side of the contact seat close to the slider, a rotating rod extending to the outside of the installation sleeve is rotatably connected, and on the side of the rotating rod away from the contact seat, a turntable is fixedly installed.

[0009] Furthermore, a sliding hole is formed inside the movable frame, and the movable frame is slidably connected to the fixed rod through the sliding hole.

[0010] Furthermore, movable grooves are formed on both sides of the installation sleeve, and the movable frame extends to the outside of the installation sleeve through the movable grooves and is fixedly connected to the support rod.

[0011] Furthermore, the wear-resistant layer is made of cemented carbide and is fixed to the elastic layer by an adhesive method.

[0012] Furthermore, limiting grooves are formed on opposite sides of the two adjusting seats, and the connecting rod extends to the outside of the adjusting seat through the limiting grooves and is fixedly connected to the contact seat.

[0013] Furthermore, a threaded hole is formed inside the installation sleeve, and the rotating rod is threadedly connected to the installation sleeve through the threaded hole.

[0014] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0015] For the sealing device of the rotary flue gas heat exchanger, through the provided sealing adjustment mechanism, with the mutual cooperation of the structures on the installation sleeve, by dynamically adjusting the sealing assembly, the sealing assembly can always be in close contact with the parts that need to be sealed of the heat exchanger, can realize the automatic adjustment of the sealing gap, reduce the wear of the sealing assembly, extend the service life of the sealing device. At the same time, the sealing assembly adopts a multi-layer structure, improving the wear resistance, high temperature resistance, and corrosion resistance of the sealing piece, further improving the performance of the sealing device, and with the cooperation of the auxiliary installation assembly, the installation sleeve can be installed conveniently and quickly, thereby realizing the sealing of the sealed part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic cross-sectional view of the structure of the sealing assembly of the present utility model;

[0018] Figure 3 This is a top view schematic diagram of the structure of the present utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the structure of the present utility model.

[0020] In the figure: 1, mounting sleeve; 2, adjusting seat; 3, fixing rod; 4, movable frame; 5, spring; 6, support rod; 7, sealing assembly; 8, slider; 9, connecting rod; 10, contact seat; 11, rotating rod; 12, turntable; 701, elastic layer; 702, protective layer; 703, reinforcing layer; 704, wear-resistant layer. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0022] Please refer to Figures 1 to 4 , a sealing device for a rotary flue gas heat exchanger in this embodiment includes a mounting sleeve 1, a sealing adjustment mechanism is provided on the mounting sleeve 1, and an auxiliary mounting component is provided on the mounting sleeve 1.

[0023] Embodiment 1: The sealing adjustment mechanism includes two adjusting seats 2 fixedly installed inside the mounting sleeve 1, fixing rods 3 are fixedly installed inside both of the two adjusting seats 2, movable frames 4 extending to the outside of the mounting sleeve 1 are slidably connected to the outer sides of the two fixing rods 3, a sliding hole is formed inside the movable frame 4, and the movable frame 4 is slidably connected to the fixing rod 3 through the sliding hole, which is convenient for limiting the movable frame 4 by the fixing rod 3, so that the movement of the movable frame 4 remains stable.

[0024] Among them, a spring 5 sleeved on the outer side of the fixing rod 3 and fixedly connected to the inner wall of the adjusting seat 2 is fixedly installed at the bottom of the movable frame 4, movable grooves are formed on both sides of the mounting sleeve 1, the movable frame 4 extends to the outside of the mounting sleeve 1 through the movable groove and is fixedly connected to the support rod 6, which is convenient for driving the movable frame 4 to adjust its position through the movable groove when the support rod 6 is stressed, a support rod 6 is fixedly installed at the top of the movable frame 4, and a sealing assembly 7 is fixedly installed at the top of the support rod 6.

[0025] In this embodiment, the sealing assembly 7 is composed of an elastic layer 701, a protective layer 702, a reinforcing layer 703, and a wear-resistant layer 704. The protective layer 702 is located on top of the reinforcing layer 703. The elastic layer 701 is disposed on top of the protective layer 702. The wear-resistant layer 704 wraps around the outside of the elastic layer 701, the protective layer 702, and the reinforcing layer 703. The wear-resistant layer 704 is made of cemented carbide and is fixed to the elastic layer 701 by an adhesive bonding method, which is convenient to effectively improve the overall service life of the sealing assembly 7 through the wear-resistant layer 704 made of cemented carbide.

[0026] Embodiment 2: The auxiliary installation assembly includes sliders 8 slidably connected inside two adjusting seats 2. On opposite sides of the two sliders 8, connecting rods 9 extending to the outside of the adjusting seats 2 are fixedly installed. On the side of the connecting rod 9 away from the slider 8, a contact seat 10 is fixedly installed. On opposite sides of the two adjusting seats 2, limiting grooves are respectively opened. The connecting rod 9 extends to the outside of the adjusting seat 2 through the limiting groove and is fixedly connected to the contact seat 10, which is convenient to limit the movement of the contact seat 10 through the connecting rod 9 moving inside the limiting groove, so that its movement remains stable.

[0027] Among them, a rotating rod 11 extending to the outside of the mounting sleeve 1 is rotatably connected to the side of the contact seat 10 close to the slider 8. A threaded hole is opened inside the mounting sleeve 1. The rotating rod 11 is threadedly connected to the mounting sleeve 1 through the threaded hole, which is convenient for the rotating rod 11 to rotate through the threaded hole, so that the contact seat 10 is connected and fixed to the relevant part of the heat exchanger, thereby ensuring the use effect of the sealing assembly 7. On the side of the rotating rod 11 away from the contact seat 10, a turntable 12 is fixedly installed, which is convenient for the staff to rotate the turntable 12 to install and disassemble the mounting sleeve 1.

[0028] It should be noted that for the sealing device of the rotary flue gas heat exchanger, through the provided sealing adjustment mechanism, with the mutual cooperation of the structures on the mounting sleeve 1, through the dynamic adjustment of the sealing assembly 7, the sealing assembly 7 can always be in close contact with the parts that need to be sealed of the heat exchanger, can realize the automatic adjustment of the sealing gap, reduce the wear of the sealing assembly 7, and extend the service life of the sealing device. At the same time, the sealing assembly 7 adopts a multi-layer structure, which improves the wear resistance, high temperature resistance, and corrosion resistance of the sealing piece, further improves the performance of the sealing device, and with the cooperation of the auxiliary installation assembly, the mounting sleeve 1 can be installed conveniently and quickly, so as to realize the sealing of the sealed part.

[0029] The working principle of the above embodiment is as follows:

[0030] When the sealing device for the rotary flue gas heat exchanger is used, the installation sleeve 1 is firstly installed on the part of the heat exchanger that needs to be sealed, and the turntable 12 is rotated to drive the rotating rod 11 to rotate, so that the contact seat 10 contacts the heat exchanger to achieve installation positioning. After the installation of the installation sleeve 1 is completed, the sealing component 7 on its top contacts the sealing part to achieve the sealing of the sealing part, and when the sealing part becomes loose, the spring 5 drives the movable frame 4 to lift upward under its own elastic force, so that the supporting rod 6 connected thereto moves upward, thereby driving the sealing component 7 to move upward as a whole, thereby improving the sealing effect, and the sealing component 7 is composed of an elastic layer 701, a protective layer 702, a reinforcing layer 703 and a wear-resistant layer 704, which helps to improve the wear resistance, high temperature resistance and corrosion resistance of the sealing component 7, and further improves the performance of the sealing device.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing device for a rotary flue gas heat exchanger, comprising a mounting sleeve (1), characterized in that: The installation sleeve (1) is provided with a sealing adjustment mechanism, and the installation sleeve (1) is provided with an auxiliary installation component; The sealing adjustment mechanism comprises two adjustment seats (2) fixedly mounted inside the mounting sleeve (1), a fixing rod (3) fixedly mounted inside the two adjustment seats (2), a movable frame (4) extending to the outside of the mounting sleeve (1) being slidably connected to the outside of the two fixing rods (3), a spring (5) sleeved on the outside of the fixing rod (3) and fixedly connected to the inner wall of the adjustment seat (2) being fixedly mounted at the bottom of the movable frame (4), a support rod (6) fixedly mounted on the top of the movable frame (4), and a sealing assembly (7) fixedly mounted on the top of the support rod (6).

2. A sealing device for a rotary flue gas heat exchanger according to claim 1, characterized in that: The sealing assembly (7) is composed of an elastic layer (701), a protective layer (702), a reinforcing layer (703) and a wear-resistant layer (704); the protective layer (702) is located on the top of the reinforcing layer (703); the elastic layer (701) is arranged on the top of the protective layer (702); and the wear-resistant layer (704) is wrapped around the outer sides of the elastic layer (701), the protective layer (702) and the reinforcing layer (703).

3. The sealing device for a rotary flue gas heat exchanger according to claim 1, characterized in that: The auxiliary mounting assembly comprises a slider (8) slidably connected to the inside of the two adjustment seats (2); a connecting rod (9) extending to the outside of the adjustment seat (2) is fixedly mounted on opposite sides of the two sliders (8); a contact seat (10) is fixedly mounted on the side of the connecting rod (9) away from the slider (8); a rotating rod (11) extending to the outside of the mounting sleeve (1) is rotatably connected to the side of the contact seat (10) close to the slider (8); a rotating disk (12) is fixedly mounted on the side of the rotating rod (11) away from the contact seat (10).

4. The sealing device for a rotary flue gas heat exchanger according to claim 1, characterized in that: A sliding hole is provided inside the movable frame (4), and the movable frame (4) is slidably connected to the fixed rod (3) via the sliding hole.

5. The sealing device for a rotary flue gas heat exchanger according to claim 1, characterized in that: Both sides of the installation sleeve (1) are provided with movable grooves, and the movable frame (4) extends through the movable grooves to the outside of the installation sleeve (1) and is fixedly connected to the support rod (6).

6. A sealing device for a rotary flue gas heat exchanger according to claim 2, characterized in that: The wear-resistant layer (704) is made of hard alloy and is fixed to the elastic layer (701) by bonding.

7. The sealing device for a rotary flue gas heat exchanger according to claim 3, characterized in that: The two adjustment seats (2) are each provided with a limiting groove on one opposite side, and the connecting rod (9) extends through the limiting groove to the outside of the adjustment seat (2) and is fixedly connected to the contact seat (10).

8. The sealing device for a rotary flue gas heat exchanger according to claim 3, characterized in that: A threaded hole is provided inside the installation sleeve (1), and the rotating rod (11) is threadedly connected to the installation sleeve (1) through the threaded hole.

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