Contact type sealing plate structure of rotary heat exchanger

Abstract

The utility model provides a contact type sealing plate structure of a rotary heat exchanger, and belongs to the field of sealing plate manufacturing. The utility model comprises: a substrate; a contact plate is arranged on the edge of the substrate; the contact plate includes: a nickel-chromium alloy plate; a plurality of through holes are formed in the nichrome plate, and graphite is filled in the through holes. According to the sealing plate structure, the nickel-chromium alloy plate makes contact with the static sealing plate, abrasion resistance is good, meanwhile, the graphite filled in the through holes in the nickel-chromium alloy plate is used for increasing the lubricating property, abrasion resistance is better, the self-lubricating effect is generated when the sealing plate structure makes contact with the static sealing plate, damage to the static sealing plate caused by friction is greatly reduced, and the service life of the sealing plate structure is prolonged. And meanwhile, the contact abrasion problem of the movable sealing piece is also reduced.

Description

Technical Field

[0001] This utility model relates to the manufacturing technology of heating, ventilation and air conditioning equipment, and in particular to a contact-type sealing plate structure for a rotary heat exchanger, belonging to the field of sealing plate manufacturing technology. Background Technology

[0002] A rotary heat exchanger is a device that exchanges heat through a continuously rotating rotor and a heat storage element, with a certain gap between the rotating rotor and the static sealing plate.

[0003] One of the most important performance indicators of a rotary heat exchanger is the leakage rate, and the key factor determining the leakage rate is the sealing gap between the moving and stationary parts, namely the rotor and the sealing plate. The most direct and effective way to reduce leakage in a rotary heat exchanger is to minimize the sealing gap while ensuring the safety of the unit. Currently, the sealing method used domestically and internationally is mainly flexible sealing sheets. Flexible sealing sheets need to be in dynamic contact with the sealing plate for a long time, and they experience significant wear in high-temperature and high-ash operating environments. This places very high demands on the materials, resulting in poor durability and stability, a relatively short service life, and a high maintenance requirement.

[0004] Therefore, the existing sealing plates (sealing sheets) of rotary heat exchangers in the prior art have certain limitations in terms of performance indicators, durability, reliability, adaptability and operation and maintenance materials. Summary of the Invention

[0005] This invention provides a novel contact-type sealing plate structure for rotary heat exchangers. By setting a wear-resistant nickel-chromium alloy plate at the edge of the substrate and filling the through holes with graphite, the wear resistance can be enhanced, thereby solving the technical problem of poor wear resistance and instability of the sealing plate in the prior art.

[0006] The rotary heat exchanger contact sealing plate structure of this utility model includes: a base plate; and a contact plate is provided on the edge of the base plate.

[0007] The contact plate includes a nickel-chromium alloy plate; the nickel-chromium alloy plate has multiple through holes filled with graphite.

[0008] In the rotary heat exchanger contact sealing plate structure described above, the edge of the substrate is provided with an inclined surface, and the contact plate is fixed on the inclined surface.

[0009] The rotary heat exchanger contact sealing plate structure described above further includes: a graphite plate; an interlocking groove provided on the substrate; and a nickel-chromium alloy plate fixed within the interlocking groove via the graphite plate.

[0010] In the rotary heat exchanger contact sealing plate structure described above, a spring is provided between the nickel-chromium alloy plate and the substrate; the nickel-chromium alloy plate is connected to the substrate through the spring, and the graphite plate is pressed into the fitting groove.

[0011] As described above, in the rotary heat exchanger contact sealing plate structure, the through hole is a strip-shaped hole; two adjacent strip holes are arranged at an angle to each other on the nickel-chromium alloy plate.

[0012] In the rotary heat exchanger contact sealing plate structure described above, the included angle between two adjacent strip holes is 45-135 degrees.

[0013] In the rotary heat exchanger contact sealing plate structure described above, the spring is a disc spring or a cylindrical helical spring.

[0014] As described above, in the rotary heat exchanger contact sealing plate structure, the graphite plate has multiple fixing holes, and the graphite plate is sleeved on the outside of the spring through these fixing holes.

[0015] The sealing plate structure of this utility model has good wear resistance through the contact between the nickel-chromium alloy plate and the static sealing plate. At the same time, the graphite filled in the through holes of the nickel-chromium alloy plate increases the lubrication properties, which not only makes it more wear-resistant, but also produces a self-lubricating effect when in contact with the static sealing plate, which greatly reduces friction damage to the static sealing plate, and also reduces the contact wear problem of the dynamic sealing plate. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the contact sealing plate structure of the rotary heat exchanger according to an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 Cross-sectional view at point A;

[0018] Figure 3 for Figure 1 View from direction B. Detailed Implementation

[0019] The rotary heat exchanger contact sealing plate structure described in this utility model can be made of the following materials and components, and is not limited to the following materials and components, such as: springs, nickel-chromium alloys, carbon plates, graphite fillers, etc.

[0020] like Figure 1 The diagram shown is a structural diagram of the contact-type sealing plate structure of the rotary heat exchanger according to an embodiment of this utility model; combined with Figure 2 and Figure 3 As shown.

[0021] The rotary heat exchanger contact sealing plate structure of this embodiment includes: a base plate 1; a contact plate is provided on the edge of the base plate 1; the contact plate is used to contact the static sealing plate to provide a sealing effect during dynamic movement.

[0022] Typically, the substrate 1 has an inclined surface 2 at its edge, and the contact plate is fixed on the inclined surface 2. The inclined surface increases the contact area with the static sealing plate, thereby enhancing the sealing effect and making the wear of the contact plate more uniform.

[0023] The contact plate includes a nickel-chromium alloy plate 3; the nickel-chromium alloy plate 3 has multiple through holes 31, which are filled with graphite. Typically, the graphite is filled and cured within the through holes using an adhesive.

[0024] Nickel-chromium alloy plate 3 is made of nickel-chromium alloy, which is an alloy composed of chromium alloy, iron and nickel, commonly known as stainless steel, and has the characteristics of high wear resistance, high strength and corrosion resistance.

[0025] The sealing plate structure of this utility model has good wear resistance through the contact between the nickel-chromium alloy plate and the static sealing plate. At the same time, the graphite filled in the through holes of the nickel-chromium alloy plate increases the lubrication properties, which not only makes it more wear-resistant, but also produces a self-lubricating effect when in contact with the static sealing plate, which greatly reduces friction damage to the static sealing plate, and also reduces the contact wear problem of the dynamic sealing plate.

[0026] like Figure 2 As shown in the embodiment, the rotary heat exchanger contact sealing plate structure further includes a graphite plate 4; an interlocking groove is provided on the substrate 1; and the nickel-chromium alloy plate 3 is fixed in the interlocking groove via the graphite plate 4. The interlocking groove is used for positioning and installing the graphite plate 4.

[0027] Furthermore, a spring 30 is provided between the nickel-chromium alloy plate 3 and the substrate 1; the nickel-chromium alloy plate 3 is connected to the substrate 1 through the spring 30, and the graphite plate 4 is pressed into the fitting groove.

[0028] Typically, the spring 30 is a disc spring or a cylindrical helical spring.

[0029] Obviously, the graphite plate 4 has multiple fixing holes, and the graphite plate 4 is sleeved on the outside of the spring 30 through these fixing holes.

[0030] In other words, the nickel-chromium alloy plate 3 presses the graphite plate 4 onto the substrate 1. During operation, the nickel-chromium alloy plate 3 will experience natural wear and slight vibration relative to the substrate. Through the vibration, the graphite on the surface of the graphite plate 4 will be continuously peeled off, causing the graphite particles to fall off and enter the through holes 31 on the nickel-chromium alloy plate 3, thus forming a continuous graphite particle falling effect, thereby ensuring that the self-lubricating performance can be maintained for a long time.

[0031] In actual use, the through hole 31 is a strip-shaped hole; two adjacent strip-shaped holes are arranged at an angle to each other on the nickel-chromium alloy plate 3. In order to adapt to different environments, the opening area of ​​the through hole 31 is generally 38%-75% of the total contact plate area, so as to ensure that the self-lubricating properties of graphite can match the wear rate of the nickel-chromium alloy plate.

[0032] In actual use, the included angle between two adjacent slots is 45-135 degrees. Adjacent slots can be arranged in a serrated or other pattern.

[0033] In addition, the rotary heat exchanger contact sealing plate structure of this utility model has low manufacturing cost, is small and exquisite, has a compact structural design, stable finished product quality, is easy to maintain, has a long service life, and is suitable for dynamic gap sealing in various high temperature and high heat environments.

[0034] The sequence numbers of the above-described embodiments of this utility model are merely for descriptive purposes and do not represent the superiority or inferiority of the embodiments. Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of some modifications and the superposition of necessary general technologies; of course, they can also be implemented by simplifying some important technical features. Based on this understanding, the technical solution of this utility model, in essence or in other words, the part that contributes to the prior art, is: the overall structure and connection method, and the structure described in the various embodiments of this utility model.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A contact-type sealing plate structure for a rotary heat exchanger, characterized in that, The utility model relates to a contact plate for substrate, which comprises: a substrate; an edge of the substrate is provided with a contact plate; the contact plate comprises a nickel-chromium alloy plate, and a plurality of through holes are formed in the nickel-chromium alloy plate, and the through holes are filled with graphite.

2. The contact seal plate structure for a rotary heat exchanger according to claim 1, wherein An inclined surface is arranged at the edge of the substrate, and the contact plate is fixed on the inclined surface.

3. The contact seal plate structure for a rotary heat exchanger according to claim 1, wherein The contact plate further comprises a graphite plate, and the substrate is provided with an embedded groove, and the nickel-chromium alloy plate is fixed in the embedded groove through the graphite plate.

4. The contact seal plate structure for a rotary heat exchanger according to claim 3, wherein A spring is arranged between the nickel-chromium alloy plate and the substrate, the nickel-chromium alloy plate is connected with the substrate through the spring, and the graphite plate is pressed in the embedded groove.

5. The contact seal plate structure of a rotary heat exchanger according to any one of claims 1 to 4, wherein The through holes are strip-shaped holes, and two adjacent strip-shaped holes are arranged on the nickel-chromium alloy plate in a mutual inclined manner.

6. The rotary heat exchanger contact seal plate structure according to claim 5, wherein The included angle between the two adjacent strip-shaped holes is 45-135 degrees.

7. The rotary heat exchanger contact seal plate structure according to claim 4, wherein The spring is a butterfly spring or a cylindrical spiral spring.

8. The rotary heat exchanger contact seal plate structure according to claim 7, wherein A plurality of fixing holes are formed in the graphite plate, and the graphite plate is sleeved on the outer side of the spring through the fixing holes.

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