Sealing assembly of plate-type evaporator for heat pump rectification in high-purity ammonia production

Abstract

The utility model provides a sealing assembly of a plate type evaporator for heat pump rectification in high-purity ammonia production. The sealing assembly comprises a plurality of plates and sealing gaskets arranged on the two sides of the plates. A sealing groove is formed in the plate sheet; the sealing gasket is mounted in the sealing groove; and an expansion structure is mounted in the sealing groove, has elasticity and is used for applying pressure to the sealing gasket. According to the sealing assembly of the plate type evaporator for heat pump rectification in high-purity ammonia production, the sealing gaskets are installed in the sealing grooves and used in cooperation with the expansion structures, the structures apply continuous pressure to the sealing gaskets, and it is ensured that the adjacent sealing gaskets are tightly attached. And as the sealing performance is improved, the cross contamination among different channels caused by sealing failure is reduced, and the purity and efficiency of the rectification process are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of high-purity ammonia heat pump distillation, in particular to a sealing component of a plate evaporator used for heat pump distillation in high-purity ammonia production. Background Art

[0002] In the production of high-purity ammonia, the heat pump distillation process has been widely studied and applied due to its significant energy efficiency advantages. As one of the key components in this process, the plate evaporator is favored for its compact structure, efficient heat transfer performance and relatively low cost. However, the plate evaporator of the prior art has some limitations in design.

[0003] Plate evaporators are usually composed of a series of plates arranged in parallel, which are isolated by gaskets to form independent fluid channels. The main function of these gaskets is to prevent cross-contamination of fluids between different plates and ensure that the fluid flows in the predetermined channel. However, the plate and gasket structure of the prior art only achieves sealing through simple abutment contact. This design shows poor sealing problems in the distillation process of ammonia at high temperature, high pressure or with certain chemical activity. Insufficient sealing performance may lead to leakage of ammonia vapor and other impurity gases, which not only reduces the distillation efficiency, but also may cause environmental pollution and safety risks.

[0004] In view of this, the sealing gasket structure of the existing plate evaporator needs to be improved urgently to enhance its sealing performance and ensure the high efficiency, safety and environmental friendliness of the ammonia distillation process. Utility Model Content

[0005] The utility model provides a sealing component for a plate evaporator used for heat pump distillation in high-purity ammonia production with sealing performance to ensure high efficiency in the ammonia distillation process, thereby solving the problems mentioned in the above background technology.

[0006] The technical solution of the utility model is achieved in this way:

[0007] The sealing assembly of a plate evaporator used for heat pump distillation in high-purity ammonia production includes a plurality of plates and sealing gaskets arranged on both sides of the plates; the plates are provided with sealing grooves; the sealing gaskets are installed in the sealing grooves; an expansion structure is installed in the sealing groove, and the expansion structure is elastic and is used to apply pressure to the sealing gasket.

[0008] Furthermore, the sealing gasket is provided with an adapting groove, the shape and size of which are adapted to the expansion structure, so that the elasticity of the expansion structure acts on the sealing gasket.

[0009] Furthermore, an anti-slip structure is provided on the periphery of the sealing gasket to offset the excessive outward arching of the sealing gasket caused by the expansion structure and thus causing it to slip out of the sealing groove.

[0010] Furthermore, the sealing gasket is connected to the plate through a T-shaped design of a sealing groove, and the T-shaped design includes a vertical part and a horizontal part. The sealing gasket is inserted into the vertical part, and the anti-slip structure of the sealing gasket is adapted to the horizontal part.

[0011] Furthermore, the inner side of the vertical part of the T-shaped sealing groove has a stop structure to prevent the sealing gasket from falling out of the sealing groove.

[0012] Furthermore, the sealing gasket includes a first sealing gasket and a second sealing gasket; the first sealing gasket is provided with at least one convex strip, and the second sealing gasket is provided with at least one groove; the shapes and sizes of the groove and the convex strip are adapted so that the convex strip of the second sealing gasket can be embedded in the groove of the first sealing gasket.

[0013] Beneficial effects of the technical solution provided by this application:

[0014] The sealing assembly of the plate evaporator used for heat pump distillation in the production of high-purity ammonia has a sealing gasket installed in the sealing groove and used in conjunction with the expansion structure. The structure applies continuous pressure to the sealing gasket to ensure that adjacent sealing gaskets fit tightly. Due to the improvement of sealing performance, cross contamination between different channels caused by sealing failure is reduced, ensuring the purity and efficiency of the distillation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the sealing assembly of a plate evaporator for heat pump distillation in the production of high-purity ammonia in the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the plate, expansion structure and sealing gasket of the utility model;

[0018] Figure 3 It is a schematic diagram of the exploded cross section of the plate, expansion structure and sealing gasket of the utility model;

[0019] Figure 4 It is a cross-sectional schematic diagram of the sealing gasket of the utility model.

[0020] In the figure: 100 plate, 110 sealing groove, 111 stop structure; 200 expansion structure; 300 sealing pad, 310 first sealing pad, 320 second sealing pad, 330 adapter groove, 340 anti-slip structure, 350 convex strip, 360 groove. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-4 The sealing assembly of a plate evaporator for heat pump distillation in high-purity ammonia production includes a plurality of plates 100 and sealing gaskets 300 arranged on both sides of the plates 100; a sealing groove 110 is provided on the plate 100; the sealing gasket 300 is installed in the sealing groove 110; an expansion structure 200 is installed in the sealing groove 110, and the expansion structure 200 is elastic and is used to apply pressure to the sealing gasket 300.

[0023] The following is a detailed description of the technical features and functions of the above technical solution:

[0024] Plate 100 and sealing groove 110: Plate 100 is the main part of the plate evaporator, and is provided with sealing groove 110 for installing sealing gasket 300. The design of sealing groove 110 provides a precise installation position for sealing gasket 300, ensuring that sealing gasket 300 can form effective isolation between plates 100.

[0025] Sealing gasket 300: The sealing gasket 300 is installed in the sealing groove 110, and its main function is to prevent cross contamination of fluids between different plates 100 and ensure that the fluid flows in a predetermined channel. The design of the sealing gasket 300 is directly related to the sealing performance.

[0026] Expansion structure 200: The expansion structure 200 includes but is not limited to components such as a coil spring and a leaf spring, is installed in the sealing groove 110, and has elasticity. Its function is to apply pressure to the sealing gasket 300. The elastic force of the expansion structure 200 acts on the sealing gasket 300, causing the sealing gasket 300 to deform outward. This deformation enables the sealing gasket 300 to contact more closely with the opposite sealing gasket 300, thereby improving the sealing performance. This is a key technical feature to solve the poor sealing performance of the prior art.

[0027] An expansion structure 200 is installed in the sealing groove 110 of each plate 100, and the structure is usually made of an elastic material, such as a spring. The elastic force of the expansion structure 200 acts on the sealing gasket 300, pushing the sealing gasket 300 to arch outward to form a convex surface. Under the pressure of the expansion structure 200, the sealing gasket 300 produces an outward arch deformation, and this deformation increases the contact area and pressure distribution of the sealing gasket and the contact tightness with the opposite sealing gasket. When the sealing gasket 300 is arched outward due to the action of the expansion structure 200, it is tightly docked with the opposite sealing gasket to form a sealing surface. This docking ensures the sealing between the plates and prevents the leakage of ammonia between the plates.

[0028] Furthermore, the sealing gasket 300 is provided with an adapting groove 330 , and the shape and size of the adapting groove 330 are adapted to the expansion structure 200 , so that the elasticity of the expansion structure 200 acts on the sealing gasket 300 .

[0029] The sealing gasket 300 is specially designed with an adapting groove 330. The adapting groove 330 is a structural feature on the sealing gasket 300, and its shape and size are precisely designed to match the expansion structure 200. This design allows the elastic force of the expansion structure 200 to act on the sealing gasket 300 more accurately and effectively, thereby improving the sealing effect of the sealing gasket.

[0030] Furthermore, an anti-slip structure 340 is provided at the periphery of the sealing gasket 300 to offset the excessive outward arch of the sealing gasket 300 caused by the expansion structure 200 and the slipping out of the sealing groove 110 .

[0031] The periphery of the sealing gasket 300 is designed with an anti-slip structure 340. This anti-slip structure is specially provided to solve the risk that the sealing gasket 300 may be excessively arched outward due to the pressure applied by the expansion structure 200, thereby having the risk of slipping out of the sealing groove 110. As a preventive measure, the anti-slip structure 340 ensures that the sealing gasket 300 can remain in the correct position even under the pressure of the expansion structure 200, thereby maintaining the integrity and functionality of the sealing assembly.

[0032] The working principle of the anti-slip structure 340 is to form a mechanical lock or block on the periphery of the sealing gasket 300. This structure can be a series of protrusions, grooves or other forms of geometric features, which match the design of the sealing groove 110. When the expansion structure 200 applies pressure to the sealing gasket 300, the sealing gasket will try to expand outward. At this time, the anti-slip structure 340 will form a tight fit with the inner side of the sealing groove 110, generating the necessary resistance to offset the outward arching tendency of the sealing gasket. This resistance prevents the sealing gasket from excessive displacement or complete disengagement, ensuring that the sealing gasket 300 always remains in the sealing groove 110 and maintains the sealing between the plates 100. In this way, the anti-slip structure 340 significantly improves the reliability and stability of the sealing assembly in long-term operation, and can maintain its performance even in a working environment with dynamic pressure changes or thermal cycles.

[0033] Furthermore, the sealing gasket 300 is connected to the plate 100 through a T-shaped design of the sealing groove 110, and the T-shaped design includes a vertical part and a horizontal part. The sealing gasket 300 is inserted into the vertical part, and the anti-slip structure 340 of the sealing gasket 300 is adapted to the horizontal part.

[0034] The connection between the sealing gasket 300 and the plate 100 is achieved through the T-shaped design of the sealing groove 110. This T-shaped design is an innovative mechanical connection method, which consists of a vertical part and a horizontal part. The sealing gasket 300 is designed to be inserted into the vertical part of the T-shaped design, and the anti-slip structure 340 on the sealing gasket 300 is adapted to the horizontal part of the T-shaped design. This design not only provides a stable connection method, but also enhances the positioning stability of the sealing gasket 300 in the sealing groove 110.

[0035] The inserted sealing gasket 300 is received through its vertical portion, ensuring the correct position and orientation of the sealing gasket in the sealing groove 110. When the sealing gasket 300 is inserted into the vertical portion of the T-shaped design, its anti-slip structure 340 interacts with the horizontal portion of the T-shaped design. This interaction can be that the anti-slip structure 340 is inserted or snapped into the horizontal portion of the T-shaped design, forming a locking mechanism to prevent the sealing gasket 300 from being displaced or dislodged when subjected to pressure or vibration. Due to the adaptability of the anti-slip structure 340 to the horizontal portion of the T-shaped design, this locking mechanism not only provides additional stability, but also allows the sealing gasket 300 to be easily replaced or maintained when necessary.

[0036] It should be further explained that the anti-slip structure of the sealing gasket 300 is specifically a rectangular convex strip, which is adapted to the horizontal part of the T-shaped design of the sealing groove 110. The rectangular convex strips extend from the periphery of the sealing gasket 300, and their design size is closely matched with the horizontal part of the sealing groove 110, ensuring the stability of the sealing gasket 300 when subjected to the pressure of the expansion structure 200.

[0037] Furthermore, a stop structure 111 is provided inside the vertical portion of the T-shaped sealing groove 110 to prevent the sealing gasket 300 from falling out of the sealing groove 110 .

[0038] In the T-shaped design of the sealing groove 110, a stop structure 111 is specially designed inside the vertical portion. The stop structure 111 is a series of mechanical features, such as barbs, ribs or internal threads, which protrude or are formed from the inside of the vertical portion of the sealing groove 110 and are specifically used to interact with the side of the sealing gasket 300. This design ensures that the sealing gasket 300 will not fall out of the sealing groove 110 when subjected to pressure or vibration, thereby improving the stability and reliability of the entire sealing assembly.

[0039] The movement of the sealing gasket 300 is physically restricted by forming an obstruction inside the vertical portion of the sealing groove 110. When the sealing gasket 300 is installed in the sealing groove 110, its side surface interacts with the stop structure 111 through friction. This interaction can cause the side surface of the sealing gasket 300 to be stuck between the barbs, against the ribs, or cooperate with the internal threads, thereby forming a secure mechanical lock.

[0040] Furthermore, the sealing gasket 300 includes a first sealing gasket 310 and a second sealing gasket 320; at least one ridge 350 is provided on the first sealing gasket 310, and at least one groove 360 ​​is provided on the second sealing gasket 320; the shapes and sizes of the groove 360 ​​and the ridge 350 are adapted to each other, so that the ridge 350 of the second sealing gasket 320 can be embedded in the groove 360 ​​of the first sealing gasket 310.

[0041] The gasket 300 is designed as a pair of mating parts, including a first gasket 310 and a second gasket 320. This design allows a tight seal to be formed between adjacent plates. The first gasket 310 is designed with one or more ridges 350, while the second gasket 320 opposite thereto is provided with one or more grooves 360. These ridges and grooves not only match each other in shape, but also precisely match in size, ensuring that the ridges 350 on the second gasket 320 can be accurately embedded in the grooves 360 on the first gasket 310, forming an interlocking sealing structure.

[0042] When the plates of the plate evaporator are assembled, the first sealing gasket 310 and the second sealing gasket 320 are placed in the sealing grooves 110 of the adjacent plates. Due to the effect of the expansion structure 200, the convex strip 350 on the first sealing gasket 310 will be pushed toward the second sealing gasket 320 opposite thereto and embedded in the groove 360 ​​thereon. This embedding effect forms a close contact surface, effectively preventing the leakage of the fluid between the plates.

[0043] The advantage of this design is that it not only enhances the sealing between the plates, but also improves the interlocking strength between the gaskets through the cooperation of the convex strips 350 and the grooves 360, thereby reducing the risk of displacement or detachment of the gasket under pressure. In addition, this interlocking structure also helps to evenly distribute the pressure on the gasket, reduce local stress concentration, and extend the service life of the gasket.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing assembly for a plate evaporator for heat pump distillation in high-purity ammonia production, comprising a plurality of plates (100) and sealing gaskets (300) arranged on both sides of the plates (100); characterized in that: The plate (100) is provided with a sealing groove (110); the sealing gasket (300) is installed in the sealing groove (110); an expansion structure (200) is installed in the sealing groove (110); the expansion structure (200) is elastic and is used to apply pressure to the sealing gasket (300).

2. The sealing assembly according to claim 1, characterized in that The sealing pad (300) is provided with an adaption groove (330), and the shape and size of the adaption groove (330) are adapted to the expansion structure (200), so that the elasticity of the expansion structure (200) acts on the sealing pad (300).

3. The sealing assembly according to claim 1, characterized in that The sealing gasket (300) is provided with an anti-slip structure (340) at the periphery thereof to offset the sealing gasket (300) from excessively arching outwards and slipping out of the sealing groove (110) due to the expansion structure (200).

4. The sealing assembly according to claim 3, characterized in that The sealing gasket (300) and the plate (100) are connected via a T-shaped design of a sealing groove (110), wherein the T-shaped design includes a vertical portion and a horizontal portion, the sealing gasket (300) is inserted into the vertical portion, and the anti-slip structure (340) of the sealing gasket (300) is adapted to the horizontal portion.

5. The sealing assembly according to claim 4, characterized in that The inner side of the vertical part of the T-shaped sealing groove (110) is provided with a stop structure (111) to prevent the sealing gasket (300) from falling out of the sealing groove (110).

6. The sealing assembly according to claim 1, wherein: The sealing gasket (300) comprises a first sealing gasket (310) and a second sealing gasket (320); the first sealing gasket (310) is provided with at least one convex strip (350), and the second sealing gasket (320) is provided with at least one groove (360); the shapes and sizes of the groove (360) and the convex strip (350) are matched, so that the convex strip (350) of the second sealing gasket (320) can be embedded in the groove (360) of the first sealing gasket (310).

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