Vortex cavitation prevention device for evaporator
By installing an angle-shaped blocking component in the evaporator, the flow of the medium is hindered and vortex formation is prevented, which solves the problem of cavitation in the evaporator and ensures production stability and safety.
Patent Information
- Application Number
- CN202420944944.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The medium at the bottom of the evaporator is driven by rotation and vortex, which in turn causes cavitation, affecting normal production and the use of pumps. The existing anti-vortex device has complex structures or risks of leakage, and is limited by the diameter of the water inlet pipe, so it cannot fully play its role.
A barrier assembly including the first and second barrier members is designed, mounted in the evaporator cavity, and the extensions of the first and second barrier members are connected to the evaporator to form an angle to hinder the flow of the medium and prevent vortex formation, And improve stability and strength through welding.
Effectively prevent air in the evaporator from entering the pump, avoid cavitation, ensure production stability, and adapt to vortex protection in evaporators of different specifications.
Smart Images
Figure CN222297893U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of evaporators, and in particular to an anti-vortex cavitation device for an evaporator. Background Art
[0002] When the medium at the bottom of the evaporator is pumped out by a pump and transported to the next process, cavitation will generally occur due to the vortex at the bottom of the evaporator. The reason for the vortex at the bottom is that the extraction pump impeller drives the medium to rotate when it rotates, and the medium in the pump inlet pipe is driven to rotate under the action of the intermolecular force of the medium until it is transmitted to the medium in the evaporator and rotates together. The rotation of the medium in the evaporator reduces the center height of the medium in the tower and entrains air into the pump chamber. When the entrained air enters the high-pressure area of the medium, the air ball in the medium breaks, and then cavitation occurs in the pump chamber, which will have a greater negative impact on normal production and the use of the pump.
[0003] In the related art, the anti-vortex device is installed on the water inlet pipe of the water pump. Some of them have complex structures, such as a cone with a grid plate on the top surface for liquid inflow; some installations have the risk of leakage, and the anti-vortex device is installed in the middle of the pipe. In addition, due to the limitation of the diameter of the water inlet pipe, the function of the anti-vortex device cannot be fully exerted. Utility Model Content
[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the embodiment of the utility model provides an anti-vortex cavitation device for an evaporator, which has a simple structure and good anti-vortex effect.
[0005] The anti-vortex cavitation device for an evaporator according to an embodiment of the utility model comprises:
[0006] The blocking assembly is located in the cavity of the evaporator and is arranged adjacent to the bottom of the evaporator. The blocking assembly includes a first blocking member and a second blocking member. The first blocking member includes a first blocking portion and a first extending portion connected to each other. The second blocking member includes a second blocking portion and a second extending portion connected to each other. The first blocking portion and the second blocking portion are connected to each other. The first extending portion and the second extending portion are both connected to the evaporator.
[0007] In a plane orthogonal to the height direction of the evaporator, an extending direction of the first blocking member and an extending direction of the second blocking member form an included angle.
[0008] The anti-vortex cavitation device for the evaporator of the embodiment of the utility model installs the first blocking part and the second blocking part in the evaporator cavity at a certain angle, so that when the evaporator uses a pump to extract the medium, the blocking component can hinder the flow of the medium inside the evaporator, preventing the medium from forming a vortex in the evaporator, thereby avoiding the air in the evaporator from entering the pump and causing cavitation.
[0009] In some embodiments, there are two first extension parts, the two first extension parts are arranged opposite to each other in the length direction of the first blocking part, and the first extension parts are connected to the inner wall of the evaporator.
[0010] There are two second extension parts, and the two second extension parts are arranged opposite to each other in the length direction of the second blocking part. The second extension part is connected to the inner wall of the evaporator, and the second extension part is connected to the first extension part.
[0011] In some embodiments, an extending direction of the first extending portion is orthogonal to an extending direction of the first blocking portion, and an extending direction of the second extending portion is orthogonal to an extending direction of the second blocking portion.
[0012] In some embodiments, the first extension portion and the second extension portion are connected to the evaporator by welding.
[0013] In some embodiments, in the height direction of the evaporator, the ratio of the distance from the blocking assembly to the bottom of the evaporator to the height of the evaporator is greater than or equal to 1 / 4 and less than or equal to 1 / 3.
[0014] In some embodiments, there are a plurality of second extension portions, and the plurality of second extension portions are arranged at intervals in the extension direction of the first extension portion.
[0015] In some embodiments, there are a plurality of first extension portions, and the plurality of first extension portions are arranged at intervals in an extension direction of the second extension portion.
[0016] In some embodiments, in a plane orthogonal to the height direction of the evaporator, an angle between an extension direction of the first blocking portion and an extension direction of the second blocking portion is greater than or equal to 45° and less than or equal to 90°.
[0017] In some embodiments, in a plane orthogonal to the height direction of the evaporator, a ratio of a projected area of the blocking assembly to a projected area of the evaporator cavity is less than or equal to 0.4.
[0018] In some embodiments, the barrier assembly is integrally formed. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1It is a schematic diagram of the installation of an anti-vortex cavitation device for an evaporator according to an embodiment of the utility model.
[0020] Figure 2 It is a schematic structural diagram of an anti-vortex cavitation device for an evaporator according to an embodiment of the utility model.
[0021] Figure 3 It is a structural schematic diagram of an anti-vortex cavitation device for an evaporator according to another embodiment of the utility model.
[0022] Figure 4 It is a schematic structural diagram of an anti-vortex cavitation device for an evaporator according to another embodiment of the utility model.
[0023] Reference numerals:
[0024] 100. Evaporator,
[0025] 1. Blocking components,
[0026] 11. a first blocking member, 111. a first blocking portion, 112. a first extending portion,
[0027] 12. Second blocking member, 121. Second blocking portion, 122. Second extending portion. DETAILED DESCRIPTION
[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.
[0029] like Figure 1-Figure 4 As shown, the anti-vortex cavitation device for an evaporator according to an embodiment of the utility model includes a blocking assembly 1, which is located in the cavity of the evaporator 100 and arranged adjacent to the bottom of the evaporator 100. The blocking assembly 1 includes a first blocking member 11 and a second blocking member 12. The first blocking member 11 includes a first blocking portion 111 and a first extending portion 112 connected to each other, and the second blocking member 12 includes a second blocking portion 121 and a second extending portion 122 connected to each other. The first blocking portion 111 and the second blocking portion 121 are connected, and the first extending portion 112 and the second extending portion 122 are both connected to the evaporator 100, in a height direction orthogonal to the evaporator 100 (such as Figure 1 In a plane on the up-down direction in the plane, an extending direction of the first blocking member 11 and an extending direction of the second blocking member 12 have an included angle.
[0030] Specifically, Figure 1 and Figure 2As shown, the blocking assembly 1 is installed in the cavity of the evaporator 100 and is located at the lower part of the cavity of the evaporator 100. The first blocking portion 111 and the second blocking portion 121 are arranged crosswise in the horizontal plane to ensure that the first blocking portion 111 and the second blocking portion 121 can block the formation of vortex in the evaporator 100, thereby preventing the gas in the evaporator 100 from passing into the pump, thereby preventing cavitation from occurring inside the pump.
[0031] It is understandable that when the liquid in the evaporator 100 is extracted by using a pump, as the liquid in the evaporator 100 descends and the water flows, a vortex is easily formed near the bottom of the evaporator 100. The barrier component 1 is installed at the lower part of the evaporator 100, which can better avoid the generation of vortexes, thereby ensuring that the gas in the evaporator 100 enters the pump.
[0032] Optionally, the first extension part 112 and the second extension part 122 are welded to the evaporator 100. It should be noted that the material of the blocking component 1 is consistent with the material of the main body of the evaporator 100, which can effectively ensure that there is a high welding strength between the first extension part 112 and the second extension part 122 and the evaporator 100, and can also effectively prevent the blocking component 1 from falling off from the evaporator 100 during use, thereby ensuring stable production operation.
[0033] In other words, the anti-vortex cavitation device for the evaporator of the embodiment of the utility model installs the first blocking portion 111 and the second blocking portion 121 in the cavity of the evaporator 100 at a certain angle, so that when the evaporator 100 uses a pump to extract the medium, the blocking component 1 can hinder the flow of the medium inside the evaporator 100, preventing the medium from forming a vortex in the evaporator 100, thereby avoiding the air in the evaporator 100 from entering the pump and causing cavitation.
[0034] In some embodiments, there are two first extension portions 112, which are arranged opposite to each other in the length direction of the first blocking portion 111, and the first extension portion 112 is connected to the inner wall of the evaporator 100; there are two second extension portions 122, which are arranged opposite to each other in the length direction of the second blocking portion 121, and the second extension portion 122 is connected to the inner wall of the evaporator 100, and the second extension portion 122 is connected to the first extension portion 112.
[0035] Specifically, Figure 1 As shown, the two first extensions 112 are respectively connected to the two ends of the first blocking portion 111. The two second extensions 122 are respectively connected to the two ends of the second blocking portion 121. Taking the first blocking member 11 as an example, preferably, the two first extensions 112 are symmetrically arranged relative to the first blocking portion 111, which increases the stability of welding the first extensions 112 and the evaporator 100.
[0036] In some embodiments, the extending direction of the first extension part 112 is orthogonal to the extending direction of the first blocking part 111, and the extending direction of the second extension part 122 is orthogonal to the extending direction of the second blocking part 121.
[0037] It can be understood that as Figure 1 and Figure 2 shown, both the first blocking part 111 and the second blocking part 121 are horizontally arranged, then the first extension part 112 and the second extension part 122 are respectively arranged perpendicular to the first blocking part 111 and the second blocking part 121, and the first extension part 112 and the second extension part 122 respectively extend downward relative to the first blocking part 111 and the second blocking part 121.
[0038] Optionally, in the height direction of the evaporator 100, the ratio of the distance from the blocking assembly 1 to the bottom of the evaporator 100 to the height of the evaporator 100 is greater than or equal to 1 / 4 and less than or equal to 1 / 3.
[0039] It can be understood that the higher the distance from the blocking assembly 1 to the bottom of the evaporator 100, the easier it is to form a vortex below the blocking assembly 1, and then the blocking assembly 1 cannot play a role in blocking the formation of the vortex; the lower the distance from the blocking assembly 1 to the bottom of the evaporator 100, the easier it is for the vortex to collide with the blocking assembly 1 after formation, that is, there is a possibility that gas leaks to the pump. Therefore, installing the blocking assembly 1 between 1 / 4 and 1 / 3 of the height of the evaporator 100 can better avoid the formation of the vortex, and thus ensure the safe operation of the pump.
[0040] In other embodiments, as Figure 3 shown, the second extension part 122 is multiple, and the multiple second extension parts 122 are arranged at intervals in the extending direction of the first extension part 112.
[0041] Specifically, as Figure 3 shown, the multiple second extension parts 122 are connected to one first extension part 112 to form a structure similar to the character "卅" to increase the overall structural strength of the blocking assembly 1.
[0042] In other embodiments, as Figure 4 shown, the first extension part 112 is multiple, and the multiple first extension parts 112 are arranged at intervals in the extending direction of the second extension part 122.
[0043] Specifically, as Figure 4 shown, the multiple second extension parts 122 are connected to the multiple first extension parts 112 to form a structure similar to the character "井" to increase the overall structural strength of the blocking assembly 1.
[0044] It is understandable that the sizes of the internal cavities of evaporators 100 of different specifications are different, so the positions and sizes of vortices that may be formed in the evaporator 100 are also different. Therefore, barrier components 1 of different structures can be selected according to evaporators 100 of different specifications to ensure that the barrier components 1 can play a role in preventing the formation of vortices in evaporators 100 of different specifications.
[0045] In some embodiments, in a plane orthogonal to the height direction of the evaporator 100 (eg Figure 2 ), an angle between an extension direction of the first blocking portion 111 and an extension direction of the second blocking portion 121 is greater than or equal to 45° and less than or equal to 90°.
[0046] Specifically, as shown in the figure, the angle between the extension direction of the first blocking portion 111 and the extension direction of the second blocking portion 121 is α, and 45°≤α≤90°.
[0047] It is understandable that the angle between the first blocking portion 111 and the second blocking portion 121 is likely to affect the flow of liquid in the evaporator 100, that is, if the angle between the first blocking portion 111 and the second blocking portion 121 is too small, it will be more difficult for the liquid in the evaporator 100 to flow from top to bottom and pass through the gap between the first blocking portion 111 and the second blocking portion 121, which will easily form an obstruction on the flow path of the liquid in the evaporator 100, which is not conducive to the discharge of the liquid. Therefore, 45°≤α≤90° can not only ensure the smooth flow of the liquid in the evaporator 100, but also effectively ensure that the generation of vortices is avoided in the evaporator 100.
[0048] In some embodiments, in a plane orthogonal to the height direction of the evaporator 100 , a ratio of a projected area of the blocking assembly 1 to a projected area of the cavity of the evaporator 100 is less than or equal to 0.4.
[0049] It can be understood that, as shown in the figure, in the horizontal plane, the larger the projected area of the barrier component 1 and the projected area of the cavity of the evaporator 100, the greater the resistance formed on the flow path of the liquid from top to bottom in the evaporator 100, which is likely to affect the discharge rate of the liquid in the evaporator 100 and reduce production efficiency.
[0050] Preferably, the blocking assembly 1 is integrally formed. It is understandable that the first blocking member 11 and the second blocking member 12 can be manufactured by casting, or the first blocking member 11 and the second assembly can be manufactured by cutting a whole plate to ensure the overall strength of the blocking assembly 1. The first extension portion 112 and the second extension portion 122 can be formed by bending.
[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0054] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0055] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0056] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.
Claims
1. An anti-vortex cavitation device for an evaporator, characterized in that: include: The blocking assembly is located in the cavity of the evaporator and is arranged adjacent to the bottom of the evaporator. The blocking assembly includes a first blocking member and a second blocking member. The first blocking member includes a first blocking portion and a first extending portion connected to each other. The second blocking member includes a second blocking portion and a second extending portion connected to each other. The first blocking portion and the second blocking portion are connected to each other. The first extending portion and the second extending portion are both connected to the evaporator. In a plane orthogonal to the height direction of the evaporator, an extending direction of the first blocking member and an extending direction of the second blocking member form an included angle.
2. The anti-vortex cavitation device for evaporator according to claim 1, characterized in that: There are two first extension parts, which are arranged opposite to each other in the length direction of the first blocking part, and the first extension parts are connected to the inner wall of the evaporator. There are two second extension parts, and the two second extension parts are arranged opposite to each other in the length direction of the second blocking part. The second extension part is connected to the inner wall of the evaporator, and the second extension part is connected to the first extension part.
3. The anti-vortex cavitation device for evaporator according to claim 2, characterized in that: An extending direction of the first extending portion is orthogonal to an extending direction of the first blocking portion, and an extending direction of the second extending portion is orthogonal to an extending direction of the second blocking portion.
4. The anti-vortex cavitation device for evaporator according to claim 3, characterized in that: The first extension portion and the second extension portion are connected to the evaporator by welding.
5. The anti-vortex cavitation device for evaporator according to claim 1, characterized in that: In the height direction of the evaporator, the ratio of the distance from the blocking assembly to the bottom of the evaporator to the height of the evaporator is greater than or equal to 1 / 4 and less than or equal to 1 / 3.
6. The anti-vortex cavitation device for evaporator according to claim 1, characterized in that: There are a plurality of the second extending portions, and the plurality of the second extending portions are arranged at intervals in an extending direction of the first extending portion.
7. The anti-vortex cavitation device for evaporator according to claim 6, characterized in that: There are a plurality of the first extending portions, and the plurality of the first extending portions are arranged at intervals in an extending direction of the second extending portion.
8. The anti-vortex cavitation device for evaporator according to claim 7, characterized in that: In a plane orthogonal to the height direction of the evaporator, an angle between an extending direction of the first blocking portion and an extending direction of the second blocking portion is greater than or equal to 45° and less than or equal to 90°.
9. The anti-vortex cavitation device for evaporator according to claim 8, characterized in that: In a plane orthogonal to the height direction of the evaporator, a ratio of a projected area of the blocking assembly to a projected area of the evaporator cavity is less than or equal to 0.
4.
10. The anti-vortex cavitation device for an evaporator according to any one of claims 1 to 9, characterized in that: The blocking component is integrally formed.