Novel wind and sand protection filter
Patent Information
- Application Number
- CN202522201467.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-17
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-10-17
AI Technical Summary
[0003]而对于室外的电厂水箱，其排气孔往往也会为风沙的进入提供通道，风沙从排气孔进入水箱后往往成为水质恶化的主要来源，水中的风沙一旦沉积在凝汽器外部换热管上，会影响整个发电机组的换热效率，严重的时候管理单位甚至不得不停机进行清理
本申请的过滤器由洁净气体格、含风沙气体格和过滤格三大部分组成，其中过滤格位于洁净气体格和含风沙气体格之间，洁净气体格与电厂位于户外的水箱上的排气管相连，含风沙气体格上设置有供环境中空气进入的进风口以及可将空气中风沙排出的排尘口。电厂水箱在户外使用的过程，需要从外部环境中引入空气时，含风沙的气体会从进风口先进入到含风沙气体格中，而含风沙气体格中的空气要进入到洁净气体格中必然会流经过滤格，而过滤格具有过滤空气中风沙的能力，在含风沙空气经过过滤格时，风沙会被过滤格截留在含风沙气体格侧，失去风沙的洁净气体则会顺利通过过滤格流向洁净气体格，最后从洁净气体格再顺着排气管进入到水箱内来帮助水箱平衡内部空间气压。本申请的过滤器与户外水箱配合使用时，可有效防止风沙从水箱排气管处进入到水箱内部，影响到发电机组的正常运行。
Smart Images
Figure CN224723833U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power plant water tank technology, and in particular to a novel wind and sand filter. Background Technology
[0002] The water inside the demineralized water tanks and intercooled circulating water tanks (hereinafter collectively referred to as water tanks) in power plants is all demineralized water. Power plants have high requirements for water quality, and the fundamental purpose of using demineralized water is to protect expensive thermal equipment and ensure that the units can operate safely, stably, and efficiently. If ordinary water were used, the impurities in it would cause a series of serious problems. In order to maintain the pressure balance between the internal pressure of the water tank and atmospheric pressure, power plant water tanks are usually equipped with vents.
[0003] For outdoor power plant water tanks, their vents often provide a channel for wind and sand to enter. Once wind and sand enter the water tank through the vents, they often become the main source of water quality deterioration. Once the wind and sand in the water settles on the heat exchange tubes outside the condenser, it will affect the heat exchange efficiency of the entire generator unit. In severe cases, the management unit may even have to shut down the unit for cleaning. Utility Model Content
[0004] This application provides a novel wind and sand filter that can reduce the impact of wind and sand entering the interior of an outdoor power plant water tank through its vent, thus preventing the stable operation of the entire generator set.
[0005] The above-mentioned objective of this application is achieved through the following technical solution: A novel wind and sand filter includes a clean gas compartment, the internal space of which is connected to a water tank exhaust pipe, a wind and sand-containing gas compartment on one side of the clean gas compartment, and a filter compartment with air filtration capability between the clean gas compartment and the wind and sand-containing gas compartment. The clean gas grid and the sand-containing gas grid are both open on their adjacent sides, and the cross-sectional shape of the clean gas grid and the sand-containing gas grid on their adjacent sides is the same as the cross-sectional shape of the filter grid. The sand-containing gas grid is also equipped with an air inlet and a dust outlet, and both the air inlet and the dust outlet can connect the external environment with the internal space of the sand-containing gas grid.
[0006] Furthermore, a connector pipe communicating with its internal space is fixedly installed on one side wall of the clean gas compartment, and the connector pipe is fixedly connected to the water tank exhaust pipe through a flange.
[0007] Furthermore, a filter membrane element is installed inside the filter grid; the filter membrane element includes a membrane skeleton and highly permeable filter cotton, and the highly permeable filter cotton is installed inside the membrane skeleton.
[0008] Furthermore, the clean gas grid, the filter grid, and the sand-containing gas grid are arranged vertically from top to bottom.
[0009] Furthermore, the dust discharge port is located on the lower side wall of the sand-containing gas grid, and the air inlet is located on one of the side walls adjacent to the side wall where the dust discharge port is installed.
[0010] Furthermore, the clean gas grid, the filter grid, and the sand-containing gas grid are arranged sequentially from left to right or from right to left in a horizontal direction.
[0011] Furthermore, the dust outlet is located on the lower side wall of the sand-containing gas grid, and the air inlet is located on the side wall of the sand-containing gas grid away from the filter grid.
[0012] In summary, this application includes at least one of the following beneficial technical effects: The filter of this application consists of three main parts: a clean gas compartment, a sand-laden gas compartment, and a filter compartment. The filter compartment is located between the clean gas compartment and the sand-laden gas compartment. The clean gas compartment is connected to the exhaust pipe on the outdoor water tank of the power plant. The sand-laden gas compartment is equipped with an air inlet for ambient air to enter and a dust outlet for expelling sand from the air. When the power plant water tank is used outdoors, and air needs to be introduced from the external environment, the sand-laden gas will first enter the sand-laden gas compartment through the air inlet. The air in the sand-laden gas compartment must pass through the filter compartment to enter the clean gas compartment. The filter compartment has the ability to filter sand from the air. When the sand-laden air passes through the filter compartment, the sand will be trapped on the sand-laden gas compartment side, while the clean air, free of sand, will flow smoothly through the filter compartment to the clean gas compartment. Finally, from the clean gas compartment, it will enter the water tank through the exhaust pipe to help balance the internal air pressure of the water tank. When used in conjunction with an outdoor water tank, the filter described in this application can effectively prevent wind and sand from entering the water tank through the vent pipe and affecting the normal operation of the generator set. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the structure of one embodiment of this application; Figure 2 This is a schematic diagram of another embodiment of this application; Figure 3 This is a schematic diagram of the structure of the filter membrane element of this application.
[0015] Reference numerals: 1. Clean gas compartment; 2. Gas compartment containing sand and dust; 3. Filter compartment; 4. Air inlet; 5. Dust outlet; 6. Connecting pipe; 7. Filter membrane element; 71. Membrane frame; 711. Main frame; 712. Baffle; 713. Handle; 72. High-permeability filter cotton; 73. Metal filter screen. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.
[0017] like Figure 1 and Figure 2 As shown, this application discloses a novel wind and sand filter, which includes a clean gas compartment 1. The internal space of the clean gas compartment 1 is connected to the exhaust pipe of the water tank. A wind and sand-containing gas compartment 2 is provided on one side of the clean gas compartment 1. A filter compartment 3 with air filtration capability is provided between the clean gas compartment 1 and the wind and sand-containing gas compartment 2. Both the clean gas cell 1 and the sand-containing gas cell 2 have open structures on their adjacent sides, and the cross-sectional shape of the clean gas cell 1 and the sand-containing gas cell 2 on their adjacent sides is the same as the cross-sectional shape of the filter cell 3. The sand-containing gas filter 2 is also equipped with an air inlet 4 and a dust outlet 5, and both the air inlet 4 and the dust outlet 5 can connect the external environment with the internal space of the sand-containing gas filter 2.
[0018] In the above embodiments, the clean gas grid 1 and the sand-containing gas grid 2 of this application are both box-like structures. Their adjacent sides are open and connected to the filter grid 3. In this way, the clean gas grid 1 and the sand-containing gas grid 2 can be connected to form an integral structure with interconnected internal space through the filter grid 3.
[0019] The clean gas compartment 1 is connected to the outdoor water tank exhaust pipe, while the sand-laden gas compartment 2 is equipped with an air inlet 4 and a dust outlet 5. When the power plant water tank is used outdoors, air needs to be introduced from the external environment. Sand-laden air will first enter the sand-laden gas compartment 2 through the air inlet 4. The air in the sand-laden gas compartment 2 must pass through the filter compartment 3 to enter the clean gas compartment 1. The filter compartment 3 has the ability to filter sand from the air. When the sand-laden air passes through the filter compartment 3, the sand is trapped on the sand-laden gas compartment 2 side, while the clean air, freed from sand, flows smoothly through the filter compartment 3 to the clean gas compartment 1. Finally, from the clean gas compartment 1, it enters the water tank through the exhaust pipe to help balance the internal air pressure. When the filter of this application is used in conjunction with the outdoor water tank, it can effectively prevent sand from entering the water tank from the exhaust pipe and affecting the normal operation of the generator set.
[0020] Furthermore, such as Figure 1 and Figure 2 As shown, a connector pipe 6 connected to the internal space of the clean gas compartment 1 is fixedly installed on one side wall. The connector pipe 6 can be fixedly connected to the water tank exhaust pipe through a flange.
[0021] In the above embodiments, the connector pipe 6 on the clean gas grid 1 can be tightly connected to the water tank exhaust pipe through a flange. In this way, the internal space of the water tank located outdoors can be connected to the clean gas grid 1 through its exhaust pipe and connector pipe 6, and the clean air processed by the corresponding filter 3 can flow smoothly from the clean gas grid 1 to the water tank.
[0022] Furthermore, such as Figures 1-3 As shown, a filter membrane element 7 is installed inside the filter grid 3; the filter membrane element 7 includes a membrane frame 71 and a highly permeable filter cotton 72, with the highly permeable filter cotton 72 installed inside the membrane frame 71.
[0023] In the above embodiments, one opposite side of the filter grid 3 of this application is connected to the clean gas grid 1 and the sand-containing gas grid 2, respectively. The filter membrane element 7 is inserted into the filter grid 3 and the two are detachably connected (for example, the filter membrane element 7 can be detachably connected to the filter grid 3 by sliding along its insertion direction, or the filter membrane element 7 can be detachably connected to the filter grid 3 by bolts and nuts after being inserted into the filter grid 3. These detachable connection methods are common implementation methods in the prior art, so this application will not elaborate on them here). This facilitates the subsequent replacement or cleaning of the filter membrane element 7.
[0024] like Figure 3As shown, the filter membrane element 7 includes a membrane frame 71 and a highly permeable filter cotton 72 mounted on the membrane frame 71. The membrane frame 71 includes a main frame 711, and a baffle 712 is installed at one end of the main frame 711 (the baffle 712 serves to position the filter membrane element 7 when it is inserted into the filter grid 3). A handle 713 is provided on the baffle 712 (to facilitate the insertion or removal of the entire filter membrane element 7 from the filter grid 3 by the operator). The highly permeable filter cotton 72 is a common functional material that ensures efficient air filtration while minimizing air resistance. It is widely used in industrial protection, air purification systems, and other fields. However, the highly permeable filter cotton 72 is relatively soft and easily deformed during use. Therefore, a metal filter screen 73 can be added to the main frame 711 to provide fixed support for the highly permeable filter cotton 72.
[0025] In actual use, the size of the high-permeability filter cotton 72 of the filter membrane element 7 should be set according to the air intake of the exhaust port, and the calculation formula is as follows: Sa = Qp / (Qm × η) Sa: High-breathability filter cotton 72 area (unit: ㎡); Qp: Total air intake or exhaust volume at the exhaust port (unit: m³ / s); Qm: Air intake or exhaust volume per square meter of highly breathable filter cotton 72 (unit: m³ / (㎡·s)); η: The contamination index of the highly breathable filter cotton 72.
[0026] Under the same temperature conditions, the air velocity before and after the high-permeability filter cotton 72 can be considered the same. Therefore, the air intake volume and air volume of the high-permeability filter cotton 72 can be replaced by its cross-sectional area, and the above formula can be adjusted as follows: Sa = Π × D / (4 × Qm × η) Sa: Area of highly breathable filter cotton (unit: square meters); D: Engineering diameter of the vent (in meters); Qm: Air intake or exhaust volume per square meter of highly breathable filter cotton 72 (unit: m³ / (㎡·s)); η: The contamination index of highly breathable filter cotton.
[0027] The thickness and contamination index of the filter cotton (i.e., high-permeability filter cotton 72) are determined based on the diameter of the exhaust vent pipe of the power plant water tank and the severity of local wind and sand. The parameters can be selected according to the information in Table 1 or determined by the user after on-site testing (these are all basic operations that can be performed by those skilled in the art based on their own knowledge). Table 1 (Filter Cotton Thickness Comparison Table) 1 ≤DN200 Mild 1cm 6~10 mesh 70%~80% 2 ≤DN200 moderate 1cm 6~10 mesh 50%~70% 3 ≤DN200 Severe 1cm 4~6 mesh 30%~50% 4 DN200<D≤DN500 Mild 2cm 6~10 mesh 70%~80% 5 DN200<D≤DN500 moderate 2cm 6~10 mesh 50%~70% 6 DN200<D≤DN500 Severe 2cm 4~6 mesh 30%~50% 7 ≥DN500 Mild 3cm 4~6 mesh 70%~80% 8 ≥DN500 moderate 3cm 4~6 mesh 50%~70% 9 ≥DN500 Severe 3cm 4~6 mesh 30%~50% Furthermore, such as Figure 1 As shown, the clean gas compartment 1, the filter compartment 3, and the sand-containing gas compartment 2 are arranged vertically from top to bottom.
[0028] In the above embodiments, the filter of this application arranges the clean gas grid 1, the filter grid 3, and the sand-containing gas grid 2 in the manner described above. This allows the filter grid 3 to trap the sand in the sand-containing air, and some of the sand can fall off the filter grid 3 under the action of gravity, which helps to improve the filtration efficiency of the filter grid 3.
[0029] Furthermore, such as Figure 1 As shown, the dust outlet 5 is located on the lower side wall of the sand-containing gas grid 2, and the air inlet 4 is located on one of the side walls adjacent to the side wall where the dust outlet 5 is installed.
[0030] In the above embodiments, the dust discharge port 5 is located on the lower side wall of the sand-containing gas grid 2, which facilitates the discharge of sand from the sand-containing gas grid 2 during subsequent cleaning. The air inlet 4 and the dust discharge port 5 are located on different side walls of the sand-containing gas grid 2, which reduces the mutual interference between the two during the use of the filter.
[0031] Furthermore, such as Figure 2 As shown, the clean gas compartment 1, the filter compartment 3, and the sand-containing gas compartment 2 are arranged horizontally from left to right or from right to left.
[0032] In the above embodiments, the clean gas grid 1, filter grid 3 and sand-containing gas grid 2 of this application are arranged in the manner described above. Similarly, when the sand-containing gas flows through the filter grid 3, most of the sand trapped by the filter grid 3 can automatically fall off the filter grid 3 under the action of gravity, thereby enabling the filter grid 3 to maintain a high-efficiency filtration capacity for sand-containing gas for a long time.
[0033] Furthermore, such as Figure 2 As shown, the dust outlet 5 is located on the lower side wall of the sand-containing gas grid 2, and the air inlet 4 is located on the side wall of the sand-containing gas grid 2 away from the filter grid 3.
[0034] In the above embodiments, the sand and dust in the sand-containing gas filter 2 are mainly concentrated on its lower sidewall. This application places the dust outlet 5 on the lower sidewall of the sand-containing gas filter 2 to facilitate the discharge of the sand and dust inside. The air inlet 4 is placed on the sidewall of the sand-containing gas filter 2 away from the filter 3, so that the gas flowing in from the air inlet 4 can directly flow to the filter 3. Compared to placing the air inlet 4 on the upper sidewall of the sand-containing gas filter 2, the gas delivery is smoother. Furthermore, since the air inlet 4 and the dust outlet 5 are located on different sidewalls of the sand-containing gas filter 2, the mutual interference between them can also be reduced during filter use.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 application.
Claims
1. A novel wind and sand filter, characterized in that: It includes a clean gas compartment, the internal space of which is connected to the water tank exhaust pipe. One side of the clean gas compartment is provided with a sand-containing gas compartment, and a filter compartment with air filtration capability is provided between the clean gas compartment and the sand-containing gas compartment. The clean gas grid and the sand-containing gas grid are both open on their adjacent sides, and the cross-sectional shape of the clean gas grid and the sand-containing gas grid on their adjacent sides is the same as the cross-sectional shape of the filter grid. The sand-containing gas grid is also equipped with an air inlet and a dust outlet, and both the air inlet and the dust outlet can connect the external environment with the internal space of the sand-containing gas grid.
2. The novel wind and sand filter according to claim 1, characterized in that: A connector pipe connected to the internal space of the clean gas compartment is fixedly installed on one side wall of the compartment. The connector pipe can be fixedly connected to the water tank exhaust pipe via a flange.
3. The novel wind and sand filter according to claim 2, characterized in that: The filter compartment is equipped with a filter membrane element; the filter membrane element includes a membrane frame and a highly permeable filter cotton, the highly permeable filter cotton being installed inside the membrane frame.
4. The novel wind and sand filter according to any one of claims 1 to 3, characterized in that: The clean gas grid, the filter grid, and the sand-containing gas grid are arranged vertically from top to bottom.
5. The novel wind and sand filter according to claim 4, characterized in that: The dust discharge port is located on the lower side wall of the sand-containing gas grid, and the air inlet is located on one of the side walls adjacent to the side wall where the dust discharge port is installed.
6. The novel wind and sand filter according to any one of claims 1 to 3, characterized in that: The clean gas grid, the filter grid, and the sand-containing gas grid are arranged in a horizontal direction from left to right or from right to left.
7. The novel wind and sand filter according to claim 6, characterized in that: The dust discharge port is located on the lower side wall of the sand-containing gas grid, and the air inlet is located on the side wall of the sand-containing gas grid away from the filter grid.