Fuse with protection structure
By using a combination of 304 stainless steel separator and 3A granular molecular sieve in the charging pile fuse, the problems of moisture absorption and harmful gas accumulation in quartz sand are solved, achieving stable performance and long service life of the fuse in high temperature and high humidity environments.
Patent Information
- Application Number
- CN202520601052.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-04-01
AI Technical Summary
Existing charging pile fuses lack moisture-proof design. Quartz sand is easily affected by environmental humidity, which leads to a decrease in insulation and thermal conductivity. Furthermore, the accumulation of harmful gases corrodes the internal structure, shortening the fuse's lifespan.
The spacer shell and the fuse shell are filled with quartz sand and molecular sieve. The spacer shell is made of 304 stainless steel with a through hole diameter of 50μm. The molecular sieve is made of 3A particles, which adsorb moisture and harmful gases, prevent the quartz sand from getting damp, and capture the gases decomposed by electric arc.
It effectively prevents quartz sand from getting damp, maintains stable insulation and thermal conductivity, extends fuse life, prevents corrosion from harmful gases, enhances structural strength, and ensures excellent arc extinguishing and insulation performance in high temperature and high humidity environments.
Smart Images
Figure CN223977885U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of charging pile fuse technology, specifically a fuse with a protective structure. Background Technology
[0002] Quartz sand is filled inside the fuse of the charging pile to absorb and disperse the arc energy generated during the melting process, thereby protecting the circuit.
[0003] However, existing fuses have the following significant drawbacks:
[0004] 1. Lack of moisture-proof design: Quartz sand is easily affected by environmental humidity. After absorbing moisture, its insulation and thermal conductivity will decrease significantly, which will reduce the protective effect of the fuse and may even cause safety hazards.
[0005] 2. Accumulation of harmful gases: During the fusing process, gases produced by the decomposition of the electric arc (such as SO2, H2O, etc.) will remain inside the fuse. Long-term accumulation may corrode the internal structure or affect the performance of the quartz sand, shortening the fuse's lifespan.
[0006] Therefore, we propose a fuse with a protective structure. Utility Model Content
[0007] (a) Technical problems to be solved
[0008] To address the shortcomings of existing technologies, this utility model provides a fuse with a protective structure, which has advantages such as moisture protection and improved protection, and can effectively solve the problems in the background technology.
[0009] (II) Technical Solution
[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a fuse with a protective structure, including a fuse housing, a fuse conductor structure installed inside the fuse housing, metal electrode supports fixedly installed on the outer surfaces of both ends of the fuse housing, a partition shell provided in the fuse housing, a reinforcing column fixedly installed between the outer wall of the partition shell and the inner wall of the fuse housing, the interior of the partition shell filled with quartz sand, a molecular sieve filled between the outer wall of the partition shell and the inner wall of the fuse housing, and a through hole opened in the outer wall of the partition shell.
[0011] Preferably, the particle size of the quartz sand is in the range of 0.3 to 0.6 mm.
[0012] Preferably, the quartz sand is made of silicon dioxide.
[0013] Preferably, the material of the separator shell is 304 stainless steel.
[0014] Preferably, the diameter of the through hole in the separator shell is 50 μm.
[0015] Preferably, the molecular sieve is a 3A particle molecular sieve.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, this utility model provides a fuse with a protective structure, which has the following beneficial effects:
[0018] 1. This type of fuse with a protective structure, by filling the spacer shell and the fuse shell with 3A granular molecular sieve, can effectively adsorb moisture in the environment and gases such as H2O generated during the fusing process, prevent the quartz sand from getting damp, ensure its insulation and thermal conductivity are stable for a long time, and thus improve the reliability of the fuse.
[0019] 2. This type of fuse with a protective structure uses molecular sieves that can not only adsorb moisture but also efficiently capture harmful gases (such as SO2 and H2O) produced by electric arc decomposition, preventing these gases from corroding the internal structure or affecting the performance of the quartz sand, thus significantly extending the service life of the fuse.
[0020] 3. This type of fuse with a protective structure uses a 304 stainless steel separator shell, which is resistant to high temperature and electric arc. At the same time, gas exchange is achieved through 50μm through holes, ensuring that the molecular sieve and quartz sand complement each other without interfering with each other. The design of the reinforcing column enhances the structural strength of the separator shell and prevents the shell from deforming or breaking due to pressure changes during the fusing process.
[0021] 4. This type of fuse with a protective structure uses quartz sand with a particle size strictly controlled between 0.3 and 0.6 mm and made of high-purity silicon dioxide. Combined with the drying effect of molecular sieve, the fuse can maintain excellent arc extinguishing and insulation performance even in harsh environments such as high temperature and high humidity. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of a fuse with a protective structure according to the present invention.
[0023] Figure 2 This is a partial structural diagram of a fuse with a protective structure according to the present invention.
[0024] Figure 3 This utility model relates to a fuse with a protective structure. Figure 2 Top view of the structure.
[0025] Figure 4 This utility model relates to a fuse with a protective structure. Figure 3 Enlarged view of point A in the middle.
[0026] In the diagram: 1. Fuse housing; 2. Metal electrode support; 3. Fuse conductor structure; 4. Quartz sand; 5. Separator shell; 6. Reinforcing column; 7. Molecular sieve; 8. Through hole. Detailed Implementation
[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0028] This embodiment is a fuse with a protective structure.
[0029] like Figure 1-4 As shown, the fuse includes a fuse housing 1, a fuse conductor structure 3 installed inside the fuse housing 1, metal electrode supports 2 fixedly installed on the outer surfaces of both ends of the fuse housing 1, a partition shell 5 provided on the fuse housing 1, a reinforcing column 6 fixedly installed between the outer wall of the partition shell 5 and the inner wall of the fuse housing 1, the interior of the partition shell 5 is filled with quartz sand 4, a molecular sieve 7 is filled between the outer wall of the partition shell 5 and the inner wall of the fuse housing 1, and a through hole 8 is opened on the outer wall of the partition shell 5.
[0030] The particle size of the quartz sand 4 ranges from 0.3 to 0.6 mm; the material of the quartz sand 4 is silicon dioxide; the material of the separator shell 5 is 304 stainless steel; the opening diameter of the through hole 8 in the separator shell 5 is 50 μm; the molecular sieve 7 is a 3A particle molecular sieve.
[0031] It should be noted that this utility model is a fuse with a protective structure. The fuse housing 1, metal electrode support 2, and fuse conductor structure 3 described in this article are all existing technologies and can be effectively known to those skilled in the art. Specific details will not be elaborated further. The quartz sand 4 with a particle size range of 0.3~0.6 mm is made of high-purity silicon dioxide. The separator shell 5 is made of 304 stainless steel, which has high temperature resistance and arc resistance. The opening size of the through hole 8 in the separator shell 5 is 50μm. The molecular sieve 7 is made of 3A, with a pore size of approximately 3A (1A = 0.1 nanometers), or 0.3 nanometers. The molecular sieve 7 is granular to prevent clogging of the micropores. Therefore, the separator shell 5 can separate the quartz sand 4 from the molecular sieve 7. The separator shell 5 encloses the quartz sand 4 to prevent leakage while allowing gas to pass through. The molecular sieve 7 adsorbs arc decomposition gases (such as SO2, H2O, etc.), improving the fuse life. The efficient adsorption of harmful gases by the molecular sieve enhances the reliability of the fuse.
[0032] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A fuse with a protective structure, comprising a fuse shell (1), a fuse conductor structure (3) is installed inside the fuse shell (1), metal electrode supports (2) are fixedly installed on the outer surfaces of both ends of the fuse shell (1), characterized in that: The fuse shell (1) is provided with a partition shell (5), a reinforcing column (6) is fixedly installed between the outer wall of the partition shell (5) and the inner wall of the fuse shell (1), the inside of the partition shell (5) is filled with quartz sand (4), the outer wall of the partition shell (5) and the inner wall of the fuse shell (1) are filled with molecular sieve (7), and the outer wall of the partition shell (5) is provided with a through hole (8).
2. The fuse with a protective structure according to claim 1, characterized in that: The particle size of the quartz sand (4) ranges from 0.3 to 0.6 mm.
3. The fuse with protective structure according to claim 2, characterized in that: The quartz sand (4) is made of silicon dioxide.
4. The fuse with a protective structure according to claim 3, characterized in that: The partition shell (5) is made of 304 stainless steel.
5. The fuse with protective structure according to claim 4, wherein: The opening diameter size of the through hole (8) in the partition shell (5) is 50 μm.
6. The fuse with protective structure according to claim 5, wherein: The molecular sieve (7) is a 3A particle molecular sieve.