Electrically fusible plug and forming method

Abstract

The invention discloses an electric fusible plug forming method, which comprises a core body and a plug column, the core body is arranged in the plug column, a heating wire is arranged on the core body, a binding post is inserted on the plug column, and the heating wire is connected with the binding post; the core body is prepared from the following material components: TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, zirconium dioxide and a curing agent; the plug column is prepared from the following material components: TDE-85 epoxy resin, magnesium carbonate and a curing agent. The high-pressure gas source can bear high back pressure stress, has the characteristics of high strength and rapid thermal melting response, is higher in reliability especially in a complex electromagnetic environment, can improve the reliability of the high-pressure gas source in the complex electromagnetic environment, is simple to package, is easy to store, transport and manage, can reduce the management cost, and is wide in application prospect.

Description

Technical Field

[0001] The present invention particularly relates to an electric fusible plug and a forming method thereof. Background Art

[0002] The electric fusible plug includes a core structure, a plug structure, and the core structure is coated inside the plug structure. The two structures have different formulas. The two structures are formed by combining organic materials, toughening curing agents, thermochemical reactants, and strength enhancers through reasonable proportions and process methods, which meet the two major problems of high structural strength requirements under high back pressure and fast thermal melting response rate.

[0003] The electric fusible plug includes a core structure and a plug structure. The core and plug have small dimensions and high structural strength requirements. The structure must not deform, crack or break under a back pressure of 30MPa and must be airtight. At the same time, it must respond quickly (within 0.5s) under electric heating. Therefore, it is necessary to design a reasonable formula composition and proportion as well as a corresponding processing and molding method to achieve high structural strength and fast melting response performance requirements. The core and plug made of existing materials are prone to deformation, crack and breakage under back pressure. Summary of the invention

[0004] The purpose of the present invention is to provide an electric fusible plug and a molding method, which can withstand high back pressure stress, have high strength and fast thermal melting response characteristics, especially in complex electromagnetic environments, have higher reliability, can improve the reliability of high-pressure gas sources in complex electromagnetic environments, and have simple packaging, easy storage, transportation and management, can reduce management costs, and have broad application prospects.

[0005] The technical solution adopted by the present invention is: An electric fusible plug comprises a core body and a plug post, wherein the core body is arranged in the plug post, a heating wire is arranged on the core body, a terminal is inserted into the plug post, and the heating wire is connected to the terminal post; The material components of the core include: TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, zirconium dioxide, and curing agent; The material components of the plug include: TDE-85 epoxy resin, magnesium carbonate and curing agent.

[0006] Preferably, the heating wire is a resistance wire wrapped around the core.

[0007] Preferably, the composition ratio of TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate and zirconium dioxide in the core is: (25-35): (5-15): (30-40): (20-30).

[0008] Preferably, the curing agent in the core includes methyltetrahydroaniline, N,N-dimethylaniline; The component ratios of TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, zirconium dioxide, methyltetrahydroaniline and N,N-dimethylaniline in the core are: (25~35): (5~15): (30~40): (20~30): 80~90: (0.5~1.5).

[0009] Preferably, the component ratio of TDE-85 epoxy resin and magnesium carbonate in the plug is: (45-55): (45-55).

[0010] Preferably, the curing agent in the plug column is methyltetrahydroaniline or N,N-dimethylaniline; The component ratio of TDE-85 epoxy resin, magnesium carbonate, methyltetrahydroaniline and N,N-dimethylaniline in the plug column is: (45~55): (45~55): (80~90): (0.5~1.5).

[0011] Preferably, a mounting hole is provided on the plug column, the core body is arranged in the mounting hole, and a sealant is provided at the outer end of the mounting hole and arranged outside the core body for sealing the core body in the mounting hole.

[0012] Preferably, the number of core bodies is 2, and each core body is configured with 2 terminals; that is, there are 4 terminals, 2 core bodies are symmetrically arranged in the plug, and 4 terminals are symmetrically arranged between the 2 core bodies.

[0013] Preferably, the core is a cylinder.

[0014] A method for preparing the above-mentioned electric fusible plug comprises the following steps: Prepare a core body and a plug respectively, and install the prepared core body into the installation hole of the plug; The specific steps of preparing the core are: Step 1.1, TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, and zirconium dioxide are uniformly stirred and mixed according to a proportion to form a first mixed solution; Step 1.2, adding two additives, methyltetrahydroaniline and N,N-dimethylaniline, into the first mixed solution, and mixing the first mixed solution, methyltetrahydroaniline and N,N-dimethylaniline according to a certain proportion and stirring them uniformly; Step 1.3, pouring the first mixed liquid with additives into the mold and placing it in a heating furnace for curing; The specific steps for preparing the plug are: Step 2.1, uniformly stirring and mixing TDE-85 epoxy resin and magnesium carbonate according to a proportion to form a second mixed solution; Step 2.2, adding two additives, methyltetrahydroaniline and N,N-dimethylaniline, into the second mixed solution, and mixing the second mixed solution with methyltetrahydroaniline and N,N-dimethylaniline in proportion and stirring evenly; Step 2.3, pour the second mixed liquid with additives into the mold and put it into a heating furnace for curing.

[0015] Preferably, in the step 1.1, TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate and zirconium dioxide are uniformly stirred and mixed in a ratio of (25-35): (5-15): (30-40): (20-30); In the step 1.2, the first mixed solution, methyltetrahydroaniline, and N,N-dimethylaniline are mixed and stirred in a ratio of (95-105): (80-90): (0.5-1.5), and the stirring time shall not be less than 5 minutes. After stirring, no particles visible to the naked eye shall be present. In the step 1.3, the curing time is 25-35 minutes and the curing temperature is 75-85°C; In step 2.1, TDE-85 epoxy resin and magnesium carbonate are uniformly stirred and mixed in a ratio of (45-55): (45-55): In the step 2.2, the second mixed liquid is mixed and stirred evenly with methyltetrahydroaniline and N,N-dimethylaniline in a ratio of (95-105): (80-90): (0.5-1.5), and the stirring time shall not be less than 5 minutes. After stirring, no particles visible to the naked eye shall be present. In the step 2.3, the curing time is 25-35 minutes, and the curing temperature is 75-85°C. The beneficial effects of the present invention are: The core body and the plug in the present invention form a structure of an electric fusible plug. By adopting a combination of organic materials, toughening curing agents, thermochemical reactants, and strength enhancing materials with reasonable components and reasonable proportions, the structure can withstand high back pressure stress and has high strength and rapid thermal melting response characteristics. Especially in complex electromagnetic environments, the reliability is higher and the reliability of high-pressure gas sources in complex electromagnetic environments can be improved. The packaging is simple, and it is easy to store, transport and manage, which can reduce management costs and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the electric fusible plug in the embodiment of the present invention.

[0017] Figure 2 yes Figure 1 Top view of the .

[0018] Figure 3 It is a schematic structural diagram of the core body in the present invention.

[0019] In the figure: 1-core; 2-terminal; 3-plug; 4-heating wire; 5-sealant. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Example 1 An electrical fusible plug, such as Figures 1 to 3 As shown, it comprises a core body 1 and a plug 3, the core body 1 is arranged in the plug 3, a heating wire 4 is arranged on the core body 1, a terminal 2 is inserted on the plug 3, and the heating wire 4 is connected to the terminal 2; The material components of the core 1 include: TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, zirconium dioxide, methyltetrahydroaniline, N,N-dimethylaniline; The material components of the plug 3 include: TDE-85 epoxy resin, magnesium carbonate, methyltetrahydroaniline, and N,N-dimethylaniline.

[0024] Furthermore, the heating wire 4 is a resistance wire wrapped around the core 1 .

[0025] Example 2 On the basis of Example 1, the component ratio of the core is further limited, and the performance of Example 2 after the limitation is better.

[0026] In the core 1, the composition ratio of TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate and zirconium dioxide in the core 1 is 30:10:35:25.

[0027] The curing agent in the core 1 includes methyltetrahydroaniline and N,N-dimethylaniline; The component ratio of TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, zirconium dioxide, methyltetrahydroaniline and N,N-dimethylaniline in the core 1 is 30:10:35:25:85:1.

[0028] Example 3 On the basis of Example 1 or 2, the component ratio of the plug is further limited, and the performance of Example 3 after the limitation is better.

[0029] The component ratio of TDE-85 epoxy resin and magnesium carbonate in the plug 3 is 50:50.

[0030] Furthermore, the curing agent in the plug 3 is methyltetrahydroaniline or N,N-dimethylaniline; The component ratio of TDE-85 epoxy resin, magnesium carbonate, methyltetrahydroaniline and N,N-dimethylaniline in the plug column 3 is 50:50:85:1.

[0031] Furthermore, a mounting hole is provided on the plug 3, the core body 1 is arranged in the mounting hole, and a sealant 5 is provided at the outer end of the mounting hole and arranged outside the core body 1 for sealing the core body 1 in the mounting hole.

[0032] Furthermore, the number of core bodies 1 is 2, and each core body is configured with 2 terminals 2; that is, the number of terminals 2 is 4, the 2 core bodies 1 are symmetrically arranged in the plug 3, and the 4 terminals 2 are symmetrically arranged between the 2 core bodies 1.

[0033] Furthermore, the core 1 is a cylinder.

[0034] Example 4 On the basis of Example 1, the preparation method of the electric fusible plug is further limited, and the performance of Example 4 after the limitation is better.

[0035] A method for preparing the above-mentioned electric fusible plug comprises the following steps: Step 1, prepare the core 1 and the plug 3 respectively, Step 2, insert the prepared core body 1 into the mounting hole of the plug 3; The specific steps of preparing the core 1 are: Step 1.1, TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, and zirconium dioxide are uniformly stirred and mixed according to a proportion to form a first mixed solution; Step 1.2, adding two additives, methyltetrahydroaniline and N,N-dimethylaniline, into the first mixed solution, and mixing the first mixed solution, methyltetrahydroaniline and N,N-dimethylaniline according to a certain proportion and stirring them uniformly; Step 1.3, pouring the first mixed liquid with additives into the mold and placing it in a heating furnace for curing; The specific steps for preparing the plug 3 are: Step 2.1, uniformly stirring and mixing TDE-85 epoxy resin and magnesium carbonate according to a proportion to form a second mixed solution; Step 2.2, adding two additives, methyltetrahydroaniline and N,N-dimethylaniline, into the second mixed solution, and mixing the second mixed solution with methyltetrahydroaniline and N,N-dimethylaniline in proportion and stirring evenly; Step 2.3, pour the second mixed liquid with additives into the mold and put it into a heating furnace for curing.

[0036] Furthermore, in the step 1.1, TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, and zirconium dioxide are uniformly stirred and mixed in a ratio of 30:10:35:25; In the step 1.2, the first mixed solution, methyltetrahydroaniline, and N,N-dimethylaniline are mixed and stirred in a ratio of 100:85:1, and the stirring time shall not be less than 5 minutes, and no particles visible to the naked eye shall be present after stirring; In the step 1.3, the curing time is 30 minutes and the curing temperature is 80°C; In step 2.1, TDE-85 epoxy resin and magnesium carbonate are uniformly stirred and mixed in a ratio of 50:50: In the step 2.2, the second mixed liquid is mixed with methyltetrahydroaniline and N,N-dimethylaniline in a ratio of 100:85:1 and stirred evenly. The stirring time shall not be less than 5 minutes, and no particles visible to the naked eye shall be present after stirring. In the step 2.3, the curing time is 30 minutes and the curing temperature is 80°C.

[0037] The plug is formed by casting process. The mold should have vent holes to ensure the smooth discharge of gas in the mold cavity. To ensure that the glue completely fills the mold, after casting is completed, a pressure of 15N for 5 minutes must be applied to the entire circular surface of the lower end of the plug.

[0038] Working principle of the present invention: The core materials include: TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, zirconium dioxide, methyl tetrahydroaniline, N, N-dimethylaniline. First, TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, and zirconium dioxide are evenly mixed in a ratio of 30:10:35:25. After stirring evenly, add two additives, methyl tetrahydroaniline and N, N-dimethylaniline, to the mixed liquid. The ratio of the mixed liquid to the two additives, methyl tetrahydroaniline and N, N-dimethylaniline, is 100:85:1. Stir evenly again, the stirring time shall not be less than 5 minutes, and there shall be no visible particles after stirring. Pour the mixed liquid with additives into the mold and put it into the heating furnace for curing. The curing time is 30 minutes and the curing temperature is 80°C.

[0039] The plug component materials include TDE-85 epoxy resin, magnesium carbonate, methyltetrahydroaniline, and N,N-dimethylaniline. First, TDE-85 epoxy resin and magnesium carbonate are evenly mixed in a ratio of 50:50. After stirring evenly, two additives, methyltetrahydroaniline and N,N-dimethylaniline, are added to the mixed liquid. The ratio of the mixed liquid to the two additives, methyltetrahydroaniline and N,N-dimethylaniline, is 100:85:1. Stir evenly again, the stirring time shall not be less than 5 minutes, and there shall be no visible particles after stirring. Pour the mixed liquid with additives into the mold and put it into the heating furnace for curing. The curing time is 30 minutes and the curing temperature is 80°C.

[0040] The plug is formed by casting process. The mold should have vent holes to ensure the smooth discharge of gas in the mold cavity. To ensure that the glue completely fills the mold, after casting is completed, a pressure of 15N for 5 minutes must be applied to the entire circular surface of the lower end of the plug.

[0041] In summary, the electric fusible plug is a starting device for high-pressure vessels. Under the condition of electric heating, it starts by hot melting. Its structure consists of an electric heating structure, a core structure, a plug structure and its component ratio. It has high structural strength, can withstand high back pressure stress, and can quickly melt and respond under electric heating (the response time of the rated working voltage state is within 0.5s). This formula solves the problem of high structural strength and fast response melting. The formula of the electric fusible plug core solves the two major problems of high structural strength requirements and fast thermal melting rate under high back pressure. It provides a practical solution for the design and manufacture of electric fusible plugs and realizes the production of electric fusible plug samples; the electric fusible plug can be used in various types of gas source devices of different volumes as a starting device. The mastery of the design and manufacturing technology of the electric fusible plug fills the gap in the domestic electric fusible plug technology. As a starting device for high-pressure gas source, the electric fusible plug has higher reliability in complex electromagnetic environments due to its ultra-insensitive performance, which can improve the reliability of high-pressure gas source in complex electromagnetic environments. Its packaging is simple, easy to store, transport and manage, which can reduce management costs and has broad application prospects.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An electric fusible plug, characterized in that: It comprises a core body (1) and a plug post (3), the core body (1) is arranged in the plug post (3), a heating wire (4) is provided on the core body (1), a terminal post (2) is inserted into the plug post (3), and the heating wire (4) is connected to the terminal post (2); The material components of the core (1) include: TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, zirconium dioxide, and a curing agent; The material components of the plug (3) include: TDE-85 epoxy resin, magnesium carbonate, and curing agent.

2. The electrical fusible plug according to claim 1, characterized in that: The heating wire (4) is a resistance wire wrapped around the core (1).

3. The electrical fusible plug according to claim 1, characterized in that: In the core (1), the composition ratio of TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate and zirconium dioxide in the core (1) is: (25-35): (5-15): (30-40): (20-30).

4. The electrical fusible plug according to claim 1, characterized in that: The curing agent in the core (1) includes methyltetrahydroaniline and N,N-dimethylaniline; The composition ratio of TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, zirconium dioxide, methyltetrahydroaniline and N,N-dimethylaniline in the core (1) is: (25~35): (5~15): (30~40): (20~30): (80~90): (0.5~1.5).

5. The electrical fusible plug according to claim 1, characterized in that: In the plug column (3), the component ratio of TDE-85 epoxy resin and magnesium carbonate in the plug column (3) is: (45-55): (45-55).

6. The electrical fusible plug according to claim 1, characterized in that: The curing agent in the plug (3) is methyltetrahydroaniline or N,N-dimethylaniline; The composition ratio of TDE-85 epoxy resin, magnesium carbonate, methyltetrahydroaniline and N,N-dimethylaniline in the plug column (3) is: (45-55): (45-55): (80-90): (0.5-1.5).

7. The electrical fusible plug according to claim 1, characterized in that: A mounting hole is provided on the plug (3), the core body (1) is arranged in the mounting hole, and a sealant (5) is provided at the outer end of the mounting hole and arranged outside the core body (1) for sealing the core body (1) in the mounting hole.

8. The electrical fusible plug according to claim 1, characterized in that: The number of core bodies (1) is 2, and each core body is provided with 2 terminal posts (2).

9. A method for preparing the electric fusible plug according to claim 1, characterized in that: The following steps are involved: Prepare a core body (1) and a plug (3) respectively, and install the prepared core body (1) into the installation hole of the plug (3); The specific steps of preparing the core (1) are: Step 1.1, TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, and zirconium dioxide are uniformly stirred and mixed according to a proportion to form a first mixed solution; Step 1.2, adding two additives, methyltetrahydroaniline and N,N-dimethylaniline, into the first mixed solution, and mixing the first mixed solution, methyltetrahydroaniline and N,N-dimethylaniline according to a certain proportion and stirring them uniformly; Step 1.3, pouring the first mixed liquid with additives into the mold and placing it in a heating furnace for curing; The specific steps for preparing the plug (3) are: Step 2.1, uniformly stirring and mixing TDE-85 epoxy resin and magnesium carbonate according to a proportion to form a second mixed solution; Step 2.2, adding two additives, methyltetrahydroaniline and N,N-dimethylaniline, into the second mixed solution, and mixing the second mixed solution with methyltetrahydroaniline and N,N-dimethylaniline in proportion and stirring evenly; Step 2.3, pour the second mixed liquid with additives into the mold and put it into a heating furnace for curing.

10. The preparation method according to claim 9, characterized in that: In the step 1.1, TDE-85 epoxy resin, tough unsaturated polyester resin 196, magnesium carbonate, and zirconium dioxide are uniformly mixed in a ratio of (25-35): (5-15): (30-40): (20-30); In the step 1.2, the first mixed solution, methyltetrahydroaniline, and N,N-dimethylaniline are mixed and stirred in a ratio of (95-105): (80-90): (0.5-1.5), and the stirring time shall not be less than 5 minutes. After stirring, no particles visible to the naked eye shall be present. In the step 1.3, the curing time is 25-35 minutes and the curing temperature is 75-85°C; In step 2.1, TDE-85 epoxy resin and magnesium carbonate are uniformly mixed in a ratio of (45-55): (45-55): In the step 2.2, the second mixed liquid is mixed and stirred evenly with methyltetrahydroaniline and N,N-dimethylaniline in a ratio of (95-105): (80-90): (0.5-1.5), and the stirring time shall not be less than 5 minutes. After stirring, no particles visible to the naked eye shall be present. In the step 2.3, the curing time is 25-35 minutes, and the curing temperature is 75-85°C.

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