Capillary drainage two-fluid thermal control change-over valve

Abstract

The invention relates to the field of thermal control change-over valves, and discloses a capillary drainage double-fluid thermal control change-over valve which comprises a valve body, a guide pipe, a valve element, a capillary material, a metal elastic piece and a diffuser. The load leading-in end, the load leading-out end and the valve element hole of the valve body are used for containing and protecting internal assemblies such as the valve element. And the guide pipe is used for accommodating methanol and naphtha solution and realizing communication between the valve body and the diffuser. The valve element is formed by combining a hard pipe and a capillary material and is used for controlling fluid to achieve the double-fluid conversion effect. The capillary material is formed by mixing and sintering powder such as polyurethane, nylon and PP. The metal elastic piece is composed of a porous metal plate, a novel catalyst piece and a flexible connecting rod and used for driving the flexible connecting rod to twitch the valve element back and forth through the fact that the thermal deformation porous metal plate is bent in the two opposite directions, and the purpose of double-fluid conversion is achieved. The diffuser is composed of a shell, a methanol solution diffuser body, a naphtha solution diffuser body and a middle partition plate and used for temporarily storing the solution till the solution is volatilized into fuel steam participating in the catalytic combustion reaction.

Description

[0001] The invention relates to a double-fluid thermal control conversion valve with capillary drainage, belonging to the field of thermal control conversion valves. Background Art

[0002] Catalytic combustion is a new type of combustion method that releases energy by allowing fuel and oxygen to undergo oxidation reactions at relatively low temperatures through the addition of catalysts. Methanol and nano-platinum cannot react normally at room temperature and require additional preheating treatment. However, methanol reacts with oxygen at high temperatures to easily generate formaldehyde, formic acid and other toxic and harmful substances that harm the environment and human health. To avoid this, the present invention provides a capillary drainage dual-fluid thermal control conversion valve, which uses a thermal control valve to switch the fuel flow channel to convert methanol into naphtha solution, ensuring safety and environmental protection.

[0003] Patent CN92101005.2 discloses a heating thermal control valve, which uses thermodynamic principles and the characteristics of easy deformation of the membrane to automatically close and open the valve during the entire heating process, thereby achieving the purpose of both ensuring heating and improving efficiency. However, this type of technology cannot achieve control of multi-fluid flow conditions.

[0004] Patent CN202210614487.7 discloses an atomizer core, an atomizer, and an atomizer device. Through the capillary drainage structure of the atomization layer, the atomizer core can further refine the atomization medium flowing into the liquid inlet hole, and there will be no impurities, particles, etc. that affect the aerosol, ensuring its purity and safety, so that the absorption efficiency of the atomizer is improved and the safety is good. This type of technology uses the capillary drainage structure to further refine and transport the atomized medium.

[0005] Patent CN202110909756.8 discloses an automatic cleaning device, in which a fluid conversion device drives a rotating component to rotate in a fixed housing, thereby connecting different connecting holes on the component with different connecting pipes on the fixed housing to achieve fluid conversion. However, this type of technology cannot control the flow rate and flow velocity of the fluid during use. If there is a trace demand, the flow velocity under high pressure control often causes the fluid to spray out and overflow quickly.

[0006] In summary, there is still a lack of thermal control valve technology that can achieve dual-fluid conversion through capillary drainage structure based on thermodynamic principles and the characteristics of metal deformation. Summary of the invention

[0007] In view of the deficiencies of the prior art in the above-mentioned background technology, the present invention provides a dual-fluid thermal control conversion valve with capillary drainage, which can realize the deformation of metal springs in a high-temperature environment, thereby driving the flexible connecting rod to pull the valve core, thereby achieving the effect of dual-fluid conversion, and through the capillary structure drainage, adsorbing the fuel vapor volatilized by the diffuser to participate in the catalytic combustion reaction.

[0008] To achieve the above object, the technical solution of the present invention is as follows: a capillary drainage dual-fluid thermal control switching valve is composed of a valve body, a conduit, a valve core, a capillary material, a metal spring and a diffuser.

[0009] The valve body is loaded with an inlet end, an outlet end and a valve core hole, and its function is to accommodate and protect the valve core and other internal components. The valve body is a hard or soft chamber. The hard chamber has good high temperature performance and high surface hardness to avoid being affected by the heat release of the catalytic combustion reaction and because its hard material can better protect the internal components, it is preferably a 4mm thick acrylic plate. The soft chamber has good sealing and temperature resistance to prevent liquid overflow during the operation of the thermal control conversion valve and avoid the valve from being affected by the heat release of the catalytic combustion reaction. It is preferably nitrile rubber NBR. An O-ring is provided inside the valve body close to the valve core hole to prevent the fluid from overflowing from the valve core hole along the valve core during the contact and separation friction of the capillary material.

[0010] The conduit is used to contain methanol and naphtha solution and realize the communication between the valve body and the diffuser. The conduit has a certain tolerance to the contained liquid, and has an inner diameter of 1-10 mm and a wall thickness of 1-3 mm, preferably a polyurethane tube with an inner diameter of 2 mm and a wall thickness of 1 mm.

[0011] The valve core is composed of a hard tube and a capillary material, and its function is to passively realize the contact and separation of the capillary material. The fluid flows out smoothly through the capillary materials in contact with each other, or the fluid is blocked by the hard tube due to the separation of the capillary material and cannot flow out smoothly, thereby controlling the fluid outflow to achieve the effect of dual fluid conversion. The hard tube has the characteristic of low thermal conductivity to avoid affecting the catalytic combustion reaction and causing heat loss. It is preferably a quartz tube with a diameter of 10mm and a thermal conductivity of 1W / m·K.

[0012] The capillary material is made of a mixture of polyurethane, nylon, PP and other powders, and is distributed in an arc shape on the side where the inlet and outlet ends are attached to the valve core, and in a circular ring shape at the combination of the inside of the valve core and the hard tube. The thickness of the capillary material at the two places is suitable so that the capillary material inside the valve core is in good contact with the capillary material on the side where the inlet and outlet ends are attached to the valve core during the back and forth movement of the valve core, so that the fluid can flow out smoothly. The function is to drain and adsorb, control its flow rate and flow rate, and make a trace amount of it flow out through the catheter to the diffuser.

[0013] The metal dome is composed of a porous metal plate, a new catalyst sheet and a flexible connecting rod. Its function is to use its thermal deformation to bend the porous metal plate in two opposite directions to drive the flexible connecting rod to pull the valve core back and forth to achieve the purpose of dual fluid conversion. The porous metal plate is a metal plate with a plurality of through holes, the aperture of which is 1-20mm, preferably 8-12mm, which plays the role of exchanging oxygen and fuel vapor. One side of the new catalyst sheet is adhered to the porous metal plate with heat-resistant glue, and the 1:1 mixture of solid hot melt adhesive particles and nano platinum is sprayed along the set path on the opposite side. In order to spray enough mixture on the limited area of ​​the new catalyst sheet to release a large amount of heat to melt the solid hot melt adhesive particles, a curved and circuitous path is selected. The reaction between methanol solution and nano-platinum can release a large amount of heat. According to the thermoplasticity of hot melt adhesive, solid hot melt adhesive particles are molten by high temperature, and the porous metal plate is deformed by reverse bending, driving the flexible connecting rod to pull the valve core, converting the fuel from methanol solution to naphtha solution. The heat released by the reaction gradually decreases, and the molten hot melt adhesive is cooled and solidified into a solid state. At this point, the hot melt adhesive firmly adheres the nano-platinum to the new catalyst sheet, playing the role of providing a heat source for the deformation of the metal shrapnel. The flexible connecting rod is both rigid and flexible, which can support the connection between the metal shrapnel and the valve core and pull the valve core due to the deformation of the porous metal plate. It is preferably iron wire or copper wire. Although the metal thermal conductivity is large, the heat conducted by its small volume as the main influencing factor is also low.

[0014] The diffuser is composed of a shell, a methanol solution diffuser, a naphtha solution diffuser and a middle partition, and its function is to temporarily store the solution until it volatilizes into fuel vapor participating in the catalytic combustion reaction. The shell plays the role of accommodating and protecting internal parts such as the dual-fluid diffuser. The methanol solution diffuser is composed of a diffusion material with small and dense pores, preferably a glass fiber felt with a porosity of 80%. A number of cylindrical protrusions of the same material are arranged on a flat surface on one side, and the total area of ​​the circular surface exposed on the surface is such that the fuel vapor volatilized and diffused by the methanol solution is greater than or equal to the fuel vapor participating in the catalytic combustion reaction. The height of the protrusion is preferably not more than the surface of the diffuser after assembly. The adjacent side or the opposite side of the flat surface is connected to a conduit for accommodating the methanol solution, which plays the role of not destroying the integrity of the main diffusion surface and introducing the methanol solution into the corresponding diffuser. The naphtha solution diffuser is composed of a diffuser material with large pores and sparseness, preferably a ceramic fiber felt with a porosity of 70%. The naphtha diffuser is provided with a circular through hole corresponding to the cylindrical protrusion position of the methanol solution diffuser. The aperture is the sum of the cross-sectional diameter and the thickness of the partition, and the thickness is the difference between the cylindrical height and the thickness of the partition. The partition has good tolerance and sealing properties to the separated solution to prevent the two fluids from miscible and reacting. The preferred thickness is a 2mm polypropylene plate. The partition is filled between the methanol solution diffuser and the naphtha solution diffuser, and its shape fits the two diffusers after assembly.

[0015] The beneficial effect of the present invention is that it provides a dual-fluid thermal control conversion valve with capillary drainage, which realizes dual-fluid conversion to avoid the production of toxic substances. The capillary material drainage adsorbs and controls the fluid flow rate. Trace fuel is temporarily stored in the diffuser until it evaporates into fuel vapor that participates in the catalytic combustion reaction. The heat released by the reaction is used as a heat source for the deformation of the metal spring, thereby realizing a safe and stable cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the capillary drainage dual-fluid thermal control switching valve of the present invention.

[0017] Figure 2 It is a specific structural diagram of the diffuser of the present invention.

[0018] Figure 3 It is a specific structural diagram of the metal spring of the present invention.

[0019] Figure 1 Middle: 1. valve body, 2. valve core hole, 3. guide tube, 4. valve core, 5. capillary material, 6. metal spring, 7. flexible connecting rod.

[0020] Figure 2 Middle: 8. partition, 9. methanol solution diffuser, 10. naphtha solution diffuser.

[0021] Figure 3 Chinese: 11. Porous metal plate, 12. New catalyst sheet, 13. Mixture of hot melt adhesive and nano-platinum. DETAILED DESCRIPTION

[0022] The specific implementation method of the present invention is further described below in conjunction with the accompanying drawings:

[0023] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a capillary drainage dual-fluid thermal control switching valve is composed of a valve body (1), a conduit (3), a valve core (4), a capillary material (5), a metal spring (6) and a diffuser.

[0024] The valve body (1) is loaded with an inlet end, an outlet end and a valve core hole (2), and serves to accommodate and protect internal components such as the valve core (4). The valve body (1) is a hard or soft chamber. The hard chamber has good high temperature performance and high surface hardness to avoid being affected by the heat release of the catalytic combustion reaction and because its hard material can better protect the internal components, it is preferably a 4mm thick acrylic plate. The soft chamber has good sealing and temperature resistance to prevent liquid from overflowing during the operation of the thermal control conversion valve and to avoid the inside of the valve from being affected by the heat release of the catalytic combustion reaction, and is preferably nitrile rubber NBR. An O-ring is provided inside the valve body (1) close to the valve core hole (2) to prevent the fluid from overflowing from the valve core hole (2) along the valve core (4) during the contact and separation friction of the capillary material (5).

[0025] The conduit (3) is used to contain methanol and naphtha solution and realize the connection between the valve body (1) and the diffuser. The conduit (3) has a certain tolerance to the contained liquid, and has an inner diameter of 1-10 mm and a wall thickness of 1-3 mm, preferably a polyurethane tube with an inner diameter of 2 mm and a wall thickness of 1 mm.

[0026] The valve core (4) is composed of a hard tube and a capillary material (5), and functions to passively realize the contact and separation of the capillary material (5), so that the fluid flows out smoothly through the capillary materials (5) in contact with each other, or the fluid is blocked by the hard tube due to the separation of the capillary material (5) and cannot flow out smoothly, thereby controlling the fluid outflow to achieve the effect of dual fluid conversion. The hard tube has the characteristic of low thermal conductivity to avoid affecting the catalytic combustion reaction and causing heat loss, and is preferably a quartz tube with a diameter of 10 mm and a thermal conductivity of 1 W / m·K.

[0027] The capillary material (5) is formed by mixing and sintering powders of polyurethane, nylon, PP, etc., and is distributed in an arc shape at the side where the inlet and outlet ends are attached to the valve core (4), and in a ring shape at the combination of the inside of the valve core (4) and the hard tube. The thickness of the capillary material (5) at the two locations is such that the capillary material (5) inside the valve core (4) and the capillary material (5) at the side where the inlet and outlet ends are attached to the valve core (4) during the back and forth movement of the valve core (4) are in good contact, and the fluid flows out smoothly. The function is to drain and adsorb, control the flow rate and flow rate, and make a trace amount of fluid flow out through the conduit (3) to the diffuser.

[0028] The metal shrapnel (6) is composed of a porous metal plate (11), a novel catalyst sheet (12) and a flexible connecting rod (7). The function is to utilize the thermal deformation of the porous metal plate (11) to bend in two opposite directions to drive the flexible connecting rod (7) to pull the valve core (4) back and forth, thereby achieving the purpose of dual fluid conversion. The porous metal plate (11) is a metal plate with a plurality of through holes, the aperture of which is 1-20 mm, preferably 8-12 mm, which plays the role of exchanging oxygen and fuel vapor. One side of the novel catalyst sheet (12) is adhered to the porous metal plate (11) by heat-resistant glue, and a 1:1 mixture (13) of solid hot melt adhesive particles and nano platinum is sprayed along a set path on the opposite side. In order to spray a sufficient amount of the mixture (13) on the limited area of ​​the novel catalyst sheet (12) to release a large amount of heat to melt the solid hot melt adhesive particles, a curved and circuitous path is selected. The reaction between methanol solution and nano-platinum can release a large amount of heat. According to the thermoplasticity of the hot melt adhesive, the solid hot melt adhesive particles are molten by high temperature, and the porous metal plate (11) is bent in the opposite direction to deform, driving the flexible connecting rod (7) to pull the valve core (4), and the fuel is converted from methanol solution to naphtha solution. The heat released by the reaction gradually decreases, and the molten hot melt adhesive is solidified by cooling. At this point, the hot melt adhesive firmly adheres the nano-platinum to the new catalyst sheet (12), which plays a role in providing a heat source for the deformation of the metal spring (6). The flexible connecting rod (7) is both rigid and flexible, and can support the connection between the metal spring (6) and the valve core (4) and pull the valve core (4) due to the deformation of the porous metal plate (11). It is preferably iron wire or copper wire. Although the metal thermal conductivity is relatively large, the heat conducted by the small volume as the main influencing factor is also relatively low.

[0029] The diffuser is composed of a shell, a methanol solution diffuser (9), a naphtha solution diffuser (10) and a middle partition (8), and is used to temporarily store the solution until it volatilizes into fuel vapor participating in the catalytic combustion reaction. The shell plays the role of accommodating and protecting internal parts such as the dual-fluid diffuser. The methanol solution diffuser (9) is composed of a diffusion material with small and dense pores, preferably a glass fiber felt with a porosity of 80%. A plurality of cylindrical protrusions of the same material are arranged on a flat surface on one side, and the total area of ​​the circular surface exposed on the surface is such that the fuel vapor volatilized and diffused by the methanol solution is greater than or equal to the amount required for participating in the catalytic combustion reaction, and the height of the protrusion is preferably not higher than the surface of the diffuser after assembly. The adjacent side or the opposite side of the flat surface is connected to a conduit (3) containing the methanol solution, which plays the role of not destroying the integrity of the main diffusion surface and introducing the methanol solution into the corresponding diffuser. The naphtha solution diffuser (10) is composed of a diffuser material with large pores and sparseness, preferably a ceramic fiber felt with a porosity of 70%. The naphtha diffuser (10) is provided with a circular through hole corresponding to the cylindrical protrusion position of the methanol solution diffuser (9). The aperture is the sum of the cross-sectional diameter and the thickness of the partition (8), and the thickness is the difference between the cylindrical height and the thickness of the partition (8). The partition (8) has good tolerance and sealing properties to the separated solution to prevent the two fluids from miscible and reacting. The preferred thickness is a polypropylene plate of 2 mm. The partition (8) is filled between the methanol solution diffuser (9) and the naphtha solution diffuser (10), and its shape fits the two diffusers after assembly.

[0030] When the device is working, the deformation of the metal spring causes the valve core to shift, the capillary materials on one side of the methanol solution contact each other, the methanol solution flows out smoothly and flows through the conduit to the methanol solution diffuser, and is adsorbed and drained to the exposed cylindrical protrusion surface by the methanol solution diffuser. The volatilized methanol fuel vapor diffuses through the pores of the porous metal plate to the new catalyst sheet, reacts with nano-platinum, and releases a large amount of heat that makes the hot melt adhesive solid particles tend to melt, reaching the critical point where the particles maintain a solid state, and the particles gradually melt to a molten state. After 3 minutes of reaction, the deformation temperature reaches 450℃, the metal spring deforms, and drives the flexible connecting rod to pull the valve core to convert the fluid into naphtha solution, realizing dual fluid conversion, the capillary materials on one side of the naphtha solution contact each other, the fuel flows out smoothly and flows through the conduit to the naphtha solution diffuser, and is adsorbed and drained to the surface by the naphtha solution diffuser, and the volatilized naphtha fuel vapor diffuses through the pores of the porous metal plate to the new catalyst sheet, catalytic combustion reaction occurs, and the catalyst sheet is red hot for a long time. When the naphtha vapor evaporates completely and the reaction temperature drops, the molten hot melt adhesive cools and solidifies, adhering the nano-platinum to the surface of the new catalyst, and the metal shrapnel rebounds in the opposite direction.

Claims

1. The capillary drainage dual-fluid thermal control conversion valve is composed of a valve body, a conduit, a valve core, a capillary material, a metal spring and a diffuser; the valve body is loaded with an inlet end, an outlet end and a valve core hole, which are used to accommodate and protect the valve core and other internal components; the valve body is a hard or soft chamber, the hard chamber has good high temperature performance and high surface hardness to avoid being affected by the heat release of the catalytic combustion reaction and because its hard material can better protect the internal components, the soft chamber has good sealing and temperature resistance to prevent liquid overflow during the operation of the thermal control conversion valve and avoid the valve from being affected by the heat release of the catalytic combustion reaction; an O-ring is arranged close to the valve core hole inside the valve body to prevent the fluid from overflowing from the valve core hole along the valve core during the contact and separation friction of the capillary material; the conduit contains methanol and naphtha solution, and The valve body and the diffuser are connected; the conduit has a certain tolerance to the liquid it contains; the valve core is composed of a hard tube and a capillary material. The contact and separation of the capillary material are passively realized, and the fluid flows out smoothly through the capillary materials in contact with each other, or the fluid cannot flow out smoothly due to the obstruction of the hard tube due to the separation of the capillary material, thereby controlling the fluid outflow to achieve the effect of dual fluid conversion; the hard tube has the characteristic of low thermal conductivity to avoid affecting the catalytic combustion reaction and causing heat loss; the capillary material is sintered by mixing powders of polyurethane, nylon, PP, etc., and is distributed in an arc shape at the inlet and outlet ends that fit the valve core, and in a circular shape at the combination of the valve core and the hard tube. The thickness of the capillary material at the two places is determined by the capillary material inside the valve core and the guide tube during the back and forth movement of the valve core. The inlet and outlet ends are in good contact with the capillary material on one side of the valve core, so that the fluid can flow out smoothly. It is used for drainage adsorption, controlling its flow rate and flow rate, so that a small amount of it flows out through the conduit to the diffuser; the metal spring is composed of a porous metal plate, a new catalyst plate and a flexible connecting rod. The thermal deformability of the porous metal plate is used to bend in two opposite directions to drive the flexible connecting rod to pull the valve core back and forth, so as to achieve the purpose of dual fluid conversion; the porous metal plate is a metal plate with a plurality of through holes for exchanging oxygen and fuel vapor; one side of the new catalyst plate is adhered to the porous metal plate with heat-resistant glue, and the 1:1 mixture of solid hot melt adhesive particles and nano platinum is sprayed along the set path on the opposite side, so as to spray a sufficient amount of the mixture on the limited area of ​​the new catalyst plate to release the solid hot melt adhesive particles to melt A large amount of heat is generated by the reaction of methanol solution and nano-platinum, and a curved and circuitous path is selected; a large amount of heat can be released by the reaction of methanol solution and nano-platinum. According to the thermoplasticity of hot melt adhesive, solid hot melt adhesive particles are molten by high temperature, and the porous metal plate is deformed by reverse bending, driving the flexible connecting rod to pull the valve core, and the fuel is converted from methanol solution to naphtha solution. The heat released by the reaction gradually decreases, and the molten hot melt adhesive is solidified by cooling. At this point, the hot melt adhesive firmly adheres the nano-platinum to the new catalyst sheet, providing a heat source for the deformation of the metal shrapnel; the flexible connecting rod is both rigid and flexible, which can not only support the connection between the metal shrapnel and the valve core, but also pull the valve core due to the deformation of the porous metal plate. The flexible connecting rod can be made of metal material. Although its metal thermal conductivity is relatively large, the heat conducted by its small volume as the main influencing factor is also relatively low;The diffuser is composed of an outer shell, a methanol solution diffuser, a naphtha solution diffuser and an intermediate partition, and is used to temporarily store the solution until it evaporates into fuel vapor participating in the catalytic combustion reaction; the outer shell accommodates and protects internal parts such as the dual-fluid diffuser; the methanol solution diffuser is composed of a diffusion material with small and dense pores, and a plurality of cylindrical protrusions of the same material are arranged on a flat surface on one side, and the total area of ​​the circular surface exposed on the surface is such that the fuel vapor volatilized and diffused by the methanol solution is greater than or equal to that required for participating in the catalytic combustion reaction, and the height of the protrusion is preferably not more than the surface of the diffuser after assembly; the adjacent side or the opposite side of the flat surface is adjacent to the side containing the methanol solution The liquid conduit is connected without destroying the integrity of the main diffusion surface and introducing the methanol solution into the corresponding diffuser; the naphtha solution diffuser is composed of a diffusion material with large pores and sparseness, and a circular through hole corresponding to the cylindrical protrusion position of the methanol solution diffuser is provided on the naphtha diffuser. The aperture is the sum of the cross-sectional diameter and the thickness of the partition, and the thickness is the difference between the height of the cylinder and the thickness of the partition; the partition has good tolerance and sealing to the separated solution to prevent the two fluids from miscible and reacting. The partition is filled between the methanol solution diffuser and the naphtha solution diffuser, and its shape fits the two diffusers after assembly. ;

Images