A method for manufacturing a filament spiral heat exchange component for a tubular heat exchanger

Abstract

A method for manufacturing a filigree spiral heat exchange assembly for a tubular heat exchanger relates to the field of heat exchange devices. This method is primarily designed to address the poor heat exchange efficiency of existing tubular heat exchangers. Metal wire A is wound into a helical spring-shaped side wire, while a U-shaped core wire is made of metal wire B. One side wire of the U-shaped core wire is inserted inside the helical spring-shaped side wire, while the other side wire is positioned outside the helical spring-shaped side wire. With the helical spring-shaped side wire sandwiched between the U-shaped core wire, the closed end of the U-shaped core wire is attached to a hook at the end of a rotating shaft of a rotating device, while the free end is secured to a fixture. The running wheels at the bottom of the fixture rest on a track, with a spring connected between the fixture and the track end. The rotating device rotates the U-shaped core wire, causing it to entangle with the helical spring-shaped side wire, entangled with the U-shaped core wire and the helical spring-shaped side wire. The U-shaped core wire is then cut to the desired length and installed in the heat exchange tube. This improves the heat exchange efficiency of the heat exchanger.

Description

Technical field:

[0002] The present invention relates to the field of heat exchange devices, and in particular to a method for manufacturing a heat exchange component for a tubular heat exchanger capable of improving heat exchange efficiency. Background technology:

[0004] Tubular heat exchangers are currently widely used in industrial production due to their simple, compact structure and low cost. They are mainly composed of a shell, tube sheets, heat exchange tubes, and heads. The required materials can be ordinary carbon steel, copper, or stainless steel.

[0005] During heat exchange, the cooled fluid medium enters from the tube side inlet, flows in the heat exchange tube, and then flows out from the tube side outlet; another cooling fluid medium enters from the shell side inlet and flows out from the shell side outlet.

[0006] However, existing tubular heat exchangers still have the following shortcomings: the heat exchange process is short, and the cooled medium only exchanges heat in the part of the heat exchange tube that contacts the tube wall. The closer the medium is to the center of the heat exchange tube, the worse the cooling effect. This is because the cooled medium is mostly in a laminar state within the shorter tube path, which affects the heat transfer of the cooled medium, resulting in relatively poor heat exchange efficiency.

[0007] In order to compensate for this defect, the traditional approach is to lengthen the tube path as much as possible and increase the number of tubes to increase the heat exchange area, which increases the volume and cost of the heat exchanger.

[0008] There are also fins welded to the inner or outer wall of the heat exchange tube. Welding fins increases the cost and weight of the heat exchanger, and the heat transfer efficiency is not significantly improved. In addition, welding inner fins to the inner wall of the heat exchange tube is complex and difficult to process. Summary of the invention:

[0010] The technical problem to be solved by the present invention is to provide a method for manufacturing a filigree spiral heat exchange component for a tubular heat exchanger, and to install the heat exchange component in the heat exchange tube of the tubular heat exchanger. In this way, the heat exchange efficiency of the tubular heat exchanger can be significantly improved without changing the overall volume of the heat exchanger.

[0011] The above purpose is achieved as follows:

[0012] The filigree spiral heat exchange assembly described herein includes a helical spring-shaped edge wire made of metal A and a U-shaped core wire made of metal B. Metal A and metal B can be made of the same or different materials. Metal A is preferably made of a material with good thermal conductivity, such as copper; metal B is preferably made of a material with good strength, such as stainless steel.

[0013] The specific production method includes: firstly winding a metal wire A having a diameter of 0.3-1.5 mm into a spiral spring-shaped side wire having a diameter of 5-25 mm; the U-shaped core wire is made of a metal wire B having a diameter of 0.8-3 mm; the length of the U-shaped core wire is greater than the length of the spiral spring-shaped side wire wound from the metal wire A; one side wire of the U-shaped core wire is inserted into the interior of the spiral spring-shaped side wire, and the other side wire of the U-shaped core wire is located outside the spiral spring-shaped side wire; providing a hook at the end of the rotating shaft of the rotating device; then, with the U-shaped core wire clamping the spiral spring-shaped side wire wound from the metal wire A, the closed end of the horizontally placed U-shaped core wire is connected to the hook at the end of the rotating shaft of the rotating device; and the free end of the U-shaped core wire is fixed to a fixture, with the axial centerline of the U-shaped core wire coinciding with the extended axial centerline of the rotating shaft of the rotating device; and the bottom of the fixture is provided with a running wheel or a slider, which is placed on a track or a slideway; the end of the fixture facing away from the U-shaped core wire fixes the spring, and the other end of the spring is fixed to the end of the track. The rotating device rotates the U-shaped core wire, causing it to intertwine with the helical spring-shaped side wires. After winding, the U-shaped core wire forms a double helix structure. One side wire, located inside the helical spring-shaped side wire, is the inner helix, while the other side wire, located outside the helical spring-shaped side wire, is the outer helix. The helical spring-shaped side wire, held in place by the inner and outer helices, undergoes "re-helicaling" and is evenly distributed around the U-shaped core wire in a "petal-like" pattern. This is why the side wires are called flower wires. The flower wire helix coincides with the "helical axis" of the double helix core structure, consisting of the inner and outer helices, and has a consistent pitch. They entangle to form a multi-helix structure. The double helix core structure secures the flower wire axially and provides traction during installation.

[0014] The filament spiral heat exchange component manufactured according to the above-mentioned dimensions can be used in heat exchange tubes with a diameter of 10-50 mm.

[0015] When in use, the diameter of the filament spiral heat exchange component needs to be slightly larger than the diameter of the heat exchange tube, and then it is cut into the required length and installed in the heat exchange tube. Since the envelope circle diameter of the wound heat exchange component is slightly larger than the inner diameter of the heat exchange tube, when it is installed, mutual squeezing is generated between the filament and the tube wall. Under the action of this squeezing force, the heat exchange component is firmly constrained in the heat exchange tube.

[0016] The advantages of the present invention are: the filigree spiral heat exchange component is installed in the heat exchange tube of the tubular heat exchanger, and the cooled medium in the heat exchange tube changes its original laminar flow structure under the strong action of the heat exchange component and becomes a turbulent turbulent state, so that the uniformity of the temperature of the cooled medium is improved and the heat exchange rate is increased, thereby effectively improving the heat exchange efficiency of the heat exchanger.

[0017] Since metal A has good thermal conductivity, the heat exchange component is in contact with the cooled medium in the heat exchange tube, so that the heat contained in it is better conducted to the tube wall of the heat exchange tube through the heat exchange component and further absorbed by the cooling medium, which substantially increases the heat exchange area of the heat exchanger.

[0018] The core of the spiral heat exchanger is made of high-strength metal B, which increases the strength of the heat exchanger and facilitates installation. During maintenance and use, the heat exchanger can be disassembled for cleaning or replacement, and the cleaning or replacement will be the same as a new device. Description of the drawings:

[0020] Figure 1 This is a schematic diagram of the main structure of the filament spiral heat exchange component of the present invention;

[0021] Figure 2 This is a side structural diagram of the filament spiral heat exchange component of the present invention;

[0022] Figure 3 This is a diagram showing the use of the filament spiral heat exchange component of the present invention, wherein 3 is a tubular heat exchanger and 4 is a heat exchange tube. Specific implementation method:

[0024] The following combination Figure 1-3 The present invention is further described;

[0025] The filigree spiral heat exchange assembly described herein includes a helical spring-shaped edge wire made of metal A and a U-shaped core wire made of metal B. Metal A and metal B can be made of the same or different materials. Metal A is preferably made of a material with good thermal conductivity, such as copper; metal B is preferably made of a material with good strength, such as stainless steel.

[0026] The specific production method includes: firstly winding a metal wire A having a diameter of 0.3-1.5 mm into a spiral spring-shaped side wire having a diameter of 5-25 mm; the U-shaped core wire is made of a metal wire B having a diameter of 0.8-3 mm; the length of the U-shaped core wire is greater than the length of the spiral spring-shaped side wire wound from the metal wire A; one side wire of the U-shaped core wire is inserted into the interior of the spiral spring-shaped side wire, and the other side wire of the U-shaped core wire is located outside the spiral spring-shaped side wire; providing a hook at the end of the rotating shaft of the rotating device; then, with the U-shaped core wire clamping the spiral spring-shaped side wire wound from the metal wire A, the closed end of the horizontally placed U-shaped core wire is connected to the hook at the end of the rotating shaft of the rotating device; and the free end of the U-shaped core wire is fixed to a fixture, with the axial centerline of the U-shaped core wire coinciding with the extended axial centerline of the rotating shaft of the rotating device; and the bottom of the fixture is provided with a running wheel or a slider, which is placed on a track or a slideway; the end of the fixture facing away from the U-shaped core wire fixes the spring, and the other end of the spring is fixed to the end of the track. The rotating device rotates the U-shaped core wire, causing it to intertwine with the helical spring-shaped side wires. After winding, the U-shaped core wire forms a double helix structure. One side wire, located inside the helical spring-shaped side wire, is the inner helix, while the other side wire, located outside the helical spring-shaped side wire, is the outer helix. The helical spring-shaped side wire, held in place by the inner and outer helices, undergoes "re-helicaling" and is evenly distributed around the U-shaped core wire in a "petal-like" pattern. This is why the side wires are called flower wires. The flower wire helix coincides with the "helical axis" of the double helix core structure, consisting of the inner and outer helices, and has a consistent pitch. They entangle to form a multi-helix structure. The double helix core structure secures the flower wire axially and provides traction during installation.

[0027] The filament spiral heat exchange component manufactured according to the above-mentioned dimensions can be used in heat exchange tubes with a diameter of 10-50 mm.

[0028] When in use, the diameter of the filament spiral heat exchange component needs to be slightly larger than the diameter of the heat exchange tube, and then it is cut into the required length and installed in the heat exchange tube. Since the envelope circle diameter of the wound heat exchange component is slightly larger than the inner diameter of the heat exchange tube, when it is installed, mutual squeezing is generated between the filament and the tube wall. Under the action of this squeezing force, the heat exchange component is firmly constrained in the heat exchange tube.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for manufacturing a filament spiral heat exchange component for a tubular heat exchanger, characterized by: The filigree spiral heat exchange component includes a spiral spring-shaped side wire made of metal A wire and a U-shaped core wire made of metal B wire. The metal A wire is first wound into a spiral spring-shaped side wire, and the length of the U-shaped core wire is greater than the length of the spiral spring-shaped side wire wound by the metal A wire. One side wire of the U-shaped core wire is inserted into the interior of the spiral spring-shaped side wire, and the other side wire of the U-shaped core wire is located on the outside of the spiral spring-shaped side wire; a hook is provided at the end of the rotating shaft of the rotating device, and then, when the U-shaped core wire is clamped with the spiral spring-shaped side wire wound by the metal A wire, the closed end of the horizontally placed U-shaped core wire is connected to the hook at the end of the rotating shaft of the rotating device, and the free end of the U-shaped core wire is fixed on the fixture, and the axial center line of the U-shaped core wire coincides with the extended line of the axial center line of the rotating shaft of the rotating device. A walking wheel or a slider is provided at the bottom of the fixture, and the walking wheel or slider is placed on a track or slideway, and the fixture faces away from the U-shaped core wire. The U-shaped core wire is rotated so that the U-shaped core wire and the spiral spring-shaped side wire are intertwined. After the winding is completed, the U-shaped core wire forms a double spiral core wire structure. The side wire located inside the spiral spring-shaped side wire in the U-shaped core wire is the inner wire spiral, and the other side wire located outside the spiral spring-shaped side wire is the outer wire spiral. The spiral spring-shaped side wire is "re-spiraled" under the clamping of the inner wire spiral and the outer wire spiral, and is evenly distributed in a "petal-like" manner around the U-shaped core wire of the double spiral structure. Therefore, the side wire is called a flower wire. The flower wire spiral coincides with the "spiral axis" of the double spiral core wire structure composed of the inner wire spiral and the outer wire spiral, and the pitch is consistent. They are entangled with each other to form a multiple spiral combination structure. The double spiral core wire structure plays a role in axial fixation of the flower wire and traction during the installation process. Then cut it into the required length and install it into the heat exchange tube. When installing, the filaments and the tube wall are squeezed against each other. Under the action of this squeezing force, the heat exchange component is firmly constrained in the heat exchange tube. The material of metal A wire is copper; the material of metal B wire is stainless steel; The diameter of the metal A wire is 0.3-1.5 mm, the diameter of the spiral spring-shaped edge wire wound by the metal A wire is 5-25 mm, and the diameter of the metal B wire is 0.8-3 mm.

Images