Heat distribution pipeline lining pipe with heat insulation and heat preservation effects and lining pipe production equipment

Abstract

The invention belongs to the technical field of lining pipe production equipment, and mainly provides a heat distribution pipeline lining pipe with a heat insulation effect and lining pipe production equipment. Comprising an extrusion device, the extrusion device is provided with a sleeve, the sleeve is fixedly connected with first hard pipes which are evenly distributed in the circumferential direction, the first hard pipes are communicated with spraying heads, the first hard pipes which are evenly distributed in the circumferential direction are jointly communicated with a first annular shell, the first annular shell is communicated with a second hard pipe, and the second hard pipe is communicated with a connecting shell. The sleeve communicates with third hard pipes which are evenly distributed in the circumferential direction, the third hard pipes which are evenly distributed in the circumferential direction jointly communicate with a second annular shell, and the sleeve is fixedly connected with a fan. Water is sprayed to the surface of the lining pipe through the spraying heads evenly distributed in the circumferential direction, the water attached to the surface of the lining pipe cannot flow downwards through the draught fan, and therefore the situation that the lining pipe is cooled unevenly due to the fact that water flow moves downwards is avoided, and the mechanical strength of the lining pipe is prevented from being reduced in the production process.

Description

Technical Field

[0001] The present invention complies with the technical field of liner pipe production equipment, and in particular is a thermal pipeline liner pipe with heat insulation effect and liner pipe production equipment. Background Art

[0002] Lined pipe is a special type of pipe, usually made of composite materials, and inserted into the inside of a pipe of another material to provide additional protection or improve certain performance characteristics of the pipe. For example, some materials can make the liner have thermal insulation effect. The production equipment of liner pipe usually includes a series of specially designed mechanical equipment, which work together to ensure product quality and production efficiency. Several main equipment commonly used in the production of plastic lined pipes include: extrusion device, cooling device and traction device, etc. The extrusion device is a machine that heats and plasticizes plastic particles into a molten state and extrude them into tubular products through a mold of a specific shape. In order to ensure the dimensional stability and roundness of the pipe, the extruded pipe needs to enter the cooling system immediately. The traction device is used to continuously pull out the formed pipe and send it to the next process.

[0003] When existing cooling devices cool the inner liner pipe, they mostly adopt the method of pouring cold water on the inner liner pipe from top to bottom. However, when the cold water comes into contact with the inner liner pipe, the upper side of the inner liner pipe directly comes into contact with the cold water. After heat exchange, the water temperature rises and flows down along the inner liner pipe. The heated water exchanges heat with the lower side of the inner liner pipe for cooling. This results in different cooling efficiencies on the upper and lower sides of the inner liner pipe, which will cause the mechanical strength of the inner liner pipe to decrease, and will reduce the overall structural strength and service life of the plastic inner liner pipe. Summary of the invention

[0004] In order to overcome the disadvantage of uneven cooling when producing liner pipes in existing devices, the present invention provides a thermal pipeline liner pipe with heat insulation effect and liner pipe production equipment.

[0005] Technical solution: A liner pipe production equipment, including an extrusion device, a sleeve is provided on one side of the extrusion device, the sleeve is fixedly connected to a first hard tube evenly distributed in the circumference, the first hard tube penetrates the sleeve, the first hard tube is located in the sleeve and is connected to a spray head on one side, the first hard tubes evenly distributed in the circumference are commonly connected to a first annular shell, the first annular shell is connected to a second hard tube, the second hard tube is connected to a connecting shell on a side away from the first annular shell, the connecting shell is connected to a water supply device, the sleeve is connected to a third hard tube evenly distributed in the circumference, the third hard tubes evenly distributed in the circumference are commonly connected to the second annular shell, the sleeve is fixedly connected to a fan, the air inlet of the fan is connected to the second annular shell, and the air outlet of the fan is connected to the outside.

[0006] Further description: the spray head is located on the side of the sleeve away from the extrusion device, the connecting position of the third hard tube and the sleeve is located on the side of the sleeve away from the extrusion device, and the water outlet side of the spray head uniformly distributed circumferentially and the air inlet side of the third hard tube uniformly distributed circumferentially are located on the same vertical plane.

[0007] It is further explained that the side of the sleeve close to the extrusion device is trumpet-shaped, which is used to increase the air intake volume of the side of the sleeve close to the extrusion device.

[0008] It is further explained that the side of the sleeve close to the extrusion device is reduced in diameter to increase the flow rate of the gas when it enters the sleeve.

[0009] It is further explained that the spray heads uniformly distributed in the circumferential direction are all inclined toward the side close to the extrusion device.

[0010] It is further explained that the diameters of the third hard tubes uniformly distributed in the circumferential direction decrease from top to bottom.

[0011] It is further explained that an adjustment plate is slidably connected inside the connection shell, and the adjustment plate is used to change the connection area of ​​the connection shell.

[0012] Further description, a fixed shell is fixedly connected to one side of the connecting shell, the fixed shell is slidably connected to a sliding member that penetrates the connecting shell, the sliding member is fixed to the adjusting plate, the sleeve is provided with a cavity, the cavity is filled with thermal expansion gas, and the cavity is connected to the fixed shell through a hose.

[0013] Further description, a sliding plate is slidably connected in the fixed shell, a spring is arranged between the sliding plate and the sliding member, a threaded rod is threadedly connected to a side of the fixed shell away from the connecting shell, and the threaded rod is rotatably connected to the sliding plate.

[0014] Further description, a thermal pipeline liner pipe with heat insulation effect, according to a liner pipe production equipment, includes a liner pipe, the material of the liner pipe is a composite structure of reinforced fiber and dynamically vulcanized elastomer, and the liner pipe is made of one-time co-extrusion, and the inner and outer coating layers are dynamically vulcanized elastomer.

[0015] The beneficial effects of the present invention are as follows: the present invention sprays water onto the surface of the inner liner pipe through circumferentially evenly distributed spray heads, and prevents the water attached to the surface of the inner liner pipe from flowing down through a fan, thereby avoiding uneven cooling of the inner liner pipe due to the downward movement of the water flow, thereby preventing the mechanical strength of the inner liner pipe from decreasing.

[0016] The present invention reduces the area between the sleeve and the inner liner tube by reducing the diameter of the side of the sleeve close to the extrusion device, thereby increasing the probability of gas molecules in the wind flow contacting the inner liner tube, thereby improving the cooling efficiency of the wind flow on the inner liner tube. At the same time, due to the reduced diameter setting of the sleeve, a stronger negative pressure is generated in the sleeve, which reduces the boiling point of water, increases the evaporation rate of water on the surface of the inner liner tube, and further prevents the water on the surface of the inner liner tube from flowing downward.

[0017] The present invention monitors the temperature in the sleeve through the thermal expansion gas in the cavity, and adjusts the position of the regulating plate according to the temperature in the sleeve, thereby adjusting the water output of the spray head according to the temperature of the inner liner tube, and cooling the inner liner tube with a minimum amount of water, thereby achieving the purpose of saving water. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the sleeve and the first annular shell of the present invention; Figure 3 It is a three-dimensional structural cross-sectional view of the sleeve and the second annular shell of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the first hard tube and the spray head of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the sliding member and the sliding plate of the present invention.

[0019] Figure numerals: 1: extrusion device, 2: sleeve, 201: cavity, 3: first hard tube, 4: spray head, 5: first annular shell, 6: second hard tube, 7: connecting shell, 8: third hard tube, 9: second annular shell, 10: fan, 11: adjustment plate, 12: fixed shell, 13: sliding part, 14: sliding plate, 15: threaded rod. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0021] When the existing device cools the liner pipe, the mechanical strength of the liner pipe decreases due to the different cooling rates on the upper and lower sides of the liner pipe, which reduces the overall structural strength and service life of the plastic liner pipe.

[0022] Example 1: A liner pipe production equipment, such as Figure 1-Figure 5As shown, it includes an extrusion device 1, which is an existing device. Plastic particles are added to melt and extruded to form a tube. A sleeve 2 is arranged on the right side of the extrusion device 1 through a bracket. The space in the sleeve 2 is used to cool the inner liner. Six first hard tubes 3 evenly distributed in the circumferential direction are fixed to the right side of the sleeve 2. The first hard tube 3 penetrates the sleeve 2. One side of the first hard tube 3 located in the sleeve 2 is connected to a spray head 4. The spray head 4 is used to disperse water into small liquids to cool the inner liner, so as to avoid excessive water falling on the inner liner, causing the water to flow downward along the inner liner. The right side of the first hard tube 3 is commonly connected with the first annular shell 5, the upper side of the first annular shell 5 is connected with the second hard tube 6, the upper side of the second hard tube 6 is connected with the connecting shell 7, the connecting shell 7 is connected with the water supply device, the water supply device is an existing device for providing cooling water, the right side of the sleeve 2 is connected with six third hard tubes 8 evenly distributed in the circumferential direction, the right sides of the six third hard tubes 8 and the left sides of the six spray heads 4 are located in the same vertical plane, so that the wind flow can timely carry away the water mist sprayed on the inner liner by the spray head 4 and evaporated, the left sides of the six third hard tubes 8 are commonly connected with the second annular shell 9, the sleeve A fan 10 is fixedly connected to the upper side of the sleeve 2, the air inlet of the fan 10 is connected to the second annular shell 9, and the air outlet of the fan 10 is connected to the outside. The spray head 4 is located on the right side of the sleeve 2, and the connecting position of the third hard tube 8 and the sleeve 2 is located on the right side of the sleeve 2, so that the wind flows from the left side of the sleeve 2 to the right side, and the inner liner is pre-cooled. The left side of the sleeve 2 is trumpet-shaped, which is used to increase the air intake on the left side of the sleeve 2, thereby increasing the cooling rate of the inner liner. The left side of the sleeve 2 is reduced in diameter to increase the flow rate of the gas when it enters the sleeve 2. At the same time, due to the gap between the sleeve 2 and the inner liner, the air inlet of the sleeve 2 is reduced in diameter to increase the flow rate of the gas when it enters the sleeve 2. The gap is reduced, which increases the probability of gas molecules in the wind flow contacting the inner liner, thereby increasing the rate of heat exchange between the wind flow and the inner liner. The water outlets of the six spray heads 4 are all inclined to the left, so that the water mist sprayed by the spray head 4 offsets the force of the wind flow to the right. The diameters of the six third hard tubes 8 decrease from top to bottom, the two third hard tubes 8 on the upper side have the largest diameter, and the two third hard tubes 8 on the lower side have the smallest diameter. When the wind flow reaches the six third hard tubes 8, the upward wind flow prevents the residual water on the surface of the inner liner from flowing downward, so as to achieve the purpose of uniformly cooling the inner liner.

[0023] like Figure 5 As shown, an adjusting plate 11 is slidably connected inside the connecting shell 7, and the adjusting plate 11 is used to change the connecting area of ​​the connecting shell 7, thereby adjusting the amount of water sprayed by the spray head 4, reducing the water consumption while cooling the inner liner pipe.

[0024] like Figure 4 and Figure 5As shown, a fixed shell 12 is fixedly connected to the front side of the connecting shell 7, and a sliding member 13 that penetrates the connecting shell 7 is slidably connected inside the fixed shell 12. The sliding member 13 is composed of a disc and a round rod. The round rod portion of the sliding member 13 is fixedly connected to the adjusting plate 11. The sleeve 2 is provided with a cavity 201. The cavity 201 is filled with thermal expansion gas. The thermal expansion gas has a relatively sensitive thermal characteristic. When the temperature changes, the thermal expansion gas in the sealed container will produce a large pressure change. The cavity 201 is connected to the fixed shell 12 through a hose.

[0025] like Figure 5 As shown, a sliding plate 14 is slidably connected inside the fixed shell 12, and a spring is arranged between the sliding plate 14 and the sliding member 13, and the spring is used to provide resistance for the sliding member 13 to move forward. A threaded rod 15 is threadedly connected to the front side of the fixed shell 12, and the threaded rod 15 is rotatably connected to the sliding plate 14. By rotating the threaded rod 15, the position of the sliding plate 14 is changed, thereby adjusting the initial compression amount of the adjacent springs.

[0026] When using this equipment, the raw material is added to the extrusion device 1 and heated and melted, and then extruded from the right side of the extrusion device 1 to form an inner liner tube. At the same time, the water supply device and the fan 10 are started, so that the water flows through the connecting shell 7 into the second hard tube 6, and then enters the first annular shell 5, and then enters the six first hard tubes 3 from the first annular shell 5, and finally sprays water mist from the six spray heads 4. At the same time, the gas enters from the left and right sides of the sleeve 2, but because the left side of the sleeve 2 is trumpet-shaped, the gas entering from the left side of the sleeve 2 is more than the gas entering from the right side of the sleeve 2. After entering, the gas enters the six third hard tubes 8, and then enters the fan 10 through the second annular shell 9, and is discharged from the air outlet of the fan 10. In this process, the wind flow will bring out the water mist that evaporates after cooling the inner liner tube. After that, the inner liner tube enters from the left side of the sleeve 2 and moves out from the right side of the sleeve 2. When the inner liner tube passes through the sleeve 2, the inner liner tube is pre-cooled by the wind flow entering from the left side of the sleeve 2, and then is discharged from the spray head 4. The water mist sprayed by the mist head 4 cools down the inner liner, thereby preventing water from directly contacting the inner liner and causing a sudden drop in the temperature of the inner liner to cause stress concentration. At the same time, because the diameter of the third hard tube 8 located on the upper side is larger, the blowing of the wind will prevent the water stains remaining on the surface of the inner liner from flowing downward, so that the water on the upper side of the inner liner will not affect the temperature of the lower side of the inner liner, so as to achieve uniform cooling of the inner liner and prevent the mechanical strength of the inner liner from decreasing due to uneven cooling. When the wind enters from the left side of the sleeve 2, in the process of passing through the reduced diameter of the sleeve 2, the wind has a smaller space to pass through, thereby increasing the probability of air molecules in the wind coming into contact with the inner liner, thereby increasing the speed of pre-cooling of the inner liner by the wind. At the same time, after the wind cools the inner liner, the temperature of the wind rises, thereby using hot air to accelerate the evaporation of water remaining on the surface of the inner liner, further preventing the residual water in the inner liner from flowing downward, so as to prevent uneven cooling speed on the upper and lower sides of the inner liner.

[0027] When the ambient temperature changes, the inner liner pipe enters the sleeve 2 after being cooled by the wind. At this time, the temperature in the sleeve 2 changes. Taking the temperature increase as an example, the hot expanding gas in the cavity 201 expands, the air pressure in the cavity 201 increases, and the sliding member 13 is driven forward by the hose to move forward. The sliding member 13 moves forward and compresses the adjacent spring. At the same time, the sliding member 13 drives the adjusting plate 11 to move forward, so that the area connected to the connecting shell 7 is larger, thereby increasing the spray volume of the spray head 4 to achieve the purpose of cooling the inner liner pipe. Before using this device, the threaded rod 15 is rotated according to the water temperature to adjust the position of the sliding plate 14, thereby adjusting the initial compression of the spring adjacent to the sliding plate 14, and then reducing the initial connection area of ​​the connecting shell 7 to reduce the use of water and achieve the purpose of saving resources. After the production of the inner liner pipe is completed, the extrusion device 1, the water supply device and the fan 10 are turned off.

[0028] Example 2: Based on Example 1, a thermal pipeline liner with heat insulation effect, such as Figure 1 As shown, according to the described liner pipe production equipment, it includes an liner pipe with a composite structure of reinforced fiber and dynamically vulcanized elastomer. The liner pipe is made by one-time co-extrusion, and the inner and outer coating layers are dynamically vulcanized elastomers. The continuous length can reach more than 2000 meters, and it has a long-term temperature resistance of more than 120°C, hydrolysis resistance, and low thermal conductivity coefficient. Therefore, the liner pipe has the effect of heat insulation and heat preservation, and has high mechanical properties and good elastic properties.

[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 principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A liner pipe production equipment, comprising an extrusion device (1), a sleeve (2) being provided on one side of the extrusion device (1), the sleeve (2) being fixedly connected with a first hard pipe (3) evenly distributed in the circumferential direction, the first hard pipe (3) penetrating the sleeve (2), and a spray head (4) being connected to one side of the first hard pipe (3) located inside the sleeve (2), wherein: The invention also comprises a first annular shell (5), the first annular shell (5) being fixedly connected to the first hard tube (3) evenly distributed in the circumferential direction, the first annular shell (5) being connected to a second hard tube (6), the second hard tube (6) being connected to a connecting shell (7) on a side away from the first annular shell (5), the connecting shell (7) being connected to a water supply device, the sleeve (2) being connected to a third hard tube (8) evenly distributed in the circumferential direction, the third hard tubes (8) evenly distributed in the circumferential direction being connected together with a second annular shell (9), the sleeve (2) being fixedly connected to a fan (10), the air inlet of the fan (10) being connected to the second annular shell (9), and the air outlet of the fan (10) being connected to the outside.

2. The liner pipe production equipment according to claim 1 is characterized in that: The spray head (4) is located on a side of the sleeve (2) away from the extrusion device (1), the connection position between the third hard tube (8) and the sleeve (2) is located on a side of the sleeve (2) away from the extrusion device (1), and the water outlet side of the spray head (4) evenly distributed in the circumference and the air inlet side of the third hard tube (8) evenly distributed in the circumference are located in the same vertical plane.

3. The liner pipe production equipment according to claim 2 is characterized in that: The side of the sleeve (2) close to the extrusion device (1) is trumpet-shaped, and is used to increase the air intake volume on the side of the sleeve (2) close to the extrusion device (1).

4. The liner pipe production equipment according to claim 3 is characterized by: The side of the sleeve (2) close to the extrusion device (1) is reduced in diameter to increase the flow rate of the gas when it enters the sleeve (2).

5. The liner pipe production equipment according to claim 4 is characterized in that: The spray heads (4) uniformly distributed in the circumferential direction are all inclined toward a side close to the extrusion device (1).

6. The liner pipe production equipment according to claim 5 is characterized in that: The diameters of the third hard tubes (8) uniformly distributed in the circumferential direction decrease from top to bottom.

7. The liner pipe production equipment according to claim 6 is characterized in that: An adjustment plate (11) is slidably connected inside the connection shell (7), and the adjustment plate (11) is used to change the connection area of ​​the connection shell (7).

8. The liner pipe production equipment according to claim 7 is characterized in that: A fixed shell (12) is fixedly connected to one side of the connecting shell (7); the fixed shell (12) is slidably connected to a sliding member (13) that penetrates the connecting shell (7); the sliding member (13) is fixedly connected to the adjustment plate (11); the sleeve (2) is provided with a cavity (201); thermal expansion gas is filled in the cavity (201); the cavity (201) and the fixed shell (12) are connected via a hose.

9. The liner pipe production equipment according to claim 8 is characterized in that: A sliding plate (14) is slidably connected inside the fixed shell (12), a spring is provided between the sliding plate (14) and the sliding member (13), a threaded rod (15) is threadedly connected to a side of the fixed shell (12) away from the connecting shell (7), and the threaded rod (15) is rotatably connected to the sliding plate (14).

10. A thermal pipeline liner with heat insulation effect, the liner production equipment according to claim 9, characterized in that: The utility model comprises an inner liner tube, the material of which is a composite structure of reinforced fiber and dynamically vulcanized elastomer, and the inner liner tube is formed by one-time co-extrusion, and the inner and outer coating layers are dynamically vulcanized elastomer.

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