Device for preventing pipe icing and sludge discharging system for outdoor of waterworks

Abstract

The utility model relates to a prevent freezing device and sludge discharge system of pipeline for outdoor of waterworks, and the device includes the conveying pipeline, and the conveying pipeline includes inner tube, first heat preservation layer, second heat preservation layer, and the inner tube has the inner passage for conveying material, and the first heat preservation layer is covered in the outer of inner tube, and the second heat preservation layer is covered in the outer of first heat preservation layer, or the second heat preservation layer is covered in the outer of inner tube, and the first heat preservation layer is covered in the outer of second heat preservation layer, and the heat preservation medium in first heat preservation layer, second heat preservation layer adopts liquid state or solid state, and the end of first heat preservation layer, second heat preservation layer is sealedly connected with inner tube. The prevent freezing device for outdoor of waterworks provided by the utility model, through setting first heat preservation layer and second heat preservation layer one to form first heat preservation wall to inner tube, and then through another to form second heat preservation wall to inner tube, so that inner tube material is heated more fully and evenly, has stronger and more stable anti -icing effect.

Description

Technical Field

[0001] This utility model relates to a device for preventing pipe icing and a sludge discharge system for outdoor use in waterworks. Background Technology

[0002] Waterworks generate sludge during water treatment. After dewatering, the sludge is transported to a storage silo via a sludge conveying pipeline for temporary storage. Once a sufficient amount of sludge has been stored in the silo, the sludge discharge valve at the bottom of the silo is opened, and the sludge is loaded onto trucks for transport.

[0003] However, existing sludge transport pipelines are exposed to the ground and are easily affected by the natural environment. Moreover, sludge transport pipelines are not used all the time, but only when sludge needs to be transported. Especially in severe cold weather, the sludge in the sludge transport pipelines freezes, making it impossible to transport sludge, which in turn affects the normal discharge of sludge. Utility Model Content

[0004] The purpose of this invention is to provide an anti-icing device for outdoor waterworks pipes and a sludge discharge system, which can effectively reduce the possibility of materials freezing inside the conveying pipes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anti-icing device for outdoor waterworks pipes includes a conveying pipeline comprising an inner pipe, a first insulation layer, and a second insulation layer. The inner pipe has an inner channel for conveying materials. The first insulation layer is fitted over the inner pipe, and the second insulation layer is fitted over the first insulation layer, or the second insulation layer is fitted over the inner pipe, and the first insulation layer is fitted over the second insulation layer. The insulation medium used in the first and second insulation layers is liquid or solid. The ends of the first and second insulation layers are sealed to the inner pipe.

[0007] According to some embodiments of this utility model, the first insulation layer and the second insulation layer are composed of a sleeve, which is sleeved outside the inner tube. The inner peripheral wall of the sleeve is in contact with the outer peripheral wall of the inner tube. The sleeve is divided into a first receiving channel and a second receiving channel arranged coaxially. The first receiving channel and the second receiving channel are both arranged along the axial direction of the insulation tube. The first receiving channel is closer to the inner tube than the second receiving channel. The first receiving channel forms the first insulation layer, and the second receiving channel forms the second insulation layer. The first insulation layer or the second insulation layer contains a liquid insulation medium. The opposite ends of the sleeve are sealed to the inner tube.

[0008] According to some embodiments of this utility model, the first insulation layer contains a liquid insulation medium, and the first insulation layer is used to communicate with the insulation medium supply unit; the second insulation layer contains an insulation medium, which is glass fiber, asbestos or rock wool.

[0009] According to some embodiments of this utility model, a first mounting ring and a second mounting ring are provided at opposite ends of the sleeve. The first mounting ring is connected to the second mounting ring. The first mounting ring is sleeved on the outside of the sleeve and is provided at the end of the sleeve. The second mounting ring is sleeved on the outside of the inner tube.

[0010] According to some embodiments of this utility model, the first insulation layer and the second insulation layer are relatively independent. The first insulation layer contains a phase change material. The second insulation layer has a receiving channel arranged along its axial direction. The receiving channel contains a liquid insulation medium and is used to communicate with an insulation medium supply unit.

[0011] According to some embodiments of this utility model, the device further includes a third insulation layer, which is disposed between the first insulation layer and the second insulation layer, and the third insulation layer is made of glass fiber, asbestos or rock wool.

[0012] According to some embodiments of this utility model, the heat-insulating medium is a phase change material or water.

[0013] According to some embodiments of this utility model, an outer heat-insulating layer is provided on the outermost periphery of the conveying pipeline. The outer heat-insulating layer is a waterproof felt, or the outer heat-insulating layer includes a heat-insulating cotton layer and a waterproof felt arranged sequentially from the inner pipe outwards.

[0014] According to some embodiments of the present invention, the device includes a temperature sensor for detecting the temperature inside the inner channel of the inner tube.

[0015] According to some embodiments of this utility model, the device further includes an inlet pipe, an outlet pipe, a thermal insulation medium supply unit, a pump, and a support assembly. One end of the inlet pipe and one end of the outlet pipe are connected to one of the first thermal insulation layer and the second thermal insulation layer, and one end of the inlet pipe and one end of the outlet pipe are connected to the thermal insulation medium supply unit.

[0016] Both the inlet and outlet pipelines are equipped with infusion pumps; the support assembly is used to support the delivery pipelines and infusion pumps, and the support assembly includes a first support rod and a second support rod, the first support rod being connected to the delivery pipeline and the second support rod being connected to the infusion pump.

[0017] According to some embodiments of the present invention, the heat preservation medium supply unit includes a liquid storage container, and the device further includes a heating furnace, which is disposed below the liquid storage container for heating the liquid storage container.

[0018] Another technical solution adopted by this utility model is:

[0019] A sludge discharge system for preventing icing in a waterworks includes an outdoor anti-icing device for pipes, a centrifuge, a screw conveyor, a hopper, and a silo. The centrifuge is connected to the screw conveyor. The hopper is located below the outlet of the screw conveyor to receive sludge. The outlet of the hopper is connected to one end of the inner pipe of the conveying pipeline, and the silo is connected to the other end of the inner pipe of the conveying pipeline.

[0020] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0021] The present invention provides an anti-icing device for outdoor waterworks pipes. By setting a first insulation layer and a second insulation layer to form a first insulation wall for the inner pipe, and then forming a second insulation wall for the inner pipe through another layer, the material in the inner pipe is heated more fully and evenly, resulting in a stronger and more stable anti-icing effect. Attached Figure Description

[0022] Appendix Figure 1 This is an overall structural diagram of the anti-icing pipe device used in outdoor waterworks for embodiments 1-4;

[0023] Appendix Figure 2 This is a top view of the anti-icing pipe device for outdoor waterworks in Examples 1-4;

[0024] Appendix Figure 3 For the appendix Figure 2 A cross-sectional view along the AA direction;

[0025] Appendix Figure 4 For the appendix Figure 3 Enlarged view of a portion of the image;

[0026] Appendix Figure 5 This is a structural diagram of an anti-icing device for outdoor pipes in a waterworks, as shown in Example 2.

[0027] Appendix Figure 6 This is a structural diagram of an anti-icing device for outdoor pipes in a waterworks, as described in Example 4.

[0028] Appendix Figure 7 For the appendix Figure 5 Enlarged view of a portion of the image;

[0029] Appendix Figure 8The structural diagram of the sludge discharge system for preventing ice formation in waterworks provided by this utility model.

[0030] In the attached diagrams above:

[0031] 1-Centrifuge; 2-Screw conveyor; 3-Hopper; 4-Sludge pump; 5-Casing; 51-First receiving channel; 52-Second receiving channel; 6-Hopper; 7-First mounting ring; 8-Second mounting ring; 9-Inner pipe; 10-Third insulation layer; 11-First insulation layer; 12-Second insulation layer; 13-Temperature sensor; 14-Outer insulation layer; 15-Inlet pipe; 16-Outlet pipe; 17-First support rod; 18-Second support rod; 19-Third support rod; 20-Heating furnace; 21-Pressure relief valve; 22-Storage container; 221-Container body; 222-Sealing cap; 2221-Water injection hole; 23-Support frame; 24-Fixed base plate; 25-Sealing plug; 26-Infusion pump; 27-Flange. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Example 1

[0035] See Figure 3 and 4The device shown is an outdoor anti-icing device for waterworks pipes. The device includes a conveying pipeline, which includes an inner pipe 9, a first insulation layer, and a second insulation layer. The inner pipe 9 has an inner channel for conveying materials. The first insulation layer and the second insulation layer are integrated and are formed by a sleeve 5. The sleeve 5 is fitted outside the inner pipe 9, and the inner circumferential wall of the sleeve is in contact with the outer circumferential wall of the inner pipe 9. The sleeve has a first receiving channel 51 and a second receiving channel 52 arranged coaxially. The first receiving channel 51 and the second receiving channel 52 are both arranged along the axial direction of the sleeve. The first receiving channel 51 is closer to the inner pipe 9 than the second receiving channel 52. The first receiving channel 51 forms the first insulation layer, and the second receiving channel 52 forms the second insulation layer. The first receiving channel 51 contains water and is used to connect with a water source. The second receiving channel 52 contains glass fiber, asbestos, or rock wool.

[0036] The two ends of the sleeve 5 are sealed to the inner tube 9. Each end of the sleeve is provided with a first mounting ring 7 and a second mounting ring 8. The second mounting ring 8 abuts against the first mounting ring 7. The first mounting ring 7 and the second mounting ring 8 are connected by bolts and nuts. The first mounting ring 7 is sleeved on the outside of the sleeve 5 and is located at the end of the sleeve 5. The second mounting ring 8 is sleeved on the outside of the inner tube 9. The first mounting ring 7 and the second mounting ring 8 are provided to achieve a sealed connection between the two ends of the sleeve 5 and the inner tube 9.

[0037] In this example, the two ends of the inner tube 9 extend out of the two ends of the first insulation layer and the second insulation layer, respectively, and the length of the inner tube 9 is greater than the length of the first insulation layer and the second insulation layer.

[0038] Example 2

[0039] The difference between this example and Example 1 is that the first insulation layer 11 and the second insulation layer 12 are relatively independent. The first insulation layer 11 is fitted over the inner tube 9, and the second insulation layer 12 is positioned over the first insulation layer 11. The first insulation layer 11 contains a high specific heat value material or a phase change material, or there is a channel between the first insulation layer 11 and the inner tube 9 for containing the insulation medium. The inner wall of the second insulation layer 12 is in contact with the outer periphery of the first insulation layer 11. The second insulation layer 12 has a receiving channel arranged along its axial direction, which contains water and is used to connect to a water source. Flanges 27 are installed at both ends of the conveying pipeline.

[0040] In this example, the high specific heat value material and phase change material have large energy storage and release densities. Under the same temperature reduction, they need to release more heat compared with other materials, thus achieving good thermal insulation effects. When filling the second insulation layer 12 with phase change material, the phase change material is first heated and melted into a liquid. After the liquid phase change material is injected into the second insulation layer 12, it is sealed and then placed in a low-temperature environment for cooling.

[0041] In this example, both the first insulation layer 11 and the second insulation layer 12 are capable of radial expansion and contraction.

[0042] In this example, the insulation material stored in the first insulation layer 11 is used to form the first insulation wall for the inner pipe 9. Then, the water source of the waterworks is cut off and connected to the second insulation layer 12 to form the second insulation wall for the inner pipe 9, which can effectively reduce the possibility of sludge freezing when the inner pipe is transported.

[0043] Example 3

[0044] The difference between this example and Example 2 is that the device also includes a third insulation layer 10, which is disposed between the first insulation layer 11 and the second insulation layer 12. The third insulation layer 10 is composed of an insulation medium, such as glass fiber, asbestos, or rock wool.

[0045] The third insulation layer 10 surrounds the first insulation layer 11, encasing the first insulation layer 11 and making it difficult for the heat of the first insulation layer (including the inner tube) to dissipate outward, thus reducing the heat transfer efficiency and achieving the insulation effect, further reducing the possibility of water or sludge freezing inside the inner tube 9.

[0046] Example 4

[0047] In this example, see Figure 6 and 7 The conveying pipeline can be formed by any of the structures in Examples 1, 2, and 3, with the difference being that: an outer heat-insulating layer 14 is provided on the outermost periphery of the conveying pipeline, and the outer heat-insulating layer 14 is a waterproof felt; or the outer heat-insulating layer 14 includes a heat-insulating cotton layer and a waterproof felt disposed outside the heat-insulating cotton layer.

[0048] The outer insulation layer 14 is laid in conjunction with the second insulation layer 12. When the first insulation layer 11 or the second insulation layer 12 expands, the outer insulation layer can be moderately compressed. The waterproof felt of the outer layer wraps around the insulation cotton, making it difficult for rainwater to wet the inner insulation cotton, thus keeping it dry. Therefore, the outer insulation layer further improves the insulation effect on the inner pipe, preventing water or sludge inside the inner pipe from freezing.

[0049] In Examples 1-4, the inner pipe 9 is used to transport water or sludge. When the insulation medium used in the first insulation layer 11 and the second insulation layer 12 is liquid, it can be water, such as tap water, hot water heated by other heat sources, or groundwater. Since the temperature of tap water is always higher than the freezing point (about 3-8 degrees Celsius in winter), and the tap water is in a state of high-speed continuous flow in the insulation layer, it will not freeze easily. Even if the tap water in the insulation layer freezes, an ice shell with insulation effect will be formed on the outside of the inner pipe, further saving energy.

[0050] Example 5

[0051] A sludge discharge system for preventing icing in a waterworks includes an anti-icing device for outdoor pipes in the waterworks, a centrifuge 1, a screw conveyor 2, a hopper 3, and a silo 6, wherein:

[0052] Centrifuge 1 is used to centrifuge the sludge produced from the sedimentation tank of the waterworks, separating the sludge from the water. One end of screw conveyor 2 is connected to the solid discharge port of centrifuge 1. The sludge produced by centrifuge 1 is fed into screw conveyor 2. A hopper 3 is installed at the lower end of the discharge port of screw conveyor 2. The outlet of hopper 3 is connected to one end of the inner pipe 9 of the conveying pipeline through a pipeline. A sludge pump 4 is installed on this pipeline, located at the bottom of hopper 3. The inlet of silo 6 is connected to the other end of the inner pipe of the conveying pipeline through an inclined pipeline. Multiple conveying pipelines can be installed, and flanges are installed at both ends of the conveying pipelines for connecting multiple conveying pipelines or connecting to the pipe ports of other equipment. After the sludge in silo 6 has accumulated to a certain height, the sludge discharge valve at the bottom of silo 6 is opened to load the sludge onto trucks for transportation.

[0053] The device also includes an inlet pipe 15, an outlet pipe 16, a storage container 22, a delivery pump 26, and a support assembly. One end of the inlet pipe 15 and one end of the outlet pipe 16 are connected to one of the first insulation layer and the second insulation layer, and the other end of the inlet pipe 15 and the other end of the outlet pipe 16 are connected to the storage container 22 to realize the circulation of the liquid insulation medium. A delivery pump 26 is installed on both the inlet pipe 15 and the outlet pipe 16.

[0054] The support assembly is used to support the delivery pipeline and the infusion pump 26. The support assembly includes a first support rod 17, a second support rod 18, and a third support rod 19. The first support rod 17 is connected to the delivery pipeline. Preferably, there are two first support rods 17, which are distributed along the axial direction of the delivery pipeline. The second support rod 18 is connected to the infusion pump 26, and the two infusion pumps 26 are connected to each other through the third support rod 19.

[0055] Reference Figure 1 The lower end of one infusion pump 26 is fixedly connected to the upper surface of the fixed base plate 24 via the second support rod 18, the lower end of another infusion pump 26 is fixedly connected to the upper surface of the fixed base plate 24 via the second support rod 18, and one infusion pump 26 is fixedly connected to the other infusion pump 26 via the third support rod 19.

[0056] The device also includes a heating furnace 20 and a support frame 23. The support frame 23 is fixedly connected to a fixed base plate 24, and the heating furnace 20 is fixedly connected to the support frame 23. A liquid storage container 22 is fixedly connected to the upper surface of the heating furnace 20. The heating furnace 20 is used to heat the water in the liquid storage container 22. The heating furnace 20 is preferably a vortex heating furnace. This allows for the continuous heating and reuse of the liquid insulation medium, preventing freezing, and also avoids waste by recycling the liquid insulation medium.

[0057] The liquid storage container 22 includes a container body 221 and a sealing cap 222. The sealing cap 222 is located at the upper end of the container body 221. The sealing cap 222 is equipped with a pressure relief valve 21. When the pressure inside the liquid storage container 22 is too high, the pressure relief valve 21 on the sealing cap 222 will release pressure to reduce the pressure inside the liquid storage container 22. The sealing cap 222 is equipped with a water injection hole 2221, and a sealing plug 25 is threadedly connected to the water injection hole 2221.

[0058] In this example, when the sludge discharge system for preventing ice formation in the waterworks is operating, the eddy current heater is activated. The eddy current heater heats the storage container, causing the water inside to rapidly heat up to hot water. When the pressure inside the storage container becomes too high, the pressure relief valve on the sealing cap will release pressure to reduce the pressure inside the storage container. Water can be added to the storage container through the water inlet on the sealing cap. When the water in the storage container evaporates during the circulating water supply process, water can be added to the storage container through an external automatic water replenishment device. A solenoid valve can be installed inside the storage container, and a liquid level sensor is installed on the upper and lower sides of the inner wall of the storage container. When the liquid level in the storage container is higher than the upper liquid level sensor, the water inlet solenoid valve will close, stopping the water from entering the storage container. When the liquid level in the storage container is lower than the lower liquid level sensor, the water inlet solenoid valve will open, allowing water to enter the storage container. In addition, a drain outlet is also provided on the storage container for easy drainage.

[0059] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A device for preventing pipe icing in outdoor waterworks, characterized in that, The system includes a conveying pipeline, which comprises an inner pipe, a first insulation layer, and a second insulation layer. The inner pipe has an internal channel for conveying materials. The first insulation layer is fitted over the inner pipe, and the second insulation layer is fitted over the first insulation layer, or the second insulation layer is fitted over the inner pipe, and the first insulation layer is fitted over the second insulation layer. The insulation medium used in the first and second insulation layers is liquid or solid. The ends of the first and second insulation layers are sealed to the inner pipe. The outermost periphery of the conveying pipeline is provided with an insulation outer layer, which is a waterproof felt, or the insulation outer layer includes an insulation cotton layer and a waterproof felt arranged sequentially from the inner pipe outward.

2. The anti-icing device for outdoor pipes in waterworks according to claim 1, characterized in that, The first and second insulation layers are composed of a sleeve, which is fitted over the inner tube. The inner circumferential wall of the sleeve is in contact with the outer circumferential wall of the inner tube. The sleeve is divided into a first accommodating channel and a second accommodating channel arranged coaxially. Both the first and second accommodating channels are arranged along the axial direction of the insulation tube. The first accommodating channel is closer to the inner tube than the second accommodating channel. The first accommodating channel forms the first insulation layer, and the second accommodating channel forms the second insulation layer. The first or second insulation layer contains a liquid insulation medium. Both ends of the sleeve are sealed to the inner tube.

3. The anti-icing device for outdoor pipes in a waterworks according to claim 2, characterized in that, The sleeve is provided with a first mounting ring and a second mounting ring at both opposite ends. The first mounting ring is connected to the second mounting ring. The first mounting ring is sleeved on the outside of the sleeve and is located at the end of the sleeve. The second mounting ring is sleeved on the outside of the inner tube.

4. The anti-icing device for outdoor pipes in a waterworks according to claim 1, characterized in that, The first insulation layer and the second insulation layer are relatively independent. The first insulation layer contains a phase change material. The second insulation layer has a receiving channel arranged along its axial direction. The receiving channel contains a liquid insulation medium and is used to communicate with an insulation medium supply unit.

5. The anti-icing device for outdoor pipes in a waterworks according to claim 4, characterized in that, The device further includes a third insulation layer, which is disposed between the first insulation layer and the second insulation layer, and the third insulation layer is made of glass fiber, asbestos or rock wool.

6. The anti-icing device for outdoor pipes in a waterworks according to claim 1, characterized in that, The heat-insulating medium is a phase change material or water.

7. The anti-icing device for outdoor pipes in a waterworks according to claim 1, characterized in that, The device includes a temperature sensor for detecting the temperature inside the inner channel of the inner tube.

8. The anti-icing device for outdoor pipes in a waterworks according to claim 1, characterized in that, The device further includes an inlet pipe, an outlet pipe, a thermal insulation medium supply unit, an infusion pump, and a support assembly. One end of the inlet pipe and one end of the outlet pipe are connected to one of the first thermal insulation layer and the second thermal insulation layer. One end of the inlet pipe and one end of the outlet pipe are connected to the thermal insulation medium supply unit. An infusion pump is installed on both the inlet pipe and the outlet pipe. The support assembly is used to support the delivery pipeline and the infusion pump. The support assembly includes a first support rod and a second support rod. The first support rod is connected to the delivery pipeline, and the second support rod is connected to the infusion pump.

9. A sludge discharge system, characterized in that, The device includes, as described in any one of claims 1-8, an anti-icing device for outdoor waterworks pipes, a centrifuge, a screw conveyor, a hopper, and a silo, wherein the centrifuge is connected to the screw conveyor, the hopper is located below the outlet of the screw conveyor for receiving sludge, the outlet of the hopper is connected to one end of the inner pipe of the conveying pipeline, and the silo is connected to the other end of the inner pipe of the conveying pipeline.

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