Corrosion-resistant fluid distributor device for off-peak electricity thermal storage heating system
By employing a corrosion-resistant fluid distributor with a nanomaterial layer, a corrosion-absorbing metal layer, and a real-time monitoring module in the off-peak electricity thermal storage heating system, the corrosion problem of the heating medium was solved, the system's corrosion resistance and heat transfer efficiency were improved, the equipment life was extended, and the stable operation of the system was ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA UNIV OF SCI & TECH
- Filing Date
- 2025-06-19
- Publication Date
- 2026-05-26
AI Technical Summary
In existing off-peak electricity thermal storage heating systems, the heating medium is prone to causing corrosion of the metal pipe walls, and traditional anti-corrosion coatings are prone to peeling off at high temperatures, affecting system reliability and heat transfer efficiency.
A corrosion-resistant fluid distributor device was designed, which uses a nanomaterial layer and a corrosion-absorbing elastic metal layer for multi-layer protection, combined with an S-shaped retention tube and a reinforcing rib structure, and is equipped with a corrosion sensor and a temperature transmitter for real-time monitoring.
It effectively prevents corrosion of metal pipe walls, improves the system's corrosion resistance and heat transfer uniformity, extends equipment life, and improves system stability and energy conversion efficiency by preventing potential failures through real-time monitoring.
Smart Images
Figure CN224284774U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of anti-corrosion fluid distributors, specifically to an anti-corrosion fluid distributor device for off-peak electricity storage heating systems. Background Technology
[0002] Off-peak electricity storage is a technology that converts electrical energy into sensible heat in a heat storage medium for later use, providing heat when needed. Through off-peak electricity storage, surplus electricity generated at night can be converted into sensible heat such as hot water, high-temperature flue gas, and steam for storage and then supplied as needed. It boasts advantages such as rapid response, flexible scheduling, low operating costs, and high return on investment. It can effectively improve heating capacity, enhance heating quality, and increase the economic benefits of the electric heating industry without increasing installed capacity. To meet my country's renewable energy consumption capacity and promote the development of clean energy, off-peak electricity storage heating is becoming a future trend in heating methods. This type of heating utilizes surplus electricity during off-peak electricity generation periods to store heat in an energy storage manner.
[0003] Fluid distributors are crucial devices for ensuring efficient energy storage and conversion. Their main function is to distribute the heat transfer medium rationally to each branch pipe, ensuring uniform and efficient heat transfer.
[0004] However, the chloride ions and sulfides contained in the heating medium (such as high-temperature water, molten salt or heat transfer oil) in the existing technology can easily lead to pitting corrosion or stress corrosion cracking of the metal pipe wall, and traditional anti-corrosion coatings (such as epoxy resin) are easy to peel off under high temperature erosion. Utility Model Content
[0005] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a corrosion-resistant fluid distributor device for a valley-electricity thermal storage heating system. This device has an optimized structure, integrates efficient corrosion prevention and monitoring, and improves the reliability of the valley-electricity thermal storage system.
[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a corrosion-resistant fluid distributor device for a valley-electricity thermal storage heating system, comprising: a distributor body, the distributor body including a flow-blocking pipe, an outlet pipe, and a retention pipe disposed between the flow-blocking pipe and the outlet pipe, the retention pipe connecting the inner cavities of the flow-blocking pipe and the outlet pipe, one end of the flow-blocking pipe being connected to the outlet of a fluid conveying pipe, the other end being connected to one end of the retention pipe, the other end of the retention pipe being connected to the fluid inlet of the outlet pipe, and the other end of the outlet pipe being connected to a fluid output channel. The outlet pipe has a chamfer at its outlet; reinforcing ribs are provided on the inner walls of the flow-blocking pipe and the retention pipe and are arranged along the fluid flow direction, dividing the inner cavities of the flow-blocking pipe and the retention pipe into at least two parts; an anti-corrosion mechanism includes a nanomaterial layer for corrosion prevention attached to the inner wall of the distributor body and a corrosion-absorbing elastic metal layer embedded inside the retention pipe; and a monitoring module including a corrosion sensor and a temperature transmitter located at the bend of the retention pipe for real-time monitoring of corrosion status and fluid temperature.
[0007] Preferably, the flow-blocking pipe, the stagnant pipe, and the outflow pipe are integrally formed.
[0008] Preferably, the reinforcing rib is integrally formed with the flow-blocking tube and the retention tube.
[0009] Preferably, the retention tube is S-shaped with a bending angle of 90°, and the bending direction is clockwise or counterclockwise from the fluid entry direction.
[0010] Preferably, a heat-conducting component is provided on the outer wall of the retention tube along its axial direction, and the heat-conducting component is a copper fin or a spiral heat exchange tube.
[0011] Preferably, the inner diameters of the flow-blocking tube and the stagnant tube are smaller than the inner diameter of the outflow tube.
[0012] Preferably, the connections between the retention pipe, the flow-blocking pipe, and the outflow pipe are all rounded.
[0013] Preferably, the nanomaterial layer has a multilayer structure, including an epoxy primer layer, a nano-ceramic intermediate layer, and a polyurethane top layer.
[0014] With the above structure, this utility model has the following advantages:
[0015] The nanomaterial layer of this application adopts a multi-layer structure of "epoxy primer layer + nano-ceramic intermediate layer + polyurethane top layer" to achieve multi-layer composite protection and solve the problem of easy peeling of traditional epoxy resin coating at high temperature. The corrosive elastic metal layer (such as zinc, aluminum and other active metals) embedded in the stagnation tube can preferentially react with corrosive ions in the fluid through the principle of electrochemical corrosion, consume itself to protect the metal body of the distributor. At the same time, the elastic material can adapt to fluid impact and temperature deformation to avoid cracking of the protective layer.
[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Figure 2 This is the front view of this utility model.
[0020] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of AA.
[0021] Figure 4 This is a schematic diagram of the flow-blocking tube.
[0022] Figure 5 This is a schematic diagram of the layered structure of nanomaterials.
[0023] As shown in the figure: 1. Flow choke; 2. Retention tube; 3. Heat-conducting component; 4. Outflow tube; 5. Corrosion sensor; 6. Reinforcing rib; 7. Polyurethane surface layer; 8. Nano-ceramic intermediate layer; 9. Epoxy primer layer; 10. Chamfer; 11. Nanomaterial layer; 12. Corrosion-absorbing elastic metal layer; 13. Temperature transmitter. Detailed Implementation
[0024] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0026] Combined with appendix Figures 1-5 The corrosion-resistant fluid distributor device for off-peak electricity thermal storage heating system includes the distributor body, reinforcing ribs 6, corrosion-resistant mechanism and monitoring module.
[0027] The distributor body includes a flow-blocking pipe 1, an outlet pipe 4, and a retention pipe 2 disposed between the flow-blocking pipe 1 and the outlet pipe 4. The retention pipe 2 connects the inner cavities of the flow-blocking pipe 1 and the outlet pipe 4. One end of the flow-blocking pipe 1 is connected to the outlet of the fluid delivery pipe, and the other end is connected to one end of the retention pipe 2. The other end of the retention pipe 2 is connected to the fluid inlet of the outlet pipe 4, and the other end of the outlet pipe 4 is connected to the fluid output channel. The outlet of the outlet pipe 4 is provided with a chamfer 10. The reinforcing ribs 6 are disposed on the inner walls of the flow-blocking pipe 1 and the retention pipe 2 and are arranged along the fluid flow direction, dividing the inner cavities of the flow-blocking pipe 1 and the retention pipe 2 into at least two parts. The anti-corrosion mechanism includes a nanomaterial layer 11 attached to the inner wall of the distributor body for corrosion prevention and a corrosion-absorbing elastic metal layer 12 embedded inside the retention pipe 2. The monitoring module includes a corrosion sensor 5 and a temperature transmitter 13 disposed at the bend of the retention pipe 2 for real-time monitoring of corrosion status and fluid temperature.
[0028] In one embodiment of this utility model, the flow-blocking pipe 1, the stagnant pipe 2, and the outlet pipe 4 are integrally formed. Specifically, as shown... Figure 1 As shown, by casting or integral molding process, the flow obstruction tube 1, the stagnation tube 2 and the outflow tube 4 are made into a complete component, avoiding the seams produced by traditional welding methods, reducing the risk of leakage caused by defects such as gaps and pores that may exist at the welding interface, eliminating the influence of welding thermal stress on the performance of metal materials, enhancing the overall strength and sealing of the distributor body, and effectively improving the reliability and service life of the device under high temperature and high pressure conditions.
[0029] In one embodiment of this utility model, the reinforcing rib 6 is integrally formed with the flow-blocking tube 1 and the stagnation tube 2. Specifically, as shown... Figure 1 As shown, during the forming process of the flow-blocking tube 1 and the stagnation tube 2, the reinforcing rib 6 is formed synchronously with the tube body through mold design or processing technology. The reinforcing rib 6 is tightly embedded inside the tube body, and there is no connection interface between the reinforcing rib 6 and the tube body. This avoids the problem of the reinforcing rib 6 falling off due to weak connection, which can more effectively enhance the structural strength of the tube body, disperse the pressure and impact force generated during fluid flow, prevent the tube body from being deformed due to force and affecting the fluid distribution effect, and further improve the stability and durability of the device.
[0030] In one embodiment of this utility model, the retention tube 2 is S-shaped with a bending angle of 90°, and the bending direction is clockwise or counterclockwise from the fluid inlet direction. Specifically, as shown... Figure 3 As shown, the stagnation tube 2 starts from the connection end with the flow-blocking tube 1 and bends twice with a smooth curve. Each bend is 90°, forming an S-shaped channel. This extends the flow path of the fluid in the tube and changes its direction, thus prolonging the residence time of the fluid in the stagnation tube 2. This allows the fluid more time to exchange heat with the tube wall. At the same time, the S-shaped bend promotes turbulence in the fluid, enhances the mixing effect of the fluid, and helps to distribute the heat transfer medium more evenly to each outlet of the outlet tube 4, significantly improving the uniformity and efficiency of heat transfer.
[0031] In one embodiment of this utility model, a heat-conducting component 3 is provided on the outer wall of the retention tube 2 along its axial direction. The heat-conducting component 3 is made of copper fins or a spiral heat exchange tube. Specifically, as shown in the figure... Figure 1 As shown, copper fins are uniformly welded or embedded on the outer wall of the stagnation tube 2 at a certain spacing, increasing the contact area between the tube wall and the outside. Alternatively, the spiral heat exchange tube is tightly wound around the outside of the stagnation tube 2 to form a continuous spiral channel, which greatly increases the heat dissipation area of the stagnation tube 2 and accelerates the heat exchange rate between the fluid inside the tube and the outside. In the heat storage stage of the off-peak electricity heat storage heating system, the heat converted from electrical energy can be quickly stored in the heat transfer medium, and the heat can be efficiently released in the heat release stage, effectively improving the energy conversion efficiency of the system.
[0032] In one embodiment of this utility model, the inner diameters of the flow-blocking pipe 1 and the stagnant pipe 2 are smaller than the inner diameter of the outlet pipe 4. Specifically, as shown... Figure 3 As shown, the diameter of the flow-blocking pipe 1 and the retention pipe 2 is designed according to the fluid flow rate and pressure requirements. Their inner diameter is smaller than that of the outlet pipe 4, forming a "reduced diameter-expanded diameter" channel structure. The reduced diameter design of the flow-blocking pipe 1 and the retention pipe 2 can increase the fluid velocity, enhance the turbulence of the fluid, and promote uniform fluid mixing. After entering the outlet pipe 4, the expanded diameter reduces the fluid velocity and makes the pressure distribution more uniform, which helps to deliver the fluid smoothly and evenly to each output channel.
[0033] In one embodiment of this utility model, the connections between the stagnant pipe 2, the flow-blocking pipe 1, and the outlet pipe 4 are all rounded. Specifically, as shown... Figure 3 As shown, the connection adopts a rounded transition, which eliminates sharp right-angle edges, making the fluid channel transition smoothly at the connection point. This reduces the resistance and turbulence of the fluid flowing at the connection point, avoids stress concentration caused by fluid impact, effectively prevents fatigue cracking of metal at the connection point, improves the structural strength of the device and the smoothness of fluid flow, and further extends the service life of the device.
[0034] In one embodiment of this utility model, the nanomaterial layer 11 has a multilayer structure, including an epoxy primer layer 9, a nano-ceramic intermediate layer 8, and a polyurethane top layer 7. Specifically, as shown... Figure 5 As shown, an epoxy primer is first sprayed onto the inner wall of the distributor body to ensure it adheres tightly to the metal surface, forming the first layer of protection. After the primer cures, a nano-ceramic intermediate layer 8 is applied, utilizing the high hardness and high-temperature resistance of the nano-ceramic material to enhance corrosion resistance. Finally, a polyurethane topcoat 7 is sprayed to form a flexible and wear-resistant outer protective film. Through the complementary properties of different materials, a composite anti-corrosion effect is achieved. The epoxy primer ensures strong adhesion to the metal, the nano-ceramic layer resists high-temperature corrosive media, and the polyurethane topcoat 7 prevents the coating from peeling off. This effectively solves the problem of traditional anti-corrosion coatings being easily damaged under high-temperature erosion, significantly improving the corrosion resistance of the distributor body.
[0035] In one embodiment of this utility model, the corrosion sensor 5 adopts the principle of electrochemistry. By measuring the electrochemical reaction current between the metal electrode and the fluid medium, it monitors the corrosion rate of the metal on the inner wall of the stagnation tube 2 in real time and converts the data into an electrical signal output. The temperature transmitter 13 is a high-precision thermocouple or resistance temperature detector sensor, which is closely attached to the outer wall of the bend of the stagnation tube 2. It can quickly and accurately sense the temperature change of the fluid in the tube and convert the temperature signal into a standard industrial signal (such as a 4-20mA current signal). Both the corrosion sensor 5 and the temperature transmitter 13 are connected to the external control system through signal transmission lines to ensure that the data can be transmitted stably and in real time. The two are installed at the bend of the stagnation tube 2 because the fluid flow direction changes abruptly at this part, which is prone to turbulence and eddies, resulting in stronger scouring and corrosion of the tube wall. This is a high-incidence area for corrosion and temperature anomalies. Setting up monitoring equipment here can accurately capture early signals of corrosion and temperature changes. On the one hand, by monitoring the corrosion status in real time, damage to the anti-corrosion layer or potential metal corrosion can be detected in advance, making it easier for maintenance personnel to take timely repair measures and avoid equipment leakage or failure caused by increased corrosion. On the other hand, the fluid temperature data fed back by the temperature transmitter 13 can provide a basis for the operation and control of the off-peak electricity thermal storage heating system, such as adjusting the heating power and optimizing the flow rate of the thermal storage medium according to temperature changes, thereby improving the overall operating efficiency and stability of the system.
[0036] In summary, the corrosion-resistant fluid distributor device for the off-peak electricity thermal storage heating system of this utility model improves upon existing technologies in terms of fluid distribution uniformity, structural strength, corrosion resistance, and system monitoring through optimization of the distributor body structure, reasonable setting of reinforcing ribs 6, efficient anti-corrosion mechanism, and precise monitoring module. It not only effectively solves the problems of heating medium corrosion and uneven fluid distribution in existing technologies, but also improves heat exchange efficiency and system reliability, extends equipment service life, and provides a strong guarantee for the stable operation and efficient energy conversion of the off-peak electricity thermal storage heating system.
[0037] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.
[0038] The present invention and its embodiments have been described above. This description is not restrictive, and the embodiments shown throughout the text are only one of the embodiments of the present invention. The actual structure is not limited to this. In conclusion, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.
Claims
1. A corrosion-resistant fluid distributor device for a valley-electricity thermal storage heating system, characterized in that, include: The distributor body includes a flow-blocking tube, an outlet tube, and a retention tube disposed between the flow-blocking tube and the outlet tube. The retention tube connects the inner cavities of the flow-blocking tube and the outlet tube. One end of the flow-blocking tube is connected to the outlet of the fluid delivery tube, and the other end is connected to one end of the retention tube. The other end of the retention tube is connected to the fluid inlet of the outlet tube, and the other end of the outlet tube is connected to the fluid output channel. The outlet of the outlet tube is chamfered. A reinforcing rib is provided on the inner wall of the flow-blocking tube and the retention tube and is arranged along the fluid flow direction, dividing the inner cavity of the flow-blocking tube and the retention tube into at least two parts; The corrosion protection mechanism includes a nanomaterial layer for corrosion protection attached to the inner wall of the distributor body and a corrosion-absorbing elastic metal layer embedded inside the retention tube. The monitoring module includes a corrosion sensor and a temperature transmitter installed at the bend of the retention pipe, for real-time monitoring of corrosion status and fluid temperature.
2. The corrosion-resistant fluid distributor device for the off-peak electricity thermal storage heating system according to claim 1, characterized in that: The flow-blocking tube, the stagnant tube, and the outflow tube are integrally formed.
3. The corrosion-resistant fluid distributor device for the off-peak electricity thermal storage heating system according to claim 2, characterized in that: The reinforcing rib is integrally formed with the flow-blocking tube and the retention tube.
4. The corrosion-resistant fluid distributor device for the off-peak electricity thermal storage heating system according to claim 3, characterized in that: The retention tube is S-shaped with a bending angle of 90°, and the bending direction is clockwise or counterclockwise from the fluid entry direction.
5. The corrosion-resistant fluid distributor device for the off-peak electricity thermal storage heating system according to claim 4, characterized in that: The outer wall of the retention tube is provided with a heat-conducting component along its axial direction, and the heat-conducting component is made of copper fins or a spiral heat exchange tube.
6. The corrosion-resistant fluid distributor device for the off-peak electricity thermal storage heating system according to claim 5, characterized in that: The inner diameter of the flow-blocking tube and the stagnant tube is smaller than the inner diameter of the outflow tube.
7. The corrosion-resistant fluid distributor device for the off-peak electricity thermal storage heating system according to claim 6, characterized in that: The connections between the retention tube, the flow-blocking tube, and the outflow tube are all rounded.
8. The corrosion-resistant fluid distributor device for the off-peak electricity thermal storage heating system according to claim 7, characterized in that: The nanomaterial layer has a multi-layer structure, including an epoxy primer layer, a nano-ceramic intermediate layer, and a polyurethane top layer.