CN219974677U - Pipeline pressure control and power generation system - Google Patents
Pipeline pressure control and power generation system Download PDFInfo
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- CN219974677U CN219974677U CN202321437721.XU CN202321437721U CN219974677U CN 219974677 U CN219974677 U CN 219974677U CN 202321437721 U CN202321437721 U CN 202321437721U CN 219974677 U CN219974677 U CN 219974677U
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Abstract
The utility model relates to a pipeline pressure control and power generation system, which comprises a water supply pipeline, wherein a bypass pipeline is connected to the water supply pipeline, the bypass pipeline is provided with a plurality of bypass branches, each bypass branch is provided with a hydroelectric device, the upstream of the hydroelectric device is provided with an electric regulating valve, and the downstream of the hydroelectric device is provided with a pressure sensor. According to the utility model, the water supply pipeline is connected with the bypass pipeline, and the hydraulic power generation device is arranged on the bypass pipeline to replace the pressure reducing valve, so that not only is the redundant pipe network pressure converted into clean water and electricity, but also the influence of equipment installation on the operation of a pipeline system can be reduced to the greatest extent.
Description
Technical Field
The utility model belongs to the technical field of building water supply and drainage and power generation, and particularly relates to a pipeline pressure control and power generation system.
Background
In the water supply system, the water pressure at the most adverse point is ensured, so that the water supply system pressure is overpressurized for most other areas outside the tail end. In building water supply and drainage systems, the problem of water supply system overpressure is common, and particularly in high-rise and super-high-rise building water supply systems, in order to meet the highest water demand, a pump set is often used for secondary pressurized water supply, so that lower floors have serious overpressure. In order to prevent the components in the water supply system from being damaged and ensure the comfort of water, the working pressure of water in a pipeline must not exceed the pressure range specified by the device, so that the pressure is reduced by an atmospheric and vacuum valve in the water supply system. The water pressurized by the pump set is energy-dissipated by the pressure reducing valve, so that huge energy waste is caused. In addition, a large amount of water can be consumed at the pressure reducing valve, a series of problems such as cavitation abrasion, noise and vibration of the valve body can be necessarily generated due to long-term action, and the service lives of the pipeline and accessories are shortened.
Disclosure of Invention
In view of the above analysis, the present utility model provides a pipeline pressure control and power generation system, which is used for solving the problems of waste of water due to overpressure and reduced service life of pipelines and accessories caused by overpressure in the existing water supply system.
The purpose of the utility model is realized in the following way:
the utility model provides a pipeline pressure control and power generation system, includes the feed water pipeline, be connected with the bypass pipeline on the feed water pipeline, the bypass pipeline has a plurality of bypass branches, every be equipped with a hydroelectric device on the bypass branch, hydroelectric device's upper reaches is equipped with electric control valve, hydroelectric device's low reaches is equipped with pressure sensor.
Further, the bypass pipeline is provided with a shared water inlet pipe and a shared water outlet pipe, a plurality of bypass branches are arranged between the shared water inlet pipe and the shared water outlet pipe in parallel, and an electric regulating valve and a pressure sensor are respectively arranged at the upstream and the downstream of the water turbine generating device on each bypass branch.
Further, the number of the bypass pipelines is multiple, the plurality of bypass pipelines are sequentially connected into the water supply pipeline, and each bypass pipeline can work independently.
Further, the water inlet of the bypass pipeline and the water outlet of the bypass pipeline are both provided with stop valves.
Further, the system also comprises a control system, wherein the control system is configured to control the valve opening degree of the electric regulating valve based on the pressure data information monitored by the pressure sensor, so that the pressure of the downstream water end is kept unchanged.
Further, the hydro-power generation device comprises a water turbine and a generator.
Further, the power generation of the generator is calculated by the following output formula of the water turbine:
in the formula, N is the output force of the water turbine, kW; q is the flow of the water turbine, m/s; h is the water head of the water turbine, m;is the efficiency of the turbine.
Further, the power control panel is connected with the generator in a control mode, and the power control panel is connected with the control system in a signal transmission mode.
Compared with the prior art, the pipeline pressure control and power generation system provided by the utility model has the advantages that the by-pass pipeline is connected to the water supply pipeline, and the water turbine power generation device is arranged on the by-pass pipeline to replace the traditional pressure reducing valve, so that the water supply pressure of a water use end can be controlled, the redundant pipeline network pressure can be converted into clean hydropower energy, and the influence of equipment installation on the operation of a pipeline system can be reduced to the greatest extent.
Drawings
In order to more clearly illustrate the embodiments of the present description or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present description, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of a pipeline pressure control and power generation system according to the present utility model;
fig. 2 is a schematic diagram of a pipeline pressure control and power generation system according to the present utility model.
Reference numerals:
1-a water supply pipeline; 2-a bypass conduit; 3-a hydroelectric generation device; 4-an electric regulating valve; 5-a pressure sensor; 6-a pressure reducing valve; 7-a first shut-off valve; 8-a second shut-off valve; 9-a water turbine; a 10-generator; 11-a common water inlet pipe; 12-a common water outlet pipe; 13-a bypass branch; 14-a power control panel; 15-a control system; 16-electric field scene.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. It should be noted that embodiments and features of embodiments in the present disclosure may be combined, separated, interchanged, and/or rearranged with one another without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the drawings, the size and relative sizes of elements may be exaggerated for clarity and/or descriptive purposes. While the exemplary embodiments may be variously implemented, the specific process sequences may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in reverse order from that described. Moreover, like reference numerals designate like parts.
When an element is referred to as being "on" or "over", "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element, there are no intervening elements present. For this reason, the term "connected" may refer to physical connections, electrical connections, and the like, with or without intermediate components.
Example 1
In one embodiment of the utility model, as shown in fig. 1, a pipeline pressure control and power generation system is disclosed, which comprises a water supply pipeline 1 and a bypass pipeline 2, wherein the water supply pipeline 1 is used as a main water supply pipeline and is connected with a downstream water end; the bypass pipeline 2 is provided with a water inlet and a water outlet, and the water inlet and the water outlet are connected into the water supply pipeline 1; the bypass pipeline 2 is provided with a water turbine generator 3, an electric regulating valve 4 is arranged at the upstream of the water turbine generator 3, and a pressure sensor 5 is arranged at the downstream of the water turbine generator 3. Specifically, the bypass pipeline is provided with a plurality of bypass branches 13, the bypass pipeline 2 is provided with a shared water inlet pipe 11, a shared water outlet pipe 12 and a plurality of bypass branches 13, the water inlet of the shared water inlet pipe 11 is the water inlet of the bypass pipeline 2, and the water outlet of the shared water outlet pipe 12 is the water outlet of the bypass pipeline 2; the bypass branches 13 are arranged in parallel between the water inlet pipe and the water outlet pipe, and each bypass branch 13 is provided with one water turbine generating device 3, one electric regulating valve 4 and one pressure sensor 5.
In one alternative embodiment, the bypass pipeline module is formed by integrally arranging the hydroelectric power generation device 3, the electric control valve 4 and the pressure sensor 5 on the bypass pipeline 2. The modular structure facilitates installation and access to the water supply pipe 1. For extremely high overpressure, the maximum hydraulic power load exceeding the single-group bypass pipeline module cannot reduce the pressure to the use requirement, and the pressure regulation and power generation can be realized by connecting a plurality of modularized bypass pipelines 2 in series. Specifically, the number of the bypass pipes 2 is multiple, and multiple groups of bypass pipes 2 are sequentially connected to the water supply pipe 1. That is, the water inlet and the water outlet of each group of the bypass pipelines 2 are connected to the water supply pipeline 1, each group of the bypass pipelines 2 is correspondingly provided with a group of the first stop valve 7, a group of the second stop valve 8 and an electric control valve, the pressure sensor 5 monitors the water pressure of the downstream water end, each group of the bypass pipelines 2 can work independently, the working state of each bypass pipeline 2 can be controlled by the control system according to the pressure in the water supply pipeline 1 and the water pressure required by the water end, and when all the bypass pipelines 2 are in the working state, namely, the water turbine power generation devices of all the bypass pipelines 2 work, the system adjusts the water pressure capacity and the power generation capacity to be maximum. Further, each set of bypass duct 2 modules may contain a plurality of bypass branches 13.
In this embodiment, the pipeline pressure control and power generation system further includes a control system 15, where the control system 15 is configured to control the valve opening degree of the electric control valve 4 based on the set water demand pressure value, so that the pressure of the downstream water end remains unchanged, that is, the pressure value monitored by the pressure sensor 5 remains unchanged.
In this embodiment, the pipeline pressure control and power generation system can ensure the water pressure at the downstream water end, so that the system accurately monitors and adjusts the pipeline network pressure through the sensor set at the electric control valve 4, and transmits a signal to the control system 15. Specifically, the pressure sensor 5 can transmit the monitored pressure data information to the control system 15, which controls the valve opening degree of the electric control valve 4 based on the received pressure data information so that the pressure value monitored by the pressure sensor 5 is unchanged.
Specifically, an electric control valve 4 is disposed upstream of the hydro-power generation device 3 on the bypass pipe 2, and a pressure sensor 5 disposed in the electric control valve 4 can transmit related information to the control system. Under the condition that the water pressure requirement of the downstream end is known, the pressure value of the downstream water is set to be a fixed value, the control system monitors the pressure value through the pressure sensor 5 and automatically adjusts the opening degree of the valve, so that the pressure of the downstream water end is unchanged, and the water at the tail end is not influenced. With the increase of the water consumption at the tail end, the opening degree of the electric regulating valve 4 is continuously increased, and finally, a stable state is achieved. At this time, the state of the generator 10 also reaches an efficient state, and stable electric power is continuously generated. After water starts, the pressure sensor 5 monitors the water pressure P in the bypass pipeline in real time, and when the monitored pressure value P is reduced to a preset lower limit pressure value, the control system 15 opens the electric regulating valve 4 until the pressure value monitored by the pressure sensor 5 is stabilized at the set working state of 0.2MPa; as the water consumption of the downstream water end continues to increase, the electric control valve 4 is in a fully opened state; as the water consumption of the downstream water side decreases, the water pressure P in the bypass pipe increases, and when the water pressure P exceeds a preset upper limit pressure value, the control system gradually closes the electric control valve 4 until it is completely closed. During the flow of water through the bypass conduit 2, the turbine 9 is driven in rotation, and the coupled generator 10 starts to generate electricity for use. Wherein, the preset lower limit pressure value can be adjusted according to the actual demand, and preferably, the preset lower limit pressure value is 0.2Mpa. That is, when the pressure value of the pressure sensor 5 is stabilized in the set operation state, the pressure value monitored by the pressure sensor 5 is 0.2Mpa. The pressure of water saving is relatively compared with 0.2MPa while ensuring the use requirement and comfort level of users. The preset upper limit pressure value is 0.21Mpa.
By adopting the technical scheme of the embodiment, the water turbine generator 3 is arranged on the bypass pipeline 2, so that redundant pressure is eliminated and utilized. The water supply system can supply the water end through the original water supply pipeline or can supply the water end after passing through the hydroelectric generating device 3. For the existing building, the additional improvement can be carried out under the condition of not influencing water supply, and the overpressure pressure is fully utilized.
In one alternative embodiment, two first stop valves 7 are further arranged on the water supply pipeline 1 between the water inlet and the water outlet of the bypass pipeline 2; said relief valve 6 is located between two of said first shut-off valves 7; the water inlet of the bypass pipeline 2 and the water outlet of the bypass pipeline 2 are both provided with a second stop valve 8. When the system works, the first stop valve 7 of the bypass pipeline 2 is opened, the second stop valve 8 of the water supply pipeline 1 is closed, and water passes through the bypass pipeline 2, so that the power generation device can replace the function of the pressure reducing valve 6 and can generate power.
In this embodiment, the hydraulic generator 3 includes a hydraulic turbine 9 and a generator 10, the pressure sensor 5 can monitor the pressure at the position of the generator 10 in real time, and the electric energy generated by the generator 10 is used for charging a battery, lighting or is integrated into the utility grid. The high-pressure water supply of the water supply pipeline 1 passes through the bypass pipeline 2, firstly passes through the electric control valve 4, then drives the water turbine 9 to rotate, and the water turbine 9 is coupled with the generator 10 to generate electricity.
Further, the generated power of the generator 10 is calculated from the following output equation of the water turbine 9:
in the formula, N is the output (kW) of the water turbine; q is the flow (m/s) of the water turbine; h is the water head (m) of the water turbine;is the efficiency of the turbine.
The flow Q of the water turbine 9 is the water consumption requirement of the pipeline at the rear end of the water turbine 9, and the water head H of the water turbine 9 is the difference between the pressure before the water turbine 9 and the pressure after the water turbine 9, that is, the difference between the pipe network pressure and the water consumption requirement. Therefore, in the case of 2L/s of household water consumption, 30m of overpressure and 90% of efficiency of the water turbine 9 in the high-rise building, the calculated power generation is 0.53kW, and the lighting requirement of the household bulb can be basically maintained.
The type of the water turbine 9 and the generator 10 is as follows: the flow rate is the water flow rate at the maximum of the downstream maximum day. When the turbine 9 and the generator 10 in the first bypass pipe reach the maximum load, i.e. the maximum flow rate here, the second bypass pipe is controlled to open
In one alternative embodiment, the pipeline pressure control and power generation system further comprises a power control panel 14, the power control panel 14 is in control connection with the generator 10 and is configured to control the purpose of generating power for accessing different power utilization scenarios 16, such as battery charging, lighting, incorporation into the power grid, etc.; the power control panel 14 is in signal transmission connection with the control system.
In one alternative embodiment, the embodiment
The working process of the pipeline pressure control and power generation system in the embodiment is as follows:
in an initial state, a first stop valve 7 on the water supply pipeline 1 is closed, a second stop valve 8 from a bypass pipe to the upper part is opened, a first electric regulating valve on a first bypass branch is opened, electric regulating valves on other bypass branches are closed, the first electric regulating valve on the first bypass branch is opened to meet the current downstream water consumption, and meanwhile, a first pressure sensor monitors the water pressure in the first bypass branch in real time, namely monitors the water pressure of a water end;
after water starts, when the first pressure sensor monitors that the pressure value on the first bypass branch is lower than a preset lower limit pressure value, the first pressure sensor transmits a signal lower than the preset lower limit pressure value to the control system; the control system controls the opening degree of the valve port of the first electric regulating valve to be increased, and controls the water pressure of the first bypass branch to reach the pressure required by the water end, so that the water pressure of the water end reaches a stable working state; if the downstream water consumption is reduced, controlling the valve port of the first electric regulating valve to be reduced to an initial state; wherein, the preset lower limit pressure value is 0.2Mpa, and can be set according to the pressure required by the water end.
As the downstream water consumption continues to increase, the control system controls the first electric regulating valve to continuously increase the opening degree of the valve port until the first electric regulating valve is completely opened;
when the first electric regulating valve is completely opened, the water pressure of the first bypass branch cannot be maintained in a stable working state, namely the water pressure cannot be maintained at the moment and is smaller than 0.2Mpa, the second electric regulating valve of the second bypass branch is opened, the water pressure of the second bypass branch is regulated to the stable working state by controlling the opening size of the valve port of the second electric regulating valve, and the water pressure in the common water outlet pipeline connected with the water outlet ends of the plurality of bypass branches is in the stable working state; if the downstream water consumption is reduced, the pressure of the sensor is increased to be more than 0.21MPa, and the valve port of the second electric regulating valve is firstly controlled to be reduced until the second electric regulating valve is completely closed; if the second electric regulating valve is completely closed, the sensor pressure is still larger than 0.21MPa, and the first electric regulating valve is continuously closed.
The downstream water consumption is continuously increased, the process is repeated, the electric regulating valve of the next bypass branch is sequentially opened, and the water pressure at the water consumption end is in a stable working state; then, the water consumption is reduced, and the electric regulating valve is closed in reverse order.
In the process that water flows through the bypass branch, the water turbine 9 is driven to rotate, meanwhile, the electric generator 10 is coupled to generate electric energy, and when the electric regulating valve is fully opened, the electric generator 10 is in a stable working state to continuously generate electric power.
It will be appreciated that the pipeline pressure control and power generation system in this embodiment may also be provided with a pressure reducing valve 6 on the water supply pipeline 1; the water inlet and the water outlet of the bypass conduit 2 are located upstream and downstream of the pressure relief valve 6, respectively. That is, the bypass pipe 2, the hydroelectric device 3 and the electric control valve 4 which are arranged on the bypass pipe 2 are arranged in parallel with the pressure reducing valve 6, the bypass pipe and the pressure reducing valve 6 can respectively and independently operate or simultaneously operate to realize the pressure reducing double insurance of the system through the pipeline communication state of the stop valve control system, and the stop valve is an electric valve which is connected with the control system 15, so that the automatic degree of the system is improved without manual intervention. By adopting the pipeline pressure control and power generation system of the embodiment, for the existing water supply pipeline system, the bypass pipeline can be additionally arranged on the water supply main pipe of the conventional water supply system, the transformation is carried out under the condition that the existing main pipeline is not affected basically, and the system is suitable for the transformation scene.
Compared with the prior art, the pipeline pressure control and power generation system provided by the embodiment at least can realize one of the following beneficial effects:
1. the bypass pipeline is arranged on the water supply pipeline, the water turbine generator and the pressure reducing valve are arranged in the water supply pipeline in parallel, so that the operation of the existing water supply pipeline is not influenced, part of energy of overpressure water in the water supply system can be converted into available electric energy by means of the water turbine generator, the resource utilization rate is improved, the tail water pressure of the water turbine generator does not influence the rear end use requirement of the water supply system, and the flow rate through the water turbine accords with the water demand of the water supply system; a part of high-pressure water energy is consumed by the water turbine generating set, so that a large amount of water energy is prevented from being consumed at the pressure reducing valve, and the service lives of the pipeline and accessories are prolonged.
2. The bypass pipeline is provided with a shared water inlet pipe, a shared water outlet pipe and a plurality of bypass branches, the bypass branches are arranged between the water inlet pipe and the water outlet pipe in parallel, and each bypass branch is provided with a group of water turbine generating devices and electric regulating valves, so that the regulation range is wide, and continuous and accurate regulation during downstream water consumption fluctuation can be realized. Moreover, the basic model of hydroelectric power generation can be modularized, and for use occasions with different flow rates, pressure regulation and power generation can be realized by connecting a plurality of modules in parallel.
3. For extremely high overpressure, the maximum load of hydroelectric power generation exceeding a single set of bypass pipelines cannot reduce the pressure to the use requirement, and the pressure regulation and power generation can be realized by connecting a plurality of modularized bypass pipelines in series.
4. The pressure sensor is used for accurately monitoring and adjusting the pressure of the pipe network, and transmitting pressure data in real time to help operators to develop pipeline leakage control management, so that the life cycle of the pipeline can be prolonged.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (8)
1. The utility model provides a pipeline pressure control and power generation system, its characterized in that includes the water supply pipeline, be connected with the bypass pipeline on the water supply pipeline, the bypass pipeline has a plurality of bypass branches, every be equipped with a hydroelectric device on the bypass branch, hydroelectric device's upper reaches are equipped with electric control valve, hydroelectric device's low reaches are equipped with pressure sensor.
2. The pipeline pressure control and power generation system of claim 1, wherein the bypass pipeline has a common water inlet pipe and a common water outlet pipe, a plurality of bypass branches are arranged in parallel between the common water inlet pipe and the common water outlet pipe, and an electric regulating valve and a pressure sensor are respectively arranged at the upstream and downstream of the water turbine power generation device on each bypass branch.
3. The pipeline pressure control and power generation system according to claim 1 or 2, wherein the number of the bypass pipelines is plural, the plurality of bypass pipelines are sequentially connected to the water supply pipeline, and each bypass pipeline can independently operate.
4. The pipeline pressure control and power generation system according to claim 1 or 2, wherein the water inlet of the bypass pipeline and the water outlet of the bypass pipeline are provided with stop valves.
5. The pipeline pressure control and power generation system of claim 4, further comprising a control system configured to control the valve opening degree of the electrically operated regulator valve based on the pressure data information monitored by the pressure sensor such that the pressure at the downstream water end remains unchanged.
6. The pipeline pressure control and power generation system of claim 5, wherein the hydro-power generation device comprises a water turbine and a generator.
7. The pipeline pressure control and power generation system of claim 6, wherein the power generated by the generator is calculated from the following output equation of the turbine:
N＝9.8QHφ
in the formula, N is the output force of the water turbine, kW; q is the flow of the water turbine, m/s; h is the water head of the water turbine, m; phi is the efficiency of the turbine.
8. The pipeline pressure control and power generation system of claim 6, further comprising a power control panel in control connection with the generator, the power control panel in signal transmission connection with the control system.
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| CN202321437721.XU CN219974677U (en) | 2023-06-07 | 2023-06-07 | Pipeline pressure control and power generation system |
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| CN202321437721.XU CN219974677U (en) | 2023-06-07 | 2023-06-07 | Pipeline pressure control and power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116447066A (en) * | 2023-06-07 | 2023-07-18 | 中国建筑设计研究院有限公司 | Pipeline pressure control and power generation system and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116447066A (en) * | 2023-06-07 | 2023-07-18 | 中国建筑设计研究院有限公司 | Pipeline pressure control and power generation system and control method thereof |
| CN116447066B (en) * | 2023-06-07 | 2024-03-22 | 中国建筑设计研究院有限公司 | Pipeline pressure control and power generation system and control method thereof |
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