Anti-freezing water supply pipeline structure for construction water supply in winter
Through the dual-pipe water supply system and water circulation design, the problem of freezing of water supply pipes in construction in severe cold areas is solved, low-energy consumption and efficient anti-freezing effect is achieved, and operating costs are reduced.
Patent Information
- Application Number
- CN202422172103.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-05
AI Technical Summary
In winter construction in severe and cold areas, water supply pipes are prone to freezing, and the prior art is difficult to effectively prevent the internal icy of the pipeline and the operating cost is high.
A dual-pipe water supply system is designed, including No. 1 and No. 2 pipeline systems, a water supply system is built through a high-level pool and pump room, and a bypass pipe and control cabinet are used to adjust the frequency and power of the water pump, forming a water circulation system to maintain heat input in the pipeline, and the external wraps insulating material to relieve icing.
Maintain heat input by increasing flow rate and water circulation, reduce energy consumption, save operating costs, improve economic benefits, and prevent pipeline icing.
Smart Images
Figure CN223135242U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water supply pipeline structures, and particularly relates to a water supply pipeline structure for preventing freezing during winter construction in severe cold and cold regions. Background Technique
[0002] When supplying water in severe cold and cold regions, it is necessary to consider preventing freezing in winter. Generally, pipelines need to be buried below the frozen soil layer and insulation measures are taken. However, for the under-construction power station projects, the on-site terrain conditions are complex. Especially for some projects, the water intake points are located in existing reservoirs with steep reservoir banks, and it is very difficult to dig trenches and bury deeply. At the same time, there is also damage to the surrounding environment.
[0003] The insulation technology of the exposed laying scheme is difficult. Generally, double measures of wrapping insulation materials around the pipeline and electric heating are taken for treatment, and the measure cost and maintenance cost are high. In addition, the ice formation inside the pipeline is generally due to the long pipeline transportation distance and slow flow rate. Under the action of external low temperature, the heat of the water body inside the pipeline is gradually lost, resulting in ice formation.
[0004] Therefore, if a certain flow rate and energy exchange can be maintained inside the pipeline all the time, the ice formation inside the pipeline exposed in the low temperature environment can be prevented. Content of the Utility Model
[0005] The purpose of the utility model is to provide a water supply pipeline structure for preventing freezing during winter construction, which has reasonable structural design, increases the flow rate to relieve ice formation, maintains heat input through water circulation, reduces energy consumption, saves operation costs, and improves economic benefits.
[0006] In order to achieve the above purpose, the utility model is realized through the following technical solutions:
[0007] A water supply pipeline structure for preventing freezing during winter construction. A high-level water tank is set in the construction area. A water supply system is built between the high-level water tank and the water source. The water supply system includes a pump house set on the bank, a water pump in the pump house, a water intake pipeline between the water pump and the water source, and a water supply pipeline between the water pump and the high-level water tank. The water supply system is two pipeline systems including a first pipeline system and a second pipeline system. The first pipeline system includes a first water intake pipeline, a first water pump, and a first water supply pipeline. The second pipeline system includes a second water intake pipeline, a second water pump, and a second water supply pipeline. After the first water supply pipeline and the second water supply pipeline enter the high-level water tank, they are merged into one water outlet through a three-way pipe, and a water supply valve is set on the water outlet section of the water outlet.
[0008] A bypass pipe and a bypass valve are set near the second water pump on the second water supply pipeline. The bypass pipe bypasses the second water pump and connects the water source and the second water supply pipeline.
[0009] Further, the water intake pipeline extends into the water source to a certain depth to ensure that the water temperature for intake in winter is relatively high.
[0010] Further, the outer surfaces of the water intake pipeline and the water supply pipeline are wrapped with heat insulation materials.
[0011] Further, a control cabinet capable of adjusting the frequency and power is installed on the first water pump or the second water pump.
[0012] Further, a number of anchor blocks are arranged along the water supply pipeline.
[0013] Compared with the prior art, the present utility model has the following advantages:
[0014] The water supply pipeline structure for preventing freezing during winter construction of the present utility model has a reasonable structural design, increases the flow rate to relieve ice formation, maintains heat input through water circulation, reduces energy consumption, saves operation costs, and improves economic benefits.
[0015] Specifically, during the water supply period, the flow rate inside the pipeline during the water supply is accelerated through the double pipelines to relieve the problem of pipeline icing; during the period of stopping water supply, since both the inlet and outlet of the double-pipeline water circulation system are the water sources for construction water supply, a water circulation system that can continuously update the water body inside the pipeline is formed, so as to keep the pipeline in a state of continuous heat input, resist the heat loss along the water supply line, and prevent icing. At the same time, the head difference of the water circulation system is zero, and the energy required for the water pump is only the head loss along the pipeline. Due to the smooth inner wall of the steel pipe, the operation cost of the head loss instrument is also relatively low. Under both working conditions, the heat of the construction water supply source itself is used to balance the heat loss during the flow of water in the pipeline. For the construction water supply system with a relatively short usage period, the increased operation cost of adopting the structure of the present utility model is significantly more economically beneficial compared to the additional construction investment required for external heat insulation under adverse geological and topographical conditions or extreme low external temperature. Description of the Drawings
[0016] Figure 1 is the elevation layout schematic diagram of the present utility model.
[0017] Figure 2 is the schematic diagram of the pipeline system of the present utility model.
[0018] Figure 3 is the simplified schematic diagram of the circulating water path of the specific embodiment of the present utility model.
[0019] Reference numerals: 1, water source; 2, elevated water tank; 3, pump house; 4, water pump; 5, intake pipeline; 6, water supply pipeline; 7, anchor block (pier); 8, tee; 9, water supply valve; 10, bypass pipe; 11, bypass valve; 401, No. 1 water pump; 402, No. 2 water pump; 501, No. 1 intake pipeline; 502, No. 2 intake pipeline; 601, No. 1 water supply pipeline; 602, No. 2 water supply pipeline. Detailed implementation manners
[0020] The embodiments of the present utility model will be further described in detail below in conjunction with the accompanying drawings.
[0021] As Figure 1 shown, for the water supply pipeline structure for preventing freezing during winter construction, an elevated water tank 2 is arranged in the construction area, and a water supply system is built between the elevated water tank 2 and the water source. The water supply system includes a pump house 3 arranged on the shore, a water pump 4 in the pump house 3, an intake pipeline 5 between the water pump 4 and the water source 1, and a water supply pipeline 6 between the water pump 4 and the elevated water tank 2. The intake pipeline 5 extends into the water source 1 to a certain depth to ensure that the water temperature for water intake is relatively high in winter, and a number of anchor blocks (piers) 7 are arranged along the water supply pipeline 6. The intake pipeline 5 and the water supply pipeline 6 are wrapped with heat-insulating materials on the outside.
[0022] As Figure 2 shown, in order to form a closed circulating pipeline system, the water supply system is two pipeline systems including a No. 1 pipeline system and a No. 2 pipeline system. The No. 1 pipeline system includes a No. 1 intake pipeline 501, a No. 1 water pump 401 and a No. 1 water supply pipeline 601. The No. 2 pipeline system includes a No. 2 intake pipeline 502, a No. 2 water pump 402 and a No. 2 water supply pipeline 602. After the No. 1 water supply pipeline 601 and the No. 2 water supply pipeline 602 enter the elevated water tank 2, they are merged into one water outlet through a tee 8, and a water supply valve 9 is arranged on the water outlet section.
[0023] A bypass pipe 10 and a bypass valve 11 are arranged near the No. 2 water pump 402 on the No. 2 water supply pipeline 602. The bypass pipe 10 is arranged to bypass the No. 2 water pump 402 and connect the water source 1 with the No. 2 water supply pipeline 602. During the water supply period, the bypass valve 11 is closed; during the circulating heat preservation stage, the bypass valve 11 is opened, so that the circulating water bypasses the No. 2 water pump 402, avoiding the adverse impact of the reverse water flow on the stopped No. 2 water pump 402 and reducing the energy loss caused by the No. 2 water pump 402. The No. 1 intake pipeline 501 and the bypass pipe 10 are kept at a relatively long distance in the water source 1, which is more conducive to the water body with a relatively high temperature entering the circulating system.
[0024] A control cabinet capable of adjusting the frequency and power is installed on the No. 1 water pump 401 or the No. 2 water pump 402, and at least a control cabinet is installed on the No. 1 water pump 401, so as to reduce the energy consumed by the No. 1 water pump 401 during the period of stopping water supply to prevent ice formation.
[0025] The working principle of the present utility model is as follows: During water supply, first close the bypass valve 11, then open the water supply valve 9, and then simultaneously start the first water pump 401 and the second water pump 402 to supply water to the elevated water tank 2; Since the outlet position is very high, the power provided by the water pump 4 also needs to overcome the pressure difference between the inlet and the outlet. During the period of stopping water supply, first open the bypass valve 11, then close the water supply valve 9, then turn off the second water pump 402, and further adjust the power and flow rate of the first water pump 401; As Figure 3 shown in the simplified schematic of the water circuit circulation during the period of stopping water supply, at this time the pressures at the inlet and the outlet are the same, and the water circulation can be achieved as long as the frictional resistance of the pipeline to the water is overcome, and the energy loss at this time is also relatively low.
[0026] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the concept of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as within the protection scope of the present utility model.
Claims
1. The water supply pipeline structure for preventing freezing during winter construction. A high-level water tank is set in the construction area, and a water supply system is built between the high-level water tank and the water source. The water supply system includes a pump house located on the shore, a water pump in the pump house, a water intake pipeline between the water pump and the water source, and a water supply pipeline between the water pump and the high-level water tank. It is characterized in that: The water supply system is composed of two pipeline systems, namely the first pipeline system and the second pipeline system. The first pipeline system includes a first water intake pipeline, a first water pump, and a first water supply pipeline. The second pipeline system includes a second water intake pipeline, a second water pump, and a second water supply pipeline. After the first water supply pipeline and the second water supply pipeline enter the elevated water tank, they are merged into an outlet through a tee, and a water supply valve is arranged at the outlet section of the outlet. A bypass pipe and a bypass valve are arranged near the second water pump on the second water supply pipeline. The bypass pipe bypasses the second water pump and connects the water source with the second water supply pipeline.
2. The water supply pipeline structure for preventing freezing during winter construction according to claim 1, characterized in that: The water intake pipeline extends into the water source to a certain depth to ensure that the water intake temperature is relatively high in winter.
3. The water supply pipeline structure for preventing freezing during winter construction according to claim 1 or 2, characterized in that: The outer parts of the water intake pipeline and the water supply pipeline are wrapped with heat preservation materials.
4. The water supply pipeline structure for preventing freezing during winter construction according to claim 1, characterized in that: A control cabinet that can adjust the frequency and power is installed on the first water pump or the second water pump.
5. The water supply pipeline structure for preventing freezing during winter construction according to claim 1, characterized in that: Several anchor blocks are arranged along the water supply pipeline.