CN113028290A - Pipeline system with flushing function and flushing method - Google Patents
Pipeline system with flushing function and flushing method Download PDFInfo
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- CN113028290A CN113028290A CN202110469086.2A CN202110469086A CN113028290A CN 113028290 A CN113028290 A CN 113028290A CN 202110469086 A CN202110469086 A CN 202110469086A CN 113028290 A CN113028290 A CN 113028290A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
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Abstract
The invention provides a pipeline system with a flushing function, which comprises a return water main pipe, a refrigeration equipment unit, a water supply main pipe and a tail end equipment unit which are sequentially connected, wherein a bypass branch and a sand filtration branch are connected in parallel between the return water main pipe and the tail end equipment unit, the sand filtration branch comprises sand filtration equipment for filtering sundries in the pipeline system, and the sand filtration equipment discharges the sundries out of the pipeline system through backwashing. According to the pipeline system, part of water flows into the circulating system after passing through the sand filtration equipment, and impurities in the pipeline system are gradually discharged through backwashing of the sand filtration equipment; in the whole process of removing the impurities, the water in the circulating water pump and the emptying pipeline system does not need to be stopped, the continuous circulating work for 24 hours can be realized, the flushing efficiency of the system is improved, and the water resource is saved. The invention also provides a flushing method using the pipeline system with the flushing function.
Description
Technical Field
The invention relates to the technical field of pipeline installation engineering, in particular to a pipeline system with a flushing function and a flushing method.
Background
In the central air-conditioning system of large-scale market, office building and industrial factory building, the pipe installation is whole air-conditioning system's key to along with the maximization of building, air-conditioning system's pipe diameter also increases gradually, and pipeline circulation distance extension, the equipment that the system was taken is more and more. During construction, the pipeline system is hard to fall into sand, welding rod, welding slag and other impurities, and the inner wall of the pipeline has scale deposit and iron sheet deposit on the bottom of the pipeline. But once the flow rate is less than the start-up rate, debris will be deposited. Because the pipe diameter of a fan coil at the tail end of an air conditioning system and the heat exchange coils in tail-end equipment of an air conditioning unit and the like are small, the flow speed is slow, impurities can be gradually deposited, the water passing section of the pipe diameter is smaller and smaller to form blockage, and therefore the tail-end equipment cannot refrigerate or heat.
In order to prevent equipment from being blocked in the running process so as to influence the refrigeration or heating of a system, the pipeline system is required to be flushed after the pipeline system is installed, the traditional method is that water in the system is filled up through a constant-pressure water filling device, then a circulating water pump is started to circulate the water in the system, the water in the system is drained completely after the water is circulated for a period of time, and then water is filled. The above steps are repeated for a plurality of times to achieve the purpose of washing. This method has several disadvantages: 1. the water discharging and supplementing time is long each time; 2. a large amount of water resources need to be wasted; 3. because the air entering the system can be caused by water discharging and water replenishing at every time, the inner wall of the pipeline can be repeatedly rusted to influence the water quality.
In view of the above, there is a need for a pipeline system with flushing function and a flushing method thereof to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a pipeline system with a flushing function, which aims to overcome the defects of the existing pipeline system in flushing sundries in a pipeline, and the specific technical scheme is as follows:
the utility model provides a pipe-line system that possesses function of washing, is including the female pipe of return water, refrigeration plant unit, the female pipe of water supply and the end equipment unit that connect gradually, parallelly connected bypass branch road and the sand filtration branch road of being equipped with between the female pipe of return water and the end equipment unit, the sand filtration branch road is including the sand filtration equipment that is arranged in filtering debris among the pipe-line system, the sand filtration equipment passes through the back flush with debris discharge pipe-line system.
Preferably, in the above technical solution, the refrigeration equipment unit includes a plurality of refrigeration equipment branches arranged in parallel; the refrigeration equipment branch comprises a shut-off valve, a pressure gauge, a filter, a pressure gauge, a circulating water pump, a shut-off valve, a refrigeration host and a shut-off valve which are sequentially connected from a return water main pipe to a water supply main pipe.
Preferably, the working state of the branch of the refrigeration equipment is judged through the numerical value difference between the pressure gauges on the two sides of the filter.
Preferably among the above technical scheme, end equipment unit includes water collector, water knockout drum and end equipment branch road, parallelly connected many end equipment branch roads that set up between water knockout drum and the water collector, the water knockout drum is connected and is supplied water the female pipe, bypass branch road and sand filter branch road are connected to the water collector.
Preferably, in the above technical solution, the end equipment branch includes end equipment and shut-off valves disposed at two ends of the end equipment; the tail end equipment is detachably connected with the shutoff valves at the two ends, and the refrigeration host is detachably connected with the shutoff valves at the two ends; and a temporary pipeline is adopted to replace a terminal device and a refrigeration host to realize flushing of the pipeline system.
Preferably, the sand filtration equipment is provided with shut-off valves at two ends, the bypass branch is provided with a shut-off valve, and the water collector is further provided with a sampling valve.
The preferable among the above technical scheme still includes level pressure moisturizing device, level pressure moisturizing device and the female pipe intercommunication of return water for to the water supply of pipe-line system.
Preferred among the above technical scheme, still include pressure sensor, pressure sensor sets up on the female pipe of return water, just pressure sensor is connected with level pressure moisturizing device.
The invention also provides a flushing method using the pipeline system with the flushing function, which comprises the following steps:
s1: respectively disconnecting the terminal equipment and the refrigeration host from the shutoff valves at two ends, and connecting the terminal equipment and the refrigeration host with the corresponding shutoff valves by adopting temporary pipelines to replace the terminal equipment and the refrigeration host;
s2: supplementing water through a constant-pressure water supplementing device, and stopping supplementing water when the pressure value of the pipeline system reaches a set value; after water is supplemented, at least one refrigeration equipment branch is started to circularly flush the pipeline system;
s3: detecting the water flow speed on the tail end equipment branch, closing one tail end equipment branch when the water flow speed is detected to be lower than the flushing flow speed, detecting the water flow speed again, and continuing to close one tail end equipment branch until the water flow speed is higher than the flushing flow speed if the water flow speed is still lower than the flushing flow speed;
s4: opening the sand filtration branch, reducing the opening of a shut-off valve on the bypass branch, and allowing part of water to pass through the sand filtration equipment and then enter the circulation of the pipeline system; when the resistance of the sand filtration equipment reaches a critical value, closing the shutoff valves at the two ends of the sand filtration equipment, simultaneously opening all the shutoff valves of the bypass branch, and discharging sundries through the self back washing function of the sand filtration equipment;
s5: sampling water quality through a sampling valve on the water collector, entering the next step when the detected water quality reaches the standard, and repeating the step S4 when the detected water quality does not reach the standard;
s6: after the flushing is finished, the temporary pipeline is detached, and the terminal equipment and the refrigeration host are connected into the pipeline system again to realize the normal work of the terminal equipment and the refrigeration host.
Preferably, in the above technical solution, in step S2, the pressure value in the pipeline system is detected by the pressure sensor.
The technical scheme of the invention has the following beneficial effects:
according to the pipeline system, part of water flows into the circulating system after passing through the sand filtration equipment, and impurities in the pipeline system are gradually discharged through backwashing of the sand filtration equipment; in the whole process of removing the impurities, the water in the circulating water pump and the emptying pipeline system does not need to be stopped, the continuous circulating work for 24 hours can be realized, the flushing efficiency of the system is improved, and the water resource is saved.
The working state of the branch of the refrigeration equipment is judged through the numerical difference between the pressure gauges on the two sides of the filter, whether the work of the filter and the circulating water pump is normal or not can be judged through the numerical difference, whether the filter is seriously blocked or not can be judged, the blocking problem in a circulating pipeline can be conveniently and timely found, and the maintenance can be carried out as early as possible. When a pipeline system is washed, the temporary pipeline is adopted to replace the terminal equipment and the refrigeration host machine, so that the situation that sundries in the washing process enter the terminal equipment and the refrigeration host machine to cause equipment faults and influence the service life of the equipment is prevented.
The pressure sensor is used for detecting the pressure inside the pipeline system, when the pressure value is lower than the circulating flushing requirement or the equipment working requirement, water can be supplemented to the pipeline system through the constant-pressure water supplementing device, intelligent water supplementing is realized, and the normal work of the pipeline system is ensured.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall construction of a piping system;
the system comprises a water supply main pipe 1, a water collector 2, a water collector 3, a shut-off valve 4, end equipment 5, a water separator 6, an end equipment branch 7, a refrigeration equipment branch 8, a refrigeration host machine 9.1, a first closed circulating water pump 9.2, a second closed circulating water pump 9.3, a third closed circulating water pump 10, a pressure gauge 11, a filter 12, a constant pressure water supplementing device 13, a pressure sensor 14, a water return main pipe 15, a bypass branch 16, a sand filtration branch 17, sand filtration equipment 18 and a sampling valve.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1:
referring to fig. 1, a pipeline system with a flushing function comprises a return water main pipe 14, a refrigeration equipment unit, a water supply main pipe 1 and a terminal equipment unit which are connected in sequence, a bypass branch 15 and a sand filtration branch 16 are connected in parallel between the return water main pipe 14 and the terminal equipment unit, the sand filtration branch 16 comprises a sand filtration device 17 for filtering sundries in the pipeline system, and the sand filtration device 17 discharges the sundries out of the pipeline system through backwashing.
The refrigeration equipment unit comprises a plurality of refrigeration equipment branches 7 which are arranged in parallel; the refrigeration equipment branch 7 comprises a shut-off valve 3, a pressure gauge 10, a filter 11, a pressure gauge 10, a circulating water pump, a shut-off valve 3, a refrigeration host 8 and a shut-off valve 3 which are sequentially connected from a return water main pipe 14 to a water supply main pipe 1.
Further, the working state of the branch 7 of the refrigeration equipment is judged through the numerical difference between the pressure gauges 10 on the two sides of the filter 11, whether the filter and the circulating water pump work normally or not can be judged through the numerical difference, whether the filter is seriously blocked or not can be judged, the blocking problem in a circulating pipeline can be conveniently found in time, and the maintenance can be carried out as soon as possible.
Referring to fig. 1, in the present embodiment, three refrigeration equipment branches are collectively and parallelly disposed, wherein the three refrigeration equipment branches are respectively powered by a first closed circulation water pump 9.1, a second closed circulation water pump 9.2 and a third closed circulation water pump 9.3.
Preferably, end equipment unit includes water collector 2, water knockout drum 5 and end equipment branch road 6, parallelly connected many end equipment branch roads 6 that set up between water knockout drum 5 and the water collector 2, specifically parallelly connected three end equipment branch roads that set up in this embodiment, water knockout drum 5 connects water supply main pipe 1, bypass branch road 15 and sand are strained branch road 16 to water collector 2 connection, still be equipped with sample valve 18 on the water collector 2.
The tail end equipment branch 6 comprises tail end equipment 4 and shut-off valves 3 arranged at two ends of the tail end equipment 4; the tail end equipment 4 is detachably connected with the shutoff valves 3 at the two ends, and the refrigeration host 8 is detachably connected with the shutoff valves 3 at the two ends; when a pipeline system is washed, the temporary pipeline is adopted to replace the terminal equipment 4 and the refrigeration host 8, so that the situation that sundries in the washing process enter the terminal equipment and the refrigeration host to cause equipment failure and influence on the service life of the equipment is prevented.
Referring to fig. 1, the two ends of the sand filtration device 17 are provided with the shut-off valves 3, and the bypass branch 15 is provided with the shut-off valves 3, so that the on-off of the sand filtration branch and the bypass branch can be controlled respectively, and the normal working mode and the flushing mode of the pipeline system can be switched.
Further, the pipeline system with the flushing function further comprises a constant-pressure water supplementing device 12, and the constant-pressure water supplementing device 12 is communicated with the water return main pipe 14 and used for supplementing water to the pipeline system.
Preferably, the pipeline system with the flushing function further comprises a pressure sensor 13, the pressure sensor 13 is arranged on the water return main pipe 14, and the pressure sensor 13 is connected with the constant-pressure water replenishing device 12. The pressure sensor is used for detecting the pressure inside the pipeline system, and when the pressure value is lower than the circulating flushing requirement or the equipment working requirement, the pipeline system can be supplemented with water through the constant-pressure water supplementing device, so that the normal work of the pipeline system is ensured.
The constant-pressure water supplementing device and the sand filtering equipment are both in the prior art, the existing products can be directly purchased, and the specific model selection is determined according to the pressure in a pipeline system.
The embodiment also provides a flushing method using the pipeline system with the flushing function, which comprises the following steps:
s1: the tail end equipment 4 and the refrigeration host 8 are respectively detached from the shutoff valves 3 at the two ends, and temporary pipelines are adopted to be connected with the corresponding shutoff valves 3 to replace the tail end equipment 4 and the refrigeration host 8;
s2: supplementing water through a constant-pressure water supplementing device 12, and stopping supplementing water when the pressure value of the pipeline system reaches a set value; after the water supplement is completed, at least one refrigeration equipment branch 7 is started (in this embodiment, two refrigeration equipment branches are started, specifically, branches of a first closed circulation water pump and a second closed circulation water pump are started, and a branch of a third closed circulation water pump is used as a standby branch) to circularly flush the pipeline system; preferably, the pressure value in the pipeline system is detected by the pressure sensor 13 in step S2;
s3: detecting the water flow speed (preferably by using an ultrasonic flowmeter) on the terminal equipment branch 6, closing one terminal equipment branch 6 when the water flow speed is detected to be lower than the flushing flow speed, detecting the water flow speed again, and continuing to close one terminal equipment branch 6 until the water flow speed is higher than the flushing flow speed if the water flow speed is still lower than the flushing flow speed; in the embodiment, the washing flow rate is 1.5m/s, and the washing flow rate refers to the water flow rate which can enable sundries in the pipeline to move.
S4: opening a sand filtration branch 16, reducing the opening degree of a shut-off valve 3 on a bypass branch 15, and allowing part of water to pass through a sand filtration device 17 and then enter a circulation of a pipeline system; when the resistance of the sand filtration equipment 17 reaches a critical value, closing the shut-off valves 3 at two ends of the sand filtration equipment 17, simultaneously opening all the shut-off valves 3 of the bypass branch 15, and discharging sundries through the self back washing function of the sand filtration equipment 17;
s5: sampling water quality through a sampling valve 18 on the water collector 2, entering the next step when the detected water quality reaches the standard, and repeating the step S4 when the detected water quality does not reach the standard;
s6: after the flushing is finished, the temporary pipeline is detached, and the terminal equipment 4 and the refrigeration host 8 are connected into the pipeline system again to realize the normal work of the terminal equipment 4 and the refrigeration host 8.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a pipe-line system that possesses function of washing, its characterized in that, is including the female pipe of return water (14), refrigeration plant unit, the female pipe of water supply (1) and the end equipment unit that connect gradually, parallelly connected being equipped with bypass branch road (15) and sand filtration branch road (16) between the female pipe of return water (14) and the end equipment unit, sand filtration branch road (16) are including sand filtration equipment (17) that are arranged in filtering debris among the pipe-line system, sand filtration equipment (17) are through back flush discharge pipe-line system with debris.
2. Piping system with flushing function according to claim 1, characterized in that the refrigeration equipment unit comprises a plurality of refrigeration equipment branches (7) arranged in parallel; the refrigeration equipment branch (7) comprises a shut-off valve (3), a pressure gauge (10), a filter (11), the pressure gauge (10), a circulating water pump, the shut-off valve (3), a refrigeration host (8) and the shut-off valve (3) which are sequentially connected from a return water main pipe (14) to a water supply main pipe (1).
3. The piping system with flushing function according to claim 2, characterized in that the operating state of the branch (7) of the refrigeration equipment is determined by the difference in value between the pressure gauges (10) on both sides of the filter (11).
4. The piping system with flushing function according to claim 3, characterized in that the end equipment unit comprises a water collector (2), a water separator (5) and end equipment branches (6), a plurality of end equipment branches (6) are arranged in parallel between the water separator (5) and the water collector (2), the water separator (5) is connected with a water supply main pipe (1), and the water collector (2) is connected with a bypass branch (15) and a sand filtration branch (16).
5. The pipe system with flushing function according to claim 4, characterized in that the end equipment branch (6) comprises an end equipment (4) and shut-off valves (3) arranged at both ends of the end equipment (4); the tail end equipment (4) is detachably connected with the shutoff valves (3) at the two ends, and the refrigeration host (8) is detachably connected with the shutoff valves (3) at the two ends; and a temporary pipeline is adopted to replace the tail end equipment (4) and the refrigeration host (8) to flush the pipeline system.
6. The piping system with flushing function according to claim 5, characterized in that the sand filtration equipment (17) is provided with shut-off valves (3) at both ends, the bypass branch (15) is provided with a shut-off valve (3), and the water collector (2) is further provided with a sampling valve (18).
7. The pipeline system with the flushing function according to any one of claims 1-6, further comprising a constant pressure water replenishing device (12), wherein the constant pressure water replenishing device (12) is communicated with the return water main pipe (14) and is used for replenishing water to the pipeline system.
8. The piping system with a flushing function according to claim 7, further comprising a pressure sensor (13), wherein the pressure sensor (13) is arranged on the water return main pipe (14), and the pressure sensor (13) is connected with the constant pressure water replenishing device (12).
9. A method of flushing a pipe system with a flushing function according to any one of claims 1-8, characterized in that it comprises the following steps:
s1: the tail end equipment (4) and the refrigeration host (8) are respectively detached from the shutoff valves (3) at the two ends, and temporary pipelines are adopted to be connected with the corresponding shutoff valves (3) to replace the tail end equipment (4) and the refrigeration host (8);
s2: water is supplemented through a constant pressure water supplementing device (12), and water supplementing is stopped when the pressure value of the pipeline system reaches a set value; after water supplement is completed, at least one refrigeration equipment branch (7) is started to carry out circulating flushing on the pipeline system;
s3: detecting the water flow speed on the tail end equipment branch (6), closing one tail end equipment branch (6) when the water flow speed is detected to be lower than the flushing flow speed, detecting the water flow speed again, and continuing closing one tail end equipment branch (6) until the water flow speed is higher than the flushing flow speed if the water flow speed is still lower than the flushing flow speed;
s4: opening the sand filtration branch (16), reducing the opening degree of a shut-off valve (3) on the bypass branch (15), and allowing part of water to pass through the sand filtration equipment (17) and then enter the circulation of the pipeline system; when the resistance of the sand filtration equipment (17) reaches a critical value, closing the shut-off valves (3) at the two ends of the sand filtration equipment (17) and simultaneously opening all the shut-off valves (3) of the bypass branch (15), and discharging sundries through the self back washing function of the sand filtration equipment (17);
s5: sampling water quality through a sampling valve (18) on the water collector (2), entering the next step when the detected water quality reaches the standard, and repeating the step S4 when the detected water quality does not reach the standard;
s6: after the flushing is finished, the temporary pipeline is disassembled, and the terminal equipment (4) and the refrigeration host (8) are connected into the pipeline system again to realize the normal work of the terminal equipment (4) and the refrigeration host (8).
10. The method for flushing a piping system with a flushing function according to claim 9, characterized in that the pressure value in the piping system is detected by the pressure sensor (13) in step S2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110469086.2A CN113028290A (en) | 2021-04-28 | 2021-04-28 | Pipeline system with flushing function and flushing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110469086.2A CN113028290A (en) | 2021-04-28 | 2021-04-28 | Pipeline system with flushing function and flushing method |
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| CN113028290A true CN113028290A (en) | 2021-06-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113663991A (en) * | 2021-07-23 | 2021-11-19 | 上海宝冶集团有限公司 | Quick flushing method for water replenishing before pump and water draining after pump in water pipeline of air conditioner |
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| CN113663991A (en) * | 2021-07-23 | 2021-11-19 | 上海宝冶集团有限公司 | Quick flushing method for water replenishing before pump and water draining after pump in water pipeline of air conditioner |
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