CN215211264U - Non-negative pressure water supply equipment with water hammer protection function - Google Patents
Non-negative pressure water supply equipment with water hammer protection function Download PDFInfo
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- CN215211264U CN215211264U CN202121254573.9U CN202121254573U CN215211264U CN 215211264 U CN215211264 U CN 215211264U CN 202121254573 U CN202121254573 U CN 202121254573U CN 215211264 U CN215211264 U CN 215211264U
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Abstract
The utility model discloses a non-negative pressure water supply device with water hammer protection function, which comprises a water inlet pipe, a steady flow tank, a water pump inlet header pipe, a variable frequency water pump unit, a water pump outlet header pipe and a water supply pipe which are connected in sequence, wherein a first water hammer eliminator is arranged between the steady flow tank and the water pump inlet header pipe; the first water hammer eliminator comprises a shell, a water inlet pipe and a water outlet pipe, wherein the water inlet pipe is connected with the steady flow tank, and the water outlet pipe is connected with the variable frequency water pump unit; a partition board is horizontally arranged in the shell and divides the shell into a front flow passage and a rear flow passage, and the front flow passage and the rear flow passage are communicated through a flow passage opening; and a pressure reducing pore plate is arranged at the inlet of the rear flow passage. The utility model discloses no negative pressure water supply equipment through set up the water hammer annihilator before getting into frequency conversion water pump unit, slows down the velocity of flow of rivers in the pipeline, weakens the pressure rapid oscillation that water supply equipment leads to the pipeline to produce because of having a power failure suddenly, makes the water hammer phenomenon obtain obvious control, guarantees water supply equipment's steady operation.
Description
Technical Field
The utility model belongs to the technical field of the municipal water supply, particularly, relate to a no negative pressure water supply equipment with water hammer safeguard function.
Background
Secondary pressurizing water supply equipment is increasingly applied to high-rise water supply, and two ends of non-negative pressure water supply equipment are respectively connected with a municipal pipe network and a user pipe network. When the water supply equipment stops pumping suddenly, the flow rate of water changes remarkably, the pressure of a pipe network changes rapidly, pressure oscillation occurs repeatedly at an inlet and an outlet of the water supply equipment to generate a water hammer phenomenon, the pressure in a pipeline increases rapidly, and the equipment and the pipeline can be damaged seriously.
Disclosure of Invention
The utility model is not enough to the aforesaid, a no negative pressure water supply equipment with water hammer safeguard function is provided, weakens the pressure that water supply equipment leads to the pipeline to produce because of having a power failure suddenly and sharply vibrates, makes the water hammer phenomenon obtain obvious control, guarantees secondary water supply equipment's steady operation.
In order to solve the technical problem, the embodiment of the utility model provides an adopt following technical scheme: the non-negative pressure water supply equipment with the water hammer protection function comprises a water inlet pipe, a steady flow tank, a water pump water inlet main pipe, a variable frequency water pump unit, a water pump water outlet main pipe and a water supply pipe which are sequentially connected, wherein a first water hammer eliminator is arranged between the steady flow tank and the water pump water inlet main pipe; the first water hammer eliminator comprises a shell, a water inlet pipe and a water outlet pipe, wherein the water inlet pipe is connected with the steady flow tank, and the water outlet pipe is connected with the variable frequency water pump unit; a partition board is horizontally arranged in the shell, the partition board divides the shell into a front flow passage and a rear flow passage, and the front flow passage and the rear flow passage are communicated through a flow passage opening; the water inlet pipe is communicated with the inlet of the front runner, and the water outlet pipe is communicated with the outlet of the rear runner; and a pressure reducing pore plate is arranged at the inlet of the rear flow passage.
As the embodiment of the utility model provides a further improvement, the diameter of casing is 1.8 ~ 2.2 times of inlet tube diameter.
As the embodiment of the utility model provides a further improvement, the via hole area more than or equal to 1.1 ~ 1.2 times of inlet tube sectional area of decompression orifice plate.
As a further improvement of the embodiment of the utility model, a second water hammer eliminator is arranged between the water pump outlet main and the water supply pipe.
As a further improvement of the embodiment of the utility model, a straight-through pipeline is connected between the water pump water inlet main pipe and the water pump water outlet main pipe, and the straight-through pipeline is connected in parallel with the variable frequency water pump unit; the straight-through pipeline is provided with a first check valve and a first butterfly valve, an energy accumulator is arranged between the first check valve and the first butterfly valve, and an air bag filled with gas is arranged in the energy accumulator.
As the embodiment of the utility model provides a further improvement, be equipped with the vacuum inhibitor on the stationary flow jar.
As the embodiment of the utility model provides a further improvement, frequency conversion water pump unit includes the water pipe and sets gradually second butterfly valve, frequency conversion water pump, second check valve and the third butterfly valve on the water pipe.
As the embodiment of the utility model provides a further improvement, frequency conversion water pump unit is 2 ~ 3 groups, and frequency conversion water pump unit connects in parallel to be set up between water pump inlet manifold and water pump outlet manifold.
As a further improvement of the embodiment of the utility model, be equipped with first pressure sensor on the water pipe.
As the embodiment of the utility model provides a further improvement, be equipped with second pressure sensor on the water pump outlet manifold.
Compared with the prior art, the technical scheme of the utility model following beneficial effect has: the utility model provides a no negative pressure water supply equipment with water hammer safeguard function through set up the water hammer annihilator before getting into frequency conversion water pump unit, slows down the velocity of flow of rivers in the pipeline, reduces and changes the transmission mode of mechanical wave, weakens the pressure that water supply equipment leads to the pipeline to produce because of having a power failure suddenly and sharply vibrates, makes the water hammer phenomenon obtain obvious control, guarantees water supply equipment's steady operation, improves the water supply quality.
Drawings
Fig. 1 is a schematic structural view of a water supply apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a water hammer arrestor according to an embodiment of the present invention.
The figure shows that: the device comprises a water inlet pipe 1, a first pressure sensor 2, a vacuum suppressor 3, a steady flow tank 4, a water supply pipe 6, a first water hammer eliminator 7, a shell 71, a water inlet pipe 72, a water outlet pipe 73, a partition plate 74, a pressure reduction pore plate 75, a flow passing port 76, an energy accumulator 8, a second pressure sensor 9, a water pump water outlet main pipe 10, a third butterfly valve 11, a second check valve 12, a variable frequency water pump 13, a second butterfly valve 14, a water pump water inlet main pipe 15 and a second water hammer eliminator 16.
Detailed Description
The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.
The embodiment of the utility model provides a no negative pressure water supply equipment with water hammer safeguard function, as shown in fig. 1, including water pipe 1, stationary flow jar 4, water pump inlet manifold 15, frequency conversion water pump unit, water pump outlet manifold 10 and delivery pipe 6, the water inlet and the municipal water pipe network connection of water pipe 1 come, the delivery port and the water inlet of stationary flow jar 4 of water pipe 1 are connected, the delivery port of stationary flow jar 4 passes through water pump inlet manifold 15 and is connected with the water inlet of frequency conversion water pump unit, the delivery port of frequency conversion water pump unit passes through water pump outlet manifold 10 and is connected with the water inlet of delivery pipe 6, the delivery port and the user pipe network connection of delivery pipe 6.
And a first water hammer eliminator 7 is also connected between the flow stabilizing tank 4 and the water pump water inlet main pipe 15. As shown in fig. 2, the first water hammer arrestor 7 includes a housing 71, a water inlet pipe 72 and a water outlet pipe 73, the water inlet pipe 72 is connected to the water outlet of the steady flow tank 4, and the water outlet pipe 73 is connected to the water pump inlet manifold 15. A partition plate 74 is horizontally disposed in the housing 71, and the partition plate 74 partitions the interior of the housing 71 into a front flow passage and a rear flow passage, which are communicated with each other through a flow passing port 76. The front runner is positioned above the rear runner, and the cross-sectional areas of the front runner and the rear runner are equal. The inlet pipe 72 is communicated with the inlet of the front flow passage, and the outlet pipe 73 is communicated with the outlet of the rear flow passage. The entrance of the rear runner is provided with a pressure reducing orifice plate 75, and a plurality of through holes are distributed on the pressure reducing orifice plate 75. To ensure a stable flow, it is preferable that the diameter of the inlet pipe 72 is equal to the diameter of the outlet pipe 73.
The non-negative pressure water supply equipment with the water hammer protection function of the above embodiment, when the water pump is suddenly stopped in the operation process, at the water pump inlet, the municipal incoming water flows into the first water hammer eliminator 7. The fluid flows from the water inlet pipe 72 into the front flow passage through the inlet of the front flow passage, flows rapidly in the front flow passage, and when flowing to the outlet of the front flow passage, violently impacts the end part of the shell 71 to reduce the speed of the shell, turns back through the flow passing port 76, enters the rear flow passage after changing the direction, and then is buffered for the second time through the pressure reducing pore plate 75, so that the speed of the water flow is reduced again, the impact effect of a water hammer is reduced, the long-term reliable use of the water pump and the pipeline is protected, and the water supply quality is improved.
Preferably, the diameter of the casing 71 is 1.8 to 2.2 times the diameter of the water inlet pipe 72. Thereby ensuring that the sectional areas of the front runner and the rear runner are not less than the sectional area of the water inlet pipe, and ensuring that the flow is stable.
Preferably, the area of the through hole of the pressure reducing orifice plate 75 is 1.1 to 1.2 times or more the sectional area of the water inlet pipe. The sectional areas of the front runner and the rear runner are not less than the sectional area of the water inlet pipe, so that the flow is stable.
Preferably, a second water hammer arrestor 16 is provided between the pump outlet header 10 and the water supply pipe 6. The second water hammer arrestor 16 differs from the first water hammer arrestor 7 only in that the second water hammer arrestor is not provided with a pressure reducing orifice. Specifically, the second water hammer arrestor 16 includes a housing, a water inlet pipe connected to the water outlet of the water pump outlet manifold 10, and a water outlet pipe connected to the water supply pipe 6. A partition board is horizontally arranged in the shell and divides the shell into a front flow passage and a rear flow passage, and the front flow passage and the rear flow passage are communicated through a flow passage opening. The front runner is positioned above the rear runner, and the cross-sectional areas of the front runner and the rear runner are equal. The water inlet pipe is communicated with the inlet of the front flow passage, and the water outlet pipe is communicated with the outlet of the rear flow passage.
When the water pump stops suddenly in the operation process, municipal incoming water flows into the first water hammer eliminator 7 at the water pump inlet, so that the water hammer phenomenon at the water supply equipment inlet can be effectively controlled. At the outlet of the water pump, the water flows into the second water hammer eliminator 16, so that the water hammer phenomenon at the outlet of the water supply equipment can be effectively controlled, and the water supply pipe 6 is protected. The effect of sharp pressure oscillation caused by sudden power failure of the water supply equipment is further weakened, the water hammer phenomenon is effectively controlled, and the stable operation of the water supply equipment is guaranteed.
As a preferred example, a straight pipeline is connected between the water pump inlet header pipe 15 and the water pump outlet header pipe 10, and the straight pipeline is connected in parallel with the variable frequency water pump unit. The straight pipeline is provided with a first check valve and a first butterfly valve, an energy storage device 8 is arranged between the first check valve and the first butterfly valve, and a water inlet of the energy storage device 8 is connected with the straight pipeline. The accumulator 8 is provided with an air bag filled with gas.
In the above embodiment, when the pressure of the municipal water rises, the gas in the bladder is compressed by the water until the line pressure no longer rises. When municipal water pressure drops, compressed air in the air bag expands to press water into the straight pipeline, so that the pressure drop of the pipeline is slowed down, and the effect of stabilizing the water supply pressure of the system is achieved.
As a preferable example, the steady flow tank 4 is provided with a vacuum suppressor 3. The vacuum suppressor 3 is used for suppressing negative pressure generated in the steady flow tank 4 and keeping municipal water supply pipe network pressure balance.
Preferably, the variable frequency water pump unit comprises a water pipe, and a second butterfly valve 14, a variable frequency water pump 13, a second check valve 12 and a third butterfly valve 11 which are sequentially arranged on the water pipe. And a second butterfly valve 14 is positioned at the upstream of the variable frequency pump 13 and is used for controlling the water inlet flow of the water pipe. The variable frequency water pump 13 runs, the third butterfly valve 11 is used for controlling the water outlet flow and pressure, and the second check valve 12 is used for preventing the high-pressure water of the water pipe from flowing backwards when the variable frequency water pump 13 stops working. On the basis of municipal water supply pipe network pressure, pressure is superposed according to the requirements of users to supply water, and pressurized water supply is carried out according to the principle of how much difference is compensated, so that energy is effectively saved.
Preferably, the frequency conversion water pump unit is 2 ~ 3 groups, and the frequency conversion water pump unit is parallelly connected to be set up between water pump inlet manifold 15 and water pump outlet manifold 10. A plurality of groups of variable frequency water pump units are arranged between the water pump inlet header pipe 15 and the water pump outlet header pipe 10 in parallel, the variable frequency water pump units are independent from one another, and one or more groups of variable frequency water pump units can be selected to operate according to actual requirements.
Preferably, the water inlet pipe 1 is provided with a first pressure sensor 2, and the water outlet main pipe 10 of the water pump is provided with a second pressure sensor 9. A first pressure sensor 2 is provided for observing the pressure in the water supply line 1 and a second pressure sensor 9 is provided for observing the pressure in the water pump outlet manifold 10.
The working process of the non-negative pressure water supply equipment with the water hammer protection function in the embodiment is as follows:
when water needs to be supplied to a user pipe network, the variable frequency water pump 13 is started, pressure is superposed according to the requirements of users on the basis of municipal pipe network pressure, water is supplied in a pressurized mode according to the difference supplement principle, and energy is effectively saved. When the water supply pressure of municipal water supply pipe network can directly satisfy the demand of user pipe network, close variable frequency water pump 13, open the first butterfly valve on the through pipeline, the incoming water flows to user pipe network through the through pipeline this moment.
When the variable frequency water pump 13 is suddenly stopped in the operation process, municipal incoming water flows into the first water hammer eliminator 7, fluid flows into the front flow channel from the water inlet pipe 72 through the inlet of the front flow channel and rapidly flows in the front flow channel, when the incoming water flows to the outlet of the front flow channel, the end of the shell 71 is severely impacted to reduce the speed of the shell, the fluid is baffled through the overflowing port 76 and changes the direction to enter the rear flow channel, and then the fluid is secondarily buffered through the decompression orifice plate 75 to reduce the speed of the water flow again, so that the impact effect of the water hammer is reduced, and the water pump and a pipeline are protected. The water of the user pipe network flows back to the water supply pipe 6, the fluid flows from the water supply pipe 6 to the rear runner through the outlet of the rear runner of the second water hammer arrestor 16, and flows rapidly in the rear runner, when the fluid flows to the inlet of the rear runner, the end of the shell 71 is severely impacted to reduce the speed of the fluid, and the fluid flows into the front runner after changing the direction through the flow passing port 76, so that the speed of the water flow is reduced, the impact effect of the water hammer is relieved, and the water supply pipe 6 is protected.
The embodiments of the present invention are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the content of the claims of the present invention should be regarded as the technical scope of the present invention.
Claims (10)
1. A non-negative pressure water supply device with a water hammer protection function is characterized by comprising a water inlet pipe (1), a steady flow tank (4), a water pump water inlet main pipe (15), a variable frequency water pump unit, a water pump water outlet main pipe (10) and a water supply pipe (6) which are sequentially connected, wherein a first water hammer eliminator (7) is arranged between the steady flow tank (4) and the water pump water inlet main pipe (15); the first water hammer eliminator (7) comprises a shell (71), a water inlet pipe (72) and a water outlet pipe (73), the water inlet pipe (72) is connected with the steady flow tank (4), and the water outlet pipe (73) is connected with the variable frequency water pump unit; a partition plate (74) is horizontally arranged in the shell (71), the partition plate (74) divides the shell (71) into a front flow passage and a rear flow passage, and the front flow passage and the rear flow passage are communicated through a flow passing port (76); the water inlet pipe (72) is communicated with the inlet of the front flow channel, and the water outlet pipe (73) is communicated with the outlet of the rear flow channel; and a pressure reduction pore plate (75) is arranged at the inlet of the rear flow channel.
2. The non-negative pressure water supply equipment according to claim 1, wherein the diameter of the shell (71) is 1.8-2.2 times of the diameter of the water inlet pipe (72).
3. The non-negative pressure water supply equipment according to claim 1, wherein the area of the through hole of the pressure reducing pore plate (75) is 1.1-1.2 times or more of the sectional area of the water inlet pipe (72).
4. Non-negative pressure water supply equipment according to claim 1, characterized in that a second water hammer arrestor (16) is arranged between the water pump outlet manifold (10) and the water supply pipe (6).
5. The non-negative pressure water supply equipment according to claim 1, wherein a through pipeline is connected between the water pump water inlet header pipe (15) and the water pump water outlet header pipe (10), and the through pipeline is connected with the variable frequency water pump unit in parallel; the straight-through pipeline is provided with a first check valve and a first butterfly valve, an energy storage device (8) is arranged between the first check valve and the first butterfly valve, and an air bag filled with gas is arranged in the energy storage device (8).
6. Non-negative pressure water supply equipment according to claim 1, characterized in that the steady flow tank (4) is provided with a vacuum suppressor (3).
7. The non-negative pressure water supply equipment according to claim 1, wherein the variable frequency water pump unit comprises a water pipe, and a second butterfly valve (14), a variable frequency water pump (13), a second check valve (12) and a third butterfly valve (11) which are arranged on the water pipe in sequence.
8. The non-negative-pressure water supply equipment according to claim 1, wherein the frequency conversion water pump units are 2-3 groups, and are arranged between the water pump water inlet header pipe (15) and the water pump water outlet header pipe (10) in parallel.
9. Non-negative pressure water supply equipment according to claim 1, characterized in that the water supply pipe (1) is provided with a first pressure sensor (2).
10. The non-negative pressure water supply equipment according to claim 1, characterized in that the water pump outlet manifold (10) is provided with a second pressure sensor (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121254573.9U CN215211264U (en) | 2021-06-03 | 2021-06-03 | Non-negative pressure water supply equipment with water hammer protection function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121254573.9U CN215211264U (en) | 2021-06-03 | 2021-06-03 | Non-negative pressure water supply equipment with water hammer protection function |
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| CN215211264U true CN215211264U (en) | 2021-12-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116290220A (en) * | 2023-04-11 | 2023-06-23 | 蓝深集团股份有限公司 | Non-negative pressure water supply equipment with vibration reduction function |
| CN116397725A (en) * | 2023-04-11 | 2023-07-07 | 蓝深集团股份有限公司 | Non-negative pressure water supply method with vibration reduction function |
-
2021
- 2021-06-03 CN CN202121254573.9U patent/CN215211264U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116290220A (en) * | 2023-04-11 | 2023-06-23 | 蓝深集团股份有限公司 | Non-negative pressure water supply equipment with vibration reduction function |
| CN116397725A (en) * | 2023-04-11 | 2023-07-07 | 蓝深集团股份有限公司 | Non-negative pressure water supply method with vibration reduction function |
| CN116290220B (en) * | 2023-04-11 | 2023-10-24 | 蓝深集团股份有限公司 | Non-negative pressure water supply equipment with vibration reduction function |
| CN116397725B (en) * | 2023-04-11 | 2024-01-23 | 蓝深集团股份有限公司 | Non-negative pressure water supply method with vibration reduction function |
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