CN111395447A - Box type water supply system - Google Patents
Box type water supply system Download PDFInfo
- Publication number
- CN111395447A CN111395447A CN202010357373.XA CN202010357373A CN111395447A CN 111395447 A CN111395447 A CN 111395447A CN 202010357373 A CN202010357373 A CN 202010357373A CN 111395447 A CN111395447 A CN 111395447A
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- water
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- water pump
- tank
- inlet
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 310
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 230000001276 controlling effect Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000009837 dry grinding Methods 0.000 abstract description 6
- 230000014759 maintenance of location Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/02—Methods or layout of installations for water supply for public or like main supply for industrial use
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
- E03B11/10—Arrangements or adaptations of tanks for water supply for public or like main water supply
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B5/00—Use of pumping plants or installations; Layouts thereof
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/075—Arrangement of devices for control of pressure or flow rate
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structural Engineering (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a box-type water supply system, comprising: the water supply system comprises a water tank water inlet pipe, a tank body, a water pump water inlet pipe, a water supply pipe, a data collector and a controller; the box body comprises a water tank and a pump room, and the water tank is provided with a pit and a liquid level meter; a water pump is arranged in the pump room and is provided with a water pump inlet and a water pump outlet; one end of the water inlet pipe of the water pump is positioned at the pit position, the other end of the water inlet pipe of the water pump is connected with the inlet of the water pump, and the outlet of the water pump is connected with the water supply pipe; a water tank inlet regulating valve and an inlet flowmeter are arranged on the water tank inlet pipe, a water tank outlet flowmeter and a water tank outlet regulating valve are arranged on the water pump inlet pipe, and a stop valve and a pressure sensor are arranged on the water supply pipe; the data acquisition unit is used for acquiring various data signals; the controller is used for controlling the related components. The invention improves the utilization rate of the effective volume of the water tank, can also prevent the mechanical seal of the water pump from being damaged due to dry grinding, and prolongs the service life of the water pump.
Description
Technical Field
The invention relates to the technical field of drainage, in particular to a box type water supply system.
Background
With the acceleration of the urbanization process, the use amount of the box-type water supply system is larger and larger in order to ensure the water supply safety. There are also problems with the existing tank water supply systems, such as low effective volume utilization (ratio of available volume to tank volume of the tank); the water in the water tank can not be completely discharged out of the tank body, so that the water quality is deteriorated; the retention time of water in the water tank is not controlled, and water exists in the water tank for a long time under partial conditions, so that the water quality is deteriorated, the water quality standard requirements are not met, and even a 'dead water' phenomenon occurs; the box-type water supply system also has the problems that the mechanical seal of the water pump is damaged due to dry grinding and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a box type water supply system, which not only improves the effective volume utilization rate of a water tank and accelerates water circulation, but also can prevent the mechanical seal of a water pump from being damaged due to dry grinding, and prolongs the service life of the water pump.
The technical scheme adopted by the invention for solving the technical problems is as follows: there is provided a tank type water supply system comprising: the water supply system comprises a water tank water inlet pipe, a tank body, a water pump water inlet pipe, a water supply pipe, a data collector and a controller;
the box body comprises a water tank and a pump room, a pit is formed in the bottom of the water tank, and a liquid level meter is arranged inside the water tank; a water pump is arranged in the pump room and is provided with a water pump inlet and a water pump outlet; one end of the water inlet pipe of the water pump is positioned at the position of the pit, and the other end of the water inlet pipe of the water pump is connected with the inlet of the water pump; the outlet of the water pump is connected with the water supply pipe; a water tank inlet regulating valve and an inlet flowmeter are arranged on the water tank inlet pipe, a water tank outlet flowmeter and a water tank outlet regulating valve are arranged on the water pump inlet pipe, and a stop valve and a pressure sensor are arranged on the water supply pipe;
the data collector is used for collecting data signals of the water tank inlet regulating valve, the water tank outlet regulating valve, the inlet flowmeter, the water tank outlet flowmeter, the liquid level meter, the pressure sensor and the water pump; the controller is used for controlling the opening ranges of the water tank inlet regulating valve and the water tank outlet regulating valve and controlling the rotating speed of the water pump.
The water pump includes water pump urceolus, pump head, pump shaft and motor, the opening position of water pump urceolus is arranged in to the pump head is in order to form the water pump cavity, the motor passes through coupling joint and control the pump shaft, the pump shaft passes the pump head extends to inside the water pump cavity, the pump shaft is in the inside of water pump cavity is provided with the impeller, the pump shaft with mechanical seal is installed to the junction of pump head, is used for sealing pump shaft and pump head.
The controller compares the pressure signal acquired by the pressure sensor with a preset pressure value through the data acquisition unit to adjust the rotating speed of the motor, and if the acquired pressure signal is greater than the preset pressure value, the rotating speed of the motor is reduced; and if the acquired pressure signal is smaller than a preset pressure value, increasing the rotating speed of the motor.
The water pump inlet and the water pump outlet are of a high-low structure, the water pump inlet is arranged in the middle of one side of the water pump outer barrel, and the water pump outlet is arranged at the top of the other side of the water pump outer barrel.
The lowest point position of the water pump inlet is higher than the highest point position of the impeller.
The impeller is a two-stage impeller.
The water pump is a frequency conversion multistage centrifugal pump, and a check valve is arranged in the outlet of the water pump.
And the water in the water tank is completely circulated and discharged from the water supply pipe within a preset water circulation time t, and the expression is satisfied:
Q2＝(S×H)/t+Q1
wherein Q is1Is the inlet flow rate, Q, of the inlet flowmeter2The water outlet flow of the water tank outlet flowmeter is shown, H is the liquid level height measured by the liquid level meter, and S is the bottom area of the water tank.
A drain valve is arranged at the lower point of the pit, and the pit is lower than the bottom plane of the water tank.
The water tank is characterized in that an overflow pipe is arranged at the top of the water tank and is of an inverted U-shaped structure, the overflow pipe is higher than the top plane of the water tank, and a filter is arranged at the tail end of the overflow pipe.
Advantageous effects
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects: according to the invention, the pit arranged at the bottom of the water tank body and the overflow pipe arranged at the top of the water tank body enable water in the water tank to fill the whole water tank and enable water to be completely discharged from the water tank, so that the effective volume utilization rate of the water tank is improved; the circulation of water in the water tank is controlled in real time through the controller, so that the retention time of the water in the water tank is less than a set value, and the water quality requirement is ensured; in addition, the lowest point of the water pump inlet is at least higher than the highest point of the impeller, so that under the condition of water shortage of the water cleaning water tank or the water tank, part of water always exists in the water pump, the water pump has a self-absorption function, after the water tank is cleaned, the damage caused by dry grinding of mechanical seal of the water pump can be effectively prevented under the condition that the water pump is not exhausted and is started by mistake or exhausted insufficiently, the service life of the water pump is prolonged, and the water pump has better practicability.
Drawings
FIG. 1 is a schematic view of a tank-type water supply system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a water pump according to an embodiment of the present invention.
The figure is as follows: 1. water tank inlet tube, 2, water tank inlet governing valve, 3, inlet flowmeter, 4, level gauge, 5, the box, 6, water pump inlet tube, 7, water tank outlet flowmeter, 8, water tank outlet governing valve, 9, the water pump, 10, the stop valve, 11, pressure sensor, 12, the feed pipe, 13, the pit, 14, the blowoff valve, 15, the overflow pipe, 16, the filter, 17, data collector, 18, the controller, 51, the water tank, 52, the pump house, 90, the water pump import, 91, the water pump urceolus, 92, the impeller, 93, the water pump cavity, 94, the pump head, 95, the pump shaft, 96, mechanical seal, 97, the shaft coupling, 98, the motor, 99 water pump export.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The embodiment of the invention relates to a box type water supply system, as shown in fig. 1, which is a schematic diagram of the box type water supply system of the embodiment of the invention, and comprises the following components: the device comprises a water tank inlet pipe 1, a water tank inlet regulating valve 2, an inlet flowmeter 3, a liquid level meter 4, a tank body 5, a water pump inlet pipe 6, a water tank outlet flowmeter 7, a water tank outlet regulating valve 8, a water pump 9, a stop valve 10, a pressure sensor 11, a water supply pipe 12, a pit 13, a blow-down valve 14, an overflow pipe 15, a filter 16, a data acquisition unit 17 and a controller 18.
In the present embodiment, the box body 5 is a rectangular parallelepiped structure, the box body 5 includes a water tank 51 and a pump room 52, and the water tank 51 and the pump room 52 are integrated into a whole; the water tank inlet pipe 1 is provided with a water tank inlet regulating valve 2 and an inlet flowmeter 3; a water tank outlet flowmeter 7 and a water tank outlet regulating valve 8 are arranged on the water pump inlet pipe 6; a liquid level meter 4 is arranged inside the water tank 51; the water pump 9 is accommodated in the pump room 52, and a check valve is arranged in the outlet of the water pump 9; the water tank 51 is also internally provided with a pit 13 and an overflow pipe 15, the bottom of the pit 13 is provided with a blowoff valve 14, the pit 13 is lower than the bottom plane of the tank body 5, and the overflow pipe 15 is higher than the top plane of the tank body 5.
In this embodiment, the overflow pipe 15 adopts an inverted U-shaped structure, and the end of the overflow pipe 15 is provided with a filter 16, which can prevent solid particles, rain water or small insects in the air from entering the water tank and causing secondary pollution.
Further, the blowoff valve 14 is arranged at the bottom of the pit 13, so that the sewage can be discharged through the blowoff valve 14 after the water tank 51 is cleaned.
Further, the data collector 17 and the controller 18 are integrated into a whole; the data collector 17 is used for collecting opening signals of the water tank inlet regulating valve 2 and the water tank outlet regulating valve 8, and the data collector 17 can also collect flow signals of the inlet flowmeter 3 and the water tank outlet flowmeter 7, liquid level signals of the liquid level meter 4, pressure signals of the pressure sensor 11 and rotating speed signals of the water pump 9; the controller 18 is used for sending control signals to control the opening degree signals of the water tank inlet regulating valve 2 and the water tank outlet regulating valve 8, and the controller 18 can also control the rotating speed of the water pump 9.
As shown in fig. 2, which is a schematic structural diagram of a water pump according to an embodiment of the present invention, the water pump 9 includes: the pump comprises a water pump inlet 90, a water pump outer cylinder 91, an impeller 92, a water pump cavity 93, a pump head 94, a pump shaft 95, a mechanical seal 96, a coupler 97, a motor 98 and a water pump outlet 99.
Further, the design mode of the water pump inlet 90 and the water pump outlet 99 of the water pump 9 is a high-low structure, the water pump inlet 90 is arranged in the middle of one side of the water pump outer cylinder 91, and the water pump outlet 99 is arranged at the top of the other side 91 of the water pump outer cylinder.
Further, the lowest point position of the water pump inlet 90 of the water pump 9 is at least higher than the highest point position of the impeller 92; under the condition of water shortage of the cleaning water tank or the water tank, part of water can be always stored in the water pump, so that the water pump has a self-suction function, after the water tank is cleaned, the mechanical seal dry grinding of the water pump can be effectively prevented from damaging under the condition that the water pump is not started by mistake or exhausted insufficiently, and the service life of the water pump is prolonged.
Furthermore, a water supply pipe 12 of the water pump 9 is provided with a stop valve 10 and a pressure sensor 11.
Further, the water pump 9 is a variable-frequency multistage centrifugal pump.
In this embodiment, the water inlet pipe 6 of the water pump is communicated with the pit 13 of the water tank 51, water enters an annular space formed by the water pump outer cylinder 91 and the water pump cavity 93 through the water pump inlet 90 from the water inlet pipe 6 of the water pump, and the mechanical seal 96 is used for sealing the rotating part pump shaft 95 and the fixed part pump head 94. According to the water demand of the demand end of the water supply system, the controller 18 compares the pressure signal of the pressure sensor 11 acquired by the data acquisition unit 17 with a preset pressure value to adjust the rotating speed of the motor 98, so as to ensure that the water supply pressure is within the allowable error range of the set pressure, the motor 98 transmits the torque to the pump shaft 95 through the coupler 97, the pump shaft 95 drives the impeller 92 to rotate, the impeller 92 transmits the kinetic energy to the water, the potential energy of the water is increased, the pressure is increased, and the kinetic energy is finally transmitted into the water supply pipe 12 from the water pump outlet 99 through the water pump cavity 93 to supply water to a user.
Further, when the rotation speed of the motor 98 is adjusted, if the acquired pressure signal is greater than a preset pressure value, the rotation speed of the motor 98 is reduced; if the collected pressure signal is smaller than the preset pressure value, the rotation speed of the motor 98 is increased.
In this embodiment, the controller 18 controls the opening degrees of the tank inlet regulating valve 2 and the tank outlet regulating valve 8 so that the retention time of the water in the tank does not exceed a preset value, and if the water in the tank 51 is completely circulated and discharged from the water supply pipe 12 within a preset time t, the following expression is required to be satisfied:
Q2＝(S×H)/t+Q1
wherein t is a preset water circulation time, Q1Is the inlet flow rate, Q, of the inlet flowmeter 32The water flow rate of the water tank outlet flowmeter 7, H is the liquid level height measured by the liquid level meter 4, and S is the bottom area of the water tank 51. The water circulation time t is preset, and different water circulation times t can be set according to different source water qualities to meet the water quality requirements.
Therefore, the design of the pits and the overflow pipe can effectively ensure that water in the water tank can be completely discharged, the effective volume utilization rate of the water tank is improved, meanwhile, the retention time of the water in the water tank can be ensured to be smaller than a set value, the water quality requirement is ensured, in addition, the design mode that the position of the lowest point of the water pump inlet is at least higher than the position of the highest point of the two-stage impeller is adopted, under the condition that the water tank is cleaned or the water tank is lack of water, partial water is always stored in the water pump, the water pump has a self-suction function, the damage caused by mechanical seal dry grinding of the water pump is prevented.
Claims (10)
1. A tank feed water system, comprising: the water tank comprises a water inlet pipe (1) of a water tank, a tank body (5), a water inlet pipe (6) of a water pump, a water supply pipe (12), a data acquisition unit (17) and a controller (18);
the box body (5) comprises a water tank (51) and a pump room (52), a pit (13) is formed in the bottom of the water tank (51), and a liquid level meter (4) is arranged in the water tank (51); a water pump (9) is arranged in the pump room (52), and a water pump inlet (90) and a water pump outlet (99) are formed in the water pump (9); one end of the water inlet pipe (6) of the water pump is positioned at the position of the pit (13), and the other end of the water inlet pipe of the water pump is connected with the water inlet (90) of the water pump; the outlet (99) of the water pump is connected with the water supply pipe (12); a water tank inlet regulating valve (2) and an inlet flow meter (3) are arranged on the water tank inlet pipe (1), a water tank outlet flow meter (7) and a water tank outlet regulating valve (8) are arranged on the water pump inlet pipe (6), and a stop valve (10) and a pressure sensor (11) are arranged on the water supply pipe (12);
the data acquisition unit (17) is used for acquiring data signals of the water tank inlet adjusting valve (2), the water tank outlet adjusting valve (8), the inlet flowmeter (3), the water tank outlet flowmeter (7), the liquid level meter (4), the pressure sensor (11) and the water pump (9); the controller (18) is used for controlling the opening ranges of the water tank inlet adjusting valve (2) and the water tank outlet adjusting valve (8) and controlling the rotating speed of the water pump (9).
2. The box type water supply system according to claim 1, characterized in that the water pump (9) comprises a water pump outer cylinder (91), a pump head (94), a pump shaft (95) and a motor (98), the pump head (94) is arranged at an opening position of the water pump outer cylinder (91) to form a water pump cavity (93), the motor (98) is connected with and controls the pump shaft (95) through a coupler (97), the pump shaft (95) penetrates through the pump head (94) and extends into the water pump cavity (93), the pump shaft (95) is provided with an impeller (92) inside the water pump cavity (93), and a mechanical seal (96) is installed at the connection position of the pump shaft (95) and the pump head (94) for sealing the pump shaft (95) and the pump head (94).
3. The tank type water supply system according to claim 2, wherein the controller (18) adjusts the rotation speed of the motor (98) by comparing the pressure signal collected by the pressure sensor (11) with a preset pressure value through the data collector (17), and reduces the rotation speed of the motor (98) if the collected pressure signal is greater than the preset pressure value; and if the acquired pressure signal is smaller than a preset pressure value, increasing the rotating speed of the motor (98).
4. The box-type water supply system according to claim 2, characterized in that the water pump inlet (90) and the water pump outlet (99) are of a high-low structure, the water pump inlet (90) is arranged at the middle position of one side of the water pump outer cylinder (91), and the water pump outlet (99) is arranged at the top of the other side of the water pump outer cylinder (91).
5. The box watering system according to claim 2, wherein the lowest point of the pump inlet (90) is higher than the highest point of the impeller (92).
6. The box water supply system according to claim 2, wherein the impeller (92) is a two-stage impeller.
7. The tank feedwater system of claim 1, characterized in that the water pump (9) is a variable frequency multistage centrifugal pump, with a check valve built into the pump outlet (99).
8. The tank watering system according to claim 1, characterised in that the water in the tank (51) is discharged from the watering pipe (12) for a total circulation within a preset water circulation time t, satisfying the expression:
Q2＝(S×H)/t+Q1
wherein Q is1Is the inflow rate, Q, of the inlet flowmeter (3)2The water outlet flow of the water tank outlet flowmeter (7), H is the liquid level height measured by the liquid level meter (4), and S is the bottom area of the water tank (51).
9. The box water supply system according to claim 1, characterized in that the low point of the pit (13) is provided with a blow-off valve (14), the pit (13) being below the bottom plane of the tank (51).
10. The box-type water supply system according to claim 1, characterized in that an overflow pipe (15) is arranged at the top of the water tank (51), the overflow pipe (15) is of an inverted U-shaped structure, the overflow pipe (15) is higher than the top plane of the water tank (51), and a filter (16) is arranged at the end of the overflow pipe (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357373.XA CN111395447A (en) | 2020-04-29 | 2020-04-29 | Box type water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357373.XA CN111395447A (en) | 2020-04-29 | 2020-04-29 | Box type water supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111395447A true CN111395447A (en) | 2020-07-10 |
Family
ID=71433849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010357373.XA Withdrawn CN111395447A (en) | 2020-04-29 | 2020-04-29 | Box type water supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111395447A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112194094A (en) * | 2020-09-03 | 2021-01-08 | 珠海格力电器股份有限公司 | Water inlet control system with probe for water tank full of water |
-
2020
- 2020-04-29 CN CN202010357373.XA patent/CN111395447A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112194094A (en) * | 2020-09-03 | 2021-01-08 | 珠海格力电器股份有限公司 | Water inlet control system with probe for water tank full of water |
| CN112194094B (en) * | 2020-09-03 | 2021-11-05 | 珠海格力电器股份有限公司 | Water inlet control system with probe for water tank full of water |
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Application publication date: 20200710 |