CN215562955U - Numerical control pressure-superposed compensation type integrated non-negative pressure water supply equipment - Google Patents
Numerical control pressure-superposed compensation type integrated non-negative pressure water supply equipment Download PDFInfo
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- CN215562955U CN215562955U CN202122008195.2U CN202122008195U CN215562955U CN 215562955 U CN215562955 U CN 215562955U CN 202122008195 U CN202122008195 U CN 202122008195U CN 215562955 U CN215562955 U CN 215562955U
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Abstract
The utility model relates to the technical field of water supply equipment, and discloses numerical control overlying compensation type integrated non-negative pressure water supply equipment which comprises a tank body, wherein a water inlet collecting pipe is connected onto the tank body, a low-region water supply pump set and a middle-region water supply pump set are communicated with the water inlet collecting pipe in parallel, one ends, far away from the water inlet collecting pipe, of the low-region water supply pump set and the middle-region water supply pump set are connected with a low-region water outlet pipe, and the low-region water outlet pipe is connected with a high-region water supply mechanism. According to the water supply equipment, the control system is integrally integrated on the equipment, so that the real integrated non-negative-pressure water supply equipment which can be used for laminating and automatically and quickly compensating the municipal pipe network pressure is realized, and the wiring and lapping cost of the control equipment is reduced; the limit value of the negative pressure can be adjusted and eliminated according to the actual production requirement, the negative pressure generated by the steady flow tank of the water supply equipment in the actual production is quantitatively eliminated, and the damage of the water supply equipment is effectively prevented.
Description
Technical Field
The utility model relates to the technical field of water supply equipment, in particular to numerical control pressure-superposed compensation type integrated non-negative pressure water supply equipment.
Background
The existing water supply equipment is a whole, and the equipment control cabinet is a single whole. The water supply system is mainly conveyed to a user area through a municipal water supply network, and then is supplied to each water consumption point after being secondarily pressurized by a pressurizing pump after passing through a flow stabilizing tank. However, in the face of areas with different heights, more than 3 sets of equipment are often adopted to work independently and do not interfere with each other, and the non-negative-pressure water supply equipment has some problems:
1) the equipment and the control are two independent bodies, so that the floor area is large, the wiring of the control equipment is complex and long in time, and more materials are used and the cost is high;
2) the existing equipment is provided with a plurality of sets of secondary pressurizing equipment for water areas with different heights, so that the occupied area is large, and the equipment cost is high;
3) a plurality of sets of equipment are long in maintenance time, low in efficiency and waste in resources;
4) when the water pressure of the municipal water supply network is insufficient, the water quantity in the steady flow tank is less, so that the water pump is difficult to quickly and effectively compensate, the working pressure of the water pump is increased, and the water supply efficiency of water supply equipment is reduced;
5) when the municipal water supply network supplies insufficient water, the outside air can be always communicated with the steady flow tank, and the secondary pollution of water quality is easily caused.
Based on this kind of problem of no negative pressure water supply equipment, this kind of numerical control is folded and is pressed compensation formula integration no negative pressure water supply equipment and turn into the first choice of solving reality problem, and this equipment has the significance to the water supply efficiency that improves municipal water supply network.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a numerical control pressure-superposed compensation type integrated non-negative pressure water supply device to solve the problems in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a no negative pressure water supply equipment of compensation formula integration is folded in numerical control, includes a jar body, the jar is connected with into water collection house on physically, and it has low district water supply pump package and centre district water supply pump package to connect in parallel on the collection house to intake, the one end that low district water supply pump package and centre district water supply pump package kept away from into water collection house is connected with the low district outlet pipe, and the low district water supply pipe connection has high district water supply mechanism.
As a further scheme of the utility model: the high-region water supply mechanism comprises a high-region water supply pump and a pressure-superposed pump set which are communicated in parallel, and one end of the high-region water supply pump and one end of the pressure-superposed pump set, which are far away from the low-region water outlet pipe, are connected with a high-region water outlet pipe.
As a further scheme of the utility model: and the high-region water outlet pipe and the low-region water outlet pipe are both provided with a pressure monitoring device and a pressure protection device.
As a further scheme of the utility model: and the front wall of the tank body is respectively provided with a water inlet, a pressure monitoring device and an electromagnetic valve.
As a further scheme of the utility model: and air pressure tanks are also arranged on the high-region water outlet pipe and the low-region water outlet pipe.
As a still further scheme of the utility model: a control system is also included.
Compared with the prior art, the utility model has the beneficial effects that:
1) the water supply equipment integrates the control system on the equipment to realize real integrated non-negative pressure water supply equipment which can be overlapped and automatically and quickly compensate the municipal pipe network pressure, and reduces the wiring and overlapping cost of the control equipment;
2) the principle that a water pump is connected in series to raise the lift is adopted, a superposed pump set is connected in series at the outlet of a water supply pump set in a low region, water pumped out of the low region is superposed again to raise the lift to meet the water supply requirement of a high region, the equipment is provided with a pressure sensing and monitoring system for the low region, the middle region and the high region independently, different pressure preset values can be set for different water areas to meet the water requirement of each region, and through the pressure actual feedback value of each water area, the system carries out automatic analysis and adjusts the working state of the equipment to meet the water requirement of each water area. One set of pressure-superposed equipment can replace 3 sets of traditional low, high and ultrahigh area equipment, and the construction cost of the pump house with the occupied area of the equipment is greatly reduced. The maintenance cost of the equipment is reduced, the utilization rate of the equipment is improved, and the resource waste is reduced;
3) The pressure sensor is used for controlling the connection and the disconnection of the electromagnetic valve, so that the stable flow tank is always kept in a closed state when the liquid level in the tank drops. The municipal water pressure is quickly and automatically compensated by using the pressure of the gas medium in the flow stabilizing tank, so that the working pressure of the water pump unit is reduced, and the water supply efficiency of the municipal water supply network is improved;
4) the limit value of the negative pressure can be adjusted and eliminated according to the actual production requirement, the negative pressure generated by the steady flow tank of the water supply equipment in the actual production is quantitatively eliminated, and the damage of the water supply equipment is effectively prevented.
Drawings
Fig. 1 is a schematic structural diagram of a numerical control pressure-superposed compensation type integrated non-negative pressure water supply device.
In the figure: 1. a tank body; 2. a water inlet; 3. a water inlet manifold; 4. an electromagnetic valve; 5. a low-region water supply pump set; 6. an air pressure tank; 7. a pressure monitoring device; 8. a middle area water supply pump group; 9. laminating a pump set; 10. a pressure protection device; 11. a high region water outlet pipe; 12. a high-region water supply pump; 13. and a water outlet pipe in the lower area.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the utility model, and further, the terms "first", "second", etc., are used only for descriptive purposes and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated, whereby the features defined as "first", "second", etc., may explicitly or implicitly include one or more of such features, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, and the two elements may be communicated with each other, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, in the embodiment of the utility model, the numerical control overlying compensation type integrated non-negative pressure water supply equipment comprises a tank body 1, wherein a water inlet collecting pipe 3 is connected to the tank body 1, a low-region water supply pump group 5 and a middle-region water supply pump group 8 are connected to the water inlet collecting pipe 3 in parallel, one ends, far away from the water inlet collecting pipe 3, of the low-region water supply pump group 5 and the middle-region water supply pump group 8 are connected with a low-region water outlet pipe 13, the low-region water outlet pipe 13 is connected with a high-region water supply mechanism, the water supply equipment integrates a control system integrally to the equipment to realize real integration, the floor area of the equipment is greatly reduced, and the wiring and overlapping cost of the equipment and the construction cost of a pump room are reduced. The water supply equipment adopts the pressure-superposed mode, can replace 3 sets of traditional low, high and ultrahigh areas according to different water use pressures in different areas, and greatly reduces the equipment floor area, equipment and pump house construction cost. The system state quickly adjusts the water supply pressure, realizes full automation, unattended operation, constant water pressure, self-protection and treatment of equipment faults, accumulation of working time and complete pressure monitoring control, and effectively and quickly compensates the pressure deficiency generated by the municipal water supply network, eliminates the negative pressure generated in the steady flow tank of the water supply equipment and protects the water supply equipment.
The high-region water supply mechanism comprises a high-region water supply pump 12 and a pressure-superposed pump set 9 which are communicated in parallel, and one end of the high-region water supply pump 12 and one end of the pressure-superposed pump set 9, which are far away from the low-region water outlet pipe 13, are connected with a high-region water outlet pipe 11.
And the high-region water outlet pipe 11 and the low-region water outlet pipe 13 are both provided with a pressure monitoring device 7 and a pressure protection device 10.
The water inlet 2, the pressure monitoring device 7 and the electromagnetic valve 4 are respectively arranged on the front wall of the tank body 1.
And the high-region water outlet pipe 11 and the low-region water outlet pipe 13 are also provided with an air pressure tank 6.
A control system is also included.
The working principle of the utility model is as follows: the equipment is pressure sensing and monitoring system for low and medium height district individual configuration, can set up different pressure default values for different water areas and satisfy the water demand in each district, and through the actual feedback value of the pressure in each water area, the system carries out automatic analysis and adjusts equipment operating condition and satisfies the water demand in each water area.
1) When the actual feedback value of the pressure sensor at the user end of the low area is smaller than the preset value, the pump set 1# in the low area is started in a delayed mode to pressurize the user end to the preset value pressure, and when the actual pressure value of the user end is larger than the preset value pressure and the pressure of the user end is stable, the pump set stops pressurizing in a delayed mode. When the water consumption peak of the low region is reached, the actual feedback value of the pressure of the user side is lower than the preset pressure lower limit value, the frequency converter outputs full load and the pumping time is reached, the pump set of the low region is used for delaying the pumping logic, the pump set of the low region 2# is started for pressurization to meet the requirement of the water consumption peak, and when the outlet pressure of the user side is greater than the upper pressure limit and the pumping time is reached, the pump set of the low region is used for delaying the pumping logic. When the water is used at a small flow rate at night, the pressure of the user side is greater than the preset awakening pressure of the water pump, the running frequency of the frequency converter is less than the dormancy frequency, the dormancy time is up, and the water pump can enter the dormancy program. The outlet pressure stabilizing tank has a small-flow pressure maintaining function, so that the phenomenon that the water pump is repeatedly awakened by small-flow water to cause energy waste is avoided. When the pressure of the user end is smaller than the awakening pressure, the water pump can be awakened to enter a working state.
2) When the actual feedback value of the pressure sensor at the user end in the high area is smaller than the preset value, the pump set 1# in the high area is started in a delayed mode to pressurize the user end to the preset value pressure, and when the actual pressure value of the user end is larger than the preset value pressure and the pressure of the user end is stable, the pump set stops pressurizing in a delayed mode. When the water consumption peak of the high area is reached, the actual feedback value of the pressure of the user side is lower than the preset pressure lower limit value, the frequency converter outputs full load and the pumping time is reached, the pump set of the high area performs the delayed pumping logic, the pressure-superposed pump of the high area starts to pressurize, and the pump set of the low area automatically adjusts the working state of the pump set according to the actual feedback value of the pressure of the user side, so that the water consumption peak demand is met. And when the outlet pressure of the user side is greater than the upper pressure limit and the pump reducing time is up, the high-region pressure-superposed pump set performs the logic of delaying pump reduction. When the water is used at a small flow rate at night, the pressure of the user side is greater than the preset awakening pressure of the water pump, the running frequency of the frequency converter is less than the dormancy frequency, the dormancy time is up, and the water pump can enter the dormancy program. The outlet pressure stabilizing tank has a small-flow pressure maintaining function, so that the phenomenon that the water pump is repeatedly awakened by small-flow water to cause energy waste is avoided. When the pressure of the user end is smaller than the awakening pressure, the water pump can be awakened to enter a working state.
3) When the actual feedback value of the super-high area user end pressure sensor is smaller than the preset value, the super-high area pump set 2# is started in a delayed mode to pressurize the user end to the preset value pressure, and when the actual pressure value of the user end is larger than the preset value pressure and the user end pressure is stable, the pump set stops pressurizing in a delayed mode. When the water consumption peak of the ultra-high area is reached, the actual feedback value of the pressure of the user side is lower than the lower limit value of the preset pressure, the frequency converter outputs full load and the pumping time is reached, the pump set of the ultra-high area is used for carrying out delay pumping logic, the overlying pump of the ultra-high area is started and pressurized to meet the requirement of the water consumption peak, and when the outlet pressure of the user side is greater than the upper limit pressure and the pumping time is reached, the overlying pump set of the ultra-high area is used for carrying out delay pumping logic. When the water is used at a small flow rate at night, the pressure of the user side is greater than the preset awakening pressure of the water pump, the running frequency of the frequency converter is less than the dormancy frequency, the dormancy time is up, and the water pump can enter the dormancy program. The outlet pressure stabilizing tank has a small-flow pressure maintaining function, so that the phenomenon that the water pump is repeatedly awakened by small-flow water to cause energy waste is avoided. When the pressure of the user end is smaller than the awakening pressure, the water pump can be awakened to enter a working state.
4) The equipment shutdown protection mainly comprises negative pressure shutdown protection, waterless shutdown protection of a water tank, flooding shutdown protection, overpressure shutdown protection and pipe explosion shutdown protection.
4.1) negative pressure protection: when the municipal pressure is lower than the negative pressure lower limit value, the equipment is shut down and alarms; and when the municipal pressure recovery is greater than the negative pressure release value, the equipment is started to operate.
4.2) water-free protection: when the liquid level of the tank body is lower than the ultra-low liquid level, the equipment is shut down to alarm. The liquid level of the tank body is recovered to be larger than the starting operation of the equipment.
4.3) flooding alarm: when the liquid level relay detects a flooding alarm signal, the equipment is stopped to alarm, and the inlet and outlet electric valves can be closed. And (5) manually resetting.
4.4) overpressure protection: and when the outlet pressure exceeds the upper limit value set by the pressure switch, the equipment is stopped to alarm. The device automatically operates below the wake-up pressure recovery.
4.5) protecting the explosion: the system detects that the number of the water pumps which are put into operation exceeds the designed system flow, the outlet pressure can not meet the set value at all, and the equipment is shut down to give an alarm. And (5) manually resetting.
1) When municipal water supply network pressure was sufficient, stationary flow jar solenoid valve was closed, and the stationary flow jar plays pressurize and steady voltage's effect to municipal pipe network incoming water, utilizes municipal water supply network self's pressure to deliver to the water point with water, accomplishes the water supply. In the whole water supply process, the water pump unit is not started, so that the waste of useless work done by energy is avoided;
2) When municipal water supply network pressure is not enough, the solenoid valve is closed, and the stationary flow jar plays the effect of pressurize and steady voltage to municipal pipe network incoming water, and water pump unit comes water to fold to press the processing in the stationary flow jar, sends water to the water consumption point, accomplishes the water supply process. In the whole water supply process, the original pressure of the municipal water supply network can be utilized to a greater extent, and the working pressure of the water pump unit is reduced;
3) when the water supply quantity of the municipal water supply network is insufficient in a water consumption peak area, the flow stabilizing tank performs difference compensation. The electromagnetic valve is closed, so that the steady flow tank is always kept in a closed state when the liquid level in the tank descends. And the pressure of the gas medium in the flow stabilizing tank is utilized to carry out rapid automatic compensation. Reducing the working pressure of the water pump unit;
4) when the water supply quantity of the municipal water supply network is seriously insufficient or the water supply is stopped, the pressure in the flow stabilizing tank is gradually reduced. When the pressure in the flow stabilizing tank is reduced to a certain value, the pressure sensor sends an electric signal to open the electromagnetic valve, so that the negative pressure generated in the water supply system is quantitatively eliminated. Avoid no negative pressure water supply equipment to damage, effectively protect municipal water supply network. The steady flow tank pressure sensor monitors the change of the pressure in the tank at any time and sends out signals, and a part of gas medium in the tank is always kept by controlling the opening and closing of the electromagnetic valve. When the water supply equipment is in failure or is abnormal and the water supply system generates an overpressure phenomenon or a water hammer phenomenon, the gas medium can effectively weaken the water pressure impact generated by the overpressure phenomenon or the water hammer phenomenon to a certain extent, and the damage of the water supply equipment without negative pressure is avoided.
A numerical control pressure-superposed compensation type integrated non-negative pressure water supply device integrates a control system into the device to realize real integrated non-negative pressure water supply device. By adopting a laminating mode, one set of equipment can meet different requirements of a low area, a high area and an ultrahigh area on water pressure, and the floor area of the equipment and the construction cost of the equipment and a pump house are greatly reduced. Manual, automatic, remote activation or a combination of several means may be implemented. The frequency converter is adopted for speed regulation control, the water supply pressure is intelligently and quickly regulated according to the actual water demand, the working state of the equipment is switched, and the purposes of high efficiency and energy conservation are achieved. The pump set is rotated at regular time and is started and stopped first, so that the service life of the pump set is prolonged, and the maintenance cost is reduced. The outlet pressure stabilizing tank can eliminate outlet pressure fluctuation, eliminate the error between the outlet pressure and the set pressure through PID operation, control accuracy between the set pressure and the actual pressure is less than or equal to 0.01Mpa, and has a small-flow pressure maintaining function. The stationary flow jar automatic compensation municipal pipe network pressure. And the limit value of negative pressure can be adjusted and eliminated, the negative pressure generated by the steady flow tank of the water supply equipment in actual production is quantitatively eliminated, and the water supply equipment and the municipal pipe network are effectively prevented from being damaged. The energy-saving performance and the safety of the water supply equipment are improved. Meanwhile, the stability of the process is enhanced, the model changing time of the product is shortened, and the method has important significance for improving the production efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The numerical control overlying compensation type integrated non-negative pressure water supply device comprises a tank body (1) and is characterized in that a water inlet collecting pipe (3) is connected onto the tank body (1), a low-region water supply pump set (5) and a middle-region water supply pump set (8) are connected onto the water inlet collecting pipe (3) in parallel, one ends, far away from the water inlet collecting pipe (3), of the low-region water supply pump set (5) and the middle-region water supply pump set (8) are connected with a low-region water outlet pipe (13), and the low-region water outlet pipe (13) is connected with a high-region water supply mechanism;
the high-region water supply mechanism comprises a high-region water supply pump (12) and a superposed pump set (9) which are communicated in parallel, and one ends of the high-region water supply pump (12) and the superposed pump set (9) far away from the low-region water outlet pipe (13) are connected with a high-region water outlet pipe (11);
and the high-region water outlet pipe (11) and the low-region water outlet pipe (13) are both provided with a pressure monitoring device (7) and a pressure protection device (10).
2. A digital control pressure-superposed compensation type integrated non-negative-pressure water supply device according to claim 1, characterized in that the front wall of the tank body (1) is respectively provided with a water inlet (2), a pressure monitoring device (7) and an electromagnetic valve (4).
3. A digital control pressure-superposed compensation type integrated water supply equipment without negative pressure as claimed in claim 2, wherein the high-region water outlet pipe (11) and the low-region water outlet pipe (13) are also provided with air pressure tanks (6).
4. The numerical control pressure-superposed compensation type integrated non-negative-pressure water supply equipment as claimed in any one of claims 1 to 3, further comprising a control system.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113529848A (en) * | 2021-08-25 | 2021-10-22 | 上海伺水科技有限公司 | Numerical control pressure-superposed compensation type integrated non-negative pressure water supply equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113529848A (en) * | 2021-08-25 | 2021-10-22 | 上海伺水科技有限公司 | Numerical control pressure-superposed compensation type integrated non-negative pressure water supply equipment |
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