CN212001408U

CN212001408U - No-steady flow tank and no-negative pressure water supply unit

Info

Publication number: CN212001408U
Application number: CN202020448748.9U
Authority: CN
Inventors: 胡范禹
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-22
Filing date: 2020-03-22
Publication date: 2020-11-24
Anticipated expiration: 2030-03-22

Abstract

The utility model relates to a no stationary flow jar does not have negative pressure water supply unit with municipal tap water pipe network lug connection. It includes water pump package 1, absorbs water pipe 2, outlet pipe 3, bypass pipe 4, negative pressure annihilator 5, teletransmission manometer 6, water level detection and control ware 7, check valve 8, switch board 9, municipal tap water pipe network 10, and negative pressure annihilator 5, water level detection and control ware 7 are installed on absorbing water pipe 2, and negative pressure annihilator 5 prevents effectively that the pipe 2 and the municipal tap water pipe network 10 negative pressure of absorbing water from forming. The utility model discloses no stationary flow jar does not have the pressure stack that negative pressure water supply unit can make full use of municipal water pipe network provided and supplies water, and the stationary flow jar is not established to this unit, simple structure, and area is little, practices thrift manufacturing cost, does not produce idle work, reduces energy consumption, improves no negative pressure water supply unit fail safe nature, realizes full-automatic unmanned on duty water supply.

Description

No-steady flow tank and no-negative pressure water supply unit

Technical Field

The utility model belongs to the technical field of the pressure boost of feedwater, be used for high-rise building feedwater secondary supercharging equipment.

Background

1. In most areas of China, municipal tap water networks generally have pressure ranges: the lower limit is 0.20MPa to the upper limit is 0.40MPa, the pressure of a municipal tap water pipe network cannot meet the increasing water supply requirements of tall buildings, and the clear text of water supply regulations of various places specifies: the secondary water supply equipment directly corresponds to the urban municipal water supply network to prevent water use of other users from being influenced by negative pressure reasons. At present, a non-negative pressure water supply unit is generally adopted to realize secondary pressurization water supply for high-rise buildings, a steady flow tank must be arranged in the non-negative pressure water supply unit, the water storage capacity in the steady flow tank is utilized to relieve the shortage of the incoming volume of a municipal tap water pipe network, and the water supply to the high-rise buildings after the pressure superposition provided by a water pump set and the municipal tap water pipe network is realized.

2. The background art implementation mode is as follows: referring to the attached figure 1, a municipal tap water pipe network 17 is connected with a steady flow tank 11, the steady flow tank 11 is connected with a water pump set 12, and a negative pressure eliminator 13 and a water level detector 14 are arranged on the steady flow tank 11.

Under the normal water supply pressure of a municipal tap water pipe network 17, for example, when the pressure of the municipal tap water pipe network is 0.20Mpa at the lower limit, the pressure limit of a water level detector 14 on a water absorption pipe steady flow tank 11 of a water pump set 12 is set to be not lower than 0.1Mpa, and the water supply pressure interval of a remote transmission pressure gauge 15 on a water outlet pipe of a high-rise water supply pump set 12 is set to be P₁Mpa (lower limit) -P₂Mpa (upper limit).

When the water pump unit 12 is started, the control cabinet 16 issues a command to limit the upper limit P₂The Mpa pressure target supplies water to the high-rise building, and when the water supply pressure reaches the upper limit P of the set pressure interval₂And Mpa, the water pump set 12 stops pressurizing and sleeping. When the water supply pressure falls to the lower limit P₁When the pressure is Mpa, the water pump set 12 is restarted and pressurized again to the upper limit P₂Mpa。

When the municipal tap water pipe network 17 drops below 0.1Mpa due to fault pressure, the pressure in the steady flow tank 11 also drops below 0.1Mpa, and the water level detector 14 feeds back a signal to the control cabinet 16 and sends an instruction to stop the operation of the water pump set 12. And when the pressure of the municipal tap water pipe network 17 is recovered to be more than 0.1Mpa, the water pump set 12 is started again to supply water to the high-rise building.

When the control cabinet 16 and the automatic control system are in failure and the whole water supply system can not automatically and normally supply water, the water pump set 12 can manually adjust the working frequency to supply water, at the moment, the non-negative pressure water supply unit is in an abnormal automatic running state, when the quantity of the municipal tap water pipe network 17 is insufficient, the pressure of the steady flow tank 11 is reduced to be below 0.0Mpa, the negative pressure eliminator 13 is opened, air enters the steady flow tank 11, and the steady flow tank 11 and the municipal tap water pipe network 17 are prevented from forming negative pressure.

When the municipal tap water pipe network 17 is full, the pressure of the steady flow tank 11 is increased to be more than 0.0Mpa, the negative pressure eliminator 14 exhausts air, the air in the steady flow tank 11 is exhausted, and the water pump set 12 recovers normal power frequency water supply. When the automatic function of the control cabinet is recovered to be normal, the water pump set 12 carries out frequency conversion again and automatically superposes pressure to supply water normally.

The negative pressure eliminator 13 starts water supply under abnormal conditions, is a safety measure for self protection of a non-negative pressure water supply unit, and cannot be used as a normal water supply condition to operate frequently for a long time. The water storage capacity in the steady flow jar 11 is minimum, and the steady flow jar 11 is the closed tank, because the compression factor of water is little, according to municipal tap water pipe network 17 pressure fluctuation law, the steady flow jar 11 can't form substantial compensation balance to steady water supply, does not play the compensation water supply effect to overcoming municipal tap water pipe network 17 water supply inadequacy promptly, if municipal tap water pipe network water supply volume can't reach the requirement, steady flow jar 11 trace water storage volume does not play any effect to normal water supply, and steady flow jar 11 becomes the furnishings all the time.

When the pressure in the steady flow tank 11 is lower than 0.10Mpa, the water pump set 12 provides lift and then the pressure of the municipal tap water pipe network 17 is superposed, the water supply requirement of the high-rise building can not be met gradually, the water pump set 12 continues to operate, the work is ineffective, the energy is wasted, and the start of the last safety device negative pressure eliminator 13 is not needed easily.

When the municipal tap water pressure is reduced to below 0.1Mpa, the water pump set 12 should stop running to prevent the municipal tap water pipe network from forming negative pressure.

If the pressure of the municipal tap water pipe network further drops to be below 0.00Mpa, only the water pump set 12 can be used for water supply by lift, the supplied water supply pressure can not meet the height requirement of a high-rise building, useless work can be done in vain, the danger of negative pressure generated by the municipal tap water pipe network is also met, and the water storage capacity of the flow stabilizing tank 11 is too small to play a compensation role. The steady flow tank 11 arranged in the non-negative pressure water supply unit increases the difficulty and cost of unit manufacture, increases the cost of manufacture, transportation and installation by about 30 percent, and also increases the maintenance cost of the whole unit.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to overcome among the prior art not have negative pressure water supply unit manufacturing cost height, extravagant resource, increase transportation installation maintenance cost, do shortcomings such as useless power extravagant energy. The non-steady flow tank and non-negative pressure water supply unit can effectively prevent negative pressure from forming, improve the performance of the original non-negative pressure water supply unit and realize the purpose of safe, intelligent and full-automatic water supply.

In order to solve the technical problem, the utility model discloses no stationary flow jar does not have negative pressure water supply unit, it includes: the water pump set 1, the water suction pipe 2, the water outlet pipe 3, the bypass pipe 4, the negative pressure eliminator 5, the remote pressure gauge 6, the water level detector 7, the check valve 8, the pipe fitting valve, the control cabinet 9 and the municipal tap water pipe network 10. The negative pressure eliminator 5 and the water level detector 7 are directly installed on the water suction pipe 2, and intelligent full-automatic control water supply is realized.

The utility model adopts the above technical scheme have following advantage:

1. the operation cost is low. 2. The structure is simple. 3. The occupied area is small. 4. Resources are saved without the flow stabilization tank. 5. And the manufacturing, transportation and installation costs are saved. 6. The energy consumption is reduced. 7. The safety and reliability of the water supply unit without the steady flow tank and the negative pressure are improved. 8. And negative pressure formation are avoided 9, and full-automatic unattended water supply is realized.

Drawings

Fig. 1 is a schematic diagram of an original background non-negative pressure water supply unit.

The device comprises a flow stabilizing tank 11, a water pump group 12, a negative pressure eliminator 13, a water level detector and controller 14, a remote transmission pressure gauge 15, a control cabinet 16 and a municipal tap water pipe network 17.

Fig. 2 is a schematic view of the non-steady flow tank non-negative pressure water supply unit of the present invention.

The water pump set 1, the water suction pipe 2, the water outlet pipe 3, the bypass pipe 4, the negative pressure eliminator 5, the remote pressure gauge 6, the water level detector 7, the check valve 8, the control cabinet 9 and the municipal tap water pipe network 10.

Detailed Description

The utility model discloses no stationary flow jar does not have negative pressure water supply unit's concrete implementation step:

referring to fig. 2, it includes: the water pump set 1, absorb water pipe 2, outlet pipe 3, bypass pipe 4, negative pressure annihilator 5, teletransmission manometer 6, water level detection and control ware 7, check valve 8, switch board 9 and pipe fitting valve, municipal tap water pipe network 10, negative pressure annihilator 5, water level detection and control ware 7 direct mount absorb water on pipe 2.

Under the normal water supply pressure of the municipal tap water network 10, for example, when the pressure is 0.20Mpa, the water level monitor 7 on the water suction pipe 2 is set to limit the pressure not to be lower than 0.1Mpa, and the remote pressure gauge 6 on the water outlet pipe 3 is set to set the water supply pressure to be P₁Mpa (lower limit) -P₂Mpa (upper limit), when the water pump set 1 is started to pump water, the control cabinet 9 sends out an instruction P₂The Mpa target pressure supplies water to the high-rise building, when the remote pressure gauge 6 reaches the highest set pressure P₂And when the pressure is Mpa, the water pump set 1 stops running and sleeping. When the remote pressure gauge 6 is lowered to P₁When the pressure is Mpa, the water pump set 1 is restarted to automatically pressurize again for normal water supply.

When the pressure of the municipal tap water network 10 is enough to meet the water supply pressure of the high-rise building, the water pump set 1 stops running, the check valve 8 automatically opens, and municipal tap water directly supplies water to the high-rise building through the bypass pipe 4.

When the pressure of the municipal tap water network 10 is reduced to be below 0.1Mpa due to faults, the pressure of the water suction pipe 2 is also reduced to be below 0.1Mpa, and the water level detector 7 feeds back a signal to the control cabinet 9 and sends an instruction to stop the operation of the water pump set 1. When the pressure of the municipal tap water network 10 is restored to be above 0.1Mpa, the water pump unit 1 is started again to supply water to the high-rise building.

When the control cabinet 9 and the control system thereof have faults and the no-steady-flow-tank no-negative-pressure water supply unit cannot normally and automatically supply water, the water pump set 1 can manually transfer power-frequency water supply, and at the moment, the no-steady-flow-tank no-negative-pressure water supply unit runs in a non-automatic state.

When the municipal tap water is not supplied enough, the pressure of the water suction pipe 2 is reduced to be below 0.0Mpa, the negative pressure eliminator 5 is opened immediately, air enters the negative pressure eliminator 5, and the water suction pipe 2 and the municipal tap water pipe network 10 are prevented from forming negative pressure.

When the municipal tap water pipe network 10 supplies sufficient water, the pressure of the water suction pipe 2 rises to be more than 0.0Mpa, the air in the negative pressure eliminator 5 is discharged, the negative pressure eliminator 5 is filled with water, the negative pressure eliminator 5 is closed immediately, and the water pump set 1 can supply water normally at power frequency.

When the control cabinet 9 and the control system recover normal functions, the water supply unit without the flow stabilizing tank and the negative pressure recovers an automatic normal water supply state, and the water pump unit automatically supplies water by pressure superposition again.

If the negative pressure eliminator 5 is started, water supply under an abnormal state is required, the safety measure for self-protection of the unit is provided, the water supply cannot be used as one of normal water supply states, and the negative pressure eliminator 5 is prevented from being started as much as possible. When the pressure of the water level detector and controller 7 is lower than the minimum 0.10Mpa, the water pump group 1 must stop running, so as to avoid the water suction pipe 2 from forming negative pressure, and the water pump group 1 has low lift, so that the pressure of the municipal tap water pipe network 10 cannot meet the water supply requirement of the high-rise building, and the water pump group 1 should stop pumping. That is, if the water pump unit 1 continues to operate under the condition that the pressure of the municipal tap water pipe network 10 is extremely low, the unit will do ineffective work, waste energy, and the municipal tap water pipe network 10 is easy to form negative pressure. When the municipal tap water pressure rises to above 0.1Mpa, the water pump set 1 can continue to operate to supply water normally and automatically again.

The utility model discloses no stationary flow jar does not have negative pressure water supply unit working costs and hangs down, simple structure, and area is little, does not establish stationary flow jar and reduces the wasting of resources, practices thrift manufacturing, transportation, installation cost, reduces energy consumption, prevents that the negative pressure from forming, improves no stationary flow jar does not have negative pressure water supply unit fail safe nature, realizes full-automatic unmanned on duty water supply.

Claims

1. No stationary flow jar does not have negative pressure water supply unit, it includes water pump package (1), absorbs water pipe (2), outlet pipe (3), bypass pipe (4), negative pressure annihilator (5), teletransmission manometer (6), water level detection and control ware (7), check valve (8), switch board (9), municipal tap water pipe network (10), characterized by: negative pressure annihilator (5), water level detection and control ware (7) direct mount is on absorbing water pipe (2), it meets with water pump group (1) sunction inlet to absorb water pipe (2), outlet pipe (3) and water pump group (1) delivery port are connected, it sets up bypass pipe (4) to absorb water between pipe (2) and outlet pipe (3), establish check valve (8) on bypass pipe (4), be equipped with teletransmission manometer (6) on outlet pipe (3), switch board (9) are according to water pump group (1) and teletransmission manometer (6), the no negative pressure water supply of feedback signal automatic control of water level detection and control ware (7), it directly inserts municipal tap water pipe network (10) to absorb water pipe (2).