CN111572708A - Pure pump type pressure water supply device - Google Patents
Pure pump type pressure water supply device Download PDFInfo
- Publication number
- CN111572708A CN111572708A CN202010468126.7A CN202010468126A CN111572708A CN 111572708 A CN111572708 A CN 111572708A CN 202010468126 A CN202010468126 A CN 202010468126A CN 111572708 A CN111572708 A CN 111572708A
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- water supply
- water
- pressure
- control valve
- pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a pure pump type pressure water supply device, which is characterized in that: including working shaft, water tank, pressure control valve and supply channel, the end of intaking of working shaft is connected with the play water end of water tank, and the play water end of working shaft passes through the check valve and is connected with the end of intaking of supply channel, is equipped with the intercommunication pipeline between the end of intaking of supply channel and the water tank, on the communicating pipeline between supply channel and the water tank was located to the pressure control valve. The invention can eliminate the frequency converter and the frequency conversion motor in the frequency conversion water supply device, and is driven by the common motor, so that the water supply pump continuously runs at a constant speed, the water supply quantity and the water supply pressure are automatically adjusted according to the change of the water consumption, and the water supply pump can not generate heat due to the continuous running of low discharge capacity under the action of the pressure control valve, thereby saving the cost and the space, not only reducing the weight of the equipment, but also being convenient for the arrangement of a real ship.
Description
Technical Field
The invention relates to a pure pump type pressure water supply device, and belongs to the technical field of ship and ocean engineering.
Background
The pressure water supply device is a water supply mode commonly used in ship and ocean engineering, and the traditional pressure water supply device is generally composed of a pressure water tank, a water replenishing pump and two pressure switches. The lower part of the interior of the pressure water tank is filled with water, the upper part of the interior of the pressure water tank is filled with compressed air, when the liquid level of the pressure water tank is reduced, the pressure of the compressed air above the pressure water tank is reduced due to volume expansion, when the pressure is reduced to a low-pressure set value of a pressure switch, a water replenishing pump is started to replenish water, and at the moment, the pressure of the compressed air in the pressure water tank is the minimumWater supply pressure PE(ii) a When the liquid level of the pressure water tank rises gradually, the compressed air above the pressure water tank increases in pressure due to volume compression, when the pressure is increased to a high-pressure set value of a pressure switch, the water replenishing pump stops water replenishing, and the pressure of the compressed air in the pressure water tank is the maximum water supply pressure PA. Under the premise that the maximum starting and stopping times, the maximum water supply pressure and the minimum water supply pressure of the water replenishing pump are not changed every hour, the volume of the pressure water tank is in direct proportion to the displacement of the water replenishing pump.
With the development of ships and ocean engineering towards the large-scale direction, the number of personnel and water using appliances on the ships and ocean engineering is continuously increased, the demand for water supply is also continuously increased, and the discharge capacity of the water replenishing pump is increased more and more. The water replenishing pump is usually driven by a motor, the starting and stopping times of the motor per hour are not too large, otherwise the service life of the motor is unfavorable, in order to ensure that the starting and stopping frequency of the water replenishing pump is within a specified range, the volume of the pressure water tank is also continuously increased along with the increase of the discharge capacity of the water replenishing pump, the volume of the pressure water tank is continuously increased, the purchasing cost is increased, a great deal of difficulty is brought to the arrangement of a real ship, and the weight center of gravity of the ship and ocean engineering projects is also adversely affected.
Therefore, more and more ships and ocean engineering projects adopt variable frequency water supply devices, pressure water tanks are omitted, variable frequency motors are used for driving water supply pumps, the water pumps are enabled to run continuously, when the water consumption is increased, the water supply amount is increased and the water supply pressure is maintained by increasing the rotating speed of the water pumps, and when the water consumption is reduced, the water supply amount is reduced and the water supply pressure is controlled by reducing the rotating speed of the water pumps. However, the variable frequency water supply device also has its significant disadvantages: firstly, the frequency conversion water supply device adopts a frequency converter and a frequency conversion motor, so that the purchase cost is much higher than that of the water supply of the traditional pressure water tank; secondly, the harmonic waves generated by the frequency conversion system can have great influence on the safety and the reliability of the power grid.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the traditional pressure water supply installation pressure water tank that current ocean engineering project adopted is bulky, and frequency conversion water supply installation purchasing cost is high, and the harmonic that frequency conversion system produced can produce the problem of influence to electric wire netting security and reliability.
In order to solve the problems, the technical scheme of the invention provides a pure pump type pressure water supply device, which is characterized in that: including working shaft, water tank, pressure control valve and supply channel, the end of intaking of working shaft is connected with the play water end of water tank, and the play water end of working shaft passes through the check valve and is connected with the end of intaking of supply channel, is equipped with the intercommunication pipeline between the end of intaking of supply channel and the water tank, on the communicating pipeline between supply channel and the water tank was located to the pressure control valve.
Preferably, the water supply pump is driven by a common motor.
Preferably, the water supply pump is operated in a continuous mode.
Preferably, the water supply pump adopts a centrifugal pump, and the lift of the water supply pump tends to rise along with the reduction of the discharge capacity of the water supply pump.
Preferably, the pressure control valve may automatically adjust an opening degree according to the supply water pressure, and a flow rate at the maximum opening degree is not less than a minimum displacement required for the continuous normal operation of the water supply pump.
Preferably, the water supply amount and the water supply pressure of the water supply pipeline are automatically adjusted according to the change of the water consumption, when the water consumption is increased, the working point of the water supply pump deviates to the direction of large discharge and low lift, the water supply amount is increased, and the water supply pressure is reduced; when the water consumption is reduced, the working point of the water supply pump deviates towards the direction of small discharge and high lift, the water supply amount is reduced, and the water supply pressure is increased.
Preferably, the water supply pressure of the water supply line is lower than the set pressure of the pressure control valve in the case of normal water use, the pressure control valve is in a closed state, and the amount of water flowing from the water supply line back to the water tank through the pressure control valve is zero.
Preferably, when the water consumption is reduced to make the pressure of the water supply pipeline be greater than or equal to the set pressure of the pressure control valve, the pressure control valve is gradually opened, part of water discharged by the water supply pump is supplied to a user, and the redundant water is returned to the water tank through the opened pressure control valve; when the water consumption is zero, the opening of the pressure control valve is opened to the maximum, and the water discharged by the water supply pump is completely returned to the water tank through the opened pressure control valve.
Preferably, when the water consumption reaches the peak flow, the water supply pressure of the water supply pipeline is not lower than the minimum water supply pressure required by the system; when the water consumption is zero, the water supply pressure of the water supply pipeline is not higher than the set pressure of the pressure control valve.
Compared with the prior art, the invention has the beneficial effects that:
1. the device does not need to be provided with a pressure water tank, a pressure switch and a controller, and the number, the volume, the weight and the cost of equipment contained in the device are lower than those of the traditional pressure water tank type water supply device, so that the cost is saved, and the arrangement on a ship is facilitated;
2. a frequency converter and a variable frequency motor are not needed, the number, the volume, the weight and the cost of equipment contained in the device are lower than those of a variable frequency pressure water supply device, the cost is saved, and the arrangement on a ship is convenient;
3. the water supply pump is in continuous operation, start-stop control is not needed, and the service life is longer;
4. the flow of the pressure control valve during the maximum opening is not less than the minimum displacement required by the continuous normal operation of the water supply pump, when the water consumption is zero, the water discharged by the water supply pump is completely returned to the water tank through the opened pressure control valve, the water supply pump can continuously operate for a long time, and the heating phenomenon caused by the excessively low displacement can be avoided.
The invention cancels the pressure water tank with larger volume and weight in the traditional pressure water tank water supply device, simultaneously cancels the pressure switch and the controller, the water supply pump continuously runs at constant speed, and does not need to adopt a frequency converter and a frequency conversion motor, the whole water supply device only comprises the water supply pump driven by a common motor and a pressure control valve, thereby greatly reducing the volume and the weight of the water supply device, greatly reducing the purchase cost and being very beneficial to the actual arrangement on the ship.
Drawings
Fig. 1 is a schematic structural view of a pure pump type pressure water supply device according to the present invention.
Description of reference numerals: 1. a water supply pump; 2. a check valve; 3. a water supply line; 4. a pressure control valve; 5. a water tank.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
As shown in figure 1, the pure pump type pressure water supply device comprises a water supply pump 1, a check valve 2, a water supply pipeline 3, a pressure control valve 4 and a water tank 5, wherein the water tank 5 is arranged on ships and ocean engineering, the water inlet end of the water supply pump 1 is connected with the water outlet end of the water tank 5, the water outlet end of the water supply pump 1 is connected with the water inlet end of the water supply pipeline 3 through the check valve 2, and the water supply pump 1 takes water from the water tank 5 and supplies the water to the water supply pipeline 3 on the ships and ocean engineering after passing through the check valve 2. Set up a communicating pipe way between water supply pipeline 3 and water tank 5, install pressure control valve 4 on communicating pipe between water supply pipeline 3 and water tank 5, when 3 pressures in water supply pipeline are less than the set pressure of pressure control valve 4, pressure control valve 4 closes, when 3 pressures in water supply pipeline are more than or equal to the set pressure of pressure control valve 4, pressure control valve 4 opens gradually.
The water supply pump 1 is driven by a common motor without adopting a variable frequency motor; the running mode is continuous running and does not need start-stop control. The water supply pump 1 adopts a centrifugal pump, the lift tends to rise along with the reduction of the discharge capacity of the water supply pump, the water supply amount and the water supply pressure can be automatically adjusted according to the change of the water consumption, and the pressure control valve 4 is in a closed state under the condition of normal water use.
The flow of the pressure control valve 4 at the maximum opening degree is not less than the minimum displacement required by the continuous normal operation of the water supply pump 1, and the water supply pump 1 cannot generate heat due to the continuous operation of low displacement.
The water supply quantity and the water supply pressure of the pure pump type pressure water supply device can be automatically adjusted according to the change of the water consumption: when the water consumption is increased, the working point of the water supply pump 1 deviates towards the direction of large discharge and low lift, the water supply amount is increased, the water supply pressure is reduced, when the peak flow is reached, the water supply pressure is not lower than the minimum water supply pressure required by the system, the water supply pressure of the water supply pipeline 3 is lower than the set pressure of the pressure control valve 4 under the normal water use condition, the pressure control valve 4 is in a closed state, and the water amount flowing back to the water cabin 5 from the water supply pipeline 3 through the pressure control valve 4 is zero.
When the water consumption is reduced, the working point of the water supply pump 1 deviates to the direction of small discharge and high lift, the water supply amount is reduced, and the water supply pressure is increased; when the water consumption is continuously reduced and the water supply pressure is increased to the set pressure of the pressure control valve 4, the pressure control valve 4 is gradually opened, part of water discharged by the water supply pump 1 is supplied to a user, and the redundant water returns to the water tank 5 through the opened pressure control valve 4; when the water consumption is zero, the opening degree of the pressure control valve 4 is opened to the maximum, the water discharged by the water supply pump 1 is completely returned to the water tank 5 through the opened pressure control valve 4, and the water supply pressure is not higher than the set pressure of the pressure control valve 4.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a pure pump formula pressure water supply installation which characterized in that: including working shaft (1), water tank (5), pressure control valve (4) and supply channel (3), the end of intaking of working shaft (1) is connected with the play water end of water tank (5), and the play water end of working shaft (1) is connected through the end of intaking of check valve (2) and supply channel (3), is equipped with the intercommunication pipeline between the end of intaking of supply channel (3) and water tank (5), pressure control valve (4) are located on the communicating pipeline between supply channel (3) and water tank (5).
2. A pure pump type pressure water supply device as claimed in claim 1, wherein: the water supply pump (1) is driven by a common motor.
3. A pure pump type pressure water supply device as claimed in claim 1, wherein: the water supply pump (1) is operated continuously.
4. A pure pump type pressure water supply device as claimed in claim 1, wherein: the water supply pump (1) adopts a centrifugal pump, and the lift of the water supply pump (1) is in an ascending trend along with the reduction of the discharge capacity of the water supply pump.
5. A pure pump type pressure water supply device as claimed in claim 1, wherein: the pressure control valve (4) can automatically adjust the opening according to the water supply pressure, and the flow at the maximum opening is not less than the minimum displacement required by the continuous normal operation of the water supply pump (1).
6. A pure pump type pressure water supply device as claimed in claim 1, wherein: the water supply amount and the water supply pressure of the water supply pipeline (3) are automatically adjusted according to the change of the water consumption, when the water consumption is increased, the working point of the water supply pump (1) is deviated to the direction of large discharge and low lift, the water supply amount is increased, and the water supply pressure is reduced; when the water consumption is reduced, the working point of the water supply pump (1) deviates to the direction of small discharge and high lift, the water supply amount is reduced, and the water supply pressure is increased.
7. A pure pump type pressure water supply device as claimed in claim 6, wherein: under the condition of normal water use, the water supply pressure of the water supply pipeline (3) is lower than the set pressure of the pressure control valve (4), the pressure control valve (4) is in a closed state, and the water quantity flowing back to the water cabin (5) from the water supply pipeline (3) through the pressure control valve (4) is zero.
8. A pure pump type pressure water supply device as claimed in claim 6, wherein: when the water consumption is reduced to ensure that the pressure of the water supply pipeline (3) is more than or equal to the set pressure of the pressure control valve (4), the pressure control valve (4) is gradually opened, part of water discharged by the water supply pump (1) is supplied to a user, and the redundant water returns to the water tank (5) through the opened pressure control valve (4); when the water consumption is zero, the opening degree of the pressure control valve (4) is opened to the maximum, and the water discharged by the water supply pump (1) is completely returned to the water tank (5) through the opened pressure control valve (4).
9. A pure pump type pressure water supply device as claimed in claim 6, wherein: when the water consumption reaches the peak flow, the water supply pressure of the water supply pipeline (3) is not lower than the minimum water supply pressure required by the system; when the water consumption is zero, the water supply pressure of the water supply pipeline (3) is not higher than the set pressure of the pressure control valve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468126.7A CN111572708A (en) | 2020-05-28 | 2020-05-28 | Pure pump type pressure water supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468126.7A CN111572708A (en) | 2020-05-28 | 2020-05-28 | Pure pump type pressure water supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111572708A true CN111572708A (en) | 2020-08-25 |
Family
ID=72115791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010468126.7A Pending CN111572708A (en) | 2020-05-28 | 2020-05-28 | Pure pump type pressure water supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111572708A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216059A (en) * | 2021-12-27 | 2022-03-22 | 上海康措流体控制有限公司 | Automatic pump room pressure flow water hammer control system and control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU831931A1 (en) * | 1978-12-28 | 1981-05-23 | Chaplygin Andrej | Water supply system of a settlement |
| CA2476483A1 (en) * | 2004-08-18 | 2006-02-18 | Walter M. Ratz | Water pressure pump |
| CN102373731A (en) * | 2010-08-20 | 2012-03-14 | 江苏鑫东方环保设备科技有限公司 | Automatic water supply system for workshop |
| CN203603214U (en) * | 2013-11-26 | 2014-05-21 | 武钢集团昆明钢铁股份有限公司 | Water supply quick response device with adjusting function |
| CN105604135A (en) * | 2016-03-07 | 2016-05-25 | 上海市城市建设设计研究总院 | Overflow device of pump station circulation cooling water tank |
| CN207959365U (en) * | 2018-03-13 | 2018-10-12 | 甘肃交达工程检测科技有限公司 | A kind of energy saving detection device of building engineering construction |
-
2020
- 2020-05-28 CN CN202010468126.7A patent/CN111572708A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU831931A1 (en) * | 1978-12-28 | 1981-05-23 | Chaplygin Andrej | Water supply system of a settlement |
| CA2476483A1 (en) * | 2004-08-18 | 2006-02-18 | Walter M. Ratz | Water pressure pump |
| CN102373731A (en) * | 2010-08-20 | 2012-03-14 | 江苏鑫东方环保设备科技有限公司 | Automatic water supply system for workshop |
| CN203603214U (en) * | 2013-11-26 | 2014-05-21 | 武钢集团昆明钢铁股份有限公司 | Water supply quick response device with adjusting function |
| CN105604135A (en) * | 2016-03-07 | 2016-05-25 | 上海市城市建设设计研究总院 | Overflow device of pump station circulation cooling water tank |
| CN207959365U (en) * | 2018-03-13 | 2018-10-12 | 甘肃交达工程检测科技有限公司 | A kind of energy saving detection device of building engineering construction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216059A (en) * | 2021-12-27 | 2022-03-22 | 上海康措流体控制有限公司 | Automatic pump room pressure flow water hammer control system and control method |
| CN114216059B (en) * | 2021-12-27 | 2024-04-19 | 上海康措流体控制有限公司 | Pump room pressure flow water hammer automatic control system and control method |
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| PB01 | Publication | ||
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Application publication date: 20200825 |