Intelligent circulating water pump and control method thereof

Abstract

The invention relates to the technical field of air energy systems, in particular to an intelligent circulating water pump and a control method thereof. A motor; a one-way supercharger; the supplementing unit comprises a kettle body, a water outlet valve, a low-liquid-level one-way protection valve, a liquid injection port and an anti-volatilization one-way valve; a detection unit; the control unit is provided with a pressure upper and lower limit triggering unit and a water temperature upper and lower limit triggering unit, monitors and alarms the pressure and the temperature in the air energy pipeline, and determines the pressure drop time and the pressure drop degree according to the water pressure characteristic and / or the third influence degree; the control unit is further used for determining the liquid supplementing time of the kettle body according to the flow or water level data of the water outlet; the internal pressure of the air energy pipeline system is effectively balanced, it is guaranteed that the internal pressure of the air energy pipeline system is stable, and the operation stability of the air energy pipeline system is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of air energy systems, and in particular to an intelligent circulating water pump and a control method thereof. Background Art

[0002] The pressure stability in the air-to-air piping system is critical to the overall operating efficiency of the system. If the pressure is too high, it may increase the energy consumption of the equipment, cause premature wear of the mechanical parts inside the equipment, and even cause failure. On the contrary, if the pressure is too low, it will affect the heating and cooling effect of the system, reduce the performance and service life of the equipment. In actual operation, changes in ambient temperature and water consumption will affect the pressure in the system.

[0003] In the air energy piping system, the pump is one of the key components. If the pump runs at too high or too low pressure for a long time, it may cause serious damage to it. By replenishing the water in the pump through pressure monitoring, it can ensure that the pump works at the appropriate pressure, thereby extending its service life and reducing maintenance costs. In addition, pressure regulation can also prevent safety problems such as pipeline rupture and leakage caused by excessive pressure.

[0004] Therefore, there is an urgent need for an intelligent circulating water pump and a control method thereof to effectively balance the pressure in the air energy pipeline system and ensure the internal pressure stability of the air energy pipeline system. Summary of the invention

[0005] To this end, the present invention provides an intelligent circulating water pump and a control method thereof, so as to overcome the problem of lack of pressure regulation in the air energy pipeline system in the prior art.

[0006] To achieve the above objectives, on the one hand, the present invention provides an intelligent circulating water pump, comprising:

[0007] A pump body, wherein one end of the pump body is provided with a water inlet, and the other end of the pump body is provided with a water outlet, for extracting water flow and outputting the water flow into the air energy pipeline;

[0008] A motor, which is arranged on the top of the pump body and is used to adjust the output pressure and output flow of the pump body;

[0009] A one-way booster connected to the pump body to output water to the pipeline in one direction and increase the water pressure in the pipeline;

[0010] A replenishing unit connected to the one-way booster comprises a kettle body connected to the pump body for storing replenishing liquid, a water outlet valve arranged near the bottom side of the kettle body and connected to the one-way booster through a hose, and a low liquid level one-way protection valve arranged near one side of the water outlet valve for identifying the liquid level information of the replenishing liquid in the kettle body and opening and closing the water outlet valve, wherein the top of the kettle body is provided with a liquid injection port for injecting replenishing liquid and an anti-volatile one-way valve arranged at the liquid injection port for one-way passage of replenishing liquid;

[0011] A detection unit, which is connected to the pump body and the supplementary unit respectively, and is used to detect the pressure data and temperature data of the water flow in the pipeline at several time points, and to detect the water level data of the supplementary liquid in the supplementary unit and the outlet flow rate;

[0012] A control unit is connected to the detection unit, the supplementary unit and the pump body respectively. The control unit includes a pressure upper and lower limit trigger unit and a water temperature upper and lower limit trigger unit. The pressure upper and lower limit trigger unit is used to adjust the pressure and alarm according to the comparison result between the current pressure data in the air energy pipeline and the preset pressure threshold value. The water temperature upper and lower limit trigger unit is used to alarm according to the comparison result between the current temperature data in the air energy pipeline and the preset temperature threshold value.

[0013] Further, the control unit is further used to determine the water pressure characteristics according to the pressure data, determine the third degree of influence of temperature on the water pressure according to the temperature data and the water pressure characteristics, determine the pressure drop timing according to the water pressure characteristics and / or the third degree of influence, determine the pressure drop degree according to the pressure drop timing, the pressure data and the degree of influence, and determine the liquid replenishment method of the replenishment unit according to the pressure drop timing and the pressure drop degree. The control unit is further used to determine the liquid replenishment timing of the kettle body according to the water outlet flow or water level data;

[0014] Wherein, the water pressure characteristic includes a first pressure characteristic and a second pressure characteristic.

[0015] Furthermore, the control unit determines a pressure stabilization stage based on the pressure data and a preset pressure threshold, and determines a first pressure characteristic of the water flow pressure in the pipeline based on the pressure data corresponding to the pressure stabilization stage. The control unit also determines a pressure fluctuation stage based on the pressure data and a preset pressure threshold, and determines a second pressure characteristic of the water flow pressure in the pipeline based on the pressure data corresponding to the pressure fluctuation stage.

[0016] Further, the control unit determines a first degree of influence of temperature on water pressure according to the first pressure characteristic and the temperature data in the pressure stable stage, determines a second degree of influence of temperature on water pressure according to the second pressure characteristic and the temperature data in the pressure fluctuation stage, and determines a third degree of influence of temperature on water pressure according to the first degree of influence and the second degree of influence;

[0017] The degree of influence is calculated based on the temperature data and pressure data during the pressure stability stage and the pressure fluctuation stage.

[0018] Further, the control unit determines the pressure drop timing according to the water pressure characteristics and / or the third influence degree, and determines the pressure drop degree according to the pressure data detected after the pressure drop timing;

[0019] Wherein, if the second pressure characteristic is greater than the preset second pressure characteristic, the corresponding time point when the second pressure characteristic is greater than the preset second pressure characteristic is the pressure drop timing;

[0020] If the impact degree exceeds the preset impact degree, the corresponding time point when the impact degree exceeds the preset impact degree is the pressure drop timing.

[0021] Furthermore, the control unit determines the liquid replenishing method of the replenishing unit according to the pressure drop degree when the pressure drops;

[0022] Wherein, if the pressure drop does not exceed the preset first level, the replenishing unit performs slow liquid injection / intermittent liquid injection;

[0023] If the pressure drop exceeds a preset first level, the replenishment unit performs rapid injection / continuous injection.

[0024] Furthermore, the control unit determines a first injection speed of the replenishment unit according to the pressure drop degree and the pipeline volume under slow injection conditions, or determines an injection interval of the replenishment unit according to the pressure drop degree and a preset injection speed under intermittent injection conditions.

[0025] Furthermore, the control unit determines the second injection speed of the replenishment unit according to the pressure drop degree and the pipeline volume under the condition of rapid injection, or determines the injection amount of the replenishment unit according to the pressure recovery degree under the condition of continuous injection.

[0026] Furthermore, the control unit compares the water outlet flow rate with a preset flow rate, and determines the liquid replenishment timing according to the comparison result, or determines the liquid replenishment timing according to the water level data and a preset water level.

[0027] On the other hand, the present invention provides a control method for an intelligent circulating water pump, comprising:

[0028] Step S1, obtaining pressure data and temperature data of water flow in the pipeline of the intelligent circulating water pump, and comparing the pressure data and temperature data with corresponding thresholds to determine whether to trigger pressure adjustment and / or alarm;

[0029] Step S2, determining a water pressure characteristic according to the pressure data, and determining a third degree of influence of temperature on water pressure according to the temperature data and the water pressure characteristic, wherein the water pressure characteristic includes a first pressure characteristic and a second pressure characteristic;

[0030] Step S3, predicting a pressure drop timing according to the water pressure characteristics and / or the third impact degree;

[0031] Step S4, determining the degree of pressure drop according to the predicted pressure drop timing, the pressure data of the water flow in the current pipeline and the third influence degree;

[0032] Step S5, selecting a fluid replenishment method of the replenishment unit based on the predicted pressure drop timing and pressure drop degree, including a first fluid replenishment method and a second fluid replenishment method, wherein the first fluid replenishment method is slow fluid injection and / or intermittent fluid injection, and the second fluid replenishment method is fast fluid injection and / or continuous fluid injection;

[0033] Step S6, monitoring the water outlet flow and / or water level data in the kettle body of the replenishment unit of the intelligent circulating water pump, and determining the time and amount of water replenishment of the kettle body according to the water outlet flow and / or water level data.

[0034] Compared with the prior art, the beneficial effect of the present invention lies in that the control unit in the present invention is provided with a pressure upper and lower limit trigger unit and a water temperature upper and lower limit trigger unit to monitor and alarm the pressure and temperature in the air energy pipeline, effectively monitor the system pressure in the air energy pipeline, ensure the internal pressure stability of the air energy pipeline system, and ensure the operation stability of the air energy pipeline system.

[0035] Furthermore, the present invention determines a first degree of influence based on the first pressure characteristic and the pressure stabilization stage, and determines a second degree of influence based on the second pressure characteristic and the pressure fluctuation stage, and determines a third degree of influence of temperature on water pressure based on the first degree of influence and the second degree of influence, thereby further effectively balancing the pressure in the air energy pipeline system, ensuring the internal pressure stability of the air energy pipeline system, and ensuring the operating stability of the air energy pipeline system.

[0036] Furthermore, the present invention determines the timing of pressure drop according to the water pressure characteristics and / or the third degree of influence, thereby replenishing the air energy pipeline at the timing of pressure drop, thereby further effectively balancing the pressure in the air energy pipeline system, ensuring the internal pressure stability of the air energy pipeline system, and ensuring the operating stability of the air energy pipeline system.

[0037] Furthermore, the present invention determines the pressure change amplitude according to the pressure data after the pressure drop opportunity, and determines the pressure drop degree according to the pressure change amplitude and the influence degree. At the pressure drop opportunity, the liquid replenishment method of the replenishment unit is determined according to the pressure drop degree, further ensuring the internal pressure stability of the air energy pipeline system and ensuring the operation stability of the air energy pipeline system.

[0038] Furthermore, under the corresponding rehydration mode, the present invention determines the injection speed, injection interval time and injection amount of the replenishment unit into the pump body according to the pressure drop degree and the pipeline volume, thereby further ensuring that the amount of replenishment liquid in the rehydration pot is always sufficient, thereby further effectively balancing the pressure in the air energy pipeline system, ensuring the internal pressure stability of the air energy pipeline system, and ensuring the operating stability of the air energy pipeline system.

[0039] Furthermore, the present invention determines the timing of refilling according to the comparison result between the water outlet flow and the preset flow, or determines the timing of refilling according to the water level data and the preset water level, to ensure that the amount of replenishing liquid in the refilling pot is always sufficient, thereby further effectively balancing the pressure in the air energy pipeline system, ensuring the stability of the internal pressure of the air energy pipeline system, and ensuring the operating stability of the air energy pipeline system.

[0040] Furthermore, the intelligent circulating water pump in the present invention can determine the third degree of influence of temperature on water pressure based on temperature data and water pressure characteristics, determine the timing of pressure drop based on water pressure characteristics and / or the third degree of influence, determine the degree of pressure drop based on the timing of pressure drop, pressure data and the degree of influence, and determine the replenishment method and timing of replenishment of the replenishment unit based on the timing of pressure drop and the degree of pressure drop, thereby effectively balancing the pressure in the air energy pipeline system, ensuring the internal pressure stability of the air energy pipeline system, and ensuring the operating stability of the air energy pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the structure of the intelligent circulating water pump of the present invention from a first perspective;

[0042] Figure 2 This is a schematic diagram of the structure of the intelligent circulating water pump of the present invention from a second viewing angle;

[0043] Figure 3 A flow chart for determining the degree of influence of temperature on pressure for the intelligent circulating water pump of the present invention;

[0044] Figure 4 It is a flow chart of the control method of the intelligent circulating water pump of the present invention;

[0045] In the figure: 1, pump body; 101, water inlet; 102, water outlet; 2, motor; 3, one-way booster; 401, kettle body; 402, water outlet valve; 403, low liquid level one-way protection valve; 404, liquid filling port; 405, anti-evaporation one-way valve; 5, hose; 6, detection unit; 7, control unit. DETAILED DESCRIPTION

[0046] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0048] It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are merely for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, it should also be noted that, in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0049] See also Figure 1 to Figure 3 As shown, Figure 1 This is a schematic diagram of the structure of the intelligent circulating water pump of the present invention from a first perspective; Figure 2 This is a schematic diagram of the structure of the intelligent circulating water pump of the present invention from a second viewing angle; Figure 3 Flow chart of a control method of an intelligent circulating water pump of the present invention; specifically, the present invention provides an intelligent circulating water pump, characterized in that it includes:

[0050] A pump body 1, wherein one end of the pump body 1 is provided with a water inlet 101, and the other end is provided with a water outlet 102, for extracting water flow and outputting the water flow to the air energy pipeline;

[0051] A motor 2, wherein the motor 2 is arranged on the top of the pump body 1 and is used to adjust the output pressure and output flow of the pump body 1;

[0052] A one-way booster 3, which is connected to the pump body 1, and is used to make the water flow unidirectionally output to the pipeline and increase the water pressure in the pipeline;

[0053] A replenishing unit connected to the one-way booster 3, comprising a kettle body 401 connected to the pump body 1 for storing replenishing liquid, a water outlet valve 402 arranged near the bottom side of the kettle body 401 and connected to the one-way booster 3 through a hose 5, and a low liquid level one-way protection valve 403 arranged near one side of the water outlet valve 402 for identifying the liquid level information of the replenishing liquid in the kettle body 401 and opening and closing the water outlet valve, wherein the top of the kettle body 401 is provided with a liquid injection port 404 for injecting replenishing liquid and an anti-volatile one-way valve 405 arranged at the liquid injection port 404 for one-way passage of the replenishing liquid;

[0054] A detection unit 6, which is connected to the pump body 1 and the supplementary unit, respectively, and is used to detect the pressure data and temperature data of the water flow in the pipeline at several time points, and to detect the water level data of the supplementary liquid in the supplementary unit and the flow rate of the water outlet 102;

[0055] The control unit 7 is connected to the detection unit 6, the supplementary unit and the pump body 1 respectively. The control unit 7 includes a pressure upper and lower limit trigger unit and a water temperature upper and lower limit trigger unit. The pressure upper and lower limit trigger unit is used to adjust the pressure and alarm according to the comparison result between the current pressure data in the air energy pipeline and the preset pressure threshold value. The water temperature upper and lower limit trigger unit is used to alarm according to the comparison result between the current temperature data in the air energy pipeline and the preset temperature threshold value.

[0056] In a specific embodiment, the motor 2 may be a permanent magnet motor 2, the detection unit 6 may be a temperature and pressure integrated sensor and a water level gauge, and the control unit 7 may be a frequency conversion controller having a control panel. The type of the motor 2, the detection unit 6, and the type of equipment involved in the control unit 7 may be determined according to actual conditions, and are not specifically limited here and will not be described in detail.

[0057] In a specific embodiment, the smart circulating water pump also has a Bluetooth function, through which the product is activated. An inactivated smart circulating water pump will automatically shut down after running continuously for 6 hours, and no activation is required for trial operation or intermittent use. In addition, two smart circulating water pumps can communicate in parallel via Bluetooth. If one of the water pumps fails, it will automatically switch to the other water pump without failure, ensuring zero downtime for system operation.

[0058] In a specific embodiment, pressure adjustment and temperature and pressure over-limit alarm processing are performed by the upper and lower pressure limit triggering unit and the upper and lower water temperature limit triggering unit. The preset pressure threshold is the pressure of the air energy pipeline of the intelligent circulating water pump in the pressure balance state, and the preset temperature threshold is the water temperature of the air energy pipeline of the intelligent circulating water pump in the pressure balance state. When the pressure data is lower than the preset pressure threshold by 20%, the system alarms and automatically turns on the output power supply (220V) power (100w) until the system preset pressure threshold or exceeds the preset pressure threshold by 10% and then turns off the power. The output mode of the output power supply power can be continuous or intermittent. When the temperature data is lower than or higher than the preset temperature threshold, the duration exceeds 20s and the intelligent circulating water pump stops working and alarms. In implementation, the range and preferred value of the preset pressure threshold can also be determined according to the pressure in the air energy pipeline after the intelligent circulating water pump has been running for 6 hours, and the preset pressure threshold can also be automatically determined according to the bottom pressure of the air energy pipeline of the intelligent circulating water pump, the pipeline scene, and the working resistance of the intelligent circulating pump. It is not specifically limited here and will not be repeated. The value range and preferred value of the preset temperature threshold can also be determined according to actual conditions, and are not specifically limited here and will not be elaborated on.

[0059] The control unit in the present invention is provided with a pressure upper and lower limit trigger unit and a water temperature upper and lower limit trigger unit to monitor and alarm the pressure and temperature in the air energy pipeline, effectively monitor the system pressure in the air energy pipeline, ensure the internal pressure stability of the air energy pipeline system, and ensure the operation stability of the air energy pipeline system.

[0060] Specifically, the control unit 7 determines a pressure stabilization stage according to the pressure data and a preset pressure threshold, and determines a first pressure characteristic of the water flow pressure in the pipeline according to the pressure data corresponding to the pressure stabilization stage.

[0061] In a specific embodiment, if the pressure data is less than or equal to the preset pressure threshold, the time point corresponding to the pressure data is the pressure stabilization time point, and the pressure stabilization stage can be determined according to the pressure stabilization time point and the duration. If the duration of the pressure data after the pressure stabilization time point being less than or equal to the preset pressure threshold is greater than 20 minutes to 30 minutes, this time period is the pressure stabilization time period. In implementation, the value range of the pressure stabilization time period can be determined according to actual conditions, and is not specifically limited here and will not be repeated.

[0062] In implementation, the value range of the preset pressure threshold is 1.5MPa to 1.8MPa, and the preferred value is 1.56MPa. The value range and preferred value of the preset pressure threshold can be determined according to actual conditions and will not be repeated here.

[0063] In a specific embodiment, the first pressure characteristic may be a pressure fluctuation range. When the first pressure characteristic is a pressure fluctuation range, the pressure fluctuation range is determined according to the maximum and minimum values ​​of the pressure data in the pressure stabilization stage. The first pressure characteristic may also be a pressure fluctuation coefficient or a pressure change rate, etc. The value range of the first pressure characteristic value may be determined according to actual conditions, which will not be described in detail here.

[0064] Specifically, the control unit 7 determines the pressure fluctuation stage according to the pressure data and a preset pressure threshold, and determines the second pressure characteristic of the water flow pressure in the pipeline according to the pressure data corresponding to the pressure fluctuation stage.

[0065] In a specific embodiment, if the pressure data is greater than a preset pressure threshold, the time point corresponding to the pressure data is a pressure fluctuation time point, and the pressure stabilization stage can be determined according to the pressure fluctuation time point and duration. If the duration of the pressure data after the pressure fluctuation time point being greater than the preset pressure threshold is greater than 20 minutes to 30 minutes, this time period is a pressure fluctuation time period. In implementation, the value range of the pressure fluctuation time period can be determined according to actual conditions, and is not specifically limited here and will not be repeated.

[0066] In a specific embodiment, the second pressure characteristic may be a pressure fluctuation range. When the second pressure characteristic is a pressure fluctuation range, the pressure fluctuation range is determined according to the maximum and minimum values ​​of the pressure data in the pressure fluctuation stage. The second pressure characteristic may also be a pressure fluctuation coefficient or a pressure change rate, etc. The value range of the second pressure characteristic value may be determined according to actual conditions, which will not be described in detail here.

[0067] See also Figure 3 As shown, Figure 3 The flow chart of determining the influence degree of temperature on pressure of the intelligent circulating water pump of the present invention; specifically, it includes:

[0068] The control unit 7 determines a first degree of influence of temperature on water pressure according to the first pressure characteristic and the temperature data in the pressure stabilization stage;

[0069] determining a second degree of influence of temperature on water pressure according to the second pressure characteristic and the temperature data of the pressure fluctuation stage;

[0070] and determining a third influence degree of temperature on water pressure according to the first influence degree and the second influence degree;

[0071] The degree of influence is calculated based on the temperature data and pressure data during the pressure stability stage and the pressure fluctuation stage.

[0072] It can be understood that in the pressure stability stage, the temperature has a smaller effect on the pressure, and in the pressure fluctuation stage, the temperature has a greater effect on the pressure.

[0073] In a specific embodiment, the temperature fluctuation degree is determined according to the temperature data in the pressure stabilization stage, and the first influence degree of temperature on water pressure is determined according to the first pressure feature and the temperature fluctuation degree, and the temperature fluctuation degree is the difference between the maximum value and the minimum value of the temperature data in the pressure stabilization stage. A temperature-pressure influence relationship curve can be constructed according to the pressure data and temperature data in the pressure stabilization stage, and the temperature fluctuation degree and the first pressure feature are substituted into the temperature-pressure curve to determine the first influence degree of temperature on water pressure. The temperature fluctuation degree is determined according to the temperature data in the pressure fluctuation stage, and the second influence degree of temperature on water pressure is determined according to the second pressure feature and the temperature fluctuation degree, and the temperature fluctuation degree is the difference between the maximum value and the minimum value of the temperature data in the pressure fluctuation stage. A temperature-pressure influence relationship curve can be constructed according to the pressure data and temperature data in the pressure fluctuation stage, and the temperature fluctuation degree and the second pressure feature are substituted into the temperature-pressure curve to determine the second influence degree of temperature on water pressure. The third influence degree of temperature on water pressure is the sum of the product of the first influence degree and the first weight and the product of the second influence degree and the second weight. The first weight is less than the second weight, and the sum of the first weight and the second weight is 1. Preferably, the first weight is 0.2 and the second weight is 0.8. In implementation, the value ranges of the first impact degree, the second impact degree, and the third impact degree can be determined according to actual conditions, and are not specifically limited here and will not be repeated.

[0074] The present invention determines a first degree of influence according to the first pressure characteristic and the pressure stabilization stage, and determines a second degree of influence according to the second pressure characteristic and the pressure fluctuation stage, and determines a third degree of influence of temperature on water pressure according to the first degree of influence and the second degree of influence, thereby further effectively balancing the pressure in the air energy pipeline system, ensuring the internal pressure stability of the air energy pipeline system, and ensuring the operating stability of the air energy pipeline system.

[0075] Specifically, the control unit 7 determines the pressure drop timing according to the water pressure characteristics and / or the third influence degree, and determines the pressure drop degree according to the pressure data detected after the pressure drop timing;

[0076] Wherein, if the second pressure characteristic is greater than the preset second pressure characteristic, the corresponding time point when the second pressure characteristic is greater than the preset second pressure characteristic is the pressure drop timing;

[0077] If the impact degree exceeds the preset impact degree, the corresponding time point when the impact degree exceeds the preset impact degree is the pressure drop timing.

[0078] It is understandable that when the water temperature in the air energy pipeline increases or decreases, the volume of the air energy pipeline will change, and this change in volume will directly affect the pressure in the pipeline.

[0079] In implementation, preferably, the value of the preset second pressure characteristic is the average value of the second pressure characteristics under several pressure fluctuation stages, and the value range of the preset influence degree is 0.3 to 0.5, and preferably, the value of the preset influence degree is 0.35. The value range and preferred value of the preset second pressure characteristic and the preset influence degree can be determined according to actual conditions, and are not specifically limited here, and will not be repeated.

[0080] In implementation, the pressure drop degree is the difference between a preset pressure threshold and the pressure data after the pressure drop timing. The value range of the pressure drop degree can be determined according to actual conditions and is not specifically limited here and will not be repeated.

[0081] The present invention determines the timing of pressure drop according to the water pressure characteristics and / or the third influence degree, and replenishes the air energy pipeline at the timing of pressure drop, thereby further effectively balancing the pressure in the air energy pipeline system, ensuring the internal pressure stability of the air energy pipeline system, and ensuring the operating stability of the air energy pipeline system.

[0082] Specifically, the control unit 7 determines the liquid replenishing method of the replenishing unit according to the pressure drop degree at the pressure drop timing;

[0083] Wherein, if the pressure drop does not exceed the preset first level, the replenishing unit performs slow liquid injection / intermittent liquid injection;

[0084] If the pressure drop exceeds a preset first level, the replenishment unit performs rapid injection / continuous injection.

[0085] In implementation, the preset first degree is the average of the difference between the maximum pressure data and the minimum pressure data in several pressure stabilization stages. The value range and preferred value of the preset first degree can be determined according to actual conditions, and no specific limitation is made here and no further explanation is given.

[0086] The present invention determines the pressure change amplitude according to the pressure data after the pressure drop opportunity, and determines the pressure drop degree according to the pressure change amplitude and the influence degree. At the pressure drop opportunity, the liquid replenishment method of the replenishment unit is determined according to the pressure drop degree, further ensuring the internal pressure stability of the air energy pipeline system and ensuring the operation stability of the air energy pipeline system.

[0087] Specifically, the control unit 7 determines the first injection speed of the replenishment unit according to the pressure drop degree and the pipeline volume under slow injection conditions, or determines the injection interval time of the replenishment unit according to the pressure drop degree and the preset injection speed under intermittent injection conditions.

[0088] In a specific embodiment, the first injection speed is the ratio of the product of the pressure drop and the liquid compressibility coefficient to the product of the liquid density and the injection time. The liquid compressibility coefficient represents the volume change rate of the supplementary liquid under pressure changes and pipeline volume; the injection time is the time required to achieve pressure balance in the pipeline by injecting at the first injection speed under slow injection conditions. The injection interval time is the ratio of the product of the pressure drop and the liquid compressibility coefficient to the product of the preset injection speed and the liquid density. The preset injection speed is 0.02 to 0.05 L / s. In implementation, the value ranges of the preset injection speed, the first injection speed and the injection interval time can be determined according to actual conditions, and are not specifically limited here and will not be repeated.

[0089] Specifically, the control unit 7 determines the second injection speed of the replenishment unit according to the pressure drop degree and the pipeline volume under the condition of rapid injection, or determines the injection amount of the replenishment unit according to the pressure recovery degree under the condition of continuous injection.

[0090] In a specific embodiment, the second injection speed calculation formula is the ratio of the first injection speed to the product of the pressure drop degree and the liquid compressibility coefficient and the product of the liquid density and the injection time. The injection time is the time required for the pressure balance in the pipeline to be achieved by injecting at the second injection speed under the condition of rapid injection. The liquid compressibility coefficient represents the volume change rate of the supplementary liquid under pressure change and pipeline volume; the injection volume calculation formula is the ratio of the pressure recovery degree to the total injection volume, the product of the liquid compressibility coefficient and the liquid density. The pressure recovery degree is the amount of pressure recovery in the pipeline after injection under continuous injection. The value range of the second injection speed and the injection volume can be determined according to the actual situation, and is not specifically limited here and will not be repeated.

[0091] Under the corresponding rehydration mode, the present invention determines the injection speed, injection interval time and injection amount of the replenishing unit into the pump body 1 according to the pressure drop degree and the pipeline volume, thereby further ensuring that the amount of replenishing liquid in the rehydration pot is always sufficient, thereby further effectively balancing the pressure in the air energy pipeline system, ensuring the internal pressure stability of the air energy pipeline system, and ensuring the operating stability of the air energy pipeline system.

[0092] Specifically, the control unit 7 compares the flow rate of the water outlet 102 with a preset flow rate, and determines the timing of the liquid replenishment according to the comparison result, or determines the timing of the liquid replenishment according to the water level data and a preset water level.

[0093] Specifically, if the flow rate of the water outlet 102 is less than the preset flow rate, there is no need to inject the supplementary liquid into the kettle body 401;

[0094] If the flow rate of the water outlet 102 is greater than the preset flow rate, replenishing liquid is injected into the kettle body 401.

[0095] Specifically, if the water level data is greater than the preset water level, there is no need to inject supplementary liquid into the kettle body 401;

[0096] If the water level data is less than or equal to the preset water level, replenishing liquid is injected into the kettle body 401 .

[0097] In practice, a water level meter is provided inside the kettle body 401 to collect water level data inside the kettle body 401. The preset flow rate is 0.02 to 0.05 L / (s·m 2), preferably, the preset flow rate is 0.3 L / (s·m 2 ). The value range of the preset water level is 1 / 7 to 1 / 5 of the height of the kettle body 401. Preferably, the value range of the preset water level is 1 / 6 of the height of the kettle body 401. The value range and preferred value of the preset water level can be determined according to actual conditions, and will not be repeated here.

[0098] The present invention determines the timing of refilling according to the comparison result between the flow rate of the water outlet 102 and the preset flow rate, or determines the timing of refilling according to the water level data and the preset water level, to ensure that the amount of replenishing liquid in the refilling pot is always sufficient, thereby further effectively balancing the pressure in the air energy pipeline system, ensuring the stability of the internal pressure of the air energy pipeline system, and ensuring the operational stability of the air energy pipeline system.

[0099] See also Figure 4 As shown, Figure 4 Flow chart of a control method of an intelligent circulating water pump of the present invention. Specifically, the present invention provides a control method of an intelligent circulating water pump, comprising:

[0100] Step S1, obtaining pressure data and temperature data of water flow in the pipeline of the intelligent circulating water pump, and comparing the pressure data and temperature data with corresponding thresholds to determine whether to trigger pressure adjustment and / or alarm;

[0101] Step S2, determining a water pressure characteristic according to the pressure data, and determining a third degree of influence of temperature on water pressure according to the temperature data and the water pressure characteristic, wherein the water pressure characteristic includes a first pressure characteristic and a second pressure characteristic;

[0102] Step S3, predicting a pressure drop timing according to the water pressure characteristics and / or the third impact degree;

[0103] Step S4, determining the degree of pressure drop according to the predicted pressure drop timing, the pressure data of the water flow in the current pipeline and the third influence degree;

[0104] Step S5, selecting a fluid replenishment method of the replenishment unit based on the predicted pressure drop timing and pressure drop degree, including a first fluid replenishment method and a second fluid replenishment method, wherein the first fluid replenishment method is slow fluid injection and / or intermittent fluid injection, and the second fluid replenishment method is fast fluid injection and / or continuous fluid injection;

[0105] Step S6, monitoring the water outlet flow and / or water level data in the kettle body of the replenishment unit of the intelligent circulating water pump, and determining the time and amount of water replenishment of the kettle body according to the water outlet flow and / or water level data.

[0106] The intelligent circulating water pump in the present invention can determine the third degree of influence of temperature on water pressure according to temperature data and water pressure characteristics, determine the timing of pressure drop according to the water pressure characteristics and / or the third degree of influence, determine the degree of pressure drop according to the timing of pressure drop, pressure data and the degree of influence, and determine the replenishment method and timing of replenishment of the replenishment unit according to the timing of pressure drop and the degree of pressure drop, effectively balancing the pressure in the air energy pipeline system, ensuring the internal pressure stability of the air energy pipeline system, and ensuring the operating stability of the air energy pipeline system.

[0107] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An intelligent circulating water pump, characterized in that: include: A pump body, wherein one end of the pump body is provided with a water inlet, and the other end of the pump body is provided with a water outlet, for extracting water flow and outputting the water flow into the air energy pipeline; A motor, which is arranged on the top of the pump body and is used to adjust the output pressure and output flow of the pump body; A one-way booster connected to the pump body to output water to the pipeline in one direction and increase the water pressure in the pipeline; A replenishing unit connected to the one-way booster comprises a kettle body connected to the pump body for storing replenishing liquid, a water outlet valve arranged near the bottom side of the kettle body and connected to the one-way booster through a hose, and a low liquid level one-way protection valve arranged near one side of the water outlet valve for identifying the liquid level information of the replenishing liquid in the kettle body and opening and closing the water outlet valve, wherein the top of the kettle body is provided with a liquid injection port for injecting replenishing liquid and an anti-volatile one-way valve arranged at the liquid injection port for one-way passage of replenishing liquid; A detection unit, which is connected to the pump body and the supplementary unit respectively, and is used to detect the pressure data and temperature data of the water flow in the pipeline at several time points, and to detect the water level data of the supplementary liquid in the supplementary unit and the outlet flow rate; A control unit is connected to the detection unit, the supplementary unit and the pump body respectively. The control unit includes a pressure upper and lower limit trigger unit and a water temperature upper and lower limit trigger unit. The pressure upper and lower limit trigger unit is used to adjust the pressure and alarm according to the comparison result between the current pressure data in the air energy pipeline and the preset pressure threshold value. The water temperature upper and lower limit trigger unit is used to alarm according to the comparison result between the current temperature data in the air energy pipeline and the preset temperature threshold value.

2. The intelligent circulating water pump according to claim 1, characterized in that: The control unit is further used to determine the water pressure characteristics according to the pressure data, determine the third degree of influence of temperature on the water pressure according to the temperature data and the water pressure characteristics, determine the pressure drop timing according to the water pressure characteristics and / or the third degree of influence, and determine the pressure drop degree according to the pressure drop timing, the pressure data and the degree of influence, and determine the liquid replenishment method of the replenishment unit according to the pressure drop timing and the pressure drop degree. The control unit is also used to determine the liquid replenishment timing of the kettle body according to the water outlet flow or water level data; Wherein, the water pressure characteristic includes a first pressure characteristic and a second pressure characteristic.

3. The intelligent circulating water pump according to claim 2, characterized in that: The control unit determines a pressure stabilization stage according to the pressure data and a preset pressure threshold, and determines a first pressure characteristic of the water flow pressure in the pipeline according to the pressure data corresponding to the pressure stabilization stage; The control unit determines a pressure fluctuation stage according to the pressure data and a preset pressure threshold, and determines a second pressure characteristic of the water flow pressure in the pipeline according to the pressure data corresponding to the pressure fluctuation stage.

4. The intelligent circulating water pump according to claim 3 is characterized in that: The control unit determines a first degree of influence of temperature on water pressure according to the first pressure characteristic and the temperature data in the pressure stable stage, determines a second degree of influence of temperature on water pressure according to the second pressure characteristic and the temperature data in the pressure fluctuation stage, and determines a third degree of influence of temperature on water pressure according to the first degree of influence and the second degree of influence; The degree of influence is calculated based on the temperature data and pressure data during the pressure stability stage and the pressure fluctuation stage.

5. The intelligent circulating water pump according to claim 4, characterized in that: The control unit determines the pressure drop timing according to the water pressure characteristics and / or the third influence degree, and determines the pressure drop degree according to the pressure data detected after the pressure drop timing; Wherein, if the second pressure characteristic is greater than the preset second pressure characteristic, the corresponding time point when the second pressure characteristic is greater than the preset second pressure characteristic is the pressure drop timing; If the impact degree exceeds the preset impact degree, the corresponding time point when the impact degree exceeds the preset impact degree is the pressure drop timing.

6. The intelligent circulating water pump according to claim 5, characterized in that: The control unit determines the liquid replenishing method of the replenishing unit according to the pressure drop degree when the pressure drops; Wherein, if the pressure drop does not exceed the preset first level, the replenishing unit performs slow liquid injection / intermittent liquid injection; If the pressure drop exceeds a preset first level, the replenishment unit performs rapid injection / continuous injection.

7. The intelligent circulating water pump according to claim 6, characterized in that: The control unit determines the first injection speed of the replenishment unit according to the pressure drop degree and the pipeline volume under the slow injection condition, or determines the injection interval time of the replenishment unit according to the pressure drop degree and the preset injection speed under the intermittent injection condition.

8. The intelligent circulating water pump according to claim 7, characterized in that: The control unit determines the second injection speed of the replenishment unit according to the pressure drop degree and the pipeline volume under the condition of rapid injection, or determines the injection amount of the replenishment unit according to the pressure recovery degree under the condition of continuous injection.

9. The intelligent circulating water pump according to claim 2, characterized in that: The control unit compares the water outlet flow rate with a preset flow rate, and determines the liquid replenishment timing according to the comparison result, or determines the liquid replenishment timing according to the water level data and a preset water level.

10. A control method for an intelligent circulating water pump, applied to the intelligent circulating water pump according to any one of claims 1 to 9, characterized in that: include: Step S1, obtaining pressure data and temperature data of water flow in the pipeline of the intelligent circulating water pump, and comparing the pressure data and temperature data with corresponding thresholds to determine whether to trigger pressure adjustment and / or alarm; Step S2, determining a water pressure characteristic according to the pressure data, and determining a third degree of influence of temperature on water pressure according to the temperature data and the water pressure characteristic, wherein the water pressure characteristic includes a first pressure characteristic and a second pressure characteristic; Step S3, predicting a pressure drop timing according to the water pressure characteristics and / or the third impact degree; Step S4, determining the degree of pressure drop according to the predicted pressure drop timing, the pressure data of the water flow in the current pipeline and the third influence degree; Step S5, selecting a fluid replenishment method of the replenishment unit based on the predicted pressure drop timing and pressure drop degree, including a first fluid replenishment method and a second fluid replenishment method, wherein the first fluid replenishment method is slow fluid injection and / or intermittent fluid injection, and the second fluid replenishment method is fast fluid injection and / or continuous fluid injection; Step S6, monitoring the water outlet flow and / or water level data in the kettle body of the replenishment unit of the intelligent circulating water pump, and determining the time and amount of water replenishment of the kettle body according to the water outlet flow and / or water level data.

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