Energy-saving control device of water system

Abstract

The utility model discloses an energy-saving control device of a water system, which relates to the technical field of energy-saving control structures and comprises a pump component, a pressure gauge component, a circulating water tank, a branch pipeline unit, a user side unit, a pipeline pump component, a check valve component and a thermometer component, one end of the pump component is connected with the circulating water tank, and the other end of the pump component is connected with the branch pipeline unit; the pump assembly comprises first and second circulating water pumps and first, second and third standby water pumps; the branch pipeline unit comprises a first branch pipeline and a second branch pipeline. The user side unit comprises a first terminal user side device and a second terminal user side device. The pressure gauge assembly comprises first, second and third pressure gauges; the pipeline pump assembly comprises a first variable-frequency pipeline pump and a second variable-frequency pipeline pump. The check valve assembly comprises a first check valve and a second check valve; the thermometer assembly comprises a first thermometer and a second thermometer. The layout mode that the first frequency conversion pipeline pump and the second frequency conversion pipeline pump which are small in power are distributed in a scattered mode is adopted, and energy conservation and consumption reduction are achieved to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field of energy-saving control structures, in particular to an energy-saving control device for a water system. Background Art

[0002] Circulating water systems are widely used in various fields. In chemical, petrochemical, electric power and other industrial production fields, they are mainly used for circulating cooling water; in the field of construction engineering, they are mainly used for heating and cooling systems inside buildings; in the field of municipal construction, they are mainly used for water quality stabilization control of urban water supply systems and energy-saving regulation of water pressure systems. At present, there are 5 high-power circulating water pumps in the commonly used public engineering circulating water system. During normal production and operation, three circulating water pumps are in operation and two are in standby. When the water consumption of downstream users is small, the three running pumps are switched to two pumps. However, when the three pumps are running, the motor load is low, resulting in a decrease in motor energy efficiency, and the two pumps are running with insufficient water, which cannot directly solve the problem of energy waste. Utility Model Content

[0003] In order to solve the existing problems of serious energy waste, reduced motor energy efficiency, etc., the utility model provides an energy-saving control device for a water system.

[0004] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0005] An energy-saving control device for a water system comprises a pump assembly, a pressure gauge assembly, a circulating water pool, a branch pipeline unit, a user end unit, a pipeline pump assembly, a check valve assembly and a temperature gauge assembly, wherein one end of the pump assembly is connected to the circulating water pool through a pipeline, and the other end of the pump assembly is connected to the branch pipeline unit through a main pipeline; the pump assembly comprises a first circulating water pump, a second circulating water pump, a first standby water pump, a second standby water pump and a third standby water pump; the branch pipeline unit comprises a first branch pipeline and a second branch pipeline, the user end unit comprises a first end user end device and a second end user end device, and a first branch pipeline is provided with a first The end user terminal equipment is provided on the second branch pipeline; the pressure gauge assembly includes a first pressure gauge, a second pressure gauge and a third pressure gauge; the pipeline pump assembly includes a first variable frequency pipeline pump and a second variable frequency pipeline pump; wherein the first pressure gauge is arranged on the main pipeline; the second pressure gauge and the first variable frequency pipeline pump are arranged on the first branch pipeline, and the second pressure gauge monitors the pressure parameters of the first variable frequency pipeline pump; the third pressure gauge and the second variable frequency pipeline pump are arranged on the second branch pipeline, and the third pressure gauge monitors the pressure parameters of the second variable frequency pipeline pump; the check valve assembly includes a first check valve and a second check valve, One end of the first check valve is connected to the input end of the first variable frequency pipeline pump, and the other end of the first check valve is connected to the output end of the first variable frequency pipeline pump. The first check valve is set to prevent the circulating water from flowing back when the first variable frequency pipeline pump is running; under normal circumstances, the circulating water is supplied to the first end user equipment through the first check valve. When the pressure of the second pressure gauge is lower than the set value, the first variable frequency pipeline pump starts to adjust according to the second pressure parameter. At this time, the check valve is closed to prevent the first variable frequency pipeline pump from flowing back and working ineffectively; one end of the second check valve is connected to the input end of the second variable frequency pipeline pump, and the second check valve is connected to the input end of the second variable frequency pipeline pump. The other end of the second check valve is connected to the output end of the second variable frequency pipeline pump. The second check valve prevents the circulating water from flowing back when the first variable frequency pipeline pump is running. Under normal circumstances, the circulating water is supplied to the second end user terminal device through the second check valve. When the pressure of the third pressure gauge is lower than the set value, the second variable frequency pipeline pump starts to adjust according to the third pressure parameter. At this time, the check valve is closed to prevent the second variable frequency pipeline pump from flowing back and working ineffectively. The temperature meter assembly includes a first temperature meter and a second temperature meter. The first temperature meter is arranged on the first end user terminal device, and the second temperature meter is arranged on the second end user terminal device.

[0006] Based on the above technical solution, further, it also includes a regulating valve assembly, which is installed on the branch pipeline unit.

[0007] Based on the above technical solution, further, the branch pipeline unit also includes a third branch pipeline, the user end unit also includes a third end user end device, the regulating valve assembly includes a first regulating valve, the temperature meter assembly includes a third temperature meter, the first regulating valve and the third end user end device are both arranged on the third branch pipeline, and the third end user end device is provided with a third temperature meter.

[0008] Based on the above technical solution, further, the branch pipeline unit also includes a fourth branch pipeline, the user end unit also includes a fourth end user end device, the regulating valve assembly includes a second regulating valve, the temperature meter assembly includes a fourth temperature meter, the second regulating valve and the fourth end user end device are both arranged on the fourth branch pipeline, and the fourth end user end device is provided with a fourth temperature meter.

[0009] Based on the above technical solution, further, the branch pipeline unit also includes a fifth branch pipeline, the user-end unit also includes a fifth end user-end device, the regulating valve assembly includes a third regulating valve, the temperature meter assembly includes a fifth temperature meter, the third regulating valve and the fifth end user-end device are both arranged on the fifth branch pipeline, and the fifth end user-end device is provided with a fifth temperature meter.

[0010] Based on the above technical solution, further, all output ends of the first branch pipeline, the second branch pipeline, the third branch pipeline, the fourth branch pipeline and the fifth branch pipeline are connected to the circulating water pool.

[0011] Based on the above technical solution, further, the power range of the first variable frequency pipeline pump and the second variable frequency pipeline pump are both 0.75kw-110kw.

[0012] Compared with the prior art, the beneficial effects of the present invention are specifically embodied in:

[0013] The utility model reduces the number of high-power equipment running at the source of the existing system, and adopts a layout method of dispersing the first variable frequency pipeline pump and the second variable frequency pipeline pump of a certain power, which improves equipment efficiency and achieves maximum energy saving and consumption reduction on the basis of ensuring production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the energy-saving control device of the utility model;

[0015] Figure numerals: 1. first pressure gauge; 2. second pressure gauge; 3. third pressure gauge; 4. first branch pipeline; 5. second branch pipeline; 6. third branch pipeline; 7. fourth branch pipeline; 8. fifth branch pipeline; 9. first variable frequency pipeline pump; 10. second variable frequency pipeline pump; 11. first check valve; 12. second check valve; 13. first regulating valve; 14. first thermometer; 15. first circulating water pump; 16. second circulating water pump; 17. first standby water pump; 18. second standby water pump; 19. third standby water pump. DETAILED DESCRIPTION

[0016] The present invention is further described and illustrated below in conjunction with the accompanying drawings and specific implementations. The technical features of each implementation of the present invention can be combined accordingly without conflicting with each other.

[0017] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed below. The technical features in each embodiment of the utility model can be combined accordingly without conflicting with each other.

[0018] In the description of the present utility model, it is necessary to understand that when an element is considered to be "connected" to another element, it can be directly connected to another element or indirectly connected, that is, there are intermediate elements. On the contrary, when an element is said to be "directly" connected to another element, there are no intermediate elements.

[0019] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0020] Example

[0021] like Figure 1The energy-saving control device of a water system shown in the figure includes a pump assembly, a pressure gauge assembly, a circulating water tank, a branch pipeline unit, a user end unit, a pipeline pump assembly, a check valve assembly and a temperature gauge assembly. One end of the pump assembly is connected to the circulating water tank through a pipeline, and the other end of the pump assembly is connected to the branch pipeline unit through a main pipeline; the pump assembly includes a first circulating water pump 15, a second circulating water pump 16, a first standby water pump 17, a second standby water pump 18 and a third standby water pump 19; the branch pipeline unit includes a first branch pipeline 4 and a second branch pipeline 5, and the user end unit includes a first end user end device and a second end user end device. The first branch pipeline 4 is provided with a first end user end device, and the second branch pipeline 5 is provided with a first end user end device. A second end user terminal device is provided on the two-branch pipeline 5; the pressure gauge assembly includes a first pressure gauge 1, a second pressure gauge 2 and a third pressure gauge 3; the pipeline pump assembly includes a first variable frequency pipeline pump 9 and a second variable frequency pipeline pump 10; wherein the first pressure gauge 1 is provided on the main pipeline for detecting the pressure data on the main pipeline; the second pressure gauge 2 and the first variable frequency pipeline pump 9 are provided on the first branch pipeline 4, and the second pressure gauge 2 monitors the pressure parameters of the first variable frequency pipeline pump 9; the third pressure gauge 3 and the second variable frequency pipeline pump 10 are provided on the second branch pipeline 5, and the third pressure gauge 3 monitors the pressure parameters of the second variable frequency pipeline pump 10; the check valve assembly includes a first check valve 11 and a second check valve Valve 12, one end of the first check valve 11 is connected to the input end of the first variable frequency pipeline pump 9, and the other end of the first check valve 11 is connected to the output end of the first variable frequency pipeline pump 9. The first check valve 11 prevents the circulating water from flowing back when the first variable frequency pipeline pump 9 is running. Under normal circumstances, the circulating water is supplied to the first end user equipment through the first check valve 11. When the pressure of the second pressure gauge 2 is lower than the set value, the first variable frequency pipeline pump 9 starts to adjust according to the pressure parameters of the second pressure gauge 2. At this time, the first check valve 11 is closed to prevent the first variable frequency pipeline pump 9 from flowing back and working ineffectively; one end of the second check valve 12 is connected to the input end of the second variable frequency pipeline pump 10, and the second check valve 12 is connected to the input end of the second variable frequency pipeline pump 10. The other end of the second check valve 12 is connected to the output end of the second variable frequency pipeline pump 10. The second check valve 12 prevents the circulating water from flowing back when the second variable frequency pipeline pump 10 is running. Under normal circumstances, the circulating water is supplied to the second end user terminal device through the second check valve 12. When the pressure of the third pressure gauge 3 is lower than the set value, the second variable frequency pipeline pump 10 starts to adjust according to the pressure parameters of the third pressure gauge 3. At this time, the second check valve 12 is closed to prevent the second variable frequency pipeline pump 10 from flowing back and working ineffectively; the temperature meter component includes a first temperature meter 14 and a second temperature meter. The first temperature meter 14 is arranged on the first end user terminal device, and the second temperature meter is arranged on the second end user terminal device.

[0022] Furthermore, it also includes a regulating valve assembly, which is installed on the branch pipeline unit. Specifically, the branch pipeline unit also includes a third branch pipeline 6, the user end unit also includes a third end user end device, the regulating valve assembly includes a first regulating valve 13, the temperature meter assembly includes a third temperature meter, the first regulating valve 13 and the third end user end device are both arranged on the third branch pipeline 6, and the third end user end device is provided with a third temperature meter, wherein the first regulating valve 13 controls the temperature parameter of the third end user end device. The branch pipeline unit also includes a fourth branch pipeline 7, the user end unit also includes a fourth end user end device, the regulating valve assembly includes a second regulating valve, the temperature meter assembly includes a fourth temperature meter, the second regulating valve and the fourth end user end device are both arranged on the fourth branch pipeline 7, and the fourth end user end device is provided with a fourth temperature meter, wherein the second regulating valve controls the temperature parameter of the fourth end user end device. The branch pipeline unit also includes a fifth branch pipeline 8, the user end unit also includes a fifth end user end device, the regulating valve assembly includes a third regulating valve, the temperature gauge assembly includes a fifth temperature gauge, the third regulating valve and the fifth end user end device are both arranged on the fifth branch pipeline 8, and the fifth end user end device is provided with a fifth temperature gauge, wherein the third regulating valve controls the temperature parameters of the fifth end user end device. All output ends of the first branch pipeline 4, the second branch pipeline 5, the third branch pipeline 6, the fourth branch pipeline 7 and the fifth branch pipeline 8 are connected to the circulating water pool. The power range of the first variable frequency pipeline pump 9 and the second variable frequency pipeline pump 10 are both 0.75kw-110kw, preferably a low-power pipeline pump of 0.75-30kw. Among them, the number of the regulating valve assembly, the pressure gauge assembly, the temperature gauge assembly, the pump assembly, the user end unit, etc. is set according to the actual situation. The device adopts a layout mode of dispersing a first variable frequency pipeline pump 9 and a second variable frequency pipeline pump 10 of a certain power, and at the same time, a regulating valve and a temperature meter are added to a single device to realize a control loop, so as to avoid overcooling of the process medium, reduce the waste of circulating water, and realize maximum energy saving and consumption reduction.

[0023] The specific implementation process is:

[0024] Detect the water pipeline pressure of the first end-user terminal device and the second end-user terminal device downstream. If the production demand is met, keep the system water pump running at low load and low quantity. When the water pipeline pressure of the first end-user terminal device and the second end-user terminal device downstream is lower than the preset value, start the first variable frequency pipeline pump 9 and the first variable frequency pipeline pump 9 of the corresponding pipeline, and adjust the motor frequency in real time according to the pressure; when the motor frequency is maintained at the low load preset value and the pressure is higher than the preset value, turn off the first variable frequency pipeline pump 9 or the second variable frequency pipeline pump 10; when the motor frequency of the first variable frequency pipeline pump 9 or the second variable frequency pipeline pump 10 of the water pipeline of the first end-user terminal device and the second end-user terminal device downstream has been adjusted to the maximum and still cannot meet the pressure demand, start the first standby water pump 17, the second standby water pump 18 and the third standby water pump 19. The second pressure gauge 2 downstream forms a control loop with the first variable frequency pipeline pump 9. When the pressure is lower than the set value, start the first variable frequency pipeline pump 9 and track the pressure value to adjust the motor frequency. The third pressure gauge 3 downstream forms a control loop with the second variable frequency pipeline pump 10. When the pressure is lower than the set value, the second variable frequency pipeline pump 10 is started, and the pressure value is tracked to adjust the motor frequency. Among them, each control loop adopts a deactivation logic, that is, the start and stop actions are controlled by an external control system, such as a computer or other control device. The specific control logic is a conventional means and will not be described in detail.

[0025] The above is only an implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. An energy-saving control device for a water system, characterized in that: It includes a pump assembly, a pressure gauge assembly, a circulating water pool, a branch pipeline unit, a user end unit, a pipeline pump assembly, a check valve assembly and a temperature gauge assembly. One end of the pump assembly is connected to the circulating water pool through a pipeline, and the other end of the pump assembly is connected to the branch pipeline unit through a main pipeline. The pump assembly includes a first circulating water pump, a second circulating water pump, a first standby water pump, a second standby water pump and a third standby water pump; The branch pipe unit includes a first branch pipe and a second branch pipe, the user end unit includes a first end user end device and a second end user end device, the first branch pipe is provided with the first end user end device, and the second branch pipe is provided with the second end user end device; The pressure gauge assembly includes a first pressure gauge, a second pressure gauge and a third pressure gauge; the pipeline pump assembly includes a first variable frequency pipeline pump and a second variable frequency pipeline pump; wherein the first pressure gauge is arranged on the main pipeline; the second pressure gauge and the first variable frequency pipeline pump are arranged on the first branch pipeline, and the second pressure gauge monitors the pressure parameters of the first variable frequency pipeline pump; the third pressure gauge and the second variable frequency pipeline pump are arranged on the second branch pipeline, and the third pressure gauge monitors the pressure parameters of the second variable frequency pipeline pump; The check valve assembly includes a first check valve and a second check valve, one end of the first check valve is connected to the input end of the first variable frequency pipeline pump, and the other end of the first check valve is connected to the output end of the first variable frequency pipeline pump; one end of the second check valve is connected to the input end of the second variable frequency pipeline pump, and the other end of the second check valve is connected to the output end of the second variable frequency pipeline pump; The temperature meter component includes a first temperature meter and a second temperature meter. The first temperature meter is arranged on a first end user terminal device, and the second temperature meter is arranged on a second end user terminal device.

2. The energy-saving control device for a water system according to claim 1, characterized in that: It also includes a regulating valve assembly, which is installed on the branch pipeline unit.

3. The energy-saving control device for a water system according to claim 2, characterized in that: The branch pipeline unit also includes a third branch pipeline, the user end unit also includes a third end user end device, the regulating valve assembly includes a first regulating valve, the temperature meter assembly includes a third temperature meter, the first regulating valve and the third end user end device are both arranged on the third branch pipeline, and the third end user end device is provided with a third temperature meter.

4. The energy-saving control device for a water system according to claim 3, characterized in that: The branch pipeline unit also includes a fourth branch pipeline, the user end unit also includes a fourth end user end device, the regulating valve assembly includes a second regulating valve, the temperature meter assembly includes a fourth temperature meter, the second regulating valve and the fourth end user end device are both arranged on the fourth branch pipeline, and the fourth end user end device is provided with a fourth temperature meter.

5. The energy-saving control device for a water system according to claim 4, characterized in that: The branch pipeline unit also includes a fifth branch pipeline, the user end unit also includes a fifth end user end device, the regulating valve assembly includes a third regulating valve, the temperature meter assembly includes a fifth temperature meter, the third regulating valve and the fifth end user end device are both arranged on the fifth branch pipeline, and the fifth end user end device is provided with a fifth temperature meter.

6. The energy-saving control device for a water system according to claim 5, characterized in that: All output ends of the first branch pipeline, the second branch pipeline, the third branch pipeline, the fourth branch pipeline and the fifth branch pipeline are collectively connected to the circulating water pool.

7. The energy-saving control device for a water system according to claim 1, characterized in that: The power ranges of the first variable frequency pipeline pump and the second variable frequency pipeline pump are both 0.75kw-110kw.

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