Assembly for reducing energy consumption of heat conduction oil circulating pump
By using an adjustable injection mixer and frequency converter in the heat transfer oil circulation system, the flow rate and head are optimized, solving the problem of high energy consumption of the circulation pump and improving the stability and energy efficiency of the system.
Patent Information
- Application Number
- CN202423138875.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-19
AI Technical Summary
In existing heat transfer oil circulation systems, the circulation pump needs to overcome the resistance of remote equipment and pipelines, which leads to an increase in head, resulting in energy waste and failure to fully utilize the excess pressure head.
An adjustable injection mixer and frequency converter control components are used to optimize the flow rate and head of the circulating pump, utilizing excess pressure head to reduce unnecessary flow and power consumption.
By optimizing flow rate and head, the energy consumption of the circulating pump was reduced, the system's operational stability and energy efficiency were improved, and a power saving effect of 20-30% was achieved.
Smart Images
Figure CN223511925U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of heat transfer oil circulation systems, and in particular relates to a component for reducing the energy consumption of heat transfer oil circulation pumps. Background Technology
[0002] Thermal oil systems offer strong heating capacity, high heating temperatures, and low operating pressures. They are widely used in industrial production.
[0003] However, currently, the heating capacity is generally not fully utilized. The head of the heat transfer oil circulating pump is forced to be increased to overcome the resistance of the furthest equipment and pipelines. However, near-end equipment, due to lower pipeline resistance, is forced to adjust the flow of heat transfer oil into the equipment by closing valves. This results in available pressure head being consumed by valves instead of being utilized by the heating system, leading to waste. Increasing the head of the circulating pump also increases its power consumption, electricity usage, and overall system energy consumption, necessitating improvement. Utility Model Content
[0004] The main technical problem solved by this utility model is to provide a component that reduces the energy consumption of a heat transfer oil circulating pump, which can greatly increase the operational stability of the system, make full use of the excess pressure head of each branch, reduce the flow rate, head and power of the circulating pump, reduce power consumption, and achieve the energy-saving purpose of the heat transfer oil system.
[0005] To solve the above-mentioned technical problems, the present invention provides a component for reducing the energy consumption of a heat transfer oil circulating pump, including a heat source device, a heat-using device, a circulating pump, pipelines, and valves. Multiple sets of heat-using devices are provided, including a first heat-using device, a second heat-using device, and a third heat-using device. The pipelines include a main oil supply pipe, a main oil return pipe, and branch pipes. The output end of the heat source device is connected to the main oil supply pipe, and the input end is connected to the main oil return pipe. The first, second, and third heat-using devices are sequentially connected between the main oil supply pipe and the main oil return pipe via branch pipes. The circulating pump is connected to the oil return end of the heat source device. Multiple valves are provided and connected to the branch pipes. A control component is provided on the circulating pump. The input end of the first heat-using device is connected to a first adjustable injection mixer, and the input end of the second heat-using device is connected to a second adjustable injection mixer.
[0006] In a preferred embodiment of this utility model, the main oil supply pipe includes a first main oil supply pipe, a second main oil supply pipe, and a third main oil supply pipe; the main oil return pipe includes a first main oil return pipe, a second main oil return pipe, and a third main oil return pipe; the branch pipe where the first heat-using equipment is located includes a first branch pipe, a second branch pipe, a third branch pipe, and a fourth branch pipe; the branch pipe where the second heat-using equipment is located includes a fifth branch pipe, a sixth branch pipe, a seventh branch pipe, and an eighth branch pipe; and the branch pipe where the third heat-using equipment is located includes a ninth branch pipe and a tenth branch pipe.
[0007] In a preferred embodiment of this utility model, the control component is a frequency converter.
[0008] In a preferred embodiment of the present invention, the valves include a first valve, a second valve, and a third valve on the branch pipe where the first heat-using device is located; a fourth valve, a fifth valve, and a sixth valve on the branch pipe where the second heat-using device is located; and a seventh valve and an eighth valve on the branch pipe where the third heat-using device is located.
[0009] In a preferred embodiment of this utility model, a first valve is connected to the first branch pipe, one end of the first branch pipe is connected between the first oil supply main pipe and the second oil supply main pipe, and the other end is connected to the first adjustable injection mixer. The first adjustable injection mixer is connected to the first heat-using device through the second branch pipe. The first heat-using device is connected between the first return oil main pipe and the second return oil main pipe through the third branch pipe connected to the second valve. The first adjustable injection mixer is connected to the first return oil main pipe through the fourth branch pipe connected to the third valve.
[0010] In a preferred embodiment of this utility model, a fourth valve is connected to the fifth branch pipe, one end of the fifth branch pipe is connected between the second oil supply main pipe and the third oil supply main pipe, and the other end is connected to the second adjustable injection mixer. The second adjustable injection mixer is connected to the second heat-using device through the sixth branch pipe. The second heat-using device is connected between the second return oil main pipe and the third return oil main pipe through the seventh branch pipe connected to the fifth valve. The second adjustable injection mixer is connected to the second return oil main pipe through the eighth branch pipe connected to the sixth valve.
[0011] In a preferred embodiment of the present invention, a seventh valve is connected to the ninth branch pipe, one end of the ninth branch pipe is connected to the output end of the third oil supply main pipe, and the other end is connected to the third heat-using device. The third heat-using device is connected to the input end of the third oil return main pipe through a tenth branch pipe connected to an eighth valve.
[0012] The beneficial effects of this utility model are: the component for reducing the energy consumption of the heat transfer oil circulation pump pointed out by this utility model can greatly increase the operational stability of the system, make full use of the excess pressure head of each branch, reduce the flow rate, head and power of the circulation pump, reduce power consumption, and achieve the energy-saving purpose of the heat transfer oil system. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0014] Figure 1 This is a schematic diagram of a preferred embodiment of a component for reducing the energy consumption of a heat transfer oil circulating pump according to the present invention. Detailed Implementation
[0015] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0016] Please see Figure 1 As shown, the embodiments of this utility model include:
[0017] A component for reducing the energy consumption of a heat transfer oil circulating pump includes a heat source device 1, a heat-using device, a circulating pump 2, pipelines, and valves.
[0018] The system includes multiple sets of heat-using equipment, including a first heat-using device 3, a second heat-using device 4, and a third heat-using device 5. The pipeline includes a main oil supply pipe, a main oil return pipe, and branch pipes. The output end of the heat source device 1 is connected to the main oil supply pipe, and its input end is connected to the main oil return pipe. The first heat-using device 3, the second heat-using device 4, and the third heat-using device 5 are sequentially connected between the main oil supply pipe and the main oil return pipe via branch pipes. The input end of the first heat-using device 3 is connected to a first adjustable injection mixer 31, and the input end of the second heat-using device 4 is connected to a second adjustable injection mixer 32. The circulating pump 2 is connected to the oil return end of the heat source device 1, and a control component 6 is installed on the circulating pump 2 to achieve circulating oil supply. The control component 6 is a frequency converter used to control the flow rate and head of the circulating pump 2. Multiple valves are installed and connected to the branch pipes.
[0019] The components are shown below:
[0020] The oil supply main includes a first oil supply main 7, a second oil supply main 8 and a third oil supply main 9, and the oil return main includes a first oil return main 10, a second oil return main 11 and a third oil return main 12.
[0021] The branch pipes of the first heat-using device 3 include the first branch pipe 13, the second branch pipe 14, the third branch pipe 15 and the fourth branch pipe 16; the branch pipes of the second heat-using device 4 include the fifth branch pipe 17, the sixth branch pipe 18, the seventh branch pipe 19 and the eighth branch pipe 20; and the branch pipes of the third heat-using device 5 include the ninth branch pipe 21 and the tenth branch pipe 22.
[0022] The valves include a first valve 23, a second valve 24 and a third valve 25 on the branch pipe where the first heat-using device 3 is located, a fourth valve 26, a fifth valve 27 and a sixth valve 28 on the branch pipe where the second heat-using device 4 is located, and a seventh valve 29 and an eighth valve 30 on the branch pipe where the third heat-using device 5 is located.
[0023] The connections of each component are shown below:
[0024] A first valve 23 is connected to the first branch pipe 13. One end of the first branch pipe 13 is connected between the first oil supply main pipe 7 and the second oil supply main pipe 8, and the other end is connected to the first adjustable injection mixer 31. The first adjustable injection mixer 31 is connected to the first heat-using device 3 through the second branch pipe 14. The first heat-using device 3 is connected between the first return oil main pipe 10 and the second return oil main pipe 11 through the third branch pipe 15 connected to the second valve 24. The first adjustable injection mixer 31 is connected to the first return oil main pipe 10 through the fourth branch pipe 16 connected to the third valve 25.
[0025] A fourth valve 26 is connected to the fifth branch pipe 17. One end of the fifth branch pipe 17 is connected between the second oil supply main pipe 8 and the third oil supply main pipe 9, and the other end is connected to the second adjustable injection mixer 32. The second adjustable injection mixer 32 is connected to the second heat-using device 4 through the sixth branch pipe 18. The second heat-using device 4 is connected between the second return oil main pipe 11 and the third return oil main pipe 12 through the seventh branch pipe 19 connected to the fifth valve 27. The second adjustable injection mixer 32 is connected to the second return oil main pipe 11 through the eighth branch pipe 20 connected to the sixth valve 28.
[0026] The ninth branch pipe 21 is connected to the seventh valve 29. One end of the ninth branch pipe 21 is connected to the output end of the third oil supply main pipe 9, and the other end is connected to the third heat-using device 5. The third heat-using device 5 is connected to the input end of the third return oil main pipe 12 through the tenth branch pipe 22 connected to the eighth valve 30.
[0027] During the original equipment usage:
[0028] Set heat source device 1, Q=300m 3 / h, H=0.4MPa. The first heat-using device 3, the second heat-using device 4, and the third heat-using device 5 each have a Q=100m³ / h. 3 / h, H=0.1MPa.
[0029] After being pressurized by circulating pump 2, the heat transfer oil passes through the heat source at a pressure value that is artificially set to an usable pressure of H = 0.4 MPa after the pressure drop. This pressure is just enough to overcome the resistance of the terminal pipeline and the heat-using equipment. For the first heat-using equipment 3, there is an excess pressure head of 0.3 MPa, which is consumed by valve and pipeline resistance, producing no effect and wasting the excess usable pressure head. For the second heat-using equipment 4, there is an excess pressure head of 0.2 MPa, which is consumed by valve and pipeline resistance, producing no effect and wasting the excess usable pressure head. For the third heat-using equipment 5, there is no excess pressure head.
[0030] After improvement:
[0031] After being pressurized by the circulating pump 2, the heat transfer oil passes through the heat source device 1. The usable pressure after the pressure drop is set to H = 0.4 MPa, and the pressure loss through the first oil supply main pipe 7 is 0.05 MPa. Therefore, the pressure head entering the first adjustable injection mixer 31 is 0.35 MPa, and Q = 70 m. 3 / h, the pressure loss of the first heat-using equipment 3 is 0.1MPa, then the excess pressure head is 0.2MPa. Utilizing the excess pressure head of 0.2MPa, Q=30m is drawn in through the first adjustable injection mixer 31. 3 The return oil flows at a rate of / h, then enters the first heat-using device 3. The flow rate of the heat transfer oil through the first heat-using device 3 is Q = 100m³. 3 / h.
[0032] Similarly: the pressure head entering the second adjustable injection mixer 32 is 0.3MPa, Q=80m 3 / h, the pressure loss of the second heat-using equipment 4 is 0.1MPa, so the excess pressure head is 0.1MPa. Utilizing the excess pressure head of 0.1MPa, Q=20m³ is drawn in through the second adjustable injection mixer 32. 3 The return oil flows at a rate of / h, then enters the second heat-using device 4. The flow rate of the heat transfer oil through the first heat-using device 3 is Q = 100m³. 3 / h.
[0033] Similarly: the pressure head entering the third heat-using device 5 is 0.25 MPa, with no excess pressure head available. The flow rate of the heat transfer oil through the first heat-using device 3 is Q = 100 m³ / s. 3 / h.
[0034] The first heat-using device 3 and the second heat-using device 4 were equipped with a first adjustable injection mixer 31 and a second adjustable injection mixer 32, reducing the oil inlet flow rate by Q=50m. 3 / h. This indicates that the total circulation volume can be reduced by Q=50m. 3 / h, the total oil supply of circulating pump 2 only needs Q=250m 3 / h is sufficient to meet heating requirements.
[0035] Because of the adjustable jet mixer, the oil inlet and outlet flow rates can be adjusted according to the actual heat load and temperature of the equipment, ensuring normal heat utilization and hydraulic stability of the system.
[0036] Since the circulation pipeline remains unchanged, a smaller flow rate results in a slower flow velocity and reduced pipeline resistance. Consequently, the head of circulation pump 2, which overcomes this resistance, can also be lowered. As the flow rate and head of circulation pump 2 decrease, its power consumption also decreases. Electricity consumption also decreases accordingly, typically saving 20-30%.
[0037] This application selects three heat-using devices, but more can be used, as long as there is excess pressure head to increase the heat supply. Conversely, when the heat supply is constant, the flow rate and head of the circulating oil pump can be reduced, which increases system stability and achieves energy saving.
[0038] In summary, the component for reducing the energy consumption of a heat transfer oil circulating pump as described in this utility model can greatly increase the operational stability of the system, make full use of the excess pressure head of each branch, reduce the flow rate, head, and power of the circulating pump, reduce power consumption, and achieve the energy-saving purpose of the heat transfer oil system.
[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A component for reducing the energy consumption of a heat transfer oil circulating pump, comprising a heat source device, heat-using devices, a circulating pump, pipelines, and valves, wherein multiple sets of heat-using devices are provided, including a first heat-using device, a second heat-using device, and a third heat-using device; the pipelines include a main oil supply pipe, a main oil return pipe, and branch pipes; the output end of the heat source device is connected to the main oil supply pipe, and the input end is connected to the main oil return pipe; the first, second, and third heat-using devices are sequentially connected between the main oil supply pipe and the main oil return pipe via branch pipes; the circulating pump is connected to the oil return end of the heat source device; and multiple valves are provided and connected to the branch pipes, characterized in that... The circulating pump is equipped with a control component. The input end of the first heat-using device is connected to a first adjustable injection mixer, and the input end of the second heat-using device is connected to a second adjustable injection mixer.
2. The component for reducing the energy consumption of a heat transfer oil circulating pump according to claim 1, characterized in that, The main oil supply pipe includes a first main oil supply pipe, a second main oil supply pipe, and a third main oil supply pipe. The main oil return pipe includes a first main oil return pipe, a second main oil return pipe, and a third main oil return pipe. The branch pipe where the first heat-using equipment is located includes a first branch pipe, a second branch pipe, a third branch pipe, and a fourth branch pipe. The branch pipe where the second heat-using equipment is located includes a fifth branch pipe, a sixth branch pipe, a seventh branch pipe, and an eighth branch pipe. The branch pipe where the third heat-using equipment is located includes a ninth branch pipe and a tenth branch pipe.
3. The component for reducing the energy consumption of a heat transfer oil circulating pump according to claim 1, characterized in that, The control component is a frequency converter.
4. The component for reducing the energy consumption of a heat transfer oil circulating pump according to claim 2, characterized in that, The valves include a first valve, a second valve, and a third valve on the branch pipe where the first heat-using equipment is located; a fourth valve, a fifth valve, and a sixth valve on the branch pipe where the second heat-using equipment is located; and a seventh valve and an eighth valve on the branch pipe where the third heat-using equipment is located.
5. The component for reducing the energy consumption of a heat transfer oil circulating pump according to claim 4, characterized in that, A first valve is connected to the first branch pipe. One end of the first branch pipe is connected between the first oil supply main pipe and the second oil supply main pipe, and the other end is connected to the first adjustable injection mixer. The first adjustable injection mixer is connected to the first heat-using device through the second branch pipe. The first heat-using device is connected between the first return oil main pipe and the second return oil main pipe through the third branch pipe connected with the second valve. The first adjustable injection mixer is connected to the first return oil main pipe through the fourth branch pipe connected with the third valve.
6. The component for reducing the energy consumption of a heat transfer oil circulating pump according to claim 4, characterized in that, A fourth valve is connected to the fifth branch pipe. One end of the fifth branch pipe is connected between the second and third oil supply main pipes, and the other end is connected to the second adjustable injection mixer. The second adjustable injection mixer is connected to the second heat-using equipment through the sixth branch pipe. The second heat-using equipment is connected between the second and third return oil main pipes through the seventh branch pipe connected to the fifth valve. The second adjustable injection mixer is connected to the second return oil main pipe through the eighth branch pipe connected to the sixth valve.
7. The component for reducing the energy consumption of a heat transfer oil circulating pump according to claim 4, characterized in that, The ninth branch pipe is connected to the seventh valve. One end of the ninth branch pipe is connected to the output end of the third oil supply main pipe, and the other end is connected to the third heat-using equipment. The third heat-using equipment is connected to the input end of the third oil return main pipe through the tenth branch pipe connected to the eighth valve.