Energy-saving optimization device of circulating water system

Abstract

The utility model relates to the technical field of circulating water systems, in particular to an energy-saving optimization device for a circulating water system, which is suitable for a circulating water pipe network system and comprises a water supply pipeline and a water return pipeline which are used for connecting the circulating water pipe network system, and N energy-saving optimization devices are arranged between the water supply pipeline and the water return pipeline in parallel, the energy-saving optimization device comprises a manual gate valve A, an electric gate valve, a circulating water pump, a filter and a manual gate valve B which are connected in series through a circulating pipe; the circulating water pumps and the electric gate valves are in linkage control, the water flow non-return effect is achieved, the corresponding electric gate valves are synchronously closed when the circulating water pumps are closed, the electric gate valves are synchronously opened when the circulating water pumps are started, by means of the energy-saving optimization device, 10-15 m circulating water pump pressure head loss of a traditional check valve is avoided, the resistance of a water system is greatly reduced, and the service life of the water system is prolonged. The conveying efficiency of the water pump is improved; the energy-saving device is simple in structure, obvious in energy-saving effect, high in input-output ratio and easy to popularize.

Description

Technical Field

[0001] The utility model relates to the technical field of circulating water systems, in particular to an energy-saving optimization device for circulating water systems. Background Art

[0002] At present, a survey has been conducted on public building projects with circulating water systems. It was found that designers of traditional design institutes have installed check valves in multi-pump parallel HVAC circulating water systems and / or chilled water / cooling water systems. The main function is to prevent water backflow. However, the check valve has the disadvantages of complex flow channels, small opening, and high local resistance. In actual operation, under rated flow, the check valve (slow-closing check valve) at the rear end of the circulating water pump has a pressure loss of 10-15m. Taking a circulating water pump head of 30m as an example, the energy loss of the circulating water pump is between 33-50%; taking a commercial building of 100,000 square meters in a hot summer and cold winter area as an example, the annual energy consumption of HVAC circulating water is 300,000 kWh, and the energy loss of the check valve is between 99,000 and 150,000 kWh, which does not meet the energy-saving and efficient utilization requirements of existing technologies. There is currently no technology to solve the above problems. Summary of the invention

[0003] In order to solve the above problems, the utility model aims to disclose a technical field of a circulating water system, and in particular, a circulating water system energy-saving optimization device.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a circulating water system energy-saving optimization device, which is applicable to a circulating water network system, comprises a water supply pipeline and a water return pipeline for connecting a circulating water network system and / or a circulating water device, wherein N energy-saving optimization devices are arranged in parallel between the water supply pipeline and the water return pipeline, and the energy-saving optimization device comprises a manual gate valve A, an electric gate valve, a circulating water pump, a filter and a manual gate valve B arranged in series through a circulating pipe;

[0005] The manual gate valve A is arranged at the head end of the circulation pipe and is connected to the water supply pipeline. The electric gate valve is arranged on the side of the circulation water pump close to the water supply pipeline and is connected to the manual gate valve A. The electric gate valve and the manual gate valve A are provided with a pressure sensor A.

[0006] A manual gate valve B is arranged at the end of the circulation pipe and is connected to the return pipe. The filter is arranged on the side of the circulation water pump close to the return pipe and is connected to the manual gate valve B. The circulation water pump and the filter are provided with a pressure sensor B.

[0007] Preferably, N is greater than or equal to 1.

[0008] Preferably, the energy-saving optimization device further includes a shockproof device, wherein the shockproof device includes

[0009] A first shockproof member is arranged between the electric gate valve and the circulating water pump;

[0010] The second shockproof component is arranged between the circulating water pump and the filter.

[0011] Preferably, the first shock-proof component is a first shock-proof joint; and the second shock-proof component is a second shock-proof joint.

[0012] Preferably, the filter is a Y-type filter.

[0013] Preferably, an inspection port is provided at the downward end of the Y-type filter.

[0014] Preferably, the manual gate valve A, the electric gate valve, the circulating water pump, the filter, the manual gate valve B and the anti-vibration device are connected via flanges.

[0015] Preferably, the circulating water pump forms a logical operation connection with the electric gate valve through a PLC programmable controller.

[0016] Preferably, the circulating water pump also includes a water pump control box.

[0017] Preferably, the energy-saving optimization device has two modes: manual control and automatic control. The automatic control switch is set on the panel of the water pump control box, and the manual control switch is used to control the manual gate valve A and the manual gate valve B.

[0018] The beneficial effects of the utility model are as follows: the utility model designs an energy-saving optimization device for a circulating water system, which is suitable for a circulating water network system, including a water supply pipeline and a return pipeline for connecting a circulating water network system and / or a circulating water device, and N energy-saving optimization devices are arranged in parallel between the water supply pipeline and the return pipeline, and the energy-saving optimization device includes a manual gate valve A, an electric gate valve, a circulating water pump, a filter and a manual gate valve B arranged in series through a circulating pipe; the circulating water pump is controlled in linkage with the electric gate valve, which plays a role of water flow check, and the corresponding electric gate valve is synchronously closed when the circulating water pump is turned off, and the electric gate valve is synchronously opened during the startup process of the circulating water pump. By using the energy-saving optimization device, the pressure head loss of the circulating water pump of 10-15m of the traditional check valve is avoided, the resistance of the water system is greatly reduced, the transportation efficiency of the water pump is improved, and it can make outstanding contributions to energy conservation and emission reduction; the utility model has a simple structure, obvious energy-saving effect, high input-output ratio, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of an energy-saving optimization device for a circulating water system of the utility model.

[0020] Figure 2 The utility model discloses a multi-pump parallel structure diagram of an energy-saving optimization device for a circulating water system.

[0021] Notes on the attached drawings:

[0022] 1-Manual gate valve A, 2-Electric gate valve, 3-Circulating water pump, 4-Filter, 5-Manual gate valve B, 6-Water supply pipeline, 7-Return pipeline, 8-Pressure sensor A, 9-Pressure sensor B, 10-First shockproof joint, 11-Second shockproof joint, 12-Inspection port. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings:

[0024] The utility model proposes an energy-saving optimization device for a circulating water system, which is applicable to a circulating water network system, including a HVAC circulating water system and / or a chilled water / cooling water system. The energy-saving optimization device includes a water supply pipeline 6 and a return pipeline 7 for connecting the circulating water network system and / or the circulating water equipment, and N energy-saving optimization devices are arranged in parallel between the water supply pipeline 6 and the return pipeline 7. The energy-saving optimization device includes a manual gate valve A1, an electric gate valve 2, a circulating water pump 3, a filter 4 and a manual gate valve B5 which are arranged in series through a circulating pipe;

[0025] In this embodiment, at least one energy-saving optimization device is arranged in parallel between the water supply pipeline 6 and the return pipeline 7. To make the operation efficiency of the energy-saving optimization device higher, the N may be 2 or greater than 2;

[0026] The manual gate valve A1 is arranged at the head end of the circulation pipe and communicates with the water supply pipeline 6. The electric gate valve 2 is arranged on the side of the circulation water pump 3 close to the water supply pipeline 6 and connected to the manual gate valve A1. The electric gate valve 2 and the manual gate valve A1 are provided with a pressure sensor A8. The circulation water pump 3 also includes a water pump control box. The circulation water pump 3 forms a logical operation connection with the electric gate valve 2 through a PLC programmable controller.

[0027] The manual gate valve B5 is arranged at the end of the circulation pipe and communicates with the return pipe 7. The filter 4 is arranged on the side of the circulation water pump 3 close to the return pipe 7 and connected to the manual gate valve B5. The circulation water pump 3 and the filter 4 are provided with a pressure sensor B9.

[0028] This energy-saving optimization device has two modes: manual control and automatic control. The automatic control switch is set on the panel of the water pump control box, and the manual control switch is used to control the manual gate valve A1 and the manual gate valve B5;

[0029] The manual gate valve A1, the electric gate valve 2, the circulating water pump 3, the filter 4, the manual gate valve B5 and the anti-vibration device are preferably connected by flanges;

[0030] Specifically, the filter 4 is a Y-type filter 4, and an inspection port 12 is provided at the lower end of the Y-type filter 4 to facilitate later maintenance;

[0031] The energy-saving optimization device also includes a shockproof device, which includes

[0032] A first shockproof member is arranged between the electric gate valve 2 and the circulating water pump 3;

[0033] The second shockproof component is arranged between the circulating water pump 3 and the filter 4 .

[0034] In this embodiment, the first shockproof component is a first shockproof joint 10 ; the second shockproof component is a second shockproof joint 11 .

[0035] In the traditional multi-pump parallel circulating water system, a check valve is set, which mainly plays the role of preventing water backflow. However, the check valve has the disadvantages of complex flow channel, small opening and high local resistance. In the actual operation process, under the rated flow, the check valve (slow closing check valve) at the rear end of the circulating water pump 3 has a pressure loss of 10-15m. Taking the 30m head of the circulating water pump 3 as an example, the energy loss of the circulating water pump 3 is between 33-50%; taking a commercial building of 100,000 square meters in a hot summer and cold winter area as an example, the annual energy consumption of HVAC circulating water is 300,000 kWh, and the energy loss of the check valve is between 99,000 degrees and 150,000 degrees, which does not meet the energy-saving and efficient utilization requirements of the existing technology. The circulating water system is a closed system. The circulating water pump 3 can be fully used to overcome the resistance of the pipe network to do work. Therefore, the energy consumption of setting a check valve in the circulating water system is relatively large. The utility model designs an energy-saving optimization device for a circulating water system, which is suitable for a circulating water pipe network system. The electric gate valve 2 is used instead of the check valve. The circulating water pump 3 and the electric gate valve 2 are linked and controlled to play a role of water flow check to prevent the circulating water pump 3 from being reversed in parallel. When the circulating water pump 3 is turned off, the corresponding electric gate valve 2 is synchronously closed. When the circulating water pump 3 is started, the electric gate valve 2 is synchronously opened. This embodiment ensures that the water flow direction of the circulating water system with multiple pumps in parallel does not reverse through multiple debugging;

[0036] The utility model refines the linkage control of the circulating water pump 3 and the electric gate valve 2, and completely replaces the check valve with the electric gate valve 2 with almost no local resistance. When the circulating water pump 3 is operating normally, the electric gate valve 2 remains 100% open; the energy-saving optimization device is used to reduce the overall resistance coefficient of the circulating water pipe network system, reduce the transmission energy consumption of the circulating water pump 3, improve the transmission efficiency of the circulating water pump 3, avoid the pressure head loss of the circulating water pump 3 of 10-15m, and can make outstanding contributions to energy conservation and emission reduction, and is suitable for circulating water systems such as chemical industry and HVAC;

[0037] The utility model has the advantages of simple structure, convenient use, low manufacturing cost, obvious energy-saving effect, high input-output ratio, easy promotion, great social and economic benefits, and huge market demand.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the technical scope of the present utility model. Technical personnel in this industry can make some deformations and modifications inspired by the present technical solution. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model are still within the scope of the technical solution of the present utility model.

Claims

1. A circulating water system energy-saving optimization device, applicable to a circulating water pipe network system, comprising a water supply pipeline and a water return pipeline for connecting a circulating water pipe network system and / or a circulating water device, characterized in that: N energy-saving optimization devices are arranged in parallel between the water supply pipeline and the return pipeline, and the energy-saving optimization devices include a manual gate valve A, an electric gate valve, a circulating water pump, a filter and a manual gate valve B arranged in series through a circulation pipe; The manual gate valve A is arranged at the head end of the circulation pipe and is connected to the water supply pipeline. The electric gate valve is arranged on the side of the circulation water pump close to the water supply pipeline and is connected to the manual gate valve A. The electric gate valve and the manual gate valve A are provided with a pressure sensor A. A manual gate valve B is arranged at the end of the circulation pipe and is connected to the return pipe. The filter is arranged on the side of the circulation water pump close to the return pipe and is connected to the manual gate valve B. The circulation water pump and the filter are provided with a pressure sensor B.

2. The energy-saving optimization device for a circulating water system according to claim 1, characterized in that: The N is greater than or equal to 1.

3. The energy-saving optimization device for a circulating water system according to claim 1, characterized in that: The energy-saving optimization device also includes a shockproof device, which includes A first shockproof member is arranged between the electric gate valve and the circulating water pump; The second shockproof component is arranged between the circulating water pump and the filter.

4. The energy-saving optimization device for a circulating water system according to claim 3 is characterized in that: The first shockproof component is a first shockproof joint; the second shockproof component is a second shockproof joint.

5. The energy-saving optimization device for a circulating water system according to claim 1, characterized in that: The filter is a Y-type filter.

6. The energy-saving optimization device for a circulating water system according to claim 5, characterized in that: The Y-type filter is provided with an inspection port at the downward end.

7. The energy-saving optimization device for a circulating water system according to claim 6, characterized in that: The manual gate valve A, the electric gate valve, the circulating water pump, the filter, the manual gate valve B and the anti-vibration device are connected via flanges.

8. The energy-saving optimization device for a circulating water system according to claim 1, characterized in that: The circulating water pump forms a logical operation connection with the electric gate valve through a PLC programmable controller.

9. The energy-saving optimization device for a circulating water system according to claim 8, characterized in that: The circulating water pump also includes a water pump control box.

10. The energy-saving optimization device for a circulating water system according to claim 9, characterized in that: The energy-saving optimization device has two modes: manual control and automatic control. The automatic control switch is set on the panel of the water pump control box, and the manual control switch is used to control the manual gate valve A and the manual gate valve B.

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