A circulating water pump unit

Abstract

The utility model relates to a circulating water pump unit, it includes circulating pump, one end of this circulating pump is connected to system water inlet one end through pipeline, the other end of this circulating pump is connected temperature buffer tank, constant pressure water supplement device and a pressure stabilizing tank through pipeline parallel connection, the temperature buffer tank connects system backwater end, the constant pressure water supplement device connects external water source, the utility model can effectively reduce system to circulating pump's temperature impact, can effectively prevent system leakage or the system water shortage caused by other reasons, effectively reduce the water hammer to system's pressure impact, effectively improve system's stability and reliability.

Description

Technical Field

[0001] This utility model relates to the technical improvement of cooling circulating water pump units, and in particular to a circulating water pump unit. Background Technology

[0002] When existing air conditioning cooling circulation systems are put into use, they rely on methods such as... Figure 1 The circulating water pump unit shown has No. 1 circulating pump 11 and No. 2 circulating pump 12 pressurizing the liquid in the system pipeline to ensure the circulation of the liquid in the system, thereby ensuring the normal use of the system.

[0003] During system operation, existing circulating water pump units experience temperature shocks to the circulating pumps due to the temperature difference between the system's inlet and outlet water after passing through the chiller (or heat pump), placing high demands on the pumps' manufacturing. Furthermore, leaks in the system piping can lead to water shortages, ultimately rendering the system unusable. Additionally, temperature fluctuations and pump shutdowns can create water hammer, impacting the piping and causing system instability. Utility Model Content

[0004] The purpose of this utility model is to provide a circulating water pump unit that mainly solves the problems existing in the prior art. It can effectively reduce the temperature impact of the system on the circulating pump, effectively prevent system leakage or other reasons from causing water shortage in the system, effectively reduce the pressure impact of water hammer on the system, and effectively improve the stability and reliability of the system.

[0005] To achieve the above-mentioned objectives, the technical solution of this utility model is as follows:

[0006] A circulating water pump unit includes a circulating pump, one end of which is connected to the system inlet via a pipeline, characterized in that:

[0007] The other end of the circulating pump is connected in parallel to a temperature buffer tank, a constant pressure water supply device, and a pressure stabilizing tank via a pipeline; the temperature buffer tank is connected to the system return water end; and the constant pressure water supply device is connected to an external water source.

[0008] The circulating water pump unit is characterized in that: two circulating pumps are connected in parallel, namely a first circulating pump and a second circulating pump.

[0009] Through the above technical solution, this utility model has the following advantages:

[0010] 1. The addition of a temperature buffer tank to the circulating water pump unit of this utility model effectively reduces the temperature impact of the system on the circulating pump and effectively reduces the manufacturing cost of the unit.

[0011] 2. The addition of a constant pressure water supply device to the circulating water pump unit of this utility model can effectively prevent water shortage caused by system leakage or other reasons, and effectively improve the reliability of the system.

[0012] 3. The addition of a pressure stabilizing tank to the circulating water pump unit of this utility model can absorb a certain amount of energy, effectively reducing the pressure impact of water hammer on the system when water hammer occurs, and effectively improving the stability of the system. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an existing circulating water pump unit.

[0014] Figure 2 This is a schematic diagram of the circulating water pump unit of this utility model. Detailed Implementation

[0015] Please see Figure 2 This utility model discloses a circulating water pump unit that can be connected to an air conditioning cooling circulation system. It includes a circulating pump, one end of which is connected to the system's water inlet via a pipeline. The key feature is that the other ends of the circulating pumps 11 and 12 are connected in parallel via pipelines to a temperature buffer tank 2, a constant pressure water supply device 3, and a pressure stabilizing tank 4; the temperature buffer tank 2 is connected to the system's return water end; and the constant pressure water supply device 3 is connected to an external water source.

[0016] In this invention, the temperature buffer tank 2 can be the V750 temperature buffer tank from Reflex HVAC Equipment (Shanghai) Co., Ltd., the constant pressure water supply device 3 can be the Digimat1-2 / 40 constant pressure water supply device from Reflex HVAC Equipment (Shanghai) Co., Ltd., and the pressure stabilizing tank 4 can be the H300 expansion tank from Reflex HVAC Equipment (Shanghai) Co., Ltd.

[0017] During normal operation, the circulating pump pressurizes the liquid in the system pipeline to ensure the fluid circulation and thus guarantee normal system operation. When the system's cold (hot) water circulates to the temperature buffer tank 2 via the system return water, the room-temperature water stored in the buffer tank 2 buffers the temperature, reducing thermal shock to the circulating pump. When the system leaks or depressurizes, external water supply is required through the constant pressure water supply device 3. When the system shuts down or experiences water hammer due to drastic temperature changes, the pressure stabilizing tank 4 can absorb the water hammer, thereby improving system stability.

[0018] As a preferred embodiment, two circulation pumps are connected in parallel, namely a first circulation pump 11 and a second circulation pump 12. The first circulation pump 11 and the second circulation pump 12 can respectively replenish water to the system inlet as needed. Butterfly valves are installed on the front and rear pipelines of the first circulation pump 11 and the second circulation pump 12 for connection to the system as needed.

[0019] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A circulating water pump unit, comprising a circulating pump, one end of which is connected to the system inlet via a pipeline, characterized in that: The other end of the circulating pump (11, 12) is connected in parallel to a temperature buffer tank (2), a constant pressure water supply device (3) and a pressure stabilizing tank (4) through a pipeline; the temperature buffer tank (2) is connected to the system return water end; the constant pressure water supply device (3) is connected to an external water source.

2. The circulating water pump unit according to claim 1, characterized in that: Two circulation pumps are connected in parallel, namely the first circulation pump (11) and the second circulation pump (12).

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