Constant-pressure water replenishing device for integrated cold station

Abstract

The utility model discloses an integrated cold station constant pressure water replenishing device which comprises a water inlet pipeline, a water outlet pipeline, a water replenishing pump and an expansion water tank, the water inlet pipeline is connected with a buffer tank, and the buffer tank is connected with a first filter assembly and a second filter assembly in parallel. And the first filtering assembly and the second filtering assembly are respectively connected with a first electromagnetic valve and a second electromagnetic valve. By adopting the mode of connecting the filter assemblies in parallel and connecting the buffer tank in series, on one hand, the effects of improving the filter efficiency by double filtration and performing independent overhaul and maintenance by single filtration can be realized by respectively controlling the filter assemblies, and on the other hand, the water supply is not influenced by the filter efficiency by utilizing the temporarily stored filter water of the buffer tank; the operation efficiency of the whole system is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of constant pressure water replenishing device, specifically relates to a kind of integrated cold station constant pressure water replenishing device. BACKGROUND

[0002] Constant pressure water replenishing device is one of important components in integrated cold station system to maintain the stable operation of integrated cold station system and provide necessary water replenishing function.Its composition mainly includes water replenishing pump, expansion tank and pressure sensor.In the process of constant pressure water replenishing device operation, it will be affected by water quality to appear scale, corrosion and microbial growth, and then affect the normal operation of constant pressure water replenishing device, cause system pressure instability or water replenishing amount deficiency.In order to prevent water quality problem in prior art, prefiltering device or water softening device is installed before water replenishing pump, but it may affect water inflow speed;At the same time, when prefiltering device or water softening device fails, water quality change cannot be monitored in time, and it needs to be stopped for maintenance or overhaul, thereby affecting normal water replenishing work, and there is risk of cavitation in system. SUMMARY

[0003] The utility model provides a kind of integrated cold station constant pressure water replenishing device to solve at least one of the above technical problems.

[0004] The technical scheme adopted by the utility model is as follows: a kind of integrated cold station constant pressure water replenishing device, including water inlet pipeline, water outlet pipeline, water replenishing pump and expansion tank, buffer tank is connected on the water inlet pipeline, first filter assembly and second filter assembly are connected in parallel on the buffer tank, first electromagnetic valve and second electromagnetic valve are connected on the first filter assembly and the second filter assembly respectively.

[0005] In a preferred embodiment, the first filter assembly and the second filter assembly include a filter and a filter box, the filter box has an activated carbon filter layer, a cotton filter layer and a cation exchange resin layer.

[0006] In a preferred embodiment, the filter is a Y-type filter, a basket filter or a backwashing filter.

[0007] In a preferred embodiment, a first check valve is connected between the first filter assembly and the buffer tank, and a second check valve is connected between the second filter assembly and the buffer tank.

[0008] In a preferred embodiment, a vacuum degassing tank is further included, and the vacuum degassing tank is connected to the water replenishing pump through a backwater pipeline.

[0009] In a preferred embodiment, the water replenishing pump is two, and the two water replenishing pumps are connected in parallel.

[0010] In a preferred embodiment, an automatic dosing device is connected to the water outlet pipeline.

[0011] In a preferred embodiment, the height of the buffer tank is greater than the height of the expansion water tank, and an exhaust valve is connected to the buffer tank.

[0012] In a preferred embodiment, a liquid level sensor is connected to the buffer tank, and the liquid level sensor is electrically connected to the first electromagnetic valve and the second electromagnetic valve.

[0013] Thanks to the above technical solutions, the utility model has the following beneficial effects:

[0014] 1. As a preferred embodiment of the utility model, by connecting the filter groups in parallel and connecting the buffer tank in series, firstly, the opening and closing of the first electromagnetic valve and the second electromagnetic valve can be controlled according to the water supplement demand to control the water flow in the water inlet pipeline to pass through the first filter assembly and the second filter assembly; when the water supplement amount is small, only the first electromagnetic valve or the second electromagnetic valve can be opened to ensure that the water flow in the water inlet pipeline is filtered before water supplement; when the water supplement amount is large, the first electromagnetic valve and the second electromagnetic valve can be opened at the same time to filter the water flow by using the two filter assemblies, improve the filtering efficiency, and ensure the water supplement amount and water quality. Secondly, the first filter device and the second filter device connected in parallel can realize the maintenance of any filter device without stopping the system, and ensure the normal operation of the system. In addition, the buffer tank can store filtered water, and the stored water in the buffer tank and the expansion water tank can be consumed during water supplement, thereby improving the water supplement efficiency.

[0015] 2. As a preferred embodiment of the utility model, the filter box is provided with an activated carbon filter layer, a cotton filter layer and a cation exchange resin layer. The filter box filters the water passing through the filter twice through the multiple filter layers, avoids the tiny solid impurity particles from entering the integrated cold station system after passing through the filter, and improves the filtering effect. Meanwhile, the cation exchange resin layer removes the calcium and magnesium ions in the water to prevent the occurrence of water scaling.

[0016] 3. As a preferred embodiment of the utility model, the liquid level sensor detects the liquid level height of the buffer tank, the first electromagnetic valve and the second electromagnetic valve are opened to supplement the filtered water to the buffer tank when the liquid level is lower than the set value, and the water supply is stopped when the liquid level reaches the set value, so that there is enough pre-stored filtered water in the buffer tank, and the water supplement pressure brought by the water supplement peak is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the utility model, and constitute a part of the utility model. The schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute an improper limitation on the utility model. In the drawings:

[0018] Figure 1 The overall structure schematic view of a preferred embodiment of the utility model;

[0019] Figure 2 The filter box structure schematic view of a preferred embodiment of the utility model.

[0020] Reference signs

[0021] 1, water inlet pipeline;

[0022] 2, water outlet pipeline;

[0023] 3, water replenishing pump;

[0024] 4, expansion water tank;

[0025] 5, buffer tank; 51, exhaust valve; 52, liquid level sensor;

[0026] 6, first filter assembly; 61, first electromagnetic valve; 62, filter; 63, filter box; 631, activated carbon filter layer; 632, cotton filter layer; 633, cation exchange resin layer; 64, first check valve;

[0027] 7, second filter assembly; 71, second electromagnetic valve; 72, second check valve;

[0028] 8, vacuum degassing tank; 81, water return pipeline;

[0029] 9, automatic dosing device. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the overall concept of the utility model, the following will be described in detail in the form of examples combined with the drawings of the specification.

[0031] In the following description, a lot of specific details are set forth in order to fully understand the utility model, however, the utility model can also be implemented in other ways different from the description herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.

[0032] In addition, in the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation to the utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Example 1

[0036] A preferred embodiment, such as Figure 1 As shown, an integrated chiller plant constant pressure water supply device includes an inlet pipe 1, an outlet pipe 2, a water supply pump 3, and an expansion tank 4. A sensor for detecting the water pressure inside the outlet pipe 2 is connected to the outlet pipe 2. The sensor is electrically connected to an electrical control box, thereby controlling the water supply pump 3 and the expansion tank 4 to supply water to the outlet pipe 2 via the water pressure signal from the water pressure sensor. Furthermore, a buffer tank 5 is connected to the inlet pipe 1. A first filter assembly 6 and a second filter assembly 7 are connected in parallel to the buffer tank 5. A first solenoid valve 61 and a second solenoid valve 71 are respectively connected to the first filter assembly 6 and the second filter assembly 7.

[0037] By the way of connecting the filter groups in parallel and connecting the buffer tank 5 in series, firstly, the opening and closing of the first electromagnetic valve 61 and the second electromagnetic valve 71 can be controlled according to the water supplement demand to control the water flow in the water inlet pipeline 1 to pass through the first filter assembly 6 and the second filter assembly 7, when the water supplement amount is small, only the first electromagnetic valve 61 or only the second electromagnetic valve 71 can be opened to ensure that the water flow in the water inlet pipeline 1 is filtered and then supplemented; when the water supplement amount is large, the first electromagnetic valve 61 and the second electromagnetic valve 71 can be opened at the same time, so that the water flow is filtered by the two filter assemblies, the filtering efficiency is improved, and the water supplement amount and water quality are ensured. Secondly, the first filter device and the second filter device connected in parallel can realize the maintenance of any filter device without stopping the system to ensure the normal operation of the system. In addition, by using the buffer tank 5, the filtered water can be buffered, and in the process of water supplement, the stored water in the buffer tank 5 and the expansion tank 4 is consumed first, and the water supplement efficiency is improved.

[0038] Specifically, the first filter assembly 6 and the second filter assembly 7 include a filter 62 and a filter box 63, the filter 62 can adopt any one of a Y-type filter 62, a basket filter 62 or a backwashing filter 62, and the solid impurity particles in the water are filtered through the filter screen in the filter 62. As shown in Figure 2 The filter box 63 has an activated carbon filter layer 631, a cotton filter layer 632 and a cation exchange resin layer 633. The filter box 63 filters the water passing through the filter 62 through multiple filter layers to avoid that the tiny solid impurity particles pass through the filter 62 and enter the integrated cold station system, and improve the filtering effect. At the same time, the calcium and magnesium ions in the water are removed through the cation exchange resin layer 633 to prevent the occurrence of water scaling.

[0039] Further, the first check valve 64 is connected between the first filter assembly 6 and the buffer tank 5, and the second check valve 72 is connected between the second filter assembly 7 and the buffer tank 5. By controlling the one-way filtering property of the water passing through the filter assembly, the filtering effect of the filter assembly is prevented from being affected by the backflow of the water.

[0040] Further, the height of the buffer tank 5 is greater than the height of the expansion tank 4, and the exhaust valve 51 is connected above the buffer tank 5. During the filtering process of the water inlet, part of the air may enter the buffer tank 5, and the part of the air is discharged through the exhaust valve 51 to avoid the air entering the integrated cold station system to adversely affect the pipeline.

[0041] Furthermore, a liquid level sensor 52 is connected to the buffer tank 5, and the liquid level sensor 52 is electrically connected to the first solenoid valve 61 and the second solenoid valve 71. By detecting the liquid level height of the buffer tank 5 through the liquid level sensor 52, when the liquid level is lower than the set value, the first solenoid valve 61 and the second solenoid valve 71 open to replenish the buffer tank 5 with filtered water. When the liquid level reaches the set value, the water supply stops, thereby ensuring that there is enough pre-stored filtered water in the buffer tank 5 and reducing the water replenishment pressure caused by peak water replenishment.

[0042] Example 2

[0043] A preferred embodiment, such as Figure 1 As shown, an integrated chiller plant constant pressure water supply device, differing from Embodiment 1, also includes a vacuum degassing tank 8, which is connected to the water supply pump 3 via a return water pipe 81. After passing through the vacuum degassing tank 8, the water in the return water pipe 81 has its gas discharged, preventing cavitation of the pipe. Simultaneously, the water supply pump 3 transports the degassed water back to the outlet water pipe 2, achieving water circulation within the system.

[0044] Furthermore, there are two water replenishment pumps 3 connected in parallel. The two water replenishment pumps 3 can operate in a main and standby mode to ensure water replenishment efficiency.

[0045] Furthermore, an automatic dosing device 9 is connected to the outlet pipe 2. The automatic dosing device 9 can be used to add corrosion and scale inhibitors and bactericides and algaecides to the water to treat scale and algae in the pipe and ensure the normal operation of the heat exchange unit.

[0046] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0047] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0048] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An integrated cold station constant pressure water replenishing device, comprising a water inlet pipeline (1), a water outlet pipeline (2), a water replenishing pump (3) and an expansion water tank (4), characterized in that, The water inlet pipeline (1) is connected with a buffer tank (5), the buffer tank (5) is connected in parallel with a first filter assembly (6) and a second filter assembly (7), the first filter assembly (6) and the second filter assembly (7) are respectively connected with a first electromagnetic valve (61) and a second electromagnetic valve (71).

2. The integrated cold station constant pressure water replenishment device of claim 1, wherein, The first filter assembly (6) and the second filter assembly (7) comprise a filter (62) and a filter box (63), the filter box (63) is provided with an activated carbon filter layer (631), a cotton filter layer (632) and a cation exchange resin layer (633).

3. The integrated cold station constant pressure water replenishment device of claim 2, wherein, The filter (62) is a Y-shaped filter (62), a basket filter (62) or a backwashing filter (62).

4. The integrated cold station constant pressure water replenishment device of claim 3, wherein, The first filter assembly (6) and the buffer tank (5) are connected with a first check valve (64), and the second filter assembly (7) and the buffer tank (5) are connected with a second check valve (72).

5. The integrated cold station constant pressure water replenishment device of claim 1, wherein, A vacuum degassing tank (8) is further included, and the vacuum degassing tank (8) is connected to the water replenishing pump (3) through a backwater pipeline (81).

6. The integrated cold station constant pressure water replenishment device of claim 1, wherein, The water replenishing pump (3) is two, and the two water replenishing pumps (3) are connected in parallel.

7. The integrated cold station constant pressure water replenishment device of claim 1, wherein, An automatic dosing device (9) is connected to the water outlet pipeline (2).

8. The integrated cold station constant pressure water replenishment device of claim 1, wherein, The height of the buffer tank (5) is greater than the height of the expansion water tank (4), and an exhaust valve (51) is connected above the buffer tank (5).

9. The integrated cold station constant pressure water replenishment device of claim 8, wherein, A liquid level sensor (52) is connected to the buffer tank (5), and the liquid level sensor (52) is electrically connected with the first electromagnetic valve (61) and the second electromagnetic valve (71).

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