A water replenishing device for a water replenishing tank of a heat exchange station

Abstract

The utility model discloses a kind of water replenishing device for heat exchange station water replenishing tank, including water replenishing tank, water replenishing tank top is fixed with water storage tank, water replenishing tank and water storage tank top side are all opened with water inlet, water replenishing tank and water storage tank bottom side are all opened with water outlet, water inlet inboard is equipped with float ball valve, the water outlet of water storage tank bottom and the water inlet of water replenishing tank are connected by pipeline, the top wall of the float ball of water storage tank is located in the float ball valve and is equipped with normally closed switch, water replenishing tank body side is successively equipped with water pump, water softener and filter core, normally closed switch and water pump are electrically connected, adopt the mechanical linkage cooperation of float ball valve and normally closed switch and water pump to realize automatic control, reduce the use of complex electronic control component and actuating mechanism, reduce system failure rate, improve the reliability of long-term operation, simplify structure, reduce manufacturing cost and maintenance difficulty.

Description

Technical Field

[0001] This utility model belongs to the field of water replenishment technology for heat exchange station water tanks, specifically relating to a water replenishment device for a heat exchange station water replenishment tank. Background Technology

[0002] The makeup water tank in a heat exchange station is a crucial device for maintaining stable circulating water volume and system pressure in a heating system, and its makeup water typically employs an automatic control strategy. In the prior art, automatic makeup water devices are widely used; for example, Chinese invention patent CN116753559A discloses a makeup water system with automatic control and filtration functions. Such devices typically achieve automatic liquid level regulation through the coordinated use of a fixed connecting plate, a second trigger element, a second trigger switch, and a water pump, and are equipped with a filtration assembly to perform preliminary impurity removal from the makeup water.

[0003] However, the existing water replenishment devices still have certain limitations. On the one hand, their system composition typically includes multiple electronic control components and actuators, resulting in a complex overall structure. This not only increases manufacturing costs but also poses challenges to long-term operational reliability and ease of maintenance. On the other hand, and more importantly, while these devices possess basic filtration functions and can remove suspended particulate matter from the water, they do not effectively treat scale-forming ions such as calcium and magnesium. After the replenishment water enters the system, it is repeatedly heated and circulated in the heat exchange circulation pipes, making it easy for hardness ions to precipitate and form scale. Under long-term operation, scale continuously deposits on the inner walls of the pipes and the surface of the heat exchange equipment, not only reducing the flow cross-section and increasing water flow resistance, leading to increased energy consumption, but also, in severe cases, causing pipe blockage or a significant decrease in equipment heat transfer efficiency, affecting the stability and energy efficiency of the entire heating system.

[0004] Therefore, it is necessary to develop a water replenishment tank and water replenishment device with a simpler structure and water softening function to address the above problems, so as to reduce maintenance costs and fundamentally alleviate the risk of scaling in the heat exchange system. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water replenishment device for a heat exchange station's water replenishment tank, comprising a water replenishment tank, a storage tank fixed to the top of the water replenishment tank, water inlets on one side of the top of both the water replenishment tank and the storage tank, water outlets on one side of the bottom of both the water replenishment tank and the storage tank, a float valve installed inside the water inlet, the water outlet at the bottom of the storage tank and the water inlet of the water replenishment tank being connected by a pipe, a normally closed switch installed on the top wall of the storage tank directly above the float of the float valve, and a water pump, a water softener and a filter element sequentially installed on one side of the water replenishment tank, with the normally closed switch and the water pump being electrically connected.

[0006] As a preferred embodiment of this utility model, the outlet of the water pump and the inlet of the water tank are connected by a pipe, and the inlet of the water pump and the outlet of the water softener, as well as the inlet of the water softener and the outlet of the filter element, are all connected by pipes.

[0007] In a preferred embodiment of this invention, the pipes and interfaces between the water storage tank, the water replenishment tank, the water pump, the water softener, and the filter element are all connected by flanges.

[0008] As a preferred embodiment of this invention, a control valve is installed at the water inlet end of the filter element.

[0009] As a preferred technical solution of this utility model, the bottom of the water tank, water pump, water softener and filter element is fixed with a skid-mounted platform, and the four corners of the skid-mounted platform are all fixed with lifting lugs.

[0010] As a preferred embodiment of this utility model, a load-bearing frame is provided on the outside of the water tank, the bottom of the load-bearing frame is fixed to the skid-mounted platform, and the water tank body is fixed to the top of the load-bearing frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) This utility model uses the mechanical linkage of float valve and normally closed switch to cooperate with water pump to achieve automatic control, which reduces the use of complex electronic control components and actuators, reduces the system failure rate, improves the reliability of long-term operation, simplifies the structure, and reduces manufacturing costs and maintenance difficulty.

[0013] (2) Through the combined design of filter cartridge and water softener, suspended impurities in the water are first filtered out, and then scale-causing ions such as calcium and magnesium are removed by water softener, which effectively reduces the hardness of the makeup water. This avoids the problem of scale deposition caused by repeated heating of hard water after it enters the heat exchange system, reduces the risk of reduced pipe flow cross-section, increased resistance and decreased heat exchange efficiency, extends the service life of heat exchange equipment and pipelines, and improves the energy efficiency and stability of the heating system.

[0014] (3) The core components are integrated into the skid-mounted platform and are equipped with lifting lugs at the four corners, which facilitates overall transportation, hoisting and on-site installation; the components are connected by flanges, which facilitates disassembly, maintenance and component replacement; the setting of the load-bearing frame further improves the structural stability of the water storage tank and the water replenishment tank, and ensures the accuracy of liquid level control; the water replenishment process is fully automatic through liquid level linkage control, without the need for manual intervention, which reduces manpower input and is suitable for unattended or minimally manned operation scenarios of heat exchange stations, thus improving operation and maintenance efficiency. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the water tank in this utility model;

[0018] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0019] In the diagram: 1. Water supply tank; 2. Water storage tank; 3. Water inlet; 4. Water outlet; 5. Float valve; 6. Normally closed switch; 7. Water pump; 8. Water softener; 9. Filter element; 10. Control valve; 11. Skid-mounted platform; 12. Lifting lug; 13. Load-bearing frame. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example

[0022] Please see Figure 1-3 The present invention provides the following technical solution: a water replenishment device for a heat exchange station water replenishment tank, comprising a water replenishment tank 1, a water storage tank 2 fixed on the top of the water replenishment tank 1, an inlet 3 on one side of the top of both the water replenishment tank 1 and the water storage tank 2, an outlet 4 on one side of the bottom of both the water replenishment tank 1 and the water storage tank 2, a float valve 5 installed inside the inlet 3, the outlet 4 at the bottom of the water storage tank 2 and the inlet 3 of the water replenishment tank 1 connected by a pipe, a normally closed switch 6 installed on the top wall of the water storage tank 2 directly above the float of the float valve 5, a water pump 7, a water softener 8 and a filter element 9 sequentially installed on one side of the water replenishment tank 1, and an electrically connected normally closed switch 6 and water pump 7.

[0023] In order to construct a complete softened water delivery path and ensure that the water filtered by filter element 9 and softened by water softener 8 can be smoothly delivered to water storage tank 2 under the power of water pump 7, and realize the effective connection between water pretreatment and water storage, in this embodiment, as a preferred technical solution of the present invention, the water outlet of water pump 7 and the water inlet 3 of water storage tank 2 are connected by a pipe, and the water inlet of water pump 7 and the water outlet of water softener 8, and the water inlet of water softener 8 and the water outlet of filter element 9 are all connected by a pipe.

[0024] To ensure the sealing and structural integrity of the pipe connections between components, and to facilitate the disassembly, inspection and maintenance of the pipes and connections in the future, in this embodiment, as a preferred technical solution of this utility model, the pipes and their interfaces between the water storage tank 2, the water replenishment tank 1, the water pump 7, the water softener 8 and the filter element 9 are all connected by flanges.

[0025] In order to achieve flexible control over the water supply to the filter element 9, and to facilitate the shut-off of the water supply when the filter element 9 needs to be cleaned, replaced or repaired, thereby improving the safety and convenience of operation, in this embodiment, as a preferred technical solution of the present invention, a control valve 10 is installed at the water inlet end of the filter element 9.

[0026] In order to integrate the core components such as the water supply tank 1, water pump 7, water softener 8 and filter element 9 into one unit, improve the stability and integrity of the overall structure of the device, and facilitate the overall transportation, hoisting and on-site installation of the device by means of the lifting lugs 12, in this embodiment, as a preferred technical solution of the present invention, the bottom of the water supply tank 1, water pump 7, water softener 8 and filter element 9 is fixed with a skid-mounted platform 11, and the four corners of the skid-mounted platform 11 are all fixed with lifting lugs 12.

[0027] In order to provide stable and reliable support for the water storage tank 2 and ensure that the relative height and position between the water storage tank 2 and the water replenishment tank 1 remain fixed, thereby ensuring the smoothness and stability of the gravity-flow water replenishment from the water storage tank 2 to the water replenishment tank 1, in this embodiment, as a preferred technical solution of the present invention, a load-bearing frame 13 is provided on the outside of the water replenishment tank 1, the bottom of the load-bearing frame 13 is fixed on the skid-mounted platform 11, and the tank body of the water storage tank 2 is fixed on the top of the load-bearing frame 13.

[0028] In summary, based on the above-mentioned technical solution of this utility model, the structural principle and overall operation process are as follows:

[0029] I. Water Pretreatment

[0030] The filtration function of filter element 9: An external water source is connected to the system through control valve 10. After the water pump 7 is started, it generates suction power, driving the water flow into filter element 9. Filter element 9 is equipped with a porous filter medium (such as a polypropylene melt-blown filter element or an activated carbon filter element), which can intercept suspended particulate matter, rust, silt and other solid impurities in the water through physical interception, preventing large particles from entering subsequent pipelines or equipment and causing blockage or wear.

[0031] The softening function of water softener 8: Driven by the continuous power of water pump 7, filtered water flows into water softener 8 through the outlet of filter cartridge 9. Water softener 8 is mainly composed of a resin tank and ion exchange resin (usually sodium-type cation exchange resin) filled in the tank. When the water filtered by filter cartridge 9 enters water softener 8, scale-causing cations (hardness ions) such as calcium and magnesium in the water will undergo an exchange reaction with sodium ions in the resin - the resin adsorbs calcium and magnesium ions and releases sodium ions into the water. Through this ion exchange process, hardness ions in the water are effectively removed, the water hardness is reduced, and scale formation is avoided due to heating after entering the heat exchange system. The softened water is transported from the outlet of water softener 8 to the inlet of water pump 7 to enter the next stage.

[0032] II. Power transmission for water storage and replenishment

[0033] The water pump 7 generates pressure through mechanical work, which provides water flow power for the water pretreatment process of the filter element 9 and water softener 8, and pressurizes and delivers the softened water to the inlet 3 of the water storage tank 2, so that the water storage tank 2 stores a certain amount of softened water. Since the water storage tank 2 is supported on the top of the water replenishment tank 1 by the load-bearing frame 13 (forming a height difference), the softened water in the water storage tank 2 can flow by gravity to the inlet 3 of the water replenishment tank 1, completing the initial water replenishment of the water replenishment tank 1.

[0034] III. Automatic Liquid Level Control Mechanism

[0035] The float valve 5 installed inside the inlet 3 of the water supply tank 1 is a key component for liquid level control. Its structure mainly consists of a float, a connecting rod mechanism, and a valve core: the float floats on the water surface of the water supply tank 1 and is connected to the valve core inside the inlet 3 through the connecting rod.

[0036] When the liquid level in the water supply tank 1 is low: the float ball is at a low position along with the liquid level. The float ball uses gravity to drive the valve core to remain open with the help of the linkage mechanism. The softened water in the storage tank 2 can continuously flow into the water supply tank 1 through the inlet 3. At this time, the float ball does not contact the normally closed switch 6 on the top wall of the storage tank 2. The normally closed switch 6 remains closed, and the water pump 7 continues to work to replenish the softened water in the storage tank 2, ensuring that there is sufficient water in the storage tank 2 to supply water to the water supply tank 1.

[0037] When the liquid level in the water tank 1 rises to the set high level: the float rises to the high level with the liquid level, and the linkage mechanism drives the valve core to gradually close (reduce or cut off the water inlet). At the same time, the float touches the normally closed switch 6 on the top wall of the water tank 2. After the normally closed switch 6 is triggered, the circuit is disconnected, the water pump 7 stops working, and no longer replenishes water to the water tank 2.

[0038] When the water level in the water supply tank 1 drops due to the heat exchange system's circulation consumption: the float falls back with the water level and separates from the normally closed switch 6, the normally closed switch 6 closes again, and the water pump 7 restarts to supply water to the storage tank 2; at the same time, the valve core of the float valve 5 opens as the float falls back, and the softened water in the storage tank 2 flows back into the water supply tank 1, forming a periodic automatic water supply cycle.

[0039] IV. Structural Stability Guarantee

[0040] The load-bearing frame 13 is fixed on the skid-mounted platform 11, and its top supports the water storage tank 2, ensuring the relative height and position stability of the water storage tank 2 and the water replenishment tank 1, ensuring the reliability of gravity-fed water replenishment, and at the same time ensuring that the water replenishment tank 1 does not bear the weight of the water storage tank 2, thus extending the service life of the water replenishment tank 1; the skid-mounted platform 11 integrates the water replenishment tank 1, water pump 7, water softener 8 and other core components into one unit, improving the overall structural stability; the pipes between the components are connected by flanges to ensure reliable sealing, prevent water leakage from affecting operation, and facilitate the maintenance and replacement of any component in the future.

[0041] Finally, it should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water supply device for a heat exchange station's water supply tank, comprising a water supply tank (1), characterized in that: The top of the water replenishment tank (1) is fixed with a water storage tank (2). Both the top of the water replenishment tank (1) and the water storage tank (2) are provided with water inlets (3) and water outlets (4) are provided on the bottom side of the water replenishment tank (1) and the water storage tank (2). A float valve (5) is installed inside the water inlet (3). The water outlet (4) at the bottom of the water storage tank (2) and the water inlet (3) of the water replenishment tank (1) are connected by a pipe. A normally closed switch (6) is installed on the top wall of the water storage tank (2) directly above the float of the float valve (5). A water pump (7), a water softener (8) and a filter element (9) are installed in sequence on one side of the water replenishment tank (1). The normally closed switch (6) and the water pump (7) are electrically connected.

2. A water replenishment device for a heat exchange station's water replenishment tank according to claim 1, characterized in that: The outlet of the water pump (7) and the inlet (3) of the water tank (2) are connected by a pipe. The inlet of the water pump (7) and the outlet of the water softener (8), and the inlet of the water softener (8) and the outlet of the filter element (9) are all connected by a pipe.

3. A water replenishment device for a heat exchange station's water replenishment tank according to claim 2, characterized in that: The pipes and their interfaces between the water storage tank (2), water replenishment tank (1), water pump (7), water softener (8) and filter element (9) are all connected by flanges.

4. A water replenishment device for a heat exchange station's water replenishment tank according to claim 1, characterized in that: The filter element (9) is equipped with a control valve (10) at the water inlet end.

5. A water replenishment device for a heat exchange station's water replenishment tank according to claim 1, characterized in that: The water supply tank (1), water pump (7), water softener (8) and filter element (9) are fixed with a skid-mounted platform (11) at the bottom, and each of the four corners of the skid-mounted platform (11) is fixed with a lifting lug (12).

6. A water replenishment device for a heat exchange station makeup water tank according to claim 5, characterized in that: The water tank (1) is provided with a load-bearing frame (13) on the outside. The bottom of the load-bearing frame (13) is fixed on the skid-mounted platform (11), and the water storage tank (2) is fixed on the top of the load-bearing frame (13).

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