Constant current core supplementing device for central heating

Abstract

The utility model discloses a kind of constant-current core-replenishing devices for central heating, belong to heating core-replenishing device technical field, including shell body component, the inside of shell body component is slidably arranged with cylindrical slide on inner wall, the top of cylindrical slide is supported with spring in the shell body component;The bottom of cylindrical slide is penetrated and is equipped with water flow channel entrance, the sidewall of shell body component is equipped with water flow channel exit;The height of cylindrical slide is greater than the diameter of water flow channel exit.The utility model uses above-mentioned one constant-current core-replenishing device for central heating, simple structure, it is convenient to install use, can solve the problem of central heating system hydraulic imbalance.

Description

Technical Field

[0001] This utility model relates to the technical field of heating core supplementation devices, and in particular to a constant current core supplementation device for centralized heating. Background Technology

[0002] In centralized heating systems, ensuring uniform indoor temperatures and achieving hydraulic balance among all users are crucial for improving heating quality and energy efficiency. With rapid urbanization and the expanding coverage of centralized heating systems, the number of users and the complexity of the pipe network have exacerbated hydraulic imbalance problems.

[0003] Due to differences in the distance between different heat users and the heat source, variations in indoor system resistance, and the influence of factors such as pipe diameter and laying path, it is highly likely that the circulating water velocity for nearby users will be too fast and the flow rate will exceed the standard, resulting in excessively high indoor temperatures and even energy waste. Meanwhile, for distant users, the flow rate will be insufficient, resulting in lower indoor temperatures and failing to meet the design heating standards, creating a phenomenon of "nearby heat and distant cold." This imbalance in hydraulic scheduling not only seriously affects the heating experience for users, leading to a high complaint rate, but also forces heating companies to increase pump head and circulating water volume to balance the demand of distant users, causing a surge in energy consumption and increased operating costs.

[0004] In existing technologies, hydraulic imbalance problems are mostly addressed by using manual regulating valves or traditional flow control devices. However, manual regulating valves require multiple on-site adjustments by professionals, which is time-consuming, labor-intensive, and has limited accuracy, making it difficult to adapt to dynamic changes in the system. Traditional automatic regulating devices generally suffer from problems such as complex structure, additional installation space requirements, and high starting pressure differential (usually greater than 0.05 MPa). These issues not only increase the difficulty of system modification but also further exacerbate energy consumption due to increased pump load, making it difficult to meet the high-efficiency, energy-saving, and convenient operation requirements of centralized heating systems. Summary of the Invention

[0005] The purpose of this invention is to provide a constant current core supplement device for centralized heating, which has a simple structure, is easy to install and use, and can solve the problem of hydraulic imbalance in centralized heating systems.

[0006] To achieve the above objectives, this utility model provides a constant current supplementary core device for centralized heating, including an outer shell assembly. A cylindrical slider is slidably disposed inside the outer shell assembly, close to the inner wall. A spring located inside the outer shell assembly supports the top of the cylindrical slider. A water inlet is formed through the bottom of the cylindrical slider, and a water outlet is formed on the side wall of the outer shell assembly. The height of the cylindrical slider is greater than the diameter of the water outlet.

[0007] Preferably, the outer shell assembly includes a first supplementary core shell and a second supplementary core shell; the first supplementary core shell is a hollow, closed-top, and open-bottom cylindrical structure, the inner diameter of the first supplementary core shell matches the outer diameter of the cylindrical slider, and the water flow channel outlet is opened on the side wall of the first supplementary core shell; the bottom of the first supplementary core shell is embedded and fixed inside the second supplementary core shell, and the bottom of the second supplementary core shell is also an open structure with an inner diameter smaller than the outer diameter of the cylindrical slider.

[0008] Preferably, the first and second core shells are laser-welded together.

[0009] Preferably, a rubber pad is fitted onto the bottom of the outer casing assembly.

[0010] Preferably, the diameter of the water inlet is smaller than the diameter of the water outlet.

[0011] Preferably, the inner side of the cylindrical slider is a hollow structure, and the bottom of the spring is fixed to the inner wall of the bottom of the cylindrical slider.

[0012] Therefore, the beneficial effects of this utility model using the above-mentioned constant current supplementary core device for centralized heating are as follows: (1) The constant flow supplementation device of this utility model can be applied to the centralized heating system to make the flow rate of each heat user's indoor system reach the corresponding design flow rate, reduce the hydraulic imbalance of the centralized heating system, ensure the hydraulic balance among heat users, thereby reducing the complaint rate of heating companies and improving operational efficiency.

[0013] (2) Easy to install. The constant flow supplement device of this utility model is installed in the return water pipe union of the heat user, which does not require installation space, so that each heat user in the centralized heating system can be effectively controlled and achieve the hydraulic balance transformation effect.

[0014] (3) The constant current core supplement device of this utility model can reduce the starting pressure difference to 0.01MPa, reduce the head required for the water pump, and improve the economic benefits of heating enterprises.

[0015] (4) The constant flow core supplement device of this utility model is made of 304 stainless steel, without pressure guide hole design, and the water flow channel is large, so it will not cause blockage problem.

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a constant current supplementary core device for centralized heating according to this utility model; Figure 2This is a cross-sectional schematic diagram of an embodiment of a constant current supplementary core device for centralized heating according to this utility model; Figure 3 This is a schematic diagram of the bottom structure of an embodiment of a constant current supplementary core device for centralized heating according to this utility model.

[0018] Figure Labels 1. First core housing; 2. Second core housing; 3. Rubber pad; 4. Cylindrical slider; 5. Water channel inlet; 6. Water channel outlet; 7. Spring. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] Example 1 like Figure 1 As shown, this utility model provides a constant current supplementary core device for centralized heating, including an outer shell assembly. The outer shell assembly includes a first supplementary core shell 1 and a second supplementary core shell 2. The first supplementary core shell 1 is a hollow, columnar structure with a closed top and an open bottom. The bottom of the first supplementary core shell 1 is embedded and fixed inside the second supplementary core shell 2. In this embodiment, the first supplementary core shell 1 and the second supplementary core shell 2 are laser-welded together to ensure that the first supplementary core shell 1 and the second supplementary core shell 2 will not separate during use, preventing leakage at the connection point of the first supplementary core shell 1 and the second supplementary core shell 2.

[0022] like Figure 2 As shown, a cylindrical slider 4 is slidably disposed inside the first core housing 1, which is close to the inner wall. The inner diameter of the first core housing 1 matches the outer diameter of the cylindrical slider 4, ensuring that the cylindrical slider 4 can slide smoothly inside the first core housing 1 and that there is no leakage between the contact surfaces of the first core housing 1 and the cylindrical slider 4.

[0023] The bottom of the second core housing 2 is also an open structure, and its inner diameter is smaller than the outer diameter of the cylindrical slider 4. The cylindrical slider 4 inside can be limited by the second core housing 2 to prevent it from detaching from the first core housing 1. A rubber pad 3 made of EPDM is fitted on the outer side of the second core housing 2. After installation, it is located at the union pressure ring to prevent water leakage from the union.

[0024] The top of the cylindrical slider 4 is supported by a spring 7 located inside the first core housing 1. In this embodiment, the inner side of the cylindrical slider 4 is a hollow structure. The bottom of the spring 7 is fixed to the inner wall of the bottom of the cylindrical slider 4, and the top is fixed to the inner wall of the top of the first core housing 1. It is used to provide a downward force to the cylindrical slider 4, so that the cylindrical slider 4 is always located at the bottom of the first core housing 1 when the cylindrical slider 4 is not impacted by the water flow.

[0025] like Figure 3 As shown, a water inlet 5 is provided through the bottom of the cylindrical slider 4, and a water outlet 6 is provided on the side wall of the first core housing 1. The height of the cylindrical slider 4 is greater than the diameter of the water outlet 6, ensuring that the opening area of ​​the water outlet 6 can be smoothly adjusted by sliding the cylindrical slider 4. The diameter of the water inlet 5 is smaller than the diameter of the water outlet 6, ensuring that initially, the pressure below the cylindrical slider 4 is greater than the pressure above, facilitating the water flow to push the cylindrical slider 4.

[0026] The first core filler shell 1, the second core filler shell 2, the cylindrical slider 4, and the spring 7 are all made of 304 stainless steel, ensuring high corrosion resistance. The constant flow core filler device in this embodiment comes in various specifications, each with a fixed flow rate. When used in a centralized heating system, the specification must be selected based on the controlled area of ​​the chosen constant flow core filler device. Each specification is labeled with its flow rate corresponding to the controlled area.

[0027] The working principle is as follows: the circulating water of the centralized heating system enters the cavity between the cylindrical slider 4 and the first core housing 1 through the water inlet 5, and then flows out of the core housing through the water outlet 6. Since the constant flow core device is a constant flow product, when the inlet water pressure increases, the cylindrical slider 4 will compress the spring 7, causing the area of ​​the water outlet 6 to decrease, thus maintaining a constant flow rate; conversely, when the inlet water pressure decreases, the spring 7 pushes the cylindrical slider 4 back to its original position, increasing the area of ​​the water outlet 6, thus ensuring a stable flow rate.

[0028] Therefore, the present invention adopts the above-mentioned constant current supplementary core device for centralized heating, which has a simple structure, is easy to install and use, and can solve the problem of hydraulic imbalance in centralized heating systems.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A constant current core-compensating device for centralized heating, characterized in that: The device includes an outer shell assembly, in which a cylindrical slider is slidably disposed against the inner wall of the outer shell assembly. The top of the cylindrical slider is supported by a spring located inside the outer shell assembly. A water inlet is formed through the bottom of the cylindrical slider, and a water outlet is formed on the side wall of the outer shell assembly. The height of the cylindrical slider is greater than the diameter of the water outlet.

2. The constant current supplementary core device for centralized heating according to claim 1, characterized in that: The outer shell assembly includes a first core shell and a second core shell; the first core shell is a hollow, closed-top, and open-bottom cylindrical structure, the inner diameter of the first core shell matches the outer diameter of the cylindrical slider, and the water channel outlet is opened on the side wall of the first core shell; the bottom of the first core shell is embedded and fixed inside the second core shell, and the bottom of the second core shell is also an open structure with an inner diameter smaller than the outer diameter of the cylindrical slider.

3. A constant current supplementary core device for centralized heating according to claim 2, characterized in that: The first and second core shells are laser-welded together.

4. The constant current supplementary core device for centralized heating according to claim 1, characterized in that: A rubber pad is fitted onto the bottom of the outer casing assembly.

5. A constant current supplementary core device for centralized heating according to claim 1, characterized in that: The diameter of the water inlet is smaller than the diameter of the water outlet.

6. A constant current core-compensating device for centralized heating according to claim 1, characterized in that: The inner side of the cylindrical slider is hollow, and the bottom of the spring is fixed to the inner wall of the bottom of the cylindrical slider.

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