Adjusting device for hydraulic balance of secondary pipe network

Abstract

An adjusting device for hydraulic balance of a secondary pipe network relates to the technical field of secondary pipe networks and comprises a valve body, a water inlet pipe is arranged at one end of the valve body, a water outlet pipe is arranged at the other end of the valve body, the water inlet pipe and the water outlet pipe are both integrally cast with the valve body, and a valve seat is arranged in the valve body. A valve seat is installed on the valve body, a valve element is installed above a center through hole of the valve seat, a valve rod is fixedly arranged at the upper end of the valve element, an adjusting mechanism is arranged above the valve body, the valve rod extends into the adjusting mechanism, the opening degree of the valve seat and the valve element is adjusted through the adjusting mechanism, and a controller is installed on one side of the servo motor. According to the scheme, the problem that a secondary pipe network hydraulic adjusting device cannot conduct self-adaptive adjustment according to different building water supply flows is solved.

Description

Technical Field

[0001] This utility model relates to the field of secondary pipe network technology, specifically to a regulating device for hydraulic balancing in secondary pipe networks. Background Technology

[0002] Secondary piping refers to a branch network in a centralized heating or cooling system, originating from the main primary piping network, used to distribute heat or cooling energy to end users. It connects directly to the heat exchange station in the building or user area, and uses hydraulic balancing devices such as balancing valves, self-regulating flow control valves, and differential pressure control devices to precisely regulate the flow and pressure of each branch pipe, ensuring efficient and uniform energy delivery under different loads. These regulating devices not only optimize the hydraulic characteristics of the piping network but also prevent uneven heating and cooling caused by uneven flow distribution.

[0003] For example, the Chinese authorized patent CN207162692U, entitled "A Balancing and Adjustment System for Secondary Heating Pipeline and Heating Pipeline", includes an outdoor temperature compensator, a main water supply pipe, a main return water pipe, a branch water supply pipe, and a branch return water pipe. The system forms a control system with the outdoor temperature compensator, a circulating pump, and a makeup water pump through an electric three-way valve installed on the main water supply pipe. It solves the control problem of the heat exchange station without moving the electric regulating valve on the primary side. It can realize variable flow regulation of the secondary pipeline according to different user heat demand and outdoor temperature, ensuring balanced and stable heat consumption for heat users.

[0004] While the existing technologies can achieve hydraulic balance regulation, they cannot accurately control the water flow between each building, and therefore cannot adaptively adjust according to the different water supply flow of each building. Thus, they do not meet the current needs. In response, we propose a hydraulic balance regulation device for secondary pipe networks. Utility Model Content

[0005] The purpose of this invention is to provide a regulating device for hydraulic balancing of secondary pipe networks, so as to solve the problem mentioned in the background art that the hydraulic regulating device for secondary pipe networks cannot adaptively adjust according to the different water supply flow rates of buildings.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a regulating device for hydraulic balancing of a secondary pipe network, comprising a valve body, an inlet pipe at one end of the valve body, and an outlet pipe at the other end of the valve body, both the inlet and outlet pipes being integrally cast with the valve body; a valve seat is provided inside the valve body, a valve core is installed above the central through hole of the valve seat, a valve stem is fixedly installed at the upper end of the valve core, an regulating mechanism is provided above the valve body, the valve stem extending into the interior of the regulating mechanism, and the opening and closing degree of the valve seat and the valve core being adjusted by the regulating mechanism; a controller is installed on one side of the servo motor; a buffer mechanism is installed inside the inlet pipe; and a flow sensor is installed outside the outlet pipe.

[0007] Preferably, the controller has a microcontroller installed inside, and the signal output terminal of the flow sensor is connected to the input terminal of the microcontroller. The microcontroller is remotely connected to the control center through a wireless communication module.

[0008] Preferably, a servo motor is fixedly installed at the upper end of the valve body, and the output end of the microcontroller is connected to the input end of the servo motor. The output shaft of the servo motor is equipped with a threaded rod, which extends into the interior of the valve stem and is threadedly connected to the valve stem.

[0009] Preferably, the lower end of the regulating mechanism is provided with sealing packing, and the valve stem passes through the sealing packing.

[0010] Preferably, the buffer mechanism includes a movable plate and a fixed plate. The movable plate is located at the outer end of the fixed plate and slides and limits the water inlet pipe. The fixed plate is fixedly connected to the water inlet pipe. The outer ring inside the movable plate is provided with a first through hole distributed in an annular pattern. The fixed plate is provided with a second through hole at the middle position. A conical block is fixedly installed on the side of the movable plate close to the fixed plate. A return spring is installed on the outside of the conical block, and the two ends of the return spring are fixed to the movable plate and the fixed plate respectively.

[0011] Preferably, the outer ends of both the inlet pipe and the outlet pipe are welded and fixed with connecting flanges.

[0012] Preferably, the output terminal of the microcontroller is also connected to an alarm mechanism, which includes a warning light and a buzzer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model significantly improves the hydraulic balance of the secondary pipe network by real-time monitoring and adjustment of the flow rate in each building, avoiding local overheating or undercooling. By precisely adjusting the flow rate, it avoids unnecessary energy waste, reduces the energy consumption cost of heating or cooling, and the intelligent adjustment system can automatically adapt to changes in pipe network conditions, maintain stable system operation, and reduce failures and downtime. By achieving hydraulic balance and precise adjustment, it enhances the user's heating or cooling experience and improves user satisfaction.

[0015] 2. This utility model incorporates an adjustment mechanism. After the processing center analyzes the hydraulic flow rate, it sends control commands to the controller. The controller drives a servo motor, and the output shaft of the servo motor rotates the threaded rod. Under the friction with the threaded hole inside the valve stem, and in conjunction with the guiding effect of the inner cavity of the adjustment mechanism on the valve stem, the valve core at the bottom of the valve stem moves up and down. The adjustment of the distance between the valve core and the valve seat achieves the opening adjustment, thus precisely regulating the water flow rate. Through the continuous forward and reverse rotation of the servo motor, the opening and closing degree of the valve seat and valve core are adaptively adjusted, achieving dynamic balance regulation of the hydraulic system in the secondary pipe network.

[0016] 3. This utility model, by incorporating a water flow buffer mechanism, ensures that when the water supply flow remains stable, the movable plate and the fixed plate maintain a fixed distance under the support of the return spring. Water can flow into the valve body through the first and second through holes, achieving balanced regulation of the water flow. When the water supply pressure suddenly increases, it preferentially squeezes the movable plate, causing the conical block at one end to move towards the second through hole, thereby reducing the area of ​​the second through hole and slowing down the water supply flow rate. This protects the internal components of the valve body and improves the service life of the entire device. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 For the present utility model Figure 2 Enlarged view of a portion of region A in the middle;

[0020] Figure 4 This is a schematic diagram of the bending support structure of this utility model.

[0021] In the diagram: 1. Valve body; 2. Inlet pipe; 3. Outlet pipe; 4. Adjustment mechanism; 5. Servo motor; 6. Flow sensor; 7. Controller; 8. Valve seat; 9. Valve core; 10. Valve stem; 11. Sealing packing; 12. Threaded rod; 13. Movable plate; 14. First through hole; 15. Conical block; 16. Return spring; 17. Fixed plate; 18. Second through hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 This utility model provides an embodiment of a regulating device for hydraulic balancing in a secondary pipe network, comprising a valve body 1, an inlet pipe 2 at one end of the valve body 1, and an outlet pipe 3 at the other end of the valve body 1. Both the inlet pipe 2 and the outlet pipe 3 are integrally cast with the valve body 1. Connecting flanges are welded to the outer ends of both the inlet pipe 2 and the outlet pipe 3. A valve seat 8 is provided inside the valve body 1, and a valve core 9 is installed above the central through hole of the valve seat 8. A valve stem 10 is fixedly installed at the upper end of the valve core 9. An adjusting device is provided above the valve body 1. The valve stem 10 extends into the regulating mechanism 4, and the opening and closing degree of the valve seat 8 and valve core 9 are adjusted by the regulating mechanism 4. A controller 7 is installed on one side of the servo motor 5, and a flow sensor 6 is installed on the outside of the water outlet pipe 3. A microcontroller is installed inside the controller 7, and the signal output terminal of the flow sensor 6 is connected to the input terminal of the microcontroller. The microcontroller is remotely connected to the control center through a wireless communication module. The output terminal of the microcontroller is also connected to an alarm mechanism, which includes a warning light and a buzzer.

[0024] In operation, flow sensor 6 measures the flow data at the outlet of the regulating valve in real time and transmits the data to the control center. After receiving the data from each flow sensor 6, the control center performs real-time analysis and comparison to determine whether the flow in each building has reached a balanced state. Based on the data analysis results, the control center generates corresponding control commands and sends them to the drive mechanism of the corresponding regulating valve through the communication network. After receiving the control commands, the drive mechanism drives the regulating valve to adjust its opening, thereby achieving precise flow regulation. The system continuously repeats the above process to achieve dynamic balance regulation of the secondary pipe network hydraulics.

[0025] Please see Figure 2A servo motor 5 is fixedly installed at the upper end of the valve body 1, and the output end of the microcontroller is connected to the input end of the servo motor 5. The output shaft of the servo motor 5 is equipped with a threaded rod 12, which extends into the interior of the valve stem 10 and is threadedly connected to the valve stem 10. After the processing center analyzes the hydraulic flow, it sends the control command to the controller, which drives the servo motor 5. The output shaft of the servo motor 5 drives the threaded rod 12 to rotate. Under the friction with the internal threaded hole of the valve stem 10, and with the guiding effect of the inner cavity of the adjustment mechanism 4 on the valve stem 10, the valve core 9 at the bottom of the valve stem 10 moves up and down. The adjustment of the distance between the valve core 9 and the valve seat 8 realizes the opening adjustment and the precise adjustment of the water flow. Through the continuous forward and reverse rotation of the servo motor, the adaptive adjustment of the opening degree of the valve seat and the valve core is realized.

[0026] Please see Figure 2 The lower end of the regulating mechanism 4 is provided with a sealing packing 11, and the valve stem 10 passes through the sealing packing 11 to ensure the sealing of the valve body 1 cavity during the lifting and lowering of the valve stem 10.

[0027] Please see Figure 2 The water inlet pipe 2 is equipped with a buffer mechanism, which includes a movable plate 13 and a fixed plate 17. The movable plate 13 is located at the outer end of the fixed plate 17. The movable plate 13 is slidably limited to the water inlet pipe 2, and the fixed plate 17 is fixedly connected to the water inlet pipe 2. The outer ring inside the movable plate 13 is provided with a first through hole 14 distributed in an annular pattern. The fixed plate 17 is provided with a second through hole 18 at the middle position. A conical block 15 is fixedly installed on the side of the movable plate 13 near the fixed plate 17. A return spring 16 is installed on the outside of the conical block 15, and the two ends of the return spring 16 are fixed to the movable plate 13 and the fixed plate 17 respectively.

[0028] When the water supply flow rate remains stable, the movable plate 13 and the fixed plate 17 maintain a fixed distance under the support of the return spring 16. The water flow can enter the valve body 1 through the first through hole 14 and the second through hole 18 to achieve balanced regulation of the water flow rate. When the water supply pressure suddenly increases, it will first squeeze the movable plate 13, causing the conical block 15 at one end to move towards the second through hole 18, thereby reducing the area of ​​the second through hole 18 and slowing down the water supply flow rate, thus protecting the internal components of the valve body 1.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A regulating device for hydraulic balancing in a secondary pipe network, comprising a valve body (1), characterized in that: One end of the valve body (1) is provided with an inlet pipe (2), and the other end of the valve body (1) is provided with an outlet pipe (3). Both the inlet pipe (2) and the outlet pipe (3) are integrally cast with the valve body (1). The valve body (1) is provided with a valve seat (8) inside. A valve core (9) is installed above the central through hole of the valve seat (8). A valve stem (10) is fixedly installed at the upper end of the valve core (9). An adjustment mechanism (4) is provided above the valve body (1). The valve stem (10) extends into the interior of the adjustment mechanism (4). The opening degree of the valve seat (8) and the valve core (9) is adjusted by the adjustment mechanism (4). A controller (7) is installed on one side of the servo motor (5). A buffer mechanism is installed inside the inlet pipe (2). A flow sensor (6) is installed outside the outlet pipe (3).

2. The regulating device for hydraulic balancing of a secondary pipe network according to claim 1, characterized in that: The controller (7) is equipped with a microcontroller, and the signal output terminal of the flow sensor (6) is connected to the input terminal of the microcontroller. The microcontroller is remotely connected to the control center through a wireless communication module.

3. The regulating device for hydraulic balancing of a secondary pipe network according to claim 2, characterized in that: A servo motor (5) is fixedly installed on the upper end of the valve body (1), and the output end of the microcontroller is connected to the input end of the servo motor (5). A threaded rod (12) is installed on the output shaft of the servo motor (5). The threaded rod (12) extends into the interior of the valve stem (10), and the threaded rod (12) is threadedly connected to the valve stem (10).

4. The regulating device for hydraulic balancing of a secondary pipe network according to claim 1, characterized in that: The lower end of the regulating mechanism (4) is provided with sealing packing (11), and the valve stem (10) passes through the sealing packing (11).

5. The regulating device for hydraulic balancing of a secondary pipe network according to claim 1, characterized in that: The buffer mechanism includes a movable plate (13) and a fixed plate (17). The movable plate (13) is located at the outer end of the fixed plate (17). The movable plate (13) slides and is limited to the water inlet pipe (2). The fixed plate (17) is fixedly connected to the water inlet pipe (2). The outer ring inside the movable plate (13) is provided with a first through hole (14) distributed in an annular pattern. The middle position of the fixed plate (17) is provided with a second through hole (18). A conical block (15) is fixedly installed on the side of the movable plate (13) close to the fixed plate (17). A return spring (16) is installed on the outside of the conical block (15). The two ends of the return spring (16) are fixed to the movable plate (13) and the fixed plate (17) respectively.

6. The regulating device for hydraulic balancing of a secondary pipe network according to claim 1, characterized in that: Both the inlet pipe (2) and the outlet pipe (3) have connecting flanges welded and fixed to their outer ends.

7. A regulating device for hydraulic balancing of a secondary pipe network according to claim 2, characterized in that: The output terminal of the microcontroller is also connected to an alarm mechanism, which includes a warning light and a buzzer.

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