Relay pressurizing device of central heating pipe network

Abstract

The utility model discloses a centralized heating pipe network relay pressurizing device which comprises a working frame, two sets of mounting plates are symmetrically installed on the upper surface of the working frame, a set of first relay pressurizing pumps are installed on the upper surface of one set of mounting plates in a bolting mode, and a set of second relay pressurizing pumps are installed on the upper surface of the other set of mounting plates in a bolting mode. The output end of the first relay pressure pump and the output end of the second relay pressure pump are each provided with a pressurization sealing seat in a sealed mode. According to the relay pressurizing device for the central heating pipe network, the working state of single-group full-force output, two-group synchronous output or two-group full-force output can be selected according to different pressure requirements, so that the selectivity of the pressurizing state is improved; a threaded pressurizing groove is formed in the inner wall of the pressurizing sealing seat to avoid turbulent flow and improve water pumping pressure; the pressure stabilizing tank can supplement pressure and relieve pressure, safety is improved, the control box can automatically adjust operation of the water pump to ensure stable water supply pressure and flow, and a safety protection device and an auxiliary system are arranged.

Description

Technical Field

[0001] This utility model relates to the field of pressurization technology, specifically a relay pressurization device for centralized heating pipe networks. Background Technology

[0002] In centralized heating systems, the length and coverage of heating pipelines are constantly expanding, and the terrain and building layouts are becoming increasingly complex, posing numerous challenges to heat delivery. Traditional centralized heating networks experience a continuous drop in heating medium pressure over long distances due to factors such as pipeline resistance and elevation differences, making it difficult to meet the end-users' demands for stable heating pressure and flow.

[0003] Chinese utility model patent with authorization announcement number CN 218209755 U discloses a relay pressurization device for centralized heating pipeline network, relating to the field of relay pressurization pump technology. The device includes a support plate, a symmetrical control mechanism disposed above the support plate, the control mechanism including a fixed plate, a sliding rod slidably connected to the inner wall of the fixed plate, a limiting pad fixedly connected to the bottom end of the sliding rod, a symmetrical limiting strip fixedly connected to the outer surface of the limiting pad, a handle fixedly connected to the top end of the sliding rod, and a fixing pad fixedly connected to the outer surface of the sliding rod.

[0004] Most of the aforementioned patented relay pressurization devices have limited functions and cannot flexibly meet the pressure demands under different operating conditions, making precise pressure regulation difficult. During operation, turbulent water flow leads to significant energy loss and insufficient pump pressure, affecting heating efficiency. Furthermore, traditional devices lack robust pressure stabilization and safety protection mechanisms. When abnormal fluctuations occur in the pipeline pressure, they cannot be adjusted and protected in a timely manner, easily causing equipment damage or even safety accidents. Therefore, a relay pressurization device for centralized heating networks is needed. Utility Model Content

[0005] The purpose of this utility model is to provide a relay pressurization device for centralized heating pipe networks. By setting a threaded pressurization groove on the inner wall of the pressurization sealing seat to avoid turbulence, the water pump output pressure is increased, and the pressure control state is improved, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a relay pressurization device for a centralized heating network, comprising a working frame, wherein two sets of mounting plates are symmetrically installed on the upper surface of the working frame, wherein a first relay pressurization pump is bolted to the upper surface of one set of mounting plates, and a second relay pressurization pump is bolted to the upper surface of the other set of mounting plates.

[0007] Both the first relay pressurizing pump and the second relay pressurizing pump have pressurizing sealing seats installed at their output ends. The inner wall of the pressurizing sealing seat is provided with several sets of threaded pressurizing grooves with equal arc.

[0008] The pressure sealing seat has an output pipe connected to its output end, a pressure replenishing pipe connected to its upper part, and a pressure stabilizing tank installed in the middle of the pressure replenishing pipe.

[0009] Preferably, a bracket is bolted to the upper surface of the work frame between the two sets of mounting plates, and a control box is bolted to the upper part of the bracket. The control box is electrically connected to the first relay pressurizing pump and the second relay pressurizing pump.

[0010] Preferably, both the first relay pressurizing pump and the second relay pressurizing pump are equipped with conical connecting seats on their output sides, the pressurizing sealing seat is sealed to the conical connecting seat, and a pressurizing connecting pipe is installed through the upper side of the outer arc surface of the pressurizing sealing seat.

[0011] Preferably, the threaded pressure groove is opened at a 35-degree angle, and the depth of the threaded pressure groove is 0.cm, and the side of the threaded pressure groove is rounded.

[0012] Preferably, the output end of the pressure sealing seat is sealed with a switch, and the switch is installed in communication with the output pipe.

[0013] Preferably, a sealing flange is sealed at the top of the pressurizing connection pipe, the sealing flange is sealed to the pressure replenishing pipe, a pointer pressure gauge is installed on the front side of the outer arc of the pressure replenishing pipe corresponding to the installation position of the pressure stabilizing tank, a sensor is installed on the pressure replenishing pipe corresponding to the installation position of the pointer pressure gauge, and the sensor is electrically connected to the control box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This centralized heating network relay pressurization device can select between single-unit full-power output, two-unit synchronous output, or two-unit full-power output modes according to different pressure requirements, improving the selectivity of pressurization mode; the inner wall of the pressurization sealing seat is equipped with a threaded pressurization groove to avoid turbulence and increase the water pump output pressure; the output pipe is connected to the pressure replenishment pipe, and the pressure stabilizing tank can replenish and release pressure, improving safety; the control box can automatically adjust the water pump operation to ensure stable water supply pressure and flow, and is equipped with safety protection devices and auxiliary systems; the conical connecting seat increases the water output and reduces the output pressure of the relay pressurization pump; the special design of the threaded pressurization groove facilitates water pumping and reduces the pump operating pressure; the switch can be used for emergency handling, improving safety; the pointer pressure gauge and sensor are electrically connected to the control box, and the operating mode can be quickly changed in case of abnormal pressure, improving operational sensitivity. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the pressure-reducing pipe installation structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of the pressure stabilizing tank of this utility model;

[0019] Figure 4 This is a schematic diagram of the installation structure of the first relay booster pump and the second relay booster pump of this utility model;

[0020] Figure 5 This is a schematic diagram of the threaded pressure groove structure of this utility model.

[0021] In the diagram: 1. Working frame; 2. Mounting plate; 3. Control box; 4. First relay pressurizing pump; 5. Second relay pressurizing pump; 6. Conical connecting seat; 7. Pressurizing sealing seat; 8. Threaded pressurizing groove; 9. Pressurizing connecting pipe; 10. Switch; 11. Output pipe; 12. Sealing flange; 13. Pressure replenishing pipe; 14. Pressure stabilizing tank; 15. Pointer pressure gauge; 16. Sensor. 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. 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.

[0023] This utility model provides: a relay pressurization device for centralized heating pipe networks, such as... Figures 1-5 As shown, the device includes a work frame 1. Two sets of mounting plates 2 are symmetrically installed on the upper surface of the work frame 1. A first relay pressurizing pump 4 is bolted to the upper surface of one set of mounting plates 2, and a second relay pressurizing pump 5 is bolted to the upper surface of the other set of mounting plates 2. The working state of the first relay pressurizing pump 4 and the second relay pressurizing pump 5 can be set according to different pressure requirements. The working state can be a single relay pressurizing pump at full output, two relay pressurizing pumps at synchronous output, and two relay pressurizing pumps at full output, which greatly improves the selectivity for pressurization state.

[0024] The output ends of the first relay pressurizing pump 4 and the second relay pressurizing pump 5 are both sealed with pressurizing sealing seats 7. The inner wall of the pressurizing sealing seat 7 is provided with several sets of threaded pressurizing grooves 8 with equal arc. The threaded pressurizing grooves 8 inside the pressurizing sealing seat 7 allow the liquid to be sent out at a certain angle to avoid water leakage and turbulence, thereby increasing the pumping pressure of the water.

[0025] The pressure sealing seat 7 has an output pipe 11 connected to its output end. A pressure replenishing pipe 13 is connected to the upper part of the pressure sealing seat 7. A pressure stabilizing tank 14 is installed in the middle of the pressure replenishing pipe 13. The output pipe 11 is connected to the pressure replenishing pipe 13. The pressure stabilizing tank 14 installed in the middle of the pressure replenishing pipe 13 can stabilize the pressure. When the pressure is too weak, it will replenish the pressure. When the pressure is too high, it will release the pressure, thus improving the overall safety of the device.

[0026] Preferably, a bracket is bolted to the upper surface of the work frame 1 between the two sets of mounting plates 2, and a control box 3 is bolted to the upper part of the bracket. The control box 3 is electrically connected to the first relay booster pump 4 and the second relay booster pump 5. The control box 3 is equipped with circuit breakers, contactors, thermal relays, fuses, PLCs, touch screens, relays, terminal blocks, power modules, ammeters, voltmeters, indicator lights, and push-button switches. Monitoring and regulation are performed through the control box 3. The control system automatically adjusts the number of pumps in operation and their speed based on preset pressure or flow values ​​and actual monitored pipeline pressure, flow, and other parameters to ensure stable water supply pressure and flow. For example, When water demand increases and pipeline pressure decreases, the control system increases the number of operating pumps or increases their speed to increase water supply and maintain stable pipeline pressure. Conversely, when water demand decreases, the control system reduces the number of operating pumps or their speed to avoid energy waste and excessive pipeline pressure. In addition, it is equipped with a series of safety protection devices and auxiliary systems, such as an overload protection device that automatically cuts off the power supply when the pump motor is overloaded to protect the motor and equipment; and a water hammer eliminator to prevent water hammer caused by rapid changes in water flow velocity when the pump starts or stops, thus avoiding damage to pipelines and equipment and greatly improving the overall safety of the device.

[0027] Furthermore, both the first relay booster pump 4 and the second relay booster pump 5 are equipped with conical connecting seats 6 on their output sides. The pressurizing sealing seat 7 is sealed to the conical connecting seat 6. A pressurizing connecting pipe 9 is installed through the upper side of the outer arc surface of the pressurizing sealing seat 7. The conical connecting seat 6 can increase the water output and ensure that the water can fill the inner wall of the pressurizing sealing seat 7 after docking. This changes the water state under long-term pressurization and reduces the output pressure of the first relay booster pump 4 and the second relay booster pump 5 by rotating the water uniformly.

[0028] Furthermore, the threaded pressurizing groove 8 is opened at a 25-degree angle, and the depth of the threaded pressurizing groove 8 is 1.25cm. The side of the threaded pressurizing groove 8 is rounded. The depth and angle of the threaded pressurizing groove 8 are designed to allow water to be pumped out better, thereby reducing the operating pressure of the first relay pressurizing pump 4 and the second relay pressurizing pump 5.

[0029] It is worth noting that the pressure sealing seat 7 has a sealed connection to the output end of a switch 10. The switch 10 is connected to the output pipe 11. The installed switch 10 can be used for emergency handling to stop the pump from flowing out, thereby improving the overall safety of the device.

[0030] Specifically, a sealing flange 12 is installed at the top of the pressurizing connection pipe 9, and the sealing flange 12 is sealed to the pressure replenishing pipe 13. A pointer pressure gauge 15 is installed on the front side of the outer arc of the pressure replenishing pipe 13 corresponding to the installation position of the pressure stabilizing tank 14. A sensor 16 is installed on the pressure replenishing pipe 13 corresponding to the installation position of the pointer pressure gauge 15. The sensor 16 is electrically connected to the control box 3. The pointer pressure gauge 15 and the sensor 16 are electrically connected to the control box 3. When the pressure in the pipeline is abnormal, the current operating state can be quickly changed through the control box 3, further improving the sensitivity of the device operation.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A relay pressurization device for a centralized heating network, characterized in that: Includes a work frame (1), on which two sets of mounting plates (2) are symmetrically mounted. A first relay pressurizing pump (4) is bolted to the upper surface of one set of mounting plates (2), and a second relay pressurizing pump (5) is bolted to the upper surface of the other set of mounting plates (2). The output ends of the first relay pressurizing pump (4) and the second relay pressurizing pump (5) are both sealed with pressurizing sealing seats (7), and the inner wall of the pressurizing sealing seat (7) is provided with several sets of threaded pressurizing grooves (8) with equal arc. The pressure sealing seat (7) is connected to an output pipe (11) at its output end, and a pressure replenishing pipe (13) is connected to the upper part of the pressure sealing seat (7). A pressure stabilizing tank (14) is installed in the middle of the pressure replenishing pipe (13).

2. The centralized heating network relay pressurization device according to claim 1, characterized in that: The upper surface of the work frame (1) is bolted to a bracket between two sets of mounting plates (2), and a control box (3) is bolted to the upper part of the bracket. The control box (3) is electrically connected to the first relay pressurizing pump (4) and the second relay pressurizing pump (5).

3. A relay pressurization device for a centralized heating network according to claim 2, characterized in that: The first relay pressurizing pump (4) and the second relay pressurizing pump (5) are both equipped with conical connecting seats (6) on their output sides. The pressurizing sealing seat (7) is sealed to the conical connecting seat (6). A pressurizing connecting pipe (9) is installed through the upper side of the outer arc surface of the pressurizing sealing seat (7).

4. A relay pressurization device for a centralized heating network according to claim 3, characterized in that: The threaded pressure groove (8) is opened at a 25-degree angle, and the depth of the threaded pressure groove (8) is 1.25cm. The side of the threaded pressure groove (8) is rounded.

5. A centralized heating network relay pressurization device according to claim 4, characterized in that: The pressure sealing seat (7) has a switch (10) sealed to its output end, and the switch (10) is connected to the output tube (11).

6. A relay pressurization device for a centralized heating network according to claim 5, characterized in that: The top end of the pressurizing connection pipe (9) is sealed with a sealing flange (12), which is sealed with the pressure replenishing pipe (13). A pointer pressure gauge (15) is installed on the front side of the outer arc of the pressure replenishing pipe (13) corresponding to the installation position of the pressure stabilizing tank (14). A sensor (16) is installed on the pressure replenishing pipe (13) corresponding to the installation position of the pointer pressure gauge (15). The sensor (16) is electrically connected to the control box (3).

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