A constant temperature automatic control device for heating stations

Abstract

This utility model relates to the field of constant temperature control technology, specifically a constant temperature automatic control device for heating stations. It includes a constant temperature device and two sets of temperature sensors for collecting the temperature of the heat transfer medium. The two sets of temperature sensors are respectively screwed onto the mounting sleeves of the supply and return water pipes. A core tube is fitted around the outside of each temperature sensor, and a shielding structure is fixed at the bottom of the core tube to protect the sensor probe. A guide plate is fixed at the bottom of the core tube to guide water flow to both sides. The beneficial effects are: the protective plate effectively prevents water flow from directly eroding the temperature sensor probe, improving temperature measurement stability and extending the sensor's service life; multiple sets of semi-circularly arrayed reinforcing ribs are provided on the outside of the protective plate, connected to the outer wall of the core tube, significantly enhancing the rigidity of the protective plate and preventing deformation or damage due to prolonged stress; multiple guide holes are provided on the surface of the protective plate along the water flow direction, allowing water flow to smoothly bypass the sensor through the guide holes, effectively dispersing the impact force.

Description

Technical Field

[0001] This utility model relates to the field of constant temperature control technology, specifically a constant temperature automatic control device for heating stations. Background Technology

[0002] The thermostatic device, as the core control unit in a heating station, mainly consists of an intelligent controller, actuators (such as electric regulating valves or variable frequency pumps), and associated temperature sensors. These sensors are installed on both the supply and return water pipes to collect water temperature data in real time and feed it back to the controller. The heating station centers on a heat exchanger, which is a plate heat exchanger that transfers heat to the secondary user system via a primary heat medium. The thermostatic device uses intelligent control algorithms (such as PID or climate compensation) combined with parameters such as external ambient temperature and user load changes to automatically adjust the primary heat medium flow rate, achieving stable control of the secondary water supply temperature and ensuring residents' heating comfort and energy-efficient system operation. This device can be connected to a remote monitoring platform, enabling unattended operation, remote diagnostics, energy consumption analysis, and on-demand adjustment of the heating station, establishing a closed-loop thermostatic control process from data acquisition and intelligent judgment to execution and adjustment.

[0003] However, in the existing technology, temperature sensors are usually screwed onto the installation sleeve of the water supply or return pipe, and some are also welded or plugged in. The probe of the temperature sensor extends into the pipe, and due to the high flow rate of hot water, the sensor is prone to shaking or damage. Utility Model Content

[0004] The purpose of this utility model is to provide a constant temperature automatic control device for heating stations to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a constant temperature device and two sets of temperature sensors for collecting the temperature of the heat transfer medium. The two sets of temperature sensors are respectively screwed onto the installation sleeves of the water supply pipe and the return pipe. A core tube is sleeved on the outside of the temperature sensor, and a shielding structure is fixed at the bottom of the core tube to protect the probe of the temperature sensor. A guide plate is fixed at the bottom of the core tube to guide water to both sides.

[0006] Preferably, the outer ring of the core tube and the inner ring of the mounting sleeve are screwed together, and the screwing position is located at the opening of the mounting sleeve.

[0007] Preferably, the mounting sleeve is inclined, and the angle of inclination is an obtuse angle with the direction of water flow in the pipe.

[0008] Preferably, the shielding structure includes a protective plate, reinforcing ribs, and flow guide holes. The protective plate is fixed to the bottom end of the core tube. The protective plate is a semi-circular ring with an arc-shaped cross-section, and both ends of the protective plate protrude outwards from the middle. The outermost ring of the protective plate is tangent to the outer ring of the core tube. The height of the protective plate is higher than the probe of the temperature sensor. The orientation of the protective plate is opposite to the direction of water flow in the pipe. Multiple sets of flow guide holes are provided. The flow guide holes are opened and penetrate through the surface of the protective plate, and their direction is flush with the direction of water flow in the pipe. One end of the reinforcing rib is connected to the outer ring of the core tube, and the other end of the reinforcing rib is connected to the outer surface of the protective plate. Multiple sets of reinforcing ribs are provided, and the reinforcing ribs are arranged in a semi-circular array around the central axis of the protective plate.

[0009] Preferably, the guide plate has a semi-circular structure, the height of the guide plate is equal to the height of the protective plate, and the orientation of the guide plate is the same as that of the protective plate. The guide plate is located between the protective plate and the probe of the temperature sensor.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The constant temperature automatic control device for heating stations proposed in this utility model effectively prevents water flow from directly eroding the temperature sensor probe through a protective plate, thereby improving temperature measurement stability and extending the sensor's service life. Multiple sets of reinforcing ribs arranged in a semi-circular array on the outer side of the protective plate are connected to the outer wall of the core tube, significantly enhancing the rigidity of the protective plate and preventing it from deforming or being damaged due to prolonged stress. The surface of the protective plate has multiple guide holes arranged along the water flow direction, allowing the water flow to smoothly bypass the sensor through the guide holes, effectively dispersing the impact force. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the constant temperature device of this utility model;

[0014] Figure 3 This utility model Figure 2 A top-view structural diagram;

[0015] Figure 4 This utility model Figure 3 Schematic diagram of the cross-sectional structure along the middle AA direction;

[0016] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0017] Figure 6 This is a schematic diagram of the temperature sensor structure of this utility model;

[0018] Figure 7 This is a schematic diagram of the protective structure of this utility model.

[0019] In the diagram: 1. Thermostatic device; 2. Water supply pipe; 3. Water return pipe; 4. Temperature sensor; 5. Mounting sleeve; 6. Core tube; 7. Protective plate; 8. Flow guide hole; 9. Reinforcing rib; 10. Flow guide plate. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example 1

[0021] Please see Figures 1 to 7 This utility model provides a technical solution: a constant temperature automatic control device for a heating station, including a constant temperature device 1 and two sets of temperature sensors 4 for collecting the temperature of the heat medium. The two sets of temperature sensors 4 are respectively screwed onto the mounting sleeves 5 of the water supply pipe 2 and the return pipe 3. A core tube 6 is sleeved on the outside of the temperature sensor 4. The outer ring of the core tube 6 is screwed onto the inner ring of the mounting sleeve 5. The screwing position is located at the opening of the mounting sleeve 5.

[0022] Specifically, the constant temperature device 1 consists of an intelligent controller, an actuator, and a temperature sensor 4. The intelligent controller receives water supply, return water, and outdoor temperature data, and calculates the appropriate heating capacity in real time. The actuator is a variable frequency control cabinet in conjunction with a circulating pump. The temperature sensor 4 consists of a temperature probe, thermocouple, or thermistor, and is installed on the water supply pipe 2 and the return water pipe 3 to collect the current temperature of the heat medium in real time. The temperature sensor 4 is a PT100 model. Heating stations typically use plate heat exchangers to transfer heat from the primary heat source (such as boiler hot water) to the secondary water supply system. The constant temperature control device controls the heat exchange capacity by adjusting the flow rate of the heat medium on the primary side. The temperature sensor 4 is installed on the water supply pipe 2 and the return water pipe 3 to detect the current water temperature in real time. For example, if the water supply temperature is 70°C and the return water temperature is 50°C, the measured data is transmitted to the constant temperature controller via cable or wireless module. The controller analyzes the temperature data in real time and compares it with the set target temperature (such as 65°C). The PID algorithm inside the controller calculates the required adjustment amount based on the temperature difference. For example, if the water supply temperature is higher than the set value, the controller will output a command to reduce the valve opening or decrease the circulation pump speed; if the temperature is too low, the opening or pump speed will be increased. After receiving the signal from the controller, the actuator starts to act: the electric regulating valve automatically adjusts the inlet water volume of the primary hot water, the speed regulating circulation pump changes the flow rate of the heat medium, and the hot water temperature changes due to the action of the actuator. The new temperature is collected by the sensor again and fed back to the controller, forming a closed-loop regulation process until the temperature stabilizes near the target value. The constant temperature device 1 uses the Chromalox 4081 / 4082 model, and the control mode is a general PID controller, which is existing technology. The water supply pipe 2 delivers water to the user end, and the return water pipe 3 recovers the water to the heat exchanger. Example 2

[0023] Based on Embodiment 1, in order to protect the probe of the temperature sensor, it is proposed that the mounting sleeve 5 is inclined, with the angle of inclination forming an obtuse angle with the direction of water flow in the pipe. A shielding structure is fixed at the bottom end of the core tube 6 to protect the probe of the temperature sensor 4. The shielding structure includes a protective plate 7, a reinforcing rib 9, and a flow guide hole 8. The protective plate 7 is fixed at the bottom end of the core tube 6. The protective plate 7 is a semi-circular ring with an arc-shaped cross-section, and both ends of the protective plate 7 protrude outwards from the middle. The outermost ring of the protective plate 7 is tangent to the outer ring of the core tube 6. The height of the protective plate 7 is higher than the probe of the temperature sensor 4, and the orientation of the protective plate 7 is opposite to the direction of water flow in the pipe. Multiple sets of flow guide holes 8 are provided. The flow guide holes 8 are opened and penetrate the surface of the protective plate 7, and their direction is flush with the direction of water flow in the pipe. One end of the reinforcing rib 9 is connected to the outer ring of the core tube 6, and the other end of the reinforcing rib 9 is connected to the outer surface of the protective plate 7. Multiple sets of reinforcing ribs 9 are provided. The reinforcing ribs 9 are arranged in a semi-circular array around the central axis of the protective plate 7. A flow guide plate 10 is fixed at the bottom of the core tube 6 to guide water to both sides. The flow guide plate 10 has a semi-circular ring structure. The height of the flow guide plate 10 is equal to the height of the protective plate 7, and the orientation of the flow guide plate 10 is the same as the orientation of the protective plate 7. The flow guide plate 10 is located between the protective plate 7 and the probe of the temperature sensor 4.

[0024] Specifically, the protective plate 7 effectively prevents water flow from directly scouring the temperature sensor probe 4, improving temperature measurement stability and extending the sensor's service life. Multiple sets of reinforcing ribs 9 arranged in a semi-circular array are provided on the outer side of the protective plate 7, which are connected to the outer wall of the core tube 6, significantly enhancing the rigidity of the protective plate 7 and preventing it from deforming or being damaged due to prolonged stress. The surface of the protective plate 7 is provided with multiple guide holes 8 arranged along the water flow direction, allowing the water flow to smoothly bypass the sensor 4 through the guide holes 8, effectively dispersing the impact force.

[0025] During use, the protective plate 7 effectively prevents water flow from directly scouring the temperature sensor probe 4, improving temperature measurement stability and extending the sensor's service life. Multiple sets of reinforcing ribs 9 arranged in a semi-circular array are provided on the outer side of the protective plate 7, which are connected to the outer wall of the core tube 6, significantly enhancing the rigidity of the protective plate 7 and preventing it from deforming or being damaged due to prolonged stress. The surface of the protective plate 7 is provided with multiple guide holes 8 arranged along the water flow direction, allowing the water flow to smoothly bypass the sensor 4 through the guide holes 8, effectively dispersing the impact force.

[0026] 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 constant temperature automatic control device for a heating station, comprising a constant temperature device (1) and two sets of temperature sensors (4) for collecting the temperature of the heat medium, wherein the two sets of temperature sensors (4) are respectively screwed onto the mounting sleeves (5) of the water supply pipe (2) and the return pipe (3), characterized in that: The temperature sensor (4) is fitted with a core tube (6) on the outside. A shielding structure is fixed at the bottom of the core tube (6) to protect the probe of the temperature sensor (4). A guide plate (10) is fixed at the bottom of the core tube (6) to guide water to both sides.

2. The thermostatic automatic control device for a heating station according to claim 1, characterized in that: The outer ring of the core tube (6) and the inner ring of the mounting sleeve (5) are screwed together, and the screwing position is located at the opening of the mounting sleeve (5).

3. The thermostatic automatic control device for a heating station according to claim 2, characterized in that: The installation sleeve (5) is inclined, and the angle of inclination is obtuse to the direction of water flow in the pipe.

4. The thermostatic automatic control device for a heating station according to claim 1, characterized in that: The shielding structure includes a protective plate (7), reinforcing ribs (9), and flow guide holes (8). The protective plate (7) is fixed to the bottom end of the core tube (6). The protective plate (7) is a semi-circular ring with an arc-shaped cross section. Both ends of the protective plate (7) protrude outward from the middle. The outermost ring of the protective plate (7) is tangent to the outer ring of the core tube (6). The height of the protective plate (7) is higher than the probe of the temperature sensor (4). The orientation of the protective plate (7) is opposite to the direction of water flow in the pipe. Multiple sets of flow guide holes (8) are provided. The flow guide holes (8) are opened and penetrate the surface of the protective plate (7). Their direction is flush with the direction of water flow in the pipe. One end of the reinforcing rib (9) is connected to the outer ring of the core tube (6), and the other end of the reinforcing rib (9) is connected to the outer surface of the protective plate (7). Multiple sets of reinforcing ribs (9) are provided. The reinforcing ribs (9) are arranged in a semi-circular array around the central axis of the protective plate (7).

5. The thermostatic automatic control device for a heating station according to claim 4, characterized in that: The guide plate (10) has a semi-circular structure. The height of the guide plate (10) is equal to the height of the protective plate (7), and the orientation of the guide plate (10) is the same as that of the protective plate (7). The guide plate (10) is located between the protective plate (7) and the probe of the temperature sensor (4).

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