Wireless automatic control system for heat supply

Abstract

The invention discloses a wireless automatic control system for heat supply, which is characterized in that a medium in a heat source end and a medium in a heating end intersect in a heat exchanger, and the media in the heating end and the heat source end realize heat exchange after passing through the heat exchanger; a sensor group and a wireless valve group are arranged among the heat source end, the heating end and the heat exchanger; the wireless local area network established based on the LoRa wireless technology is adopted, construction and deployment are easy, the site construction amount can be reduced, long-distance and low-power-consumption data transmission can be achieved, signal transmission anti-interference performance is high, and data are stable; wiring is not needed, the construction process is greatly simplified, cost is saved, power consumption is small, the anti-interference capacity is high, the number of sensors can be expanded at any time according to control requirements, and the stability, reliability and intelligence of a thermodynamic system are greatly improved. And especially for old project reconstruction, the construction cost can be saved.

Description

Technical Field

[0001] The invention relates to the technical field of heating systems, and in particular to a wireless automatic control system for heating. Background Art

[0002] The construction process of the traditional heat exchange station control system is relatively complicated. It usually requires the installation of dozens of sensors such as pressure sensors, temperature sensors, liquid level sensors, flooding sensors, control valves, etc. These sensors and temperature control valves are all wired. From the measuring point to the control cabinet, dozens or even hundreds of signal lines and power lines are required. In addition, the wiring in the control cabinet is also complicated and large in number, which can easily cause misconnection or missing connection. On-site wiring requires the use of various specifications of bridges and conduits. This process will incur a lot of labor and material costs, and the construction period is long.

[0003] The strong and weak electrical systems on site are mixed, and various factors such as frequency conversion interference, strong electrical interference, static interference, and grounding interference will affect the data acquisition and control of the control system, reducing the precision and accuracy of the control system data acquisition. This solves the problem that the traditional heat exchange station control system needs to use a large number of pipelines for connection, and the accumulation of a large number of pipelines will reduce the accuracy of the control system data acquisition. Summary of the invention

[0004] In view of the above problems existing in the existing wireless automatic control system for heating, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a wireless automatic control system for heating.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0007] The medium in the heat source end meets the medium in the heating end in the heat exchanger, and the medium in the heating end and the heat source end realize heat exchange after passing through the heat exchanger;

[0008] Among them, a sensor group and a wireless valve group are provided between the heat source end, the heating end and the heat exchanger.

[0009] As a preferred solution of the wireless automatic control system for heating of the present invention, wherein: a primary heat source inlet pipe and a primary heat source return pipe are provided between the heat source end and the heat exchanger;

[0010] Wherein, the primary heat source inlet pipe and the primary heat source return pipe are both provided with a sensor group and a wireless valve group.

[0011] As a preferred solution of the wireless automatic control system for heating of the present invention, wherein: a secondary heating inlet pipe and a secondary heating return pipe are provided between the heating end and the heat exchanger;

[0012] Wherein, the secondary heating inlet pipe and the secondary heating return pipe are both provided with a sensor group and a wireless valve group.

[0013] As a preferred solution of the wireless automatic control system for heating described in the present invention, the sensor group is capable of collecting operating status data of the primary heat source inlet pipe, the primary heat source return pipe, the secondary heating inlet pipe, and the secondary heating return pipe.

[0014] As a preferred solution of the wireless automatic control system for heating of the present invention, the data collected by the sensor group is wirelessly transmitted to the control center.

[0015] As a preferred solution of the wireless automatic control system for heating described in the present invention, the control center is capable of controlling the wireless valve group.

[0016] As a preferred solution of the wireless automatic control system for heating described in the present invention, the secondary heating return pipe is connected to a water supply tank.

[0017] As a preferred solution of the wireless automatic control system for heating described in the present invention, a connecting pipe is provided between the water supply tank and the secondary heating return pipe.

[0018] As a preferred solution of the wireless automatic control system for heating described in the present invention, a wireless liquid level meter is provided in the water supply tank.

[0019] As a preferred solution of the wireless automatic control system for heating described in the present invention, a water replenishment pump is installed on the connecting pipe, and a water replenishment valve is provided at the front end of the water replenishment pump.

[0020] The beneficial effects of the present invention are as follows: by adopting a wireless local area network based on LoRa wireless technology, it is easy to build and deploy, which can not only reduce the amount of on-site construction, but also realize long-distance, low-power data transmission, and the signal transmission has strong anti-interference ability and stable data;

[0021] No wiring is required, which greatly simplifies the construction process and saves costs. It also has low power consumption and strong anti-interference ability. The number of sensors can be expanded at any time according to control needs, which greatly improves the stability, reliability and intelligence of the thermal system. It can save construction costs especially for the renovation of old projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0028] Example 1

[0029] Reference Figure 1 , provides a wireless automatic control system for heating, comprising,

[0030] The medium in the heat source end 100 and the medium in the heating end 300 meet in the heat exchanger 200, and the medium in the heating end 300 and the heat source end 100 realize heat exchange after passing through the heat exchanger 200;

[0031] Among them, a sensor group and a wireless valve group are provided between the heat source end 100, the heating end 300 and the heat exchanger 200;

[0032] The sensor group is used to monitor the pipelines between the heat source end 100, the heating end 300 and the heat exchanger 200 in real time. The sensor group transmits the collected data to the control center, and the staff remotely controls the wireless valve group through the control center.

[0033] Furthermore, a primary heat source inlet pipe 101 and a primary heat source return pipe 102 are provided between the heat source end 100 and the heat exchanger 200; wherein, a sensor group and a wireless valve group are provided on both the primary heat source inlet pipe 101 and the primary heat source return pipe 102;

[0034] The sensor group includes a pressure sensor, a temperature sensor, and a flow sensor which are arranged on the primary heat source inlet pipe 101 in sequence from the heat source end 100 to the heat exchanger 200 end; the wireless valve group includes a hand valve arranged between the pressure sensor and the heat source end 100,

[0035] The sensor group includes a pressure sensor, a heat source regulating valve, and a temperature sensor which are arranged on the primary heat source return pipe 102 in sequence from the heat source end 100 to the heat exchanger 200 end; the wireless valve group includes a water valve arranged on the primary heat source return pipe 102, a water valve between the water valve pressure sensor and the heat source end 100, and a heat source regulating valve arranged between the pressure sensor and the temperature sensor;

[0036] The heat source regulating valve can adjust the flow rate by controlling the opening degree of the valve. By adjusting the flow rate, the effect of controlling the water supply temperature can be achieved;

[0037] The temperature sensor is directly inserted into the medium to measure the temperature, and then transmits the measured temperature to the control center through wireless transmission;

[0038] The pressure sensor is used to measure the pipeline pressure, and then transmit the measured specific pressure value to the control center through wireless transmission;

[0039] The flow sensor is used to measure the flow in the pipeline and transmit the measured data to the control center. The control center adjusts the valve opening according to the system needs to achieve the purpose of controlling the flow.

[0040] Furthermore, a secondary heating inlet pipe 301 and a secondary heating return pipe 302 are provided between the heating end 300 and the heat exchanger 200; wherein, a sensor group and a wireless valve group are provided on both the secondary heating inlet pipe 301 and the secondary heating return pipe 302;

[0041] The sensor group includes a pressure sensor, a temperature sensor, and a flow sensor which are arranged on the secondary heating return pipe 302 in sequence from the heat exchanger 200 end to the heating end 300, and a return valve is arranged between the flow sensor and the heating end 300;

[0042] The sensor group also includes a pressure sensor and a temperature sensor which are arranged on the secondary heating inlet pipe 301 in sequence from the heat exchanger 200 end to the heating end 300, and a heat source regulating valve and a water inlet valve are arranged in sequence from the temperature sensor to the heating end 300; wherein, the functions of the pressure sensor, the temperature sensor, the flow sensor, and the heat source regulating valve in this embodiment are the same as those described above;

[0043] In this embodiment, two groups of heating pumps are provided between the pressure sensor on the secondary heating inlet pipe 301 and the heat exchanger 200. A patch temperature sensor is installed on the heating pump, which is used to collect the temperature of the water pump body and transmit the specific value of the measured temperature to the control center by wireless transmission. When the temperature of the water pump body exceeds the set value (settable), an alarm is issued. The alarm signal is sent by the control center to prevent the water pump body temperature from being too high and reducing the service life of the water pump.

[0044] Furthermore, the sensor group can collect operating data of the primary heat source inlet pipe 101, the primary heat source return pipe 102, the secondary heating inlet pipe 301, and the secondary heating return pipe 302;

[0045] In this embodiment, the sensor group is also wirelessly connected to a wireless gateway. The wireless gateway establishes communication with the sensor terminal through modulation spread spectrum technology, uploads it to the control center, and transmits the control center's instructions to the department's execution terminal (such as wireless valve groups and sensor groups, etc.) to achieve remote monitoring and control.

[0046] Furthermore, the data collected by the sensor group is wirelessly transmitted to the control center; the control center can control the wireless valve group; the sensor group has a built-in LoRa module to communicate wirelessly with the wireless gateway. Traditional control centers have point restrictions, but this wireless control system can connect 256 wireless sensors.

[0047] The control center monitors the terminal data in real time and can issue commands at any time to control the valve opening, water tank water replenishment start and stop, etc., and then automatically adjust the temperature of the heat exchanger 200 according to the set requirements to meet the system requirements;

[0048] Furthermore, the secondary heating return pipe 302 is connected to a water replenishment tank 400; the water replenishment tank 400 can replenish water in the pipeline in a timely manner to prevent the amount of water in the pipeline from being too low, thereby ensuring the stable operation of the equipment.

[0049] By adopting a wireless LAN based on LoRa wireless technology, it is easy to build and deploy, which can not only reduce the amount of on-site construction, but also achieve long-distance, low-power data transmission, and the signal transmission has strong anti-interference and stable data;

[0050] No wiring is required, which greatly simplifies the construction process and saves costs. It also has low power consumption and strong anti-interference ability. The number of sensors can be expanded at any time according to control needs, greatly improving the stability, reliability and intelligence of the thermal system. Especially for the renovation of old projects, it can save construction costs, reduce the number of pipeline openings in old renovation projects, and does not damage the existing cable trays of old equipment. It can also monitor the operation of old equipment, analyze the operating status, and make reasonable suggestions to reduce energy waste and environmental pollution. In addition, due to the limitations of physical interfaces, traditional control systems can only connect a very limited number of sensors. If you need to increase the number, you need to purchase additional modules or purchase an additional system. This system has no physical interface and can connect a large number of various sensors.

[0051] Example 2

[0052] Reference Figure 1 ,This embodiment is different from the first embodiment in that: in this embodiment, the sensor group also includes a flood-proof sensor, which is used to monitor indoors such as the heat exchange station, monitor whether the indoors are flooded, and feed back the indoor conditions to the control center through wireless transmission;

[0053] The wireless outdoor temperature sensor installed outdoors is used to measure the outdoor temperature and then transmit the measured temperature to the control center through wireless transmission. After receiving the specific temperature value, the control center will establish a climate compensation curve as the basic basis for heat source regulation. With the real-time changes in the outdoor climate temperature, the secondary network heat load also changes accordingly, achieving the purpose of energy saving and consumption reduction.

[0054] The rest of the structure is the same as that of Example 1.

[0055] Example 3

[0056] Reference Figure 1 , this embodiment is different from the above embodiments in that: a connecting pipe is provided between the water supply tank 400 and the secondary heating return pipe 302;

[0057] A wireless liquid level meter is provided in the water supply tank 400;

[0058] A water supply pump is installed on the connecting pipe, and a water supply valve is provided at the front end of the water supply pump;

[0059] The wireless liquid level meter can detect the water tank liquid level in real time and transmit the liquid level information to the control center via wireless transmission. When the water tank liquid level is lower than the lower limit, the control center issues a command to start the water replenishment pump. When the water level reaches the upper limit of the water tank, the control center issues a command to stop the water replenishment pump. The water replenishment valve can control the opening and closing of the pipeline from the water replenishment tank 400 to the secondary heating inlet pipe 301.

[0060] The rest of the structure is the same as that of Example 2.

[0061] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0062] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0063] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wireless automatic control system for heating, characterized in that: include, The medium in the heat source end (100) and the medium in the heating end (300) meet in the heat exchanger (200), and the medium in the heating end (300) and the medium in the heat source end (100) exchange heat after passing through the heat exchanger (200); Wherein, a sensor group and a wireless valve group are provided between the heat source end (100), the heating end (300) and the heat exchanger (200).

2. The wireless automatic control system for heating according to claim 1, characterized in that: A primary heat source inlet pipe (101) and a primary heat source return pipe (102) are provided between the heat source end (100) and the heat exchanger (200); Wherein, the primary heat source inlet pipe (101) and the primary heat source return pipe (102) are both provided with a sensor group and a wireless valve group.

3. The wireless automatic control system for heating according to claim 2, characterized in that: A secondary heating inlet pipe (301) and a secondary heating return pipe (302) are provided between the heating end (300) and the heat exchanger (200); Wherein, the secondary heating inlet pipe (301) and the secondary heating return pipe (302) are both provided with a sensor group and a wireless valve group.

4. The wireless automatic control system for heating according to claim 3, characterized in that: The sensor group is capable of collecting operating status data of the primary heat source inlet pipe (101), the primary heat source return pipe (102), the secondary heating inlet pipe (301), and the secondary heating return pipe (302).

5. The wireless automatic control system for heating according to claim 4, characterized in that: The data collected by the sensor group is wirelessly transmitted to the control center.

6. The wireless automatic control system for heating according to claim 5, characterized in that: The control center can control the wireless valve group.

7. The wireless automatic control system for heating according to claim 6, characterized in that: The secondary heating return pipe (302) is connected to a water replenishment tank (400).

8. The wireless automatic control system for heating according to claim 6 or 7, characterized in that: A connecting pipe is provided between the water replenishment tank (400) and the secondary heating return pipe (302).

9. The wireless automatic control system for heating according to claim 8, characterized in that: The water replenishment tank (400) is provided with a wireless liquid level meter.

10. The wireless automatic control system for heating according to claim 9, characterized in that: A water replenishment pump is installed on the connecting pipe, and a water replenishment valve is arranged at the front end of the water replenishment pump.

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