Temperature-sensing water pressure control circulating device

Abstract

The utility model provides a temperature-sensing water pressure control circulation device, and relates to the technical field of water circulation control. Comprising a circulating pipeline and a booster pump connected in the circulating pipeline, the booster pump comprises a pump body connected with a motor, a control box electrically connected with the motor is arranged on the pump body, and a pressure tank is connected to the pump body; a water inlet is further formed in the pump body in the radial direction and used for being connected to a water source, and a water outlet and an integrated temperature-sensing water pressure sensor are arranged at the position, connected with the pressure tank, of the pump body. And the temperature-sensing water pressure sensor is electrically connected to the control box. According to the temperature sensing water pressure control circulation device, the temperature sensing water pressure sensor is introduced, accurate constant pressure control is achieved in the work process of the booster pump, the fault protection function is achieved, and the reliability, stability and safety of the system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water circulation control, in particular to a temperature-sensitive water pressure control circulation device. Background Art

[0002] With the urbanization, there are more and more high-rise buildings. Ordinary water supply systems cannot supply water to high-rise buildings. Therefore, it is necessary to use a booster system, such as a booster pump, water pressure control device, etc., to transport water to high-rise buildings to ensure water use in high-rise buildings.

[0003] The current temperature-sensing water pressure control circulation device, especially the device similar to the booster pump, works on the principle of sensing pressure changes through sensors to control the operation of the pump, thereby achieving an increase. However, this method of relying solely on pressure to achieve the purpose of increasing water pressure can only increase the pressure but cannot control the constant pressure well. On the other hand, if the pressure sensor fails, the entire system may not work properly. For example, if the pressure sensor makes a wrong judgment, the water pump cannot be shut down, and the water in the water pump cavity will be heated by the work of the running water pump until the impeller and the water pump are burned out. Therefore, the utility model proposes a temperature-sensing water pressure control circulation device to at least partially solve the problems that may exist in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a temperature-sensitive water pressure control circulation device, which can propose solutions to the deficiencies of the prior art, accurately control constant pressure, and has a fault protection function, thereby improving the reliability, stability and safety of the system.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A temperature-sensitive water pressure control circulation device, comprising a circulation pipeline and a booster pump connected to the circulation pipeline, the booster pump comprising a pump body connected to a motor, a control box electrically connected to the motor being provided on the pump body, and a pressure tank being connected to the pump body;

[0007] The pump body is also provided with a water inlet in the radial direction for connecting to a water source, and a water outlet and an integrated temperature-sensitive water pressure sensor are provided at a position connected to the pressure tank;

[0008] The temperature-sensitive water pressure sensor is electrically connected to the control box.

[0009] Optionally, the temperature-sensing water pressure sensor includes a sensor housing and a back cover covering one end of the sensor housing, the other end of the sensor housing is provided with an air inlet, a sensor core is provided in the sensor housing, and a pressure sensing element and a temperature sensing element are provided on the sensor core; the pressure sensing element and the temperature sensing element are electrically connected to the control box.

[0010] Optionally, the sensor core is also connected to a circuit board, on which a plurality of electrodes are provided, the pressure sensing element and the temperature sensing element are electrically connected to the electrodes, and the electrodes also provide electrical connection to the control box.

[0011] Optionally, the temperature sensing element is an NTC resistor.

[0012] Optionally, an O-type gasket is further provided on one side of the sensor core located at the air inlet.

[0013] Optionally, the O-ring is a rigid gasket.

[0014] Optionally, the outer side of the air inlet is a threaded structure.

[0015] Optionally, the rear cover is connected to the sensor housing via a threaded structure.

[0016] Optionally, the motor is a variable frequency motor, which is electrically connected to a variable frequency controller disposed in the control box.

[0017] The utility model has at least the following advantages or beneficial effects:

[0018] Through the circulation pipeline and the booster pump connected in the circulation pipeline, the booster pump includes a pump body connected to the motor, the pump body is provided with a control box electrically connected to the motor, and the pump body is connected to a pressure tank; the pump body is also provided with a water inlet in the radial direction for connecting to a water source, and a water outlet and an integrated temperature-sensitive water pressure sensor are provided at the position connected to the pressure tank; the temperature-sensitive water pressure sensor is electrically connected to the control box. The temperature-sensitive water pressure control circulation device realizes precise constant pressure control in the operation of the booster pump by introducing the temperature-sensitive water pressure sensor, and has a fault protection function, thereby improving the reliability, stability and safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a temperature-sensitive water pressure control circulation device provided by an embodiment of the utility model;

[0021] Figure 2 A schematic diagram of a sensor for a temperature-sensitive water pressure control circulation device provided by an embodiment of the utility model;

[0022] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a temperature-sensitive water pressure control circulation device provided by an embodiment of the utility model;

[0023] Figure 4 A schematic diagram of the planar structure of a temperature-sensitive water pressure control circulation device provided by an embodiment of the utility model;

[0024] Figure 5 A schematic diagram of the planar structure of a sensor core of a temperature-sensitive water pressure control circulation device provided by an embodiment of the utility model;

[0025] Figure 6 A schematic diagram of the three-dimensional structure of a sensor core of a temperature-sensing water pressure control circulation device provided in one embodiment of the utility model.

[0026] In the figure, 1. motor; 2. control box; 3. pump body; 4. pressure tank; 5. temperature-sensitive water pressure sensor; 6. water outlet; 7. water inlet; 51. back cover; 52. sensor housing; 53. air inlet; 54. O-ring pad; 55. sensor core; 56. circuit board; 57. electrode. DETAILED DESCRIPTION

[0027] In order to make the objectives, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] Please refer to Figure 1 As shown, a temperature-sensitive water pressure control circulation device is provided for this embodiment, including: a circulation pipeline and a booster pump connected in the circulation pipeline, the booster pump includes a pump body 3 connected to the motor 1, the pump body is provided with a control box 2 electrically connected to the motor 1, and the pump body 3 is connected to a pressure tank 4; the pump body 3 is also provided with a water inlet 7 in the radial direction for connecting to a water source, and a water outlet 6 and an integrated temperature-sensitive water pressure sensor 5 are provided at a position connected to the pressure tank 4; the temperature-sensitive water pressure sensor 5 is electrically connected to the control box 2.

[0030] In this embodiment, the temperature-sensitive water pressure control circulation device introduces a temperature-sensitive water pressure sensor 5 to solve the problems of pressure control and fault protection of the traditional booster pump. Specifically, the traditional booster pump can only be turned on or off according to the pressure change, and cannot achieve accurate constant pressure control. In this application, the temperature-sensitive water pressure sensor 5 detects pressure and temperature as control parameters at the same time, and accurately controls according to the set parameters, so that the system can work stably under the set constant pressure state. If the pressure sensor of the traditional booster pump fails, it may cause the water pump to continue to operate, increasing the risk of damage to the impeller and the water pump. The temperature-sensitive water pressure sensor can not only sense the water pressure change, but also monitor the temperature of the equipment. Once an abnormal situation occurs (such as the temperature of the equipment is too high), the sensor can send a signal and connect to the control box 2, trigger the protection mechanism, and automatically stop the operation of the water pump to avoid possible damage; the temperature-sensitive water pressure sensor 5 can monitor the equipment temperature and water pressure in real time, and intelligently adjust according to the actual working state to maintain the stability of the system. Through timely feedback and control, it is possible to avoid excessive water pressure fluctuations or exceed the set range, and improve the working efficiency and stability of the entire system.

[0031] Example 2

[0032] A temperature-sensitive water pressure control circulation device, wherein reference Figures 2 to 4 As shown, the temperature-sensitive water pressure sensor 5 includes a sensor housing 52 and a back cover 51 covering one end of the sensor housing 52. The other end of the sensor housing 52 is provided with an air inlet 53. A sensor core 55 is provided in the sensor housing 52. A pressure sensing element and a temperature sensing element are provided on the sensor core 55. The pressure sensing element and the temperature sensing element are electrically connected to the control box 2.

[0033] As an example, the temperature-sensing water pressure sensor 5 adopts a modular design and is divided into a pressure sensor module. It exchanges pressure data in real time through IIC communication and MCU. The temperature sensor is embedded in the pressure sensor to form an integrated pressure temperature control sensor, that is, the temperature-sensing water pressure sensor 5. The temperature-sensing water pressure sensor 5 achieves the purpose of constant pressure control by collecting pressure signals and outputting the water pump speed. If the pressure changes significantly, it can judge the user's water usage status and achieve the purpose of automatic start and stop. The temperature sensor is used to assist in judging the status of the water pump. If the pressure sensor makes a wrong judgment, the water pump cannot be shut down, and the water in the water pump cavity will be heated by the running water pump until the impeller and the water pump are burned out. In this application, the change in heat is used to assist in judging the status of the water pump, so as to shut down the water pump and achieve the purpose of protecting the water pump, ensuring that the equipment can work stably for a long time without worrying about failures caused by excessive pump temperature.

[0034] It should also be noted that even if the pressure sensing module is in normal condition, when the temperature of the pump is too high and reaches the shutdown temperature, it will still be controlled to stop working, which can further protect the equipment and avoid further expansion of the fault.

[0035] As a preferred implementation method, refer to Figure 5 and Figure 6 As shown, the sensor core 55 is also connected to a circuit board 56, on which a plurality of electrodes 57 are provided. The pressure sensing element and the temperature sensing element are electrically connected to the electrodes 57, and the electrodes 57 also provide an electrical connection to the control box 2. The temperature sensing element is an NTC resistor, and the above-mentioned NTC resistor (temperature measuring thermistor) is preferably a negative temperature coefficient thermistor with a precision of 10KΩ and 1%.

[0036] It should be noted that the above-mentioned NTC (Negative Temperature Coefficient) resistor is a temperature-sensitive resistor whose resistance value changes with temperature. NTC resistors are very sensitive to temperature changes and can produce significant resistance changes even when the temperature changes are small. This makes it very effective in precise temperature measurement and control. Since NTC resistors have high temperature responsiveness, they can respond quickly to temperature changes. This makes them particularly suitable for applications that require real-time temperature monitoring and control, for example, in addition to the measurement and temperature sensing used in this application, they can also be used in temperature regulators and heat-sensitive devices.

[0037] As a preferred implementation method, refer to Figure 3 and Figure 4 The sensor core 55 is also provided with an O-type gasket 54 on one side of the air inlet 53. The O-type gasket 54 is an O-ring of a rigid gasket, which also has a limiting function, or an O-ring of the same specification with a similar size and relatively hardness. For example, the rigid gasket can be a steel sheet, stainless steel or copper gasket.

[0038] As a preferred implementation method, Figures 2 to 4 As shown, the outer side of the air inlet 53 is a threaded structure. The threaded structure facilitates installation and fixing.

[0039] As a preferred embodiment, the rear cover 51 is connected to the sensor housing 52 via a threaded structure. The threaded structure allows the rear cover 51 and the sensor housing 52 to be more firmly connected.

[0040] As a preferred implementation, the motor 1 is a variable frequency motor, which is electrically connected to a variable frequency controller disposed in the control box 2 .

[0041] It should be noted that a variable frequency motor is an electric motor that can control the speed by adjusting the power supply frequency. On the one hand, it can dynamically adjust the speed according to the actual load demand, avoiding the energy waste caused by the excessive speed of the traditional fixed speed motor. Under light load and partial load conditions, energy saving can be achieved by reducing the speed; on the other hand, by adjusting the power supply frequency, the variable frequency motor can achieve precise speed control to meet the requirements for speed accuracy and stability under different working conditions. This makes the variable frequency motor advantageous in applications that require precise speed control, such as the booster pump in this application; in addition, the variable frequency motor can gradually increase the frequency and voltage when starting, so that the motor 1 starts smoothly, avoiding the current shock and mechanical vibration that may be generated during traditional starting, and extending the service life of the equipment and the motor 1.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0043] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0044] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0045] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0046] The temperature-sensing water pressure control circulation device provided by the utility model is introduced in detail above. The principle and implementation mode of the utility model are explained in detail using specific examples in this article. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A temperature-sensitive water pressure control circulation device, comprising a circulation pipeline and a booster pump connected to the circulation pipeline, characterized in that: The booster pump comprises a pump body (3) connected to a motor (1), a control box (2) electrically connected to the motor (1) is provided on the pump body, and a pressure tank (4) is connected to the pump body (3); The pump body (3) is also provided with a water inlet (7) in the radial direction for connecting to a water source, and a water outlet (6) and an integrated temperature-sensitive water pressure sensor (5) are provided at a position connected to the pressure tank (4); The temperature-sensitive water pressure sensor (5) is electrically connected to the control box (2).

2. The temperature-sensitive water pressure control circulation device according to claim 1, characterized in that: The temperature-sensitive water pressure sensor (5) comprises a sensor housing (52) and a rear cover (51) covering one end of the sensor housing (52); an air inlet (53) is provided at the other end of the sensor housing (52); a sensor core (55) is provided in the sensor housing (52); a pressure sensing element and a temperature sensing element are provided on the sensor core (55); the pressure sensing element and the temperature sensing element are electrically connected to the control box (2).

3. The temperature-sensitive water pressure control circulation device according to claim 2, characterized in that: The sensor core (55) is also connected to a circuit board (56), on which a plurality of electrodes (57) are provided. The pressure sensing element and the temperature sensing element are electrically connected to the electrodes (57), and the electrodes (57) also provide electrical connection to the control box (2).

4. The temperature-sensitive water pressure control circulation device according to claim 2, characterized in that: The temperature sensing element is an NTC resistor.

5. The temperature-sensitive water pressure control circulation device according to claim 2, characterized in that: An O-type pad (54) is also provided on one side of the sensor core (55) located at the air inlet (53).

6. The temperature-sensitive water pressure control circulation device according to claim 5, characterized in that: The O-type gasket (54) is a rigid gasket.

7. The temperature-sensitive water pressure control circulation device according to claim 2 or 5, characterized in that: The outer side of the air inlet (53) is a threaded structure.

8. The temperature-sensitive water pressure control circulation device according to claim 2, characterized in that: The rear cover (51) is connected to the sensor housing (52) via a threaded structure.

9. The temperature-sensitive water pressure control circulation device according to claim 1, characterized in that: The motor (1) is a variable frequency motor, which is electrically connected to a variable frequency controller arranged in the control box (2).

Images