Anti-idling device and system for circulating pump

Abstract

The invention discloses an anti-idling device and system for a circulating pump, and belongs to the technical field of circulating pumps. According to the circulating pump anti-idling device and system, the electronic pressure gauge is installed at the outlet end of the main water supply pipeline, real-time monitoring on the pressure of a pipe network is achieved, when it is detected that the internal pressure of the pipeline is lower than a safety threshold value, the system can automatically cut off power supply of the circulating pump, and therefore the pump is prevented from idling under the condition that the pressure is insufficient, and the service life of the circulating pump is prolonged. By cutting off the power supply of the pump in time, the idling phenomenon is effectively prevented, the energy consumption is reduced, the invalid operation of the pump in a low-pressure state is reduced, the abrasion of equipment is reduced, the service life of the circulating pump is prolonged, in addition, the system is also beneficial to preventing safety accidents possibly caused by idling of the pump, and the safety of the circulating pump is improved. And safe and stable operation of the system is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of circulating pumps, in particular to an anti-idling device and system for circulating pumps. Background Art

[0002] A circulating pump is a pump used in a circulating system to keep liquid flowing. When the circulating pump is idling, the pump body and magnetic drive device may generate too high a temperature due to the lack of cooling effect of the liquid, which will cause damage to the pump body and the magnetic drive device. In addition, there is no cooling effect of the liquid when the circulating pump is idling, and the rotor components and the pump body may generate heat. Due to thermal expansion and contraction, the sealing ring and other small gaps may be stuck. The conventional detection method uses thermal relay protection. When the motor is overheated, the thermal relay will operate and disconnect the circuit to protect the motor from further damage.

[0003] However, the response speed of thermal relay protection is relatively slow. It will not operate until the motor temperature rises to a certain level. In addition, the sensing sensitivity is easily affected by factors such as ambient temperature and electrical insulation materials, resulting in the inability to accurately reflect the actual temperature of the motor and prevent the circulating pump from idling. Summary of the invention

[0004] In view of the problem in the above-mentioned prior art that the thermal relay protection cannot prevent the circulation pump from idling, the present invention is proposed.

[0005] Therefore, the technical problem to be solved by the present invention is that the thermal relay protection cannot prevent the circulation pump from idling.

[0006] To achieve the above object, the present invention provides the following technical solution: a circulating pump anti-idling device and system, comprising:

[0007] The floating assembly includes a detection float and an elastic connecting rod. The detection float is provided with a connecting rod. An elastic connecting rod is provided at one end of the connecting rod away from the detection float. The connecting rod is provided with a lower sealing plug, a waterproof plug and an upper sealing plug from bottom to top.

[0008] As a further solution of the present invention: a protective baffle is provided at one end of the connecting rod;

[0009] A protective transparent plate is arranged at one end of the connecting rod away from the elastic connecting rod, and the size of the protective transparent plate is larger than the size of the detection floating block.

[0010] As a further solution of the present invention: a circulating water circuit is provided at one end of the protective baffle;

[0011] The circulating water circuit is arranged in a diversion pipeline, and a guide baffle is arranged in the diversion pipeline.

[0012] As a further solution of the present invention: an electric liquid level gauge is arranged in the circulating water circuit, and a protective outer cover is arranged on the outer side of the electric liquid level gauge;

[0013] An exhaust pipe opening is arranged at one end of the protective outer cover.

[0014] As a further solution of the present invention: an elastic connecting rod is provided in the exhaust pipe opening;

[0015] The protective cover is arranged on the shunt pipeline, and a connecting sleeve is arranged at one end of the shunt pipeline.

[0016] As a further solution of the present invention: an electric pressure meter is arranged on the connecting sleeve, a wiring connector is arranged on the electric pressure meter, and a mounting sleeve is arranged between the electric pressure meter and the connecting sleeve.

[0017] As a further solution of the present invention: the exhaust pipe mouth includes a lower contraction section, a middle contraction section and an upper contraction section, the upper contraction section is arranged at the upper end of the exhaust pipe mouth, the lower contraction section is arranged at the lower end of the exhaust pipe mouth, and a middle contraction section is arranged between the upper contraction section and the lower contraction section.

[0018] As a further solution of the present invention: the size of the lower sealing plug is adapted to the size of the lower contraction section;

[0019] The size of the middle contraction section and the size of the waterproof plugging are adapted to each other;

[0020] The size of the upper sealing plug is adapted to the size of the upper contraction section.

[0021] As a further solution of the present invention: a baffle rotating shaft is provided on the protective baffle, a baffle groove is provided at one end of the protective baffle, and the size of the baffle groove is adapted to the size of the circulating waterway;

[0022] The guide baffle is provided with a baffle rotating shaft, and a motion limit is provided at one end of the circulating water channel close to the guide baffle.

[0023] A circulating pump anti-idling system, comprising: the system is composed of an electric pressure meter, a controller and an actuator, the electric pressure meter is installed at the outlet of the main water supply pipe of the pipe network, and monitors the pressure change of the pipe network in real time;

[0024] The controller receives the signal from the electric contact pressure gauge and makes a judgment according to a preset pressure threshold;

[0025] The actuator cuts off the main contactor coil of the circulation pump according to the instruction of the controller, and the AC contactor is released to stop the load.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: the circulating pump anti-idling device and system realizes real-time monitoring of the pipe network pressure by installing an electronic pressure gauge at the outlet end of the main water supply pipe. When it is detected that the internal pressure of the pipe is lower than the safety threshold, the system can automatically cut off the power supply of the circulating pump, thereby preventing the pump from idling under insufficient pressure. By timely interrupting the power supply of the pump, not only the idling phenomenon is effectively prevented, but also energy consumption is reduced, the ineffective operation of the pump under low pressure conditions is reduced, the wear of the equipment is reduced, and the operating life of the circulating pump is extended. In addition, the system also helps to prevent safety accidents that may be caused by pump idling, ensuring the safe and stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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:

[0028] Figure 1 A schematic diagram of the overall structure of a circulating pump anti-idling device and system according to an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of the internal structure of a circulating pump anti-idling device and a system shunt pipeline according to an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of a circulating pump anti-idling device and a closed exhaust pipe port structure of the system according to an embodiment of the present invention;

[0031] Figure 4 A schematic diagram of the structure of an anti-idling device for a circulating pump and an exhaust state of an exhaust pipe port of a system according to an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of a circulating pump anti-idling device and a system exhaust pipe outlet drainage structure according to an embodiment of the present invention;

[0033] Figure 6 A schematic diagram of the connection structure of a circulating pump anti-idling device and a system guide baffle according to an embodiment of the present invention;

[0034] Figure 7 A schematic diagram of the circuit structure of a frequency converter cabinet of a circulating pump anti-idling device and system according to an embodiment of the present invention;

[0035] Figure 8A schematic diagram of the feedback circuit structure of a circulating pump anti-idling device and system described in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] 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.

[0038] 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.

[0039] Furthermore, 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 is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0040] Example 1

[0041] like Figure 1 to Figure 3 As shown, the present invention provides a technical solution: a circulating pump anti-idling device and system, comprising:

[0042] The floating assembly 100 includes a detection float 101 and an elastic connecting rod 103. The detection float 101 is provided with a connecting rod 101a. The end of the connecting rod 101a away from the detection float 101 is provided with the elastic connecting rod 103. The connecting rod 101a is provided with a lower sealing plug 101b, a waterproof plug 101c and an upper sealing plug 101d from bottom to top.

[0043] The system consists of three parts: an electric pressure meter 200, a controller and an actuator. The electric pressure meter 200 is installed at the outlet of the main water supply pipe of the pipe network to monitor the pressure changes of the pipe network in real time.

[0044] The controller receives the signal from the electric contact pressure gauge and makes a judgment based on the preset pressure threshold;

[0045] The actuator cuts off the main contactor coil of the circulation pump according to the instructions of the controller, and the AC contactor is released to stop the load.

[0046] In this embodiment, the type of flowing fluid inside the pipeline is identified by the floating assembly 100 arranged inside. When the internal flowing medium is air, the detection float 101 arranged at the lower end is made of a hollow rubber material. Due to its own weight, when the internal flowing medium is air, the elastic connecting rod 103 at the upper end is used. The driving force generated by the air on it is small and it cannot be completely lifted up. The electric level gauge 207 inside the circulating water circuit 105 does not collect readings. The electric pressure meter 200 arranged at the rear end is in a closed state, and the valve is also in a closed state. The internal gas will move upward, and the lower sealing plug 101b, the waterproof plug 101c and the upper sealing plug 101d arranged inside the exhaust pipe port 206 will move upward, allowing the internal gas to be discharged through the exhaust pipe port 206. After the internal flowing medium becomes water, the internal electric level gauge 207 is triggered, the electric pressure meter 200 is started, and the internal pressure meets the working requirements before working.

[0047] Example 2

[0048] Combined with Figure 3 to Figure 6 , it is concluded that: a protective baffle 104 is provided at one end of the connecting rod 101a, a protective transparent plate 102 is provided at one end of the connecting rod 101a away from the elastic connecting rod 103, the size of the protective transparent plate 102 is larger than the size of the detection float 101, a circulating water circuit 105 is provided at one end of the protective baffle 104, the circulating water circuit 105 is provided in the diversion pipeline 204, and a guide baffle 106 is provided in the diversion pipeline 204;

[0049] Preferably, an electric level gauge 207 is provided in the circulating water circuit 105, a protective cover 205 is provided on the outside of the electric level gauge 207, an exhaust pipe port 206 is provided at one end of the protective cover 205, and an elastic connecting rod 103 is provided in the exhaust pipe port 206;

[0050] The protective cover 205 is disposed on the shunt pipeline 204 , and a connecting sleeve 203 is disposed at one end of the shunt pipeline 204 .

[0051] In this embodiment: when the flowing medium inside the pipeline is water, it will drive the detection float 101 set at the lower end to move upward. Due to the buoyancy, the elastic connecting rod 103 will be squeezed, so that the internal lower sealing plug 101b, waterproof plug 101c and upper sealing plug 101d will move upward, so that the waterproof plug 101c and the lower end of the middle contraction section 206b will contact each other to form a sealed state. Since the size of the lower sealing plug 101b is larger than the waterproof plug 101c, it will contact with the protective baffle 104, driving the protective baffle 104 to rotate around the baffle shaft 104a, thereby opening the circulating water path 105, allowing the internal water to pass through the circulating water path 105, thereby triggering the electric liquid level meter 207 set inside. Under the signal transmission of the external wire, the electric pressure meter 200 is started, allowing the electric pressure meter 200 to detect the pressure value inside the pipeline, open the valve to transport the internal water to the circulating pump, and work.

[0052] Example 3

[0053] Combined with Figure 1 and Figure 7 and Figure 8 , it is concluded that: an electric pressure meter 200 is arranged on the connecting sleeve 203, a wiring connector 201 is arranged on the electric pressure meter 200, a mounting sleeve 202 is arranged between the electric pressure meter 200 and the connecting sleeve 203, the exhaust pipe opening 206 includes a lower contraction section 206a, a middle contraction section 206b and an upper contraction section 206c, the upper contraction section 206c is arranged at the upper end of the exhaust pipe opening 206, the lower contraction section 206a is arranged at the lower end of the exhaust pipe opening 206, and a middle contraction section 206b is arranged between the upper contraction section 206c and the lower contraction section 206a;

[0054] Preferably, the size of the lower sealing plug 101b is adapted to the size of the lower contraction section 206a, the size of the middle contraction section 206b is adapted to the size of the waterproof plug 101c, the size of the upper sealing plug 101d is adapted to the size of the upper contraction section 206c, the protective baffle 104 is provided with a baffle shaft 104a, one end of the protective baffle 104 is provided with a baffle groove 104b, and the size of the baffle groove 104b is adapted to the size of the circulating waterway 105;

[0055] The guide baffle 106 is provided with a baffle rotating shaft 106 b , and a motion limit 106 a is provided at one end of the circulating water channel 105 close to the guide baffle 106 .

[0056] In the present embodiment: by setting the guide baffle 106, when the flowing medium inside the pipeline is gas, the gas entering into the circulating water path 105 is reduced, and when water enters the circulating water path 105, the internal liquid is guided under the action of the forces on both sides, and the baffle groove 104b arranged at the lower end of the protective baffle 104 is adapted to the size structure of the circulating water path 105. In the closed state, the air entering the interior is reduced, thereby improving the sealing effect inside the pipeline.

[0057] The working principle of the present invention is as follows: when the internal flow medium is air, the detection float 101 arranged at the lower end is made of a hollow rubber material. Due to its own weight, when the internal flow medium is air, in cooperation with the elastic connecting rod 103 at the upper end, the driving force generated by the air on it is small and it cannot be completely lifted up. The electric level gauge 207 inside the circulating water circuit 105 does not collect readings, the electric pressure gauge 200 arranged at the rear end is in a closed state, and the valve is also in a closed state. The internal gas will move upward, and the lower sealing plug 101b, the waterproof plug 101c and the upper sealing plug 101d arranged inside the exhaust pipe port 206 will move upward, allowing the internal gas to be discharged through the exhaust pipe port 206. After the internal flow medium becomes water, the internal electric level gauge 207 is triggered, and the electric pressure gauge 200 is started. When the internal flow medium of the pipeline is When the substance is water, the detection float 101 arranged at the lower end will be driven to move upward. Due to the buoyancy, the elastic connecting rod 103 will be squeezed, so that the lower sealing plug 101b, the waterproof plug 101c and the upper sealing plug 101d inside will move upward, so that the waterproof plug 101c will contact with the lower end of the middle contraction section 206b to form a sealed state. Since the size of the lower sealing plug 101b is larger than the waterproof plug 101c, it will contact with the protective baffle 104, driving the protective baffle 104 to rotate around the baffle shaft 104a, thereby opening the circulating waterway 105, allowing the internal water to pass through the circulating waterway 105, thereby triggering the electric liquid level meter 207 arranged inside. Under the signal transmission of the external wire, the electric pressure meter 200 is started, allowing the electric pressure meter 200 to detect the pressure value inside the pipeline, and opening the valve to transport the internal water to the circulating pump;

[0058] The pressure level inside the pipeline is monitored by an electric pressure meter 200, and the detected pressure value is converted into an electrical signal, which is transmitted to the control unit for numerical analysis and judgment of the data. The controller analyzes the collected data and evaluates the pressure value. When the detected pressure value is lower than 0.2 MPa, a feedback signal is sent to the execution unit. Under this threshold, there is a potential risk of the circulation pump inhaling air. After receiving the signal, the execution unit disconnects the power switch of the circulation pump. In the power-off state, the main contactor of the circulation pump is released and the load stops to prevent the circulation pump from idling.

[0059] Importantly, it should be noted that the construction and arrangement of the present application shown in a number 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, for example, the size, scale, structure, shape and proportion of various elements, and parameter values ​​such as 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 of the execution function described herein, 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.

[0060] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention.

[0061] It should be understood 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 for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0062] 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 circulating pump anti-idling device, characterized in that: include, A floating assembly (100), the floating assembly (100) comprising a detection float (101) and an elastic connecting rod (103), the detection float (101) being provided with a connecting rod (101a), one end of the connecting rod (101a) away from the detection float (101) being provided with an elastic connecting rod (103), and the connecting rod (101a) being provided with a lower sealing plug (101b), a waterproof plug (101c) and an upper sealing plug (101d) from bottom to top.

2. The circulating pump anti-idling device according to claim 1, characterized in that: A protective baffle (104) is provided at one end of the connecting rod (101a); A protective transparent plate (102) is provided at one end of the connecting rod (101a) away from the elastic connecting rod (103), and the size of the protective transparent plate (102) is larger than the size of the detection float (101).

3. The circulating pump anti-idling device according to claim 1, characterized in that: A circulating water path (105) is provided at one end of the protective baffle (104); The circulating water circuit (105) is arranged in a diversion pipeline (204), and a flow guide baffle (106) is arranged in the diversion pipeline (204).

4. The circulating pump anti-idling device according to claim 3, characterized in that: An electric liquid level meter (207) is arranged in the circulating water circuit (105), and a protective outer cover (205) is arranged outside the electric liquid level meter (207); An exhaust pipe opening (206) is provided at one end of the protective outer cover (205).

5. The circulating pump anti-idling device according to claim 4, characterized in that: An elastic connecting rod (103) is arranged inside the exhaust pipe opening (206); The protective outer cover (205) is arranged on the shunt pipeline (204), and a connecting sleeve (203) is arranged at one end of the shunt pipeline (204).

6. The circulating pump anti-idling device according to claim 5, characterized in that: An electric pressure meter (200) is arranged on the connecting sleeve (203), a wiring connector (201) is arranged on the electric pressure meter (200), and a mounting sleeve (202) is arranged between the electric pressure meter (200) and the connecting sleeve (203).

7. The circulating pump anti-idling device according to claim 5, characterized in that: The exhaust pipe opening (206) comprises a lower contraction section (206a), a middle contraction section (206b) and an upper contraction section (206c); the upper contraction section (206c) is arranged at the upper end of the exhaust pipe opening (206); the lower contraction section (206a) is arranged at the lower end of the exhaust pipe opening (206); and the middle contraction section (206b) is arranged between the upper contraction section (206c) and the lower contraction section (206a).

8. The circulating pump anti-idling device according to claim 7, characterized in that: The size of the lower sealing plug (101b) and the size of the lower contraction section (206a) are adapted to each other; The size of the middle contraction section (206b) is adapted to the size of the waterproof plug (101c); The size of the upper sealing plug (101d) is compatible with the size of the upper contraction section (206c).

9. The circulating pump anti-idling device according to claim 8, characterized in that: The protective baffle (104) is provided with a baffle rotating shaft (104a), and one end of the protective baffle (104) is provided with a baffle groove (104b), and the size of the baffle groove (104b) is adapted to the size of the circulating water channel (105); The guide baffle (106) is provided with a baffle rotating shaft (106b), and a motion limiter (106a) is provided at one end of the circulating water channel (105) close to the guide baffle (106).

10. A circulating pump anti-idling system, comprising the circulating pump anti-idling device according to any one of claims 1 to 9, characterized in that: The system consists of an electric pressure meter (200), a controller and an actuator. The electric pressure meter (200) is installed at the outlet of the main water supply pipe of the pipe network to monitor the pressure changes of the pipe network in real time. The controller receives the signal from the electric contact pressure gauge and makes a judgment according to a preset pressure threshold; The actuator cuts off the main contactor coil of the circulation pump according to the instruction of the controller, and the AC contactor is released to stop the load.

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