Variable frequency controller for submersible water pump

Abstract

The utility model discloses a variable-frequency controller for a submersible water pump, which comprises a variable-frequency controller seat mounted on the side wall of a sound insulation sleeve; the frequency conversion controller cover is matched with the frequency conversion controller seat to form an electromagnetic valve sealing cavity and a frequency converter sealing cavity which are not communicated; the exhaust electromagnetic valve is mounted in the electromagnetic valve sealing cavity and is used for exhausting gas in the mute in-pipe pump; the frequency converter is mounted on the frequency conversion controller seat in the frequency converter sealing cavity in an attached manner and is electrically connected with the submersible electric pump for the in-pipe pump; and the group of connected gap bridge cable sealing devices are respectively arranged in the electromagnetic valve sealing cavity and the frequency converter sealing cavity, and the two gap bridge cable sealing devices are connected through a double-cavity gap bridge cable arranged in the mute in-pipe pump sound insulation sleeve and are used for being electrically connected with each electric control part. The digital frequency conversion controller reduces the noise and prolongs the service life of the motor by shortening the motor cable, reducing the interference and reducing the influence of the instant overvoltage on the motor terminal on the motor insulation.

Description

Technical Field

[0001] The utility model relates to a water pump, in particular to a frequency conversion controller for a submersible water pump. Background Art

[0002] A pump in a tube, also known as a planetary pump or a multilateral pump, is a centrifugal pump used to transport liquids. It is composed of multiple gears, forming a planetary gear structure, hence the name. Silent pumps in a tube have the characteristics of small size, simple structure, and stable operation, and are widely used in fluid transportation in various industries.

[0003] The pump in the tube mainly uses the working principle of planetary gears to achieve the suction and discharge of liquid. It consists of a fixed outer gear and several inner gears rotating around the outer gear. The rotation of the inner gear changes the volume of the pump chamber to achieve liquid transportation.

[0004] The pump-in-tube must be filled with liquid during safe and normal operation. If there is too much gas in the pump-in-tube, the motor may burn out easily due to the increase in dry-burning temperature. Therefore, the pump-in-tube will be equipped with a corresponding exhaust valve for exhaust; and the pump-in-tube will be equipped with a corresponding frequency converter to monitor the operation of the pump-in-tube. However, the installation of both may easily affect the normal operation of the frequency converter due to leakage of the exhaust valve, resulting in equipment failure.

[0005] Therefore, on the basis of ensuring the normal operation of the in-pipe pump, the research purpose of the utility model is to design a frequency conversion controller for a submersible water pump that is compatible with the installation and use of an exhaust valve and a frequency converter. Utility Model Content

[0006] In view of the technical problems existing in the above-mentioned prior art, the utility model provides a frequency conversion controller for a submersible water pump, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0007] The technical solution of the utility model is:

[0008] A frequency conversion controller for a submersible water pump, comprising:

[0009] A frequency conversion controller seat, the frequency conversion controller seat is sealed and fixedly installed on the side wall of the pump sound insulation sleeve in the silent pipe;

[0010] The frequency conversion controller cover is detachably mounted on the outer side of the frequency conversion controller seat which is not connected to the pump sound insulation sleeve in the mute pipe, and cooperates with the frequency conversion controller seat to form a non-connected electromagnetic valve sealing chamber and a frequency converter sealing chamber;

[0011] An exhaust solenoid valve, mounted on a frequency conversion controller seat in the solenoid valve sealing chamber, for exhausting gas in the pump in the silent pipe;

[0012] The frequency converter is fitted on the frequency converter controller seat in the frequency converter sealed cavity, and the frequency converter is connected to the submersible electric pump for the pipe pump through the corresponding submersible motor power cable sealing device and the submersible electric pump power cable. The submersible motor power cable sealing device is installed on the frequency converter controller seat where the frequency converter sealed cavity is located;

[0013] A group of connected bridge cable sealing devices are respectively installed on the frequency converter seats in the solenoid valve sealing chamber and the frequency converter sealing chamber. The two bridge cable sealing devices are connected by a double-cavity bridge cable arranged in the pump sound insulation sleeve in the silent tube, which is used to electrically connect various electronic control components.

[0014] The frequency conversion controller cover is locked and fixed on the frequency conversion controller seat by corresponding bolts and rubber sealing rings.

[0015] The exhaust solenoid valve is communicated with the sound-proof sleeve of the pump in the silent tube through the solenoid valve exhaust sealing pipe that penetrates the sound-proof sleeve of the pump in the silent tube.

[0016] A water inlet detection sensor is arranged in the frequency converter sealed cavity. The water inlet detection sensor is attached to the frequency converter seat and to the inner side wall of the frequency converter cover away from the pump end in the silent pipe.

[0017] A noise sensor, a water level electrode for a pump in a tube, a temperature detection sensor and a vibration sensor are installed on the frequency conversion controller seat in the frequency conversion sealed cavity for detecting noise, water level, temperature and vibration in the silent tube pump respectively.

[0018] The side wall of the frequency conversion controller cover is located at the position of the frequency conversion sealed cavity, and a control cable sealing joint and a power cable sealing joint are sealed and fixedly installed. The connection ends of the control cable sealing joint and the power cable sealing joint are both arranged outwardly on the outside of the frequency conversion controller cover.

[0019] The side wall of the pump sound insulation sleeve in the silent pipe is provided with a mounting hole connected to the interior thereof, and the frequency conversion controller seat is sealed and welded at the mounting hole.

[0020] An inverter operation parameter observation window is arranged above the inverter controller cover and directly facing the display screen of the inverter.

[0021] Advantages of the utility model:

[0022] 1) The utility model is a digital frequency conversion controller, which reduces interference and the influence of instantaneous overvoltage on the motor terminal on the motor insulation, reduces noise and prolongs the service life of the motor by shortening the motor cable; and the heating element of the digital frequency conversion controller is attached to the frequency conversion controller seat, and the frequency conversion controller seat is arranged on the sound insulation sleeve of the silent tube pump, and the other side of the frequency conversion controller seat is the water in the sound insulation sleeve of the silent tube pump, so that the digital frequency conversion controller can be cooled by water cooling, and the cooling efficiency is high.

[0023] 2) The frequency converter of the utility model is composed of two electromagnetic valve sealed chambers and frequency converter sealed chambers that are not interconnected and have a protection level of IP68 and can be submerged. The exhaust electromagnetic valve and the frequency converter are separately arranged in the electromagnetic valve sealed chamber and the frequency converter sealed chamber. The separate chamber arrangement of the exhaust electromagnetic valve and the frequency converter can avoid the problems such as leakage of the exhaust electromagnetic valve affecting the installation environment and normal use of the frequency converter. And through a group of bridge cable sealing devices that are connected and respectively arranged in the electromagnetic valve sealed chamber and the frequency converter sealed chamber, and the double-chamber bridge cable, the various electric control components are electrically connected. Under the premise of ensuring the installation sealing, the connection of the double-chamber bridge cable can be carried out without penetrating the frequency converter cover. Not penetrating the frequency converter cover not only facilitates the installation of the frequency converter cover, avoids the frequency converter cover from being entangled and disturbed by the wires, and facilitates wiring. More importantly, it can effectively ensure the sealing performance of each sealed chamber, protect the electrically connected components, and improve the practical performance of the utility model.

[0024] 3) A water inlet detection sensor is arranged in the sealed cavity of the frequency converter of the utility model. The water inlet detection sensor can detect in real time whether water has entered the sealed cavity of the frequency converter. If water has entered, the machine can be immediately shut down for protection and an alarm can be sounded, thereby protecting the equipment. The water inlet detection sensor is attached to the frequency converter base and to the inner wall of the frequency converter cover away from the end of the silent tube pump. When the silent tube pump is installed horizontally or vertically, the water inlet detection sensor is ensured to be at the lowest point of the frequency converter, thereby timely detecting the water inflow into the sealed cavity of the frequency converter.

[0025] 4) The utility model adds a water level electrode in the soundproof casing of the silent pipe pump to detect the water level condition, which effectively prevents the motor from running dry and burning; adds a temperature detection sensor to effectively prevent the electric pump from failing due to excessively high operating temperature; adds a noise sensor to detect the operating noise in the pipe pump in real time to ensure that the equipment operation meets the requirements; and configures a vibration sensor to detect the operating vibration value of the pipe pump in real time, predict the health status of the pipe pump, provide a decision-making basis for repair and maintenance, and improve the water supply reliability of the pipe pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the utility model.

[0027] Figure 2 This is a schematic diagram of the structure of the utility model after the cover of the frequency conversion controller is removed.

[0028] Figure 3 It is a schematic diagram of the vertical installation of the utility model.

[0029] In the attached drawing: frequency conversion controller seat 1, silent pipe pump sound insulation sleeve 2, frequency conversion controller cover 3, submersible electric pump for pipe pump 4, solenoid valve sealing chamber 5, frequency converter sealing chamber 6, exhaust solenoid valve 8, frequency converter 9, submersible motor power cable sealing device 10, submersible electric pump power cable 11, bridge cable sealing device 12, double-chamber bridge cable 13, rubber sealing ring 14, solenoid valve exhaust sealing tube 15, water inlet detection sensor 16, noise sensor 17, pipe pump water level electrode 18, temperature detection sensor 19, vibration sensor 20, control cable sealing joint 21, power cable sealing joint 22, frequency converter operation parameter observation window 23. DETAILED DESCRIPTION

[0030] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the accompanying drawings:

[0031] refer to Figure 1-3 , a frequency conversion controller for a submersible water pump, comprising:

[0032] A frequency conversion controller seat 1, the frequency conversion controller seat 1 is sealed and fixedly installed on the side wall of the pump sound insulation sleeve 2 in the silent pipe;

[0033] The frequency conversion controller cover 3 is detachably mounted on the outer side of the frequency conversion controller seat 1 which is not connected to the pump sound insulation sleeve 2 in the mute pipe, and cooperates with the frequency conversion controller seat 1 to form a non-connected electromagnetic valve sealing chamber 5 and a frequency converter sealing chamber 6;

[0034] An exhaust solenoid valve 8, mounted on the frequency conversion controller seat 1 in the solenoid valve sealing chamber 5, for exhausting the gas in the pump in the silent pipe;

[0035] The frequency converter 9 is fitted on the frequency converter controller seat 1 in the frequency converter sealed cavity 6, and the frequency converter 9 is connected to the submersible electric pump 4 for the pipe pump through the corresponding submersible motor power cable sealing device 10 and the submersible electric pump power cable 11. The submersible motor power cable sealing device 10 is installed on the frequency converter controller seat 1 where the frequency converter sealed cavity 6 is located;

[0036] A group of connected bridge cable sealing devices 12 are respectively installed on the frequency converter seat 1 in the solenoid valve sealing chamber 5 and the frequency converter sealing chamber 6. The two bridge cable sealing devices 10 are connected by a double-cavity bridge cable 13 arranged in the pump sound insulation sleeve 2 in the silent tube, which is used to electrically connect various electronic control components.

[0037] The utility model is a digital frequency conversion controller, which reduces interference and the influence of instantaneous overvoltage on the motor terminal on the motor insulation, reduces noise and prolongs the service life of the motor by shortening the motor cable; and the heating element of the digital frequency conversion controller is attached to the frequency conversion controller seat 1, the frequency conversion controller seat 1 is arranged on the sound insulation sleeve 2 of the silent pipe pump, and the other side of the frequency conversion controller seat 1 is the water in the sound insulation sleeve 2 of the silent pipe pump, so that the digital frequency conversion controller can be cooled by water cooling, and the cooling efficiency is high.

[0038] The frequency conversion controller of the utility model is two electromagnetic valve sealed chambers 5 and frequency converter sealed chambers 6 which are not interconnected and have a protection level of IP68 and can be submerged. The exhaust electromagnetic valve 8 and the frequency converter 9 are separately arranged in the electromagnetic valve sealed chamber 5 and the frequency converter sealed chamber 6. The exhaust electromagnetic valve 8 and the frequency converter 9 are arranged in separate chambers to avoid problems such as leakage of the exhaust electromagnetic valve 8 affecting the installation environment and normal use of the frequency converter 9. And through a group of bridge cable sealing devices 12 and double-chamber bridge cables 13 connected and respectively arranged in the electromagnetic valve sealed chamber 5 and the frequency converter sealed chamber 6, the various electric control components are electrically connected. Under the premise of ensuring the installation sealing, the double-chamber bridge cable 13 can be connected without penetrating the frequency conversion controller cover 3. Not penetrating the frequency conversion controller cover 3 not only facilitates the installation of the frequency conversion controller cover 3, avoids the frequency conversion controller cover 3 from being disturbed by the winding of the wire, and is convenient for wiring, but more importantly, it can effectively ensure the sealing performance of each sealed chamber, protect the electrically connected components, and improve the practical performance of the utility model.

[0039] The frequency conversion controller cover 3 is locked and fixed on the frequency conversion controller base 1 by corresponding bolts and rubber sealing rings 14 .

[0040] The exhaust solenoid valve 8 is connected to the soundproof casing 2 of the silent pump in pipe through the solenoid valve exhaust sealing pipe 15 that penetrates the soundproof casing 2 of the silent pump in pipe. When there is gas in the soundproof casing 2 of the silent pump in pipe, the exhaust solenoid valve 8 is opened to exhaust the gas, and the normal starting condition of the pump in pipe can be restored.

[0041] A water inlet detection sensor 16 is arranged in the inverter sealed cavity 6. The water inlet detection sensor 16 is attached to the inverter controller seat 1 and to the inner side wall of the inverter controller cover 3 away from the pump end of the silent pipe.

[0042] A water inlet detection sensor 16 is arranged in the frequency converter sealed cavity 6 of the utility model. The water inlet detection sensor 16 can detect in real time whether water has entered the frequency converter sealed cavity 6. If water has entered, the device can be immediately shut down for protection and an alarm can be sounded, thereby protecting the equipment. The water inlet detection sensor 16 is attached to the frequency converter base 1 and to the inner side wall of the frequency converter cover 3 away from the end of the silent tube pump. When the silent tube pump is installed horizontally or vertically, the water inlet detection sensor 16 is ensured to be at the lowest point of the frequency converter, thereby timely detecting the water inlet situation of the frequency converter sealed cavity 6.

[0043] A noise sensor 17, a water level electrode 18 for a pump in a tube, a temperature detection sensor 19 and a vibration sensor 20 are installed in the inverter sealed cavity 6 on the inverter base 1 for detecting noise, water level, temperature and vibration in the silent tube pump.

[0044] The utility model adds a water level electrode in the soundproof casing 2 of the silent pipe pump to detect the water level condition, which effectively prevents the motor from running dry and burning; adds a temperature detection sensor 19, which can effectively prevent the electric pump from failing due to excessively high operating temperature; adds a noise sensor 17 to detect the operating noise in the pipe pump in real time, ensuring that the equipment operation meets the requirements; and configures a vibration sensor 20 to detect the operating vibration value of the pipe pump in real time, predict the health status of the pipe pump, provide a decision-making basis for repair and maintenance, and improve the water supply reliability of the pipe pump.

[0045] The side wall of the frequency conversion controller cover 3 is located at the position of the frequency conversion sealed cavity 6 and is sealed and fixedly installed with a control cable sealing joint 21 and a power cable sealing joint 22. The connection ends of the control cable sealing joint 21 and the power cable sealing joint 22 are both arranged outwardly on the outside of the frequency conversion controller cover 3.

[0046] The side wall of the pump sound insulation sleeve 2 in the silent pipe is provided with a mounting hole communicating with the interior thereof, and the frequency conversion controller seat 1 is sealed and welded at the mounting hole.

[0047] An inverter operating parameter observation window 23 is provided above the inverter controller cover 3 and directly facing the display screen of the inverter 9 .

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A frequency conversion controller for a submersible water pump, characterized in that: include: A frequency conversion controller seat (1), the frequency conversion controller seat (1) being sealed and fixedly mounted on the side wall of the pump sound insulation sleeve (2) in the silent pipe; A frequency conversion controller cover (3) is detachably mounted on the outer side of the frequency conversion controller seat (1) not connected to the pump sound insulation sleeve (2) in the mute pipe, and cooperates with the frequency conversion controller seat (1) to form a non-connected electromagnetic valve sealing chamber (5) and a frequency converter sealing chamber (6); An exhaust solenoid valve (8), mounted on the frequency conversion controller seat (1) in the solenoid valve sealing chamber (5), for exhausting the gas in the pump in the silent pipe; The frequency converter (9) is fitted on a frequency converter controller seat (1) in the frequency converter sealed cavity (6), and the frequency converter (9) is connected to a submersible electric pump (4) for a pump in a pipe through a corresponding submersible motor power cable sealing device (10) and a submersible electric pump power cable (11), wherein the submersible motor power cable sealing device (10) is installed on the frequency converter controller seat (1) where the frequency converter sealed cavity (6) is located; A group of connected bridge cable sealing devices (12) are respectively installed on the frequency conversion controller seat (1) in the electromagnetic valve sealing chamber (5) and the frequency converter sealing chamber (6); the two bridge cable sealing devices (12) are connected by a double-cavity bridge cable (13) arranged in the pump sound insulation sleeve (2) in the silent pipe, and are used to electrically connect various electronic control components.

2. A submersible water pump frequency conversion controller according to claim 1, characterized in that: The frequency conversion controller cover (3) is locked and fixed on the frequency conversion controller base (1) by corresponding bolts and a rubber sealing ring (14).

3. A submersible water pump frequency conversion controller according to claim 1, characterized in that: The exhaust solenoid valve (8) is connected to the sound-proof casing (2) of the pump in the silent pipe via a solenoid valve exhaust sealing pipe (15) that penetrates the sound-proof casing (2) of the pump in the silent pipe.

4. A submersible water pump frequency conversion controller according to claim 1, characterized in that: A water inlet detection sensor (16) is arranged in the frequency converter sealed cavity (6); the water inlet detection sensor (16) is attached to the frequency converter base (1) and to the inner side wall of the frequency converter cover (3) away from the pump end in the silent pipe.

5. A submersible water pump frequency conversion controller according to claim 1, characterized in that: A noise sensor (17), a pump-in-tube water level electrode (18), a temperature detection sensor (19), and a vibration sensor (20) are installed on the frequency conversion controller seat (1) and located in the frequency conversion sealed chamber (6) for detecting noise, water level, temperature, and vibration conditions in the silent pump-in-tube, respectively.

6. A submersible water pump frequency conversion controller according to claim 1, characterized in that: A control cable sealing joint (21) and a power cable sealing joint (22) are sealed and fixedly mounted on the side wall of the frequency conversion controller cover (3) at a position where the frequency conversion sealed cavity (6) is located. The wiring ends of the control cable sealing joint (21) and the power cable sealing joint (22) are both arranged outwardly on the outside of the frequency conversion controller cover (3).

7. A submersible water pump frequency conversion controller according to claim 1, characterized in that: The side wall of the pump sound insulation sleeve (2) in the silent pipe is provided with a mounting hole communicating with the interior thereof, and the frequency conversion controller seat (1) is sealed and welded at the mounting hole.

8. A submersible water pump frequency conversion controller according to claim 1, characterized in that: A frequency converter operating parameter observation window (23) is provided above the frequency converter controller cover (3) and directly facing the display screen of the frequency converter (9).

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