Intelligent shield pump safe pump filling exhaust device

Abstract

The utility model discloses an intelligent shield pump safety pump filling exhaust device which comprises a shield pump, an exhaust pipe is arranged at the tail end of the shield pump, an adjusting valve and a flow sensor are arranged on the exhaust pipe, the exhaust pipe is connected with an air pipe and a material pipe through a flow dividing connector, and a stop valve, a pressure sensor and a safety relief valve are sequentially arranged on the air pipe. The safety relief valve is arranged at the end of the gas pipe, the gas pipe between the stop valve and the pressure sensor is communicated with a purging pipeline, the purging pipeline is sequentially provided with an electric ball valve, a self-operated pressure reducing valve and a nitrogen source, and the nitrogen source is arranged at the end of the purging pipeline; a quick connector is arranged at the end part of the material pipe; the adjusting valve, the flow sensor, the stop valve, the pressure sensor and the electric ball valve are connected to a controller. The stop valve and the electric ball valve replace manual operation, and the risk of medium leakage is eradicated; the safety relief valve is linked with the pressure sensor, the pressure of the pipeline is monitored in real time, and overpressure damage is prevented; and intelligent monitoring and emergency response are realized.

Description

Technical Field

[0001] This utility model relates to the technical field of canned pump venting, and in particular to an intelligent canned pump safety priming and venting device. Background Technology

[0002] A canned motor pump is a type of pump without a dynamic seal. Both the pump and the drive motor are sealed within a pressure vessel filled with the pumped medium. This pressure vessel has only a static seal, and a rotating magnetic field is provided by an electrical wiring harness to drive the rotor. This structure eliminates the rotating shaft seal device found in traditional centrifugal pumps, thus achieving complete leak-free operation. Canned motor pumps use sliding bearings lubricated by the pumped medium. The material circulating inside or outside the pump lubricates and cools the sliding bearings. However, some pumped media have low boiling points and are easily vaporized, or if the gas inside the pump is not completely purged before startup, the medium used for lubricating and cooling the sliding bearings is replaced by a gaseous medium during pump operation. This significantly reduces the lubrication and cooling effect, leading to increased bearing temperature, severe wear, and even bearing failure, causing pump damage.

[0003] Existing canned motor pump filling and venting devices mostly rely on manual operation, which has the following drawbacks: leakage risk: the union and plug need to be disassembled manually, and operational errors can easily lead to the leakage of toxic media; insufficient automation: valve opening and closing depends on manual operation, and there is a lack of real-time monitoring and emergency response mechanisms. Utility Model Content

[0004] An intelligent canned pump safety priming and venting device is provided to solve the problems of high risk of manual operation and insufficient automation in the existing technology, so as to achieve a safe and efficient priming and venting process.

[0005] An intelligent canned pump safety priming and exhaust device includes a canned pump, an exhaust pipe, a regulating valve, an air pipe, a material pipe, a purging pipe, and a controller. The exhaust pipe is provided at the tail end of the canned pump. The exhaust pipe is equipped with a regulating valve and a flow sensor. The flow sensor is used to regulate the exhaust flow rate and monitor the exhaust volume in real time.

[0006] The exhaust pipe is connected to the gas pipe and the material pipe through a splitter connector. The gas pipe is used to discharge gas. A shut-off valve, a pressure sensor and a safety relief valve are installed on the gas pipe in sequence. The safety relief valve is located at the end of the gas pipe.

[0007] A purging pipe is connected to the air pipe between the shut-off valve and the pressure sensor. An electric ball valve, a self-regulating pressure reducing valve, and a nitrogen source are sequentially installed on the purging pipe. The nitrogen source is located at the end of the purging pipe. The nitrogen source controls the purging pressure through the self-regulating pressure reducing valve. The electric ball valve is controlled by the controller to open and close. It is used to purge the air pipe with nitrogen after shutdown to prevent the medium residue from condensing or corroding the pipe.

[0008] The end of the material pipe is provided with a quick connector, which is used to connect to a recycling container or process flow.

[0009] The regulating valve, flow sensor, shut-off valve, pressure sensor, and electric ball valve are connected to the controller; the controller is connected to the canned pump power control module, which is connected to the canned pump; the flow sensor and pressure sensor monitor the exhaust flow and air pipe pressure in real time, and the data is transmitted to the controller; the controller links the canned pump power control module according to a preset threshold, and when an abnormality is detected, such as a sudden drop in flow or overpressure, it automatically cuts off the power to the canned pump to achieve emergency shutdown protection.

[0010] The shut-off valve is a solenoid valve; the shut-off valve is automatically controlled by the solenoid valve, eliminating the risk of leakage from manual operation, and the safety pressure relief valve prevents overpressure in the pipeline.

[0011] The material pipe is a high-pressure resistant transparent composite material pipe, which facilitates observation of the internal medium flow state; the inner wall of the gas pipe and exhaust pipe is equipped with an anti-corrosion coating, which is suitable for conveying corrosive media and extends the service life of the device.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. Enhanced automation and safety: Solenoid valves (shut-off valves) and electric ball valves replace manual operation, eliminating the risk of media leakage; safety relief valves are linked with pressure sensors to monitor pipeline pressure in real time and prevent damage from overpressure.

[0014] 2. Intelligent monitoring and emergency response: Flow and pressure data are fed back to the controller in real time to realize dynamic monitoring of the priming and venting process; automatic shutdown under abnormal conditions to avoid bearing wear and pump damage, and improve system reliability.

[0015] 3. Ease of operation: The high-pressure resistant transparent material tube facilitates observation of the medium flow, and the quick connectors support quick disassembly and assembly, improving maintenance efficiency; the nitrogen purging system automatically removes residual medium from the pipeline, reducing manual cleaning costs. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention;

[0017] In the diagram: 1. Shielded pump; 2. Exhaust pipe; 3. Regulating valve; 4. Gas pipe; 5. Material pipe; 6. Flow sensor; 7. Quick connector; 8. Diverter connector; 9. Shut-off valve; 10. Purge pipe; 11. Electric ball valve; 12. Self-regulating pressure reducing valve; 13. Nitrogen source; 14. Pressure sensor; 15. Safety relief valve; 16. Controller; 17. Shielded pump power control module. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0019] Example 1

[0020] like Figure 1 As shown in the figure, this utility model provides an intelligent shielded pump safety priming and exhaust device, the structure of which includes a shielded pump 1, an exhaust pipe 42, a regulating valve 3, an air pipe 4, a material pipe 5, a purging pipe 10 and a controller 16. The tail end of the shielded pump 1 is provided with an exhaust pipe 42, and the exhaust pipe 42 is provided with a regulating valve 3 and a flow sensor 6. The flow sensor 6 is used to regulate the exhaust flow and monitor the exhaust volume in real time.

[0021] The exhaust pipe 42 is connected to the air pipe 4 and the material pipe 5 through the diverter 8. The air pipe 4 is used to discharge gas. The air pipe 4 is equipped with a shut-off valve 9, a pressure sensor 14 and a safety relief valve 15 in sequence. The safety relief valve 15 is located at the end of the air pipe 4.

[0022] A purge pipe 10 is connected to the air pipe 4 between the shut-off valve 9 and the pressure sensor 14. An electric ball valve 11, a self-operated pressure reducing valve 12, and a nitrogen source 13 are sequentially installed on the purge pipe 10. The nitrogen source 13 is located at the end of the purge pipe 10. The nitrogen source 13 controls the purge pressure through the self-operated pressure reducing valve 12. The electric ball valve 11 is controlled to open and close by the controller 16. It is used to purge the air pipe 4 with nitrogen after shutdown to prevent the medium residue from condensing or corroding the pipe.

[0023] The end of the material pipe 5 is provided with a quick connector 7, which is used to connect to the recycling container or process flow.

[0024] The regulating valve 3, flow sensor 6, shut-off valve 9, pressure sensor 14, and electric ball valve 11 are connected to the controller 16; the controller 16 is connected to the canned pump power control module 17, which is connected to the canned pump 1. The flow sensor 6 and pressure sensor 14 monitor the exhaust flow and pressure of the air pipe 4 in real time, and the data is transmitted to the controller 16; the controller 16 links the canned pump power control module 17 according to a preset threshold. When an abnormality is detected, such as a sudden drop in flow or overpressure, the power supply to the canned pump 1 is automatically cut off to achieve emergency shutdown protection.

[0025] Shut-off valve 9 is a solenoid valve; the solenoid valve 9 is automatically controlled, eliminating the risk of leakage from manual operation, and the safety pressure relief valve 15 prevents overpressure in the pipeline.

[0026] Material pipe 5 is a high-pressure resistant transparent composite material pipe, which facilitates observation of the internal medium flow status; the inner walls of gas pipe 4 and exhaust pipe 42 are equipped with anti-corrosion coatings, which are suitable for conveying corrosive media and extend the service life of the device.

[0027] Working principle:

[0028] Priming and venting stage: Before starting the canned pump, the controller controls the regulating valve to be fully open, the shut-off valve to be open, and the safety relief valve to be in the set pressure warning state.

[0029] Gas inside the pump is discharged through the exhaust pipe and the diverter. The flow sensor monitors the exhaust flow in real time. When the flow is stable and below the threshold, the exhaust is completed, the controller closes the shut-off valve, and enters normal operation mode.

[0030] Abnormal monitoring and protection: If the pressure sensor detects that the gas pipe pressure exceeds the set value of the safety relief valve during the exhaust process, the safety relief valve will automatically open to release pressure, and at the same time the controller will trigger the power control module of the canned pump to stop. If the flow sensor detects abnormal flow fluctuations (such as sudden interruption), the controller will determine that the gas has not been completely exhausted or the pipeline is blocked, and will automatically shut off the power of the canned pump to prevent dry running from damaging the bearings.

[0031] Shutdown and purging phase: After the shielded pump stops, the controller opens the electric ball valve, and the nitrogen source injects low-pressure nitrogen into the gas pipe through the self-regulating pressure reducing valve to purge the residual medium and prevent condensation or corrosion. The electric ball valve automatically closes after the purging is completed.

Claims

1. An intelligent shielding pump safety priming and venting device, characterized in that: The system includes a shielded pump, an exhaust pipe, a regulating valve, an air pipe, a material pipe, a purge pipe, and a controller. The shielded pump has an exhaust pipe at its tail end, and the exhaust pipe is equipped with a regulating valve and a flow sensor. The exhaust pipe connects the air pipe and the material pipe via a splitter connector. The air pipe is sequentially equipped with a shut-off valve, a pressure sensor, and a safety relief valve, located at the end of the air pipe. The air pipe between the shut-off valve and the pressure sensor is connected to the purge pipe, which is sequentially equipped with an electric ball valve, a self-regulating pressure reducing valve, and a nitrogen source, located at the end of the purge pipe. The material pipe has a quick-connect connector at its end. The regulating valve, flow sensor, shut-off valve, pressure sensor, and electric ball valve are connected to the controller.

2. The safety pump priming and venting device of claim 1, wherein: The shut-off valve is a solenoid valve.

3. The safety priming and venting device for a canned motor pump according to claim 1, characterized in that: The controller is connected to the shielded pump power control module, and the shielded pump power control module is connected to the shielded pump.

4. The safety pump priming and venting device of claim 1, wherein: The material tube is a high-pressure resistant transparent composite material tube.

5. The intelligent shielded pump safety priming and venting device according to claim 1, characterized in that: The inner walls of the air pipe and exhaust pipe are coated with an anti-corrosion coating.

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