Steady-state flow testing device for lead-based alloy shield pump

Abstract

The utility model relates to the technical field of shield pump steady-state flow testing, and discloses a lead-based alloy shield pump steady-state flow testing device which comprises a base, a motor is arranged at one end of the base, a threaded rod is fixedly connected to the top of the motor, a movable block is connected to the top of the threaded rod in a threaded mode, and a conveying box is fixedly connected to one end of the movable block. The inner side of the conveying box is movably connected to one side of the guide rod, a maintenance ladder is arranged at one end of the base, and the top of the maintenance ladder is fixedly connected with one end of the operation table; a shield pump body is placed in the conveying box, then a motor is started, the motor drives a threaded rod to rotate, the threaded rod drives a movable block to move upwards, the movable block drives the conveying box to move upwards to reach one side of an operation table, and a worker climbs to the top of the operation table through a maintenance ladder and then moves to the top of the operation table. The shield pump body is taken out from the inside of the conveying box for installation testing, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of steady-state flow testing of shielded pumps, in particular to a steady-state flow testing device for lead-based alloy shielded pumps. Background Art

[0002] The canned pump is a special type of pump equipment. Its main feature is that there is no dynamic seal between the pump and the drive motor. It is replaced by a static seal, thus achieving leak-free operation. Canned pumps are widely used in chemical industry, nuclear power and other occasions where liquid leakage needs to be prevented. Especially in the field of nuclear power, canned pumps are regarded as one of the key equipment due to their leak-free characteristics.

[0003] Lead-based alloy canned motor pump is an indispensable equipment in specific industrial applications. Its steady-state flow test is a key link to ensure the performance of the pump.

[0004] With regard to the existing related technologies, the inventors believe that the following defects exist: Generally, when testing a shielded pump, it is necessary to move the shielded pump to an operating platform and then install and test it. In the prior art, workers generally reach the operating platform by climbing a maintenance ladder, but it is inconvenient to carry the shielded pump during the climbing process, and the shielded pump is prone to fall, which can easily cause safety hazards. Utility Model Content

[0005] In order to solve the technical problem that the existing staff have to climb the maintenance ladder to reach the operating platform, but it is inconvenient to carry the shielded pump during the climbing process, the shielded pump is easy to fall, and it is easy to cause safety hazards, the utility model provides a lead-based alloy shielded pump steady-state flow test device.

[0006] The utility model is implemented by the following technical scheme: a lead-based alloy shielded pump steady-state flow test device, comprising a base and a shielded pump body, an operating table is arranged on the top of the base, a shielded pump body is arranged on one end of the top of the operating table, a tank body is assembled and connected to the bottom of the shielded pump body, the top of the tank body is fixedly connected to the operating table, a liquid outlet pipe is fixedly connected to the bottom of the tank body, a flow regulating bypass is fixedly connected to the bottom of the tank body, one end of the flow regulating bypass is fixedly connected to one end of the liquid outlet pipe, one end of the liquid outlet pipe is fixedly connected to a venturi flowmeter, one end of the venturi flowmeter is connected to a valve through a pipeline, one end of the valve is fixedly connected to a liquid inlet pipe, and one end of the liquid inlet pipe is fixedly connected to one side of the tank body;

[0007] Among them, a motor is arranged at one end of the base, a threaded rod is fixedly connected to the top of the motor, a movable block is threadedly connected to the top of the threaded rod, and one end of the movable block is fixedly connected to a conveying box.

[0008] Preferably, one end of the base is fixedly connected to two guide rods, and the top of the guide rods is fixedly connected to the bottom of the operating table.

[0009] Preferably, two limit blocks are fixedly connected to one side of the conveying box, and the limit blocks are movably connected to the outside of the guide rod.

[0010] Preferably, the limit block is "L"-shaped.

[0011] Preferably, a maintenance ladder is provided at one end of the base, and the top of the maintenance ladder is fixedly connected to one end of the operating table.

[0012] Preferably, the inner side of the conveying box is movably connected to one side of the guide rod, and one end of the conveying box is movably connected to one side of the maintenance ladder.

[0013] Preferably, an expansion joint is installed in the middle of the liquid outlet pipe and the liquid inlet pipe, and a thermometer is installed at one end of the liquid outlet pipe and the liquid inlet pipe.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] When the utility model is in use, the shielded pump body is placed in the interior of the conveying box, and then the motor is started. The motor will drive the threaded rod to rotate, and the threaded rod will drive the movable block to move upward. The movable block will drive the conveying box to move upward to one side of the operating table. After the staff climbs to the top of the operating table through the maintenance ladder, they take out the shielded pump body from the interior of the conveying box for installation and testing. The operation is simple and convenient.

[0016] When the utility model is in use, the shielded pump body is started, and the shielded pump body transports the alloy liquid in the tank body to the liquid outlet pipe, and then the liquid passes through the venturi flowmeter, and the flow of the pipeline can be measured by the venturi flowmeter. After passing through the venturi flowmeter, the liquid reaches the valve through the pipeline, and finally the liquid enters the interior of the tank body through the liquid inlet pipe, thereby forming a cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the positions of the operating table and the conveying box of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the conveying box and the threaded rod of the utility model.

[0020] In the figure: 1. base; 2. shielded pump body; 3. operating table; 4. tank body; 5. liquid outlet pipe; 6. flow regulating bypass; 7. venturi flowmeter; 8. valve; 9. liquid inlet pipe; 10. maintenance ladder; 11. conveying box; 12. motor; 13. threaded rod; 14. guide rod; 15. movable block; 16. limit block. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0022] Example 1: Please refer to Figure 1 - Figure 3 A lead-based alloy shielded pump steady-state flow test device of the present embodiment comprises a base 1 and a shielded pump body 2, an operating table 3 is arranged on the top of the base 1, a shielded pump body 2 is arranged on one end of the top of the operating table 3, a tank body 4 is assembled and connected to the bottom of the shielded pump body 2, the top of the tank body 4 is fixedly connected to the operating table 3, a liquid outlet pipe 5 is fixedly connected to the bottom of the tank body 4, a flow regulating bypass 6 is fixedly connected to the bottom of the tank body 4, one end of the flow regulating bypass 6 is fixedly connected to one end of the liquid outlet pipe 5, one end of the liquid outlet pipe 5 is fixedly connected to a venturi flowmeter 7, one end of the venturi flowmeter 7 is connected to a valve 8 through a pipeline, one end of the valve 8 is fixedly connected to a liquid inlet pipe 9, and one end of the liquid inlet pipe 9 is fixedly connected to one side of the tank body 4;

[0023] When in use, the shielded pump body 2 is installed on the top of the tank body 4, and the shielded pump body 2 is started. The shielded pump body 2 transports the alloy liquid in the tank body 4 to the liquid outlet pipe 5, and then the liquid passes through the liquid outlet pipe 5 to the venturi flowmeter 7. The flow rate of the pipeline can be measured by the venturi flowmeter 7. After passing through the venturi flowmeter 7, the liquid reaches the valve 8, and finally the liquid passes through the pipeline and the liquid inlet pipe 9 into the interior of the tank body 4, thereby forming a cycle;

[0024] Among them, by providing a flow regulating bypass 6, the flow and pressure of the liquid can be adjusted; by providing a valve 8, the valve can be closed when the device is not working to prevent internal flow, and it can also be used to flush the liquid metal;

[0025] Further, a motor 12 is provided at one end of the base 1, a threaded rod 13 is fixedly connected to the top of the motor 12, a movable block 15 is threadedly connected to the top of the threaded rod 13, one end of the movable block 15 is fixedly connected to a conveying box 11, a maintenance ladder 10 is provided at one end of the base 1, the top of the maintenance ladder 10 is fixedly connected to one end of the operating table 3, the inner side of the conveying box 11 is movably connected to one side of the guide rod 14, and one end of the conveying box 11 is movably connected to one side of the maintenance ladder 10;

[0026] When the shielded pump body 2 needs to be carried to the top of the operating table 3 for installation and testing, the shielded pump body 2 is first placed in the conveying box 11, and then the motor 12 is started. The motor 12 will drive the threaded rod 13 to rotate, and the threaded rod 13 will drive the movable block 15 to move upward, and the movable block 15 will drive the conveying box 11 to move upward, so that the shielded pump body 2 is transported to the top side of the operating table 3 through the conveying box 11, so that the staff can climb to the top of the operating table 3 through the maintenance ladder 10, and then take out the shielded pump body 2 from the inside of the conveying box 11 for installation and testing, which is simple and convenient to operate, and is relatively labor-saving and safe.

[0027] Further, one end of the base 1 is fixedly connected to two guide rods 14, the top of the guide rod 14 is fixedly connected to the bottom of the operating table 3, and one side of the conveying box 11 is fixedly connected to two limit blocks 16, and the limit blocks 16 are movably connected to the outside of the guide rod 14;

[0028] When the conveying box 11 moves up and down, the conveying box 11 will drive the limit block 16 to move up and down, and the limit block 16 will move up and down along the outside of the guide rod 14. By providing the guide rod 14 and the limit block 16, the conveying box 11 can maintain a stable state when moving up and down along one side of the guide rod 14;

[0029] The limit blocks 16 are "L" shaped, and the two limit blocks 16 are clamped on the outside of the two guide rods 14. Since the two limit blocks 16 are opposite "L" shapes, the two limit blocks 16 are fixedly connected to the conveying box 11, thereby limiting the conveying box 11 to prevent the conveying box 11 from being separated from one side of the guide rod 14;

[0030] Furthermore, an expansion joint is installed in the middle of the liquid outlet pipe 5 and the liquid inlet pipe 9, and a thermometer is installed at one end of the liquid outlet pipe 5 and the liquid inlet pipe 9. The expansion joint is mainly used to absorb and compensate for thermal expansion or contraction caused by temperature changes. A flexible structure is formed on the pipeline to cope with additional stresses caused by temperature differences and mechanical vibrations. The temperature of the liquid can be measured by providing a thermometer.

[0031] Working principle: by placing the shielded pump body 2 into the conveying box 11, and then starting the motor 12, the motor 12 will drive the threaded rod 13 to rotate, the threaded rod 13 will drive the movable block 15 to move upward, and the movable block 15 will drive the conveying box 11 to move upward to one side of the operating table 3. The staff will climb to the top of the operating table 3 through the maintenance ladder 10, and then take out the shielded pump body 2 from the inside of the conveying box 11 for installation and testing. The operation is simple and convenient. After installing the shielded pump body 2 on the top of the tank body 4, start the shielded pump body 2, and the shielded pump body 2 will convey the alloy liquid inside the tank body 4 to the liquid outlet pipe 5, and then make the liquid pass through the liquid outlet pipe 5 to the Venturi flowmeter 7. The flow rate of the pipeline can be measured by the Venturi flowmeter 7. After passing through the Venturi flowmeter 7, the liquid reaches the valve 8 through the pipeline. Finally, the liquid will enter the interior of the tank body 4 through the liquid inlet pipe 9, thus forming a cycle.

[0032] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A lead-based alloy canned motor pump steady-state flow test device, comprising a base (1) and a canned motor pump body (2), characterized in that: An operating table (3) is arranged on the top of the base (1); a shielded pump body (2) is arranged on one end of the top of the operating table (3); a tank body (4) is assembled and connected to the bottom of the shielded pump body (2); the top of the tank body (4) is fixedly connected to the operating table (3); a liquid outlet pipe (5) is fixedly connected to the bottom of the tank body (4); a flow regulating bypass (6) is fixedly connected to the bottom of the tank body (4); one end of the flow regulating bypass (6) is fixedly connected to one end of the liquid outlet pipe (5); one end of the liquid outlet pipe (5) is fixedly connected to a venturi flowmeter (7); one end of the venturi flowmeter (7) is connected to a valve (8) via a pipeline; one end of the valve (8) is fixedly connected to a liquid inlet pipe (9); one end of the liquid inlet pipe (9) is fixedly connected to one side of the tank body (4); A motor (12) is provided at one end of the base (1), a threaded rod (13) is fixedly connected to the top of the motor (12), a movable block (15) is threadedly connected to the top of the threaded rod (13), and one end of the movable block (15) is fixedly connected to the conveying box (11).

2. A lead-based alloy canned pump steady-state flow test device according to claim 1, characterized in that: One end of the base (1) is fixedly connected to two guide rods (14), and the top of the guide rod (14) is fixedly connected to the bottom of the operating table (3).

3. A lead-based alloy canned pump steady-state flow test device according to claim 2, characterized in that: Two limit blocks (16) are fixedly connected to one side of the conveying box (11), and the limit blocks (16) are movably connected to the outside of the guide rod (14).

4. A lead-based alloy canned pump steady-state flow test device according to claim 3, characterized in that: The limit block (16) is L-shaped.

5. A lead-based alloy canned pump steady-state flow test device according to claim 1, characterized in that: A maintenance ladder (10) is provided at one end of the base (1), and the top of the maintenance ladder (10) is fixedly connected to one end of the operating table (3).

6. A lead-based alloy canned pump steady-state flow test device according to claim 1, characterized in that: The inner side of the conveying box (11) is movably connected to one side of the guide rod (14), and one end of the conveying box (11) is movably connected to one side of the maintenance ladder (10).

7. A lead-based alloy canned pump steady-state flow test device according to claim 1, characterized in that: An expansion joint is installed in the middle of the liquid outlet pipe (5) and the liquid inlet pipe (9), and a thermometer is installed at one end of the liquid outlet pipe (5) and the liquid inlet pipe (9).

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