Shock-resistant diesel generator fuel delivery unit module

Abstract

The invention provides an anti-seismic diesel generator fuel oil conveying unit module, belongs to the technical field of nuclear power plant emergency diesel generator set auxiliary systems, and aims to solve the technical problem of providing the anti-seismic diesel generator fuel oil conveying unit module. According to the adopted scheme, the shock-resistant diesel generator fuel oil conveying unit module comprises a base frame, an assembling frame, a first fuel oil conveying pump, a second fuel oil conveying pump and a duplex fuel oil filter, and a conveying pipeline network is arranged above the base frame; according to the shock-resistant diesel generator fuel oil conveying unit module, through the installation base frame, the assembly frame, the first fuel oil conveying pump, the second fuel oil conveying pump, the duplex fuel oil filter and the pipeline network, equipment and instruments are designed in a modular mode, assembly is convenient, overhaul and maintenance are convenient, damaged parts are replaced in time, and the service life of the diesel generator is prolonged. The emergency diesel generator set auxiliary system is applied to the technical field of emergency diesel generator set auxiliary systems of nuclear power plants.

Description

Technical Field

[0001] The invention relates to the technical field of emergency diesel generator set auxiliary systems in nuclear power plants, and in particular to a shock-resistant diesel generator fuel delivery unit module. Background Art

[0002] The emergency diesel generator set is installed in a separate plant building. When both the external working power supply and the external standby power supply are lost (normal, fault or accident conditions), the emergency diesel generator set can automatically start with load within 15 seconds and output power to supply the medium-voltage emergency switchboard to ensure the safe shutdown of the reactor. It belongs to the internal emergency power supply system of the plant building, among which the emergency diesel generator set auxiliary system is indispensable for the reliable and safe operation of the emergency diesel generator set.

[0003] The auxiliary systems of emergency diesel generator sets include fuel, lubricating oil, cooling water, compressed air, high and low temperature water, and intake and exhaust systems. Each system contains a large number of equipment, valves, pipes and fittings, instruments, brackets, etc. The existing nuclear power plant emergency diesel generator auxiliary system plant layout design is usually scattered, and each equipment is installed independently. This layout causes the nuclear power plant to increase the on-site construction workload. Therefore, in order to meet the cost, management, installation and maintenance requirements of nuclear power plants, it is a new solution to modularize the equipment, valves, pipes and fittings, instruments, brackets, etc., and realize overall assembly, inspection, factory testing and debugging in the factory.

[0004] Therefore, it is necessary to provide a new shock-resistant diesel generator fuel delivery unit module to solve the above-mentioned technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a shock-resistant diesel generator fuel delivery unit module.

[0006] The present invention provides: a base frame, an assembly frame, a first fuel delivery pump, a second fuel delivery pump and a duplex fuel filter, the inner wall of the base frame is symmetrically fixedly connected with the assembly frame, the first fuel delivery pump and the second fuel delivery pump are fixedly installed on the surface of the assembly frame, the duplex fuel filter is fixedly connected to the surface of the base frame, a delivery pipeline network is arranged above the base frame, and the delivery pipeline network is connected with the first fuel delivery pump, the second fuel delivery pump and the duplex fuel filter, the first fuel delivery pump and the second fuel delivery pump are fixedly installed on the surface of the assembly frame, the duplex fuel filter is fixedly installed on the surface of the base frame, the first fuel delivery pump, the second fuel delivery pump and the duplex fuel filter are connected through the delivery pipeline network, and the equipment and instruments adopt modular design, which is convenient for assembly, inspection and maintenance, and timely replacement of damaged parts.

[0007] Preferably, the input end and the output end of the first fuel delivery pump and the second fuel delivery pump are fixedly connected with the first metal hose and the second metal hose, and the first metal hose and the second metal hose are fixedly connected to the delivery pipeline network. The first metal hose and the second metal hose can reduce and absorb the vibration and noise of the internal pipe system of the module, and can also compensate for a certain displacement, thereby protecting the normal operation of the assembly frame and the first fuel delivery pump.

[0008] Preferably, the ball valve and the lift check valve are equidistantly fixedly installed on the surface of the ball valve and the lift check valve. The lift check valve facilitates the flow adjustment and maintenance of the first fuel delivery pump and the second fuel delivery pump, and the ball valve is used to prevent fuel backflow and prevent the first fuel delivery pump and the second fuel delivery pump and the drive motor from reversing.

[0009] Preferably, an I-frame is fixedly connected to the surface of the base frame, and the I-frame is located on one side of the duplex fuel filter, a mounting plate is fixedly connected to the surface of the I-frame, a pump control box and a pressure gauge are fixedly mounted on the surface of the mounting plate, a pressure detection tube is fixedly connected to the bottom of the pressure gauge, and the side of the pressure detection tube away from the pressure gauge is fixedly connected to the delivery pipeline network, the I-frame and the mounting plate are assembled, and then the pump control box and the pressure gauge are fixedly mounted on the surface of the mounting plate, the pump control box can control the start and stop of the first fuel delivery pump and the second fuel delivery pump, and the pressure gauge can display the pressure inside the delivery pipeline network.

[0010] Preferably, a drain sampling tube is fixedly connected to the surface of the conveying pipeline network, and a drain valve is fixedly connected to the side of the drain sampling tube away from the conveying pipeline network, which is beneficial to the maintenance and monitoring of the system.

[0011] Preferably, the inner wall of the base frame is symmetrically fixedly connected with connecting rods, the assembly frame and the surface of the connecting rods are fixedly connected with a support frame, and the interior of the support frame is connected to the conveying pipeline network. The connecting rods facilitate the fixed connection between the base frame and the support frame, and the support frame supports the conveying pipeline network as a whole to ensure that the conveying pipeline network will not shake easily during transportation.

[0012] Preferably, the base frame is symmetrically fixedly connected with lifting ears on the sides, and the base frame is symmetrically fixedly connected with a rectangular plate on the bottom. The lifting ears facilitate lifting the base frame, and the rectangular plate prevents the bottom of the base frame from directly contacting the ground, thereby reducing wear on the bottom of the base frame.

[0013] Preferably, the assembly rack is symmetrically rotatably connected to the inner walls of the first fuel delivery pump and the second fuel delivery pump with a threaded rod, and a rotating ring is meshingly connected to the surface of the threaded rod. The first fuel delivery pump and the second fuel delivery pump are brought close to the assembly rack, the mounting holes are aligned, the threaded rod is passed through the mounting hole, and the rotating ring is rotated to firmly connect the first fuel delivery pump and the second fuel delivery pump to the assembly rack, thereby facilitating quick installation or removal of the first fuel delivery pump and the second fuel delivery pump.

[0014] Compared with the related art, the present invention has the following beneficial effects:

[0015] The present invention provides:

[0016] 1. By installing the base frame, assembly frame, first fuel delivery pump, second fuel delivery pump, duplex fuel filter and pipeline network, the equipment and instruments adopt modular design, which is convenient for assembly, convenient for inspection and maintenance, timely replacement of damaged parts, and has strong earthquake resistance.

[0017] 2. The sides of the base frame are symmetrically fixed with lifting ears, and the bottom of the base frame is symmetrically fixed with a rectangular plate. The lifting ears facilitate lifting the base frame, and the rectangular plate prevents the bottom of the base frame from directly contacting the ground, thereby reducing wear on the bottom of the base frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 One of the overall structural schematic diagrams provided by the present invention;

[0019] Figure 2 The second schematic diagram of the overall structure provided by the present invention;

[0020] Figure 3 An enlarged schematic diagram of the base frame and the assembly frame provided by the present invention;

[0021] Figure 4 This is an enlarged schematic diagram of the assembly rack and the first fuel delivery pump provided by the present invention.

[0022] Numbers in the figure: 1. Base frame; 2. Assembly frame; 3. First fuel delivery pump; 4. Second fuel delivery pump; 5. Duplex fuel filter; 6. Pipeline network; 7. First metal hose; 8. Second metal hose; 9. Ball valve; 10. Lifting check valve; 11. I-beam frame; 12. Mounting plate; 13. Pump control box; 14. Pressure gauge; 15. Pressure detection tube; 16. Drain sampling tube; 17. Drain valve; 18. Connecting rod; 19. Support frame; 20. Lifting ear; 21. Rectangular plate; 22. Threaded rod; 23. Rotating ring. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0024] In the specific implementation process, Figure 1 and Figure 2As shown, it includes: a base frame 1, an assembly frame 2, a first fuel delivery pump 3, a second fuel delivery pump 4 and a duplex fuel filter 5. The inner wall of the base frame 1 is symmetrically fixedly connected with the assembly frame 2, the first fuel delivery pump 3 and the second fuel delivery pump 4 are fixedly installed on the surface of the assembly frame 2, and the duplex fuel filter 5 is fixedly connected to the surface of the base frame 1. A delivery pipeline network 6 is arranged above the base frame 1, and the delivery pipeline network 6 is connected with the first fuel delivery pump 3, the second fuel delivery pump 4 and the duplex fuel filter 5. The first fuel delivery pump 3 and the second fuel delivery pump 4 are fixedly installed on the surface of the assembly frame 2, and the duplex fuel filter 5 is fixedly installed on the surface of the base frame 1. The first fuel delivery pump 3, the second fuel delivery pump 4 and the duplex fuel filter 5 are connected through the delivery pipeline network 6. The equipment and instruments adopt a modular design, which is convenient for assembly, inspection and maintenance, and timely replacement of damaged parts.

[0025] refer to Figure 2 As shown, the input end and the output end of the first fuel delivery pump 3 and the second fuel delivery pump 4 are fixedly connected with the first metal hose 7 and the second metal hose 8, and the first metal hose 7 and the second metal hose 8 are fixedly connected with the delivery pipeline network 6. The first metal hose 7 and the second metal hose 8 can reduce and absorb the vibration and noise of the internal pipe system of the module, and can also compensate for a certain displacement, thereby protecting the normal operation of the assembly frame 2 and the first fuel delivery pump 3.

[0026] refer to Figure 2 As shown, the ball valve 9 and the lift check valve 10 are equidistantly fixedly installed on the surface of the ball valve 9 and the lift check valve 10. The lift check valve 10 is convenient for adjusting the flow of the first fuel delivery pump 3 and the second fuel delivery pump 4 and for maintenance. The ball valve 9 is used to prevent the fuel from flowing back and prevent the first fuel delivery pump 3 and the second fuel delivery pump 4 and the drive motor from reversing.

[0027] refer to Figure 2 As shown, an I-shaped frame 11 is fixedly connected to the surface of the base frame 1, and the I-shaped frame 11 is located on one side of the duplex fuel filter 5, a mounting plate 12 is fixedly connected to the surface of the I-shaped frame 11, a pump control box 13 and a pressure gauge 14 are fixedly mounted on the surface of the mounting plate 12, a pressure detection tube 15 is fixedly connected to the bottom of the pressure gauge 14, and the side of the pressure detection tube 15 away from the pressure gauge 14 is fixedly connected to the delivery pipeline network 6, the I-shaped frame 11 and the mounting plate 12 are assembled, and then the pump control box 13 and the pressure gauge 14 are fixedly mounted on the surface of the mounting plate 12, the pump control box 13 can control the start and stop of the first fuel delivery pump 3 and the second fuel delivery pump 4, and the pressure gauge 14 can display the pressure inside the delivery pipeline network 6.

[0028] refer to Figure 2As shown, a drain sampling tube 16 is fixedly connected to the surface of the delivery pipeline network 6, and a drain valve 17 is fixedly connected to the side of the drain sampling tube 16 away from the delivery pipeline network 6, which is beneficial to the maintenance and monitoring of the system.

[0029] refer to Figure 2 and Figure 3 As shown, the inner wall of the base frame 1 is symmetrically fixedly connected with a connecting rod 18, the assembly frame 2 and the surface of the connecting rod 18 are fixedly connected with a support frame 19, and the interior of the support frame 19 is connected with the conveying pipeline network 6. The connecting rod 18 facilitates the fixed connection between the base frame 1 and the support frame 19, and the support frame 19 supports the conveying pipeline network 6 as a whole to ensure that the conveying pipeline network 6 will not easily shake during transportation.

[0030] refer to Figure 3 As shown, the base frame 1 is symmetrically fixedly connected with a lifting ear 20 on the side, and the base frame 1 is symmetrically fixedly connected with a rectangular plate 21 on the bottom. The lifting ear 20 facilitates the lifting of the base frame 1, and the rectangular plate 21 prevents the bottom of the base frame 1 from directly contacting the ground, thereby reducing the wear on the bottom of the base frame 1.

[0031] refer to Figure 4 As shown, the assembly rack 2 is symmetrically rotatably connected to the inner walls of the first fuel delivery pump 3 and the second fuel delivery pump 4 with a threaded rod 22, and a rotating ring 23 is meshedly connected to the surface of the threaded rod 22. The first fuel delivery pump 3 and the second fuel delivery pump 4 are brought close to the assembly rack 2, the mounting holes are aligned, the threaded rod 22 is passed through the mounting holes, and the rotating ring 23 is rotated to firmly connect the first fuel delivery pump 3 and the second fuel delivery pump 4 to the assembly rack 2, so as to facilitate the quick installation or removal of the first fuel delivery pump 3 and the second fuel delivery pump 4.

[0032] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A seismic-resistant diesel generator fuel delivery unit module, comprising: A base frame (1), an assembly frame (2), a first fuel delivery pump (3), a second fuel delivery pump (4) and a duplex fuel filter (5); the inner wall of the base frame (1) is symmetrically fixedly connected with the assembly frame (2); the surface of the assembly frame (2) is fixedly mounted with the first fuel delivery pump (3) and the second fuel delivery pump (4); the surface of the base frame (1) is fixedly connected with the duplex fuel filter (5); and the base frame (1) is characterized in that a delivery pipeline network (6) is arranged above the base frame (1), and the delivery pipeline network (6) is connected with the first fuel delivery pump (3), the second fuel delivery pump (4) and the duplex fuel filter (5).

2. The earthquake-resistant diesel generator fuel delivery unit module according to claim 1, characterized in that: The input end and the output end of the first fuel delivery pump (3) and the second fuel delivery pump (4) are fixedly connected with a first metal hose (7) and a second metal hose (8), and the first metal hose (7) and the second metal hose (8) are fixedly connected with the delivery pipeline network (6).

3. The earthquake-resistant diesel generator fuel delivery unit module according to claim 1, characterized in that: Ball valves (9) and lifting check valves (10) are fixedly installed at equal intervals on the surface of the delivery pipeline network (6).

4. The earthquake-resistant diesel generator fuel delivery unit module according to claim 1, characterized in that: An I-shaped frame (11) is fixedly connected to the surface of the base frame (1), and the I-shaped frame (11) is located on one side of the duplex fuel filter (5). A mounting plate (12) is fixedly connected to the surface of the I-shaped frame (11), and a pump control box (13) and a pressure gauge (14) are fixedly mounted on the surface of the mounting plate (12). A pressure detection tube (15) is fixedly connected to the bottom of the pressure gauge (14), and the side of the pressure detection tube (15) away from the pressure gauge (14) is fixedly connected to the delivery pipeline network (6).

5. The earthquake-resistant diesel generator fuel delivery unit module according to claim 1, characterized in that: A drain sampling tube (16) is fixedly connected to the surface of the delivery pipeline network (6), and a drain valve (17) is fixedly connected to the side of the drain sampling tube (16) away from the delivery pipeline network (6).

6. The earthquake-resistant diesel generator fuel delivery unit module according to claim 1, characterized in that: The inner wall of the base frame (1) is symmetrically fixedly connected with a connecting rod (18), the assembly frame (2) and the surface of the connecting rod (18) are fixedly connected with a supporting frame (19), and the interior of the supporting frame (19) is connected to the conveying pipeline network (6).

7. The earthquake-resistant diesel generator fuel delivery unit module according to claim 1, characterized in that: The side of the base frame (1) is symmetrically fixedly connected with a lifting ear (20), and the bottom of the base frame (1) is symmetrically fixedly connected with a rectangular plate (21).

8. The earthquake-resistant diesel generator fuel delivery unit module according to claim 1, characterized in that: The assembly frame (2) is symmetrically rotatably connected to the inner walls of the first fuel delivery pump (3) and the second fuel delivery pump (4) with a threaded rod (22), and a rotating ring (23) is meshingly connected to the surface of the threaded rod (22).

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