Driving water supply device for speed regulation of steam turbine

Abstract

The utility model relates to the technical field of driving water feeding pumps for turbine speed regulation, in particular to a driving water feeding device for turbine speed regulation, which comprises a base, a variable frequency motor and a water pump are fixedly mounted on the upper surface of the base, a flange plate is fixedly mounted at a port of the water pump, and the variable frequency motor is fixedly connected with the water pump. A guide structure is arranged on the surface of the base and comprises guide grooves formed in the two sides of the base, guide seats are slidably mounted on the inner walls of the two guide grooves and located below the base, and reserved grooves are formed in the inner sides, close to the base, of the guide seats. And a plurality of rolling shafts are rotationally mounted on the inner wall of the reserved groove in the guide seat. The guide structure is arranged, so that flexible guide work during assembly of the driving feed pump and the steam turbine is facilitated, and the assembly efficiency of the driving feed pump and the steam turbine is improved to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of drive feedwater pumps for turbine speed regulation, and in particular to a drive feedwater device for turbine speed regulation. Background Technology

[0002] The feedwater pump for turbine speed regulation is a key auxiliary device in the turbine system. This device can quickly respond to the turbine speed regulation requirements and ensure a stable supply of suitable feedwater to the turbine under different operating conditions, playing an important role in ensuring the safe and efficient operation of the turbine.

[0003] Existing technologies often have the following drawbacks: During the periodic disassembly and maintenance of the feedwater pump and the steam turbine, workers need to precisely align the flanges on the steam turbine and the feedwater pump to complete the assembly. Due to the large weight of the feedwater pump, workers need to spend a considerable amount of time moving it to align the flanges on the steam turbine and the feedwater pump, increasing the difficulty of assembling the two.

[0004] Therefore, this utility model provides a drive water supply device for turbine speed regulation. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of the existing technology, which makes it inconvenient to quickly connect and assemble the steam turbine and the drive feedwater pump, and to propose a drive feedwater device for steam turbine speed regulation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a turbine speed regulation drive water supply device, comprising a base, a variable frequency motor and a water pump fixedly mounted on the upper surface of the base, a flange fixedly mounted on the port of the water pump, the variable frequency motor and the water pump being fixedly connected, a guide structure provided on the surface of the base, the guide structure comprising guide grooves formed on both sides of the base, guide seats slidably mounted on the inner walls of the two guide grooves, the guide seats being located below the base.

[0007] The effect achieved by the above-mentioned components is that by setting up a guide structure, it facilitates flexible guiding work when assembling the drive feedwater pump and the steam turbine, and improves the assembly efficiency between the drive feedwater pump and the steam turbine to a certain extent.

[0008] Preferably, the guide seat has a reserved groove on the inner side near the base, and several rollers are rotatably installed on the inner wall of the reserved groove on the guide seat.

[0009] The effect achieved by the above components is that the rollers play a role in rolling friction when the device moves, reducing the friction between the guide seat and the fixed seat, making the pushing device easier and less strenuous.

[0010] Preferably, a rectangular block is fixedly connected to the upper side of the base, and a sliding pin is slidably connected inside the rectangular block. Several insertion holes are provided on the side wall of the base, and the size of the sliding pin is adapted to the size of the insertion hole.

[0011] The effect achieved by the above components is that the sliding pin automatically inserts into the socket, thereby initially positioning the drive water supply device and preventing it from shifting significantly during the docking process.

[0012] Preferably, a stop block is fixedly connected to the side wall of the sliding pin, and a spring is sleeved on the surface of the sliding pin, with the two ends of the spring being fixedly connected to the stop block and the rectangular block, respectively.

[0013] The effect achieved by the above components is that, under the action of the spring, the sliding pin will automatically insert into the socket.

[0014] Preferably, the surface of the guide seat is provided with an auxiliary device, the auxiliary device including a plurality of fixed plates fixedly connected to both sides of the guide seat, a limit pin slidably connected inside the fixed plate, a positioning plate fixedly connected to the lower end of the limit pin, and a caster wheel installed on the lower surface of the positioning plate.

[0015] The effect achieved by the above-mentioned components is that by setting auxiliary devices and flexible omnidirectional wheels, it is convenient to move the drive water supply device flexibly over long distances, and the difficulty for staff to carry the drive water supply device is reduced.

[0016] Preferably, the fixed plate is internally threaded with a drive rod, and the drive rod is internally rotatably connected to the positioning plate.

[0017] The effect achieved by the above components is that by rotating the drive rod, which is rotatably connected to the inside of the positioning plate, rotating the drive rod will cause the positioning plate to move downward along the fixed plate.

[0018] Preferably, the lower surface of the guide seat is fixedly connected with several protrusions.

[0019] The effect achieved by the above components is that the several protrusions fixedly connected to the lower surface of the guide seat can increase the friction between the guide seat and the ground when the caster is retracted and lifted, thus ensuring the stability of the device.

[0020] In summary:

[0021] 1. In this utility model, under the action of the spring, the sliding pin will automatically insert into the socket, thereby initially positioning the drive water supply device and preventing large displacement during docking. The stop block and the spring sleeved on the surface of the sliding pin are fixedly connected to the side wall of the sliding pin. The two ends of the spring are fixedly connected to the stop block and the rectangular block respectively. This design ensures that the sliding pin can be stably inserted into the socket. When the position needs to be adjusted, the sliding pin can also be pulled out by overcoming the elastic force of the spring. By setting the guide structure, it is convenient to flexibly guide the assembly of the drive water supply pump and the steam turbine, and improves the assembly efficiency of the drive water supply pump and the steam turbine to a certain extent.

[0022] 2. In this utility model, several protruding strips fixedly connected to the lower surface of the guide seat can increase the friction between the guide seat and the ground when the casters are retracted and lifted, ensuring the stability of the device placement. By setting auxiliary devices and flexible extendable casters, it is convenient to move the drive water supply device flexibly over long distances, reducing the difficulty for workers to move the drive water supply device. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the guide seat in this utility model;

[0025] Figure 3 In this utility model Figure 2 Another structural diagram from a different angle;

[0026] Figure 4 In this utility model Figure 1 Enlarged view of point A;

[0027] Figure 5 This is a schematic diagram of the auxiliary device in this utility model.

[0028] Legend: 1. Base; 2. Variable frequency motor; 3. Water pump; 4. Flange; 5. Guide structure; 501. Guide groove; 502. Guide seat; 503. Reserved groove; 504. Roller; 505. Insertion hole; 506. Rectangular block; 507. Sliding pin; 508. Stop block; 509. Spring; 510. Pull block; 6. Auxiliary device; 61. Fixing plate; 62. Raised strip; 63. Drive rod; 64. Positioning plate; 65. Caster wheel; 66. Limit pin. Detailed Implementation

[0029] Reference Figure 1As shown, this utility model provides a technical solution: a turbine speed regulation drive water supply device, including a base 1, a variable frequency motor 2 and a water pump 3 are fixedly installed on the upper surface of the base 1, a flange 4 is fixedly installed at the port of the water pump 3, the variable frequency motor 2 and the water pump 3 are fixedly connected, a guide structure 5 is provided on the surface of the base 1, and an auxiliary device 6 is provided on the surface of the guide seat 502.

[0030] The specific configuration and function of its guide structure 5 and auxiliary device 6 will be discussed below.

[0031] Reference Figure 1-4 As shown in this embodiment: the guide structure 5 includes guide grooves 501 on both sides of the base 1, and guide seats 502 are slidably installed on the inner walls of the two guide grooves 501, with the guide seats 502 located below the base 1. By setting the guide structure 5, the flexible guiding work during the assembly of the drive feedwater pump 3 and the steam turbine is facilitated, and the assembly efficiency between the drive feedwater pump 3 and the steam turbine is improved to a certain extent. A reserved groove 503 is provided on the inner side of the guide seat 502 near the base 1, and several rollers 504 are rotatably installed on the inner wall of the reserved groove 503 on the guide seat 502. The rollers 504 play a rolling friction role when the device moves, reducing the friction between the guide seat 502 and the fixed seat, making the pushing device easier and less strenuous. A rectangular block 506 is fixedly connected to the upper side of the base 1, and a sliding pin 507 is slidably connected inside the rectangular block 506. Several insertion holes 505 are provided on the side wall of the base 1, and the size of the sliding pin 507 matches the size of the insertion hole 505. The sliding pin 507 automatically inserts into the socket 505, thereby initially positioning the drive water supply device and preventing significant displacement during docking. A stop block 508 is fixedly connected to the side wall of the sliding pin 507, and a spring 509 is fitted onto the surface of the sliding pin 507. The two ends of the spring 509 are fixedly connected to the stop block 508 and the rectangular block 506, respectively. Under the action of the spring 509, the sliding pin 507 automatically inserts into the socket 505.

[0032] Reference Figure 1-3 and Figure 5As shown, specifically, the auxiliary device 6 includes several fixed plates 61 fixedly connected to both sides of the guide seat 502. A limit pin 66 is slidably connected inside the fixed plate 61, and a positioning plate 64 is fixedly connected to the lower end of the limit pin 66. A caster wheel 65 is mounted on the lower surface of the positioning plate 64. By setting the auxiliary device 6 and the flexibly extendable caster wheel 65, the flexible movement of the drive water supply device during long-distance movement is facilitated, reducing the difficulty for workers to handle the drive water supply device. A drive rod 63 is threadedly connected inside the fixed plate 61, and the drive rod 63 is rotatably connected to the internal interior of the positioning plate 64. By rotating the drive rod 63, the drive rod 63 is rotatably connected to the internal interior of the positioning plate 64, and rotating the drive rod 63 will cause the positioning plate 64 to move downwards along the fixed plate 61. Several protrusions 62 are fixedly connected to the lower surface of the guide seat 502. The protrusions 62 fixedly connected to the lower surface of the guide seat 502 can increase the friction between the guide seat 502 and the ground when the caster wheel 65 is retracted and raised, ensuring the stability of the device placement.

[0033] Working principle: When the drive water supply device needs to be moved closer to the turbine, guide grooves 501 are provided on both sides of the base 1, and guide seats 502 are slidably installed on the inner wall of the guide grooves 501. Workers can push the guide seats 502 along the direction of the guide grooves 501, thereby moving the entire device. This makes the movement more stable and directional, avoiding random deviations and greatly reducing the difficulty of directional adjustment during docking. Several rollers 504 are rotatably installed in the reserved groove 503 on the inner side of the guide seat 502 near the base 1. The rollers 504 play a rolling friction role when the device moves, reducing the friction between the guide seat 502 and the fixed seat, making the push of the device easier and less strenuous. After the drive water supply device is moved to a suitable position close to the turbine, the sliding pin 507 can slide within the rectangular block 506. When the sliding pin 507 aligns with the appropriate socket 505, the sliding pin 507 will automatically insert into the socket 505 under the action of the spring 509, thereby initially positioning the drive water supply device and preventing large displacement during docking. The stop block 508 fixedly connected to the side wall of the sliding pin 507 and the spring 509 sleeved on the surface of the sliding pin 507, with the two ends of the spring 509 fixedly connected to the stop block 508 and the rectangular block 506 respectively, ensure that the sliding pin 507 can be stably inserted into the socket 505. When the position needs to be adjusted, the sliding pin 507 can also be pulled out by overcoming the elastic force of the spring 509. By setting the guide structure 5, the flexible guiding work during the assembly of the drive water supply pump 3 and the steam turbine is facilitated, which improves the assembly efficiency of the drive water supply pump 3 and the steam turbine to a certain extent.

[0034] When it is necessary to move the position of the drive water supply device, the drive rod 63 can be rotated. The drive rod 63 is rotatably connected to the positioning plate 64. Rotating the drive rod 63 will cause the positioning plate 64 to move downward along the fixed plate 61, so that the caster wheel 65 contacts the ground and supports the device to a certain height. At this time, the device can be moved by pushing the caster wheel 65, which reduces the difficulty for the staff to move the drive water supply device. Several protrusions 62 fixedly connected to the lower surface of the guide seat 502 can increase the friction between the guide seat 502 and the ground when the caster wheel 65 is retracted and lifted, ensuring the stability of the device. By setting the auxiliary device 6 and the flexible extendable caster wheel 65, it is convenient to move the drive water supply device flexibly when moving it over long distances, which reduces the difficulty for the staff to carry the drive water supply device.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A drive feedwater device for speed control of a steam turbine, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly installed with a variable frequency motor (2) and a water pump (3), the port of the water pump (3) is fixedly installed with a flange (4), the variable frequency motor (2) and the water pump (3) are fixedly connected, the surface of the base (1) is provided with a guide structure (5), the guide structure (5) comprises guide grooves (501) opened on both sides of the base (1), the inner walls of the two guide grooves (501) are slidably installed with guide seats (502), and the guide seats (502) are located below the base (1).

2. A drive feed water device for speed governing of a steam turbine according to claim 1, characterized in that: The inner side of the guide seat (502) close to the base (1) is provided with a reserved groove (503), and a plurality of rolling shafts (504) are rotatably installed on the inner wall of the reserved groove (503) of the guide seat (502).

3. A drive feed water device for speed governing of a steam turbine according to claim 1, characterized in that: The upper side of the base (1) is fixedly connected with a rectangular block (506), the inside of the rectangular block (506) is slidably connected with a sliding pin (507), the side wall of the base (1) is provided with a plurality of insertion holes (505), and the size of the sliding pin (507) is matched with the size of the insertion hole (505).

4. A drive feed water device for speed governing of a steam turbine according to claim 3, characterized in that: The side wall of the sliding pin (507) is fixedly connected with a stop block (508), the surface of the sliding pin (507) is sleeved with a spring (509), and the two ends of the spring (509) are fixedly connected with the stop block (508) and the rectangular block (506) respectively.

5. A drive feed water device for speed governing of a steam turbine according to claim 1, characterized in that: The surface of the guide seat (502) is provided with an auxiliary device (6), the auxiliary device (6) comprises a plurality of fixed plates (61) fixedly connected on both sides of the guide seat (502), the inside of the fixed plate (61) is slidably connected with a limiting pin (66), the lower end of the limiting pin (66) is fixedly connected with a positioning plate (64), and the lower surface of the positioning plate (64) is installed with a universal wheel (65).

6. A drive feed water device for speed governing of a steam turbine according to claim 5, characterized in that: The inside of the fixed plate (61) is threadedly connected with a driving rod (63), and the inside of the driving rod (63) and the positioning plate (64) is rotatably connected.

7. A drive feed water device for speed governing of a steam turbine according to claim 1, characterized in that: The lower surface of the guide seat (502) is fixedly connected with a plurality of convex strips (62).

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