An adjustable type impeller hot-charged well lid device and a method for using the same

Abstract

The present application relates to a hot loading well lid device with impeller, in particular to an adjustable hot loading well lid device with impeller and a using method thereof, comprising a fixed part and an adjusting part, the fixed part comprises a fixed seat, anchor bolts and an inclined iron group; the fixed seat is fixedly connected with the anchor bolts embedded in the hot loading well foundation; the lower section of the inclined iron group is fixed in the hot loading well foundation, and the upper section is supported at the bottom of the fixed seat; the upper section and the lower section of the inclined iron group are fixed; the adjusting part is composed of an adjusting seat, a gasket and a screw, the adjusting seat is connected with the fixed seat through the screw; the sleeve ring group is composed of multiple sleeve rings, and is clamped on the inner wall and the upper surface of the adjusting seat through buckles; the surface of the adjusting seat and the sleeve ring group is horizontal, the fixed seat is embedded in the hot loading well pit by cement pouring, and the upper surface of the adjusting seat is horizontal with the ground; the device solves the problems of the existing technology, such as the levelness of the sleeve ring group cannot be adjusted, the circular sleeve ring is easy to deform, the runout value of the impeller after hot loading is large, resulting in poor product quality and low production efficiency.

Description

Technical Field

[0001] This invention relates to a hot-fitting impeller manhole cover device, specifically to an adjustable hot-fitting impeller manhole cover device and its usage method. Background Technology

[0002] The impeller is a key component of the centrifugal compressor rotor. The rotor typically weighs between 5 and 23 tons. The impeller's rotation performs work on the gas, imparting pressure and velocity energy. Currently, approximately 90% of impellers on centrifugal compressor rotors are installed using a heat-fitting method. The heat-fitting process involves heating the impeller and placing it horizontally on a heat-fitted manhole cover in the pit. The main shaft is then lifted and passed through the impeller's inner bore for heat-fitting. Figure 1 As shown, check the runout values ​​of the impeller end face and outer circle after the impeller cools down. Due to the different inner diameters of the impellers, traditional hot-fitting manhole covers are designed to accommodate different sizes of impeller inner diameters. These are positioned on a fixed base via a stop, and the fixed base is then thermally fixed to the manhole foundation using bolts or anchor bolts. Figure 2 As shown.

[0003] Because a momentary impact force is generated on the impeller during the hot-fitting and shaft-insertion process, the ring of the hot-fitted manhole cover is prone to deformation under the impact force after a period of use, resulting in a significant deviation in the levelness of the impeller placement. Traditional hot-fitted manhole covers cannot adjust the levelness of the ring assembly. This significant deviation in impeller levelness directly affects the runout value of the hot-fitted impeller, leading to poor finished product quality, low pass rate, and failure to meet design requirements. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable impeller hot-fitting manhole cover device and its usage method, in order to solve the technical problems existing in the prior art, such as the inability to adjust the level of the hot-fitting manhole cover ring assembly, the easy deformation of the ring, and the large runout value of the impeller after hot fitting, resulting in poor finished product quality, low pass rate, and thus material waste and low production efficiency.

[0005] To achieve the above objectives, the technical solution provided by this invention is:

[0006] An adjustable impeller-type hot-fitting manhole cover device, characterized by:

[0007] Includes fixed parts and adjustable parts;

[0008] The fixing part includes a fixing seat, a wedge assembly, and anchor bolts; the fixing seat is a ring structure pre-embedded in the hot-filling well pit and coaxial with the hot-filling well, the inner wall of the fixing seat is flush with the inner wall of the hot-filling well, and the side of the fixing seat away from the hot-filling well is connected to the foundation of the hot-filling well by at least 4 anchor bolts.

[0009] The inclined iron assembly includes an upper section and a lower section that are connected to each other. The lower section is fixed in the hot-loading well foundation, and the upper section is fixed to the bottom of the fixing seat. The connecting surfaces of the upper section and the lower section are both inclined surfaces. The number of the inclined iron assemblies is at least 3.

[0010] The adjustment part includes an adjustment seat, a shim, screws, and a ring assembly. The adjustment seat is a ring structure coaxially arranged with the hot fitting well, and the inner diameter of the adjustment seat is the same as that of the fixed seat. The adjustment seat and the fixed seat are connected by at least three screws.

[0011] At least one washer is provided between the adjusting seat and the fixed seat at the fixing position of the screw;

[0012] The ring assembly is composed of multiple coaxial ring structures. The upper surface of the ring assembly is parallel to the upper surface of the adjusting seat, and the ring assembly is connected to the upper end of the adjusting seat through a stop.

[0013] Furthermore, the ring set includes multiple ring structures with successively decreasing diameters. The upper part of the ring structure is provided with a first stepped outer ring in the radial direction, and the lower part of the ring structure is provided with a stepped inner ring inward. The upper and lower surfaces of the first stepped outer ring are parallel to each other, and the lower surface of the first stepped outer ring and the upper surface of the stepped inner ring are located in the same plane.

[0014] Furthermore, a second stepped outer ring is provided at the lower part of the outer ring of the fixed seat, the outer wall of the upper part of the fixed seat is flush with the outer wall of the adjusting seat, and the second stepped outer ring is connected to the hot-fitting well foundation by anchor bolts.

[0015] Furthermore, one end of the anchor bolt is connected to the reinforcing steel bar pre-embedded in the hot-fill well foundation, and the other end of the anchor bolt is tightened and fixed to the second step outer ring of the fixing seat by a nut; a washer is provided between the nut and the second step outer ring of the fixing seat.

[0016] Furthermore, the upper and lower sections of the wedge assembly are welded together. Before welding, the upper surface of the wedge assembly is adjusted to be in the same horizontal plane. The wedge assembly and the second step outer ring of the fixing seat are both pre-embedded in the hot-filled cement well pit. The second step outer ring of the fixing seat is provided with a cylindrical vertical channel above each anchor bolt position. The nut is located at the bottom of the vertical channel, and the diameter of the vertical channel is larger than the outer diameter of the nut. The nut can be tightened or loosened through the vertical channel.

[0017] Furthermore, an annular cover plate is provided at the outlet position of the vertical channel. The diameter of the cover plate is larger than the diameter of the vertical channel, and the upper surface of the cover plate is flush with the upper surface of the adjustment seat.

[0018] Furthermore, the wedge assembly, anchor bolts, and screws are all evenly distributed circumferentially, and there are four of each.

[0019] Meanwhile, the present invention also provides a method for using an adjustable impeller hot-fitting well cover device, which is characterized by including the following steps:

[0020] S1. Place the fixing seat on the wedge assembly, adjust the wedge assembly, and check the levelness of the fixing seat surface. If the levelness meets the requirements, connect the upper and lower sections of the wedge assembly. If the levelness does not meet the requirements, readjust the wedge assembly until the levelness of the fixing seat surface meets the requirements.

[0021] S2, fix the anchor bolts to the fixing seat, and pour cement into the hot-fill well pit to fix the wedge assembly and the fixing seat;

[0022] S3. Place a shim on the upper surface of the inner ring of the fixed seat, then place the adjusting seat on the shim, and check the levelness of the adjusting seat surface. If the levelness meets the requirements, tighten the screw; if it does not meet the requirements, readjust the number of shims in the corresponding position until the levelness of the adjusting seat surface meets the requirements.

[0023] S4. According to the impeller diameter and inner hole size requirements, place the ring assembly, and then place the impeller to be heat-installed on its surface. Check the levelness of the impeller surface. If the levelness meets the requirements, perform the heat installation operation. If it does not meet the requirements, adjust the number of shims until the levelness of the impeller surface meets the requirements.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] 1. The device of the present invention adds an adjustment seat, which solves the problem that the level of the ring assembly of the traditional hot-fitted manhole cover cannot be adjusted. The use of this device can adjust the level of the working surface and improve the level of the hot-fitted manhole cover surface.

[0026] 2. The shims between the adjusting part and the fixed part of the device of the present invention can adjust the levelness of the working surface of the adjusting seat, thereby effectively reducing the runout value of the impeller after hot mounting, improving the quality of the finished product and production efficiency, and avoiding material waste;

[0027] 3. The ring assembly of the device of the present invention is composed of multiple rings, and the rings are connected by a stop. The number of rings in the ring assembly can be increased or decreased according to the needs of use. It can be used for heat fitting of impellers of different sizes. At the same time, because the device adds a buffer adjustment part, the ring assembly is not easily deformed during use.

[0028] 4. The device of the present invention has vertical channels at each nut position, which can be used to loosen and tighten the anchor bolts of the fixing seat, making it easy to install and disassemble the fixing seat, which is very flexible and convenient;

[0029] 5. The device of the present invention can adjust the level of the fixed seat through four sets of wedges, overcoming the disadvantage that the level of the fixed seat is difficult to adjust in traditional devices. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a traditional hot-fit manhole cover;

[0031] Figure 2 This is a cross-sectional view of the adjustable impeller hot-fitting manhole cover device along the anchor bolt direction in an embodiment of the present invention;

[0032] Figure 3 This is a cross-sectional view of the adjustable impeller hot-fitting manhole cover device along the direction of the inclined iron assembly in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the ring assembly in an embodiment of the present invention.

[0034] The attached figures are labeled as follows:

[0035] 1-Adjusting seat, 2-Ring assembly, 3-Fixing seat, 4-Cover plate, 5-Shim, 6-Wedge assembly, 7-Anchor bolt, 8-Rebar, 9-Nut, 10-Washer, 11-Screw, 12-Vertical channel. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0037] like Figure 2As shown, an adjustable impeller-type hot-fitting manhole cover device includes a fixing part and an adjusting part. The fixing part includes a fixing seat 3, anchor bolts 7, and a wedge assembly 6. The fixing seat 3 has a concentric ring structure. A second stepped outer ring is provided at the lower part of the outer ring of the fixing seat 3. The outer wall of the upper part of the fixing seat 3 is flush with the outer wall of the adjusting seat 1. The second stepped outer ring is connected to the hot-fitting manhole foundation by four anchor bolts 7. One end of the anchor bolt 7 is connected to the steel bar 8 embedded in the hot-fitting manhole foundation, and the other end of the anchor bolt 7 is tightened to the second stepped outer ring of the fixing seat 3 by a nut 9. The nut 9 is tightened to the second stepped outer ring of the fixing seat 3. Washers 10 are provided between the outer rings of the two steps; four inclined iron groups 6 are evenly distributed around the hot-filling well. Each inclined iron group 6 includes an upper section and a lower section that are connected to each other. The lower section is fixed in the foundation of the hot-filling well, and the upper section is fixed to the bottom of the fixing seat 3. The connecting surfaces of the upper and lower sections are both inclined surfaces; the adjustment part consists of an adjusting seat 1, a washer 5, a collar group 2, and screws 11. The adjusting seat 1 is a ring structure concentric with the hot-filling well. The adjusting seat 1 and the fixing seat 3 are connected to the side of the hot-filling well by four evenly distributed screws 11. The screws 11 are fixed at the fixing positions between the adjusting seat 1 and the fixing seat 3. Multiple shims 5 are provided, and the inner wall of the adjusting seat 1 is flush with the inner wall of the fixed seat 3; the ring assembly 2 includes multiple ring structures with successively decreasing diameters, the upper part of the ring structure has a first stepped outer ring arranged radially, and the lower part of the ring structure has a stepped inner ring arranged inwardly, the upper and lower surfaces of the first stepped outer ring are parallel to each other, and the lower surface of the first stepped outer ring and the upper surface of the stepped inner ring are located in the same plane, the edge of the ring assembly 2 is provided with a stop, and it is horizontally locked to the inner wall and upper surface of the adjusting seat 1 through the stop, the upper surface of the ring assembly 2 is parallel to the upper surface of the adjusting seat 1; wedge. Both the second step outer ring of group 6 and the fixed seat 3 are pre-embedded in the hot-filling well pit for secondary grouting. The second step outer ring of the fixed seat 3 is provided with a cylindrical vertical channel 12 above each installation anchor bolt 7 position. The nut 9 is located at the bottom of the vertical channel 12. The diameter of the vertical channel 12 is larger than the outer diameter of the nut 9. An annular cover plate 4 is provided at the outlet position of each vertical channel 12. The diameter of the cover plate 4 is larger than the width of the vertical channel 12. The upper surface of the cover plate 4 is on the same horizontal plane as the upper surface of the adjusting seat 1, which is denoted as surface A. The horizontal plane where the collar group is located is denoted as surface B. Surface A and surface B are parallel.

[0038] When using the adjustable impeller hot-fitting manhole cover device, first place the fixed seat 3 on the wedge assembly 6, adjust the wedge assembly 6, and check the levelness of the surface of the fixed seat 3. If the levelness meets the requirements, weld the upper and lower sections of the wedge assembly 6. If the levelness does not meet the requirements, readjust the wedge assembly 6 until the levelness of the surface of the fixed seat 3 meets the requirements. Then, fix the anchor bolts 7 to the fixed seat 3 with nuts 9. Next, pour cement into the hot-fitting manhole pit to fix the wedge assembly 6 and the fixed seat 3. Place a shim 5 on the upper surface of the inner ring of the fixed seat 3, and place the adjusting seat 1 on the shim 5. Check the levelness of the surface of the adjusting seat 1. If the levelness meets the requirements, tighten screw 11 to connect the adjusting seat 1 to the fixed seat 3. If it does not meet the requirements, adjust the number of shims 5 in the corresponding positions until the levelness of the surface of the adjusting seat 1 meets the requirements. According to the different sizes of the impeller diameter and inner hole, increase or decrease the number of rings until the inner diameter of the ring group 2 meets the usage requirements. Place the ring group 2 on the adjusting seat 1 through the stop. Place the impeller to be heated on the upper surface of the ring group 2 and check the levelness of the impeller. If the levelness meets the requirements, the heating and assembly can be carried out. If the levelness does not meet the requirements, it is necessary to readjust the levelness until it meets the requirements.

[0039] This embodiment demonstrates that the adjustment section added to the device of the present invention solves the problem that the level of the ring assembly 2 cannot be adjusted by the traditional hot-fitting manhole cover. The level of the surface of the ring assembly 2 can be freely adjusted by increasing or decreasing the number of shims 5. By adding the adjustment seat 1 and shims 5, the instantaneous impact force generated during the hot-fitting and shaft-penetrating process of the impeller is effectively buffered, the service life of the ring assembly 2 is extended, and production efficiency is significantly improved and production costs are reduced.

Claims

1. An adjustable type impeller hot loading well lid device, characterized in that: it comprises a fixed part and an adjusting part; the fixed part comprises a fixed seat (3), an inclined iron group (6) and a foundation bolt (7); the fixed seat (3) is a circular ring structure embedded in the hot loading well pit and coaxial with the hot loading well, the inner wall of the fixed seat (3) is flush with the inner wall of the hot loading well, and the fixed seat (3) is connected with the hot loading well foundation through at least four foundation bolts (7); the inclined iron group (6) comprises an upper segment and a lower segment connected with each other, the lower segment is fixed in the hot loading well foundation, and the upper segment is fixed at the bottom of the fixed seat (3); the connecting surfaces of the upper segment and the lower segment are both inclined surfaces; the number of the inclined iron group (6) is at least three groups; the adjusting part comprises an adjusting seat (1), a gasket (5), a screw (11) and a sleeve ring group (2); the adjusting seat (1) is a circular ring structure coaxial with the hot loading well and has the same inner diameter as the fixed seat (3); the adjusting seat (1) is connected with the fixed seat (3) through at least three screws (11); at least one gasket (5) is arranged between the adjusting seat (1) and the fixed seat (3) at the fixed position of the screw (11); the sleeve ring group (2) is composed of a plurality of coaxial ring structures, the upper surface of the sleeve ring group (2) is parallel to the upper surface of the adjusting seat (1), and the sleeve ring group (2) is connected to the upper end of the adjusting seat (1) through a stop opening; the sleeve ring group (2) comprises a plurality of ring structures with diameters decreasing in sequence; the upper part of the ring structure is provided with a first stepped outer ring in the radial direction; the lower part of the ring structure is provided with a stepped inner ring inwardly; the upper surface and the lower surface of the first stepped outer ring are parallel to each other; the lower surface of the first stepped outer ring and the upper surface of the stepped inner ring are in the same plane; the lower part of the outer ring of the fixed seat (3) is provided with a second stepped outer ring; the outer wall of the upper part of the fixed seat (3) is flush with the outer wall of the adjusting seat (1); the second stepped outer ring is connected with the hot loading well foundation through the foundation bolt (7); the inclined iron group (6) and the second stepped outer ring of the fixed seat (3) are embedded in the hot loading well pit poured with cement; the second stepped outer ring of the fixed seat (3) is provided with a cylindrical vertical channel (12) above each installed foundation bolt (7) position; a nut (9) is located at the bottom of the vertical channel (12); the diameter of the vertical channel is greater than the outer diameter of the nut (9); the outlet position of the vertical channel (12) is provided with a ring-shaped cover plate (4); the diameter of the cover plate (4) is greater than the diameter of the vertical channel (12); and the upper surface of the cover plate (4) is flush with the upper surface of the adjusting seat (1).

2. The adjustable type impeller hot loading well lid device according to claim 1, characterized in that: one end of the foundation bolt (7) is connected with a steel bar (8) embedded in the hot loading well foundation; the other end of the foundation bolt (7) is tightly fixed with the second stepped outer ring of the fixed seat (3) through a nut (9); and a gasket (10) is arranged between the nut (9) and the second stepped outer ring of the fixed seat (3).

3. The adjustable type impeller hot loading well lid device according to claim 2, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The upper section and the lower section of the inclined iron group (6) are welded.

4. The adjustable impeller hot-charging well lid device according to claim 3, characterized in that: The inclined iron group (6), anchor bolts (7) and screws (11) are evenly distributed in the circumferential direction, and the number of each is four.

5. A method of using the adjustable impeller thermal well lid apparatus of claim 1, wherein, Comprising the following steps: S1, placing the fixed seat (3) on the inclined iron group (6), adjusting the inclined iron group (6), detecting the levelness of the surface of the fixed seat (3), connecting the upper section and the lower section of the inclined iron group (6) if the levelness meets the requirements, and readjusting the inclined iron group (6) until the levelness of the surface of the fixed seat (3) meets the requirements if the levelness does not meet the requirements; S2, fixing the anchor bolts (7) with the fixed seat (3), and pouring the inclined iron group (6) and the fixed seat (3) with cement in the hot-charging well pit; S3, placing the gasket (5) on the inner ring upper surface of the fixed seat (3), then placing the adjusting seat (1) on the gasket (5), detecting the levelness of the surface of the adjusting seat (1), tightening the screws (11) if the levelness meets the requirements, and adjusting the number of gaskets (5) at the corresponding position until the levelness of the surface of the adjusting seat (1) meets the requirements if the levelness does not meet the requirements; S4, placing the sleeve ring group (2) according to the diameter of the impeller and the size of the inner hole, then placing the impeller to be hot-charged on the surface thereof, detecting the levelness of the surface of the impeller, performing the hot-charging operation if the levelness meets the requirements, and readjusting the number of gaskets (5) until the levelness of the surface of the impeller meets the requirements if the levelness does not meet the requirements.

Images