CN215672584U - Novel metering pump power end device special for nuclear power - Google Patents
Novel metering pump power end device special for nuclear power Download PDFInfo
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- CN215672584U CN215672584U CN202121835661.8U CN202121835661U CN215672584U CN 215672584 U CN215672584 U CN 215672584U CN 202121835661 U CN202121835661 U CN 202121835661U CN 215672584 U CN215672584 U CN 215672584U
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Abstract
The utility model relates to a novel power end device of a metering pump special for nuclear power. The power box comprises a hydraulic end, a power box and a motor, and is characterized in that the hydraulic end and the motor are respectively positioned at the front end and the rear end of the power box, the hydraulic end and the motor are oppositely arranged, and the hydraulic end, the power box and the motor are arranged on the same straight line. The motor is arranged in a rear-mounted mode, the front end of the motor is used for installing the hydraulic end, so that the motor, the power box and the hydraulic end are in a straight line, the motor and the hydraulic end are respectively arranged at the rear end and the front end of the power box in a paired mode, the arrangement mode breaks through the traditional arrangement mode of the metering pump in the industry, the minimization of the width direction of the metering pump is guaranteed, and the requirement that the installation space of the existing nuclear power service metering pump is limited is met.
Description
Technical Field
The utility model relates to a novel power end device of a metering pump special for nuclear power.
Background
The current AP1000 nuclear power technology is sourced from the United states and has certain advancement. But the current state of the art is under tension and can be fraught with uncertainty over a significant period of time. Nuclear power is an industry seeking certainty, the problem of guaranteeing safe operation of equipment is the first problem, and the neck of the United states can not be blocked by people, so that the localization of the United states technology and the equipment is important. In the domestic replacement work of nuclear power metering pumps, the original field partial sampling inlet metering pump is narrow in width and long and narrow in installation space, the existing domestic metering pump is difficult to replace on the premise of not changing the installation space of the metering pump, and the installation space is generally not allowed to be changed in consideration of the safety of the nuclear power industry, so that the existing metering pump needs to be modified and upgraded to meet the installation requirement.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide a technical scheme of a novel metering pump power end device special for nuclear power.
The utility model provides a novel special measuring pump power end device of nuclear power, including hydraulic end, headstock and motor, its characterized in that hydraulic end and motor are located the front end and the rear end of headstock respectively, hydraulic end and motor are the opposition setting, and hydraulic end, headstock and motor setting are on a straight line.
The novel metering pump power end device special for nuclear power is characterized in that the motor is connected with the power box through the motor bracket, and the hydraulic end is connected with the power box through a screw.
The novel power end device of the metering pump special for nuclear power is characterized in that a lower bearing seat is arranged below a power box, an upper bearing seat is arranged above the power box, a first bearing is arranged in the lower bearing seat, a second bearing is arranged in the upper bearing seat, a worm wheel shaft is connected between the first bearing and the second shaft in a matched manner, a worm wheel and an eccentric wheel are arranged on the worm wheel shaft in a matched manner, the worm wheel is meshed with a worm arranged on one side and connected, and a connecting rod is arranged outside the eccentric wheel in a matched manner; one end of the worm is installed on the power box in a matched mode through a fourth bearing, and the other end of the worm is installed on the motor bracket through a third bearing.
The novel metering pump power end device special for nuclear power is characterized in that an output shaft of a motor is connected with a worm in a matched mode through a third flat key.
The novel power end device of the metering pump special for nuclear power is characterized in that a cross head is arranged in the power end, and the cross head is connected with a connecting rod in a rotating fit mode through a cross head pin.
The novel metering pump power end device special for nuclear power is characterized in that a first adjusting pad is arranged between the worm wheel shaft and the first bearing, and a second adjusting pad is arranged between the worm wheel shaft and the second bearing.
The novel metering pump power end device special for nuclear power is characterized in that the worm wheel is connected with the worm wheel shaft in a matched mode through the first flat key, and the eccentric wheel is connected with the worm wheel shaft in a matched mode through the second flat key.
The novel metering pump power end device special for nuclear power is characterized in that a second copper sleeve is arranged between the connecting rod and the eccentric wheel.
The novel metering pump power end device special for nuclear power is characterized in that retainer rings are arranged on two sides of the crosshead pin respectively, and a first copper sleeve is arranged between the crosshead pin and the connecting rod.
The novel metering pump power end device special for nuclear power is characterized in that a first framework oil seal and a second framework oil seal are arranged between the worm and the motor bracket in a matched mode.
The motor is arranged in a rear-mounted mode, the front end of the motor is used for installing the hydraulic end, so that the motor, the power box and the hydraulic end are in a straight line, the motor and the hydraulic end are respectively arranged at the rear end and the front end of the power box in a paired mode, the arrangement mode breaks through the traditional arrangement mode of the metering pump in the industry, the minimization of the width direction of the metering pump is guaranteed, and the requirement that the installation space of the existing nuclear power service metering pump is limited is met.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view B-B of FIG. 1;
in the figure: 1-a pump carriage; 2-crosshead; 3-a first copper sleeve; 4-a retainer ring; 5-crosshead pin; 6-connecting rod; 7-a first screw; 8-lower bearing seat; 9-a first bearing; 10-a first flat bond; 11-a worm gear shaft; 12-a first conditioning pad; 13-a worm gear; 14-a motor bracket; 15-a motor; 16-a second screw; 17-a third screw; 18-a second conditioning pad; 19-a second flat bond; 20-a second bearing; 21-eccentric wheel; 22-upper bearing seat; 23-a fourth screw; 24-a second copper sleeve; 25-a power box; 26-a third flat bond; 27-a first framework oil seal; 28-a second framework oil seal; 29-a third bearing; 30-a worm; 31-a fourth bearing; 32-fifth screw.
Detailed Description
The utility model will be further described with reference to the accompanying drawings in which:
the utility model provides a novel special measuring pump power end device of nuclear power, includes hydraulic end, headstock and motor, and hydraulic end and motor are located the front end and the rear end of headstock respectively, and hydraulic end and motor are the opposition setting, and hydraulic end, headstock and motor setting are on a straight line, and the motor passes through motor bracket to be connected with the headstock, and the hydraulic end passes through the screw to be connected with the headstock, and the structural design of this can guarantee to be applicable to the current measuring pump installation space of being in active service of nuclear power.
The lower bearing seat 8 is arranged below the power box, the upper bearing seat 22 is arranged above the power box, the first bearing 9 is arranged in the lower bearing seat, the second bearing 20 is arranged in the upper bearing seat, the first bearing and the second bearing are connected with the worm wheel shaft 11 in a matched mode, the first adjusting pad 12 is arranged between the worm wheel shaft and the first bearing, the second adjusting pad 18 is arranged between the worm wheel shaft and the second bearing, the center height of the worm wheel 13 is ensured to be consistent with that of the worm 30 by adjusting the thickness of the first adjusting pad 12, and the axial pre-tightening force and the clearance of the second bearing 20 and the first bearing 9 are adjusted by adjusting the thickness of the second adjusting pad 18; a worm wheel 13 and an eccentric wheel 21 are arranged on a worm wheel shaft in a matched mode, the worm wheel is connected with the worm wheel shaft in a matched mode through a first flat key 10, the worm wheel is connected with a worm 30 arranged on one side in a meshed mode, one end of the worm is installed on a power box in a matched mode through a fourth bearing, the other end of the worm is installed on a motor bracket 14 through a third bearing, the third bearing 29 and the fourth bearing 31 adopt tapered roller bearings, and a first framework oil seal and a second framework oil seal are further arranged between the worm and the motor bracket in a matched mode; the eccentric wheel is connected with the worm wheel shaft in a matched mode through a second flat key, a connecting rod is arranged outside the eccentric wheel in a matched mode, and a second copper sleeve is arranged between the connecting rod and the eccentric wheel.
In order to ensure that no power loss occurs, the output shaft of the motor is directly connected with the worm in a matched mode through a third flat key.
Be provided with the cross head in the power end, the cross head passes through the cross head round pin to be connected with connecting rod normal running fit, and cross head round pin both sides set up spacing retaining ring respectively, set up first copper sheathing between cross head round pin and the connecting rod.
The specific installation process is as follows: the outer ring of the fourth bearing 31 is arranged in a bearing hole of the power box 25 according to the figure 2, and the inner ring of the third bearing 29 and the inner ring of the fourth bearing 31 are arranged at two ends of the worm 30 according to the figure 2; sequentially installing the outer rings of the second framework oil seal 28 and the third bearing 29 into an inner hole at one end of the motor bracket 14 according to the figure 2, and installing the other end into the first framework oil seal 27; a lower bearing seat 8 is arranged at the bottom of the power box 25 and is fixed by a first screw 7; the first copper bush 3 and the second copper bush 24 are respectively pressed into holes of the connecting rod 6, the first copper bush 3 and the second copper bush 24 can play a wear-resistant role, the crosshead 2 is inserted into a small head of the connecting rod 6, a radial small hole of the crosshead 2 is concentric with an inner hole of the first copper bush 3, the crosshead pin 5 is installed, and then the check ring 4 is installed to limit the movement of the crosshead pin 5; pressing a second flat key 19 into one end of a worm wheel shaft 11, pressing an eccentric wheel 21, then installing a second adjusting pad 18 and pressing a second bearing 20, pressing a first flat key 10 into the other end of the worm wheel shaft 11, pressing a worm wheel 13, then installing a first adjusting pad 12 and pressing the first bearing 9, ensuring the center heights of the worm wheel 13 and the worm 30 to be consistent by adjusting the thickness of the first adjusting pad 12, and adjusting the axial pretightening force and the clearance between the second bearing 20 and the first bearing 9 by adjusting the thickness of the second adjusting pad 18; the worm gear shaft 11 assembly provided with the worm gear 13, the eccentric wheel 21 and the like is arranged in the power box 25 according to the figure 1 until the first bearing 9 is arranged in place; the connecting rod 6 assembly provided with the crosshead 2 and other parts is arranged on the eccentric wheel 21 according to the figure 2, and the pump bracket 1 is arranged at the front end of the power box 25 and is fixed by a fifth screw 32, so that the motion direction of the crosshead 2 is limited, namely the crosshead 2 can only do linear reciprocating motion in an inner hole of the pump bracket 1; the worm 30 assembly is installed in the power box 25 according to fig. 2, and then is installed in the motor bracket 14 and is fixed by the third screw 17; the upper bearing seat 22 is arranged in a power box 25 according to the figure 1 and is fixed by a fourth screw 23; the motor 15 is arranged on the motor bracket 14 according to the figure 2 and is fixed by the second screw 16, the output shaft of the motor shown in the figure 2 is directly inserted into the inner hole of the worm 30 and is inserted into the third flat key 26 to realize connection, the transmission efficiency is improved, and meanwhile, the motor 15 is arranged on the motor bracket 14 at the rear end of the power box 25, so that the width direction of the metering pump is minimum, and the requirement of the existing installation space of the nuclear power service metering pump is met.
After the motor 15 is electrified, the worm 30 is driven to rotate at high speed, the speed is reduced through the worm wheel 13, the rotating direction is changed (90 degrees staggered movement), the rotating movement of the worm wheel 13 drives the eccentric wheel 21 to rotate through the worm wheel shaft 11, the rotation of the eccentric wheel 21 is converted into the reciprocating movement of the crosshead 2 through the connecting rod 6, and a power source is provided for the operation of the metering pump.
Claims (10)
1. The utility model provides a novel special measuring pump power end device of nuclear power, includes hydraulic end, headstock and motor, its characterized in that hydraulic end and motor are located the front end and the rear end of headstock respectively, and hydraulic end and motor are the opposition setting, and hydraulic end, headstock and motor setting are on a straight line.
2. The novel power end device of a metering pump special for nuclear power as claimed in claim 1, wherein the motor is connected with the power box through a motor bracket, and the power end is connected with the power box through a screw.
3. The power end device of the novel metering pump special for nuclear power as claimed in claim 1, wherein a lower bearing seat is arranged below the power box, an upper bearing seat is arranged above the power box, a first bearing is arranged in the lower bearing seat, a second bearing is arranged in the upper bearing seat, a worm wheel shaft is connected between the first bearing and the second shaft in a matching manner, a worm wheel and an eccentric wheel are arranged on the worm wheel shaft in a matching manner, the worm wheel is meshed with a worm arranged on one side and connected with the worm, and a connecting rod is arranged outside the eccentric wheel in a matching manner; one end of the worm is installed on the power box in a matched mode through a fourth bearing, and the other end of the worm is installed on the motor bracket through a third bearing.
4. The novel power end device of the metering pump special for nuclear power as claimed in claim 3, wherein the output shaft of the motor is connected with the worm in a fit manner through a third flat key.
5. The novel power end device of a metering pump special for nuclear power as claimed in claim 3, wherein a crosshead is arranged in the power end and is connected with the connecting rod in a rotating fit manner through a crosshead pin.
6. The power end device of the novel metering pump special for nuclear power as claimed in claim 3, wherein a first adjusting pad is arranged between the worm gear shaft and the first bearing, and a second adjusting pad is arranged between the worm gear shaft and the second bearing.
7. The power end device of the novel metering pump special for nuclear power as claimed in claim 3, wherein the worm wheel is connected with the worm wheel shaft through a first flat key in a matching manner, and the eccentric wheel is connected with the worm wheel shaft through a second flat key in a matching manner.
8. The novel power end device of the metering pump special for nuclear power as claimed in claim 3, wherein a second copper bush is arranged between the connecting rod and the eccentric wheel.
9. The novel power end device of a metering pump special for nuclear power as claimed in claim 3, wherein check rings are respectively arranged on both sides of the crosshead pin, and a first copper bush is arranged between the crosshead pin and the connecting rod.
10. The novel power end device of a metering pump special for nuclear power as claimed in claim 4, wherein a first skeleton oil seal and a second skeleton oil seal are arranged between the worm and the motor bracket in a matching manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121835661.8U CN215672584U (en) | 2021-08-07 | 2021-08-07 | Novel metering pump power end device special for nuclear power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121835661.8U CN215672584U (en) | 2021-08-07 | 2021-08-07 | Novel metering pump power end device special for nuclear power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672584U true CN215672584U (en) | 2022-01-28 |
Family
ID=79983960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121835661.8U Active CN215672584U (en) | 2021-08-07 | 2021-08-07 | Novel metering pump power end device special for nuclear power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215672584U (en) |
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2021
- 2021-08-07 CN CN202121835661.8U patent/CN215672584U/en active Active
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