CN107097147B

CN107097147B - Digital display grinding device for sealing surface of high-temperature high-pressure steam valve

Info

Publication number: CN107097147B
Application number: CN201710289908.2A
Authority: CN
Inventors: 唐彬
Original assignee: Shanghai Electric Power Co ltd Wujing Thermal Power Plant
Current assignee: Shanghai Electric Power Co ltd Wujing Thermal Power Plant
Priority date: 2017-04-27
Filing date: 2017-04-27
Publication date: 2023-03-24
Anticipated expiration: 2037-04-27
Also published as: CN107097147A

Abstract

The invention discloses a digital display grinding device for a sealing surface of a high-temperature and high-pressure steam valve, which comprises a stepping motor, a lifter, a lifting platform, a first fixing bolt, a main shaft, a grinding disc, a turbine box, a grinding motor and the like, wherein the stepping motor is connected with the lifter, the lifting platform and a support upper plate are both connected with the lifter, the lifting platform is positioned above the support upper plate, the lifting platform is connected with the turbine box, the turbine box is connected with the grinding motor, a plurality of cameras are arranged on the support upper plate, the support upper plate is connected with the grinding disc through the main shaft, and the grinding disc is connected with a tensioning device and the like. The invention has the characteristics of portability, light weight, combinability, high grinding precision and good stability.

Description

Digital display grinding device for sealing surface of high-temperature high-pressure steam valve

Technical Field

The invention relates to a grinding device, in particular to a digital display grinding device for a sealing surface of a high-temperature and high-pressure steam valve.

Background

When the sealing surface of the high-temperature high-pressure steam valve has the defects of blowing loss, air holes, cracks and the like, the sealing surface needs to be ground firstly, then the surfacing of the wear-resistant layer is carried out, and the grinding is carried out to reach the required shape, size and precision. The existing grinding equipment can not completely ensure the grinding precision only by the experience of operators, the grinding process is unknown, the efficiency is low, and the whole working process is not controlled.

Disclosure of Invention

The invention aims to provide a digital display grinding device for a sealing surface of a high-temperature and high-pressure steam valve, which has the characteristics of portability, light weight, combinability, high grinding precision and good stability.

The invention solves the technical problems through the following technical scheme: the utility model provides a digital display grinder for high temperature high pressure steam valve sealing face, a serial communication port, it includes step motor, the riser, the lift platform, first fixing bolt, the main shaft, the abrasive disc, the turbine case, grinding motor, the support upper plate, the camera, the support hypoplastron, the valve body, the surfacing layer, tight device rises, step motor links to each other with the riser, the lift platform, the support upper plate all links to each other with the riser, the lift platform is located the top of support upper plate, the lift platform links to each other with the turbine case, the turbine case links to each other with grinding motor, a plurality of cameras are installed on the support upper plate, the support upper plate passes through the main shaft and links to each other with the abrasive disc, the abrasive disc links to each other with tight device that rises, tight device links to each other with the surfacing layer, the surfacing layer is installed on the valve body, the valve body passes through a plurality of first fixing bolt and links to each other with the support hypoplastron, the support hypoplastron passes through the main shaft and links to each other with the support upper plate.

Preferably, the tensioning device comprises a ratchet wheel, a ball, a tensioning block, a positioning ring, a grinding shaft, a tensioning device upper plate, a tensioning device lower plate, a spring, a positioning pin, a ball positioning pin and a rubber ring, wherein the plurality of ratchet wheels, the plurality of balls and the plurality of tensioning blocks are all installed on the positioning ring, the plurality of ratchet wheels and the balls are connected with the tensioning block, the ratchet wheel is located outside the ball, the positioning ring is connected with the tensioning device lower plate, the tensioning device lower plate is connected with the plurality of positioning pins, the spring is connected with the positioning pin, the positioning pin is located on one side of the rubber ring, the rubber ring is connected with the tensioning device lower plate, the tensioning device upper plate is connected with the tensioning device lower plate through the plurality of ball positioning pins, the grinding shaft sequentially penetrates through the tensioning device upper plate, and the tensioning device lower plate is connected with the positioning ring.

Preferably, the support lower plate comprises a second fixing bolt, an upper end face of the valve body and a central positioning plate, and the central positioning plate is connected with the upper end face of the valve body through a plurality of second fixing bolts.

Preferably, the grinding disc comprises a positioning plate mounting hole, a grinding disc body and a positioning plate, wherein the positioning plate mounting hole and the grinding disc mounting hole are both mounted on the grinding disc body, the positioning plate mounting hole is located on the outer ring of the grinding disc mounting hole, and the grinding disc body is connected with the positioning plate.

The positive progress effects of the invention are as follows: the invention has the characteristics of portability, light weight, combinability, high grinding precision, good stability and the like.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the tensioning device of the present invention.

Fig. 3 is a bottom view of the tensioning device of the invention.

Fig. 4 is a schematic structural view of the lower plate of the bracket of the present invention.

FIG. 5 is a top view of the abrasive disk of the present invention.

FIG. 6 is a schematic view of the structure of the polishing disk of the present invention.

Detailed Description

The following provides a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1, the digital display grinding device for the sealing surface of the high-temperature high-pressure steam valve comprises a stepping motor 1, a lifter 2, a lifting platform 3, first fixing bolts 4, a spindle 5, a grinding disc 6, a turbine box 7, a grinding motor 8, a support upper plate 9, cameras 10, a support lower plate 11, a valve body 12, a surfacing layer 13 and a tensioning device 14, wherein the stepping motor 1 is connected with the lifter 2, the lifting platform 3 and the support upper plate 9 are both connected with the lifter 2, the lifting platform 3 is positioned above the support upper plate 9, the lifting platform 3 is connected with the turbine box 7, the turbine box 7 is connected with the grinding motor 8, the cameras 10 are mounted on the support upper plate 9, the support upper plate 9 is connected with the grinding disc 6 through the spindle 5, the grinding disc 6 is connected with the tensioning device 14, the tensioning device 14 is connected with the surfacing layer 13, the surfacing layer 13 is mounted on the valve body 12, the valve body 12 is connected with the support lower plate 11 through the first fixing bolts 4, and the support 11 is connected with the support upper plate 9 through the spindle 5.

As shown in fig. 2 to 3, the tensioning device 14 includes a ratchet wheel 15, a ball 16, a tensioning block 17, a positioning ring 18, a grinding shaft 19, a tensioning device upper plate 20, a tensioning device lower plate 21, a spring 22, a positioning pin 23, a ball positioning pin 25, and a rubber ring 24, wherein the plurality of ratchet wheels 15, the plurality of balls 16, and the plurality of tensioning blocks 17 are all mounted on the positioning ring 18, the plurality of ratchet wheels 15 and the plurality of balls 16 are connected to the tensioning block 17, the ratchet wheel 15 is located outside the ball 16, the positioning ring 18 is connected to the tensioning device lower plate 21, the tensioning device lower plate 21 is connected to the plurality of positioning pins 23, the spring 22 is connected to the positioning pin 23, the positioning pin 23 is located on one side of the rubber ring 24, the rubber ring 24 is connected to the tensioning device lower plate 21, the tensioning device upper plate 20 is connected to the tensioning device 21 through the plurality of ball positioning pins 25, and the grinding shaft 19 sequentially passes through the tensioning device upper plate 20, the tensioning device lower plate 21 and the positioning ring 18, so that accuracy can be improved.

As shown in fig. 4, the bracket lower plate 11 includes a second fixing bolt 26, a valve body upper end surface 27, and a center positioning plate 28, and the center positioning plate 28 is connected to the valve body upper end surface 27 through a plurality of second fixing bolts 26, so that stability can be improved.

As shown in fig. 5 to 6, the grinding disc 6 includes a positioning plate mounting hole 29, a grinding disc mounting hole 30, a grinding disc body 31 and a positioning plate 32, the positioning plate mounting hole 29 and the grinding disc mounting hole 30 are both mounted on the grinding disc body 31, the positioning plate mounting hole 29 is located at the outer ring of the grinding disc mounting hole 30, and the grinding disc body 31 is connected with the positioning plate 32, so that the grinding residues can be removed and removed.

The power of the turbine box 7 and the power of the grinding motor 8 are both more than three kilowatts, so that the load requirement when one grinding sealing surface is made of hard alloy with high hardness (HRC (Rockwell hardness) approximately equal to 40 degrees) is ensured.

The power of the stepper motor 1 and the stroke of the lifter 2 are selected according to the structure, weight and position and depth of the sealing surface of the present invention, so as to ensure the effectiveness and accuracy of the stroke (within 1600 mm).

The working principle of the invention is as follows: the stepping motor is used for controlling the movement of the lifter, so that the accuracy and the grinding precision can be improved; the lifter plays a role of lifting, so that the operation is convenient; the lifting platform is used for mounting the turbine box, so that the safety can be improved; the fixing bolt is used for fixing, so that the stability can be improved; the main shaft is used for moving, the grinding disc plays a role in polishing and improves grinding precision, the grinding motor is used for providing power, the upper support plate and the lower support plate play a role in supporting, the camera plays a monitoring role, the valve body plays a control role, the surfacing layer plays a buffering role, and the tensioning device plays a conveying role, so that the accuracy can be improved, and the resistance can be reduced; the ratchet wheel is used for preventing reverse rotation, the balls roll, the tensioning block plays a locking role, the positioning ring, the positioning pin and the ball positioning pin are used for positioning, the grinding shaft is used for rotating, the tensioning device upper plate and the tensioning device lower plate play a supporting role, the spring is used for supporting elasticity, and the rubber ring plays a sealing effect. Fixing bolt plays the fixed action, and the valve body up end plays supporting role, and central locating plate is used for the location, and locating plate mounting hole, locating plate all are used for the location, and the abrasive disc mounting hole is used for easy to assemble, realizes portable, lightweight, the purpose of unitization. The grinding disc body plays a polishing role, and in conclusion, the grinding disc has the characteristics of portability, light weight, combinability, high grinding precision, good stability and the like.

The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A digital display grinding device for a sealing surface of a high-temperature and high-pressure steam valve is characterized by comprising a stepping motor, a lifter, a lifting platform, first fixing bolts, a spindle, a grinding disc, a turbine box, a grinding motor, a support upper plate, cameras, a support lower plate, a valve body, a surfacing layer and a tensioning device, wherein the stepping motor is connected with the lifter;

the tensioning device comprises ratchet wheels, balls, a tensioning block, a positioning ring, a grinding shaft, a tensioning device upper plate, a tensioning device lower plate, a spring, a positioning pin, a ball positioning pin and a rubber ring, wherein the plurality of ratchet wheels, the plurality of balls and the plurality of tensioning blocks are all arranged on the positioning ring;

a through hole is formed in the middle of the ball, the ball positioning pin penetrates through the through hole, and a rubber ring is arranged on the outer side of the tensioning block;

the ratchet wheel is in the department is provided with the spout along circumference outside the holding ring, the locating pin slides and sets up in the spout.

2. The digital display grinding device for the sealing surface of the high-temperature high-pressure steam valve as claimed in claim 1, wherein the lower support plate comprises second fixing bolts, an upper end surface of the valve body and a central positioning plate, and the central positioning plate is connected with the upper end surface of the valve body through the second fixing bolts.

3. The digital display grinding device for the sealing surface of the high-temperature and high-pressure steam valve as claimed in claim 2, wherein the grinding disc comprises a positioning plate mounting hole, a grinding disc body and a positioning plate, the positioning plate mounting hole and the grinding disc mounting hole are both mounted on the grinding disc body, the positioning plate mounting hole is located at the outer ring of the grinding disc mounting hole, and the grinding disc body is connected with the positioning plate.