High-pressure mechanical sealing surface damage repairing device and using method thereof

Abstract

The high-pressure mechanical sealing surface damage repairing device comprises a machine base, a gear motor is arranged on the upper portion of the machine base, a transmission shaft of the gear motor penetrates through the machine base, the lower portion of the transmission shaft is connected with an automatic feeding tool table, and a turning tool is arranged on the lower portion of the automatic feeding tool table; fastening bolts are further arranged on the lower portion of the machine base, when the repairing device is installed, the machine base is fixedly installed on the overflowing part needing to be repaired, it is ensured that fixation is compact, and the using method comprises the following steps that S1, a repairing scheme is determined; s2, data of the repairing scheme are input into an automatic control application single-chip microcomputer; s3, manual coarse repairing is carried out; s4, the high-pressure mechanical sealing surface damage repairing device is fixed to the overflowing part needing to be repaired, and leveling is conducted; s5, the automatic control application single-chip microcomputer is used for controlling the feeding cutter table to conduct fine repairing; and S6, the repairing device is disassembled, and repairing is completed.

Description

Technical Field

[0001] The invention relates to the field of sealing surface repair, and in particular to a high-pressure mechanical sealing surface damage repair device and a use method thereof. Background Art

[0002] The realization of pipeline transportation technology is inseparable from the guarantee of equipment. When the fatigue of the equipment accumulates to a certain extent, especially in the part where the iron ore concentrate slurry passes (hereinafter referred to as the flow-through parts), there is corrosion of the slurry and stress changes of the pressure difference, which will cause serious damage to the equipment. The most typical one is the diaphragm pump, which is the core equipment of pipeline transportation. It is mainly used to pressurize the slurry to meet the pressure requirements of its pipeline transportation (for example, 20MPa). The flow-through parts are more likely to leak when they are running in a working environment with a large pressure difference. The main reason for its damage is the leakage of high-pressure slurry caused by corrosion damage to the sealing surface of the flow-through parts due to long-term operation. The high-pressure and high-concentration iron ore washes the flow-through parts at high speed, causing damage to the flow-through parts. If the damaged flow-through parts sealing surface can be repaired on-site, the damaged equipment can be repaired in the shortest time, and it can be put into production as soon as possible to improve production efficiency. Traditionally, for the damage of the flow-through parts sealing surface, it is often necessary to shut down the machine for disassembly and transportation to a professional maintenance site for repair or replacement. This process is time-consuming, and the transportation and maintenance costs are high due to the large size and heavy weight of the equipment. In addition, frequent downtime for maintenance will seriously affect production progress and reduce overall production efficiency.

[0003] Therefore, there is an urgent need in the market for a device that can be installed at any time at the location to be repaired and can quickly and effectively repair the damage to the high-pressure mechanical sealing surface and a method of using the device. The device should be portable, easy to operate, and have the ability to quickly adapt to and complete the repair work under different working conditions, thereby minimizing downtime, ensuring the continuous and stable operation of the production line, and improving overall production efficiency and economic benefits. The present invention is proposed based on the actual needs of the above-mentioned background technology, and aims to provide a high-pressure mechanical sealing surface damage repair device and a method of using the device. The device can be directly installed at the location of the sealing surface to be repaired, and can achieve rapid on-site repair without disassembling the equipment, greatly improving maintenance efficiency and production continuity, and reducing maintenance costs and production losses. Summary of the invention

[0004] The purpose of the present invention is to provide a high-pressure mechanical seal surface damage repair device and a method of using the same in response to the above-mentioned problems, which can repair the corrosion-damaged seal surface in the slurry pipeline system, so as to put the on-site equipment into use and resume production as soon as possible, thereby improving production efficiency.

[0005] The technical solution of the present invention is as follows:

[0006] The present invention discloses a high-pressure mechanical seal surface damage repair device, comprising a machine base, a reduction motor is arranged on the upper part of the machine base, a transmission shaft of the reduction motor passes through the machine base, an automatic feed tool table is connected to the lower part of the transmission shaft, and a turning tool is arranged at the lower part of the automatic feed tool table; fastening bolts are also arranged at the lower part of the machine base, and when installing the repair device, the machine base is installed and fixed on the flow-through part to be repaired to ensure compact fixation.

[0007] Furthermore, the machine base is fixed to the upper part of the valve box of the flow-through component to be repaired by fastening bolts.

[0008] Furthermore, the reduction motor is installed on the machine base through the motor base. The speed of the reduction motor is less than 150n / min, and the speed range should be 0-150n / min. If the speed is too high, the vibration of the device will increase, affecting the accuracy and safety of the repair work.

[0009] Furthermore, a bearing is arranged inside the motor base, and the transmission shaft passes through the base from inside the bearing.

[0010] Furthermore, the transmission shaft is retractable to ensure that the automatic feeding tool table can be displaced in a vertical position.

[0011] Furthermore, it also includes an automatic control application single chip microcomputer, which is used to input the repair plan and convert it into instructions and output it to the automatic control tool table to repair the part to be repaired.

[0012] Furthermore, the turning tool includes a turning tool, a chamfering tool, and an end face tool, which are selected according to needs. The turning tool adopts a cemented carbide tool to ensure that the hardness and thermal hardness of the turning tool can meet the working requirements.

[0013] A method for using a high-pressure mechanical seal surface damage repair device, using the above-mentioned high-pressure mechanical seal surface damage repair device, comprising the following steps:

[0014] S1: Measure and map the sealing surface to be repaired, make a dimension drawing, and determine the repair plan. First, determine the original size of the sealing surface, conduct on-site measurement and mapping of the worn flow-through parts, and make computer drawings; measure and map the size of the corresponding sealing surface for installation, and make computer drawings; obtain initial data, study and analyze to determine the corresponding industrial simulation, and determine the processing size of the model surface;

[0015] S2: input the data of the repair plan into the automatic control application microcontroller;

[0016] S3: Manually repair the damaged sealing surface. Generally, welding repair method, laser deposition, electroplating deposition and other methods are used to repair the sealing surface. Considering the cost and construction difficulty, welding repair method is still the main method at the production site;

[0017] S4: Fix the high-pressure mechanical seal surface damage repair device on the flow-through part to be repaired by fastening bolts, and level it so that the automatic feed table and the sealing surface are on the same level;

[0018] S5: Start the reduction motor, use the automatic control application microcontroller to control the feed tool table to slowly feed downward, start fine repair according to the repair plan, and stop and push out the cutting edge after the surveying and mapping size requirements are met;

[0019] S6: Disassemble the high-pressure mechanical seal surface damage repair device and the repair is completed.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] 1. The present invention provides a high-pressure mechanical seal surface damage repair device and a method of using the same, which can achieve rapid on-site repair without disassembling the equipment, greatly improving the maintenance efficiency and production continuity, and reducing maintenance costs and production losses.

[0022] 2. The present invention can accurately control the repair work by automatically controlling the single chip microcomputer, effectively improving the accuracy of the repair work, reducing the subsequent failure frequency, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0024] Figure 1 The present invention is a schematic diagram of the working state of a high-pressure mechanical seal surface damage repair device and a method of using the same.

[0025] Figure numerals: 1-machine base, 2-reduction motor, 21-transmission shaft, 22-bearing, 3-automatic feed tool table, 4-turning tool, 5-valve box of the flow-through part to be repaired, 6-motor base. DETAILED DESCRIPTION

[0026] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0027] Any feature disclosed in this specification (including any additional claims and abstract), unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0028] The present invention discloses a high-pressure mechanical seal surface damage repair device, comprising a machine base 1, a reduction motor 2 is arranged on the upper part of the machine base 1, a transmission shaft 21 of the reduction motor 2 passes through the machine base 1, an automatic feed tool table 3 is connected to the lower part of the transmission shaft 21, and a turning tool 4 is arranged at the lower part of the automatic feed tool table 3; fastening bolts are also arranged at the lower part of the machine base, and when installing the repair device, the machine base is installed and fixed on the flow-through part to be repaired to ensure compact fixation.

[0029] S1: Measure and map the sealing surface to be repaired, make a dimension drawing, and determine the repair plan. First, determine the original size of the sealing surface, conduct on-site measurement and mapping of the worn flow-through parts, and make computer drawings; measure and map the size of the corresponding sealing surface for installation, and make computer drawings; obtain initial data, study and analyze to determine the corresponding industrial simulation, and determine the processing size of the model surface;

[0030] S2: input the data of the repair plan into the automatic control application microcontroller;

[0031] S3: Manually repair the damaged sealing surface. Generally, welding repair method, laser deposition, electroplating deposition and other methods are used to repair the sealing surface. Considering the cost and construction difficulty, welding repair method is still the main method at the production site;

[0032] S4: Fix the high-pressure mechanical seal surface damage repair device on the flow-through part to be repaired by fastening bolts, and level it so that the automatic feed cutter table 3 and the sealing surface are on the same horizontal plane;

[0033] S5: Start the reduction motor 2, use the automatic control application microcontroller to control the automatic feed tool table 3 to slowly feed downward, start fine repair according to the repair plan, and stop and push out the cutting edge after reaching the surveying and mapping size requirements;

[0034] S6: Disassemble the high-pressure mechanical seal surface damage repair device and the repair is completed.

[0035] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0036] like Figure 1As shown in the figure, according to the material characteristics of the flow-through parts and the abrasion angle, abrasion range and depth, the corresponding repair method is selected to ensure that the selected material has good wear resistance and corrosion resistance. According to the material of the flow-through parts, the appropriate repair method is selected. The currently known repair methods include: welding repair method, laser deposition, electroplating deposition and other methods. Considering the cost and construction difficulty, welding repair method is still the main method in the production site. However, the welding method needs to determine the correct welding process according to different materials. The correct welding process can achieve twice the result with half the effort. This requires studying the material properties of the parent material, determining the physical and chemical properties of the material, and formulating a suitable welding process to achieve welding filling and repair of the abrasion points. The repair method of the abrasion point is finally determined. For example, when repairing the abrasion of the knife plate valve sealing surface, tungsten inert gas arc welding can be used to make the weld shape beautiful and the heat affected zone small, ensuring that the repaired knife plate valve has good wear resistance and sealing performance; for example, when repairing the abrasion of the ball valve sealing surface, plug welding can meet the high precision and centering requirements of the ball valve sealing surface repair to ensure the sealing performance after welding.

[0037] After the repair material solidifies, the repaired part needs to be trimmed to ensure that the installation size of the sealing surface is qualified and can be installed in the corresponding position. The repaired flow-through parts are quality inspected to remove surface defects, and the appropriate processing methods and size restoration are determined according to the corresponding material properties. In this process, the original size of the sealing surface is first determined, and the abraded flow-through parts are surveyed and mapped on site, and computer graphics are produced; the size of the corresponding sealing surface is surveyed and installed, and computer graphics are produced; the initial data is obtained, and the corresponding industrial simulation is determined through research and analysis, and the processing size of the model surface is determined.

[0038] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A high-pressure mechanical seal surface damage repair device, comprising a machine base (1), characterized in that: A reduction motor (2) is arranged on the upper part of the machine base (1); a transmission shaft (21) of the reduction motor (2) passes through the machine base (1); an automatic feed tool platform (3) is connected to the lower part of the transmission shaft (21); a turning tool (4) is arranged on the lower part of the automatic feed tool platform (3); and a fastening bolt is also arranged on the lower part of the machine base.

2. A high-pressure mechanical seal surface damage repair device according to claim 1, characterized in that: The machine base (1) is fixed to the upper part of the valve box (5) of the flow-through component to be repaired by means of fastening bolts.

3. A high-pressure mechanical seal surface damage repair device according to claim 1, characterized in that: The reduction motor (2) is mounted on the machine base (1) via a motor base (6), and the rotation speed of the reduction motor (2) is less than 150 n / min.

4. A high-pressure mechanical seal surface damage repair device according to claim 3, characterized in that: A bearing (22) is arranged inside the motor base (6), and the transmission shaft (21) passes through the base (1) from the inside of the bearing (22).

5. A high-pressure mechanical seal surface damage repair device according to claim 1, characterized in that: The transmission shaft (21) is retractable.

6. A high-pressure mechanical seal surface damage repair device according to claim 1, characterized in that: It also includes microcontrollers for automatic control applications.

7. A high-pressure mechanical seal surface damage repair device according to claim 1, characterized in that: The turning tool (4) comprises a turning tool, a chamfering tool and an end face tool, and the turning tool (4) adopts a hard alloy tool.

8. A method for using a high-pressure mechanical seal surface damage repair device, using a high-pressure mechanical seal surface damage repair device as described in claims 1-6, characterized in that: The following steps are involved: S1: Measure and map the sealing surface to be repaired, make a dimension drawing, and determine the repair plan; S2: input the data of the repair plan into the automatic control application microcontroller; S3: Manually repair the damaged sealing surface; S4: Fix the high-pressure mechanical seal surface damage repair device on the flow-through part that needs to be repaired, and level it so that the automatic feed table and the sealing surface are on the same level; S5: Start the reduction motor, use the automatic control application microcontroller to control the feed tool table to slowly feed the tool downward, start fine repair, and stop and push out the tool edge after reaching the surveying and mapping size requirements; S6: Disassemble the high-pressure mechanical seal surface damage repair device and the repair is completed.

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