CN114593906B - A reliability test equipment for ship shaft end seal device - Google Patents

Abstract

The invention discloses a reliability test equipment for a shaft end face sealing device for a ship. The technical scheme thereof includes a test module, a cooling water circulation module, an electrical control module and a hydraulic system. The test module includes a test platform, an adapter seat is movably connected to the test platform, a motor fixing seat is arranged on the adapter seat, a variable frequency motor is installed on the motor fixing seat, a reducer fixing support is arranged on the adapter seat, a reducer is installed on the reducer fixing support, a bearing seat front support and a bearing seat rear support are arranged on the adapter seat, a bearing seat 1 is installed on the bearing seat front support, a bearing seat 2 is installed on the bearing seat rear support, a transmission shaft is rotatably connected between the bearing seat 1 and the bearing seat 2, a simulated seawater box is fixed to the test platform, a simulated shaft is rotatably connected in the simulated seawater box, a stern shaft sealing sleeve and an Ω elastomer are installed at the end of the simulated shaft. The advantage of the invention is that high-precision simulation of a real ship shaft system can be achieved.

Description

A reliability test equipment for ship shaft end seal device

Technical Field

The invention relates to the field of ship parts detection equipment, and in particular to reliability test equipment for a shaft end face sealing device for a ship.

Background Art

Since ancient times, ships have been a kind of man-made transportation tool that mainly runs in water. With the development of economy and industry, and with the wide application of steel, aluminum, fiberglass, acrylic and various composite materials, the size of ships has become larger and larger. From the changes in the share of China's shipbuilding industry in the world shipbuilding market in the past decade, it can be seen that the proportion of China's shipbuilding industry in the global market is increasing significantly, and China has become one of the important shipbuilding centers in the world. Since the shaft end face sealing device for ships (especially the shaft diameter of > φ400mm) has uncertain factors that general products do not have during the reliability performance test, there is currently no suitable reliability test equipment for the shaft end face sealing device with large shaft diameter in China. Therefore, our company has conducted a comprehensive analysis of the structure of the shaft end face sealing device and designed a test equipment dedicated to reliability testing.

Summary of the invention

In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a reliability test equipment for the end face sealing device of a ship's shaft system, which has the advantage of solving the problem of reliability performance testing of the end face sealing device of a large-diameter shaft system in China and realizing high-precision simulation of the actual ship's shaft system through a simulated shaft.

The above technical objectives of the present invention are achieved through the following technical solutions:

A reliability test equipment for a shaft end face sealing device for a ship, comprising a test module, a cooling water circulation module, an electrical control module and a hydraulic system, wherein the test module comprises a test platform, wherein an adapter is movably connected to the test platform, wherein a motor fixing seat is arranged on the adapter, wherein a variable frequency motor is installed on the motor fixing seat, wherein a reducer fixing support is arranged on the adapter, wherein a reducer is installed on the reducer fixing support, wherein the reducer is connected to the rotating shaft of the variable frequency motor, wherein a bearing seat front support and a bearing seat rear support are arranged on the adapter, wherein a bearing seat 1 is installed on the front support of the bearing seat, wherein a bearing seat 2 is installed on the rear support of the bearing seat, wherein a transmission shaft is rotatably connected between the bearing seat 1 and the bearing seat 2, wherein an end of the transmission shaft is connected to the reducer, wherein a simulated seawater tank is fixed on the test platform, wherein a simulated shaft is rotatably connected in the simulated seawater tank, wherein one end of the simulated shaft is connected to the transmission shaft, wherein the other end of the simulated shaft extends out of the simulated seawater tank, and wherein a stern shaft sealing sleeve and an Ω elastomer are installed at the end of the simulated shaft.

Furthermore, an axial displacement hydraulic cylinder is installed on the test platform, and the axial displacement hydraulic cylinder is connected to the side of the adapter seat. A linear slide rail group is arranged on the test platform, and the adapter seat is slidably connected to the linear slide rail group.

Furthermore, an elastic coupling is installed on the rotating shaft of the variable frequency motor, and the rotating shaft of the variable frequency motor is connected to the reducer through the elastic coupling.

Furthermore, the shaft of the reducer is connected to a torque and speed sensor, a diaphragm coupling 1 is provided between the input end of the torque and speed sensor and the shaft of the reducer, and a diaphragm coupling 2 is provided at the output end of the torque and speed sensor, which is connected to the rotating shaft through the diaphragm coupling 2.

Furthermore, the bearing seat 1 is provided with a plane thrust ball bearing and a tapered roller bearing, and the transmission shaft passes through the inner holes of the plane thrust ball bearing and the tapered roller bearing; the bearing seat 2 is provided with a cylindrical roller bearing, and the transmission shaft passes through the inner hole of the cylindrical roller bearing.

Furthermore, the transmission shaft is inserted into a simulated seawater tank, and a cover plate for sealing is provided in the simulated seawater tank at the insertion position of the transmission shaft, and a water seal is provided on the cover plate.

Furthermore, a movable flange is provided on the side of the simulated seawater box, and the movable flange is located between the simulated seawater box and the stern shaft sealing sleeve.

Furthermore, a radial displacement cylinder is installed on the base of the simulated seawater tank.

Furthermore, the cooling water circulation module includes a cooling water tank, an inlet pipe and an outlet pipe are arranged between the cooling water tank and the seawater simulation tank, a main pump and a cooler are arranged in the inlet pipe, the main pump is connected to the output end of the cooling water tank, the cooler is connected to the output end of the main pump, and the output end of the cooler is connected to the seawater simulation tank. A circulation pipe is also arranged on the cooling water tank, and a circulation pump is arranged in the circulation pipe.

Furthermore, a stirring motor and a heater are provided in the cooling water tank.

In summary, the present invention has the following beneficial effects:

1. The shaft rotation of the real ship is simulated by adjusting the speed of the variable frequency motor; the simulation shaft is used to simulate the shaft system of the real ship; the cooling circulating water system is started, and the cooling water circulates in the seawater simulation box, thereby measuring the water pressure of the real ship; the displacement parameters of the axial displacement hydraulic cylinder and the radial displacement hydraulic cylinder are controlled by the hydraulic system. After all states are adjusted, the reliability performance test of the shaft system end face sealing device can be carried out. During centering, the axial displacement hydraulic cylinder and the radial displacement hydraulic cylinder can be adjusted left and right and front and back to ensure that the purpose of the reliability test is achieved safely and efficiently.

2. The device has a compact and reasonable structure; the manufacturing process is simple, the threaded connection is reliable, the key parts structure adopts the overall welding forming technology, the welding process is mature and reliable, and it is easy to manufacture, operate and use.

3. The test equipment adopts a modular design, the equipment parts are interchangeable, and the equipment assembly space and maintenance space are convenient for equipment maintenance and various construction operations, thereby saving the staff's related working time.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a test module.

FIG. 2 is a schematic diagram of the structure of the cooling water circulation system.

In the figure, 1, test platform; 11, axial displacement hydraulic cylinder; 12, adapter; 13, linear guide rail group; 2, motor fixed seat; 21, frequency conversion motor; 22, elastic coupling; 3, reducer fixed support; 31, reducer; 32, diaphragm coupling 1; 33, torque speed sensor; 34, diaphragm coupling 2; 4, bearing seat front support; 41, bearing seat 1; 42, transmission shaft; 43, plane thrust ball bearing; 44, tapered roller bearing; 5, bearing seat rear support; 51, bearing Seat 2; 52, cylindrical roller bearing; 6, simulated seawater tank; 61, cover plate; 62, water seal; 63, stern shaft sealing sleeve; 64, Ω elastomer; 65, movable flange; 66, radial displacement cylinder; 7, cooling water tank; 71, stirring motor; 72, heater; 73, liquid level indicator; 74, float liquid level switch; 75, main pump; 76, cooler; 77, circulation pipeline; 771, circulation pump; 78, water inlet pipeline; 79, water outlet pipeline; 8, electrical control box; 9, hydraulic system.

DETAILED DESCRIPTION

In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

Example:

A reliability test equipment for a ship shaft end face sealing device, as shown in FIG. 1 and FIG. 2 , includes a test module, a cooling water circulation module, an electrical control module and a hydraulic system 9 .

Further, as shown in FIG1 , the test module includes a test platform 1, on which an adapter 12 is movably connected, and the adapter 12 is used to carry other components. An axial displacement hydraulic cylinder 11 is installed on the test platform 1, and the axial displacement hydraulic cylinder 11 is located on one side of the test platform 1. The axial displacement hydraulic cylinder 11 is connected to the hydraulic system 9 through a pipeline so that the hydraulic oil required for the operation of the axial displacement hydraulic cylinder 11 can be supplied. A linear slide rail group 13 is provided on the test platform 1, and the adapter 12 is slidably connected to the linear slide rail group 13. During the test, the axial displacement hydraulic cylinder 11 is started, and then the adapter 12 of the test platform 1 is driven to reciprocate along the direction of the linear slide rail group 13.

Further, as shown in Fig. 1, the adapter 12 is provided with a motor fixing seat 2, and a variable frequency motor 21 is installed on the motor fixing seat 2. An elastic coupling 22 is installed on the rotating shaft of the variable frequency motor 21, so that it is connected with other shaft components through the elastic coupling 22.

Further, as shown in FIG1 , a reducer fixing support 3 is provided on the adapter 12, and a reducer 31 is installed on the reducer fixing support 3. The input end of the reducer 31 is connected to the rotating shaft of the variable frequency motor 21 through an elastic coupling 22. A torque speed sensor 33 is installed on the reducer fixing support 3, and the torque speed sensor 33 is connected to the rotating shaft of the reducer 31. A diaphragm coupling 1 32 is provided between the input end of the torque speed sensor 33 and the rotating shaft of the reducer 31, and a diaphragm coupling 2 34 is provided at the output end of the torque speed sensor 33, so that the rotating shaft of the variable frequency motor 21 and the torque speed sensor 33 are connected together, and the two can rotate synchronously, so that the torque speed sensor 33 can realize the collection of data destined to rotate.

Furthermore, as shown in FIG1 , a front bearing support 4 and a rear bearing support 5 are provided on the adapter 12, a transmission shaft 42 is rotatably connected between the bearing seat 1 41 and the bearing seat 2 51, and an input end of the transmission shaft 42 and an output end of the torque and speed sensor 33 are connected through a diaphragm coupling 2 34 so that the two rotate synchronously.

Further, as shown in FIG1 , a plane thrust ball bearing 43 and a tapered roller bearing 44 are provided in the bearing seat 1 41, and pass through the inner holes of the plane thrust ball bearing 43 and the tapered roller bearing 44; a cylindrical roller bearing 52 is provided in the bearing 2, and the transmission shaft 42 passes through the inner hole of the cylindrical roller bearing 52. A cylindrical roller bearing 52 is provided in the bearing 2, and the transmission shaft 42 passes through the inner hole of the cylindrical roller bearing 52. During the rotation of the transmission shaft 42, the input end of the transmission shaft 42 is lubricated and rotated through the plane thrust ball bearing 43 and the tapered roller bearing 44, and the output end of the transmission shaft 42 is lubricated and rotated through the cylindrical roller bearing 52.

Further, as shown in FIG1 , a simulated seawater tank 6 is fixed on the test platform 1, and a simulated shaft is rotatably connected in the simulated seawater tank 6. One end of the transmission shaft 42 is inserted into the simulated seawater tank 6, and the simulated shaft is connected to the transmission shaft 42, and the simulated shaft rotates synchronously with the transmission shaft 42. The simulated seawater tank 6 is provided with a cover plate 61 at the insertion position of the transmission shaft 42, and a water seal 62 is provided on the cover plate 61 to increase the sealing performance of the insertion position of the transmission shaft 42.

Further, as shown in FIG1 , the other end of the simulation shaft extends out of the simulation seawater box 6, and the end of the simulation shaft is installed with a stern shaft sealing sleeve 63 and an Ω elastic body 64, and the simulation seawater box 6, the simulation shaft and the stern shaft sealing sleeve 63 are connected as a whole by screws. A movable flange 65 is provided on the side of the simulation seawater box 6, and the movable flange 65 is located between the simulation seawater box 6 and the stern shaft sealing sleeve 63, and the simulation shaft passes through the inner hole of the movable flange 65. The bottom of the radial displacement hydraulic cylinder is connected to the base of the simulation seawater box 6, and the end of the piston rod is connected to the movable flange 65.

Further, as shown in FIG. 2 , the electrical control module includes an electrical control box 8 , which is respectively connected to the variable frequency motor 21 and the power supply of the test laboratory to form a closed-loop control circuit system.

Furthermore, as shown in FIG. 2 , the cooling water circulation module includes a cooling water tank 7 , inside of which are installed a stirring motor 71 for stirring the cooling water, a heater 72 for heating the cooling water, a float level switch 74 for controlling the cooling water circulation, and a level indicator 73 .

Further, as shown in FIG2 , an outlet pipe 79 is provided between the output end of the cooling water tank 7 and the input end of the simulated seawater tank 6, and a main pump 75 and a cooler 76 are provided on the outlet pipe 79, and the outlet of the outlet pipe 79 is connected to the water inlet of the main pump 75, and the outlet of the main pump 75 is connected to the water inlet of the cooler 76, and the outlet of the cooler 76 is connected to the water inlet of the simulated seawater tank 6. When working, cooling water flows out of the cooling water tank 7, and then the cooling water is pressurized by the main pump 75, and then the cooling water is adjusted in temperature by the cooler 76, and finally the cooling water is input into the simulated seawater tank 6. An inlet pipe 78 is provided between the input end of the cooling water tank 7 and the output end of the simulated seawater tank 6, and the water used in the simulated seawater tank 6 flows back to the cooling water tank 7 through the inlet pipe 78, completing a cooling water cycle.

Furthermore, as shown in FIG. 2 , a circulation pipeline 77 is provided on the cooling water tank 7 , and a circulation pump 771 for providing power is provided in the circulation pipeline 77 .

Furthermore, as shown in FIG. 2 , the water outlet pipeline 79 , the water inlet pipeline 78 and the circulation pipeline 77 are all equipped with stop valves for opening and closing the holes.

Specific working principle:

First, place the axial displacement hydraulic cylinder 11, the variable frequency motor 21, the motor fixed support, the reducer 31, the reducer 31 fixed support, the front and rear fixed supports of the bearing seat, the radial displacement oil cylinder 66, and the simulated seawater tank 6 on the corresponding positions of the adapter 12 and the test platform 1, and perform calibration and alignment. At the beginning of the test, start the hydraulic system 9, adjust the displacement parameters of the axial displacement hydraulic cylinder 11 and the radial displacement oil cylinder 66, and after all states are adjusted, perform the reliability performance test of the stern shaft sealing sleeve 63. The variable frequency motor 21 starts to drive the transmission shaft 42 to rotate, and drives the simulated shaft to rotate through the transmission shaft 42 to simulate the shaft speed of the actual ship. During the rotation of the transmission shaft 42, the torque speed sensor 33 records the rotation data. At the same time, the cooling water circulation module starts, and the pressure of the simulated seawater tank 6 is adjusted through the main pump 75 and the circulation pump 771 to simulate the water pressure of the actual ship.

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

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

Claims (2)

1. A reliability test equipment for a shaft end face sealing device for a ship, comprising a test module, a cooling water circulation module, an electrical control module and a hydraulic system, characterized in that: the test module comprises a test platform, an adapter is movably connected to the test platform, a motor fixing seat is arranged on the adapter, a variable frequency motor is installed on the motor fixing seat, a reducer fixing support is arranged on the adapter, a reducer is installed on the reducer fixing support, the reducer is connected to the rotating shaft of the variable frequency motor, a bearing seat front support and a bearing seat rear support are arranged on the adapter, a bearing seat 1 is installed on the bearing seat front support, a bearing seat 2 is installed on the bearing seat rear support, a transmission shaft is rotatably connected between the bearing seat 1 and the bearing seat 2, and the end of the transmission shaft is connected to the reducer, a simulated seawater tank is fixed on the test platform, a simulated shaft is rotatably connected in the simulated seawater tank, one end of the simulated shaft is connected to the transmission shaft, the other end of the simulated shaft extends out of the simulated seawater tank, and a stern shaft sealing sleeve and an Ω elastomer are installed at the end of the simulated shaft; An elastic coupling is installed on the rotating shaft of the variable frequency motor, and the rotating shaft of the variable frequency motor is connected to the reducer through the elastic coupling; The shaft of the reducer is connected with a torque and speed sensor, a diaphragm coupling 1 is provided between the input end of the torque and speed sensor and the shaft of the reducer, and a diaphragm coupling 2 is provided at the output end of the torque and speed sensor, which is connected with the rotating shaft through the diaphragm coupling 2; The cooling water circulation module comprises a cooling water tank, a stirring motor for stirring cooling water, a heater for heating cooling water, a float level switch and a level indicator for controlling cooling water circulation are installed inside the cooling water tank, an outlet pipe is arranged between the output end of the cooling water tank and the input end of the simulated seawater tank, a main pump and a cooler are arranged on the outlet pipe, a water outlet of the outlet pipe is connected to a water inlet of the main pump, a water outlet of the main pump is connected to a water inlet of the cooler, and a water outlet of the cooler is connected to a water inlet of the simulated seawater tank; An axial displacement hydraulic cylinder is installed on the test platform, and the axial displacement hydraulic cylinder is connected to the side of the adapter seat. A linear slide rail group is provided on the test platform, and the adapter seat is slidably connected to the linear slide rail group. The first bearing seat is provided with a plane thrust ball bearing and a tapered roller bearing, and the transmission shaft passes through the inner holes of the plane thrust ball bearing and the tapered roller bearing; the second bearing seat is provided with a cylindrical roller bearing, and the transmission shaft passes through the inner hole of the cylindrical roller bearing; The transmission shaft is inserted into a simulated seawater tank, and a cover plate for sealing is provided at the insertion position of the transmission shaft in the simulated seawater tank, and a water seal is provided on the cover plate; A movable flange is provided on the side of the simulated seawater box, and the movable flange is located between the simulated seawater box and the stern shaft sealing sleeve; A radial displacement oil cylinder is installed on the base of the simulated seawater tank. 2. A reliability test equipment for a ship shaft end face sealing device according to claim 1, characterized in that a stirring motor and a heater are provided in the cooling water tank.