CN212030904U - Water pressure simulation device for reliability test of sea valve - Google Patents
Water pressure simulation device for reliability test of sea valve Download PDFInfo
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- CN212030904U CN212030904U CN202020604532.7U CN202020604532U CN212030904U CN 212030904 U CN212030904 U CN 212030904U CN 202020604532 U CN202020604532 U CN 202020604532U CN 212030904 U CN212030904 U CN 212030904U
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- hydraulic cylinder
- reliability test
- main hydraulic
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Abstract
The utility model provides a logical sea valve reliability test water pressure analogue means, it has adopted and has acted as go-between and take reset function rotary sensor matched with mode feedback logical sea valve opening position to pass positional information to control system, control system realizes hydraulic oil pressure variation in the main hydraulic cylinder through the output pressure of adjustment hydraulic pressure variable pump and the intraductal hydraulic oil flow of oil entering return. The piston rod driven by the main hydraulic cylinder is connected with the valve head through the connector, the top of the connector is provided with a curved surface matched with the shape of the valve head and is tightly attached to the top of the valve head, and the main hydraulic cylinder outputs force acting on the valve head corresponding to the real valve opening position in real time according to position information to realize simulated pressurization. An accumulator is arranged between the hydraulic variable pump and the valve main hydraulic cylinder and used for buffering pressure and preventing the pressure from changing too fast. The invention can realize the water pressure loading of the valve rod on the premise of not constructing a water pool and a water flow circulating system, and can greatly save the construction cost of the reliability test system of the sea valve.
Description
Technical Field
The patent of the utility model relates to a logical sea valve reliability test equipment field, in particular to logical sea valve reliability test water pressure analogue means.
Background
At present, in a reliability test of a high-pressure large-caliber sea valve, because the pressure and the caliber are large, the maximum pressure difference and the maximum flow are required to be met in the test, a large water tank is required to be built, special pressurizing equipment is customized, the manufacturing cost is high, the cost of water and electricity consumed by the equipment per hour is not small, the period time of the reliability test of the sea valve is generally several months to several years, and the construction of water pressure loading equipment is difficult to realize in the reliability test of medium and small sea valves.
Disclosure of Invention
The utility model provides a logical sea valve reliability test water pressure analogue means, it has adopted flexible line and has taken reset function rotary sensor matched with mode feedback logical sea valve opening position to pass to control system with it, control system controls the pressure of hydraulic oil in the main hydraulic cylinder through the output pressure of adjustment hydraulic pressure variable pump and the intraductal hydraulic oil flow volume of advancing return oil. The main hydraulic cylinder drives the piston rod to be connected with the valve head through the connector, the top of the connector is provided with a curved surface adaptive to the shape of the valve head and clings to the valve head, and the main hydraulic cylinder outputs force acting on the valve head corresponding to the real valve opening position in real time according to the position information to realize simulated pressurization. In order to prevent sudden fluctuation when hydraulic oil with different pressures is supplied to the master cylinder, an accumulator is arranged between the hydraulic variable pump and the master cylinder.
The utility model provides a technical scheme that technical problem adopted does: the sea valve reliability test water pressure simulator adopts a pressure plate to press the bottom of a test sea valve at a position corresponding to a box cover, the box cover and a base are installed through bolts, the box cover and the base can adopt cylindrical, cuboid or regular polygonal structures, a main hydraulic cylinder is fixed on the base, and a piston rod of the main hydraulic cylinder is installed in a centering way through a connector and a valve rod; the main hydraulic cylinder is connected with a pressure accumulator fixed on the base in a single oil pipe mode, the pressure accumulator is connected with the output end of the hydraulic variable pump through a channel on the base, and an oil inlet pipe and an oil return pipe of the hydraulic variable pump are directly communicated with an oil tank; the hydraulic pump variable pump is connected with the motor shaft coupler and respectively fixed on the oil tank; the control system is arranged on a pump body of the hydraulic variable pump and is connected with a rotary sensor with a reset function through a signal wire, the rotary sensor rotary body is connected with a cross rod through a flexible wire, and the cross rod is fixedly connected with a valve rod.
Before testing, the relationship among the signal value of the rotary sensor, the stress of the valve head and the hydraulic oil pressure of the main hydraulic cylinder is input into the control system. During the test, the sea valve is in a closed state, and the control system adjusts the oil pressure value in the main hydraulic cylinder to enable the upward force of the piston rod to be equal to the hydrostatic pressure of the valve head during actual working. When the test is started, the test system drives the valve rod to move downwards, the flexible wire is driven to move through the cross rod, the rotary sensor resetting system drives the sensor to rotate to generate a position signal, the position signal is transmitted to the control system through the signal wire, the control system changes the pressure in the pipe connected with the base by adjusting the output of the variable pump and the flow in the oil inlet and return pipes, the pressure in the pipe connected with the pressure accumulator is adjusted, the pressure in the oil pipe connected with the pressure accumulator changes, the upward force of the piston of the main hydraulic cylinder changes, and the adjustment is stopped when the upward force of the main hydraulic cylinder is the same as the actual water pressure of the valve head at the current position. The pressure accumulator prevents the pressure change in the system from sudden change, and prevents the system from being damaged by sudden change of pressure. When the sea valve is in different opening states, the loading of the water pressure of the valve head can be realized according to the adjusting process.
Drawings
FIG. 1 shows a structure diagram of a water pressure simulation device for a sea valve reliability test
Fig. 2 is an enlarged view at a in fig. 1.
Detailed Description
Specific embodiments of the present invention are set forth below and illustrated in the accompanying drawings:
in fig. 1, the bottom mounting surface of the test sea chest 9 is matched with a mounting table 12 on the box cover 4, and the pressure plate 6 is fixedly connected with the box cover 4 through bolts 5 and fixes the bottom of the test sea chest 9 on the mounting table 12. The base 1 and the case cover 4 are fixed together through bolts, the main hydraulic cylinder 3 is fixedly connected with the base 1 through the bolts 2, the piston rod 7 is connected with the valve head 10 through the connector 8, and meanwhile, the piston rod and the valve rod 11 of the test valve are installed in a centering mode. The upper part of the pressure accumulator 22 is provided with air, the lower part of the pressure accumulator is provided with hydraulic oil 23, the pressure accumulator is fixedly connected with the base 1 through a bolt 24, the pressure accumulator is connected with the main hydraulic cylinder 2 through an oil pipe 25 and is connected with a connecting hole of the base 1 through an oil pipe 21, the other end of the connecting hole of the base 1 is connected with the hydraulic variable pump 16 through an oil pipe 14, and the hydraulic variable pump 16 is connected with the oil tank 19 through an oil inlet and return. The hydraulic variable pump 16 is connected with a motor 18 through a coupling 17, and is fixedly connected with the motor 18 on the upper surface of an oil tank 19. The control system 15 mounted on the hydraulic variable displacement pump 16 is connected to a rotation sensor 30 with a reset function via a signal line 13. The rotary sensor 30 with the reset function is fixedly connected with the outer wall of the valve body of the test sea valve 9 through a support 29. The upper end of the flexible wire 28 is connected with the cross rod 26 through the connecting ring 27, the lower end is wound on the revolving body 31 of the revolving sensor 30 with the reset function, and the cross rod 26 is fixedly connected with the valve rod 11.
In the test process, the valve rod 11 and the valve head 10 move up and down to drive the cross rod 26 to move up and down, so as to drive the flexible wire 28 to be rolled up or unfolded on the revolving body 31, so that the revolving body 31 rotates to different positions to generate corresponding position signals. The flexible wire 28 may be made of a low elastic or inelastic material such as metal fibers or synthetic fibers to reduce positional errors. The position signal is transmitted to the control system 15 through a signal line, the control system 15 adjusts the hydraulic oil flow output by the variable pump 16 and flowing back to the oil tank 19 in the oil inlet-return pipe 20 according to the position signal information and the pressure value in the oil pipe 14 by comparing the previously input oil pressure and the position relation, so that the hydraulic oil pressure in the oil pipe 14 and the energy accumulator 22 is adjusted, the hydraulic oil pressure in the oil pipe 25 is adjusted, the piston rod 7 of the main hydraulic cylinder 3 is just enabled to generate upward force which is the same as the hydrodynamic force borne by the valve head 10 of the sea valve 9 during underwater work at the position, and the loading of the hydraulic pressure of the valve head of the reliability. The lower part of the connector 8 is connected with the piston rod 7 through a circular arc structure, the upper part of the connector is provided with a curved surface matched with the valve head 10, and when the valve rod slightly deviates from the center in the up-and-down moving process of the piston rod 7 and the valve head 8, the bending moment between transmission parts can be reduced through the micro-position movement of the upper connecting curved surface and the lower connecting curved surface.
The utility model discloses a sea valve reliability test water pressure analogue means, the position is opened through measuring to the device, compares actual water pressure value and position relation, and adjustment pneumatic cylinder piston power simulation actual position valve head water pressure realizes the test in-process normal water pressure loading, and to research such as valve rod and drive assembly wear among the reliability test can provide effectual loading mode, is applicable to various types of sea valve reliability test occasions.
Claims (4)
1. The utility model provides a logical sea valve reliability test water pressure analogue means which characterized by: the bottom of the test sea valve is pressed and installed at a position corresponding to the box cover by adopting a pressing plate, the box cover and the base are installed through bolts, the main hydraulic cylinder is fixed on the base, and a piston rod of the main hydraulic cylinder is installed in a centering way with the valve head through a connector; the main hydraulic cylinder is connected with a pressure accumulator fixed on the base in a single oil pipe mode, the pressure accumulator is connected with the output end of the hydraulic variable pump through a channel on the base, and an oil inlet pipe and an oil return pipe of the hydraulic variable pump are directly communicated with an oil tank; the hydraulic pump variable pump is connected with the motor shaft coupler and respectively fixed on the oil tank; the control system is arranged on a pump body of the hydraulic variable pump and is connected with a rotary sensor with a reset function through a signal wire, the rotary sensor rotary body is connected with a cross rod through a flexible wire, and the cross rod is fixedly connected with a valve rod.
2. The sea valve reliability test water pressure simulation device of claim 1, wherein: the matching structure of the box cover and the base adopts a cylindrical or cuboid or regular polygonal column form.
3. The sea valve reliability test water pressure simulation device of claim 1, wherein: the upper part of the connector is provided with a curved surface structure matched with the curved surface of the valve head, and the lower part of the connector is provided with an arc structure connected with the arc of the piston rod of the main hydraulic cylinder.
4. The sea valve reliability test water pressure simulation device of claim 1, wherein: the flexible wires are metal fiber wires or synthetic low-deformation fiber wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020604532.7U CN212030904U (en) | 2020-04-21 | 2020-04-21 | Water pressure simulation device for reliability test of sea valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020604532.7U CN212030904U (en) | 2020-04-21 | 2020-04-21 | Water pressure simulation device for reliability test of sea valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212030904U true CN212030904U (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020604532.7U Expired - Fee Related CN212030904U (en) | 2020-04-21 | 2020-04-21 | Water pressure simulation device for reliability test of sea valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212030904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532841A (en) * | 2020-04-21 | 2021-10-22 | 山东交通学院 | Water pressure simulation device for reliability test of sea valve |
-
2020
- 2020-04-21 CN CN202020604532.7U patent/CN212030904U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532841A (en) * | 2020-04-21 | 2021-10-22 | 山东交通学院 | Water pressure simulation device for reliability test of sea valve |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201127 Termination date: 20210421 |
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| CF01 | Termination of patent right due to non-payment of annual fee |