CN107605551B - Lubricating oil pressure shielding device - Google Patents
Lubricating oil pressure shielding device Download PDFInfo
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- CN107605551B CN107605551B CN201710850142.0A CN201710850142A CN107605551B CN 107605551 B CN107605551 B CN 107605551B CN 201710850142 A CN201710850142 A CN 201710850142A CN 107605551 B CN107605551 B CN 107605551B
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- slide valve
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Abstract
The invention belongs to the technical field of ship equipment, and particularly relates to a lubricating oil pressure shielding device, which comprises a shell, a sleeve nut and a reversing valve, wherein a central hole is formed in the middle of the shell, a lubricating oil inlet, an oil breaker oil inlet, a power oil inlet and an oil drain port are arranged on two sides of the shell, the lubricating oil inlet and the oil breaker oil inlet are provided with externally welded pipe joints and are provided with externally connected flat shoulder joints, gaskets and sleeve nuts, and the power oil inlet and the oil drain port are fixed on the shell through the pipe joints and the gaskets and are provided with externally connected flat shoulder joints, gaskets and sleeve nuts; the sliding valve sleeve is arranged on an inner hole of the shell, the non-directional sliding valve is arranged in the sliding valve sleeve, three convex shoulders are arranged on the non-directional sliding valve, and four damping oil ports for controlling the switching of lubricating oil and power oil are formed in the upper convex shoulder and the lower convex shoulder; an upper cover is arranged at the upper end of the shell; the lower end of the shell is provided with an oil hole which is communicated with the reversing valve and used for controlling power oil or oil discharge to enter the lower cavity of the non-directional slide valve.
Description
Technical field:
the invention belongs to the technical field of ship equipment, and particularly relates to a lubricating oil pressure shielding device.
The background technology is as follows:
the lubricating oil pressure shield is mainly used for cutting off the quick closing function of the turbine set with low lubricating oil pressure when the turbine set is braked with low lubricating oil pressure. The lubricating oil shielding device used by the current ship is formed by logically combining a plurality of standard components installed on a pipeline, and the system is scattered and complex, so that the reliability is reduced, certain hidden danger exists for the safety of a unit, and certain difficulties exist in fault diagnosis, maintenance, repair and the like. Therefore, it is necessary to design a lubricating oil pressure shield.
The invention comprises the following steps:
the invention overcomes and improves the defects of the prior art, provides an integrated and simplified lubricating oil pressure shielding device, simplifies the system, improves the reliability of the system, is convenient for the maintenance and the fault diagnosis of the system, and can be popularized and used on a large scale.
The invention adopts the technical scheme that: the utility model provides a lubricating oil pressure shield assembly, includes casing, overcoat nut and the switching-over valve that open the centre has the centre bore in the middle, and casing two sides are equipped with four hydraulic fluid ports, are lubricating oil inlet, oil breaker oil inlet, power oil inlet and oil drain port respectively, and wherein lubricating oil inlet and oil breaker oil inlet have the pipe joint of external welding to be furnished with flat shoulder joint, gasket and the overcoat nut of external connection, power oil inlet and oil drain port are fixed in the casing through coupling and gasket to be furnished with flat shoulder joint, gasket and the overcoat nut of external connection; the sliding valve sleeve is arranged on an inner hole of the shell, the non-directional sliding valve is arranged in the sliding valve sleeve, three convex shoulders are arranged on the non-directional sliding valve, and four damping oil ports for controlling the switching of lubricating oil and power oil are formed in the upper convex shoulder and the lower convex shoulder; an upper cover is arranged at the upper end of the shell; the lower end of the shell is provided with an oil hole which is communicated with the reversing valve and used for controlling power oil or oil discharge to enter the lower cavity of the non-directional slide valve.
The slide valve sleeve is limited at the upper part of the shell through a shaft shoulder.
The end face of the non-directional slide valve is provided with a cross flower groove for increasing the contact area between the initial state and oil.
The upper end of the shell is provided with a groove for installing an O-shaped ring, the upper cover compresses the O-shaped ring through a screw and an elastic washer, the oil pressure of the upper cavity of the non-directional slide valve is sealed to leak, a gap for preventing mechanical over-restriction is reserved between the upper cover and the slide valve sleeve, and meanwhile, the upper cover limits the stroke of the non-directional slide valve.
The reversing valve is arranged at the lower end of the shell through a screw, a gasket and an O-shaped ring, and the O-shaped ring seals leakage of the lower cavity of the non-directional slide valve.
Four auxiliary mounting holes for fixing the lubricating oil pressure shielding device are formed in the shell.
The reversing valve is one of an electromagnetic valve, a hydraulic reversing valve or a manual reversing valve.
The invention has the beneficial effects that: the structure design is reasonable, safe and reliable, and is easy to popularize and use on a large scale. An integrated and simplified lubricating oil pressure shielding device enables a system to be integrated and simplified, improves the reliability of the system, and is convenient for maintenance, fault diagnosis and the like of the system; when the system does not need the low protection of the oil pressure of the shielding oil breaker, the reversing valve cuts off the power oil, and discharges oil from the lower end of the non-directional slide valve, the non-directional slide valve moves to the lower limit position, and the oil is discharged to the oil breaker through the upper end of the non-directional slide valve; when the system sends out an instruction and needs to shield the low protection of the oil pressure of the breaker, the reversing valve controls the lower end of the non-directional slide valve to be communicated with power oil, the upper end of the non-directional slide valve is communicated with the oil, the non-directional slide valve moves to the upper limit position under the action of the pressure difference between the power oil and the oil, and at the moment, the power oil is communicated to the lower end of the low-pressure protection slide valve of the oil breaker, so that the oil pressure protection function of the oil breaker is realized, and the main turbine unit is ensured not to conduct quick closing.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention.
The specific embodiment is as follows:
referring to fig. 1, an oil pressure shielding device comprises a shell 1 with a central hole in the middle, a sleeve nut 8 and a reversing valve 13, wherein four oil ports are arranged on two sides of the shell 1, namely an oil inlet 2, an oil shutter oil inlet 3, a power oil inlet 5 and an oil drain 11, wherein the oil inlet 2 and the oil shutter oil inlet 3 are provided with externally welded pipe joints and are provided with externally connected flat shoulder joints 10, gaskets 9 and sleeve nuts 8, and the power oil inlet 5 and the oil drain 11 are fixed on the shell 1 through pipe joints 12 and gaskets 9 and are provided with externally connected flat shoulder joints 10, gaskets 9 and sleeve nuts 8; the sliding valve sleeve 6 is arranged on an inner hole of the shell 1 and limited at the upper part of the shell 1 through a shaft shoulder, the non-directional sliding valve 7 is arranged in the sliding valve sleeve 6, three convex shoulders are arranged on the non-directional sliding valve 7, four damping oil ports for controlling the switching of lubricating oil and power oil are arranged on the upper convex shoulder and the lower convex shoulder, and a cross flower groove for increasing the contact area between the initial state and the oil is arranged on the end face of the non-directional sliding valve 7; an upper cover 4 is arranged at the upper end of the shell 1, a groove for installing an O-shaped ring is formed at the upper end of the shell 1, the O-shaped ring is pressed by the upper cover 4 through a screw and an elastic washer, the oil pressure of an upper cavity of the non-directional slide valve 7 is sealed to be leaked, a gap for preventing mechanical over-restriction is reserved between the upper cover 4 and the slide valve sleeve 6, and meanwhile, the upper cover 4 limits the stroke of the non-directional slide valve 7; the lower end of the shell 1 is provided with an oil hole which is communicated with the reversing valve 13 and used for controlling power oil or oil discharge to enter the lower cavity of the non-directional slide valve 7; the reversing valve 13 is arranged at the lower end of the shell 1 through a screw, a gasket and an O-shaped ring, and the O-shaped ring seals the leakage of the lower cavity of the non-directional slide valve 7; four auxiliary mounting holes for fixing the lubricating oil pressure shielding device are formed in the shell 1.
The lubricating oil pressure shielding device is a two-position control slide valve, and the state of the lubricating oil pressure shielding device is controlled. When the system does not need to shield the low protection of the oil pressure of the oil breaker, the reversing valve cuts off the power oil, and discharges oil from the lower end of the non-directional slide valve 7, the non-directional slide valve 7 moves to the lower limit position, and the oil is discharged to the oil breaker through the upper end of the non-directional slide valve 7; when the system gives out an instruction and needs to shield the low protection of the oil pressure of the breaker, the reversing valve 13 controls the lower end of the non-directional slide valve 7 to be communicated with power oil, the upper end of the non-directional slide valve 7 is communicated with the oil, the non-directional slide valve 7 moves to the upper limit position under the action of the pressure difference between the power oil and the oil, and at the moment, the power oil is communicated to the lower end of the low protection slide valve of the oil breaker, so that the oil pressure protection function of the oil breaker is realized, the main turbine unit is ensured not to be rapidly closed.
Example 1
When the reversing valve 13 is selected as a two-position four-way normally open electromagnetic valve, the electromagnetic valve can be used for remote control, the electromagnetic valve in a non-energized state controls the lower end of the non-directional slide valve 7 to be communicated with power oil, the upper end of the non-directional slide valve is communicated with the slide oil, the slide valve moves to an upper limit position under the action of the pressure difference between the power oil and the slide oil, and at the moment, the power oil is communicated to the lower end of the oil shielding slide valve with low oil pressure for protecting the slide valve, so that the oil shielding slide valve has an oil pressure protecting function; the solenoid valve in the electrified state controls the lower end of the non-directional slide valve 7 to discharge oil, the non-directional slide valve 7 moves to the lower limit position, and the oil is led to the oil shield through the upper end of the non-directional slide valve 7, so that the oil pressure protection function of the oil shield is not shielded.
Example two
When the reversing valve 13 is selected as a two-position four-way normally closed electromagnetic valve, the reversing valve can be used for remote control, the electromagnetic valve in an electrified state controls the power oil to be communicated with the lower end of the non-directional slide valve 7, the slide valve moves to an upper limit position under the action of the pressure difference between the power oil and the slide oil, and at the moment, the power oil is communicated to the lower end of the oil pressure low protection slide valve of the oil shielding device, so that the oil pressure protection function of the oil shielding device is shielded; the solenoid valve in the non-energized state controls the lower end of the non-directional slide valve 7 to discharge oil, the non-directional slide valve 7 moves to the lower limit position, and the oil is discharged to the oil shield through the upper end of the non-directional slide valve 7, so that the oil pressure protection function of the oil shield is not shielded.
Example III
When the reversing valve 13 is selected as a two-position four-way normally open hydraulic reversing valve, the reversing valve can be used for remote control, the reversing valve in a cut-off state controls the lower end of the non-directional slide valve 7 to be communicated with power oil, the upper end of the non-directional slide valve is communicated with the slide oil, the slide valve moves to an upper limit position under the action of the pressure difference between the power oil and the slide oil, and at the moment, the power oil is communicated to the lower end of the slide valve with low oil pressure protection of the oil shielding device, so that the oil pressure protection function of the oil shielding device is shielded; the through-flow state reversing valve controls the lower end of the non-directional slide valve 7 to be communicated with oil discharge, the non-directional slide valve 7 moves to the lower limit position, and the oil is communicated to the oil shield through the upper end of the non-directional slide valve 7, so that the oil pressure protection function of the oil shield is not shielded.
Example IV
When the reversing valve 13 is selected as a two-position four-way normally closed hydraulic reversing valve, the reversing valve can be used for remote control, the through-flow state reversing valve controls the power oil to flow through the lower end of the non-directional slide valve 7, the slide valve moves to the upper limit position under the action of the pressure difference between the power oil and the slide oil, and at the moment, the power oil is communicated to the lower end of the oil-shielding slide valve with low oil pressure protection of the oil-shielding slide valve, so that the oil-shielding slide valve has the oil pressure protection function; the flow-cut-off reversing valve controls the lower end of the non-directional slide valve 7 to discharge oil, the non-directional slide valve 7 moves to the lower limit position, and the oil is discharged to the oil breaker through the upper end of the non-directional slide valve 7, so that the oil pressure protection function of the oil breaker is not shielded.
Example five
When the reversing valve 13 is a manual reversing valve which is normally opened in two-position four-way, the reversing valve can be used for in-situ control, the reversing valve in a non-operating state controls the power oil to flow through the lower end of the non-directional sliding valve 7, the sliding valve is communicated with the sliding oil at the upper end, and moves to an upper limit position under the action of the pressure difference between the power oil and the sliding oil, and at the moment, the power oil is communicated to the lower end of the oil-shielding sliding valve with low sliding oil pressure protection of the oil-shielding device, so that the oil-shielding device has the sliding oil pressure protection function; the electromagnetic valve in an operating state controls the lower end of the non-directional slide valve 7 to discharge oil, the non-directional slide valve 7 moves to a lower limit position, and the oil is discharged to the oil shield through the upper end of the non-directional slide valve 7, so that the oil pressure protection function of the oil shield is not shielded.
Example six
When the reversing valve 13 is a manual reversing valve which is normally closed at two-position four-way, the reversing valve can be used for in-situ control, the reversing valve in an operating state controls the power oil to flow through the lower end of the non-directional slide valve 7, the slide valve moves to an upper limit position under the action of the pressure difference between the power oil and the slide oil, and at the moment, the power oil is communicated to the lower end of the oil-shielding slide valve with low oil pressure for protecting the oil-shielding slide valve, so that the oil-shielding slide valve with low oil pressure protecting function is shielded; the solenoid valve in the non-operating state controls the lower end of the non-directional slide valve 7 to discharge oil, the non-directional slide valve 7 moves to the lower limit position, and the oil is discharged to the oil shield through the upper end of the non-directional slide valve 7, so that the oil pressure protection function of the oil shield is not shielded.
Claims (1)
1. The utility model provides a lubricating oil pressure shield assembly, opens casing (1), coat nut (8) and switching-over valve (13) that have the centre hole, its characterized in that: four oil ports are arranged on two sides of the shell (1) and are respectively an oil inlet (2), an oil breaker oil inlet (3), a power oil inlet (5) and an oil outlet (11), wherein the oil inlet (2) and the oil breaker oil inlet (3) are provided with pipe joints welded outwards and are provided with flat shoulder joints (10), gaskets (9) and coat nuts (8) which are connected outwards, and the power oil inlet (5) and the oil outlet (11) are fixed on the shell (1) through the pipe joints (12) and the gaskets (9) and are provided with flat shoulder joints (10), the gaskets (9) and the coat nuts (8) which are connected outwards; the sliding valve sleeve (6) is arranged on an inner hole of the shell (1), the non-directional sliding valve (7) is arranged in the sliding valve sleeve (6), three convex shoulders are arranged on the non-directional sliding valve (7), and four damping oil ports for controlling the switching of lubricating oil and power oil are formed in the upper convex shoulder and the lower convex shoulder; an upper cover (4) is arranged at the upper end of the shell (1); the lower end of the shell (1) is provided with an oil hole which is communicated with the reversing valve (13) and used for controlling power oil or oil discharge to enter the lower cavity of the non-directional slide valve (7);
the slide valve sleeve (6) is limited at the upper part of the shell (1) through a shaft shoulder; the end face of the non-directional slide valve (7) is provided with a cross flower groove for increasing the contact area between the initial state and oil; the upper end of the shell (1) is provided with a groove for installing an O-shaped ring, the O-shaped ring is tightly pressed by the upper cover (4) through a screw and an elastic washer, the oil pressure of the upper cavity of the non-directional slide valve (7) is sealed to leak, a gap for preventing mechanical over-restriction is reserved between the upper cover (4) and the slide valve sleeve (6), and meanwhile, the upper cover (4) limits the stroke of the non-directional slide valve (7); the reversing valve (13) is arranged at the lower end of the shell (1) through a screw, a gasket and an O-shaped ring, and the O-shaped ring seals the leakage of the lower cavity of the non-directional slide valve (7); four auxiliary mounting holes for fixing the lubricating oil pressure shielding device are formed in the shell (1); the reversing valve (13) is an electromagnetic valve, a hydraulic reversing valve or a manual reversing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710850142.0A CN107605551B (en) | 2017-09-20 | 2017-09-20 | Lubricating oil pressure shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710850142.0A CN107605551B (en) | 2017-09-20 | 2017-09-20 | Lubricating oil pressure shielding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107605551A CN107605551A (en) | 2018-01-19 |
| CN107605551B true CN107605551B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710850142.0A Active CN107605551B (en) | 2017-09-20 | 2017-09-20 | Lubricating oil pressure shielding device |
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| CN (1) | CN107605551B (en) |
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