CN209856147U - Hydraulic oil filtering device for ground blowout preventer control device loop - Google Patents

Abstract

The utility model discloses a hydraulic oil filtering device of a ground blowout preventer control device loop, which comprises an oil tank, an oil return branch pipe, a buffering manifold and an oil return filter; a buffer manifold is fixed at the upper part of the oil tank, the buffer manifold is mainly made of steel pipes, an oil return branch pipe of a hydraulic control valve is fixed on the steel pipes, two end parts of the steel pipes are connected with oil return filters, and oil outlet holes of the oil return filters are connected into the oil tank; a valve is arranged between the buffer manifold and the oil return filter; the oil inlet side and the oil outlet side of the filter element seat are connected with a differential pressure detector through connecting pipes; the differential pressure detector is connected with an alarm or a controller of a surface blowout preventer control device. The utility model provides a can change the return circuit hydraulic oil filter equipment of filter cartridge under the circumstances of the work of ground preventer controlling means not stopping to can high-efficiently clear away the impurity in the return circuit oil, improve and filter cleanliness and filtration efficiency, thereby improve whole preventer controlling means's work efficiency.

Description

Hydraulic oil filtering device for ground blowout preventer control device loop

Technical Field

The utility model belongs to the technical field of ground preventer control device, concretely relates to ground preventer control device return circuit hydraulic oil filter equipment.

Background

The ground blowout preventer control device is an important device for controlling a wellhead blowout preventer stack, a hydraulic throttle valve and a kill valve, and is an indispensable device in drilling and operation. The pipeline length is long, the valves are numerous, and the oil path is complex; therefore, in the hydraulic control system of the blowout preventer control device, the filtering device is used for removing dirt or impurities contained in the hydraulic oil, so that the smooth operation of the hydraulic control system can be ensured. If the hydraulic oil contains too much impurities, the service life of controlled devices such as a blowout preventer and a hydraulic valve can be influenced, valve pieces in an oil way can be damaged, even a pipeline can be blocked, and the normal work of the system can be influenced.

Utility model patent: the patent number ZL200920107134.8 can realize return oil filtration of hydraulic oil in a hydraulic control system, and the cleanliness of the return hydraulic oil entering an oil tank is ensured; this patent has been equipped with two filters at the upper portion both ends of returning oil tank, filters return circuit hydraulic oil in the oil return pipe, and it returns oil pipe way and gets into a total entry, because ground preventer controlling means's oil circuit is numerous, and operating time is long, but this utility model only changes and clean the filter when controlling means stop work, causes controller work efficiency low, and it is poor to probably have the not timely filter effect of changing the filter production, exists the defect.

SUMMERY OF THE UTILITY MODEL

The purpose of the invention is as follows: the utility model aims at providing a can change the return circuit hydraulic oil filter equipment that the filter crosses the filter core under the circumstances of not stopping ground preventer control device work to can high-efficiently clear away the impurity in the return circuit oil, improve and filter cleanliness and filtration efficiency.

The technical scheme is as follows: in order to achieve the above purpose, the technical solution adopted by the present invention is as follows: the hydraulic oil filtering device of the ground blowout preventer control device loop comprises an oil tank, an oil return branch pipe, a buffering header pipe and an oil return filter; a buffer manifold is fixed at the upper part of the oil tank, the buffer manifold is mainly made of steel pipes, an oil return branch pipe of a hydraulic control valve is fixed on the steel pipes, two end parts of the steel pipes are connected with oil return filters, and oil outlet holes of the oil return filters are connected into the oil tank; a valve is arranged between the buffer manifold and the oil return filter; the oil return filter comprises a shell with an oil inlet hole and an oil outlet hole and a filter core seat clamped in the shell, wherein a flange threaded hole connected with an oil inlet of the shell is formed in the front end of the filter core seat, a convex oil outlet end is formed in the lower end of the filter core seat and is directly clamped in the oil outlet hole of the shell to discharge filtered hydraulic oil into an oil tank, and a pressure difference detector is connected to the oil inlet side and the oil outlet side of the filter core seat through connecting pipes; the differential pressure detector is connected with an alarm or a controller of a surface blowout preventer control device.

Preferably, the valve is a manual-hydraulic flat valve or a manual-hydraulic ball valve.

Preferably, the upper end face and the outer end face of the shell of the oil return filter can be opened and closed, a sealing ring is arranged between the protruding oil outlet end of the filter core seat and the oil outlet hole of the shell, and a sealing ring is arranged between the oil outlet hole of the shell and the oil tank.

Preferably, the buffering header is a triangular pipeline, a plurality of oil return branch pipe connectors are arranged at the top end of the joint of the two bevel edge pipelines of the triangular pipeline, and the horizontal ends of the two bevel edge pipelines of the triangular pipeline are respectively connected with an oil return filter.

Preferably, the buffer headers are isosceles triangle pipelines, the included angle between the inclined edges and the horizontal line is 10-30 degrees, and the corners of each angle are in arc transition.

Preferably, a heating pipe is coiled outside the buffer manifold to heat the hydraulic oil in the buffer manifold.

Has the advantages that: compared with the prior art, the utility model has the advantages of it is following: the utility model can realize the return oil filtration of the hydraulic oil in the hydraulic control system, and ensure the cleanliness of the hydraulic oil in the loop when entering the oil tank; the arrangement of the other two oil return filters and the valve can replace and maintain the oil return filter by closing the valve on one side when one oil return filter needs to be replaced or damaged, so that the work of the whole blowout preventer control device cannot be influenced, and the work efficiency of the blowout preventer controller is obviously improved; the pressure difference detector can visually reflect the working condition of the oil return filter, and an operator is reminded to overhaul the oil return filter through the alarm device or the display device of the controller; the design of the buffer manifold of the triangular pipeline and the additionally arranged heating pipes on the periphery of the buffer manifold greatly improve the filtering speed and the filtering cleanliness of the hydraulic oil, and the working efficiency of the loop hydraulic oil filtering device is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of the external structure of the buffer header of fig. 1.

Detailed Description

The invention will be further elucidated with reference to the drawing.

As shown in fig. 1 and fig. 2, the hydraulic oil filtering device of the control device loop of the ground blowout preventer comprises an oil tank 1, an oil return branch pipe 2, a buffering header pipe 3 and an oil return filter 4; a buffer manifold 3 is fixed on the upper part of the oil tank 1, the buffer manifold 3 is mainly made of steel pipes, an oil return branch pipe 2 of a hydraulic control valve is fixed on the steel pipes, oil return filters 4 are connected with the two end parts of the steel pipes, and oil outlet holes of the oil return filters 4 are connected into the oil tank 1; a valve 5 is arranged between the buffer manifold 3 and the return oil filter 4, and the valve 5 is a manual hydraulic flat valve or a manual hydraulic ball valve; the oil return filter 4 comprises a shell 41 with an oil inlet hole and an oil outlet hole and a filter core seat 42 clamped in the shell 41, a flange threaded hole connected with an oil inlet of the shell 41 is formed in the front end of the filter core seat 42, a protruding oil outlet end is formed in the lower end of the filter core seat 42 and is directly clamped in the oil outlet hole of the shell 41 to discharge filtered hydraulic oil into the oil tank 1, and a differential pressure detector 6 is connected to the oil inlet side and the oil outlet side of the filter core seat 42 through connecting pipes; the differential pressure detector 6 is connected to an alarm or a controller of a surface blowout preventer control device. Hydraulic oil in the oil return branch pipe 2 flows into the buffer header pipe 3 and then enters the oil return filter 4 through the valve 5, the oil return filter 4 filters the hydraulic oil and then discharges the hydraulic oil into the oil tank 1, the oil return filter 4 is internally provided with the pressure difference detector 6, when the pressure difference detector 6 detects that the pressure difference is greater than a set safety value, the alarm is sounded or the controller displays a signal to alarm, the valve 5 between the oil return filter 4 and the buffer header pipe 3 can be closed manually or electrically, because the buffer header pipe 3 is provided with two oil return filters 4, when one needs to be overhauled or replaced, the other can be used, and the work of the integral blowout preventer control device is not influenced.

The upper end face and the outer end face of the shell 41 of the oil return filter 4 can be opened and closed, the filter core seat 42 is convenient to take out and install, a sealing ring is arranged between the protruding oil outlet end of the filter core seat 42 and the oil outlet hole of the shell 41, leakage of hydraulic oil is prevented, and a sealing ring (not marked in a sealing ring figure) is arranged between the oil outlet hole of the shell 41 and the oil tank 1.

The oil outlet end of the buffering header pipe 3 is connected into the inlet of the valve 5, the outlet of the valve 5 is connected into the oil inlet of the oil return filter 4, and the joint is provided with a sealing ring.

In order to increase the flowing speed of the hydraulic oil in the buffering manifold 3 and accelerate the filtering speed of the hydraulic oil, as shown in fig. 2, the buffering manifold 3 is a triangular pipeline, the top end of the joint of two bevel-edge pipelines of the triangular pipeline is provided with a plurality of oil return branch pipe 2 connectors, and the horizontal ends of the two bevel-edge pipelines of the triangular pipeline are respectively connected with an oil return filter 4; the buffer manifolds 3 are isosceles triangle pipelines, the included angle between the oblique side and the horizontal line is 10-30 degrees, and the corners of each angle are in arc transition. Therefore, the loop hydraulic oil flowing through the buffering header 3 is in a downhill state, and the flowing speed of the hydraulic oil in the buffering header 3 can be effectively improved.

In order to improve the filtering speed and the filtering cleanliness of the hydraulic oil in the loop, the heating pipe 7 is coiled outside the buffering manifold 3 to heat the hydraulic oil in the buffering manifold 3, the viscosity of the heated hydraulic oil is reduced, the flowing speed is accelerated, the adhesion degree of impurities and the hydraulic oil is reduced, the working pressure of the oil return filter 4 is reduced, and the filtering effect is improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. The hydraulic oil filtering device for the ground blowout preventer control device loop comprises an oil tank (1), an oil return branch pipe (2), a buffer header pipe (3) and an oil return filter (4); a buffer manifold (3) is fixed on the upper part of the oil tank (1), the buffer manifold (3) is mainly made of steel pipes, an oil return branch pipe (2) of a hydraulic control valve is fixed on the steel pipes, oil return filters (4) are connected to two end parts of the steel pipes, and oil outlet holes of the oil return filters (4) are connected into the oil tank (1); the method is characterized in that: a valve (5) is arranged between the buffer header (3) and the oil return filter (4); the oil return filter (4) comprises a shell (41) with an oil inlet hole and an oil outlet hole and a filter core seat (42) clamped in the shell (41), the front end of the filter core seat (42) is provided with a flange threaded hole connected with the oil inlet of the shell (41), the lower end of the filter core seat (42) is provided with a protruding oil outlet end which is directly clamped in the oil outlet hole of the shell (41) to discharge filtered hydraulic oil into the oil tank (1), and the oil inlet side and the oil outlet side of the filter core seat (42) are connected with a differential pressure detector (6) through connecting pipes; the differential pressure detector (6) is connected with an alarm or a controller of a surface blowout preventer control device.

2. The surface blowout preventer control apparatus circuit hydraulic oil filtering device of claim 1, wherein: the valve (5) is a manual hydraulic flat valve or a manual hydraulic ball valve.

3. The surface blowout preventer control apparatus circuit hydraulic oil filtering device of claim 1, wherein: the oil return filter is characterized in that the upper end face and the outer end face of a shell (41) of the oil return filter (4) can be opened and closed, a sealing ring is arranged between the protruding oil outlet end of the filter element seat (42) and an oil outlet of the shell (41), and a sealing ring is arranged between the oil outlet of the shell (41) and the oil tank (1).

4. The surface blowout preventer control apparatus circuit hydraulic oil filtering device of claim 1, wherein: the buffer collecting pipe (3) is a triangular pipeline, the top end of the joint of the two bevel edge pipelines of the triangular pipeline is provided with a plurality of oil return branch pipe (2) interfaces, and the horizontal ends of the two bevel edge pipelines of the triangular pipeline are respectively connected with an oil return filter (4).

5. The surface blowout preventer control apparatus circuit hydraulic oil filtering device of claim 4, wherein: the buffer headers (3) are isosceles triangle pipelines, the included angle between the oblique sides and the horizontal line is 10-30 degrees, and the corners of each angle are in arc transition.

6. A surface blowout preventer control apparatus circuit hydraulic oil filtering apparatus according to claim 4 or 5, wherein: and a heating pipe (7) is coiled outside the buffer manifold (3) to heat the hydraulic oil in the buffer manifold (3).