Dredging pump cavity inspection cover and inlet and outlet method thereof
阅读说明：本技术 一种疏浚泵泵腔检查盖及其进出方法 (Dredging pump cavity inspection cover and inlet and outlet method thereof ) 是由 武永顶 王文魁 郭涛 庄海飞 刘明明 曹蕾 吴腾伟 夏铖 马源 兰剑 于 2019-10-28 设计创作，主要内容包括：一种疏浚泵泵腔检查盖检修和维护方法,在疏浚泥泵吸口短管的专用人孔中使用,检修人员通过检查盖模块,进入吸口管道模块；再顺着管道检查疏浚泵模块内,检修和维护疏浚泵内部磨损情况；检修和维护完毕,从检查盖模块出来,关闭检查盖模块；正常关闭时,手握把手(6),向下压盖,电动推杆(9)提供反向支撑力,匀速关闭。专门设计的疏浚泵泵腔检查盖,包括泵腔检查盖体电动推杆和人孔壁(4)；所述泵腔检查盖体包括上盖板(1)、环形板(2)和下盖板(3),上盖板与下盖板之间通过环形板焊接为一体。在疏浚泥泵吸口管道中使用,增加泵腔检查盖开闭的缓冲作用,减缓惯性力,仅需人力便可打开和闭合,使泥泵观察维护更具有便捷性。(A dredging pump cavity inspection cover overhauling and maintaining method is used in a special manhole of a dredging pump suction port short pipe, and an overhauling person enters a suction port pipeline module through an inspection cover module; then, checking the inside of the dredging pump module along the pipeline, and overhauling and maintaining the internal abrasion condition of the dredging pump; after the maintenance is finished, the inspection cover module is taken out and closed; when the valve is normally closed, the handle (6) is held by hand, the cover is pressed downwards, the electric push rod (9) provides reverse supporting force, and the valve is closed at a constant speed. The specially designed pump cavity inspection cover of the dredging pump comprises an electric push rod of a pump cavity inspection cover body and a manhole wall (4); the pump cavity inspection cover body comprises an upper cover plate (1), a ring plate (2) and a lower cover plate (3), and the upper cover plate and the lower cover plate are welded into a whole through the ring plate. The suction port pipeline of the dredge pump is used, the buffering effect of opening and closing of the pump cavity inspection cover is increased, the inertia force is reduced, and the pump can be opened and closed only by manpower, so that the dredge pump is more convenient to observe and maintain.)
1. A method for repairing and maintaining the check cover of the pump cavity of dredge pump features that it is used in the special manhole of short tube of suction inlet of dredge pump
(1) Constructing and installing a dredging pump cavity inspection cover, constructing an inspection cover module (12), a suction port pipeline module (13) and a dredging pump module (14);
(2) the maintainer enters the suction port pipeline module by checking the cover module;
(3) then, checking the inside of the dredging pump module along the pipeline, and overhauling and maintaining the internal abrasion condition of the dredging pump;
(4) after the maintenance is finished, the inspection cover module is taken out and closed; when the valve is normally closed, the handle (6) is held by hand, the cover is pressed downwards, the electric push rod (9) provides reverse supporting force, and the valve is closed at a constant speed.
2. A dredging pump chamber inspection cover specially designed according to the method of claim 1, characterized in that, used in the special manhole of the dredging pump suction nozzle stub, comprises a pump chamber inspection cover body electric push rod and a manhole wall (4);
the pump cavity inspection cover body comprises an upper cover plate (1), an annular plate (2) and a lower cover plate (3), and the upper cover plate and the lower cover plate are welded into a whole through the annular plate;
the electric push rod is arranged between the upper cover plate and the manhole wall;
the upper surface of the upper cover plate (1) is provided with a lifting lug (5) and a handle (6), the lifting lug is convenient for lifting by adopting a traditional method, and the handle is convenient for manually opening and closing the cover plate; the left and the right of the lower surface are respectively provided with an electric rod connector (7), and the left and the right of the inner surface of the corresponding hole wall (4) are respectively provided with an electric rod connector (8).
3. The inspection cover according to claim 2, wherein the connection ports (7, 8) at both ends of the power push rod are respectively arranged on the lower surface of the upper cover plate and the manhole wall and are in a hinged relationship; the electric push rod is sleeved by an inner straight rod and an outer straight rod, the inner straight rod is connected with an output shaft of the motor, and the telescopic activities of the inner straight rod and the outer straight rod are controlled by the control device (11), so that buffering assistance is provided for opening and closing the pump cavity inspection cover.
4. An inspection cover as claimed in claim 2, characterised in that the lower cover plate (3) is ground for the duct cut, the projection plane being circular, the lower cover plate cooperating with the duct (10).
Technical Field
The invention relates to a dredging pump cavity inspection method for a manhole structure on a short pipe of a suction port of a dredging pump.
Background
The large-scale dredge the dredge pump wearing and tearing comparatively seriously, especially neotype high-efficient high-pressure dredge pump, for guaranteeing the availability factor of high-efficient dredge pump, need the constructor pass through inside the dredge pump chamber inspection lid gets into the dredge pump, the regular mud pump impeller wearing and tearing condition of observation, and current dredge pump suction inlet pipeline uses pump chamber inspection lid weight heavier, open and close and need use the loop wheel machine for ship, and just can open and close pump chamber inspection lid smoothly through many people's cooperation, thereby be unfavorable for the dredge pump of high frequency to maintain.
This operation consumes a lot of manpower and increases time cost. If the pump cavity inspection cover can be safely opened and closed only by manpower, the pump cavity inspection cover has important significance for maintenance of the mud pump.
Disclosure of Invention
Aiming at the existing situation, the invention provides the pump cavity inspection cover which is used in a suction port pipeline of the dredge pump, ensures the stability of the flow state at the suction port of the dredge pump, increases the buffer effect of the opening and closing of the pump cavity inspection cover, slows down the inertia force, can be opened and closed only by manpower, and ensures that the observation and maintenance of the dredge pump are more convenient.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method for repairing and maintaining the check cover of the pump cavity of dredge pump features that it is used in the special manhole of short tube of suction inlet of dredge pump
(1) Constructing and installing a dredging pump cavity inspection cover, constructing an inspection cover module (12), a suction port pipeline module (13) and a dredging pump module (14);
(2) the maintainer enters the suction port pipeline module by checking the cover module;
(3) then, checking the inside of the dredging pump module along the pipeline, and overhauling and maintaining the internal abrasion condition of the dredging pump;
(4) after the maintenance is finished, the inspection cover module is taken out and closed; when the valve is normally closed, the handle (6) is held by hand, the cover is pressed downwards, the electric push rod (9) provides reverse supporting force, and the valve is closed at a constant speed.
The dredging pump cavity inspection cover specially designed by the method is characterized by being used in a special manhole of a short pipe of a suction port of the dredging pump and comprising an electric push rod of a pump cavity inspection cover body and a manhole wall (4);
the pump cavity inspection cover body comprises an upper cover plate (1), an annular plate (2) and a lower cover plate (3), and the upper cover plate and the lower cover plate are welded into a whole through the annular plate;
the electric push rod is arranged between the upper cover plate and the manhole wall;
the upper surface of the upper cover plate (1) is provided with a lifting lug (5) and a handle (6), the lifting lug is convenient for lifting by adopting a traditional method, and the handle is convenient for manually opening and closing the cover plate; the left and the right of the lower surface are respectively provided with an electric rod connector (7), and the left and the right of the inner surface of the corresponding hole wall (4) are respectively provided with an electric rod connector (8).
The inspection cover is characterized in that connecting ports (7, 8) at two ends of the electric push rod are respectively arranged on the lower surface of the upper cover plate and the manhole wall and are hinged; the electric push rod is sleeved by an inner straight rod and an outer straight rod, the inner straight rod is connected with an output shaft of the motor, and the telescopic activities of the inner straight rod and the outer straight rod are controlled by the control device (11), so that buffering assistance is provided for opening and closing the pump cavity inspection cover.
The inspection cover is characterized in that the lower cover plate (3) is formed by cutting and polishing a pipeline, the projection surface is circular, and the lower cover plate is matched with the pipeline (10).
The inspection cover is characterized in that the electrical control part: the electric push rod is designed into an industrial-grade electric push rod and is provided with a motor, the electric push rod is provided with an inner straight rod and an outer straight rod which are sleeved, the inner straight rod is connected with an output shaft of the motor, and the motor is connected with a control device (11) outside an inspection cover of a pump cavity of the dredging pump, so that an external power supply and a control instruction are obtained.
The inspection cover is characterized in that the control device (11) is arranged in the upper cover plate (1), and an input panel of the inspection cover is exposed out of the outer surface of the upper cover plate.
The pump cavity inspection cover of the invention has the following beneficial effects:
1) the invention is used as a pump cavity inspection cover matched with a suction port pipeline of the dredge pump, is matched with the inner wall of the pipeline, ensures the stability of the flow state at the suction port of the dredge pump and has important significance for reducing the abrasion of the dredge pump.
2) The invention designs the electric push rod for opening and closing the pump cavity checking cover, and provides opening and closing assistance for the opening and closing process of the heavier pump cavity checking cover, so that the pump cavity checking cover can be opened and closed safely and smoothly only by manual force.
3) The invention has simple and safe opening and closing process, does not need to use a ship crane, can effectively shorten the maintenance time and reduce the labor and time cost.
Drawings
Fig. 1 is a three-dimensional structure diagram of a pump chamber inspection cover of a dredging pump.
Fig. 2 is a drawing of the integral installation application of the pump chamber inspection cover of the dredging pump.
Figure 3 is a top view of an inspection cover for a pump chamber of a dredge pump of the present invention.
Figure 4 is a cross-sectional view (closed state) of the pump chamber inspection cover of the dredge pump of the present invention.
Figure 5 is a cross-sectional view (open state) of the pump chamber inspection cover of the dredge pump of the present invention.
Numerical labeling:
an upper cover plate 1; an annular plate 2; a lower cover plate 3; a manhole wall 4; a lifting lug 5; a handle 6;
a
an electric rod interface 7; an electric rod interface 8; an
the inspection lid module 12;
a suction
a
Detailed Description
The invention is further illustrated with reference to the accompanying drawings and specific examples:
referring to fig. 1-5, as shown,
a dredging pump cavity inspection cover is characterized by being used in a special manhole of a dredging pump suction port short pipe, and comprising a pump cavity inspection cover body
the pump cavity inspection cover body comprises an upper cover plate 1, an annular plate 2 and a lower cover plate 3, and the upper cover plate and the lower cover plate are welded into a whole through the annular plate;
the electric push rod is arranged between the upper cover plate and the manhole wall;
the upper surface of the upper cover plate 1 is provided with lifting lugs 5 and handles 6, the lifting lugs are convenient to be lifted by a crane by adopting a traditional method, and the handles are convenient to manually open and close the cover plate; the left and the right of the lower surface are respectively provided with an electric rod connector 7, and the left and the right of the inner surface of the corresponding hole wall 4 are respectively provided with an electric rod connector 8.
In this embodiment, the electrical control section: the
Furthermore, connecting ports (7, 8) at two ends of the electric push rod are respectively arranged on the lower surface of the upper cover plate and the manhole wall and are hinged; the electric push rod is sleeved by an inner straight rod and an outer straight rod, the inner straight rod is connected with an output shaft of the motor, and the telescopic activities of the inner straight rod and the outer straight rod are controlled by the control device 11, so that buffering assistance is provided for opening and closing of the pump cavity inspection cover.
Further, the lower cover plate 3 is formed by cutting and polishing a pipeline, the projection surface is circular, and the lower cover plate 3 is matched with the
The lower cover plate 3 is manufactured by cutting the wall of the pipe body and grinding, and the lower cover plate is in fit with the streamline of the pipeline.
Application scenarios
The manual use operation process comprises the following steps:
when the manual opening is carried out, the handle 6 on the upper surface of the upper cover plate 1 is held by both hands and turned upwards, the
When the inspection cover is opened or closed, when the hand is accidentally dropped by a worker and the inspection cover falls down, the electric push rod provides a certain reverse supporting force, so that the falling inertia is reduced, and accidents can be avoided.
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