CN113294539B - Submersible oil-filled tank with compensating ground contact pin and method of operating same - Google Patents

Submersible oil-filled tank with compensating ground contact pin and method of operating same Download PDF

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Publication number
CN113294539B
CN113294539B CN202110576573.9A CN202110576573A CN113294539B CN 113294539 B CN113294539 B CN 113294539B CN 202110576573 A CN202110576573 A CN 202110576573A CN 113294539 B CN113294539 B CN 113294539B
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China
Prior art keywords
oil
sealing plug
thimble
filled
passing hole
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CN202110576573.9A
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CN113294539A (en
Inventor
韩俊
马岭
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702th Research Institute of CSIC
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702th Research Institute of CSIC
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/20—Cable fittings for cables filled with or surrounded by gas or oil

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

A submersible oil-filled box body with a compensation grounding contact pin and an operation method thereof comprise a plurality of oil tanks which are sequentially stacked up and down, wherein two adjacent oil tanks are an upper oil-filled oil tank and a lower oil-filled oil tank, the bottom surface of the upper oil-filled oil tank is provided with a through hole, the contact pin is arranged in the through hole through a sealing ring, the upper part of the contact pin is tightly connected with the upper oil-filled oil tank through a snap spring, the bottom of the contact pin is connected with the lower oil-filled oil tank, and the top surface of the contact pin is provided with a common ground lead through a compression nut; the structure of the contact pin is as follows: the improved ejector pin structure comprises a housing, the middle part of casing is provided with interior conical surface, and the top of interior conical surface is the upper portion hole, and the below of interior conical surface is the lower part hole, the thimble is installed to the downthehole cooperation in lower part, the top surface and the interior conical surface cooperation of thimble, thimble slide from top to bottom along the lower part hole, the top surface butt of thimble has the sealing plug, and the block is installed in the top cooperation of casing, in upper portion hole, installs the spring between sealing plug and the block, convenient operation, reliable operation.

Description

Submersible oil-filled tank with compensating ground contact pin and method of operating same
Technical Field
The invention relates to the technical field of auxiliary equipment of an oil-filled box body, in particular to a submersible oil-filled box body with a compensation grounding contact pin and an operation method thereof.
Background
The submersible electrical system has a plurality of devices and complex wiring, and in many occasions, the junction box is used as a transfer station for connecting all the devices of the submersible, so that the junction box is generally designed into an oil-filled compensation mode in order to reduce the design difficulty of the junction box and the weight of the junction box.
Along with the diversification of submersible function, a submersible often has 2 ~ 3 junction boxes, and is many even reach 5 ~ 7, for making things convenient for equipment to concentrate to arrange, reduces the installation volume simultaneously, often needs to arrange the junction box stack, and the back is arranged in the stack, and the intercommunication work and the ground connection work of the compensation oil between two adjacent boxes have brought the difficulty, troublesome poeration.
Disclosure of Invention
The applicant aims at the defects in the prior art and provides a submersible oil-filled box body with a compensation grounding contact pin and a reasonable structure and an operation method thereof, so that compensation oil between the box bodies can be smoothly communicated, and meanwhile, the grounding wires of the box bodies are connected through the contact pin, so that the box bodies are grounded.
The technical scheme adopted by the invention is as follows:
a submersible oil-filled box body with a compensation grounding contact pin comprises a plurality of oil tanks which are sequentially stacked up and down, wherein two adjacent oil tanks are an upper oil-filled oil tank and a lower oil-filled oil tank, the bottom surface of the upper oil-filled oil tank is provided with a through hole, a contact pin is arranged in the through hole through a sealing ring, the upper part of the contact pin is tightly connected with the upper oil-filled oil tank through a snap spring, the bottom of the contact pin is connected with the lower oil-filled oil tank, and the top surface of the contact pin is provided with a common ground lead through a compression nut;
the structure of the contact pin is as follows: the improved ejector pin structure comprises a housing, the middle part of casing is provided with interior conical surface, and the top of interior conical surface is the upper portion hole, and the below of interior conical surface is the lower part hole, the thimble is installed to the downthehole cooperation in lower part, the top surface and the interior conical surface cooperation of thimble, thimble slide from top to bottom along the lower part hole, the top surface butt of thimble has the sealing plug, and the block is installed in the top cooperation of casing, in the hole of upper portion, installs the spring between sealing plug and the block.
As a further improvement of the above technical solution:
the thimble is smooth round bar, the top surface of thimble extends there is square structure, square structure's top surface and sealing plug support.
The structure of the sealing plug is as follows: the sealing plug comprises a sealing plug body, wherein a top protrusion extends upwards from the top surface of the sealing plug body, the top protrusion is matched with a spring, an inverted cone structure is arranged below the sealing plug body, the bottom surface of the sealing plug body is a bottom plane, and the bottom plane is matched with the top surface of an ejector pin.
A first oil passing hole A is formed above the inner conical surface of the shell, a second oil passing hole B is formed in the lower inner hole, and a third oil passing hole C is formed in the upper inner hole.
The cross section of the cap is of a cross-shaped structure, a convex block is arranged at the bottom of the cap, external threads are arranged outside the convex block, a bottom bulge extends downwards from the bottom of the convex block, and a spring is arranged at the bottom bulge.
The thimble adopts stainless steel material.
The shell, the cover cap and the compression nut are made of brass.
The sealing plug and the O-shaped sealing ring are made of rubber.
The spring is made of stainless steel or carbon spring steel wire surface coating.
A method of operating a submersible oil charge tank with a compensating ground pin, comprising the steps of:
when the lower end of the thimble is not contacted with other objects:
the sealing plug is tightly pressed in the inner conical surface of the shell by a spring, the first oil passing hole A is blocked by the sealing plug, and the oil cannot flow from the first oil passing hole A to the second oil passing hole B;
when the lower end of the thimble is contacted with other objects:
a round rod at the lower end of the thimble moves upwards in the shell, so that the sealing plug is driven to move upwards under the action of a square structure, the first oil passing hole A is communicated with the second oil passing hole B, oil flows to the second oil passing hole B from the first oil passing hole A and also flows to the first oil passing hole A from the second oil passing hole B, and the oil in the upper part of the shell flows to the outside of the contact pin through the third oil passing hole C;
when the lower end of the thimble is separated from the contacted object:
the sealing plug is pushed to the inner conical surface of the shell again under the action of the reset force of the spring, the first oil passing hole A is blocked by the sealing plug again, oil blocking of the first oil passing hole A and the second oil passing hole B is achieved, and meanwhile, external oil flows into the upper portion of the shell through the third oil passing hole C.
The invention has the following beneficial effects:
the oil-filled box has a compact and reasonable structure, is convenient to operate, and has the advantages that through the action of the contact pins, when the oil-filled boxes are overlapped, the rubber sealing parts do not play a sealing role, and compensation oil in the oil-filled boxes can circulate through the inner pore passages of the contact pins; when the oil-filled box body is mutually disconnected, the sealing element in the contact pin resets under the action of spring force to block the inner pore passage of the socket and isolate the oil way, so that the oil in the oil-filled box body cannot be leaked to the outside. Meanwhile, the contact pin also plays a role in communicating and overlapping the ground wires of the oil-filled box body, so that the oil-filled box body can be grounded together.
The main body material of the contact pin is brass, so that the contact pin has excellent conductivity, and a sealing element with a spring reset function is integrated inside the contact pin.
The submersible oil filling box body with the compensation grounding contact pin has the advantages of simple structure and simpler and more convenient processing and material acquisition.
The submersible oil-filling box body with the compensation grounding contact pin is simple and convenient to install and can be quickly installed on the box body.
The submersible oil filling box body with the compensation grounding contact pin provided by the invention can improve the sealing effect of the sealing element by virtue of the pretightening force of the compression spring in a closed state, and can realize quick separation without oil drainage of the oil filling box body.
When the submersible oil charging box body with the compensation grounding contact pin is in an open state, smooth flow of oil in the superposed box body can be realized, and pressure compensation is realized;
when the submersible oil filling box body with the compensation grounding contact pin is in an open state, the interconnection of grounding wires in the superposed box body can be realized through the contact pin.
The contact pin is suitable for the situation that compensation oil needs to be shared or a ground wire needs to be shared when two or more oil-filled box bodies are stacked in an electrical system of a manned submersible vehicle or an unmanned submersible vehicle.
Drawings
Fig. 1 is a schematic structural view of the contact pin of the present invention (the first oil passing hole a and the second oil passing hole B are closed).
Fig. 2 is a schematic structural view of the contact pin of the present invention (the first oil passing hole a and the second oil passing hole B are opened).
FIG. 3 is a schematic structural view of the thimble according to the present invention.
Fig. 4 is a schematic view of the sealing plug of the present invention.
Fig. 5 is a schematic structural diagram of the housing of the present invention.
Fig. 6 is a schematic structural view of the cap of the present invention.
Fig. 7 is a schematic view of the assembly of the pin and the housing of the present invention.
FIG. 8 is a schematic structural view of the upper oil-filled tank body and the lower oil-filled tank body of the present invention when they are disconnected.
Wherein: 1. a thimble; 2. a housing; 3. a sealing plug; 4. a spring; 5. capping; 6. a seal ring; 7. a clamp spring; 8. a common ground wire; 9. a compression nut; 10. an upper oil-filled oil tank; 11. a lower oil-filled oil tank;
101. a square structure;
201. an upper inner bore; 202. an inner conical surface; 203. a lower inner bore;
301. the top is convex; 302. a sealing plug body; 303. an inverted conical structure; 304. a bottom plane;
501. a bump; 502. the bottom is convex.
Detailed Description
The following describes an embodiment of the present invention with reference to the drawings.
As shown in fig. 1-8, the submersible oil-filled tank with the compensation grounding contact pin of the present embodiment includes a plurality of oil tanks stacked in sequence from top to bottom, two adjacent oil tanks are an upper oil-filled oil tank 10 and a lower oil-filled oil tank 11, a through hole is formed in the bottom surface of the upper oil-filled oil tank 10, a contact pin is installed in the through hole through a seal ring 6, the upper portion of the contact pin is tightly connected with the upper oil-filled oil tank 10 through a snap spring 7, the bottom of the contact pin is connected with the lower oil-filled oil tank 11, and a common ground lead 8 is installed on the top surface of the contact pin through a compression nut 9;
the structure of the contact pin is as follows: the ejector pin comprises a shell 2, an inner conical surface 202 is arranged in the middle of the shell 2, an upper inner hole 201 is formed above the inner conical surface 202, a lower inner hole 203 is formed below the inner conical surface 202, an ejector pin 1 is installed in the lower inner hole 203 in a matched mode, the top surface of the ejector pin 1 is matched with the inner conical surface 202, the ejector pin 1 slides up and down along the lower inner hole 203, a sealing plug 3 is abutted to the top surface of the ejector pin 1, a cover cap 5 is installed at the top of the shell 2 in a matched mode, and a spring 4 is installed between the sealing plug 3 and the cover cap 5 in the upper inner hole 201.
The thimble 1 is a smooth round rod, the top surface of the thimble 1 extends to form a square structure 101, and the top surface of the square structure 101 is abutted against the sealing plug 3.
The structure of the sealing plug 3 is as follows: the thimble structure sealing plug comprises a sealing plug body 302, wherein a top bulge 301 extends upwards from the top surface of the sealing plug body 302, the top bulge 301 is matched with a spring 4, an inverted cone structure 303 is arranged below the sealing plug body 302, the bottom surface of the sealing plug body 302 is a bottom plane 304, and the bottom plane 304 is matched with the top surface of the thimble 1.
A first oil passing hole A is formed above an inner conical surface 202 of the shell 2, a second oil passing hole B is formed in a lower inner hole 203, and a third oil passing hole C is formed in an upper inner hole 201.
The cross section of the cap 5 is in a cross-shaped structure, a convex block 501 is arranged at the bottom of the cap 5, an external thread is arranged outside the convex block 501, a bottom bulge 502 extends downwards from the bottom of the convex block 501, and a spring 4 is arranged at the bottom bulge 502.
The thimble 1 is made of stainless steel.
The shell 2, the cap 5 and the compression nut 9 are made of brass.
The sealing plug 3 and the O-shaped sealing ring 6 are made of rubber.
The spring 4 is in the form of a stainless steel or carbon spring wire surface coating.
The operation method of the submersible oil-filled box body with the compensation grounding contact pin comprises the following operation steps:
when the lower end of the thimble 1 is not contacted with other objects:
the sealing plug 3 is pressed in the inner conical surface 202 of the shell 2 by the spring 4, the first oil passing hole A is blocked by the sealing plug 3, and oil cannot flow from the first oil passing hole A to the second oil passing hole B;
when the lower end of the thimble 1 is contacted with other objects:
a round rod at the lower end of the thimble 1 moves upwards in the shell 2, so that the sealing plug 3 is driven to move upwards under the action of the square structure 101, at the moment, the first oil passing hole A is communicated with the second oil passing hole B, oil flows from the first oil passing hole A to the second oil passing hole B and also flows from the second oil passing hole B to the first oil passing hole A, and the oil in the upper part of the shell 2 flows to the outside of the contact pin through the third oil passing hole C;
when the lower end of the thimble 1 is separated from the contacted object:
the sealing plug 3 is pushed to the inner conical surface 202 of the housing 2 again under the action of the restoring force of the spring 4, the first oil passing hole A is blocked by the sealing plug 3 again, the oil blocking of the first oil passing hole A and the second oil passing hole B is realized, and meanwhile, external oil flows into the upper part of the housing 2 through the third oil passing hole C.
The specific structure and function of the invention are as follows:
as shown in figure 1, the submersible oil-filled box body with the compensation grounding contact pin mainly comprises an ejector pin 1, a shell 2, a sealing plug 3, a spring 4 and a cover cap 5.
The lower end of the thimble 1 is a round rod which can move smoothly in an inner hole at the lower end of the shell 2;
the spring 4 provides a pretightening force to tightly press the sealing plug 3 in the inner conical surface 202 of the shell 2;
the lower end of the spring 4 is arranged in the top bulge 301 above the sealing plug 3;
the upper end of the spring 4 rests in a bottom projection 502 below the cap 5.
The cap 5 is connected to the housing 2 by a screw thread.
Three groups of oil passing holes are formed in the shell 2 along the axis direction.
The submersible oil-filled box body with the compensation grounding contact pin is arranged in an upper oil-filled oil tank 10 from bottom to top, the contact pin is tightly connected with the upper oil-filled oil tank 10 through a clamp spring 7, an O-shaped sealing ring 6 is arranged at the joint of a shell 2 and the upper oil-filled oil tank 10, and a common ground lead 8 is tightly connected with a contact pin cover cap 5 through a compression nut 9.
A smooth round rod below the shell 2 is inserted into an inner hole of the lower oil-filled oil tank 11.
The invention is mainly used when multiple oil-filled boxes are overlapped. The modular design and the construction of many oil-filled boxes can be realized, when needing to be changed or removing a certain oil-filled box, the disengagement of the oil-filled box can be realized only by disengaging the fastener for connecting the box, and the operation such as oil drainage is not needed in the process.
The thimble 1 is made of stainless steel or other metal materials;
the shell 2, the cap 5 and the compression nut 9 are all made of brass or other high-conductivity materials;
the sealing plug 3 and the O-shaped sealing ring 6 are both made of rubber or other elastic non-metallic sealing materials;
the spring 4 is made of stainless steel or carbon spring steel wire surface coating.
In the actual use process:
when the lower end of the thimble 1 is not in contact with other objects, the sealing plug 3 is firmly pressed in the inner conical surface 202 of the housing 2 by the spring 4, the first oil passing hole a is blocked by the cylindrical section of the sealing plug 3 and the inverted cone structure 303 of the sealing plug 3, and the oil cannot flow from the first oil passing hole a to the second oil passing hole B.
When the lower end of the thimble 1 contacts with other objects, the light ring round rod at the lower end of the thimble 1 moves upwards in the shell 2, so that the sealing plug 3 is driven to move upwards, the first oil passing hole A is connected with the second oil passing hole B, and the oil liquid flows to the second oil passing hole B from the first oil passing hole A and also flows to the first oil passing hole A from the second oil passing hole B. Oil in the upper part of the shell 2 flows to the outside of the contact pin through the third oil passing hole C.
When the lower end of the thimble 1 is separated from the contacted object, the sealing plug 3 is pushed to the inner conical surface 202 of the shell 2 again under the action of the restoring force of the spring 4, the first oil passing hole a is blocked by the cylindrical section of the sealing plug 3 and the conical surface section below the sealing plug 3 again, and oil blocking of the first oil passing hole a and the second oil passing hole B is realized. Meanwhile, the external oil flows into the upper portion of the housing 2 through the third oil passing hole C.
The contact pin realizes the sealing of the upper oil-filled oil tank 10 with the outside through the O-shaped sealing ring 6 arranged on the outer side of the shell 2, and the contact pin shell 2 is tightly connected with the upper oil-filled oil tank 10 through the clamp spring 7. The ground wire in the upper oil-filled oil tank 10 is tightly connected with the pin nut cap 5 through the compression nut 9 by connecting the common ground wire 8, the pin nut cap 5 is tightly connected with the shell 2 through a thread, and the optical ring round rod below the shell 2 is inserted into the optical ring inner hole of the lower oil-filled oil tank 11, so that the interconnection of the ground wire in the upper oil-filled oil tank 10 and the lower oil-filled oil tank 11 is realized. Meanwhile, the thimble 1 and the lower oil-filled oil tank 11 are released and pressed back to the inside of the shell 2, and the contact pin can realize the intercommunication of oil in the upper oil-filled oil tank 10 and the lower oil-filled oil tank 11.
When the upper oil-filled oil tank 10 is disconnected with the lower oil-filled oil tank 11, the thimble 1 extends out under the action of the reset force of the spring 4, and the first oil passing hole A and the second oil passing hole B in the contact pin are blocked, so that the oil in the upper oil-filled oil tank 10 cannot flow out of the contact pin.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.

Claims (8)

1. The utility model provides a submersible ware oil charge box with compensation ground connection contact pin which characterized in that: the oil tank comprises a plurality of oil tanks which are sequentially stacked up and down, wherein two adjacent oil tanks are an upper oil-filled oil tank (10) and a lower oil-filled oil tank (11), a through hole is formed in the bottom surface of the upper oil-filled oil tank (10), a contact pin is arranged in the through hole through a sealing ring (6), the upper part of the contact pin is tightly connected with the upper oil-filled oil tank (10) through a snap spring (7), the bottom of the contact pin is connected with the lower oil-filled oil tank (11), and a common-ground lead (8) is arranged on the top surface of the contact pin through a compression nut (9);
the structure of the contact pin is as follows: the thimble structure comprises a shell (2), wherein an inner conical surface (202) is arranged in the middle of the shell (2), an upper inner hole (201) is formed above the inner conical surface (202), a lower inner hole (203) is formed below the inner conical surface (202), a thimble (1) is installed in the lower inner hole (203) in a matched mode, the top surface of the thimble (1) is matched with the inner conical surface (202), the thimble (1) slides up and down along the lower inner hole (203), a sealing plug (3) is abutted to the top surface of the thimble (1), a sealing plug cap (5) is installed at the top of the shell (2) in a matched mode, and a spring (4) is installed between the sealing plug (3) and the sealing cap (5) in the upper inner hole (201); a first oil passing hole (A) is formed above an inner conical surface (202) of the shell (2), a second oil passing hole (B) is formed in a lower inner hole (203), and a third oil passing hole (C) is formed in an upper inner hole (201); thimble (1) is glossy round bar, the top surface of thimble (1) extends there is square structure (101), the top surface and sealing plug (3) of square structure (101) support.
2. The submersible oil-filled tank with compensating ground pin of claim 1, wherein: the structure of the sealing plug (3) is as follows: the sealing plug comprises a sealing plug body (302), wherein a top protrusion (301) extends upwards from the top surface of the sealing plug body (302), the top protrusion (301) is matched with a spring (4), an inverted cone structure (303) is arranged below the sealing plug body (302), the bottom surface of the sealing plug body (302) is a bottom plane (304), and the bottom plane (304) is matched with the top surface of a thimble (1).
3. The submersible oil-filled tank with compensating grounding pin of claim 1, wherein: the cross section of the cap (5) is of a cross-shaped structure, a convex block (501) is arranged at the bottom of the cap (5), an external thread is arranged outside the convex block (501), a bottom bulge (502) extends downwards from the bottom of the convex block (501), and a spring (4) is arranged at the bottom bulge (502).
4. The submersible oil-filled tank with compensating ground pin of claim 1, wherein: the thimble (1) is made of stainless steel.
5. The submersible oil-filled tank with compensating ground pin of claim 1, wherein: the shell (2), the cap (5) and the compression nut (9) are made of brass.
6. The submersible oil-filled tank with compensating ground pin of claim 1, wherein: the sealing plug (3) and the sealing ring (6) are made of rubber.
7. The submersible oil-filled tank with compensating grounding pin of claim 1, wherein: the spring (4) is in the form of stainless steel or carbon spring steel wire surface coating.
8. A method of operating an submersible oil-filled tank with a compensating ground pin as in claim 1, wherein: the method comprises the following operation steps:
when the lower end of the thimble (1) is not contacted with other objects:
the sealing plug (3) is pressed in an inner conical surface (202) of the shell (2) by a spring (4), the first oil passing hole (A) is blocked by the sealing plug (3), and oil cannot flow from the first oil passing hole (A) to the second oil passing hole (B);
when the lower end of the thimble (1) is contacted with other objects:
a round rod at the lower end of the thimble (1) moves upwards in the shell (2) so as to drive the sealing plug (3) to move upwards under the action of the square structure (101), at the moment, the first oil passing hole (A) is communicated with the second oil passing hole (B), oil flows to the second oil passing hole (B) from the first oil passing hole (A) and also flows to the first oil passing hole (A) from the second oil passing hole (B), and the oil in the upper part of the shell (2) flows to the outside of the contact pin through the third oil passing hole (C);
when the lower end of the thimble (1) is separated from the contacted object:
the sealing plug (3) is pushed to the inner conical surface (202) of the shell (2) again under the action of the reset force of the spring (4), the first oil passing hole (A) is blocked by the sealing plug (3) again, oil blocking of the first oil passing hole (A) and the second oil passing hole (B) is achieved, and meanwhile, external oil flows into the upper portion of the shell (2) through the third oil passing hole (C).
CN202110576573.9A 2021-05-26 2021-05-26 Submersible oil-filled tank with compensating ground contact pin and method of operating same Active CN113294539B (en)

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Application Number Priority Date Filing Date Title
CN202110576573.9A CN113294539B (en) 2021-05-26 2021-05-26 Submersible oil-filled tank with compensating ground contact pin and method of operating same

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CN113294539A CN113294539A (en) 2021-08-24
CN113294539B true CN113294539B (en) 2022-07-12

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CN201466654U (en) * 2009-08-05 2010-05-12 黄河勘测规划设计有限公司 Detachable connection sealing structure of water cable and sensor
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