CN109713832B - Cable movable sealing joint for submersible pump - Google Patents
Cable movable sealing joint for submersible pump Download PDFInfo
- Publication number
- CN109713832B CN109713832B CN201910052258.9A CN201910052258A CN109713832B CN 109713832 B CN109713832 B CN 109713832B CN 201910052258 A CN201910052258 A CN 201910052258A CN 109713832 B CN109713832 B CN 109713832B
- Authority
- CN
- China
- Prior art keywords
- cable
- sealing sleeve
- thread seat
- sealing
- cable core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Cable Accessories (AREA)
Abstract
The cable movable sealing joint for the submersible pump is characterized in that cable cores of an upper cable and a lower cable are mutually contacted and conducted through the cable core spring insertion pipe in the cable core middle joint, a lower gland, a lower thread seat, a lower sealing sleeve, an upper thread seat and an upper gland are coaxially arranged outside the cable core middle joint, a plurality of sealing surfaces such as an upper cylindrical sealing surface, a middle cylindrical sealing surface, a lower cylindrical sealing surface, an upper sealing plane and a lower sealing plane are formed between the contact surfaces of the upper gland, the middle cylindrical sealing surface, the lower cylindrical sealing surface, the upper sealing plane and the lower sealing plane, the sealing is reliable, the waterproof and dustproof performance is high, the connecting cable of the submersible pump can be formed by mutually connecting a plurality of cables, special process treatment is not needed on an installation site, and the joint is convenient to package, transport, install and detach, maintain and overhaul operation, and high in safety coefficient.
Description
Technical Field
The invention belongs to cable sealing technology of an electric submersible pump, and particularly relates to a movable cable sealing joint for an electric submersible pump.
Background
The submerged electric pump is used as common mechanical equipment in fluid delivery sites and is widely applied to industries such as gold, electric power, light spinning, petroleum, chemical industry, chemical fertilizer, papermaking, environmental protection and the like, and mainly comprises pump type pumps such as well pump, submerged sewage pump, submerged mixed flow pump, submerged axial flow pump and the like; the difference between the submersible electric pump and the common pump is mainly that: the motor and the pump head which provide driving power in the submersible electric pump are combined to form an integral structure so as to meet the requirement of submerged operation, the submersible electric motor is mutually connected with an external power grid control box through a power cable, a long distance is usually reserved between the power grid control box and a use place of the submersible electric pump, the length of the connected power cable is correspondingly long, the traditional connection power cable generally adopts the whole cable in order to prevent the water leakage of the connected power cable in an underwater working environment, the cable is often damaged due to collision in the transportation process with the submersible electric pump, the maintenance and repair are difficult, the installation connection and the laying operation are inconvenient, and potential safety hazards exist.
Disclosure of Invention
The invention aims to solve the technical problem of providing the movable cable sealing joint for the submersible pump, which can be used for sealing and connecting a power cable, is convenient to transport, convenient to mount, dismount, maintain and overhaul, reliable in connection and high in safety coefficient.
The invention relates to a cable movable sealing joint for a submersible pump, which comprises a lower gland, a lower thread seat, a lower sealing sleeve, an upper thread seat and an upper gland, wherein the lower gland, the lower thread seat, the lower sealing sleeve, the upper thread seat and the upper gland are coaxially arranged at the connection part of an upper end cable and a lower end cable; a cylindrical cable core wire middle joint is arranged between the upper end cable and the lower end cable, a jack which is penetrated up and down is arranged at a position of the cable core wire middle joint corresponding to the wire cores of the upper end cable and the lower end cable, a cable core wire spring insertion pipe is arranged in the jack, and the wire cores of the upper end cable and the lower end cable are inserted from the upper end and the lower end of the cable core wire spring insertion pipe and are in contact conduction; the lower sealing sleeve is a rotating body formed by rotating an upright Z-shaped geometric shape around an axle center, an inner hole formed by the lower sealing sleeve is provided with an inner limit step, an outer circumferential surface of the lower sealing sleeve is provided with an elastic sleeve with an outer limit step, the upper sealing sleeve is a rotating body formed by rotating a transverse T-shaped geometric shape around the axle center, the outer circumferential surface of the upper sealing sleeve is provided with an elastic sleeve with a circular limit boss, the upper sealing sleeve and the lower sealing sleeve are sleeved outside a cable core middle joint at the same time, the upper section of the lower sealing sleeve is sleeved outside the lower section of the upper sealing sleeve, the inner diameter of the lower section of the upper sealing sleeve is matched with the outer diameters of an upper end cable, a lower end cable and a cable core middle joint, the outer surface of the upper sealing sleeve is contacted with the inner surface of an upper thread seat to form an upper cylindrical sealing surface, the outer diameter of the lower section of the upper sealing sleeve is matched with the inner diameter of the upper section of the lower sealing sleeve to form an intermediate sealing cylindrical surface, and the outer diameter of the limit boss of the upper sealing sleeve is matched with the outer diameter of the lower sealing sleeve;
the diameter of the inner hole of the upper section of the lower thread seat is larger than that of the inner hole of the lower section, the shape and the size of the inner hole are matched with those of the outer limit step of the lower sealing sleeve, the lower sealing sleeve is clamped in the lower thread seat through the outer limit step, and the outer limit step surface of the lower sealing sleeve is matched with the inner hole of the lower thread seat to form a lower sealing plane; the diameter of the inner hole of the lower section of the upper thread seat is larger than that of the inner hole of the upper section, the shape and the size of the inner hole are matched with the upper end face of the limit boss of the upper sealing sleeve, the upper thread seat is sleeved outside the upper sealing sleeve through the limit boss, and the upper end face of the limit boss of the upper sealing sleeve is matched with the inner hole of the upper thread seat to form an upper sealing plane;
the height of the upper section of the lower thread seat is larger than that of the upper section of the lower sealing sleeve, so that the upper section of the lower thread seat is sleeved outside the limit boss of the lower sealing sleeve and the upper sealing sleeve at the same time;
the outer surface of the upper section of the lower thread seat is provided with external threads, the inner surface of the lower section of the upper thread seat is provided with internal threads, and the lower thread seat is fixedly connected with the upper thread seat through thread matching;
the upper gland is arranged above the upper thread seat, an upper compression ring which can extend into an inner hole of the upper thread seat to compress the upper end of the upper sealing sleeve is arranged in the middle of the upper gland, and the upper gland is fixedly connected with the upper thread seat through a bolt;
the lower gland is arranged below the lower thread seat, the middle part of the lower gland is provided with a lower compression ring which can extend into the inner hole of the lower thread seat to compress the lower end of the lower sealing sleeve, and the lower gland is fixedly connected with the lower thread seat through a bolt;
the upper end cable and the lower end cable are multicore cables respectively, a plurality of jacks, the number of which is consistent with that of the wire cores of the upper end cable and the lower end cable, are arranged in the middle joint of the cable core, the jacks are uniformly distributed along the circumferential direction, cable core spring insertion tubes are respectively arranged in each jack, and each wire core of the upper end cable and each wire core of the lower end cable are respectively inserted into and contacted with the upper end and the lower end of the upper cable core spring insertion tube at corresponding positions;
the upper end cable and the lower end cable are respectively three-core cables, three jacks are arranged in the middle joint of the cable core wire, the included angle between the three jacks is 120 degrees, a cable core wire spring insertion pipe is respectively arranged in each jack, and each wire core of the upper end cable and each wire core of the lower end cable are respectively inserted from the upper end and the lower end of the upper cable core wire spring insertion pipe at the corresponding positions and are in contact conduction;
the upper end and the lower end of the inner hole of the cable core wire spring insertion pipe are provided with inner conical surfaces, so that the upper end and the lower end of the inner hole of the cable core wire spring insertion pipe form a horn-shaped structure;
the cable core wire spring insertion pipe is made of beryllium bronze, the middle joint material of the cable core wire is made of polyethylene which is the same as the outer sheath material of the upper cable and the lower cable, and the upper sealing sleeve and the lower sealing sleeve are made of rubber;
the cable movable sealing joint for the submersible pump is characterized in that the cable core wires of the upper cable and the lower cable are mutually contacted and conducted through the cable core wire spring insertion pipe in the cable core wire middle joint, the lower gland, the lower thread seat, the lower sealing sleeve, the upper thread seat and the upper gland are coaxially arranged outside the cable core wire middle joint, and a plurality of sealing surfaces such as an upper cylindrical sealing surface, a middle sealing cylindrical surface, a lower cylindrical sealing surface, an upper sealing plane and a lower sealing plane are formed between the contact surfaces of the upper cylindrical sealing surface, the middle sealing cylindrical surface, the lower cylindrical sealing surface, the upper sealing plane and the lower sealing plane.
Drawings
FIG. 1 is a schematic plan view of a movable cable seal joint for a submersible pump according to an embodiment of the invention;
in fig. 1: 1. the lower screw 2, the spring pad 3, the lower gland 4, the lower thread seat 5, the lower sealing sleeve 6, the upper thread seat 7, the upper sealing sleeve 8, the upper gland 9, the spring pad 10, the upper screw 11, the upper end cable 12, the upper end cable core wire 13, the cable core wire middle joint 14, the cable core wire spring insertion tube 15, the lower end cable core wire 16, the thread 17, the lower end cable 18, the lower sealing plane 19, the middle sealing cylindrical surface 20, the upper sealing plane 21, the upper cylindrical sealing surface 22 and the lower cylindrical sealing surface.
Detailed Description
As shown in the figure, the cable movable sealing joint for the submersible pump comprises a lower gland 3, a lower thread seat 4, a lower sealing sleeve 5, an upper sealing sleeve 7, an upper thread seat 6 and an upper gland 8 which are coaxially arranged at the connecting part of an upper end cable 11 and a lower end cable 17; the upper sealing sleeve and the lower sealing sleeve are spliced and sleeved outside the connecting part of the upper end cable and the lower end cable through concave-convex matching of corresponding structures, and are mutually matched and pressed through the upper pressing cover, the lower pressing cover, the upper thread seat and the lower thread seat, so that the structure is simple, and the installation and the connection are convenient to operate.
Specifically:
a cylindrical cable core wire middle joint 13 is arranged between the upper end cable 11 and the lower end cable 17, a jack which is penetrated up and down is arranged at the position of the cable core wire middle joint 13 corresponding to the wire cores of the upper end cable 11 and the lower end cable 17, a cable core wire spring insertion pipe 14 is arranged in the jack, and the upper end cable core wire 12 and the lower end cable core wire 15 of the upper end cable 11 and the lower end cable 17 are inserted from the upper end and the lower end of the cable core wire spring insertion pipe 14 and are in contact conduction; the lower sealing sleeve 5 is a rotating body formed by rotating an upright Z-shaped geometric shape around an axle center, an inner hole formed by the lower sealing sleeve 5 is provided with an inner limit step, an outer circumferential surface of the lower sealing sleeve 5 is provided with an elastic sleeve with an outer limit step, the upper sealing sleeve 7 is a rotating body formed by rotating a transverse T-shaped geometric shape around the axle center, the upper sealing sleeve 7 is provided with an elastic sleeve with a circular limit boss on the outer circumferential surface, the upper sealing sleeve 7 and the lower sealing sleeve 5 are sleeved outside the cable core wire middle joint 13, the upper section of the lower sealing sleeve 5 is sleeved outside the lower section of the upper sealing sleeve 7, the inner diameters of the upper sealing sleeve and the lower section of the lower sealing sleeve are matched with the outer diameters of the upper end cable 11, the lower end cable 17 and the cable core wire middle joint 13, so that the outer surface of the upper sealing sleeve 7 is contacted with the inner surface of the upper thread seat to form an upper cylindrical sealing surface 21, the outer surface of the lower sealing sleeve 5 is contacted with the inner surface of the lower thread seat 4 to form a lower cylindrical sealing surface 22, the outer diameter of the lower section of the upper sealing sleeve 7 is matched with the inner diameter of the upper section of the lower sealing sleeve 5 to form a middle sealing cylindrical surface 19, and the outer diameter of the limit boss of the upper sealing sleeve is matched with the outer diameter of the lower sealing sleeve upper section; the upper sealing sleeve and the lower sealing sleeve are mutually spliced and sleeved outside the connecting part of the upper end cable and the lower end cable through the concave-convex matching of the limiting boss and the inner limiting step;
the diameter of the inner hole of the upper section of the lower thread seat 4 is larger than that of the inner hole of the lower section, the shape and the size of the inner hole are matched with those of the outer limit step of the lower sealing sleeve 5, the lower sealing sleeve 5 is clamped in the lower thread seat 4 through the outer limit step, and the outer limit step surface of the lower sealing sleeve 5 is matched with the inner hole of the lower thread seat 4 to form a lower sealing plane 18; the diameter of the inner hole of the lower section of the upper thread seat 6 is larger than that of the inner hole of the upper section, the shape and the size of the inner hole are matched with those of the upper end face of the limit boss of the upper seal sleeve 7, the upper thread seat 6 is sleeved outside the upper seal sleeve 7 through the limit boss, and the upper end face of the limit boss of the upper seal sleeve 7 is matched with the inner hole of the upper thread seat 6 to form an upper seal plane 20;
the upper cylindrical sealing surface 21, the middle sealing cylindrical surface 19, the lower cylindrical sealing surface 22, the upper sealing plane 20 and the lower sealing plane 18 are sequentially pressed and sealed from top to bottom to form a closed sealing path, water is prevented from leaking into the cable core wire middle joint 13, and the upper cable and the lower cable are in sealing connection, contact and conduction through the cable core wire middle joint 13, so that the underwater working environment can be adapted, and the underwater sealing device is safe and reliable.
The height of the upper section of the lower thread seat is larger than that of the upper section of the lower sealing sleeve, so that the upper section of the lower thread seat is sleeved outside the limiting boss of the lower sealing sleeve and the upper sealing sleeve at the same time, and the installation and connection operation are convenient.
The outer surface of the upper section of the lower thread seat is provided with external threads, the inner surface of the lower section of the upper thread seat is provided with internal threads, the lower thread seat is fixedly connected with the upper thread seat through threaded fit, the connection strength is high, and the sealing is reliable.
The upper gland is arranged above the upper thread seat, an upper compression ring which can extend into an inner hole of the upper thread seat to compress the upper end of the upper sealing sleeve is arranged in the middle of the upper gland, and the upper gland is fixedly connected with the upper thread seat through a bolt; the lower gland is arranged below the lower thread seat, the middle part of the lower gland is provided with a lower compression ring which can extend into the inner hole of the lower thread seat to compress the lower end of the lower sealing sleeve, and the lower gland is fixedly connected with the lower thread seat through a bolt; further improving the reliability of the sealing connection.
The upper end cable, the lower extreme cable are the multicore cable respectively, the inside a plurality of jacks that are provided with quantity and upper end cable, the sinle silk quantity of lower extreme cable unanimous of cable heart yearn intermediate head, a plurality of jacks are along circumferencial direction evenly distributed, be provided with cable heart yearn spring intubate in every jack respectively, upper end cable, every sinle silk of lower extreme cable inserts respectively from the upper and lower both ends of cable heart yearn spring intubate on the relevant position and contacts and switch on, can accomplish many sinle silk simultaneous connection through disposable plug connection and switch on, need not to connect the operation respectively to every sinle silk, save time, efficiency has been improved.
The upper cable and the lower cable are respectively three-core cables, three jacks are arranged in the middle joint of the cable core wires, the included angle between the three jacks is 120 degrees, a cable core wire spring insertion pipe is respectively arranged in each jack, and each wire core of the upper cable and each wire core of the lower cable are respectively inserted from the upper end and the lower end of the corresponding upper cable core wire spring insertion pipe and are in contact conduction, so that the cable core wire spring insertion pipe is balanced in stress and stable in performance.
The upper end and the lower end of the inner hole of the cable core wire spring insertion pipe are provided with inner conical surfaces, so that the upper end and the lower end of the inner hole of the cable core wire spring insertion pipe form a horn mouth structure, guiding is provided for plug connection of each cable core wire, and centering and alignment are not needed.
The cable core wire spring insertion tube is made of beryllium bronze, the middle joint material of the cable core wire is made of polyethylene which is the same as the outer sheath material of the upper cable and the lower cable, the upper sealing sleeve and the lower sealing sleeve are made of rubber, the connection strength is high, the conductivity is good, and the plug connection is reliable.
Elastic pads are arranged between the lower screw and the lower gland and between the upper screw and the upper gland, so that looseness is prevented, and the connection strength is high.
The cable movable sealing joint for the submersible pump is characterized in that the cable core wires of the upper cable and the lower cable are mutually contacted and conducted through the cable core wire spring insertion pipe in the cable core wire middle joint, the lower gland, the lower thread seat, the lower sealing sleeve, the upper thread seat and the upper gland are coaxially arranged outside the cable core wire middle joint, and a plurality of sealing surfaces such as an upper cylindrical sealing surface, a middle sealing cylindrical surface, a lower cylindrical sealing surface, an upper sealing plane and a lower sealing plane are formed between the contact surfaces of the upper cylindrical sealing surface, the middle sealing cylindrical surface, the lower cylindrical sealing surface, the upper sealing plane and the lower sealing plane.
The specific design idea is as follows:
the invention relates to a cable sealing movable joint structure of a submersible electric pump, and belongs to the technical field of cable sealing of submersible electric pumps.
The submersible pump is a fluid conveying machine with very wide application, is mainly used in industries such as metallurgy, electric power, light spinning, petroleum, chemical industry, chemical fertilizers, papermaking, environmental protection and the like, mainly comprises a well pump, a submersible sewage pump, a submersible mixed flow pump, a submersible axial flow pump and the like, is different from a common pump, is assembled by a motor driving the pump and a pump head into a whole and can be immersed into water to work together, thus, an electric power cable is required to be connected to an external electric network control box through the submersible motor, the electric network control box is always far from the submersible pump using field, a long electric power cable is required, the electric network control box is long from a few meters to hundreds of meters, at present, cable sealing is considered, the electric power cable of the submersible motor is generally used as a whole, the electric cable is transported together with the submersible pump, the cable is inconvenient to maintain in such a way, the cable is often damaged due to collision, the electric cable is not used, and great inconvenience is brought to the use of users, and for the use of the submersible motor, the long mode is required to be further technically improved and upgraded to meet the requirements of engineering and users.
The invention provides a cable sealing movable joint structure of a submersible electric pump, which aims at solving the problems that the whole cable of the conventional submersible electric pump is inconvenient to use and maintain, and the like.
The technical solution of the invention is as follows:
a cable sealing movable joint structure of a submersible electric pump is characterized in that a lower sealing sleeve 5 is arranged in a lower threaded seat 4, a lower sealing plane 18 is formed by the contact of the lower threaded seat 4 and the lower sealing sleeve 5, an upper sealing sleeve 7 is arranged in an upper threaded seat 6, an upper sealing plane 20 is formed by the contact of the upper threaded seat 6 and the upper sealing sleeve 7, the lower threaded seat 4 is screwed into the upper threaded seat 6 through threads 16, meanwhile, the lower sealing sleeve 5 is sleeved on the upper sealing sleeve 7 to form a middle sealing cylindrical surface 19, a cable core wire spring insertion tube 14 is pressed into a cable core wire middle joint 13, the cable core wire middle joint 13 is arranged in the middle position of the upper sealing sleeve 7, a lower sealing cover 3 is arranged on the lower threaded seat 4 through a screw 1 and a spring pad 2 to form a lower sealing cover 3 to press the lower sealing sleeve 5, an upper sealing cover 8 is arranged on the upper threaded seat 6 through a screw 10 and a spring pad 9, the upper gland 8 is formed to press the upper gland 7, the upper end cable 11 passes through the upper gland 8, the upper gland 7 inserts the upper end cable core wire 12 into the cable core wire spring insertion tube 14 on the cable core wire intermediate joint 13, similarly, the lower end cable 17 passes through the lower gland 3 and the lower gland 5 according to the same color code to insert the lower end cable core wire 15 into the cable core wire spring insertion tube 14 on the cable core wire intermediate joint 13, thus, the outer surface of the upper gland 7 is contacted with the inner surface of the upper thread seat to form an upper cylindrical sealing surface 21, the outer surface of the lower gland 5 is contacted with the inner surface of the lower thread seat 4 to form a lower cylindrical sealing surface 22, and simultaneously, the upper end cable core wire 12 in the upper end cable 11 is contacted with the lower end cable core wire 15 in the lower end cable 17 according to the same color code, and the lower end cable core wire spring insertion tube 14 on the cable core wire intermediate joint 13 are respectively contacted.
The invention has the beneficial effects that:
1) The cable in the cable sealing movable joint of the submerged electric pump is not required to be specially treated, and the cable sealing movable joint is reliable and safe in sealing by a mounting and dismounting method.
2) The operation is simple, the energy is saved, no pollution is caused, the movable joint is reliably connected, and the cost is low.
A cable sealing movable joint structure of a submersible electric pump is characterized in that a lower sealing sleeve 5 is arranged in a lower threaded seat 4, a lower sealing plane 18 is formed by the contact of the lower threaded seat 4 and the lower sealing sleeve 5, an upper sealing sleeve 7 is arranged in an upper threaded seat 6, an upper sealing plane 20 is formed by the contact of the upper threaded seat 6 and the upper sealing sleeve 7, the lower threaded seat 4 is screwed into the upper threaded seat 6 through threads 16, meanwhile, the lower sealing sleeve 5 is sleeved on the upper sealing sleeve 7 to form a middle sealing cylindrical surface 19, a cable core wire spring insertion tube 14 is pressed into a cable core wire middle joint 13, the cable core wire middle joint 13 is arranged in the middle position of the upper sealing sleeve 7, a lower sealing cover 3 is arranged on the lower threaded seat 4 through a screw 1 and a spring pad 2 to form a lower sealing cover 3 to press the lower sealing sleeve 5, an upper sealing cover 8 is arranged on the upper threaded seat 6 through a screw 10 and a spring pad 9, the upper gland 8 is formed to press the upper gland 7, the upper end cable 11 passes through the upper gland 8, the upper gland 7 inserts the upper end cable core wire 12 into the cable core wire spring insertion tube 14 on the cable core wire intermediate joint 13, similarly, the lower end cable 17 passes through the lower gland 3 and the lower gland 5 according to the same color code to insert the lower end cable core wire 15 into the cable core wire spring insertion tube 14 on the cable core wire intermediate joint 13, thus, the outer surface of the upper gland 7 is contacted with the inner surface of the upper thread seat to form an upper cylindrical sealing surface 21, the outer surface of the lower gland 5 is contacted with the inner surface of the lower thread seat 4 to form a lower cylindrical sealing surface 22, and simultaneously, the upper end cable core wire 12 in the upper end cable 11 is contacted with the lower end cable core wire 15 in the lower end cable 17 according to the same color code, and the lower end cable core wire spring insertion tube 14 on the cable core wire intermediate joint 13 are respectively contacted.
The working method is as follows:
screwing the lower thread seat 4 into the upper thread seat 6 through the thread 16, so that the lower thread seat 4 and the lower sealing sleeve 5 are tightly pressed on the lower sealing plane 18 to form a sealing effect; simultaneously, the upper thread seat 6 and the upper sealing sleeve 7 are tightly pressed on the upper sealing plane 20 to form a sealing effect, the lower sealing sleeve 5 and the upper sealing sleeve 7 are tightly pressed on the middle sealing cylindrical surface 19 to form a sealing effect, the lower gland 3 is tightly pressed on the lower sealing sleeve 5 by screwing the screw 1, the outer surface of the lower sealing sleeve 5 is tightly pressed on the inner surface of the lower thread seat 4 to form a sealing effect, and the elastic pad 2 plays a role in preventing looseness; similarly, the upper gland 8 is tightly pressed on the upper gland 7 by screwing the screw 10, so that the outer surface of the upper gland 7 is tightly pressed with the inner surface of the upper thread seat to form a sealing effect, thus forming a completely closed seal, ensuring that an upper end cable core wire 12 on an upper end cable 11 is tightly contacted with a lower end cable core wire 15 on a lower end cable 17 in a cable core wire spring insertion tube 14 in a cable core wire middle joint 13, never causing water inflow, ensuring that a cable sealing movable joint of the submersible pump is safe and reliable, and having no pollution to the outside.
Claims (5)
1. A cable activity sealing joint for immersible pump, its characterized in that: the device comprises a lower gland, a lower thread seat, a lower sealing sleeve, an upper thread seat and an upper gland which are coaxially arranged at the connection part of an upper end cable and a lower end cable; a cylindrical cable core wire middle joint is arranged between the upper end cable and the lower end cable, a jack which is penetrated up and down is arranged at a position of the cable core wire middle joint corresponding to the wire cores of the upper end cable and the lower end cable, a cable core wire spring insertion pipe is arranged in the jack, and the wire cores of the upper end cable and the lower end cable are inserted from the upper end and the lower end of the cable core wire spring insertion pipe and are in contact conduction; the lower sealing sleeve is a rotating body formed by rotating an upright Z-shaped geometric shape around an axle center, an inner hole formed by the lower sealing sleeve is provided with an inner limit step, an outer circumferential surface of the lower sealing sleeve is provided with an elastic sleeve with an outer limit step, the upper sealing sleeve is a rotating body formed by rotating a transverse T-shaped geometric shape around the axle center, the outer circumferential surface of the upper sealing sleeve is provided with an elastic sleeve with a circular limit boss, the upper sealing sleeve and the lower sealing sleeve are sleeved outside a cable core middle joint at the same time, the upper section of the lower sealing sleeve is sleeved outside the lower section of the upper sealing sleeve, the inner diameter of the lower section of the upper sealing sleeve is matched with the outer diameters of an upper cable, a lower cable and a cable core middle joint, the inner surface of the upper sealing sleeve is tightly contacted with the outer surface of the upper cable, the inner surface of the lower sealing sleeve is tightly contacted with the outer surface of the lower cable to form a lower cylindrical sealing surface, the outer diameter of the lower section of the upper sealing sleeve is matched with the inner diameter of the upper section of the lower sealing sleeve to form a middle sealing cylindrical surface, and the outer diameter of the limit boss of the upper sealing sleeve is matched with the outer diameter of the upper section of the lower sealing sleeve;
the diameter of the inner hole of the upper section of the lower thread seat is larger than that of the inner hole of the lower section, the shape and the size of the inner hole are matched with those of the outer limit step of the lower sealing sleeve, the lower sealing sleeve is clamped in the lower thread seat through the outer limit step, and the outer limit step surface of the lower sealing sleeve is matched with the inner hole of the lower thread seat to form a lower sealing plane; the diameter of the inner hole of the lower section of the upper thread seat is larger than that of the inner hole of the upper section, the shape and the size of the inner hole are matched with the upper end face of the limit boss of the upper sealing sleeve, the upper thread seat is sleeved outside the upper sealing sleeve through the limit boss, and the upper end face of the limit boss of the upper sealing sleeve is matched with the inner hole of the upper thread seat to form an upper sealing plane;
the height of the upper section of the lower thread seat is larger than that of the upper section of the lower sealing sleeve, so that the upper section of the lower thread seat is sleeved outside the limit boss of the lower sealing sleeve and the upper sealing sleeve at the same time;
the outer surface of the upper section of the lower thread seat is provided with external threads, the inner surface of the lower section of the upper thread seat is provided with internal threads, and the lower thread seat is fixedly connected with the upper thread seat through thread matching;
the upper gland is arranged above the upper thread seat, an upper compression ring which can extend into an inner hole of the upper thread seat to compress the upper end of the upper sealing sleeve is arranged in the middle of the upper gland, and the upper gland is fixedly connected with the upper thread seat through a bolt;
the lower gland is arranged below the lower thread seat, the middle part of the lower gland is provided with a lower compression ring which can extend into the inner hole of the lower thread seat to compress the lower end of the lower sealing sleeve, and the lower gland is fixedly connected with the lower thread seat through a bolt.
2. The cable gland connector for submersible pumps of claim 1, wherein: the cable core middle joint is characterized in that the upper cable and the lower cable are multicore cables respectively, a plurality of jacks, the number of which is consistent with that of the cable cores of the upper cable and the lower cable, are arranged in the cable core middle joint, the jacks are uniformly distributed along the circumferential direction, cable core spring insertion tubes are respectively arranged in each jack, and each cable core of the upper cable and each cable core of the lower cable are respectively inserted from the upper end and the lower end of the corresponding upper cable core spring insertion tube and are in contact conduction.
3. The cable gland connector for submersible pumps of claim 1, wherein: the upper cable and the lower cable are respectively three-core cables, three jacks are arranged in the cable core wire intermediate joint, the included angle between the three jacks is 120 degrees, a cable core wire spring insertion pipe is respectively arranged in each jack, and each wire core of the upper cable and each wire core of the lower cable are respectively inserted from the upper end and the lower end of the cable core wire spring insertion pipe at the corresponding positions and are in contact conduction.
4. The cable gland connector for submersible pumps of claim 1, wherein: the upper end and the lower end of the inner hole of the cable core wire spring insertion pipe are provided with inner conical surfaces, so that the upper end and the lower end of the inner hole of the cable core wire spring insertion pipe form a horn mouth structure.
5. The cable gland connector for submersible pumps of claim 1, wherein: the cable core wire spring insertion pipe is made of beryllium bronze, the middle joint material of the cable core wire is made of polyethylene which is the same as the outer sheath material of the upper cable and the lower cable, and the upper sealing sleeve and the lower sealing sleeve are made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910052258.9A CN109713832B (en) | 2019-01-21 | 2019-01-21 | Cable movable sealing joint for submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910052258.9A CN109713832B (en) | 2019-01-21 | 2019-01-21 | Cable movable sealing joint for submersible pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109713832A CN109713832A (en) | 2019-05-03 |
| CN109713832B true CN109713832B (en) | 2023-06-16 |
Family
ID=66261697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910052258.9A Active CN109713832B (en) | 2019-01-21 | 2019-01-21 | Cable movable sealing joint for submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109713832B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842880A (en) * | 2012-09-07 | 2012-12-26 | 江苏中兴水务有限公司 | Quadruple sealing structure of cable of submersible electric pump |
| CN202872313U (en) * | 2012-09-08 | 2013-04-10 | 江苏中兴水务有限公司 | Inner joint leakproof structure of submersible electric pump cable |
| CN204559302U (en) * | 2015-04-22 | 2015-08-12 | 合肥盛亚电机电泵有限公司 | A kind of cable sealing device of submersible pump |
-
2019
- 2019-01-21 CN CN201910052258.9A patent/CN109713832B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109713832A (en) | 2019-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100502186C (en) | A cable connection method and connection device for submersible electric pump well oil pipe | |
| CN211265803U (en) | Sealing electric connector | |
| CN201018253Y (en) | Cable abutting joint device for oil-submersible electric pump well oil conduit | |
| CN109713832B (en) | Cable movable sealing joint for submersible pump | |
| CN204517353U (en) | A kind of self sealss cable transition cover and cable entry | |
| CN200976478Y (en) | Cable plug quick changing connection box | |
| CN107039862B (en) | A kind of electrohydraulic mixed power composite cable input and output connector | |
| CN210607837U (en) | High-pressure water-tight electric connector | |
| CN216872359U (en) | Waterproof cable plug and socket for small submersible electric pump | |
| CN206195319U (en) | Submersible pump cable and signal line sealing device | |
| CN112769089B (en) | Stainless steel motor cable end | |
| CN107086517B (en) | Novel split type cable traversing device | |
| CN212648599U (en) | Full-sea deep photoelectric mixed watertight connector | |
| CN209329193U (en) | Cable connector | |
| CN109802352A (en) | A kind of hv cable termination tail pipe structure | |
| CN217607451U (en) | Armored single-seal explosion-proof cable stuffing box | |
| CN216162392U (en) | High-voltage cable shunting special-shaped joint | |
| CN210490418U (en) | Cable sealing device | |
| CN201242429Y (en) | Down-lead sealing device | |
| CN216530506U (en) | Cable connection sealer with dustproof construction | |
| CN220273301U (en) | Explosion-proof cable sealing device | |
| CN216517854U (en) | Electrical connection structure suitable for narrow space and high-temperature and high-pressure environment | |
| CN219393829U (en) | Waterproof structure of high-voltage connector | |
| CN217001701U (en) | Joint assembly for water injection, water production and oil production pipeline | |
| CN220527666U (en) | Double-horn-mouth FT type cable joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |