CN210326984U

CN210326984U - Grounding protection box with counter

Info

Publication number: CN210326984U
Application number: CN201921777637.6U
Authority: CN
Inventors: 林一轩
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-04-14
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a grounding protection box with a counter, which comprises a barrel-type outer cover and a T-shaped seat plate; three wire core clamping seats are uniformly distributed on a transverse plate on the front side of the T-shaped seat plate, and the upper ends of the three wire core clamping seats are respectively connected with the three protective layer protectors through first connecting plates; a wire core clamping seat is arranged on the vertical plate on the reverse side of the T-shaped seat plate, the upper end of the wire core clamping seat is connected with the ground plate through a second connecting plate, and the ground plate is sequentially connected with the rear ends of the three protective layer protectors; the inner wall of the cylindrical outer cover is also provided with a fixed seat board, the fixed seat board is connected with an electromagnetic induction counter, and the electromagnetic induction counter is connected with the three protective layer protectors; four wire inlet pipes communicated with the inner cavity are arranged on the outer wall of the drum type outer cover. The utility model discloses having optimized the circuit arrangement, having simplified the structure, conveniently having dismantled simultaneously and install and to the detection to the inside condition, also can realize the record to the number of times of switching on of cable sheath protector, monitoring system's operational aspect.

Description

Grounding protection box with counter

Technical Field

The utility model belongs to high tension cable ground connection guard box field specifically is a take counter ground connection guard box.

Background

With the rapid development of national economy, the demand for electric power is continuously rising. The construction and development of a high-power transmission network are very rapid, and the high-voltage single-core power cable is very popular in use. In order to ensure the safety and transmission efficiency of the power network, the high-voltage single-core power cable must be reliably grounded.

The shielding layer of the high-voltage cable (110 kV and above) can only be grounded in a single point, and if the cable sheath is damaged by chemical, mechanical and even mouse and insect pests and the like, the cable sheath is grounded in multiple points, the circulation of the metal sheath to the ground rises, so that potential safety hazards are caused. Once the cable grounding system is damaged, the voltage of the metal sheath is changed from the power frequency induction voltage in normal operation to the suspension voltage. The suspension voltage on the cable metal sheath can rise above the power frequency withstand voltage tolerance value of the cable outer sheath, so that the outer sheath can be punctured or the sheath protector can be burnt, and the main insulation of the cable can be punctured or other potential safety hazards can be caused more seriously. And cable operation management generally adopts the mode of manual cycle inspection, and can only discover when the circuit is overhauled, has serious potential safety hazard.

The existing grounding protection box on the market has the following defects: 1. the existing grounding protection box is of a box type structure, and has a large volume and an internal structure which is not compact to install; 2. the existing grounding protection box is inconvenient to detach and mount; 3. the existing grounding protection box has single performance, a plurality of counters without the conduction times of the protective layer protector are not provided, and the line fault detection is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at above problem, provide a take counter ground connection guard box, optimized the circuit arrangement, simplified the structure, convenient dismantlement simultaneously and installation and to the detection to the inside condition, also can realize the record to the sheath protector's of cable the number of times that switches on, monitoring system's operational aspect.

In order to realize the above purpose, the utility model adopts the technical scheme that: a grounding protection box with a counter is characterized by comprising a cylindrical outer cover and a T-shaped seat plate fixed on the inner wall of the cylindrical outer cover; the transverse plate on the front side of the T-shaped seat plate is provided with three wire core clamping seats which are uniformly distributed side by side, and the upper ends of the three wire core clamping seats are respectively connected with front-end support lugs of the three protective layer protectors through first connecting plates; a wire core clamping seat is arranged on the vertical plate on the reverse side of the T-shaped seat plate, the upper end of the wire core clamping seat is connected with a ground plate through a second connecting plate, and the ground plate is sequentially connected with rear end support lugs of the three protective layer protectors; the inner wall of the cylindrical outer cover is also provided with a fixed seat board, the fixed seat board is connected with an electromagnetic induction counter, and the electromagnetic induction counter is divided into three leads to be connected with the three protective layer protectors; four wire inlet pipes communicated with the inner cavity are arranged on the outer wall of the drum type outer cover, and the wire cores of the three-phase cable are fastened in the corresponding wire core clamping seats through adjusting bolts after passing through one wire inlet pipe respectively.

Furthermore, the wire core clamping seat is of a block-shaped structure, and installation screw holes are formed in the top and the bottom of the wire core clamping seat; a wire core hole is arranged at the right center of one side surface in a penetrating manner, an inserting plate groove with an opening at one end is also arranged at the upper end of the side surface in a penetrating manner, and a first connecting plate or a second connecting plate is correspondingly inserted into the inserting plate groove and fixed by passing through a mounting screw hole at the top part through a screw; and an adjusting bolt mounting hole communicated with the wire core hole is formed in the middle of the other side surface adjacent to the side surface, the adjusting bolt is arranged in the adjusting bolt mounting hole, and the wire core clamping seat penetrates through the bottom mounting screw hole through a screw to be fixed on the T-shaped seat plate.

Further, a circular box cover is arranged at the opening end of the drum-type outer cover, and the box cover is connected with a flange arranged at the opening end of the drum-type outer cover through a bolt; and a first sealing ring is arranged at the contact position of the box cover and the flange.

Furthermore, a through hole penetrates through the end face of the box cover, an external thread sleeve is arranged on the outer edge of the through hole, a sealing cover is in threaded fit with the external thread sleeve, organic glass is tightly pressed between the sealing cover and the external thread sleeve, and a second sealing ring is arranged at the contact position of the organic glass and the external thread sleeve; the sealing cover is provided with a peephole which can be seen through organic glass to the inside of the protection box.

Furthermore, a signal leading-out point is arranged on the protective layer protector and is connected with the circuit processing unit; the circuit processing unit is connected with the electromagnetic induction counter; the circuit processing unit comprises a rectifying circuit module, a pulse signal holding circuit module and a discharging circuit module which are connected in sequence.

The utility model has the advantages that:

1. the utility model discloses a structural style of bucket formula dustcoat has replaced original van-type structure, and the volume reduction, inner structure are compacter, improve its suitability greatly, have reduced the processing degree of difficulty moreover and have improved whole sealing performance.

2. The utility model discloses each part is detachable connection, easy to assemble and maintenance.

3. The utility model discloses a sinle silk holder adopts bayonet connection with the connecting plate, can fix a position fast, and the installation is easier.

4. The utility model discloses a condition of switching on of electromagnetic type response counter record cable sheath protector can carry out data-oriented management to the circuit.

5. The utility model discloses a three-phase cable realizes that the three-phase is total to case, all gets into from one side, installation convenient to use.

6. The utility model discloses set up the peephole device on the case lid, can observe the condition of the inside under the condition of not opening, improve holistic security.

Drawings

Fig. 1 is a front view of the front end of the case cover of the utility model.

Fig. 2 is a right side view of the inner structure of the cartridge-type housing of the present invention.

Fig. 3 is an enlarged view of a portion of fig. 2 according to the present invention.

Fig. 4 is a front view and a sectional view a-a of the core holder of the present invention.

Fig. 5 is a working schematic diagram of the counter of the present invention.

In the figure: 1. a barrel-type housing; 2. a sheath protector; 3. a first connecting plate; 4. a T-shaped seat plate; 5. fixing the seat plate; 6. a wire inlet pipe; 7. a second connecting plate; 8. a ground plate; 9. an electromagnetic induction counter; 10. a wire core clamping seat; 11. a box cover; 101. a board inserting groove; 102. mounting a screw hole; 103. a core hole; 104. adjusting bolt mounting holes; 105. adjusting the bolt; 106. a screw; 111. sealing the cover; 112. organic glass; 113. an external thread sleeve; 114. a second seal ring; 115. a peephole; 116. a through hole; 117. a first seal ring.

Detailed Description

In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.

As shown in fig. 1, the specific structure of the present invention is: a grounding protection box with a counter comprises a cylindrical housing 1, wherein a T-shaped seat plate 4 is arranged in the cylindrical housing 1, and two ends of the T-shaped seat plate 4 are connected with two lugs arranged on the inner wall of the cylindrical housing 1 through bolts; three wire core clamping seats 10 are uniformly distributed on a transverse plate on the front side (the end close to the box cover 11) of the T-shaped seat plate 4 side by side, and a longitudinal plate on the back side of the T-shaped seat plate 4 is provided with one wire core clamping seat 10; the upper ends of three wire core clamping seats 10 on the front surface of the T-shaped seat plate 4 are connected with one end of a first connecting plate 3 through screws 106, and the other end of the first connecting plate 3 is connected with a support lug arranged at the front end (the end close to the box cover 11) of the protective layer protector 2 through bolts; the three wire core clamping seats 10 are respectively connected with the three protective layer protectors 2 through first connecting plates 3, support lugs at the rear ends (11 ends of the back box covers) of the three protective layer protectors 2 are sequentially connected through grounding plates 8, the middles of the grounding plates 8 are also connected with one ends of second connecting plates 7 through bolts, and the other ends of the second connecting plates 7 are connected with the upper ends of the wire core clamping seats 10 arranged on the vertical plates on the reverse side of the T-shaped base plate 4 through screws 106; in order to facilitate the entering of the cable grounding wire, four wire inlet pipes 6 are arranged on the outer wall of the cylindrical outer cover, three phase wires and grounding wires of the three-phase cable can be respectively arranged in wire core holes 103 on corresponding wire core clamping seats 10 through the wire inlet pipes 6 and are clamped through side adjusting bolts 105 to realize the fixation of the wire cores, wherein the grounding wire is arranged in the single wire core clamping seat 10; the structure is simplified by the protection box with the structure, the structure is more compact, the size is smaller, and meanwhile, all the parts are detachably arranged, so that the protection box is convenient to mount and dismount.

As shown in fig. 4, the core clamp base 10 is a block structure, and the top and the bottom of the core clamp base are provided with mounting screw holes 102, so that the core clamp base 10 can be conveniently fixed on the T-shaped base plate 4; a wire core hole 103 is arranged at the right center of one side surface in a penetrating manner, an inserting plate groove 101 with an opening at one end is also arranged at the upper end of the side surface in a penetrating manner, the first connecting plate 3 or the second connecting plate 7 is correspondingly inserted into the inserting plate groove 101 and passes through an installation screw hole 102 at the top for fixing through a screw 106, and the rotation of the wire core clamping seat 10 can be avoided through the installation mode; an adjusting bolt mounting hole 104 communicated with the wire core hole 103 is formed in the middle of the other side surface adjacent to the side surface, the adjusting bolt 105 is arranged in the adjusting bolt mounting hole 104, and the wire core can be tightly pressed by adjusting the adjusting bolt 105 to prevent looseness; the wire core clamping seat 10 passes through the bottom mounting screw hole 102 through a screw 106 and is fixed on the T-shaped seat plate 4, and the whole structure is detachably mounted.

As shown in fig. 1, a fixed seat plate 5 is further arranged on the inner wall of the drum-type housing 1, an electromagnetic induction counter 9 is connected to the fixed seat plate 5, and the electromagnetic induction counter 9 is divided into three paths of leads to be connected with the three sheath protectors 2; four wire inlet pipes 6 communicated with the inner cavity are arranged on the outer wall of the drum type outer cover 1, and the wire cores of the three-phase grounding cable are fastened in the corresponding wire core clamping seats 10 through bolts after passing through one wire inlet pipe 6 respectively.

The recorded information of the conduction times of the sheath protector 2 of the cable is shown in fig. 5, the sheath protector 2 is a ZnO piezoresistor protective element, the sheath protector 2 is connected with the grounding device of the application, the sheath protector 2 is provided with a signal leading-out point, and the signal leading-out point is connected with a circuit processing unit; the circuit processing unit is connected with the electromagnetic induction counter 9; the circuit processing unit comprises a rectifying circuit module, a pulse signal holding circuit module and a discharging circuit module which are connected in sequence; the circuit processing unit obtains a conducting voltage signal of the sheath protector 2 through a signal leading-out point arranged on the sheath protector 2 of the cable, the conducting voltage signal is kept and converted into a pulse signal and then discharged, and the discharging voltage pulls a mechanical part in the electromagnetic induction counter 9 to push a gear to transmit through an electromagnetic induction principle to finish progressive counting. Wherein, the rectifier circuit module keeps and changes the switching-on voltage signal of sheath protector 2 through the rectifier bridge, thereby obtains the utility model discloses can realize the count of voltage range signal.

Preferably, as shown in fig. 2, a circular box cover 11 is arranged at the end of the cylindrical housing 1, a circular box cover 11 is arranged at the open end of the cylindrical housing 1, and the box cover 11 is connected with a flange arranged at the open end of the cylindrical housing 1 through bolts; a first sealing ring 117 is arranged at the contact position of the box cover 11 and the flange; the flange type connection has better sealing performance.

Preferably, as shown in fig. 3, a through hole 116 is penetratingly formed in the end face of the case cover 11, an external thread sleeve 113 is arranged on the outer edge of the through hole 116, a sealing cover 111 is screwed on the external thread sleeve 113, organic glass 112 is tightly pressed between the sealing cover 111 and the external thread sleeve 113, and a second sealing ring 114 is arranged at a contact position of the organic glass 112 and the external thread sleeve 113; the inside peephole 115 of guard box is seen to last being provided with permeable organic glass 112 of closing cap 111, and accessible peephole 115 sees the inside condition of cask formula dustcoat 1 through organic glass 112, and the trouble can in time be discover, improves structural security.

The utility model discloses during the specific use, at first pass through the bolt with 4 both ends of T type seat board and fix respectively on two lugs on 1 inner wall of cask formula guard shield, then cross the three sinle silk holder 10 of position installation in T type seat board 4 front-side correspondence

The upper end of the three wire core clamping seats 10 is inserted into the inserting plate groove 101 on the first connecting plate 3 and fixed through the screw 106, the other end of the first connecting plate 3 is fixed through the screw with the supporting lug at one end of the protective layer protector 2 through the screw, after the three protective layer protector 2 is installed, the supporting lugs at the other end of the three protective layer protector 2 are fixed on the grounding plate 8 through the screw sequentially, then the middle of the grounding plate 8 is connected with one end of the second connecting plate 7 through the screw, the other end of the second connecting plate 7 is inserted into the inserting plate groove 101 of the fourth wire core clamping seat 10 and fixed through the screw 106, the bottom of the fourth wire core clamping seat 10 is installed on a longitudinal plate on the reverse side of the T-shaped seat plate 4 through the screw 106, after the installation is completed, cable grounding wires are introduced from the wire inlet pipe 6 arranged on the outer wall of the barrel-type. Then, a lead is led out from a signal leading-out point on the protective layer protector 2 and is connected with the electromagnetic induction counter 9, and data can be read from the electromagnetic induction counter 9, so that operation managers can find line faults in time, deal with the line faults as soon as possible, eliminate hidden dangers and ensure the line safety; finally, the box cover 11 is installed, and installation is completed.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.

Claims

1. A grounding protection box with a counter is characterized by comprising a cylindrical outer cover (1) and a T-shaped seat plate (4) fixed on the inner wall of the cylindrical outer cover (1); the transverse plate on the front face of the T-shaped seat plate (4) is provided with three wire core clamping seats (10) which are uniformly distributed side by side, and the upper ends of the three wire core clamping seats (10) are respectively connected with front end lugs of the three protective layer protectors (2) through first connecting plates (3); a wire core clamping seat (10) is arranged on a vertical plate on the reverse side of the T-shaped seat plate (4), the upper end of the wire core clamping seat (10) is connected with an earth plate (8) through a second connecting plate (7), and the earth plate (8) is sequentially connected with rear end support lugs of the three protective layer protectors (2); the inner wall of the barrel-type outer cover (1) is also provided with a fixed seat board (5), the fixed seat board (5) is connected with an electromagnetic induction counter (9), and the electromagnetic induction counter (9) is divided into three paths of leads to be connected with the three sheath protectors (2); four wire inlet pipes (6) communicated with the inner cavity are arranged on the outer wall of the barrel type outer cover (1), and the wire cores of the three-phase cable are fastened in the corresponding wire core clamping seats (10) through adjusting bolts (105) after passing through one wire inlet pipe (6) respectively.

2. The grounding protection box with the counter according to claim 1, characterized in that the wire core clamping seat (10) is a block structure, and the top and the bottom of the wire core clamping seat are provided with mounting screw holes (102); a wire core hole (103) penetrates through the center of one side surface of the first connecting plate, an inserting plate groove (101) with an opening at one end is further formed in the upper end of the side surface of the first connecting plate, a first connecting plate (3) or a second connecting plate (7) is correspondingly inserted into the inserting plate groove (101), and the first connecting plate or the second connecting plate is fixed by a screw (106) penetrating through a mounting screw hole (102) at the top; an adjusting bolt mounting hole (104) communicated with the wire core hole (103) is formed in the middle of the other side face adjacent to the side face, the adjusting bolt (105) is arranged in the adjusting bolt mounting hole (104), and the wire core clamp seat (10) penetrates through the bottom mounting screw hole (102) through a screw (106) and is fixed on the T-shaped seat plate (4).

3. The grounding protection box with the counter according to claim 1, characterized in that a circular box cover (11) is arranged at the opening end of the drum-type housing (1), and the box cover (11) is connected with a flange arranged at the opening end of the drum-type housing (1) through bolts; a first sealing ring (117) is arranged at the contact position of the box cover (11) and the flange.

4. The grounding protection box with the counter according to claim 3, characterized in that a through hole (116) penetrates through the end face of the box cover (11), an external thread sleeve (113) is arranged on the outer edge of the through hole (116), a sealing cover (111) is in threaded fit with the external thread sleeve (113), organic glass (112) is compressed between the sealing cover (111) and the external thread sleeve (113), and a second sealing ring (114) is arranged at the contact position of the organic glass (112) and the external thread sleeve (113); the sealing cover (111) is provided with a peephole (115) which can be used for seeing the interior of the protection box through organic glass (112).

5. The grounding protection box with the counter according to claim 1, characterized in that a signal leading-out point is arranged on the sheath protector (2), and the signal leading-out point is connected with a circuit processing unit; the circuit processing unit is connected with the electromagnetic induction counter (9); the circuit processing unit comprises a rectifying circuit module, a pulse signal holding circuit module and a discharging circuit module which are connected in sequence.