Low-voltage digital display automatic nuclear phase device

Abstract

The invention discloses a low-voltage digital display automatic nuclear phase device, and relates to the technical field of power detection equipment. Comprising a phasing tester and a symmetrical fixing frame, the fixing frame is fixedly connected with three inverted-F-shaped frames which are distributed at intervals, the fixing frame is provided with connecting wires, the number of the connecting wires is consistent with that of the inverted-F-shaped frames, and the connecting wires are electrically connected with the phasing tester; and the connecting assembly is arranged below the phase checking device, when phase checking is needed to be carried out on the connecting sheet, the connecting assembly rapidly connects the connecting line and the connecting sheet, and when phase checking is not needed to be carried out on the connecting sheet, the internal structure of the phase checking device is not influenced by the voltage change in the connecting sheet. According to the invention, the nuclear phase equipment is installed at the specific position of the contact cabinet in advance, so that the position of the probe does not need to be manually adjusted during nuclear phase, the operation steps are greatly simplified, the operation time in the nuclear phase process is shortened, and the accuracy of the nuclear phase structure is improved through the fixed connection of the nuclear phase equipment and the contact cabinet.

Description

Technical Field

[0001] The invention relates to the technical field of electric power detection equipment, and in particular to a low-voltage digital display automatic phase checking device. Background Art

[0002] In the operation and maintenance of modern power systems, whether it is a low-voltage distribution cabinet, a high-voltage switch cabinet or a communication cabinet, when performing two-section power closing operations, ensuring the accuracy of the phase verification work is crucial to ensuring the safe and stable operation of the power system. Power closing refers to connecting two independent power systems through a common point so that they can supply power at the same time. In this process, the phase verification work is particularly important, because if the phases do not match, it may cause short circuits or other electrical faults, thus affecting the safety and stability of the system.

[0003] Phase refers to the position of AC power within a cycle. AC power usually has three phases (Phase A, Phase B, Phase C). The voltage waveforms of each phase are staggered in time. Phase checking is a technical means to check whether the phases of the two power systems are consistent before they are ready to be closed. If the phases of the two power systems do not match, huge impact current may be generated when closing the loop, resulting in short circuits, equipment damage, and even safety accidents.

[0004] However, the existing phase checking process of the communication cabinet is generally handled by at least three operators in collaboration, as follows: two operators respectively insert the probes of the phase checking equipment into the corresponding communication cabinets, and the remaining operators hold the phase checking equipment to watch, so as to know the phase of the communication cabinet in time. During the phase checking process, the two operators need to continuously switch the position of the probe of the phase checking equipment in the communication cabinet, so as to realize the phase checking of each phase in the communication cabinet. The above-mentioned phase checking process has many operating steps, complicated procedures and a high probability of erroneous operation. When an erroneous operation occurs, the phase checking result may be inaccurate at the least, and the operator may be electrocuted at the worst. Summary of the invention

[0005] In order to solve the problems mentioned in the above background technology, the purpose of the present invention is to provide a low-voltage digital display automatic phase checking device.

[0006] The technical solution of the present invention is a low-voltage digital display automatic phase checking device, comprising: A phase detector and a symmetrical fixing frame, wherein the fixing frame is fixedly connected with three inverted F-shaped frames distributed at intervals, and the fixing frame is provided with connecting wires having the same number as the inverted F-shaped frames, and the connecting wires are electrically connected to the phase detector; A connecting component is arranged below the phase checker. When the connecting piece needs to be phase checked, the connecting component quickly connects the connecting wire and the connecting piece. When the connecting piece does not need to be phase checked, the voltage change in the connecting piece will not affect the internal structure of the phase checker.

[0007] Furthermore, it is particularly preferred that the connection assembly comprises: Sliding frames, the number of which is the same as that of the inverted F-shaped frames, and which are slidably connected to the inverted F-shaped frames, wherein the sliding frames are provided with connecting frames, and the connecting frames are fixedly connected to the adjacent connecting lines; The first elastic telescopic rods are the same in number as the inverted F-shaped frames and are fixedly connected to the inverted F-shaped frames, and the telescopic ends of the first elastic telescopic rods are fixedly connected to the adjacent sliding frames; The number of wire sleeves is the same as that of the inverted F-shaped frame and they are fixedly connected to the inverted F-shaped frame. A wire core is slidably connected in the wire sleeves, and the wire core is fixedly connected to the sliding frame. Symmetrical fixed plates are respectively arranged on both sides of the phase detector, and the fixed plates are fixed with protective covers. The protective covers are fixed to the adjacent and spaced wire sleeves, and the fixed plates are connected to the spaced rockers, and the number of the rockers is consistent with that of the wire cores, and the rockers are fixed to the adjacent wire cores. The protective covers are provided with spaced slide grooves, and the number of the slide grooves is consistent with that of the rockers, and the slide grooves are used to limit the adjacent rockers.

[0008] In addition, it is particularly preferred that the slide groove consists of a V-shaped groove and a semicircular groove, and both the V-shaped groove and the semicircular groove of the slide groove are used to limit the adjacent rocker.

[0009] In addition, it is particularly preferred that it further comprises: The number of electrical connection components is the same as that of the inverted F-shaped frames, and they are respectively arranged on adjacent sliding frames. The electrical connection components are used to increase the stability of the electrical connection between the connecting wire and the adjacent connecting piece. The electrical connection components include: A fixed cylinder, fixedly connected to the sliding frame, wherein a first conductive member is fixedly connected inside the fixed cylinder, wherein the first conductive member is fixedly connected to a second conductive member, wherein the second conductive member is made of elastic material, wherein a spring is fixedly connected between the second conductive member and the adjacent first conductive member, and wherein the first conductive member and the second conductive member are both used to electrically connect the adjacent connecting wires with the adjacent connecting sheets; The emergency processing components are consistent in number with the fixing tubes and are respectively arranged on adjacent fixing tubes. The emergency processing components are used to actively disconnect the electrical connection between the connecting wire and the adjacent connecting piece.

[0010] In addition, it is particularly preferred that the emergency treatment component comprises: The fixed seats are arranged at intervals and are all fixedly connected to the adjacent fixed cylinders. The connecting frame is slidably connected to the adjacent sliding frame. The fixed seats are rotatably connected to a swing rod, and the connecting frame is fixedly connected to a limiting frame. A rotating frame is rotatably connected to the limiting frame, the sliding frame is fixedly connected with a second elastic telescopic rod, the telescopic end of the second elastic telescopic rod is fixedly connected to the adjacent connecting frame, and the swinging rods distributed at intervals are used to limit the adjacent rotating frames; The monitoring components are the same in number as the fixing tubes and are respectively arranged on adjacent fixing tubes for monitoring the heat of the first conductive member.

[0011] Furthermore, it is particularly preferred that the monitoring component comprises: The fixed shells are arranged at intervals and are fixedly connected to the adjacent fixed cylinders; The sliding seats are the same in number as the fixed shells and are respectively sealed and slidably connected to the fixed shells. A chamber is provided in the fixed cylinder, and the heated and expanded gas is stored in the chamber. The fixed shell is communicated with the chamber. A tension spring is fixedly connected between the sliding seat and the adjacent fixed cylinder. The swing rod is provided with a sliding groove, and the sliding seat is slidably connected to the sliding groove on the adjacent swing rod.

[0012] In addition, it is particularly preferred that the monitoring component further comprises: The sliding ring is slidably connected to the fixed cylinder, and a hinge rod is hinged between the swing rod and the adjacent sliding ring.

[0013] In addition, it is particularly preferred that the distance between the sliding seat and the adjacent fixed seat is greater than the distance between the fixed seat and the adjacent rotating frame, so as to enable the adjacent swing rods to swing easily.

[0014] In addition, it is particularly preferred that the rotating frame is provided with notches distributed at intervals, the number of notches on the rotating frame is consistent with the number of swing rods on the same fixed tube, and the width of the notches on the rotating frame is greater than the thickness of the adjacent swing rods, and the swing rods are in a 7-shape.

[0015] In addition, it is particularly preferred that the fixing tube is fixedly connected with a protective member, the side of the protective member away from the adjacent fixing tube is in contact with the adjacent connecting line, the protective member is used to cover the adjacent first conductive member, and an elastic band is fixedly connected inside the protective member.

[0016] The beneficial effects of the present invention are as follows: the present invention adopts the method of pre-installing the phase checking device at a specific position of the communication cabinet, so that there is no need to manually adjust the position of the probe during the phase checking, which greatly simplifies the operation steps, shortens the operation time during the phase checking process, and improves the accuracy of the phase checking structure by fixedly connecting the phase checking device with the communication cabinet; In the process of establishing the electrical connection between the nuclear phase equipment and the communication cabinet, the present invention adopts an elastic connection method to keep the connector of the nuclear phase equipment in a compressed state, thereby reducing poor contact caused by looseness, thereby extending the service life of the connection position of the connector and the communication cabinet; The present invention monitors the voltage of the connecting piece in real time, and automatically disconnects the electrical connection between the connecting piece and the connecting wire when it detects that the voltage of the connecting piece is too high, so as to prevent electrical breakdown of electrical components inside the nuclear phase device due to excessive voltage, thereby effectively protecting the safe operation of the equipment and extending its service life. After the connecting piece is disconnected from the connecting wire, the connecting piece is insulated to avoid the operator accidentally touching the exposed connecting piece during subsequent maintenance, which may cause an electric shock safety accident to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the nuclear phase device of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the connecting piece and the fixing frame of the present invention; Figure 4 It is a three-dimensional structural cross-sectional view of the inverted F-shaped frame of the present invention; Figure 5 is a three-dimensional structural cross-sectional view of the protective cover of the present invention; Figure 6 It is a three-dimensional structural cross-sectional view of the limiting frame of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating frame of the present invention; Figure 8 It is a three-dimensional structural cross-sectional view of the fixing cylinder of the present invention; Fig. 9 It is a three-dimensional structural cross-sectional view of the first conductive element of the present invention.

[0018] In the accompanying drawings: 1-connecting piece, 10-phase nucleator, 11-fixed frame, 12-inverted F-shaped frame, 13-connecting wire, 20-sliding frame, 21-connecting frame, 22-first elastic telescopic rod, 23-wire sleeve, 24-wire core, 25-fixed plate, 26-protective cover, 27-rocker, 28-slide groove, 30-fixed cylinder, 31-first conductive member, 32-second conductive member, 40-fixed shell, 41-sliding seat, 42-chamber, 43-sliding ring, 44-hinged rod, 50-fixed seat, 51-swinging rod, 52-limiting frame, 53-rotating frame, 54-second elastic telescopic rod, 60-protective member. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] In order to solve the problems of many operating steps, complicated procedures and high probability of erroneous operations in the existing phase checking process, the present invention adopts the method of preferentially installing the main body of the phase checking equipment at a specific position of the communication cabinet, so that the communication cabinet can establish a corresponding power connection with the present invention during installation, thereby saving the time for subsequent switching of the probe position of the phase checking equipment, thereby achieving the effect of saving operating procedures and improving the accuracy and efficiency of phase checking.

[0021] Embodiment 1: A low voltage digital display automatic phase checking device, such as Figure 1-Figure 6 As shown, it includes: a phase detector 10 and a symmetrical fixing frame 11, the fixing frame 11 is fixedly connected with three inverted F-shaped frames 12 distributed at intervals, and the fixing frame 11 is provided with connecting wires 13 with the same number as the inverted F-shaped frames 12, and the connecting wires 13 are electrically connected to the phase detector 10; a connecting component is arranged below the phase detector 10 (the positional relationship between the two is only used to reflect the position in the figure, and the actual positional relationship needs to be adjusted according to the actual situation). When the connecting piece 1 needs to be phase checked, the connecting component quickly connects the connecting wire 13 and the connecting piece 1. When the connecting piece 1 does not need to be phase checked, the voltage change in the connecting piece 1 will not affect the internal structure of the phase detector 10.

[0022] In the above scheme, a voltage identification module and a phase determination module (not shown in the figure) are installed in the phase detector 10. The voltage identification module is used to identify the voltage of the current transmitted by the connecting line 13, and the phase determination module is used to determine the phase in the connecting cabinet. The connecting line 13 and the connecting piece 1 are quickly connected through the connecting component, and the electrical connection between the connecting cabinet and the connecting line 13 can be established without the operator moving back and forth significantly.

[0023] like Figure 1-Figure 5As shown, the connection assembly includes: a sliding frame 20, which is the same number as the inverted F-shaped frame 12 and is slidably connected to the inverted F-shaped frame 12, and the sliding frame 20 is provided with a connecting frame 21, and the connecting frame 21 is fixedly connected to the adjacent connecting line 13; a first elastic telescopic rod 22, which is the same number as the inverted F-shaped frame 12 and is fixedly connected to the inverted F-shaped frame 12, and the telescopic end of the first elastic telescopic rod 22 is fixedly connected to the adjacent sliding frame 20; a wire sleeve 23, which is the same number as the inverted F-shaped frame 12 and is fixedly connected to the inverted F-shaped frame 12, and a wire core 24 is slidably connected in the wire sleeve 23, and the wire core 24 is fixedly connected to the sliding frame 20; a symmetrical fixing plate 25, They are respectively arranged on both sides of the nuclear phase detector 10, the fixing plate 25 is fixedly connected with a protective cover 26, the protective cover 26 is fixedly connected to the adjacent and spaced wire sleeves 23, the fixing plate 25 is ball-connected with spaced rockers 27, the number of rockers 27 is consistent with that of the wire cores 24, the rocker 27 is fixedly connected to the adjacent wire cores 24, the protective cover 26 is provided with spaced slide grooves 28, the number of slide grooves 28 is consistent with that of the rocker 27, the slide grooves 28 are used to limit the adjacent rocker 27, the slide grooves 28 are composed of a V-shaped groove and a semicircular groove, and the V-shaped groove and the semicircular groove of the slide groove 28 are both used to limit the adjacent rocker 27.

[0024] In the above scheme, when the wire core 24 moves along the adjacent wire sleeve 23, a contactless electrical connection between the connecting wire 13 and the adjacent connecting piece 1 can be achieved. In Example 1, the connecting wire 13 can be directly electrically connected to the connecting piece 1. When the rocker 27 contacts the semicircular groove in the slide groove 28, the rocker 27 is limited so that the rocker 27 does not move freely.

[0025] Working principle: After the communication cabinet is installed in the working area (the installation process of the device in two communication cabinets is taken as an example), the operator fixes the two fixing frames 11 of the device in the two communication cabinets respectively, so that the fixing frames 11 and the three adjacent connecting plates 1 in the communication cabinet are kept fixed, and then all the connecting lines 13 are arranged, and finally the phase detector 10 and the two fixing plates 25 are installed at the appropriate positions on the communication cabinet to complete the installation of the device.

[0026] When it is necessary to check the phase of two communication cabinets, the operator pushes the rocker 27 located on the left side of the left fixed plate 25 upwards, so that the rocker 27 swings along the adjacent fixed plate 25 and slides along the V-shaped groove in the adjacent slide groove 28. The rocker 27 stretches the adjacent wire core 24 during the swinging process along the adjacent fixed plate 25. The wire core 24 drives the sliding frame 20 located on the left side of the left fixed frame 11 to move downward, so that the sliding frame 20 drives the connecting frame 21 and the adjacent connecting line 13 and its accessory parts to move downward (the telescopic part of the adjacent first elastic telescopic rod 22 is stretched during the movement of the sliding frame 20).

[0027] When the rocker 27 swings into the semicircular groove of the adjacent slide 28, the operator releases the rocker 27. At this time, the semicircular groove of the slide 28 limits the front part of the rocker 27. At this time, the semicircular groove of the slide 28 limits the rocker 27 so that the rocker 27 will not swing at will.

[0028] After the rocker 27 swings until it contacts the semicircular groove of the adjacent slide groove 28, the connecting wire 13 on the left side of the left fixing frame 11 has contacted the adjacent connecting piece 1, and the connecting piece 1 transmits the power situation in the connection cabinet to the phase detector 10 through the adjacent connecting wire 13. The voltage in the connection cabinet is automatically identified by the voltage identification module in the phase detector 10, and the voltage signal is converted into a digital signal by the voltage identification module, so that the phase detector 10 displays the voltage in this connection cabinet.

[0029] After the electrical connection between the left connecting piece 1 on the left fixing frame 11 and the corresponding connecting wire 13 is completed (according to Figure 1 and Figure 2 It can be concluded that this connecting piece 1 is the left A), the operator connects the connecting wire 13 corresponding to the right part and the connecting piece 1, and the connection method is consistent with the above. After completing the connection between the right connecting wire 13 and the corresponding connecting piece 1 (this connecting piece 1 is the right A), when the phases of the left connecting piece 1 and the right connecting piece 1 are consistent, the voltage identification module transmits the signals of the two to the phase determination module in the phase detector 10, and the signals transmitted by the two are analyzed by the phase determination module. When the phase sequence and frequency of the two are inconsistent, the two cannot be closed. On the contrary, when the phase sequence of the two are consistent and the voltage angle deviation is within the allowable range, it is determined that the power supplies of the two can be closed.

[0030] When the phase check of left A and right A is completed, the operator pushes the right rocker 27 upwards and makes the rocker 27 disengage from the contact with the semicircular groove on the adjacent slide 28, and then the operator pulls the right rocker 27 downwards along the V-shaped groove on the adjacent slide 28, so that the right rocker 27 no longer pulls the adjacent wire core 24. At this time, the wire core 24 no longer pulls the adjacent sliding frame 20, and the sliding frame 20 drives the adjacent connecting wire 13 to move upward and reset through the connecting frame 21, so that the connecting wire 13 is no longer electrically connected to the adjacent connecting piece 1, thereby achieving the disconnection of the two, avoiding that in the process of non-core phase, the connecting piece 1 still transmits the power signal to the core phase device 10 through the adjacent connecting wire 13 (in the non-core phase, if the connecting piece 1 transmits the power signal to the core phase device 10 through the adjacent connecting wire 13, when the voltage in the contact cabinet is too large, the power signal will also be transmitted to the core phase device 10 through the adjacent connecting wire 13, thereby causing the electronic components in the core phase device 10 to be electrically broken down).

[0031] When the phase of left A and right A is checked, the operator disconnects the electrical connection between right A and the phase checker 10 as described above, and creates an electrical connection between right B and the phase checker 10 (the method of creating the electrical connection is consistent with the above), so as to facilitate the operator to check the phase of left A and right B. When the operator completes the phase check operation of the two contact cabinets, the electrical connection between the connecting line 13 and the adjacent connecting piece 1 can be disconnected, and the disconnection process is repeated as described above.

[0032] When the operator checks the phase in the connection cabinet, if the voltage of the connection cabinet is too large, it is easy to cause damage to the existing phase checking equipment, for example, electrical breakdown. The excessive voltage will break down the electronic components in the phase checking equipment, causing damage to the electronic components, thereby making it impossible to complete the phase checking of the connection cabinet. The present invention adopts a method of real-time monitoring of the voltage in the connection cabinet. When the voltage in the connection cabinet is too large, the electrical connection between the connection cabinet and the phase checking equipment is actively disconnected to avoid the risk of electrical breakdown inside the phase checking equipment due to excessive voltage.

[0033] Embodiment 2: Based on embodiment 1, Figure 4 and Figure 6-Figure 9 As shown, it also includes: an electrical connection component, which is the same in number as the inverted F-shaped frame 12 and is respectively arranged on adjacent sliding frames 20, and the electrical connection component is used to increase the stability of the electrical connection between the connecting line 13 and the adjacent connecting piece 1. The electrical connection component includes: a fixed cylinder 30, which is fixed to the sliding frame 20, and a first conductive member 31 is fixedly connected in the fixed cylinder 30, and the first conductive member 31 is fixedly connected to the second conductive member 32. The second conductive member 32 is made of elastic material, and a spring is fixedly connected between the second conductive member 32 and the adjacent first conductive member 31. The first conductive member 31 and the second conductive member 32 are both used to electrically connect the adjacent connecting line 13 with the adjacent connecting piece 1; an emergency processing component, which is the same in number as the fixed cylinder 30 and is respectively arranged on adjacent fixed cylinders 30, and the emergency processing component is used to actively disconnect the electrical connection between the connecting line 13 and the adjacent connecting piece 1.

[0034] In the above scheme, in this embodiment, since the fixing tube 30, the first conductive member 31 and the second conductive member 32 are added, the connecting wire 13 will establish an electrical connection with the adjacent connecting piece 1 through the first conductive member 31 and the second conductive member 32. The lower end of the connecting wire 13 is fixed with a conductive shell, and the conductive shell at the lower end of the connecting wire 13 is electrically connected to the adjacent first conductive member 31. The materials specified by the first conductive member 31 and the second conductive member 32 are for the purpose of realizing the conduction of electricity, and this material is only for example and not for limitation.

[0035] like Figure 6-Figure 8As shown, the emergency handling component includes: fixed seats 50 distributed at intervals, each of which is fixedly connected to adjacent fixed cylinders 30, a connecting frame 21 is slidably connected to an adjacent sliding frame 20, the fixed seat 50 is rotatably connected to a swing rod 51, and the connecting frame 21 is fixedly connected to a limiting frame 52; a rotating frame 53 is rotatably connected to the limiting frame 52, the sliding frame 20 is fixedly connected to a second elastic telescopic rod 54, the telescopic end of the second elastic telescopic rod 54 is fixedly connected to the adjacent connecting frame 21, and the swing rods 51 distributed at intervals are used to limit the adjacent rotating frames 53; monitoring components, the number of which is consistent with that of the fixed cylinders 30, and are respectively arranged on adjacent fixed cylinders 30, for monitoring the heat of the first conductive member 31.

[0036] In the above scheme, there are two fixed seats 50 distributed at equal intervals in the circumferential direction, which are used to stably fix the adjacent rotating frames 53. The upper side of the rotating frame 53 is initially in contact with the lower side surface of the upper part of the adjacent swing rod 51. For this purpose, the rotating frame 53 is limited, and the telescopic part of the second elastic telescopic rod 54 is initially in a stretched state. During the rotation of the two adjacent swing rods 51 along the adjacent fixed seats 50, the limitation of the adjacent rotating frame 53 is gradually released. The rotating frame 53 is reset and moved under the action of the adjacent second elastic telescopic rod 54 in the stretched state, thereby actively disconnecting the electrical connection between the connecting line 13 and the adjacent first conductive member 31.

[0037] like Figure 6-Figure 8 As shown, the monitoring assembly includes: fixed shells 40 distributed at intervals, all of which are fixedly connected to adjacent fixed cylinders 30; sliding seats 41, which are the same in number as the fixed shells 40 and are respectively sealed and slidably connected to the fixed shells 40, a chamber 42 is provided in the fixed cylinder 30, and the chamber 42 stores the heat-expanded gas, the fixed shell 40 is communicated with the chamber 42, a tension spring is fixedly connected between the sliding seat 41 and the adjacent fixed cylinder 30, a swing rod 51 is provided with a sliding groove, the sliding seat 41 is slidably connected to the sliding groove on the adjacent swing rod 51, and the distance between the sliding seat 41 and the adjacent fixed seat 50 is greater than the distance between the fixed seat 50 and the adjacent fixed seat 50. The distance between adjacent rotating frames 53 is used to enable adjacent swinging rods 51 to swing easily, thereby forming a lever effort-saving mechanism. The rotating frame 53 is provided with notches distributed at intervals. The number of notches on the rotating frame 53 is consistent with the number of swinging rods 51 on the same fixed cylinder 30, and the width of the notches on the rotating frame 53 is greater than the thickness of the adjacent swinging rods 51. The swinging rod 51 is in a 7-shape, and the vertical portion of the swinging rod 51 is parallel to the central axis of the fixed cylinder 30. The inclined portion of the swinging rod 51 is inclined to the horizontal plane, which is used to prevent the rotating frame 53 from sliding freely after the swinging rod 51 contacts the adjacent rotating frame 53.

[0038] In the above scheme, the heated and expanded gas is helium, and the fixed tube 30 is made of ceramic material, which is used to transfer heat but is not conductive. The heat of the first conductive member 31 is increased and then transferred to the fixed tube 30, thereby increasing the pressure of the heated and expanded gas in the chamber 42, so that the sliding seat 41 can be squeezed by the heated and expanded gas in the chamber 42.

[0039] like Figure 8 As shown, the monitoring assembly further includes: a sliding ring 43 slidably connected to the fixed cylinder 30 , and a hinge rod 44 is hinged between the swing rod 51 and the adjacent sliding ring 43 .

[0040] In the above solution, the adjacent swinging rods 51 can swing synchronously by the swinging of the two hinged rods 44 relative to the sliding ring 43 .

[0041] like Figure 6-Figure 8 As shown, the fixing tube 30 is fixedly connected with a protective member 60 , and the side of the protective member 60 away from the adjacent fixing tube 30 is in contact with the adjacent connecting line 13 . The protective member 60 is used to cover the adjacent first conductive member 31 , and an elastic band is fixedly connected inside the protective member 60 .

[0042] In the above solution, when the upper side of the protective member 60 is in the initial state, that is, when the lower side of the connecting line 13 contacts the upper side of the protective member 60 , the elastic band on the upper side of the protective member 60 is in an expanded state.

[0043] Working principle: During the process of checking the phase of the contact cabinet, the operator operates the rocker 27 to swing upward. At this time, the adjacent wire core 24 is stretched, and the sliding frame 20 immediately drives the fixed cylinder 30, the connecting frame 21, the second conductive member 32, the connecting wire 13 and the accessory parts to move downward. During the process of the rocker 27 moving upward along the V-shaped groove in the adjacent slide slot 28, the second conductive member 32 will contact the adjacent connecting piece 1. When the rocker 27 continues to swing upward, the wire core 24 continues to pull the sliding frame 20. At this time, the sliding frame 20 will continue to move downward and squeeze the adjacent second conductive member 32 and the spring (the two are deformed after being squeezed). When the rocker 27 moves to the upper semicircular groove of the slide slot 28, the limiting of the rocker 27 is completed, and at this time, the second conductive member 32 and the adjacent spring are in a compressed state, thereby effectively preventing the second conductive member 32 and the adjacent connecting piece 1 from loosening, reducing poor contact caused by loosening, and extending the service life of the second conductive member 32 and the connecting piece 1 while improving the connection stability.

[0044] In the process of checking the phase of the contact cabinet, the connecting piece 1 transmits the power signal to the phase checker 10 through the second conductive member 32, the first conductive member 31, and the connecting line 13, so that the phase checker 10 can check the phase of the connecting piece 1. When the voltage transmitted by the connecting piece 1 is too large, the first conductive member 31 will continue to heat up and transfer the heat to the chamber 42, so that the gas in the chamber 42 expands and squeezes the adjacent sliding seat 41 (the adjacent tension spring is stretched during the movement of the sliding seat 41). After the sliding seat 41 is squeezed, it squeezes the adjacent swing rod 51, so that the swing rod 51 swings along the adjacent fixed seat 50 (the sliding groove on the swing rod 51 moves relative to the adjacent sliding seat 41 during the swinging process). During the swinging process of the swing rod 51, the sliding ring 43 is driven to move upward through the adjacent hinged rod 44, so that the sliding ring 43 can drive the adjacent swing rod 51 to swing through another hinged rod 44, thereby achieving the effect of simultaneous movement of the two swing rods 51.

[0045] When the swing rod 51 swings to release the limit on the adjacent rotating frame 53, the telescopic part of the second elastic telescopic rod 54 adjacent to the rotating frame 53 drives the adjacent connecting frame 21 to move upward. During the movement of the connecting frame 21, the rotating frame 53 and the adjacent connecting line 13 are driven upward by the limiting frame 52, so that the connecting line 13 and the conductive shell thereon are separated from the contact with the adjacent first conductive member 31. Through the above steps, the effect of disconnecting the electrical connection between the first conductive member 31 and the adjacent connecting line 13 is achieved after the temperature of the first conductive member 31 rises.

[0046] After the connecting wire 13 is disconnected from the electrical connection with the adjacent first conductive member 31, the elastic band on the upper side of the protective member 60 contracts, causing the upper side of the protective member 60 to contract and cover the upper side of the adjacent first conductive member 31, thereby achieving insulation of the first conductive member 31 and preventing the first conductive member 31 from being exposed during subsequent maintenance by the operator, thereby preventing the operator from accidentally touching it.

[0047] When the voltage transmitted by the connecting piece 1 is stable, the temperature of the first conductive member 31 decreases, and the gas in the chamber 42 stops expanding and no longer squeezes the adjacent sliding seat 41. The sliding seat 41 moves and resets under the action of the adjacent tension spring, and the sliding seat 41 drives the adjacent swinging rod 51 to move. The swinging rod 51 drives the adjacent sliding ring 43 to reset and move through the hinge rod 44, so that the swinging rod 51 swings to Figure 8 status in .

[0048] When it is necessary to re-establish the electrical connection between the connecting line 13 and the adjacent first conductive member 31, the operator rotates the rotating frame 53 90° so that the middle parts of the two notches of the rotating frame 53 are respectively located on the same vertical line as the middle parts of the adjacent swinging rods 51. The staff then pulls the limit frame 52 downward, and the limit frame 52 drives the connecting frame 21 to slide in the adjacent sliding frame 20 (the connecting frame 21 pulls the telescopic part of the adjacent second elastic telescopic rod 54 during the movement), so that the connecting frame 21 drives the connecting line 13 to move downward. During this process, the operator opens the upper side of the protective member 60 to facilitate the docking of the connecting line 13 and the adjacent first conductive member 31 (after completing the docking of the connecting line 13 and the adjacent first conductive member 31, the operator can release the protective member 60).

[0049] When the rotating frame 53 moves to the point where its upper side is on the same horizontal line as the upper lower side of the adjacent swing rod 51, the operator rotates the rotating frame 53 90° in the opposite direction so that the notch of the rotating frame 53 no longer corresponds to the position of the adjacent swing rod 51, and then the operator loosens the connecting frame 21. At this time, the rotating frame 53 contacts the adjacent swing rod 51 to limit the rotating frame 53.

[0050] When the rotating frame 53 is limited by the adjacent swing rod 51, the connecting wire 13 has re-established electrical connection with the adjacent first conductive member 31. At this time, the protective member 60 is Figure 8 In the state, through the above description, the electrical connection between the connecting line 13 and the adjacent first conductive member 31 is restored.

[0051] Although the present invention is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications may be made to the present invention without departing from the principles and spirit of the present invention. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, rather than to limit the present invention.

Claims

1. A low-voltage digital display automatic phase checking device, characterized in that it includes: A phase detector (10) and a symmetrical fixing frame (11), wherein the fixing frame (11) is fixedly connected with three inverted F-shaped frames (12) distributed at intervals, and the fixing frame (11) is provided with connecting wires (13) whose number is the same as the number of the inverted F-shaped frames (12), and the connecting wires (13) are electrically connected to the phase detector (10); A connection component is arranged below the phase checker (10); when the connection piece (1) needs to be phase checked, the connection component quickly connects the connection line (13) and the connection piece (1); when the connection piece (1) does not need to be phase checked, voltage changes in the connection piece (1) will not affect the internal structure of the phase checker (10).

2. A low-voltage digital display automatic phase checking device according to claim 1, characterized in that: The connection component comprises: The sliding frames (20) are the same in number as the inverted F-shaped frames (12) and are slidably connected to the inverted F-shaped frames (12); the sliding frames (20) are provided with connecting frames (21), and the connecting frames (21) are fixedly connected to the adjacent connecting lines (13); The first elastic telescopic rods (22) are the same in number as the inverted F-shaped frame (12) and are fixedly connected to the inverted F-shaped frame (12); the telescopic ends of the first elastic telescopic rods (22) are fixedly connected to the adjacent sliding frame (20); The number of wire sleeves (23) is the same as that of the inverted F-shaped frame (12), and they are fixedly connected to the inverted F-shaped frame (12); a wire core (24) is slidably connected inside the wire sleeve (23), and the wire core (24) is fixedly connected to the sliding frame (20); Symmetrical fixing plates (25) are respectively arranged on both sides of the phase detector (10); the fixing plates (25) are fixedly connected with protective covers (26); the protective covers (26) are fixedly connected with adjacent and spaced wire sleeves (23); the fixing plates (25) are ball-connected with spaced rockers (27); the number of the rockers (27) is the same as that of the wire cores (24); the rockers (27) are fixedly connected with adjacent wire cores (24); the protective covers (26) are provided with spaced slide grooves (28); the number of the slide grooves (28) is the same as that of the rockers (27); the slide grooves (28) are used to limit the adjacent rockers (27).

3. A low-voltage digital display automatic phase checking device according to claim 2, characterized in that: The slide groove (28) is composed of a V-shaped groove and a semicircular groove, and both the V-shaped groove and the semicircular groove of the slide groove (28) are used to limit the adjacent rocker (27).

4. A low voltage digital display automatic phase checking device according to claim 2, characterized in that: include: The electrical connection components are the same in number as the inverted F-shaped frames (12) and are respectively arranged on adjacent sliding frames (20). The electrical connection components are used to increase the stability of the electrical connection between the connecting wire (13) and the adjacent connecting piece (1). The electrical connection components include: A fixed cylinder (30) is fixedly connected to the sliding frame (20), a first conductive member (31) is fixedly connected inside the fixed cylinder (30), a second conductive member (32) is fixedly connected to the first conductive member (31), the second conductive member (32) is made of elastic material, a spring is fixedly connected between the second conductive member (32) and the adjacent first conductive member (31), and the first conductive member (31) and the second conductive member (32) are both used to electrically connect the adjacent connecting wires (13) with the adjacent connecting sheets (1); The number of emergency processing components is the same as that of the fixing cylinders (30), and they are respectively arranged on adjacent fixing cylinders (30), and the emergency processing components are used to actively disconnect the electrical connection between the connecting wire (13) and the adjacent connecting piece (1).

5. A low-voltage digital display automatic phase checking device according to claim 4, characterized in that: The emergency handling components include: The fixed seats (50) are arranged at intervals and are all fixedly connected to the adjacent fixed cylinders (30); the connecting frame (21) is slidably connected to the adjacent sliding frame (20); the fixed seats (50) are rotatably connected to a swing rod (51); and the connecting frame (21) is fixedly connected to a limiting frame (52); A rotating frame (53) is rotatably connected to the limiting frame (52); the sliding frame (20) is fixedly connected with a second elastic telescopic rod (54); the telescopic end of the second elastic telescopic rod (54) is fixedly connected to the adjacent connecting frame (21); and the swinging rods (51) arranged at intervals are used to limit the adjacent rotating frames (53); The monitoring components are the same in number as the fixing cylinders (30) and are respectively arranged on adjacent fixing cylinders (30) and are used to monitor the heat of the first conductive member (31).

6. A low-voltage digital display automatic phase checking device according to claim 5, characterized in that: The monitoring components include: The fixed shells (40) are arranged at intervals and are all fixedly connected to the adjacent fixed cylinders (30); The number of sliding seats (41) is the same as that of the fixed shells (40), and they are respectively sealed and slidably connected to the fixed shells (40); a chamber (42) is provided in the fixed cylinder (30), and a gas that expands due to heat is stored in the chamber (42); the fixed shell (40) is communicated with the chamber (42); a tension spring is fixedly connected between the sliding seat (41) and the adjacent fixed cylinder (30); the swing rod (51) is provided with a sliding groove; the sliding seat (41) is slidably connected to the sliding groove on the adjacent swing rod (51).

7. A low voltage digital display automatic phase checking device according to claim 6, characterized in that: The monitoring component also includes: The sliding ring (43) is slidably connected to the fixed cylinder (30), and a hinge rod (44) is hingedly connected between the swing rod (51) and the adjacent sliding ring (43).

8. A low voltage digital display automatic phase checking device according to claim 6, characterized in that: The distance between the sliding seat (41) and the adjacent fixed seat (50) is greater than the distance between the fixed seat (50) and the adjacent rotating frame (53), so that the adjacent swinging rods (51) can swing easily.

9. A low voltage digital display automatic phase checking device according to claim 8, characterized in that: The rotating frame (53) is provided with notches distributed at intervals, the number of notches on the rotating frame (53) is consistent with the number of swing rods (51) on the same fixed cylinder (30), the width of the notches on the rotating frame (53) is greater than the thickness of adjacent swing rods (51), and the swing rods (51) are in a 7-shape.

10. A low voltage digital display automatic phase checking device according to claim 6, characterized in that: The fixing tube (30) is fixedly connected to a protective member (60), and a side of the protective member (60) away from the adjacent fixing tube (30) is in contact with the adjacent connecting line (13). The protective member (60) is used to cover the adjacent first conductive member (31), and an elastic band is fixedly connected inside the protective member (60).

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