CN208470871U - A kind of fault detection system and its terminal box of belt feeder tandem protective device - Google Patents

Abstract

The utility model discloses the fault detection systems and its terminal box of a kind of belt feeder tandem protective device; it is used to control the relay KA that belt feeder opens/stops including a firewire L, a zero curve N, a common wire M and one, has been sequentially connected in series several quick detection function blocks on the circuit composed by the coil of firewire L, zero curve N, common wire M and relay KA；Each quickly detection function block is composed in series by a short-circuit detecting grid and an open circuit detection grid；The short-circuit detecting grid is by a circuit breaker Q F_nWith a short-circuit detecting indicator light HL in parallel_2n‑1Composition；The open circuit detection grid is by a protective device S_nWith an open circuit detection indicator light HL in parallel_2nComposition；The utility model structure is simple, ease for use is good, realizes to the rapid investigation of the tandem protective device failure of belt conveyer and emergency processing, improves the operation ratio of equipment.

Description

A kind of fault detection system and its terminal box of belt feeder tandem protective device

Technical field

The utility model relates to low voltage electrical equipment technical field, especially a kind of event of belt feeder tandem protective device Hinder detection system and its terminal box.

Background technique

Currently, belt conveyer is play an important role in automated production as material transfer equipment, in belt-conveying Protection in machine operational process usually has safety guyrope switch protection, deviation switch protection, slipping device protection, putty switch to protect Shield, this 5 kinds of anti-tear switch protection, wherein safety guyrope switch and deviation switch are installed along belt feeder machine frame at two sides, and safety is drawn Cord switch should install one group every≤30 meters of distances, and deviation switch is in addition to other than head, tail respectively install one group, every 100 meters Distance should install one group, these protective switchs carry out concatenated mode one by one using normally closed point and installed.

The typical wiring form of belt feeder tandem protective device as shown in Figure 1, firewire L from control room to live belt Machine, with each protective device (S₁~S_n) normally-closed contact connect, then by common wire M return to control room and relay Coil one end of device KA connects, and the coil other end of KA is connect with zero curve N, forms a current loop, and control room be lean on after Whether the state of electric appliance KA has protective device movement to distinguish live.

However, since belt conveyer is too long, the number of protective switch is excessive in practical work process, once occur Open circuit failure either short-circuit failure, these failures are difficult to find out by naked eyes at the first time, and quickly find fault point Position, this will bring comparable difficulty to the investigation of failure, and in the case where producing emergency rating, can not also provide for above-mentioned failure One quickly and effectively processing method, this causes very big influence to production.

Summary of the invention

Open circuit is occurring for the tandem protective device that the purpose of this utility model seeks to solve current belt transporter When failure or short-circuit failure, exist to be difficult to check rapidly and be out of order a little, and propose one quickly and effectively processing method ask Topic, provides the fault detection system and its terminal box of a kind of belt feeder tandem protective device thus.

The concrete scheme of the utility model is: a kind of fault detection system of belt feeder tandem protective device, including one Root firewire L, a zero curve N, a common wire M and one are used to control the relay KA that belt feeder opens/stops, it is characterized in that: Several are sequentially connected in series in series loop composed by firewire L, the coil of common wire M and relay KA and zero curve N quickly to examine Brake block, wherein quick detection function block is connected between firewire L and common wire M；Each quickly detection function block is by one A short-circuit detecting grid and an open circuit detection grid are composed in series；The short-circuit detecting grid is by a circuit breaker Q F_nWith one The short-circuit detecting indicator light HL of a parallel connection_2n-1Composition, wherein n is the natural number more than or equal to 1；The open circuit detection grid is by one A protective device S_nWith an open circuit detection indicator light HL in parallel_2nComposition, wherein n is the natural number more than or equal to 1, and is protected Protection unit S_nIt is in closed state under normal conditions.

Quick detection function block described in the utility model is sequentially connected in series on circuit with two for one group, and every group fast The fast detection function block every group protective device positioned opposite with belt feeder rack two sides are arranged in is corresponding.

Terminal box described in the utility model has box body, the quick detection function block there are two dresses in box body, this Two quick detection function blocks protective device S1, the protective device S2 positioned opposite with belt feeder rack two sides are arranged in are opposite It answers；One of them quick detection function block is by circuit breaker Q F₁, circuit breaker Q F₁Parallel connection short circuit detect indicator light HL1, protective device The parallel connection open circuit detection indicator light HL2 composition of S1 and protective device S1, and it is corresponding at the initial and end both ends of the quick detection function block Equipped with electrically conductive socket S11 and electrically conductive socket S12；Another quick detection function block is by circuit breaker Q F₂, circuit breaker Q F₂Parallel connection it is short The parallel connection open circuit detection indicator light HL4 composition of road detection indicator light HL3, protective device S2 and protective device S2, and it is quick at this The initial and end both ends of detection function block are correspondingly provided with electrically conductive socket S21 and electrically conductive socket S22；The firewire L is equipped with electrically conductive socket L1 and electrically conductive socket L2；It is additionally provided in box body and is respectively used to switching electrically conductive socket L1, electrically conductive socket L2 and common wire M and two The connecting terminal of a protective device, and on box side wall be equipped at least one waterproof Ge Lan, and each indicator light with it is each Electrically conductive socket is all set on the panel of box body.

Electrically conductive socket S11 described in the utility model, electrically conductive socket S12, electrically conductive socket S21, electrically conductive socket S22, conduction Socket L1 and electrically conductive socket L2 is in three rows, two column distribution on the panel of box body, and wherein electrically conductive socket S11, S22 is located at first row, Electrically conductive socket L1, L2 are located at second row, and electrically conductive socket S21, S12 are located at third row, and electrically conductive socket S11, S22 and conduction are inserted Seat S21, S12 are arranged in a manner of crossed ectopic, and the row, column spacing between each electrically conductive socket is equal；It is each Electrically conductive socket is round pin receptacle, and directionless restricted；The short-circuit detecting indicator light HL1, open circuit detection indicator light HL2, short Road detection indicator light HL3 and open circuit detection indicator light HL4 are successively arranged side by side on the panel of box body.

Connecting terminal described in the utility model is public for transferring respectively by the grid L1 for the electrically conductive socket L1 that transfers Grid M1, M2 of line M, for the grid L2 for the electrically conductive socket L2 that transfers, grid S1a, S1b and use for the protective device S1 that transfers In grid S2a, S2b of switching protective device S2, successively assembled side-by-side is integrated, and wherein grid M1, M2 phase is shorted；The open circuit Device QF₁With circuit breaker Q F₂It is successively mounted side by side in the right side of connecting terminal；There are four the waterproof Ge Lan installations.

The utility model has the advantage that

(1) the utility model structure is simple, ingenious in design, convenient for being changed on the basis of existing serial protective device Dress, convenient for quickly detecting the short-circuit failure and open circuit failure of tandem protective device, and indicates abort situation；

(2) the utility model is in the case where producing emergency, by the terminal box of fault detection system, convenient for quickly by event Barrier point is cut off from circuit, and this not only lowers the difficulty of fault detection, processing, also improve the operation ratio of equipment；

(3) the utility model operation is convenient, ease for use is good, is simply trained general operation personnel, so that it may grasp The application method of the terminal box is disposed without professional.

Detailed description of the invention

Fig. 1 is the circuit diagram of belt feeder tandem protective device in the prior art；

Fig. 2 is the circuit diagram of fault detection system in the utility model；

Fig. 3 is the planar structure schematic diagram of terminal box in the utility model；

Fig. 4 is the elementary diagram that line terminals are inscribed in terminal box in the utility model；

Fig. 5 is the equivalent electrical schematic diagram in the utility model in terminal box；

Fig. 6 is that the first connection that quick detection function block A, B is electrically connected by U-shaped plug in terminal box is tied Structure schematic diagram；

Fig. 7 is that quick detection function block A, B is tied by second of connection that U-shaped plug is electrically connected in terminal box Structure schematic diagram；

When Fig. 8 is that quick detection function block B breaks down in terminal box, quick detection function block A2 is independently accessed failure The structural schematic diagram of detection system；

When Fig. 9 is that quick detection function block A breaks down in terminal box, quick detection function block B3 is independently accessed failure The structural schematic diagram of detection system；

When Figure 10 is that quick detection function block A, B break down in terminal box, terminal box is in fault detection system Attachment structure schematic diagram.

In figure: 1-box body, 2-quick detection function block A, 3-quick detection function block B, 4-connecting terminals, 5-is anti- Water Ge Lan, 6-panels.

Specific embodiment

Embodiment 1

Referring to fig. 2, a kind of fault detection system of belt feeder tandem protective device, it includes a firewire L, one piece zero Line N, a common wire M and one are each for controlling the relay KA and several quick detection function blocks that belt feeder opens/stops Quick detection function block is sequentially connected in series between firewire L and common wire M, one end of the coil of common wire M connection relay KA, after The other end of the coil of electric appliance KA connects zero curve N；Each quickly detection function block is disconnected by a short-circuit detecting grid and one Road detection grid is composed in series；The short-circuit detecting grid is by a circuit breaker Q F_nWith a short-circuit detecting indicator light in parallel HL_2n-1Composition, wherein n is the natural number more than or equal to 1；The open circuit detection grid is by a protective device S_nWith a parallel connection Open circuit detection indicator light HL_2nComposition, wherein n is natural number more than or equal to 1, and protective device S_nIt is in and closes under normal conditions Conjunction state, as shown in Figure 2, in each quick detection function block, each circuit breaker Q F_nIt is series at protective device S_nFront side.

Quick detection function block described in the present embodiment is sequentially connected in series on circuit with two for one group, and every group quick The detection function block every group protective device positioned opposite with belt feeder rack two sides are arranged in is corresponding.

Fault detection system working principle described in the present embodiment is as follows:

(1) it is directed to the short-circuit failure of belt feeder tandem protective device: when " ground connection " event occurs for belt feeder protective device When barrier, in protective device S_nThe concatenated circuit breaker Q F in front end_nDisjunction is protected because flowing through excessive short circuit current, electric current will select The short-circuit detecting indicator light HL in parallel from it_2n-1It flows through, is formed into a loop with " grounding point ", short-circuit detecting indicator light HL_2n-1Same time point It is bright, indicate that short-circuit failure occurs for the position.It should be strongly noted that being connected on " grounding point " for short-circuit failure Breaker before can all protect disjunction because of short circuit current, and the position of last disjunction is only true " ground connection " abort situation.

(2) it is directed to the open circuit failure of belt feeder tandem protective device: as belt feeder protective device S_nOccur " open circuit " When failure, electric current will be selected from its open circuit detection indicator light HL in parallel_2nIt flows through, is returned to by common wire M, relay KA coil Zero curve N, forming circuit, open circuit detection indicator light HL_2nIt lights, indicates that open circuit failure occurs for the position.

Embodiment 2

During Project Realization, the layout of fault detection system since control room, grasp by control cable laying to scene Make in case, each protective device cable of belt feeder is laid from field operation box along rack two sides again, and belt feeder rack two Side every group of protective device positioned opposite one terminal box of corresponding configuration.

Referring to Fig. 3-5, the present embodiment is based on embodiment 1, and terminal box described in the present embodiment has box body 1, in box body 1 Equipped with quick detection function block A2 and quick detection function block B3, the two quick detection function blocks and setting are in belt feeder rack Two sides protective device S1 positioned opposite, protective device S2 are corresponding；Quick detection function block A2 is by circuit breaker Q F₁, breaker QF₁Parallel connection short circuit detection indicator light HL1, protective device S1 and protective device S1 parallel connection open circuit detection indicator light HL2 composition, And electrically conductive socket S11 and electrically conductive socket S12 are correspondingly provided at the initial and end both ends of the quick detection function block；Quick detection function Block B3 is by circuit breaker Q F₂, circuit breaker Q F₂Parallel connection short circuit detection indicator light HL3, protective device S2 and protective device S2 parallel connection Open circuit detection indicator light HL4 composition, and be correspondingly provided with electrically conductive socket S21 at the initial and end both ends of the quick detection function block and lead Electrical socket S22；The firewire L is equipped with electrically conductive socket L1 and electrically conductive socket L2；It is additionally provided with to be respectively used to transfer in box body 1 and lead Electrical socket L1, electrically conductive socket L2 and common wire M and the connecting terminal of two protective devices 4, and four are equipped on 1 side wall of box body A waterproof Ge Lan 5, and each indicator light and each electrically conductive socket are all set on the panel 6 of box body 1.

Electrically conductive socket S11 described in the present embodiment, electrically conductive socket S12, electrically conductive socket S21, electrically conductive socket S22, conduction are inserted Seat L1 and electrically conductive socket L2 is in three rows, two column distribution on the panel of box body, and wherein electrically conductive socket S11, S22 is located at first row, leads Electrical socket L1, L2 are located at second row, and electrically conductive socket S21, S12 are located at third row, and electrically conductive socket S11, S22 and electrically conductive socket S21, S12 are arranged in a manner of crossed ectopic, and the row, column spacing between each electrically conductive socket is equal；It is each to lead Electrical socket is round pin receptacle, and directionless restricted；The short-circuit detecting indicator light HL1, open circuit detection indicator light HL2, short circuit Detection indicator light HL3 and open circuit detection indicator light HL4 are successively arranged side by side on the panel of box body.

Connecting terminal described in the present embodiment is respectively by the grid L1 for the electrically conductive socket L1 that transfers, for common wire of transferring Grid M1, M2 of M, for the grid L2 for the electrically conductive socket L2 that transfers, for the protective device S1 that transfers grid S1a, S1b and be used for Successively assembled side-by-side is integrated grid S2a, S2b of switching protective device S2, and wherein grid M1, M2 phase is shorted；The breaker QF₁With circuit breaker Q F₂It is successively mounted side by side in the right side of connecting terminal.

The patching operations of terminal box described in the present embodiment are as follows:

(1) in specific wiring, L1 and M1 are the controlling cables to come from prime, and firewire meets L1, and common wire meets M1；L2 and M2 is destined to the connecting terminal of next stage wiring, and L2 starts to exchange fire line, and M2 connects common wire；If the terminal box is in caudal end, from upper The firewire in two cores control cable that level-one comes meets L1, and common wire must then be connected to L2.

For the terminal box described in the present embodiment, S1a, S1b terminal of terminal box should access belt feeder wherein side The both ends of protective device normally-closed contact S1；S2a, S2b terminal should access the protective device normally-closed contact S2's of the belt feeder other side Both ends.

Referring to Fig. 6, Fig. 7, the first string of quick detection function block A2 and quick detection function block B3 is disclosed in Fig. 6 Couple line chart, it is specific as follows: three U-shaped plugs are respectively adopted and successively realize the short circuit of electrically conductive socket L1 and electrically conductive socket S11, reality The short circuit of existing electrically conductive socket S12 and electrically conductive socket S21, realize the short circuit of electrically conductive socket S22 and electrically conductive socket L2.Although in Fig. 7 In disclose the connection different from Fig. 6, but the mode of connection of Fig. 7 realizes quick detection function block A2 and quickly detection function The differential concatenation of energy block B3, thus the effect of both modes of connection is equivalent.

According to the mode of connection of Fig. 6 and Fig. 7, " ground connection " failure occurs for the protective device S1 in quick detection function block A2 When, circuit breaker Q F1 disjunction, short-circuit detecting indicator light HL1 is lighted, conversely, short-circuit detecting indicator light HL1 extinguishes when normal；It is protecting When open circuit failure occurs for protection unit S1, open circuit detection indicator light HL2 is lighted, conversely, open circuit detection indicator light HL2 is put out when normal It goes out；Similarly, when " ground connection " failure occurs for the protective device S2 in quick detection function block B3, short-circuit detecting indicator light HL3 point It is bright, conversely, short-circuit detecting indicator light HL3 extinguishes when normal, when open circuit failure occurs for protective device S2, open circuit detection instruction Lamp HL4 is lighted, conversely, open circuit detection indicator light HL4 extinguishes when normal.

In the present embodiment, when in the case where producing emergency, protective device breaks down, corresponding emergency processing mode is such as Under:

(1) open circuit failure occurs for the protective device S1 corresponding to the quick detection function block A2, then the terminal box is disconnected Road detection indicator light HL2 indicator light is lighted, when producing emergency rating, quick detection function block A2 and quick detection function block B3 Short circuit form may be selected to be operated such as attached drawing 9, fault point can be cut off from circuit；Conversely, if any quick detection function Open circuit failure occurs for protective device S2 corresponding to block B3, then the open circuit detection indicator light HL4 indicator light of the terminal box is lighted, When producing emergency rating, the short circuit form of quick detection function block A2 and quick detection function block B3 may be selected as attached drawing 8 into Row operation, can cut off fault point from circuit；If open circuit failure all occurs for the protective device of two sides, then the terminal box is disconnected Road detection indicator light HL2 and open circuit detection indicator light HL4 indicator light are all lighted, when producing emergency rating, quick detection function The short circuit form of block A2 and quick detection function block B3 may be selected to be operated such as Figure 10, can cut off fault point from circuit.

(2) short-circuit failure occurs for the protective device S1 corresponding to the quick detection function block A2, then the terminal box is short Road detection indicator light HL1 indicator light is lighted, when producing emergency rating, quick detection function block A2 and quick detection function block B3 Short circuit form may be selected to be operated such as attached drawing 9, fault point can be cut off from circuit；Conversely, if any quick detection function Short-circuit failure occurs for protective device S2 corresponding to block B3, then the short-circuit detecting indicator light HL3 indicator light of the terminal box is lighted, When producing emergency rating, the short circuit form of " quickly processing mould group " may be selected to be operated such as attached drawing 8, can be by fault point from returning It is cut off in road；If short-circuit failure all occurs for the protective device of two sides, then the short-circuit detecting indicator light HL1 of the terminal box and short circuit Detection indicator light HL3 indicator light is all lighted, when producing emergency rating, quick detection function block A2 and quick detection function block B3 Short circuit form may be selected to be operated such as Figure 10, fault point can be cut off from circuit.

(3) it need to specialize, in short-circuit process fault detection, because short circuit current is excessive, before fault point Breaker have the possibility of trip protection, therefore occur such case in practice, should first restore the confession for controlling power supply All terminal boxes are patrolled in electricity, inspection, are actual short fault point close to the place that caudal end short-circuit detecting indicator light is lighted, are answered in production When anxious state, fault point is cut off from electric loop according to aforesaid operations, and close other all breakers.

(4) it need to separately specialize, emergency processing mode does not only allow the case where interrupting for a long time in rhythm of production Lower taken interim measure must replace failure facility in the production intermittent time.

Claims (5)

1. a kind of fault detection system of belt feeder tandem protective device, including a firewire L, a zero curve N, one it is public Line M and one are for controlling the relay KA that belt feeder opens/stops, it is characterized in that: in the line of firewire L, common wire M and relay KA Several quick detection function blocks have been sequentially connected in series in series loop composed by circle and zero curve N, wherein quick detection function block It is connected between firewire L and common wire M；Each quickly detection function block is by a short-circuit detecting grid and an open circuit detection Grid is composed in series；The short-circuit detecting grid is by a circuit breaker Q F_nWith a short-circuit detecting indicator light HL in parallel_2n-1Group At wherein n is the natural number more than or equal to 1；The open circuit detection grid is by a protective device S_nWith an open circuit in parallel Detect indicator light HL_2nComposition, wherein n is natural number more than or equal to 1, and protective device S_nIt is in closed form under normal conditions State.

2. the fault detection system of a kind of belt feeder tandem protective device according to claim 1, it is characterized in that: described Quick detection function block is sequentially connected in series on circuit with two for one group, and every group of quick detection function block and setting are in belt Machine rack two sides every group of protective device positioned opposite is corresponding.

3. special based on a kind of terminal box of the fault detection system of belt feeder tandem protective device described in claim 1 Sign is: the terminal box has box body, and there are two the quick detection function block, the two quick detection functions for dress in box body The block protective device S1 positioned opposite with belt feeder rack two sides are arranged in, protective device S2 are corresponding；One of them is quickly examined Brake block is by circuit breaker Q F₁, circuit breaker Q F₁Parallel connection short circuit detection indicator light HL1, protective device S1 and protective device S1 Open circuit detection indicator light HL2 composition in parallel, and electrically conductive socket S11 is correspondingly provided at the initial and end both ends of the quick detection function block With electrically conductive socket S12；Another quick detection function block is by circuit breaker Q F₂, circuit breaker Q F₂Parallel connection short circuit detect indicator light The parallel connection open circuit detection indicator light HL4 composition of HL3, protective device S2 and protective device S2, and in the quick detection function block Initial and end both ends are correspondingly provided with electrically conductive socket S21 and electrically conductive socket S22；The firewire L is equipped with electrically conductive socket L1 and electrically conductive socket L2；It is additionally provided in box body and is respectively used to switching electrically conductive socket L1, electrically conductive socket L2 and common wire M and two protective devices Connecting terminal, and at least one waterproof Ge Lan is housed on box side wall, and each indicator light is all provided with each electrically conductive socket It is placed on the panel of box body.

4. a kind of terminal box of the fault detection system of belt feeder tandem protective device according to claim 3, special Sign is: the electrically conductive socket S11, electrically conductive socket S12, electrically conductive socket S21, electrically conductive socket S22, electrically conductive socket L1 and electrically conductive socket L2 is in three rows, two column distribution on the panel of box body, and wherein electrically conductive socket S11, S22 is located at first row, and electrically conductive socket L1, L2 In second row, electrically conductive socket S21, S12 be located at third row, and electrically conductive socket S11, S22 with electrically conductive socket S21, S12 to intersect The mode of dystopy is arranged, and the row, column spacing between each electrically conductive socket is equal；Each electrically conductive socket is circular hole Socket, and it is directionless restricted；The short-circuit detecting indicator light HL1, open circuit detection indicator light HL2, short-circuit detecting indicator light HL3 and Open circuit detection indicator light HL4 is successively arranged side by side on the panel of box body.

5. a kind of terminal box of the fault detection system of belt feeder tandem protective device according to claim 3, special Sign is: the connecting terminal is respectively by the grid L1 for the electrically conductive socket L1 that transfers, for grid M1, M2 of the common wire M that transfers, For the grid L2 for the electrically conductive socket L2 that transfers, for grid S1a, S1b of the protective device S1 that transfers and for protective device of transferring Successively assembled side-by-side is integrated grid S2a, S2b of S2, and wherein grid M1, M2 phase is shorted；The circuit breaker Q F₁With circuit breaker Q F₂ It is successively mounted side by side in the right side of connecting terminal；There are four the waterproof Ge Lan installations.