CN220964321U - Safety interlocking circuit for preventing capacitor from being burst to hurt people - Google Patents
Safety interlocking circuit for preventing capacitor from being burst to hurt people Download PDFInfo
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- CN220964321U CN220964321U CN202323022467.XU CN202323022467U CN220964321U CN 220964321 U CN220964321 U CN 220964321U CN 202323022467 U CN202323022467 U CN 202323022467U CN 220964321 U CN220964321 U CN 220964321U
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- 239000003990 capacitor Substances 0.000 title claims abstract description 25
- 238000004880 explosion Methods 0.000 claims abstract description 6
- 230000001939 inductive effect Effects 0.000 claims description 43
- 208000013883 Blast injury Diseases 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 3
- 208000005374 Poisoning Diseases 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 231100000572 poisoning Toxicity 0.000 abstract description 2
- 230000000607 poisoning effect Effects 0.000 abstract description 2
- 230000006698 induction Effects 0.000 description 9
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of high-voltage capacitor control equipment, and relates to a safety interlocking circuit for preventing a capacitor from exploding and injuring a person, which comprises a circuit breaker ZKK, wherein the circuit breaker ZKK is connected with a positive electrode +KM and a negative electrode +KM of a power supply, the circuit breaker ZKK is connected with a normally open switch of an intermediate relay ZJ1, the normally open switch of the intermediate relay ZJ1 and the normally open switch of the intermediate relay ZJ2 are connected in parallel and then connected with the circuit breaker QF1, and the circuit breaker QF1 is connected with the rear end of a circuit breaker ZKK of the negative electrode +KM of the power supply. The utility model is suitable for situations such as explosion risk, gas leakage poisoning risk, ignition risk, liquid splashing risk and other situations that accident is easy to hurt on-site personnel and the on-site personnel are likely to occur in the scene during switching, and the remote control closing is closed when people exist; when no person is present, the switching-on function is opened, and the injury to field personnel in case of explosion accident is avoided.
Description
Technical Field
The utility model belongs to the technical field of high-voltage capacitor control equipment, and particularly relates to a safety interlocking circuit for preventing a capacitor from being burst to hurt people.
Background
The switching of the high-voltage capacitor is risky, and people are required to avoid the switching, and the switching is controlled by using a device control loop.
The operation overvoltage generated during switching of the high-voltage capacitor can cause explosion accidents of the capacitor in severe cases, and explosion injury accidents caused by the operation overvoltage of the capacitor in industry occur. When in operation on site, the personal safety of site operators cannot be fundamentally ensured; in the case of remote operation, the safety of the operator is ensured, but in this case, the capacitor room is also at risk if other people are present. Thus, a safety interlock circuit is presented that prevents a capacitor from exploding to hurt a person.
Disclosure of utility model
The utility model aims to provide a safety interlocking circuit for preventing a capacitor from exploding and injuring people, which has a safety interlocking protection function and solves the problem that the prior art has people in a capacitor room and is at risk of exploding and injuring people due to overvoltage operation of the capacitor.
In order to achieve the above purpose, the utility model adopts the technical scheme that the utility model provides a safety interlocking circuit for preventing a capacitor from exploding and injuring a person, the safety interlocking circuit comprises a breaker ZKK, the breaker ZKK is connected to a normally open switch of an intermediate relay ZJ1, the normally open switch of the intermediate relay ZJ1 and a normally open switch of the intermediate relay ZJ2 are connected in parallel and then connected to the breaker QF1, the front end of the normally open switch of the intermediate relay ZJ2 is connected with a changeover switch KK, the rear side of the changeover switch KK is divided into two branches, one branch is connected with a controller KZQ1, a button SB1, the series connection rear end of an intermediate relay ZJ1 coil is connected to the rear end of the breaker QF1, the other branch is connected with a normally closed contact of an inductive switch KG1, a normally closed contact of the inductive switch KG2, the rear end of the inductive switch KG3, the rear end of the inductive switch KG4 contact is connected to a controller KZQ2, the front end of the controller KQ 2 is connected with a changeover switch QF2 coil, the changeover switch QF2 is connected with the front end of the indicator lamp, the indicator lamp is connected with the front end of the indicator lamp is connected with the normally open switch QF2, and the front end of the indicator lamp is connected with the normally open switch 1.
Preferably, the circuit breaker ZKK is a two-way linkage switch, which is respectively connected to two ends of the positive electrode +KM and the negative electrode-KM of the power supply.
Preferably, the controller KZQ2 is designed for each 2 contacts, and contacts at the front end of the controller KZQ2 are all connected to the rear end of the inductive switch KG 4.
Preferably, the inductive switch KG1, the inductive switch KG2, the inductive switch KG3 and the inductive switch KG4 are respectively arranged on the front side, the rear side, the left side, the right side and the left side of the capacitive cabinet.
Preferably, the change-over switch KK includes 4 contacts, which are a contact ①, a contact ②, a contact ③ and a contact ④, respectively, and has three gear positions, namely a gear, a 0 gear and a B gear.
Preferably, the a gear of the switch KK is an on-site gear, the contact ① and the contact ② of the switch KK are connected, the 0 gear of the switch KK is a neutral gear, the switch KK is disconnected, the B gear of the switch KK is a remote gear, and the contact ③ of the switch KK is connected with the contact ④.
Compared with the prior art, the utility model has the advantages and positive effects that,
1. The utility model is suitable for situations such as explosion risk, gas leakage poisoning risk, ignition risk, liquid splashing risk and other situations that accident is easy to hurt on-site personnel and the on-site personnel are likely to occur in the scene during switching, and the remote control closing is closed when people exist; when no person is present, the switching-on function is opened, so that the injury to field personnel in case of explosion accident is avoided;
2. The human body induction switch contacts are connected into the control loop to realize electric interlocking, the on-site control loop is not connected into the human body switch to serve as a standby loop, and when the remote control loop fails or the human body induction switch is damaged, the capacitor can be switched on-site, so that the problem that people exist in a capacitor room in the prior art and the danger of explosion injury caused by overvoltage of the capacitor operation is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a circuit diagram of a safety interlock circuit for preventing a capacitor from exploding to hurt a person.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.
Embodiment 1, as shown in fig. 1, a safety interlock circuit for preventing a capacitor from exploding and injuring a person comprises a circuit breaker ZKK, wherein the circuit breaker ZKK is connected to a positive electrode +km and a negative electrode +km of a power supply, the circuit breaker ZKK is connected with a normally open switch of an intermediate relay ZJ1, the normally open switch of the intermediate relay ZJ1 and the normally open switch of the intermediate relay ZJ2 are connected in parallel and then connected to the circuit breaker QF1, the circuit breaker QF1 is connected with a rear end of a circuit breaker ZKK of the negative electrode +km of the power supply, a front end of the normally open switch of the intermediate relay ZJ2 is connected with a change-over switch KK, the rear side of the change-over switch KK is divided into two branches, one branch is connected with a controller KZQ1, a button SB1 is connected to the rear end of the circuit breaker QF1 after the series connection of the coil of the intermediate relay ZJ1, the other branch is connected with a normally closed contact of the inductive switch KG1, a normally closed contact of the inductive switch KG2 is connected with a normally closed contact of the inductive switch KG3, and a normally closed contact of the inductive switch KG4 is connected to the controller KZQ2 after the series connection.
The controller KZQ2 rear end is connected to the coil of intermediate relay ZJ1 and the coil of intermediate relay ZJ2 respectively, the coil of intermediate relay ZJ2 is connected to circuit breaker QF1 rear end, controller KZQ1 front end draws button SB2 to be connected in intermediate relay ZJ2 coil front end, change-over switch KK front end connects inductive switch KG1 normally open contact, inductive switch KG2 normally open contact, inductive switch KG3 normally open contact, inductive switch KG4 normally open contact's parallelly connected back connection pilot lamp L1, pilot lamp L1 is connected to circuit breaker QF1 rear end, change-over switch KK's front end is connected with pilot lamp L2, pilot lamp L2 and pilot lamp L3, pilot lamp L4 are connected in circuit breaker QF2 after parallelly connected, the pilot lamp of corresponding circuit behind the circuit breaker QF2 switch-on or the switch-off is on, circuit breaker QF2 is connected in circuit breaker QF1 rear end.
The circuit breaker ZKK is a two-way linkage switch and is respectively connected to the two ends of the positive electrode +KM and the negative electrode-KM of the power supply. The circuit breaker ZKK acts as a switch for the power supply, and when the power supply needs to be cut off, the power supply can be directly cut off through the circuit breaker ZKK.
The controller KZQ2 is designed for each 2 contacts at the front and back, and the contacts at the front end of the controller KZQ2 are all connected to the rear end of the inductive switch KG 4.
The inductive switch KG1, the inductive switch KG2, the inductive switch KG3 and the inductive switch KG4 are respectively arranged on the front side, the back side, the left side, the right side and the right side of the capacitive cabinet, and the inductive switch acts when someone exists and is in an inductive range.
The change-over switch KK comprises 4 contacts, namely a contact ①, a contact ②, a contact ③ and a contact ④, and three gears are respectively arranged on the change-over switch KK, namely an A gear, a 0 gear and a B gear.
The A gear of change-over switch KK is the local gear, and the contact ① and the contact ② of change-over switch KK switch on, the 0 gear of change-over switch KK is the neutral gear, and the change-over switch KK breaks off, the B gear of change-over switch KK is the distant place shelves, and the contact ③ of change-over switch KK is put through with contact ④.
When the change-over switch KK is switched to the A gear, the contact ① is connected with the contact ②, an operator can press the button SB1 on site to operate to close, the normally open switch of the intermediate relay ZJ1 is closed, the closing coil in the circuit breaker QF is electrified, and the closing is successful; pressing the button SB2 to operate the opening, the normally open switch of the intermediate relay ZJ2 is closed, the opening coil in the breaker QF is electrified, and the opening is successful.
When the change-over switch KK is switched to the B gear, the contact ③ and the contact ④ are connected, an operator can remotely operate the computer background system, when a switching-on command is clicked, the controller KZQ1 controls the connection, the normally open switch of the intermediate relay ZJ1 is closed, the switching-on coil in the circuit breaker QF is electrified, and switching-on is successful; when a brake-off command is clicked, the controller KZQ1 is controlled to be turned on, the normally open switch of the intermediate relay ZJ2 is attracted, a brake-off coil in the breaker QF is electrified, and brake-off is successful.
When the change-over switch KK is switched to the B gear, the four human body induction switches, the induction switch KG1, the induction switch KG2 and the induction switch KG3 are connected in parallel with the normally open contact of the induction switch KG4 and are connected in series with the indicator lamp L1, when any one human body induction switch senses that a person exists, the normally open contact of the human body induction switch is closed, the indicator lamp L1 is powered on, and the current state is indicated to be that the remote control closing function is closed;
Simultaneously, four human body inductive switches, inductive switch KG1, inductive switch KG2, inductive switch KG3 and inductive switch KG 4's normally closed contact establish ties, concatenates between change over switch KK's contact ④ and controller KZQ 2. When any one of the human body inductive switches senses that a person exists, the normally closed contact of the human body inductive switch is opened, and the remote control switching-on loop is disconnected, so that the remote control switching-on function is locked.
When the switch KK is installed to the A gear, the function of the switch is not affected by a human body switch, so that the on-site opening and closing operation can be ensured.
What is not described in detail in this specification is prior art known to those skilled in the art.
The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.
Claims (6)
1. A safety interlock circuit for preventing a capacitor from being burst and hurt a person is characterized by comprising a circuit breaker ZKK, wherein the circuit breaker ZKK is connected to a positive pole +KM and a negative pole +KM of a power supply, the circuit breaker ZKK is connected with a normally open switch of an intermediate relay ZJ1, the normally open switch of the intermediate relay ZJ1 and the normally open switch of the intermediate relay ZJ2 are connected in parallel and then connected to the circuit breaker QF1, the circuit breaker QF1 is connected with the rear end of the circuit breaker ZKK of the negative pole +KM, the front end of the normally open switch of the intermediate relay ZJ2 is connected with a change-over switch KK, the rear side of the change-over switch KK is divided into two branches, one path is connected with a controller KZQ1, a button SB1, the series rear end of a coil of the intermediate relay ZJ1 is connected to the rear end of the circuit breaker QF1, the other path is connected with a normally closed contact of the inductive switch KG1, a normally closed contact of the inductive switch KG2 is connected with a normally closed contact of the inductive switch KG3, the series rear end of the inductive switch KG4 normally closed contact is connected to the controller KZQ2, the rear end of the inductive switch KG2 is respectively connected to the intermediate relay QF1 and the front end of the intermediate relay QF2, the inductive switch 4 is connected with the front end of the indicator QF2, and the indicator QF2 is connected with the front end of the normally open switch 2, and the front end of the inductive switch 4 is connected with the normally closed contact, and the normally closed contact is connected with the normally closed contact of the switch QL 1.
2. The safety interlock circuit for preventing explosion injury of capacitor according to claim 1, wherein the circuit breaker ZKK is a two-way interlock switch connected to the positive pole +km and the negative pole-KM of the power supply, respectively.
3. The safety interlocking circuit for preventing the explosion of the capacitor from injuring the human body according to claim 1, wherein the controller KZQ2 is designed for each 2 contacts at the front and the rear, and the contacts at the front end of the controller KZQ2 are all connected with the rear end of the inductive switch KG 4.
4. A safety interlock circuit for preventing capacitor explosion injury according to claim 1, wherein the inductive switch KG1, the inductive switch KG2, the inductive switch KG3 and the inductive switch KG4 are respectively arranged on the front side, the rear side, the left side and the right side of the capacitive cabinet.
5. The safety interlock circuit of claim 1 wherein said switch KK comprises 4 contacts, contact ①, contact ②, contact ③ and contact ④, respectively, said switch KK having three gear positions, a, 0 and B, respectively.
6. The safety interlock circuit of claim 1 wherein the a-range of the switch KK is an on-site range, the contact ① and the contact ② of the switch KK are on, the 0-range of the switch KK is a neutral range, the switch KK is off, the B-range of the switch KK is a remote range, and the contact ③ of the switch KK is on with the contact ④.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323022467.XU CN220964321U (en) | 2023-11-08 | 2023-11-08 | Safety interlocking circuit for preventing capacitor from being burst to hurt people |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323022467.XU CN220964321U (en) | 2023-11-08 | 2023-11-08 | Safety interlocking circuit for preventing capacitor from being burst to hurt people |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220964321U true CN220964321U (en) | 2024-05-14 |
Family
ID=91009042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323022467.XU Active CN220964321U (en) | 2023-11-08 | 2023-11-08 | Safety interlocking circuit for preventing capacitor from being burst to hurt people |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220964321U (en) |
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2023
- 2023-11-08 CN CN202323022467.XU patent/CN220964321U/en active Active
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