CN216119971U - Downhole power switch combined lock - Google Patents
Downhole power switch combined lock Download PDFInfo
- Publication number
- CN216119971U CN216119971U CN202122676074.5U CN202122676074U CN216119971U CN 216119971 U CN216119971 U CN 216119971U CN 202122676074 U CN202122676074 U CN 202122676074U CN 216119971 U CN216119971 U CN 216119971U
- Authority
- CN
- China
- Prior art keywords
- switch
- feed
- feed switch
- monitoring substation
- breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a combined locking of an underground power switch, which comprises a monitoring substation, a gas sensor, a first feed switch, a second feed switch, a feed state sensor and a breaker, wherein the monitoring substation is connected with the gas sensor through a power line; the gas sensor is arranged on a working surface; the input end of the monitoring substation is connected with the gas sensor, the output end of the monitoring substation is connected with the input end of the breaker, the breaker is connected to the on-off locking point of the first feed switch, and the first feed switch is connected with the second feed switch; the input end of the feeding state sensor is connected with the second feeding switch, and the output end of the feeding state sensor is connected with the monitoring substation. Two or more breakers and feed state sensors are needed during normal installation, and the combined locking function can be realized by only one breaker and feed state sensor on each working surface, so that the input cost of the breakers and the sensors is saved.
Description
Technical Field
The utility model relates to the technical field of coal mine safety, in particular to a combined locking of an underground power switch.
Background
When the power-off control equipment is installed on a tunneling working face, all power-off functions can be achieved only by one power-off device, but with the increase of productivity and the increase of mechanization degree, complete equipment such as a high-power rock roadway tunneling machine, an anchor rod trolley, a continuous conveyor and the like is applied to replace the traditional drilling and blasting tunneling technology, and the mechanized operation of tunneling, supporting and transporting is achieved, so that equipment with different voltage levels on the working face can be generated, multiple types of equipment can be generated on the working face, the simultaneous power-off of all switches can not be completely achieved by one power-off device according to the power-off requirement, the power-off device must be installed on a feed switch of different equipment, the investment and cost of the equipment are increased, the complexity of site construction is increased, the maintenance intensity and labor intensity of personnel are increased, and the occupation and distribution of monitoring substation power supplies and channel numbers are achieved. Sometimes, adding a piece of equipment may put pressure on monitoring capacity resources to run at full capacity, thereby increasing monitoring facilities and cost.
As shown in fig. 1, in the prior art, a gas sensor is connected to one end of an AC660V feeder switch through a monitoring substation and a power-off instrument, an AC660V feeder switch closing lock wire is connected to an AC1140V feeder switch to realize interlocking, and a power-off device is installed on an AC660V feeder switch; when a power-off command is sent to the AC660V feed switch, a feedback signal is also monitored by the load side of the AC660V feed switch, and the locking function of the AC1140V feed switch is realized through a series control line between the AC660V feed switch and the AC1140V feed switch in a normal state. Therefore, if the series control line of the two devices has a problem, only the 660V switch can be monitored to be powered off and the feedback is normal, and whether the 1140V feed switch is in a locking state cannot be accurately grasped.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: how to reduce the equipment investment cost while realizing the switch combined locking.
In order to solve the technical problems, the utility model provides the following technical scheme:
a downhole power switch combined lock comprises a monitoring substation, a gas sensor, a first feed switch, a second feed switch, a breaker and a feed state sensor;
the gas sensor is arranged on a working surface;
the input end of the monitoring substation is connected with the gas sensor, the output end of the monitoring substation is connected with the input end of the breaker, the breaker is connected to the on-off locking point of the first feed switch, and the first feed switch is connected with the second feed switch;
the input end of the feeding state sensor is connected with the second feeding switch, and the output end of the feeding state sensor is connected with the monitoring substation.
The advantages are that: in the utility model, each working face can realize the function of combined locking only by one breaker and the feed state sensor, thereby saving the investment cost of the breaker and the sensor.
Preferably, the feeding state sensor is mounted on the second feeding switch.
Preferably, the first feed switch is an AC1140V feed switch and the second feed switch is an AC660V feed switch.
Preferably, the first feed switch is an AC660V feed switch and the second feed switch is an AC1140V feed switch.
Compared with the prior art, the utility model has the beneficial effects that:
(1) according to the utility model, through improving the combined locking of the underground power switch, at least one power-off sensor device is reduced for each improved working surface, and each breaker is about 6000 yuan, so that the investment of the breaker device is greatly saved.
(2) Meanwhile, the pressure of the expansion capacity of the underground monitoring substation is reduced, originally, a plurality of paths of monitoring channel signals need to be occupied, and now only one path of signals is needed, so that the installation of the monitoring substation is reduced, and the investment of an underground switch is reduced.
(3) The utility model greatly reduces the investment of monitoring equipment, can reduce the maintenance force and saves the cost.
Drawings
FIG. 1 is a schematic diagram of a prior art disconnect of a feeder switch;
FIG. 2 is a circuit diagram according to an embodiment of the present invention.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the drawings attached to the specification.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Example one
Referring to fig. 2, the embodiment discloses a downhole power switch combined lock, which includes a gas sensor 1, a monitoring substation 2, an interrupter 3, a first feed switch 4, a second feed switch 5 and a feed state sensor 6;
the gas sensor 1 is arranged on a working surface;
the input end of the monitoring substation 2 is connected with the gas sensor 1, the output end of the monitoring substation is connected with the input end of the breaker 3, the breaker 3 is connected with the on-off locking point of the first feed switch 4, and the first feed switch 4 is connected with the second feed switch 5;
the input end of the feeding state sensor 6 is connected with the second feeding switch 5, and the output end is connected with the monitoring substation 2 through the feedback of the breaker.
Wherein the first feed switch 4 is an AC1140V feed switch and the second feed switch 5 is an AC660V feed switch.
The gas sensor 1 is arranged on the working surface and used for monitoring the gas concentration of the working surface, when the gas concentration reaches a set value, a signal is sent to the system, and the system automatically cuts off all equipment power supplies in the working surface; when the gas concentration is reduced to be below a set value, the system is switched to a state of allowing power transmission, and the gas locking function is realized by completing the process.
The feeding state sensor 6 is installed in the AC660V feeding switch for monitoring whether the load side is charged or not, and then sends a signal to the monitoring substation 2, and the monitoring substation 2 judges whether the load side is charged or not according to the transmitted signal.
In the implementation, the comprehensive development working face has at least two types of AC660V feed switches and AC1140V feed switches, if the scheme in the background art is adopted, an interrupter 3 and a feed state sensor 6 must be installed on the AC660V feed switch, and an interrupter 3 and a feed state sensor 6 are also installed on the AC1140 feed switch, so that the installation of the interrupter 3 and the feed state sensor 6 is increased, and the use cost is increased.
In this embodiment, by providing an interrupter 3 at the on-off latch point of the AC1140V feed switch and a feed status sensor 6 at the AC660V feed switch, the AC1140V feed switch is connected to the AC660V feed switch via a series control line. When the power supply is normally used, the breaker 3 controls the on-off of the two feed switches, and the feed state sensor 6 is used for monitoring whether the feed switches are normal or not.
If a fault occurs in the circuit, the monitoring substation 2 sends a power-off signal, and the power-off device 3 controls the AC1140V feed switch to disconnect the power-off point of the power-off switch, so that the AC1140V feed switch is locked, and then the series locking line between the two feed switches realizes the self locking of the AC660V feed switch, so that the combined locking between the two feed switches is realized. The feeding state sensor 6 monitors the power failure condition of the AC660V feeding switch and feeds back the power failure condition to the monitoring substation 2, so that the power failure is ensured to be normal, if any connecting line has a problem, a feedback signal of the feeding state sensor 6 is not turned over, and a worker can judge that a fault occurs and arrange the worker to process the fault in time.
In the scheme, only one breaker 3 and one feed state sensor 6 are used, and each breaker 3 is about 6000 yuan, so that the input cost of the breaker 3 and the sensor equipment is greatly saved. And the reduced feed state can reduce the pressure of the expansion capacity of the underground monitoring substation 2, originally, a plurality of monitoring channel signals need to be occupied, and only one channel is needed, so that the installation of the monitoring substation 2 is reduced, and the investment of an underground switch is reduced. Therefore, the utility model greatly reduces the investment of monitoring equipment, and can reduce the maintenance force and save the cost.
Example two
The difference between the present embodiment and the first embodiment is: the first feed switch 4 of the present embodiment is an AC660V feed switch, and the second feed switch 5 is an AC1140V feed switch.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The above-mentioned embodiments only represent the embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the concept of the present invention, and these embodiments are all within the protection scope of the present invention.
Claims (4)
1. A downhole power switch combined lock is characterized in that: the system comprises a gas sensor (1), a monitoring substation (2), an interrupter (3), a first feed switch (4), a second feed switch (5) and a feed state sensor (6);
the gas sensor (1) is arranged on a working surface;
the input end of the monitoring substation (2) is connected with the gas sensor (1), the output end of the monitoring substation is connected with the input end of the breaker (3), the breaker (3) is connected to the on-off locking point of the first feed switch (4), and the first feed switch (4) is connected with the second feed switch (5);
the input end of the feeding state sensor (6) is connected with the second feeding switch (5), and the output end is connected with the monitoring substation (2).
2. A downhole power switch combination lockout as claimed in claim 1 wherein: the feeding state sensor (6) is mounted on the second feeding switch (5).
3. A downhole power switch combination lockout as claimed in claim 1 wherein: the first feed switch (4) is an AC1140V feed switch and the second feed switch (5) is an AC660V feed switch.
4. A downhole power switch combination lockout as claimed in claim 1 wherein: the first feed switch (4) is an AC660V feed switch and the second feed switch (5) is an AC1140V feed switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122676074.5U CN216119971U (en) | 2021-11-02 | 2021-11-02 | Downhole power switch combined lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122676074.5U CN216119971U (en) | 2021-11-02 | 2021-11-02 | Downhole power switch combined lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216119971U true CN216119971U (en) | 2022-03-22 |
Family
ID=80712765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122676074.5U Active CN216119971U (en) | 2021-11-02 | 2021-11-02 | Downhole power switch combined lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216119971U (en) |
-
2021
- 2021-11-02 CN CN202122676074.5U patent/CN216119971U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112332399B (en) | 220V two-electricity two-charge multi-feed direct current system | |
| AU601038B2 (en) | Improvements in or relating to electro-hydraulic control systems | |
| CN216119971U (en) | Downhole power switch combined lock | |
| CN202472370U (en) | Coal mine safety monitoring system | |
| CN109149780A (en) | A kind of long-range switching system of railway signal power supply screen input power | |
| CN102684295B (en) | Mining flameproof dual-power switching control box | |
| CN104969440B (en) | Intelligent grid equipment | |
| CN105186471A (en) | Power distribution network line fault detection device and method | |
| CN100449926C (en) | System of communication power supply | |
| JP3848854B2 (en) | Circuit to prevent the expansion of obstacles caused by high-voltage ground faults on DC electric railways | |
| CN211981350U (en) | Low-voltage distribution active operation and maintenance device | |
| CN202535147U (en) | Mining explosion-suppression type double-power supply switching control box | |
| CN102664672B (en) | Bidirectional relay with automatic follow-up faulty cable disconnection and recovery functions and method for controlling bidirectional relay | |
| CN202550302U (en) | Multi-voltage multi-circuit mining explosion-suppression intrinsic safety power center | |
| CN105610238B (en) | A kind of intelligent network distribution system and distribution method based on redundancy structure | |
| CN204706941U (en) | High voltage input and low-voltage exports uninterrupted for distribution integrating device | |
| CN101051581B (en) | Error identification method of digital transformer differential protection for preventing TA secondary loop fault | |
| CN201851152U (en) | Wind power locking device | |
| CN217427756U (en) | Power supply remote control switching device | |
| CN201541147U (en) | Direct current power supply system for substations | |
| CN205422818U (en) | NULL portable blower motor switch warning assembly | |
| CN201174616Y (en) | Power supplying device for mine well part fan | |
| CN217485999U (en) | Optical fiber override-preventing switch protection device for coal mine power supply system | |
| CN104242434A (en) | Emergency power supply device used on tunneling work face of coal mine | |
| CN213959825U (en) | Different-station double-ring network structure based on central switching station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |