CN212032332U - Area linkage alarm system for detecting toxic and harmful gas - Google Patents
Area linkage alarm system for detecting toxic and harmful gas Download PDFInfo
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- CN212032332U CN212032332U CN202021075230.1U CN202021075230U CN212032332U CN 212032332 U CN212032332 U CN 212032332U CN 202021075230 U CN202021075230 U CN 202021075230U CN 212032332 U CN212032332 U CN 212032332U
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Abstract
The utility model discloses an area linkage alarm system for detecting poisonous and harmful gas, which comprises a poisonous and harmful gas detection device arranged at each detection position, and a master controller and an alarm device which are arranged in a control room and are in signal connection with each poisonous and harmful gas detection device; the master controller is connected with an area audible and visual alarm which is arranged on the channel and linked with the master controller through signals; the regional audible and visual alarm comprises an upper box body and a lower box body which are fixed into a whole, and corresponding threading holes are formed in the joint of the upper box body and the lower box body; a PLC control module is arranged in the upper box body, and the PLC control module is connected with an audible and visual alarm arranged on the outer side of the box body; a plurality of wiring terminals connected with the warning lamp are installed in the lower box body, and the input ends of the wiring terminals are connected with the PLC control module through signal lines. The utility model discloses can effectively improve and enlarge safe alarm distance to ensure more on-the-spot personnel's the security of the lives and property.
Description
Technical Field
The utility model relates to a poisonous and harmful gas surveys, reports to the police technical field, concretely relates to detect poisonous and harmful gas's regional linkage alarm system.
Background
At present, all chemical enterprises at home and abroad are provided with combustible gas detectors and toxic and harmful gas detection and alarm systems. Generally, a chemical plant or a hazardous chemical plant with a limited space is provided with a certain number of gas detection alarm instruments (for example, 16 gas detection alarm instruments), a field control room or a duty room is provided with a gas alarm controller, if any detector on the field detects gas leakage, an alarm value can be immediately alarmed, and meanwhile, the controller in the control room can also alarm at the same time, but workers around equipment or a limited space plant cannot know gas leakage alarm information in an equipment area, so that life safety accidents are easily caused.
Disclosure of Invention
Aiming at the technical problems, the technical scheme provides the area linkage alarm system for detecting the toxic and harmful gases, and the problems can be effectively solved.
The utility model discloses a following technical scheme realizes:
a regional linkage alarm system for detecting toxic and harmful gases comprises toxic and harmful gas detection devices arranged at detection positions, a master controller and an alarm device, wherein the master controller and the alarm device are arranged in a control room and are in signal connection with the toxic and harmful gas detection devices; the master controller is connected with an area audible and visual alarm which is arranged on the channel and linked with the master controller through signals; the regional audible and visual alarm comprises an upper box body and a lower box body which are fixed into a whole, and corresponding threading holes are formed in the joint of the upper box body and the lower box body; a PLC control module is arranged in the upper box body, and the PLC control module is connected with an audible and visual alarm arranged on the outer side of the box body; a plurality of wiring terminals connected with the warning lamp are installed in the lower box body, and the input ends of the wiring terminals are connected with the PLC control module through signal lines.
Furthermore, the front of the upper box body is provided with a power switch and a power indicator light which are connected with a power supply, and a circuit breaker is connected between the power indicator light and the power supply.
Further, the power supply adopts a direct current 24V power supply.
Furthermore, a test button connected with the PLC control module is arranged on the front surface of the upper box body; one end of the test button is connected between the audible and visual alarm and the PLC control module, and the other end of the test button is directly connected with a test point of the PLC control module.
Furthermore, the upper box body adopts an explosion-proof box with the explosion-proof grade of CT6, and the lower box body adopts an explosion-proof box with the explosion-proof grade of BT 6.
Furthermore, a tubular threading glan is arranged between the threading holes of the upper box body and the lower box body, and the aperture of the tubular threading glan is 45-55 mm.
Further, the threading department of going up box and lower box carries out encapsulating sealing treatment, and the degree of depth more than or equal to 20mm of encapsulating.
Furthermore, the bottom of the lower box body is provided with a plurality of tubular threading glans for externally connecting wires, and the aperture of each tubular threading glan is 25-27 mm.
Furthermore, the master controller and the PLC control module carry out signal transmission through an RS485 signal line.
Furthermore, the back of the upper box body and the back of the lower box body are fixed with installation components for installation.
(III) advantageous effects
The utility model provides a detect poisonous and harmful gas's regional linkage alarm system, compare with prior art, it has following beneficial effect:
(1) according to the technical scheme, the regional audible and visual alarm which is arranged on the channel and linked with the master controller is used, when any detector on site has alarm information, the master controller in the control room alarms, and meanwhile, the regional audible and visual alarm arranged on the channel can alarm and prompt alarm point position information; the safety alarm distance can be effectively increased and enlarged, so that the life and property safety of more field personnel is guaranteed.
(2) The circuit breaker is arranged, when the inside of the regional audible and visual alarm breaks down, the circuit breaker can automatically cut off a power supply, and the regional audible and visual alarm is protected.
(3) The setting of test button can detect audible-visual annunciator, can be based on the artificial audible-visual annunciator of demand has the damage, whether is in the state of normal work.
(4) The regional audible and visual alarm adopts the arrangement of an upper box body and a lower box body to separately process the part for installing the PLC control board and the part for installing the wiring terminal; high-level protection is carried out on the part which needs high-level explosion protection, and low-level protection is adopted on the part which does not need high-level protection; and the tubular threading glan at the position of the wiring hole and sealing treatment; the mode not only meets the requirement of explosion protection, but also saves the production cost of equipment.
(5) The master controller and the PLC control module carry out signal transmission through RS485 signal lines, multi-path signals can be transmitted only through one group of signal lines, and the integrity of signal transmission can be ensured; the phenomena of signal loss and data jumping caused by the influence of various interference signals on the distance and the site in the transmission process of the signals can be effectively avoided, and the signal transmission integrity in the chemical engineering toxic and harmful gas places is met. The defects of multiple lines, high cost and large errors caused by the transmission of a traditional 4-20mA transmission line are overcome (each table needs one group of signal lines when a common line is transmitted, and when the distance is long, signals are easy to attenuate, and errors are generated).
Drawings
Fig. 1 is a layout diagram of the overall system of the present invention.
Fig. 2 is a front view of the case in embodiment 1 of the present invention.
Fig. 3 is the circuit connection schematic diagram of the PLC control module of the present invention.
Fig. 4 is a schematic diagram of the circuit connection of the power supply of the present invention.
The labels in the figures are: 1-upper box body, 2-lower box body, 3-warning lamp and 4-tubular threading glan.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only some, but not all embodiments of the invention. Under the prerequisite that does not deviate from the design concept of the utility model, the ordinary person in the art should fall into the protection scope of the utility model to the various changes and improvements that the technical scheme of the utility model made.
Example 1:
as shown in fig. 1, an area linkage alarm system for detecting toxic and harmful gases comprises toxic and harmful gas detection devices installed at each detection position, and a master controller and an alarm device which are installed in a control room and connected with the toxic and harmful gas detection devices through RS485 signal lines for signal transmission, wherein the master controller is connected between the gas detection devices and the alarm device for signal transmission; and the master controller is arranged on the channel through an RS485 signal line and is in signal connection with the regional audible and visual alarm linked with the master controller.
The regional audible and visual alarm comprises an upper box body 1 and a lower box body 2 which are fixed into a whole through fastening nuts, wherein the upper box body 1 adopts an explosion-proof box with the explosion-proof grade of CT6, and the lower box body 2 adopts an explosion-proof box with the explosion-proof grade of BT 6; two corresponding threading holes are respectively arranged at the joint of the upper box body 1 and the lower box body 2; tubular threading glan is arranged between the threading holes, and the aperture of the tubular threading glan is 45-55 mm. In this embodiment, the aperture of the tubular threading glan is 50 mm.
After threading is finished, the lead is fixed by a fixing piece; performing glue filling and sealing treatment at the threading positions of the upper box body 1 and the lower box body 2, and performing glue filling and sealing treatment at both ends of the tubular threading glan, wherein the glue filling depth is more than or equal to 20 mm; in this embodiment, the depth of the potting adhesive is 20 mm.
A shell of the upper box body 1 is provided with a power switch, a test button and a power indicator light; the shell of the upper box body is internally provided with a PLC control module, and the top of the upper box body is provided with an audible and visual alarm connected with the PLC control module.
A circuit breaker is connected between the power indicator lamp and the power supply. The power supply adopts a direct current 24V power supply, the direct current 24V power supply is connected with a power switch, and the power switch is connected with the PLC control module; and two ends of the power indicator lamp are respectively connected with the power supply and the PLC control module.
The test button is connected with the PLC control module, one end of the test button is connected between the audible and visual alarm and the PLC control module, and the other end of the test button is directly connected with a test point of the PLC control module. When the test button is pressed, the audible and visual alarm can normally give an alarm, and then the audible and visual alarm is in a normal working state; when the test button is pressed, the audible and visual alarm does not sound or light or does not sound or light, so that the audible and visual alarm breaks down and needs to be overhauled in time.
And the master controller and the PLC control module carry out signal transmission through an RS485 signal line.
The main controller adopts a high-performance embedded integrated man-machine interface with a Cortex-A8 CPU as a core (main frequency 600 MHZ), can distinguish whether a site toxic and harmful gas detection device is fault information or gas leakage alarm information at all, and prompts the fault information or the gas leakage alarm information on a panel of an area linkage alarm.
An HY24DOR type isolation output module is adopted by the PLC control module, and the module is a universal remote I/O product in an automatic system; the switching value signal output function is realized through the RS485 communication interface, and the output signal type is a relay contact.
HY24DOR type keeps apart the output module for full industrial design, and the three-terminal is kept apart, and each other is electric between power supply promptly, switching value output, the RS485 communication interface and keeps apart, effectively suppresses all kinds of series mode and common mode interference of industrial field, has guaranteed operational reliability and data precision. The RS485 communication interface executes an MODBUS RTU protocol and can be directly connected with various PLC systems, DCS systems, man-machine screens and various configuration software.
16 warning lamps 4 are arranged on the shell of the lower box body 2, and the number of the warning lamps 4 can be increased or decreased through the number of the field detectors; or the warning lamps 4 can be connected by the number of the field detectors; a plurality of wiring terminals connected with the warning lamp are installed in the shell, and the input ends of the wiring terminals are connected with the PLC control module through RS485 signal lines.
The bottom of the lower box body 2 is provided with a plurality of tubular threading glans 3 for externally connecting wires, and the aperture of each tubular threading glan 3 is 25-27 mm; in this embodiment, the aperture of the tubular threading glan 3 is 26.5 mm.
Mounting components for mounting are fixed on the back surfaces of the upper box body 1 and the lower box body 2; in this embodiment, the mounting assembly is a mating clip assembly.
The working principle is as follows: according to the digit and position distribution diagram of the on-site toxic and harmful gas detection device, different position alarm information positions are set, the working voltage of the on-site area linkage alarm is 24VDC, the power is less than or equal to 150W, and the maximum alarm sound of the top explosion-proof audible and visual alarm is 120 decibels. When any toxic and harmful gas detection device on site has alarm information, the controllers in the control room alarm at the same time, and the area linkage audible and visual alarm of the device on the channel also alarms at the same time, and prompts alarm point position information.
If the alarm information is gas leakage alarm information, the corresponding point position (namely site fault point position) indicator lamp of the panel of the regional linkage audible and visual alarm is normally on, and the audible and visual alarm at the top of the regional linkage audible and visual alarm is rapidly started to prompt surrounding workers to take proper and correct safety measures, so that the life and property safety of people is ensured.
Claims (10)
1. A regional linkage alarm system for detecting toxic and harmful gases comprises toxic and harmful gas detection devices arranged at detection positions, a master controller and an alarm device, wherein the master controller and the alarm device are arranged in a control room and are in signal connection with the toxic and harmful gas detection devices; the method is characterized in that: the master controller is connected with an area audible and visual alarm which is arranged on the channel and linked with the master controller through signals; the regional audible and visual alarm comprises an upper box body (1) and a lower box body (2) which are fixed into a whole, and corresponding threading holes are formed in the joint of the upper box body (1) and the lower box body (2); a PLC control module is arranged in the upper box body, and the PLC control module is connected with an audible and visual alarm arranged on the outer side of the box body; a plurality of wiring terminals connected with the warning lamp (4) are installed in the lower box body (2), and the input ends of the wiring terminals are connected with the PLC control module through signal lines.
2. The system of claim 1, wherein the alarm system is used for detecting the poisonous and harmful gas, and comprises: the front of the upper box body (1) is provided with a power switch and a power indicator lamp which are connected with a power supply, and a circuit breaker is connected between the power indicator lamp and the power supply.
3. The system of claim 2, wherein the alarm system is a linked alarm system for detecting toxic and harmful gases, and comprises: the power supply adopts a direct current 24V power supply.
4. The system of claim 1, wherein the alarm system is used for detecting the poisonous and harmful gas, and comprises: the front surface of the upper box body (1) is provided with a test button connected with the PLC control module; one end of the test button is connected between the audible and visual alarm and the PLC control module, and the other end of the test button is directly connected with a test point of the PLC control module.
5. The system of claim 1, wherein the alarm system is used for detecting the poisonous and harmful gas, and comprises: the explosion-proof box that upper box body (1) adopted the explosion-proof grade to be CT6, lower box body (2) adopt the explosion-proof grade to be BT 6.
6. The system of claim 1, wherein the alarm system is used for detecting the poisonous and harmful gas, and comprises: a tubular threading glan is arranged between the threading holes of the upper box body (1) and the lower box body (2), and the aperture of the tubular threading glan is 45-55 mm.
7. The system of claim 1, wherein the alarm system is used for detecting the poisonous and harmful gas, and comprises: and the threading positions of the upper box body (1) and the lower box body (2) are subjected to glue pouring sealing treatment, and the glue pouring depth is more than or equal to 20 mm.
8. The system of claim 1, wherein the alarm system is used for detecting the poisonous and harmful gas, and comprises: the bottom of the lower box body (2) is provided with a plurality of tubular threading glans (3) for externally connecting wiring, and the aperture of each tubular threading glan (3) is 25-27 mm.
9. The system of claim 1, wherein the alarm system is used for detecting the poisonous and harmful gas, and comprises: and the master controller and the PLC control module carry out signal transmission through an RS485 signal line.
10. The system of claim 1, wherein the alarm system is used for detecting the poisonous and harmful gas, and comprises: and mounting assemblies for mounting are fixed on the back surfaces of the upper box body (1) and the lower box body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021075230.1U CN212032332U (en) | 2020-06-12 | 2020-06-12 | Area linkage alarm system for detecting toxic and harmful gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021075230.1U CN212032332U (en) | 2020-06-12 | 2020-06-12 | Area linkage alarm system for detecting toxic and harmful gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212032332U true CN212032332U (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021075230.1U Active CN212032332U (en) | 2020-06-12 | 2020-06-12 | Area linkage alarm system for detecting toxic and harmful gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212032332U (en) |
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2020
- 2020-06-12 CN CN202021075230.1U patent/CN212032332U/en active Active
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