CN202736233U - Operation alarm device in confined space - Google Patents
Operation alarm device in confined space Download PDFInfo
- Publication number
- CN202736233U CN202736233U CN 201220197147 CN201220197147U CN202736233U CN 202736233 U CN202736233 U CN 202736233U CN 201220197147 CN201220197147 CN 201220197147 CN 201220197147 U CN201220197147 U CN 201220197147U CN 202736233 U CN202736233 U CN 202736233U
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- transformer
- control circuit
- relay
- audible
- time relay
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- Expired - Fee Related
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Abstract
An operation alarm device in a confined space is applied in the safety protection for petrochemical safety operation in the confined space. A control circuit and a transformer are fixed in an explosion-proof box, a power line is connected with the transformer, an indicator and an audible and visual alarm are connected with the control circuit by a conducting wire; one port of the transformer is connected with a start switch of the control circuit, the other port of the transformer is connected with one ends of a relay of the control circuit, a time relay open and close contact, the audible and visual alarm and the indicator; a micro switch is connected between the other ends of the relay and the start switch by the switch conducting wire, a normally open contact of the relay is connected between the other ends of the time relay and the start switch; and the time relay open and close contact is connected between the other ends of the audible and visual alarm and the start switch. The operation alarm device has the following beneficial effect that the life safety of the operation personnel in the confined space is ensured.
Description
Technical field
The utility model relates to petrochemical complex restricted clearance safety work technical field, particularly a kind of restricted clearance Job Alerts device.
Background technology
At present, in the production run of oil and petrochemical field, restricted clearance (in oil tank) operation always is the higher operation of danger coefficient in the high-risk operations.Internal staff's operation task of restricted clearance is very many, owing to existing toxic gas, dust, high temperature, anoxic etc. to the factor of operating personnel's injury in the restricted clearance, the potential safety hazard that has very large personal injury, cause after the shock during operating personnel's operation as untimely discovery, can cause great human casualty accident, therefore prevent that the monitoring that personnel suffer a shock is very important.
In existing technology; in order to prevent that operating personnel from suffering a shock during operation in restricted clearance; usually adopt the means of " people work; people monitoring " to protect; its deficiency is to need guarding of outside monitoring personnel artificial observation, calling or supervisory work personnel regularly; can't require assistance by initiative alarming, operating personnel's life, property safety etc. can not get effective protection.
The utility model content
The purpose of this utility model is: a kind of restricted clearance Job Alerts device is provided, the operating personnel in the restricted clearance poison, heatstroke and when falling in a swoon shock the outside monitoring personnel of active warning in time rescue.
The technical solution adopted in the utility model is: restricted clearance Job Alerts device, comprise power lead, anti-explosion box body and control circuit and transformer, it is characterized in that: control circuit and transformer are fixed in the anti-explosion box body, the power lead connection transformer, transformer is converted into safe voltage to the voltage of power frequency.Be fixed with pilot lamp and audible-visual annunciator covering of anti-explosion box body, pilot lamp is connected wire with audible-visual annunciator and connects control circuit; One port of transformer connects the starting switch of control circuit, and the another port of transformer connects the relay of control circuit, the end that the time relay opens and closes contact, audible-visual annunciator and pilot lamp; Be connected microswitch by switch wire between relay and the starting switch other end, be connected relay normally open contact between the time relay and the starting switch other end; The tie-time relay opens and closes the contact between audible-visual annunciator and the starting switch other end.Relay electric-loss when microswitch unclamps and the closure of relay normally closed contact, make the time relay electric and after reaching the delay time that the time relay sets, make the time relay normally opened contact of the time relay closed, and then the acousto-optic-electric alarm is started.
The principle of work of restricted clearance Job Alerts device: consult Fig. 1.In operating personnel enter restricted clearance 1, switch wire 4 is by restricted clearance import 3, during operating personnel's operation with holding tight microswitch 2, relay gets electric and normally closed contact disconnects and to make the time relay 12 dead electricity, faint operating personnel, microswitch 2 unclamps naturally when falling in a swoon or suffering a shock, make relay electric-loss and the normally closed contact closure make the time relay 12 the electrician accomplish set delay time after, make the normally opened contact of the time relay 12 closed, audible-visual annunciator 6 gets electric and reports to the police, remind the outer monitoring personnel of restricted clearance to rescue, thereby reach the function of alarm.Construction is turned off starting switch 13 after finishing.
The beneficial effects of the utility model: the utility model restricted clearance Job Alerts device, the mode that changes the initiative alarming prompting from the passive rescue mode of PASSIVE SURVEILLANCE personnel's observation, calling or supervision into is guarded, and has farthest guaranteed the life security of operating personnel in the restricted clearance.
Description of drawings
Fig. 1 is the utility model restricted clearance Job Alerts apparatus structure schematic diagram.
Fig. 2 is circuit theory diagrams.
Among the figure, 1-restricted clearance, 2-microswitch, the import of 3-restricted clearance, 4-switch wire, 5-pilot lamp, the 6-audible-visual annunciator, 7-power lead, 8-anti-explosion box body, the 9-control circuit, 10-transformer, 11-relay, the 12-time relay, the 13-starting switch, the 11a-relay normally open contact, the 12a-time relay opens and closes the contact.
Embodiment
Embodiment 1: take a restricted clearance Job Alerts device as example, the utility model is described in further detail.
Consult Fig. 1.The utility model restricted clearance Job Alerts device comprises power lead 7, anti-explosion box body 8 and control circuit 9 and transformer 10.Control circuit 9 and transformer 10 are fixed in the anti-explosion box body 8 of cuboid, power lead 7 connection transformers 10.Be fixed with a pilot lamp 5 and an audible-visual annunciator 6 on the loam cake top of anti-explosion box body 8, pilot lamp 5 is connected with audible-visual annunciator by wire connection control circuit 9.
Consult Fig. 2.One port of transformer 10 connects the starting switch 13 of control circuit 9, and the another port of transformer 10 connects the relay 11 of control circuit 9, the end that the time relay opens and closes contact 12a, audible-visual annunciator 6 and pilot lamp 5.Be connected microswitch 2 by switch wire 4 between relay 11 and starting switch 13 other ends, be connected relay normally open contact 11a between the time relay 12 and starting switch 13 other ends; The tie-time relay opens and closes contact 12a between audible-visual annunciator 6 and starting switch 13 other ends.
Claims (1)
1. restricted clearance Job Alerts device, comprise power lead (7), anti-explosion box body (8) and control circuit (9) and transformer (10), it is characterized in that: control circuit (9) and transformer (10) are fixed in the anti-explosion box body (8), power lead (7) connection transformer (10), be fixed with pilot lamp (5) and audible-visual annunciator (6) covering of anti-explosion box body (8), pilot lamp (5) is connected 6 with audible-visual annunciator) connect control circuit (9) by wire; One port of transformer (10) connects the starting switch (13) of control circuit (9), and the another port of transformer (10) connects the relay (11) of control circuit (9), the end that the time relay opens and closes contact (12a), audible-visual annunciator (6) and pilot lamp (5); Be connected microswitch (2) by switch wire (4) between relay (11) and starting switch (13) other end, be connected relay normally open contact (11a) between the time relay (12) and starting switch (13) other end; The tie-time relay opens and closes contact (12a) between audible-visual annunciator (6) and starting switch (13) other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220197147 CN202736233U (en) | 2012-05-04 | 2012-05-04 | Operation alarm device in confined space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220197147 CN202736233U (en) | 2012-05-04 | 2012-05-04 | Operation alarm device in confined space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202736233U true CN202736233U (en) | 2013-02-13 |
Family
ID=47661911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220197147 Expired - Fee Related CN202736233U (en) | 2012-05-04 | 2012-05-04 | Operation alarm device in confined space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202736233U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106671831A (en) * | 2017-03-07 | 2017-05-17 | 中铁十七局集团电气化工程有限公司 | Device for monitoring charged state of overhead contact line |
| CN113870541A (en) * | 2021-09-22 | 2021-12-31 | 广东电网有限责任公司 | Low-voltage system operation experimental method and device |
-
2012
- 2012-05-04 CN CN 201220197147 patent/CN202736233U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106671831A (en) * | 2017-03-07 | 2017-05-17 | 中铁十七局集团电气化工程有限公司 | Device for monitoring charged state of overhead contact line |
| CN113870541A (en) * | 2021-09-22 | 2021-12-31 | 广东电网有限责任公司 | Low-voltage system operation experimental method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20210504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |