CN2275261Y - Automatic protector for gas leakage - Google Patents
Automatic protector for gas leakage Download PDFInfo
- Publication number
- CN2275261Y CN2275261Y CN 96230207 CN96230207U CN2275261Y CN 2275261 Y CN2275261 Y CN 2275261Y CN 96230207 CN96230207 CN 96230207 CN 96230207 U CN96230207 U CN 96230207U CN 2275261 Y CN2275261 Y CN 2275261Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- gas leakage
- gas
- driven gear
- main shaft
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an alarming and protecting device used when fuel gas leakage happens. The alarming and protecting device is composed of a fuel gas detection circuit, a signal amplifying circuit, a two level comparison circuit, a sound and light alarming circuit and a corresponding sound and light alarm thereof, an exhaust device driving circuit, and an electric valve controlling device and a driving circuit thereof. When fuel gas leakage happens, the utility model not only can effectively emit sound and light alarming signals and open an exhaust device, but also can close a chief valve in time. Therefore, when used, the utility model is safer and more reliable. Because the measures of strong-level sound and light alarm, weak-level sound and light alarm, exhaust, fuel gas channel closure, etc. are adopted on a control circuit, the alarming and protecting device is more scientific and reasonable in structure.
Description
Warning and protective device when the utility model relates to a kind of gas leakage.
Before the utility model is made, report to the police automatically when leaking and the device of closing gas communication in the pipeline has report repeatly about liquefied gas and piped gas, similar device is all disclosed as Chinese patent 92219410,93229446 etc.But these devices are when reporting to the police and opening air exhausting device, and what have can only control local blast tube and can not close main valve, and defencive function is not strong; Though what have can control main valve, need transform original gas combustion apparatus, install very inconvenient.
A kind of device of reporting to the police and protecting that can provide simultaneously when gas leakage is provided the purpose of this utility model, and this device had both had the function of warning and air draft, can close main valve again, and need not change original gas facility.
The utility model comprises combustion gas testing circuit and the signal amplification circuit that is used to detect gas leakage, the output terminal of signal amplification circuit connect respectively the weak signal comparator circuit 1. and strong signal comparator circuit 2., comparator circuit output terminal is 1. leaded up to optical alarm circuit and is connected with light crossing-signal, and another road is by the 1. external air exhausting device of driving circuit; Comparator circuit output terminal is 2. leaded up to sound alarm circuit and is connected with the acoustic alarm device, and 2. another road connects the electric valve control device that is installed on the gas pipeline main valve by driving circuit.The electric valve control device comprises housing and the main shaft that is installed on the housing, spoon cover, driven gear and the main shaft that can be socketed on the coal gas main valve the shank of the key are connected into one, manually turn-knob also is installed on the main shaft, suit back-moving spring on the main shaft, and be provided with 90 ° of backstays, on housing, also be provided with sealing limit switch and the restraint block that resets of a restriction driven gear anglec of rotation, driven gear and the driving gear engagement that is installed in the motor on the housing.When gas leakage, impression of combustion gas testing circuit and output electric signal, sending into subordinate's signal amplification circuit amplifies, along with the increase of leaking concentration, electric signal after the amplification surpasses weak signal comparator circuit door principal columns of a hall voltage 1., 1. comparator circuit makes optical alarm circuit work, light-emitting component output visual alarm; 1. driving circuit makes air exhausting device (scavenger fan or range hood etc.) work simultaneously.When the gas concentration that leaks reaches setting value when above, 2. strong signal comparator circuit also starts working, its output signal divides two the tunnel, one the tunnel through the sound alarm circuit alerting signal of sounding, 2. another road is exported control signal through driving circuit and is made the work of electric valve control device, turn combustion gas main valve cuts out it.After the combustion gas main valve cut out, combustion gas was no longer leaked, and after room air was pure and fresh gradually, air exhausting device, acoustic-optic alarm also quit work voluntarily.
Owing to adopted technique scheme, the utility model can send the sound and light alarm signal effectively and open air exhausting device, and can in time close main valve when gas leakage, and is safer during use, reliable; On operation circuit, adopted strong, weak two-stage sound and light alarm and air draft, closed measure such as blast tube, science, rationally more on the structure.
(embodiment) is further described the utility model below in conjunction with accompanying drawing.
Fig. 1 is the principle of work block diagram of an embodiment of the utility model.
Fig. 2 is the principle schematic of electric valve control device of the present utility model.
Fig. 3 is the structural drawing of electric valve control device.
Fig. 4 is the shell front elevation that the utility model is installed electronic unit.
The gas leakage automatic protector is made up of combustion gas testing circuit, signal amplification circuit, two-stage comparator circuit, sound light alarming circuit and corresponding audible-visual annunciator, air exhausting device driving circuit and electric valve control device and driving circuit thereof, and its principle of work block diagram as shown in Figure 1.The utility model is provided with self-checking unit in combustion gas testing circuit prime; it is made up of closed test gas and button mechanism; when pressing button 14; gas device can be sent a combustion gas (this mechanism analog gas leakage); element testing after testing; be enough to make the action of gas leakage automatic protector, promptly send sound and light alarm, open air exhausting device and cut off the combustion gas main valve, thereby whether the work of checking gas leakage automatic protector is normal.
Electric valve control device of the present utility model is a motor rotation apparatus, and it receives electric signal, just makes the motor rotation, reverses the gas pipeline main valve, and it is closed.Its principle of work synoptic diagram is seen Fig. 2, and structural drawing is seen Fig. 3.The electric valve control device comprises housing 12 and the main shaft 1 that is installed on the housing, spoon cover 8, the driven gear 6 that can be socketed on the coal gas main valve the shank of the key 9 are connected into one with main shaft 2, manually turn-knob 1 also is installed on the main shaft 2, suit back-moving spring 7 on the main shaft 2, and be provided with 90 ° of backstays 4, on housing 12, also be provided with sealing limit switch 3 and the restraint block 5 that resets of a restriction driven gear anglec of rotation, driving gear 10 engagements on driven gear 6 and the motor 11 that is installed on the housing 12.Driven gear 6 of the present utility model is inclined to one side gear, and promptly there is tooth in 1/4th weeks of driven gear, and all the other 3/4ths weeks are the light circle, can not mesh with driving gear 10.
Briefly introduce the course of work of the utility model electric valve control device below again.When the burner operate as normal, for connecting source of the gas, push knob 1 (driven gear 6 and driving gear 10 are broken away from) and rotation with hand, make its to evolution to, this moment, the shank of the key 9 of spoon cover 8 drive coal gas main valves rotated together, the anglec of rotation is placed restrictions on by the 90 ° of backstays 4 and the restraint block 5 that resets, and knob is just rested on the position of coal gas main valve connection.After openhanded the opening, because action of reset spring makes driven gear 6 automatic and driving gear 10 engagements.If this moment indoor gas leak; and when concentration reaches the acoustic alarm concentration range; the signal that sensor is experienced is amplified by electronic unit; export a control signal; drive motor starts; be driven to rotate with the driven gear 6 of driving gear 10 engagement on the motor; because driven gear 6 joins together with main shaft; so the spoon cover 8 on the main shaft rotates; make main valve the shank of the key half-twist, thereby close main valve, indoorly no longer include gas leakage and occur; the vent fan that indoor original gas leakage is connected is automatically extracted out, so this device has played the wheel leakage protective effect.Behind the shank of the key half-twist, the 90 ° of backstays 4 on the main shaft promote limit switch 3 and cut off motor power, and the electric valve control device restPoses.
Present embodiment is made up of electronic unit and electric valve control device two parts.During installation, the shell of electronic unit directly hangs over (referring to Fig. 4) on the wall; The electric valve control device is provided with toothholder 13, can directly be fixed on the gas piping.
Claims (3)
1. gas leakage automatic protector, comprise the combustion gas testing circuit and the signal amplification circuit that are used to detect gas leakage, the output terminal of signal amplification circuit connect respectively the weak signal comparator circuit 1. and strong signal comparator circuit 2., comparator circuit output terminal is 1. leaded up to optical alarm circuit and is connected with light crossing-signal, and another road is by the 1. external air exhausting device of driving circuit; Comparator circuit output terminal is 2. leaded up to sound alarm circuit and is connected with the acoustic alarm device, 2. another road connects the electric valve control device that is installed on the gas pipeline main valve by driving circuit, it is characterized in that: the electric valve control device comprises housing (12) and is installed in main shaft (2) on the housing, can be socketed in the spoon cover (8) on the coal gas main valve the shank of the key (9), driven gear (6) is connected into one with main shaft (2), manually turn-knob (1) also is installed on the main shaft (2), main shaft (2) is gone up suit back-moving spring (7), and be provided with 90 ° of backstays (4), on housing (12), also be provided with sealing limit switch (3) and the restraint block (5) that resets of a restriction driven gear anglec of rotation, driven gear (6) and driving gear (10) engagement that is installed in the motor (11) on the housing (12).
2. gas leakage automatic protector according to claim 1 is characterized in that: driven gear (6) is inclined to one side gear.
3. gas leakage automatic protector according to claim 2 is characterized in that: the electric valve control device is provided with toothholder (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96230207 CN2275261Y (en) | 1996-07-05 | 1996-07-05 | Automatic protector for gas leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96230207 CN2275261Y (en) | 1996-07-05 | 1996-07-05 | Automatic protector for gas leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2275261Y true CN2275261Y (en) | 1998-02-25 |
Family
ID=33907689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96230207 Expired - Fee Related CN2275261Y (en) | 1996-07-05 | 1996-07-05 | Automatic protector for gas leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2275261Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494443A (en) * | 2014-12-11 | 2015-04-08 | 重庆凯瑞燃气汽车有限公司 | Intelligent vehicle gas safety control device and control method |
-
1996
- 1996-07-05 CN CN 96230207 patent/CN2275261Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494443A (en) * | 2014-12-11 | 2015-04-08 | 重庆凯瑞燃气汽车有限公司 | Intelligent vehicle gas safety control device and control method |
| CN104494443B (en) * | 2014-12-11 | 2017-02-01 | 重庆凯瑞燃气汽车有限公司 | Intelligent vehicle gas safety control device and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 1998.02.25 |