CN205027390U - Explosion -proof flow switch detecting system - Google Patents
Explosion -proof flow switch detecting system Download PDFInfo
- Publication number
- CN205027390U CN205027390U CN201520727864.3U CN201520727864U CN205027390U CN 205027390 U CN205027390 U CN 205027390U CN 201520727864 U CN201520727864 U CN 201520727864U CN 205027390 U CN205027390 U CN 205027390U
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- China
- Prior art keywords
- flow switch
- explosion
- flow
- utility
- fiber
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- 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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- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measuring Volume Flow (AREA)
Abstract
The utility model provides an explosion -proof flow switch detecting system which characterized in that it including install the hazardous area take flow switch, the optical fiber amplifier who installs in the safety zone of optic fibre output and be used for flow switch and optical fiber amplifier between the optical cable of connection. The utility model has the advantages of: 1 the utility model discloses utilizing the function that light can transmit in optical fiber, connecting as the signal transmission between flow switch and the control system, reach the connection that does not have the electricity among this flow switch detecting system, fundamentally has overcome the various problems that electric signal transmission leaded to, has changed the signal transmission mode of traditional electricity connection to reach the explosion -proof requirement of using in zero district he yi district in the explosion -proof place, 2 the utility model discloses any device damages can not cause and the incident such as fires among the detecting system, 3 the utility model discloses reached flow measurement's safe and reliable and high anti jamming effect 4 the utility model has the advantages of the installation is maintained portably.
Description
(1) technical field:
The utility model relates in conveying liquid, detect the sensor of flow, particularly be a kind of flow switch detection system that may be used for explosion-proof place.
(2) background technology
At present, flow switch market generally sold and uses, is generally mounted on the pipeline of conveying liquid, for the presence or absence of fluid flow in testing pipes, then by output switch amount signal transmission to control system.Its major defect is the connected mode adopting electric signal between flow switch and control system.It, when forming explosion-proof place detection system, must install the spacer assembly of electric signal additional.Therefore very high to the reliability requirement of electric signal isolation device, if this device breaks down, great security incident will be caused.In addition, owing to having installed spacer assembly additional, significantly limit the electricity entering dangerous explosion-proof place electric signal, so antijamming capability is very poor.
(3) utility model content:
The purpose of this utility model is to provide a kind of explosion-proof flow switch detection system, it can overcome the deficiencies in the prior art, utilize the function that light can transmit in light transmitting fiber, connect as the Signal transmissions between flow switch and control system, make the connection not having electricity in this flow switch detection system, thus reach the requirement of explosion proof that can use in explosion-proof place zero district and a district.
The technical solution of the utility model is: a kind of explosion-proof flow switch detection system, it is characterized in that it comprise be arranged on explosive area band optical fiber export flow switch, be arranged on the fiber amplifier of place of safety and the optical cable for the connection between flow switch and fiber amplifier.
After powered up, the light exported by transmitting terminal is by the light transmitting fiber transmission of optical cable, and when there is no flow, light is radiated on flow switch and is obstructed for described fiber amplifier, and fiber amplifier output signal is off state; When there being flow, flow switch no longer blocks light path, and the light exported by fiber amplifier transmitting terminal is radiated at fibre-optic receiving end by the light transmitting fiber of optical cable, and fiber amplifier output signal is opening state.
The flow switch that described band optical fiber exports comprises target-type flow baffle plate, connecting rod, rotating shaft and optical fiber shadow shield; Described target-type flow baffle plate is connected by connecting rod with optical fiber shadow shield, and described connecting rod is connected with rotating shaft and can around axis of rotation.
The course of work of the present utility model: during work, target-type flow baffle plate is arranged on liquid-transport pipe-line; A. when there is no liquid flow in pipeline: target-type flow baffle plate, connecting rod, rotating shaft, optical fiber shadow shield all remain on stationary state; After powered up, the light exported by transmitting terminal is radiated on optical fiber shadow shield by the light transmitting fiber of optical cable and is obstructed fiber amplifier, and fiber amplifier output signal is off state, does not namely have flow in pipeline; B. when there being liquid flow in pipeline: target-type flow baffle plate is produced displacement by liquid-driving, the connecting rod be connected with target-type flow baffle plate drives optical fiber shadow shield also to produce displacement around rotating shaft, now optical fiber shadow shield is due to displacement, no longer block light path, the light exported by fiber amplifier transmitting terminal is radiated at fibre-optic receiving end by the light transmitting fiber of optical cable, fiber amplifier output signal is opening state, namely has flow in pipeline; C. detected by the break-make of light path, just can reach the Detection results carried out accurately with or without flow in pipeline.
Superiority of the present utility model: 1, the utility model utilizes the function that light can transmit in light transmitting fiber, connect as the Signal transmissions between flow switch and control system, reach in this flow switch detection system the connection not having electricity, fundamentally overcome the various problems that electric signal transmission causes, change the signal transmission form that traditional electrical connects, thus reach the requirement of explosion proof used in explosion-proof place zero district and a district; 2, in the utility model detection system, any device damage all can not cause security incidents such as firing; 3, the utility model reaches the safe and reliable of flow detection and the jamproof effect of height 4, the utility model have the easy advantage of installation and maintenance.
(4) accompanying drawing illustrates:
The schematic diagram of Fig. 1 a kind of explosion-proof flow switch detection system involved by the utility model;
With the flow switch structural representation that optical fiber exports in Fig. 2 a kind of explosion-proof flow switch detection system involved by the utility model;
Wherein, 1: target-type flow baffle plate; 2: connecting rod; 3: rotating shaft; 4: optical fiber shadow shield; 5: light transmitting fiber; 6: the flow switch that band optical fiber exports; 7: optical cable; 8: fiber amplifier.
(5) embodiment:
Embodiment: a kind of explosion-proof flow switch detection system (see Fig. 1), it is characterized in that it comprise be arranged on explosive area band optical fiber export flow switch 6, be arranged on the fiber amplifier 8 of place of safety and the optical cable 7 for the connection between flow switch and fiber amplifier.
After powered up, the light exported by transmitting terminal is transmitted by the light transmitting fiber 5 of optical cable 7 described fiber amplifier 8, and when there is no flow, light is radiated on flow switch and is obstructed, and fiber amplifier 8 outputs signal as off state; When there being flow, flow switch no longer blocks light path, and the light exported by fiber amplifier 8 transmitting terminal is radiated at fibre-optic receiving end by the light transmitting fiber 5 of optical cable 7, and fiber amplifier 8 outputs signal as opening state.(see Fig. 2)
The flow switch 6 that described band optical fiber exports comprises target-type flow baffle plate 1, connecting rod 2, rotating shaft 3 and optical fiber shadow shield 4; Described target-type flow baffle plate 1 is connected by connecting rod 2 with optical fiber shadow shield 4, and described connecting rod 2 is connected with rotating shaft 3 and can rotates around rotating shaft 3.(see Fig. 2)
The course of work of the present embodiment: during work, target-type flow baffle plate 1 is arranged on liquid-transport pipe-line; A. when there is no liquid flow in pipeline: target-type flow baffle plate 1, connecting rod 2, rotating shaft 3, optical fiber shadow shield 4 all remain on stationary state; After powered up, the light exported by transmitting terminal is radiated on optical fiber shadow shield 4 by the light transmitting fiber 5 of optical cable 7 and is obstructed fiber amplifier 8, and fiber amplifier 8 outputs signal as off state, does not namely have flow in pipeline; B. when there being liquid flow in pipeline: target-type flow baffle plate 1 is produced displacement by liquid-driving, the connecting rod 2 be connected with target-type flow baffle plate 1 drives optical fiber shadow shield 4 also to produce displacement around rotating shaft 3, now optical fiber shadow shield is due to displacement, no longer block light path, the light exported by fiber amplifier 8 transmitting terminal is radiated at fibre-optic receiving end by the light transmitting fiber 5 of optical cable 7, fiber amplifier 8 outputs signal as opening state, namely has flow in pipeline; C. detected by the break-make of light path, just can reach the Detection results carried out accurately with or without flow in pipeline.
Claims (3)
1. an explosion-proof flow switch detection system, it is characterized in that it comprise be arranged on explosive area band optical fiber export flow switch, be arranged on the fiber amplifier of place of safety and the optical cable for the connection between flow switch and fiber amplifier.
2. a kind of explosion-proof flow switch detection system according to claim 1, it is characterized in that described fiber amplifier after powered up, the light exported by transmitting terminal is by the light transmitting fiber transmission of optical cable, when there is no flow, light is radiated on flow switch and is obstructed, and fiber amplifier output signal is off state; When there being flow, flow switch no longer blocks light path, and the light exported by fiber amplifier transmitting terminal is radiated at fibre-optic receiving end by the light transmitting fiber of optical cable, and fiber amplifier output signal is opening state.
3. a kind of explosion-proof flow switch detection system according to claim 1 or 2, is characterized in that the flow switch that described band optical fiber exports comprises target-type flow baffle plate, connecting rod, rotating shaft and optical fiber shadow shield; Described target-type flow baffle plate is connected by connecting rod with optical fiber shadow shield, and described connecting rod is connected with rotating shaft and can around axis of rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520727864.3U CN205027390U (en) | 2015-09-18 | 2015-09-18 | Explosion -proof flow switch detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520727864.3U CN205027390U (en) | 2015-09-18 | 2015-09-18 | Explosion -proof flow switch detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205027390U true CN205027390U (en) | 2016-02-10 |
Family
ID=55259913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520727864.3U Expired - Fee Related CN205027390U (en) | 2015-09-18 | 2015-09-18 | Explosion -proof flow switch detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205027390U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470351A (en) * | 2019-09-10 | 2019-11-19 | 贵阳学院 | A kind of gear type optic flow sensor and its flow rate testing methods |
-
2015
- 2015-09-18 CN CN201520727864.3U patent/CN205027390U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470351A (en) * | 2019-09-10 | 2019-11-19 | 贵阳学院 | A kind of gear type optic flow sensor and its flow rate testing methods |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20160918 |