CN204988664U - Heat exchanger blocks up detection device - Google Patents
Heat exchanger blocks up detection device Download PDFInfo
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- CN204988664U CN204988664U CN201520487535.6U CN201520487535U CN204988664U CN 204988664 U CN204988664 U CN 204988664U CN 201520487535 U CN201520487535 U CN 201520487535U CN 204988664 U CN204988664 U CN 204988664U
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Abstract
The utility model discloses a heat exchanger blocks up detection device, including a PRESSURE DETECTOR, the 2nd PRESSURE DETECTOR, comparator, controller and alarm, the empty atmospheric pressure difference switch of a PRESSURE DETECTOR and the 2nd PRESSURE DETECTOR set up the air intake and the air outlet of taking a breath in air heat respectively, and the output of the two all is connected with the input of comparator, the output connection director's of comparator input. The utility model discloses the both ends increased pressure detection device of heat exchanger blocks up detection device heat exchanger on current loose damping machine heated air circulation pipeline when the both ends pressure differential of heat exchanger reaches 100pa on loose damping machine heated air circulation pipeline, sends the suggestion of reporting to the police, and the expression heat exchanger needs to wash, simultaneously can cut off the power supply of loose damping machine. Behind the increased pressure detection device of heat exchanger both ends, ensure the hot -blast flow stability of loose damping machine on this loose damping machine heated air circulation pipeline, have very strong using value.
Description
Technical field
The utility model relates to leaf tobacco production apparatus field, particularly relates to heat interchanger blockage detector.
Background technology
At present, in loosening and gaining moisture process in leaf tobacco production process, all, by hot air circulating pipe, loose, humidification moisture regain is carried out to tobacco leaf, and on former hot air circulating pipe in hot air circulation process, some crumbled tobaccos in loosening steam conditioner and dust can be brought in heat interchanger along with hot air duct, As time goes on, when the tobacco leaf accumulation in heat exchanger is more, namely can affect air output and the rate of heat exchange of hot blast and cold wind in heat exchanger, finally cause the effect affecting loosening and gaining moisture of tobacco.All regularly safeguard in existing leaf tobacco production process, but the operating frequency of some cycles inner machine changes with the cleaning cycle of heat exchanger that difference namely can cause of the attribute of tobacco leaf own, and once cleaning cycle shortens, and fail to clear up it in time, then can have a strong impact on quality that is a collection of or many batches of tobacco leaves, minimum is heavy industry, and serious then can reduce quality of tobacco shreds.
Utility model content
The purpose of this utility model is to provide a kind of heat interchanger blockage detector, can detect the flue dust in heat exchanger and crumbled tobacco accumulation, quit work when flue dust and crumbled tobacco accumulation impact send umbrella to get damp again to pipe tobacco, carry out alarm workman and carry out reason, and then ensure that heat exchanger normally works.
The technical solution adopted in the utility model is:
Heat interchanger blockage detector, comprise the first pressure detector, the second pressure detector, comparer, controller and alarm, the first described pressure detector and the second pressure detector air pressure difference switch are separately positioned on air inlet and the air outlet of the ventilation of air heat, and the output terminal of the two is all connected with the input end of comparer, the input end of the output terminal connection control device of comparer, the output terminal of controller connects the input end of alarm, is connected with the power control circuit of loosening steam conditioner with the output terminal of Time Controller.
The first described pressure detector, the second pressure detector, comparer, controller can be replaced by air pressure difference switch, the negative pressure place of described air pressure difference switch is arranged on the air inlet of air heat ventilation, the malleation place of air pressure difference switch is arranged on the air outlet of air heat ventilation, and described air pressure difference switch electric shock circuit is connected with the power control circuit of loosening steam conditioner with alarm respectively.
The difference of the first described pressure detector and the second pressure detector setting detected value is 100p
a.
The first described pressure detector, the second pressure detector are digital pressure sensor, output digit signals.
Described comparer is simple two bit comparators, and described controller is CPU.
The two ends of the utility model heat interchanger blockage detector heat interchanger on existing loosening steam conditioner hot air circulating pipe increase pressure-detecting device, when on loosening steam conditioner hot air circulating pipe, the pressure at two ends difference of heat interchanger reaches 100p
atime, send alarm, represent that heat interchanger needs cleaning; The power supply of loosening steam conditioner can be cut off simultaneously.After heat interchanger two ends increase pressure-detecting device on this loosening steam conditioner hot air circulating pipe, guarantee the stability of flow of loosening steam conditioner hot blast, there is very strong using value.
Accompanying drawing explanation
Fig. 1 is the scheme of installation of air pressure difference switch described in the utility model;
Fig. 2 is schematic block circuit diagram of the present utility model.
Embodiment
As shown in Figure 1, heat interchanger blockage detector, comprise the first pressure detector, the second pressure detector, comparer, controller and alarm, the first described pressure detector and the second pressure detector pressure difference switch are separately positioned on air inlet and the air outlet of the ventilation of air heat, and the output terminal of the two all connects the input end of comparer, the input end of the output terminal connection control device of comparer, the output terminal of controller connects the input end of alarm, is connected with the power control circuit of loosening steam conditioner with the output terminal of Time Controller.First pressure detector described in the utility model, the second pressure detector, comparer, controller can be replaced by pressure difference switch, because air pressure difference switch has two to detect mouth, the i.e. detection mouth of positive-pressure detection port and negative pressure, is equivalent to the first pressure detector and the second pressure detector; Its cavity is also divided into malleation chamber and negative pressure cavity thus, air pressure difference switch two is isolated with epithelium between chamber, when there being pressure source, epithelium moves and touches microswitch thus reach ON/OFF object, air pressure difference switch is provided with dial, the pressure size changing spring when regulating makes the starting point of blast switch and Burnout (ON point and OFF point) change, its epithelium and dial are equivalent to comparer and controller, and sensitiveer.The sampling of usual pressure difference switch adopts negative-pressure detection port, and sampler is mounted in the negative pressuren zone of Forced discharge fan spiral case.The sample tap of sampler is the pipe in oblique angle, and it and wind direction are certain angle, along with the force value detected by the change of angle and the change of wind speed is also different.And if adopt pressure detector, then arrange without the need to inclination angle; Described comparer is two bit comparators, and described controller is CPU, directly can access the control system of loosening steam conditioner.The first described pressure detector, the second pressure detector are digital pressure sensor, and output digit signals coordinates with two bit comparators, and adopt pressure detector precision higher than employing air pressure difference switch, but cost is higher, rely on electric energy, so the two respectively has advantage.
The negative pressure place of described air pressure difference switch is arranged on the air inlet of air heat ventilation, the malleation place of air pressure difference switch is arranged on the air outlet of air heat ventilation, and described air pressure difference switch electric shock circuit is connected with the power control circuit of loosening steam conditioner with alarm respectively.The difference of the first described pressure detector and the second pressure detector setting detected value is 100p
a.
Claims (5)
1. heat interchanger blockage detector, it is characterized in that: comprise the first pressure detector, the second pressure detector, comparer, controller and alarm, the first described pressure detector and the second pressure detector air pressure difference switch are separately positioned on air inlet and the air outlet of the ventilation of air heat, and the output terminal of the two is all connected with the input end of comparer, the input end of the output terminal connection control device of comparer, the output terminal of controller connects the input end of alarm, is connected with the power control circuit of loosening steam conditioner with the output terminal of Time Controller.
2. heat interchanger blockage detector according to claim 1, it is characterized in that: the first described pressure detector, the second pressure detector, comparer, controller can be replaced by air pressure difference switch, the negative pressure place of described air pressure difference switch is arranged on the air inlet of air heat ventilation, the malleation place of air pressure difference switch is arranged on the air outlet of air heat ventilation, and described air pressure difference switch electric shock circuit is connected with the power control circuit of loosening steam conditioner with alarm respectively.
3. heat interchanger blockage detector according to claim 2, is characterized in that: the difference of the first described pressure detector and the second pressure detector setting detected value is 100p
a.
4. heat interchanger blockage detector according to claim 2, is characterized in that: the first described pressure detector, the second pressure detector are digital pressure sensor, output digit signals.
5. heat interchanger blockage detector according to claim 2, is characterized in that: described comparer is simple two bit comparators, and described controller is CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520487535.6U CN204988664U (en) | 2015-07-08 | 2015-07-08 | Heat exchanger blocks up detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520487535.6U CN204988664U (en) | 2015-07-08 | 2015-07-08 | Heat exchanger blocks up detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204988664U true CN204988664U (en) | 2016-01-20 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520487535.6U Active CN204988664U (en) | 2015-07-08 | 2015-07-08 | Heat exchanger blocks up detection device |
Country Status (1)
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| CN (1) | CN204988664U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976306A (en) * | 2017-11-13 | 2018-05-01 | 中国电子科技集团公司第十研究所 | A kind of regenerator screening plant and method |
| CN108405497A (en) * | 2018-02-12 | 2018-08-17 | 张顺元 | A kind of remover of pipeline endoparticle sediment |
| CN110906512A (en) * | 2018-09-18 | 2020-03-24 | 青岛海尔空调器有限总公司 | Air conditioner heat exchanger monitoring method and device, air conditioner, computer equipment and storage medium |
| CN110987407A (en) * | 2019-12-31 | 2020-04-10 | 无锡锡州机械有限公司 | Detection control method, control device and system for cast aluminum heat exchanger |
-
2015
- 2015-07-08 CN CN201520487535.6U patent/CN204988664U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976306A (en) * | 2017-11-13 | 2018-05-01 | 中国电子科技集团公司第十研究所 | A kind of regenerator screening plant and method |
| CN108405497A (en) * | 2018-02-12 | 2018-08-17 | 张顺元 | A kind of remover of pipeline endoparticle sediment |
| CN110906512A (en) * | 2018-09-18 | 2020-03-24 | 青岛海尔空调器有限总公司 | Air conditioner heat exchanger monitoring method and device, air conditioner, computer equipment and storage medium |
| CN110987407A (en) * | 2019-12-31 | 2020-04-10 | 无锡锡州机械有限公司 | Detection control method, control device and system for cast aluminum heat exchanger |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 450000 Yulin South Road, Henan, Zheng Dong, No. 16 South Road, Zhengzhou Patentee after: China Tobacco Henan Industrial Co., Ltd. Address before: 450000 Zhengzhou agricultural road, Henan, No. 29 Patentee before: China Tobacco Henan Industrial Co., Ltd. |