JPH0627673B2 - Float type temperature sensor - Google Patents
Float type temperature sensorInfo
- Publication number
- JPH0627673B2 JPH0627673B2 JP61261424A JP26142486A JPH0627673B2 JP H0627673 B2 JPH0627673 B2 JP H0627673B2 JP 61261424 A JP61261424 A JP 61261424A JP 26142486 A JP26142486 A JP 26142486A JP H0627673 B2 JPH0627673 B2 JP H0627673B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature sensor
- float
- temperature
- water
- bottom plate
- 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 - Lifetime
Links
Landscapes
- Level Indicators Using A Float (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、液面から一定深さの液体温度を測定するフロ
ート式温度センサーに関するものである。TECHNICAL FIELD The present invention relates to a float type temperature sensor for measuring a liquid temperature at a constant depth from a liquid surface.
例えば、クーリングタワーを有する冷暖房設備において
は、そのクーリングタワーに循環する水の温度によって
各設備機器を制御するため、循環用水槽に水温測定用温
度センサーを設けている。また、種々の製品製造ライン
において使用する水は常時一定温度に保つ必要があるた
め、その水槽内に水温設定用温度センサーを設け、この
センサーの測定信号に基づき加熱等の処理を行ってい
る。For example, in an air conditioning equipment having a cooling tower, a water temperature measuring temperature sensor is provided in a circulating water tank in order to control each equipment device according to the temperature of water circulating in the cooling tower. Further, since water used in various product manufacturing lines needs to be kept at a constant temperature at all times, a water temperature setting temperature sensor is provided in the water tank, and processing such as heating is performed based on the measurement signal of this sensor.
これらに使われている従来の温度センサーは、第２図に
示すように、水槽１７壁１８内面にブラケット１９を介
して温度センサー４を設け、このセンサー４の感温部４
ｃを水面下の所定位置に浸し、リード線２０を介し、セ
ンサー４の水温測定信号を設備の制御部に導いている。As shown in FIG. 2, the conventional temperature sensor used for these is provided with the temperature sensor 4 on the inner surface of the wall 18 of the water tank 17 via the bracket 19, and the temperature sensing unit 4 of the sensor 4 is provided.
The c is immersed in a predetermined position under the water surface, and the water temperature measurement signal of the sensor 4 is guided to the control section of the facility via the lead wire 20.
しかしながら、水の蒸発、飛散、各設備機器の給水・戻
水などにより、水槽１７の水位は常に一定でなく変位す
る。したがって、前記従来の温度センサー４は壁１８に
固定されているため、前記変位が大きく、同図鎖線のご
とく、水位が下がり過ぎると、温度センサー４の感温部
４ｃが水面から外れて空気中に露出し、一方、水位が、
上がり過ぎると、温度センサー４の本体が水に浸って短
絡し、水温が正確に測定できなくなる。However, the water level in the water tank 17 is not always constant but is displaced due to water evaporation, splashing, water supply / return of each equipment and the like. Therefore, since the conventional temperature sensor 4 is fixed to the wall 18, the displacement is large, and if the water level is too low as shown by the chain line in the figure, the temperature sensing portion 4c of the temperature sensor 4 is dislocated from the water surface and the On the other hand, while the water level
If the temperature rises too much, the body of the temperature sensor 4 will be immersed in water and short-circuited, making it impossible to measure the water temperature accurately.
また、多くの温度センサー４は一部が外気に露出してい
るため、保護管４ｂ、感温部４ｃに雪、氷が付着するこ
とがあり、感温部４ｃがその影響を受けて、水温が正確
に測定できなくなる。Further, since many temperature sensors 4 are partially exposed to the outside air, snow or ice may adhere to the protective tube 4b and the temperature sensing unit 4c, and the temperature sensing unit 4c is affected by the influence of water temperature. Cannot be measured accurately.
この様に測定不能又は誤測定状態になると、温度センサ
ー４とクーリングタワー、制御部の連動による水槽１７
の温度制御ができないため、この水を使用している機器
の故障、製品の不良等の原因となる。When the measurement cannot be performed or the measurement is erroneous in this way, the temperature sensor 4 and the cooling tower and the control unit are interlocked with each other to make the water tank 17
Since it is not possible to control the temperature of the above, it may cause a failure of the equipment using this water or a defective product.
このため、従来から、実開昭６１−５０２３４号公報等
に開示のごとく、液面に浮くフロートに温度センサー４
を取付け、前記フロートには外部への測定温度伝達手段
を設けたフロート式温度センサーが種々考案されてい
る。Therefore, conventionally, as disclosed in Japanese Utility Model Laid-Open No. 61-50234, the temperature sensor 4 is attached to the float floating on the liquid surface.
Various float type temperature sensors have been devised, in which the float is provided with means for transmitting measured temperature to the outside.
しかしながら、これらの従来のフロート式温度センサー
は、温度センサー本体及び測定温度伝達手段が露出して
いるため、太陽光等の外気雰囲気、及び液の飛散等によ
って故障及び誤動作が生じる恐れがあった。However, in these conventional float type temperature sensors, since the temperature sensor main body and the measured temperature transmitting means are exposed, there is a possibility that malfunction and malfunction may occur due to the outside air atmosphere such as sunlight and the scattering of liquid.
本発明は、以上の点に鑑み、温度センサー本体及び測定
温度伝達手段の故障及び誤動作をなくすことを課題とす
る。In view of the above points, an object of the present invention is to eliminate failure and malfunction of the temperature sensor body and the measured temperature transmitting means.
上記課題を解決するために、本発明にあっては、液面に
浮くフロートに温度センサーを取付け、前記フロートに
は外部への測定運温度達手段を設けたフロート式温度セ
ンサーであって、 上記フロートは、有蓋の水密な函体のフロート本体と、
そのフロート本体に着脱可能に嵌めた発泡スチロール袋
カバーとから成り、前記函体の底板は、その中央が内方
に膨出して下面の凹部空間が形成されており、 上記温度センサーは、その本体下面に下方に延びる保護
管を有し、その保護管下端に感温部を設けて成り、前記
温度センサー本体は、上記函体の底板膨出部上面に固定
され、保護管はその底板膨出部を水密に貫通している構
成としたのである。In order to solve the above-mentioned problems, in the present invention, a temperature sensor is attached to a float that floats on the liquid surface, and the float type temperature sensor is provided with a means for reaching the measured temperature to the outside. The float is a float body of a watertight box with a lid,
The bottom body of the box body is formed so that the center thereof bulges inward to form a recessed space on the lower surface, and the temperature sensor has a lower surface of the body. Has a protective tube extending downwardly, and a temperature-sensing portion is provided at the lower end of the protective tube, the temperature sensor body is fixed to the upper surface of the bottom plate bulging portion of the box, and the protective tube has a bottom plate bulging portion. It is configured to penetrate through in a watertight manner.
このように構成する本発明に係るフロート式温度センサ
ーは、液位が変化すると、その液面の変化に応じて温度
センサーも変位して、常に一定深さの液体温度が測定さ
れる。In the float type temperature sensor according to the present invention configured as described above, when the liquid level changes, the temperature sensor is also displaced according to the change in the liquid level, and the liquid temperature at a constant depth is always measured.
この作用時、温度センサー本体及び測定温度伝達手段
は、水密な函体内にあり、かつ、発泡スチロール製の断
熱カバーによって覆われているため、太陽光等の外気の
影響も受けず、液の飛散を受けることもない。During this operation, the temperature sensor body and the measured temperature transmitting means are in a watertight box and covered with a heat insulation cover made of Styrofoam, so they are not affected by outside air such as sunlight and the liquid is scattered. I do not receive it.
また、温度センサー本体を設けた膨出部下面には、凹部
空間によって空気層が形成され、この空気層によって断
熱及び水密性が向上される。Further, an air layer is formed by the recessed space on the lower surface of the bulging portion provided with the temperature sensor body, and the heat insulation and watertightness are improved by this air layer.
フロート表面が藻などにより汚損すれば、カバーを取替
える。If the surface of the float is soiled by algae, replace the cover.
以下、本発明の実施例を添付図面第１図に基づいて説明
する。An embodiment of the present invention will be described below with reference to FIG.
図は本発明に係るフロート式温度センサーの正面概略断
面図で、フロート本体１は塩化ビニルの函体から成り、
その底板２の中央部が内部に膨出し、この中央に孔３が
突設してある。フロート本体１上面はシール材１３を介
在してネジ１４により蓋９を閉塞し、この本体１及び蓋
９に発泡スチロールから成るカバー１０が冠着されてい
る。このカバー１０は、浮力を与える作用に加え、藻な
どによるフロート本体１の汚損を防止し、さらに、容易
に取替え得る利点がある。The figure is a schematic front sectional view of a float type temperature sensor according to the present invention. The float body 1 is made of a vinyl chloride box,
The central portion of the bottom plate 2 bulges inward, and a hole 3 is provided at the center of the bulge. The upper surface of the float body 1 is covered with a sealing material 13 to close a lid 9 with a screw 14, and a cover 10 made of expanded polystyrene is attached to the body 1 and the lid 9. The cover 10 has an advantage that, in addition to the function of giving buoyancy, the float main body 1 is prevented from being contaminated by algae or the like, and can be easily replaced.
温度センサー４は従来と同一構造のものであり、扁平椀
状本体４ａと、本体４ａの中央から下方に所要長さ延び
る保護管４ｂと、保護管４ｂの下端の感温部４ｃと、本
体４ｂの蓋４ｄとから成り、保護管４ｂを前記孔３に挿
通し、ねじ７により、本体４ａをパッキング６を介在し
底板２に水密に固着してフロート本体１に取付けられ
る。温度センサー４のリード線２０は、支持線付リード
線８と接続部１２で接続され、このリード線８は蓋９、
カバー１０の孔１１をシール材１５を介して水密に通っ
てフロート外に導出されており、このリード線８はクー
リングタワー等の制御部に接続されている。The temperature sensor 4 has the same structure as the conventional one, and has a flat bowl-shaped main body 4a, a protective tube 4b extending a required length downward from the center of the main body 4a, a temperature sensing portion 4c at the lower end of the protective tube 4b, and a main body 4b. The protective tube 4b is inserted into the hole 3 and the main body 4a is attached to the float main body 1 in a watertight manner by the screw 7 to the bottom plate 2 with the packing 6 interposed therebetween. The lead wire 20 of the temperature sensor 4 is connected to the lead wire 8 with a support wire at the connecting portion 12, and the lead wire 8 is covered with a lid 9,
The hole 11 of the cover 10 is led out to the outside of the float through the seal member 15 in a watertight manner, and the lead wire 8 is connected to a control unit such as a cooling tower.
なお、保護管４ｂの下部にはドーナツ状のおもり１６を
嵌着し、このおもり１６によってフロートの安定化を図
り、風、波などによる横転を防ぐ。A doughnut-shaped weight 16 is fitted to the lower portion of the protection tube 4b, and the weight 16 stabilizes the float to prevent rollover due to wind, waves, or the like.
実施例は以上のように構成されており、図に示すよう
に、水槽１７内にこの実施例を浮かべると、水面の変化
に従って上下動し、常に温度センサー４の感温部４ｃは
水面下所要位置にあって水温を測定し、この測定信号は
リード線８を介して制御部に伝達される。The embodiment is configured as described above, and when the embodiment is floated in the water tank 17, as shown in the figure, it moves up and down according to the change of the water surface, and the temperature sensing part 4c of the temperature sensor 4 is always required under the water surface. The water temperature is measured at the position, and this measurement signal is transmitted to the control unit via the lead wire 8.
この作用時、前記カバー１０は発泡スチロールの断熱材
で構成しているため、フロート内部が太陽の輻射熱、外
気温による温度上昇を防止すると同時に外気温、水温の
変化による結露を防止し、温度センサー４の測定が正確
におこなわれる。At the time of this action, since the cover 10 is made of styrofoam heat insulating material, the inside of the float prevents radiant heat of the sun and temperature rise due to outside air temperature, and at the same time prevents dew condensation due to changes in outside air temperature and water temperature. Is accurately measured.
また、フロート本体１の底板２中央部を内方に膨出して
この部分に温度センサー４を設けたので、浮かした際、
その膨出部内に空間Ｓが生じて孔３に至る（飛散する）
水も少なくなる。このため、孔３を通してフロート本体
１内への水の侵入は皆無なものとなる。Further, since the center portion of the bottom plate 2 of the float body 1 bulges inward and the temperature sensor 4 is provided at this portion,
A space S is generated in the bulging portion to reach (scatter) the hole 3.
Water will also be reduced. Therefore, no water enters the float body 1 through the hole 3.
なお、測定温度伝達手段としては、リード線８よる他、
太陽電池、乾電池等を電源とする発信機をフロート本体
１内に搭載し、この発信機により制御部に測定信号を無
線伝達することもできる。As the measured temperature transmitting means, other than the lead wire 8,
It is also possible to mount a transmitter using a solar battery, a dry battery or the like as a power source in the float main body 1 and wirelessly transmit a measurement signal to the control unit by this transmitter.
本発明は以上のように構成し、フロート内に温度センサ
ー本体及び測定温度伝達手段を水密かつ断熱性を担保し
て設けたので、故障も少なく、測定誤差も生じにくいも
のとなる。Since the present invention is configured as described above and the temperature sensor main body and the measured temperature transmitting means are provided inside the float while ensuring watertightness and heat insulation, there are few failures and measurement errors are less likely to occur.
また、断熱性を付与するカバーは取替えが可能であり、
このカバーを取替えるだけで、温度センサー本体等の取
外しを伴うことなく、フロート表面の損傷の修理を行う
ことができる。Also, the cover that gives heat insulation is replaceable,
By simply replacing this cover, damage to the float surface can be repaired without removing the temperature sensor body or the like.
第１図は本発明に係るフロート式温度センサーの一実施
例の概略断面図、第２図は従来例の概略断面図である。 １……フロート本体、４……温度センサー、４ｃ……感
温部、８……リード線、１０……カバー、１７……水
槽。FIG. 1 is a schematic sectional view of an embodiment of a float type temperature sensor according to the present invention, and FIG. 2 is a schematic sectional view of a conventional example. 1 ... Float body, 4 ... Temperature sensor, 4c ... Temperature sensing part, 8 ... Lead wire, 10 ... Cover, 17 ... Water tank.
Claims (1)
付け、前記フロートには外部への測定温度伝達手段を設
けたフロート式温度センサーであって、 上記フロートは、有蓋の水密な函体のフロート本体１
と、そのフロート本体１に着脱可能に嵌めた発泡スチロ
ール袋カバー１０とから成り、前記函体の底板２は、そ
の中央が内方に膨出して下面の凹部空間Ｓが形成されて
おり、 上記温度センサー４は、その本体４ａ下面に下方に延び
る保護管４ｂを有し、その保護管４ｂ下端に感温部４ｃ
を設けて成り、前記温度センサー本体４ａは、上記函体
の底板２膨出部上面に固定され、保護管４ｂはその底板
２膨出部を水密に貫通していることを特徴とするフロー
ト式温度センサー。1. A float type temperature sensor in which a temperature sensor 4 is attached to a float floating on a liquid surface, and the float is provided with a measuring temperature transmitting means to the outside, wherein the float is a watertight box with a lid. Float body 1
And a styrofoam bag cover 10 which is detachably fitted to the float body 1. The bottom plate 2 of the box body has a center portion bulging inward to form a recessed space S on the lower surface. The sensor 4 has a protective tube 4b extending downward on the lower surface of the main body 4a, and the temperature sensing portion 4c is provided at the lower end of the protective tube 4b.
The temperature sensor body 4a is fixed to the upper surface of the bulging portion of the bottom plate 2 of the box, and the protection tube 4b penetrates the bulging portion of the bottom plate 2 in a watertight manner. Temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61261424A JPH0627673B2 (en) | 1986-10-31 | 1986-10-31 | Float type temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61261424A JPH0627673B2 (en) | 1986-10-31 | 1986-10-31 | Float type temperature sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63115022A JPS63115022A (en) | 1988-05-19 |
| JPH0627673B2 true JPH0627673B2 (en) | 1994-04-13 |
Family
ID=17361681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61261424A Expired - Lifetime JPH0627673B2 (en) | 1986-10-31 | 1986-10-31 | Float type temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0627673B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2771315B1 (en) * | 1997-11-24 | 1999-12-31 | Christian Gillet | RAPID EVAPORATOR OF FERMENTATION JUICE FOR PUBLIC WASTE OF HOUSEHOLD WASTE |
| DE19913417C1 (en) | 1999-03-25 | 2000-09-14 | Wagner Hans | Sterilization container |
| JP4716841B2 (en) * | 2005-10-14 | 2011-07-06 | 中国電力株式会社 | Equipment for measuring seawater or water properties in water |
| CN109406005A (en) * | 2018-09-27 | 2019-03-01 | 国家能源投资集团有限责任公司 | Cooling tower leaving water temperature measuring device and method |
| CN112326505B (en) * | 2020-10-28 | 2022-06-21 | 西安热工研究院有限公司 | A system for measuring the spray density of cooling tower groups and the distribution of water temperature after cooling |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5535542Y2 (en) * | 1974-12-27 | 1980-08-22 | ||
| JPS52128188A (en) * | 1976-04-20 | 1977-10-27 | Matsushita Electric Ind Co Ltd | Bodily temperature detector |
| JPS5546215U (en) * | 1978-09-19 | 1980-03-26 | ||
| JPS58195845U (en) * | 1982-06-22 | 1983-12-26 | 岡野 博 | bath temperature alarm |
| JPS6150234U (en) * | 1984-09-06 | 1986-04-04 |
-
1986
- 1986-10-31 JP JP61261424A patent/JPH0627673B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63115022A (en) | 1988-05-19 |
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