JP2006057571A - Water level detecting unit for submersible pump - Google Patents

Water level detecting unit for submersible pump Download PDF

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JP2006057571A
JP2006057571A JP2004242005A JP2004242005A JP2006057571A JP 2006057571 A JP2006057571 A JP 2006057571A JP 2004242005 A JP2004242005 A JP 2004242005A JP 2004242005 A JP2004242005 A JP 2004242005A JP 2006057571 A JP2006057571 A JP 2006057571A
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case
control board
water level
arm
pump
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JP4592354B2 (en
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Masayuki Fukushima
正之 福島
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Tsurumi Manufacturing Co Ltd
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Tsurumi Manufacturing Co Ltd
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  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water level detecting unit having compact construction for increasing heat radiating effects of a semiconductor contact which opens/closes a power supply to a pump motor, without the need for mounting a heat radiating aluminum case in the unit. <P>SOLUTION: An arm 4 is delivered from the upper end face of the case 2 storing a control board 3 and its delivered end is formed as a mounting seat 5 on the upper face of a pump. A through-hole 7 passing through the upper end face of the case 2 into a wire outlet in the upper face of the pump is formed in the arm 4. The semiconductor contact 8 is connected to the control board 3 in the case 2, the semiconductor contact 8 is joined to an electrode rod 9 connected to the control board 3 in the case 2, the lower end of the electrode rod 9 is delivered from the lower face of the case 2, and a leader 10 from the control board 3 is delivered through the through-hole 7 from around the delivery end of the arm 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、水中ポンプ用水位検出ユニットに関するものである。   The present invention relates to a water level detection unit for a submersible pump.

槽内水位の増減に伴い昇降するフロートを内装した套体の上端より取付用のアームを横出させ、前記フロートの昇降によりオン・オフ作動するリードスイッチと、ポンプモータへの電源電流を開閉するトライアックを、絶縁チューブで被覆された放熱アルミ管ケース内に収納させた状態で、前記取付用アーム内に装着してなる水中ポンプ用水位検出ユニットは公知である（例えば、特許文献１参照。）。   The mounting arm is extended from the upper end of the sleeve that has a float that moves up and down as the water level in the tank increases and decreases, and the power supply current to the pump motor and the power supply current to the pump motor are opened and closed by raising and lowering the float. A water level detection unit for a submersible pump, which is mounted in the mounting arm in a state where the triac is housed in a heat radiating aluminum tube case covered with an insulating tube, is well known (for example, see Patent Document 1). .

しかし、トライアックは開閉する電流により発熱する。そして、トライアックおよび放熱アルミ管ケースは取付用アーム内に密閉されていて、直接的にも間接的にも槽内水と接することができないので放熱効果が低い。また、取付用アーム内に大きな放熱用のアルミケースを装着するスペースを必要とするため、ユニット自体が大型化して、小型ポンプ用の水位検出ユニットには適さないものとなる。
特開昭５７−１５６５２４号公報（第１図Ａ、第５図） However, the triac generates heat due to the current that opens and closes. And since the triac and the heat radiating aluminum tube case are sealed in the mounting arm and cannot directly or indirectly contact the water in the tank, the heat radiating effect is low. In addition, since a space for mounting a large heat radiating aluminum case is required in the mounting arm, the unit itself becomes large and unsuitable for a water level detection unit for a small pump.
JP-A-57-156524 (FIGS. 1A and 5)

解決しようとする課題は、ポンプモータへの電源を開閉するトライアック等半導体接点の放熱効果が大きく、また、ユニット内に放熱用のアルミケースを装着する必要がなく、小型の水中ポンプにも装着し得るコンパクトな水位検出ユニットを提供することである。   The problem to be solved is that the heat dissipation effect of semiconductor contacts such as TRIAC that opens and closes the power supply to the pump motor is large, and it is not necessary to install an aluminum case for heat dissipation in the unit, and it is also attached to a small submersible pump. It is to provide a compact water level detection unit.

本発明に係る水中ポンプ用水位検出ユニットは、制御基板を収容したケースの上端面よりアームを導出させてその導出端をポンプ上面への取付座に形成し、ケースの上端面からポンプ上面の電線引出口へ通じる貫孔をアームに穿設し、ケース内に収容された制御基板に半導体接点を接続し、ケース内において制御基板と接続された電極棒に半導体接点を接合させ、電極棒の下端部をケースの下面より導出し、制御基板からの引出線をアームの貫孔を通じてその導出端付近より導出させたことを最も主要な特徴とする。   The water level detection unit for a submersible pump according to the present invention is such that an arm is led out from the upper end surface of the case containing the control board, and the lead end is formed on a mounting seat on the upper surface of the pump. A through-hole leading to the outlet is drilled in the arm, the semiconductor contact is connected to the control board accommodated in the case, the semiconductor contact is joined to the electrode bar connected to the control board in the case, and the lower end of the electrode bar The main feature is that the portion is led out from the lower surface of the case, and the lead line from the control board is led out from the vicinity of the lead-out end through the through hole of the arm.

本発明によれば、ケース内においてトライアック等半導体接点の接続された制御基板に電極棒が接続され、該電極棒の下端部をケースの下面より導下させて槽内水による水冷作用が行われるため、トライアック等半導体接点の放熱効果が高く、また、ユニット内に放熱用のアルミケースを装着する必要がないのでコンパクト且つ組立性を良好に構成することができ、小型ポンプ用の水位検出ユニットとしても適用し得るという利点がある。   According to the present invention, the electrode rod is connected to the control board to which the semiconductor contacts such as triac are connected in the case, and the lower end portion of the electrode rod is guided from the lower surface of the case to perform the water cooling action by the water in the tank. Therefore, the heat dissipation effect of semiconductor contacts such as triac is high, and it is not necessary to install an aluminum case for heat dissipation in the unit, so it can be compact and has good assembly, and as a water level detection unit for small pumps There is an advantage that can also be applied.

制御基板を収容したケースの上端面よりアームを導出させてその導出端をポンプ上面への取付座に形成し、ケースの上端面からポンプ上面の電線引出口へ通じる貫孔をアームに穿設し、ケース内に収容された制御基板に半導体接点を接続し、ケース内において制御基板と接続された電極棒に半導体接点を面接触状態により接合させ、電極棒の下端部をケースの下面より導出し、制御基板からの引出線をアームの貫孔を通じてその導出端付近より導出させる。   The arm is led out from the upper end surface of the case containing the control board, the leading end is formed on the mounting seat on the top surface of the pump, and a through hole is formed in the arm from the upper end surface of the case to the wire outlet on the top surface of the pump. The semiconductor contact is connected to the control board housed in the case, the semiconductor contact is joined to the electrode rod connected to the control board in the case by surface contact, and the lower end of the electrode rod is led out from the lower surface of the case The lead line from the control board is led out from the vicinity of the lead-out end through the through hole of the arm.

実施例の図面において、１ａは水中ポンプ外胴、１ｂは水中ポンプ上面、２は制御基板３を収容したケース、４はケース２の上端面から導出されたアームであり、その導出端をポンプ上面１ｂへの取付座５に形成し、ケース２の上端面からポンプ上面１ｂの電線引出口６へ通じる貫孔７が穿設されている。ケース２内に収容された制御基板３には例えばトライアックのような半導体接点８を接続し、ケース２内において制御基板３と接続された電極棒９に半導体接点８を接合させ、電極棒９の下端部をケース２の下面より所要長さに導出し、制御基板３からの引出線１０をアーム４の貫孔７を通じてその導出端付近より導出させ、ケース２内の空隙部１１を絶縁性充填剤で密封する。なお、１２は取付座５の中心部に穿設された電源ケーブル挿通用竪孔、１３・・１３は取付座５の周辺部に穿設された取付ボルト挿通孔である。   In the drawings of the embodiment, 1a is a submersible pump outer cylinder, 1b is a submersible pump upper surface, 2 is a case housing a control board 3, and 4 is an arm led out from the upper end surface of the case 2, and the lead-out end is the pump upper surface. A through-hole 7 is formed in the mounting seat 5 for 1b and communicates from the upper end surface of the case 2 to the electric wire outlet 6 of the pump upper surface 1b. A semiconductor contact 8 such as a triac is connected to the control board 3 accommodated in the case 2, and the semiconductor contact 8 is joined to the electrode rod 9 connected to the control board 3 in the case 2. The lower end is led out to the required length from the lower surface of the case 2, the lead wire 10 from the control board 3 is led out from the vicinity of the lead-out end through the through hole 7 of the arm 4, and the gap 11 in the case 2 is insulatively filled. Seal with agent. Reference numeral 12 denotes a power cable insertion hole drilled in the central portion of the mounting seat 5, and 13... 13 are mounting bolt insertion holes drilled in the peripheral portion of the mounting seat 5.

非自動式の水中ポンプを自動式に変換させるについては、水中ポンプ上面１ｂの電線引出口６から導出されていた既設の電源ケーブル（図示せず）を取り除き、例えば、電源ケーブル挿通用竪孔１２に取外した電源ケーブル１４を挿通し、該電源ケーブル１４の分割心芯線１５・・１５と、モータ側の引出線１６・・１６と、制御基板３からの引出線１０・・１０をそれぞれ所定通りに接続した状態により、取付アーム４の取付座５を水中ポンプ上面１ｂに当接させ、取付ボルト挿通孔１３・・１３より取付ボルト１７・・１７を挿通させて締着することにより、水位検出用ユニットの装着された自動式の水中ポンプが構成されることになる。水位検出用ユニットにおける電極棒９の導下本数について限定はない。図６に示すよう２本の電極棒の一方をベース電極９ｂとして他方を検知電極９ｓとする標準的な態様のほか、図７に示すよう電極棒は１本としてこの１本を検知電極９ｓとしポンプ本体をベース電極９ｂとしてもよく、また、図８に示すよう長さの異なる複数本の電極棒をそれぞれ検知電極９ｓ・・９ｓとして多点水位の検出を行わせることも可能である。   In order to convert the non-automatic submersible pump to the automatic type, an existing power cable (not shown) led out from the electric wire outlet 6 on the upper surface 1b of the submersible pump is removed, and, for example, a power cable insertion hole 12 is provided. The power cable 14 that has been removed is inserted, and the split core wires 15, 15 of the power cable 14, the lead wires 16, 16 on the motor side, and the lead wires 10, 10 from the control board 3 are respectively set in predetermined ways. , The mounting seat 5 of the mounting arm 4 is brought into contact with the upper surface 1b of the submersible pump and the mounting bolts 17 and 17 are inserted through the mounting bolt insertion holes 13 and 13 and tightened to detect the water level. An automatic submersible pump fitted with a unit for use will be constructed. There is no limitation on the number of electrode rods 9 introduced in the water level detection unit. In addition to the standard mode in which one of the two electrode rods is a base electrode 9b and the other is a detection electrode 9s as shown in FIG. 6, one electrode rod is used as one detection electrode 9s as shown in FIG. The pump body may be used as the base electrode 9b, and it is also possible to detect a multipoint water level by using a plurality of electrode rods having different lengths as the detection electrodes 9s..

ケース２内において制御基板３と接続された電極棒９に半導体接点８を面接触状態により接合させる。電極棒９の形状は、丸棒状、角棒状、平板状、パイプ状、或いはコイルスプリング状その他任意の形状とすることができる。しかし、導電性および熱伝導性を良好にするため、半導体接点８との接合は面接触状態とし、更にリベットやビス止め等により接合面を締着させることが望ましい。従って、電極棒９が丸棒状の場合にはその外周面の所要箇所に、いわゆるＤカットを施して半導体接点８と面接触状態に接合させることになる。   In the case 2, the semiconductor contact 8 is joined to the electrode rod 9 connected to the control substrate 3 in a surface contact state. The shape of the electrode rod 9 may be a round bar shape, a square bar shape, a flat plate shape, a pipe shape, a coil spring shape, or any other shape. However, in order to improve the electrical conductivity and thermal conductivity, it is desirable to join the semiconductor contact 8 in a surface contact state and to fasten the joint surface by rivets, screws or the like. Therefore, when the electrode rod 9 is in the shape of a round bar, a so-called D cut is applied to a required portion of the outer peripheral surface to join the semiconductor contact 8 in a surface contact state.

本発明水位検出ユニットを装着してなる自動式水中ポンプの要部縦断側面図である。It is a principal part vertical side view of the automatic submersible pump equipped with this invention water level detection unit. 本発明水位検出ユニットの外観側面図である。It is an external appearance side view of this invention water level detection unit. 本発明水位検出ユニットの縦断側面図である。It is a vertical side view of this invention water level detection unit. 図２のＡ−Ａ線における縦断正面図である。It is a vertical front view in the AA line of FIG. 図２のＢ−Ｂ線における縦断底面図である。It is a vertical bottom view in the BB line of FIG. 本発明水位検出ユニットにおける電極棒の導下態様を例示した説明図であって、２本の電極棒の一方をベース電極とし他方を検知電極とした事例を示す。It is explanatory drawing which illustrated the conduction | electrical_connection state of the electrode rod in this invention water level detection unit, Comprising: The example which used one of the two electrode rods as a base electrode, and used the other as a detection electrode is shown. 本発明水位検出ユニットにおける電極棒の導下態様を例示した説明図であって、ポンプ本体をベース電極とし１本の電極棒を検知電極とした事例を示す。It is explanatory drawing which illustrated the conduction | electrical_connection state of the electrode rod in this invention water level detection unit, Comprising: The example which used the pump main body as a base electrode and used one electrode rod as a detection electrode is shown. 本発明水位検出ユニットにおける電極棒の導下態様を例示した説明図であって、長さの異なる複数本の電極棒により多点水位の検出を行わせようとする事例を示す。It is explanatory drawing which illustrated the conduction | electrical_connection state of the electrode rod in this invention water level detection unit, Comprising: The example which is going to perform the detection of a multipoint water level with the several electrode rod from which length differs is shown.

符号の説明Explanation of symbols

１ａ 水中ポンプ外胴
１ｂ 水中ポンプ上面
２ ケース
３ 制御基板
４ アーム
５ 取付座
６ 電線引出口
７ 貫孔
８ 半導体接点
９ 電極棒
１０ 制御基板からの引出線
１１ 空隙部 DESCRIPTION OF SYMBOLS 1a Submersible pump outer cylinder 1b Submersible pump upper surface 2 Case 3 Control board 4 Arm 5 Mounting seat 6 Electric wire outlet 7 Through hole 8 Semiconductor contact 9 Electrode rod 10 Lead wire from control board 11 Gap part

Claims (2)

制御基板を収容したケースの上端面よりアームを導出させてその導出端をポンプ上面への取付座に形成し、ケースの上端面からポンプ上面の電線引出口へ通じる貫孔をアームに穿設し、ケース内に収容された制御基板に半導体接点を接続し、ケース内において制御基板と接続された電極棒に半導体接点を接合させ、電極棒の下端部をケースの下面より導出し、制御基板からの引出線をアームの貫孔を通じてその導出端付近より導出させたことを特徴とする、水中ポンプ用水位検出ユニット。   The arm is led out from the upper end surface of the case containing the control board, the leading end is formed on the mounting seat on the top surface of the pump, and a through hole is formed in the arm from the upper end surface of the case to the wire outlet on the top surface of the pump. The semiconductor contact is connected to the control board housed in the case, the semiconductor contact is joined to the electrode rod connected to the control board in the case, the lower end portion of the electrode rod is led out from the lower surface of the case, and from the control board A water level detection unit for a submersible pump, characterized in that a lead wire is led out from the vicinity of its lead-out end through a through hole of an arm. ケース内において制御基板と接続された電極棒に半導体接点が面接触状態により接合されていることを特徴とする、請求項１記載の水中ポンプ用水位検出ユニット。   2. The water level detection unit for a submersible pump according to claim 1, wherein a semiconductor contact is joined to the electrode rod connected to the control board in the case by surface contact.
JP2004242005A 2004-08-23 2004-08-23 Water level detection unit for submersible pumps Active JP4592354B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012031543A1 (en) * 2010-09-07 2012-03-15 宁波巨神制泵实业有限公司 Dry-type cable wire outlet device for a submersible electrical pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH078589U (en) * 1993-06-30 1995-02-07 株式会社鶴見製作所 Detachable water level detector for submersible pumps
JP2001041188A (en) * 1999-07-28 2001-02-13 Tsurumi Mfg Co Ltd Removable liquid level detector for automatic operation of submerged motor-driven pump
JP2001059492A (en) * 1999-08-23 2001-03-06 Tsurumi Mfg Co Ltd Detachable liquid level detector for automatically operating submersible motor-driven pump
JP2001059495A (en) * 1999-08-23 2001-03-06 Tsurumi Mfg Co Ltd Detachable liquid level detector for automatically operating submersible motor-driven pump
JP2003074490A (en) * 2001-08-31 2003-03-12 Tsurumi Mfg Co Ltd Inverter unit for submerged pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH078589U (en) * 1993-06-30 1995-02-07 株式会社鶴見製作所 Detachable water level detector for submersible pumps
JP2001041188A (en) * 1999-07-28 2001-02-13 Tsurumi Mfg Co Ltd Removable liquid level detector for automatic operation of submerged motor-driven pump
JP2001059492A (en) * 1999-08-23 2001-03-06 Tsurumi Mfg Co Ltd Detachable liquid level detector for automatically operating submersible motor-driven pump
JP2001059495A (en) * 1999-08-23 2001-03-06 Tsurumi Mfg Co Ltd Detachable liquid level detector for automatically operating submersible motor-driven pump
JP2003074490A (en) * 2001-08-31 2003-03-12 Tsurumi Mfg Co Ltd Inverter unit for submerged pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012031543A1 (en) * 2010-09-07 2012-03-15 宁波巨神制泵实业有限公司 Dry-type cable wire outlet device for a submersible electrical pump

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