CN105043507A - Cable trench water ingress alarm device - Google Patents

Cable trench water ingress alarm device Download PDF

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Publication number
CN105043507A
CN105043507A CN201510292107.2A CN201510292107A CN105043507A CN 105043507 A CN105043507 A CN 105043507A CN 201510292107 A CN201510292107 A CN 201510292107A CN 105043507 A CN105043507 A CN 105043507A
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China
Prior art keywords
water inlet
alarm
cable duct
slide block
warning device
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Granted
Application number
CN201510292107.2A
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Chinese (zh)
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CN105043507B (en
Inventor
吕超
王珂
侯炜
赵孝云
赵书华
王文龙
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State Grid Corp of China SGCC
Jinan Power Supply Co of State Grid Shandong Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Jinan Power Supply Co of State Grid Shandong Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, Jinan Power Supply Co of State Grid Shandong Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201510292107.2A priority Critical patent/CN105043507B/en
Publication of CN105043507A publication Critical patent/CN105043507A/en
Application granted granted Critical
Publication of CN105043507B publication Critical patent/CN105043507B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a cable trench water ingress alarm device which comprises an alarm and a water ingress monitoring triggering device. The alarm is connected with a control circuit. The water ingress monitoring triggering device is connected with the bottom surface of a cable trench. The control switch is arranged at the upper part of the water ingress monitoring triggering device. The water ingress monitoring triggering device comprises a housing. The housing comprises a supporting plate, a box wall, a guide baffle plate, an upper chamber and a lower chamber. The supporting plate is provided with water inlet holes. Waterproof sealed connection is used as a connecting position between the guide baffle plate and the inner chamber of the housing. The lower chamber is internally provided with a ball float. The guide baffle plate is provided with a guide sleeve. Watertight sealed connection is adopted between the guide sleeve and the guide baffle plate. The inner hole of the guide sleeve is internally provided with a slide block. A movable contact is connected with the upper end of the slide block. The cable trench water ingress alarm device has advantages of stable structure and reliable fixation. When water ingress occurs in the cable trench, an alarm can be effectively transmitted to personnel within control in time, thereby taking a preventing measure in time and preventing safety accidents.

Description

Cable duct water inlet warning device
Technical field
The present invention relates to security alarm device technical field, particularly relate to a kind of cable duct water inlet warning device.
Background technology
Switchgear building is the most basic change distribution facility, the inlet wire of switchgear buildings a large amount of in prior art is all through cable duct and arranges, because switchgear building inlet wire cable duct is communicated with outdoor, there is the position that shutoff is not tight, the not tight position of these shutoff easily intakes, and because cable duct is easily intake when particularly summer, rainwater was large, in the routine inspection method that cuts in and out, supervisory personnel finds that cable is immersed in water, even sometimes, water spilling cable duct could find there is very large potential safety hazard.By being provided with water alarm equipment alarm in ditch, patrol officer can follow and find that situation also processes rapidly, defect elimination according to alarm.
Cable duct water inlet on-Line Monitor Device of the prior art, such as application number is the application for a patent for invention of 2010205151522, adopt housing exactly, float ball, lever, a kind of monitoring equipment of alarm unitized construction, this structure Problems existing is that float position in housing easily changes, insensitive to the reacting condition of water level, not rapid, monitoring reliability is poor, and lever construction is easily stuck in pin joint position, rotate dumb, or after use after a while, easily occur that hole axle coordinates wearing and tearing, gap becomes large, the effective travel of lever is made to become large, make the less reliable controlled equally, the position of the travel switch adopted in the present invention is in addition in lower position in cable duct, when cable duct is intake, travel switch can not effectively be protected, inherently easily be immersed in water, make this checkout equipment can not play detection and warning function, thus cause potential safety hazard.
Summary of the invention
Object of the present invention is exactly the problems referred to above existed for solving prior art, provides a kind of cable duct water inlet warning device; Stabilized structure of the present invention, fixing reliable, when cable duct is intake, can alerting signal be sent to timely and effectively the personnel in controlling, to adopt the precautionary measures in time, avoid the generation causing security incident.
The technical scheme of technical solution problem of the present invention is:
A kind of cable duct water inlet warning device, comprise alarm, water inlet monitoring flip flop equipment, control circuit, described alarm is connected with control circuit, water inlet monitoring flip flop equipment is connected with the supporting surface bottom cable duct, the gauge tap of described control circuit is located at the top into water monitoring flip flop equipment, the mobile contact that flip flop equipment is monitored in normally opened contact and the water inlet of gauge tap coordinates, by disconnection and the conducting of water inlet monitoring flip flop equipment control circuit, alarm is located in pulpit, described water inlet monitoring flip flop equipment comprises casing, described casing comprises bottom support plate, tank wall, described back up pad and tank wall are connected to form cabinets cavity, be provided with inlet opening on the supporting plate, kicker baffle is provided with in the middle of cabinets cavity, guide plate is every cabinets cavity is divided into upper cavity, lower chamber, described kicker baffle and cabinets cavity adopt being tightly connected of waterproof at link position place, float ball is provided with in the lower chamber of kicker baffle bottom, the orienting sleeve of vertical direction is provided with in the centre of kicker baffle, described orienting sleeve cylindrical and kicker baffle endoporus link position adopt fluid-tight being tightly connected, the slide block matched is provided with in the endoporus of orienting sleeve, mobile contact is connected with the upper end of slide block.
The tank wall of the lower chamber of described guide plate bottom is provided with some sides water inlet, the upper cavity on guide plate top is airtight cylindrical shell, the top cover labyrinth matched is provided with in the upper end of cylindrical shell, gauge tap is connected with the inner side of top cover labyrinth, described cylindrical shell upper surface is provided with cylindrical shell metallic channel, the bottom of described top cover labyrinth is provided with positioning boss, the cylindrical of positioning boss coordinates with the inner headed face of cylindrical shell, described positioning boss is provided with gland bonnet metallic channel, gland bonnet metallic channel is corresponding with cylindrical shell metallic channel position, described gland bonnet metallic channel, cylindrical shell metallic channel position is provided with seal, keep the waterproof sealing of metallic channel position, the wire be connected with gauge tap passes from gland bonnet metallic channel and cylindrical shell metallic channel.
The bottom of described mobile contact is provided with external thread, and upper end of slide block is provided with upper level end face, is provided with internal thread hole at horizontal end face, and described slide block is connected by the threaded engagement between external thread, internal thread hole with mobile contact.
The lower end of described slide block is provided with horizontal ledge, the external diameter of described boss is greater than the external diameter of orienting sleeve, the lower surface of described boss is provided with ball recess, described ball recess position coordinates with the top spherical outside surface of float ball, the inside surface of described casing is inner cylinder face, and described inner cylinder face diameter coordinates with the diameter dimension of float ball.
Adopt bar section of stainless steel to be formed bottom described back up pad and tank wall to removably connect; Ground is provided with built-in fitting ground web joint, is provided with supporting leg bottom tank wall, and supporting leg forms demountable structure by bolt and ground web joint and is connected, and described top cover labyrinth is provided with the hand handle conveniently picking and placeing top cover labyrinth.
The periphery of described slide block and the endoporus of orienting sleeve adopt the shiny surface that roughness is little to coordinate, and the periphery of slide block and the endoporus of orienting sleeve are the clearance fit that friction force is little, gap is little.
Described control circuit comprises gauge tap, alarm, described gauge tap, alarm is connected with power supply by circuit, described circuit is provided with hand switch, hand switch is located in pulpit, the v direct supply one of described power acquisition ac power supply, circuit in pulpit is provided with the accumulator in parallel with direct supply one and battery switch, when AC power has a power failure, during power-off, battery switch closes to alarm line powering, described gauge tap adopts travel switch, the normally opened contact of travel switch is connected in alarm circuit, connect in alarm circuit divider resistance R.
Described alarm, battery switch, hand switch are located on switch board, and alarm adopts acousto-optic integrated formula alarm.
Float ball is stainless steel float ball, the bottom of described float ball is cylindrical structure, the top of cylindrical structure and hemispherical dome structure, or cylindrical structure, or conical structure is connected to form hollow structure, described hollow structure top is provided with positioning and guiding projection, the inner hole of described positioning and guiding projection and slide block.
Ground bottom cable duct is provided with pit, and described bottom half is connected with pit bottom.
Beneficial effect of the present invention:
1. stabilized structure of the present invention, fixing reliable, and easy accessibility, safety in utilization, accuracy, reliability are high, when cable duct is intake, can alerting signal be sent to timely and effectively the personnel in controlling, to manipulate personnel can adopt the precautionary measures in time, avoid the generation causing security incident.
2. by being provided with kicker baffle in the middle of cabinets cavity, state kicker baffle and cabinets cavity adopts being tightly connected of waterproof at link position place, the orienting sleeve of vertical direction is provided with in the centre of kicker baffle, orienting sleeve cylindrical and kicker baffle endoporus link position adopt fluid-tight being tightly connected, the slide block matched is provided with in the endoporus of orienting sleeve, the periphery of slide block and the endoporus of orienting sleeve adopt the shiny surface that roughness is little to coordinate, and the periphery of slide block and the endoporus of orienting sleeve are the clearance fit that friction force is little, gap is little.Mobile contact is connected with the upper end of slide block, the mobile contact that ensuring and controlling switch coordinates can accurately and reliably move, due to good seal in casing, do not have foreign matter to enter and the entering of water, avoid the false alarm that action that foreign matter enters the gauge tap caused causes, it also avoid the generation of the Problem of Failure such as the short circuit of the gauge tap caused after water enters, ensure the normal use of warning device.
3. the tank wall of the lower chamber of guide plate bottom is provided with some sides water inlet, by offering of side water inlet, when there being water to enter cable duct, water can enter casing as early as possible and realize reporting to the police, making operating personnel that the sufficient time can be had to take the precautionary measures, striving for the more time for removing a hidden danger, the upper cavity on guide plate top is airtight cylindrical shell, the top cover labyrinth matched is provided with in the upper end of cylindrical shell, gauge tap is connected with the inner side of top cover labyrinth, described cylindrical shell upper surface is provided with cylindrical shell metallic channel, the bottom of described top cover labyrinth is provided with positioning boss, the cylindrical of positioning boss coordinates with the inner headed face of cylindrical shell, described positioning boss is provided with gland bonnet metallic channel, gland bonnet metallic channel is corresponding with cylindrical shell metallic channel position, gland bonnet metallic channel and cylindrical shell metallic channel position are provided with the waterproof sealing that seal keeps metallic channel position, prevent the water in cable duct from from metallic channel, entering into upper cavity, the short circuit of the gauge tap caused and inefficacy, ensure reliability and the accuracy of warning, pass from gland bonnet metallic channel and cylindrical shell metallic channel at the wire be connected with gauge tap.
4. the bottom of mobile contact is provided with external thread, the horizontal end face of upper end of slide block is provided with internal thread hole, slide block is connected by the threaded engagement between external thread, internal thread hole with mobile contact, connected by dismountable threaded engagement, the relative position up and down of mobile contact can be adjusted easily, the cooperation requirement of mobile contact and the different distance of different gauge tap can be adapted to, make to keep rational adjustable idle motion gap therebetween, avoid the plastic yield of the being damaged property of contact of gauge tap and lost efficacy, scrap.
5. the lower end of slide block is provided with horizontal ledge, the lower surface of boss is provided with ball recess, ball recess position coordinates with the top spherical outside surface of float ball, and the inside surface of casing coordinates by inner cylinder face forms predetermined clearance fit with the diameter dimension of float ball, make the shape of casing as far as possible little, reduce quality and the manufacturing cost of casing, reduce moving left and right and rocking of float ball again, accurately movement up and down in the vertical direction as far as possible making float ball be merely able to limit at ball recess, the accuracy moved up and down by float ball ensures the reliability of gauge tap action, realize and alarm.
6. casing of the present invention, back up pad, float ball adopt stainless steel material to make, and adopt bar section of stainless steel to be formed bottom back up pad and tank wall to removably connect, structure long service life, facility long term reliability can be kept, decrease working service cost, casing forms demountable structure by the supporting leg bottom ground built-in fitting ground web joint, tank wall and stainless steel bolt and connects, easy installation and removal, fixed installation reliability is high, avoids casing to tilt and the potential safety hazard caused of can not reliably reporting to the police in time caused that skews.
7. control circuit of the present invention comprises the direct supply one adopting ac power supply, circuit in pulpit is provided with the accumulator in parallel with direct supply one and battery switch, when AC power power failure, power-off, battery switch closes to alarm line powering, alarm adopts acousto-optic integrated formula alarm, keep detection alarm device of the present invention can keep duty in real time, functional reliability is high, and avoiding can not the potential safety hazard that causes of alert always.
8. float ball is stainless steel float ball, the bottom of described float ball is cylindrical structure, the hemispherical dome structure on the top of cylindrical structure, or cylindrical structure, or conical structures etc. are connected to form hollow structure, hollow structure top is provided with positioning and guiding projection, positioning and guiding is protruding plays axial location and guide effect with the inner hole of slide block, avoid the skew of cylindrical structure stainless steel float ball, ensure vertically to move, realize the action message of stainless steel float ball, ensure that the reliable of warning device plays alarm function in time.Simultaneously by arranging the unitized construction of the hemispherical dome structure of cylindrical structure and top, when intaking in cable duct, ensure as far as possible large buoyancy, float is reliably moved up, reliable in action, simultaneously by positioning and guiding protruding coordinating with slide block, float ball is merely able to upwards vertically move, more can safety action reliability, thus ensures reliability and the promptness of warning device.
9. the ground bottom cable duct is provided with pit, and described bottom half is connected with pit bottom.Ensure, once have ponding in cable duct even little ponding, can both flow in pit, warning device is reliably reported to the police in time, avoid because the hidden danger that causes too much of ponding and accident.
Accompanying drawing explanation
Fig. 1 is the structural representation of invention;
Fig. 2 is casing and inner structure schematic diagram;
The box inner structure schematic diagram of Fig. 3 to be the bottom of float ball be cylindrical structure;
Fig. 4 is operation circuit figure.
Embodiment
In order to understand the present invention better, explain embodiments of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figures 1 to 4, a kind of cable duct water inlet warning device, comprise chimes of doom light crossing-signal 44, water inlet monitoring flip flop equipment, described audible-visual annunciator 44 is connected with control circuit, the gauge tap 4 of described control circuit is located at the top into water monitoring flip flop equipment, the front end 15 that the mobile contact 5 of flip flop equipment is monitored in normally opened contact 43 and the water inlet of gauge tap 4 coordinates, by disconnection and the conducting of water inlet monitoring flip flop equipment control circuit, described water inlet monitoring flip flop equipment is connected with the supporting surface 10 bottom cable duct, audible-visual annunciator 44 is located in pulpit, described water inlet monitoring flip flop equipment comprises casing 1, described casing 1 comprises bottom support plate 11, tank wall 26, described back up pad 11 is connected to form cabinets cavity with tank wall, back up pad 11 is provided with inlet opening 12, kicker baffle 21 is provided with in the middle of cabinets cavity, cabinets cavity is divided into upper cavity 27 every 21 by guide plate, lower chamber 28, described kicker baffle 21 adopts being tightly connected of waterproof with cabinets cavity at link position 25 place, the stainless steel float ball 2 of hollow is provided with in the lower chamber 28 of kicker baffle 21 bottom, the orienting sleeve 23 of vertical direction is provided with in the centre of kicker baffle 21, described orienting sleeve 23 cylindrical and kicker baffle endoporus link position 22 adopt being tightly connected of waterproof, the slide block 3 matched is provided with in the endoporus of orienting sleeve 23, mobile contact 5 is connected with the upper end of slide block 3, the bottom of wherein said mobile contact 5 is provided with external thread, slide block 3 upper end is provided with upper level end face, internal thread hole is provided with at horizontal end face, described slide block 3 passes through external thread with mobile contact 5, threaded engagement 14 between internal thread hole connects, horizontal ledge 6 is provided with in the lower end of slide block 3, the external diameter of described boss 6 is greater than the external diameter of orienting sleeve, the horizontal upper end face of boss 6 coordinates with the lower surface of kicker baffle 21, axial limiting effect is played in the lower surface of kicker baffle 21, avoid deviating from from top.The lower surface of described boss 6 is provided with ball recess 7, and described ball recess 7 position coordinates with the top spherical outside surface of float ball 2.Interior is inner cylinder face, and described inner cylinder face diameter coordinates with the diameter dimension of float ball, adopts bar section of stainless steel 30 to be formed and removably connect bottom described back up pad 11 and tank wall.
By being provided with kicker baffle in the middle of cabinets cavity, state kicker baffle and cabinets cavity adopts being tightly connected of waterproof at link position place, the orienting sleeve of vertical direction is provided with in the centre of kicker baffle, orienting sleeve cylindrical and kicker baffle endoporus link position adopt fluid-tight being tightly connected, the slide block matched is provided with in the endoporus of orienting sleeve, the periphery of slide block and the endoporus of orienting sleeve adopt the shiny surface that roughness is little to coordinate, and the periphery of slide block and the endoporus of orienting sleeve are the clearance fit that friction force is little, gap is little.Mobile contact is connected with the upper end of slide block, the mobile contact that ensuring and controlling switch coordinates can accurately and reliably move, due to good seal in casing, do not have foreign matter to enter and the entering of water, avoid the false alarm that action that foreign matter enters the gauge tap caused causes, it also avoid the generation of the Problem of Failure such as the short circuit of the gauge tap caused after water enters, ensure the normal use of warning device.
The bottom of described stainless steel float ball 2 is cylindrical structure or spherical mechanism, the top of described cylindrical structure and hemispherical dome structure or cylindrical structure or conical structure are connected, form hollow structure, hollow structure top is provided with positioning and guiding projection 33, described positioning and guiding is protruding plays axial location and guide effect with the inner hole of slide block 3, avoid the skew of cylindrical structure stainless steel float ball 2, ensure vertically to move, realize the action message of stainless steel float ball 2, ensure that the reliable of warning device plays alarm function in time.Simultaneously by arranging the unitized construction of the hemispherical dome structure of cylindrical structure and top, when intaking in cable duct, ensure as far as possible large buoyancy, make that float ball reliably moves up, reliable in action, simultaneously by positioning and guiding protruding coordinating with slide block, float ball is merely able to upwards vertically move, more can safety action reliability, thus ensures reliability and the promptness of warning device.
Ground bottom cable duct is provided with pit 32, is connected bottom described casing 1 with bottom pit 32.Ensure, once have ponding in cable duct even little ponding, can both flow in pit, warning device is reliably reported to the police in time, avoid because the hidden danger that causes too much of ponding and accident.
Ground is provided with built-in fitting ground and connects 9 plates, is provided with supporting leg 13 bottom tank wall, and supporting leg 13 forms demountable structure by bolt with ground web joint 9 and is connected.
The periphery of described slide block 3 and the endoporus of orienting sleeve 23 adopt the shiny surface that roughness is little to coordinate, and the periphery of slide block 3 and the endoporus of orienting sleeve 23 are the clearance fit 29 that friction force is little, gap is little.
The tank wall of the lower chamber 28 of described guide plate 21 bottom is provided with some sides water inlet 8, the upper cavity 27 on guide plate 21 top is airtight cylindrical shell, the top cover labyrinth 17 matched is provided with in the upper end of cylindrical shell, gauge tap is connected with the inner side of top cover labyrinth 17, described cylindrical shell upper surface is provided with cylindrical shell metallic channel 19, the bottom of described top cover labyrinth 17 is provided with positioning boss 18, the cylindrical of positioning boss 18 coordinates with the inner headed face of cylindrical shell, described positioning boss is provided with gland bonnet metallic channel 24, gland bonnet metallic channel 24 is corresponding with cylindrical shell metallic channel 19 position, the wire 31 be connected with gauge tap passes from gland bonnet metallic channel 24 and cylindrical shell metallic channel 19.Top cover labyrinth 17 be provided with conveniently pick and place top cover labyrinth 17 hand 20.Described gland bonnet metallic channel, cylindrical shell metallic channel position are provided with seal, keep the waterproof sealing of metallic channel position.
Described control circuit comprises gauge tap, audible-visual annunciator 44, described gauge tap, audible-visual annunciator is connected with power supply by circuit, described circuit is provided with hand switch 46, hand switch is located in pulpit, the 24v direct supply 1 of described power acquisition ac power supply, circuit in pulpit is provided with the accumulator 42 in parallel with direct supply 1 and battery switch 47, when AC power has a power failure, during power-off, battery switch 47 closes to audible-visual annunciator line powering, described gauge tap adopts travel switch, the normally opened contact 43 of travel switch is being connected in sound and light alarm circuit, connect in sound and light alarm circuit divider resistance R45.Float ball 2 adopts stainless steel float ball.
Described audible-visual annunciator 44, battery switch 47, hand switch 46 are located on switch board 40.
Described casing adopts stainless steel material to make.Water inlet monitoring flip flop equipment is placed in cable duct, when after cable duct water inlet, stainless steel float ball 2 in stainless steel casing floats, the normally opened contact 43 of travel switch is made to close conducting by water inlet monitoring flip flop equipment, closing of circuit, audible-visual annunciator 44 sends sound and the light of warning, reminds manipulation personnel to adopt strick precaution and emergency measures in time, avoids causing security incident; After reaching warning message, manually can disconnect sound and light alarm circuit by switch, audible-visual annunciator 2 cuts out.The present invention effectively raises work efficiency, and flexible adaptation is in switchgear building cable duct, and Timeliness coverage potential safety hazard, reduces personnel and equipment economic loss.
By reference to the accompanying drawings the embodiment of invention is described although above-mentioned; but not limiting the scope of the invention; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.

Claims (10)

1. a cable duct water inlet warning device, comprise alarm, water inlet monitoring flip flop equipment, control circuit, described alarm is connected with control circuit, water inlet monitoring flip flop equipment is connected with the supporting surface bottom cable duct, it is characterized in that, the gauge tap of described control circuit is located at the top into water monitoring flip flop equipment, the mobile contact that flip flop equipment is monitored in normally opened contact and the water inlet of gauge tap coordinates, by disconnection and the conducting of water inlet monitoring flip flop equipment control circuit, alarm is located in pulpit, described water inlet monitoring flip flop equipment comprises casing, described casing comprises bottom support plate, tank wall, described back up pad and tank wall are connected to form cabinets cavity, be provided with inlet opening on the supporting plate, kicker baffle is provided with in the middle of cabinets cavity, guide plate is every cabinets cavity is divided into upper cavity, lower chamber, described kicker baffle and cabinets cavity adopt being tightly connected of waterproof at link position, the float ball of hollow is provided with in the lower chamber of kicker baffle bottom, the orienting sleeve of vertical direction is provided with in the centre of kicker baffle, what described orienting sleeve cylindrical and kicker baffle endoporus link position adopted is tightly connected, the slide block matched is provided with in the endoporus of orienting sleeve, mobile contact is connected with the upper end of slide block.
2. cable duct water inlet warning device as claimed in claim 1, it is characterized in that, the tank wall of the lower chamber of described guide plate bottom is provided with some sides water inlet, the upper cavity on guide plate top is airtight cylindrical shell, the top cover labyrinth matched is provided with in the upper end of cylindrical shell, gauge tap is connected with the inner side of top cover labyrinth, described cylindrical shell upper surface is provided with cylindrical shell metallic channel, the bottom of described top cover labyrinth is provided with positioning boss, the cylindrical of positioning boss coordinates with the inner headed face of cylindrical shell, described positioning boss is provided with gland bonnet metallic channel, gland bonnet metallic channel is corresponding with cylindrical shell metallic channel position, described gland bonnet metallic channel, cylindrical shell metallic channel position is provided with seal, keep the waterproof sealing of metallic channel position, the wire be connected with gauge tap passes from gland bonnet metallic channel and cylindrical shell metallic channel.
3. cable duct water inlet warning device as claimed in claim 1, it is characterized in that, the bottom of described mobile contact is provided with external thread, upper end of slide block is provided with upper level end face, be provided with internal thread hole at horizontal end face, described slide block is connected by the threaded engagement between external thread, internal thread hole with mobile contact.
4. cable duct water inlet warning device as claimed in claim 1, it is characterized in that, the lower end of described slide block is provided with horizontal ledge, the external diameter of described boss is greater than the external diameter of orienting sleeve, the lower surface of described boss is provided with ball recess, described ball recess position coordinates with the top spherical outside surface of float ball, and the inside surface of described casing is inner cylinder face, and described inner cylinder face diameter coordinates with the diameter dimension of float ball.
5. cable duct water inlet warning device as claimed in claim 1, is characterized in that, adopts bar section of stainless steel to be formed and removably connect bottom described back up pad and tank wall; Ground is provided with built-in fitting ground web joint, is provided with supporting leg bottom tank wall, and supporting leg forms demountable structure by bolt and ground web joint and is connected, and described top cover labyrinth is provided with the hand handle conveniently picking and placeing top cover labyrinth.
6. cable duct water inlet warning device as claimed in claim 1, is characterized in that, the periphery of described slide block and the endoporus of orienting sleeve adopt the shiny surface that roughness is little to coordinate, and the periphery of slide block and the endoporus of orienting sleeve are the clearance fit that friction force is little, gap is little.
7. cable duct water inlet warning device as claimed in claim 1, it is characterized in that, described control circuit comprises gauge tap, alarm, described gauge tap, alarm is connected with power supply by circuit, described circuit is provided with hand switch, hand switch is located in pulpit, the v direct supply one of described power acquisition ac power supply, circuit in pulpit is provided with the accumulator in parallel with direct supply one and battery switch, when AC power has a power failure, during power-off, battery switch closes to alarm line powering, described gauge tap adopts travel switch, the normally opened contact of travel switch is connected in alarm circuit, connect in alarm circuit divider resistance R.
8. cable duct water inlet warning device as claimed in claim 1, it is characterized in that, described alarm, battery switch, hand switch are located on switch board, and alarm adopts acousto-optic integrated formula alarm.
9. cable duct water inlet warning device as claimed in claim 1, it is characterized in that, float ball is stainless steel float ball, the bottom of described float ball is cylindrical structure, the top of cylindrical structure and hemispherical dome structure, or cylindrical structure, or conical structure is connected to form hollow structure, described hollow structure top is provided with positioning and guiding projection, and described positioning and guiding is protruding plays axial location and guide effect with the inner hole of slide block.
10. cable duct water inlet warning device as claimed in claim 9, it is characterized in that, the ground bottom cable duct is provided with pit, and described bottom half is connected with pit bottom.
CN201510292107.2A 2015-05-30 2015-05-30 Cable duct water inlet alarm device Expired - Fee Related CN105043507B (en)

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CN112697224A (en) * 2021-03-23 2021-04-23 常州江苏大学工程技术研究院 Embedded liquid level detector convenient to maintain and embedding method
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