CN211927006U - Unwanted many principle redundant flood factory building monitoring liquid level signal device of preventing maloperation - Google Patents
Unwanted many principle redundant flood factory building monitoring liquid level signal device of preventing maloperation Download PDFInfo
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- CN211927006U CN211927006U CN202020496638.XU CN202020496638U CN211927006U CN 211927006 U CN211927006 U CN 211927006U CN 202020496638 U CN202020496638 U CN 202020496638U CN 211927006 U CN211927006 U CN 211927006U
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Abstract
The utility model provides a prevent redundant water logging factory building monitoring liquid level signal device of many principles of maloperation belongs to power station water logging factory building monitoring technology field. The utility model comprises a junction box at the upper part of the device, a bracket at the middle part, a wiring terminal row arranged in the junction box, and four cable fixing joints fixedly arranged at the lower part; the anti-collision connecting rod floating ball liquid level switch, the two capacitance type liquid level switches and the static pressure type liquid level meter are fixedly arranged on the lower portion of the mounting support, four liquid level monitoring signal sending parts are arranged on the lower portion of the mounting support, the upper portions of the four signal sending parts are fixedly connected with torsion-resistant waterproof cable fixed joints, and the torsion-resistant waterproof cable fixed joints are connected with the lower portion of the junction box through cables and are conducted to the signal monitoring parts and the junction box inner wiring terminal row. The utility model has the advantages that: by adopting the multi-principle redundancy design for preventing misoperation, the misoperation or no-action caused by the fault of a certain set of device can be effectively prevented.
Description
Technical Field
The utility model relates to a prevent redundant water logging factory building monitoring liquid level signal device of many principles of maloperation belongs to power station water logging factory building monitoring signal device technical field.
Background
In recent years, hydropower station plant flooding events caused by natural disasters such as rainstorm, debris flow and the like or electromechanical equipment faults continuously occur in China, so that great economic loss is caused, and the operation and personal safety of the hydropower station are seriously threatened.
The existing water-flooded workshop water level monitoring mainly adopts a float type liquid level switch, and an anti-collision device is not added. Sometimes, in order to prevent misjudgment, two sets of same liquid level switches are adopted for monitoring, and when the two sets of same liquid level switches send out alarm signals, the factory building accident is judged to be flooded. However, due to the single monitoring principle, when a factory accident occurs, various floaters and oil can float on the water surface, possibly causing the blockage of the float type liquid level switch, and at the moment, the float type liquid level switch may not normally send out an alarm signal. Usually, if the float of the float type liquid level switch is touched when dust on the float type liquid level switch is cleaned, false alarm water flooding workshop signals can be caused.
Because only adopt float type level switch's mode not have analog quantity signal output, when the power station takes place the factory building accident of flooding, the power station personnel can't know the water level value data of being flooded, and it is inconvenient to bring for emergency treatment of power station personnel.
SUMMERY OF THE UTILITY MODEL
For solving the problem among the prior art, the utility model provides a prevent redundant water logging factory building monitoring liquid level signal device of maloperation many principles can solve the wrong report signal among the prior art and can't specifically know the problem of water level numerical value through many principles prevent maloperation liquid level monitoring signal device.
The utility model provides a false-action-preventing multi-principle redundant flooding workshop monitoring liquid level signal device, which comprises an upper junction box, wherein a wiring terminal row is fixedly arranged in the junction box, two cable fixed joints are fixedly arranged on the upper part, four cable fixed joints are fixedly arranged on the lower part, a mounting bracket is arranged in the middle of the device, four liquid level monitoring signal sending parts are fixedly arranged on the lower part of the mounting bracket, an anti-collision connecting rod floating ball liquid level switch, a static pressure liquid level meter and two capacitance type liquid level switches are respectively arranged on the lower part of the mounting bracket through a fixed seat, the four cable fixed joints are fixedly connected on the upper parts of the four liquid level monitoring signal sending parts, the four cable fixed joints on the lower part of the junction box and the four cable fixed joints connected with the four liquid level monitoring signal sending parts are connected through cables and are conducted to the wiring terminal row in the four liquid, and the two cable fixing joints on the upper part of the junction box are connected with the outside.
The utility model discloses do further improvement, prevent bumping formula connecting rod floater liquid level switch and be equipped with and prevent bumping pipe, floater, measuring staff, prevent bumping and leave suitable clearance between pipe and the floater.
The utility model discloses do further improvement, prevent bumping the pipe lower extreme and be equipped with the inlet opening, the upper end is equipped with the concora crush hole.
The utility model discloses make further improvement, the fixing base is the adjustable fixing base.
The utility model discloses do further improvement, be waterproof fixed joint with terminal box fixed connection's cable fixed joint.
The utility model discloses do further improvement, be resistant the waterproof fixed joint of formula of turning round with installing support fixed connection's cable fixed joint.
The utility model discloses do further improvement, the cable is water-fast resistant oily cable.
The utility model discloses do further improvement, capacitanc level switch's action point sets up the intermediate position at the probe.
The utility model discloses make further improvement, static pressure type level gauge can be along with the change output real-time 420mA analog quantity signal of measured point water level.
The utility model has the advantages that: the utility model adopts three different principles for monitoring, has wider application range, can effectively avoid the defects of a device adopting a single measurement principle, adopts the anti-collision tube, can effectively prevent the false signal caused by human factors, can ensure that the internal water level is relatively stable by the anti-collision tube water inlet hole and the flat pressure hole, can still effectively monitor and send out a stable signal when the fluctuation of the water level outside the anti-collision tube is large, the static pressure type liquid level meter has 4-20mA analog quantity output, the signal is sent to the relevant equipment of a hydropower station, when the hydropower station has a water logging factory accident, the hydropower station personnel can accurately know the water level value data of a monitoring point, and can compare the two-stage alarm water level preset by the data with the other two liquid level switches, the action point of the capacitance type liquid level switch is arranged at the middle position of the probe, and the action can be carried out when the water level is higher than the action point, therefore, the air conditioner can reliably work at a position where air is wet and even condensation and condensation can occur, and misoperation can be avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. 2, 5, 6, 7 and 8 waterproof cable fixing joints, 3 terminal block rows and 4 terminal boxes; 9. 10, 11, 12 cable resistant to water and oil; 13. 14, 15 and 16 torsion-resistant waterproof cable fixing joints; 17. 18 adjustable fixing seat mounting brackets, 20 flat pressing holes of anti-collision pipes, 21 anti-collision pipes and 22 anti-collision type connecting rod floating ball liquid level switches; 23. 26 capacitive level switches; 24. 25 floating balls, 27 static pressure type liquid level meters, 28 anti-collision pipe water inlet holes and 29 measuring rods.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
as shown in fig. 1, waterproof cable fixing joints 1, 2, 5, 6, 7, 8 are installed at the outer side of a junction box 4, the waterproof cable fixing joints 1, 2 are used for fixing external power cables and signal cables, and a terminal block 3 is fixed inside the junction terminal box 4;
the static pressure type liquid level meter 27 is fixed on the mounting bracket 19, and a waterproof and oil-proof cable 9 of the static pressure type liquid level meter 27 passes through a torsion-resistant waterproof cable fixing joint 16 fixedly connected with the static pressure type liquid level meter 27 and a waterproof cable fixing joint 8 fixedly connected with the junction box and enters the junction box 4 to be connected with the wiring terminal row 3; the static pressure type liquid level meter 27 can output a real-time 4-20mA analog quantity signal along with the change of the water level of a measured point;
the capacitance type liquid level switch 26 is fixed on the mounting bracket 19 through the adjustable fixing seat 17, and the waterproof and oil-proof cable 10 of the capacitance type liquid level switch 26 passes through the torsion-resistant waterproof cable fixing joint 15 fixedly connected with the upper part of the capacitance type liquid level switch 26 and the cable fixing joint 7 fixedly connected with the lower part of the junction box 4 to enter the junction box 4 to be connected with the wiring terminal row 3; when the capacitance type liquid level switch 26 monitors that the water level of the measured point reaches the position of the water level 1, a pair of switching value contact signals can be output;
the capacitance type liquid level switch 23 is fixed on the mounting bracket 19 through the adjustable fixing seat 18, and the waterproof and oil-proof cable 11 of the capacitance type liquid level switch 23 passes through the torsion-resistant waterproof cable fixing joint 14 fixedly connected with the upper part of the capacitance type liquid level switch 23 and the waterproof cable fixing joint 6 fixedly connected with the lower part of the junction box 4 to enter the junction box 4 to be connected with the wiring terminal row 3; when the capacitance type liquid level switch 23 detects that the water level of the measured point reaches the position of the water level 2, a pair of switching value contact signals can be output; the adjustable fixed seat 17 and the adjustable fixed seat 18 are convenient for installing and adjusting the installation position of the capacitance type liquid level switch.
The anti-collision type connecting rod floating ball liquid level switch 22 is fixed on the mounting bracket 19, and the waterproof and oil-proof cable 12 of the anti-collision type connecting rod floating ball liquid level switch 22 passes through the torsion-proof type waterproof cable fixing joint 13 fixedly connected with the upper part of the anti-collision type connecting rod floating ball liquid level switch 22 and the waterproof cable fixing joint 5 fixedly connected with the lower part of the junction box 4 to enter the junction box 4 to be connected with the wiring terminal row 3; the two floating balls 24 and 25 are strung on the measuring rod 29 and can float up and down along with the change of the water level, when the water level of a measured point reaches the position of the water level 1, the switching value contact point corresponding to the floating ball 24 acts, when the water level of the measured point reaches the position of the water level 2, the switching value contact point corresponding to the floating ball 25 acts, the anti-collision pipe 21 is provided with a water inlet hole 28 and a flat pressing hole 20, the anti-collision pipe 21 is fixed on the outer sides of the floating balls 24 and 25 and is provided with a gap, and the anti-collision pipe 21 can effectively prevent the false action caused by the fact that the floating balls 24 and 25 are; when water enters the anti-collision pipe 21 from the water inlet hole 28, the water can only slowly enter and slowly exit, so that the water level in the anti-collision pipe 21 is more stable than the external water level.
The utility model discloses a working process and theory of operation:
the mounting bracket 19 and the junction box 4 are mounted at monitoring points, such as a sump pit layer, a corridor layer, a waterwheel room, a tubular turbine unit bubble head and the like.
When monitoring the liquid level of the plant, when the water level of the monitoring point is higher than the water level 1 and less than the water level 2, the current signal output by the static pressure type liquid level meter 27 is a current value corresponding to the water level 1 and less than the water level 2, the switching value contacts corresponding to the capacitance type liquid level switch 26 and the floating ball 25 of the anti-collision type connecting rod floating ball liquid level switch 22 are both in a closed state, and accordingly, the signal can judge that the water level of the monitoring point is higher than the water level 1 and less than the water level 2 and is in an alarm state of the plant.
When the water level of the monitoring point is higher than the water level 2, the current signal output by the static pressure type liquid level meter 27 is a current value corresponding to the water level 2, the switch contacts corresponding to the floating balls 24 of the capacitance type liquid level switch 23 and the anti-collision type connecting rod floating ball liquid level switch 22 are both in a closed state, and accordingly the water level of the monitoring point is judged to be higher than the water level 2 according to the signal and is in a water-flooded workshop accident state.
If the measuring element with a certain principle fails to send a signal by mistake or does not send a signal, the other two monitoring elements with the measuring principle can still monitor normally, a distinguishing mode of taking three or two is adopted, and if two or more monitoring elements send signals, the fact that the workshop is flooded is judged. And judging that the factory building phenomenon is not flooded under other conditions.
When the water level of the monitoring point is lower than the water level 1, the current signal output by the static pressure type liquid level meter 27 is smaller than the current value corresponding to the water level 1, the switching value contacts of the capacitance type liquid level switches 23 and 26 and the anti-collision type connecting rod floating ball liquid level switch 22 are all in an off state, and accordingly the water level is judged to be lower than the water level 1, and the factory building phenomenon is not flooded. The corresponding current values, the switch contacts of the capacitance type liquid level switches 23 and 26 and the anti-collision type connecting rod floating ball liquid level switch 22 are all in a disconnected state, and accordingly the water level is judged to be lower than the water level 1 through the signals, and the factory building phenomenon is not flooded.
The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the present invention are within the protection scope of the present invention.
Claims (8)
1. The utility model provides a redundant watered factory building monitoring liquid level signal device of many principles of anti-maloperation which characterized in that: including upper portion terminal box (4), terminal box inside sets firmly binding post row (3), and four cable fixed joint (5, 6, 7, 8) are set firmly to upper portion two cable fixed joint (1, 2), lower part, device middle part is equipped with installing support (19), four liquid level monitoring signal of installing support lower part fixed mounting send parts, prevent bumping formula connecting rod floater liquid level switch (22), static pressure formula level gauge (27), capacitanc liquid level switch (23), (26) are installed in installing support (19) lower part through fixing base (18), (17) respectively, four cable fixed joint (13, 14, 15, 16) are connected to four liquid level monitoring signal send part upper portion fixed connection, cable fixed joint (5, 6, 7) that set firmly with terminal box (4) lower part, 8) And cable fixed joints (13, 14, 15, 16) fixedly connected with the upper parts of the four liquid level monitoring signal sending parts are connected through cables (9, 10, 11, 12) and conducted to the four liquid level monitoring signal generating parts and the wiring terminal strip (3) in the junction box (4), and the cable fixed joints (1) and (2) are externally connected with power cables and signal cables.
2. The malfunction-prevention multi-principle redundant flooded building monitoring liquid level signal device of claim 1, wherein: the anti-collision connecting rod floating ball liquid level switch (22) is provided with an anti-collision pipe (21), floating balls (24, 25) and a measuring rod (29), and a proper gap is reserved between the anti-collision pipe (21) and the floating balls (24, 25).
3. The malfunction-prevention multi-principle redundant flooded building monitoring liquid level signal device of claim 2, wherein: the lower end of the anti-collision pipe (21) is provided with a water inlet hole (28), and the upper end is provided with a flat pressing hole (20).
4. The malfunction-prevention multi-principle redundant flooded building monitoring liquid level signal device of claim 2, wherein: the anti-collision type connecting rod floating ball liquid level switch (22) can output two pairs of switching value contact signals.
5. The device of any one of claims 1 to 4, wherein the device comprises: the fixing seats (17) and (18) are adjustable fixing seats.
6. The malfunction-prevention multi-principle redundant flooded building monitoring liquid level signal device according to claim 5, wherein: the capacitance type liquid level switches (23) and (26) respectively output a pair of switching value contact signals, and the action points of the capacitance type liquid level switches (23) and (26) are arranged in the middle of the probes.
7. The device of claim 6, wherein the signal level signal for monitoring the submerged plant comprises: and the cable fixed joints (1, 2), (5, 6, 7 and 8) fixedly connected with the junction box are waterproof fixed joints.
8. The malfunction-prevention multi-principle redundant flooded building monitoring liquid level signal device of claim 1, wherein: the cables (9, 10, 11, 12) are water-resistant and oil-resistant cables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020496638.XU CN211927006U (en) | 2020-04-07 | 2020-04-07 | Unwanted many principle redundant flood factory building monitoring liquid level signal device of preventing maloperation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020496638.XU CN211927006U (en) | 2020-04-07 | 2020-04-07 | Unwanted many principle redundant flood factory building monitoring liquid level signal device of preventing maloperation |
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| CN211927006U true CN211927006U (en) | 2020-11-13 |
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| CN202020496638.XU Active CN211927006U (en) | 2020-04-07 | 2020-04-07 | Unwanted many principle redundant flood factory building monitoring liquid level signal device of preventing maloperation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776623A (en) * | 2021-08-08 | 2021-12-10 | 中国船舶重工集团公司第七一九研究所 | Ship sewage tank liquid level sensor |
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2020
- 2020-04-07 CN CN202020496638.XU patent/CN211927006U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776623A (en) * | 2021-08-08 | 2021-12-10 | 中国船舶重工集团公司第七一九研究所 | Ship sewage tank liquid level sensor |
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