CN216925998U

CN216925998U - Water leakage sensor device for machine room

Info

Publication number: CN216925998U
Application number: CN202220511663.XU
Authority: CN
Inventors: 戚耀刚
Original assignee: Shanghai Cangjie Intelligent Technology Co ltd
Current assignee: Shanghai Cangjie Intelligent Technology Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-07-08
Anticipated expiration: 2032-03-10

Abstract

A water leakage sensor device for a machine room comprises a voltage-stabilized power supply, a shell, a water leakage detection mechanism, a water level detection mechanism, a water leakage data sending circuit and a control circuit, wherein the voltage-stabilized power supply is connected with the shell; the water leakage detection mechanism comprises a metal sheet and a detection circuit, the metal sheet is arranged below the outer end of the shell, the water level detection mechanism comprises a force-sensitive resistor, a barrel body, a rubber sheet and a guide rod which are arranged together, the barrel body is arranged in the shell, the front end of the barrel body is positioned outside the shell, a fixing groove and a submersible pump are arranged on the ground of the machine room, and a voltage-stabilized power supply, the detection circuit, a water leakage data transmission circuit and a control circuit are arranged in the shell and are electrically connected with a water pump and the force-sensitive resistor. This novel whether can leak in the real-time detection computer lab and the degree of depth of leaking, can be for managers cell-phone propelling movement SMS and on-the-spot water level degree of depth data when leaking, distal end managers can master the condition of leaking in real time and the degree of depth of leaking, can also discharge ponding outdoor eminence automatically, brought the facility for relevant personnel, still guaranteed electrical equipment normal work and safety.

Description

Water leakage sensor device for machine room

Technical Field

The utility model relates to the technical field of water leakage detection equipment, in particular to a water leakage sensor device for a machine room.

Background

In regions such as a power distribution machine room, in order to prevent water leakage, which causes flooding of electrical equipment, which leads to failure of normal operation of the system, and electric shock accidents and the like, a water leakage sensor is generally installed at a proper position in the machine room (for example, a power distribution machine room used in a secondary water supply system has water leakage after being damaged due to the fact that a water tank, a water pump and other devices are installed nearby).

The existing water leakage sensor only has the function of prompting relevant personnel through an alarm after detecting water leakage, and the water leakage information received by the relevant personnel can be timely caught on the site for disposal, so that a large accident is prevented. Although the intelligent detection and management to a certain extent are realized, the intelligent detection and management is limited by the structure, when related personnel are far away from the site at intervals, the water leakage alarm prompt cannot be obtained, the related personnel cannot be disposed on the site in time, and the fault amplification can be caused by the probability. In addition, the existing water leakage sensor only has the function of water leakage prompting, and cannot give a water leakage depth prompt, so that related personnel can not master field water leakage data and make a related plan (for example, when the depth of accumulated water is too large, a manager can remotely turn off a power supply of a machine room). Finally, the water pump cannot be automatically started to drain water when water leaks, so that the electric equipment cannot be protected in the first time, and great potential safety hazards exist. Based on the above, it is particularly necessary to provide a water leakage sensor device which has a water leakage detection function, can remotely prompt related personnel and give a water leakage depth when water leaks, and can automatically start a water pump to drain water when water leaks.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects that the prior water leakage sensor cannot remotely prompt related personnel and give the water leakage depth when water leaks in a machine room due to the structural limitation, and the water pump can not be automatically started when water leaks, which not only brings inconvenience to related workers, but also can not effectively ensure the safe operation of electric equipment in a machine room, under the combined action of related mechanisms and circuits, when water leaks in the machine room, the short message can prompt relevant managers at the first time, and can also give a prompt of water leakage depth, a remote manager can master the water leakage condition and the water leakage depth in real time without being near the site, and when water leaks, the submersible pump can be automatically started to work to discharge accumulated water in the machine room to the high place outdoors, so that convenience is brought to related personnel, and the normal work and safety of electrical equipment in the machine room are effectively guaranteed.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a water leakage sensor device for a machine room comprises a stabilized voltage power supply and a shell, and is characterized by also comprising a water leakage detection mechanism, a water level detection mechanism, a water leakage data transmission circuit and a control circuit; the water leakage detection mechanism comprises at least two metal sheets and a detection circuit, and the two metal sheets are arranged on the outer side of the shell at intervals; the water level detection mechanism comprises a force-sensitive resistor, a cylinder, a film and a guide rod, wherein the film is arranged outside the upper end of the cylinder, the guide rod is arranged at the lower end of the film, a support plate is arranged in the cylinder, the middle part of the guide rod is positioned in a guide hole of the support plate, a top block is arranged at the lower end of the guide rod, the force-sensitive resistor is arranged at the lower end in the cylinder, the cylinder is arranged in a shell, the film is positioned at the outer end of the shell, the shell is arranged in a machine room, a water drainage tank is arranged on the ground in the machine room, and a water pump is arranged in the water drainage tank; the stabilized voltage power supply, the detection circuit, the water leakage data sending circuit and the control circuit are arranged in the shell; the signal output end of the water leakage detection mechanism is electrically connected with the signal input ends of the water leakage data transmission circuit and the control circuit, the power output end of the control circuit is electrically connected with the power input end of the submersible pump, and the force sensitive resistor is electrically connected with the control port of the water leakage data transmission circuit.

Further, the top block is in contact with a strain gage of a force sensitive resistor.

Furthermore, the detection circuit comprises a resistor and an NPN triode which are electrically connected, and the two metal sheets are electrically connected, wherein one metal sheet is connected with one end of the resistor, the other end of the resistor is connected with the base electrode of the NPN triode,

furthermore, the water leakage data sending circuit comprises a GPRS module, a single chip microcomputer module and a short message module which are electrically connected, the short message module is connected with the single chip microcomputer module and the GPRS module respectively, and the signal output end of the single chip microcomputer module is connected with the signal input end of the GPR module.

Further, the control circuit comprises a resistor, a PNP triode and a relay which are electrically connected, the base of the PNP triode is connected with one end of the resistor, and the collector of the PNP triode is connected with the positive power input end of the relay.

The utility model has the beneficial effects that: this novel water leakage detection mechanism can leak in the real-time detection computer lab, water level detection mechanism can the real-time detection regional water level depth of leaking, can the very first time be relevant managers 'mobile phone propelling movement SMS through SMS module when taking place to leak, data transmission circuit can be for relevant personnel's mobile phone propelling movement on-the-spot water level depth data, remote management personnel need not just can master the condition of leaking in real time near on-the-spot like this and the degree of depth of leaking, control circuit can also the automatic start immersible pump work discharge outdoor eminence with ponding in the computer lab when leaking, not only brought the facility for relevant personnel, electrical equipment normal work and safety in the computer lab have still been guaranteed in effect. Based on the above, the utility model has good application prospect.

Drawings

The utility model is further illustrated by the following figures and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the structure of the water level detecting mechanism of the present invention.

Fig. 3 is a circuit diagram of the present invention.

Detailed Description

As shown in fig. 1, 2 and 3, a water leakage sensor device for a machine room comprises a regulated power supply a1, a housing 1, a water leakage detection mechanism, a water level detection mechanism, a water leakage data transmission circuit 2 and a control circuit 3; the water leakage detection mechanism comprises two copper metal sheets T and a detection circuit 4, the two metal sheets T are connected to the lower part of the right outer side end of the shell 1 at a certain distance (2 mm) by glue, and a lead connected with the two metal sheets T enters the shell 1 through a hole formed in the right outer side end of the shell 1 (the hole is sealed by sealant); the water level detection mechanism comprises a force-sensitive resistor RT, a cylinder body 5, a rubber sheet 6 and a guide rod 7, wherein the lower end of the cylinder body 5 is of a closed structure, the upper end of the cylinder body is of an open mechanism, the rubber sheet 6 (with the thickness of 2 mm) is hermetically arranged outside the upper end of the cylinder body 5 by a metal ring and a screw nut, the middle part of the rubber sheet 6 is provided with an opening, the guide rod 7 is hermetically arranged at the lower end of the rubber sheet 6 by two nuts through external threads at the upper end of the guide rod 7, the middle part of the cylinder body 5 is welded with a support plate 8 with a guide hole at the middle part, the lower end of the guide rod 7 is led out to the inside and the outside of the cylinder body 5 through the guide hole of the support plate 8, the lower end of the guide rod 7 is provided with a round rubber block 9 through external threads at the outside thereof (the external threads at the lower end of the guide rod 7 are screwed into the middle part of the upper end of the rubber block 9 for internal thread fixation), the force-sensitive resistor RT is arranged on a circuit board, the circuit board is connected to the middle part of the inner lower end of the cylinder body 5 by glue, and the strain gauge of the force-sensitive resistor RT is positioned at the upper end, the front left lower end of the shell 1 is provided with an opening, the barrel 5 is longitudinally arranged in the left end of the shell 1, the front end of the barrel is positioned in the opening, the opening is sealed by sealant, the shell 1 is arranged on one side of the ground in a machine room, the ground in the machine room is provided with a fixing groove 10, the height of the upper end of the fixing groove 10 is slightly lower than the height of two metal sheets T, a submersible pump M is vertically placed in the fixing groove 10, the height of the upper end of the submersible pump M is lower than the height of the upper end of the fixing groove 10, and a drain pipe of the submersible pump M is positioned outside the machine room; the stabilized voltage supply A1, the detection circuit 4, the water leakage data transmission circuit 2 and the control circuit 3 are hermetically installed on the circuit board in the right end of the shell 1.

As shown in fig. 1, 2 and 3, the lower end of the rubber block 9 is in contact with the upper portion of the strain gauge of the force sensor RT. The stabilized voltage supply A1 is a finished product of a 220V/12V/500W AC-to-DC 12V switching power supply module; the detection circuit comprises a resistor R1 and an NPN triode Q1 which are connected through circuit board wiring, the resistor R1 and the NPN triode Q1 are connected with two metal sheets T through leads, one metal sheet T is connected with one end R1 of the resistor, the other end of the resistor R1 is connected with the base electrode of the NPN triode Q1, the water leakage data sending circuit comprises a GPRS module A4, a singlechip module A3 and a short message module A2 which are connected through circuit board wiring, the short message module A2 is connected with the singlechip module A3 and the pin 1 of the positive power input end of the GPRS module A4, the short message module A2 is connected with the pin 2 of the negative power input end of the singlechip module A3 and the GPRS module A4, the signal output end of the singlechip module A3 is connected with the signal input end of the GPR module A4 through an RS485 data line, and the antenna 11 of the GPRS module A4 is positioned outside the rear left end of the shell 1 (the leads connected with the lead connected with the antenna 11 into the shell through a rear end opening hole of the shell, and the hole is sealed by a sealant). The control circuit comprises a resistor R2, a PNP triode Q2 and a relay K1 which are connected through a circuit board, the base electrode of the PNP triode Q2 is connected with one end of a resistor R2, and the collector electrode of the PNP triode Q2 is connected with the positive power supply input end of the relay K1.

As shown in fig. 1, 2 and 3,

power input ends

1 and 2 of a regulated power supply a1 (the connected wires are led out through an opening at the left end of the shell, the opening is sealed by sealant), two control power input ends of a relay K1 and two poles of an alternating current 220V power supply are respectively connected through wires. The power output end 3 and the pin 4 of the voltage-stabilized power supply A1, the other end of the metal sheet T at the power input end of the water leakage detection mechanism, the emitting electrode of the NPN triode Q1, the end of the force-sensitive resistor RT (the pin 3 of the voltage-stabilized power supply A1) of the water level detection mechanism and the

pins

1 and 2 of the power input end GPRS module A4 of the water leakage data transmission circuit are respectively connected through leads. The collector of a signal output end NPN triode Q1 of the water leakage detection mechanism, the 3 pin of a short message module A2 of a signal input end of a water leakage data transmission circuit and the other end of a signal input end resistor R2 of a control circuit are connected through leads, and two normally open contact ends of a power output end relay K1 of the control circuit and two power input ends of a submersible pump M (working voltage alternating current 220V and power 1.2KW) are respectively connected through leads. The other end of the force sensitive resistor RT is connected with a pin 3 of the signal input end of the singlechip module A3. The emitter of the PNP triode Q2 is connected with the pin 3 of the positive power output end of the regulated power supply A1.

As shown in fig. 1, 2 and 3, after the 220V ac power supply enters the power input terminal of regulated power supply a1, pins 3 and 4 of regulated power supply a1 output stable dc12V power to enter the power input terminals of the water leakage detection mechanism, the water level detection mechanism and the water leakage data transmission circuit, so that the water leakage detection mechanism, the water level detection mechanism and the water leakage data transmission circuit are in a power-on working state. In the water leakage detection mechanism, when no water leakage occurs in a machine room site, and because no water is accumulated on the ground, the resistance between the two copper sheets T is infinite, so that the NPN triode Q1 is in a machine cut-off state, the rear-stage short message module A2 cannot send a short message, and the submersible pump M cannot be powered on to work; when water leakage occurs in a site of a machine room, the two copper sheets T are submerged due to ground accumulated water, and the resistance between the two copper sheets T is correspondingly reduced, so that the positive electrode of a 12V power supply can enter the base electrode of an NPN triode Q1 after being subjected to voltage reduction and current limitation (higher than 0.7V) through the two submerged copper sheets T and a resistor R1, the NPN triode Q1 is conducted with a collecting electrode to output a low level, the low level enters the other end of the resistor R2 and the pin 3 of the trigger signal input end of a short message module A2, then a short message module A2 (an SIM card is arranged inside, and the antenna terminal of the short message module is connected with an antenna 11) can send a pre-stored short message out through a wireless mobile network under the action of an internal circuit, and a mobile phone of a remote management person connected with the short message module A2 can know that the water leakage occurs in the site at the first time after receiving the short message. The low level output by the collector of the on-site water leakage NPN triode Q1 is subjected to voltage reduction and current limitation by the resistor R2 and then enters the base of the PNP triode Q2, so that the PNP triode Q2 conducts the high level output by the collector and enters the positive power input end of the relay K1, so that the relay K1 is electrified to attract the control power input end and the normally open contact end to be closed, and because the two normally open contact ends of the relay K1 and the two power input ends of the submersible pump M are respectively connected, the submersible pump M can be electrified to work at the moment and pump the water flowing into the fixed groove 10 out of the machine room; if water leakage is stopped subsequently, because the resistance between the two metal sheets T becomes infinite again, the NPN triode Q1 is cut off, the relay K1 loses power and does not attract any more, and unnecessary energy consumption and damage of the submersible pump M caused by idling of the submersible pump M are prevented.

As shown in fig. 1, 2 and 3, in the water level detection mechanism, when the water leakage occurs in the machine room, the rubber sheet 6 is gradually submerged, and in an actual situation, the larger the water leakage amount is, the deeper the water level in the machine room is, the larger the water pressure applied to the rubber sheet 6 is, the larger the acting force applied to the force sensitive resistor RT strain gauge by pushing the rubber block 9 backwards through the guide rod 7 is, the smaller the resistance value of the force sensitive resistor RT is, and thus, the 3-pin signal voltage of the 12V power supply anode entering the single chip microcomputer module a3 after being subjected to voltage reduction and current limitation through the force sensitive resistor RT is relatively high; the smaller the water leakage amount is, the shallower the water level in the machine room is, the lower the water pressure is, the smaller the water pressure borne by the rubber sheet 6 is, the smaller the acting force which pushes the rubber block 9 backwards through the guide rod 7 to act on the force-sensitive resistor RT strain gauge is, the larger the resistance value of the force-sensitive resistor RT is, and thus, the 3-pin signal voltage which enters the singlechip module A3 after the 12V power supply anode is subjected to voltage reduction and current limitation through the force-sensitive resistor RT is relatively low. The analog voltage signal entering the unilateral machine module A3 for dynamic change is converted into a digital signal after being acted by an internal circuit of the singlechip module A3, and then the digital signal is output to a signal input end of the GPRS module A4, and the GPRS module A4 transmits the water level voltage signal for dynamic change remotely through a wireless mobile network; after receiving the digital signal, the application in the mobile phone or the PC of the remote manager displays the field water level change in a waveform diagram or digital form (the high waveform diagram or the large number represents the high field water level, and vice versa), so that the remote manager can master the field water level depth data in real time. It should be noted that the remote smart phone or the PC receives the relevant data signal through its application, and displays the data signal in a wave form or a digital form, etc. as a mature internet of things data transceiving technology in the prior art, the application only uses the mature internet of things data technology to realize the receiving and displaying after the water level detection mechanism detects the water level data in the machine room, that is to say, the remote smart phone or the PC receives and displays the data not in the protection object of the application. Through all above-mentioned mechanisms and circuit combined action, whether this novel detection mechanism leaks in can real-time detection computer lab, water level detection mechanism can real-time detection the regional water level degree of depth of leaking, can the very first time be relevant managers's cell-phone propelling movement SMS through the SMS module when taking place to leak, data transmission circuit can be for relevant personnel cell-phone propelling movement on-the-spot water level degree of depth data, far-end managers need not just can master the condition of leaking in real time near on-the-spot and the degree of depth of leaking, control circuit can also the automatic start immersible pump work discharge outdoor eminence with ponding in the computer lab when leaking, not only brought the facility for relevant personnel, electrical equipment normal work and safety in the computer lab have still been guaranteed in the effect. In fig. 3, the resistances of the resistors R1 and R2 (voltage reduction and current limitation) are 4.7K and 10K, respectively; the model of the NPN triode Q1 is 9013; the model of the PNP triode Q2 is 9012; relay K1 is a DC12V relay; GPRS module a4 model ZLAN 8100; the model of a main control chip of the singlechip module A6 is STC12C5A60S 2; the short message module A2 is a short message alarm module of a GSM 800 model, a finished short message alarm module has two

power input ends

1 and 2 pins and signal input ends 3-8 pins, after a low level signal is input into each signal input end, the finished short message alarm module can send a short message through a wireless mobile network, the short message alarm module stores a short message, the embodiment stores 'machine room water leakage', and after the low level signal is input into the pin 3 of the signal input end of the short message alarm module, the short message alarm module can send a short message; the force sensitive resistor RT is a resistive thin film pressure sensor model FSR 402.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water leakage sensor device for a machine room comprises a stabilized voltage power supply and a shell, and is characterized by also comprising a water leakage detection mechanism, a water level detection mechanism, a water leakage data transmission circuit and a control circuit; the water leakage detection mechanism comprises at least two metal sheets and a detection circuit, and the two metal sheets are arranged on the outer side of the shell at intervals; the water level detection mechanism comprises a force-sensitive resistor, a cylinder, a film and a guide rod, wherein the film is arranged outside the upper end of the cylinder, the guide rod is arranged at the lower end of the film, a support plate is arranged in the cylinder, the middle part of the guide rod is positioned in a guide hole of the support plate, a top block is arranged at the lower end of the guide rod, the force-sensitive resistor is arranged at the lower end in the cylinder, the cylinder is arranged in a shell, the film is positioned at the outer end of the shell, the shell is arranged in a machine room, a water drainage tank is arranged on the ground in the machine room, and a water pump is arranged in the water drainage tank; the stabilized voltage power supply, the detection circuit, the water leakage data sending circuit and the control circuit are arranged in the shell; the signal output end of the water leakage detection mechanism is electrically connected with the signal input ends of the water leakage data transmission circuit and the control circuit, the power output end of the control circuit is electrically connected with the power input end of the submersible pump, and the force sensitive resistor is electrically connected with the control port of the water leakage data transmission circuit.

2. The water leakage sensor device for machine room as claimed in claim 1, wherein the top block is in contact with the strain gauge of the force sensitive resistor.

3. The water leakage sensor device for machine room as claimed in claim 1, wherein the detection circuit comprises a resistor and an NPN transistor electrically connected to each other, and the detection circuit is electrically connected to two metal plates, one of the metal plates is connected to one end of the resistor, and the other end of the resistor is connected to the base of the NPN transistor.

4. The water leakage sensor device for the machine room according to claim 1, wherein the water leakage data sending circuit comprises a GPRS module, a single chip microcomputer module and a short message module which are electrically connected, the short message module is respectively connected with the single chip microcomputer module and the GPRS module at two ends of the power supply input, and the signal output end of the single chip microcomputer module is connected with the signal input end of the GPR module.

5. The water leakage sensor device of claim 1, wherein the control circuit comprises a resistor, a PNP transistor and a relay, the resistor and the PNP transistor being electrically connected, the base of the PNP transistor being connected to one end of the resistor, and the collector of the PNP transistor being connected to the positive power input of the relay.