On-site liquid level integrated alarm system

Abstract

An in-situ liquid level integrated alarm system comprises a middle water tank and a relay control circuit. A high limiting contact and a low limiting contact are arranged in the middle water tank and are respectively used for measuring the high liquid level and the low liquid level in the water tank; the high limiting contact and the low limiting contact are connected to a detection loop of the relay control circuit; the contact switch state of the detection loop is input into the alarm loop; an alarm and an indicating lamp are arranged in the alarm loop; the alarm is an audio alarm. The indicating lamps comprise a high-position indicating lamp and a low-position indicating lamp. Liquid level monitoring and on-site warning condition indication are carried out on the multiple middle water tanks, a circuit formed by the system is convenient to implement, on-site sound warning condition notification can be achieved, on-site warning condition optical indication can be carried out, workers can directly carry out fault processing conveniently, and working efficiency and accuracy are improved.

Description

Technical Field

[0001] The invention relates to the field of electric power chemical water treatment, and in particular to an on-site liquid level integrated alarm system. Background Art

[0002] The intermediate water tanks of multiple sets of primary desalination equipment for existing chemical water treatment are installed between their respective cation exchangers and anion exchangers. The intermediate water tanks serve as buffer tanks between the anion and yin equipment. The liquid level, i.e. overflow or vacuum, can only be discovered through manual on-site inspections.

[0003] With the current situation of few staff and heavy workload, there is only one person on duty at the post, who conducts inspections once an hour, and each inspection takes about half an hour. If the intermediate water tank overflows or is emptied, if it is not discovered in time, the overflow of the first intermediate water tank will lead to a large amount of desalted water wasted, and the evacuation of the second intermediate water tank will inhale a large amount of air, causing damage to the intermediate pump, a short operating cycle of the first-level desalination equipment, and increased acid and alkali consumption, desalination water consumption, and electricity consumption of the regeneration desalination equipment; in addition, inspections require manpower and take a long time, and the probability of water level abnormalities between inspection intervals is high. Summary of the invention

[0004] The purpose of the present invention is to monitor the liquid level of multiple intermediate water tanks and indicate local alarm conditions, and to provide a local liquid level integrated alarm system.

[0005] An on-site liquid level integrated alarm system, comprising an intermediate water tank and a relay control circuit; characterized in that:

[0006] A high limit contact and a low limit contact are arranged in the intermediate water tank, and the high limit contact and the low limit contact are used to measure the high and low liquid levels in the water tank respectively;

[0007] The relay control circuit has a detection circuit; the high limit contact and the low limit contact are connected to the detection circuit of the relay control circuit;

[0008] The relay control circuit is provided with an alarm circuit; the contact switch state of the detection circuit is input into the alarm circuit; the alarm circuit is provided with an alarm and an indicator light; the alarm adopts an audio alarm, and the indicator lights include a high-position indicator light and a low-position indicator light.

[0009] The beneficial effects of the present invention are:

[0010] Compared with the prior art, the present invention can monitor the liquid level of multiple intermediate water tanks and indicate local alarms. The system circuit is easy to implement, can realize on-site sound alarm notification, and can perform local alarm optical indication, which is convenient for personnel to directly handle faults and improve work efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1This is the circuit diagram of the local liquid level integrated alarm system.

[0012] In the figure: G1 high limit contact, D1 low limit contact, J11 relay coil, J12 relay coil, K11 normally open switch, K12 normally closed switch, LF11 local indicator light, LF12 local indicator light, MF11 remote indicator light, MF12 remote indicator light, G2 high limit contact, D2 low limit contact, J21 relay coil, J22 relay coil, K21 normally open switch, K22 normally closed switch, LF21 local indicator light, LF22 local indicator light, MF21 remote indicator light, MF22 remote indicator light, W alarm. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] As shown in the figure, an on-site liquid level integrated alarm system includes:

[0015] The high limit contact G1 and the low limit contact D1 are arranged in the intermediate water tank. The high limit contact G1 and the low limit contact D1 are used to measure the high and low liquid levels in the water tank respectively. The high limit contact G1 and the low limit contact D1 are composed of two external contacts. The two external contacts are connected to the control circuit. When the stored liquid reaches the corresponding liquid level, it contacts the two external contacts. Due to the conductivity of the stored liquid, a loop is formed between the two external contacts, and the connected control circuit is turned on.

[0016] Take an intermediate water tank as an example, in which a high limit contact G1 and a low limit contact D1 are arranged and installed according to the high and low liquid levels.

[0017] The high limit contact G1 and the low limit contact D1 are connected to the relay control circuit.

[0018] A 24V DC power supply circuit is used in the relay circuit.

[0019] The detection circuit includes a high limit detection branch and a low limit detection branch.

[0020] The high limit contact G1 is connected in series with the coil of relay J11 and connected to the power supply circuit to form a high limit detection branch;

[0021] The low limit contact D1 is connected in series with the coil of relay J12 and connected to the power supply circuit to form a low limit detection branch;

[0022] Relay J11 normally open switch K11 and relay J12 normally closed switch K12 are connected in parallel and then connected in series with alarm W and connected to the power supply circuit to form an alarm branch;

[0023] The alarm uses an audio siren, which will emit an alarm audio when it is turned on.

[0024] Furthermore, the normally open switch K11 is connected in series with a high position indicator light, and when the normally open switch K11 is closed and turned on, the high position indicator light is used to indicate a high limit alarm. The normally closed switch K12 is connected in series with a low position indicator light, and when the normally closed switch K12 is closed and turned on, the low position indicator light is used to indicate a low limit alarm.

[0025] When the water level is between the high and low limits, the water level is normal; the high limit contact G1 is disconnected, and the normally open switch K11 is disconnected; at this time, the low limit contact D1 is turned on, the relay K12 coil is energized, and the normally closed switch K12 remains disconnected, so that the indicator lights are not on and the alarm does not work.

[0026] When the water level is higher than the high limit, the high limit contact G1 is turned on, the normally open switch K11 is closed and turned on, the alarm works and emits an alarm audio, and the high level indicator light is on.

[0027] When the water level is lower than the low limit, the low limit contact D1 is disconnected, the relay K12 coil loses power, the normally closed switch K12 is closed and turned on, the alarm works and emits an alarm audio, and the low level indicator light is on.

[0028] Furthermore, the high-level indicator light includes a local indicator light LF11 and a remote indicator light MF11 connected in parallel, wherein the local indicator light LF11 is located on the outer shell of the intermediate water tank, and the remote indicator light MF11 is located in the control box of the monitoring room.

[0029] When the high limit alarm occurs, both the local indicator light LF11 and the remote indicator light MF11 are powered on. The parallel indicator light circuit can realize alarm output redundancy and avoid display output failure. It is also convenient for practical application. When the audio alarm is issued, the single duty personnel can observe the specific position of the indicator light indoors or outdoors in time to quickly go to the fault point for troubleshooting.

[0030] Similarly, the low level indicator light includes the local indicator light LF12 and the remote indicator light MF12 connected in parallel. When the low limit alarm occurs, dual-location output light indication can also be performed.

[0031] In addition, for multiple intermediate water tanks in the chemical water treatment system, their respective relay control circuits can be independently connected. As shown in the figure, there is also a second intermediate water tank, and its relay alarm circuit is formed by G2 high limit contact, D2 low limit contact, J21 relay coil, J22 relay coil, K21 normally open switch, K22 normally closed switch, LF21 local indicator light, LF22 local indicator light, MF21 remote indicator light, and MF22 remote indicator light.

[0032] The alarm branches of each intermediate water tank can be integrated in parallel and connected to one alarm, so that multiple intermediate water tanks can share one audio alarm, and the specific high and low limit abnormalities of different intermediate water tanks can be indicated respectively through their corresponding high and low limit indicators.

[0033] In specific applications, multiple sets of high and low liquid level alarms for the intermediate water tanks of the primary desalination equipment are made. The high and low liquid level alarms for the intermediate water tanks consist of two contacts (one contact for each of the high and low levels of the water level in the water tank), wiring, and an alarm. They are simple to make and low in cost. Multiple sets of high and low liquid level alarms for water tanks are installed in a conspicuous position directly opposite the duty room, and the limit indicator lights are corresponding to the corresponding water tank number sequence. When a water tank is close to overflowing or being emptied, the alarm will sound and the light will flash, so that a single duty officer can find it in time at the first time.

[0034] The on-duty personnel may be in the monitoring room or on outdoor inspection when working. When the water level in a water tank is abnormal, an alarm audio prompts a single on-duty personnel, and the corresponding indicator light lights up. The on-duty personnel can know the specific water tank position number and the specific high and low limit abnormalities by observing the nearby light-emitting indicator lights, and can go directly to the fault point for troubleshooting, greatly improving work efficiency and accuracy.

[0035] Finally, it should be noted that the above description is only an explanation of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail, those skilled in the art can still modify the technical solutions described above or replace some of the technical features with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An on-site liquid level integrated alarm system, comprising an intermediate water tank and a relay control circuit; characterized in that: A high limit contact and a low limit contact are arranged in the intermediate water tank, and the high limit contact and the low limit contact are used to measure the high and low liquid levels in the water tank respectively; The relay control circuit has a detection circuit; the high limit contact and the low limit contact are connected to the detection circuit of the relay control circuit; The relay control circuit is provided with an alarm circuit; the contact switch state of the detection circuit is input into the alarm circuit; the alarm circuit is provided with an alarm and an indicator light; the alarm adopts an audio alarm, and the indicator lights include a high-position indicator light and a low-position indicator light.

2. According to claim 1, the on-site liquid level integrated alarm system is characterized in that: The detection circuit includes a high limit detection branch and a low limit detection branch; The high limit contact is connected in series with the first relay coil and connected to the power supply circuit to form a high limit detection branch; The low limit contact is connected in series with the second relay coil and connected to the power supply circuit to form a low limit detection branch.

3. According to claim 2, the on-site liquid level integrated alarm system is characterized in that: The first relay normally open switch and the second relay normally closed switch are connected in parallel and then connected to the power supply circuit to form an alarm circuit.

4. According to claim 3, the on-site liquid level integrated alarm system is characterized in that: An alarm and an indicator light are connected in series in the alarm circuit.

5. According to claim 3, the on-site liquid level integrated alarm system is characterized in that: The high-position indicator light is connected in series with the normally-open switch circuit of the first relay; the low-position indicator light is connected in series with the normally-closed switch circuit of the second relay.

6. The on-site liquid level integrated alarm system according to claim 1, characterized in that: The high-level indicator light includes a local indicator light and a remote indicator light connected in parallel; the low-level indicator light includes a local indicator light and a remote indicator light connected in parallel.

7. The on-site liquid level integrated alarm system according to claim 1, characterized in that: There are multiple intermediate water tanks; the alarm circuits of the intermediate water tanks share one alarm after being connected in parallel.

8. The on-site liquid level integrated alarm system according to claim 1, characterized in that: The high limit contact and the low limit contact are composed of two external contacts, and the two external contacts are connected to the relay control circuit as switches.

9. The on-site liquid level integrated alarm system according to claim 1, characterized in that: A 24V DC power supply circuit is used in the relay circuit.

10. The on-site liquid level integrated alarm system according to claim 6, characterized in that: The local indicator light is located on the external shell of the intermediate water tank, and the remote indicator light is located in the control box of the monitoring room.

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