Wall-mounted workshop flooding signal alarm device

Abstract

The utility model discloses a wall-mounted workshop flooding signal alarm device. Generally, a throw-in type liquid level sensor or a float switch is provided with a flexible lead-out wire, so that the installation position is not easy to fix, and the wiring connection part of an external signal cable and the device is not easy to fix. The water level monitoring device comprises a protective shell, the protective shell is a shell with an opening in the bottom, and a water level monitoring sensor is fixed to the top face of the protective shell; the water level monitoring sensor is a top-mounted rod type magnetic floater reed pipe sensor, a sliding rod of the top-mounted rod type magnetic floater reed pipe sensor is provided with at least one set of alarm dry contacts, and the lower edge of the sliding rod of the top-mounted rod type magnetic floater reed pipe sensor and the bottom face of the protective shell are located on the same horizontal line. A flat pressing air hole used for exhausting air in the protective shell is formed in the top of the protective shell. The device is used for plant flooding signal alarm.

Description

Technical Field

[0001] The utility model relates to a wall-mounted flooded factory building signal alarm device. Background Art

[0002] The powerhouse of a hydropower station should be equipped with a flooded powerhouse alarm device. In the existing technology, immersion level sensors or float switches are often installed at the leakage points of the powerhouse, such as the pump room of the leakage sump or the entrance of the tailwater pipe, to send out an alarm signal when the water level is too high. However, due to the narrow installation environment of the leakage sump or tailwater pipe, the immersion level sensor or float switch generally has a flexible lead wire, which makes it difficult to fix the installation position, and it is easy to be stepped on or collided by maintenance or inspection staff, causing damage. The connection between the external signal cable and the device is not easy to fix. When disassembling, it is necessary to remove the wires and connect the wires, which is not convenient for installation. The installation site is relatively humid, and the wiring terminals are easily affected by moisture, resulting in false alarm signals, and it is not beautiful. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned technical problems and provide a wall-mounted flooded plant signal alarm device.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A wall-mounted flooded plant signal alarm device comprises a protective shell, wherein the protective shell is a shell with an opening at the bottom, and a water level monitoring sensor is fixed on the top surface of the protective shell;

[0006] The water level monitoring sensor is a top-mounted rod-type magnetic float reed switch sensor, the slide bar of the top-mounted rod-type magnetic float reed switch sensor has at least one set of alarm dry contacts, and the lower edge of the slide bar of the top-mounted rod-type magnetic float reed switch sensor is on the same horizontal line as the bottom surface of the protective housing;

[0007] The top of the protective shell is provided with a pressure-equalizing air hole for discharging the air inside the protective shell.

[0008] The wall-mounted flooded plant signal alarm device, the alarm dry contact includes a magnetic float and two clamp fasteners sleeved on the slide bar, and the two clamp fasteners are fixed on the slide bar to limit the magnetic float within the alarm dry contact interval.

[0009] The wall-mounted flooded plant signal alarm device has two groups of alarm dry contacts for the top-mounted rod-type magnetic float reed switch sensor.

[0010] The wall-mounted flooded plant signal alarm device has hanging ears installed on both sides of the protective shell.

[0011] The wall-mounted flooded plant signal alarm device, wherein the protective housing is installed on the wall of the plant leakage collection well pump room or the tailwater pipe entrance door 50 mm from the ground.

[0012] The wall-mounted flooded plant signal alarm device, the lead wire of the top-mounted rod-type magnetic float reed switch sensor is connected to the matching connecting cable through a quick connector, the lead wire jacket is provided with a first corrugated tube, and the matching connecting cable jacket is provided with a second corrugated tube.

[0013] The wall-mounted flooded plant signal alarm device, the quick connector is a mother-and-child quick connection plug. Beneficial Effects

[0014] 1. The utility model can be firmly and reliably installed in the hidden wall of the pump room of the leakage collection well of the factory building or the entrance door of the tailwater pipe. The protective shell can prevent damage caused by being stepped on or collided by maintenance or inspection personnel. The device as a whole has no wiring terminals, and the surface is mainly made of galvanized steel or stainless steel. It can be used for a long time in a humid environment without rusting due to moisture, or causing false alarm of signals due to short circuit, resulting in malfunction of the equipment. When replacing spare parts of the top-mounted rod-type magnetic float reed switch sensor, it can be quickly completed through the quick connector without removing wires and wiring, and has a simple structure, convenient and flexible installation, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 A schematic diagram of the structure of the protective shell.

[0017] Figure 3 It is the front view of the protective housing.

[0018] Figure 4 It is a structural diagram of a top-mounted rod-type magnetic float reed switch sensor;

[0019] In the figure: 1. Protective shell; 2. Top-mounted rod-type magnetic float reed switch sensor; 3. First bellows; 4. Quick connector; 5. Second bellows; 6. Matching connecting cable; 7. Flat-pressure air hole; 8. Hanging ear; 9. Internal threaded hole; 21. Hexagonal nut; 22. External threaded head; 23. First clamp fastener; 24. First magnetic float; 25. Second clamp fastener; 26. Second magnetic float; 27. Sliding rod. DETAILED DESCRIPTION

[0020] Reference Figure 1A wall-mounted flooded plant signal alarm device comprises a protective shell 1, wherein the protective shell is a shell with an opening at the bottom, a water level monitoring sensor is fixed on the top surface of the protective shell, and hanging ears are installed on both sides of the protective shell.

[0021] The water level monitoring sensor is firmly fastened to the protective housing 1, and the flooded plant signal alarm device is installed on the wall of the leakage collection well pump room or the tailwater pipe entrance door of the plant at a distance of 50 mm from the ground by installing the hanging ear 8. The water level can be monitored in real time through the water level monitoring sensor, and an alarm can be issued when the plant is flooded;

[0022] Reference Figure 2-Figure 3 The protective housing 1 is 80 mm long, 80 mm wide and 300 mm high. It is made of 3 mm thick galvanized square steel. One end of the top of the galvanized square steel is welded with a 3 mm galvanized steel sheet. The top galvanized steel sheet is processed with a flat pressure air hole 7, and the internal threaded hole 9 is processed for connecting the top-mounted rod-type magnetic float reed switch sensor 2. The mounting ears are processed on both sides; Example

[0023] The water level monitoring sensor is a top-mounted rod-type magnetic float reed switch sensor 2, and the slide bar of the top-mounted rod-type magnetic float reed switch sensor has at least one set of alarm dry contacts, and the lower edge of the slide bar 27 of the top-mounted rod-type magnetic float reed switch sensor is on the same horizontal line as the bottom surface of the protective housing;

[0024] The top of the protective shell is provided with a pressure-equalizing air hole 7 for discharging the air inside the protective shell;

[0025] The alarm dry contact includes a magnetic float and two clamp fasteners sleeved on the slide bar, and the two clamp fasteners are fixed on the slide bar to restrict the magnetic float in the alarm dry contact interval;

[0026] When a factory flooding accident occurs, water enters from the bottom of the protective shell, and the air inside the protective shell is discharged through the equalization pores. When the ground water depth exceeds the height of the magnetic float, the magnetic float is floated by buoyancy and a factory flooding alarm signal is issued, prompting the on-duty personnel to take measures to control the amount of water leakage. After taking drainage measures, the ground water depth is lower than the magnetic float, and the magnetic float slides down by gravity, and the first set of factory flooding alarm signals is restored. Example

[0027] Reference Figure 4 In order to better alarm for different water levels, unlike the first embodiment, the alarm dry contacts of the top-mounted rod-type magnetic float reed switch sensor are two groups;

[0028] The top-mounted rod-type magnetic float reed switch sensor 2 is connected to the protective housing 1 through an external thread head 22, the external thread head is 20 mm long, and after the connection is tightened, the lower edge of the slide bar 27 is basically at the same horizontal line as the protective housing 1; it contains two groups of alarm dry contacts, the first clamp fastener 23 fixes the first magnetic float 24 in the first group of flooded plant alarm dry contact intervals of the slide bar 27, the slide bar is 280 mm long, the first magnetic float 24 sends out the first group of flooded plant alarm alarm signals when it is 200 mm away from the lower edge of the slide bar 27, the second clamp fastener 25 fixes the second magnetic float 26 in the second group of flooded plant alarm dry contact intervals of the slide bar 27, and sends out the second group of flooded plant alarm alarm signals when it is 50 mm away from the lower edge of the slide bar 27; the top-mounted rod-type magnetic float reed switch sensor 2 is tightened as a whole by the hexagonal nut 21;

[0029] Use tools to firmly fasten the top-mounted rod-type magnetic float reed switch sensor 2 to the protective housing 1, install the flooded plant signal alarm device on the wall of the plant leakage collection well pump room or the tailwater pipe entrance door about 50 mm from the ground through the installation ear 8, connect the external signal cable with the matching connection cable 6, and the matching connection cable 6 is connected to the top-mounted rod-type magnetic float reed switch sensor 2 through the quick connector 4;

[0030] When a flooding accident occurs, water enters from the bottom of the protective shell 1, and the air inside the protective shell 1 is discharged through the equalization pores 7. When the ground water depth exceeds 100mm, the second magnetic float 26 is floated by buoyancy, and the second set of flooding alarm signals are issued to prompt the on-duty personnel to take measures to control the amount of water leakage. When the ground water depth exceeds 250mm, the first magnetic float 24 is floated by buoyancy, and the first set of flooding alarm signals are issued, which can be used for emergency measures such as shutting down the unit or closing the fast gate. After taking drainage measures, when the ground water depth is lower than 250mm, the first magnetic float 24 slides down by gravity, and the first set of flooding alarm signals are restored. When the ground water depth is lower than 100mm, the second magnetic float 25 slides down by gravity, and the second set of flooding alarm signals are restored; Example

[0031] In order to better realize the disassembly and assembly of the top-mounted rod-type magnetic float reed switch sensor, the difference from the above embodiment is that the lead wire of the top-mounted rod-type magnetic float reed switch sensor is connected to the matching connecting cable 6 through a quick connector 4, the lead wire jacket is provided with a first corrugated tube 3, the matching connecting cable jacket is provided with a second corrugated tube 5, and the quick connector is a mother-and-child quick connection plug.

[0032] The first bellows 3, the second bellows 5, the hexagonal nut 21, the external thread head 22, the first clamp fastener 23, the first magnetic float 24, the second clamp fastener 25, the second magnetic float 26 and the slide rod 27 are all made of stainless steel, and the protective shell 1 is made of galvanized steel. The entire device has no connection terminals and can be used for a long time in a humid environment without rusting due to moisture, or short circuit causing false signal alarm and equipment malfunction.

[0033] If the top-mounted rod-type magnetic float reed switch sensor 2 is damaged and needs to be replaced, the quick connector 4 is pushed open, the top-mounted rod-type magnetic float reed switch sensor 2 is removed, and the quick connector 4 is docked during installation. The installation is efficient, flexible, safe and reliable, which solves the cumbersome procedures of wire removal and wiring in the prior art and avoids malfunction of the equipment caused by misinterpretation of the wiring.

[0034] The device can be firmly and reliably installed in the hidden wall of the factory building's leaking sump pump room or the tailwater pipe entrance door. The protective casing can prevent damage caused by being stepped on or bumped by maintenance or inspection personnel. The device has no wiring terminals as a whole, and the surface is mainly made of galvanized steel or stainless steel. It can be used for a long time in a humid environment without rusting due to moisture, or causing false signal alarms and equipment malfunctions due to short circuits. When replacing spare parts of the top-mounted rod-type magnetic float reed switch sensor, the quick connector can be used to quickly complete the replacement without removing wires and wiring. It has a simple structure, is easy and flexible to install, and is safe and reliable.

Claims

1. A wall-mounted flooded plant signal alarm device, characterized by: It comprises a protective shell, wherein the protective shell is a shell with an opening at the bottom, and a water level monitoring sensor is fixed on the top surface of the protective shell; The water level monitoring sensor is a top-mounted rod-type magnetic float reed switch sensor, the slide bar of the top-mounted rod-type magnetic float reed switch sensor has at least one set of alarm dry contacts, and the lower edge of the slide bar of the top-mounted rod-type magnetic float reed switch sensor is on the same horizontal line as the bottom surface of the protective housing; The top of the protective shell is provided with a pressure-equalizing air hole for discharging the air inside the protective shell.

2. A wall-mounted flooded plant signal alarm device according to claim 1, characterized in that: The alarm dry contact comprises a magnetic float sleeved on the slide bar and two clamp fasteners. The two clamp fasteners are fixed on the slide bar to restrict the magnetic float within the alarm dry contact interval.

3. A wall-mounted flooded plant signal alarm device according to claim 2, characterized in that: The top-mounted rod-type magnetic float reed switch sensor has two groups of alarm dry contacts.

4. The wall-mounted flooded plant signal alarm device according to claim 1 is characterized by: Hanging ears are installed on both sides of the protective shell.

5. A wall-mounted flooded plant signal alarm device according to claim 4, characterized in that: The protective shell is installed on the wall of the leakage sump pump room or the tailwater pipe entrance door of the factory building 50mm away from the ground.

6. A wall-mounted flooded plant signal alarm device according to any one of claims 1 to 5, characterized in that: The lead wire of the top-mounted rod-type magnetic float reed switch sensor is connected to the matching connecting cable through a quick connector, the lead wire outer jacket is provided with a first corrugated tube, and the matching connecting cable outer jacket is provided with a second corrugated tube.

7. A wall-mounted flooded plant signal alarm device according to claim 6, characterized in that: The quick connector is a mother-and-child quick connection plug.

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