Water level monitoring and alarming device for water collecting tank of cooling tower of air compressor

Abstract

The utility model discloses a water level monitoring and alarming device for a water collecting tank of a cooling tower of an air compressor. The water level monitoring and alarming device comprises the cooling tower, the water collecting tank, a joint, a transmission pipe, a liquid level meter, a bracket, a proximity switch and an audible and visual alarm, the water collecting tank is connected below the cooling tower, one end of the transmission pipe penetrates through and is connected to the bottom of the water collecting tank through the connector, the other end of the transmission pipe is connected with the bottom of the side face of the liquidometer, the support is connected to the upper area of the side face of the liquidometer, the proximity switch is connected to the support, and the audible and visual alarm is connected with the proximity switch. Compared with the prior art, the side face of the liquid level meter is connected with the sensor, when the floating ball of the liquid level meter drives the induction iron block connected with the liquid level rod to descend to the position close to the proximity switch, the sensor transmits an electric signal to control the audible and visual alarm to be turned on, operation and maintenance personnel are warned to supplement water in time, and triggering is more sensitive compared with a common floating ball switch; warning can be given out in time in the water shortage state, and downtime of the air compressor caused by water shortage of cooling circulating water of the cooling tower is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of liquid level monitoring and alarm system, in particular to a kind of air compressor cooling tower sump water level monitoring alarm device. BACKGROUND

[0002] Centralized air compression station cooling tower system is not equipped with cooling circulating water reserve sump, and the cooling circulating water is evaporated and consumed in the process of air cooling circulation, which may cause the cooling effect of the cooling tower to decrease, even cause equipment failure, so that accurate and effective liquid level monitoring and warning device is needed to accurately feedback the liquid level of the cooling tower sump in real time and send a warning to the operator when the liquid level is too low.

[0003] In the existing air compressor cooling tower sump water level monitoring alarm device, a common float switch is usually used directly, and the output of the liquid level warning switch signal is intervened by the magnet inside the float ball, but the internal space of the cooling tower sump is small, and the water in the sump is little, so the float switch trigger is not sensitive under small stroke, and the signal is not triggered under the condition of water shortage, thereby generating false signals, which cannot accurately monitor the liquid level of the sump and cannot perform low-liquid-level water shortage alarm, so the operator needs to observe the liquid level of the sump on the cooling tower every day and replenish water in time, which is a heavy workload and may cause the cooling tower to be out of service due to lack of water in the cooling circulating water if the inspection is not timely. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem to provide a kind of air compressor cooling tower sump water level monitoring alarm device, when the float ball of liquid level gauge drives the inductive iron block connected with liquid level rod to descend to the position close to proximity switch, sensor receives the inductive signal of inductive iron block, and sensor transmits electric signal through intermediate relay to control sound and light alarm to open, warning operator to replenish water in time, which is more sensitive than common float switch trigger, and can also send a warning in time under the condition of water shortage to prevent the cooling tower from being out of service due to lack of water in the cooling circulating water.

[0005] The utility model is implemented by the following technical solutions:

[0006] A kind of air compressor cooling tower sump water level monitoring alarm device, including cooling tower, further including sump, the upper end of the side of cooling tower is connected with inlet pipe, the bottom end of the side of sump is connected with backwater pipe, sump is installed below cooling tower, the bottom surface of sump is connected with connector, connector is connected with transmission pipe, transmission pipe is connected with liquid level gauge, the upper region of the side of liquid level gauge is connected with support, the inner side of support is connected with proximity switch, proximity switch is connected with sound and light alarm.

[0007] Further, the connector is a water tank special connector, one end of the transmission pipe passes through the connector and is communicated to the inner bottom of the sump, and the other end is connected with the bottom end of the side of the liquid level gauge.

[0008] Further, the liquid level gauge comprises a barrel, a float ball, a liquid level rod and a positioning end cover, the upper half of the barrel is connected with a vertical sliding groove, the bottom of the barrel is connected with a blowdown valve, the positioning end cover is connected to the top of the barrel, the float ball is slidingly connected inside the barrel, and the diameter of the float ball is slightly smaller than the inner diameter of the barrel.

[0009] Further, the liquid level rod is vertically connected to the top end of the float ball, the vertical distance from the bottom end of the float ball to the top end of the liquid level rod is greater than the height of the barrel, the center of the positioning end cover is vertically connected with a circular hole, the diameter of the hole is slightly larger than the cross-sectional diameter of the liquid level rod, and the top of the liquid level rod penetrates through the hole of the positioning end cover and is slidingly connected with the positioning end cover.

[0010] Further, the liquid level rod is vertically connected with a connecting rod near the bottom, the connecting rod is slidingly connected to the vertical sliding groove and penetrates through the barrel, the vertical distance from the bottom end of the float ball to the bottom end of the connecting rod is equal to the vertical distance between the inner bottom surface of the main body of the water collecting pool and the inner bottom surface of the support, and the connecting rod is connected with an inductive iron block.

[0011] Further, the inner side height of the support is equal to the inner side height of the main body of the water collecting pool, and the bottom of the support is located at the same horizontal position as the upper half of the water collecting pool.

[0012] Further, the proximity switch is a magnetic induction sensor, the signal receiving end of the proximity switch is opposite to the vertical sliding groove of the barrel, the proximity switch comprises a low liquid level switch and an extremely low liquid level switch, the low liquid level switch is connected to the middle position of the inner side of the support, and the extremely low liquid level switch is connected to the bottom position of the inner side of the support.

[0013] Further, the sound-light alarm is a rotating warning light, and the proximity switch is connected with the sound-light alarm through an intermediate relay.

[0014] Compared with the prior art, the utility model has the following obvious advantages:

[0015] Firstly, the utility model uses a liquid level gauge to monitor the water volume of the cooling tower water collecting pool, the liquid level gauge and the cooling tower water collecting pool are connected through a U-shaped pipe conduction mode, the liquid level is synchronized, the float ball in the liquid level gauge floats up and down with the change of the liquid level, the operation and maintenance personnel can judge the change of the liquid level through the liquid level rod vertically connected to the top of the float ball, the water volume monitoring mode is simple and convenient, the cost is low, the signal conduction is stable and accurate, and the water level data feedback of the water collecting pool is accurate.

[0016] The utility model discloses a liquid level monitoring and alarming device for cooling tower water collecting pool, which comprises a cooling tower, a water collecting pool, a joint, a transmission pipe, a liquid level meter, a support and a proximity switch.

[0017] The utility model discloses a liquid level monitoring and alarming device for cooling tower water collecting pool, which comprises a cooling tower, a water collecting pool, a joint, a transmission pipe, a liquid level meter, a support and a proximity switch. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the structure schematic diagram of liquid level meter and inductive switch.

[0020] Among them, the relationship between the sign and the corresponding name is as follows:

[0021] 1, cooling tower, 101, inlet pipe, 2, water collecting pool, 201, backwater pipe, 3, joint, 4, transmission pipe, 5, liquid level meter, 501, barrel body, 502, float ball, 503, liquid level rod, 504, inductive iron block, 505, positioning end cover, 506, blowdown valve, 6, support, 7, proximity switch, 701, low liquid level switch, 702, very low liquid level switch, 8, audible and visual alarm. DETAILED DESCRIPTION

[0022] The utility model will be introduced in detail below in combination with the drawings.

[0023] As Figure 1 And Figure 2 The utility model provides a kind of air compressor cooling tower water collecting pool water level monitoring and alarming device, including cooling tower 1, water collecting pool 2, joint 3, transmission pipe 4, liquid level meter 5, support 6, proximity switch 7, audible and visual alarm 8;In this embodiment, the side upper end of cooling tower 1 is connected with inlet pipe 101, the side bottom end of water collecting pool 2 is connected with backwater pipe 201, water collecting pool 2 is installed below cooling tower 1, joint 3 is water tank special joint, joint 3 is connected in the bottom surface of the main part of water collecting pool 2, one end of transmission pipe 4 passes through joint 3 and is communicated to the inside bottom of water collecting pool 2, the other end is connected with the side bottom end of liquid level meter 5, transmission pipe 4 and liquid level meter 5 are all made by pp pipe material welding.

[0024] The liquid level meter 5 comprises a barrel 501, a floating ball 502, a liquid level rod 503 and a positioning end cover 505, the upper half of the barrel 501 is connected with a vertical sliding groove, the bottom of the barrel 501 is connected with a blowdown valve 506, the blowdown valve 506 is a pp ball valve, the positioning end cover 505 is connected at the top of the barrel 501, the floating ball 502 is made of stainless steel and is slidingly connected in the barrel 501, the diameter of the floating ball 502 is slightly smaller than the inner diameter of the barrel 501, the liquid level rod 503 is vertically connected at the top of the floating ball 502, the vertical distance from the bottom of the floating ball 502 to the top of the liquid level rod 503 is greater than the height of the barrel 501, the positioning end cover 505 is vertically connected with a circular hole in the middle position, the diameter of the hole is slightly larger than the cross-sectional diameter of the liquid level rod 503, the top of the liquid level rod 503 penetrates through the hole of the positioning end cover 505 and is slidingly connected with the positioning end cover 505, a connecting rod is vertically connected on the rod of the liquid level rod 503 and slidingly connected in the vertical sliding groove of the barrel 501 and penetrates through the barrel 501, the vertical distance from the bottom of the floating ball 502 to the bottom of the connecting rod is equal to the vertical distance from the inner bottom surface of the main body part of the water collecting pool 2 to the inner bottom surface of the support 6, and the end of the connecting rod is connected with an induction iron block 504.

[0025] The support 6 is connected on the upper region of the side of the liquid level meter 5, the inner height of the support 6 is equal to the inner height of the main body part of the water collecting pool 2, the bottom of the support 6 corresponds to the upper half of the water collecting pool 2 in the horizontal direction, a proximity switch 7 is connected on the inner side of the support 6, the proximity switch 7 is a magnetic induction sensor, the signal receiving end of the proximity switch 7 is opposite to the vertical sliding groove of the barrel 501, the proximity switch 7 comprises a low liquid level switch 701 and an extremely low liquid level switch 702, the low liquid level switch 701 is connected at the middle position close to the support 6, the extremely low liquid level switch 702 is connected at the bottom position close to the support 6, an audible and visual alarm 8 is an LTD-1101J rotary warning lamp, and the proximity switch 7 is connected with the audible and visual alarm 8 through an intermediate relay.

[0026] In use, as hot water continuously enters the cooling tower 1 from the water inlet pipe 101, the water cooled by air cooling drops to the water collecting pool 2 below the cooling tower 1, the cooling water is transmitted back to the cooling system through the water return pipe 201, the cooling water in the water collecting pool 2 is continuously evaporated and reduced in the air cooling circulation, the liquid level of the cooling water in the water collecting pool 2 is continuously reduced, the liquid level meter 5 and the water collecting pool 2 are connected through the U-shaped pipe conduction mode to realize the liquid level synchronization, the floating ball 502 in the liquid level meter 5 floats up and down with the change of the liquid level, and the operating and maintaining personnel can judge the change of the liquid level of the cooling water in the water collecting pool 2 according to the position change of the liquid level rod 503 protruding from the positioning end cover 505, when it is necessary to reset the state of the liquid level meter 5, the operating and maintaining personnel can open the blowdown valve 506 to drain the accumulated water and then close the blowdown valve 506.

[0027] When the amount of cooling water in the water collecting pool 2 is reduced by more than half, as the float ball 502 moves downward, the inductive iron block 504 connected to the liquid level rod 503 gradually approaches the low liquid level switch 701 connected to the support 6, when the magnetic induction sensor of the low liquid level switch 701 receives the induction signal of the inductive iron block 504, the low liquid level switch 701 sends an electric signal, and the sound and light alarm 8 is opened through the intermediate relay control, warning the operation and maintenance personnel that the cooling water in the water collecting pool 2 is in a low liquid level state and needs to be replenished.

[0028] If the operation and maintenance personnel do not replenish water in time, the amount of cooling water in the water collecting pool 2 continues to decrease, and the iron block 504 gradually approaches the extremely low liquid level switch 702 connected to the inner side bottom of the support 6, when the magnetic induction sensor of the extremely low liquid level switch 702 receives the induction signal of the inductive iron block 504, the extremely low liquid level switch 702 sends an electric signal, and the sound and light alarm 8 is opened through the intermediate relay control, at this time the inductive iron block 504 slides to the inner side bottom of the support 6, if the operation and maintenance personnel do not replenish water for the water collecting pool 2 in time, the sound and light alarm 8 will keep running, continuously warning the operation and maintenance personnel that the cooling water in the water collecting pool 2 is in an extremely low liquid level state and needs to be replenished as soon as possible.

[0029] The above-mentioned embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent transformation or modification according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A water level monitoring and alarm device for a cooling tower water collection tank of an air compressor, comprising a cooling tower (1) and a water collection tank (2), wherein an inlet pipe (101) is connected to the upper side of the cooling tower (1), and a return pipe (201) is connected to the bottom side of the water collection tank (2), and the water collection tank (2) is installed below the cooling tower (1), characterized in that: The bottom surface of the water collecting pool (2) is connected with a joint (3), the joint (3) is connected with a transmission pipe (4), the transmission pipe (4) is connected with a liquid level meter (5), the upper side of the liquid level meter (5) is connected with a bracket (6), the inner side of the bracket (6) is connected with a proximity switch (7), and the proximity switch (7) is connected with an audible and visual alarm (8).

2. The water level monitoring and alarming device for the water collecting pool of the air compressor cooling tower according to claim 1, characterized in that: The joint (3) is a special joint for the water tank, one end of the transmission pipe (4) penetrates through the joint (3) and is connected to the inner bottom of the water collecting pool (2), and the other end is connected with the side bottom end of the liquid level meter (5).

3. The water level monitoring and alarming device for the water collecting pool of the air compressor cooling tower according to claim 1, characterized in that: The liquid level meter (5) comprises a barrel (501), a floating ball (502), a liquid level rod (503) and a positioning end cover (505), the upper half of the barrel (501) is connected with a vertical sliding groove, the bottom of the barrel (501) is connected with a sewage valve (506), the positioning end cover (505) is connected to the top of the barrel (501), the floating ball (502) is slidingly connected inside the barrel (501), and the diameter of the floating ball (502) is slightly smaller than the inner diameter of the barrel (501).

4. The water level monitoring and alarming device for the water collecting pool of the air compressor cooling tower according to claim 3, characterized in that: The liquid level rod (503) is vertically connected to the top end of the floating ball (502), the vertical distance from the bottom end of the floating ball (502) to the top end of the liquid level rod (503) is greater than the height of the barrel (501), the center position of the positioning end cover (505) is vertically connected with a circular hole, the diameter of the hole is slightly larger than the cross-sectional diameter of the liquid level rod (503), and the top of the liquid level rod (503) penetrates through the hole of the positioning end cover (505) and is slidingly connected with the positioning end cover (505).

5. The water level monitoring and alarming device for the water collecting pool of the air compressor cooling tower according to claim 3, characterized in that: The liquid level rod (503) is vertically connected with a connecting rod near the bottom, the connecting rod is slidingly connected on the vertical sliding groove and penetrates through the barrel (501), the vertical distance from the bottom end of the floating ball (502) to the bottom end of the connecting rod is equal to the vertical distance between the inner bottom of the main body of the water collecting pool (2) and the inner bottom of the bracket (6), and the end of the connecting rod is connected with an inductive iron block (504).

6. The water level monitoring and alarming device for the water collecting pool of the air compressor cooling tower according to claim 1, characterized in that: The inner side height of the bracket (6) is equal to the inner side height of the main body of the water collecting pool (2), and the bottom of the bracket (6) is located at the same horizontal position as the upper half of the water collecting pool (2).

7. The water level monitoring and alarming device for the water collecting pool of the air compressor cooling tower according to claim 1, characterized in that: The proximity switch (7) is a magnetic induction sensor, the signal receiving end of the proximity switch (7) is opposite to the vertical sliding groove of the barrel (501), the proximity switch (7) comprises a low liquid level switch (701) and an extremely low liquid level switch (702), the low liquid level switch (701) is connected to the inner side near the middle of the bracket (6), and the extremely low liquid level switch (702) is connected to the inner side near the bottom of the bracket (6).

8. The water level monitoring and alarming device for the water collecting pool of the air compressor cooling tower according to claim 1, characterized in that: The audible and visual alarm (8) is a rotating warning light, and the proximity switch (7) is connected with the audible and visual alarm (8) through an intermediate relay.

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