Water-saving type automatic water replenishing system based on double balanced water tanks

Abstract

The utility model belongs to the technical field of coke oven riser pipe cover water seal, and discloses a water-saving type automatic water replenishing system based on double balanced water tanks. Mainly on the basis of an existing double-balance water tank water supplementing system, a first water tank of a support is used for lifting, meanwhile, one end of a steel wire rope is connected with a balance floating ball, the other end of the steel wire rope sequentially winds around a first pulley and a second pulley and is connected with a fixing ring, and the fixing ring is connected with a plug valve block through a connecting rod. The blocking valve is located in a valve groove in the water outlet in the first water tank and automatically opens or closes the water outlet through the change of the water level in the second water tank, meanwhile, liquid level meters are installed on the first water tank and the second water tank, liquid level signal interlocking control is formed by the liquid level meters and a field DCS control system, and automatic water supplementing is achieved. Therefore, water resource waste caused by an original long-flowing-water-state water supplementing mode is avoided, waste water generated in the supplementing process is reduced, the waste water treatment burden is relieved, and wide application prospects are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water seals for coke oven riser covers, and in particular relates to a water-saving automatic water replenishment system based on double-balanced water tanks. Background Art

[0002] In the coking industry, the riser and bridge pipe are the main export equipment for the raw gas from the coke oven. The riser is directly connected to the carbonization chamber, and the bridge pipe is connected to the gas collecting pipe. During the entire coking process, the high-temperature gas generated by the cooked coke passes through the riser to the bridge pipe, and enters the gas collecting pipe after being sprayed with circulating ammonia water in the bridge pipe for cooling. The gas on the top of the gas collecting pipe is sent to the chemical production workshop for purification through a pipeline. At present, the coke oven riser cover and the bridge pipe socket adopt a water seal structure. The water seal mainly controls the amount of water added and the amount of evaporation to achieve a balance to ensure that there is an appropriate amount of water in the water seal, so as to achieve a sealing effect and prevent the overflow of raw gas from polluting the atmospheric environment.

[0003] At present, our company mainly controls the liquid level of the water seal cover of the riser through the balance water tanks at both ends of the riser platform to adopt a long-flow state. In daily production, the water seal cover actually uses less water, so the excess water flows out through the overflow pipe, causing a waste of water resources. This not only leads to a waste of water resources, but also increases the burden of wastewater treatment.

[0004] As the coking industry's requirements for environmental protection and energy conservation continue to increase, how to simplify the water replenishment system based on the double balanced water tank and make necessary improvements to the riser and bridge pipe water seal technology has become an important trend in the industry's development. At the same time, it also makes greater contributions to the green and low-carbon transformation of enterprises. Utility Model Content

[0005] In view of the problem of water waste in the process of water seal replenishment of the existing double balanced water tank in the background technology, and the increase in the burden of wastewater treatment, our company has modified the existing double balanced water tank replenishment system, and automatically controlled the water replenishment of the water seal pipe through water level changes. Based on this, the utility model provides a water-saving automatic water replenishment system based on a double balanced water tank.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a water-saving automatic water replenishment system based on a double balanced water tank, comprising a water seal pipe and a platform, on which a No. 1 water tank and a No. 2 water tank are respectively arranged, the water filling port of the No. 1 water tank is connected to the industrial water mother pipe through a water filling pipe, a first water filling pump is arranged on the water filling pipe, the first water filling pump regularly replenishes water for the No. 1 water tank, the water outlet of the No. 1 water tank is connected to the inlet of the water seal pipe through the water filling pipe, the overflow port of the water seal pipe is connected to the water inlet of the No. 2 water tank through the overflow pipe, the sewage outlet of the No. 2 water tank is connected to the sewage pool through the sewage pipe, and sewage discharge ports are respectively arranged on the sewage pipe. Pump, manual shut-off valve, the No. 1 water tank is placed on the platform through a bracket, a first pulley is installed on the No. 1 water tank through an L-shaped plate, a second pulley is arranged on the No. 2 water tank, one end of the wire rope is connected with the balancing float, the balancing float is arranged in the No. 2 water tank, the other end of the wire rope passes around the first pulley and the second pulley in sequence and is connected with a fixed ring, the fixed ring is connected with the blocking valve block through a connecting rod, a valve slot is arranged at the water outlet inside the No. 1 water tank, the blocking valve block is located in the valve slot, the blocking valve block automatically opens or closes the water outlet by using the water level change in the No. 2 water tank, so as to realize automatic water replenishment of the water seal pipe.

[0007] As a further supplement to the above technical solution, a reflux port is provided on the No. 2 water tank, and the reflux port is located between the water inlet and the sewage outlet, and is connected to the water injection pipe through a balancing control pipe using a pneumatic three-way valve, and the pneumatic three-way valve is located on the water inlet side of the first water injection pump.

[0008] As a further supplement to the above technical solution, a first liquid level gauge is arranged on the two first instrument interfaces of the No. 1 water tank. The first liquid level gauge, the first water injection pump, and the pneumatic three-way valve form a liquid level signal interlocking control through the on-site DCS control system to realize automatic water replenishment of the No. 1 water tank.

[0009] As a further supplement to the above technical solution, a second liquid level gauge is arranged on the two second instrument interfaces of the No. 2 water tank. The second liquid level gauge forms a liquid level signal interlocking control with the first water injection pump and the pneumatic three-way valve through the on-site DCS control system, and is used to adjust the liquid level changes in the No. 2 water tank to realize automatic water replenishment of the water seal pipe.

[0010] As a further supplement to the above technical solution, a bypass connected in parallel with the first water injection pump is arranged on the water injection pipe, a second water injection pump is arranged on the bypass, a first manual control valve is arranged on both sides of the inlet and outlet of the first water injection pump, a second manual control valve is arranged on both sides of the inlet and outlet of the second water injection pump, and a flow transmitter is arranged on the water injection pipe. The flow transmitter forms a flow signal interlocking control with the first water injection pump and the second water injection pump through the on-site DCS control system, so as to ensure the normal operation of the entire water injection system.

[0011] As a further supplement to the above technical solution, a first check valve is arranged on the water injection pipe. The first check valve is located between the pneumatic three-way valve and the industrial water main pipe. The first check valve is used to prevent the water in the No. 2 water tank from overflowing back into the industrial water main pipe when the pneumatic three-way valve is damaged.

[0012] As a further supplement to the above technical solution, a second check valve is provided on the reflux port of the balancing control pipe, and the second check valve is used to prevent the water in the No. 1 water tank from flowing back to the No. 2 water tank when the pneumatic three-way valve is damaged.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model uses a bracket to raise the No. 1 water tank, and installs a first pulley on the No. 1 water tank through an L-shaped plate, and a second pulley is set on the No. 2 water tank. One end of the wire rope is connected to the balancing float, and the other end of the wire rope passes around the first pulley and the second pulley in turn and is connected to the fixed ring, wherein the fixed ring is connected to the plugging valve fast through a connecting rod, and the plugging valve fast is located in the valve groove at the water outlet inside the No. 1 water tank, and the water level change in the No. 2 water tank is used to automatically open or close the water outlet, so as to realize automatic water replenishment of the water seal pipe. Therefore, the utility model can realize accurate water replenishment of the No. 1 and No. 2 water tanks to the water seal pipe through the steel wire rope linkage balancing float and plugging valve fast, avoid the waste of water resources formed by the original long-flow water replenishment method, and reduce the generation of wastewater during the replenishment process, reducing the burden of wastewater treatment.

[0015] 2. The utility model sets a reflux port and a balance control pipe on the No. 2 water tank, combined with a pneumatic three-way valve, to recycle the water overflowing from the water seal pipe. After natural clarification, the water can be pumped back to the No. 1 water tank, realizing the secondary utilization of wastewater and further saving water resources.

[0016] 3. The utility model is equipped with the first and second liquid level gauges, combined with the on-site DCS control system, to achieve real-time monitoring and automatic water replenishment of the liquid levels of the No. 1 and No. 2 water tanks. This automated and intelligent management method not only improves the water replenishment efficiency, but also greatly reduces the labor intensity of manual operation.

[0017] 4. The bypass and second water injection pump design on the water injection pipe of the utility model provide backup equipment for the water replenishment system and increase the reliability of the system. At the same time, the flow transmitter and the flow signal interlocking control of the two water injection pumps ensure the stable operation of the water injection system.

[0018] 5. The utility model effectively prevents the backflow phenomenon caused by the failure of the pneumatic three-way valve by arranging check valves on the water injection pipe and the balance control pipe, thereby ensuring the normal operation of the entire water supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the water-saving automatic water replenishment system of the double balanced water tank in the utility model;

[0020] Figure 2 This is a structural diagram of the water seal pipe in the utility model;

[0021] Figure 3 This is a structural diagram of the No. 1 water tank in the utility model;

[0022] Figure 4 This is a structural diagram of the No. 2 water tank in the utility model;

[0023] Figure 5 It is a schematic diagram of the water-saving automatic water replenishment system of the double balanced water tank in the utility model.

[0024] In the figure: the water seal pipe is 1, the platform is 2, the No. 1 water tank is 3, the No. 2 water tank is 4, the water supply pipe is 5, the overflow pipe is 6, the bracket is 7, the industrial jellyfish pipe 8, the L-shaped plate is 9, the first pulley is 10, the second pulley is 11, the wire rope is 12, the fixing ring is 13, the plugging valve is 15, the balancing float is 16, the first liquid level gauge is 17, the second liquid level gauge is 18, the water injection pipe is 19, the first water injection pump is 20, the sewage pipe is 23, the sewage pump is 24, the manual shut-off valve is 25, the flow transmitter is 26, the bypass is 27, the second water injection pump is 28, the first manual control valve is 29, the second manual control valve is 30, the first check valve is 31, and the second check valve is 32.

[0025] Among them, water seal pipe: inlet 101, overflow port 102; water tank No. 1: water inlet is 301, water outlet is 302, valve slot is 303, and the first instrument interface is 304; water tank No. 2: water inlet is 401, sewage outlet is 402, return port is 403, and the second instrument interface is 404. DETAILED DESCRIPTION

[0026] In order to further illustrate the technical solution of the utility model, the following Figures 1 to 5,According to the implementation process of this water-saving project transformation, we further illustrate the utility model through five embodiments. Embodiment 1

[0027] As attached Figures 1 to 5 As shown, a water-saving automatic water replenishment system based on a double balanced water tank includes a water seal pipe 1 and a platform 2, on which a No. 1 water tank 3 and a No. 2 water tank 4 are respectively arranged, and the water injection port 301 of the No. 1 water tank 3 is connected to the industrial water mother pipe 8 through a water injection pipe 19, and a first water injection pump 20 is arranged on the water injection pipe 19, and the first water injection pump 20 regularly replenishes water for the No. 1 water tank 3, and the water outlet 302 of the No. 1 water tank 3 is connected to the inlet 101 of the water seal pipe 1 through a water replenishment pipe 5, and the overflow port 102 of the water seal pipe 1 is connected to the water inlet 401 of the No. 2 water tank 4 through an overflow pipe 6, and the sewage outlet 402 of the No. 2 water tank 4 is connected to the sewage pool through a sewage pipe 23, and a sewage pump 24 and a manual shut-off valve 25 are respectively arranged on the sewage pipe 23. The No. 1 water tank 3 is placed on the platform 2 through a bracket 7. A first pulley 10 is installed on the No. 1 water tank 3 through an L-shaped plate 9. A second pulley 11 is arranged on the No. 2 water tank 4. One end of the wire rope 12 is connected to the balancing float 16. The balancing float 16 is arranged in the No. 2 water tank 4. The other end of the wire rope 12 passes around the first pulley 10 and the second pulley 11 in sequence and is connected to the fixed ring 13. The fixed ring 13 is connected to the blocking valve 15 through a connecting rod 14. A valve slot 303 is arranged at the water outlet 302 inside the No. 1 water tank 3. The blocking valve 15 is located in the valve slot 303. The blocking valve 15 automatically opens or closes the water outlet 302 by using the water level change in the No. 2 water tank 4, thereby realizing automatic water replenishment of the water seal pipe 1. Embodiment 2

[0028] In order to reduce the generation of sewage in the entire water replenishment system, thereby reducing the burden of sewage treatment, and at the same time enable the overflow water to be further reused. Figure 4 and 5 As shown, we add the following implementation scheme: a reflux port 403 is provided on the No. 2 water tank 4, and the reflux port 403 is located between the water inlet 401 and the sewage outlet 402, and is connected to the water injection pipe 19 via a balance control pipe 21 using a pneumatic three-way valve 22, and the pneumatic three-way valve 22 is located on the water inlet side of the first water injection pump 20. Embodiment 3

[0029] In order to realize automatic control of the entire water replenishment system and reduce the labor intensity of on-site personnel, we installed liquid level gauges on water tank No. 1 and water tank No. 2 respectively, and used the on-site DCS control system to form a liquid level signal interlocking control with the first water injection pump and pneumatic three-way valve, thereby realizing automatic control.

[0030] As attached Figures 3 to 5 As shown, the automation transformation scheme is as follows: (i) A first liquid level gauge 17 is provided on the two first instrument interfaces 304 of the No. 1 water tank 3. The first liquid level gauge 17 forms a liquid level signal interlocking control with the first water injection pump 20 and the pneumatic three-way valve 22 through the on-site DCS control system to realize automatic water replenishment of the No. 1 water tank 3. (ii) A second liquid level gauge 18 is provided on the two second instrument interfaces 404 of the No. 2 water tank 4. The second liquid level gauge 18 forms a liquid level signal interlocking control with the first water injection pump 20 and the pneumatic three-way valve 22 through the on-site DCS control system to adjust the liquid level change in the No. 2 water tank 4 to realize automatic water replenishment of the water seal pipe 1. Embodiment 4

[0031] In order to prevent the failure of the first water injection pump and affect the normal operation of the entire water injection and replenishment, we have added a bypass and backup pump solution. Figure 5 As shown, the specific implementation method is as follows: a bypass 27 connected in parallel with the first water injection pump 20 is arranged on the water injection pipe 19, a second water injection pump 28 is arranged on the bypass 27, a first manual control valve 29 is arranged on both sides of the inlet and outlet of the first water injection pump 20, and a second manual control valve 30 is arranged on both sides of the inlet and outlet of the second water injection pump 28, and a flow transmitter 26 is arranged on the water injection pipe 19. The flow transmitter 26 forms a flow signal interlocking control with the first water injection pump 20 and the second water injection pump 28 through the on-site DCS control system, so as to ensure the normal operation of the entire water injection system. Embodiment 5

[0032] As attached Figure 5 As shown in the figure, in order to ensure the normal and safe operation of the water-saving automatic water replenishment system of the double balanced water tank, we add two check valves in the key parts of the whole system. Figure 5 As shown, firstly, a first check valve 31 is provided on the water injection pipe 19, and the first check valve 31 is located between the pneumatic three-way valve 22 and the industrial water main pipe 8, and is used to prevent the water in the No. 2 water tank 4 from overflowing back to the industrial water main pipe 8 when the pneumatic three-way valve 22 is damaged. Secondly, a second check valve 32 is provided on the reflux port 403 of the balance control pipe 21, and the second check valve 32 is used to prevent the water in the No. 1 water tank 3 from flowing back to the No. 2 water tank 4 when the pneumatic three-way valve 22 is damaged.

[0033] 1. Automatic water filling process of water seal pipe: When water needs to be filled in the water seal pipe, the on-site DCS control system switches the pneumatic three-way valve 22 to connect the pipeline between the No. 1 water tank 3 and the No. 2 water tank 4, and starts the first water injection pump 20 at the same time, and the overflow water in the No. 2 water tank 4 is pumped into the No. 1 water tank 3; when the water level drops to the set value, the on-site DCS control system switches the pneumatic three-way valve 22 to cut off the balance control pipe 21, and stops the operation of the first water injection pump 20. As the water level in the No. 2 water tank 4 drops, the balance float 1 6 also descends together, and the plugging valve 15 is pulled by the wire rope 12 to open the water outlet 302. At this time, the water in the No. 1 water tank 3 enters through the water replenishing pipe 5; when the water level in the water seal pipe 1 reaches the water seal requirement, continued water replenishment will enter the No. 2 water tank 4 through the overflow pipe 6. As the water level in the No. 2 water tank 4 rises, the balancing float 16 also rises, gradually offsetting the original traction force. At this time, the plugging valve 15 falls under its gravity and blocks the water outlet 302, thereby completing the automatic water replenishment operation of the water seal pipe.

[0034] 2. Automatic water replenishment process of water tank No. 1: When the water level in water tank No. 1 3 drops to the low water level line, the on-site DCS control system switches the pneumatic three-way valve 22 to connect the pipeline between water tank No. 1 3 and the industrial water main pipe 8, and starts the first water injection pump 20 at the same time, and the industrial water will be pumped into water tank No. 1 3. With continuous water injection, when the water level in water tank No. 1 3 reaches the high water level line, the on-site DCS control system switches the pneumatic three-way valve 22 to cut off the water injection pipeline and stops the operation of the first water injection pump 20, thereby completing the automatic water replenishment operation of water tank No. 1.

[0035] During the above-mentioned water replenishment operation, the on-site DCS control system detects the flow signal during the water replenishment process based on the flow transmitter 26, and determines whether the first water injection pump 20 fails. Once an abnormal situation occurs, the first manual control valve 29 is closed and the second manual control valve 30 is opened, and the second water injection pump 28 is started at the same time to replace the first water injection pump 20 to maintain the normal operation of the system.

[0036] The above shows and describes the main features and advantages of the utility model. For those skilled in the art, it is obvious that the specific implementation of the utility model is not limited to the details of the above exemplary embodiments, and the creative ideas and design ideas of the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model, which should be equivalent to the protection scope disclosed in the technical solution of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A water-saving automatic water replenishment system based on a double balanced water tank, comprising a water seal pipe (1) and a platform (2), wherein a first water tank (3) and a second water tank (4) are respectively arranged on the platform (2), and a water injection port (301) of the first water tank (3) is connected to an industrial water main pipe (8) via a water injection pipe (19), and a first water injection pump (20) is arranged on the water injection pipe (19), and the first water injection pump (20) regularly replenishes water for the first water tank (3). The water outlet (302) of the tank (3) is connected to the inlet (101) of the water seal pipe (1) through a water supply pipe (5); the overflow port (102) of the water seal pipe (1) is connected to the water inlet (401) of the second water tank (4) through an overflow pipe (6); the sewage outlet (402) of the second water tank (4) is connected to the sewage pool through a sewage pipe (23); a sewage pump (24) and a manual shut-off valve (25) are respectively provided on the sewage pipe (23); the invention is characterized in that: The first water tank (3) is placed on the platform (2) via a bracket (7); a first pulley (10) is installed on the first water tank (3) via an L-shaped plate (9); a second pulley (11) is arranged on the second water tank (4); one end of a steel wire rope (12) is connected to a balancing float (16); the balancing float (16) is arranged in the second water tank (4); the other end of the steel wire rope (12) is passed through the first pulley (10), the second pulley (11), and the balance float (16) in sequence. The wheel (11) is connected to a fixing ring (13); the fixing ring (13) is connected to a blocking valve block (15) via a connecting rod (14); a valve slot (303) is provided at the water outlet (302) inside the No. 1 water tank (3); the blocking valve block (15) is located in the valve slot (303); the blocking valve block (15) automatically opens or closes the water outlet (302) by utilizing the water level change in the No. 2 water tank (4), thereby realizing automatic water replenishment to the water seal pipe (1).

2. According to claim 1, a water-saving automatic water replenishment system based on a double balanced water tank is characterized in that: The second water tank (4) is provided with a reflux port (403), which is located between the water inlet (401) and the sewage outlet (402), and is connected to the water injection pipe (19) via a balance control pipe (21) and a pneumatic three-way valve (22), wherein the pneumatic three-way valve (22) is located on the water inlet side of the first water injection pump (20).

3. According to claim 2, a water-saving automatic water replenishment system based on a double balanced water tank is characterized in that: A first liquid level gauge (17) is provided on the two first instrument interfaces (304) of the first water tank (3); the first liquid level gauge (17) forms a liquid level signal interlocking control with the first water injection pump (20) and the pneumatic three-way valve (22) through an on-site DCS control system, thereby realizing automatic water replenishment of the first water tank (3).

4. According to claim 3, a water-saving automatic water replenishment system based on a double balanced water tank is characterized in that: A second liquid level gauge (18) is provided on the two second instrument interfaces (404) of the No. 2 water tank (4). The second liquid level gauge (18) is respectively connected to the first water injection pump (20) and the pneumatic three-way valve (22) through an on-site DCS control system to form a liquid level signal interlocking control, and is used to adjust the liquid level change in the No. 2 water tank (4) to achieve automatic water replenishment of the water seal pipe (1).

5. A water-saving automatic water replenishment system based on a double balanced water tank according to any one of claims 2 to 4, characterized in that: A bypass (27) connected in parallel with the first water injection pump (20) is arranged on the water injection pipe (19); a second water injection pump (28) is arranged on the bypass (27); first manual control valves (29) are respectively arranged on both sides of the water inlet and outlet of the first water injection pump (20); second manual control valves (30) are respectively arranged on both sides of the water inlet and outlet of the second water injection pump (28); a flow transmitter (26) is arranged on the water injection pipe (19); the flow transmitter (26) forms flow signal interlocking control with the first water injection pump (20) and the second water injection pump (28) through an on-site DCS control system, thereby ensuring the normal operation of the entire water injection system.

6. The water-saving automatic water replenishment system based on double balanced water tanks according to claim 5 is characterized in that: A first check valve (31) is provided on the water injection pipe (19). The first check valve (31) is located between the pneumatic three-way valve (22) and the industrial water main pipe (8). The first check valve (31) is used to prevent the water in the No. 2 water tank (4) from overflowing back into the industrial water main pipe (8) when the pneumatic three-way valve (22) is damaged.

7. The water-saving automatic water replenishment system based on double balanced water tanks according to claim 6 is characterized in that: A second check valve (32) is provided on the return port (403) of the balancing control pipe (21), and the second check valve (32) is used to prevent the water in the No. 1 water tank (3) from flowing back into the No. 2 water tank (4) when the pneumatic three-way valve (22) is damaged.

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