Automatic continuous blowdown device for condenser

Abstract

The utility model relates to the technical field of automatic blowdown, and discloses an automatic continuous blowdown device for a condenser, which comprises a gas-water separator, a blowdown tank, a liquid level meter, a blowdown valve and a control system, a gas outlet pipe is arranged on the side wall of the condenser, a first blowdown pipe is arranged at the bottom of the condenser, and the gas outlet pipe of the condenser is communicated with the side wall of the gas-water separator. A first blow-off pipe is arranged at the bottom of the gas-water separator, a second blow-off pipe is arranged at the bottom of the gas-water separator, the first blow-off pipe and the second blow-off pipe are both communicated with the side wall of the blow-off tank, a liquid level meter is arranged in the blow-off tank, a third blow-off pipe is arranged at the bottom of the blow-off tank, a blow-off valve is arranged on the third blow-off pipe, and the liquid level meter and the blow-off valve are both electrically The device has the advantages that condensate water in the condenser and the gas-water separator flows into the blow-down tank along the first blow-down pipe and the second blow-down pipe, the blow-down tank collects the condensate water in the condenser and the gas-water separator in real time, and continuous blow-down and water cutting can be achieved; and the automatic discharge of sewage is realized through the liquid level meter and the blow-down valve.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic sewage discharge, in particular to an automatic continuous sewage discharge device for a condenser. Background Art

[0002] During the operation of multiple condenser dehydration devices, the condensate must be completely drained according to the process operation requirements. Two manual drain valves are installed at the bottom of each condenser. Operators manually drain and cut off the drain valves of multiple condensers every hour. There are not only safety hazards caused by many uncertain human factors, but also process problems caused by the incompleteness of intermittent draining and cutting off of the device, and the retention of dirt and condensate in the equipment.

[0003] The Chinese utility model patent with the authorization announcement number CN2599278Y discloses an automatic drainage device for air compressors, wherein a first drainage ball valve is connected to the bottom of each air storage tank of the air compressor, and each first drainage ball valve is connected in series with a steel pipe; the steel pipe is connected in series with a first pipeline branch, and the first pipeline branch is composed of a second drainage ball valve and a solenoid valve connected in series, wherein a timer is connected to the solenoid valve to automatically control the discharge and closing of the accumulated water in the air storage tank of the air compressor at a fixed time, and the first pipeline branch is connected in parallel with a second pipeline branch, and the second pipeline branch is composed of at least a third drainage ball valve. The sewage in this application is discharged intermittently, and the technical effect of continuous sewage discharge cannot be achieved. Utility Model Content

[0004] The purpose of the utility model is to realize unmanned operation of sewage and water cutting, safe and controllable, continuous and unobstructed drainage, no condensed water accumulation in the condenser for a long time, thorough dehydration, and controlled process. In view of the above-mentioned shortcomings of the prior art, an automatic continuous sewage discharge device for the condenser is proposed.

[0005] A condenser automatic continuous sewage discharge device comprises an air-water separator, a sewage tank and a control system, wherein an air outlet is arranged on the side wall of the condenser, and a first sewage outlet is arranged on the bottom, the air outlet is connected with an air outlet pipe, the air outlet pipe is communicated with the air-water separator, the first sewage outlet is connected with a first sewage pipe, a second sewage outlet is arranged at the bottom of the air-water separator, the second sewage outlet is connected with a second sewage pipe, a water inlet is arranged on the side wall of the sewage tank, the first sewage pipe and the second sewage pipe are both communicated with the water inlet, a gas phase balance pipe is arranged on the top of the sewage tank, a first liquid level gauge is arranged on the sewage tank, a third sewage pipe is arranged at the bottom of the sewage tank, a sewage valve is arranged on the third sewage pipe, and the first liquid level gauge and the sewage valve are both electrically connected to the control system.

[0006] By adopting the above technical solution: The gas to be cooled is cooled in the condenser, and the water vapor contained in the gas condenses into water droplets in the condenser. The water droplets fall to the bottom of the condenser under the action of gravity; some small water droplets enter the gas-liquid separator along the outlet pipe with the cooling gas. The gas-liquid separator separates these small water droplets from the cooling gas, and the separated water droplets fall to the bottom of the gas-liquid separator; the bottom parts of the condenser and the gas-liquid separator are respectively provided with a first sewage discharge pipe and a second sewage discharge pipe, and the condensed water flows into the sewage tank along the first sewage discharge pipe and the second sewage discharge pipe. The sewage tank collects the condensed water in the condenser and the gas-liquid separator in real time, and continuous sewage discharge and water separation of the condenser and the gas-liquid separator can be realized.

[0007] There is a liquid level gauge in the sewage tank. A third sewage discharge pipe is provided at the bottom of the sewage tank, and a sewage discharge valve is provided on the third sewage discharge pipe. A high point and a low point are provided in the liquid level gauge. When the water level in the sewage tank is lower than the low point, the liquid level gauge transmits a signal to the control system, and the control system closes the sewage discharge valve, and the sewage tank collects the condensed water; when the water level in the sewage tank is higher than the high point, the control system opens the sewage discharge valve to discharge the condensed water in the sewage tank, realizing the automatic discharge of sewage in the condenser and the gas-liquid separator.

[0008] The above technical solution is further set as: There are multiple condensers, and the multiple condensers are connected in series through the outlet pipe. The condenser located at the last end along the gas flow direction is connected to the gas-liquid separator through the outlet pipe.

[0009] The above technical solution is further set as: The height of the first sewage discharge port and the second sewage discharge port is higher than that of the water inlet.

[0010] By adopting the above technical solution: The height of the first sewage discharge port and the second sewage discharge port is higher than that of the water inlet. Through this setting, the sewage in the condenser and the gas-liquid separator can automatically enter the sewage tank by the pressure difference.

[0011] The above technical solution is further set as: An inlet pipe is provided at the top of the condenser, the air pressure in the condenser is higher than the atmospheric pressure, and the inlet pipe is connected to the gas phase balance pipe.

[0012] By adopting the above technical solution: The sewage tank is connected to the condenser through the gas phase balance pipe, which can balance the air pressure in the sewage tank and the air pressure in the condenser. When the sewage flows into the sewage tank, the gas in the upper part of the sewage tank flows into the condenser along the gas phase balance pipe, so that the sewage in the condenser can flow into the sewage tank smoothly. At the same time, the sewage tank also plays a role of liquid seal, which can ensure that the gas in the condenser will not leak, and guarantee the safe production.

[0013] The above technical solution is further set as: A balance valve is provided on the gas phase balance pipe.

[0014] The above technical solution is further set as: The liquid level gauge is a remote transmission liquid level gauge.

[0015] The above technical solution is further configured as: the sewage discharge valve is an electric cut-off valve or a pneumatic cut-off valve.

[0016] The above technical solution is further configured as: two third manual valves are provided on the third sewage discharge pipe, and the two third manual valves are respectively located at both ends of the sewage discharge valve along the water flow direction.

[0017] By adopting the above technical solution: a field liquid level gauge is further provided on the outer wall of the sewage discharge tank.

[0018] The above technical solution is further configured as: the liquid level in the sewage discharge tank can be observed in real time through the field liquid level gauge.

[0019] The beneficial effects of the present utility model are:

[0020] 1. The gas to be cooled is cooled in the condenser, and the water vapor contained in the gas condenses into water droplets in the condenser. The water droplets fall to the bottom of the condenser under the action of gravity; part of the small water droplets enter the gas-liquid separator along with the cooling gas through the outlet pipe. The gas-liquid separator separates this part of the small water droplets from the cooling gas, and the separated water droplets fall to the bottom of the gas-liquid separator; a first sewage discharge pipe and a second sewage discharge pipe are respectively provided at the bottoms of the condenser and the gas-liquid separator. The condensed water flows into the sewage discharge tank along the first sewage discharge pipe and the second sewage discharge pipe. The sewage discharge tank collects the condensed water in the condenser and the gas-liquid separator in real time, and can realize continuous sewage discharge and water separation of the condenser and the gas-liquid separator.

[0021] A liquid level gauge is provided in the sewage discharge tank, and a third sewage discharge pipe is provided at the bottom of the sewage discharge tank. A sewage discharge valve is provided on the third sewage discharge pipe. A high point and a low point are provided in the liquid level gauge. When the water level in the sewage discharge tank is lower than the low point, the liquid level gauge transmits a signal to the control system, and the control system closes the sewage discharge valve, and the sewage discharge tank collects the condensed water; when the water level in the sewage discharge tank is higher than the high point, the control system opens the sewage discharge valve to discharge the condensed water in the sewage discharge tank, realizing automatic discharge of the sewage in the condenser and the gas-liquid separator.

[0022] 2. The sewage discharge tank is connected to the condenser through a gas phase balance pipe, which can balance the air pressure in the sewage discharge tank and the air pressure in the condenser. When the sewage flows into the sewage discharge tank, the gas in the upper part of the sewage discharge tank flows into the condenser along the gas phase balance pipe, so that the sewage in the condenser can flow smoothly into the sewage discharge tank. At the same time, the sewage discharge tank also plays a role of liquid seal, which can ensure that the gas in the condenser will not leak, and guarantees safe production. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the present utility model.

[0024] In the figure, 1 is a condenser; 101 is an intake pipe; 102 is an outlet pipe; 103 is a first sewage discharge port; 104 is a first sewage discharge pipe; 105 is a first manual valve; 106 is an air outlet; 2 is a gas-liquid separator; 201 is a second sewage discharge port; 202 is a second sewage discharge pipe; 203 is an exhaust pipe; 204 is a second manual valve; 3 is a sewage discharge tank; 301 is a water inlet; 302 is a collecting pipe; 303 is a third sewage discharge pipe; 304 is a gas-phase balance pipe; 305 is a balance valve; 306 is a third manual valve; 4 is a first liquid level gauge; 5 is a on-site liquid level gauge; 6 is a sewage discharge valve. Detailed implementation manners

[0025] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0026] Embodiment 1

[0027] An automatic continuous sewage discharge device for a condenser 1, as Figure 1 shown, includes a gas-liquid separator 2, a sewage discharge tank 3 and a control system. An intake pipe 101 is provided at the top of the condenser 1, an air outlet 106 is provided on the side wall, an outlet pipe 102 is connected to the air outlet 106, a first sewage discharge port 103 is provided at the bottom, and a first sewage discharge pipe 104 is connected to the first sewage discharge port 103. There are four condensers 1. The outlet pipes 102 of the condensers 1 are connected to the side wall of the gas-liquid separator 2. The four condensers 1 are divided into two groups, and each group of condensers 1 is connected in series with each other through the outlet pipe 102. The two condensers 1 close to the gas-liquid separator 2 are connected to the gas-liquid separator 2 through the outlet pipe 102. The gas containing low-temperature water vapor enters the condenser 1 from the intake pipe 101 for cooling, and the water vapor condenses into small water droplets in the condenser 1 and falls to the bottom of the condenser 1. The cooled gas carries some small water droplets into the gas-liquid separator 2. The gas-liquid separator 2 separates the water droplets and the cooled gas. The separated water droplets fall to the bottom of the gas-liquid separator 2, and the dry cooled gas is discharged from the exhaust pipe 203 at the top of the gas-liquid separator 2. A second sewage discharge port 201 is provided at the bottom of the gas-liquid separator 2, and a second sewage discharge pipe 202 is connected to the second sewage discharge port 201. A water inlet 301 is provided on the side wall of the sewage discharge tank 3, and a collecting pipe 302 is connected to the water inlet 301. The first sewage discharge pipe 104 and the second sewage discharge pipe 202 are both connected to the collecting pipe 302. The heights of the first sewage discharge port 103 and the second sewage discharge port 201 are both higher than the water inlet 301 of the sewage discharge tank 3. The sewage in the condenser 1 and the gas-liquid separator 2 flows into the sewage discharge tank 3 along the first sewage discharge pipe 104 and the second sewage discharge pipe 202 under the action of the pressure difference.

[0028] As Figure 1As shown in the figure, a first liquid level gauge 4 is provided inside the sewage discharge tank 3, a field liquid level gauge 5 is provided on the outer wall of the sewage discharge tank 3, a third sewage discharge pipe 303 is provided at the bottom of the sewage discharge tank 3, and a sewage discharge valve 6 is provided on the third sewage discharge pipe 303. The sewage discharge valve 6 is a pneumatic cut-off valve. The first liquid level gauge 4 and the sewage discharge valve 6 are both electrically connected to the control system. The liquid level gauge is provided with a high point and a low point. When the water level in the sewage discharge tank 3 is lower than the low point, the liquid level gauge transmits a signal to the control system, and the control system closes the sewage discharge valve 6, and the sewage discharge tank 3 collects condensed water; when the water level in the sewage discharge tank 3 is higher than the high point, the control system opens the sewage discharge valve 6 to discharge the condensed water in the sewage discharge tank 3, realizing the automatic discharge of sewage in the condenser 1 and the gas-water separator 2.

[0029] Embodiment 2

[0030] As Figure 1 shown in the figure, the air pressure inside the condenser 1 is higher than the atmospheric pressure. An air inlet pipe 101 is provided at the top of the condenser 1, and a gas phase balance pipe 304 is provided at the top of the sewage discharge tank 3. The gas phase balance pipe 304 is connected to the air inlet pipe 101, and a balance valve 305 is provided on the gas phase balance pipe 304. The gas phase balance pipe 304 can balance the air pressure inside the sewage discharge tank 3 and the air pressure inside the condenser 1. When sewage flows into the sewage discharge tank 3, the gas in the upper part of the sewage discharge tank 3 flows into the condenser 1 along the gas phase balance pipe 304, so that the sewage inside the condenser 1 can flow smoothly into the sewage discharge tank 3. At the same time, the sewage discharge tank 3 also plays a role of liquid seal, which can ensure that the gas inside the condenser 1 will not leak, ensuring safe production.

[0031] Embodiment 3

[0032] As Figure 1 shown in the figure, two first manual valves 105 are provided on the first sewage discharge pipe 104 along the water flow direction, a second manual valve 204 is provided on the second sewage discharge pipe 202, and two third manual valves 306 are provided on the third sewage discharge pipe 303. The two third manual valves 306 are respectively located at both ends of the sewage discharge valve 6 along the water flow direction. When the sewage discharge device is operating, the first manual valve 105, the second manual valve 204 and the third manual valve 306 are kept open. When overhauling, the first manual valve 105, the second manual valve 204 and the third manual valve 306 can be closed to overhaul the sewage discharge device.

[0033] For the parts not involved above, the prior art is applicable.

[0034] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration purposes and not for limiting the scope of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the direction of the present utility model or exceed the scope defined by the appended claims. Those skilled in the art should understand that any modifications, equivalent substitutions, improvements, etc. made to the above embodiments based on the technical essence of the present utility model should all be included within the protection scope of the present utility model.

Claims

1. A condenser automatic continuous sewage discharge device, characterized in that: The condenser (1) comprises a gas-water separator (2), a sewage tank (3) and a control system. The condenser (1) is provided with a gas outlet (106) on the side wall and a first sewage outlet (103) at the bottom. The gas outlet (106) is connected to a gas outlet pipe (102). The gas outlet pipe (102) is in communication with the gas-water separator (2). The first sewage outlet (103) is connected to a first sewage outlet pipe (104). The gas-water separator (2) is provided with a second sewage outlet (201) at the bottom. The second sewage outlet (201) is connected to a second sewage outlet pipe ( 202), a water inlet (301) is provided on the side wall of the sewage tank (3), the first sewage pipe (104) and the second sewage pipe (202) are both connected to the water inlet (301), a gas phase balance pipe (304) is provided on the top of the sewage tank (3), a first liquid level gauge (4) is provided on the sewage tank (3), a third sewage pipe (303) is provided on the bottom of the sewage tank (3), a sewage valve (6) is provided on the third sewage pipe (303), and the first liquid level gauge (4) and the sewage valve (6) are both electrically connected to a control system.

2. The automatic continuous sewage discharge device for condensers according to claim 1 is characterized in that: A plurality of the condensers (1) are provided, and the plurality of the condensers (1) are connected in series via an air outlet pipe (102); the condenser (1) located at the rear end along the air flow direction is connected to the air-water separator (2) via the air outlet pipe (102).

3. The automatic continuous sewage discharge device for condensers according to claim 1 is characterized in that: The first sewage outlet (103) and the second sewage outlet (201) are higher than the water inlet (301).

4. The automatic continuous sewage discharge device for condensers according to claim 3 is characterized in that: An air inlet pipe (101) is provided at the top of the condenser (1); the air pressure in the condenser (1) is higher than the atmospheric pressure; and the air inlet pipe (101) is connected to a gas phase balance pipe (304).

5. The automatic continuous sewage discharge device for condensers according to claim 4 is characterized in that: The gas phase balancing pipe (304) is provided with a balancing valve (305).

6. The automatic continuous sewage discharge device for condensers according to claim 1 is characterized in that: The first liquid level meter (4) is a remote liquid level meter.

7. The automatic continuous sewage discharge device for condensers according to claim 1 is characterized in that: The drain valve (6) is an electric shut-off valve or a pneumatic shut-off valve.

8. The condenser automatic continuous sewage discharge device according to claim 1, characterized in that: The third sewage pipe (303) is provided with two third manual valves (306), and the two third manual valves (306) are respectively located at two ends of the sewage valve (6) along the water flow direction.

9. The automatic continuous sewage discharge device for condensers according to claim 1, characterized in that: The outer wall of the sewage tank (3) is also provided with an on-site liquid level meter (5).

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