Condensate water recovery device based on redundancy technology

Abstract

The utility model relates to the technical field of condensate water recovery, in particular to a condensate water recovery device based on redundancy technology, which comprises a storage tank used for storing condensate water; a liquid inlet of the first draining pump is connected with the storage tank, and the first draining pump can drain water in the storage tank; a liquid inlet of the second draining pump is connected with the storage tank, and the second draining pump can drain water in the storage tank; the first drainage pump and the second drainage pump are electrically connected to the control system, and the control system can control the on-off state of the first drainage pump and the on-off state of the second drainage pump. The beneficial effects of the utility model are that through the redundancy design of the control system, when electronic components in the first control module break down, the second control module can rapidly switch, thereby ensuring the continuous and stable operation of the condensed water recovery device, and avoiding the work interruption caused by the damage of key components, thereby reducing the economic loss of enterprises and improving the reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to condensate water recovery technical field especially relates to a condensate water recovery device based on redundancy technique. BACKGROUND

[0002] Steam as the key energy carrier in chemical production, the condensate water formed after completing heat exchange has the characteristics of high temperature, high heat and high purity. If directly discharged, not only causes energy waste and water resource loss, more and with green low carbon production concept is contrary. Therefore, condensate water recovery device is one of the core equipment of energy saving and emission reduction in chemical field.

[0003] However, the existing condensate water recovery device has significant defects in electrical system design: (1) all electrical components (including control module, sensor, actuator, etc.) are integrated in a single explosion-proof distribution box, lack of redundancy backup. Any element failure will directly lead to system downtime, and cannot be replaced online. (2) Chemical production needs 24 hours continuous operation, and the existing system must be powered off when the element is repaired, causing production interruption and significant economic loss. (3) In complex production conditions (such as condensate water flow fluctuation, corrosive environment), electrical components are more prone to damage, further amplifying system vulnerability.

[0004] The current technology has not effectively solved the above problems, and there is an urgent need for a condensate water recovery device system with high reliability and online maintenance to ensure the continuity and economy of chemical production. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problems existing in the prior art, and provides a condensate water recovery device based on redundancy technique.

[0006] The utility model is implemented by the following technical solutions:

[0007] A condensate water recovery device based on redundancy technique, the condensate water recovery device comprises:

[0008] A storage tank for storing condensate water;

[0009] A first drainage pump with its inlet connected to the storage tank, capable of draining water in the storage tank;

[0010] A second drainage pump with its inlet connected to the storage tank, capable of draining water in the storage tank;

[0011] A control system, the first drainage pump and the second drainage pump are electrically connected to the control system, and the control system can control the on-off state of the first drainage pump and the on-off state of the second drainage pump.

[0012] Further, the control system comprises:

[0013] a power supply;

[0014] a first control module, the power supply, the first drain pump and the second drain pump are electrically connected to the first control module, the first control module can make the power supply supply power to one of the first drain pump and the second drain pump;

[0015] a second control module, the power supply, the first drain pump and the second drain pump are electrically connected to the second control module, the second control module can make the power supply supply power to one of the first drain pump and the second drain pump.

[0016] Further, the first control module comprises circuit breakers QF1, QF5 and QF6, and contactors KM101 and KM102;

[0017] The power supply, the circuit breaker QF1, the contactor KM101, the circuit breaker QF5 and the first drain pump are connected in series;

[0018] The power supply, the circuit breaker QF1, the contactor KM102, the circuit breaker QF6 and the second drain pump are connected in series.

[0019] Further, the first control module further comprises a thermal relay KH101, the KH101 is connected in series between the contactor KM101 and the circuit breaker QF5; and / or

[0020] The first control module further comprises a thermal relay KH102, the KH102 is connected in series between the contactor KM102 and the circuit breaker QF6.

[0021] Further, the second control module comprises circuit breakers QF, QF1', QF2', QF3 and QF4, and contactors KM103 and KM104;

[0022] The power supply, the circuit breaker QF, QF1', the contactor KM103, the circuit breaker QF3 and the first drain pump are connected in series;

[0023] The power supply, the circuit breaker QF, QF2', the contactor KM104, the circuit breaker QF5 and the second drain pump are connected in series;

[0024] When one of the circuit breakers QF3 and QF5 is closed, the other is opened;

[0025] When one of the circuit breakers QF4 and QF6 is closed, the other is opened.

[0026] Further, the second control module further comprises a thermal relay KH103, which is connected in series between the contactor KM103 and the circuit breaker QF3; and / or

[0027] The first control module further comprises a thermal relay KH104, which is connected in series between the contactor KM104 and the circuit breaker QF4.

[0028] Further, the control system further comprises a liquid level detection member and a control unit, the liquid level detection member being capable of detecting the liquid level of the storage tank, the liquid level detection member, the first drainage pump and the second drainage pump being electrically connected to the control unit, the control unit being capable of controlling the on-off state of the first drainage pump and the on-off state of the second drainage pump according to the liquid level.

[0029] The utility model discloses the beneficial effects are:

[0030] The utility model discloses the beneficial effects are: BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the circuit principle drawing of the first control module in prior art;

[0032] Figure 2 It is the circuit principle drawing of the first control module and the second control module of the utility model;

[0033] Figure 3 It is the control panel of the second control module of the utility model;

[0034] Figure 4 It is the real object picture of the second control module of the utility model. DETAILED DESCRIPTION

[0035] In order to make the technical personnel in the art of the present utility model better understand the technical scheme of the present utility model, the present utility model will be further described in detail below in combination with the drawings and the best embodiment. Based on the embodiment in the present utility model, all other embodiments obtained by the ordinary technical personnel in the art without making creative labor belong to the scope of protection of the present utility model.

[0036] The utility model provides a kind of condensate water recovery device based on redundancy technique, which includes storage tank, first drainage pump, second drainage pump and control system.

[0037] Storage tank is used to store condensate water.The liquid inlet of first drainage pump is connected to storage tank, and the liquid inlet of second drainage pump is also connected to storage tank. When one of first drainage pump and second drainage pump is started, the condensate water in storage tank can be discharged. The present device can turn on first drainage pump and second drainage pump alternately.

[0038] Control system is used to control the on-off state of first drainage pump and the on-off state of second drainage pump. Control system includes power supply, first control module, second control module, liquid level detection piece and control unit. Power supply is used to supply power to first drainage pump and second drainage pump.

[0039] Liquid level detection piece can detect the liquid level of storage tank. Power supply, liquid level detection piece, first drainage pump and second drainage pump are all electrically connected to control unit. Control unit can control the on-off state of first drainage pump and the on-off state of second drainage pump according to the liquid level of storage tank. Specifically, when liquid level detection piece detects that the liquid level of storage tank reaches preset liquid level for the first time, control unit starts first drainage pump to discharge the water in storage tank, and then closes first drainage pump; when liquid level detection piece detects that the liquid level of storage tank reaches preset liquid level for the second time, control unit starts second drainage pump to discharge the water in storage tank, and then closes second drainage pump. This setting mode can make condensate water recovery device run automatically.

[0040] First control module includes circuit breaker QF1, QF5 and QF6, contactor KM101 and KM102, thermal relay KH101 and KH102. Power supply, circuit breaker QF1, contactor KM101, thermal relay KH101, circuit breaker QF5 and first drainage pump are connected in series. Power supply, circuit breaker QF1, contactor KM102, thermal relay KH102, circuit breaker QF6 and second drainage pump are connected in series. When circuit breaker QF1, QF5 and QF6 are closed, first control module is in standby state. Then, closing contactor KM101 can make power supply connect first drainage pump to start first drainage pump. Closing contactor KM102 can make power supply connect second drainage pump to start second drainage pump. First control module is suitable for manually controlling first drainage pump and second drainage pump. Further, first control module can be set as explosion-proof distribution box.

[0041] The second control module comprises circuit breakers QF, QF1', QF2', QF3 and QF4, contactors KM103 and KM104, and thermal relays KH103 and KH104. The power supply, the circuit breaker QF, the circuit breaker QF1', the contactor KM103, the thermal relay KH103, the circuit breaker QF3 and the first drainage pump are connected in series. The power supply, the circuit breaker QF, the circuit breaker QF2', the contactor KM104, the thermal relay KH104, the circuit breaker QF5 and the second drainage pump are connected in series. When the circuit breakers QF, QF1', QF2', QF3 and QF4 are closed, the second control module is in a standby state. Then, the contactor KM103 is closed to connect the power supply to the first drainage pump to start the first drainage pump. The contactor KM104 is closed to connect the power supply to the second drainage pump to start the second drainage pump. The second control module is also applicable to manually control the first drainage pump and the second drainage pump. Further, the second control module can be provided as an explosion-proof distribution box.

[0042] Further, one of the circuit breakers QF3 and QF5 is closed and the other is opened. One of the circuit breakers QF4 and QF6 is closed and the other is opened. In other words, the circuit breakers QF3 and QF5 are mechanically interlocked, and the circuit breakers QF4 and QF6 are mechanically interlocked. Specifically, when the circuit breakers QF5 and QF6 are both closed, the circuit breakers QF3 and QF4 are both opened. In other words, when the first control module is in a standby state, the second control module is in a shutdown state. At this time, the two drainage pumps can only be controlled by the first control module. Conversely, when the circuit breakers QF5 and QF6 are both opened, the circuit breakers QF3 and QF4 are both closed. In other words, when the first control module is in a shutdown state, the second control module is in a standby state. At this time, the two drainage pumps can only be controlled by the second control module. This arrangement allows manual control by the second control module when the first control module needs to be shut down for maintenance, forming a redundant control.

[0043] The above only describes preferred embodiments of the present application, and it should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A condensate recovery device based on redundancy technology, characterized in that, include: Storage tanks, used to store condensate; A first drainage pump has its inlet connected to the storage tank, and the first drainage pump is capable of draining the water from the storage tank. The second drainage pump has its inlet connected to the storage tank and is capable of draining the water from the storage tank. The control system is electrically connected to both the first and second drainage pumps, and the control system is capable of controlling the on / off states of the first and second drainage pumps.

2. The condensate recovery device based on redundancy technology according to claim 1, characterized in that, The control system includes: power supply; The first control module is electrically connected to the power supply, the first drainage pump and the second drainage pump. The first control module enables the power supply to supply power to one of the first drainage pump and the second drainage pump. The second control module is connected to the power supply, the first drainage pump, and the second drainage pump. The second control module enables the power supply to supply power to one of the first drainage pump and the second drainage pump.

3. A condensate recovery device based on redundancy technology according to claim 2, characterized in that, The first control module includes circuit breakers QF1, QF5 and QF6, and contactors KM101 and KM102; The power supply, the circuit breaker QF1, the contactor KM101, the circuit breaker QF5, and the first drainage pump are connected in series. The power supply, the circuit breaker QF1, the contactor KM102, the circuit breaker QF6, and the second drainage pump are connected in series.

4. A condensate recovery device based on redundancy technology according to claim 3, characterized in that, The first control module also includes a thermal relay KH101, which is connected in series between the contactor KM101 and the circuit breaker QF5; and / or The first control module also includes a thermal relay KH102, which is connected in series between the contactor KM102 and the circuit breaker QF6.

5. A condensate recovery device based on redundancy technology according to claim 3, characterized in that, The second control module includes circuit breakers QF, QF1', QF2', QF3 and QF4, and contactors KM103 and KM104; The power supply, the circuit breakers QF and QF1', the contactor KM103, the circuit breaker QF3, and the first drainage pump are connected in series. The power supply, the circuit breakers QF and QF2', the contactor KM104, the circuit breaker QF5, and the second drainage pump are connected in series. When one of the circuit breakers QF3 and QF5 is closed, the other is open; When one of the circuit breakers QF4 and QF6 is closed, the other is open.

6. A condensate recovery device based on redundancy technology according to claim 5, characterized in that, The second control module also includes a thermal relay KH103, which is connected in series between the contactor KM103 and the circuit breaker QF3; and / or The first control module also includes a thermal relay KH104, which is connected in series between the contactor KM104 and the circuit breaker QF4.

7. A condensate recovery device based on redundancy technology according to claim 1, characterized in that, The control system further includes a liquid level detection device and a control unit. The liquid level detection device can detect the liquid level of the storage tank. The liquid level detection device, the first drainage pump, and the second drainage pump are all electrically connected to the control unit. The control unit can control the opening and closing states of the first drainage pump and the second drainage pump according to the liquid level.

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