CN213395273U - Adjusting device of combined cycle unit water system - Google Patents

Abstract

The technical scheme of the utility model is realized like this: the adjusting device of the combined cycle unit water system comprises a boiler, a deaerator, a first water discharging device connected with the boiler, a second water discharging device connected with the deaerator, a reservoir and a cooling tower, wherein the reservoir is connected with an inlet of the cooling tower through a deaeration pipeline, and an outlet of the cooling tower is communicated with a turbine cycle water system; the degassing pipeline comprises an overflow pipe and a recovery pipe, the overflow pipe is arranged on one side of the reservoir and is communicated with the reservoir, the recovery pipe is communicated with the overflow pipe, a water storage ball is arranged on the recovery pipe, a flow sensor is arranged on the overflow pipe, a water inlet valve and a water outlet valve are respectively arranged at two ends of the recovery pipe, a liquid level sensor is arranged in the water storage ball, and a first exhaust valve is further arranged at the upper end of the water storage ball; the utility model has the advantages that: and redundant air in water circulation is removed, and the stable work of a circulating water system is ensured.

Description

Adjusting device of combined cycle unit water system

Technical Field

The utility model belongs to the technical field of the circulating water system technique and specifically relates to an adjusting device of combined cycle unit water system.

Background

In a modern large-scale coal or gas power plant, a circulating water system is used for continuously providing cooling water for condensing exhaust steam of a turbine to a condenser of a generator set, and heat released during the condensation of the exhaust steam is taken away by the cooling water, so that the temperature and the vacuum degree of the steam side of the condenser are maintained, and the enthalpy drop of the steam in the turbine is increased; therefore, the output of the steam turbine is increased under the condition of keeping the fuel consumption unchanged, and the power generation efficiency of the whole power plant is also improved. In China, in regions with water shortage, most of circulating water of small steam turbine generator units in the regions is river water or waste water with high salt content which is recycled, so that the cost of treating chemicals of a circulating water system is increased, and the efficiency of a steam turbine is seriously influenced by scaling of a condenser copper pipe of the steam turbine frequently.

The regular blowdown of traditional small-size turbo generator set's boiler and oxygen-eliminating device blowdown drain are all directly discharged to the trench, do not utilize multipurposely to cause very big waste, simultaneously, current circulating water system when the circulation uses, have recycle not abundant, and the phenomenon that air admission influences work occasionally in the circulation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a adjusting device of combined cycle unit water system for solve the problem among the above-mentioned background art.

The technical scheme of the utility model is realized like this: the utility model provides an adjusting device of combined cycle unit water system which characterized in that: the system comprises a boiler, a deaerator, a first drainage device connected with the boiler, a second drainage device connected with the deaerator, and a reservoir, wherein the first drainage device and the second drainage device are both communicated with the reservoir; the degassing pipeline is including installing in cistern one side and with the overflow pipe of cistern intercommunication and the recovery tube with the overflow pipe intercommunication, the both ends of recovery tube communicate with overflow pipe and cooling tower respectively, be provided with the retaining ball on the recovery tube, install flow sensor on the overflow pipe, water intaking valve and outlet valve are installed respectively to the both ends of recovery tube, install level sensor in the retaining ball, first exhaust valve is still installed to this retaining ball upper end.

Preferably: the first drainage device and the second drainage device are both drainage pipes, and a drainage flash tank is connected between the boiler and the reservoir.

Preferably: the recovery pipe is an S-shaped bent pipe, and a second exhaust valve is installed at the highest position of the recovery pipe.

Preferably: be provided with the unhurried current subassembly in the cistern, first drainage device and second drainage device all are connected with a unhurried current subassembly, the unhurried current subassembly includes the trapezoidal unhurried current piece that a plurality of stacked gradually, the unhurried current piece is the porous structure unhurried current piece that can supply the rivers to pass, and fixed connection between each unhurried current piece, the undermost unhurried current piece is fixed in the cistern bottom, sets up the recess that supplies rivers to get into on the unhurried current piece up end of top.

Preferably: the slow flow block is made of polyurethane sponge.

The utility model has the advantages that: the utility model, through the cyclic utilization of the water discharged by the boiler periodically and the water discharged by the deaerator, saves resources on one hand, and reduces the adding amount of circulating water agent and the risk of scaling in the condenser on the other hand because the water quality condition of the discharged water is better; and simultaneously, redundant air in water circulation is removed through a water removal pipeline, so that the stable work of a circulating water system is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of a water removal pipeline according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a slow flow module according to an embodiment of the present invention;

the examples in the figure are: 1. the device comprises a boiler, 2, a deaerator, 3, a first drainage device, 4, a second drainage device, 5, a reservoir, 6, a cooling tower, 7, an overflow pipe, 8, a recovery pipe, 9, a water storage ball, 10, a water inlet valve, 11, a water outlet valve, 12, a flow sensor, 13, a liquid level sensor, 14, a first exhaust valve, 15, a drainage flash tank, 16, a second exhaust valve, 17, a slow flow block, 18 and a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

As shown in fig. 1 and fig. 2, the utility model discloses an adjusting device for a combined cycle unit water system, in the specific embodiment of the utility model, the adjusting device comprises a boiler 1, a deaerator 2, a first drainage device 3 connected with the boiler 1, a second drainage device 4 connected with the deaerator 2, and a reservoir 5, wherein the first drainage device 3 and the second drainage device 4 are both communicated with the reservoir 5, a cooling tower 6 is arranged on one side of the reservoir 5, the reservoir 5 is connected with an inlet of the cooling tower 6 through a deaeration pipeline, and an outlet of the cooling tower 6 is communicated with a turbine cycle water system; the degassing pipeline is including installing in 5 one sides of cistern and with overflow pipe 7 of 5 intercommunications of cistern and the recovery tube 8 that communicates with overflow pipe 7, the both ends of recovery tube 8 communicate with overflow pipe 7 and cooling tower 6 respectively, be provided with retaining ball 9 on the recovery tube 8, install flow sensor 12 on the overflow pipe 7, water intaking valve 10 and outlet valve 11 are installed respectively to the both ends of recovery tube 8, install level sensor 13 in the retaining ball 9, first exhaust valve 14 is still installed to this retaining ball 9 upper end.

In this embodiment, the first and second water discharging devices 3 and 4 are both water discharging pipes, and a water discharging flash tank 15 is connected between the boiler 1 and the water storage tank 5.

Through the technical scheme, the boiler 1 periodically discharges sewage and the deaerator 2 discharges sewage and drains water and is collected into the water storage tank 5, the sewage is degassed by the degassing component and enters the inlet of the cooling tower 6, and the sewage enters the circulating water system after being cooled by the cooling tower 6; after the first drainage device 3 and the second drainage device 4 discharge sewage into the water storage tank 5 in a centralized manner, water in the water storage tank 5 is increased gradually, relatively clean water on the upper layer overflows into the overflow pipe 7, the flow sensor 12 senses a water flow signal, the first exhaust valve 14 and the water inlet valve 10 are opened, the first exhaust valve 14 effectively exhausts redundant gas in the water outlet pipe, when the water level in the water storage ball 9 exceeds the water outlet of the water storage ball 9, the liquid level sensor 13 is triggered, the water outlet valve 11 is opened, and the beam current enters the cooling tower 6; the airless delivery of water flow circulation is realized, the water can be continuously fed by the circulating water pump, when the liquid level in the water storage ball 9 drops, the water inlet amount of the water storage ball 9 is reduced, the overflow water amount is small, the liquid level sensor 13 cannot sense the water level, the water outlet valve 11 is closed, the first exhaust valve 14 is opened, the air is blocked, and the air is prevented from entering the pipeline; the liquid level sensor 13 is arranged above the water outlet of the water storage ball 99, so that the water outlet of the water storage ball 9 is ensured to be completely isolated from air.

In this embodiment, the recovery pipe 8 is an S-shaped bent pipe, and a second exhaust valve 16 is installed at the highest position of the recovery pipe 8.

Through above-mentioned technical scheme, the setting of second discharge valve 16 guarantees dual exhaust, increases exhaust efficiency, guarantees to exhaust completely, and the water flow of being convenient for is carried to S type return bend, easily forms the water seal, is convenient for to the emission of air.

Example 2

As shown in fig. 3, the present embodiment is different from the above embodiments in that: in this embodiment, a flow slowing assembly is arranged in the reservoir 5, the first drainage device 3 and the second drainage device 4 are both connected with one flow slowing assembly, the flow slowing assembly includes a plurality of trapezoidal flow slowing blocks 17 which are sequentially stacked, the flow slowing blocks 17 are porous flow slowing blocks 17 through which water can pass, the flow slowing blocks 17 are fixedly connected with each other, the flow slowing block 17 at the lowest end is fixed at the bottom of the reservoir 5, and a groove 18 into which water can enter is formed in the upper end surface of the flow slowing block 17 at the highest end; the slow flow block 17 is made of polyurethane sponge.

Through above-mentioned technical scheme, through the setting of slowly flowing the subassembly, cause great rivers fluctuation to influence hydrologic cycle when avoiding first drainage device 3 and second drainage device 4 to intake, rivers export slowly to flow out in the hole of follow mass flow 17 again on the recess 18, reduce the impact force when intaking, reduce the flow of water simultaneously, the impurity of being convenient for deposits to cistern 5 bottoms naturally, avoids the water that contains impurity to carry out hydrologic cycle.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides an adjusting device of combined cycle unit water system which characterized in that: the system comprises a boiler, a deaerator, a first drainage device connected with the boiler, a second drainage device connected with the deaerator, and a reservoir, wherein the first drainage device and the second drainage device are both communicated with the reservoir; the degassing pipeline is including installing in cistern one side and with the overflow pipe of cistern intercommunication and the recovery tube with the overflow pipe intercommunication, the both ends of recovery tube communicate with overflow pipe and cooling tower respectively, be provided with the retaining ball on the recovery tube, install flow sensor on the overflow pipe, water intaking valve and outlet valve are installed respectively to the both ends of recovery tube, install level sensor in the retaining ball, first exhaust valve is still installed to this retaining ball upper end.

2. The adjusting device of a combined cycle unit water system according to claim 1, wherein: the first drainage device and the second drainage device are both drainage pipes, and a drainage flash tank is connected between the boiler and the reservoir.

3. The adjusting device of a combined cycle unit water system according to claim 1, wherein: the recovery pipe is an S-shaped bent pipe, and a second exhaust valve is installed at the highest position of the recovery pipe.

4. The adjusting device of a combined cycle unit water system according to any one of claims 1 to 3, wherein: be provided with the unhurried current subassembly in the cistern, first drainage device and second drainage device all are connected with a unhurried current subassembly, the unhurried current subassembly includes the trapezoidal unhurried current piece that a plurality of stacked gradually, the unhurried current piece is the porous structure unhurried current piece that can supply the rivers to pass, and fixed connection between each unhurried current piece, the undermost unhurried current piece is fixed in the cistern bottom, sets up the recess that supplies rivers to get into on the unhurried current piece up end of top.

5. The adjusting device of a combined cycle unit water system according to claim 4, wherein: the slow flow block is made of polyurethane sponge.

Images