CN217899841U - Air compressor machine heat utilization system - Google Patents
Air compressor machine heat utilization system Download PDFInfo
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- CN217899841U CN217899841U CN202221733856.6U CN202221733856U CN217899841U CN 217899841 U CN217899841 U CN 217899841U CN 202221733856 U CN202221733856 U CN 202221733856U CN 217899841 U CN217899841 U CN 217899841U
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Abstract
The utility model relates to the technical field of air compressor heat energy recycling, in particular to an air compressor heat energy utilization system, which comprises a condensation water tank, wherein the outlet end of the condensation water tank is connected with a condenser through an outlet main pipe; the inlet end of the air compressor is connected with the outlet main pipe through a water inlet pipeline, the outlet end of the air compressor is connected with a water outlet pipeline, one path of the outlet end of the water outlet pipeline is connected with the condensation water tank through a first water return pipeline, and the other path of the outlet end of the water outlet pipeline is connected with the condenser through a second water return pipeline; and a heat flow pipeline of the plate heat exchanger is connected with the first water return pipeline in series, and a cold flow pipeline of the plate heat exchanger is connected with closed cold water. Aiming at the characteristic that a condenser needs to be continuously supplemented with condensed water when a heat supply unit operates, a normal-temperature water source is led from a condensed water supplementing pump outlet main pipe and is used as a cooling water source of an air compressor, on one hand, the air compressor can be ensured to output a normal-temperature air source to meet the requirements of users, on the other hand, heat generated by air compression is utilized to heat the water supplement of the condenser, and the temperature of the condensed water supplement is increased and then the condensed water is sent into the condenser.
Description
Technical Field
The utility model relates to an air compressor machine heat recovery utilizes technical field, more specifically, relates to an air compressor machine heat utilization system.
Background
At present, the temperature of air compressed by an air compressor can be generally increased to about 170 ℃, and the temperature of instrument air and plant air required by a heat supply unit of a power plant is generally normal temperature. Therefore, a cooler is required to be arranged at the outlet of the air compressor to cool the compressed air and the machine shell. The power plant generally adopts closed cold water as a cooling water source of the air compressor to take away heat generated by air compressed by the air compressor, and the temperature of the cooling water is increased and then the heat is released to the open type circulating water system through the closed type cooler, so that waste of certain heat resources is caused, and meanwhile, the electric energy consumption of the closed type cooling water pump and the electric energy consumption of the circulating water pump are increased.
Therefore, it is necessary to provide a cooling system of an air compressor with low energy consumption.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the current stage technique, the utility model provides an air compressor machine heat utilization system sends into the condenser after improving condenser entry end condensate water moisturizing temperature through the air compressor machine, and the produced heat of air compressor machine compressed air is taken away to the condensate water simultaneously, reduces closed cooler energy loss.
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model provides an air compressor machine heat utilization system, includes: the outlet end of the condensation water tank is connected with the condenser through an outlet main pipe; the inlet end of the air compressor is connected with the outlet main pipe through a water inlet pipeline, the outlet end of the air compressor is connected with a water outlet pipeline, one path of the outlet end of the water outlet pipeline is connected with the condensation water tank through a first water return pipeline, and the other path of the outlet end of the water outlet pipeline is connected with the condenser through a second water return pipeline; and a heat flow pipeline of the plate heat exchanger is connected with the first water return pipeline in series, and a cold flow pipeline of the plate heat exchanger is connected with closed cold water.
As a further optimized technical scheme, a plurality of air compressors are arranged, and water inlet pipelines of the plurality of air compressors are connected with the outlet main pipe in parallel; and the water outlet pipelines of the plurality of air compressors are connected in parallel.
As a further optimized technical scheme, a cooling water return water pneumatic isolation valve and a cooling water return valve are arranged on the water outlet pipeline.
As a further optimized technical scheme, a return water flow regulating valve is arranged on the second return water pipeline.
As a further optimized technical scheme, a cooling water inlet isolation valve is arranged on the water inlet pipeline.
As a further optimized technical scheme, a condensed water replenishing pump is arranged on the outlet main pipe.
As a further optimized technical scheme, the number of the condensed water replenishing pumps is two, and the two condensed water replenishing pumps are arranged at the upstream of the water inlet pipeline in parallel.
As a further optimized technical scheme, a water supplementing bypass pneumatic adjusting valve and a water supplementing bypass manual adjusting valve are arranged on the outlet main pipe.
As a further optimized technical scheme, the water supplementing bypass pneumatic regulating valve and the water supplementing bypass manual regulating valve are arranged at the downstream of the water inlet pipeline in parallel.
As a further optimized technical scheme, a recirculation flow regulating valve is arranged at the downstream of the plate heat exchanger.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses an air compressor machine heat utilization system, need to the incessant characteristics that supply the condensate water to the condenser when moving to the heat supply unit, draw from condensate water make-up pump export female pipe and connect the cooling water source of normal atmospheric temperature water source as the air compressor machine all the way, guarantee on the one hand that the air compressor machine can export normal atmospheric temperature air supply and satisfy the user's requirement, on the other hand utilizes the heat that air compression produced to heat the condenser moisturizing, send into the condenser after improving condensate water moisturizing temperature, with the recovery comprehensive utilization of realization energy, reduce the heat waste of generating set equipment, thereby energy-conservation has been reached and efficiency is improved the purpose.
Drawings
Fig. 1 is the embodiment of the utility model provides an air compressor machine heat utilization system.
In the figure, 100, a condensate tank; 110. an outlet header; 111. a water supplementing bypass pneumatic regulating valve; 112. a water supplement bypass manual regulating valve; 120. a condensate water replenishing pump;
200. an air compressor; 210. a water inlet pipeline; 211. a cooling water inlet isolation valve; 220. a water outlet pipeline; 221. the cooling water returns to the pneumatic isolating valve; 222. a cooling water return valve; 230. a first water return line; 231. a recirculation flow control valve; 240. a second water return pipeline; 241. a backwater flow regulating valve;
300. a plate heat exchanger.
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1, the utility model provides an air compressor machine 200 heat energy utilization system of preferred embodiment, include: the outlet end of the condensation water tank 100 is connected with a condenser through an outlet main pipe 110; an air compressor 200, an inlet end of which is connected to the outlet main pipe 110 through a water inlet pipeline 210, and an outlet end of which is connected to a water outlet pipeline 220, wherein one path of the outlet end of the water outlet pipeline 220 is connected to the condensed water tank 100 through a first water return pipeline 230, and the other path is connected to the condenser through a second water return pipeline 240; the plate heat exchanger 300 has a hot flow line connected in series with the first return line 230, and a cold flow line connected to cold water.
In some embodiments of the present application, the air compressors 200 are provided in plurality, and the water inlet pipelines 210 of the plurality of air compressors 200 are connected in parallel to the outlet main pipe 110; the water outlet pipelines 220 of a plurality of air compressors 200 are connected in parallel.
In some embodiments of the present application, the water outlet line 220 is provided with a cooling water return pneumatic isolation valve 221 and a cooling water return valve 222.
In some embodiments of the present application, a return water flow regulating valve 241 is disposed on the second return water pipe 240.
In some embodiments of the present application, the water inlet pipe 210 is provided with a cooling water inlet isolation valve 211.
In some embodiments of the present application, a condensate replenishing pump 120 is disposed on the outlet header 110. Preferably, there are two condensate make-up water pumps 120, and the two condensate make-up water pumps 120 are arranged in parallel at the upstream of the water inlet pipeline 210.
In some embodiments of the present application, the outlet header 110 is provided with a water supplement bypass adjusting valve, which includes a water supplement bypass pneumatic adjusting valve 111 and a water supplement bypass manual adjusting valve 112; two regulating valves are arranged in parallel downstream of the water inlet line 210.
In some embodiments of the present application, a recirculation flow regulating valve 231 is disposed downstream of the plate heat exchanger 300.
Example (b):
the two machine sets in the second period of the factory are designed to supply 80 tons of heat/hour, and the instrument and plant gas systems are provided with four 40Nm flow rates 3 The air compressor 200 with the exhaust pressure of 8.0Bar is used for three purposes during normal operation. The air compressor 200 has the following requirements for cooling water: flow rate 25.5m 3 The water inlet temperature is less than or equal to 40 ℃ and the water outlet temperature is less than or equal to 50 ℃. The heat generated by the air compressor 200 compressing the air is taken away by originally adopting closed cold water as a cooling water source of the air compressor 200, and the heat is released to the open circulating water system through the closed cooler after the temperature of the cooling water is increased, so that the waste of certain heat resources is caused. This embodiment is to the characteristics that need incessant supplementary condensate water to the condenser when the heat supply unit moves, draw from condensate water make-up pump 120 export main pipe 110 and connect the normal atmospheric temperature water source of the same way as the cooling water source of air compressor machine 200, guarantee on the one hand that air compressor machine 200 can export the normal atmospheric temperature air supply and satisfy the gas of power plant's instrument and the gas user's requirement of house service, on the other hand utilizes the heat that air compressor machine 200's air compression produced to heat the condenser moisturizing, send into the condenser after improving condensate water make-up temperature, with the recovery comprehensive utilization maximize that realizes power plant's energy, reduce the heat waste of generating set equipment, the electric energy consumption of closed cooling water pump and circulating water pump has also been reduced simultaneously, thereby energy-conserving purpose of raising the effect has been reached.
Description of the modification scheme:
1. the water outlet pipeline 220 of each air compressor 200 is provided with a cooling water return pneumatic isolation valve 221, and the cooling water source can be automatically cut off after the air compressors 200 are stopped. The factory instrument and factory gas system totally comprises four air compressors 200,three functions are provided for normal operation. The cooling water flow of the single air compressor 200 is 25.5m 3 The total flow rate of cooling water is 76.5m according to the total flow rate of three running machines 3 And h, the water replenishing amount of the condensed water can be basically met when the maximum heat supply load of the unit is met.
2. The temperature of the condensed water after absorbing the heat generated by air compression through the air compressor 200 is generally increased by about 10 ℃, the condensed water is still lower than the saturation temperature of the condenser under the backpressure under the operating condition in each season, the water is not vaporized when entering the condenser, and the water supplementing temperature requirement of the condenser is met.
3. When the heat supply load is further increased or the unit is started, the water supplementing quantity can be increased by the condensed water supplementing bypass adjusting valve when the cooling water of the air compressor 200 is used as the condensed water supplementing water and cannot meet the water supplementing requirement of the condenser.
4. When the heat supply network is in failure and the water supplement flow of the condenser is reduced, the water supplement amount is controlled by the return water flow regulating valve 241 of the air compressor 200, meanwhile, the return water recirculation flow regulating valve 231 of the air compressor 200 is arranged in the system, and the return water of the air compressor 200 can also pass through the plate heat exchanger 300 to release heat of the closed cold water and then enters the condensation water tank 100 through the recirculation regulating valve, so that the cooling water flow and the cooling temperature can meet the operation requirements of the air compressor 200.
In this embodiment, the air compressor of the power plant is operated in spring and autumn, and the parameters of the air compressor exhaust and the cooling water are detailed in the following table 1:
TABLE 1 air compressor discharge and Cooling Water parameters
| Item | Unit of | Numerical value |
| Air compressor exhaust flow | m3/min | 41.4 |
| Primary stage exhaust pressure of air compressor | MPa.a | 0.23 |
| Air compressor primary stage exhaust temperature | ℃ | 180 |
| Secondary exhaust pressure of air compressor | MPa.a | 0.8 |
| Temperature of natural gas entering plant | ℃ | 175 |
| Flow rate of cooling water | t/h | 25.5 |
| Inlet temperature of cooling water | ℃ | 25 |
| Closed water return temperature | ℃ | 35.6 |
| Recoverable heat energy | kW | 315.4 |
It can be seen from the table above that according to the air compressor machine three way one and prepare the operation mode, but this embodiment air compressor machine heat recovery utilizes system heatable condensate water moisturizing 76.5t/h, recoverable air compressor machine heat energy 946.2kW in total. Therefore, the air compressor heat energy recycling system can reasonably utilize heat generated by air compressor compressed air to heat condensed water for water supplement, so that the energy recovery and comprehensive utilization maximization of a power plant is realized, the comprehensive heat efficiency of the gas power plant is improved, and the purposes of saving energy and improving efficiency are achieved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides an air compressor machine heat utilization system which characterized in that includes:
the outlet end of the condensation water tank is connected with the condenser through an outlet main pipe;
the inlet end of the air compressor is connected with the outlet main pipe through a water inlet pipeline, the outlet end of the air compressor is connected with a water outlet pipeline, one path of the outlet end of the water outlet pipeline is connected with the condensation water tank through a first water return pipeline, and the other path of the outlet end of the water outlet pipeline is connected with the condenser through a second water return pipeline;
and a heat flow pipeline of the plate heat exchanger is connected with the first water return pipeline in series, and a cold flow pipeline of the plate heat exchanger is connected with closed cold water.
2. The air compressor heat energy utilization system as claimed in claim 1, wherein a plurality of air compressors are provided, and water inlet pipelines of the plurality of air compressors are connected in parallel with the outlet header; and the water outlet pipelines of the plurality of air compressors are connected in parallel.
3. The heat energy utilization system of the air compressor as claimed in claim 1 or 2, wherein the water outlet pipeline is provided with a cooling water return pneumatic isolation valve and a cooling water return valve.
4. The air compressor heat energy utilization system according to claim 1 or 2, wherein a return water flow regulating valve is arranged on the second return pipeline.
5. The heat energy utilization system of the air compressor as claimed in claim 1 or 2, wherein the water inlet pipeline is provided with a cooling water inlet isolation valve.
6. The air compressor heat energy utilization system according to claim 1, wherein a condensate water replenishing pump is arranged on the outlet main pipe.
7. The air compressor heat energy utilization system according to claim 6, wherein two condensate water replenishing pumps are provided, and the two condensate water replenishing pumps are arranged in parallel at an upstream of the water inlet pipeline.
8. The air compressor heat energy utilization system according to claim 1, wherein a water supplement bypass pneumatic adjusting valve and a water supplement bypass manual adjusting valve are arranged on the outlet main pipe.
9. The air compressor heat energy utilization system according to claim 8, wherein the water supplement bypass pneumatic adjusting valve and the water supplement bypass manual adjusting valve are arranged downstream of the water inlet pipeline in parallel.
10. The air compressor heat energy utilization system as claimed in claim 1, wherein a recirculation flow regulating valve is disposed downstream of the plate heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221733856.6U CN217899841U (en) | 2022-07-07 | 2022-07-07 | Air compressor machine heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221733856.6U CN217899841U (en) | 2022-07-07 | 2022-07-07 | Air compressor machine heat utilization system |
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| Publication Number | Publication Date |
|---|---|
| CN217899841U true CN217899841U (en) | 2022-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221733856.6U Active CN217899841U (en) | 2022-07-07 | 2022-07-07 | Air compressor machine heat utilization system |
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| Country | Link |
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| CN (1) | CN217899841U (en) |
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2022
- 2022-07-07 CN CN202221733856.6U patent/CN217899841U/en active Active
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