CN211260990U - Steam heat transfer constant pressure water charging system - Google Patents
Steam heat transfer constant pressure water charging system Download PDFInfo
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- CN211260990U CN211260990U CN201921661508.0U CN201921661508U CN211260990U CN 211260990 U CN211260990 U CN 211260990U CN 201921661508 U CN201921661508 U CN 201921661508U CN 211260990 U CN211260990 U CN 211260990U
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Abstract
The utility model discloses a steam heat transfer constant pressure water charging system, a serial communication port, steam heat transfer constant pressure water charging system include water heat exchanger, condensate heat exchanger, hot water main pump, hot water and be equipped with pump, inflation water pitcher. Municipal steam is divided into two paths, the branch paths are connected to the expansion water tank, the main path forms condensed water after heat exchange through the hot water heat exchanger, the main path is divided into two paths after heat exchange through the condensed water heat exchanger, the branch paths are connected to the inlet of the hot water standby pump, and the main path is discharged outdoors. The hot water backwater is preheated by the condensed water heat exchanger and then finally exchanges heat by the hot water heat exchanger to form hot water supply, and the hot water supply is pumped to a user by the hot water main pump and the hot water standby pump, and an expansion water tank is arranged on the hot water supply pipe behind the pump. The steam-hot water heat exchange system can not only meet the normal and stable operation of the steam-hot water heat exchange system, but also utilize the residual heat and residual pressure of steam and condensed water thereof and an idle standby water pump, thereby reducing the investment cost and the operation cost.
Description
Technical Field
The utility model relates to a steam heat transfer level pressure water charging system is applied to all kinds of industrial factory building and civil buildings that use municipal steam as the heat source heat transfer and use hot water system, and usable steam and condensate water carry out the level pressure moisturizing, belongs to hot water supply technical field.
Background
Various industrial plants and civil buildings generally have the requirements of heating, air conditioning, life or process production, hot water with a certain temperature is required to be used, when a heat source comes from municipal steam, a steam-water heat exchanger is arranged in the conventional method, condensation water is formed after the heat exchange of the municipal steam at the primary side and is discharged, and hot water is formed after the heat exchange of hot water return water at the secondary side and is supplied for outputting. As shown in fig. 1, a heat exchanger secondary side closed circulation hot water system is provided with a constant pressure water supplementing device on a hot water supply pipeline, the constant pressure is realized by a gas expansion tank, and the water supplementing is realized by a water supplementing pump.
However, in this method, a constant pressure water replenishing device is usually installed on the hot water return pipe, and it is necessary to periodically replenish gas to the expansion tank to maintain a constant pressure, and to replenish tap water and other water sources. On the other hand, the condensation water after municipal steam heat exchange is directly discharged, the residual heat and water are not fully utilized, and the energy utilization rate is low.
Disclosure of Invention
In order to solve the technical problem, the technical scheme of the utility model is to provide a steam heat transfer constant pressure water charging system. The steam-hot water heat exchange system can not only meet the normal and stable operation of the steam-hot water heat exchange system, but also utilize the residual heat and residual pressure of steam and condensed water thereof and an idle standby water pump, thereby reducing the investment cost and the operation cost.
In order to achieve the aim, the utility model provides a steam heat transfer level pressure water charging system, be equipped with pump, inflation water pitcher including hot water heat exchanger, condensate heat exchanger, hot water main pump, hot water. Municipal steam is divided into two paths, the branch paths are connected to the expansion water tank, the main path forms condensed water after heat exchange through the hot water heat exchanger, the main path is divided into two paths after heat exchange through the condensed water heat exchanger, the branch paths are connected to the inlet of the hot water standby pump, and the main path is discharged outdoors. The hot water backwater is preheated by the condensed water heat exchanger and then finally exchanges heat by the hot water heat exchanger to form hot water supply, and the hot water supply is pumped to a user by the hot water main pump and the hot water standby pump, and an expansion water tank is arranged on the hot water supply pipe behind the pump.
Preferably, before entering the hot water heat exchanger, the municipal steam is decompressed to a constant pressure required by the expansion water tank through a pressure reducing valve in one branch and then is connected to the expansion water tank.
Preferably, the expansion water tank is arranged on a hot water supply pipe behind the hot water main pump and the hot water standby pump, the top of the expansion water tank is provided with a safety valve, the tank wall is connected with municipal steam, and the bottom of the expansion water tank is connected with hot water supply.
Preferably, the hot water heat exchanger is a steam-water heat exchanger, a condensed water outlet formed after municipal steam heat exchange at the primary side is connected with a primary side inlet of the condensed water heat exchanger, a secondary side hot water return inlet is connected with a secondary side outlet of the condensed water heat exchanger, and a hot water supply outlet is connected with a hot water main pump and a hot water standby pump.
Preferably, the condensed water heat exchanger is a water-water heat exchanger, the outlet of the primary side is connected with condensed water for drainage, the inlet of the secondary side is connected with hot water for return, and the valves at the two sides are fully opened without adjustment.
Preferably, the inlet of the hot water standby pump is divided into two paths, one path is connected to the hot water supply outlet of the hot water heat exchanger through the standby control valve, and the other path is connected to the condensed water outlet of the condensed water heat exchanger through the bypass control valve and the check valve.
Preferably, the hot water main pump and the hot water backup pump are both variable frequency pumps, the flow of the hot water main pump and the flow of the hot water backup pump are adjusted according to the pressure difference between hot water supply and hot water return, and the flow of the hot water backup pump can be adjusted according to the pressure of the expansion water tank.
The beneficial effects of the utility model reside in that: on the premise of ensuring normal and stable operation of the steam hot water heat exchange system, municipal steam is used for supplementing steam and pressure to the expansion water tank, municipal steam condensate is used for preheating hot water return water and is also used for supplementing water to the hot water system, and the influence of low temperature on the temperature of the hot water system in conventional tap water supplementation is reduced. Meanwhile, a standby circulating pump of the hot water system is also used as a water replenishing pump, so that the utilization rate of idle equipment is improved. The utility model discloses an effectively utilized the waste heat excess pressure surplus water of steam and condensate water thereof, improved energy availability factor to the investment cost and the running cost of equipment have been saved.
Drawings
FIG. 1 is a schematic view of a steam heat exchange constant pressure water replenishing system in the prior art.
Fig. 2 is a schematic view of a steam heat exchange constant-pressure water replenishing system provided in this embodiment.
Description of reference numerals:
1 is municipal steam, 2 is condensed water, 3 is a hot water heat exchanger, 4 is a standby control valve, 5 is a bypass control valve, 6 is a check valve, 7 is a hot water main pump, 8 is a hot water standby pump, 9 is a pressure reducing valve, 10 is a safety valve, 11 is an expansion water tank, 12 is hot water supply, 13 is hot water return, and 14 is a condensed water heat exchanger.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Examples
Fig. 2 is a schematic view of a steam heat exchange constant-pressure water replenishing system provided by this embodiment, where the steam heat exchange constant-pressure water replenishing system includes a hot water heat exchanger 3, a condensed water heat exchanger 14, a hot water main pump 7, a hot water backup pump 8, and an expansion water tank 11. Municipal steam 1 is divided into two paths, a branch path is connected to the expansion water tank 11, a main path forms condensed water 2 after heat exchange through the hot water heat exchanger 3, the main path is divided into two paths after heat exchange through the condensed water heat exchanger 14, the branch path is connected to an inlet of the hot water standby pump 8, and the main path is discharged to the outside. The hot water return 13 is preheated by the condensed water heat exchanger 14, then finally exchanges heat by the hot water heat exchanger 3 to form hot water supply 12, and is sent to a user by the hot water main pump 7 and the hot water backup pump 8, and an expansion water tank 11 is arranged on a pipe of the hot water supply 12 after the pump.
Before the municipal steam 1 enters the hot water heat exchanger 3, the municipal steam is decompressed to a constant pressure required by the expansion water tank 11 through the pressure reducing valve 9 in one path and then is connected to the expansion water tank 11.
The expansion water tank 11 is arranged on a hot water supply pipe 12 behind the hot water main pump 7 and the hot water standby pump 8, the top of the expansion water tank is provided with a safety valve 10, the tank wall is connected with the municipal steam 1, and the bottom of the expansion water tank is connected with the hot water supply pipe 12.
The hot water heat exchanger 3 is a steam-water heat exchanger, an outlet of condensed water 2 formed after heat exchange of primary-side municipal steam 1 is connected with an inlet of a primary side of the condensed water heat exchanger 14, an inlet of secondary-side hot water return water 13 is connected with an outlet of a secondary side of the condensed water heat exchanger 14, and an outlet of a hot water supply 12 is connected with a hot water main pump 7 and a hot water standby pump 8.
The condensed water heat exchanger 14 is a water-water heat exchanger, the outlet of the primary side is connected with the condensed water 2 for drainage, the inlet of the secondary side is connected with the hot water return 13, and the valves on the two sides are fully opened without adjustment.
The inlet of the hot water standby pump 8 is divided into two paths, one path is connected to the outlet of the hot water supply 12 of the hot water heat exchanger 3 through the standby control valve 4, and the other path is connected to the outlet of the condensed water 2 of the condensed water heat exchanger 14 through the bypass control valve 5 and the check valve 6.
The hot water main pump 7 and the hot water backup pump 8 are frequency conversion pumps, the hot water main pump 7 and the hot water backup pump 8 adjust flow according to pressure difference between hot water supply 12 and hot water return 13, and the hot water backup pump 8 can also adjust flow according to pressure of the expansion water tank 11.
When the hot water main pump 7 fails, the bypass control valve 5 is closed, the standby control valve 4 is opened, and the hot water standby pump 8 is started to circulate the hot water system. When the pressure of the expansion water tank 11 is reduced and the hot water system needs water supplement, the standby control valve 4 is closed, the bypass control valve 5 is opened, the hot water standby pump 8 is started, and the water supplement of the hot water system is carried out.
Claims (7)
1. The steam heat exchange constant-pressure water replenishing system is characterized by comprising a hot water heat exchanger (3), a condensed water heat exchanger (14), a hot water main pump (7), a hot water standby pump (8) and an expansion water tank (11); the municipal steam (1) is divided into two paths, the branch paths are connected to the expansion water tank (11), the main path forms condensed water (2) after heat exchange through the hot water heat exchanger (3), the condensed water is divided into two paths after heat exchange through the condensed water heat exchanger (14), the branch paths are connected to the inlet of the hot water standby pump (8), and the main path is discharged to the outside; the hot water return water (13) is preheated by the condensed water heat exchanger (14), then finally exchanges heat by the hot water heat exchanger (3) to form hot water supply (12), and is sent to a user by the hot water main pump (7) and the hot water standby pump (8), and an expansion water tank (11) is arranged on a pipe of the hot water supply (12) after the pump.
2. The steam heat exchange constant-pressure water replenishing system according to claim 1, wherein the municipal steam (1) is branched into two paths and is decompressed to the constant-pressure required by the expansion water tank (11) through the decompression valve (9) before entering the hot water heat exchanger (3), and then is connected to the expansion water tank (11).
3. The steam heat exchange constant-pressure water replenishing system according to claim 1, wherein the expansion water tank (11) is arranged on a hot water supply water (12) pipe behind the hot water main pump (7) and the hot water standby pump (8), a safety valve (10) is arranged at the top of the expansion water tank, the tank wall is connected with municipal steam (1), and the bottom of the expansion water tank is connected with the hot water supply water (12).
4. The steam heat exchange constant-pressure water replenishing system according to claim 1, wherein the hot water heat exchanger (3) is a steam-water heat exchanger, an outlet of condensed water (2) formed after heat exchange of primary-side municipal steam (1) is connected with a primary-side inlet of the condensed water heat exchanger (14), an inlet of secondary-side hot water return water (13) is connected with a secondary-side outlet of the condensed water heat exchanger (14), and an outlet of a hot water supply (12) is connected with a hot water main pump (7) and a hot water backup pump (8).
5. The steam heat exchange constant-pressure water replenishing system according to claim 1, wherein the condensed water heat exchanger (14) is a water-water heat exchanger, a primary side outlet is connected with the condensed water (2) for draining, a secondary side inlet is connected with the hot water return water (13), and valves on two sides are fully opened without adjustment.
6. The steam heat exchange constant-pressure water replenishing system according to claim 1, wherein the inlet of the hot water standby pump (8) is divided into two paths, one path is connected to the outlet of the hot water supply (12) of the hot water heat exchanger (3) through the standby control valve (4), and the other path is connected to the outlet of the condensed water (2) of the condensed water heat exchanger (14) through the bypass control valve (5) and the check valve (6).
7. The steam heat exchange constant-pressure water replenishing system according to claim 1, wherein the hot water main pump (7) and the hot water standby pump (8) are frequency conversion pumps, the flow of the hot water main pump (7) and the flow of the hot water standby pump (8) are adjusted according to the pressure difference between hot water supply (12) and hot water return (13), and the flow of the hot water standby pump (8) can be adjusted according to the pressure of the expansion water tank (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921661508.0U CN211260990U (en) | 2019-10-07 | 2019-10-07 | Steam heat transfer constant pressure water charging system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921661508.0U CN211260990U (en) | 2019-10-07 | 2019-10-07 | Steam heat transfer constant pressure water charging system |
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| CN211260990U true CN211260990U (en) | 2020-08-14 |
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| CN201921661508.0U Active CN211260990U (en) | 2019-10-07 | 2019-10-07 | Steam heat transfer constant pressure water charging system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061328A (en) * | 2021-11-22 | 2022-02-18 | 苏州市洋基机电工程有限公司 | Steam and hot water dual-purpose plate type heat exchange system and use method thereof |
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2019
- 2019-10-07 CN CN201921661508.0U patent/CN211260990U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061328A (en) * | 2021-11-22 | 2022-02-18 | 苏州市洋基机电工程有限公司 | Steam and hot water dual-purpose plate type heat exchange system and use method thereof |
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