CN210346468U - Heat exchanger with back flush function - Google Patents
Heat exchanger with back flush function Download PDFInfo
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- CN210346468U CN210346468U CN201921001797.1U CN201921001797U CN210346468U CN 210346468 U CN210346468 U CN 210346468U CN 201921001797 U CN201921001797 U CN 201921001797U CN 210346468 U CN210346468 U CN 210346468U
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Abstract
The utility model relates to a heat exchanger with back flush function. The heat exchanger with the back flushing function comprises a heat exchanger body, wherein a first back flushing water inlet pipeline and a first back flushing water return pipeline are arranged on the primary side of the heat exchanger body; a second backwashing water inlet pipeline and a second backwashing water return pipeline are arranged on the secondary side of the heat exchanger body; the first filtering tank and the second filtering tank are arranged outside the heat exchanger body, the inlet of the first filtering tank is connected with the first backwashing water return pipeline, the inlet of the second filtering tank is connected with the second backwashing water return pipeline, and the outlets of the first filtering tank and the second filtering tank are connected with the liquid purifying tank through pipelines. The heat exchanger with the back washing function solves the problems that the existing plate type heat exchanger is easy to block and scale after being used for a certain period, prolongs the service cycle, and improves the working efficiency and the service life of the heat exchanger.
Description
Technical Field
The utility model relates to a heat exchanger technical field especially relates to a heat exchanger with back flush function.
Background
In recent years, due to the vigorous popularization and development of centralized heat supply, heat exchange equipment taking a plate heat exchanger as a main body is widely applied; however, because the water treatment is not in place, or a pipe network system is not clean, or the water quality of a water source is poor, and after the system is operated, the water quality and the hydraulic conditions in the heat exchanger channel are stable for a long time, the blockage and scaling in the plate heat exchanger channel are easily caused, and the phenomenon that the heat exchange efficiency is reduced is very common. After the heat exchanger usually runs for 1-2 heating seasons, the heat exchanger needs to be cleaned, so that the working efficiency of the heat exchanger and the workload of operators are greatly reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a make up the not enough of prior art, provide a heat exchanger with back flush function, solved the problem that exists among the prior art.
The utility model discloses a realize through following technical scheme:
a heat exchanger with a back washing function comprises a heat exchanger body, wherein a primary side inlet of the heat exchanger body is connected with a primary pipe network water supply pipeline, a first valve is arranged on the primary pipe network water supply pipeline, a primary side outlet of the heat exchanger body is connected with a primary pipe network water return pipeline, and a second valve is arranged on the primary pipe network water return pipeline; a secondary side inlet of the heat exchanger body is connected with a secondary pipe network water supply pipeline, a third valve is arranged on the secondary pipe network water supply pipeline, a secondary side outlet of the heat exchanger body is connected with a secondary pipe network water return pipeline, a fourth valve is arranged on the secondary pipe network water return pipeline, and a first backwashing water inlet pipeline and a first backwashing water return pipeline are further arranged on the primary side of the heat exchanger body; a second backwashing water inlet pipeline and a second backwashing water return pipeline are also arranged on the secondary side of the heat exchanger body; and a first filtering tank and a second filtering tank are arranged outside the heat exchanger body, the inlet of the first filtering tank is connected with the first backwashing water return pipeline, the inlet of the second filtering tank is connected with the second backwashing water return pipeline, and the outlets of the first filtering tank and the second filtering tank are connected with the inlet of a liquid purifying tank through pipelines.
Preferably, a first backwashing water inlet pipeline is arranged between a first-stage pipe network water supply pipeline outside an inlet of the first valve and a first-stage pipe network water return pipeline outside an outlet of the second valve, an outlet of the first backwashing water inlet pipeline is connected with an outlet on the primary side of the heat exchanger body, and a fifth valve is arranged on the first backwashing water inlet pipeline; a first backwashing water return pipeline is arranged between a first-stage pipe network water supply pipeline outside the outlet of the first valve and a first-stage pipe network water return pipeline outside the outlet of the second valve, a sixth valve is arranged on the first backwashing water return pipeline, the inlet of the first backwashing water return pipeline is connected with the inlet of the primary side of the heat exchanger body, the first backwashing water return pipeline is connected with the inlet of the first filtering pool, the outlet of the first filtering pool is connected with the inlet of the purified liquid pool, the first water outlet pipeline of the purified liquid pool is respectively connected with the first-stage pipe network water supply pipeline and the diode pipe network water supply pipeline, and a ninth valve is arranged on the first water outlet pipeline;
a second backwashing water inlet pipeline is arranged between a second-stage pipe network water supply pipeline outside the inlet of the third valve and a diode network water return pipeline outside the inlet of the fourth valve, the outlet of the second backwashing water inlet pipeline is connected with the secondary side outlet of the heat exchanger body, and a seventh valve is arranged on the second backwashing water inlet pipeline; a second backwashing water return pipeline is arranged on the second-stage pipe network water return pipeline outside the outlet of the fourth valve and the second-stage pipe network water inlet pipeline outside the outlet of the third valve, the inlet of the second backwashing water return pipeline is connected with the secondary side inlet of the heat exchanger body, and an eighth valve is arranged on the second backwashing water return pipeline; an outlet of the second backwashing water return pipeline is connected with an inlet of the second filtering tank, and an outlet of the second filtering tank is connected with an inlet of the liquid purifying tank; a second water outlet pipeline for discharging the purified water is also arranged on the liquid purifying tank.
Preferably, the heat exchanger with the back washing function further comprises a controller, and the controller is electrically connected with a flow meter, a press and a thermometer which are arranged on a water supply pipeline of the primary pipe network and a pressure gauge and a thermometer which are arranged on a water return pipeline of the primary pipe network respectively; the controller is respectively electrically connected with a pressure gauge, a flow meter and a temperature meter which are arranged on a water supply pipeline of the secondary pipe network, and the pressure gauge and the temperature meter on a water return pipeline of the secondary pipe network.
The controller controls the opening and closing of the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve respectively.
The controller is a PIC/STM controller.
The first filtering tank and the second filtering tank both comprise a tank body, a steel wire filter screen is arranged in the middle of the inside of the tank body, and an activated carbon net is supported on the inner wall of the tank body below the steel wire filter screen.
The filtering holes of the steel wire filter screen are 2-3 mm; the activated carbon net is fixed by a boss arranged on the inner side wall of the annular tank body, and the steel wire filter screen is fixedly arranged on the inner side wall of the tank body above the activated carbon net.
The utility model has the advantages that:
according to the heat exchanger with the back washing function, the back washing pipeline is arranged on the water inlet and outlet pipeline of the existing pipeline, and the control of each valve on the back washing pipeline is adopted, so that the back washing of the heat exchanger is well realized, external auxiliary power and water sources are not needed, the problems that the existing plate type heat exchanger is easy to block and scale after being used for a certain period are solved, the service cycle is prolonged, the working efficiency of the heat exchanger is improved, and the service life of the heat exchanger is prolonged. Through setting up filtering ponds and clean liquid pond, can filter and collect the anti-washing liquid of anti-washing pipeline, through the back output of natural sedimentation purification for the back flush intake, can further reduce back flush water consumption, practice thrift more.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1 is a heat exchanger body, 2 is a first-stage pipe network water supply pipeline, 3 is a first valve, 4 is a first-stage pipe network water return pipeline, 5 is a second valve, 6 is a second-stage pipe network water supply pipeline, 7 is a third valve, 8 is a second-stage pipe network water return pipeline, 9 is a fourth valve, 10 is a first backwashing water inlet pipeline, 11 is a fifth valve, 12 is a first backwashing water return pipeline, 13 is a sixth valve, 14 is a first filtering pool, 15 is a liquid purifying pool, 16 is a first water outlet pipeline, 17 is a ninth valve, 18 is a second backwashing water inlet pipeline, 19 is a seventh valve, 20 is a second backwashing water return pipeline, 21 is an eighth valve, 22 is a second filtering pool, 23 is a steel wire filtering net, 24 is an activated carbon net.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
As shown in fig. 1, the heat exchanger with the back washing function comprises a heat exchanger body 1, wherein a primary side inlet of the heat exchanger body is connected with a primary side pipe network water supply pipeline 2, a first valve 3 is arranged on the primary side pipe network water supply pipeline, a primary side outlet of the heat exchanger body is connected with a primary side pipe network water return pipeline 4, and a second valve 5 is arranged on the primary side pipe network water return pipeline; a secondary side inlet of the heat exchanger body is connected with a secondary pipe network water supply pipeline 6, a third valve 7 is arranged on the secondary pipe network water supply pipeline, a secondary side outlet of the heat exchanger body is connected with a secondary pipe network water return pipeline 8, and a fourth valve 9 is arranged on the secondary pipe network water return pipeline; a first backwashing water inlet pipeline 10 is arranged between the first-stage pipe network water supply pipeline 2 outside the inlet of the first valve 3 and the first-stage pipe network water return pipeline 8 outside the outlet of the second valve 5, the outlet of the first backwashing water inlet pipeline is connected with the outlet of the primary side of the heat exchanger body, and a fifth valve 11 is arranged on the first backwashing water inlet pipeline; the first backwashing water return pipeline 12 is arranged between the first-stage pipe network water supply pipeline 2 outside the first valve outlet and the first-stage pipe network water return pipeline outside the second valve outlet, the sixth valve 13 is arranged on the first backwashing water return pipeline, the inlet of the first backwashing water return pipeline is connected with the primary side inlet of the heat exchanger body, the first backwashing water return pipeline is connected with the inlet of a first filtering pool 14, the outlet of the first filtering pool is connected with the inlet of a liquid purification pool 15, a first water outlet pipeline 16 of the liquid purification pool is respectively connected with the first-stage pipe network water supply pipeline and the diode pipe network water supply pipeline, and the ninth valve 17 is arranged on the first water outlet pipeline 16. The clean liquid tank is used for storing relatively clean water discharged by the first filtering tank and the second filtering tank.
A second backwashing water inlet pipeline 18 is arranged between the second-stage pipe network water supply pipeline 6 outside the inlet of the third valve 7 and the diode pipe network water return pipeline 8 outside the inlet of the fourth valve 9, the outlet of the second backwashing water inlet pipeline is connected with the secondary side outlet of the heat exchanger body, and a seventh valve 19 is arranged on the second backwashing water inlet pipeline; a second backwashing water return pipeline 20 is arranged on a second-stage pipe network water return pipeline outside the outlet of the fourth valve and a second-stage pipe network water inlet pipeline outside the outlet of the third valve, the inlet of the second backwashing water return pipeline is connected with the secondary side inlet of the heat exchanger body, and an eighth valve 21 is arranged on the second backwashing water return pipeline; the outlet of the second backwashing water return pipeline is connected with the inlet of a second filtering tank 22, and the outlet of the second filtering tank 22 is connected with the inlet of the liquid purifying tank 15; a second water outlet pipeline 25 for discharging purified water is also arranged on the liquid purifying tank 15.
The heat exchanger with the back washing function also comprises a controller, wherein the controller is respectively electrically connected with a flowmeter, a press machine and a thermometer which are arranged on a water supply pipeline of the primary pipe network, and a pressure gauge and a thermometer which are arranged on a water return pipeline of the primary pipe network; the controller is respectively and electrically connected with a pressure gauge and a temperature gauge arranged on a water supply pipeline of the secondary pipe network, and the pressure gauge, the temperature gauge and a flow meter on a water return pipeline of the secondary pipe network; the controller controls the opening and closing of the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve respectively.
The controller is a PIC/STM controller.
The first filtering tank 14 and the second filtering tank 22 both comprise a tank body, a steel wire filter screen 23 is arranged in the middle of the tank body, and an activated carbon net 24 is supported on the inner wall of the tank body below the steel wire filter screen.
The filtering holes of the steel wire filtering net 23 are 2-3 mm; the activated carbon net 24 is fixed by a boss arranged on the inner side wall of the annular tank body, the activated carbon net can be clamped in a groove arranged on the surface of the boss, and can also be directly arranged on the table surface of the boss and pressed and fixed by a steel wire filter screen which is fixedly arranged on the inner side wall of the tank body above the activated carbon net.
The working principle is as follows: normal operation state, the primary side of the heat exchanger body 1: a first valve 3 on a primary pipe network water supply pipeline 2, a second valve 5 on a primary pipe network water return pipeline 4, a third valve 7 on a secondary pipe network water supply pipeline 6 and a fourth valve 9 on a secondary pipe network water return pipeline are all opened, and a fifth valve 11, a sixth valve 13, a seventh valve 21 and an eighth valve 19 are all closed; the flow direction of the primary pipe network is that water flows through a first valve, enters a primary side inlet C1 of the heat exchanger body, flows out of a primary side outlet C2 and enters a primary pipe network water return pipeline through a second valve; the flow direction of the secondary pipe network is that water flows through a third valve, enters a secondary side inlet H1, flows out of a secondary side outlet H2 and enters a secondary pipe network water return pipeline through a fourth valve. The controller is used for collecting the numerical values of the flowmeter, the manometer and the thermometer on the pipeline, so that the heat exchange condition is known in real time, and the control of the heat exchange condition is realized.
The back-washing operation state: the fifth valve 11, the sixth valve 13, the seventh valve 19 and the eighth valve 21 are opened, and the first valve 3, the second valve 5, the third valve 7 and the fourth valve 9 are closed; the flow direction of the primary pipe network is that water flows through a first backwashing water inlet pipeline, enters a primary side outlet C2 through a fifth valve, flows out of a primary side inlet C1, enters a first backwashing water return pipeline 12, and enters a first filtering tank through a sixth valve 13; the flow direction of the secondary pipe network is that water flows through a second backwashing water inlet pipeline 18, enters a secondary side outlet H2 through a seventh valve, flows out of a secondary side inlet H1, enters a second backwashing water return pipeline 20, and enters a second filtering tank through an eighth valve 19.
First, the dirt on the second filtering ponds can filter the backwashing in-process heat exchanger inside wall, holds back the backwashing thing of granule slightly bigger, and active carbon interception is filtered simultaneously, further promotes the filter effect, and the backwashing water after so filtering continues to get into liquid purification pond 15, can discharge or consider to continue to use under the condition that quality of water is up to standard.
The treated water after the first and second filtering ponds are settled is conveyed to a clean liquid pond 15 for collection, and in order to save energy and water, a first water outlet pipeline 16 on the clean liquid pond is divided into two branches and respectively conveyed to a first backwashing water inlet pipeline 10 and a second backwashing water inlet pipeline 18 in a backwashing state, so that the water supply amount of first-stage and second-stage pipe networks for supplying water during backwashing can be saved, and a semi-cycle backwashing effect is formed, which is favorable for improving the backwashing effect on the basis of saving water. The time period of back washing by utilizing the water in the liquid purifying tank is the middle period of a back washing period, the ninth valve 17 is kept closed in the early and later periods of back washing, only the water on the water supply pipelines of the first-stage pipe network and the second-stage pipe network is adopted for washing, and the back washing effect is ensured to the maximum extent.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (6)
1. A heat exchanger with a back washing function comprises a heat exchanger body, wherein a primary side inlet of the heat exchanger body is connected with a primary pipe network water supply pipeline, a first valve is arranged on the primary pipe network water supply pipeline, a primary side outlet of the heat exchanger body is connected with a primary pipe network water return pipeline, and a second valve is arranged on the primary pipe network water return pipeline; the secondary side inlet of the heat exchanger body is connected with a secondary pipe network water supply pipeline, a third valve is arranged on the secondary pipe network water supply pipeline, a secondary pipe network water return pipeline is connected with a secondary side outlet of the heat exchanger body, and a fourth valve is arranged on the secondary pipe network water return pipeline; a second backwashing water inlet pipeline and a second backwashing water return pipeline are also arranged on the secondary side of the heat exchanger body; and a first filtering tank and a second filtering tank are arranged outside the heat exchanger body, the inlet of the first filtering tank is connected with the first backwashing water return pipeline, the inlet of the second filtering tank is connected with the second backwashing water return pipeline, and the outlets of the first filtering tank and the second filtering tank are connected with the inlet of a liquid purifying tank through pipelines.
2. The heat exchanger with backwashing function according to claim 1, wherein a first backwashing water inlet pipeline is provided between a first stage pipe network water supply pipeline outside an inlet of the first valve and a first stage pipe network water return pipeline outside an outlet of the second valve, an outlet of the first backwashing water inlet pipeline is connected to a primary side outlet of the heat exchanger body, and a fifth valve is provided on the first backwashing water inlet pipeline; a first backwashing water return pipeline is arranged between a first-stage pipe network water supply pipeline outside the outlet of the first valve and a first-stage pipe network water return pipeline outside the outlet of the second valve, a sixth valve is arranged on the first backwashing water return pipeline, the inlet of the first backwashing water return pipeline is connected with the inlet of the primary side of the heat exchanger body, the first backwashing water return pipeline is connected with the inlet of the first filtering pool, the outlet of the first filtering pool is connected with the inlet of the purified liquid pool, the first water outlet pipeline of the purified liquid pool is respectively connected with the first-stage pipe network water supply pipeline and the diode pipe network water supply pipeline, and a ninth valve is arranged on the first water outlet pipeline;
a second backwashing water inlet pipeline is arranged between a second-stage pipe network water supply pipeline outside the inlet of the third valve and a diode network water return pipeline outside the inlet of the fourth valve, the outlet of the second backwashing water inlet pipeline is connected with the secondary side outlet of the heat exchanger body, and a seventh valve is arranged on the second backwashing water inlet pipeline; a second backwashing water return pipeline is arranged on the second-stage pipe network water return pipeline outside the outlet of the fourth valve and the second-stage pipe network water inlet pipeline outside the outlet of the third valve, the inlet of the second backwashing water return pipeline is connected with the secondary side inlet of the heat exchanger body, and an eighth valve is arranged on the second backwashing water return pipeline; an outlet of the second backwashing water return pipeline is connected with an inlet of the second filtering tank, and an outlet of the second filtering tank is connected with an inlet of the liquid purifying tank; a second water outlet pipeline for discharging the purified water is also arranged on the liquid purifying tank.
3. The heat exchanger with the back washing function according to claim 1 or 2, further comprising a controller, wherein the controller is electrically connected with a flow meter, a pressure machine and a thermometer which are arranged on a water supply pipeline of the primary pipe network and a pressure meter and a thermometer which are arranged on a water return pipeline of the primary pipe network respectively; the controller is respectively electrically connected with a pressure gauge, a flow meter and a temperature meter which are arranged on a water supply pipeline of the secondary pipe network, and the pressure gauge and the temperature meter on a water return pipeline of the secondary pipe network.
4. The heat exchanger with backwashing function of claim 3, wherein the controller is a PIC/STM controller.
5. The heat exchanger with back flushing function according to claim 1 or 2, wherein the first filtering tank and the second filtering tank each comprise a tank body, a steel wire filtering net is arranged in the middle of the tank body, and an activated carbon net is supported on the inner wall of the tank body below the steel wire filtering net.
6. The heat exchanger with the back flushing function according to claim 5, wherein the filtering holes of the steel wire filtering net are 2-3 mm; the activated carbon net is fixed by a boss arranged on the inner side wall of the annular tank body, and the steel wire filter screen is fixedly arranged on the inner side wall of the tank body above the activated carbon net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921001797.1U CN210346468U (en) | 2019-06-28 | 2019-06-28 | Heat exchanger with back flush function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921001797.1U CN210346468U (en) | 2019-06-28 | 2019-06-28 | Heat exchanger with back flush function |
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| Publication Number | Publication Date |
|---|---|
| CN210346468U true CN210346468U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921001797.1U Active CN210346468U (en) | 2019-06-28 | 2019-06-28 | Heat exchanger with back flush function |
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| CN (1) | CN210346468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361871A (en) * | 2020-10-27 | 2021-02-12 | 万江新能源集团有限公司 | Method for descaling plate heat exchanger |
-
2019
- 2019-06-28 CN CN201921001797.1U patent/CN210346468U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361871A (en) * | 2020-10-27 | 2021-02-12 | 万江新能源集团有限公司 | Method for descaling plate heat exchanger |
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