CN-224230376-U - Sewage heat recovery heating system of magnetic suspension heat pump

CN224230376UCN 224230376 UCN224230376 UCN 224230376UCN-224230376-U

Abstract

A sewage heat recovery heating system of a magnetic suspension heat pump comprises a sewage tank and a heat exchange station, wherein the heat exchange station comprises a magnetic suspension heat pump unit and a plate heat exchange recovery unit, the sewage tank is connected with the magnetic suspension heat pump unit, the magnetic suspension heat pump unit comprises a first magnetic suspension heat pump and a second magnetic suspension heat pump, the first magnetic suspension heat pump is connected with the second magnetic suspension heat pump, sewage waste heat is efficiently recovered by the magnetic suspension heat pump, heating energy efficiency is improved, and carbon emission is reduced. The double-stage heat pump operates in series, combines the plate heat exchange recovery group, realizes deep heat exchange, improves the COP value, and ensures stable operation and prevents overflow through linkage of the water pump group, the overflow valve and the electromagnetic valve. The magnetic suspension technology reduces mechanical friction, lowers maintenance cost and prolongs equipment life. The whole system is energy-saving, environment-friendly, intelligent, efficient and stable in operation, and can be widely applied to the field of building heating and industrial waste heat recovery.

Inventors

WU YANGUANG
ZHENG XIAOJUAN
Zhang Shenyin
Leng Wenxing
YU SHUISHENG
HUANG YINGXIANG

Assignees

雷茨智能装备(广东)有限公司

Dates

Publication Date: 20260512
Application Date: 20250508

Claims (10)

1. The sewage heat recovery heating system of the magnetic suspension heat pump is characterized by comprising a sewage tank and a heat exchange station, wherein the heat exchange station comprises a magnetic suspension heat pump unit and a plate heat exchange recovery unit, the sewage tank is connected with the magnetic suspension heat pump unit, the magnetic suspension heat pump unit comprises a first magnetic suspension heat pump and a second magnetic suspension heat pump, and the first magnetic suspension heat pump is connected with the second magnetic suspension heat pump.
2. The wastewater heat recovery heating system of a magnetic levitation heat pump according to claim 1, wherein the evaporator water outlet pipe of the first magnetic levitation heat pump is connected with the evaporator water inlet of the second magnetic levitation heat pump.
3. The sewage heat recovery heating system of a magnetic levitation heat pump according to claim 2, wherein an evaporator water outlet pipeline of the second magnetic levitation heat pump is connected with a sewage tank to form a heat circulation loop.
4. The sewage heat recovery heating system of a magnetic levitation heat pump according to claim 1, wherein a water pump set is arranged on a connecting pipeline between the sewage tank and the magnetic levitation heat pump set.
5. The wastewater heat recovery heating system of a magnetic levitation heat pump of claim 1, wherein the plate heat recovery group comprises a first plate change group and a second plate change group, the first plate change group being in series with the second plate change group.
6. The wastewater heat recovery heating system of a magnetic levitation heat pump according to claim 5, wherein the first plate change group comprises a first water supplementing tank, a first pre-plate change circulating pump and a first plate change circulating pump, the first water supplementing tank is connected with the first pre-plate change circulating pump, and the first pre-plate change circulating pump is connected with the first plate change circulating pump.
7. The wastewater heat recovery heating system of a magnetic levitation heat pump according to claim 6, wherein the second plate change group comprises a second water supplementing tank, a second pre-plate change circulating pump and a second plate change circulating pump, the second water supplementing tank is connected with the second pre-plate change circulating pump, and the second pre-plate change circulating pump is connected with the second plate change circulating pump.
8. The wastewater heat recovery heating system of a magnetic levitation heat pump according to claim 7, wherein the first water supplementing tank and the second water supplementing tank are connected with a reflux pipe, and the reflux pipe is connected with water inlets of condensers of the first magnetic levitation heat pump and the second magnetic levitation heat pump to form a condensation heat exchange circulation loop.
9. The sewage heat recovery heating system of a magnetic levitation heat pump according to claim 4, wherein the sewage tank is connected with an overflow pipe, and an overflow valve A is arranged on the overflow pipe.
10. A sewage heat recovery heating system of a magnetic levitation heat pump according to claim 3, wherein a solenoid valve C is arranged on a connecting pipeline between an evaporator water outlet pipeline of the second magnetic levitation heat pump and a sewage tank.

Description

Sewage heat recovery heating system of magnetic suspension heat pump Technical Field The utility model relates to the technical field of heat pump sewage heat recovery systems, in particular to a sewage heat recovery heating system of a magnetic suspension heat pump. Background In recent years, along with the continuous improvement of energy conservation, emission reduction and environmental protection requirements, the conventional sewage waste heat recovery system generally adopts a conventional heat pump or other heat exchange devices, and a large amount of recyclable low-temperature waste heat is contained in urban sewage, industrial waste water and domestic waste water, so that if the waste heat can be effectively recovered and used for heating, the energy consumption of conventional coal and gas heating can be greatly reduced, the energy utilization efficiency is improved, and the emission of greenhouse gases is reduced. In the field of waste heat recovery of sewage, in the prior art, the waste heat recovery device comprises a shell-and-tube heat exchanger, a plate heat exchanger and the like, and the shell-and-tube heat exchanger realizes preliminary heat recovery by utilizing indirect heat exchange between sewage and a heating medium. However, the tube is easy to scale due to suspended particles in the sewage, so that the heat exchange efficiency is reduced, the long-term operation and maintenance cost is higher, and the plate heat exchanger is widely applied to sewage waste heat recovery systems due to compact structure and high heat exchange efficiency. The plate heat exchanger is convenient to detach and clean, but the plate surface pollution problem caused by impurities in sewage is also faced, and periodic maintenance and optimal design are needed. The traditional vapor compression heat pump adopts a compressor circulation principle to absorb low-temperature heat energy from sewage, and releases high-temperature heat energy after compression, so that the heat pump is commonly used for heating and hot water preheating. Despite the high thermal efficiency, the equipment is sensitive to sewage impurities, which can lead to wear of the system and a decrease in energy efficiency. The absorption heat pump utilizes the absorption and desorption processes between the absorbent and the working medium to carry out heat energy conversion, and is suitable for waste heat utilization. Although the system structure is relatively simple, the initial investment and the operation energy consumption are high, and the requirement on the system stability is high. Meanwhile, under the low-temperature sewage environment, the efficiency of the traditional heat pump is obviously reduced, and particularly in winter or low-temperature areas, the COP (coefficient of performance) is lower, and the running cost is higher. The compressor has mechanical friction loss, the operation noise is larger, and the economy and the service life of equipment are affected. Disclosure of utility model In order to overcome the defects in the prior art, the utility model aims to provide a sewage heat recovery heating system of a magnetic suspension heat pump. The sewage heat recovery heating system of the magnetic suspension heat pump comprises a sewage tank and a heat exchange station, wherein the heat exchange station comprises a magnetic suspension heat pump unit and a plate heat exchange recovery unit, the sewage tank is connected with the magnetic suspension heat pump unit, the magnetic suspension heat pump unit comprises a first magnetic suspension heat pump and a second magnetic suspension heat pump, and the first magnetic suspension heat pump is connected with the second magnetic suspension heat pump. As a further improvement of the utility model, the water outlet pipe of the evaporator of the first magnetic suspension heat pump is connected with the water inlet of the evaporator of the second magnetic suspension heat pump. As a further improvement of the utility model, the evaporator water outlet pipeline of the second magnetic suspension heat pump is connected with the sewage tank to form a thermal circulation loop. As a further improvement of the utility model, a water pump set is arranged on a connecting pipeline between the sewage tank and the magnetic suspension heat pump unit. As a further improvement of the utility model, the plate heat exchange recovery unit comprises a first plate exchange unit and a second plate exchange unit, the first plate exchange unit being connected in series with the second plate exchange unit. The utility model further improves that the first plate changing group comprises a first water supplementing tank, a first pre-plate changing circulating pump and a first plate changing circulating pump, wherein the first water supplementing tank is connected with the first pre-plate changing circulating pump, and the first pre-plate changing circulating pump is connected with the first plate changing circul