CN216409081U

CN216409081U - Composite heating unit

Info

Publication number: CN216409081U
Application number: CN202122621490.5U
Authority: CN
Inventors: 毛西湖
Original assignee: Shandong Fuwade Thermal Equipment Co ltd
Current assignee: Shandong Fuwade Thermal Equipment Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-29
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses a composite heating unit which comprises a plate heat exchanger, wherein a high-region water supply output port and a low-region water supply output port are formed in the top of the plate heat exchanger, a high-region water return input port is formed below the high-region water supply output port, a low-region water return input port is formed above the low-region water supply output port, and the low-region water return input port and the high-region water return input port are both formed in the top of the plate heat exchanger. The utility model provides central heating service by using a medium-temperature heat source, realizes the purpose of one machine with two purposes, saves cost and investment, reduces the operation and maintenance cost of machine rooms, can realize the effective regulation and control of a primary network of each heat exchange station room for a primary pipe network, ensures the distribution of the tail end flow of the primary pipe network and the hydraulic balance, can effectively reduce the power of the primary pipe network, and has the advantages of ingenious design, flexible structure and strong practicability.

Description

Composite heating unit

Technical Field

The utility model relates to the technical field of heating equipment, in particular to a composite heating unit.

Background

The heat exchange unit for heating is equipment for automatically and continuously converting heat obtained by a primary network into domestic water and heating water required by a user, namely hot water or steam enters the plate heat exchanger from a primary side inlet of the unit for heat exchange and then flows out from a primary side outlet of the unit; secondary side backwater enters the unit through a secondary side circulating water pump to carry out heat exchange, and hot water with different temperatures such as heating, air conditioning, floor heating or domestic water is produced to meet the requirements of users. Because of different consumption levels of users to heat energy under different periods of time and different temperature environments, most of the existing heating heat exchange units are provided with a temperature sensor on the primary side, the heat consumption of the secondary side is judged by detecting the temperature change of the primary side inlet and the primary side outlet, and finally the production efficiency of the heating boiler is adjusted by a control mechanism, so that the purpose of saving energy consumption is achieved. However, in practical use, the following disadvantages exist:

firstly, the method comprises the following steps: the secondary side of the heating heat exchange unit is usually connected with a plurality of heating users, the temperature difference of the return water end of different heating users is large due to the difference of geographical positions, pipeline installation, the number of radiating fins and the like, and at the moment, if a heating enterprise only meets users with high radiating efficiency, the temperature of a user end with low radiating efficiency is low, so that a large number of user complaints and claims can be caused; if the heating enterprise improves the production load, carries more heat energy to heating heat exchanger unit, though can satisfy the user's that the radiating efficiency is low heating demand, the user that the radiating efficiency is high can obtain unnecessary heat energy, causes unnecessary extravagant.

II, secondly: at present, the central heating is usually carried out by adopting a high-temperature heat source for heating and adopting a traditional heat exchange unit; secondly, a low-temperature heat source belonging to waste heat utilization is also widely applied in many places at present, and the adopted equipment is a high-rise supercharging heating unit (also called a high-rise direct connection heating unit). At present, no suitable product exists for a heat source in a middle temperature section between the two heat sources (one is a part with relatively low temperature of the heat source in a high-temperature heat source, if a traditional heat exchange unit is adopted, the heat exchanger is large due to low temperature of the heat source, the cost is high, meanwhile, because a primary heat source needs to be connected, the outlet water temperature of the primary heat source of the heat exchange unit is high, the pipe diameter of a primary pipe network is required to be large, so that the investment of the primary pipe network is increased, and the other is a part which is subjected to capacity-increasing and production-expanding transformation by utilizing the temperature of the heat source of a low-temperature heat source utilizing waste heat, so that a high-rise booster heating unit cannot be directly used after temperature rise).

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a composite heating unit.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a composite heating unit comprises a plate heat exchanger, wherein a high-region water supply output port and a low-region water supply output port are formed in the top of the plate heat exchanger, a high-region return water input port is formed below the high-region water supply output port, a low-region return water input port is formed above the low-region water supply output port, the low-region return water input port and the high-region return water input port are both formed in the top of the plate heat exchanger, a first-stage automatic intelligent circulating pump is installed on the high-region return water input port through a high-region return water pipe, a dirt remover is installed at one end of the first-stage automatic intelligent circulating pump through a first circulating pipe, a water supplementing pump is installed at one end of the first circulating pipe, a water supplementing tank is installed at one end of the water supplementing pump through a water supplementing pipe, a second-stage automatic intelligent circulating pump is installed at the low-region return water input port through a low-region return water pipe, and a voltage stabilizer is installed at one end of the second-stage automatic intelligent circulating pump through a second circulating pipe, the lower extreme of stabiliser is equipped with the motorised valve, one side of plate heat exchanger is provided with controlgear, the delivery port department of moisturizing pump is provided with the valve, plate heat exchanger, one-level automatic intelligent circulating pump, second grade automatic intelligent circulating pump, dirt separator, moisturizing pump, valve, motorised valve and stabiliser all with controlgear electrical connection.

Preferably, in order to realize automatic control, the plate heat exchanger, the primary automatic intelligent circulating pump, the secondary automatic intelligent circulating pump and other components are intelligently controlled through a control device, and the control device is a PLC control device.

Preferably, in order to facilitate the connection of the dirt separator and the primary automatic intelligent circulating pump, a secondary side inlet and a secondary side inlet are formed in one end of the dirt separator.

Preferably, in order to reduce the heat loss of the plate heat exchanger, an insulating layer is arranged on the plate heat exchanger.

Compared with the prior art, the utility model has the beneficial effects that:

1. through the effective matching of parts such as a high-area water supply output port, a low-area water supply output port and control equipment, the control equipment directly and intelligently controls the parts such as the plate heat exchanger, the primary automatic intelligent circulating pump, the secondary automatic intelligent circulating pump, the dirt remover, the water replenishing pump, the electric valve and the like, so that heat exchange and high-rise pressurization are directly connected with the heating pressure control and pressure stabilization device, and a medium-temperature heat source can be better utilized for providing central heating service;

2. the plate heat exchanger can achieve the purpose of one machine for two purposes by effectively matching the components such as the first-stage automatic intelligent circulating pump, the second-stage automatic intelligent circulating pump, the water replenishing pump and the like, can independently connect the high-region part and the low-region part of the same group of buildings, and can also independently connect the east-region part and the west-region part of the same group of buildings, so that the practicability is improved, the water outlet temperature of a primary heat source can be effectively reduced, the heat source is fully utilized, the investment of a primary network can be effectively reduced, and the distribution of the flow at the tail end of the primary network and the hydraulic balance are ensured;

in conclusion, the central heating system provided by the utility model provides a central heating service by using a medium-temperature heat source, realizes the purpose of one machine with two purposes, saves cost and investment, reduces the operation and maintenance cost of a machine room, can realize effective regulation and control of a primary network of each heat exchange station room for a primary pipe network, ensures the distribution of the flow at the tail end of the primary pipe network and the hydraulic balance, can effectively reduce the power of the primary pipe network, and has the advantages of ingenious design, flexible structure and strong practicability.

Drawings

Fig. 1 is a connection structure diagram of a composite heating unit according to the present invention;

FIG. 2 is an enlarged view of a portion A of the composite heating unit according to the present invention;

fig. 3 is a control schematic diagram of a hybrid heating unit according to the present invention.

In the figure: 1 plate heat exchanger, 2 high district water supply delivery outlets, 3 high district return water input ports, 4 first grade automatic intelligent circulating pumps, 5 dirt removers, 6 moisturizing pumps, 7 moisturizing boxes, 8 low district return water input ports, 9 low district water supply output ports, 10 second grade automatic intelligent circulating pumps, 11 stabiliser, 12 motorised valves, 13 controlgear, 14 valves, 15 secondary side input ports, 16 heat preservation.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

Referring to fig. 1-3, a composite heating unit comprises a plate heat exchanger 1, wherein the plate heat exchanger 1 has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like, the heat transfer coefficient of the composite heating unit is 3-5 times higher than that of a tubular heat exchanger under the condition of the same pressure loss, the occupied area is one third of that of the tubular heat exchanger, and the heat recovery rate can reach more than 90%.

In the utility model, a high-region water supply output port 2 and a low-region water supply output port 9 are arranged at the top of a plate heat exchanger 1, a high-region backwater input port 3 is arranged below the high-region water supply output port 2, a low-region backwater input port 8 is arranged above the low-region water supply output port 9, both the low-region backwater input port 8 and the high-region backwater input port 3 are arranged at the top of the plate heat exchanger 1, high-region system backwater obtains circulating power and flows into a secondary side input port 15 after the circulating power is obtained by the high-region system backwater, the water temperature rises after the heat energy is obtained from the plate heat exchanger 1, the heat energy enters terminal heat dissipation equipment of a high-region part of a building through the high-region water supply output port 2 to transfer the heat energy to the building, the circulating water of the system returns to a unit through the high-region backwater input port 3 after the temperature is reduced, the unit continues to be heated and enters the next cycle of heat absorption and heat release and temperature reduction, the heat source obtains the circulating power and rises with a certain pressure after the heat source is cooled to a proper temperature, from the terminal heat-dissipating equipment of low district water supply delivery outlet 9 entering building low district, give the building with heat energy transfer, get back to the unit through low district return water input port 8 after the system circulation water temperature step-down, after the decompression pressure regulating, get back to the first station and acquire the heat energy intensification and become the circulation supply to individual heat transfer computer lab after the heat source, the circulation heat supply, make plate heat exchanger 1 can realize a quick-witted dual-purpose, both can independent high district part of connecting same crowd of building, low district part, also can independent connect the east district part of same crowd of building, the west district part, the high practicality is improved.

According to the utility model, a primary automatic intelligent circulating pump 4 is installed on a high-region return water input port 3 through a high-region return water pipe, the primary automatic intelligent circulating pump 4 can be used for providing circulating power, a dirt separator 5 is installed at one end of the primary automatic intelligent circulating pump 4 through a first circulating pipe, the dirt separator 5 can be used for filtering solid impurities in high-region return water, a secondary side input port 15 is formed at one end of the dirt separator 5, a water replenishing pump 6 is installed at one end of the first circulating pipe, and the water replenishing pump 6 can be used for stabilizing water pressure in the high region.

In the utility model, a low-region backwater input port 8 is provided with a second-stage automatic intelligent circulating pump 10 through a low-region backwater pipe, the second-stage automatic intelligent circulating pump 10 can be used for providing circulating power, one end of the second-stage automatic intelligent circulating pump 10 is provided with a voltage stabilizer 11 through a second circulating pipe, the voltage stabilizer 11 can be used for stabilizing the water pressure of the low region, the high-region system backwater obtains the circulating power through a first-stage automatic intelligent circulating pump 4, is pumped into a dirt separator 5 through a secondary side input port 15 to filter solid impurities and enters a high-region backwater input port 3, the water temperature rises after obtaining heat energy from a plate heat exchanger 1, enters the tail end heat dissipation equipment of the high-region part of the building through a high-region water supply output port 2 to transfer the heat energy to the building, the temperature of the system circulating water is reduced and then returns to the plate heat exchanger 1 through the high-region backwater input port 3 to continue to raise the temperature and enter the next heat absorption and release circulation process, the heat source is cooled to a proper temperature through heat exchange, then obtains circulating power and certain pressure through a secondary automatic intelligent circulating pump 10, the circulating power and certain pressure rise enters a low-region return water input port 8, the low-region water is output through a low-region water supply output port 9 and enters terminal heat dissipation equipment in a low region of a building, heat energy is transmitted to the building, the temperature of system circulating water is lowered, then the system circulating water returns to a voltage stabilizer 11 through the low-region return water input port 8, the system circulating water enters a heat source return water pipe network from a heat source return water port after being subjected to pressure reduction and pressure regulation, the system circulating water returns to a first station, obtains the heat energy, is heated and becomes the heat source, and then is circularly supplied to a heat exchange machine room, and heat is circularly supplied.

In the utility model, one end of a water supply pump 6 is provided with a water supply tank 7 through a water supply pipe, the water supply tank 7 is provided with an automatic system, the liquid level can be controlled without pressure, the lower end of a voltage stabilizer 11 is provided with an electric valve 12, a control device 13 automatically controls the start and stop of the water supply pump 6 by measuring the pressure at the high-region system backwater position so as to maintain the pressure of the high-region system to be stable, when the measured pressure at the high-region system backwater position is lower than a set value and the liquid level of the water supply tank 7 is higher than a set height, the water supply pump 6 is started to work until the set value is reached, and when the low-region stops running, the electric valve 12 is closed.

In the utility model, one side of the plate heat exchanger 1 is provided with a control device 13, the control device 13 is a PLC control device, the PLC control device is a novel industrial control device of a generation formed by introducing a microelectronic technology, a computer technology, an automatic control technology and a communication technology on the basis of a traditional sequence controller, and is used for replacing sequential control functions of a relay, an execution logic, a time recording, a counting and the like, a flexible remote control system is established, and the device has the characteristics of strong universality, convenience in use, wide application range, high reliability, strong anti-interference capability, simple programming and the like, a valve 14 is arranged at a water outlet of the water replenishing pump 6, the plate heat exchanger 1, a primary automatic intelligent circulating pump 4, a secondary automatic intelligent circulating pump 10, a dirt remover 5, the water replenishing pump 6, the valve 14, an electric valve 12 and a voltage stabilizer 11 are electrically connected with the control device 13, and the control device 13 directly and intelligently controls the plate heat exchanger 1, Parts such as one-level automatic intelligent circulating pump 4, second grade automatic intelligent circulating pump 10, dirt separator 5, moisturizing pump 6, motorised valve 12 for heat transfer and high-rise pressure boost directly link heating accuse pressure stabilizer, and the medium temperature heat source that can be better utilizes serves for central heating.

Example 2

In the utility model, the heat-insulating layer 16 is arranged on the plate heat exchanger 1, and the heat loss of the plate heat exchanger 1 is reduced through the heat-insulating layer 16, so that the energy consumption is reduced.

Compared with embodiment 1, the present embodiment reduces the heat dissipation speed through the insulating layer 16, and saves the cost.

In the utility model, when in use, the control device 13 measures the pressure of the high-region system backwater to intelligently and automatically control the start and stop of the water replenishing pump 6 so as to maintain the pressure of the high-region system to be stable, when the measured pressure of the high-region system backwater is lower than a preset value and the liquid level of the water replenishing tank 7 is higher than a safe height, the control device 13 immediately controls the water replenishing pump 6 to start and stop until the pressure reaches a set value, the high-region system backwater obtains circulating power through the primary automatic intelligent circulating pump 4, is pumped into the dirt separator 5 through the secondary side inlet 15 to filter solid impurities and enters the high-region backwater inlet 3, the water temperature rises after obtaining heat energy from the plate heat exchanger 1, enters the tail end heat dissipation device of the high-region part of the building through the high-region water supply outlet 2 to transfer the heat energy to the building, and the circulating water of the system returns to the plate heat exchanger 1 through the high-region backwater inlet 3 after reducing the temperature, and continuously heating, entering the next heat absorption and heat release circulation process, obtaining circulation power and certain pressure rise by a heat source through a secondary automatic intelligent circulating pump 10 after the heat source is cooled to a proper temperature through heat exchange, entering a low-region return water input port 8, then outputting the heat energy to enter terminal heat dissipation equipment in a low region of the building through a low-region water supply output port 9, transferring the heat energy to the building, returning the system circulating water with the lowered temperature to a voltage stabilizer 11 through the low-region return water input port 8, reducing the pressure and regulating the pressure, entering a heat source return water pipe network from a heat source return water port, returning to the first station, obtaining the heat energy, heating the heat energy, changing the heat energy into the heat source, circularly supplying the heat energy to a heat exchange machine room, and circularly supplying the heat.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a compound heating unit, includes plate heat exchanger (1), its characterized in that: the plate heat exchanger is characterized in that a high-region water supply output port (2) and a low-region water supply output port (9) are formed in the top of the plate heat exchanger (1), a high-region water return input port (3) is formed below the high-region water supply output port (2), a low-region water return input port (8) is formed above the low-region water supply output port (9), the low-region water return input port (8) and the high-region water return input port (3) are both formed in the top of the plate heat exchanger (1), a first-stage automatic intelligent circulating pump (4) is installed on the high-region water return input port (3) through a high-region water return pipe, a dirt remover (5) is installed on one end of the first-stage automatic intelligent circulating pump (4) through a first circulating pipe, a water replenishing pump (6) is installed on one end of the first circulating pipe, a water replenishing tank (7) is installed on one end of the water replenishing pump (6), a second-stage automatic intelligent circulating pump (10) is installed on the low-region water return input port (8) through the low-region water return pipe, stabiliser (11) are installed through the second circulating pipe to the one end of second grade automatic intelligent circulating pump (10), the lower extreme of stabiliser (11) is equipped with motorised valve (12), one side of plate heat exchanger (1) is provided with controlgear (13), the delivery port department of moisturizing pump (6) is provided with valve (14), plate heat exchanger (1), one-level automatic intelligent circulating pump (4), second grade automatic intelligent circulating pump (10), dirt separator (5), moisturizing pump (6), valve (14), motorised valve (12) and stabiliser (11) all with controlgear (13) electrical connection.

2. The hybrid heating unit according to claim 1, wherein: the control equipment (13) is PLC control equipment.

3. The hybrid heating unit according to claim 1, wherein: and one end of the dirt separator (5) is provided with a secondary side input port (15).

4. The hybrid heating unit according to claim 1, wherein: and a heat insulation layer (16) is arranged on the plate heat exchanger (1).