CN211260950U

CN211260950U - Water mixing and heat exchange integrated unit

Info

Publication number: CN211260950U
Application number: CN202020019133.4U
Authority: CN
Inventors: 马小宇; 朱晓东; 杨海波; 刘俊超; 赵尊然; 武树峰; 杨顺利; 田方正; 石建兴
Original assignee: Zhengzhou Airport City Operation Co ltd
Current assignee: Zhengzhou Airport City Operation Co ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-08-14
Anticipated expiration: 2030-01-06

Abstract

The utility model relates to the field of heating systems, in particular to a water mixing and heat exchanging integrated unit, which comprises a primary net water supply unit, a primary net water return unit, a secondary net water supply unit, a secondary net water return unit and a heat exchanger, wherein the primary net water supply unit, the secondary net water return unit and the primary net water return unit are communicated with each other through pipelines to form a loop; the primary net water supply, the primary net water return, the secondary net water supply and the secondary net water return are respectively connected with the inlet and the outlet of the heat exchanger for heat exchange, the inlet and the outlet of the primary net of the heat exchanger are respectively provided with a ball valve I and a ball valve II, and the outlet and the inlet of the secondary net of the heat exchanger are respectively provided with a ball valve III and a ball valve IV; the outer ends of the ball valve I and the ball valve III and the outer ends of the ball valve II and the ball valve IV are connected in parallel with a water mixing pipe, a ball valve V and a ball valve VI are respectively arranged on the water mixing pipe, and the two water mixing pipes are connected with a pipeline through a ball valve VII; the secondary net water supply and the secondary net water return are also connected with a water circulating device; the utility model discloses the function is diversified, can multiple mode switch use, and is efficient.

Description

Water mixing and heat exchange integrated unit

Technical Field

The utility model relates to a heating system field especially relates to an integrative unit of water heat transfer mixes.

Background

With the improvement of living standard of people, the winter central heating becomes an indispensable part in modern life. At present, a heat exchange mode of a heat exchange station generally adopts a plate heat exchanger to realize heat exchange between a primary pipe network and a secondary pipe network. The plate heat exchanger is a high-efficiency heat exchanger formed by stacking a series of corrugated metal sheets, and has a heat transfer coefficient higher than that of a conventional shell-and-tube heat exchanger, but still has a plurality of defects. Firstly, the installation and maintenance time is long, and as the plate type heat exchange fins of the plate type heat exchanger are fixed by adopting the screw rods and keep certain pressure, the heat exchanger can be ensured not to leak under the condition of balanced pressure, and more labor cost is wasted during installation, removal and cleaning; secondly, the fault influence time is long, in the operation process of a heat supply season, the faults of the plate heat exchanger mainly include leakage and dirt blockage, and the time for replacing accessories or cleaning dirt is long after the heat exchange plates are detached; and thirdly, the application range is small, and when the heating load exceeds the capacity of the plate heat exchanger, the heating quality is reduced.

Disclosure of Invention

The utility model discloses an overcome prior art not enough, avoid heat transfer system work efficiency low, application scope little, and provide a mix integrative unit of water heat transfer, the utility model discloses the function is diversified, can multiple mode switch use, and is efficient.

The technical scheme of the utility model is realized like this: a water mixing and heat exchange integrated unit comprises a primary net water supply unit, a primary net water return unit, a secondary net water supply unit, a secondary net water return unit and a heat exchanger, wherein the primary net water supply unit, the secondary net water return unit and the primary net water return unit are communicated with one another through pipelines to form a loop;

the primary network water supply, the primary network backwater, the secondary network water supply and the secondary network backwater are respectively connected with the inlet and the outlet of the heat exchanger for heat exchange, the inlet and the outlet of the primary network of the heat exchanger are respectively provided with a ball valve I and a ball valve II, and the outlet and the inlet of the secondary network of the heat exchanger are respectively provided with a ball valve III and a ball valve IV; the outer ends of the ball valve I and the ball valve III and the outer ends of the ball valve II and the ball valve IV are connected in parallel with a water mixing pipe, a ball valve V and a ball valve VI are arranged on the water mixing pipe respectively, and the two water mixing pipes are connected with a pipeline through a ball valve VII;

and the secondary net water supply and the secondary net water return are also connected with a water circulating device.

Preferably, the water circulation device comprises a water supply circulation device, the water supply circulation device comprises a circulation pump I connected in parallel to the water supply of the secondary network, a butterfly valve I and a butterfly valve II are respectively connected in series to two sides of the circulation pump I, and a ball valve VIII is further arranged on the water supply main line of the secondary network.

Preferably, the water circulation device further comprises a return water circulation device, the return water circulation device comprises a circulation pump II connected in parallel to the return water of the second-level network, a butterfly valve III and a butterfly valve IV are respectively connected in series to two sides of the circulation pump II, and a ball valve IX is further arranged on the return water main line of the second-level network.

Preferably, the return water circulating device and the water supply circulating device are connected in parallel through a pipeline, and a ball valve X and a ball valve XI are respectively arranged on the parallel branch lines.

Preferably, a ball valve XII and a ball valve XIII are further respectively arranged on the branch line of the circulating pump I connected with the water supply main line of the secondary network in parallel.

Preferably, the water supply end of the primary net and the water return end of the secondary net are both provided with filters.

The utility model has the advantages that: the utility model has simple structure, diversified functions, and multiple modes switching, and can directly supplement circulating water from the primary network to the secondary network without installing a water supplementing system on the secondary network, thereby saving space; the switching between the water mixing heat exchange mode and the plate type heat exchange mode can be realized by opening or closing the valve, and the switching is convenient; if the plate heat exchanger fails, the mode can be quickly switched to a water mixing mode, so that the fault influence time is reduced; avoid the later stage because of the heat supply area increases, traditional plate heat exchanger can not satisfy the requirement and need change the shortcoming of equipment, can directly switch into muddy water heat transfer mode, increase heat supply area.

Drawings

Fig. 1 is a schematic structural diagram of the water mixing and heat exchanging integrated unit of the present invention.

Fig. 2 is a schematic structural view of a water circulation device (a in the figure) of the water mixing and heat exchanging integrated unit of the present invention.

Fig. 3 is a schematic structural view of the water supply circulation device of the water mixing and heat exchanging integrated unit of the present invention.

Fig. 4 is the structural schematic diagram of the water return circulating device of the water mixing and heat exchanging integrated unit of the utility model.

In the figure: 101-first-level net water supply, 102-first-level net water return, 103-second-level net water supply, 104-second-level net water return, 1-ball valve I, 2-ball valve II, 3-ball valve III, 4-ball valve IV, 5-ball valve V, 6-ball valve VI, 7-ball valve VII, 8-ball valve XII, 9-ball valve X, 10-ball valve XIII, 11-ball valve XI, 12-ball valve I, 13-ball valve III, 14-ball valve II, 15-ball valve IV, 16-ball valve VIII, 17-ball valve IX, 18-filter, 19-water mixing pipe, 20-circulating pump I, 21-circulating pump II, 22-heat exchanger.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable 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 invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: as shown in fig. 1-4, a water mixing and heat exchanging integrated unit comprises a primary network water supply 101, a primary network backwater 102, a secondary network water supply 103, a secondary network backwater 104 and a heat exchanger 22, wherein the primary network water supply 101, the secondary network water supply 103, the secondary network backwater 104 and the primary network backwater 102 are communicated in sequence through pipelines to form a loop; the water flows from the first-level network water supply 101 after being heated to the second-level network water supply 103, then is delivered to a heating user, flows to the second-level network backwater 104 after being heated by the user, is delivered to be heated, returns to the first-level network water supply 101 through the first-level network backwater 102, and is sequentially circulated to form user heating.

The primary network water supply 101, the primary network backwater 102, the secondary network water supply 103 and the secondary network backwater 104 are respectively connected with the inlet and the outlet of the heat exchanger 22 for heat exchange, the inlet and the outlet of the primary network of the heat exchanger 22 are respectively provided with a ball valve I1 and a ball valve II, and the outlet and the inlet of the secondary network of the heat exchanger 22 are respectively provided with a ball valve III 3 and a ball valve IV 4; the outer ends of the ball valves I1 and III 3, the outer ends of the ball valves II and IV 4 are connected with a water mixing pipe 19 in parallel, the ball valves V5 and VI 6 are installed on the water mixing pipe 19 respectively, the two water mixing pipes 19 are connected with a pipeline through the ball valves VII 7, and the above parallel connection and the installation of the ball valves can form the switching between a heat exchange operation mode and a water mixing operation mode. In the heat exchange operation mode, the ball valve V5, the ball valve VI 6 and the ball valve VII 7 are in a closed state, and the ball valve I1, the ball valve II 2, the ball valve III 3 and the ball valve IV 4 are in an open state, namely, water directly flows through the heat exchanger 22 from the primary network water supply 101 and is sent to the secondary network water supply 103 to reach a heating user, and secondary network return water flows through the heat exchanger 22 and is sent to the primary network return water 102. Another kind mixes water operational mode (promptly can switch into mixing water operational mode when situations such as heat exchanger 22 maintenance appear), ball valve V5, ball valve VI 6, ball valve VII 7 are the open mode, and ball valve I1, ball valve II 2, ball valve III 3, ball valve IV 4 are the closed condition, mixes water ephemeral no longer through heat exchanger 22, can supply heat exchanger 22 to maintain.

The secondary network water supply 103 and the secondary network backwater are also connected with a water circulating device, namely, water is conveyed to a user or forms backwater circulation through the water circulating device after heat exchange, so that normal work is ensured. The water circulation device comprises a water supply circulation device and a water return circulation device, the water supply circulation device can be used independently to ensure normal water circulation work, the water return circulation device can also be used independently to ensure normal water circulation work, the water supply circulation or the water return circulation can be used in a heat exchange operation mode, the water supply circulation or the water return circulation can be used in a water mixing operation mode, and a circulation mode can be selected.

The water supply circulating device comprises a circulating pump I20 connected in parallel on the secondary network water supply 103, a butterfly valve I12 and a butterfly valve II 14 are respectively connected in series on two sides of the circulating pump I20, a ball valve VIII 16 is further installed on the main line of the secondary network water supply 103, and a ball valve XII 8 and a ball valve XIII 10 are further respectively installed on branch lines of the circulating pump I20 connected in parallel with the main line of the secondary network water supply 103; the return water circulating device comprises a circulating pump II 21 connected in parallel to the secondary network return water 104, a butterfly valve III 13 and a butterfly valve IV 15 are respectively connected in series on two sides of the circulating pump II 21, and a ball valve IX 17 is further mounted on a main line of the secondary network return water 104; the water return circulating device is connected with the water supply circulating device in parallel through a pipeline, a ball valve X9 and a ball valve XI 11 are installed on a parallel branch line respectively, when a water supply circulating mode is adopted, the ball valve X9, the ball valve XI 11, a butterfly valve III 13, a butterfly valve IV 15 and a ball valve VIII 16 are closed, the ball valve XII 8, the ball valve XIII 10, the butterfly valve I12, the butterfly valve II 14 and the ball valve IX 17 are opened, at the moment, the circulating pump I20 works, namely water flows through the circulating pump I20, and water return passes through a main line provided with the circulating pump 17. When adopting the return water circulation mode, ball valve XII 8, ball valve XIII 10, ball valve IX 17 are closed, ball valve X9, ball valve XI 11, butterfly valve I12, butterfly valve III 13, butterfly valve II 14, butterfly valve IV 15, ball valve VIII 16 open, circulating pump I20, circulating pump II 21 all can work this moment, and circulating pump I20, circulating pump II 21 each other are reserve operation, supply water through the thread of installing 16, the return water is through circulating pump I20 or circulating pump II 21.

Filter 18 is all installed to one-level net 101 ends that supply water, second grade net return water 104 ends, prevents to block up, and certainly in site operation, the one-level net 101 ends that supply water, net supply water end, one-level net return water 102 ends, second grade net return water 104 ends all can install the ball valve according to normal construction requirement, and is unanimous with prior art simultaneously, still can install manometer, thermometer, different kinds of valve etc. to the demand of each part of pipeline, no longer details again.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an integrative unit of muddy water heat transfer which characterized in that: the system comprises a primary network water supply device, a primary network backwater device, a secondary network water supply device, a secondary network backwater device and a heat exchanger, wherein the primary network water supply device, the secondary network backwater device and the primary network backwater device are sequentially communicated through pipelines to form a loop;

2. The water mixing and heat exchanging integrated unit according to claim 1, characterized in that: the water circulation device comprises a water supply circulation device, the water supply circulation device comprises a circulation pump I connected in parallel to the water supply of the secondary network, a butterfly valve I and a butterfly valve II are respectively connected in series to the two sides of the circulation pump I, and a ball valve VIII is further arranged on the water supply main line of the secondary network.

3. The water mixing and heat exchanging integrated unit according to claim 2, characterized in that: the water circulation device further comprises a return water circulation device, the return water circulation device comprises a circulating pump II connected in parallel to the return water of the secondary network, a butterfly valve III and a butterfly valve IV are respectively connected to two sides of the circulating pump II in series, and an IX ball valve is further arranged on the return water main line of the secondary network.

4. The water mixing and heat exchanging integrated unit according to claim 3, characterized in that: the return water circulating device and the water supply circulating device are connected in parallel through a pipeline, and a ball valve X and a ball valve XI are arranged on the parallel branch lines respectively.

5. The water mixing and heat exchanging integrated unit according to claim 2, characterized in that: and a ball valve XII and a ball valve XIII are also respectively arranged on the branch line of the circulating pump I connected with the water supply main line of the secondary network in parallel.

6. The water mixing and heat exchanging integrated unit according to claim 1, characterized in that: and the primary net water supply end and the secondary net water return end are both provided with filters.