CN210740506U - Heat exchange unit - Google Patents
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- CN210740506U CN210740506U CN201921588236.6U CN201921588236U CN210740506U CN 210740506 U CN210740506 U CN 210740506U CN 201921588236 U CN201921588236 U CN 201921588236U CN 210740506 U CN210740506 U CN 210740506U
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Abstract
The utility model discloses a heat exchange unit, which comprises a first heat exchange module for supplying heat to a first type of users at a first preset pressure and a second heat exchange module for supplying heat to a second type of users at a second preset pressure; the first heat exchange module and the second heat exchange module respectively comprise a primary side pipeline for heat source water circulation, a secondary side pipeline for user heating water circulation and a heat exchanger for heat exchange of the primary side pipeline and the secondary side pipeline; the device also comprises a booster pump connected to the primary side pipeline. The heat exchange unit can balance the heating pressure of the system, avoid hydraulic imbalance caused by small pressure heads, and adapt to the heating requirements of users under various conditions.
Description
Technical Field
The utility model relates to a heating equipment technical field, in particular to heat exchange unit.
Background
The central heating is an important sign of urban modernization, is an important measure for saving energy and improving environment, and with the continuous development of heating industry, the majority of users put forward higher requirements on the stability and the quality of heating. The heat exchange heat unit is a main body of the heat exchange station, has good environmental protection performance, low running noise of the whole unit, simple and convenient operation, safety and reliability.
The heat exchange heat unit is a complete set of regional heat supply control equipment integrating a heat exchanger, a circulating pump, a water replenishing pump, a thermometer, a pressure gauge, various sensors, pipelines, valves and industrial control, and is additionally provided with a water replenishing system, a pressure stabilizing system, a variable frequency flow control system and a heat metering and network communication control system.
The heat exchange heat unit automatically and continuously converts the heat on the primary side into domestic water and heating water required by a user. Namely, hot water (or steam) enters the heat exchanger from the primary side inlet of the unit for heat exchange and then flows out from the primary side outlet of the unit; and after dirt of secondary side backwater is removed through a filter, the secondary side backwater enters the plate type heat exchanger through a secondary side circulating water pump to carry out heat exchange, and hot water with different temperatures for heating, air conditioning or floor heating and the like is produced to meet the requirements of users. However, the existing heat exchange unit cannot adapt to extreme changes of the outside, and when the heating demand sharply increases or drops, the heating pressure is unbalanced, so that the heating demand of all users cannot be met. In addition, heating pressure imbalance in mountainous areas with complex terrain or floors with different heights also influences heating experience of users.
Therefore, how to solve the problem that the heat exchanger unit heating pressure is unbalanced and cannot be matched with the heating demand of the user becomes a technical problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a heat exchange unit, this heat exchange unit can balanced system heating pressure, avoids the pressure head to arouse the water conservancy imbalance for a short time, adapts to the user heating demand under the various conditions.
To achieve the above object, the present invention provides a heat exchanger unit, comprising a first heat exchange module for supplying heat to a first type of users at a first preset pressure, and a second heat exchange module for supplying heat to a second type of users at a second preset pressure;
the first heat exchange module and the second heat exchange module respectively comprise a primary side pipeline for heat source water circulation, a secondary side pipeline for user heating water circulation and a heat exchanger for heat exchange of the primary side pipeline and the secondary side pipeline;
the device also comprises a booster pump connected to the primary side pipeline.
Optionally, the primary side pipeline includes a primary side water inlet pipe and a primary side water return pipe connected to the primary side water inlet pipe, and the secondary side pipeline includes a secondary side water inlet pipe and a secondary side water return pipe connected to the secondary side water inlet pipe; the pressure pump is arranged at the position, close to the heat exchanger, of the primary side water return pipe.
Optionally, the pressure pump is a variable frequency pressure pump, and the heat exchanger is a plate heat exchanger.
Optionally, a connecting pipeline is arranged between the primary side water inlet pipe and the secondary side pipeline, and a return water connecting pipe is arranged between the primary side return water pipe and the secondary side pipeline;
the connecting pipeline is provided with a control valve for controlling the connection and the disconnection of the connecting pipeline, the backwater connecting pipe is provided with a backwater valve for controlling the connection and the disconnection of the backwater connecting pipe, and the primary side pipeline and the secondary side pipeline are both provided with isolation valves for isolating the heat exchanger;
the control valve is used for being opened when the heating water heat load of the secondary side pipeline is insufficient, and the water return valve is used for being opened when the heating water pressure of the secondary side pipeline exceeds a preset value.
Optionally, the control valve, the water return valve and the isolation valve are all electrically operated valves, and the control mechanism is connected with the control valve, the water return valve and the isolation valve for operation.
Optionally, the system further comprises an automatic water replenishing system connected with the secondary side pipeline and used for replenishing water to the secondary side pipeline when the secondary side pipeline is insufficient in heating water.
Optionally, the automatic water replenishing system includes a water replenishing pipeline connected to the secondary side pipeline and a water replenishing tank supplying water to the water replenishing pipeline, and valves are disposed between the water replenishing tank and the water replenishing pipeline, and between the water replenishing pipeline and the secondary side pipeline.
Optionally, the water supply system further comprises a primary side water discharge pipe for supplying water to the primary side water inlet pipe and recovering water discharged from the primary side water return pipe;
a primary side water separator is arranged between the primary side water supply pipe and the primary side water inlet pipe, and a primary side water collector is arranged between the primary side water return pipe and the primary side water outlet pipe.
Optionally, the primary side water supply pipe is provided with a filtering sewage discharge device.
Optionally, the automatic water supply system is connected to the primary side water discharge pipe and configured to supply the primary side water discharge pipe with return water when a return water flow of the primary side water discharge pipe is smaller than a water supply flow of the primary side water supply pipe.
Compared with the prior art, the utility model provides a heat exchange unit includes first heat exchange module and second heat exchange module, and wherein, first heat exchange module and second heat exchange module are used for supplying heat to different grade type users through different preset pressure respectively, need to explain that, here first class user and second class user's division standard mainly depend on the floor height or the height that heating water needs to reach. For example, users below 10 floors or users below 40 meters in floor height may be classified as a first class of users, and users above 10 floors or users above 40 meters in floor height may be classified as a second class of users.
Obviously, at this time, the corresponding first preset pressure is smaller than the second preset pressure, and the first preset pressure and the second preset pressure, and the first class users and the second class users can be correspondingly and flexibly adjusted according to actual conditions. Through dividing heat exchange unit into different heat exchange module, heat respectively to the user of different types, avoid under extreme situation, or under the very big situation of heating demand, heating pressure is unbalanced, and the unable heating that reaches of high-rise user can't reach the anticipated heating requirement and cause the heating unbalance.
The first heat exchange module and the second heat exchange module respectively comprise a primary side pipeline and a secondary side pipeline, and further comprise heat exchangers for performing heat exchange on the primary side pipeline and the secondary side pipeline; the primary side pipeline is used as a heat source pipeline for supplying heat source water to circulate, the secondary side pipeline is used as a user pipeline for supplying heating water to circulate, and the heat source water transfers heat to the heating water through the heat exchanger to reach a user for heating; in order to improve the capacity of the heat exchange unit for dealing with extreme conditions, a pressure pump is further arranged in the primary side pipeline, and when the heating demand is increased or the heating pressure is unbalanced, the pressure of the heat source water is adjusted in real time through the pressure pump, the heating effect is improved, and the heating demand is balanced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a heat exchanger unit according to an embodiment of the present invention;
FIG. 2 is an enlarged view of the first heat exchange module of FIG. 1;
fig. 3 is an enlarged view of the second heat exchange module of fig. 1.
Wherein:
1-a first heat exchange module, 2-a second heat exchange module, 3-a heat exchanger, 4-a pressure pump, 5-a primary side pipeline, 51-a primary side water inlet pipe, 52-a primary side water return pipe, 6-a secondary side pipeline, 61-a secondary side water inlet pipe, 62-a secondary side water return pipe, 7-a primary side water supply pipe, 8-a primary side water discharge pipe, 9-a connecting pipeline, 91-a control valve, 10-a water supply tank, 11-a water supply pipeline, 12-a primary side water separator, 13-a primary side water collector, 14-a filtering and pollution discharging device, 15-a water return connecting pipe, 151-a water return valve, 16-an isolation valve, 17-a bypass pipeline and 171-a bypass valve.
Detailed Description
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.
The heat exchange unit is a unit which is connected with a heat source and a user to realize heat exchange between the heat source and the user side so as to supply heat to the user. The heat source end or the pipeline connecting the heat source end is called as the primary side, the user end is called as the secondary side, and the heat source end is generally hot water from a boiler room or waste heat of a thermal power plant.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 3, fig. 1 is a schematic view of a heat exchanger unit according to an embodiment of the present invention, fig. 2 is an enlarged view of a first heat exchange module in fig. 1, and fig. 3 is an enlarged view of a second heat exchange module in fig. 1. In the drawings, the arrow direction only indicates the water flow direction, and the connection between the heat exchanger 3 and the primary side pipeline 5 and the secondary side tube furnace 6 and the series connection of various valves in fig. 2 and 3 are conventional technical means, and are not described one by one.
The utility model provides a heat exchange unit includes two heat transfer modules: the heat exchanger comprises a first heat exchange module 1 and a second heat exchange module 2, wherein the first heat exchange module 1 supplies heat to a first type of user at a first preset pressure, and the second heat exchange module 2 supplies heat to a second type of user at a second preset pressure. The criteria for the division of the first and second type of users are mainly dependent on the floor level or the level to which the heating water is to be supplied. For example, users below 10 floors or users below 40 meters in floor height may be classified as a first class of users, and users above 10 floors or users above 40 meters in floor height may be classified as a second class of users.
Obviously, the first preset pressure corresponding to the first type of user is smaller than the second preset pressure corresponding to the second type of user; in general, the first preset pressure may be set to 0.4MPa and the second preset pressure to 0.65 MPa. Of course, the first preset pressure and the second preset pressure can be flexibly adjusted according to the division standard of the first type of users and the second type of users and the actual heating requirement.
Through dividing heat exchange unit into different heat exchange module, heat respectively to the user of different types, avoid under extreme situation, or under the very big situation of heating demand, heating pressure is unbalanced, and the unable heating that reaches of high-rise user can't reach the anticipated heating requirement and cause the heating unbalance.
The first heat exchange module 1 and the second heat exchange module 2 both comprise a primary pipeline 5 and a secondary pipeline 6, and the primary pipeline 5 and the secondary pipeline 6 exchange heat through the heat exchanger 3. The heat exchange here mainly refers to indirect heat exchange between the primary-side pipeline 5 and the secondary-side pipeline 6, that is, the heat source water of the primary-side pipeline 5 and the heating water of the secondary-side pipeline 6 do not meet, and only heat conduction and heat convection heat exchange are performed through the heat exchanger 3. The structures between the first heat exchange module 1 and the second heat exchange module 2 may be referred to each other.
In order to improve the capacity of the heat exchange unit for dealing with extreme conditions, a heating pump is further arranged in the primary side pipeline 5, and when the heating demand is increased or the heating pressure is unbalanced, the pressure of the heat source water is adjusted in real time through the pressure pump 4, so that the heat exchange efficiency of the heat exchanger 3 is improved, the heating effect is improved, and the heating demand is balanced.
The heat exchanger assembly provided by the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments.
The utility model provides an in a concrete embodiment, two heat exchange module of the first heat exchange module 1 of heat exchange unit and 2 of second heat exchange module, two heat exchange module all include side pipeline 5 once, secondary side pipeline 6 and heat exchanger 3, side pipeline 5 supplies the circulation of heat supply water once, secondary side pipeline 6 supplies the circulation of heat supply water, heat supply water and heating water take place the heat transfer on 3 surfaces of heat exchanger, give the heating water with the heat transfer of heat supply water, the heat supply water is defeated to be heated to the user, heat exchanger 3 adopts plate heat exchanger usually, plate heat exchanger is favorable to improving the heat transfer area who inclines pipeline 5 and secondary side pipeline 6 once, and then improve heat exchange efficiency. The first heat exchange module 1 and the second heat exchange module 2 adopt different heating pressures for different users. Obviously, a third heat exchange module can be arranged according to actual needs.
For example, the first heat exchange module 1 uses a lower first preset pressure (e.g. 0.4MPa) to supply heat to the first type of users (low-level users), the second heat exchange module 2 uses a higher second preset pressure (0.65MPa) to supply heat to the second type of users (high-level users), and the first type of users and the second type of users and the first preset pressure and the second preset pressure can be flexibly adjusted correspondingly. In this embodiment, a pressure pump 4 is additionally provided in the primary-side pipeline 5 to adjust the heating pressure at appropriate time and balance the heating demand.
The structure of the first heat exchange module 1 can refer to fig. 1 and fig. 2, wherein the primary side pipeline 5 of the first heat exchange module 1 includes a primary side water inlet pipe 51 and a primary side water return pipe 52 connected to the primary side water inlet pipe 51, heat source water flows to the heat exchanger 3 through the primary side water inlet pipe 51 to exchange heat, the water after heat exchange is recovered through the primary side water return pipe 52, the secondary side pipeline 6 of the first heat exchange module 1 includes a secondary side water inlet pipe 61 and a secondary side water return pipe 62 connected to the secondary side water inlet pipe 61, water in the secondary side water return pipe 62 flows to the heat exchanger 3 to exchange heat with the heat exchanger 3, the temperature is increased, and the water flows to a user.
In order to adjust the heating pressure timely and avoid the imbalance of the secondary side flow and the heating pressure caused by the insufficient secondary side heat load, the primary side pipeline 5 is also provided with the booster pump 4, the flow and the pressure of the primary side pipeline 5 are adjusted through the heating pump, the heat load of the primary side is improved, the requirements of the secondary side and the heat exchanger 3 on the heat load are met, and the heating pressure of the secondary side is ensured. The pressure pump 4 is generally provided at a connection point between the heat exchanger 3 and the primary-side water return pipe 52, and the primary-side water supply pressure and the primary-side water supply flow rate are adaptively changed by adjusting the return water pressure, but it is also possible to provide the pressure pump 4 at a position of the primary-side water inlet pipe 51 close to the heat exchanger 3. And the booster pump 4 preferably adopts a variable frequency booster pump, and the pressure regulating requirements under various working conditions are met.
Referring to fig. 1 and 3, the structure of the second heat exchange module 2 is shown, wherein the primary-side pipeline 5 of the second heat exchange module 2 similarly includes a primary-side water inlet pipe 51 and a primary-side water return pipe 52 connected to the primary-side water inlet pipe 51, the secondary-side pipeline 6 also includes a secondary-side water inlet pipe 61 and a secondary-side water return pipe 62 connected to the secondary-side water inlet pipe 61, and the primary-side pipeline 5 and the secondary-side pipeline 6 exchange heat through the heat exchanger 3. The pressure difference between the first heat exchange module 1 and the second heat exchange module 2 can be adjusted by the circulating pump of the secondary side pipeline 6, and the pressure pump 4 on the primary side is also correspondingly adjusted to meet the matching of heat load.
The existing heat exchange unit generally adopts a mode of indirect heat exchange between a primary side pipeline 5 and a secondary side pipeline 6, so-called indirect heat exchange means that the primary side pipeline 5 and the secondary side pipeline 6 are communicated, namely heat source water and heating water are not intersected, and the heat source water and the heating water are conducted and convected only through a heat exchanger 3. Under extreme weather conditions, the heating mode is difficult to satisfy the heating demand. For this reason, the utility model provides a heat exchange unit is still including connecting the connecting tube 9 that once inclines inlet tube 51 and secondary side pipeline 6, and connecting tube 9 is equipped with control valve 91, can carry out direct heating according to actual need, also the direct heat supply to the user through secondary side pipeline 6 of heat source water. Of course, when the primary-side pipeline 5 directly supplies water to the secondary-side pipeline 6, the water does not need to pass through the heat exchanger 3, so that the isolating valves 16 are arranged at the positions where the primary-side pipeline 5 and the secondary-side pipeline 6 are connected with the heat exchanger 3, and the heat exchanger is isolated by the isolating valves 16.
The mode of combining direct heating and indirect heating can also be adopted, namely, when the heat source water of the primary side pipeline 5 and the heating water of the secondary side pipeline 6 exchange heat in the heat exchanger 3, the heat source water of the primary side water inlet pipe 51 is simultaneously injected into the secondary side pipeline 6, so that the problem of heating water is improved, and the heating effect is improved. The heating load ratio of the direct heating and the indirect heating can be adjusted by adjusting the opening degrees of the control valve 91 and the isolation valve 16 according to actual needs.
When the heating demand is not high, the heating can be carried out by adopting a self-circulation mode of the secondary side pipeline 6, if the outdoor temperature is higher in the daytime, the heating is carried out by opening, the mixed heating is carried out, the secondary network, namely the heat in the secondary side pipeline 6, is self-circulated, the secondary network is kept to operate at the set temperature, and the self heat load in the network is consumed. When the temperature in the secondary network reaches the lower limit of the set temperature, the primary network, that is, the heat of the primary side pipeline 5, supplies heat to the secondary network again, so that the purpose of saving energy can be achieved, the primary side pipeline 5 can supply heating water to the secondary side pipeline 6 periodically or exchange heat at intervals, and when the secondary side pipeline 6 circulates automatically, the secondary side water inlet pipe 61 and the secondary side water return pipe 62 are directly communicated through the bypass pipeline 17 to form a loop and are controlled to be communicated and closed through the bypass valve 171.
In any of the above heating methods, when heating water enters the primary-side pipeline 5 into the secondary-side pipeline 6, the amount of heating water and the water pressure in the secondary-side pipeline 6 are increased, so that a return water connecting pipe 15 and a return water valve 151 for controlling the passage and closing of the return water connecting pipe 15 need to be arranged between the secondary-side pipe 6 and the primary return water pipe 52; when the primary-side pipeline 5 and the secondary-side pipeline 6 exchange heat through the heat exchanger 3, the water pressure of the secondary-side pipeline 6 is basically unchanged, the water return valve 151 is closed, when the control valve 91 is opened, that is, direct supply or mixed supply is adopted, the pressure of the secondary-side pipeline 6 is increased, and when the pressure exceeds a preset value (normal value), the water return valve 151 is opened. The control valve 91, the return valve 151, the isolation valve 16 and the bypass valve 171 may be electrically operated or pneumatically operated valves, and are cooperatively driven by a control mechanism to switch different heating modes, thereby improving heating efficiency. The control mechanism can be connected with a temperature and pressure sensor for detecting the heating water in the secondary side pipeline 6, the opening or conduction states of the control valve 91, the water return valve 151, the isolation valve 16 and the bypass valve 171 are switched in time according to real-time heat load, heating in different modes is realized, the control mechanism can be flexibly set by adopting a computer, a PLC (programmable logic controller), a single chip microcomputer or referring to the prior art, the heating mode is switched according to a pre-stored heating load value, the control mechanism is not a point of improvement of the application, and repeated description is not provided herein.
The heat exchange unit realizes three different heating modes of direct heating, indirect heating and mixed heating through the connecting pipeline 9, the backwater connecting pipe 15, the control valve 91, the backwater valve 151 and the isolating valve 16, the heating mode is adjusted according to actual heating requirements, the heating efficiency is improved, and balanced heating can be realized under any environment or condition. The arrangement of the control mechanism improves the switching efficiency of the heating mode.
When the secondary side pipeline 6 supplies heat to a user, a complex heating pipeline along the way is inevitably leaked due to various reasons, so that the flow of heating water is reduced, and the pressure of the heating water and the heat load are reduced; for balanced heating pressure, guarantee the heating heat load, the utility model provides a heat exchange unit still includes automatic water supply system, and when the heating discharge among secondary side pipeline 6 descends and pressure reduction, automatic water supply system carries out automatic water supply to the secondary pipeline, maintains heating water pressure and flow, guarantees the heating heat load. When the water supply system is in fault and stops supplying water, the primary network by-pass pipe can directly supply water to the secondary network to keep the pressure in the secondary network, and the arrangement of the primary network by-pass pipe refers to the existing heat exchange system and is not described again.
The automatic water supplementing system comprises a water supplementing pipeline 11 connected with the secondary side pipeline 6 and a water supplementing tank 10 providing a water source for the water supplementing pipeline 11, wherein valves are arranged between the water supplementing tank 10 and the water supplementing pipeline 11 and between the water supplementing pipeline 11 and the secondary side pipeline 6. In order to realize automatic water supplement, the valve can adopt an electric valve, a pressure or flow detection device is arranged in the secondary side pipeline 6, when the pressure or flow of the heating water is reduced, a control signal is sent to the valve, and the valve 91 is opened to supplement water.
The source of the heat source water in the primary pipe 5 is mainly residual heat of a boiler plant or a thermal power plant, and for this purpose, the heat exchanger unit further includes a primary water supply pipe 7 for supplying water to the primary water inlet pipe 51 and a primary water discharge pipe 8 for recovering water discharged from the primary water return pipe 52. A primary water separator 12 is provided between the primary water supply pipe 7 and the primary water inlet pipe 51 to supply heat source water to the first heat exchange module 1 and the second heat exchange module 2, respectively; the primary-side water return pipe 52 and the primary-side water discharge pipe 8 are supported by the primary-side water collector 13, and the return water of the first heat exchange module 1 and the return water of the second heat exchange module 2 are recovered by the primary-side water collector 13 and are supplied to a boiler plant or a thermal power plant through the primary-side water discharge pipe 8.
In order to ensure the water quality of the primary side tube furnace, although the water quality of the heat source water from the thermal power plant is high, impurities are difficult to be mixed in the process of conveying, and therefore, a filtering and pollution discharging device 14 is particularly arranged on the primary side water supply pipe 7 to ensure the water quality entering the heat exchange unit, particularly the heat exchanger 3, and prevent the primary side pipeline 5 and the heat exchanger 3 from scaling to influence the heat exchange effect. In addition, a filtering and dirt discharging device 14 can be arranged at the position where the secondary side water return pipe 62 is connected with the heat exchanger 3, so that the structure of the heat exchanger 3 can be prevented.
In order to ensure the water flow balance between the primary side water supply pipe 7 and the primary side water discharge pipe 8, the automatic water supply system is also connected with the primary side water discharge pipe 8, when the return water flow of the primary side water discharge pipe 8 is smaller than the primary side water supply flow, the automatic water supply system supplies the return water to the primary side water discharge pipe 8, and the recovered water amount of the thermal power plant or the boiler plant is ensured to be equal to the supplied heat source water amount. Because the quality of the supplied water of the thermal power plant is high, and the water quality and the like of the water recovered by the primary side drain pipe 8 are high, the automatic water replenishing system is subjected to certain filtering and desalting treatment when replenishing the return water to the primary side drain pipe 8.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The heat exchange unit provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A heat exchange unit, characterized in that it comprises a first heat exchange module (1) for heating a first type of users at a first preset pressure, and a second heat exchange module (2) for heating a second type of users at a second preset pressure;
the first heat exchange module (1) and the second heat exchange module (2) respectively comprise a primary side pipeline (5) for heat source water circulation, a secondary side pipeline (6) for user heating water circulation and a heat exchanger (3) for heat exchange of the primary side pipeline (5) and the secondary side pipeline (6);
and a pressurizing pump (4) connected to the primary side pipeline (5).
2. Heat exchange unit according to claim 1, wherein the primary side piping (5) comprises a primary side water inlet pipe (51) and a primary side water return pipe (52) connecting the primary side water inlet pipe (51), and the secondary side piping (6) comprises a secondary side water inlet pipe (61) and a secondary side water return pipe (62) connecting the secondary side water inlet pipe (61); the pressure pump (4) is arranged at a position where the primary side water return pipe (52) is close to the heat exchanger (3).
3. Heat exchange unit according to claim 2, characterised in that said pressure pump (4) is a variable-frequency pressure pump and said heat exchanger (3) is a plate heat exchanger.
4. Heat exchange unit according to claim 2 or 3, characterised in that a connection pipe (9) is provided between the primary side water inlet pipe (51) and the secondary side pipe (6), and a return water connection pipe (15) is provided between the primary side return pipe (52) and the secondary side pipe (6);
the connecting pipeline (9) is provided with a control valve (91) for controlling the conduction and the closing of the connecting pipeline, the water return connecting pipe (15) is provided with a water return valve (151) for controlling the conduction and the closing of the water return connecting pipe, and the primary side pipeline (5) and the secondary side pipeline (6) are both provided with an isolation valve (16) for isolating the heat exchanger (3);
the control valve (91) is used for being opened when the heating water heat load of the secondary side pipeline (6) is insufficient, and the water return valve (151) is used for being opened when the heating water pressure of the secondary side pipeline (6) exceeds a preset value.
5. Heat exchange unit according to claim 4, characterised in that said control valve (91), said return valve (151) and said isolation valve (16) are all electric valves, further comprising control means connecting said control valve (91), said return valve (151) and said isolation valve (16) in operation.
6. Heat exchange unit according to claim 5, characterised in that it further comprises an automatic water replenishment system connected to the secondary side conduit (6) to replenish the secondary side conduit (6) when the secondary side conduit (6) is in shortage of heating water.
7. Heat exchange unit according to claim 6, characterised in that said automatic water replenishment system comprises a water replenishment line (11) connected to said secondary side line (6) and a water replenishment tank (10) supplying water to said water replenishment line (11), said water replenishment tank (10) and said water replenishment line (11) being provided with valves, said water replenishment line (11) and said secondary side line (6) being provided with valves.
8. The heat exchanger unit as set forth in claim 7, further comprising a primary-side water discharge pipe (8) for supplying water to the primary-side water inlet pipe (51) and for recovering water discharged from the primary-side water return pipe (52);
a primary side water separator (12) is provided between the primary side water supply pipe (7) and the primary side water inlet pipe (51), and a primary side water collector (13) is provided between the primary side water return pipe (52) and the primary side water outlet pipe (8).
9. Heat exchanger unit according to claim 8, wherein the primary water supply pipe (7) is provided with a filtering and dirt discharge device (14).
10. Heat exchanger unit according to claim 9, wherein the automatic water replenishment system is connected to the primary side water discharge pipe (8) and is configured to replenish the primary side water discharge pipe (8) with return water when the return water flow rate of the primary side water discharge pipe (8) is smaller than the supply water flow rate of the primary side water supply pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921588236.6U CN210740506U (en) | 2019-09-23 | 2019-09-23 | Heat exchange unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921588236.6U CN210740506U (en) | 2019-09-23 | 2019-09-23 | Heat exchange unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210740506U true CN210740506U (en) | 2020-06-12 |
Family
ID=71005122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921588236.6U Active CN210740506U (en) | 2019-09-23 | 2019-09-23 | Heat exchange unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210740506U (en) |
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2019
- 2019-09-23 CN CN201921588236.6U patent/CN210740506U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210816 Address after: 136000 No. 151, Beiyi Road, Tiedong District, Siping City, Jilin Province Patentee after: Siping Donghao ventilation and heat exchange Manufacturing Co.,Ltd. Address before: 136000 Room 302, unit 4, building 27, Hongxin Rhine riverside community, Siping City, Jilin Province Patentee before: Cai Yubin |