KR102119793B1 - Filtering apparatus for heat exchange water applied to district heating system - Google Patents

Abstract

The present invention relates to a device applied to a district heating system for supplying heat produced by a heat production facility to each consumer in a building, and more particularly, to a heat exchange water filtering device, which comprises: an inlet through which heat exchange water is introduced as a heat transfer medium for transferring heat produced by a heat production facility to a consumer; a filter unit for removing foreign matters in the heat exchange water; and an outlet for supplying the heat exchange water removed with the foreign matters to the consumer. The heat exchange water filtering device of the present invention further comprises a pump interposed between the inlet and the filter unit, and pressurizing the heat exchange water introduced through the inlet to discharge the same to the outlet through the filter unit.

Description

Heat exchange water filtering device applied to district heating system {FILTERING APPARATUS FOR HEAT EXCHANGE WATER APPLIED TO DISTRICT HEATING SYSTEM}

The present invention relates to a heat-exchanging water filtering device for filtering heat-exchanging water such as cold and hot water used in a district heating system.

In general, a district heating system is a system in which a group supplying collective energy supplies collective energy through piping for heating and hot water supply to a large number of individual users, and is different from an individual heating system in which users individually have heating facilities.

In other words, district heating is necessary for heating and hot water supply by constructing a large-scale heat production facility, that is, a cogeneration plant, without various buildings such as houses, shopping malls, offices, schools, and hospitals located in one city or a certain area. It is a system that produces medium hot water (80~120℃) and supplies it to each consumer through a heat transportation pipe.

1 is a block diagram of a district heating system. As shown in FIG. 1, the district heating system includes a heat source 1, a heat exchanger 3, a circulation pump 5, a heat pipe 7, a user heat exchanger 9, and an air conditioning system ( 10).

The heat source 1 is at least one of a combined heat and power plant, a heat-exclusive boiler, a micro turbine, a small gas engine, and a small gas turbine so that hot water from a large-scale district heating or small-scale district heating can be used. Can be. At this time, the heat source 1 may include a heat storage tank for storing hot water.

The heat exchanger (3) exchanges and transfers the hot water produced from the heat source (1), the circulation pump (5) circulates the heat exchanged hot water in the heat exchanger (3), and the heat pipe (7) is a circulation pump (5) It can be connected to provide a path for transporting or recovering hot water to the building (A) to be supplied with heat. In addition, the user heat exchanger 9 is installed in a management room or a machine room of the building object A to be heat exchanged with hot water delivered through the heat pipe 7 to supply hot water to each household in the building object A. .

At this time, if the foreign matter is contained in the hot water, which is a heat medium that is transferred through the heat pipe 7, the rust occurs in the transfer pipe or the pump used to transfer the hot water containing the foreign matter to each household fails, or Or there is a problem that the thermal efficiency is lowered when delivered to each consumer.

Therefore, there is an urgent need for a solution to solve this problem.

KR 10-1392456 B1

The present invention is to provide a heat exchange water filtering device for solving various problems caused by foreign substances by removing foreign substances contained in hot water, which is a heat medium that transfers heat from a heat production facility side to a consumer side in a district heating system. .

In order to solve the above problems, the present invention is an apparatus applied to a district heating system that supplies heat generated from a heat production facility to each customer in a building, and transfers the heat produced by the heat production facility to the customer And an inlet through which heat-exchanged water as a heat transfer medium flows in, a filter unit for removing foreign substances in the heat-exchanged water, and an outlet for supplying the heat-exchanged water from which the foreign substances are removed to the consumer side, interposed between the inlet and the filter unit It provides a heat exchange water filtering device, characterized in that it further comprises a pump for pressurizing the heat exchange water flowing through the inlet to discharge to the outlet through the filter unit.

According to one embodiment, the pump is one, the filter portion connected to the outlet of the one pump is a plurality, the pump and the filter portion is installed on a mobile cart, the inlet and the outlet is one side of the mobile cart In the same direction.

According to an embodiment, a control unit that generates a notification signal when determining a clogging phenomenon of all of the filter parts by using a hydraulic pressure measured for each of the front and rear ends of the filter part and determining a clogging phenomenon of all of the plurality of filter parts It may further include.

According to one embodiment, the control unit determines the clogging phenomenon of the filter unit by using the hydraulic pressure measured for each of the front and rear ends of the filter unit, and is blocked by the second filter unit, which is one of the plurality of filter units When the phenomenon is judged, the heat exchange water discharged from the first filter unit, which is at least one other, is introduced into the outlet of the second filter unit, so that foreign matter in the floating second filter unit is located in front of the inlet of the second filter unit. It can be discharged through the drain.

According to one embodiment, it is located at the front end of the inlet, further comprising a particle analysis device for measuring the concentration of particles in the heat exchange water, when the concentration measured by the particle analysis device exceeds a predetermined concentration avoided The heat exchange water to be measured can be bypassed to the heat production facility side.

According to an embodiment of the present invention, by removing the foreign matter contained in the hot water that is a medium for transferring heat from the heat production facility side to the consumer side in the district heating system, it is possible to solve the problems caused by the foreign matter.

That is, to solve the problem of rust generated in the conveying pipe due to foreign substances contained in the hot water, a problem of a failure in the pump used to pressurize the hot water containing the foreign substances, and a problem of decreasing efficiency when transferring heat to each consumer. Can be.

In addition, according to an embodiment of the present invention, even if a clogging phenomenon occurs in any one filter unit using a plurality of filter units, it is possible to respond until the clogged filter unit is replaced by removing foreign matter clogged.

In addition, according to an embodiment of the present invention, by analyzing the foreign matter in the hot water using a particle analysis device, and when the concentration of the foreign matter in the hot water is to bypass it to the side of the heat production facility, it is possible to increase the expiration date of the filter have.

1 is a block diagram of a district heating system.
2 is a side view of a heat exchange water filtering device according to an embodiment of the present invention.
3 is a plan view of a heat exchange water filtering device according to an embodiment of the present invention.
4 is a view for explaining the opening and closing control of the valve when a clogging phenomenon occurs in any one of the filter parts of the heat exchange water filtering device according to an embodiment of the present invention.
5 is a block diagram of a district heating system according to another embodiment of the present invention.

Hereinafter, exemplary embodiments disclosed herein will be described in detail with reference to the accompanying drawings, but the same or similar elements are assigned the same reference numbers regardless of the reference numerals, and overlapping descriptions thereof will be omitted. The suffixes "modules" and "parts" for components used in the following description are given or mixed only considering the ease of writing the specification, and do not have meanings or roles that are distinguished from each other. In addition, in describing the embodiments disclosed in this specification, detailed descriptions of related known technologies are omitted when it is determined that the gist of the embodiments disclosed in this specification may be obscured. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed in the specification is not limited by the accompanying drawings, and all modifications included in the spirit and technical scope of the present invention , It should be understood to include equivalents or substitutes.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but there may be other components in between. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this specification, terms such as “comprises” or “have” are intended to indicate that there are features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

2 and 3, respectively, is a view showing a side view and a top view of the heat-exchanging water filtering device according to an embodiment of the present invention.

2 and 3, the heat-exchanging water filtering apparatus 100 according to an embodiment of the present invention provides an area that supplies heat generated from a heat production facility (or heat source 1) to each customer in a building. As an apparatus applied to the heating system, an inlet 101 through which heat-exchanged water flows as a heat transfer medium for transferring heat produced by a heat production facility (or heat source 1) to the consumer, and to remove foreign substances in the heat-exchanged water It includes a filter unit 120 and an outlet 102 for supplying the heat exchanged water from which the foreign matter has been removed to the customer side, and is interposed between the inlet 101 and the filter unit 120, and the heat exchange water introduced through the inlet It may include a pump 110 for discharging to the outlet 102 through the filter unit 120 by pressing.

Heat exchange water filtering apparatus 100 according to an embodiment of the present invention, as described above, is located between the heat production facility (or heat source (1)) and the customer side, such as hot water, such as a medium for transferring heat By removing the foreign substances contained in the heat exchange water, the problem of rust in the piping that may be caused by the foreign substances, the problem of the failure of the pump due to the foreign substances, and the problem of deterioration in thermal efficiency during heat transfer can be solved.

However, since the components shown in FIGS. 1 and 2 are not essential, it is needless to say that a heat exchange water filtering device having more or fewer components may be implemented.

Looking at each component, the filter unit 120 is for filtering foreign substances in the heat exchange water, foreign substances contained in the heat exchange water introduced through the inlet 101 from the heat production facility (or heat source (1)) side Or micro-pollutants can be filtered out.

The filter unit 120 is not particularly limited as long as it is for filtering and removing the foreign matter or micro-contaminants, but for example, includes at least one unit filter in the form of a cylinder or a bag in which many micrometer-sized micro-pores are formed. , It is possible to filter out and remove foreign substances or micro contaminants present in the heat exchange water passing through the micro holes formed in the unit filter.

At this time, the filter unit 120 is blocked by foreign substances or contaminants over a certain value, so that it is periodically replaced or cleaned so that it does not lose the ability to filter out foreign substances or micro-contaminants in the heat exchange water, or is equipped with a unit filter, or Desorption is preferred.

According to the filtering function of the unit filter mounted in the filter unit 120, the filter unit can remove foreign substances in the process of heat exchange water to be treated enters the interior of the unit filter and penetrates the wall of the unit filter and flows out. It is preferable that the inlet of 120 is located at the upper end of the filter unit 120, and on the contrary, the outlet is preferably located at the lower end of the filter unit 120.

The pump 110 transports the heat exchanged water to generate a series of flows through which the heat exchanged water flowing through the inlet 101 of the heat exchange water filtering device 100 according to an embodiment of the present invention flows through the outlet 102 In order to do so, preferably located at the front end of the inlet of the filter unit 120, pressurized the heat-exchanged water flowing through the inlet 101 of the heat exchange water filtering device 100 and transferred to the filter unit 120, the filter The heat-exchanged water in which the foreign matter is filtered by the unit 120 may be discharged to the consumer through the outlet 102 of the heat-exchanging water filtering device 100.

The pump 110 pulls up the heat-exchanged water introduced through the inlet 101 of the heat-exchanging water filtering device 100 to the upper end of the filter unit 120, but the micro-pores of at least one unit filter in the filter unit 120 It may be pressurized so that the heat exchange water can pass.

The type of the pump 110 is not particularly limited, but according to an exemplary embodiment, the pump 110 may be an inline pump.

According to one preferred embodiment of the present invention, the above-described pump 110 and the filter unit 120 is installed on the mobile cart 150, at least one wheel is attached to the bottom, as shown in Figures 2 and 3 By modularization, the user can easily install the modularized heat exchange water filtering device 100 as required. At this time, preferably, the inlet 101 and the outlet 102 of the heat-exchanging water filtering device 100 may be installed to face the same direction on one side of the mobile truck 150.

That is, when the heat exchange water filtering device 100 according to an embodiment of the present invention is installed on an existing pipe, the inlet 101 and the outlet 102 arranged so as to face either direction face the pipe to be installed. , By moving the modularized heat exchange water filtering device 100, there is an effect that can be easily installed. In addition, there is an effect that is very easy to move for installation, washing, repair, replacement, etc. for the pump 110 and/or the filter unit 120.

On the other hand, the control unit (not shown) of the heat-exchanging water filtering device 100 according to an embodiment of the present invention, using the hydraulic pressure measured for each of the front and rear ends of the filter unit 120, clogging the filter unit 120 It can be determined whether or not a phenomenon has occurred.

The front end of the filter unit 120, that is, the first pressure of the inlet portion through which the heat exchange water flows into the filter unit 120, and the second pressure of the outlet portion of the filter unit 120, that is, the heat exchange water flows out from the filter unit 120. In comparison, when the difference between the first and second pressures is equal to or less than a preset pressure difference, it may be determined that clogging of the filter unit 120 does not occur due to a small pressure drop due to the filter, and vice versa. 2 If the difference in pressure exceeds a preset pressure difference, it may be determined that the pressure drop due to the clogged filter is large, so that the clogging of the filter unit 120 has occurred.

At this time, the control unit generates a notification signal, and may output a warning signal to the outside through sound or light according to the alarm signal using a speaker or a light emitting unit, or use a communication unit (not shown) to send the notification signal to an external terminal. By sending to the notification, it is possible to request a replacement for the filter unit 120.

On the other hand, the heat exchange water filtering apparatus 100 according to an embodiment of the present invention preferably includes a plurality of filter units 120, the plurality of filter unit 120, parallel to one pump 110 It is preferred to connect. That is, as shown in Figure 3, the pipe extending from the outlet of one pump 110 is divided into two or more around the branch point (S) and each branch pipe can be connected to each inlet of the plurality of filter parts have.

When the heat-exchanging water filtering device 100 according to an embodiment of the present invention includes a plurality of filter units 120, it increases the amount that can be simultaneously filtered for heat-exchanging water or the rate of filtration processing for heat-exchanging water Can increase.

When the filter unit 120 is plural, when any one of the plurality of filter units 120 connected in parallel is blocked, the heat-exchanged water pushed through the pump 110 is transferred to the consumer through the other filter unit 120. It can be transferred, in this case, it is preferable that the controller generates a different notification signal than when it is determined that clogging has occurred for all of the plurality of filter units 120.

That is, the control unit, for each of the plurality of filter units 120, by using the hydraulic pressure measured before and after each filter unit 120, can determine the clogging phenomenon for each filter unit 120, When it is determined that a clogging phenomenon has occurred with respect to the second filter unit 122 which is one of the plurality of filter units 120, the second filter unit may exchange heat exchanged water from the other at least one first filter unit 121. 122, the foreign matter in the floating second filter unit 122 can be discharged to the outside through the drain located at the front end of the inlet of the second filter unit 122.

For example, in detail, FIG. 4 is a view for explaining the opening/closing control of a valve when a clogging phenomenon occurs in any one of the heat exchange water filtering devices according to an embodiment of the present invention.

As shown in Figure 4 (a), a first inlet valve 131 and a first outlet valve 141 are installed at each of the front and rear ends of the first filter unit 121, the first inlet valve 131 And the first outlet valve 141 may be driven and controlled by a control unit (not shown) to control the flow of heat exchange water through the inlet and outlet of the first filter unit 121. Also, similarly, a second inlet valve 132 and a second outlet valve 142 are installed at each of the front and rear ends of the second filter unit 122, wherein the second inlet valve 132 and the second outlet valve 142 are Drive control by a control unit (not shown), it is also possible to control the flow of heat exchange water through the inlet and outlet of the second filter unit 122.

FIG. 4(a) illustrates two filter units 121 and 122, but the scope of the present invention is not limited to this, and the heat exchange water filtering device 100 according to an embodiment of the present invention includes three or more filter units. Of course it can.

When a clogging phenomenon occurs in the second filter unit 122 which is one of the first and second filter units 121 and 122 (at this time, the first inlet valve 131 and the first outlet valve 141, and the second) The inlet valve 132 and the second outlet valve 142 are both open), and the second inlet valve 132 of the second filter unit 122 is closed, so that the first and second filter units 121, 122) the heat exchange water flowing out from the other one of the first filter unit 121 flows into the outlet of the second filter unit 122 to plug the micro holes of the unit filter in the second filter unit 122 Floating foreign matter, and then opening a drain (drain) valve (not shown) located at the front end of the second filter unit 122 to discharge it through the drain pipe to the outside, thereby removing the foreign matter in the blocked second filter unit 122. It is possible to temporarily respond until the second filter unit 122 is replaced by whisking.

Here, it is preferable that the drain valve and/or the drain pipe are located between the first and second filter parts 121 and 122 and the inlet valves 131 and 132 located at the front end thereof.

According to another embodiment of the present invention, the control unit with respect to the opening and closing operation of the outlet valve located at the rear end of the second filter unit 122 and the drain (drain) valve located at the front end determined that clogging has occurred, FIG. 4(b) It can be controlled to operate in a cycle (cycle) as shown in ).

As shown in Figure 4 (b), by repeating the opening and closing operation of the second outlet valve 142 within a predetermined period of time to allow the heat exchange water to flow into the second filter unit 122 at a constant flow rate or flow rate, Accordingly, by causing the unit filter in the second filter unit 122 to vibrate, the plugged foreign matter can be effectively shaken to float a larger amount of foreign matter.

The opening/closing operation of the drain valve is interlocked with the opening/closing operation of the second outlet valve 142, but the length of half of one cycle consisting of the opening/closing of the drain valve is one cycle consisting of the opening/closing of the second outlet valve 142. It is preferable that the length of is more than, and further, the time when the drain valve is opened is preferably slightly delayed than the time when the second outlet valve 142 is opened (see FIG. 4(b)).

As a result, when the drain valve is opened or closed, the second outlet valve 142 sequentially repeats open-closed-opened or closed-opened-closed to generate vibration in the unit filter in the second filter unit 122, It can effectively float / discharge foreign substances. At this time, both the second inlet valve 132 and the second outlet valve 142 are kept closed for a predetermined time so that foreign matter can be sufficiently suspended during the resting time by vibration, and the second inlet Both the valve 132 and the second outlet valve 142 may remain open for a predetermined time so that the suspended foreign matter is sufficiently discharged to the outside through the drain pipe.

On the other hand, Figure 5 is a block diagram of a district heating system according to another embodiment of the present invention.

5, the district heating system according to another embodiment of the present invention is located at the front end of the heat exchange water filtering device 100, that is, located at the front end of the inlet 101 of the heat exchange water filtering device 100 It may further include a particle analysis device 200 that can measure the particle size (or particle size) or concentration of particles in the heat exchange water.

The particle analysis device 200 may measure the concentration of particles by using a known method for particles contained in heat-exchanged water transported in the pipe, and transmit the measured values to the control unit.

When the control unit exceeds a predetermined concentration by using the concentration value measured for the particle by the particle analysis device 200, the heat generated water, which is the measurement target of the particle analysis device 200, is heat-produced through the bypass channel. By bypassing the facility side (which can point to the power plant 1 in FIG. 5), it is possible to prevent the filter unit 120 from clogging and failing to function properly due to particles having a high concentration in the heat exchange water.

The preferred embodiments of the present invention have been described above in detail with reference to the drawings. The description of the present invention is for illustrative purposes, and those skilled in the art to which the present invention pertains will understand that it is possible to easily modify to other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the scope of the present invention is indicated by the claims, which will be described later, rather than by the detailed description, and all the changed or modified forms derived from the meaning, scope, and equivalent concepts of the claims are included in the scope of the present invention. Should be interpreted.

1: Heat source 3: Heat exchanger
5: Circulation pump 7: Heat piping
9: User heat exchanger 10: Air conditioning
100: heat exchange water filtering device 101: inlet
102: outlet 110: pump
111: pump inlet 112: pump outlet
120: filter unit 121: the first filter unit
122: second filter unit 131: first inlet valve
132: second inlet valve 141: first outlet valve
142: second outlet valve 200: particle analysis device
S: Junction

Claims (5)

In the device applied to the district heating system that supplies heat generated from the heat production facility to each customer in the building,
An inlet through which heat-exchanged water as a heat transfer medium for transferring heat produced by the heat production facility to the consumer is introduced;
A filter unit for removing foreign substances in the heat exchange water;
An outlet for supplying the heat exchange water from which the foreign matter has been removed to the consumer;
A pump interposed between the inlet and the filter, and pressurizing the heat exchange water flowing through the inlet to discharge it to the outlet through the filter; And
A particle analysis device positioned at the front end of the inlet and measuring the concentration of particles in the heat exchange water;
Including,
When the concentration measured by the particle analysis device exceeds a predetermined concentration, the heat exchange water filtering device, characterized in that to bypass the heat exchange water to be measured to the heat production facility side. According to claim 1,
The pump is one, and the plurality of filter parts connected to the outlet of the one pump are provided, and the pump and the filter part are installed on a movable cart, and the inlet and the outlet are arranged in the same direction on one side of the movable cart. Heat exchange water filtering device, characterized in that. According to claim 2,
A control unit for determining a clogging phenomenon of the filter unit using hydraulic pressure measured for each of the front and rear ends of the filter unit, and generating a notification signal when determining a clogging phenomenon for all of the plurality of filter units;
Heat exchange water filtering device further comprising a. The method of claim 3,
The control unit,
When using the hydraulic pressure measured for each of the front and rear ends of the filter unit, the clogging of the filter unit is determined, and when the clogging phenomenon of the second filter unit of any one of the plurality of filter units is determined, the other at least one agent is used. 1 to flow the heat-exchanged water discharged from the filter unit into the outlet of the second filter unit, thereby discharging the foreign matter in the floating second filter unit to the outside through a drain located in front of the inlet of the second filter unit Features heat exchange water filtering device. delete

Images