Fluid distribution control system

FIELD: machine building.

SUBSTANCE: proposed system comprises at least two temperature control circuits 2, 3, 4. Pressure control unit 18, 19, 20 is arranged to simplify and to optimise power consumption in every circuit 2, 3, 4. Pressure control units 18, 19, 20 allow invariable pressure difference in appropriate circuit 2, 3, 4. Pressure control units 18, 19, 20 equalise pressure difference in all said circuits.

EFFECT: power savings, better convenience.

11 cl, 4 dwg

 

The invention relates to a system for regulating distribution of the fluid having at least two loop temperature control, in which each circuit unit is installed a pressure regulator providing a constant differential pressure contours.

Typically, the system control distribution of fluid used as Underfloor heating systems. On the above outline serves a hot fluid medium, such as heated water. Contours are usually formed from pipes installed in the floor, ceiling or wall of a building. Typically, the contours contain the piping for the coolant, which includes the lead pipe and the return pipe. To circulate in the circuits of the pump.

Patent document WO 2010/095093 A2 relates to systems for heating or cooling, containing the path group. Is the distribution of the fluid distribution manifold along the contours with the return in the return manifold. A distribution manifold connected to the return manifold through the pipeline containing the pump. At least one of the collectors are installed actuators. Actuators regulate the flow in the circuits. To protect the pump from excessive pressure, at least one of the actuators OST the stations in the open position.

Regulation of the distribution of the fluid may be used as a system for regulating temperature of the floor. System temperature control floor are widespread. The distribution of heat or cold from the floor in the room is very homogeneous. Also provided by such systems to the walls or ceiling, but the description in order to simplify provided only for systems installed in the floor. In General, the invention proposed to regulate the temperature in the premises by loops involving the use of fluid with temperature-controlled. Below in the description, the term "capacity" is synonymous with the term "cooling capacity".

The agreement outlines the building often leads to problems. Small room, requiring small amounts of heat required short circuit. For a uniform temperature distribution in large areas require long paths. Thus, the hydraulic resistance in small rooms less than great. The amount of fluid in the circuits is in accordance with the hydraulic resistance. Therefore, the amount of fluid in small spaces much more than in large rooms. This is in contradiction with the aim of ensuring the uniformity of flow rate and u is adelene heat in all rooms. Even heat distribution provides a high degree of comfort. In turn, poor distribution leads to energy losses.

You know, how they affect the hydraulic resistance installed in each circuit valves flow control or flow control. In the installation process temperature control floor is adjusting these valves, which outlines the required distribution of consumption. However, the process of adjustment of flow control is complex and may be accompanied by errors.

In the patent document DE 102006052124 A1 describes a system of alignment device for regulating the temperature of the floor, having at least two loop temperature control. Simplify the distribution of the heat output on separate paths are provided through the installation of each circuit temperature-controlled actuator. These actuators provide the same temperature at the outlet of all contours and, therefore, the automatic flow control.

In document EP 0677708 A2 disclosed heating system containing multiple heaters. At the entrance of each heater has one set of blocks of pressure adjustment. Heaters are installed in circuits with the trumpets.

In the document US 2010/0147394 A1 disclosed ebohr the state of the network, contains many units of pressure regulation. Each block pressure control regulates the flow in the circuit containing multiple heaters.

In document EP 0911714 A1 (3) disclosed valve flow control that contains the control pressure. Valve flow control can be used in a heating system to adjust the pressure differential.

One disadvantage of this design is that the regulation of the entire system is the temperature in the return pipeline. If necessary, raise the temperature of the floor there is a possibility of increasing the temperature at the entrance. But have to wait until you decrease the setpoint temperature in the return pipeline. This leads to an imbalance floor temperature and reduces comfort.

The aim of the invention is to offer an easily adjustable system for regulating distribution of fluid.

Such goal is achieved by the regulation of the distribution of the fluid with signs of paragraph 1 of the claims.

Blocks control pressure support pressure contours at a constant level regardless of the length of the path. The term "circuit" is designated as the piping and valve. In other words, each block of the pressure control provides automatic balansirovali regulation does not depend on the temperature of the fluid. Therefore, it does not affect individual temperature control. As the pressure drops in the aligned contours, velocity of the fluid in the circuits are almost identical. Therefore ensured even distribution of fluid and heat, as well as the effective rate.

Preferably the circuits connected to at least one common distribution manifold and at least one common return manifold. The use of a common distribution manifold and a common reverse collector simplifies the distribution and the merger of the fluid in the paths.

Preferably the blocks pressure regulating installed in at least one of these collectors, in particular in the reverse collector. Space available in the reservoir, it is enough to install the units of pressure regulation. Access to the reservoir is usually possible without problems because they are not in the floor and not the ceiling. Therefore, allow easy access to the installed in the manifold blocks with the possibility of routine maintenance blocks. Another advantage is the ease of fabrication and the possibility of early manufacture of manifold blocks. To use the collector only needs to install it and connect with the contours. When autobalance is istemi regulation of the distribution of the fluid and the system is ready for use.

Preferably at least one of the collectors has a coupling for connection to circuits, and each clutch contains one of the units of pressure regulation. Adaptation of the collector is not required as the units of pressure regulation are located in the couplings. In addition, the possibility of simple upgrading of existing systems. In case of failure of one of the units of the pressure regulating easily replaced by replacing the clutch.

Regulation of the distribution of the fluid preferably includes actuators for pochtennogo controlling the flow of fluid. Through these enforcement mechanisms, for example, switching valves, it is possible to make a separate adjustment of the flow rate and hence the heat output in each circuit. Increase the heat output is possible by increasing the opening time of the actuators. Thus, provided the opportunity for individual temperature control in each room of the building.

Preferably the actuators are located in the same reservoir as the units of pressure regulation. Thus, all functional elements are located centrally, in one collector. Provides easy access to this collection is ROS and, therefore, the actuators and units temperature control. Therefore, provided the preferred ease of maintenance and installation.

Preferably all blocks pressure regulation have the same setpoint differential pressure exceeding the maximum pressure drop in the circuits. Thus ensured uniform distribution of the fluid in all circuits. Small enough to exceeding the predetermined pressure differential above the maximum differential pressure in the circuits. The influence of the control pressure in the circuit with the highest pressure drop is minimal, and the path with the lowest pressure drop - maximum. Balancing occurs automatically.

Preferred is a non-linear characteristic of the control pressure. Increasing the pressure differential causes "excessive closure unit pressure control. Thus has the possibility of providing at least the contour of the lower speed of the fluid than in the large loop. The result is increased comfort.

Preferably each block pressure regulation contains a pressure regulating valve having a gate valve, valve seat and a spring acting on the shutter in the opening direction. Davlenie the collector or output circuit acts in the direction of closing the shutter. This pressure is provided in the region between the control pressure and the Executive mechanism. Thus the opportunity is a simple adjustment of the pressure drop in each circuit. A slight pressure drop in the circuit leads to high pressure on the shutter in the closing direction and, consequently, to an increased degree of closing of the shutter. This provides increased hydraulic pressure in the control pressure. A large pressure drop in the circuit creates a small force on the shutter acting in the closing direction. Therefore, in this circuit, the influence of the control pressure slightly. As for the inlet pressure, i.e. the pressure at the input of the circuit or the distribution manifold, the preferred is the independence of the system from the state of the actuators in the other circuits. The flow rate and hence the heat output remains constant.

In the gate valve preferably has a channel connecting the chamber with the outside of the element, the regulating pressure region within the collector. This regulates the pressure element is mounted on the gate valve. In this case, thanks to a specified channel, the pressure in the chamber acting in the opening direction, is equal in magnitude or slightly less than the pressure which I mentioned in the field. If you look in the direction of flow, this area is for blocks control pressure. Typically, this region is located between the control pressure and the Executive mechanism.

Preferably the product of the force input pressure on the surface area of its application is more than the product of the force of the output pressure on the surface area of its application. Inlet pressure is the pressure before the control pressure and the output pressure is the pressure per unit pressure control, when viewed in the flow direction. Surface area is the surface area, which is part of the shutter or regulating the pressure element, so that the pressure applied to this area, affects the position of the gate valve and the valve seat. If the work force input pressure on the surface area of its application is greater than the product of the force of the output pressure on the surface area of its application, provided that the closing of the control unit of pressure reduction of the fluid of the fluid when the specified excess exceeds the spring force acting in the opening direction.

Some embodiments of described with reference to the attached drawings listed below.

Figure 1 - diagram of the system of regulating the distribution of those who UCA environment.

Figure 2 - manifold containing the coupler and the power pressure control, type in the context.

Figure 3 - local section 2.

4 is a detail view of the control unit of pressure.

1 shows a diagram of the system 1 control distribution of fluid containing three circuit 2, 3, 4 temperature control. Each contour 2, 3, 4 contains a pipeline 5, 6, 7 for coolant, installed in the floor, ceiling or wall, the supply lines 8, 9, 10 and the return pipe 11, 12, 13.

The inlet pipes 8, 9, 10 is connected to a distribution manifold 14, and the return pipe 11, 12, 13 are connected with reverse collector 15. The collectors 14, 15 are connected through pipeline 16 with a heat pump 17 to circulate the fluid in the circuits 2, 3, 4.

Each return pipe 11, 12, 13 each loop 2, 3, 4 has a block 18, 19, 20 pressure regulation. Each block 18, 19, 20 of the pressure control maintains the pressure drop in the corresponding loop 2, 3, 4 at a constant level, regardless of its length, together with the hydraulic resistance of the circuit 2, 3, 4. Thus, in circuits 2, 3, 4 is provided a homogeneous distribution of the fluid.

Actuators 21, 22, 23 mounted on the back of the manifold 15. Actuators 21, 22, 23 regulate the amount of fluid in the account is Ah 2, 3, 4. The control unit actuators 21, 22, 23 not shown. You can install wireless system with thermostat for each room that measures the actual temperature in the room. In these thermostats provided the ability to set the desired setpoint temperature; when the discrepancy between the measured and set temperature is opening or closing of the valve. The relationship between thermostats and the corresponding control unit is provided, in particular, on the radio.

Actuators 21, 22, 23 may also be installed on the distribution manifold 14. Alternatively, the actuators may be installed in the distribution manifold 14, and in the reverse collector 15.

Actuators 21, 22, 23 is only necessary to provide the function on and off.

Fluid is a hot or cold water or other suitable liquid, and contains, for example, glycol.

The pressure difference between the distribution manifold 14 and the return manifold 15 is, for example, of 0.6 bar. Paths 2, 3, 4 have different lengths, so these paths have different pressure drops. The pressure drop in the circuit 2, the longest and, therefore, having the biggest hidraulicas the second resistance, is 0.5 bar. The pressure drop in the circuit 3 is 0.3 bar, in the circuit 4, the differential pressure is 0.1 bar.

The above values are given in the description of the system only as an example.

If the units of pressure control is not installed, the larger portion of the stream flows through the short circuit 4 having the low hydraulic resistance and the lowest pressure drop. This leads to poor heat distribution in separate circuits. To ensure a sufficient amount of fluid in all circuits require a large expenditure. Usually this requires a relatively powerful pump.

To address these shortcomings, in each loop 2, 3, 4 has a block 18, 19, 20 pressure regulation. The immediate effect is that the pressure drop and, consequently, the speed of flow in separate paths 2, 3, 4 in such a design almost identical. In other words, the units of pressure regulation to provide uniform distribution of flow. They balance a uniform pressure drop 0,6 bar in all circuits. Blocks control pressure are set to the same value of the differential pressure, in this example, of 0.6 bar. Therefore, the unit 18 of the control pressure circuit 2 generates an additional pressure drop of 0.1 bar. The block 19 in the circuit 3 b is no differential pressure of 0.3 bar, and the block 20 in the circuit 4 generates a differential pressure of 0.5 bar.

In a preferred embodiment of the invention the control unit of pressure has a nonlinear characteristic. Thus increasing the pressure drop causes an increase in hydraulic pressure in the control pressure, a kind of excessive closure. As a result, the flow rate of short circuits is less than the flow rate in longer paths. In the end provided with improved heat distribution.

Figure 2 in the form shown in the cross section opposite the reservoir 15 containing the associated actuator 21 and the block 18 pressure regulation. Block 18 pressure control is installed in the sleeve 24 opposite the collector 15. The collector 15 has a coupling 24, 25, 26, one clutch per circuit 2, 3, 4. In an alternative embodiment of the invention the control unit integrated pressure in the header.

Figure 3 local section shows the block 18 pressure regulation. Block 18 pressure regulation contains a pressure regulating valve having a gate valve 27 and the seat 28 of the valve. A spring 29 acts on the shutter 27 of the valve in the opening direction. The pressure of the fluid in region 30 located behind the unit 18 to control pressure, when viewed in the flow direction, acts in the closing direction. Region 30 is formed in Ulke 35, which connects the clutch 24 with the reservoir 15 and forms a saddle valve 31 to the actuator 21.

In addition, the block 18 of the pressure control includes a pressure-sensitive element 32. In the example of the pressure-sensitive element 32 is a membrane, but alternatively, a pressure-sensitive element 32 is a bellows.

A pressure-sensitive element 32 is in contact with the stopper 27 of the valve so that the pressure acting on the outer surface of the membrane, causes a force closing the gate valve 27.

In the gate valve 27 is formed of the channel 34, the connecting region 30 with the chamber 33 from the outside of the membrane. The pressure in region 30 is applied in the direction of closing the shutter 27 of the valve. The pressure in the chamber 33 is applied in the direction of the shutter opening 27 of the valve. The pressure at the inlet 36 of the coupling 24 is applied in the opening direction and the closing direction. Due to the interaction of the shutter 27 of the valve seat 28 of the valve between the inlet 36 and the region 30, there is a pressure drop.

Provided by the manufacturer of the membrane, usually made of rubber and other components, in particular, of brass or plastic. There is no need to introduce hose into the reservoir in the vertical direction. Thus prevented lesson hoses too much space in the premises of the Institute. In addition, the possible solution, in which the sleeve 24 is located on the axis of the collector 15, forming with it a single Cabinet item.

Now more about the function of block 18 of the pressure regulating depicted in Figure 4. The unit is designed to reduce consumption while increasing its pressure drop. The unit is to be used for balancing the flow velocity in the contours of the floor heating systems having a different length.

On the saddle valve 28 external pump 17 creates a pressure drop. A spring 29 tends to keep the unit 18 to control the pressure in the open position.

The resulting force acting in the direction of opening of the gate valve 27 is the result of the addition power of the pressure P1 at the inlet 36, is applied to the surface area A2, the force of the output pressure P2 in region 30, is applied to the area of the surfaces A4 and A3, and the force F of the spring 29.

The resultant force applied in the direction of closing the slide valve 27, is the result of the addition of the pressure force P1 applied to the surface area A4, and the pressure force P2 output is applied to the surface area P2.

These resultant forces are described by the functions:

Opening force: (A2·P1)+(A4·P2)/2+(A3·P2)+F

Clamping force: (A1·P2)+(A4·P1)/2

The product of the force input pressure P1 on the surface area A2, A4 its applications to exceed the product of the silts of the output pressure P2 on the surface area A1, A3, A4. The value specified is exceeded, it is possible to effect adjustment of the surface areas A1, A2, A3, A4 of application of these forces of pressure.

If the excess exceeds the force of spring 29, the closure unit 18 to control the pressure with decreasing flow. Adjusting the surface area and the stiffness coefficient of the spring representing the change efforts at compression spring on one millimeter, provides adjustment of the throttling bandwidth, i.e. the authority of the valve as a function of differential pressure.

1. Regulation of the distribution of the fluid having at least two loop temperature control, and in each circuit (2, 3, 4) has a unit (18, 19, 20) of the pressure control ensuring a constant differential pressure contours (2, 3, 4), characterized in that the blocks (18, 19, 20) of the pressure regulating balance even pressure drop in all the paths.

2. The system according to claim 1, characterized in that the contours (2, 3, 4) are connected at least with one common distribution manifold (14) and at least one common return manifold (15).

3. The system according to claim 1 or 2, characterized in that the blocks (18, 19, 20) of the pressure regulating installed in at least one reservoir (14, 15), in particular in the reverse manifold 15.

4. The system according to claim 1 or 2, characterized in that at least one of the collectors (14, 15) contains clutches (24, 25, 26) for connection to circuits (2, 3, 4), and each pair (24, 25, 26) contains one of the specified blocks (18, 19, 20) of the pressure control.

5. The system according to claim 1 or 2, characterized in that it contains actuators (21, 22, 23)regulating the flow of fluid in each circuit(2, 3, 4).

6. The system according to claim 5, characterized in that the said actuating mechanisms (21, 22, 23) are mounted on the same manifold (15), and blocks (18, 19, 20) of the pressure control.

7. System according to any one of claims 1, 2, 6, characterized in that the blocks (18, 19, 20) of the pressure control have the same setpoint differential pressure exceeding the maximum pressure drop in the contours(2, 3, 4).

8. System according to any one of claims 1, 2, 6, characterized in that the block (18, 19, 20) of the pressure control has a nonlinear characteristic.

9. System according to any one of claims 1, 2, 6, characterized in that each block (18, 19, 20) of the pressure regulating contains a pressure regulating valve having a shutter (27) of the valve seat (28) of the valve and spring (29), acting in the direction of opening.

10. The system according to claim 9, characterized in that the shutter (27) of the valve has a channel (34)connecting chamber (33)located on the outer side of the regulating pressure element (32), area (3) inside the reservoir (15).

11. System according to any one of claims 1, 2, 6, 10, characterized in that the product of the force input pressure (P1) of the block (18) regulation of pressure on the surface area (A1, A3, A4) it applications more than the product of the force of the output pressure (P2) of the block (18) regulation of pressure on the surface area (A1, A3, A4).



 

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1 cl, 2 dwg

FIELD: heat-power engineering, possible use in heat supply systems with dependent circuit of connection of heating systems in form of automated heating station.

SUBSTANCE: automated heating station of heating and hot water supply system contains feeding pipeline of heating network with flow controller mounted in it, feeding and reversing heating system pipelines, mixing pump, heating controller, inputs of which are connected to temperature indicators in heating system and environment, water-heating device for hot water supply system, installed between feeding and reversing pipelines of heating network, control input of flow controller being connected to control unit output, input of which is connected to outputs of heating system parameter indicators. Frequency transformer is introduced into heating station of heating system, and as mixing pump, pump with possible working frequency adjustment is used. Output of heating controller is connected to input of frequency transformer, output of which is connected to electric outputs of mixing pump. Mixing pump is installed in input-output direction between reverse and direct pipelines of the heating system. A variant of automated heating station of heating and hot water supply system is also described.

EFFECT: lower electric energy costs, increased lifetime of equipment, maintained consistency of heat carrier flow in heating system.

2 cl, 6 dwg

FIELD: engineering of armature for measuring, controlling, cleaning and stabilizing pressure for liquid supply systems, possible use, in particular, for supplying water in domestic buildings, cottages, and other consumers in any industrial branch involving supplying of a liquid component.

SUBSTANCE: measuring, monitoring and cleaning device for liquid feeding systems contains body, locking element, pressure regulator, liquid meter. Device additionally includes filtration and washing device. Locking element, pressure regulator, liquid meter and filtration and washing device are assembled in single case. Locking element is positioned in liquid inlet connection. Pressure regulator is positioned between liquid inlet and liquid outlet connections, and detachably connected to the case. By means of detachable connection, filtration and washing device is mounted in the case. This device is connected by a collector to pressure regulator hollow and the hollow after the locking element. A filter is mounted at the inlet of pressure regulator hollow. Liquid meter is mounted in the body by means of detachable connection. Outlet hollow of liquid meter is connected to liquid outlet connection. Its inlet hollow by means of another collector is connected to the pressure regulator hollow.

EFFECT: minimized dimensions of device due to combination of locking armature and filtering means in one unit, stabilization of pressure, recording of water (liquid) consumption, possible replacement of devices and elements of armature without disassembly of the whole device and without disabling the liquid feeding system and without requirements for its flush, measuring and monitoring elements are protected from dirt in working mode and during maintenance operations (washing).

2 cl, 2 dwg

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