Y-shaped energy device of water segregator in refrigerator room

Abstract

The utility model relates to a Y-shaped energy device of a water segregator in a refrigerating machine room, which comprises two vertical pipes vertically connected on the water segregator, two ends of the two vertical pipes are respectively and jointly connected with a Y-shaped tee joint, and valves are arranged between the water segregator and the vertical pipes. The two vertical pipes comprise a vertical pipe with an energy meter and a bypass vertical pipe, the energy meter is arranged on the vertical pipe with the energy meter, a butterfly valve in front of the energy meter is arranged on one side of the energy meter, and a temperature measuring valve behind the energy meter is arranged on the other side of the energy meter; and a bypass pipe butterfly valve is arranged on the bypass vertical pipe. According to the Y-shaped energy device of the water segregator in the refrigerating machine room, the two stand pipes are arranged, the two ends of the two stand pipes are respectively connected with the Y-shaped tee joint, the two stand pipes arranged in the Y shape are almost the same in head loss, flow separation and vortex generation are not prone to being caused, and consumption of fluid mechanical energy is reduced. In addition, the Y-shaped arrangement mode is bilaterally symmetrical, space is saved, and the appearance is harmonious and attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a Y-shaped energy device of a water distributor in a refrigeration room. Background Art

[0002] The cold source in the building refrigeration room is often a chiller or a heat pump unit.

[0003] The chiller consists of an evaporator, a compressor, a condenser and a throttling element, and the refrigerant circulates in the pipes connecting the four. In the evaporator, the refrigerant evaporates and absorbs heat, and is converted from a medium-temperature, low-pressure liquid to a low-temperature, low-pressure gas; in the compressor, the refrigerant is compressed and is converted from a medium-temperature, low-pressure gas to a high-temperature, high-pressure gas; in the condenser, the refrigerant condenses and releases heat, and is converted from a high-temperature, high-pressure gas to a high-temperature, high-pressure liquid; in the throttling element, the refrigerant expands in it, and is converted from a high-temperature, high-pressure liquid to a medium-temperature, low-pressure liquid, and returns to the evaporator to circulate this process.

[0004] The evaporator of the chiller is externally connected to the circulating water on the freezing side. The refrigerant evaporates in the evaporator and absorbs heat. The remaining cold energy in the evaporator is carried by water and pumped through the fan coil units, PAU, and AHU surface coolers on each floor of the building. The water supply temperature is 7°C. After the hot air from the built-in fan of the fan coil unit blows through the surface cooler for heat exchange, the return water temperature is 12°C. The air blown out is cold air. The heated water returns to the freezing side of the chiller for cooling and the process is circulated.

[0005] The condenser of the chiller is connected to an external cooling circulating water. The refrigerant condenses and releases heat in the condenser. The remaining heat in the condenser is carried by water and flows into the cooling tower by the water pump. Water is used as a circulating coolant. Water and air flow are contacted for heat exchange to generate steam. The steam evaporates and takes away the heat to achieve evaporation heat absorption, convection heat transfer and radiation heat transfer to dissipate the waste heat generated in the refrigeration and air conditioning to reduce the water temperature. The supply water temperature is 37°C and the return water temperature is 32°C.

[0006] The heat pump unit has one more four-way reversing valve than the chiller, which allows the heat pump unit to not only cool in summer, but also achieve heating in winter by opening the four-way reversing valve to interchange the evaporator and condenser. The chiller can only be used for cooling. If heating is required in winter, a boiler must be set up at the same time. In winter, the chiller must be turned off and the boiler must be turned on for heating.

[0007] In addition to using cooling towers, the cooling methods for the cooling side of chillers and heat pump units can also include air cooling, river and lake water cooling, and earth cooling.

[0008] The water distributor is used to collect the water after being frozen by the chiller or heat pump unit and supply it to various refrigeration equipment in the building.

[0009] For buildings that require energy-saving operation of building equipment, ultrasonic energy meters can be installed on the chillers to control the number of operating refrigeration units and their corresponding water pumps according to the requirements of indoor load changes, so as to adjust the cooling capacity and save energy to the maximum extent. The integrated part load performance coefficient (IPLV) meets the requirements of the "Public Building Energy Saving Design Standard" GB50189-2015.

[0010] Energy meter is an instrument used to measure and display the heat energy released or absorbed by water flowing through a heat exchange system.

[0011] The energy meter consists of a flow sensor, a paired temperature sensor and a calculator. A filter device should be installed at the water inlet of the energy meter.

[0012] a) Calculator (integrator)

[0013] A component that receives signals from a flow sensor and a paired temperature sensor, performs heat calculations, and stores and displays the heat values ​​exchanged by the system.

[0014] b) Flow sensor (flow meter)

[0015] A component installed in a heat exchange system to collect water flow and send out flow signals.

[0016] c) Paired temperature sensor (paired platinum resistance)

[0017] On the same energy meter, a pair of temperature sensors with the same or similar metrological characteristics are used to measure the inlet and outlet temperatures of the heat exchange system respectively.

[0018] Flowmeter is an important part of energy meter. Flowmeter is mainly composed of flowmeter body, transducer and its installation parts, signal processing unit and flow computer. Flowmeter is based on the principle of measuring the relationship between the propagation time of sound wave in flowing medium and flow rate. It is generally believed that the actual propagation speed of sound wave in fluid is composed of the propagation speed of sound wave in the static state of medium and the component of the average axial flow velocity of fluid in the propagation direction of sound wave. When ultrasonic wave propagates in fluid, the speed information of sound wave transmission will be loaded with the speed information of fluid. Because of the superposition of these two signals, the propagation speed of sound wave in downstream and upstream is not equal. Therefore, by measuring these two different speed information, the flow velocity of fluid can be obtained through calculation, and then converted into flow rate, so as to realize the measurement of flow rate.

[0019] The energy meter has the characteristics of compact structure and easy installation. The energy meter adopts high-quality piezoelectric ceramic transducer to ensure high accuracy and stability; there is no mechanical movement, no wear, it is not easily affected by bad water quality and has low maintenance cost; it can be installed horizontally or vertically, and the rotatable meter head can meet the reading requirements of any viewing angle. It can be installed on the water inlet pipe or the return pipe according to the different needs of the user (pre-selection is required); the hot and cold dual-purpose (heating, cooling) energy meter can intelligently judge the heating or cooling status according to the actual use and measure separately.

[0020] At present, buildings that have no requirements for energy-saving operation of building equipment do not install ultrasonic energy meters. However, buildings that have such requirements need to install energy meters on the water distributors in the refrigeration room to form energy devices.

[0021] Secondly, considering the maintenance of the energy meter, a bypass riser and valve must be installed at the pipeline where the energy meter is installed. Valves must be installed before and after the riser containing the energy meter. Normally, the bypass pipe valve should be closed and the valves before and after the meter should be opened; when the energy meter is being maintained, the valves before and after the meter should be closed and the valve on the bypass riser should be opened.

[0022] The energy meter is set on the riser of the energy device of the manifold. The bypass riser is often pulled out horizontally from the original riser, vertically upward, and horizontally connected. The bypass pipe of this method is not beautiful in appearance, and has a longer length and elbows than the original pipeline. The instantaneous fluid path change during maintenance will increase the head loss along the pipeline and the local head loss, which is easy to cause flow separation and vortex. The formation and attenuation of the vortex and the rapid change of the flow velocity distribution will consume the mechanical energy of the fluid. Utility Model Content

[0023] The utility model solves the problem of large consumption of fluid mechanical energy caused by vortex caused by head loss in the existing energy meter setting, and the technical solution adopted is:

[0024] A Y-shaped energy device for a water distributor in a refrigeration room, characterized in that it comprises: two vertical pipes connected to the water distributor, and both ends of the two vertical pipes are respectively connected to a Y-shaped tee, and a valve is provided between the water distributor and the vertical pipes;

[0025] The two risers include an energy meter riser and a bypass riser. The energy meter riser is provided with an energy meter, and a butterfly valve in front of the meter and a temperature measuring valve behind the meter are respectively provided on both sides of the energy meter. The bypass riser is provided with a bypass pipe butterfly valve.

[0026] A floor bracket is arranged under the water distributor.

[0027] Preferably, the energy content meter riser and the bypass riser have the same length.

[0028] Preferably, a horizontal support is provided on the vertical pipe.

[0029] Preferably, a heat insulating member is provided at the contact portion between the horizontal support and the vertical pipe.

[0030] Preferably, the thermal insulation member is a wooden pallet.

[0031] Preferably, the energy content meter riser and the bypass riser are both made of seamless steel pipes.

[0032] Preferably, the energy meter riser and the bypass riser are sequentially coated with a rubber-plastic insulation layer and an aluminum skin layer from the inside to the outside.

[0033] The beneficial effects of the utility model are:

[0034] The Y-shaped energy device of the water distributor in the refrigeration room provided by the utility model is provided with two vertical pipes and a Y-shaped tee is connected to each end of the two vertical pipes. The two vertical pipes arranged in the Y-shape have almost the same head loss, which is not easy to cause flow separation and vortex, thereby reducing the consumption of fluid mechanical energy. In addition, the Y-shaped arrangement is bilaterally symmetrical, which saves space and has a harmonious and beautiful appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0036] Figure 1 The utility model is a schematic diagram of the structure of a Y-shaped energy device of a water distributor in a refrigerating machine room. DETAILED DESCRIPTION

[0037] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0038] In the description of the utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0041] like Figure 1 As shown, the utility model provides a Y-shaped energy device for a water distributor in a refrigeration room, comprising: two risers vertically connected to the water distributor 2, and the two ends of the two risers are respectively connected to a Y-shaped tee (respectively an inlet tee 4 connected to the water distributor end and an outlet tee 11 at the other end), and a valve 3 is provided between the water distributor 1 and the riser, and the valve 3 is preferably an electric valve;

[0042] The two risers include an energy meter riser 5 and a bypass riser 6. The energy meter riser 5 is provided with an energy meter 9, and a butterfly valve 7 is provided before the meter on one side of the energy meter 9, and a temperature measuring valve 10 is provided after the meter on the other side;

[0043] The bypass riser 6 is provided with a bypass pipe butterfly valve 8;

[0044] A floor stand 1 is provided under the water distributor 2 .

[0045] The Y-shaped energy device of the water distributor in the refrigeration room provided by the utility model is provided with two vertical pipes and a Y-shaped tee is connected to each end of the two vertical pipes. The two vertical pipes arranged in the Y-shape have almost the same head loss, which is not easy to cause flow separation and vortex, thereby reducing the consumption of fluid mechanical energy. In addition, the Y-shaped arrangement is bilaterally symmetrical, saves space and has a harmonious and beautiful appearance; it can meet the requirements of building energy-saving control, control the number of operating units of the refrigeration unit and its corresponding water pump according to the requirements of indoor load changes, adjust the cooling capacity to the maximum extent, save energy, and its integrated partial load performance coefficient (IPLV) meets the requirements of the corresponding standards.

[0046] A further improvement is that the energy content meter riser 5 and the bypass riser 6 have the same length.

[0047] A further improvement is that the center points of all bypass pipe butterfly valves 8 are on the same horizontal line; the center points of all energy meters 9 are on the same horizontal line; the center points of all butterfly valves 7 before the meters are on the same horizontal line; the center points of all temperature measuring valves 10 after the meters are on the same horizontal line.

[0048] A further improvement is that all the risers connected to the water distributor 2 are provided with horizontal brackets 12. Specifically, the middle position between the energy meter 9 and the temperature measuring valve 10 after the meter is used as the reference horizontal position, and a horizontal channel steel is set at this horizontal position. The horizontal bracket 12 on the channel steel is fixed to each riser 5 containing the energy meter and the bypass riser 6. The horizontal bracket 12 is preferably made of hot-dip galvanized flat steel.

[0049] A further improvement is that a heat insulating member is provided at the contact portion between the horizontal support 12 and the vertical pipe to form isolation and avoid the formation of cold / heat bridges.

[0050] A further improvement is that the thermal insulation member is preferably a wooden pallet.

[0051] A further improvement is that the energy meter riser 5 and the bypass riser 6 are both made of seamless steel pipes.

[0052] A further improvement is that the energy meter riser 5 and the bypass riser 6 are sequentially coated with a rubber-plastic insulation layer and an aluminum skin layer from the inside to the outside.

[0053] Further improvement is that the energy meter 9 includes: a calculator, a flow sensor and a paired temperature sensor. Each energy meter 9 needs to be connected to a strong power supply line separately, and needs to be connected to the temperature measuring valve 10 after the meter and the temperature measuring valve before the meter on the water collector riser.

[0054] A further improvement is that a filter is provided at the water inlet of the energy meter 9.

[0055] The specific applications are as follows:

[0056] The water distributor 2 is made of a seamless steel pipe with a diameter of 600 mm, the floor bracket 1 is made of 10# channel steel, the lower end of the floor bracket 1 is fixed to the ground, and the lower end of the water distributor 2 is fixed to the upper end of the floor bracket 1 by welding.

[0057] The energy meter riser comprises an energy meter riser 5, an access tee 4, an outlet tee 11, a valve 3, a butterfly valve 7 before the meter, an energy meter 9, a temperature measuring valve 10 after the meter and a horizontal support 12. The energy meter riser 5 is made of 90mm, 160mm, 270mm and 325mm seamless steel pipes respectively. The bottom of the energy meter riser 5 is connected to the right branch of the access tee 4. The access tee 4 is also made of seamless steel pipes, and its diameter matches that of the energy meter riser 5. The access tee 4 is formed by gas cutting and welding three straight pipes of two short and one long seamless steel pipes to form a tee shape, and a seamless steel pipe elbow with a matching pipe diameter is welded at the two short straight pipes to form a complete access tee. The long straight pipe of the access tee is gas cut into two parts and a valve 3 is installed in the middle. The lower straight pipe of the valve 3 is welded to the water distributor 1. A branch of the access tee 4 is connected to the energy meter riser 5, and the energy meter riser 5 is cut into four straight pipes. The butterfly valve 7, energy meter 9 and temperature measuring valve 10 are installed in the vertical direction from bottom to top. The right branch of the tee 11 is connected to the top straight pipe of the energy meter riser 5. The method of connecting the tee 11 is exactly the same as that of the access tee 4, but the installation direction is opposite and there is no electric valve. The main port of the access tee 4 is downward, and the two branches are upward; the two branches of the tee 11 are downward, and the main port is upward. Finally, the main port of the tee 11 is connected to the subsequent pipe section.

[0058] The bypass riser comprises a bypass riser 6, an access tee 4, an outlet tee 11, a bypass pipe butterfly valve 8, a valve 3 and a horizontal support 12. The methods of accessing the tee 4 and the outlet tee 11 and the installation method of the valve 3 are as described in the previous paragraph. The bypass riser 6 is made of 90mm, 160mm, 270mm and 325mm seamless steel pipes respectively, and the bypass riser 6 is gas-cut into two straight pipes, and the bypass pipe butterfly valve 8 is installed in the middle. The lower end straight pipe after gas cutting is connected to the left branch port of the access tee 4, and the upper end straight pipe is connected to the left branch port of the outlet tee 11.

[0059] The diameters of each incoming tee 4, outgoing tee 11 and the energy meter riser 5 and bypass riser 6 connected thereto are different, but the centers of the energy meter riser 5 and bypass riser 6, the front butterfly valve 7, the bypass pipe butterfly valve 8, the energy meter 9 and the post-meter temperature measuring valve 10 are on the same horizontal line.

[0060] The middle position between the energy meter 9 and the temperature meter 10 is used as a reference horizontal position. A horizontal channel steel is arranged at this horizontal position. The horizontal bracket 12 on the channel steel is fixed to each energy meter riser 5 and bypass riser 6.

[0061] The horizontal support 12 is made of 40×4 hot-dip galvanized flat steel and a heat-insulating wooden support.

[0062] In order to realize the normal operation of the calculator, flow sensor and paired temperature sensor contained in the energy meter 9, each energy meter 9 needs to be connected to a strong power supply line separately, and needs to be connected to the temperature measuring valve 10 after the meter and the temperature measuring valves before and after the meter on the water collector riser.

[0063] The energy meter 9 includes a flow sensor and a calculator.

[0064] According to the design requirements of household heating metering, a filter shall be installed before the water inlet of energy meter 9; the filter shall be cleaned and maintained regularly.

[0065] The energy meter 9 is installed horizontally or vertically, and the direction of the arrow on the energy meter 9 (including the filter) must be consistent with the direction of water flow in the HVAC pipe; the return pipe must not be used for water supply to cause water backflow to avoid impurities in the water damaging the energy meter; when installed vertically, the water flow direction must be upward.

[0066] Be careful when installing the temperature sensor. Do not pull it with excessive force and do not overtighten the fixing bolts to prevent damage to the threads. After the temperature sensor is installed, a temperature measuring valve 10 is formed behind the table.

[0067] Before installing the energy meter 9, the HVAC pipes must be cleaned; the inlet and return ends of the energy meter 9 should have sufficient length of straight pipes, the straight pipe at the front end of the inlet should not be less than 10 times the pipe diameter, and the straight pipe at the front end of the outlet should not be less than 5 times the pipe diameter; when installed at the confluence of two return pipelines, the energy meter 9 must be at a straight pipe section of 10 times the pipe diameter from the connector (such as a T-joint) to ensure that the water temperatures of the two pipelines can be evenly mixed.

[0068] When installing the temperature sensor, make sure that the bottom of the energy meter probe is inserted about 5 mm from the bottom of the protective sleeve. When the temperature is above 100°C, use a high-temperature energy meter probe.

[0069] The applicable model of energy meter 9 is determined by the system flow rate rather than the system pipe diameter. The nominal diameter and model of the energy meter should be determined according to the commonly used flow rate.

[0070] The energy meter 9 is a relatively expensive precision instrument. You must be careful when picking it up and putting it down. Do not pull the calculator or temperature sensor wires; do not squeeze or collide the temperature sensor; do not get close to high temperature heat sources such as electric welding to avoid damaging the meter and affecting normal use.

[0071] During the use of the energy meter 9, the valve on the pipeline cannot be completely closed. If there is no hot water flowing through the pipeline for a long time, the energy meter will be frozen.

[0072] The calculator (display) of the energy meter 9 must not be immersed in water.

[0073] The energy meter 9 is a measuring instrument and must be calibrated regularly in accordance with the standards, and the battery must be replaced during calibration.

[0074] When the heat exchange system is working normally, if the instantaneous flow of energy meter 9 is found to be significantly reduced, it means that there is too much dirt in the filter, which makes the pipe narrower and the water flow reduced. At this time, the filter should be cleaned in time.

[0075] The outside of the energy meter 9 should be protected to prevent human vandalism or accidental damage.

[0076] When the energy meter riser 5 and the bypass riser 6 are connected to the incoming tee 4 and the outgoing tee 11, the lengths should be consistent to form two symmetrical Y-shaped structures. When inspecting the energy meter 9, close the butterfly valve 7 in front of the meter and the temperature measuring valve 10 behind the meter, and open the bypass pipe butterfly valve 8. The instantaneous head loss changes less, which is not easy to cause flow separation and vortex.

[0077] The scheme works as follows:

[0078] The paired temperature sensors are respectively installed on the pipes at the inlet and outlet of the heat exchange circuit. In the Y-shaped energy device of the water divider in this scheme, the temperature sensor at the outlet specifically refers to the temperature measuring valve 10 after the meter, and the energy sensor at the inlet is installed on the water collector pipe, which is not reflected in this scheme patent. The energy meter 9 includes a flow sensor and a calculator, and the flow sensor is installed on the return pipe. The flow sensor collects the flow signal, and the temperature sensor collects the temperature signals of the water inlet and return ends. The calculator will collect the flow signal and temperature signal, and after calculation and processing, display the heat released by the measured fluid from the water inlet to the return end. When water flows through the system, the heat released or absorbed by the system is accurately calculated and displayed by the calculator based on the flow collected by the flow sensor and the inlet and return water temperature signals collected by the paired temperature sensor, as well as the time the water flows.

[0079] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A Y-shaped energy device for a water distributor in a refrigeration room, characterized in that: include: Two vertical pipes are vertically connected to the water distributor, and both ends of the two vertical pipes are respectively connected to a Y-shaped tee, and a valve is provided between the water distributor and the vertical pipes; The two risers include an energy meter riser and a bypass riser. The energy meter riser is provided with an energy meter, and a butterfly valve in front of the meter and a temperature measuring valve behind the meter are respectively provided on both sides of the energy meter. The bypass riser is provided with a bypass pipe butterfly valve. A floor bracket is arranged under the water distributor.

2. The Y-shaped energy device for the water distributor in the refrigeration room according to claim 1, characterized in that: The energy content meter riser and the bypass riser have the same length.

3. The Y-shaped energy device for the water distributor in the refrigeration room according to claim 1, characterized in that: A horizontal support is arranged on the vertical pipe.

4. The Y-shaped energy device for the water distributor in the refrigeration room according to claim 3, characterized in that: A heat insulating member is provided at the contact portion between the horizontal support and the vertical pipe.

5. The Y-shaped energy device for the water distributor in the refrigeration room according to claim 4, characterized in that: The heat insulating member is a wooden support.

6. The Y-shaped energy device for a water distributor in a refrigeration room according to claim 1, characterized in that: The energy meter riser and the bypass riser are both made of seamless steel pipes.

7. The Y-shaped energy device for a water distributor in a refrigeration room according to claim 1, characterized in that: The energy meter riser and the bypass riser are sequentially coated with a rubber-plastic insulation layer and an aluminum skin layer from the inside to the outside.

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