JP4995869B2 - Local pump system in heat medium supply facility - Google Patents
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- JP4995869B2 JP4995869B2 JP2009146451A JP2009146451A JP4995869B2 JP 4995869 B2 JP4995869 B2 JP 4995869B2 JP 2009146451 A JP2009146451 A JP 2009146451A JP 2009146451 A JP2009146451 A JP 2009146451A JP 4995869 B2 JP4995869 B2 JP 4995869B2
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Description
この発明は、熱媒体供給施設におけるローカルポンプシステム及びその制御方法に関するものである。 The present invention relates to a local pump system in a heat medium supply facility and a control method thereof.
従来、熱媒体供給施設は、建物内に設けられる複数の、空気調和機や熱交換器等の２次側設備に、冷温熱源機から管路を通して導かれる冷水又は温水等の熱媒体の流量を、各２次側設備毎の空調負荷に応じて制御している。この制御は制御弁等により行ってきたが、特に、部分負荷時における制御弁の絞りによりエネルギーロスがあり、その改善策が求められていた。 Conventionally, a heat medium supply facility supplies a flow rate of a heat medium such as cold water or hot water led from a cold / hot heat source machine to a plurality of secondary equipment such as air conditioners and heat exchangers provided in a building through a pipeline. Control is performed according to the air conditioning load for each secondary-side facility. Although this control has been performed by a control valve or the like, there is an energy loss due to the restriction of the control valve particularly at the time of partial load, and an improvement measure has been demanded.
そこで、前記制御弁等を使わずに制御するシステムが考案され、可変負荷分だけの流量の熱媒体が流れるようにした、ローカルポンプと全体の熱媒体の流量を確保する１次側ポンプのシステム構成が提案された。 Therefore, a system for controlling without using the control valve or the like has been devised, and a system for a primary pump that secures a flow rate of the local pump and the entire heat medium, in which a heat medium having a flow rate corresponding to a variable load flows. A configuration was proposed.
このシステムは、図９に示すように、各ゾーン毎の２次側設備１に対応して、インバータ等の能力を可変可能な（以下、「インバータ等」という）ローカルポンプ３を設け、１次側ポンプ４により冷温熱源機２から送られてきた熱媒体の流量を各ローカルポンプ３毎に調整して熱媒体を２次側設備１に送っている。この場合、１次側ポンプ４の揚程受け持ち範囲は図９のイ→ロ→冷温熱源機２→ハであり、各ローカルポンプ３の揚程受け持ち範囲は図９のハ→ニ→２次側設備１→ホ→イである。これにより、前記従来のような制御弁による無駄なエネルギーロスをなくすことができた。これは特許文献１及び２も同じである。 As shown in FIG. 9, this system is provided with a local pump 3 capable of varying the capacity of an inverter or the like (hereinafter referred to as “inverter or the like”) corresponding to the secondary equipment 1 for each zone. The flow rate of the heat medium sent from the cool / heat source device 2 by the side pump 4 is adjusted for each local pump 3, and the heat medium is sent to the secondary equipment 1. In this case, the lifting range of the primary pump 4 is as follows: b → b → cooling / heating source 2 → c in FIG. 9, and the lifting range of each local pump 3 is c → d → secondary equipment 1 in FIG. → Ho → Lee. As a result, useless energy loss due to the conventional control valve can be eliminated. The same applies to Patent Documents 1 and 2.
しかしながら、図９に示すような熱媒体供給施設におけるローカルポンプシステムでは、ローカルポンプの圧力範囲において、以下の欠点がある。ローカルポンプは２次側設備毎のため小水量となる。そのため選定されるポンプの効率が低いとともにポンプの機種や形状が限定される。また、冷温熱源機から２次側設備までの配管の距離が長くなり、配管抵抗が大きくなるとローカルポンプは高揚程となる。従って、小水量・高揚程となってポンプの運転効率は低くなる。 However, the local pump system in the heat medium supply facility as shown in FIG. 9 has the following drawbacks in the pressure range of the local pump. The local pump has a small amount of water for each secondary facility. Therefore, the efficiency of the selected pump is low and the model and shape of the pump are limited. Moreover, when the distance of the piping from the cold / hot heat source machine to the secondary side equipment becomes long and the piping resistance increases, the local pump becomes a high head. Accordingly, the operation efficiency of the pump becomes low due to a small amount of water and a high head.
これは、次のことからも明らかである。ポンプの比速度ｎＳはポンプインペラの形状を示す量で、次の式で表され、通常最高効率点での値をとる。 This is also clear from the following. The specific speed n S of the pump is an amount indicating the shape of the pump impeller, and is expressed by the following formula, and normally takes a value at the highest efficiency point.
この式１から、揚程が大きくなるとｎＳが小さくなる。ｎＳは小さくなると同じ流量、回転数では、式１により揚程が大きくなり、図１０に示すように効率が落ちていることが分かる。なお、図１０は、社団法人日本産業機械工業会ポンプ技術者連盟編「ポンプニューハンドブック」昭和５９年２月２８日発行、発行所、日本工業出版株式会社の第３９頁の図２−９の「吐出し量とポンプ効率」から引用したものである。 From Equation 1, n S decreases as the head increases. As n S decreases, at the same flow rate and number of revolutions, the lift is increased according to Equation 1, and the efficiency decreases as shown in FIG. Note that FIG. 10 is the “Pump New Handbook” published on February 28, 1984, edited by the Japan Society of Industrial Machinery Manufacturers Pump Engineers Association, published on February 28, 1984. Quoted from “Discharge rate and pump efficiency”.
この発明はこのような従来技術を考慮したものであって、熱媒体供給施設におけるローカルポンプシステムにおいて、ローカルポンプを小水量、低揚程としてシステム全体の効率の高い、汎用性のあるシステム及びその制御方法を提供することを目的としたものである。 The present invention takes such a conventional technique into consideration, and in the local pump system in the heat medium supply facility, the local pump has a small amount of water and a low head, and the system is highly efficient and versatile, and its control. It is intended to provide a method.
そこで、請求項１の発明は、並列に接続された複数の２次側設備と、各２次側設備にそれぞれ備わる熱媒体を供給するための能力を可変可能なローカルポンプと、熱媒体を生成する冷温熱源機と、当該冷温熱源機で生成された熱媒体を前記ローカルポンプに供給する１次側ポンプと、前記冷温熱源機の出口側から前記各２次側設備へ熱媒体を供給する熱媒体供給主管と、前記各２次側設備から熱媒体を冷温熱源機の入口側に戻す熱媒体還り主管と、一端を前記熱媒体供給主管に他端を前記熱媒体還り主管に接続され、前記各２次側設備及び各ローカルポンプに前記熱媒体を供給する熱媒体供給枝管と、前記冷温熱源機に一番近い前記熱媒体供給枝管より冷温熱源機側の前記前記熱媒体供給主管と前記熱媒体還り主管との間にバイパス管とを備えた熱媒体供給施設において、前記バイパス管と冷温熱源機に一番近い前記熱媒体供給枝管との間の前記熱媒体供給主管に、熱媒体を前記冷温熱源機に一番近い前記熱媒体供給枝管の分岐点まで送る、能力を可変可能なブースターポンプを設け、前記冷温熱源機に対して前記ブースターポンプより後方であって、前記冷温熱源機の出口側から一番近い熱媒体供給枝管の分岐点の、冷温熱源機に対して手前の前記熱媒体供給主管と、前記冷温熱源機の入口側から一番近い熱媒体供給枝管の合流点の、冷温熱源機に対して手前の前記熱媒体還り主管とを結ぶ配管を設け、当該配管に流量計又は差圧計を設けた、ローカルポンプシステムとした。 Accordingly, the invention of claim 1 generates a plurality of secondary-side equipment connected in parallel, a local pump capable of varying the capacity for supplying the heat medium provided in each secondary-side equipment, and a heat medium. A cooling / heating source, a primary pump for supplying a heat medium generated by the cooling / heating source to the local pump, and a heat for supplying the heating medium from the outlet of the cooling / heating source to each secondary facility. A medium supply main pipe, a heat medium return main pipe for returning the heat medium from each secondary side equipment to the inlet side of the cold / hot heat source machine, one end connected to the heat medium supply main pipe and the other end connected to the heat medium return main pipe, A heat medium supply branch pipe that supplies the heat medium to each secondary side equipment and each local pump; and the heat medium supply main pipe that is closer to the cold / heat source device than the heat medium supply branch pipe that is closest to the cold / hot heat source machine ; A bypass pipe is provided between the heat medium return main pipe. In the heat medium supply facilities, the heat medium to supply main pipe, nearest the heat medium supplying heat medium to the cold heat source unit between the bypass pipe and cold heat source unit to the nearest the heat medium supply branch pipe A booster pump capable of variable capacity is provided to send to the branching point of the branch pipe, and the heat medium supply branch pipe that is behind the booster pump with respect to the cold / hot heat source machine and closest to the outlet side of the cold / hot heat source machine The heating medium supply main pipe in front of the cold / hot heat source machine at the branch point and the confluence of the heat medium supply branch pipe closest to the inlet side of the cold / hot heat source machine in front of the cold / heat source machine A local pump system was provided in which a pipe connecting the heat medium return main pipe was provided, and a flow meter or a differential pressure gauge was provided in the pipe .
また、請求項２の発明は、並列に接続された複数の２次側設備と、各２次側設備にそれぞれ備わる熱媒体を供給するための能力を可変可能なローカルポンプと、熱媒体を生成する冷温熱源機と、当該冷温熱源機で生成された熱媒体を前記ローカルポンプに供給する１次側ポンプと、前記冷温熱源機の出口側から前記各２次側設備へ熱媒体を供給する熱媒体供給主管と、前記各２次側設備から熱媒体を冷温熱源機の入口側に戻す熱媒体還り主管と、一端を前記熱媒体供給主管に他端を前記熱媒体還り主管に接続され、前記各２次側設備及び各ローカルポンプに前記熱媒体を供給する熱媒体供給枝管と、前記冷温熱源機に一番近い前記熱媒体供給枝管より冷温熱源機側の前記熱媒体供給主管と前記熱媒体還り主管との間にバイパス管とを備えた熱媒体供給施設において、前記複数の熱媒体供給枝管を、前記冷温熱源機に対して遠ざかる毎に複数の区画に分け、各区画ごとの前記冷温熱源機に一番近い熱媒体供給枝管の手前であって、前記バイパス管より前記冷温熱源機に対して後方の前記熱媒体供給主管に、熱媒体を前記冷温熱源機に一番近い前記熱媒体供給枝管の分岐点まで送る、能力を可変可能なブースターポンプを設け、前記各区画毎に、前記冷温熱源機に対して前記各ブースターポンプより後方であって、前記冷温熱源機の出口側から一番近い熱媒体供給枝管の分岐点の、冷温熱源機に対して手前の前記熱媒体供給主管と、前記冷温熱源機の入口側から一番近い熱媒体供給枝管の合流点の、冷温熱源機に対して手前の前記熱媒体還り主管とを結ぶ配管を設け、当該配管に流量計又は差圧計を設け、前記区画の各ブースターポンプによってすべてのローカルホンプが効率の高い運転が可能となるように前記区画を分けた、ローカルポンプシステムとした。 Further, the invention of claim 2 generates a plurality of secondary equipment connected in parallel, a local pump capable of varying the capacity for supplying a heat medium provided in each secondary equipment, and a heat medium. A cooling / heating source, a primary pump for supplying a heat medium generated by the cooling / heating source to the local pump, and a heat for supplying the heating medium from the outlet of the cooling / heating source to each secondary facility. A medium supply main pipe, a heat medium return main pipe for returning the heat medium from each secondary side equipment to the inlet side of the cold / hot heat source machine, one end connected to the heat medium supply main pipe and the other end connected to the heat medium return main pipe, A heat medium supply branch pipe for supplying the heat medium to each secondary side equipment and each local pump; the heat medium supply main pipe on the cold / heat source unit side closer to the heat medium supply branch pipe closest to the cold / heat source apparatus; Heat with a bypass pipe between the heat medium return main pipe In the body supply facilities, the plural heating medium supply branch pipe, into a plurality of compartments for each distance with respect to the cold heat source unit, in front of the cold heat source unit to the nearest heat medium supply branch pipe for each partition The heat capacity is variable from the bypass pipe to the heat medium supply main pipe behind the cold / hot heat source machine to the branch point of the heat medium supply branch pipe closest to the cold / hot heat source machine. A possible booster pump is provided , and for each section, at the branch point of the heat medium supply branch pipe that is behind the booster pump with respect to the cold / hot heat source machine and closest to the outlet side of the cold / hot heat source machine. The heat medium return main pipe before the cold / heat source unit at the confluence of the heat medium supply main pipe before the cold / heat source apparatus and the heat medium supply branch pipe closest to the inlet side of the cold / heat source machine A pipe connecting the Is provided a differential pressure gauge, all local Hong flop by the booster pump of the compartment divided the compartment so as to allow high operating efficiency, and a local pump system.
また、請求項３の発明は、前記請求項１又は２に記載のローカルポンプシステムにおいて、前記配管に設けられた流量計の、熱媒体供給主管から熱媒体還り主管への流量がゼロ以上でかつ極力ゼロと成るように前記各ブースターポンプの可変制御を行う、ローカルポンプシステムの制御方法とした。 The invention of claim 3 is the local pump system according to claim 1 or 2 , wherein the flow rate of the flow meter provided in the pipe is zero or more from the heat medium supply main pipe to the heat medium return main pipe. The control method for the local pump system is such that the booster pumps are variably controlled so as to be as small as possible.
また、請求項４の発明は、前記請求項１又は２に記載のローカルポンプシステムにおいて、前記配管に設けられた差圧計の、熱媒体供給主管の圧力値から熱媒体還り主管の圧力値を引いた差圧がゼロ以上でかつ極力ゼロと成るように前記各ブースターポンプの可変制御を行う、ローカルポンプシステムの制御方法とした。 According to a fourth aspect of the present invention, in the local pump system according to the first or second aspect , the pressure value of the heat medium return main pipe is subtracted from the pressure value of the heat medium supply main pipe of the differential pressure gauge provided in the pipe. The control method for the local pump system is such that the booster pumps are variably controlled so that the differential pressure is zero or more and zero as much as possible.
請求項１及び２の各発明によれば、冷温熱源機から２次側設備までの配管の距離が長い場合であっても、ブースターポンプを設けたことにより各２次側設備に熱媒体を押し込む力を分散させ、低揚程のポンプの効率の高い運転を可能とし、システム全体のポンプ動力の合計値を小さくする、汎用性のある熱媒体供給施設となる。また、配管に設けられた流量計又は差圧計によって、これらの流量又は差圧がゼロ以上であって、かつ、極力ゼロと成るように、各ブースターポンプの可変制御を行い、水量の大きいブースターポンプ側の揚程を高くし、水量の小さなローカルポンプ側の揚程を低くし、システム全体の効率が高くなる運転が可能となる。 According to each invention of Claim 1 and 2, even if it is a case where the distance of the piping from a cold / hot heat source machine to a secondary side installation is long, a heat carrier is pushed into each secondary side installation by providing a booster pump It becomes a versatile heat medium supply facility that distributes the force, enables high-efficiency operation of the low-lift pump, and reduces the total pump power of the entire system. In addition, by using a flow meter or differential pressure meter provided in the piping, each booster pump is variably controlled so that the flow rate or differential pressure is zero or more and zero as much as possible. The lift on the side is increased and the lift on the side of the local pump with a small amount of water is decreased, so that the operation of the entire system becomes possible.
また、請求項４及び５の発明によれば、前記冷温熱源機の出口側から一番近い熱媒体供給枝管の分岐点の手前の前記熱媒体供給主管と、前記冷温熱源機の入口側から一番近い熱媒体供給枝管の合流点の手前の前記熱媒体還り主管とを結ぶ配管を設け、当該配管に流量計又は差圧計を設け、これらの流量計又は差圧計の流量又は差圧がゼロ以上であってかつ極力ゼロと成るようにブースターポンプの可変制御を行っているため、水量の大きいブースターポンプ側の揚程を高くし、水量の小さいローカルポンプ側の揚程を低くし、システム全体の効率が高くなる運転が可能である。 According to the inventions of claims 4 and 5, the heat medium supply main pipe before the branch point of the heat medium supply branch pipe closest to the outlet side of the cold / hot heat source machine and the inlet side of the cold / hot heat source machine. A pipe connecting the heat medium return main pipe before the junction of the nearest heat medium supply branch pipe is provided, and a flow meter or a differential pressure gauge is provided in the pipe, and the flow rate or differential pressure of these flow meters or differential pressure gauges is Since the booster pump is variably controlled so that it is zero or more and zero as much as possible, the head of the booster pump with a large amount of water is raised and the head of the local pump with a small amount of water is lowered. Operation with high efficiency is possible.
この発明は、並列に接続された複数の２次側設備と、各２次側設備にそれぞれ備わる熱媒体を供給するためのインバータ等を有するローカルポンプと、熱媒体を生成する冷温熱源機と、当該冷温熱源機で生成された熱媒体を前記ローカルポンプに供給する１次側ポンプと、前記冷温熱源機の出口側から前記各２次側設備へ熱媒体を供給する熱媒体供給主管と、前記各２次側設備から熱媒体を冷温熱源機の入口側に戻す熱媒体還り主管と、一端を前記熱媒体供給主管に他端を前記熱媒体還り主管に接続され、前記各２次側設備及び各ローカルポンプに前記熱媒体を供給する熱媒体供給枝管と、前記熱媒体供給主管と前記熱媒体還り主管との間にバイパス管とを備えた熱媒体供給施設において、前記冷温熱源機と２次側設備との間に熱媒体を各ローカルポンプまで送る、インバータ等を有するブースターポンプを設けたローカルポンプシステムとし、これにより小水量のポンプを低揚程にでき、効率良く運転し、汎用性のあるものとした。 The present invention includes a plurality of secondary equipment connected in parallel, a local pump having an inverter or the like for supplying a heat medium provided in each secondary equipment, a cooling / heating source that generates a heat medium, A primary pump that supplies the local medium with the heat medium generated by the cold / hot heat source machine, a heat medium supply main pipe that supplies the heat medium from the outlet side of the cold / hot heat source machine to the secondary equipment, and A heat medium return main pipe for returning the heat medium from each secondary side equipment to the inlet side of the cold / hot heat source machine, one end connected to the heat medium supply main pipe and the other end to the heat medium return main pipe, In a heat medium supply facility comprising a heat medium supply branch pipe for supplying the heat medium to each local pump, and a bypass pipe between the heat medium supply main pipe and the heat medium return main pipe, the cold / heat source device 2 Heat medium between each side equipment Send to Karuponpu, the local pump system having a booster pump having an inverter, etc., This allows the pump of small amount of water in low head, efficiently operated, and as a versatile.
以下、この発明の実施例１を図に基づいて説明する。
図１は、この発明に係る熱媒体供給施設のローカルポンプシステムの全体構成図である。この熱媒体供給施設のローカルポンプシステムは、２次側設備１が、例えば建物のエリア毎に設置される。この２次側設備１が空調機であれば空調エリアごとに系統別の給気ダクトが接続される。また、前記空調機の冷温水コイルには冷温熱源機２から冷水又は温水等の熱媒体が供給され、このような空調機等の２次側設備１で熱交換され、前記冷温熱源機２側に戻るようになっている。
Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 is an overall configuration diagram of a local pump system of a heat medium supply facility according to the present invention. In the local pump system of the heat medium supply facility, the secondary equipment 1 is installed, for example, for each area of a building. If the secondary equipment 1 is an air conditioner, a system-specific air supply duct is connected to each air conditioning area. The cold / hot water coil of the air conditioner is supplied with a heat medium such as cold water or hot water from the cold / hot heat source machine 2, and heat is exchanged in the secondary equipment 1 such as the air conditioner, and the cold / hot heat source machine 2 side. To come back.
また、例えば複数のフロア毎に設置された前記２次側設備１は相互に並列に接続され、前記各２次側設備１に、インバータ等を有するローカルポンプ３が備えられ、前記冷温熱源機２で生成された熱媒体を前記ローカルポンプ３に供給する１次側ポンプ４が設けられている。また、前記冷温熱源機２の出口側から前記各２次側設備１へ熱媒体を供給する熱媒体供給主管５と、前記各２次側設備１から熱媒体を前記冷温熱源機２の入口側に戻す熱媒体還り主管６とが設けられ、一端を前記熱媒体供給主管５に、他端を前記熱媒体還り主管６にそれぞれ接続され、前記各２次側設備１及び各ローカルポンプ３に前記熱媒体を供給する複数の熱媒体供給枝管７を備え、さらに、前記熱媒体供給主管５と前記熱媒体還り主管６との間にバイパス管９を備えた熱媒体供給施設から成る。そして、前記冷温熱源機２から直近の前記熱媒体供給枝管７の分岐点までの前記熱媒体供給主管５に、熱媒体を各熱媒体供給枝管７の前記各ローカルポンプ３まで送る、インバータ等を有するブースターポンプ８が設けられている。なお、この実施例１では、前記冷温熱源機２と１次側ポンプ４は、２組設けられている。 In addition, for example, the secondary equipment 1 installed for each of a plurality of floors is connected in parallel to each other, and each secondary equipment 1 is provided with a local pump 3 having an inverter or the like. The primary side pump 4 which supplies the heat medium produced | generated by this to the said local pump 3 is provided. Further, a heat medium supply main pipe 5 for supplying a heat medium from the outlet side of the cold / hot heat source machine 2 to the secondary equipment 1, and an inlet side of the cold / hot heat source machine 2 for supplying the heat medium from the secondary equipment 1 And a heat medium return main pipe 6 to be connected to the heat medium return main pipe 5 and one end connected to the heat medium return main pipe 6. The secondary side equipment 1 and the local pumps 3 are connected to the heat medium return main pipe 6. A heat medium supply facility is provided which includes a plurality of heat medium supply branch pipes 7 for supplying a heat medium, and further includes a bypass pipe 9 between the heat medium supply main pipe 5 and the heat medium return main pipe 6. An inverter that sends the heat medium to the heat medium supply main pipe 5 from the cold / hot heat source unit 2 to the nearest branch point of the heat medium supply branch pipe 7 to the local pumps 3 of the heat medium supply branch pipes 7. Etc. are provided. In the first embodiment, two sets of the cold / hot heat source device 2 and the primary pump 4 are provided.
この実施例１の場合、前記１次側ポンプ４の揚程受け持ち範囲は図１のイ→ロ→冷温熱源機２→ハまでである。また、ブースターポンプ８の揚程受け持ち範囲は、ハ→ニ及びト→イである。また、各ローカルポンプ３の揚程受け持ち範囲は、ニ→ホ→２次側設備１→ヘ→トである。 In the case of the first embodiment, the lifting range of the primary pump 4 is from A to B in FIG. 1 to the cool / heat source unit 2 to C. Further, the lifting range of the booster pump 8 is C → D and G → B. The range of lift of each local pump 3 is as follows: D → E → Secondary equipment 1 → F → G.
図２はこの実施例１の圧力線図である。図中(イ)〜（ト）は、図１の同じ文字（イ）〜（ト）の位置の圧力を示す。このようにブースターポンプ８を配置することで、揚程がポンプごとに分散するので効率の高い運転が可能となり、システム全体のポンプ動力の合計値を小さくできる。また、このようにブースターポンプ８を熱媒体供給主管５に設けた場合、後述の実施例２の各熱媒体供給枝管７に設けた場合に比べブースターポンプ８の流量は大きくなり、ポンプ効率も高い。 FIG. 2 is a pressure diagram of the first embodiment. In the figure, (a) to (g) indicate pressures at the positions of the same letters (a) to (g) in FIG. By arranging the booster pump 8 in this manner, the head is dispersed for each pump, so that highly efficient operation is possible, and the total value of pump power of the entire system can be reduced. Further, when the booster pump 8 is provided in the heat medium supply main pipe 5 as described above, the flow rate of the booster pump 8 becomes larger than that provided in each heat medium supply branch pipe 7 of Example 2 described later, and the pump efficiency is also increased. high.
次に、この発明の実施例２の熱媒体供給施設のローカルポンプシステムについて説明する。図３はシステムの全体構成図を示す。 Next, a local pump system of a heat medium supply facility according to Embodiment 2 of the present invention will be described. FIG. 3 shows an overall configuration diagram of the system.
この実施例２のものは、ブースターポンプ８の配置が実施例１と異なり、各熱媒体供給枝管７のローカルポンプ３に直列に夫々配設されている。他の構成は実施例１と同じである。 The second embodiment differs from the first embodiment in the arrangement of the booster pump 8 and is arranged in series with the local pump 3 of each heat medium supply branch pipe 7. Other configurations are the same as those of the first embodiment.
この実施例２の場合、前記１次側ポンプ４の揚程受け持ち範囲は図３のイ→ロ→冷温熱源機２→ハまでである。また、ブースターポンプ８及びローカルポンプ３の揚程受け持ち範囲は、ハ→ニ→ホ→２次側設備１→ヘ→ト→イである。図４はこの実施例２の圧力線図である。図中(イ)〜（ト）は、図３の同じ文字（イ）〜（ト）の位置の圧力を示す。 In the case of the second embodiment, the lifting range of the primary pump 4 is from A to B in FIG. 3 to the cool / heat source unit 2 to C. Further, the lifting range of the booster pump 8 and the local pump 3 is as follows: C → D → E → secondary equipment 1 → F → G → B. FIG. 4 is a pressure diagram of the second embodiment. In the figure, (a) to (g) indicate pressures at the positions of the same letters (a) to (g) in FIG.
次に、この発明の実施例３の熱媒体供給施設のローカルポンプシステムについて説明する。図５はシステムの全体構成図を示す。 Next, a local pump system of a heat medium supply facility according to Embodiment 3 of the present invention will be described. FIG. 5 shows an overall configuration diagram of the system.
この実施例３のものは、前記冷温熱源機２から導出された熱媒体供給主管が長い場合に適用するもので、ブースターポンプ８の配置が実施例１及び２と異なる。一つのブースターポンプ８ａは、前記冷温熱源機２から直近の熱媒体供給枝管７までの熱媒体供給主管５に設けられ、他のブースターポンプ８ｂは、前記冷温熱源機２から導出された熱媒体供給主管５であって、複数の熱媒体供給枝管７と複数の熱媒体供給枝管７との間の熱媒体供給主管５に設けられている。他の構成は実施例１と同じである。また、前記他のブースターポンプ８ｂは、熱媒体供給主管５の長さがさらに長くなった場合等、必要に応じて複数設けられる。 The third embodiment is applied when the heat medium supply main pipe led out from the cold / hot heat source device 2 is long, and the arrangement of the booster pump 8 is different from those of the first and second embodiments. One booster pump 8a is provided in the heat medium supply main pipe 5 from the cold / hot heat source apparatus 2 to the nearest heat medium supply branch pipe 7, and the other booster pump 8b is a heat medium derived from the cold / heat source apparatus 2. The supply main pipe 5 is provided in the heat medium supply main pipe 5 between the plurality of heat medium supply branch pipes 7 and the plurality of heat medium supply branch pipes 7. Other configurations are the same as those of the first embodiment. A plurality of the other booster pumps 8b are provided as necessary when the length of the heat medium supply main pipe 5 is further increased.
この実施例３の場合、前記１次側ポンプ４の揚程受け持ち範囲は図５のイ→ロ→冷温熱源機２→ハまでである。また、ブースターポンプ８ａの同範囲は図５のハ→ニ及びル→イまでであり、ローカルポンプ３ａの同範囲は図５のニ→ホ→２次側設備１→ヌ→ルである。また、ブースターポンプ８ｂの揚程受け持ち範囲は、図５のニ→ヘ及びリ→ルであり、ローカルポンプ３ｂの同範囲はヘ→ト→２次側設備１→チ→リである。図６はこの実施例３の圧力線図である。図中(イ)〜（ル）は、図５の同じ文字（イ）〜（ル）の位置の圧力を示す。 In the case of the third embodiment, the lifting range of the primary pump 4 is from A to B in FIG. 5 to the cool / heat source unit 2 to C. Further, the same range of the booster pump 8a is up to C → D and L → I in FIG. 5, and the same range of the local pump 3a is D → E → secondary equipment 1 → N → L in FIG. Also, lift charge range of the booster pump 8b is a two-→ f and Li → Le in FIG. 5, the range of the local pump 3b is f → preparative → 2 primary equipment 1 → switch → Li. FIG. 6 is a pressure diagram of the third embodiment. In the figure, (a) to (le) indicate the pressures at the positions of the same letters (a) to (le) in FIG.
前記実施例１〜３のシステムにおいて、ポンプの運転効率を優先し、ブースターポンプ８及びローカルポンプ３の夫々の受け持つ揚程を考えたとき、水量の大きいブースターポンプ８側の揚程を極力高くし、逆に水量の小さいローカルポンプ側の揚程は低くなるようにすることが好ましい。同時に、図７に示すように前記冷温熱源機２の出口側から一番近い熱媒体供給枝管７の分岐点の手前の前記熱媒体供給主管５のＡ点と、前記冷温熱源機２の入口側から一番近い熱媒体供給枝管７の合流点の手前の前記熱媒体還り主管６のＡ´点とを結ぶ配管を設け、当該配管に流量計１０を設け、この流量計１０の流量がゼロ以上でかつ極力ゼロと成るように前記ブースターポンプ８の可変制御を行う。この時、圧力ＰＡ≦ＰＡ´となっていることが必要である。また、図８は、図７の流量計１０に代えて差圧計１１を設けたもので、この場合も、差圧計１１の差圧がゼロ以上でかつ極力ゼロと成るように前記ブースターポンプ８の可変制御を行う。 In the systems of the first to third embodiments, when the operating efficiency of the pump is prioritized and the heads of the booster pump 8 and the local pump 3 are considered, the head on the booster pump 8 side with a large amount of water is increased as much as possible, In addition, it is preferable that the head on the local pump side with a small amount of water be low. At the same time, as shown in FIG. 7, the point A of the heat medium supply main pipe 5 before the branch point of the heat medium supply branch pipe 7 closest to the outlet side of the cold / hot heat source machine 2 and the inlet of the cold / hot heat source machine 2 A pipe connecting the point A ′ of the heat medium return main pipe 6 before the junction of the heat medium supply branch pipe 7 closest to the side is provided, and a flow meter 10 is provided in the pipe, and the flow rate of the flow meter 10 is The booster pump 8 is variably controlled so as to be zero or more and zero as much as possible. At this time, it is necessary that the pressure P A ≦ P A ′ . Further, FIG. 8 is provided with a differential pressure gauge 11 in place of the flow meter 10 of FIG. 7, and in this case, the booster pump 8 is configured so that the differential pressure of the differential pressure gauge 11 is zero or more and zero as much as possible. Perform variable control.
また、図７及び図８は実施例１に対応したものであるが、実施例２及び３についても適用できる。実施例２及び３場合も、流量計１０又は差圧計１１を設ける配管は、前記冷温熱源機２の出口側から一番近い熱媒体供給枝管７の分岐点の手前の前記熱媒体供給主管５のＡ点と、前記冷温熱源機２の入口側から一番近い熱媒体供給枝管７の合流点の手前の前記熱媒体還り主管６のＡ´点との間に設ける。また、実施例３の場合は、前記実施例１の位置に加え、さらに、図５における各ブースターポンプ８ｂの次の熱媒体供給枝管７の分岐点の手前の熱媒体供給主管５のＡ点と、当該熱媒体供給枝管７と熱媒体還り主管６との合流点の手前の熱媒体還り主管６のＡ´点との間に、前記流量計１０又は差圧計１１を有する前記配管を設け、当該流量計１０又は差圧計１１の流量又は差圧をゼロ以上でかつ極力ゼロと成るように相応する各ブースターポンプ８の可変制御する場合もある。 7 and 8 correspond to the first embodiment, but the present invention can also be applied to the second and third embodiments. Also in the second and third embodiments, the pipe provided with the flow meter 10 or the differential pressure gauge 11 is the heat medium supply main pipe 5 before the branch point of the heat medium supply branch pipe 7 closest to the outlet side of the cold / hot heat source machine 2. Between the point A and the point A ′ of the heat medium return main pipe 6 before the junction of the heat medium supply branch pipe 7 closest to the inlet side of the cold / hot heat source unit 2. In the case of the third embodiment, in addition to the position of the first embodiment, the point A of the heat medium supply main pipe 5 before the branch point of the heat medium supply branch pipe 7 next to each booster pump 8b in FIG. And the pipe having the flow meter 10 or the differential pressure gauge 11 is provided between the heat medium supply branch pipe 7 and the A ′ point of the heat medium return main pipe 6 before the junction of the heat medium supply branch pipe 7 and the heat medium return main pipe 6. In some cases, the corresponding booster pumps 8 are variably controlled so that the flow rate or differential pressure of the flow meter 10 or the differential pressure meter 11 is zero or more and zero as much as possible.
１ ２次側設備 ２ 冷温熱源機
３ ローカルポンプ ４ １次側ポンプ
５ 熱媒体供給主管 ６ 熱媒体還り主管
７ 熱媒体供給枝管 ８ ブースターポンプ
９ バイパス管 １０ 流量計
１１ 差圧計
1 Secondary equipment 2 Cooling / heating source 3 Local pump 4 Primary pump
5 Heat medium supply main pipe 6 Heat medium return main pipe 7 Heat medium supply branch pipe 8 Booster pump 9 Bypass pipe 10 Flow meter 11 Differential pressure gauge
Claims (4)
前記バイパス管と冷温熱源機に一番近い前記熱媒体供給枝管との間の前記熱媒体供給主管に、熱媒体を前記冷温熱源機に一番近い前記熱媒体供給枝管の分岐点まで送る、能力を可変可能なブースターポンプを設け、
前記冷温熱源機に対して前記ブースターポンプより後方であって、前記冷温熱源機の出口側から一番近い熱媒体供給枝管の分岐点の、冷温熱源機に対して手前の前記熱媒体供給主管と、前記冷温熱源機の入口側から一番近い熱媒体供給枝管の合流点の、冷温熱源機に対して手前の前記熱媒体還り主管とを結ぶ配管を設け、当該配管に流量計又は差圧計を設けたことを特徴とする、ローカルポンプシステム。 A plurality of secondary equipment connected in parallel, a local pump capable of varying the capacity for supplying the heat medium provided in each secondary equipment, a cooling / heating source that generates the heating medium, and the cooling / heating source A primary pump that supplies the heat medium generated by the machine to the local pump, a heat medium supply main pipe that supplies the heat medium from the outlet side of the cold / hot heat source machine to the secondary equipment, and the secondary A heat medium return main pipe for returning the heat medium from the side equipment to the inlet side of the cold / hot heat source machine, one end connected to the heat medium supply main pipe and the other end to the heat medium return main pipe, each secondary side equipment and each local pump Between the heat medium supply main pipe and the heat medium return main pipe closer to the cold / heat source unit than the heat medium supply branch pipe closest to the cold / hot heat source machine. In a heat medium supply facility equipped with a bypass pipe
The heat medium is sent to the heat medium supply main pipe between the bypass pipe and the heat medium supply branch pipe closest to the cold / hot heat source machine to the branch point of the heat medium supply branch pipe closest to the cold / hot heat source machine. A booster pump with variable capacity is installed.
The heat medium supply main pipe in front of the cold / heat source device at the branch point of the heat medium supply branch pipe that is behind the booster pump with respect to the cold / heat source apparatus and is closest to the outlet side of the cold / heat source apparatus And a pipe connecting the heat medium return main pipe in front of the cold / heat source unit at the confluence of the heat medium supply branch pipe closest to the inlet side of the cold / hot heat source machine, A local pump system characterized by a pressure gauge .
前記複数の熱媒体供給枝管を、前記冷温熱源機に対して遠ざかる毎に複数の区画に分け、各区画ごとの前記冷温熱源機に一番近い熱媒体供給枝管の手前であって、前記バイパス管より前記冷温熱源機に対して後方の前記熱媒体供給主管に、熱媒体を前記冷温熱源機に一番近い前記熱媒体供給枝管の分岐点まで送る、能力を可変可能なブースターポンプを設け、
前記各区画毎に、前記冷温熱源機に対して前記各ブースターポンプより後方であって、前記冷温熱源機の出口側から一番近い熱媒体供給枝管の分岐点の、冷温熱源機に対して手前の前記熱媒体供給主管と、前記冷温熱源機の入口側から一番近い熱媒体供給枝管の合流点の、冷温熱源機に対して手前の前記熱媒体還り主管とを結ぶ配管を設け、当該配管に流量計又は差圧計を設け、
前記区画の各ブースターポンプによってすべてのローカルホンプが効率の高い運転が可能となるように前記区画を分けたことを特徴とする、ローカルポンプシステム。 A plurality of secondary equipment connected in parallel, a local pump capable of varying the capacity for supplying the heat medium provided in each secondary equipment, a cooling / heating source that generates the heating medium, and the cooling / heating source A primary pump that supplies the heat medium generated by the machine to the local pump, a heat medium supply main pipe that supplies the heat medium from the outlet side of the cold / hot heat source machine to the secondary equipment, and the secondary A heat medium return main pipe for returning the heat medium from the side equipment to the inlet side of the cold / hot heat source machine, one end connected to the heat medium supply main pipe and the other end to the heat medium return main pipe, each secondary side equipment and each local pump A bypass between the heat medium supply branch pipe for supplying the heat medium to the heat medium supply main pipe and the heat medium return main pipe closer to the cold / hot heat source machine than the heat medium supply branch pipe closest to the cold / hot heat source machine In a heat medium supply facility equipped with a pipe,
The plurality of heat medium supply branch pipes are divided into a plurality of sections each time the heat medium supply branch pipes are moved away from the cold / hot heat source machine, and in front of the heat medium supply branch pipes closest to the cold / hot heat source machine for each section, A booster pump with variable capacity that sends the heat medium to the branch point of the heat medium supply branch pipe closest to the cold / heat source device to the heat medium supply main pipe behind the cold / heat source apparatus from the bypass pipe Provided ,
For each of the sections, with respect to the cold / hot heat source machine at the branch point of the heating medium supply branch pipe that is behind the booster pump and is closest to the cold / hot heat source machine from the outlet side. Providing a pipe connecting the heat medium supply main pipe in front and the heat medium return main pipe in front of the heat / heat source machine at the junction of the heat medium supply branch pipe closest to the inlet side of the cold / heat source machine; Provide a flow meter or differential pressure gauge on the pipe,
The local pump system characterized in that the compartments are divided so that all local pumps can be operated efficiently by the booster pumps of the compartments .
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