JP4565765B2 - Hot water supply piping design support system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is provided with pipe information input means for inputting arrangement information and pipe diameter information of hot water supply piping, and equipment information input for inputting equipment information and arrangement information of hot water supply equipment and hot water distribution equipment connected to the hot water supply pipe. The present invention relates to a hot water supply piping design support system provided with means.
[0002]
[Prior art]
Conventionally, as this type of hot water supply piping design support system, the designer of the hot water supply piping empirically sets the pipe diameter of the hot water supply piping according to the hot water supply capability of the hot water supply equipment, Supply the arrangement information and pipe diameter information of the supply pipe, and supply hot water to the hot water supply pipe to determine whether it will exceed the hot water supply capacity of the hot water supply equipment even if hot water is supplied at the rated flow rate. Maximum hot water supply table of equipment, rated flow table showing the relationship between the hot water distribution equipment and the rated flow based on the usage pattern of the hot water distribution equipment, and the flow rate of hot water supplied to the pipe used for the hot water supply pipe and pressure loss The pressure loss parameter indicating the relationship is used to calculate and obtain a cumulative pressure loss from the hot water supply device of the hot water pipe to the location of the hot water distribution device, and the hot water supply device Obtain the rated allowable pressure loss that can supply hot water at the rated flow rate for the distribution equipment from the maximum hot water supply table, and check whether the design satisfies the rated allowable pressure loss when the hot water distribution device is used at the rated flow rate. The warm water supply piping was designed in the procedure.
[0003]
[Problems to be solved by the invention]
However, when the hot water supply pipe is designed in such a procedure, the calculation for confirming whether or not the maximum allowable pressure loss is satisfied becomes very complicated. Specifically, for example, the out-of-machine head of the hot water supply device is not represented by a simple relational expression with respect to the hot water supply flow rate or the hot water supply temperature, and thus the flow rate representing these relationships obtained experimentally. -Prepare a flow rate-pressure loss graph as a pressure loss parameter that represents the relationship between the pressure loss of the piping and the flow rate of the piping and the flow rate in advance, check these graphs to obtain the maximum allowable pressure loss, and supply hot water. A process of separately obtaining the accumulated pressure loss based on the water flow resistance when the hot water of the rated flow rate in each hot water circulation device is circulated through the pipe and comparing the maximum allowable pressure loss and the accumulated pressure loss is required. Then, the designer enters the design input while preparing the design drawing and the hot water piping arrangement information input thereto, the pressure loss parameter of the pipe used for the hot water piping, and the flow rate-external head graph. I need to work. Moreover, since the above-mentioned pressure loss-flow rate graph shows different behavior for each type of pipe, it is a complicated operation and requires skill.
[0004]
For example, as shown in FIG. 8, each hot water circulation apparatus or pipe shows a pressure loss like a chain line with respect to the hot water flow rate. The relationship between the total flow rate and the total pressure loss circulated through these hot water circulating devices and pipes is shown by a solid line rising to the right. On the other hand, the out-of-machine head of the hot water supply device is like a solid line that descends to the right with respect to the hot water flow rate, and the hot water flow up to the point where the out-of-machine head height matches the total pressure loss can be supplied. . In addition, when hot water is supplied at this hot water supply amount Q0, the out-of-machine head is equal to the total pressure loss ΔP0, and the hot water amount supplied to each hot water circulation device is Q1 and Q2. The rated hot water flow rate of the hot water distribution equipment must be satisfied. In addition, the graph of FIG. 6 is typical, and the tendency of the graph is different for each hot water circulation device, and it is not possible to perform approximate calculation. In addition, all of the hot water circulation devices supply hot water. If the calculation is such that the equipment is directly connected to the equipment, and the hot water distribution equipment is branched and connected at various points in the piping, it is necessary to perform a similar calculation for each branch. As the number of hot water circulation devices increases, the calculation becomes abruptly difficult.
[0005]
Under such circumstances, for example, at the request of the customer, a design change such as changing the hot water distribution device at the end of the hot water supply pipe from a small one that requires a small amount of hot water flow to one with a large amount of hot water flow. Is required, the pressure loss applied to the pipeline from the hot water supply device to the hot water distribution device to be supplied with hot water changes, and it is necessary to recalculate the pipe diameter of the pipe used for the hot water supply piping. May occur.
Such design changes are appropriately made at the building design stage depending on the budget of the customer, the availability of available building materials, and so on. This will involve re-presenting the budget estimate.
[0006]
However, such design changes tend to be made indefinitely until trial conditions are used to find the optimum conditions, so recalculation each time is a heavy burden on the designer and consumes a lot of time and labor. become. Then, it is not possible to promptly correct the building instructions, re-present the expenses and budget estimates, and it is difficult not only to respond appropriately to customer requests but also to cause delays in the construction of the building itself. .
[0007]
Accordingly, an object of the present invention is to provide a hot water supply piping design support system that can more easily check the design of the hot water supply piping in view of the above drawbacks.
[0008]
Even if the hot water supply at the rated flow is stable, the relationship between the flow rate-external head graph and the pressure loss-flow rate graph indicates that if multiple hot water flow devices are used at the same time, When one of them is used at a rated flow rate or higher, it may not be guaranteed only by the above calculation whether the hot water flow rate is sufficient for other hot water flow devices. There is also a fact that there is a demand for a hot water supply piping design support system that can be checked.
[0009]
[Means for Solving the Problems]
In order to achieve this object, the characteristic configuration of the hot water supply piping design support system of the present invention is as described in claim 1.
Pipe information input means for inputting arrangement information and pipe type information of the hot water supply pipe is provided, and equipment information input means for inputting equipment information and arrangement information of the hot water supply equipment and hot water distribution equipment connected to the hot water supply pipe is provided. A hot water supply piping design support system,
Maximum hot water supply amount table of the hot water supply device,
A rated flow rate table showing the relationship between the hot water circulation device and the rated flow rate based on the usage pattern of the hot water circulation device; and
Pressure loss parameters that record the relationship between the pressure loss per unit length and the flow rate determined for each pipe type, and the pipe type information used for the hot water supply piping ,
Storing means for storing
Referring to the rated flow table of the hot water circulation device from the device information , the accumulated from the hot water supply device to each pipe position from the pressure loss parameter and the hot water supply device, the hot water heating device, the arrangement information of the hot water circulation pipe Seeking pressure loss,
From the maximum hot water supply amount table, obtain a rated allowable pressure loss at which the hot water supply device can supply hot water at a rated flow rate for each hot water circulation device,
A pressure loss comparison mechanism for comparing and displaying whether or not the rated allowable pressure loss exceeds the cumulative pressure loss is provided.
Further, as described in claim 2,
Pipe information input means for inputting arrangement information and pipe type information of the hot water supply pipe is provided, and equipment information input means for inputting equipment information and arrangement information of the hot water supply equipment and hot water distribution equipment connected to the hot water supply pipe is provided. A hot water supply piping design support system,
Maximum hot water supply amount table of the hot water supply device,
A rated flow rate table showing the relationship between the hot water circulation device and the rated flow rate based on the usage pattern of the hot water circulation device; and
Pressure loss parameters that record the relationship between the pressure loss per unit length and the flow rate determined for each pipe type, and the pipe type information used for the hot water supply piping ,
Storing means for storing
With reference to the maximum hot water supply amount table of the hot water supply device from the device information, the maximum hot water flow rate at each hot water distribution device arrangement position based on the arrangement information of the hot water supply device and the hot water distribution device of the hot water supply pipe is Based on the pressure loss parameter,
A flow rate comparison mechanism for comparing and displaying whether or not the maximum hot water flow rate exceeds the rated flow rate of the hot water circulation device may be provided.
[0010]
[Function and effect]
In other words, pipe information input means for inputting arrangement information and pipe type information of the hot water supply pipe is provided, and equipment information input means for inputting equipment information and arrangement information of the hot water supply equipment and hot water distribution equipment connected to the hot water supply pipe. If provided, it is possible to input and design the relationship between the hot water supply device or hot water distribution device arranged in a building or the like and the hot water supply pipe for the device. At this time, it is possible to determine which pipe diameter and pipe type are used as the hot water supply pipe.
[0011]
Maximum hot water supply amount table of the hot water supply device, a rated flow rate table indicating the relationship between the hot water distribution device and the rated flow based on the usage form of the hot water distribution device, and pipe type information used for the hot water supply piping and its pipe If there is a storage means for storing a pressure loss parameter that records the relationship between the pressure loss per unit length determined for each species and the flow rate ,
By referring to the rated flow rate table of the hot water distribution device from the device information, the accumulated pressure loss from the hot water supply device to each piping position can be obtained from the pressure loss parameter and the arrangement information, and how much is the hot water supply device You can know if you have to supply hot water against pressure loss.
In addition, it is possible to obtain from the maximum hot water supply amount table a rated allowable pressure loss at which the hot water supply device can supply hot water at a rated flow rate for each hot water flow device, and in what form the hot water flow device is provided. Regardless, when the hot water supply device supplies hot water of a rated flow rate, it is possible to know how much pressure loss the external lift corresponds to.
[0012]
Then, when the rated allowable pressure loss exceeds the cumulative pressure loss, the hot water supply device can supply hot water of the rated flow rate to all of the hot water circulation devices. In other words, if there is a pressure loss comparison mechanism that compares and displays these, simply enter the pipe information and equipment information of the hot water supply pipe, and based on the comparison display, the designer of the hot water supply pipe It is possible to know information such as whether the part is the most difficult part of hot water flow or the part where there is a high possibility that the supply of hot water will be insufficient, and the hot water supply pipe ensures the hot water of the rated flow rate It becomes possible to determine whether or not it can be supplied.
[0013]
Similarly, if the storage means is provided, the maximum hot water supply amount table of the hot water supply device is referred to from the device information, and the arrangement information of the hot water supply device and the hot water distribution device of the hot water supply pipe is used. Based on the pressure loss parameter, the maximum hot water flow rate at each of the hot water circulation device placement positions can be obtained. That is, when hot water is supplied at the maximum output of the hot water supply device, it is required to determine how much hot water is supplied to each hot water circulation device of the hot water supply pipe.
[0014]
Since this hot water supply amount only needs to satisfy the rated flow rate of the hot water circulation device, a flow rate comparison mechanism for comparing and displaying whether or not the maximum hot water flow rate exceeds the rated flow rate of the hot water circulation device may be provided. For example, it is possible to know the required hot water flow rate at the end of the hot water supply pipe and the hot water flow rate that can be actually supplied from the capability of the hot water supply device. Just by entering the pipe information and equipment information of the supply pipe, based on the comparison display, the designer of the hot water supply pipe can determine which part of the pipe is the most difficult part of the hot water flow or the supply of hot water is not possible. It is possible to know information such as whether there is a high possibility of becoming sufficient, and it is possible to determine whether or not the hot water supply pipe can reliably supply hot water of a rated flow rate.
[0015]
For this reason, the hot water supply piping functions more reliably, for example, when a piping designer replaces the piping of a portion that seems to be unable to reliably supply hot water at the rated flow rate by one size larger and redesigns it. You will be able to design.
In addition, when such a design change is made, the flow rate resistance at the portion where the pipe type of the pipe is changed changes, so that the flow rate of the hot water flowing through the other pipe is also changed incidentally. When the result of such recalculation is displayed by the pressure loss comparison mechanism every time the design is changed, the design that can satisfy the hot water supply amount can be performed quickly without breaking the balance of the hot water supply pipe as a whole. Become.
[0016]
Therefore, it is possible to reflect the piping design on the construction site easily, quickly and surely, and it is possible to flexibly respond to design changes, etc., and the expenses based on the data designed in this way. In addition, since it can be provided in a form that can be easily used to create accompanying documents such as budget estimates, it has become possible to respond more appropriately to customer requests.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the hot water supply pipe design support system of the present invention includes a pipe information input means 11 for inputting arrangement information and pipe type information of the hot water supply pipe, and a gas water heater connected to the hot water supply pipe. Computer apparatus 1 provided with terminal information including equipment information input means 12 for inputting arrangement information and equipment information of hot water supply equipment such as heat source equipment, hot water floor heating equipment, bathroom drying systems, hot water supply curans, etc. Provided,
Maximum hot water supply amount table 21 of the hot water supply device, rated flow rate table 22 showing the relationship between the hot water supply device and the rated flow based on the usage form of the hot water supply device, and the diameter of the pipe used for the hot water supply piping and its A storage means 2 is provided for storing a pressure loss parameter 23 indicating a relationship with a pressure loss caused by the pipe when hot water is supplied into the pipe,
Refer to the rated flow rate table 22 of the hot water supply device from the device information, and provide a cumulative pressure loss calculation means 31 for obtaining a cumulative pressure loss at the position of each hot water distribution device from the pressure loss parameter and the arrangement information of the hot water supply pipe, and A rated permissible pressure loss calculating means 32 for obtaining a permissible rated pressure loss capable of supplying hot water at a rated flow rate to each hot water distribution device from the maximum hot water supply amount table;
A design drawing output device 5 for drawing and displaying a design drawing on the display device 4 with reference to each piece of arrangement information, tube type information, and device information is provided.
[0018]
The pipe information input means 11 provides the display device 4 with drawing information such as a 3D perspective drawing of a building to be laid by the hot water supply pipe 100 via a terminal device such as a personal computer or a workstation as the computer device 1. The designer is configured to be able to input the arrangement information of the hot water supply pipe 100 while displaying and referring to it. At this time, the coordinate input or the like indicating the piping laying route for the drawing information can be visually set directly. In parallel with these operations, the type of piping (steel pipe, copper pipe, resin pipe, flexible pipe, etc.) and the supply temperature to the hot water circulation device 300 (for high temperature or low temperature) are set, and the pipeline A pipe accessory 103 such as a temperature control valve to be interposed between the two can be input in the same manner (see FIG. 2).
[0019]
Similar to the arrangement information input unit 11, the device information input unit 12 refers to drawing information such as a plan view of each floor of the building 3D perspective drawing building via the display device 4, so that the designer can supply hot water supply piping. The hot water supply device 200 and the hot water distribution device 300 are connected to which of 100 in the input device. At this time, when the installation location of the hot water supply device 200 or the hot water distribution device 300 is specified, the appearance of the hot water supply device 200 or the hot water distribution device 300 is automatically drawn and can be displayed superimposed on the drawing information. In addition, it is possible to select an actually assumed usage pattern from the rated flow rate table based on the usage pattern of the hot water circulation device 300 (see FIG. 2). Specifically, the hot water circulation pipe 101 of the hot water heater 301, the hot water supply pipe 102 of the hot water consuming equipment 302 such as currant, etc. are sequentially input.
When piping design is performed, any of arrangement information, pipe type information, and device information can be input first so that a smooth design can be performed in parallel work.
[0020]
The storage means 2 is constituted by a magnetic storage device or the like provided in a server 6 connected to the computer device 1 or the like through the network, and the maximum hot water supply amount table 21, rated flow rate table 22, pressure loss parameter 23 via the computer device. The storage information such as can be read out. The storage means 2 stores design drawing data and is configured to be accessible to each storage device from the read / write (I / O) device of the computer device 1.
[0021]
The designer uses the pipe information input means 11 to input pipe type information such as the diameter and material of the pipe used for each pipe laying path and pipe laying position, and also uses the equipment information input means 12 to supply hot water supply equipment. 200 and device information and arrangement information of the hot water heater 301 are input.
Then, the circuit diagram creation mechanism 30 provided in the computer apparatus 1 simplifies the pipe line corresponding to the laying path of the pipe, and the hot water supply device 200 and the hot water heating device 301 (the hot water heating device 301 and the hot water consumption device 302). A circuit diagram representing the connection relationship with the line is created, and for example, the pipe position numbers A to N are assigned to the pipe lines (hot water circulation pipe 101 and hot water supply pipe 102) and displayed on the display device 4. (See FIGS. 3 and 6). In this example, a circuit diagram is created separately for the hot water circulation pipe 101 and the hot water supply pipe 102, and the hot water circulation amount and the pressure loss are calculated for each system.
[0022]
At the same time, the accumulated pressure loss calculation means 31 provided in the computer device 1 refers to the rated flow rate table 22 of the hot water heating equipment 301 from the equipment information, and uses the hot water supply equipment 200 from the pressure loss parameters 23 and the arrangement information. To the position of each hot water circulation pipe 101 to obtain the accumulated pressure loss.
[0023]
The rated flow rate table 22 is recorded as a correspondence table indicating how much pressure loss and how much flow of hot water is circulated in the normal usage pattern of the hot water heating appliance 301. When the usage pattern is selected, the hot water flow rate is required.
[0024]
The pressure loss parameter 23 is a graph showing the relationship between the pipe type (material and shape of the pipe) used for the hot water circulation pipe 101 and the pressure loss per unit length determined for each pipe type and the flow rate. For example, if it is determined that hot water flows at a rated flow rate, the pressure loss due to the pipe with respect to the rated flow rate of the hot water is determined from the graph.
When the pressure loss is calculated from the pressure loss parameter 23 based on the flow rate at each position of the hot water circulation pipe 101 from the hot water supply apparatus 200 to the hot water heating apparatus 301 of the pressure loss, and accumulated, the accumulated pressure loss at the pipe position is obtained.
[0025]
Further, the computer apparatus 1 obtains a rated allowable pressure loss at which the hot water supply device 200 can supply hot water at a rated flow rate to each hot water heating device 301 from the maximum hot water supply amount table 21. The supply pressure of the hot water supplied to the hot water heating appliance 301 can be obtained from the hot water flow rate, and the rated allowable pressure loss calculation means 32 provided in the computer apparatus 1 allows the hot water supply appliance 200 to the hot water heating appliance 301 to be supplied. A rated permissible pressure loss is determined as to how much pressure loss is allowed in the hot water circulation pipe 101.
[0026]
The computer device 1 is provided with a pressure loss comparison mechanism 33 for comparing and displaying whether or not the rated allowable pressure loss exceeds the cumulative pressure loss. If the rated allowable pressure loss exceeds the cumulative pressure loss, the hot water The heating device 301 can know whether or not it can be used at the rated flow rate.
That is, if the accumulated pressure loss when hot water is supplied at the rated flow rate for all the hot water heating devices 301 connected to the same hot water circulation pipe 101, all the hot water heating devices 301 connected to the same hot water circulation pipe 101 are obtained. At the same time, when used at the rated flow rate, it is possible to check whether each of the hot water heaters 301 is operating normally or not, specifically, whether the rated allowable pressure loss is satisfied. It is possible to check whether or not the hot water heater 301 operates normally.
[0027]
The relationship between the rated allowable pressure loss and the accumulated pressure loss is output to the display device 4 in a tabular format together with the pipe size and the like for each pipe number and displayed on the screen (see FIG. 4). In this way, the designer compares and examines whether the pressure loss in each pipe line is within the range of the rated allowable pressure loss. It is possible to make a design change such as replacing the pipe 101 with one having a low resistance. When such a design change is made, the pressure loss comparison mechanism 33 recalculates, so that the design balance of the entire hot water circulation pipe 101 can be achieved. In the figure, the pressure loss in the actual hot water heater 301 is also calculated as part of the hot water circulation pipe 101.
[0028]
The maximum hot water supply amount table 21 is recorded as a graph showing the relationship between the hot water flow rate that can be supplied by the hot water supply device 200 for each type of the hot water supply device 200, and the maximum hot water with respect to the supply water pressure from the graph. The supply amount can be known.
[0029]
Further, the maximum hot water supply amount table 21 of the hot water supply device 200 is referred to from the device information, and the maximum hot water flow rate at the position where each hot water heating device 301 is disposed in the hot water circulation pipe 101 is obtained based on the pressure loss parameter 23. Maximum hot water supply amount calculation means 34 is provided.
[0030]
Further, the computer device 1 is provided with a flow rate comparison mechanism 35 for comparing and displaying whether or not the maximum hot water flow rate exceeds the rated flow rate of the hot water circulation device 200, and the maximum hot water flow rate is the rated flow rate. In the case of exceeding the above, it can be seen that the hot water heating device 301 can be used stably in order to satisfy the hot water supply amount equal to or higher than the rated flow rate in the normal use state. Here, when the maximum hot water flow rate is lower than the rated flow rate, it is possible to make a design change such as exchanging the pipe constituting the relevant part of the hot water circulation pipe 101 with a low resistance one. When such a design change is made, the flow rate comparison mechanism 35 recalculates, so that the design balance of the entire hot water circulation pipe 101 can be achieved (see FIG. 5). In the figure, the calculation of the amount of heat supplied in the actual hot water heating appliance 301 is also checked in the same way with reference to the heat loss parameter (not shown) stored in the storage means 2 as in the calculation of the rated flow rate. ing.
[0031]
Subsequently, the same calculation process is performed for the hot water supply pipe 102, and the circuit diagram shown in FIG. 6 is created. As shown in FIG. It is calculated and can check whether it can withstand the use of the rated flow rate, and whether the maximum flow rate satisfies a predetermined standard, etc. (Examples include curans that are not in isometric drawings).
[0032]
When changing the design of a pipe as described above, a pipe type changing means for selecting an appropriate pipe with reference to the pressure loss parameter 23 is provided so that an appropriate pipe can be automatically selected. It doesn't matter. In such a case, when an appropriate pressure loss, flow rate, and heat quantity cannot be obtained regardless of what kind of pipe is set, the designer changes the design such as changing the hot water supply device 200 to one having a high capacity. Can be done.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a hot water supply piping design support system according to the present invention. FIG. 2 is an isometric view showing an example of a design object. FIG. 3 is a circuit diagram showing an example of a design object. FIG. 5 is a diagram showing an example of output by the flow rate comparison mechanism. FIG. 6 is a circuit diagram showing a different example of the design object. FIG. 7 is an example of output by the pressure loss comparison mechanism and the flow rate comparison mechanism based on FIG. [Figure 8] Graph showing the relationship between hot water flow rate and pressure loss [Explanation of symbols]
11 Pipe information input means 12 Equipment information input means 21 Maximum hot water supply amount table 22 Rated flow table 23 Pressure loss parameter 33 Pressure loss comparison mechanism 100 Hot water supply pipe 200 Hot water supply equipment 300 Hot water distribution equipment

Claims (2)

Pipe information input means for inputting arrangement information and pipe type information of the hot water supply pipe is provided, and equipment information input means for inputting equipment information and arrangement information of the hot water supply equipment and hot water distribution equipment connected to the hot water supply pipe is provided. A hot water supply piping design support system,
Maximum hot water supply amount table of the hot water supply device,
A rated flow rate table showing the relationship between the hot water circulation device and the rated flow rate based on the usage pattern of the hot water circulation device; and
Pressure loss parameters that record the relationship between the pressure loss per unit length and the flow rate determined for each pipe type, and the pipe type information used for the hot water supply piping ,
Storing means for storing
Referring to the rated flow table of the hot water circulation device from the device information , the accumulated from the hot water supply device to each pipe position from the pressure loss parameter and the hot water supply device, the hot water heating device, the arrangement information of the hot water circulation piping Seeking pressure loss,
From the maximum hot water supply amount table, obtain a rated allowable pressure loss at which the hot water supply device can supply hot water at a rated flow rate for each hot water circulation device,
A hot water supply piping design support system provided with a pressure loss comparison mechanism for comparing and displaying whether or not the rated allowable pressure loss exceeds the cumulative pressure loss. Pipe information input means for inputting arrangement information and pipe type information of the hot water supply pipe is provided, and equipment information input means for inputting equipment information and arrangement information of the hot water supply equipment and hot water distribution equipment connected to the hot water supply pipe is provided. A hot water supply piping design support system,
Maximum hot water supply amount table of the hot water supply device,
A rated flow rate table showing the relationship between the hot water circulation device and the rated flow rate based on the usage pattern of the hot water circulation device; and
A storage means is provided for storing the pipe type information used for the hot water supply piping and the pressure loss parameter recording the relationship between the pressure loss per unit length determined for each pipe type and the flow rate ,
With reference to the maximum hot water supply amount table of the hot water supply device from the device information, the maximum hot water flow rate at each hot water distribution device arrangement position based on the arrangement information of the hot water supply device and the hot water distribution device of the hot water supply pipe is Based on the pressure loss parameter,
A hot water supply piping design support system provided with a flow rate comparison mechanism for comparing and displaying whether or not the maximum hot water flow rate exceeds the rated flow rate of the hot water circulation device.

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