JPH02106601A - Method for operating boiler system - Google Patents

Abstract

PURPOSE:To reduce the cost of equipment relating to piping and prevent loss of heat (decrease of the temperature of steam, leakage of steam, etc.) in a plant, where stationary boilers are installed close to the respective units of equipment using steam, by providing traveling boilers instead of installing auxiliary boilers for the stationary boilers. CONSTITUTION:In a plant space 1 there are many stationary boilers 2 installed in a layout respectively to supply steam to the individual units of equipment using steam, such as a turbine, installed close by. The installations in the space 1 include also a plurality of units of other steam-using equipment 3 whose requirement of steam is not frequent. When a trouble occurs or the steam- supplying capacity becomes insufficient in any of the stationary boilers (for example, the one designated by 2a), a traveling boiler 4 is brought close so that particular stationary boiler 2 so as to supply steam required. When any unit of the other steam-using equipment 3 requires steam, a traveling boiler 4 is brought close to that particular unit of the other steam-using equipment so as to supply steam required. Thus supply of steam to fill the requirement of each steam-using unit can be secured at all times without installing auxiliary boilers for the stationary boilers 2.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a method of operating a boiler system that reduces equipment costs by deploying and operating a combination of a stationary boiler and a mobile boiler. It is.

[Prior Art] In factories and the like, a large number of boilers are fixedly arranged, either concentrated in a specific location or suitably distributed, and the boilers are connected to steam-demanding locations through steam piping. In a boiler system including such a boiler and piping, a backup boiler is installed in case of an emergency such as a breakdown.

[Problems to be solved by the invention] When boilers are installed centrally, it is necessary to arrange a large number of steam piping vertically and horizontally to reach the steam demand point, and the distance to the place of use becomes long, making it difficult to reduce the steam temperature. This may cause heat loss or steam loss.

When the boilers are installed in a distributed manner, the boilers are installed relatively close to the point of demand, but a backup boiler must be placed for each boiler in case of an emergency, and the number of backup boilers installed increases unnecessarily.

In addition, regardless of whether the system is a centralized installation system or a distributed installation system, it is necessary to install steam piping or boilers even in locations in the factory where steam is required relatively infrequently.

As described above, the conventional boiler arrangement system has disadvantages such as an increase in piping cost, an increase in heat loss, and an increase in the number of boilers installed.

[Means for solving the problems] The present invention has the following features:1. In a system in which stationary boilers are installed close to each location where steam is required, the above-mentioned problem is solved by deploying a mobile boiler without providing a standby boiler for each stationary boiler.

That is, in the boiler system operating method of the present invention, a mobile boiler is used in a boiler system having a stationary boiler placed close to each steam demand location in order to supply steam to a plurality of specific steam demand locations. Deploy. and,
When the stationary boiler breaks down or the amount of steam generated is insufficient, the mobile boiler is moved to the vicinity of the stationary boiler and operated to supply steam to the specific demand location. Furthermore, when a steam demand point separate from the specific demand point arises, steam is supplied to the separate demand point by moving a mobile boiler to the vicinity of the separate demand point and operating it.

[Operation] In the method of the present invention, steam is normally supplied to a specific steam demand location from a stationary boiler placed close to the location. If the stationary boiler malfunctions,
When the amount of steam generated is insufficient, an 8-motion boiler is moved to the vicinity of the stationary boiler and steam is supplied to a specific demand point. Therefore, since the distance between the specific demand point and the stationary boiler is small and the steam piping between them is short, the piping cost is low, and the drop in steam temperature and steam loss are extremely small. In addition, since it is not necessary to permanently install a standby boiler, the boiler equipment cost is also low.

In the method of the present invention, when a demand for steam occurs at a location different from the specific demand point, a mobile boiler is moved near the separate demand point, and from this mobile boiler the steam is transferred to the separate demand point. supply steam to In this case, the separate demand point uses steam less frequently, and the use of the mobile boiler ends in a short time. In this way, stationary boilers are not installed in areas where steam is used infrequently, and steam is supplied from a mobile boiler only when needed.
There is no need for stationary boilers or steam piping that have low operating efficiency. By sharing the mobile boiler throughout the factory or the like, the number of mobile boilers can be reduced, equipment costs can be reduced, and the operating efficiency of the 8-motion boiler can be improved.

[Examples] Preferred embodiments and examples of the present invention will be described in detail below.

The method of the present invention can be employed not only in factories but also at construction sites.

The stationary boiler of the present invention refers to a boiler that is permanently installed in a fixed location. This stationary boiler supplies steam to specific demand locations through steam piping. Specific areas of demand include heat exchangers, turbines, reciprocating engines, as well as facilities that blow steam directly into water to generate high-temperature water, or that spray steam onto goods and components for treatment. Illustrated.

In the present invention, the fJ dynamic boiler may be one in which the boiler body is installed on a towing vehicle pulled by a locomotive, a road roller, etc., or a self-propelled vehicle equipped with an engine. Furthermore, mobile boilers and the like that are used for a limited time at civil engineering and construction sites can also be adopted.

In the case of the above-mentioned oscillation type boiler in which the boiler body is installed on a vehicle that can be moved by self-propelled or towed, there is also a fuel tank on the vehicle, one end of which communicates with the boiler body, and the other end equipped with a one-touch cover. A water supply pipe, a steam extraction pipe whose one end communicates with the boiler and is equipped with a one-touch turntable at the other end, and a water supply pump provided on the water supply pipe as necessary can be suitably employed. In this case, it is preferable to connect a branch pipe that opens and closes to the left to the pipe connecting the stationary boiler and the steam demand point, and to form an engagement part with the one-touch coupler at the end of this branch pipe. be. In this case, if the mobile boiler is in operation for a short period of time, it is sufficient to use the fuel in the fuel tank installed on the vehicle. Preferably, the fuel is supplied from the fuel piping that is provided.

Further, it is preferable to use a burner of a type that can burn either gas or oil as the burner of the boiler body of this mobile boiler. In this way, an oil tank that does not require a pressure vessel can be mounted on the vehicle. In addition, fuel gas can be supplied from gas piping that is normally installed in the factory.

In the present invention, the number of mobile boilers to be deployed is set in consideration of the number of systems that use steam less frequently, but for example, if there are 50 stationary boilers, the number of mobile boilers may be about 3 to 5.

Hereinafter, specific examples will be described with reference to the drawings.

FIG. 1 is a schematic plan view illustrating the arrangement of boilers in a factory employing the method of the present invention.

A large number of stationary boilers 2 are arranged within the factory space 1, each supplying steam to demand points (paths shown) such as turbines installed in the vicinity of the boilers. In addition, within the space 1, there are multiple (
In this embodiment, two facilities 3 are installed. code 4
is a mobile boiler.

Each demand point or facility 3 is equipped with a transmitting device for notifying the occurrence of an abnormality or the need for steam, and this transmitting signal is displayed on the control panel of the central control room (illustrated route). The mobile boiler 4 is moved to a necessary location based on a command from the central control room and starts supplying steam.

In this factory, if a failure occurs in one of the stationary boilers 2 (for example, the stationary boiler indicated by reference numeral 2a) or the steam supply capacity is insufficient, the mobile boiler 4 is moved to the vicinity of the stationary boiler 2. and steam is supplied. Furthermore, when steam is needed in any of the facilities 3, the mobile boiler 4 is moved to the vicinity thereof,
Steam is supplied to the facility 3.

In this way, steam can be stably supplied to each demand location without attaching a standby boiler to the stationary boiler 2. Moreover, since each demand point and the stationary boiler 2 are close to each other, the boiler piping between them is short, and there is almost no drop in steam temperature or steam loss. Furthermore, since the 8-motion boiler 4 is shared throughout the factory, the number of installed mobile boilers 4 is small, and their operating efficiency is high.

[Effects] As described above, according to the method of the present invention, it is possible to eliminate the need for a standby boiler, reduce piping costs, and prevent heat loss (decreased steam temperature, steam leakage, etc.). In addition, only a small number of mobile boilers are required, and the operating efficiency is high. Therefore, according to the present invention, both equipment costs and running costs are significantly reduced.

[Brief explanation of drawings]

FIG. 1 is a plan view illustrating the method of the embodiment. 1...Factory space, 2... Stationary boiler, 4...Mobile boiler.

Claims (1)

[Claims] A method of operating a boiler system having a stationary boiler disposed proximate to each steam demand location to supply steam to a plurality of specific steam demand locations, the method comprising: deploying a mobile boiler; In the event of a failure or insufficient amount of steam generation, the mobile boiler is moved to the vicinity of the stationary boiler and operated to supply steam to the specific demand point, and the steam demand point is separate from the specific demand point. 1. A method for operating a boiler system, characterized in that, when a steam boiler occurs, steam is supplied to the separate demand point by moving a mobile boiler to the vicinity of the separate demand point and operating it.