JP2021177132A - Safety valve performance test measuring device - Google Patents

Abstract

To provide a performance test measuring device for a safety valve capable of verifying a design actuation formula using actual data measurements, including fluid flow characteristics and fluid jet volume, the fluid being high-pressure and high-temperature steam and hazardous gas.SOLUTION: The performance test measuring device includes: a pressure vessel for storing fluid generated from a boiler; pressurizing means for pressurizing the fluid stored inside the pressure vessel at a predetermined specific pressure; a safety valve detachably attached to a pipe provided in the pressure vessel, which opens and closes when the internal pressure of the pressure vessel rises to regulate the internal pressure of the pressure vessel; a discharge storage tank that stores the fluid jetted from the safety valve; a measuring unit for measuring the operating state of the safety valve, the fluid jetting pressure and the fluid jetting volume of the safety valve, the seat tightness of the safety valve, and the pressure and weight of the discharge storage tank, and providing the results of the measurements; and a control unit that controls the operation of the pressurizing means and the safety valve and sets the measurement conditions for the measurement unit.SELECTED DRAWING: Figure 1

Description

The present invention relates to a safety valve performance test measuring device, and more particularly, it is possible to test the performance of the safety valve so that it is possible to measure and verify whether the performance of the safety valve is within the permissible range. Regarding the performance test and measurement device of the safety valve for.

In general, in boiler equipment that generates and uses high-pressure steam, it is a very important task to properly control the steam pressure and temperature and protect the equipment and human life from high-pressure and high-temperature steam.

In most boiler equipment, the control valve is responsible for controlling the pressure and temperature of water and steam, but it is possible to prevent damage to the equipment by discharging water or steam in an abnormal situation, that is, when the pressure increases excessively. A safe valve that can be installed is indispensable.

Such a safety valve functions to discharge gas to the outside when the pressure of steam in the boiler rises excessively.

In addition, when deriving the design operation calculation formula when designing the safety valve, actual data including the flow characteristics of the fluid that is steam and the amount of fluid ejected are used, but high-pressure and high-temperature steam and dangerous gas are used. It is not possible to test the design operation calculation formula using the measurement of actual data in the place where the fluid is not equipped with specific equipment.

An object of the present invention is to provide a performance test measuring device for a safety valve capable of verifying a design operation calculation formula using measurement of actual data including flow characteristics and fluid ejection amount of high-pressure / high-temperature steam and a fluid which is a dangerous gas. To provide.

The present invention attaches and detaches to a pressure vessel for storing fluid generated from a boiler, a pressurizing means for pressurizing the fluid stored inside the pressure vessel at a predetermined specific pressure, and a pipe provided in the pressure vessel. A safety valve that can be mounted and opens and closes when the internal pressure of the pressure vessel rises to adjust the internal pressure of the pressure vessel, a discharge storage tank that stores the fluid ejected from the safety valve, and an operating state of the safety valve. , The measuring unit that measures the fluid ejection pressure and fluid ejection amount of the safety valve, the seat tightness of the safety valve, and the pressure and weight of the discharge storage tank and provides the measurement results, and the pressurizing means and the safety valve. It is characterized in that it is composed of a control unit that controls the operation and sets the measurement conditions of the measurement unit.

Further, it is preferable to further include a pipe supporting means provided on one side of the pipe so as to prevent vibration of the pipe due to the fluid ejection of the safety valve.

The safety valve performance test measuring device according to the present invention measures the operating state of the safety valve, the fluid ejection pressure and the fluid ejection amount of the safety valve, the seat tightness of the safety valve, and the pressure and weight of the discharge storage tank, and obtains the measurement results. By disclosing the provided measurement unit, it is possible to test the design operation calculation formula using the measurement of the actual data including the flow characteristics of the fluid which is a high-pressure / high-temperature steam and the dangerous gas and the amount of the fluid ejected.

It is the schematic of the performance test measuring apparatus of the safety valve which concerns on embodiment of this invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, the performance of the safety valve is tested to confirm whether the performance of the safety valve is within the permissible range, and the actual flow characteristics of the high-temperature and high-pressure steam and the fluid as a dangerous gas and the amount of fluid ejected are included. It relates to a safety valve performance test measuring device capable of verifying a design operation calculation formula using the measurement of the above data. Hereinafter, the configuration of the performance test / measurement device for the safety valve according to the present invention will be described in detail with reference to FIG.

FIG. 1 is a schematic view of a safety valve performance test / measurement device according to an embodiment of the present invention.

As shown in FIG. 1, the safety valve performance test and measurement device according to the present invention includes a pressure vessel 10, a pressurizing means (not shown), a safety valve 20, a discharge storage tank 30, a measuring unit (not shown), and a control unit. (Not shown) and piping support means (not shown) are included.

First, the pressure vessel 10 stores a fluid which is a high-pressure steam generated from a boiler, and the fluid stored inside the pressure vessel 10 can be pressurized at a predetermined specific pressure by a pressurizing means described later.

Preferably, the pressurizing means can be composed of a control valve that opens and closes to control the supply and shutoff of the fluid.

Specifically, in order to pressurize the fluid at a specific pressure preset by the administrator, the control valve is opened to pressurize the fluid at the specific pressure, and when the pressurization is completed, the control valve is closed. The flow of fluid can be blocked.

The safety valve 20 is detachably attached to the pipe provided in the pressure vessel 10, but can be opened and closed when the internal pressure of the pressure vessel 10 rises to adjust the internal pressure of the pressure vessel 10.

Specifically, the safety valve 20 is detachably provided on one side of a valve stand provided in the pipe, and has an effect that it can be easily replaced with a safety valve 20 that requires a performance test.

Further, when the pressure of the internal fluid of the pressure vessel 10 increases, the safety valve 20 is opened and the fluid is ejected, so that the pressure vessel 10 can be protected from an excessive increase in pressure, and details of the operation process of the safety valve 20 can be obtained. The explanation will be omitted.

As described above, the fluid ejected by the operation of the safety valve 20 is stored in the discharge storage tank 30 described later.

That is, the discharge storage tank 30 has a configuration for accumulating and storing the fluid ejected from the safety valve 20, and prevents the inner wall from being damaged due to the sudden ejection of the fluid which is high-pressure steam and prevents the fluid from flowing out. Therefore, it is preferable that the inner wall is provided with a reinforcing material having a predetermined thickness in order to ensure safety.

Next, the measuring unit measures the operating state of the safety valve 20, the fluid ejection pressure and the fluid ejection amount of the safety valve 20, the seat tightness of the safety valve 20, the pressure and weight of the discharge storage tank 30, and the measurement results. A display device for outputting a measurement result may be provided.

The display device is composed of a lamp, a display and a speaker, provides measurement results via the display, and generates an alarm via the lamp and the speaker when an abnormality occurs in the safety valve 20 to notify the administrator. be able to.

Specifically, the measuring unit can receive a state signal generated during the operation of the safety valve 20 and detect an operating state including the presence / absence of operation and the presence / absence of abnormality of the safety valve 20.

When the presence or absence of an abnormality is detected, the lamp provided in the display can be blinked at a predetermined speed or lit in a specific color to notify the administrator, and an alarm can be generated as a sound through the speaker.

Further, the measuring unit can measure the fluid ejection pressure and the fluid ejection amount associated with the operation of the safety valve 20, and specifically, the fluid ejection pressure including the ejection start pressure, the ejection pressure, the ejection stop pressure and the ejection descent. By measuring and providing the data values for the detailed items of the above, various performance evaluations of the safety valve 20 can be carried out.

The fluid ejection amount is the amount of fluid ejected per operation of the safety valve 20, and is the number of operations of the safety valve 20 and the pressure and weight value of the discharge storage tank 30 based on a calculation formula preset by the administrator. Can be converted from and provided.

Further, the measuring unit measures the seat tightness of the safety valve 20 by pressurizing the fluid in the pressure vessel 10 to a specific pressure by a pressurizing means and checking for leakage on the seat side of the safety valve 20. Can be done.

Preferably, during the performance test of the safety valve 20 by the measurement unit described above, the measurement conditions including the temperature and pressure can be set by the control unit described later.

This is the end of the explanation of the measurement unit. As described above, in the present invention, the administrator can confirm the general operation status including the operating state of the safety valve 20 in real time via the measurement unit.

It also has the effect of enabling the verification of the safety valve design operation calculation formula using the measurement of actual data including the flow characteristics of the fluid composed of high-pressure / high-temperature steam and dangerous gas and the amount of fluid ejected.
Next, the control unit can control the operation of the pressurizing means and the safety valve 20 and set the measurement conditions of the measuring unit.

That is, the control unit controls the opening / closing operation of the pressurizing means and the safety valve 20 based on the command input from the administrator, and enables the performance test of the safety valve 20 in various environments and operating conditions.

Further, the pipe supporting means is provided on one side of the pipe so as to prevent vibration of the pipe due to the fluid ejection of the safety valve 20.

That is, the pipe supporting means prevents the generation of reaction force and vibration generated in the pipe at the time of sudden fluid ejection due to the opening of the safety valve 20, ensures stability, and minimizes the cause of error due to vibration. By limiting it to the limit, it enables more accurate measurement of the measuring unit.
This concludes the description of the safety valve performance test / measurement device according to the present invention.

The present invention has been described with reference to the illustrated embodiments, but this is merely exemplary, and any person with conventional knowledge in the field to which the art belongs will have various modifications and equalities. You will understand that other embodiments are possible. Therefore, the genuine technical protection scope of the present invention should be defined by the following claims.

10 Pressure vessel 20 Safety valve 30 Discharge storage tank

Claims (2)

A pressure vessel that stores the fluid generated from the boiler,
A pressurizing means that pressurizes the fluid stored inside the pressure vessel at a predetermined specific pressure, and
A safety valve that is detachably attached to a pipe provided in the pressure vessel and opens and closes when the internal pressure of the pressure vessel rises to adjust the internal pressure of the pressure vessel.
A discharge storage tank for storing the fluid ejected from the safety valve, and a discharge storage tank.
A measuring unit that measures the operating state of the safety valve, the fluid ejection pressure and the fluid ejection amount of the safety valve, the seat tightness of the safety valve, and the pressure and weight of the discharge storage tank, and provides the measurement results.
A performance test and measurement device for a safety valve, which comprises a control unit that controls the operation of the pressurizing means and the safety valve and sets measurement conditions of the measurement unit. The performance test and measurement device for a safety valve according to claim 1, further comprising a pipe support means provided on one side of the pipe so as to prevent vibration of the pipe due to fluid ejection of the safety valve.

Images