Determination device, determination program, determination method, determination system, and collection device

Abstract

To easily determine a continuous operation state of a condensate discharge device.SOLUTION: A determination device includes a determination unit that determines whether a condensate discharge device is in a non-operating state, a closed state in which a condensate closes the condensate discharge device, or another state, on the basis of an inlet-side pressure value Pi which is a pressure on an inlet side of an orifice type condensate discharge device having an inlet to which steam is input and an outlet from which the condensate is discharged, and an inlet-side temperature Ti which is a temperature on the inlet side. The determination unit determines whether the condensate discharge device is in a normal operation state or in a leakage state in which steam leaks, on the basis of an outlet-side pressure value Po that is a pressure on an outlet side of the condensate discharge device and an outlet-side temperature To that is a temperature of the outlet side.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a determination device, a determination program, a determination method, and a determination system for determining the operating state of a condensate drainage device, and a collection device included in the determination system. [Background technology]

[0002] There are condensate drainage devices that receive steam and drain condensate (Patent Documents 1-4). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6408734 [Patent Document 2] Patent No. 6836454 [Patent Document 3] Patent No. 5961326 [Patent Document 4] Patent No. 7244120 [Non-patent literature]

[0004] [Non-Patent Document 1] "Wireless Steam Trap Monitoring Device," [online], Yokogawa Electric Corporation, [Retrieved February 16, 2024], Internet <URL: https: / / web-material3.yokogawa.com / BU01W06A14-01JA.pdf> [Non-patent document 2] "Steam Trap Monitoring Module," [online], Yokogawa Electric Corporation, [Retrieved February 16, 2024], Internet <URL: https: / / web-material3.yokogawa.com / GS01W06G01-01JA.pdf> Summary of the Invention [Problem to be solved by the invention]

[0005] Condensate discharge equipment can increase or decrease with changes in operating conditions, so it cannot be said with certainty that condensate accumulation or steam leakage will not occur. Maintenance inspections require preparation and are time-consuming, and only the condition at the time of the maintenance inspection can be determined, making it difficult to determine continuous conditions or trends.

[0006] In view of the above circumstances, an object of the present disclosure is to easily determine the continuous operating state of a condensate drainage device. [Means for solving the problem]

[0007] A determination device according to one embodiment of the present disclosure includes a determination unit that determines whether the condensate discharge device is in an inoperative state, in a blocked state where condensate is blocking the condensate discharge device, or in another state, based on an inlet pressure value Pi, which is the pressure on the inlet side of the condensate discharge device, and an inlet temperature Ti, which is the temperature on the inlet side. [Effects of the Invention]

[0008] According to the present disclosure, the continuous operating status of the condensate drainage device can be determined in a simple manner. [Brief explanation of the drawings]

[0009] [Figure 1] 1 illustrates a determination system according to an embodiment of the present disclosure. [Figure 2] 4 is a flowchart illustrating a method for determining the operating state of a condensate drainer. [Figure 3] 4 is a flowchart illustrating a method for determining the operating state of a condensate drainer. DETAILED DESCRIPTION OF THE INVENTION

[0010] FIG. 1 illustrates a determination system according to one embodiment of the present disclosure.

[0011] The determination system 1 is a system for determining the operating state of a condensate discharge device 10 (steam trap). The condensate discharge device 10 is installed in a heat exchanger or steam piping in a plant or the like that uses steam as a heat source, and automatically discharges condensed water (drain) generated after the steam releases heat from the piping. The condensate discharge device 10 may be an orifice-type condensate discharge device without moving parts (see Patent Document 1), or a float-type or disk-type condensate discharge device with moving parts. The condensate discharge device 10 has an inlet 11 through which steam is input and an outlet 12 through which condensate is discharged. The inlet 11 of the condensate discharge device 10 is connected to an inlet-side piping 13. The outlet 12 of the condensate discharge device 10 is connected to an outlet-side piping 14.

[0012] The inlet pressure sensor 15 and the outlet pressure sensor 17 are installed in the inlet pipe 13 and the outlet pipe 14, respectively. Because the pressure in the inlet pipe 13 or the outlet pipe 14 changes relatively little depending on the measurement position, the inlet pressure sensor 15 or the outlet pressure sensor 17 only needs to be able to measure the pressure at any position in the inlet pipe 13 or the outlet pipe 14, and does not have to be limited to the vicinity of the inlet 11 or the outlet 12, particularly when using an existing pressure sensor. On the other hand, the inlet pressure sensor 15 and the outlet pressure sensor 17 may be installed in the vicinity of the inlet 11 and the outlet 12 of the condensate drainage device 10, respectively.

[0013] The inlet-side temperature sensor 16 and the outlet-side temperature sensor 18 are, for example, thermocouples such as K-type thermocouples, and are installed in the inlet-side pipe 13 and the outlet-side pipe 14, respectively. The inlet-side temperature sensor 16 and the outlet-side temperature sensor 18 may be installed near the inlet 11 and the outlet 12 of the condensate drainage device 10, respectively. The inlet-side temperature sensor 16 and the outlet-side temperature sensor 18 preferably measure the internal temperatures of the inlet-side pipe 13 and the outlet-side pipe 14, but may also measure the pipe surface temperatures near the inlet 11 and the outlet 12 (e.g., 5 cm to 15 cm). When the inlet-side temperature sensor 16 and the outlet-side temperature sensor 18 are sensors that measure the pipe surface temperature, they may be, for example, flat-plate temperature sensors insulated with thin, heat-resistant resin. In this case, the inlet-side temperature sensor 16 and the outlet-side temperature sensor 18 are preferably kept warm to prevent them from being affected by outside air.

[0014] The determination system 1 includes a collection device 20 and a determination device 30. The collection device 20 includes a receiving unit 21, a conversion unit 23, a recording unit 24, a communication interface 25, a timer 26, and a battery 22. The receiving unit 21 is detachably connected to the inlet pressure sensor 15, the inlet temperature sensor 16, the outlet pressure sensor 17, and the outlet temperature sensor 18 via connectors, terminal boards, screws, or the like, and receives analog signals from each of the sensors 15-18. The conversion unit 23 periodically collects the analog signals received from each of the sensors 15-18, converts them into digital signals by A / D conversion, and records the digitally converted temperature and pressure values ​​in the recording unit 24. The communication interface 25 is, for example, a USB interface, and records the temperature and pressure values ​​recorded in the recording unit 24 in a portable USB memory or transmits them to the determination device 30 via a USB cable. The timer 26 is used to control the timing at which the conversion unit 23 converts the analog signals into digital signals and records them. The battery 22 is typically a primary battery so as to not require an AC power connection (cordless), and drives the collection device 20 and may also drive the inlet pressure sensor 15 and / or the outlet pressure sensor 17. When powered by the battery 22, the inlet pressure sensor 15 and / or the outlet pressure sensor 17 may be of a low-voltage drive type. When the collection device 20 is installed outdoors, it is preferable that it be housed in a waterproof case.

[0015] The determination device 30 is a dedicated device or a general-purpose personal computer, etc. The determination device 30 has a communication interface 31, a control circuit 32, and a display device 33. The communication interface 31 is, for example, a USB interface, and receives the temperature and pressure values ​​recorded in the determination system 1 via a portable USB memory or a USB cable. In the control circuit 32 (computer), the CPU loads a determination program recorded in the ROM into the RAM and executes it, thereby operating as a determination unit 34. The determination unit 34 determines the time-dependent (continuous) operating state of the condensate discharge device 10 based on the temperature and pressure values. The display device 33 displays a GUI showing the time-dependent (continuous) operating state of the condensate discharge device 10. The GUI may be in the form of a graph, a table, etc.

[0016] 2 and 3 are flow charts showing a method for determining the operating state of the condensate drainer.

[0017] In the determination system 1 configured as described above, the collection device 20 is installed near the condensate drainage device 10 to be investigated, and is connected to the inlet pressure sensor 15, the inlet temperature sensor 16, the outlet pressure sensor 17, and the outlet temperature sensor 18 (step S1). The collection device 20 periodically collects and records temperature and pressure data (at a time interval set in the timer 26, for example, every few seconds to once a day) for a certain period (the period for determining the operating state) (step S2). After the certain period has elapsed, the collection device 20 is disconnected from the sensors 15-18, and the collection device 20 is connected to the determination device 30 by wire, so that the temperature and pressure data recorded in the collection device 20 is output (transmitted) to the determination device 30. Alternatively, the temperature and pressure data recorded in the collection device 20 is output (transmitted) to the determination device 30 via a portable recording medium such as a USB memory (step S3). The judgment unit 34 of the judgment device 30 judges the time-dependent (continuous) operating state of the condensate discharge device 10 for this certain period (step S4), and displays the trend of the measurement period (i.e., the time-dependent (continuous) progression of the operating state) and the judgment results on the display device 33 (step S5).

[0018] On the other hand, if existing pressure sensors incorporated in the operating system are used as the inlet-side pressure sensor 15 and the outlet-side pressure sensor 17, a file of pressure values ​​measured by the existing inlet-side pressure sensor 15 and the outlet-side pressure sensor 17 may be imported into the determination unit 34 of the determination device 30. In this case, the collection device 20 is connected to the inlet-side temperature sensor 16 and the outlet-side temperature sensor 18, but does not need to be connected to the inlet-side pressure sensor 15 and the outlet-side pressure sensor 17. In this case, the collection device 20 is installed near the condensate drainage device 10 to be investigated and connected to the inlet-side temperature sensor 16 and the outlet-side temperature sensor 18 (step S1a). The collection device 20 periodically collects and records temperature data for a certain period (the period for determining the operating state) (step S2a). After the certain period has elapsed, the collection device 20 is disconnected from the sensors 16 and 18, and the temperature data recorded in the collection device 20 is output (transmitted) to the determination device 30 (step S3a). Meanwhile, pressure values ​​measured by the inlet pressure sensor 15 and the outlet pressure sensor 17, which are periodically collected and recorded in an external storage device incorporated in the existing operating system, are converted into a file and output (transmitted) to the determination device 30 (step S3b). Steps S4-S5 are similar.

[0019] In step S4, the determination unit 34 determines whether the condensate discharge device 10 is in a non-operating state, a blocked state in which condensate is blocking the condensate discharge device 10, or another state based on the inlet pressure value Pi, which is the pressure on the inlet 11 side of the condensate discharge device 10, and the inlet temperature Ti, which is the temperature on the inlet 11 side. A blocked state occurs when condensate accumulates at the inlet 11, preventing necessary discharge, or when the orifice is clogged and condensate accumulates in excess of its discharge capacity. The determination unit 34 determines whether the condensate discharge device 10 is in a normal operating state or a leaking state in which steam is leaking, based on the outlet pressure value Po, which is the pressure on the outlet 12 side of the condensate discharge device 10, and the outlet temperature To, which is the temperature on the outlet 12 side. In a normal operating state, there is no steam leakage and condensate is being discharged. In a leaking state, the amount of condensate generated is extremely small and steam is leaking from the orifice.

[0020] The determination method of step S4 will be described more specifically. The determination unit 34 preset a pressure threshold value pi (the minimum pressure value on the inlet 11 side, for example, 200 kPa), a threshold value si (the determination criterion for blockage, for example, 0.1), a first temperature threshold value so1 (the determination criterion for a small leakage amount, for example, 2 to 7 °C), and a second temperature threshold value so2 (the determination criterion for a large leakage amount, for example, 7 to 13 °C). The second temperature threshold value so2 is higher than the first temperature threshold value so1 (so1 < so2). Each threshold value may vary depending on the plant.

[0021] When the inlet-side pressure value Pi is less than the pressure threshold value pi (Pi < pi) (step S11, No), the determination unit 34 determines that it is in a non-operating state (step S12). On the other hand, when the inlet-side pressure value Pi is greater than or equal to the pressure threshold value pi (Pi ≥ pi) (step S11, Yes), the determination unit 34 determines the saturation temperature tsi for the inlet-side pressure value Pi (step S13). The saturation temperature is determined depending on the pressure value. A correspondence table of pressure values (kPaG) and saturation temperatures (for example, in 50 kPaG increments, a table recording the saturation temperature for each pressure value) is stored in advance, and the determination unit 34 can calculate the corresponding saturation temperature based on the inlet-side pressure value Pi by referring to the correspondence table. Specifically, the determination unit 34 calculates the saturation temperature tsi for the inlet-side pressure value Pi by temporary storage calculation from the two pressure values and saturation temperatures before and after the inlet-side pressure value Pi, which is the measured value. Next, the determination unit 34 calculates Ki = (tsi - Ti) / tsi from the saturation temperature tsi and the inlet-side temperature Ti (step S14). When Ki is greater than or equal to the threshold value si (Ki ≥ si) (step S15, Yes), it means that the inlet-side temperature Ti has decreased by a certain amount or more from the saturation temperature tsi for the inlet-side pressure value Pi. In this case, the determination unit 34 determines that it is in a blocked state (step S16). On the other hand, when Ki is less than the threshold value si (Ki < si) (step S15, No), the condensate discharge device 10 is not in a non-operating state or a blocked state, but in another state (normal or leakage).

[0022] The determination unit 34 determines the saturation temperature tso for the outlet-side pressure value Po in the same manner as in step S13 using the correspondence table (step S21). The determination unit 34 calculates Ko = To - tso, which indicates how many degrees higher the outlet-side temperature To is than the saturation temperature tso (the difference) (step S22). When Ko is less than the first temperature threshold so1 (Ko < so1) (step S23, No), the determination unit 34 determines that it is in a normal state (step S24). On the other hand, when Ko is greater than or equal to the first temperature threshold so1 (Ko ≥ so1) (step S23, Yes), it means that the outlet-side temperature To is higher than the saturation temperature tso for the outlet-side pressure value Po by a certain amount or more. In this case, the determination unit 34 determines that it is in a leakage state. Further, when Ko is greater than or equal to the second temperature threshold so2 (so1 < so2) (step S25, Yes), the determination unit 34 determines that the leakage amount is large (step S26). On the other hand, when Ko is less than the second temperature threshold so2 (so1 ≤ Ko < so2) (step S25, No), the determination unit 34 determines that the leakage amount is small (step S27).

[0023] Conventionally, as a device for discharging condensate (drain), there are float-type and disk-type condensate discharge devices (steam traps). For example, in order to monitor a float-type condensate discharge device, a monitoring module equipped with a temperature sensor and an acoustic sensor is installed upstream of the float-type steam trap, and a technique for detecting the normal state, clogging, and steam leakage of the condensate discharge device based on temperature, sound, and vibration is known (Patent Documents 2-4 and Non-Patent Documents 1-2).

[0024] Furthermore, when detecting the operating status of a condensate discharger having moving parts, such as a float-type or disk-type, using a temperature sensor and an acoustic sensor, the acoustic sensor is likely to detect noise from the various devices in the plant, such as sounds and vibrations. Accurately removing the noise can require a large amount of calculation and a long processing time. In contrast, according to this embodiment, the steam state is estimated from temperature and pressure data, which are free of noise such as sounds and vibrations, and the operating status of the condensate discharger 10 is determined. This allows the operating status of the condensate discharger 10 to be accurately determined without being affected by noise, eliminating the need for the calculations and processing time required for noise removal. Therefore, this embodiment is useful for accurately and easily determining the operating status of not only orifice-type condensate dischargers without moving parts, but also float-type or disk-type condensate dischargers with moving parts.

[0025] Although orifice-type condensate drainers are less prone to breakdowns because they have no moving parts, it cannot be guaranteed that they will not stagnate or leak steam due to clogging of the orifice hole caused by rust or foreign matter in the upstream piping, or fluctuations in condensate due to changes in operating conditions. Maintenance inspections include periodic inspections, confirmation inspections when operating conditions change, and inspections when signs of abnormality are detected. However, maintenance inspections require preparation and are time-consuming, and only determine the status at the time of the maintenance inspection, making it difficult to determine continuous conditions or trends. Furthermore, because orifice-type condensate drainers have no moving parts, it is not possible to determine the operating status of the condensate drainer using an acoustic sensor. In contrast, according to this embodiment, the steam state can be estimated from temperature and pressure data upstream and downstream of the orifice-type condensate drainer 10, and the operating status of the condensate drainer 10 can be determined.

[0026] Furthermore, steam plants are equipped with thousands of condensate drainage devices, and the investigation of these devices takes a great deal of time. While it would be desirable to rely on continuous information for a certain period of time to determine the status of equipment changes or changes in operating conditions, this increases the amount of work involved and makes implementation difficult. Even if the status were monitored by constantly monitoring pressure and temperature values ​​and transmitting them to a monitoring system, the investment required for building a continuous monitoring system in both hardware and software would be large, making it difficult to implement in many cases.

[0027] On the other hand, because orifice-type condensate drain devices are essentially failure-free, it is possible to determine the continuous state and trends of the condensate drain device from data collected over a certain period (several hours to several weeks) during maintenance and inspection, without constantly monitoring the pressure and temperature. It is considered effective to determine the state by measuring changes over several days or within an operating cycle at times such as during regular inspections, when installing or replacing equipment, when changing operating conditions, or when there are signs of an abnormality.

[0028] Conventional inspection methods only judged the instantaneous state at the time of inspection, but in this embodiment, by installing a collection device 20 at each sensor and transmitting the collected data for a set period to a judgment device 30, the operating state for the set period can be judged continuously. This makes it possible to clearly see changes in state over the course of a day or within an operating cycle, enabling more appropriate inspections, i.e., more advanced maintenance and inspection work. By being able to judge continuous states and trends, problems become clear and effective countermeasures can be taken.

[0029] According to this embodiment, simpler equipment (collection device 20 and determination device 30) is required than in a continuous monitoring system, resulting in a smaller investment. The installation locations of the collection device 20 and determination device 30 can be changed to suit the inspection work cycle (worker movement) and the plant space. The collection device 20 is highly portable because it is battery-powered and cordless. For example, the collection device 20 is connected to each sensor 15-18 near the condensate drainage device 10 under investigation via a connector, and temperature and pressure data is collected and recorded for a certain period. Then, the same collection device 20 is connected to each sensor 15-18 near another condensate drainage device 10 via a connector, and temperature and pressure data is collected and recorded for a certain period. The temperature and pressure data recorded in the collection device 20 can be transmitted to the determination device 30 via a portable USB memory or a USB cable, as appropriate. In this way, the collection device 20 and the determination device 30 are portable and can be shared by many condensate discharge devices 10 in the plant, so there is no need to install a collection device 20 and a determination device 30 for each condensate discharge device 10, and the number of devices required can be reduced. The on-site work required by workers is simply the attachment and detachment work of connecting the collection device 20 to each sensor 15-18 via a connector, which is safe and convenient and makes on-site maintenance and inspection work easier. [Explanation of symbols]

[0030] Determination system 1, condensate drain device 10, collection device 20, determination device 30.

Claims

1. a determining unit that determines whether the condensate discharge device is in an inactive state, a blocked state in which condensate is blocking the condensate discharge device, or another state based on an inlet side pressure value Pi that is the pressure on the inlet side of the condensate discharge device, and an inlet side temperature Ti that is the temperature on the inlet side; A determination device comprising:

2. The determination device according to claim 1, The determination unit determines whether the condensate discharge device is in a normal operating state or in a leak state in which steam is leaking, based on an outlet side pressure value Po, which is the pressure on the outlet side of the condensate discharge device, and an outlet side temperature To, which is the temperature on the outlet side. Judgment device.

3. a determination unit that determines whether the condensate discharge device is in a normal operating state or in a leaking state in which steam is leaking, based on an outlet-side pressure value Po that is the pressure on the outlet side of the condensate discharge device having an inlet for inputting steam and an outlet for discharging condensate, and an outlet-side temperature To that is the temperature on the outlet side; A determination device comprising:

4. The determination device according to claim 1, The determination unit determines a saturation temperature tsi for the inlet side pressure value Pi, and determines that the blocked state exists when Ki=(tsi-Ti) / tsi is equal to or greater than a threshold value si (Ki≧si). Judgment device.

5. The determination device according to claim 1, The determination unit determines that the inlet pressure value Pi is less than a pressure threshold value pi (Pi<pi). Judgment device.

6. The determination device according to claim 2 or 3, The determination unit determines a saturation temperature tso for the outlet side pressure value Po, and determines that the leakage state exists when Ko=To-tso is equal to or greater than a first temperature threshold value so1 (Ko≧so1). Judgment device.

7. The determination device according to claim 6, The determination unit determines that the leakage amount is large when Ko is equal to or greater than a second temperature threshold value so2 that is higher than the first temperature threshold value so1 (Ko≧so2), and determines that the leakage amount is small when Ko is less than the second temperature threshold value so2 (so1≦Ko<so2). Judgment device.

8. 7. The determination device according to claim 6, wherein when Ko is less than the first temperature threshold value so1 (Ko<so1), the device determines that the state is normal. Judgment device.

9. The determination device according to claim 2, The determination unit acquires the inlet-side pressure value Pi, the inlet-side temperature Ti, the outlet-side pressure value Po, and the outlet-side temperature To output from a collection device that periodically collects and records the inlet-side pressure value Pi based on the output of an inlet-side pressure sensor installed in an inlet-side pipe connected to the inlet of the condensate discharge device, the inlet-side temperature Ti based on the output of an inlet-side temperature sensor installed in the inlet-side pipe, the outlet-side pressure value Po based on the output of an outlet-side pressure sensor installed in an outlet-side pipe connected to the outlet of the condensate discharge device, and the outlet-side temperature To based on the output of an outlet-side temperature sensor installed in the outlet-side pipe. Judgment device.

10. The determination device according to any one of claims 1 to 5, the condensate drain device is an orifice type; The determining unit determines the state of the orifice-type condensate draining device. Judgment device.

11. The computer of the determination device a step of determining whether the condensate discharge device is in an inactive state, a blocked state in which condensate is blocking the condensate discharge device, or another state based on an inlet side pressure value Pi, which is the pressure on the inlet side of the condensate discharge device, and an inlet side temperature Ti, which is the temperature on the inlet side; A judgment program that executes the above.

12. The computer of the determination device executes a step of determining whether the condensate discharge device is in an inoperative state, in a blocked state where condensate is blocking the condensate discharge device, or in another state, based on an inlet-side pressure value Pi, which is the pressure on the inlet side of the condensate discharge device, and an inlet-side temperature Ti, which is the temperature on the inlet side. Judgment method.

13. The determination method according to claim 12, The computer of the determination device executes a step of determining whether the condensate discharge device is in a normal operating state or in a leaking state in which steam is leaking, based on an outlet side pressure value Po, which is the pressure on the outlet side of the condensate discharge device, and an outlet side temperature To, which is the temperature on the outlet side. Judgment method.

14. The determination method according to claim 13, connecting a collection device to an inlet pressure sensor installed in an inlet pipe connected to the inlet of the condensate drainage device, an inlet temperature sensor installed in the inlet pipe, an outlet pressure sensor installed in an outlet pipe connected to the outlet of the condensate drainage device, and an outlet temperature sensor installed in the outlet pipe; The collecting device periodically collects and records the inlet side pressure value Pi based on the output of the inlet side pressure sensor, the inlet side temperature Ti based on the output of the inlet side temperature sensor, the outlet side pressure value Po based on the output of the outlet side pressure sensor, and the outlet side temperature To based on the output of the outlet side temperature sensor; outputting the inlet-side pressure value Pi, the inlet-side temperature Ti, the outlet-side pressure value Po, and the outlet-side temperature To recorded in the collection device to the determination device; The determination method further comprises:

15. The determination method according to claim 13, connecting a collector to an inlet temperature sensor installed in an inlet pipe connected to the inlet of the condensate drainage device and an outlet temperature sensor installed in an outlet pipe connected to the outlet of the condensate drainage device; The collecting device periodically collects and records the inlet-side temperature Ti based on the output of the inlet-side temperature sensor and the outlet-side temperature To based on the output of the outlet-side temperature sensor; a step of outputting the inlet-side temperature Ti and the outlet-side temperature To recorded in the collection device to the determination device; a step of outputting to the determination device the inlet-side pressure value Pi based on the output of an inlet-side pressure sensor installed in an inlet-side pipe connected to the inlet of the condensate draining device and the outlet-side pressure value Po based on the output of an outlet-side pressure sensor installed in an outlet-side pipe connected to the outlet of the condensate draining device, which are periodically collected and recorded; The determination method further comprises:

16. a determining device having a determining unit that determines whether the condensate discharge device is in an inoperative state, a blocked state in which condensate clogs the condensate discharge device, or another state, based on an inlet-side pressure value Pi that is the pressure on the inlet side of the condensate discharge device, the inlet-side temperature Ti that is the temperature on the inlet side, and that determines whether the condensate discharge device is in a normal operating state or a leakage state in which steam is leaking, based on an outlet-side pressure value Po that is the pressure on the outlet side of the condensate discharge device, and an outlet-side temperature To that is the temperature on the outlet side; a collection device that periodically collects and records the inlet-side pressure value Pi based on the output of an inlet-side pressure sensor installed in an inlet-side piping connected to the inlet of the condensate discharge device, the inlet-side temperature Ti based on the output of an inlet-side temperature sensor installed in the inlet-side piping, the outlet-side pressure value Po based on the output of an outlet-side pressure sensor installed in an outlet-side piping connected to the outlet of the condensate discharge device, and the outlet-side temperature To based on the output of an outlet-side temperature sensor installed in the outlet-side piping, which are output to the determination device. A determination system comprising:

17. A condensate discharge device has an inlet through which steam is input and an outlet through which condensate is discharged, and the device determines whether the condensate discharge device is in an inoperative state, a blocked state in which condensate clogs the condensate discharge device, or another state based on an inlet pressure value Pi that is the pressure on the inlet side and an inlet temperature Ti that is the temperature on the inlet side of the condensate discharge device, and periodically collects and records the inlet pressure value Pi based on the output of an inlet pressure sensor installed in an inlet piping connected to the inlet of the condensate discharge device, the inlet temperature Ti based on the output of an inlet temperature sensor installed in the inlet piping, the outlet pressure value Po based on the output of an outlet pressure sensor installed in an outlet piping connected to the outlet of the condensate discharge device, and the outlet temperature To based on the output of an outlet temperature sensor installed in the outlet piping. Collection device.

Images