JP2016114108A - Float operation detection system of steam trap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a float operation detection system of a steam trap, capable of improving estimation accuracy of an operation state of the steam trap by detecting operation state of a float of the steam trap.SOLUTION: A float operation detection system of a steam trap discharging drain occurring in a steam piping system by opening/closing a valve port according to lifting/lowering of a float in a valve chamber, includes an operation detection sensor and communication control means. The operation detection sensor is fixed and arranged to the hollow inside of the float so that its centroid is positioned lower than a center, and detects operation of the float. The communication control means can transmit the detection result of the operation detection sensor to other devices.SELECTED DRAWING: Figure 1

Description

  The present application relates to a steam trap float operation detection system that discharges drain generated in a steam piping system by opening and closing a valve opening in accordance with the raising and lowering of a float in a valve chamber.

  A float type steam trap disposed in a steam piping system such as a steam plant discharges drain generated in the steam piping system. Drain is generated when a part of the steam condenses, causing a reduction in the operating efficiency of steam-using equipment such as a boiler. Therefore, in order to maintain the drain discharge function, the operation state of the steam trap is regularly checked.

  The operating state of the steam trap is estimated mainly by temperature and ultrasonic waves (vibration) (see, for example, Patent Document 1). The operation state detection device described in Patent Literature 1 includes a temperature sensor and a vibration sensor, and is disposed on the upper outer surface of the steam trap.

Japanese Patent No. 443023

  As described above, the float-type steam trap has its operating state estimated by temperature and ultrasonic waves, but the accuracy of the estimation is limited. For example, the leakage amount of steam discharged together with drain from the steam trap is estimated from the relationship between the ultrasonic wave generated from the inside of the trap and the amount of drain flowing into the steam trap. Here, since the drain amount cannot be measured from temperature and ultrasonic waves, a representative value is used. Although it is conceivable to provide a flow meter in the steam trap, the cost of the flow meter is high, and for example, tens of thousands of flow meters are installed in one plant.

  It is an object of the present application to provide a steam trap float operation detection system capable of improving the accuracy of estimation of the steam trap operation state by detecting the steam trap float operation state.

  A steam trap float operation detection system that discharges drainage generated in the steam piping system by opening and closing the valve opening according to the raising and lowering of the float in the valve chamber disclosed in the present application includes an operation detection sensor and a communication control unit. The motion detection sensor is fixedly disposed in the hollow interior of the float whose center of gravity is located below the center, and detects the motion of the float. The communication control means can transmit the detection result of the motion detection sensor to another device.

  The steam trap float motion detection system further identifies a float height motion and inclination based on the detection result, and estimates a drain amount flowing into the steam trap based on the identification result. Means may be provided.

  The steam trap float motion detection system further identifies the float height direction motion and inclination based on the detection result, and the steam trap rest state and drain flow channel clogging state based on the identification result. There may be provided a state estimating means for estimating.

  The motion detection sensor may be a gyro sensor.

  According to the steam trap float motion detection system disclosed in the present application, the motion of the float is detected by fixing the motion detection sensor inside the hollow of the float. Since the float operates regularly with respect to the amount of drain flowing into the steam trap, the operating state of the steam trap can be estimated with higher accuracy from the specific float operation specified based on the detection result. Can do. In addition, the operation state of the steam trap can be estimated with higher accuracy by referring to the operation of the float together with the temperature and ultrasonic information of the steam trap.

It is a figure which shows the structure of the float operation | movement detection system of the float type steam trap which concerns on Example 1. FIG. It is a figure which shows the cross section of a valve casing. It is an enlarged view of a float type steam trap. It is a perspective view of the float of the state which permeate | transmitted the inside. It is a block diagram which shows the structure of an operation | movement detection part and a terminal device. It is explanatory drawing explaining operation | movement of a float. It is explanatory drawing explaining operation | movement of a float. It is a flowchart which shows the estimation process of the operating state of the float of a terminal device. It is a figure which shows the structure of the monitoring system containing the float operation | movement detection system of the float type steam trap which concerns on Example 2. FIG. It is sectional drawing which shows the structure of the float concerning other Examples. It is sectional drawing which shows the structure of the float concerning other Examples.

  A steam trap float motion detection system according to the present application will be described with reference to the drawings. In the following examples, a float operation detection system for a float steam trap disposed in a steam piping system included in a steam plant or the like will be described. The configuration of the steam trap float operation detection system disclosed in the present application is not limited to the embodiment. Further, the order of the various processes constituting the flow described below is in no particular order as long as no contradiction occurs in the processing contents.

Configuration of First Float Steam Trap 100 FIG. 1 shows a partial cross section of a float steam trap 100 (hereinafter, steam trap 100). FIG. 2 shows a cross-sectional view of the valve casing 101 of the steam trap 100 shown in FIG. FIG. 3 is an enlarged view of the steam trap 100 shown in FIG. FIG. 3 shows a state in which the trap state acquisition sensor S is removed. The Z-axis direction is the height direction (gravity direction), and the X-axis and Y-axis directions indicate the horizontal direction.

  As shown in FIG. 1, the steam trap 100 includes a valve casing 101, a float 11, a valve seat member 9, and a closing member 15. In addition, a trap state acquisition sensor S is attached to the steam trap 100. The trap state acquisition sensor S measures the temperature and ultrasonic waves of the steam trap 100 indicating the operating state of the steam trap 100. Specifically, the temperature and ultrasonic waves of the valve casing 101 (described later) are acquired.

  As shown in FIG. 2, the valve casing 101 is formed by connecting the main body 17 and the lid 18 with a bolt 19. The valve casing 101 includes an outlet passage 6 (hereinafter referred to as a first outlet passage 6) formed in the valve chamber 4, the inlet 5, and the main body 17, an outlet passage 10 (hereinafter referred to as a second outlet passage) formed in the outlet 7 and the lid 18. 10), a closure member mounting space 127 and a valve seat member mounting space 129 are provided.

  The valve chamber 4 is formed as a space located inside the valve casing 101. The inlet 5 is formed so as to communicate with the valve chamber 4. The inlet 5 receives steam and drain flowing from the outside of the valve casing 101. The outlet 7 allows the steam or drain that has flowed into the valve casing 101 from the inlet 5 to flow out of the valve casing 101. The first outlet passage 6 is formed so as to communicate with the outlet 7. The second outlet passage 10 communicates with the first outlet passage 6 and the valve seat member mounting space 129 (described later).

  The closing member mounting space 127 and the valve seat member mounting space 129 are formed in the lid 18. The closing member mounting space 127 and the valve seat member mounting space 129 are formed continuously. The closing member mounting space 127 is formed so as to communicate with the outside, while the valve seat member mounting space 129 is formed so as to communicate with the valve chamber 4. Further, the plug member mounting space 127 is plugged by the plug member 15, and communication with the outside is blocked.

  The main body 17 of the valve casing 101 has a sensor mounting hole Sa for mounting the trap state acquisition sensor S. The trap state acquisition sensor S acquires the temperature and vibration (ultrasonic wave) of the valve casing 101 via the bottom surface PS of the sensor mounting hole Sa.

  Returning to FIG. 1, the float 11 is a hollow spherical object placed in the valve chamber 4. The float 11 moves up and down the valve chamber 4 according to the amount of drain stored in the valve chamber 4. A float motion detection system 1 (described later) is disposed inside the hollow of the float 11.

  The valve seat member 9 is attached to the valve seat member mounting space 129 (see FIG. 2) of the lid 18. Thereby, the valve seat member 9 is disposed in the lower part of the valve chamber 4. As shown in FIG. 3, the valve seat member 9 has a valve port 109 a and a discharge passage 8. The valve chamber 4 communicates with the discharge passage 8 through the valve port 109a. Further, the discharge passage 8 communicates with the outlet 7 through the valve seat member mounting space 129, the second outlet passage 10, and the first outlet passage 6. That is, the valve chamber 4 communicates with the outlet 7 through the valve port 109a.

  The valve port 109 a is opened and closed depending on the position of the float 11 in the valve chamber 4 based on the amount of drain stored in the valve chamber 4. For example, when the drain stored in the valve chamber 4 is a predetermined amount or less, the float 11 is seated on the valve seat member 9 and the valve port 109a is closed. On the other hand, when the drain accumulated in the valve chamber 4 is larger than a predetermined amount, the float 11 is separated from the valve seat member 9, and the valve port 109a is opened. Steam or drain that flows into the valve chamber 4 from the inlet 5 in the state in which the valve port 109a is opened flows out of the valve casing 101 from the outlet 7 through the valve port 109a.

Configuration of Second Float Operation Detection System 1 FIG. 4 is a perspective view of the float 11 in a state where the inside is transmitted. FIG. 5 is a block diagram illustrating the configuration of the motion detection unit 30 and the terminal device 60. As described above, the float motion detection system 1 is disposed inside the hollow of the float 11. The float motion detection system 1 includes a motion detection unit 30 and the like, and detects the motion of the float 11. Specifically, as shown in FIG. 4, the angular velocities around the x-axis, y-axis, and z-axis of the float 11 are detected.

  The motion detection unit 30 is fixedly disposed on the upper surface of the plate member 50 so as to be positioned a predetermined distance below the center O of the float 11. The plate member 50 is formed of a heat insulating material such as a heat insulating resin, and is supported by the support bar 51 so that the plate surface direction is parallel to the xy plane. The support bar 51 is formed of a heat insulating material similar to that of the plate member 50, and one end thereof is bonded to the inner wall of the float 11. A weight 70 is fixedly disposed on the lower surface of the plate member 50.

  As shown in FIG. 1, the float 11 has a center of gravity G at a position different from the center O due to the weight of the weight 70 or the like. Specifically, it is located below the center O. Further, the float 11 is arranged in the valve chamber 4 with the center of gravity G as shown in FIG.

  As shown in FIG. 5, the motion detection unit 30 includes a control unit 31, a storage unit 32, a motion detection sensor 33, a communication control unit 34, a drive power source 35, and the like, and the motion detection result (angular velocity) of the float 11. A data logger to memorize. The control unit 31 includes a CPU and stores the detection results received from the motion detection sensor 33 in the storage unit 32 in time series. The storage unit 32 is, for example, a flash memory.

  The motion detection sensor 33 is, for example, a three-axis vibration gyro sensor, and detects the angular velocities around the x-axis, y-axis, and z-axis of the float 11 and transmits them to the control unit 31. Based on these angular velocities, the operation (tilt, rotation, movement, etc.) of the float 11 can be specified.

  In addition, the control unit 31 transmits the detection result stored in the storage unit 32 to the terminal device 60 and the like together with the identification information via the communication control unit 34. In this embodiment, the identification information of the steam trap 100 is transmitted to the terminal device 60 or the like in association with the detection result. Thereby, it is possible to specify which steam trap 100 is the identification information. The communication control unit (communication control means) 34 has a wireless communication circuit and controls wireless communication (for example, packet communication) with the terminal device 60 and the like.

  As the drive power source 35, a battery power source such as a lithium battery or a power generation module (energy harvest) using a vibration power generation element or the like can be applied, and power is supplied to each unit such as the control unit 31.

  The terminal device 60 is, for example, a personal computer or a tablet terminal having a wireless communication function, receives a detection result of the operation of the float 11 from the operation detection unit 30, identifies a specific operation, and operates the steam trap 100. Estimate the state. As illustrated in FIG. 5, the terminal device 60 includes a control unit 61, a communication control unit 62, a display unit 63, an operation unit 64, and the like. The control unit 61 is configured by a CPU or the like, receives a detection result of the operation of the float 11 from the operation detection unit 30, identifies a specific operation, and estimates the operating state of the steam trap 100. The specification of the motion of the object using the gyro sensor is a general configuration for performing an integral operation or the like, and thus detailed description thereof is omitted.

  The communication control unit 62 includes a wireless communication circuit and controls wireless communication with the operation detection unit 30. The display unit 63 is a liquid crystal display, for example. The operation unit 64 is, for example, a keyboard and receives an operation input from an operator or the like.

Operation of the third float 11 Overview of Operation of Float Steam Trap 100 An overview of the operation of the steam trap 100 including the operation of the float 11 will be described.

  The high-temperature drain that has flowed from the inlet 5 flows into the valve chamber 4. When a predetermined amount of drain is stored in the valve chamber 4, the float 11 starts to be separated from the valve seat member 9 by rising. More specifically, the float 11 rotates with the upper side of the distal end portion of the valve seat member 9 as a fulcrum and is separated from the valve seat member 9 (see FIG. 6B). As a result, the valve port 109a is opened, and the drain in the valve chamber 4 flows into the valve port 109a and passes through the discharge passage 8, the valve seat member mounting space 129, the second outlet passage 10, and the first outlet passage 6. Then, it flows out (discharges) from the outlet 7 to the outside of the steam trap 100.

2. Outline of the operation of the float 11 with respect to the drain amount The float 11 moves up and down according to the amount of drain in the valve chamber 4 as described above, but operates in a predetermined pattern with respect to the amount of drain. An outline of the operation of the float 11 will be described with reference to FIGS. 6 and 7 are explanatory views for explaining the operation of the float 11, and show a partial cross section of the steam trap 100. FIG. 6 shows a case where the drain amount fluctuates, FIG. 6A shows a state where the float 11 is seated on the valve seat member 9, and FIG. 6B shows a state where the float 11 shows the valve seat member 9. It shows the state of being away from. FIG. 7A shows a case where the amount of drainage in the valve chamber 4 is always small. FIG. 7B shows a case where the amount of drainage in the valve chamber 4 is always large. Moreover, in FIG. 6, FIG. 7, the liquid level W of a drain is illustrated with a dotted line.

  First, the case where the amount of drainage in the valve chamber 4 varies will be described. When the amount of drain fluctuates, the amount of drain flowing into the steam trap 100 (valve chamber 4) is within an assumed range, and the drain continuously flows into the steam trap 100 and is discharged from the valve chamber 4 to the outside. State.

  When the drain of the valve chamber 4 reaches a predetermined amount, as shown in FIG. 6 (B), the float 11 starts to float and rotates with the upper side of the tip of the valve seat member 9 as a fulcrum. Take a seat. Thereby, the valve port 109a is opened. At this time, since the float 11 also rotates so that the center of gravity G is at the lowest position, the plate surface direction of the plate member 50 is parallel to the horizontal direction (XY plane). That is, the height direction (Z-axis direction) and the z-axis direction of the float 11 are in a parallel state.

  As a result, the drain in the valve chamber 4 flows out to the valve port 109a and decreases below a predetermined amount. Thereafter, the float 11 is lowered while rotating and is seated on the valve seat member 9 shown in FIG. Thereby, the valve port 109a is closed. In addition, since the float 11 rotates using the upper side of the front-end | tip part of the valve seat member 9 as a fulcrum, as shown in FIG. That is, the z-axis direction of the float 11 is inclined with respect to the height direction (Z-axis direction).

  Then, when the drain reaches a predetermined amount again thereafter, the float 11 is separated from the valve seat member 9 as shown in FIG. That is, the float 11 moves up and down in the height direction (Z-axis direction) while swinging with the valve seat member 9 as a fulcrum as the drain amount changes.

  Next, a case where the amount of drainage in the valve chamber 4 is always small will be described. As shown in FIG. 7A, if the drain amount in the valve chamber 4 does not always reach a predetermined amount, the float 11 is seated on the valve seat member 9 and is not affected by the drain and does not operate. Only slightly change. Further, as described above, the float 11 seated on the valve seat member 9 is frequently inclined. That is, the float 11 is tilted with almost no operation. Such an operation of the float 11 is likely to cause the steam trap 100 to be in a dormant state.

  Next, a case where the amount of drain in the valve chamber 4 is always large will be described. As shown in FIG. 7B, when the amount of drainage in the valve chamber 4 is always equal to or greater than the predetermined amount, the float 11 is separated from the valve seat member 9 and floats on the liquid level W. . Therefore, as described above, the plate surface direction of the plate member 50 is parallel to the horizontal direction (XY plane) due to the relationship with the center of gravity G.

  Note that when the amount of drain is always large, the change in the liquid level is small, and therefore the movement of the float 11 in the height direction is small. Moreover, since the float 11 is in a floating state, it may rotate in a random direction in the horizontal direction. That is, the float 11 hardly operates or rotates in the horizontal direction, and the plate surface direction of the plate member 50 is in a state parallel to the horizontal direction. In such an operation of the float 11, there is a high possibility that some clogging (abnormality) has occurred between the valve port 109a and the outlet 7.

4). As described above, since the float 11 operates in a predetermined pattern with respect to the amount of drain, the specific operation of the float 11 is specified based on the detection result of the motion detection sensor 33, and steam is detected. The operating state of the trap 100 can be estimated. Specifically, the amount of drain flowing into the steam trap 100 can be estimated. Further, it is possible to estimate the resting state and clogging state of the steam trap 100.

  For example, when it is specified that the float 11 moves up and down in the height direction (Z-axis direction), the drain flows continuously as shown in FIGS. 6 (A) and 6 (B). Presumed to be discharged. That is, it can be estimated that the steam trap 100 is operating appropriately.

  Further, when it is specified that the float 11 hardly moves for a certain period and is tilted, it is estimated that the amount of drain is always small as shown in FIG. Further, it is estimated that there is a high possibility that the steam trap 100 is in a dormant state.

  Further, when it is specified that the float 11 hardly moves or rotates in a horizontal direction for a certain period and is not inclined, the amount of drain is always large as shown in FIG. 7B. Presumed to be. Further, it is estimated that there is a high possibility that some clogging has occurred between the valve port 100a and the outlet 7 of the steam trap 100.

  In this embodiment, the operation of the float 11 described above and various estimations are performed by the terminal device 60. FIG. 8 is a flowchart showing an estimation process of the operating state of the float 11 of the terminal device 60. This process is executed by the control unit 61 when the terminal device 60 starts communication with the operation detection unit 30.

  First, the control unit 61 sends a detection result transmission request to the motion detection unit 30 (step S10), and waits until the detection result is received (step S11: YES). The operation detection unit 30 that has received the transmission request transmits, for example, detection results for a predetermined period from the present to the past. The predetermined period may be a period that can specify the operation of the float 11. When the detection result is received (step S11: YES), the control unit 61 performs a specifying process for specifying the operation of the float 11 based on the detection result as described above (step S12). Next, the control unit 61 performs a drain amount, a rest state, and a clogged state estimation process based on the identified operation of the float 11 (step S13). Thereafter, the control unit 61 displays the estimation result on the display unit 63 (step S14).

  In this embodiment, the operation detection unit 30 wirelessly transmits the detection result directly to the terminal device 60. However, a repeater (repeater) or the like is arranged in the valve casing 101 in accordance with the output performance of the radio wave. However, it may be transmitted to the terminal device 60 via a repeater.

  As described above, the movement of the float 11 is detected by fixing the movement detection sensor 33 inside the hollow of the float 11. Since the float 11 operates regularly according to the amount of drain flowing into the steam trap 100, the operation state of the steam trap 100 such as the drain amount and the resting state is determined from the operation of the float 11 specified based on the detection result. Can be estimated with higher accuracy.

  Further, the operation state of the steam trap 100 can be estimated with higher accuracy by referring to the operation of the float 11 together with information such as the temperature and ultrasonic waves of the steam trap 100.

  For example, the leak amount of steam discharged from the steam trap 100 together with the drain can be estimated using the estimated drain amount and the ultrasonic wave of the steam trap 100. The amount of steam leakage is estimated from the relationship between the amount of drain flowing into the steam trap 100 and the ultrasonic waves generated from the inside of the trap. In this embodiment, as described above, since the drain amount can be estimated in three stages within the assumed range, less than the assumed range, and more than the assumed range, the drain amount (numerical information) at each stage is set in advance. The steam leakage amount is estimated from the relationship between the estimated drain amount (numerical information) and the measured ultrasonic wave. Conventionally, a single representative value is estimated as the amount of drain, but the float motion detection system 1 of the present application can improve the accuracy of estimation of the leakage amount.

  In addition, for example, it is possible to estimate with high accuracy whether the steam trap 100 is in a dormant state by using the estimated drain amount and the temperature of the steam trap 100. As described above, when the amount of drainage in the valve chamber 4 shown in FIG. 7 (A) is always small, the float 11 is tilted with almost no operation. In this case, although there is a high possibility that the steam trap 100 is in a dormant state, it is estimated whether the steam trap 100 is in a dormant state depending on the temperature of the steam trap 100.

  Specifically, when the temperature is low, the drain itself does not flow into the valve chamber 4 from the inlet 5, so that it can be estimated as a resting state. That is, the valve upstream of the steam trap 100 is closed and the drain does not flow into the steam trap 100. On the other hand, when the temperature is high, it can be determined that there is almost no inflow amount but high-temperature drain is flowing in, so it can be estimated that the steam trap 100 is not in a resting state but is simply in a state where the drain amount is small.

  Furthermore, for example, it is possible to estimate with high accuracy whether the steam trap 100 is clogged using the estimated drain amount and the temperature of the steam trap 100. As described above, when the amount of drainage in the valve chamber 4 shown in FIG. 7B is always large, the float 11 is separated from the valve seat member 9 and floats on the liquid level W. In this case, there is a high possibility that some clogging (abnormality) has occurred between the valve port 109 a and the outlet 7, but it is estimated whether the clogged state is in accordance with the temperature of the steam trap 100.

  Specifically, when the temperature is low, some clogging occurs, the drain of the valve chamber 4 is full, and high temperature drain does not flow from the inlet 5, and the drain temperature of the valve chamber 4 decreases. Therefore, it can be estimated that clogging has occurred. On the other hand, when the temperature is high, it can be determined that a large amount of high-temperature drain is flowing in. Therefore, it can be estimated that the steam trap 100 is not in a clogged state but simply in a large amount of drain.

  In addition, what is necessary is just to refer to the measured value of the trap state acquisition sensor S for the ultrasonic wave and temperature of the steam trap 100, for example.

  Moreover, in the Example mentioned above, although the detection result is stored in the memory | storage part 32, it is not necessary to store. For example, the detection result detected in real time may be transmitted to the terminal device 60. In this case, the storage unit 32 may not be provided.

  Furthermore, in the above-described embodiment, the detection result is output to another device by wireless communication, but is not particularly limited thereto. For example, wired communication may be used. Specifically, the float 11 may be taken out from the valve chamber 4 and the detection result of the storage unit 32 may be acquired by wired connection. In this case, an input / output port such as a USB connected to the control unit 31 is provided on the external wall surface of the float 11, a portable memory device is connected to the input / output port, and the detection result of the storage unit 32 is transferred to the memory device. You may do it. Alternatively, the taken-out float 11 may be separated into two parts to expose the motion detection unit 30, and a terminal device or the like may be directly connected to the motion detection unit 30 via a wire to obtain the detection result of the storage unit 32. Good.

  Moreover, although the float operation | movement detection system 1 of the Example mentioned above is a structure which transmits the detection result of the operation | movement of the float 11 to another apparatus, it is not limited to this in particular. You may make it include the structure which estimates the operating state of the steam trap 100 mentioned above. In this case, since the control unit 61 of the terminal device 60 functions as a drain amount estimation unit and a state estimation unit, the terminal device 60 is included in the float motion detection system 1.

  This embodiment differs from the first embodiment described above in the configuration in which the float motion detection system transmits the detection result to the server device. This different configuration will be described with reference to FIG. Since other configurations are the same as those in the first embodiment, the description thereof is omitted.

  FIG. 9 is a diagram illustrating a configuration of a monitoring system 200 including a plurality of steam traps 100. The monitoring system 200 stores and manages the temperature, ultrasonic wave, and operation of the float 11 in the database 213 for each steam trap 100 arranged in the plant. The float motion detection system 301 of the present application is included in the monitoring system 200.

  The monitoring system 200 includes a plurality of float operation detection systems 301, a plurality of trap state acquisition sensors SS, a server device 201, a plurality of terminal devices 202, and the like connected to a communication network 250 such as a local area network.

  The float motion detection system 301 includes a motion detection unit 330 and the like, and transmits a motion detection result of the float 11 to the server device 201. The operation detection unit 330 transmits the detection result of the operation of the float 11 acquired from the operation detection sensor 33 by the control unit 331 to the server device 201 via the communication control unit 34. For example, every time a predetermined time arrives once a day, the control unit 331 stores the detection result in the storage unit 32 for a predetermined time from the predetermined time, and the server device 201 together with the identification information of the steam trap 100 arranged. Send to. The predetermined time may be a time that can specify the operation of the float 11.

  The trap state acquisition sensor SS includes a control unit (not shown), a communication control unit, an ultrasonic reception sensor, a temperature sensor, and the like, and detects the ultrasonic wave and temperature of the steam trap 100 arranged in the same manner as in the first embodiment. For example, the trap state acquisition sensor SS stores a detection result in a storage unit (not shown) for a predetermined time from a predetermined time every time a predetermined time arrives once a day, similar to the operation detection unit 330, and is arranged. It is transmitted to the server apparatus 201 together with the identification information of the steam trap 100 that has been set.

  The server device 201 includes a control unit 211, a communication control unit 212, a database 213, and the like, and stores and manages each piece of information of the plurality of steam traps 100 received from the plurality of float motion detection systems 301 and the plurality of trap state acquisition sensors SS. . The control unit 241 includes a CPU and the like, and controls the operation of the entire apparatus based on a program, data, and the like stored in a storage unit (not shown). The communication control unit 242 is wired to the communication network 250 and controls communication with the operation detection unit 330 and the trap state acquisition sensor SS. The database 213 stores information on each of the plurality of steam traps 100.

  In addition, the control unit 221 identifies the operation of the float 11 and performs various estimations based on the detection result, similarly to the terminal device 60 of the first embodiment.

  The terminal device 202 is, for example, a personal computer or a tablet terminal having a communication function. The terminal device 202 acquires each piece of information on the steam trap 100 from the server device 201 and displays the information on the display unit 223. The terminal device 202 includes a control unit 221 configured by a CPU and the like, a communication control unit 222 that controls communication, a display unit 223 such as a liquid crystal display, an operation unit 224 such as a keyboard, and the like.

  Thereby, since an operator etc. can acquire each information of the steam trap 100 using the terminal device 202, it grasps | ascertains the operating state of the steam trap 100, without moving to the location in which each steam trap 100 is arrange | positioned. be able to.

  The configuration of the float motion detection system 301 may include a server device 201 that functions as a drain amount estimation unit and a state estimation unit.

[Other examples]
In each of the above-described embodiments, the motion detection unit acquires the detection result of the motion detection sensor and transmits it to another device. However, the control unit of the motion detection unit identifies the float operation and estimates the drain amount and the like. Then, this estimation result may be transmitted to a terminal device or the like. That is, the control unit of the motion detection unit may function as a drain amount estimation unit and a state estimation unit.

  Further, in each of the above-described embodiments, a true spherical float is used. However, the embodiment is not particularly limited as long as at least a region portion in contact with the valve port has a curved shape. For example, as shown in FIG. 10, a float 311 in which the lower half has a semicircular shape and the upper half has a trapezoidal shape may be used. FIG. 10 is a cross-sectional view of the float 311. The illustration of the operation detection unit 30 and the like is omitted.

  Further, in each of the above-described embodiments, the motion detection unit is fixedly arranged inside the float using a plate member, but the present invention is not particularly limited thereto. For example, as illustrated in FIG. 11, the motion detection unit 30 may be disposed on the lid member 415 of the float 411. The lid member 415 has a screw groove (not shown) formed on the side surface, and is screw-coupled to a screw groove (not shown) on the peripheral surface forming a through hole 416 formed in the main body of the float 411. FIG. 11 is a cross-sectional view of the float 411.

In each of the above-described embodiments, the gyro sensor is used as the motion detection unit, but the present invention is not particularly limited to this. For example, an acceleration sensor may be used.
Finally, the float operation detection system of the present application is not limited to the steam trap of each of the above-described embodiments, and can be applied as long as the float performs a specific operation.

  The present application is useful for improving the accuracy of estimation of the operating state of the steam trap by detecting the operating state of the float of the steam trap. For example, it can be used in an industrial field in which a steam plant or the like of a power generation facility using a steam trap is manufactured, sold, or operated.

DESCRIPTION OF SYMBOLS 1,301 Float operation detection system 4 Valve chamber 11, 311, 411 Float 30, 330 Operation detection part 31, 331 Control part 32 Memory | storage part 33 Operation detection sensor 34 Communication control part 100 Float type steam trap 109a Valve port

Claims (4)

A steam trap float operation detection system that discharges drain generated in the steam piping system by opening and closing the valve opening according to the raising and lowering of the float in the valve chamber,
An operation detection sensor that is fixedly arranged in the hollow of the float whose center of gravity is located below the center and detects the operation of the float;
A steam trap float motion detection system comprising: a communication control unit capable of transmitting a detection result of the motion detection sensor to another device.   The drain amount estimating means for specifying the amount and the amount of drain flowing into the steam trap based on the specified result, further specifying an operation and an inclination in the height direction of the float based on the detection result. Steam trap float motion detection system.   The apparatus further comprises state estimation means for identifying the height direction operation and inclination of the float based on the detection result, and estimating the pause state of the steam trap and the clogged state of the drain flow path based on the identification result. Item 3. The steam trap float operation detection system according to Item 1 or 2.   4. The steam trap float motion detection system according to claim 1, wherein the motion detection sensor is a gyro sensor.

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