JP2018163098A - Gas treating apparatus, gas treatment method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas treating apparatus, a gas treatment method, and a program capable of contributing to safe treatment of gas discharged from a gas meter following to a purge work to the gas meter.SOLUTION: When a gas meter 10 in which purging of residual air is not completed yet is mounted to a gas inlet tube 12 for allowing flammable gas to flow into the gas meter 10 and a gas outlet tube 14 for discharging gas from the gas meter 10, a vessel 22 including a supply port 22B for taking in gas and an opening 22A for dispersing gas takes in gas distributed from a gas outlet tube 18a from the supply port 22B, and a blower 34 blows air so as to dilute gas taken into the vessel 22 from the supply port 22B and disperse it from the opening 22A.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a gas processing apparatus, a gas processing method, and a program.

  The gas used by a consumer is supplied to each consumer via a gas pipe and a gas meter. In addition, the gas meter is obliged to be replaced at regular intervals according to the measurement law. When the gas meter is replaced, air remains in the replaced new gas meter. Therefore, after the gas meter is replaced, an operation of purging the air remaining in the gas meter is performed (see, for example, Patent Document 1 and Patent Document 2). Hereinafter, for convenience of explanation, the air remaining in the new gas meter is referred to as “residual air”. Hereinafter, for convenience of explanation, the operation of purging residual air is referred to as “purge operation”.

  Conventionally, when performing a purge operation, the gas test opening of the gas outlet of the gas meter is opened, the gas is supplied from the gas inlet pipe to the gas meter, and the residual air is diffused into the atmosphere via the gas test opening. As described in Patent Document 3, an ignition test was performed on site. Further, in recent years, a gas recovery container is connected to a gas test port through a conduit, and the purged residual air and the gas released along with the purge operation are recovered in the gas recovery container (for example, , See Patent Document 4). There is also known a method of previously replacing residual air in a gas meter with gas (for example, see Patent Document 5).

JP 2003-166867 A Japanese Patent No. 5295159 Japanese Patent No. 3778388 Japanese Patent No. 3589192 JP 2006-53071 A

  However, in a conventional purge operation, for example, when performing a combustion process, it is necessary to enter a house such as a consumer's home, which is restricted in operation. In addition, when performing an ignition test using the test outlet of the gas meter's gas outlet, it is not necessary to enter the customer's home or other indoors, but the ignition test is prohibited from the viewpoint of fire prevention in underground malls and sealed spaces. Sometimes. In addition, when collecting gas, prepare the gas collection container, collect the gas, and bring the gas collection container back home, so the gas collection container will not be damaged or gas leak will not occur during transportation of the gas collection container As described above, the worker is required to have sufficient experience and attention. Furthermore, even when the gas is released into the atmosphere during the purging operation, the worker is required to have sufficient experience and attention so as not to cause a flammable accident or an oxygen deficiency accident.

  An object of the present invention is to provide a gas processing apparatus, a gas processing method, and a program that can contribute to a safe processing of gas discharged from a gas meter in accordance with a purge operation for the gas meter.

  In order to achieve the above object, a gas processing apparatus according to claim 1 is a container having an intake port for taking in a combustible gas and a diffusion port for releasing the gas, wherein the gas meter and the gas meter A container for taking in the gas branched from the main flow path, which is at least one of a gas outlet pipe from which gas is released, from the intake port; and diluting the gas taken into the container from the intake port. Supply means for supplying a non-combustible dilution gas to the container so as to be diffused from the radiation outlet.

  In order to achieve the above object, the gas processing method according to claim 6 is characterized in that a gas meter that has not been purged of residual air has a gas inlet pipe through which combustible gas flows into the gas meter, and the gas is discharged from the gas meter. A main flow path in which the container having an intake port for taking in the gas and a discharge port for releasing the gas when attached to the gas outlet pipe is at least one of the gas meter and the gas outlet pipe The gas diverted from the intake port is taken in from the intake port, and the supply means dilutes the gas taken into the container from the intake port and dissipates it from the discharge port, and is a non-combustible dilution gas Supplying to the container.

  In order to achieve the above object, a program according to claim 10 is a program for causing a computer to function as the execution unit included in the gas processing apparatus according to any one of claims 2 to 4. It is.

  ADVANTAGE OF THE INVENTION According to this invention, it can contribute to the safe process of the gas discharged | emitted from a gas meter with the purge operation | work with respect to a gas meter.

It is a front view which shows an example of a structure of the gas meter to which the gas processing apparatus which concerns on 1st-4th embodiment is applied. It is a side view which shows an example of a structure of the gas meter to which the gas processing apparatus which concerns on 1st-4th embodiment is applied. It is a schematic block diagram which shows an example of a structure of the gas processing apparatus which concerns on 1st Embodiment. It is a block diagram which shows an example of a structure of the electric system of the gas processing apparatus which concerns on 1st Embodiment. It is a flowchart of an example of the flow of the gas processing which concerns on 1st Embodiment. It is a schematic block diagram which shows an example of a structure of the gas processing apparatus which concerns on 2nd Embodiment. It is a block diagram which shows an example of a structure of the electric system of the gas processing apparatus which concerns on 2nd Embodiment. It is a flowchart of an example of the flow of the gas processing which concerns on 2nd Embodiment, Comprising: It is a continuation of the flowchart shown in FIG. It is a schematic block diagram which shows an example of a structure of the gas processing apparatus which concerns on 3rd Embodiment. It is a block diagram which shows an example of a structure of the electric system of the gas treatment apparatus which concerns on 3rd Embodiment. It is a flowchart of an example of the flow of the gas processing which concerns on 3rd Embodiment, Comprising: It is a continuation of the flowchart shown in FIG. It is a schematic block diagram which shows an example of a structure of the gas processing apparatus which concerns on 4th Embodiment. It is a block diagram which shows an example of a structure of the electric system of the gas processing apparatus which concerns on 4th Embodiment. It is a flowchart of an example of the flow of the gas processing which concerns on 4th Embodiment, Comprising: It is a continuation of the flowchart shown in FIG. It is a schematic block diagram which shows an example of a structure of the bag body applied with respect to the gas processing apparatus and gas meter which concern on 1st-4th embodiment. It is a conceptual diagram which shows an example of the aspect by which a gas processing program is installed in the gas processing apparatus from the storage medium in which the gas processing program which concerns on 1st-4th embodiment was memorize | stored.

  DETAILED DESCRIPTION Hereinafter, exemplary embodiments for carrying out the present invention will be described in detail with reference to the drawings. In the following description, combustible gas is simply referred to as “gas” for convenience of description. In the following description, the gas refers to city gas mainly composed of methane, but the present invention is not limited to this, and may be other combustible gas such as LP gas. . In the following description, for convenience of explanation, it is assumed that the gas concentration is expressed as a percentage concentration.

[First Embodiment]
As an example, as shown in FIGS. 1 and 2, the gas meter 10 is used by being attached to a gas inlet pipe 12 and a gas outlet pipe 14. The gas inlet pipe 12 is a pipe through which gas flows into the gas meter 10, and the gas outlet pipe 14 is a pipe through which gas is released from the gas meter 10. The gas outlet pipe 14 is an example of the main flow path according to the present invention.

  The gas inlet pipe 12 and the gas outlet pipe 14 are connected to the gas meter 10 via a union nut 12A and a union nut 14A, respectively. The gas inlet pipe 12 is provided with a meter cock 16, and the gas outlet pipe 14 is provided with cheese 18. The cheese 18 is provided with a diversion opening 18A. The shunt 18A is provided with a lid (not shown). When the gas flows through the gas outlet pipe 14 with the lid removed, the gas is released to the outside of the gas outlet pipe 14 through the shunt 18A. The

  As an example, as shown in FIG. 3, the gas processing apparatus 20 is used by being attached to the gas meter 10 to perform gas processing. The gas treatment refers to treatment of the gas released from the gas outlet pipe 14 through the branch port 18A. The gas processing performed by the gas processing apparatus 20 includes a dilution / dispersion process. The dilution / dispersion treatment refers to a treatment in which the gas is diluted with air so that the concentration of the gas is less than the lower limit of the combustible range, and the gas diluted with air is diffused.

  The gas processing device 20 includes a container 22, a hose 24, a deodorizer 30, a blower 34, and a control device 38.

  The container 22 is a bottomed cylindrical container having thermal conductivity. An opening 22A, which is an example of a diffusion port according to the present invention, is formed on the upper surface of the container 22, and the entire upper surface of the container 22 is opened by the opening 22A.

  The container 22 is formed with an intake port 22B. The intake port 22 </ b> B is an opening for taking in gas, and is arranged in the middle of the opening 22 </ b> A and the bottom surface 22 </ b> C of the container 22 in the height direction of the container 22.

  One end of the hose 24 which is an example of the diversion channel according to the present invention is connected to the diversion port 18A, and the other end of the hose 24 is connected to the intake port 22B. When gas flows into the gas outlet pipe 14 in a state where the branch outlet 18A and the intake port 22B are connected by the hose 24, gas is released from the gas outlet pipe 14 to the hose 24 via the branch outlet 18A. The gas released to is taken into the container 22 through the intake port 22B.

  In the middle of the hose 24, a deodorizer 30 is interposed, and the deodorizer 30 deodorizes the gas by removing sulfur components contained in the gas flowing in the hose 24.

  A blower 34 is provided on the bottom surface 22 </ b> C of the container 22, and the blower 34 sends out air from the bottom surface 22 </ b> C side to the opening 22 </ b> A side in the container 22.

  The control device 38 controls the entire gas processing device 20. As an example, as shown in FIG. 4, the control device 38 includes a main control unit 40. The main control unit 40 includes a CPU (Central Processing Unit) 42, a primary storage unit 44, and a secondary storage unit 46.

  The primary storage unit 44 is a volatile memory used as a work area or the like when executing various programs. An example of the primary storage unit 44 is a RAM (Random Access Memory). The secondary storage unit 46 is a nonvolatile memory in which various programs such as the gas processing program 48 and various parameters are stored in advance. Examples of the secondary storage unit 46 include an EEPROM (Electrically Erasable Programmable Read Only Memory), an SSD (Solid State Drive), or a flash memory.

  The CPU 42, the primary storage unit 44, and the secondary storage unit 46 are connected to each other via the bus line 50. The CPU 42 reads out the gas processing program 48 from the secondary storage unit 46, develops it in the primary storage unit 44, and executes the gas processing program 48 expanded in the primary storage unit 44.

  The control device 38 includes a reception I / F 52, a reception device 54, a display control unit 56, and a display 58. In the first embodiment, “I / F” is an abbreviation for an interface.

  The receiving device 54 receives an instruction from the user. Examples of the receiving device 54 include a keyboard, a mouse, and a touch panel.

  The reception I / F 52 is connected to the bus line 50 and the reception device 54, and outputs an instruction content signal indicating the content of the instruction received by the reception device 54 to the CPU 42 via the bus line 50. The CPU 42 executes processing according to the input instruction content signal.

  The display 58 displays various information. Examples of the display 58 include a liquid crystal display or an organic electroluminescence display.

  The display control unit 56 is connected to the bus line 50 and the display 58, and controls the display 58 according to an instruction from the CPU 42.

  The control device 38 includes an external I / F 60. The external I / F 60 is connected to the bus line 50 and various input / output devices, and controls transmission / reception of various information between the CPU 42 and various input / output devices. In the first embodiment, a blower 34 is employed as an example of various input / output devices. Therefore, the CPU 42 can control the blower 34.

  Next, the operation of the portion of the gas processing apparatus 20 according to the present invention will be described.

  First, the worker closes the meter cock 16 and connects the gas meter 10 that has not been purged of residual air to the gas inlet pipe 12 and the gas outlet pipe 14 using the union nuts 12A and 14A. Next, the worker opens the diversion port 18A, connects one end of the hose 24 to the diversion port 18A via a diversion port side connector (not shown), and connects the other end of the hose 24 to the intake port side connector. It connects to the intake port 22B via (not shown). Thereby, the diversion port 18A and the intake port 22B are connected by the hose 24.

  The operator opens the meter cock 16 in a state where the diversion port 18A and the intake port 22B are connected by the hose 24, and instructs the gas processing device 20 to start executing the gas processing. I do. The gas processing execution start instruction is received by the receiving device 54.

  As described above, when the meter cock 16 is opened in a state where the diversion port 18A and the intake port 22B are connected by the hose 24 and a gas processing execution start instruction is received by the receiving device 54, the CPU 42 reads the gas processing program 48. According to the above, gas processing is performed.

  Next, an example of the flow of gas processing executed by the CPU 42 will be described with reference to FIG.

  In the gas processing shown in FIG. 5, in step 100, the CPU 42 causes the blower 34 to start blowing air into the container 22 with a predetermined air volume, and then proceeds to step 102.

  Here, the predetermined air flow rate refers to, for example, an air flow rate that allows the concentration of a standard amount of gas to be less than the lower limit of the combustible region within a predetermined time (for example, 60 seconds).

  The standard amount is, for example, an average amount of gas taken into the container 22 along with the purging operation, and is taken into the container 22 along with the purging operation based on the result of a test by an actual machine or a computer simulation. It refers to the amount obtained in advance as the average amount of gas. In addition, the predetermined air flow rate is also obtained in advance as the air flow rate that allows the standard gas concentration to fall below the lower limit of the combustible range within a predetermined time based on the results of tests and computer simulations. The amount of air blown. Moreover, the lower limit of the combustible region indicates, for example, 5%.

  In step 102, the CPU 42 determines whether or not an air blowing end condition that is a condition for ending air blowing by the blower 34 is satisfied.

  As an example of the air blow end condition, there is a condition that a predetermined time has elapsed after the execution of the process of step 100 is finished. Here, the “predetermined time” refers to a predetermined time from the end of execution of the process of step 100. As an example of the “predetermined time”, the time when the concentration of the gas diffused from the opening 22A of the container 22 becomes less than the lower limit of the combustible region in advance when the blowing by the blower 34 is continued with the current blowing amount. There is a set time. In addition, the “predetermined time” referred to here is a time determined in advance based on, for example, a result of a test by an actual machine or a computer simulation.

  If the air blow end condition is satisfied in step 102, the determination is affirmed and the routine proceeds to step 104. If it is determined in step 102 that the air blow end condition is not satisfied, the determination is negative and the routine proceeds to step 106.

  In step 104, the CPU 42 ends the blowing to the blower 34, and then proceeds to step 106.

  In step 106, the CPU 42 causes the display 58 to start displaying dilution completion information indicating that the dilution / dispersion process has been completed, and then proceeds to step 108. By displaying the dilution completion information on the display 58, the operator is notified that the dilution / dispersion process has been completed. In this step 106, purge completion information indicating that the purge of residual air in the gas meter 10 has been completed may be displayed in a display area different from the dilution completion information display area on the same screen.

  In step 108, the CPU 42 determines whether or not a display end condition that is a condition for ending the display of the dilution completion information is satisfied. An example of the display end condition is a condition that an instruction to end the display of dilution completion information is received with respect to the receiving device 54. As another example of the display end condition, there is a condition that a predetermined time (for example, 15 seconds) has passed as the time to end the display after the execution of the process of step 106 is ended.

  If the display end condition is not satisfied in step 108, the determination in step 108 is performed again. If the display end condition is satisfied in step 108, the process proceeds to step 110.

  In step 110, the CPU 42 ends the display of the dilution completion information on the display 58, and then ends the gas process.

  As described above, in the gas treatment device 20, the blower 34 blows air so that the gas taken into the container 22 is diluted and diffused from the opening 22A. Therefore, according to the gas processing apparatus 20, it can contribute to the safe process of the gas discharged | emitted from the gas meter 10 with a purge operation | work.

  Moreover, in the gas processing apparatus 20, gas is diluted with air because the air blower 34 blows. Therefore, according to the gas processing apparatus 20, compared with the case where the gas is diluted without using the blower 34 and without using air, the gas taken into the container 22 can be diluted with a simple configuration. .

[Second Embodiment]
In the first embodiment, the case where the dilution / dissipation process is completed without detecting the gas concentration has been described. However, in the second embodiment, the dilution / dissipation process or the like is executed according to the result of detecting the gas. A description will be given of the case. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As an example, as shown in FIG. 6, the gas processing apparatus 200 according to the second embodiment has an upstream concentration sensor 32 and a downstream concentration sensor 36 as compared with the gas processing apparatus 20 according to the first embodiment. Is different. Further, the gas processing apparatus 200 is different from the gas processing apparatus 20 in that a control device 202 is provided instead of the control device 38.

  In the middle of the hose 24, an upstream concentration sensor 32 is interposed. The upstream concentration sensor 32 is disposed upstream of the deodorizer 30 in the gas flow path in the hose 24 and detects the concentration of the gas flowing in the hose 24.

  The container 22 is provided with a downstream concentration sensor 36 which is an example of the detection means according to the present invention. The downstream concentration sensor 36 is disposed in the container 22 between the intake port 22B and the opening 22A, and detects the gas concentration.

  As an example, as illustrated in FIG. 7, the control device 202 is different from the control device 38 in that it includes a main control unit 204 instead of the main control unit 40.

  The main control unit 204 is different from the main control unit 40 in that the secondary storage unit 46 stores a gas processing program 206 instead of the gas processing program 48. The CPU 42 operates as an execution unit according to the present invention by reading the gas processing program 206 from the secondary storage unit 46, expanding it in the primary storage unit 44, and executing the gas processing program 206 expanded in the primary storage unit 44.

  As an example, as shown in FIG. 7, the gas processing apparatus 200 is different from the gas processing apparatus 20 in that an upstream concentration sensor 32 and a downstream concentration sensor 36 are connected to the external I / F 60. Therefore, the CPU 42 can respectively acquire the upstream gas concentration that is the concentration detected by the upstream concentration sensor 32 and the downstream gas concentration that is the concentration detected by the downstream concentration sensor 36. .

  Next, with respect to the operation of the portion of the gas processing apparatus 200 according to the present invention, a portion different from the first embodiment will be described.

  When the meter cock 16 is opened in a state where the diversion port 18A and the intake port 22B are connected by the hose 24 and a gas processing execution start instruction is received by the receiving device 54, the CPU 42 performs the main processing according to the gas processing program 206. The gas processing which concerns on 2 embodiment is performed.

  Next, an example of the flow of gas processing according to the second embodiment executed by the CPU 42 will be described with reference to FIG.

  In the gas processing shown in FIG. 8, in step 250, the blower 34 is started to blow air into the container 22 with a predetermined air flow, and then the process proceeds to step 252.

  In step 252, the CPU 42 acquires the upstream gas concentration from the upstream concentration sensor 32, and then proceeds to step 254.

  In step 254, the CPU 42 determines whether or not the upstream gas concentration acquired in step 252 is equal to or higher than the first predetermined concentration. The first predetermined concentration refers to 99%, for example. In step 254, if the upstream gas concentration acquired in step 252 is less than the first predetermined concentration, the determination is negative and the routine proceeds to step 260. In step 254, if the upstream gas concentration acquired in step 252 is equal to or higher than the first predetermined concentration, the determination is affirmed and the routine proceeds to step 256.

  In step 256, the CPU 42 adds 1 to the count value of a first counter (not shown), and then proceeds to step 258. In the first embodiment, “0” is adopted as an example of the initial value of the count value of the first counter. However, the present invention is not limited to this, and values other than “0” may be adopted.

  In step 258, the CPU 42 determines whether or not the count value of the first counter has reached a first predetermined value (for example, 30). If the count value of the first counter has not reached the first predetermined value in step 258, the determination is negative and the routine proceeds to step 252. If the count value of the first counter reaches the first predetermined value in step 258, the determination is affirmed and the routine proceeds to step 266.

  In step 260, the CPU 42 resets the count value of the first counter to “0”, and then proceeds to step 262.

  In step 262, the CPU 42 determines whether or not an end condition that is a condition for ending this gas process is satisfied. An example of the end condition is a condition that a gas process execution end instruction, which is an instruction to end the execution of the gas process, is received by the receiving device 54.

  If the termination condition is not satisfied at step 262, the determination is negative and the routine proceeds to step 252. If the end condition is satisfied in step 262, the determination is affirmed and the routine proceeds to step 264.

  In step 264, the CPU 42 ends the blowing to the blower 34 and then ends the gas process.

  In step 266, the CPU 42 causes the display 58 to start displaying purge completion information indicating that the residual air purge of the gas meter 10 has been completed, and then proceeds to step 268. By displaying the purge completion information on the display 58, the operator is notified that the purge of the residual air in the gas meter 10 has been completed.

  In step 268, the CPU 42 acquires the downstream gas concentration from the downstream concentration sensor 36, and then proceeds to step 270.

  In step 270, the CPU 42 determines whether or not the downstream gas concentration acquired in step 126 is less than a second predetermined concentration. The second predetermined concentration refers to, for example, the lower limit of the combustible region of the gas concentration.

  In step 270, if the downstream gas concentration acquired in step 268 is less than the second predetermined concentration, the determination is affirmed and the routine proceeds to step 272. In step 270, if the downstream gas concentration acquired in step 268 is equal to or higher than the second predetermined concentration, the determination is negative and the routine proceeds to step 276.

  In step 272, the CPU 42 adds 1 to the count value of a second counter (not shown), and then proceeds to step 274. In the first embodiment, “0” is adopted as an example of the initial value of the count value of the second counter. However, the present invention is not limited to this, and a value other than “0” may be adopted.

  In step 274, the CPU 42 determines whether or not the count value of the second counter has reached a second predetermined value (for example, 30). In step 274, if the count value of the second counter has not reached the second predetermined value, the determination is negative and the routine proceeds to step 268. In step 274, if the count value of the second counter has reached the second predetermined value, the determination is affirmed and the routine proceeds to step 282.

  In step 282, the CPU 42 causes the display 58 to start displaying dilution completion information indicating that the dilution / dispersion process has been completed, and then proceeds to step 284. By displaying the dilution completion information on the display 58, the operator is notified that the dilution / dispersion process has been completed. In addition, the process of this step 282 is an example of the alerting | reporting process which concerns on this invention.

  In the second embodiment, by performing the process of step 282, the gas processing completion information is displayed in a display area different from the display area of the purge completion information within the same screen while the display state of the purge completion information is maintained. However, the present invention is not limited to this. For example, the CPU 42 may end the display of the purge completion information on the display 58 and start displaying the gas processing completion information.

  In step 284, the CPU 42 ends the blowing to the blower 34, and then proceeds to step 288.

  In step 276, the CPU 42 resets the count value of the second counter to “0”, and then proceeds to step 278.

  In step 278, the CPU 42 determines whether or not an end condition is satisfied. If it is determined in step 278 that the termination condition is not satisfied, the determination is negative and the process proceeds to step 286. If the end condition is satisfied in step 278, the determination is affirmed and the routine proceeds to step 280.

  In step 280, the CPU 42 ends the blowing to the blower 34, and then proceeds to step 290.

  In step 286, the CPU 42 controls the blower 34 so that the blower amount of the blower 34 is adjusted to the blower amount determined according to the latest downstream gas concentration acquired in step 268, and then proceeds to step 268. To do. Note that the processing in step 286 is an example of supply processing according to the present invention.

  Here, the blast volume determined according to the latest downstream gas concentration acquired in step 268 is a blast volume that is larger than the current blast volume, and is derived from the blast volume derivation table or the blast volume derivation formula. The amount of air blown. The blast amount derivation table refers to a table in which the downstream gas concentration and the blast amount are associated in advance, and the blast amount derivation calculation formula is an operation with the downstream gas concentration as an independent variable and the blast amount as a dependent variable. Refers to an expression.

  In step 288, the CPU 42 determines whether or not a display end condition that is a condition for ending the display of the purge completion information and the gas processing completion information is satisfied. An example of the display end condition is a condition that an instruction to end the display of the purge completion information and the gas processing completion information is received with respect to the reception device 54. As another example of the display end condition, there is a condition that a predetermined time (for example, 15 seconds) has passed as the time to end the display after the execution of the process of step 284 is completed.

  In step 288, if the display end condition is not satisfied, the determination in step 288 is performed again. If the display end condition is satisfied in step 288, the process proceeds to step 290.

  In step 290, the CPU 42 ends the display of the information currently displayed on the display 58 among the purge completion information and the gas processing completion information on the display 58, and then ends the gas processing.

  As described above, in the gas processing apparatus 200, processing according to the downstream gas concentration (for example, processing in steps 282 and 286) is performed. Therefore, according to the gas processing apparatus 200, compared with the case where the process related to the dilution / dispersion process is executed without using the downstream side gas concentration, the labor required for the process related to the dilution / dispersion process can be reduced.

  Moreover, in the gas processing apparatus 200, the air with respect to the inside of the container 22 is performed with the air flow rate determined according to the downstream gas concentration. Therefore, according to the gas processing apparatus 200, the occurrence of a situation in which the amount of air blown by the blower 34 is excessive or insufficient as compared with the case where the air is always blown into the container 22 with the maximum air blowing amount from the start of execution of the gas processing. Can be suppressed.

  Further, in the gas processing apparatus 200, the gas processing completion information is displayed on the display 58 according to the downstream gas concentration, thereby notifying the worker or the like that the gas processing has been completed. Therefore, according to the gas processing apparatus 200, it is possible to accurately notify the worker or the like that the gas processing has been completed, compared to the case where the gas processing completion information is displayed on the display 58 regardless of the downstream gas concentration. it can.

[Third Embodiment]
In the second embodiment, the case where the upstream concentration sensor 32 and the downstream concentration sensor 36 are used together has been described, but in the third embodiment, gas processing is performed without using the upstream concentration sensor 32. Will be described. In the third embodiment, the same components as those in the first and second embodiments are denoted by the same reference numerals, and the description thereof is omitted.

  As an example, as shown in FIG. 9, the gas processing apparatus 300 according to the third embodiment is different from the gas processing apparatus 200 according to the second embodiment in that the upstream concentration sensor 32 is not provided. Further, the gas processing apparatus 300 is different from the gas processing apparatus 200 in that a control device 302 is provided instead of the control device 202.

  As an example, as illustrated in FIG. 10, the control device 302 is different from the control device 202 in that it includes a main control unit 304 instead of the main control unit 204.

  The main control unit 304 is different from the main control unit 204 in that the secondary storage unit 46 stores a gas processing program 306 instead of the gas processing program 206.

  Next, with respect to the operation of the portion of the gas processing apparatus 300 according to the present invention, a portion different from the second embodiment will be described.

  When the meter cock 16 is opened in a state where the diversion port 18A and the intake port 22B are connected by the hose 24 and a gas processing execution start instruction is received by the receiving device 54, the CPU 42 performs the main processing according to the gas processing program 306. The gas treatment according to the third embodiment is executed.

  Next, an example of the flow of gas processing according to the third embodiment executed by the CPU 42 will be described with reference to FIG. In the description of the gas processing according to the third embodiment, the same processes as those included in the gas processing according to the second embodiment are denoted by the same step numbers as those of the gas processing according to the second embodiment. The description is omitted.

  As an example, as shown in FIG. 11, the gas process according to the third embodiment does not have the processes of steps 252 to 266 as compared with the gas process according to the second embodiment, and a step instead of the step 282 is performed. The difference is that it has 350.

  In step 350, the CPU 42 starts displaying the gas processing completion information, and then proceeds to step 284. By displaying the gas processing completion information on the display 58, the operator is notified that the gas processing is completed. In step 282, the gas processing completion information is displayed in a display area different from the purge completion information display area in the same screen as the purge completion information while the purge completion information display state is maintained. In step 350, purge completion information is not displayed.

  Therefore, the worker needs to grasp the completion of the purge by using another method. The other method is, for example, that an operator sets a timer (not shown) or the like that a predetermined time has elapsed since the meter cock 16 is opened and the remaining air of the gas meter 10 is purged. There is a method of grasping the completion of purge by visually checking the measurement time. In addition to this, for example, there is a method of grasping the completion of the purge by confirming that the integrated value of the flow rate displayed on the gas meter 10 is equal to or more than a predetermined integrated value. . In addition to this, there is a method of grasping the completion of the purge by confirming the display of the gas processing completion information.

  As described above, in the gas processing apparatus 300, the gas processing is performed by the CPU 42 without using the upstream concentration sensor 32. Therefore, according to the gas processing apparatus 300, compared with the case where the upstream concentration sensor 32 is used, the number of parts can be reduced. Moreover, according to the gas processing apparatus 300, compared with the case where the process based on the upstream gas concentration is performed, the time from the start to the end of the execution of the gas process can be shortened.

[Fourth Embodiment]
In the second embodiment, the case where the upstream concentration sensor 32 and the downstream concentration sensor 36 are used together has been described. However, in the fourth embodiment, gas processing is performed without using the downstream concentration sensor 36. Will be described. In the fourth embodiment, the same components as those in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As an example, as shown in FIG. 12, the gas processing apparatus 400 according to the fourth embodiment is different from the gas processing apparatus 200 according to the second embodiment in that the downstream concentration sensor 36 is not provided. The gas processing apparatus 400 is different from the gas processing apparatus 200 in that a control apparatus 402 is provided instead of the control apparatus 38.

  As an example, as illustrated in FIG. 13, the control device 402 is different from the control device 202 in that it includes a main control unit 404 instead of the main control unit 204.

  The main control unit 404 differs from the main control unit 204 in that the secondary storage unit 46 stores a gas processing program 406 instead of the gas processing program 206.

  Next, with respect to the operation of the part of the gas processing apparatus 400 according to the present invention, a part different from the second embodiment will be described.

  When the meter cock 16 is opened in a state where the diversion port 18A and the intake port 22B are connected by the hose 24 and a gas processing execution start instruction is received by the receiving device 54, the CPU 42 performs the main processing according to the gas processing program 306. The gas process which concerns on 4 embodiment is performed.

  Next, an example of the flow of gas processing according to the fourth embodiment executed by the CPU 42 will be described with reference to FIG. In the description of the gas process according to the fourth embodiment, the same processes as those included in the gas process according to the second embodiment are denoted by the same step numbers as those of the gas process according to the second embodiment. The description is omitted.

  As an example, as shown in FIG. 14, the gas process according to the fourth embodiment has step 450 compared to the gas process according to the second embodiment, and has step 452 instead of steps 268 to 274. The difference is that it does not have steps 276 and 286.

  As an example, as shown in FIG. 12, if the determination is negative in step 262, the process proceeds to step 450.

  In step 450, the CPU 42 controls the blower 34 so that the blower amount of the blower 34 is adjusted to the blower amount determined according to the latest upstream gas concentration acquired in step 252, and then proceeds to step 252. To do.

  Here, the blast volume determined according to the latest upstream gas concentration acquired in step 252 is a blast volume larger than the current blast volume, and the blast volume derivation table or the blast volume according to the fourth embodiment. This is the air blowing amount derived by the derivation formula. In the fourth embodiment, the blast amount derivation table refers to a table in which the upstream gas concentration and the blast amount are associated in advance, and the blast amount derivation arithmetic expression uses the upstream gas concentration as an independent variable, An arithmetic expression with the air volume as a dependent variable.

  In step 452, the CPU 42 determines whether or not a predetermined time has elapsed since the execution of the process in step 266 has ended. Here, the predetermined time is, for example, a time determined in advance as a time when the downstream gas concentration becomes less than the second predetermined concentration described above when the blowing by the blower 34 is continued with the current blowing amount. Point to. The predetermined time is a time determined in advance based on the result of a test by an actual machine or a computer simulation.

  If it is determined in step 452 that the predetermined time has elapsed since the execution of the process in step 266 has ended, the determination is affirmed and the process proceeds to step 282. If it is determined in step 452 that the predetermined time has not elapsed since the execution of the process in step 266 has ended, the determination is negative and the process proceeds to step 278.

  As described above, in the gas processing apparatus 400, when the upstream gas concentration does not reach the first predetermined concentration, the air flow into the container 22 is performed with the air flow determined according to the current upstream gas concentration. Is called. Therefore, according to the gas processing apparatus 400, compared with the case where the inside of the container 22 is always blown with the maximum blown amount although the upstream gas concentration does not reach the first predetermined concentration, the power consumption required for blowing is reduced. Can be suppressed.

  In the gas processing apparatus 400, the gas processing completion information is displayed on the display 58 on the condition that a predetermined time has elapsed since the display of the purge completion information was started. Therefore, according to the gas processing apparatus 300, compared with the case where the gas processing completion information is displayed on the display 58 simultaneously with the display of the purge completion information, it is possible to accurately notify the worker or the like that the gas processing has been completed. .

  In each of the above embodiments, the case where gas is directly fed from the gas outlet pipe 14 into the container 22 using the hose 24 has been described. However, the present invention is not limited to this and is shown in FIG. 15 as an example. As described above, the worker may once put the gas into the bag body 500 and then send the gas in the bag body 500 into the container 22.

  As an example, as shown in FIG. 15, the bag body 500 has an opening 500A. One end of the hose 24 is connected to the flow outlet 18A and the other end of the hose 24 is connected to the opening 500A. In addition, the capacity | capacitance of the bag body 500 is a capacity | capacitance corresponded to a volume about 3 to 4 times the maximum volume of the residual air which can be assumed as the volume of the residual air in the gas meter 10, for example.

  When realizing the gas treatment described in the above embodiments using the bag body 500, first, the worker connects the flow outlet 18 </ b> A and the opening 500 </ b> A with the hose 24. Next, the worker opens the meter cock 16 in a state where the diversion port 18A and the opening 500A are connected. As a result, residual air and gas are discharged from the gas outlet pipe 14 to the hose 24 through the diversion port 18A, and the residual air and gas discharged to the hose 24 are taken into the bag body 500 through the opening 500A.

  When the worker completes the purge operation, the operator closes the opening 500A of the bag body 500 with a lid (not shown) and seals the gas stored in the bag body 500 in the bag body 500. Next, the worker removes the lid from the opening 500A and connects the opening 500A directly or via a hose (not shown) to the intake port 22B of the container 22. Then, the worker gives a gas processing execution start instruction that is an instruction to start execution of the gas processing to the gas processing apparatus 20 (200, 300, 400), and presses the bag body 500 to press the bag body 500. Gas is fed into the container 22. As a result, the gas processing described in each of the above embodiments is executed, so that the same effect as the gas processing described in each of the above embodiments can be obtained.

  Further, in each of the above embodiments, when performing the purge operation, the gas discharged from the diversion port 18A due to the purge to the gas meter 10 is the gas processing device 20, 200, 300, 400 (hereinafter, it is necessary to distinguish between them). In the case where there is no signal, it is referred to as a “gas treatment device” without a reference numeral). However, the present invention is not limited to this. For example, when the gas meter 10 is provided with a gas test port, the gas discharged from the gas test port when the gas meter 10 is purged may be taken into the gas processing apparatus. Further, the gas processing apparatus may be configured such that the gas released from both the gas test port and the diversion port 18A in accordance with the purge with respect to the gas meter 10 is taken into the gas processing apparatus.

  In each of the above embodiments, the visible display by the display is shown as an example of the display of the purge completion information and the dilution completion information, but the present invention is not limited to this. For example, it may be a permanent visual display in which at least one of purge completion information and dilution completion information is printed on a sheet by a printer and output. Further, an audible display in which at least one of purge completion information and dilution processing completion information is output by sound by the sound reproducing device may be used. A plurality of visible display, permanent visible display, and audible display may be combined. In addition to these displays, at least one of purge completion information and dilution completion information is transmitted by the gas processing apparatus to a communication device such as a smart device or a computer that can communicate with the gas processing apparatus. Also good. In addition, the vibration function mounted on the smart device or the like may be activated so that the completion of the purge or the completion of the gas processing is notified to an operator, an administrator, or the like.

  In each of the above embodiments, air is shown as an example of a non-combustible dilution gas for diluting the gas concentration, and the case where air is blown into the container 22 has been described, but the present invention is limited to this. It is not something. For example, a non-combustible dilution gas such as nitrogen may be supplied into the container 22 instead of air.

  In each of the above embodiments, the case where the gas processing programs 48, 206, 306, and 406 (hereinafter referred to as “gas processing programs” without reference numerals) are read from the secondary storage unit 46 is illustrated. It is not necessary to store in the secondary storage unit 46 from the beginning. For example, as shown in FIG. 16, a gas processing program may be first stored in an arbitrary portable storage medium 600 such as an SSD, a USB memory, or a CD-ROM. In this case, the gas processing program of the storage medium 600 is installed in the gas processing apparatus, and the installed gas processing program is executed by the CPU 42.

  In addition, a gas processing program is stored in a storage unit such as another computer or server device connected to the gas processing device via a communication network (not shown), and the gas processing program responds to a request from the gas processing device. It may be downloaded. In this case, the downloaded gas processing program is executed by the CPU 42.

  In addition, the gas treatment described in the above embodiments is merely an example. Therefore, it goes without saying that unnecessary steps may be deleted, new steps may be added, and the processing order may be changed within a range not departing from the spirit.

  In each of the above embodiments, the execution unit according to the present invention is realized by a software configuration using a computer, but the present invention is not limited to this. For example, instead of a software configuration using a computer, the execution unit according to the present invention may be realized only by a hardware configuration such as a field-programmable gate array (FPGA) or an application specific integrated circuit (ASIC). The execution unit according to the present invention may be realized by a combination of a software configuration and a hardware configuration.

  All documents, patent applications and technical standards mentioned in this specification are to the same extent as if each individual document, patent application and technical standard were specifically and individually stated to be incorporated by reference. Incorporated by reference in the book.

DESCRIPTION OF SYMBOLS 10 Gas meter 14 Gas outlet pipe 20,200,300,400 Gas processing apparatus 22A Opening 22B Inlet 24 Hose 30 Deodorizer 32 Upstream concentration sensor 34 Blower 36 Downstream concentration sensor 42 CPU
48, 206, 306, 406 Gas processing program 58 Display

Claims (10)

A container having an intake port for taking in flammable gas and a diffusion port for diffusing the gas, and from a main flow path that is at least one of a gas meter and a gas outlet pipe from which the gas is discharged. A container for taking in the branched gas from the intake port;
A supply means for supplying a non-flammable dilution gas to the container so as to dilute the gas taken into the container from the intake and dissipate from the discharge opening;
Including gas processing equipment.   The gas processing apparatus according to claim 1, further comprising an execution unit that executes processing according to a detection result by a detection unit that detects the concentration of the gas diffused from the diffusion port.   The process according to claim 2, wherein the process includes a supply process in which the dilution gas is supplied to the container at a supply amount determined according to the concentration detected by the detection unit. Gas processing equipment.   The process is a process including an informing process for informing that the dilution of the gas diverted from the main flow path is completed when the concentration detected by the detecting means is a concentration less than a lower limit of a combustible region. The gas treatment device according to claim 2 or claim 3. The dilution gas is air;
The gas processing apparatus according to claim 1, wherein the supply unit is a blower. Taking in the gas when a gas meter that has not been purged of residual air is attached to a gas inlet pipe that allows a flammable gas to flow into the gas meter and a gas outlet pipe that releases the gas from the gas meter. A container having a mouth and a diffusion port for diffusing the gas takes in the gas branched from the main flow channel which is at least one of the gas meter and the gas outlet pipe from the intake port;
A gas processing method, comprising: supplying a non-combustible dilution gas to the container so that the supply means dilutes the gas taken into the container from the intake and diffuses the gas from the discharge outlet.   The gas processing method according to claim 6, wherein the gas is deodorized by a deodorizer interposed in the gas distribution channel from the main channel to the intake port. The bag body having an opening takes in the gas branched from the main flow path from the opening,
In the container, the gas taken into the bag through the opening is pressed from the opening while the bag is pressed in a state where the opening and the inlet are connected. The gas processing method of Claim 6 taken in via. The dilution gas is air;
The gas processing method according to claim 6, wherein the supply unit is a blower. Computer
The program for functioning as the said execution part contained in the gas processing apparatus of any one of Claims 2-4.