JP4778923B2 - Mixed gas production equipment - Google Patents

Description

  The present invention relates to a mixed gas production apparatus. More specifically, the present invention relates to a mixed gas production apparatus that can be operated without a power source such as a motor or a compressor.

  The mixed gas production apparatus of the present invention can supply gas in a cylinder such as a nitrogen gas cylinder, a hydrogen gas cylinder, an acetylene gas cylinder, and an oxygen gas cylinder without a special driving device such as a motor or a compressor that requires a power source or a battery. Since it can be operated using the pressure it has, not only can the energy cost be reduced, but there is no risk of ignition due to gas leakage, such as when using a motor or compressor, etc. It can be used safely when flammable gas is used as the gas to be fired or when multiple gases are mixed in an atmosphere that may ignite, and the device itself can be made compact. Because of its excellent performance, it is suitable for use in various situations that require mixing of multiple types of gases. It can be.

  When using by mixing a plurality of types of gases, the mixing ratio of each gas is generally adjusted by controlling the volume flow rate of each gas with a valve. However, since it is very difficult to finely adjust the volume flow rate of the gas by the valve, it is difficult not only to produce a mixed gas having a predetermined mixing ratio, but also so-called play provided in the valve. Depending on the case, the gas mixing ratio may vary.

  Moreover, when mixing multiple types of gas, the apparatus which normally mixes after pressing each gas with a compressor is used. However, since this apparatus requires electrical equipment for operating the compressor, it has a drawback that it cannot be used in a place without electrical equipment. Further, in this device, gas may leak from the compressor during operation, and if the leaked gas is flammable, there is a risk of ignition or explosion due to sparks generated during operation of the compressor. For this reason, when using the gas which has flammability thru | or explosive property, or when using an apparatus in the atmosphere which has flammability thru | or explosive property, the system for explosion prevention is needed.

  Therefore, as a mixed gas supply system for producing a mixed gas in which the accuracy of the gas mixture ratio is ensured, a first flow rate regulator that adjusts the introduction amount of the main raw material gas to the mixer, and a secondary raw material gas mixer The system has a second flow rate regulator and pressure control mechanism that adjusts the amount introduced into the system to a predetermined amount, and the system is operated under the condition that the flow velocity of the gas in the flow rate regulator is sonic, subsonic or sonic. A mixed gas system has been proposed (see, for example, Patent Document 1).

  However, in this mixed gas system, the first flow rate regulator and the second flow rate regulator are used in place of the conventional valves. However, these flow rate regulators have a cross-sectional area that is gradually reduced in the flow direction. Since it is composed of a nozzle having a head-conical inlet and a cylindrical portion, when changing the flow rate, it requires a very complicated operation in which the nozzle itself must be replaced, and fine adjustment of the gas flow rate Is difficult to do.

  Furthermore, this mixed gas system has a drawback that not only a driving device for operating the system under the condition that the gas flow velocity is equal to or lower than the sonic velocity, the subsonic velocity or the sonic velocity is required, but the device itself becomes large. .

JP-A-10-128102

  The present invention has been made in view of the above-described prior art, and does not require a special driving device such as a motor or a compressor that requires a power source or a battery or an explosion-proof facility, and the device itself is lightweight. It is an object of the present invention to provide a mixed gas production apparatus that can be miniaturized and can produce a mixed gas safely and easily.

The present invention
(1) It has a drive device driven by the pressure of the supplied pressurized gas and a driven device that operates when the drive device is driven, and the piston of the drive device and the driven device so that the drive device and the driven device are linked. The piston of the device is connected,
When the piston reaches or near the top dead center of the drive unit, the pressurized gas from the gas introduction pipe is introduced into the top dead center side gas outlet of the drive unit and the gas in the cylinder of the drive unit is bottom dead center. When the piston reaches the bottom dead center of the drive device or in the vicinity thereof, the pressurized gas from the gas introduction pipe is introduced into the bottom dead center side gas lead-in inlet of the drive device. A switching device for introducing gas into or out of the cylinder of the driven device in conjunction with the driving of the driving device, having a switching valve for deriving the gas in the cylinder from the top dead center side gas outlet inlet An apparatus for producing a mixed gas, which is connected to a driven device,

(2) The drive device is sealed at both ends of the cylinder into which the piston is inserted, and a top dead center side gas outlet and inlet for introducing gas into the vicinity of the top dead center and the bottom dead center of the cylinder, and The mixed gas producing apparatus according to (1), wherein a bottom dead center side gas lead-out inlet is disposed and driven by the pressure of the pressurized gas introduced into the cylinder,

(3) The driven device is sealed at both ends of the cylinder into which the piston has been inserted, and has a top dead center side gas outlet and inlet for introducing gas into the vicinity of the top dead center and the bottom dead center of the cylinder, and The mixed gas production apparatus according to (1) or (2), wherein a bottom dead center side gas lead-out inlet is disposed and the driven apparatus is driven by being driven.

(4) The switching valve is connected to a gas introduction pipe for supplying pressurized gas, a top dead center side gas introduction port of the drive device, and a bottom dead center side gas introduction port of the drive device ( 1) to (3) a mixed gas production apparatus according to any one of

(5) The mixed gas production apparatus according to any one of (1) to (4), further including a gas mixing unit for mixing the gas derived from the driving device and the gas derived from the driven device,

(6) The mixed gas production apparatus according to (5), wherein the gas mixing unit is connected to the switching valve via a gas conveyance pipe for conveying the gas,

(7) The switching device is disposed between the top dead center side gas outlet and the gas mixing unit of the driven device and between the bottom dead center side gas outlet and the gas mixing unit of the driven device. (5) or (6) mixed gas production apparatus,

(8) Both ends of the cylinder in which the piston is inserted are sealed, and a top dead center side gas outlet inlet and a bottom dead center side for introducing gas into the vicinity of the top dead center and the bottom dead center of the cylinder, respectively. A gas drive inlet is installed and the drive device driven by the pressure of pressurized gas introduced into the cylinder is sealed at both ends of the cylinder into which the piston is inserted, near the top dead center of the cylinder and at the bottom dead center. A top dead center side gas outlet inlet and a bottom dead center side gas outlet inlet for introducing and introducing gas in the vicinity of each are arranged, a driven device that is operated by driving the drive device, and is derived from the drive device A gas mixing unit for mixing the gas and the gas derived from the driven device;
The piston of the driving device and the piston of the driven device are connected so that the driving device and the driven device are interlocked,
When the piston reaches or near the top dead center of the drive unit, the pressurized gas from the gas introduction pipe is introduced into the top dead center side gas outlet of the drive unit and the gas in the cylinder of the drive unit is bottom dead center. When the piston reaches the bottom dead center or in the vicinity of the bottom dead center of the drive device, the pressurized gas from the gas introduction pipe is introduced into the bottom dead center side gas lead-in inlet of the drive device. In addition, a switching valve for conveying the gas in the cylinder of the driving device from the top dead center side gas outlet to the gas mixing section includes a gas introduction pipe for supplying pressurized gas, and a top dead center side gas of the driving device. Connected to the inlet, the bottom dead center side gas inlet of the driving device, and the gas transport pipe for transporting the gas to the gas mixing section,
The gas is introduced into the cylinder of the driven device in conjunction with the drive of the drive device, but when the gas is led out from the cylinder of the driven device, a switching device for transporting the gas to the gas mixing unit is a top dead center of the driven device. The mixed gas according to any one of (5) to (7), which is disposed between the side gas outlet and the gas mixing unit and between the bottom dead center side gas outlet and the gas mixing unit of the driven device. Manufacturing equipment,

(9) The mixed gas production apparatus according to any one of (1) to (8), wherein a regulator for adjusting the pressure of the supplied pressurized gas is disposed in the gas introduction pipe.

(10) The mixed gas production apparatus according to any one of (1) to (9), wherein a gas introduction pipe is disposed in the switching device, and a buffer tank is connected to the gas introduction pipe, and

(11) A limiter operating portion is disposed on the piston of the driving device or the piston of the driven device,
The drive device side limiter is arranged so that the piston moves to the drive device side and operates in contact with the limiter operating portion at a predetermined position.
The piston moves to the driven device side, and the driven device side limiter is arranged to operate in contact with the limiter operating portion at a predetermined position,
When the driven device limiter is activated, the drive device and the driven device side limiter are connected via a pipe so that the gas at the top dead center in the cylinder of the driven device is conducted through the driven device side limiter. The driven device side limiter and the switching valve are connected so that the switching valve is operated by the pressure of the gas derived from the side limiter, and the gas derived from the bottom dead center side gas outlet inlet of the driving device via the switching valve The switching valve and the gas mixing unit are connected via a pipe for conducting to the gas mixing unit,
The drive device and the drive device limiter are connected via a pipe so that the gas at the bottom dead center in the cylinder of the drive device is conducted through the drive device limiter when the drive device limiter is operated, and the drive device The driving device side limiter and the switching valve are connected so that the switching valve is operated by the pressure of the gas derived from the side limiter, and the gas is derived from the top dead center side gas outlet inlet of the driving device via the switching valve. The switching valve and the gas mixing unit are connected to each other through a pipe for connecting the gas to the gas mixing unit.

  According to the mixed gas manufacturing apparatus of the present invention, it can be operated by introducing a pressurized gas, and the operation can be stopped by stopping the introduction of the pressurized gas. This eliminates the need for special drive devices such as motors and compressors and explosion-proof equipment, and makes it possible to reduce the size of the device itself and make it safe and easy to produce gas mixtures. it can.

  The mixed gas manufacturing apparatus of the present invention includes a drive device that is driven by the pressure of the supplied pressurized gas, and a driven device that is operated when the drive device is driven.

  In the mixed gas production apparatus of the present invention, the piston of the driving device and the piston of the driven device are connected so that the driving device and the driven device are interlocked.

  According to the mixed gas manufacturing apparatus of the present invention, when the piston reaches or near the top dead center of the driving device, the pressurized gas from the gas introduction pipe is transferred from the top dead center side gas outlet inlet to the cylinder of the driving device. The gas at the bottom dead center side in the cylinder of the driving device is led out from the bottom dead center side gas outlet. At this time, in the driven device, the gas at the top dead center side in the cylinder of the driven device is led out from the top dead center side gas lead-in inlet, and gas enters the cylinder of the driven device from the bottom dead center side lead-out inlet of the driven device. be introduced.

  On the other hand, when the piston reaches or near the bottom dead center of the drive unit, the pressurized gas from the gas introduction pipe is introduced into the cylinder of the drive unit from the bottom dead side gas outlet inlet, The top dead center side gas is led out from the top dead center side gas outlet. At this time, in the driven device, the gas at the bottom dead center side in the cylinder of the driven device is led out from the bottom dead center side gas lead-in inlet, and the gas flows into the cylinder of the driven device from the top dead center side lead-out inlet of the driven device. be introduced.

  In order to operate these mechanisms, a switching valve is provided in the mixed gas manufacturing apparatus of the present invention.

  In the mixed gas production apparatus of the present invention, a switching device for introducing gas into or leading out from the cylinder of the driven device in conjunction with driving of the driving device is connected to the driven device.

  The mixed gas production apparatus of the present invention has the above-described configuration and is operated by the pressure of the pressurized gas. Therefore, a special driving device such as a motor or a compressor that requires a power source or a battery, or an explosion-proof device is used. Equipment is not required, the apparatus itself can be reduced in weight and size, and the mixed gas can be produced safely and easily.

  The driving apparatus used in the mixed gas manufacturing apparatus of the present invention operates the manufacturing apparatus in a quiet state without generating noise as in the case of using a driving apparatus such as a motor or a compressor that requires a power source or a battery. From the standpoint, the both ends of the cylinder into which the piston is inserted are sealed, and the top dead center side gas outlet inlet and the bottom dead center for introducing gas into the vicinity of the top dead center and the bottom dead center of the cylinder, respectively. It is preferable that the driving device is provided with a side gas outlet and is driven by the pressure of the pressurized gas introduced into the cylinder.

  Further, since the driven device used in the mixed gas production apparatus of the present invention operates in conjunction with the drive device, it is not necessary to provide a power source for operating the driven device, and it is driven at a constant rate. Since the gas derived from the device and the gas derived from the driven device can be mixed, both ends of the cylinder in which the piston is inserted are sealed, and are located near the top dead center and the bottom dead center of the cylinder. It is preferable that the upper dead center side gas outlet inlet and the lower dead center side gas outlet inlet for introducing / injecting gas are respectively provided and driven devices that are operated by driving the driving device.

  Further, in the mixed gas manufacturing apparatus of the present invention, the switching valve includes a gas introduction pipe for supplying pressurized gas, a top dead center side gas introduction port of the driving device, and a bottom dead center side gas introduction of the driving device. When connected to the inlet, the pressurized gas introduced from the gas inlet pipe can be guided to the top dead center side gas inlet or the bottom dead center side gas inlet by the switching valve. The piston can be driven.

  When the mixed gas manufacturing apparatus of the present invention has a gas mixing section for mixing the gas derived from the driving apparatus and the gas derived from the driven apparatus, the mixed gas is manufactured in advance in the gas mixing section. For this reason, the produced mixed gas can be used as it is.

  In the mixed gas manufacturing apparatus of the present invention, when the gas mixing unit is connected to the switching valve via the gas transfer pipe for transferring the gas, the gas derived from the drive device is directly gasified through the gas transfer pipe. It can lead to the mixing part.

  The switching device used in the mixed gas production apparatus of the present invention is between the top dead center side gas outlet and the gas mixing unit of the driven device and between the bottom dead center side gas outlet and the gas mixing unit of the driven device. In this case, only the gas derived from the driven device can be guided to the gas mixing unit while avoiding that the gas introduced into the driven device is directly introduced into the gas mixing unit.

  When the regulator for adjusting the pressure of the supplied pressurized gas is provided in the gas introduction pipe of the mixed gas production apparatus of the present invention, the pressure of the supplied pressurized gas is adjusted to a predetermined pressure. Therefore, even if the pressure of the supplied pressurized gas varies, the pressurized gas derived from the driving device and the gas derived from the driven device are mixed at a constant ratio. Can do.

  Further, when a gas introduction pipe is provided in the switching device used in the mixed gas production apparatus of the present invention and a buffer tank is connected to the gas introduction pipe, the pressure of the gas introduced from the driven device varies. Therefore, even if there is a fluctuation in the pressure of the gas supplied to the driven device, the pressurized gas derived from the driving device and the gas derived from the driven device are at a certain ratio. Can be mixed.

  Further, in the mixed gas production apparatus of the present invention, the limiter operating portion is disposed on the piston of the driving device or the piston of the driven device, the piston moves to the driving device side, and contacts the limiter operating portion at a predetermined position. The drive device side limiter is disposed so as to operate, the piston moves toward the driven device side, and the driven device side limiter is disposed so as to operate in contact with the limiter operating portion at a predetermined position. The drive unit and the driven device side limiter are connected via a pipe so that the gas at the top dead center in the cylinder of the drive device is conducted through the driven device side limiter when the side limiter is activated, and the driven device side limiter is connected. The driven device limiter and the switching valve are connected so that the switching valve is operated by the gas pressure derived from the When the switching valve and the gas mixing unit are connected via a pipe for conducting the gas led out through the switching valve to the gas mixing unit and the driving device side limiter is activated, the bottom dead in the cylinder of the driving device The driving device and the driving device side limiter are connected via a pipe so that the point side gas is conducted through the driving device side limiter, and the switching valve is operated by the gas pressure derived from the driving device side limiter. A drive device side limiter and a switching valve are connected, and the switching valve and the gas are connected via a pipe for conducting the gas led out from the top dead center side gas outlet inlet of the driving device through the switching valve to the gas mixing unit. When the mixing unit is connected, the mixed gas production apparatus can be operated continuously, so that the mixed gas can be produced continuously.

  Next, the mixed gas production apparatus of the present invention will be described with reference to the drawings, but the present invention is not limited only to the embodiments described in the drawings.

  FIG. 1 is a schematic explanatory view showing an embodiment of the mixed gas production apparatus of the present invention. In FIG. 1, the drive device 1 can be configured, for example, by inserting a piston 3 into a cylinder 2 and sealing both ends of the cylinder 2. The driving device 1 is driven by the operation of the piston 3 by the pressure of the pressurized gas introduced into the cylinder 2.

  The inner diameter and length of the cylinder 2 are arbitrary, and are preferably determined as appropriate according to the use of the mixed gas production apparatus of the present invention. The piston 3 is preferably provided with a piston ring (not shown), for example, so as to be slidable on the inner surface of the cylinder 1 and prevent gas from leaking between the two.

  A piston rod 3 a protrudes from one side surface of the cylinder 2. In the opening of the cylinder 1 on the piston rod 3a side, the gap between the piston rod 3a and the cylinder 1 is made as small as possible from the viewpoint of reducing the amount of gas leakage in the cylinder 1, and the piston rod 3a is slidable. It is preferable to adjust so that.

  A top dead center side gas lead-in inlet 2a is provided at the top dead center of the cylinder 2 or in the vicinity thereof. The bottom dead center side gas outlet 2b is disposed.

  When the supplied pressurized gas is introduced from the top dead center side gas outlet 2a by the switching valve 8, which will be described later, the bottom dead center side gas in the cylinder 2 is led out from the bottom dead center side gas outlet 2b. Is done. On the contrary, when the supplied pressurized gas is introduced from the bottom dead center side gas outlet 2b by the switching valve 8, the top dead center side gas in the cylinder 2 is the top dead center side gas guide. Derived from the entrance 2a.

  The top dead center side gas outlet inlet 2a and the bottom dead center side gas outlet inlet 2b of the driving device 1 are connected to the switching valve 8, respectively. Usually, the top dead center side gas outlet inlet 2a and the bottom dead center side gas outlet inlet 2b can be connected to the switching valve 8 through pipes 9a and 9b, respectively.

  The switching valve 8 is connected to a gas mixing unit 11 disposed as necessary via a gas transport pipe 12a.

  The gas mixing unit 11 is provided to mix the gas derived from the driving device 1 and the gas derived from the driven device 4. However, when the gas derived from the driving device 1 and the gas derived from the driven device 4 are introduced directly into the reaction system, for example, it is not particularly necessary to provide the gas mixing unit 11.

  Note that the gas derived from the drive device 1 and the gas derived from the driven device 4 are both pulsated because they are derived by the reciprocating motion of the piston. However, when the gas derived from the driving device 1 and the gas derived from the driven device 4 are once introduced into the gas mixing unit 11, this pulsation can be reduced. Therefore, when it is necessary to avoid the pulsation, it is preferable to dispose the gas mixing unit 11.

  The gas mixing part 11 should just be comprised so that the gas conveyed from gas conveyance pipe 12a, 12b and 12c mentioned later may be mixed together.

  Typical examples of the gas mixing unit 11 include a mixing container to which the gas transfer pipes 12a, 12b, and 12c are connected, and a composite pipe that is configured so that each gas in the gas transfer pipes 12a, 12b, and 12c is combined into one. However, the present invention is not limited to such examples.

  The gas introduction pipe 10 a is used for supplying the driving apparatus 1 with a pressurized gas supplied from a source (not shown) of a pressurized gas as a raw material. Usually, a gas introduction pipe 10 a connected to a source of pressurized gas (not shown) of the raw material is connected to the driving device 1 via a switching valve 8.

  In order to adjust the pressure of the pressurized gas supplied, it is preferable that the regulator 18 which is an apparatus which adjusts the pressure of the gas supplied is arrange | positioned in the gas introduction pipe | tube 10a.

  In general, the gas has a property that the number of molecules of the gas contained in the gas varies greatly depending on the pressure change. However, when the regulator 18 is provided in the gas introduction pipe 10a, the pressure of the pressurized gas supplied is changed. Since the pressure can be adjusted to a predetermined pressure, the gas derived from the driving device 1 and the gas derived from the driven device 4 are maintained by keeping the number of molecules of the pressurized gas supplied from the gas introduction tube 10a constant. There is an advantage that the mixing ratio can be kept constant.

  When the pressure of the gas introduced from the gas introduction pipes 10b and 10c for introducing the gas into the driven device 4 varies, the regulator 18 is connected to the gas derived from the driving device 1 and the driven device 4. From the viewpoint of keeping the mixing ratio with the derived gas constant, it is preferable that the gas introduction pipes 10b and 10c are also connected.

  Moreover, it is preferable that buffer tanks 19a and 19b are connected to the gas introduction pipes 10b and 10c, respectively, from the viewpoint of suppressing fluctuations in the pressure of the gas introduced from the driven device 4, if necessary. Examples of the buffer tanks 19a and 19b include a gas storage tank having a capacity of 1 to 3 liters. Any buffer tank may be used as long as it is generally used, and the present invention is not limited by the type and size of the buffer tank.

  The switching valve 8 is configured to supply the pressurized gas conveyed from the gas introduction pipe 10a when the piston 3 reaches or near the top dead center of the cylinder 2 of the driving device 1 to the top dead center side gas of the cylinder 2 of the driving device 1. The gas is introduced into the driving device 1 from the outlet 2a and the bottom dead center side gas in the cylinder 2 of the driving device 1 is led out from the bottom dead side gas outlet 2b, and then conveyed to the gas mixing unit 11 as necessary. When the piston 3 arrives at or near the bottom dead center of the drive device 1, the pressurized gas from the gas introduction pipe 10 a is introduced into the drive device 1 from the bottom dead center side gas outlet 2 b of the drive device 1. The gas at the top dead center side in the cylinder 2 of the drive device 1 is led out from the top dead center side gas lead-in inlet 2a and then used to be conveyed to the gas mixing unit 11 as necessary.

  The specific connection method for connecting the switching valve 8 to the top dead center side gas outlet inlet 2a, the bottom dead center side gas outlet inlet 2b, the gas introduction pipe 10a and the gas transport pipe 12a and the operation mechanism of the switching valve 8 are as follows. It will be described later.

  On the other hand, the driven device 4 can be configured by inserting a piston 6 into the cylinder 5 and sealing both ends of the cylinder 5. The driven device 4 operates in conjunction with the driving of the driving device 1 when the driving device 1 is driven.

  The inner diameter and length of the cylinder 5 of the driven device 4 are arbitrary, and are preferably determined as appropriate according to the use of the mixed gas production apparatus of the present invention. The mixing ratio of the gas derived from the driving device 1 and the gas derived from the driven device 4 is adjusted by adjusting the ratio of the inner diameter of the cylinder 2 of the driving device 1 to the inner diameter of the cylinder 5 of the driven device 4. Can do.

  The piston 6 is preferably provided with a piston ring (not shown), for example, so as to be slidable on the inner surface of the cylinder 5 and prevent gas from leaking between the two.

  A piston rod 6 a protrudes from one side surface of the cylinder 5 of the driven device 4. In the opening of the cylinder 5 on the piston rod 6a side, the gap between the piston rod 6a and the cylinder 5 is made as small as possible from the viewpoint of reducing the amount of gas leakage in the cylinder 5, and the piston rod 6a is slidable. It is preferable to adjust so that.

  At the top dead center of the cylinder 5 of the driven device 4 or in the vicinity thereof, a top dead center side gas outlet inlet 5a for introducing / injecting gas is disposed, and at the bottom dead center of the cylinder 5 or in the vicinity thereof, gas is supplied. A bottom dead center side gas lead-in inlet 5b for lead-in / out is provided.

  For example, as illustrated in FIG. 1, the switching device 13 a is configured to transfer the gas introduced from the gas introduction pipe 10 b between the gas introduction pipe 10 b and the top dead center side gas outlet inlet 5 a. A check valve 14a that does not pass the gas led out from the top dead center side gas lead-in inlet 5a is disposed between the gas feed pipe 12b and the top dead center side gas lead-in inlet 5a. Although the gas derived | led-out from the dead point side gas derivation | leading-out inlet 5a is allowed to pass, it can comprise by arrange | positioning the non-return valve 14b which does not allow the gas which flows in the reverse direction to pass through this.

  Similarly to the switching device 13a, for example, as shown in FIG. 1, the switching device 13b also allows the gas introduced from the gas introduction tube 10c between the gas introduction tube 10c and the bottom dead center side gas outlet 5b. A check valve 14c that is transported to the bottom dead center side gas outlet 5b but does not allow the gas derived from the bottom dead center side gas outlet 5b to pass therethrough is provided, and the gas transport pipe 12c and the bottom dead center side gas outlet The gas derived from the bottom dead center side gas outlet 5b is allowed to pass between 5b and 5b, but a check valve 14d that does not allow the gas flowing in the opposite direction to pass therethrough can be provided. .

  Any of the check valves 14a to 14d may be used as long as they are normally used for preventing gas backflow, and the present invention is not limited by the type of the check valve.

  When the gas is introduced from the switching device 13a to the top dead center side gas outlet 5a via the pipe 9c, the bottom dead center side gas in the cylinder 5 is led out from the bottom dead center side gas outlet 5b. 9d, the check valve 14d, and the gas transport pipe 12c are conveyed to the gas mixing unit 11. On the contrary, when the gas is introduced from the switching device 13b to the bottom dead center side gas outlet 5b through the pipe 9d, the top dead center side gas outlet in the cylinder 5 is the top dead center side gas outlet. 5a, and is conveyed to the gas mixing part 11 through the pipe 9c, the check valve 14b, and the gas conveyance pipe 12b.

  There is no particular limitation on the type of pressurized gas introduced from the gas introduction pipe 10a, and the type of pressurized gas may be determined as appropriate according to the application of the mixed gas production apparatus of the present invention. The pressure of the pressurized gas is not particularly limited as long as it is equal to or higher than the pressure at which the mixed gas production apparatus of the present invention operates. Usually, the pressure (gauge pressure) of the pressurized gas may be about 0.1 to 5 MPa.

  Examples of the supply source of the pressurized gas include a container filled with a pressurized gas (pressurized gas filling container) such as a gas cylinder filled with the pressurized gas. As described above, when a pressurized gas filled container filled with a pressurized gas is used, the pressure of the pressurized gas filled in the pressurized gas filled container can be used without using a power source for the driving device 1. The driving device 1 can be driven using the above.

  The type of gas introduced from the gas introduction pipe 10b and the gas introduction pipe 10c is not particularly limited, and may be determined as appropriate according to the application of the mixed gas production apparatus of the present invention. The gas introduced from the gas introduction pipe 10b and the gas introduction pipe 10c may be at normal pressure, or may be depressurized or pressurized.

  The gases introduced from the gas introduction tube 10a, the gas introduction tube 10b, and the gas introduction tube 10c may be the same or different. When the gases introduced from the gas introduction tube 10a, the gas introduction tube 10b, and the gas introduction tube 10c are all different, three kinds of gases can be mixed. When the gas introduced from the gas introduction tube 10a is different from the gas introduced from the gas introduction tube 10b and the gas introduction tube 10c, two kinds of gases can be mixed. For example, when producing a mixed gas of air and nitrogen gas, pressurized nitrogen gas is used as the pressurized gas introduced from the gas introduction tube 10a, and is introduced from the gas introduction tube 10b and the gas introduction tube 10c. Air may be used as the gas.

  The driving device 1 and the driven device 4 are connected so as to be interlocked. The drive device 1 and the driven device 4 can be connected by connecting the piston rod 3 a of the drive device 1 and the piston rod 6 a of the driven device 4.

  There is no particular limitation on the method of connecting the piston rod 3a and the piston rod 6a. For example, the piston rod 3a and the piston rod 6a may be integrated by a slide bearing, may be integrated by welding, may be integrated by screw fitting, or may be integrated by a joint. Good.

  For example, as shown in FIG. 1, screws having different thread pitches are provided at the tip portions of the piston rod 3a and the piston rod 6a, respectively, and provided at the tip portion of the piston rod 3a and the tip portion of the piston rod 6a, respectively. In the case where the clamp 7 having a pitch corresponding to the pitch of the formed thread is connected to the piston rod 3a and the piston rod 6a by screwing, the clamp 7 is rotated so that the distance between the piston 3 and the piston 6 is increased. Can be adjusted easily.

  FIG. 2 is a schematic explanatory view showing another embodiment of the mixed gas production apparatus of the present invention. In the mixed gas production apparatus shown in FIG. 1, the driving device 1 and the driven device 4 are connected in series by coupling their piston rod 3a and piston rod 6a, whereas in FIG. In the mixed gas production apparatus shown in FIG. 1, the driving device 1 and the driven device 4 are arranged in parallel.

  In the mixed gas production apparatus shown in FIG. 2, the piston rod 3 a is attached so that it can be rotated by the attachment portion 17 a of the support body 16 that is rotatably attached around the shaft 15. The piston rod 6a is attached so as to be rotatable at the portion 17b.

  In the manufacturing apparatus shown in FIG. 2, driving is performed by adjusting the length of the support 16 between the shaft 15 and the mounting portion 17a and the length of the support 16 between the shaft 15 and the mounting portion 17b. The mixing ratio of the gas derived from the apparatus 1 via the switching valve 8 and the gas transport pipe 12a and the gas derived from the driven apparatus 4 via the gas transport pipes 12b and 12c can be adjusted.

  The other components of the mixed gas manufacturing apparatus shown in FIG. 2 may be the same as those of the mixed gas manufacturing apparatus shown in FIG.

  The mixed gas manufacturing apparatus shown in FIGS. 1 and 2 is a manufacturing apparatus having the basic structure of the present invention. When the mixed gas is continuously and automatically manufactured, the mixed gas manufacturing apparatus of the present invention having an aspect capable of continuously manufacturing the mixed gas can be used.

  As a mixed gas production apparatus capable of continuously producing a mixed gas, for example, a limiter actuating portion is disposed on a piston of a driving device or a piston of a driven device, the piston moves to the driving device side, The drive device side limiter is disposed so as to operate in contact with the limiter operating portion at the position, the piston moves to the driven device side, and the driven device side limiter is operated in contact with the limiter operating portion at a predetermined position. When the driven device side limiter is operated, the drive device and the driven device side limiter are connected via a pipe so that the gas at the top dead center in the cylinder of the driving device is conducted through the driven device side limiter. And the driven device side limiter and the switching valve are connected so that the switching valve is operated by the gas pressure derived from the driven device side limiter, The switching valve and the gas mixing section are connected via a pipe for conducting the gas led out from the bottom dead center side gas outlet to the gas mixing section to the gas mixing section, and the drive unit limiter is activated The drive device and the drive device limiter are connected via a pipe so that the gas at the bottom dead center in the cylinder of the drive device is conducted through the drive device limiter, and is derived from the drive device limiter. The drive device side limiter and the switching valve are connected so that the switching valve is operated by the gas pressure, and the gas led out from the top dead center side gas outlet port of the driving device through the switching valve is conducted to the gas mixing unit. For example, an apparatus for producing a mixed gas in which a switching valve and a gas mixing unit are connected via a pipe for performing the above-described operation.

  A suitable example of the mixed gas production apparatus capable of continuously producing the mixed gas of the present invention includes the mixed gas production apparatus shown in FIGS. 3 and 4.

  3 and 4 are schematic explanatory views showing an embodiment of the mixed gas production apparatus of the present invention capable of continuously producing a mixed gas.

  In the mixed gas production apparatus shown in FIG. 3, a limiter actuating portion 21 is disposed on the piston rod 3 a of the piston 3 of the driving device 1 or the piston rod 6 a of the piston 6 of the driven device 4.

  The drive device side limiter 20a operates when the pistons 3 and 6 move in the direction of arrow A, the limiter operating portion 21 contacts the operation portion of the drive device side limiter 20a, and presses the drive device side limiter 20a. Is provided. The driven device side limiter 20b moves when the pistons 3 and 6 move in the direction opposite to the arrow A, the limiter operating portion 21 contacts the operating portion of the driven device side limiter 20b, and presses the driven device side limiter 20b. It is provided to operate.

  Since the gas introduced from the gas introduction pipe 10a enters the switching valve 8 and then enters the cylinder 2 from the bottom dead center side gas outlet 2b of the driving device 1, the pistons 3 and 6 are moved in the direction of arrow A. Moving. Then, the gas existing on the top dead center side of the cylinder 2 is led out from the top dead center side gas lead-in inlet 2a of the driving device 1 and introduced into the gas mixing unit 11 through the gas transport pipe 12a. The top dead center side gas outlet 2c of the driving device 1 is connected to the pipe 22a of the driven device side limiter 20b, and the gas passage in the driven device side limiter 20b is closed. No gas leaks outside from the side gas outlet 2c.

  Further, in the driven device 4, when the piston 6 in the cylinder 5 moves in the direction of arrow A, the gas is led out from the bottom dead center side gas lead-in inlet 5b and introduced into the gas mixing unit 11 through the pipe 12c. The

  The gas introduced from the gas introducing pipe 10a is introduced to the bottom dead center side in the cylinder 2 through the bottom dead center side gas outlet 2b, and after driving the piston 3, the bottom dead center side of the drive device 1 The gas is led out from the gas lead-in inlet 2d and introduced into the drive device side limiter 20a through the relief valve 23 and the pipe 22b.

  The relief valve 23 increases the pressure of the gas introduced into the relief valve 23 after driving the piston 3 so that the gas is introduced into the drive device side limiter 20a when the gas pressure reaches a predetermined value. It is the control device for doing. Therefore, the relief valve 23 does not operate when the pressurized gas is introduced into the cylinder 2 and the piston 3 is operating, but the operation of the piston 3 is stopped and the pressure of the gas at the bottom dead center side in the cylinder 2 is stopped. It is preferable to set to operate when the pressure becomes high and reaches a predetermined pressure.

  There is no limitation in particular in the kind of relief valve 23, In this invention, the relief valve generally used can be used.

  When the drive device side limiter 20a is operated by the limiter operating portion 21, the bottom dead center side pressurized gas in the cylinder 2 of the drive device 1 is introduced into the drive device side limiter 20a via the pipe 22b. The pressurized gas introduced into the drive device side limiter 20a is introduced into the switching valve 8 through the pipe 24b.

  When the pressurized gas from the pipe 24b is introduced into the switching valve 8, the switching valve 8 is switched by the movement of the moving valve 8a in the switching valve 8 in the direction of arrow B due to the pressure of the pressurized gas. A state when the moving valve 8a moves in the direction of arrow B is shown in FIG.

  In FIG. 4, the driven device side limiter 20b is arranged to operate when the pistons 3 and 6 move in the direction of arrow C and the limiter operating portion 21 comes into contact with the operating portion of the driven device side limiter 20b. .

  Since the pressurized gas introduced from the gas introduction pipe 10a enters the switching valve 8 and then enters the cylinder 2 from the top dead center side gas outlet 2a of the driving device 1, the pistons 3 and 6 are moved to the arrow C. Move in the direction. Then, the gas existing on the bottom dead center side of the cylinder 2 is led out from the bottom dead center side gas lead-in inlet 2b of the driving device 1 and introduced into the gas mixing unit 11 via the gas transport pipe 12a. The bottom dead center side gas outlet 2d of the driving device 1 is connected to the pipe 22b of the driving device side limiter 20a, and the gas passage in the driven device side limiter 20a is closed. No gas leaks outside from the side gas outlet 2d.

  On the other hand, in the driven device 4, when the piston 6 in the cylinder 5 moves in the direction of arrow C, gas is led out from the top dead center side gas lead-in inlet 5a and introduced into the gas mixing unit 11 through the pipe 12d. The

  The pressurized gas introduced from the gas introduction pipe 10a is introduced into the cylinder 2, and after driving the piston 3, it is led out from the top dead center side gas lead-in inlet 2c of the driving device 1, and the relief valve 23 and the pipe 22a. Is introduced into the driven device side limiter 20b.

  As described above, in the relief valve 23, when the pressure of the gas introduced into the relief valve 23 is increased after the piston is driven and the gas pressure reaches a predetermined value, the gas is introduced into the driven device side limiter 20b. Operates as

  The relief valve 23 is not activated when pressurized gas is introduced into the cylinder 2 and the piston 3 is operating, but the operation of the piston 3 is stopped and the pressure of the gas at the top dead center side in the cylinder 2 is high. Therefore, it is preferable to set so as to operate when a predetermined pressure is reached.

  The pressurized gas introduced into the driven device side limiter 20b is introduced into the switching valve 8 through the pipe 24a.

  When the pressurized gas from the pipe 24a is introduced into the switching valve 8, the switching valve 8 is switched by moving the moving valve 8a in the switching valve 8 in the direction of the arrow D by the pressure of the pressurized gas. When the switching valve 8 is switched, the moving valve 8a in the switching valve 8 returns to the position shown in FIG.

  As described above, the moving valve 8a in the switching valve 8 reciprocates in the direction of the arrow B in FIG. 3 or the arrow D in FIG. 4 using the pressure of the pressurized gas introduced from the gas introduction pipe 10a. Since the piston 3 in the driving device 1 and the piston 6 in the driven device 2 reciprocate in the directions of arrow A in FIG. 3 and arrow C in FIG. 4, respectively, a mixed gas can be produced continuously.

  In the mixed gas production apparatus shown in FIGS. 3 and 4, a regulator (not shown) for adjusting the pressure of the pressurized gas to be supplied is disposed in the gas introduction pipe 10a. Is preferred. When the regulator is provided in the gas introduction pipe 10a, the pressure of the supplied pressurized gas can be adjusted to a predetermined pressure, so that the gas derived from the driving device 1 and the gas derived from the driven device 4 There is an advantage that the mixing ratio can be kept constant.

  Further, in the mixed gas production apparatus shown in FIGS. 3 and 4, the switching devices 13a and 13b shown in FIG. 1 are arranged, but the description thereof is omitted in the drawings.

  When the mixed gas production apparatus of the present invention shown in FIG. 3 and FIG. 4 is used, the mixed gas can be produced continuously. For example, although it depends on the scale of the production apparatus, it is 400 per minute. About 500 liters of mixed gas can be produced.

  Next, the structure of the drive device side limiter 20a and the driven device side limiter 20b will be described with reference to FIG. 5 (a) and 5 (b) are schematic explanatory views showing the operating conditions of the limiter that can be used in the present invention, respectively, but the present invention is not limited to such an embodiment.

  Since the same limiter can be used for the drive device side limiter and the driven device side limiter, both will be collectively referred to as the limiter 20 in FIG.

  First, as shown in FIG. 5A, for example, even if a gas is to be introduced from the gas inlet 25 of the limiter 20, the gas passage is obstructed by the piston head 27 a of the limiter 20. Not introduced inside.

  Next, when the piston rod 27b of the limiter 20 is pressed by a limiter operating portion (not shown), the piston rod 27b is pushed into the limiter 20 as shown in FIG. A gas passage is formed inside the limiter 20, and the gas inlet 25 and the gas outlet 26 communicate with each other. For convenience, the gas inlet 25 and the gas outlet 26 are described as one gas inlet and the other as the gas outlet, but they are opposite, that is, the gas outlet and the gas inlet, respectively. There may be.

  Next, when the pressure that the piston rod 27b of the limiter 20 has received by the limiter actuating portion 21 is released, the piston 28 is moved by the spring 28 mounted inside the limiter 20 as shown in FIG. The rod 27b returns to the original position. Therefore, even if a gas is to be introduced from the gas inlet 25 of the limiter 20, the gas passage is obstructed by the piston head 27 a of the limiter 20, so that the gas is not introduced into the limiter 20.

  In the limiter 20 shown in FIGS. 5A and 5B, a gas vent hole 29 is provided. As shown in FIG. 5A, the gas vent hole 29 allows the gas inside the limiter 20 to pass through the gas vent hole 29 when the gas inlet 25 of the limiter 20 is blocked by the piston head 27 a. By discharging to the outside, the internal pressure of the limiter 20 can be released. When the piston rod 27b is pressed and a gas passage is formed in the limiter 20, the gas vent hole 29 exists in the gas passage as shown in FIG. 5B. Does not play that role.

  In addition, when the limiter 20 can be operated even if the gas vent hole 29 is not provided, the gas vent hole 29 may not be provided.

  As described above, the mixed gas manufacturing apparatus of the present invention uses, for example, the pressure of a pressurized gas filled in a pressurized gas filling container such as a gas cylinder, The driving can be stopped by stopping the introduction of the pressurized gas into the driving device.

  Therefore, the mixed gas production apparatus of the present invention can be used in a place where there is no electrical equipment for driving a motor, a compressor, etc., and further, gas does not leak out like a compressor. The flammable gas and other gases can be safely mixed without the need for special equipment, and the equipment itself can be reduced in weight and size, reducing energy costs and other running costs. Can be achieved.

  Furthermore, according to the mixed gas production apparatus of the present invention, a special drive device such as a motor or a compressor is not required, so that the mixed gas can be easily produced with almost no noise.

  In addition, since the mixed gas production apparatus of the present invention can be made compact in itself, it is excellent in portability, so it can be suitably used in various situations that require mixing of multiple types of gases. can do.

  Furthermore, when the mixed gas production apparatus capable of continuously producing the mixed gas of the present invention is used, the mixed gas can be automatically and continuously operated using the pressure of the pressurized gas. Can be produced efficiently and continuously.

  Next, the present invention will be described in more detail based on examples. However, the present invention is not limited to such examples.

Example 1
Using the mixed gas production apparatus of the present invention, air (oxygen gas content: about 21%) and nitrogen gas were mixed to produce a mixed gas having an oxygen gas concentration of about 7%.

  More specifically, a mixed gas producing apparatus capable of continuously producing a mixed gas shown in FIGS. 3 and 4 was used. A cylinder with a volume of 1.57 L (diameter: 80 mm) is used as the cylinder 2 of the driving device 1, and a cylinder with a volume of 4.8 L (diameter: 40 mm) is used as the cylinder 5 of the driven device 4. The stroke was set to 200 mm.

  For driving the mixed gas production apparatus, nitrogen gas was introduced from the gas introduction pipe 10a using, as the pressurized gas, nitrogen gas whose pressure (gauge pressure) supplied from the nitrogen gas cylinder was pressurized to 0.3 MPa. As a result, the mixed gas production apparatus was operated by reciprocating 133 times per minute, and was able to produce about 300 L of mixed gas having an oxygen gas concentration of 7% ± 1%.

  From the above results, according to the mixed gas manufacturing apparatus used in Example 1, the pressure of the pressurized gas can be obtained without a special driving device such as a motor or a compressor that requires a power source or a battery. Since it can be operated by using it, not only can the energy cost be reduced, but there is no risk of noise or ignition when using a motor or compressor, etc. It can be seen that the gases can be mixed safely when the gases are mixed.

It is a schematic explanatory drawing which shows one embodiment of the manufacturing apparatus of the mixed gas of this invention. It is a schematic explanatory drawing which shows other one embodiment of the manufacturing apparatus of the mixed gas of this invention. It is a schematic explanatory drawing which shows other one embodiment of the manufacturing apparatus of the mixed gas of this invention. It is a schematic explanatory drawing which shows other one embodiment of the manufacturing apparatus of the mixed gas of this invention. (A) And (b) is a schematic explanatory drawing which shows the operating condition of the limiter which can be used for the manufacturing apparatus of the mixed gas of this invention, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drive device 2 Cylinder 2a Top dead center side gas outlet inlet 2b Bottom dead center side gas outlet inlet 3 Piston 3a Piston rod 4 Driven device 5 Cylinder 5a Top dead center side gas outlet inlet 5b Bottom dead center side gas outlet inlet 6 Piston 6a Piston rod 7 Clamp 8 Switching valve 8a Movement valve 9a Piping 9b Piping 9c Piping 9d Piping 10a Gas introducing tube 10b Gas introducing tube 10c Gas introducing tube 11 Gas mixing part 12a Gas conveying tube 12b Gas conveying tube 12c Gas conveying tube 13a Switching device 13b Switching device 14a Check valve 14b Check valve 14c Check valve 14d Check valve 15 Shaft 16 Support body 17a Support body mounting part 17b Support body mounting part 18 Regulator 19a Buffer tank 19b Buffer tank 20 Limiter 20a Drive unit side limiter 20b obedience Apparatus limiter 21 limiter operation portion 22a piping 22b piping 23 relief valve 24a piping 24b pipe 25 gas inlet 26 gas outlet 27a piston head 27b the piston rod 28 a spring 29 the gas vent hole

Claims (4)

Gas for mixing a driving device for driving the pressure of the supplied pressurized gas, and a driven device that operates by the driving device is driven, a gas derived from the gas and a driven device derived from the drive and a mixing section, the piston of the piston and the follower device for a drive device as a driving device and a driven device is interlocked is connected,
When the piston reaches or near the top dead center of the drive unit, the pressurized gas from the gas introduction pipe is introduced into the top dead center side gas outlet of the drive unit and the gas in the cylinder of the drive unit is bottom dead center. When the piston reaches the bottom dead center of the drive device or in the vicinity thereof, the pressurized gas from the gas introduction pipe is introduced into the bottom dead center side gas lead-in inlet of the drive device. A switching device for introducing gas into or out of the cylinder of the driven device in conjunction with the driving of the driving device, having a switching valve for deriving the gas in the cylinder from the top dead center side gas outlet inlet Is a mixed gas production device connected to a driven device ,
A limiter actuating portion is disposed on the piston of the driving device or the piston of the driven device,
A drive device side limiter having a piston rod, a gas introduction port and a gas discharge port is arranged to operate when the piston moves to the drive device side and contacts the limiter operation part at a predetermined position,
A driven device side limiter having a piston rod, a gas inlet and a gas outlet is arranged to operate when the piston moves to the driven device side and contacts the limiter operating portion at a predetermined position,
When the driven device side limiter is activated, the driving device and the driven device side limiter are connected via a pipe so that the gas at the top dead center in the cylinder of the driving device is conducted through the driven device side limiter, The gas inlet and the gas outlet communicate with each other by the piston rod of the driven device side limiter, and the driven device limiter and the switching valve are connected so that the switching valve is operated by the pressure of the gas derived from the gas outlet. The switching valve and the gas mixing unit are connected via a pipe for conducting the gas led from the bottom dead center side gas outlet port of the driving device through the switching valve to the gas mixing unit,
When the driving device side limiter is activated, the driving device and the driving device side limiter are connected via a pipe so that the gas at the bottom dead center in the cylinder of the driving device is conducted through the driving device side limiter, The drive device side limiter and the switching valve are connected so that the gas introduction port communicates with the gas discharge port by the piston rod of the drive device side limiter, and the switching valve is operated by the pressure of the gas derived from the gas discharge port. The switching valve and the gas mixing unit are connected via a pipe for conducting the gas led out from the top dead center side gas lead-out inlet of the driving device through the switching valve to the gas mixing unit.
An apparatus for producing a mixed gas . Switching device, according to claim 1, wherein disposed respectively in between the bottom dead center side gas outlet inlet and a gas mixing unit and between the follower unit and the top dead center side gas outlet inlet and a gas mixing portion of the driven device The mixed gas production equipment. The apparatus for producing a mixed gas according to claim 1 or 2, wherein a regulator for adjusting the pressure of the supplied pressurized gas is disposed in the gas introduction pipe. The apparatus for producing a mixed gas according to any one of claims 1 to 3 , wherein a gas introduction pipe is disposed in the switching device, and a buffer tank is connected to the gas introduction pipe.