JP2001194380A - Tracer particle feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the maintainability of a tracer particle feeder of uniformly and stationarily feeding tracer particles to measure the speed of the fluid in a gas burner or the like, and measure the flow distribution of the fluid by visualizing the fluid. SOLUTION: An outer hollow cylinder 2 is fixed by clamps 251, 252 from both sides of tapered flanges 211, 212, 221, 232 provided on a body member 21, a funnel-like member 22 on a conical discharge pipe side and a funnel-like member 23 on a suction pipe side. An inner cylinder 3 is held in the outer cylinder 2 by a pin-like locking pin 31, and a mesh 4 is fixed inside thereof via an innermost cylinder 37 and a coil spring 38.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of measuring the speed of a fluid such as a gas burner or visualizing the fluid to uniformly and constantly supply tracer particles used for measuring the flow distribution of the fluid. The present invention relates to a tracer particle supply device for performing

[0002]

2. Description of the Related Art In order to investigate characteristics of a gas burner or the like, or to diagnose a failure of a gas burner or the like, measurement of a fluid performed by a laser Doppler velocimeter or photographing is performed by:
It is common to use tracer particles. That is, in a fluid such as a gas or a liquefied gas to be measured, by supplying a powder composed of a large number of tracer particles, the fluid velocity is measured from the flow velocity of the tracer particles,
In addition, the flow distribution of the fluid is measured by taking a picture of the tracer particles flowing together with the fluid and visualizing the fluid. As a device for supplying the tracer particles, as shown in FIG. 6, a device 100 in which a stirrer 101, a suction pipe 102 and a discharge pipe 103 are filled with a tracer particle 106 in a conical flask 104 attached with a rubber stopper 105 is used. I was The stirrer 101 has a propeller shape and is connected to the motor 109. The height is adjusted so as to be located inside the tracer particles 106, and the motor 109 is rotated to stir the tracer particles 106. On the other hand, the suction pipe 1
02 is connected to a gas cylinder 108 via a flow control valve 107, and the other side is
4 extend to the vicinity of the upper portion of the stirrer 101 located in the tracer particles 106 filled in the inside. One side of the discharge tube 103 is opened near the rubber stopper 105. And the other side is opened in the flow field to be visualized. By stirring the tracer particles 106 with the stirrer 101, the deposition state of the tracer particles 106 in the vicinity of the stirrer 101 can be made substantially uniform, and furthermore, the gas is supplied from the gas cylinder 108 to make the deposition substantially uniform. Tracer particles 106 are blown up together with gas in Erlenmeyer flask 104. And the discharge tube 1
Tracer particles 106 are supplied into the flow field together with the gas through 03.

[0003]

Since the flow velocity and flow distribution of a fluid are measured indirectly by the tracer particles supplied to the fluid, the tracer particles in the fluid are uniformly and constantly measured. Need to be supplied. That is, when the flow of the fluid is uniform, since the supply of the tracer particles is uniform and steady, the measurement results of the flow speed and the flow distribution of the tracer particles become uniform. However, when using this device, depending on the state of deposition of tracer particles in the Erlenmeyer flask and the amount of tracer particles,
In some cases, the supply of the tracer particles is not performed uniformly and constantly. In view of the above, the inventors of the present application filed a prior application with a hollow outer cylinder that forms a gas flow path in the axial direction, and a suction pipe that is connected to one side of the hollow outer cylinder to allow gas to flow in and that has a smaller diameter than the hollow outer cylinder. A discharge pipe having a smaller diameter than the hollow outer cylinder, which is connected to the other side of the hollow outer cylinder in a form opposed to the suction pipe and releases gas together with tracer particles stored in the hollow outer cylinder; And an inner cylinder having a hollow hole having a diameter larger than that of the suction pipe and the discharge pipe, which is held by the apparatus, has been proposed. However, when replenishing the tracer into the tracer particle supply device, the funnel-shaped part fixed by bolts and nuts must be removed, which has a problem in workability. Further, it has been found that there is still a weak point in the maintainability such as difficulty in removing the inner cylinder fixing the mesh serving as the turbulent flow generation grid member for suppressing the pulsation when supplying the tracer particles and difficulties in positioning.

Accordingly, the present invention has been made to solve the above-mentioned problems, and replenishes tracer particles in a uniform and steady tracer particle supply device for a long time without causing pulsation. In this case, the present invention provides a tracer particle supply device that improves maintainability.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and has been made in view of the above-mentioned circumstances. A hollow outer cylinder having a hollow main body member having a flange at at least one end, and a funnel having a funnel-shaped wide-mouth side end and a flange disposed opposite to the flange. And a clamp for clamping the flange of the main body member and the flange of the funnel-shaped member from both sides.

[0006] Tracer particles are stored inside the hollow outer cylinder, and when gas is sent from below vertically through a suction pipe provided on one side of the hollow outer cylinder, the gas flow causes the gas to flow into the hollow outer cylinder. The tracer particles are blown up in the inner cylinder held in the cylinder. Since the discharge tube provided on the other side of the hollow outer cylinder is provided so as to face the tracer nozzle from the vertically upper side, part of the tracer particles blown up without changing the direction of the gas flow is discharged. To the outside and supplied into the flow field. In addition, the tracer particles that have not been released to the outside from the discharge tube have a gas flow direction changed near the discharge tube, pass between the inner tube and the discharge tube, and are provided between the hollow outer tube and the inner tube. Through the gap and falls near the tube wall of the hollow outer cylinder. Therefore, tracer particles are deposited between the hollow outer cylinder and the inner cylinder near the tracer nozzle.

With the movement of such tracer particles,
Since the tracer particles are discharged from the discharge tube into the flow field, the tracer particles stored in the tracer particle supply device gradually decrease. Therefore, it is necessary to replenish the tracer particles into the tracer particle supply device when the amount has decreased to some extent. At this time, it is necessary to disassemble the hollow outer cylinder to replenish the tracer particles,
It is easy to disassemble by making it like the present invention,
Replenishment of tracer particles becomes very easy.

It is preferable that one of these flanges is formed so that the outer diameter side is thinner than the inner diameter side. By forming the flange in this manner, the attachment and detachment of the clamp that clamps the flange provided at the ends of the main body member and the funnel-shaped member from both sides becomes easy. In addition, by appropriately setting the dimensions of the two, the force for clamping the flange from both sides when the clamp is mounted becomes strong, so that the airtightness inside the hollow outer cylinder can be increased. Therefore, even if the pressure of the gas supplied to the inside of the hollow outer cylinder is increased to supply the tracer particles into the flow field, the gas leaks from the gap between the main body member and the funnel-shaped member constituting the hollow outer cylinder. Can be difficult.

On the other hand, the clamp preferably clamps these flanges over the entire circumference.
Thereby, the airtightness inside the tracer particle supply device can be further improved. Further, it is preferable to use a type in which this clamp is divided in the circumferential direction and each of them is connected by a hinge or the like. Thus, if any one of the hinges is detached, the flange can be detached easily, so that the maintenance property such as the supply of tracer particles to the inside is further improved.

Further, a tracer particle supply device which forms a gas flow path in the axial direction and discharges gas together with tracer particles stored in a hollow outer cylinder having an inner cylinder held therein is provided on an outer surface of the inner cylinder. It is preferable that the provided inner cylinder locking member is positioned by contacting the outer cylinder locking member provided on the inner wall surface of the hollow outer cylinder. When replenishing tracer particles inside a hollow outer cylinder having an inner cylinder inside, it may be necessary to remove this inner cylinder. In such a case, if the inner cylinder is completely fixed in the hollow outer cylinder, it is not easy to remove. Therefore, the inner cylinder can be easily removed by providing the inner cylinder locking member on the outer surface of the inner cylinder and providing the outer cylinder locking member on the outer cylinder side so as to be in contact with the inner cylinder locking member. The inner cylinder locking member or the outer cylinder locking member does not need to be provided on the entire circumference, and may be provided so as to be partially cut away. This makes it easier for the tracer particles to pass between the outer cylinder and the inner cylinder. It is preferable that one of them is provided on the entire circumference. If both are provided so as to be partially cut out, the inner cylinder may fall without being locked by the locking members of both if alignment is not performed. However, in this way, the user can mount the camera without worrying about the direction of the inner cylinder. It is preferable that the side provided so as to be partially cut away is the inner cylinder side. The inner cylinder is to be removed by hand, so that it is made as light as possible. Further, it is preferable that the radial width of the locking member on the side provided so as to be partially cut out is longer than the radial width of the locking member provided on the entire circumference. By doing so, the gap between the hollow outer cylinder and the inner cylinder can be further increased, so that the passage of tracer particles can be made easier. In addition, it is desirable that the inner cylinder locking members are arranged in a pin shape and arranged evenly.

Further, it is preferable that the inner cylinder is provided with a tilt preventing projection member at a position separated from the inner cylinder locking member. When only the above-mentioned locking member is provided, when the tracer particles enter between the inner cylinder locking member and the outer cylinder locking member,
There is a possibility that the inner cylinder is mounted in the hollow outer cylinder in an inclined state. When mounted at an angle, the circulation of the tracer particles inside the hollow outer cylinder may not be performed smoothly, so that the concentration of the tracer particles supplied into the flow field may be uneven. By providing the above-described inclination preventing protrusion member, it is possible to prevent the attachment from being inclined. Such a tilt prevention projecting member may be provided on the hollow outer cylinder side, but is preferably provided on the inner cylinder side. This is because providing the inner cylinder locking member on the hollow outer cylinder side may obstruct the insertion of the above-described inner cylinder locking member into the hollow outer cylinder. Also,
The inclination preventing projecting member may be provided on the entire circumference, but is preferably provided so as to be partially cut out, and more preferably, it is good to be evenly arranged in a pin shape.

Further, in the tracer particle supply device for releasing gas together with the tracer particles stored inside the hollow outer cylinder having the inner cylinder held therein, the inner cylinder has at least two inner diameters at positions separated from each other. A swelling member that swells,
It is preferable to include an extendable pressing member disposed between the two bulging members and a turbulence generating grid member positioned between the bulging members by the pressing member.

When the turbulence generating grid member for suppressing the change in the concentration of the tracer particles is provided in the inner cylinder, the turbulent flow generating grid member has various thicknesses by being sandwiched by a telescopic pressing member such as a coil spring for positioning. It can correspond to a turbulence generation grid member. That is, the turbulence generation grid member is
It is necessary to change the lattice spacing depending on the properties of the tracer particles placed inside the hollow outer cylinder. When the grid spacing is changed, the thickness of the wire for forming the grid changes, so that the thickness of the turbulence generating grid member often changes. On the other hand, if the length of the hollow outer cylinder is constant, it is difficult to freely change the length of the inner cylinder for holding the turbulence generating lattice member. For this reason, when there is no extendable pressing member, an inner-end tube of various lengths for positioning the turbulence generation lattice member in the inner cylinder according to the thickness of the turbulence generation lattice member is prepared. It is necessary to keep. However, it is wasteful to arrange the inner and lower cylinders of various lengths in this way, and it is difficult to substantially completely position the cylinders in consideration of design errors between them. Therefore, such a problem can be solved by providing a pressing member that can be extended and contracted so as to press against the swelling member provided in the inner cylinder. Note that both the pressing member and the inner cylinder may be used. If only the pressing member is used, the free length of the pressing member needs to be longer than the length of the inner cylinder. For this reason, when assembling the inner cylinder, the turbulence generating lattice member protrudes from the inner cylinder, so that it may be difficult to position the turbulence generating lattice member inside the inner cylinder. By using the inner cylinder, the free length of the pressing member can be made shorter than the length of the inner cylinder. Therefore, the inner cylinder can be assembled in a state where the turbulence generating lattice member is positioned inside the inner cylinder, which facilitates the assembly.

If at least one of the bulging members of the inner cylinder is a detachable lid member, the inner cylinder, the turbulence generating lattice member and the pressing member provided inside can be easily removed. Exchange can be easily performed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a tracer particle supply device according to the present invention will be described in detail with reference to the drawings, taking an example of a specific embodiment. FIG. 1 is an overall view showing a connection state of a tracer particle supply device 1 according to the present invention, and FIG. 2 is a sectional view thereof. The hollow outer cylinder 2 is configured by fixing the discharge tube-side funnel-shaped member 22 and the suction tube-side funnel-shaped member 23 from both sides with the main body member 21 interposed therebetween. The main body member 21 has a tubular shape with both ends opened, and flanges 21 are provided at both ends.
1 and 212 are formed on the outer peripheral side, and O-ring grooves 213 and 21 for mounting an O-ring on the inner peripheral side.
4 are formed. Further, the discharge tube side funnel member 22
Is formed in a triangular pyramid shape, and a flange 221 is formed at an end on the opening side thereof so as to have substantially the same outer diameter as a flange 211 formed on the main body member 21. In addition,
When the flange 211 formed on the main body member 21 and the flange 221 formed on the discharge tube-side funnel member 22 are combined, they are tapered so that the apex angle becomes 40 °. The O-ring groove 213 on the body member 21 side
The ring is attached, and the flange 211 and the flange 221 are attached.
And the body member 21 and the discharge tube-side funnel member 22 are fastened by being sandwiched from both sides by a 20 ° clamp 251. This 20 ° type clamp 251 is shown in FIG.
As shown in the figure, a semicircular clamp body 2512, 251
One side is rotatably fastened by a hinge 2513 and the other is closed by a thumb screw 2511. Since the inner surface of the clamp body 2512 is formed at a vertex angle of about 40 °, the angle is approximately the same as the vertex angle of the combined flange 211 and flange 221 described above. FIG.
When the O-ring is attached to the O-ring groove 213 and the flange 211 and the flange 221 are aligned with each other, the flange 211 and the flange 221 are slightly separated from each other. In this state, the two flanges 211 and 221 are sandwiched by the 20 ° clamp 251 and the thumb screw 2511
Tighten. Then, the distance between the flange 211 and the flange 221 is reduced, the O-ring is crushed, and the airtightness of this portion is maintained.

The suction tube-side funnel 23 is also formed in the shape of a triangular pyramid, and its outer end is substantially the same in outer diameter as the flange 212 formed on the main body 21. Is formed with a flange 232. The flanges 212 and 232 are tapered so that the apex angle is 40 °. Then, an O-ring is attached to the O-ring groove 214 on the side of the main body member 21, and the flanges 212 and 232 are put together to form a 20 ° clamp 252.
The main body member 21 and the suction pipe-side funnel member 23 are fastened together.

The main body member 21 has a total length of about 300 mm,
The outer diameter excluding the flanges 211 and 212 is about 102 mm and the inner diameter is about 90 mm.
Reference numeral 12 has an outer diameter of about 120 mm. Also, the whole thickness is about 6
Since it is formed of a transparent acrylic plate having a thickness of 2 mm, it has sufficient strength with respect to the gas pressure sucked into the inside and allows the inside state to be observed.

On the other hand, the top 2 of the suction tube-side funnel 23
The reference numeral 33 has a tracer nozzle 5 formed on an outer portion thereof and is screwed with an M30 screw. The tracer nozzle 5 has a double pipe structure and an outer diameter of about 16
mm and an inner diameter of about 6 mm. The outer tube 51 and the inner tube 52 are connected to the 3 / 8B provided at the other end.
Are connected to the gas pipe 55 by the hose ends, and form independent gas paths. Therefore, the gas flow rates of the outer tube 51 and the inner tube 52 can be adjusted independently.
Further, the tracer nozzle 5 is provided with a suction pipe side funnel-shaped member 23.
About 49 mm is inserted into the inside of
2 is provided with a main hole 521 at an end thereof, and a plurality of auxiliary holes 512 and 513 are formed on an outer peripheral surface 511 of the outer tube portion 51.
Is open. These supplementary holes 512 and 513 are arranged in four rows 513 on the tip side and four rows 512 on the base side of the tracer nozzle 5.
The area occupied by the four rows of auxiliary holes 513 on the distal side is larger than the area occupied by the four rows of auxiliary holes 512 on the base side. The four auxiliary holes 513 on the tip side have a hole diameter of φ1.5 mm and are arranged four in a circumferential direction in a staggered manner. The auxiliary holes 512 in the four rows on the base side have a diameter of φ1 m.
m, six are arranged in a zigzag pattern in the circumferential direction. The formation pitch of each row is set to 4 mm.

As shown in FIG. 1, the outer pipe portion 51 and the inner pipe portion 52 form different gas flow paths, respectively. It is connected to a gas cylinder 9. The flow rate of the gas is adjusted by the flow rate adjusting valves 81 and 82. Here, in the present embodiment, two flow control valves are used.
Two flow control valves may be shared. The gas used is generally an inert gas such as argon, but air may be used. The height from the top 233 of the suction tube-side funnel 23 to the end on the opening side is about 100 mm.
Therefore, the apex angle is about 48.5 °. Since the suction tube-side funnel-shaped member 23 is formed of a transparent acrylic plate similarly to the main body member 21, the internal state can be observed.

On the other hand, the top 2 of the discharge tube-side funnel 22
23, one end of the discharge tube 6 having an outer diameter of about 16 mm and an inner diameter of about 8 mm is inserted from the end on the discharge tube 6 side of the inner cylinder 3 to be described later into the inside, and a screw plug of a nominal M30 is inserted. O-ring 601 sandwiched between 11 and top 223
By the top 223. The discharge pipe 6 inserted into the inner cylinder 3 because it is held in this manner.
Can be moved out of the inner cylinder 3 by moving the tip thereof, or can be inserted deeper into the inner cylinder 3. The other end is connected to a gas pipe that supplies combustible gas to a gas burner or the like that needs to measure flow velocity or flow distribution.

The top 2 of the discharge tube-side funnel member 22
The height from 23 to the end on the opening side is about 100 mm, and is formed of a transparent acrylic plate like the main body member 21, so that the internal state can be observed. In the present embodiment, the discharge tube 6 is inserted from the end of the inner tube 3 on the discharge tube 6 side until it reaches the inside, and the screw plug 1 is inserted.
1 is held at the top 223 by an O-ring 601 sandwiched between the top 1 and the top 223, but is connected to a straight pipe of a length from the end of the inner cylinder 3 on the discharge pipe 6 side to the inside beforehand. A stopper or the like may be used.

As described above, the discharge tube-side funnel member 22 having the discharge tube 6 connected to the top 223 and the suction tube side funnel member 23 having the tracer nozzle 5 connected to the top 233 are fixed from both sides with the main body member 21 interposed therebetween. As a result, the discharge tube 6 and the tracer nozzle 5 are provided so as to face each other.

Next, the inner cylinder 3 has a plate thickness of about 5
It has a tube shape of about 70 mm in outer diameter and about 60 mm in inner diameter. The locking pin 31 provided on the outer surface side of the inner cylinder 3 is placed and positioned so as to be hooked on the outer cylinder locking member 231 provided in the main body member 21. Incidentally, four locking pins 31 are provided at a position of about 30 mm from the end face 35 on the tracer nozzle side at intervals of 90 °. And the locking pin 31 is about 8 mm from the wall.
It is projected. The main body member 21 is provided with an outer cylinder locking member 231 at a position approximately 40 mm from the tracer nozzle side end surface 24 so that the locking pin 31 can be locked.
mm so as to protrude toward the inner diameter side.

On the other hand, from the end face 36 on the discharge tube side of the inner cylinder 3, about 1
Also at the position of 00 mm, four inclination suppressing pins 32 are provided at 90 ° intervals. The pin 32 is provided to suppress the inclination of the inner cylinder 3. Since the inclination suppressing pin 32 protrudes from the wall surface by about 9 mm, the clearance with the main body member 21 is about 2 mm in diameter.

Next, a method for mounting the coil spring 38, the inner end tube 37 and the mesh 4 inside the inner tube 3 will be described with reference to FIG. As shown in FIG. 4 (a), the inner cylinder 3 has a reduced diameter portion 351 in which the tracer nozzle side end face 35 is reduced to an inner diameter of about 50 mm. Inside the inner cylinder 3, a coil spring 38, an inner and inner cylinder 37,
The mesh 4, the inner tube 37, the mesh 4, and the inner tube 37 are inserted in this order. At this time, the uppermost inner cylinder 37 is slightly protruding from the upper end surface of the inner cylinder 3. In addition, connection fittings 362 are provided on the upper outer surface of the inner cylinder 3 at intervals of 90 °.
It is provided at a location, and can be hooked and pinned to a pin 363 provided on the outer surface of an inner cylinder flange 361 described later. Next, as shown in FIG. 4 (b), the inner cylinder flange 361 is covered and pressed downward.
The connection fitting 362 is hooked on the pin 363. The length of the inner cylinder 37 is about 50 mm and the inner diameter is about 50 mm. The outer diameter of the inner cylinder flange 361 is substantially the same as the outer diameter of the inner cylinder 3, and the inner diameter is formed substantially the same as the inner diameter of the inner-inside cylinder 37. ing. The mesh 4 has a mesh size 23 with a void ratio of 56.0%.
80 μm (JIS Z 8801) is used.

Returning to FIG. 2, the gas flow sent from the main hole 521 provided in the inner tube portion 52 of the tracer nozzle 5 is broken down by the mesh 4 into minute vortices. On the other hand, the tracer particles do not have very good fluidity, so that even the tracer particles that have passed through the mesh 4 may form small aggregates. Agglomerates of the tracer particles carried along with the gas flow collide with each other or collide with the inner wall of the inner and inner cylinders 37 due to the disintegration of the mesh 4, so that the agglomerates collapse and smaller aggregates are formed. It is easy to form a lump, and it is possible to prevent the tracer particles from aggregating on the tube wall. Further, since the gas flow in the inner cylinder 3 is changed from a laminar flow to a turbulent flow, the velocity gradient in the radial direction in the inner cylinder 3 is reduced, and the tracer particles existing in the central portion of the tube are uniform in the cross section. Will be distributed. as a result,
The flow velocity of the tracer particles in the tube is not biased and shading is less likely to occur. The mesh 4 having a smaller mesh size is preferable in that it prevents supply of aggregates of tracer particles. However, if you use too fine, the possibility of clogging increases,
Further, since the pressure loss in the pipe becomes large, it is appropriate to appropriately change the flow rate, the water content, and the like of the tracer powder to be put in the pipe. As described above, since the mesh 4 is held by the pressing force of the coil spring 38, the mesh 4 can be easily held in the inner cylinder 3 even if the thickness of the mesh 4 varies. Further, the inner tube 3 has an inner diameter of about 50 m on the discharge tube side.
An inner cylinder flange 361 of m is provided to hold the inner cylinder 37 pressed by the spring 38 described above. As shown in FIG. 4, the inner cylinder 3 is provided with substantially J-shaped connection fittings 362 provided at four locations at 90 ° intervals.
1 is hooked on a pin 363 provided on the first member. By removing the connection fitting 362, the inner tube 37 and the mesh 4 can be easily attached and detached.

Next, a method of using the present apparatus will be described with reference to FIG. The tracer particle supply device 1 sandwiches the vicinity of an intermediate portion of the main body member 21 with a holder or the like (not shown) with the tracer nozzle 5 side down and the discharge pipe 6 side up.
It is fixed to a support (not shown). And the tracer nozzle 5
The hose ends provided at the other ends of the inner pipe part 52 and the outer pipe part 51 are connected to the gas pipe 55, and further connected to the gas cylinder 9 via the flow control valves 81 and 82. The gas in the gas cylinder 9 may be an inert gas such as nitrogen,
Air may be used to assist combustion of combustible gas such as a gas burner that needs to be measured. The other end of the discharge pipe 6 is connected to a gas pipe for supplying a combustible gas or the like to a gas burner or the like to be measured, or a pipe for supplying combustion air.

Then, the thumb screw 2511 of the 20 ° clamp 251 for fastening the flange 221 provided on the discharge tube side funnel member 22 and the flange 211 provided on the main body member 21 is turned to turn the 20 ° clamp 251. Is opened and removed, and the discharge tube side funnel-shaped member 22 is
Remove from Further, after removing the inner cylinder 3 from the inside, the tracer particles are put into the main body member 21. At this time, if too much tracer particles are added, an aggregate of the tracer particles may be released from the discharge tube 6,
It is good not to put too much. Specifically, it is inserted so as to be not more than about half the height of the main body member 21. Note that the tracer particles used may be tracers close to the specific gravity of the atmosphere to be measured. Here, for example, 2-Al2O
3, with a specific gravity of 3.94 and an average particle size of about 20 μm.

First, the main valve of the gas cylinder 9 is opened, and the flow control valve 8 connected to the inner pipe 52 of the tracer nozzle 5 is opened.
1 is adjusted to a flow rate of about 15 l / min. Thereby, gas is blown into the tracer particle supply device 1 from the main hole 521 provided at the tip of the inner tube portion 52 of the tracer nozzle 5 inserted from the top portion 233 of the suction tube-side funnel 23 through the tracer nozzle 5. Will blow up the tracer particles. Some of the tracer particles immediately after being blown up are partially aggregated to form aggregates. However, by passing through the mesh 4 provided in the inner cylinder 3, the aggregates collide with each other, or Agglomerates are crushed finely by hitting the inner wall of the cylinder 3 or the like, and the degree of aggregation is reduced. The gas supplied from the inner pipe 52 blows up tracer particles near the top 233 of the suction pipe-side funnel 23. At this time,
Depending on the type of the tracer particles, a path through which the gas passes inside the deposited tracer particles is created. Then, the upper part of the deposited tracer particles sometimes collapses and falls as a lump, and is easily blown up again and discharged from the discharge pipe 6 to the outside. Therefore, by adjusting the flow rate adjusting valve 82 connected to the outer pipe part 51 of the tracer nozzle 5 to a flow rate of about 15 liter / min, the tracer inserted from the top 233 of the suction pipe-side funnel 23 through the tracer nozzle 5. Outer peripheral surface 5 of nozzle 5
Gas is blown into the tracer particle supply device 1 from the auxiliary holes 512 and 513 provided in the 11. The gas from the outer surface breaks the gas passage formed by the gas from the inner tube portion 52. Then, by preventing the accumulation of the tracer particles, it is possible to prevent the pulsation of the gas due to the upper portion of the accumulated tracer particles falling in a lump.

A part of the tracer particles passing through the mesh 4 are discharged to the outside through the discharge pipe 6 together with the gas blown from the tracer nozzle 5, and supplied into the flow field. Further, the tracer particles that have not been discharged from the discharge pipe 6 to the outside pass between the inner cylinder 3 and the discharge pipe 6, and further flow downwardly by hitting the inclined surface of the discharge pipe-side funnel-shaped member 22, and become downward. It falls near the tube wall of the main body member 21 through a gap provided between the main body member 21 and the inner cylinder 3. Therefore, tracer particles are deposited between the main body member 21 and the inner cylinder 3 near the tracer nozzle 5.

On the other hand, due to the gas flow sent through the tracer nozzle 5, near the pipe wall of the main body member 21,
A flow in the opposite direction to this gas flow occurs. Since a gap is provided between the suction tube-side funnel 23 and the inner cylinder 3 on the tracer nozzle 5 side, the gas is pushed away by the flow in the opposite direction to the gas flow, and the suction tube-side funnel 23 is Since the inner surface is formed in a funnel shape, the deposited tracer particles collect again near the tracer nozzle 5. As described above, the direction of the gas flow flowing through the deposited tracer particles is always a constant direction, and the tracer particles follow the gas flow sucked from the tracer nozzle 5 in the vicinity of the center in the hollow outer cylinder 2. By ascending and descending near the tube wall, i.e. circulating, the deposited tracer particles will be agitated throughout. Since the deposited state of the tracer particles is substantially uniform as a whole, the gas flowing out of the discharge pipe 6 does not have a temporal density. That is, the tracer particles flowing out together with the gas do not have temporal shading. Further, even if the amount of the residual tracer particles in the hollow outer cylinder 2 decreases, the amount of the tracer particles blown up together with the gas is constant.
The concentration of the tracer particles is not reduced.
For this reason, without causing a change in the concentration of the tracer particles,
It is possible to uniformly and constantly supply the tracer particles into the flow field.

Since the apex angle of the suction pipe-side funnel 23 is set to about 48.5 °, the gas fed from the tracer nozzle 5 is attached to the inclined surface of the funnel 23 by the side wall adhesion phenomenon. Without spreading along
The separation point on the inclined surface of the gas flow sent from the tracer nozzle 5 is on the inner diameter side of the inner cylinder 3. Therefore,
The tracer particles rise along with the gas flow rising inside the inner cylinder 3, a part of the tracer particles is discharged to the outside from the discharge pipe 6, and the remainder becomes a gas flow descending near the pipe wall of the main body member 21. The circulating flow in the hollow outer cylinder 2 is performed smoothly. That is, it is possible to uniformly and constantly supply the tracer particles into the flow field without causing a change in the concentration of the tracer particles.

[Brief description of the drawings]

FIG. 1 is a diagram showing a connection state of a tracer supply device of the present invention.

FIG. 2 is a cross-sectional view of the tracer supply device of the present invention.

FIG. 3 is a detailed view showing a clamp which is a main part of the present invention.

FIG. 4 is an explanatory view showing an inner cylinder which is a main part of the present invention.

FIG. 5 is a diagram showing a method of using the tracer supply device of the present invention.

FIG. 6 is a diagram showing a conventional tracer supply device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tracer supply apparatus 2 Hollow outer cylinder 3 Inner cylinder 4 Mesh (turbulence generation lattice member) 5 Tracer nozzle 6 Release tube 21 Main body member 22 Release tube side funnel member 23 Suction pipe side funnel member 31 Lock pin (Inner cylinder) Locking member) 32 Inclination suppressing pin (Inclination preventing projecting member) 37 Inner-inside tube 38 Coil spring (Pressing member) 51 Outer tube portion 52 Inner tube portion 211, 212, 221, 232 Flange 231 Outer tube locking member 251, 252 Clamp 351 Reduced diameter portion (bulging member) 361 Inner cylinder flange (lid member) 362 Connection fitting 363 Pin 511 Outer peripheral surface 512 Base side supplementary hole 513 Tip side supplementary hole 521 Main hole

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoshito Umeda 507-2 Shinhocho, Tokai-shi, Aichi F-term in Toho Gas Co., Ltd. (reference) 2F034 AA02 AB01 DA07 DB07

Claims (7)

[Claims] 1. A tracer particle supply device for discharging gas together with tracer particles stored inside a hollow outer cylinder forming a gas flow path in an axial direction, wherein the hollow outer cylinder has a hollow shape having a flange at at least one end. The main body member, a funnel-shaped member having a flange disposed at the wide-mouth side end of the funnel facing the flange, and a clamp that clamps the flange of the main body member and the flange of the funnel-shaped member from both sides. A tracer particle supply device, comprising: 2. The tracer particle supply device according to claim 1, wherein the outer diameter side of at least one of the flange of the main body member and the flange of the funnel-shaped member is formed thinner than the inner diameter side. 3. The tracer particle supply device according to claim 1, wherein the clamp clamps the flange of the main body member and the flange of the funnel-shaped member all around. 4. A tracer particle supply device for forming a gas flow path in an axial direction and discharging gas together with tracer particles stored inside a hollow outer cylinder having an inner cylinder held therein, A tracer particle supply device having an inner cylinder locking member, which is positioned and abutted on an outer cylinder locking member provided on an inner wall surface of the hollow outer cylinder, on an outer side surface. 5. The tracer particle supply device according to claim 4, wherein the inner cylinder has a tilt preventing projection member at a position separated from the inner cylinder locking member. 6. A tracer particle supply device for releasing a gas together with tracer particles stored inside a hollow outer cylinder having an inner cylinder held therein, wherein said inner cylinder has at least two positions at positions separated from each other. A swelling member that swells toward the inner diameter side, an expandable and contractible pressing member disposed between the two swelling members, and a turbulence generating grid member positioned between the swelling members by the pressing member. A tracer particle supply device, comprising: 7. The swelling member of at least one of the inner cylinders is a removable lid member.
2. The tracer particle supply device according to 1.