JP2003075229A - Immersion-type water level gage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an immersion-type water level gage in which dust, scum or the like can be removed easily by pulling up and immersing a detector part in a short time, even when the dust, the scum or the like is stuck to the detector and a cable while being submerged into a sewage pump well. SOLUTION: In the immersion-type water level gage, the detector in which a wave preventive pipe is installed as a guide in sewage and a converter which is installed in air are connected by the cable contained in a hollow pipe. A hollow cylindrical plumb hob whose outside diameter is smaller than the inside diameter of the wave preventive pipe and which comes into internal contact with the wave preventive pipe is arranged in such a way that the cable contained in the hollow pipe is passed, the plumb hob can be moved smoothly and stably along the inner wall of the wave preventive pipe, and the dust, the scum or the like which is stuck and bonded to the inner wall of the wave preventive pipe can be removed and broken easily. Consequently, the reliability of a detection circuit is ensured, and a periodical inspection operation can be executed simply.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouring type water level gauge, and more particularly to a pouring type water level gauge for sewage which measures the water level of a sewer or a sewage treatment plant.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional sewage pouring type water level gauge for measuring the water level of a sewer or a sewage treatment plant has a breakwater pipe 2 at the bottom of a sewage pump well that reaches the water surface 1. The water level signal detected by the detector 3 of the throw-in type water level meter installed as a guide is transmitted to the converter 5 installed in the air through the cable 4 containing the hollow pipe, which is an important electric facility. It is used for operation control of a pump (not shown), and the detection signal is required to have high reliability for a long period of time.

On the other hand, sewage water contains solid and fibrous dust as well as dissolved substances, and is easily attached and adhered to submerged parts such as the detector 3, the cable 4 and the breakwater tube 2. It is regularly cleaned and inspected. In particular, scum tends to accumulate in layers near the water surface 1 on the inner wall of the breakwater 2, and the detector 3 and the cable 4 may become dust-like when the detector 3 is pulled up using the chain and re-dropped. It becomes easy to be restricted or damaged by the adhered / adhered part of. Therefore, an unplanned incidental work such as pressurization and water discharge toward the inner wall of the breakwater pipe 2 is likely to occur.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to cope with the above situation. The problem is that even if dust, scum, etc. adhere to the detector or cable during submersion in the sewage pump well, The load acting on the detector and cable is reduced, damage to the detection circuit is reduced and reliability is ensured, and the detector part can be lifted and dropped in a short time, and periodic inspection work can be performed easily. It is to provide an immersion type water level gauge that can.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 comprises a detector installed in a dirty water as a guide using a wave breaker, and a converter installed in the air. A throw-in type water level gauge consisting of a cable containing a hollow pipe connecting the detector and the converter, comprising a hollow cylindrical weight having an outer diameter inscribed by a diameter smaller than the inner diameter of the breakwater tube, A throw-in type water level meter, characterized in that the hollow pipe-shaped cable is arranged so as to penetrate through a cylindrical weight.

According to the first aspect of the invention, the outer diameter, hollow, and height of the cylindrical weight are selected in consideration of the inside diameter of the wave breaker tube, the outer diameter of the detection cable, and so on. Since it can move smoothly and stably along the inner wall of the breakwater without carelessly touching it, dust and scum that adheres to and adheres to the inner wall of the breakwater due to the dead weight of the weight can be removed or damaged. As a result, it is possible to easily secure a space for lifting and dropping the detector in the inner wall of the breakwater, and it is possible to easily carry out regular inspection work and the like. In addition, as manual work for lifting and lowering the weight using a chain, carefully consider the adhesion of dust, the height to drop the weight to the close contact position, the detector cable, the arrangement of the breakwater tube, etc. If you choose
By using the falling speed and impact of the weight, it is possible to remove dust and scum, and adjust the damage action.

According to a second aspect of the present invention, in the pouring type water level gauge according to the first aspect, the weight can be divided by a dividing surface passing through the hollow upper and lower ends of the weight. According to the invention of claim 2, since it is divided by the wavefront passing through the hollow portion of the cylindrical weight, it can be easily combined with the detector cable each time dust, scum, etc. are attached or adhered. Since it is not necessary to store a relatively large size and mass of weight in a restricted place such as near a breakwater tube, it is easy to maintain the work environment on site and it can be shared with other equipment with the same inside diameter of the breakwater tube. Equipment costs and maintenance management quantity can also be reduced. Furthermore, if the open shape of the hollow part is made into a cylindrical partial cutout structure with a minimum size according to the detector cable,
It is possible to omit the bolt tightening and removing work for dividing and uniting, and it is possible to shorten the work time.

According to a third aspect of the present invention, in the pouring type water level gauge according to the first or second aspect, the inner diameters of the lower end and the upper end of the hollow portion of the weight are made wider than the inner diameter of the central portion and have a tapered cross section. It is characterized by

According to the third aspect of the present invention, the inner diameters of the lower end and the upper end of the hollow portion of the cylindrical weight are made wider than the inner diameter of the center in the height direction, so that the cylinder has a tapered wedge-shaped cross section. Therefore, when the weight cylinder is suspended at the lower end and when the weight cylinder is suspended at the upper end, a large load is applied to the surface of the inner wall of the wave protection tube, such as dust, scum, etc. it can. In addition, since the hollow portion of the weight and the center of the height are narrowed, dust, scum, and the like that are detached or damaged are subject to a compression action, and are easily broken into small pieces.

According to a fourth aspect of the present invention, in the pouring type water level gauge according to the first or second aspect, the lower end and the upper end of the weight have a concavo-convex continuous outer shape. According to the invention of claim 4, since the lower end and the upper end of the cylindrical weight have a shape in which unevenness, a triangular shape, or a trapezoidal shape is continuously formed, dust, scum, and the like attached from the inner wall of the wave protection tube A large load is partially applied to the surface, allowing easy removal and damage. Further, a tensile load is applied to dust, scum, etc. corresponding to the dimensional difference between the peaks and valleys of the unevenness, and the fine fracture is likely to occur.

According to a fifth aspect of the present invention, in the pouring water level gauge according to the first or second aspect, a flat plate or a mesh division piece is formed by dividing a circular donut shape into a lower end surface and an upper end surface of the weight. Is arranged, and one end on the outer peripheral side of this divided piece is attached to a hinge structure.

According to the fifth aspect of the present invention, the wave is prevented by a flat plate or a mesh-shaped circular donut-shaped divided piece attached to the lower end surface and the upper end surface of the cylindrical weight with one end on the outer peripheral side having a hinge structure. It catches dust, scum, etc. that breaks away from the inner wall of the pipe, and pushes it toward the bottom of the wave protection pipe when the weight is suspended at the lower end, and scrapes it out to the top of the wave protection pipe when the weight is suspended at the upper end. It is possible to remove contaminants in the wastewater in the breakwater tube, reduce adhesion and adhesion to the inner wall, or extend the cycle of the generation period. Further, because of the hinge structure, dust and scum are not captured when the weight is hoisted at the lower end and when the weight is hoisted at the upper end, so that the scraped-out material removal process can be particularly simplified.

According to a sixth aspect of the present invention, in the pouring type water level gauge according to the first or second aspect, pores communicating with the lower surface, the outer diameter and the inner diameter direction are provided inside the mass of the weight.
A pressurized water supplier for supplying pressurized water from the air is connected to one end of the pore so that the pressurized water can be jetted from the pore.

According to the sixth aspect of the present invention, the inside of the cylindrical mass of weight is perforated with pores communicating with the lower surface, the outer diameter and the inner diameter, and is connected to one end of these holes, mainly to the upper end side. Since pressurized water can be supplied from the air on the upper end of the breakwater pipe through the pressurized water supply device, the wall surface is cleaned by jetting it to the inner wall of the breakwater pipe, and the dispersion, discharge and installation of a detector near the bottom of the breakwater pipe are installed. Position maintenance becomes easy. Also, if the weights are suspended and hoisted regularly, it is possible to maintain the environment around the detectors and cables and the inner wall of the breakwater tube, so the detectors and cables can be lifted and the throwing cycle extended. Also, cable damage and insulation failure are reduced, enabling stable measurement over a long period of time.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a throw-in type water level gauge according to a first embodiment (corresponding to claim 1) of the present invention, and the same parts as those of the conventional example described above are designated by the same reference numerals.

As shown in the figure, in the throw-in type water level meter of this embodiment, the detector 3 installed with the wave breaker tube 2 as a guide below the sewage water surface 1 and the converter 5 installed in the air. , And is connected via a cable 4 containing a hollow pipe. In addition, an outer diameter 61 which is smaller than the inner diameter of the breakwater tube 2 and inscribes
The hollow cylindrical weight 6 having the above is arranged so that the cable 4 penetrates inside the hollow inner diameter 62 thereof. The outer diameter 61, the hollow inner diameter 62, and the height dimension of the cylindrical weight 6 are the same as those of the breakwater tube 2.
And the outer diameter of the detector cable 4 are taken into consideration. 63, 64 and 65 are cylindrical weights 6 respectively
The upper and lower ends and the central part of the
Is attached.

Since the present embodiment is configured as described above, the cylindrical weight 6 does not come into contact with the detector cable 4 carelessly, and also smoothly along the inner wall of the breakwater tube 2. Moreover, since it moves stably, dust, scum, etc. adhering to and adhering to the inner wall of the wave preventing tube 2 are detached and damaged by the weight 6 or the like. Therefore, it is possible to easily secure a space for lifting and throwing the detector 3 and the cable 4 in the inner wall of the breakwater 2, so that it is possible to quickly and easily carry out regular inspection work.

FIG. 2 is a block diagram of a pouring type water level gauge according to a second embodiment (corresponding to claim 2) of the present invention. The same parts as those in the first embodiment of FIG. 1 are designated by the same reference numerals. explain. As shown in the figure, in the throw-in type water level meter of this embodiment, the detector 3 installed with the wave breaker tube 2 as a guide below the sewage water surface 1 and the converter 5 installed in the air are hollow pipes. Incoming cable 4
It is configured to be connected via. A hollow cylindrical weight 6 having an outer diameter 61 smaller than the inner diameter of the breakwater tube 2 and inscribed therein is arranged so that the cable 4 penetrates into the hollow inner diameter 62. And this cylindrical weight 6
Is divided by a dividing surface 66 which passes through the upper and lower ends of the hollow inner diameter 62, and the bolts 67 are used to tighten and combine the dividing surfaces. Therefore, the weight 6 is divided by the dividing surface 66 by the bolts 67 to open the hollow inner diameter 62, or the weight 6 is divided.
Both tightening and joining can be easily performed.

Since the present embodiment is configured as described above, the weight 6 may be prepared for periodic inspections, etc. Therefore, the weight 6 having a relatively large size and mass is provided in the vicinity of the breakwater tube 2. It is no longer necessary to store it in a restricted place, making it easier to maintain a work environment on site. Further, since it can be shared with other equipment having the same inner wall of the breakwater tube 2, equipment cost and maintenance management quantity can be reduced. Furthermore, the open shape of the hollow inner diameter 62
If the weight is set to the minimum size according to the detector cable 4 and the inner diameter 62 is set along the cable 4, and the weight 6 has a partial notch structure, bolting and removing work for dividing and uniting can be omitted. The working time can be greatly reduced.

FIG. 3 is a block diagram of a pouring type water level gauge according to a third embodiment (corresponding to claim 3) of the present invention. The same parts as those in the first embodiment of FIG. 1 are designated by the same reference numerals. A duplicate description will be omitted. As shown in the figure, in the throw-in type water level meter of this embodiment, the detector 3 installed with the wave breaker tube 2 as a guide below the sewage water surface 1 and the converter 5 installed in the air are hollow pipes. It is configured to be connected via the incoming cable 4. Also,
A hollow cylindrical weight 6 having an outer diameter 61 smaller than the inner diameter of the breakwater tube 2 and inscribed therein has a hollow inner diameter 62 in which the cable 4 is attached.
Are arranged so as to penetrate. The cylindrical weight 6 has a hollow inner diameter 62 having a lower end 64 and an upper end 63.
The inner diameter of is larger than the inner diameter of the central portion 65 to form a tapered cross section. That is, since the thickness cross-sectional shape of the weight 6 has a tapered wedge shape and has an acute-angled end surface,
A large load is applied to the surface of dust, scum, etc. adhered / adhered to the inner wall of the breakwater tube 2 when the lower end 64 is lifted down and the upper end 63 is lifted up. Furthermore, since the center 65 of the hollow inner diameter 62 of the weight 6 is narrower,
It gives strong compression / deformation to detached / damaged dust / scum.

Since this embodiment is constructed as described above, the sharp upper and lower ends 63, 64 apply an external force so as to pierce the adhered / adhered dust, scum, etc., and facilitate the detachment / damage. You can Also, the reduced weight 6
Debris, scum, etc., which has been detached and damaged, is pushed into the central portion 65 of the hollow inner diameter 62 of the
It gives a deforming action and contributes to further fine fracture.

FIG. 4 is a block diagram of a pouring type water level gauge according to a fourth embodiment (corresponding to claim 4) of the present invention. The same parts as those in the first embodiment of FIG. 1 are designated by the same reference numerals. explain. As shown in the figure, in the throw-in type water level meter of this embodiment, the detector 3 installed with the wave breaker tube 2 as a guide below the sewage water surface 1 and the converter 5 installed in the air are hollow pipes. Incoming cable 4
It is configured to be connected via. A hollow cylindrical weight 6 having an outer diameter 61 smaller than the inner diameter of the breakwater tube 2 and inscribed therein is arranged so that the cable 4 penetrates the hollow inner diameter 62. Then, the lower end 64 and the upper end 63 of the weight 6 are formed as a projection 68 and a recess 69, respectively, so that the pointed outer shape such as a triangle or a trapezoid is continuous. Further, three projections 68 are provided at the upper and lower ends at a pitch of 120 °, the circumference of the projection 68 is narrower than that of the recess 69, and the projections 68 at the upper and lower ends are provided.
They are offset by 60 degrees. And the lower end 64 of the weight 6
And the pointed shape of the protrusion 68 provided on the upper end 63 is
Apply a large load so that it partially sticks to the surface of dust, scum, etc. that adheres to and adheres to the inner wall of the. Also convex 68
Also, a tensile load is applied to dust, scum, etc. corresponding to the dimensional difference between the peaks and valleys of the recess 69.

Since this embodiment is constructed as described above, the pointed projection 68 gives an external force so as to pierce the adhered / adhered dust, scum, etc., so that the detachment and damage can be facilitated. . In addition, a tension / deformation action is given corresponding to the dimensional difference between the peaks and valleys of the projection 68 and the recess 69,
Contributes to fine breakage.

FIG. 5 is a constitutional view of a pouring type water level gauge according to a fifth embodiment (corresponding to claim 5) of the present invention. The same parts as those in the first embodiment of FIG. 1 are designated by the same reference numerals. explain. As shown in the figure, in the throw-in type water level meter of this embodiment, the detector 3 installed with the wave breaker tube 2 as a guide below the sewage water surface 1 and the converter 5 installed in the air are hollow pipes. Incoming cable 4
It is configured to be connected via. A hollow cylindrical weight 6 having an outer diameter 61 smaller than the inner diameter of the breakwater tube 2 and inscribed therein is arranged so that the cable 4 penetrates the hollow inner diameter 62. Further, a plate or a mesh of a divided piece 10 formed by dividing a circular donut shape is attached to the lower end 64 or the upper end 63 of the weight 6 by the hinge structure 11 at one end on the outer peripheral side thereof. In the figure, a flat plate or mesh that is slightly divided into two parts and the hinge positions at the upper and lower ends are displaced by 90 degrees in consideration of the space for mounting the chain 7.

According to the present embodiment, the flat doughnut-shaped split piece 10 attached to the lower end 64 or the upper end 63 of the weight 6 via the hinge structure 11 is separated from the inner wall of the wave breaker tube 2. Captures broken trash, scum, etc.,
The lower end side pushes the weight cylinder 6 toward the bottom of the breakwater tube when the weight cylinder 6 is suspended, and the upper end side scrapes it out to the top end of the breakwater tube when the weight 6 is lifted. A large force is applied to the divided piece 10 during such pushing and scraping, but the outer peripheral portion of the divided piece 10 is supported by the upper end 63 or the lower end 64 of the weight 6, and it is easy to secure the strength. Further, due to the hinge structure, the divided piece 10 at the lower end 64 is added to the divided piece when the weight 6 is hoisted, and the divided piece 10 at the upper end 63 is not caught when the weight cylinder 6 is hoisted. The force is reduced.

Since the present embodiment is constructed as described above, the contaminants in the dirty water between the inner wall of the breakwater tube 2 and the cable 4 are removed from the breakwater tube 2 by pushing and scraping it.
It can be extracted, and the probability of adhesion and adhesion to the inner wall can be reduced or the cycle of the generation period can be extended.

FIG. 6 is a block diagram of a pouring type water level gauge according to a sixth embodiment (corresponding to claim 6) of the present invention. The same parts as those in the first embodiment of FIG. 1 are designated by the same reference numerals. explain. As shown in the figure, in the throw-in type water level meter of this embodiment, the detector 3 installed with the wave breaker tube 2 as a guide below the sewage water surface 1 and the converter 5 installed in the air are hollow pipes. Incoming cable 4
It is configured to be connected via. Further, the weight 6A of a hollow cylindrical block having an outer diameter 61 smaller than the inner diameter of the breakwater tube 2 and inscribed therein is arranged so that the cable 4 passes through the hollow inner diameter 62 thereof. Inside the weight 6A, the lower surface 8
2, the pores 8 communicating with the outer diameter 81 and the inner diameter 83 are provided in a dispersed manner, and one end of the pores 8, for example, the upper end 84 is connected to a pressurized water supplier 9 supplied from the air, for example, a hose.
It is configured to eject the pressurized water from the pores 8. Pressurized water through a hose 9 connected to an upper end side 63 of the weight 6A from a lower surface 82, an outer diameter 81 and a pore 8 in the direction of the inner diameter 83, which are perforated to communicate with the inside of the weight 6A. Two
It is supplied from the air on the upper end side of, and jetted out.

Since the present embodiment is configured as described above, the wall surface is cleaned by jetting it onto the inner wall of the breakwater tube 2, the deposits near the bottom of the breakwater tube 2 are dispersed, discharged and the detector installation position is set. Can be easily maintained, measurement conditions around the detector can be secured, and measurement reliability can be maintained. In addition, the weight of the cylindrical mass 6A
If you regularly suspend and lift the
Also, the environment around the cable 4 and the inner wall of the wave breaker 2 can be maintained, the detector and cable can be lifted, the throwing cycle can be extended, and damage to the cable and insulation failure can be reduced, ensuring stable measurement over a long period of time. Is done.

[0029]

As described above, according to the present invention,
A structure based on a cylinder that is inscribed in the inner wall of the breakwater tube Basically, by suspending and dropping a simple weight, dust that adheres to, adheres to, or accumulates on the inner wall of the breakwater tube, the bottom part, and the detector cable, etc.
The scum or the like can be easily detached, damaged, dissipated, or scraped out without damaging the inner wall of the breakwater tube, the detector cable, or the like. Therefore, it is possible to ensure the reliability of the water level gauge circuit for a long period of time, and it is possible to make the regular inspection work quick and simple and to expect an extension of the inspection cycle.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a throw-in type water level gauge that is a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a throw-in type water level gauge which is a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a throw-in type water level gauge which is a third embodiment of the present invention.

FIG. 4 is a configuration diagram of a throw-in type water level gauge according to a fourth embodiment of the present invention.

FIG. 5 is a configuration diagram of a throw-in type water level gauge that is a fifth embodiment of the present invention.

FIG. 6 is a configuration diagram of a throw-in type water level gauge that is a sixth embodiment of the present invention.

FIG. 7 is a configuration diagram of a conventional throw-in type water level gauge.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Sewage surface, 2 ... Wave tube, 3 ... Detector, 4 ... Hollow pipe cable, 5 ... Converter, 6,6A ... Weight, 7 ... Chain, 8 ... Pore, 9 ... Pressurized water supply device, 10 … Divided pieces, 11
... hinge structure, 61 ... outer diameter part, 62 ... inner diameter part, 63 ... upper end, 64 ... lower end, 65 ... central part, 66 ... dividing surface, 67 ...
Dividing surface tightening bolts, 68 ... convex portion, 69 ... concave portion, 81
... outer diameter, 82 ... lower surface, 83 ... inner diameter, 84 ... upper end.

Claims (6)

[Claims] 1. A throw-in comprising a detector installed in a dirty water as a guide by a wave breaker, a converter installed in the air, and a cable with a hollow pipe connecting the detector and the converter. In the water level gauge, a hollow cylindrical weight having an outer diameter that is smaller than the inner diameter of the breakwater tube and inscribed therein is provided, and the hollow pipe weight is arranged so that the cable with the hollow pipe penetrates through the weight. Immersion type water level meter. 2. The throw-in type water level gauge according to claim 1,
An immersion water level meter characterized by being capable of being divided by a dividing surface that passes through the hollow upper and lower ends of the weight. 3. The throw-in type water level gauge according to claim 1 or 2, wherein the inner diameters of the lower end and the upper end of the hollow portion of the weight are
An immersion water level gauge characterized by having a tapered cross section that is wider than the inner diameter of the central part. 4. The pouring type water level gauge according to claim 1, wherein the lower end and the upper end of the weight have a continuous contoured shape. 5. The throw-in water level gauge according to claim 1 or 2, wherein a flat plate or a mesh division piece formed by dividing a circular donut shape is arranged on the lower end surface and the upper end surface of the weight, and the division is performed. An immersion water level gauge characterized in that one end on the outer peripheral side of the piece is attached to a hinge structure. 6. The pouring type water level gauge according to claim 1 or 2, wherein pores communicating with the lower surface, the outer diameter, and the inner diameter direction are provided inside the mass of the weight, and one end of the pores is provided. A pouring type water level meter, characterized in that a pressurized water supply device for supplying pressurized water from the air is connected to the above so that the pressurized water can be ejected from the pores.